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src/hotspot/share/prims/jvm.cpp

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   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"

  26 #include "cds/cdsConfig.hpp"
  27 #include "cds/classListParser.hpp"
  28 #include "cds/classListWriter.hpp"
  29 #include "cds/dynamicArchive.hpp"
  30 #include "cds/heapShared.hpp"
  31 #include "cds/lambdaFormInvokers.hpp"
  32 #include "classfile/classFileStream.hpp"
  33 #include "classfile/classLoader.inline.hpp"
  34 #include "classfile/classLoaderData.hpp"
  35 #include "classfile/classLoaderData.inline.hpp"
  36 #include "classfile/classLoadInfo.hpp"
  37 #include "classfile/javaAssertions.hpp"
  38 #include "classfile/javaClasses.inline.hpp"
  39 #include "classfile/moduleEntry.hpp"
  40 #include "classfile/modules.hpp"
  41 #include "classfile/packageEntry.hpp"
  42 #include "classfile/stringTable.hpp"
  43 #include "classfile/symbolTable.hpp"
  44 #include "classfile/systemDictionary.hpp"
  45 #include "classfile/vmClasses.hpp"

  68 #include "prims/jvm_misc.hpp"
  69 #include "prims/jvmtiExport.hpp"
  70 #include "prims/jvmtiThreadState.inline.hpp"
  71 #include "prims/stackwalk.hpp"
  72 #include "runtime/arguments.hpp"
  73 #include "runtime/atomic.hpp"
  74 #include "runtime/continuation.hpp"
  75 #include "runtime/globals_extension.hpp"
  76 #include "runtime/handles.inline.hpp"
  77 #include "runtime/init.hpp"
  78 #include "runtime/interfaceSupport.inline.hpp"
  79 #include "runtime/deoptimization.hpp"
  80 #include "runtime/handshake.hpp"
  81 #include "runtime/java.hpp"
  82 #include "runtime/javaCalls.hpp"
  83 #include "runtime/javaThread.hpp"
  84 #include "runtime/jfieldIDWorkaround.hpp"
  85 #include "runtime/jniHandles.inline.hpp"
  86 #include "runtime/os.inline.hpp"
  87 #include "runtime/osThread.hpp"
  88 #include "runtime/perfData.hpp"
  89 #include "runtime/reflection.hpp"
  90 #include "runtime/synchronizer.hpp"
  91 #include "runtime/threadIdentifier.hpp"
  92 #include "runtime/threadSMR.hpp"
  93 #include "runtime/vframe.inline.hpp"
  94 #include "runtime/vmOperations.hpp"
  95 #include "runtime/vm_version.hpp"
  96 #include "services/attachListener.hpp"
  97 #include "services/management.hpp"
  98 #include "services/threadService.hpp"
  99 #include "utilities/checkedCast.hpp"
 100 #include "utilities/copy.hpp"
 101 #include "utilities/defaultStream.hpp"
 102 #include "utilities/dtrace.hpp"
 103 #include "utilities/events.hpp"
 104 #include "utilities/macros.hpp"
 105 #include "utilities/utf8.hpp"
 106 #include "utilities/zipLibrary.hpp"
 107 #if INCLUDE_CDS
 108 #include "classfile/systemDictionaryShared.hpp"

 226       if (source_file != nullptr) {
 227         log_debug(class, resolve)("%s %s %s:%d (%s)", from, to, source_file, line_number, trace);
 228       } else {
 229         log_debug(class, resolve)("%s %s (%s)", from, to, trace);
 230       }
 231     }
 232   }
 233 }
 234 
 235 void trace_class_resolution(Klass* to_class) {
 236   EXCEPTION_MARK;
 237   trace_class_resolution_impl(to_class, THREAD);
 238   if (HAS_PENDING_EXCEPTION) {
 239     CLEAR_PENDING_EXCEPTION;
 240   }
 241 }
 242 
 243 // java.lang.System //////////////////////////////////////////////////////////////////////
 244 
 245 
 246 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored))
 247   return os::javaTimeMillis();
 248 JVM_END
 249 
 250 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored))
 251   return os::javaTimeNanos();
 252 JVM_END
 253 
 254 // The function below is actually exposed by jdk.internal.misc.VM and not
 255 // java.lang.System, but we choose to keep it here so that it stays next
 256 // to JVM_CurrentTimeMillis and JVM_NanoTime
 257 
 258 const jlong MAX_DIFF_SECS = CONST64(0x0100000000); //  2^32
 259 const jlong MIN_DIFF_SECS = -MAX_DIFF_SECS; // -2^32
 260 
 261 JVM_LEAF(jlong, JVM_GetNanoTimeAdjustment(JNIEnv *env, jclass ignored, jlong offset_secs))
 262   jlong seconds;
 263   jlong nanos;
 264 
 265   os::javaTimeSystemUTC(seconds, nanos);
 266 
 267   // We're going to verify that the result can fit in a long.
 268   // For that we need the difference in seconds between 'seconds'
 269   // and 'offset_secs' to be such that:
 270   //     |seconds - offset_secs| < (2^63/10^9)
 271   // We're going to approximate 10^9 ~< 2^30 (1000^3 ~< 1024^3)
 272   // which makes |seconds - offset_secs| < 2^33
 273   // and we will prefer +/- 2^32 as the maximum acceptable diff
 274   // as 2^32 has a more natural feel than 2^33...
 275   //
 276   // So if |seconds - offset_secs| >= 2^32 - we return a special
 277   // sentinel value (-1) which the caller should take as an
 278   // exception value indicating that the offset given to us is
 279   // too far from range of the current time - leading to too big
 280   // a nano adjustment. The caller is expected to recover by
 281   // computing a more accurate offset and calling this method
 282   // again. (For the record 2^32 secs is ~136 years, so that
 283   // should rarely happen)
 284   //
 285   jlong diff = seconds - offset_secs;
 286   if (diff >= MAX_DIFF_SECS || diff <= MIN_DIFF_SECS) {
 287      return -1; // sentinel value: the offset is too far off the target
 288   }
 289 
 290   // return the adjustment. If you compute a time by adding
 291   // this number of nanoseconds along with the number of seconds
 292   // in the offset you should get the current UTC time.
 293   return (diff * (jlong)1000000000) + nanos;
 294 JVM_END
 295 
 296 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos,
 297                                jobject dst, jint dst_pos, jint length))
 298   // Check if we have null pointers
 299   if (src == nullptr || dst == nullptr) {
 300     THROW(vmSymbols::java_lang_NullPointerException());
 301   }
 302   arrayOop s = arrayOop(JNIHandles::resolve_non_null(src));
 303   arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst));
 304   assert(oopDesc::is_oop(s), "JVM_ArrayCopy: src not an oop");
 305   assert(oopDesc::is_oop(d), "JVM_ArrayCopy: dst not an oop");
 306   // Do copy
 307   s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread);
 308 JVM_END
 309 
 310 
 311 static void set_property(Handle props, const char* key, const char* value, TRAPS) {
 312   JavaValue r(T_OBJECT);
 313   // public synchronized Object put(Object key, Object value);
 314   HandleMark hm(THREAD);
 315   Handle key_str    = java_lang_String::create_from_platform_dependent_str(key, CHECK);
 316   Handle value_str  = java_lang_String::create_from_platform_dependent_str((value != nullptr ? value : ""), CHECK);
 317   JavaCalls::call_virtual(&r,
 318                           props,
 319                           vmClasses::Properties_klass(),
 320                           vmSymbols::put_name(),
 321                           vmSymbols::object_object_object_signature(),
 322                           key_str,
 323                           value_str,
 324                           THREAD);
 325 }
 326 
 327 
 328 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties));
 329 
 330 /*
 331  * Return all of the system properties in a Java String array with alternating
 332  * names and values from the jvm SystemProperty.
 333  * Which includes some internal and all commandline -D defined properties.
 334  */
 335 JVM_ENTRY(jobjectArray, JVM_GetProperties(JNIEnv *env))
 336   ResourceMark rm(THREAD);
 337   HandleMark hm(THREAD);
 338   int ndx = 0;
 339   int fixedCount = 2;
 340 
 341   SystemProperty* p = Arguments::system_properties();
 342   int count = Arguments::PropertyList_count(p);
 343 
 344   // Allocate result String array
 345   InstanceKlass* ik = vmClasses::String_klass();
 346   objArrayOop r = oopFactory::new_objArray(ik, (count + fixedCount) * 2, CHECK_NULL);
 347   objArrayHandle result_h(THREAD, r);
 348 
 349   while (p != nullptr) {
 350     const char * key = p->key();
 351     if (strcmp(key, "sun.nio.MaxDirectMemorySize") != 0) {
 352         const char * value = p->value();
 353         Handle key_str    = java_lang_String::create_from_platform_dependent_str(key, CHECK_NULL);
 354         Handle value_str  = java_lang_String::create_from_platform_dependent_str((value != nullptr ? value : ""), CHECK_NULL);
 355         result_h->obj_at_put(ndx * 2,  key_str());

 403       Handle key_str = java_lang_String::create_from_platform_dependent_str("sun.management.compiler", CHECK_NULL);
 404       Handle value_str  = java_lang_String::create_from_platform_dependent_str(compiler_name, CHECK_NULL);
 405       result_h->obj_at_put(ndx * 2,  key_str());
 406       result_h->obj_at_put(ndx * 2 + 1, value_str());
 407       ndx++;
 408     }
 409   }
 410 
 411   return (jobjectArray) JNIHandles::make_local(THREAD, result_h());
 412 JVM_END
 413 
 414 
 415 /*
 416  * Return the temporary directory that the VM uses for the attach
 417  * and perf data files.
 418  *
 419  * It is important that this directory is well-known and the
 420  * same for all VM instances. It cannot be affected by configuration
 421  * variables such as java.io.tmpdir.
 422  */
 423 JVM_ENTRY(jstring, JVM_GetTemporaryDirectory(JNIEnv *env))
 424   HandleMark hm(THREAD);
 425   const char* temp_dir = os::get_temp_directory();
 426   Handle h = java_lang_String::create_from_platform_dependent_str(temp_dir, CHECK_NULL);
 427   return (jstring) JNIHandles::make_local(THREAD, h());
 428 JVM_END
 429 
 430 
 431 // java.lang.Runtime /////////////////////////////////////////////////////////////////////////
 432 
 433 extern volatile jint vm_created;
 434 
 435 JVM_ENTRY_NO_ENV(void, JVM_BeforeHalt())
 436   EventShutdown event;
 437   if (event.should_commit()) {
 438     event.set_reason("Shutdown requested from Java");
 439     event.commit();
 440   }
 441 JVM_END
 442 
 443 
 444 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code))
 445   before_exit(thread, true);
 446   vm_exit(code);
 447 JVM_END
 448 
 449 
 450 JVM_ENTRY_NO_ENV(void, JVM_GC(void))
 451   if (!DisableExplicitGC) {
 452     EventSystemGC event;
 453     event.set_invokedConcurrent(ExplicitGCInvokesConcurrent);
 454     Universe::heap()->collect(GCCause::_java_lang_system_gc);
 455     event.commit();
 456   }
 457 JVM_END
 458 
 459 
 460 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void))
 461   return Universe::heap()->millis_since_last_whole_heap_examined();
 462 JVM_END
 463 
 464 
 465 static inline jlong convert_size_t_to_jlong(size_t val) {
 466   // In the 64-bit vm, a size_t can overflow a jlong (which is signed).
 467   NOT_LP64 (return (jlong)val;)
 468   LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);)
 469 }
 470 
 471 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void))
 472   size_t n = Universe::heap()->capacity();
 473   return convert_size_t_to_jlong(n);
 474 JVM_END
 475 
 476 
 477 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void))
 478   size_t n = Universe::heap()->unused();
 479   return convert_size_t_to_jlong(n);
 480 JVM_END
 481 
 482 
 483 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void))
 484   size_t n = Universe::heap()->max_capacity();
 485   return convert_size_t_to_jlong(n);
 486 JVM_END
 487 
 488 
 489 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void))
 490   return os::active_processor_count();
 491 JVM_END
 492 
 493 JVM_LEAF(jboolean, JVM_IsUseContainerSupport(void))
 494 #ifdef LINUX
 495   if (UseContainerSupport) {
 496     return JNI_TRUE;
 497   }
 498 #endif
 499   return JNI_FALSE;
 500 JVM_END
 501 
 502 JVM_LEAF(jboolean, JVM_IsContainerized(void))
 503 #ifdef LINUX
 504   if (OSContainer::is_containerized()) {
 505     return JNI_TRUE;
 506   }
 507 #endif
 508   return JNI_FALSE;
 509 JVM_END
 510 
 511 // java.lang.Throwable //////////////////////////////////////////////////////
 512 
 513 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver))
 514   Handle exception(thread, JNIHandles::resolve_non_null(receiver));
 515   java_lang_Throwable::fill_in_stack_trace(exception);
 516 JVM_END
 517 
 518 // java.lang.NullPointerException ///////////////////////////////////////////
 519 
 520 JVM_ENTRY(jstring, JVM_GetExtendedNPEMessage(JNIEnv *env, jthrowable throwable))
 521   if (!ShowCodeDetailsInExceptionMessages) return nullptr;
 522 
 523   oop exc = JNIHandles::resolve_non_null(throwable);
 524 
 525   Method* method;
 526   int bci;
 527   if (!java_lang_Throwable::get_top_method_and_bci(exc, &method, &bci)) {
 528     return nullptr;
 529   }
 530   if (method->is_native()) {
 531     return nullptr;
 532   }
 533 
 534   stringStream ss;
 535   bool ok = BytecodeUtils::get_NPE_message_at(&ss, method, bci);
 536   if (ok) {
 537     oop result = java_lang_String::create_oop_from_str(ss.base(), CHECK_NULL);
 538     return (jstring) JNIHandles::make_local(THREAD, result);
 539   } else {
 540     return nullptr;
 541   }
 542 JVM_END
 543 
 544 // java.lang.StackTraceElement //////////////////////////////////////////////
 545 
 546 
 547 JVM_ENTRY(void, JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject backtrace, jint depth))
 548   Handle backtraceh(THREAD, JNIHandles::resolve(backtrace));
 549   objArrayOop st = objArrayOop(JNIHandles::resolve(elements));
 550   objArrayHandle stack_trace(THREAD, st);
 551   // Fill in the allocated stack trace
 552   java_lang_Throwable::get_stack_trace_elements(depth, backtraceh, stack_trace, CHECK);
 553 JVM_END
 554 
 555 
 556 JVM_ENTRY(void, JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo))
 557   Handle stack_frame_info(THREAD, JNIHandles::resolve_non_null(stackFrameInfo));
 558   Handle stack_trace_element(THREAD, JNIHandles::resolve_non_null(element));
 559   java_lang_StackFrameInfo::to_stack_trace_element(stack_frame_info, stack_trace_element, CHECK);
 560 JVM_END
 561 
 562 
 563 // java.lang.StackWalker //////////////////////////////////////////////////////
 564 JVM_ENTRY(void, JVM_ExpandStackFrameInfo(JNIEnv *env, jobject obj))
 565   Handle stack_frame_info(THREAD, JNIHandles::resolve_non_null(obj));
 566 
 567   bool have_name = (java_lang_StackFrameInfo::name(stack_frame_info()) != nullptr);
 568   bool have_type = (java_lang_StackFrameInfo::type(stack_frame_info()) != nullptr);
 569   Method* method = java_lang_StackFrameInfo::get_method(stack_frame_info());
 570   if (!have_name) {
 571     oop name = StringTable::intern(method->name(), CHECK);
 572     java_lang_StackFrameInfo::set_name(stack_frame_info(), name);
 573   }
 574   if (!have_type) {
 575     Handle type = java_lang_String::create_from_symbol(method->signature(), CHECK);
 576     java_lang_StackFrameInfo::set_type(stack_frame_info(), type());
 577   }
 578 JVM_END
 579 
 580 JVM_ENTRY(jobject, JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jint mode,
 581                                      jint skip_frames, jobject contScope, jobject cont,
 582                                      jint buffer_size, jint start_index, jobjectArray frames))
 583   if (!thread->has_last_Java_frame()) {
 584     THROW_MSG_(vmSymbols::java_lang_InternalError(), "doStackWalk: no stack trace", nullptr);
 585   }
 586 
 587   Handle stackStream_h(THREAD, JNIHandles::resolve_non_null(stackStream));
 588   Handle contScope_h(THREAD, JNIHandles::resolve(contScope));
 589   Handle cont_h(THREAD, JNIHandles::resolve(cont));
 590   // frames array is a ClassFrameInfo[] array when only getting caller reference,
 591   // and a StackFrameInfo[] array (or derivative) otherwise. It should never
 592   // be null.
 593   objArrayOop fa = objArrayOop(JNIHandles::resolve_non_null(frames));
 594   objArrayHandle frames_array_h(THREAD, fa);
 595 
 596   if (frames_array_h->length() < buffer_size) {
 597     THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), "not enough space in buffers", nullptr);
 598   }
 599 
 600   oop result = StackWalk::walk(stackStream_h, mode, skip_frames, contScope_h, cont_h,
 601                                buffer_size, start_index, frames_array_h, CHECK_NULL);
 602   return JNIHandles::make_local(THREAD, result);
 603 JVM_END
 604 
 605 
 606 JVM_ENTRY(jint, JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jint mode, jlong anchor,
 607                                   jint last_batch_count, jint buffer_size, jint start_index,
 608                                   jobjectArray frames))
 609   // frames array is a ClassFrameInfo[] array when only getting caller reference,
 610   // and a StackFrameInfo[] array (or derivative) otherwise. It should never
 611   // be null.
 612   objArrayOop fa = objArrayOop(JNIHandles::resolve_non_null(frames));
 613   objArrayHandle frames_array_h(THREAD, fa);
 614 
 615   if (frames_array_h->length() < buffer_size) {
 616     THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "not enough space in buffers");
 617   }
 618 
 619   Handle stackStream_h(THREAD, JNIHandles::resolve_non_null(stackStream));
 620   return StackWalk::fetchNextBatch(stackStream_h, mode, anchor, last_batch_count, buffer_size,
 621                                   start_index, frames_array_h, THREAD);
 622 JVM_END
 623 
 624 JVM_ENTRY(void, JVM_SetStackWalkContinuation(JNIEnv *env, jobject stackStream, jlong anchor, jobjectArray frames, jobject cont))
 625   objArrayOop fa = objArrayOop(JNIHandles::resolve_non_null(frames));
 626   objArrayHandle frames_array_h(THREAD, fa);
 627   Handle stackStream_h(THREAD, JNIHandles::resolve_non_null(stackStream));
 628   Handle cont_h(THREAD, JNIHandles::resolve_non_null(cont));
 629 
 630   StackWalk::setContinuation(stackStream_h, anchor, frames_array_h, cont_h, THREAD);
 631 JVM_END
 632 
 633 // java.lang.Object ///////////////////////////////////////////////
 634 
 635 
 636 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle))
 637   // as implemented in the classic virtual machine; return 0 if object is null
 638   return handle == nullptr ? 0 :
 639          checked_cast<jint>(ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)));
 640 JVM_END
 641 
 642 
 643 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms))
 644   Handle obj(THREAD, JNIHandles::resolve_non_null(handle));
 645   JavaThreadInObjectWaitState jtiows(thread, ms != 0);
 646   if (JvmtiExport::should_post_monitor_wait()) {
 647     JvmtiExport::post_monitor_wait(thread, obj(), ms);
 648 
 649     // The current thread already owns the monitor and it has not yet
 650     // been added to the wait queue so the current thread cannot be
 651     // made the successor. This means that the JVMTI_EVENT_MONITOR_WAIT
 652     // event handler cannot accidentally consume an unpark() meant for
 653     // the ParkEvent associated with this ObjectMonitor.
 654   }
 655   ObjectSynchronizer::wait(obj, ms, CHECK);
 656 JVM_END
 657 
 658 
 659 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle))
 660   Handle obj(THREAD, JNIHandles::resolve_non_null(handle));
 661   ObjectSynchronizer::notify(obj, CHECK);
 662 JVM_END
 663 
 664 
 665 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle))
 666   Handle obj(THREAD, JNIHandles::resolve_non_null(handle));
 667   ObjectSynchronizer::notifyall(obj, CHECK);
 668 JVM_END
 669 
 670 
 671 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle))
 672   Handle obj(THREAD, JNIHandles::resolve_non_null(handle));
 673   Klass* klass = obj->klass();
 674   JvmtiVMObjectAllocEventCollector oam;
 675 
 676 #ifdef ASSERT
 677   // Just checking that the cloneable flag is set correct
 678   if (obj->is_array()) {
 679     guarantee(klass->is_cloneable(), "all arrays are cloneable");
 680   } else {
 681     guarantee(obj->is_instance(), "should be instanceOop");
 682     bool cloneable = klass->is_subtype_of(vmClasses::Cloneable_klass());
 683     guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag");
 684   }
 685 #endif
 686 
 687   // Check if class of obj supports the Cloneable interface.
 688   // All arrays are considered to be cloneable (See JLS 20.1.5).
 689   // All j.l.r.Reference classes are considered non-cloneable.
 690   if (!klass->is_cloneable() ||
 691       (klass->is_instance_klass() &&

 704   } else {
 705     new_obj_oop = Universe::heap()->obj_allocate(klass, size, CHECK_NULL);
 706   }
 707 
 708   HeapAccess<>::clone(obj(), new_obj_oop, size);
 709 
 710   Handle new_obj(THREAD, new_obj_oop);
 711   // Caution: this involves a java upcall, so the clone should be
 712   // "gc-robust" by this stage.
 713   if (klass->has_finalizer()) {
 714     assert(obj->is_instance(), "should be instanceOop");
 715     new_obj_oop = InstanceKlass::register_finalizer(instanceOop(new_obj()), CHECK_NULL);
 716     new_obj = Handle(THREAD, new_obj_oop);
 717   }
 718 
 719   return JNIHandles::make_local(THREAD, new_obj());
 720 JVM_END
 721 
 722 // java.lang.ref.Finalizer ////////////////////////////////////////////////////
 723 
 724 JVM_ENTRY(void, JVM_ReportFinalizationComplete(JNIEnv * env, jobject finalizee))
 725   MANAGEMENT_ONLY(FinalizerService::on_complete(JNIHandles::resolve_non_null(finalizee), THREAD);)
 726 JVM_END
 727 
 728 JVM_LEAF(jboolean, JVM_IsFinalizationEnabled(JNIEnv * env))
 729   return InstanceKlass::is_finalization_enabled();
 730 JVM_END
 731 
 732 // jdk.internal.vm.Continuation /////////////////////////////////////////////////////
 733 
 734 JVM_ENTRY(void, JVM_RegisterContinuationMethods(JNIEnv *env, jclass cls))
 735   CONT_RegisterNativeMethods(env, cls);
 736 JVM_END
 737 
 738 // java.io.File ///////////////////////////////////////////////////////////////
 739 
 740 JVM_LEAF(char*, JVM_NativePath(char* path))
 741   return os::native_path(path);
 742 JVM_END
 743 
 744 
 745 // Misc. class handling ///////////////////////////////////////////////////////////
 746 
 747 
 748 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env))
 749   // Getting the class of the caller frame.
 750   //
 751   // The call stack at this point looks something like this:
 752   //
 753   // [0] [ @CallerSensitive public jdk.internal.reflect.Reflection.getCallerClass ]
 754   // [1] [ @CallerSensitive API.method                                   ]
 755   // [.] [ (skipped intermediate frames)                                 ]
 756   // [n] [ caller                                                        ]
 757   vframeStream vfst(thread);
 758   // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass
 759   for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) {
 760     Method* m = vfst.method();
 761     assert(m != nullptr, "sanity");
 762     switch (n) {
 763     case 0:
 764       // This must only be called from Reflection.getCallerClass
 765       if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) {
 766         THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass");
 767       }
 768       // fall-through
 769     case 1:
 770       // Frame 0 and 1 must be caller sensitive.
 771       if (!m->caller_sensitive()) {
 772         THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n));
 773       }
 774       break;
 775     default:
 776       if (!m->is_ignored_by_security_stack_walk()) {
 777         // We have reached the desired frame; return the holder class.
 778         return (jclass) JNIHandles::make_local(THREAD, m->method_holder()->java_mirror());
 779       }
 780       break;
 781     }
 782   }
 783   return nullptr;
 784 JVM_END
 785 
 786 
 787 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf))
 788   oop mirror = nullptr;
 789   BasicType t = name2type(utf);
 790   if (t != T_ILLEGAL && !is_reference_type(t)) {
 791     mirror = Universe::java_mirror(t);
 792   }
 793   if (mirror == nullptr) {
 794     THROW_MSG_NULL(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf);
 795   } else {
 796     return (jclass) JNIHandles::make_local(THREAD, mirror);
 797   }
 798 JVM_END
 799 
 800 
 801 // Returns a class loaded by the bootstrap class loader; or null
 802 // if not found.  ClassNotFoundException is not thrown.
 803 // FindClassFromBootLoader is exported to the launcher for windows.
 804 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env,
 805                                               const char* name))
 806   // Java libraries should ensure that name is never null or illegal.
 807   if (name == nullptr || (int)strlen(name) > Symbol::max_length()) {
 808     // It's impossible to create this class;  the name cannot fit
 809     // into the constant pool.
 810     return nullptr;
 811   }
 812   assert(UTF8::is_legal_utf8((const unsigned char*)name, strlen(name), false), "illegal UTF name");
 813 
 814   TempNewSymbol h_name = SymbolTable::new_symbol(name);
 815   Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL);
 816   if (k == nullptr) {
 817     return nullptr;
 818   }
 819 
 820   if (log_is_enabled(Debug, class, resolve)) {
 821     trace_class_resolution(k);
 822   }
 823   return (jclass) JNIHandles::make_local(THREAD, k->java_mirror());
 824 JVM_END
 825 
 826 // Find a class with this name in this loader, using the caller's protection domain.
 827 JVM_ENTRY(jclass, JVM_FindClassFromCaller(JNIEnv* env, const char* name,
 828                                           jboolean init, jobject loader,
 829                                           jclass caller))
 830   TempNewSymbol h_name =
 831        SystemDictionary::class_name_symbol(name, vmSymbols::java_lang_ClassNotFoundException(),
 832                                            CHECK_NULL);
 833 
 834   oop loader_oop = JNIHandles::resolve(loader);
 835   oop from_class = JNIHandles::resolve(caller);
 836   oop protection_domain = nullptr;
 837   // If loader is null, shouldn't call ClassLoader.checkPackageAccess; otherwise get
 838   // NPE. Put it in another way, the bootstrap class loader has all permission and
 839   // thus no checkPackageAccess equivalence in the VM class loader.
 840   // The caller is also passed as null by the java code if there is no security
 841   // manager to avoid the performance cost of getting the calling class.
 842   if (from_class != nullptr && loader_oop != nullptr) {
 843     protection_domain = java_lang_Class::as_Klass(from_class)->protection_domain();
 844   }
 845 
 846   Handle h_loader(THREAD, loader_oop);
 847   Handle h_prot(THREAD, protection_domain);
 848   jclass result = find_class_from_class_loader(env, h_name, init, h_loader,
 849                                                h_prot, false, THREAD);
 850 
 851   if (log_is_enabled(Debug, class, resolve) && result != nullptr) {
 852     trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
 853   }
 854   return result;
 855 JVM_END
 856 
 857 // Currently only called from the old verifier.
 858 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name,
 859                                          jboolean init, jclass from))
 860   TempNewSymbol h_name =
 861        SystemDictionary::class_name_symbol(name, vmSymbols::java_lang_ClassNotFoundException(),
 862                                            CHECK_NULL);
 863   oop from_class_oop = JNIHandles::resolve(from);
 864   Klass* from_class = (from_class_oop == nullptr)
 865                            ? (Klass*)nullptr
 866                            : java_lang_Class::as_Klass(from_class_oop);
 867   oop class_loader = nullptr;
 868   oop protection_domain = nullptr;
 869   if (from_class != nullptr) {
 870     class_loader = from_class->class_loader();
 871     protection_domain = from_class->protection_domain();
 872   }
 873   Handle h_loader(THREAD, class_loader);
 874   Handle h_prot  (THREAD, protection_domain);
 875   jclass result = find_class_from_class_loader(env, h_name, init, h_loader,
 876                                                h_prot, true, thread);
 877 
 878   if (log_is_enabled(Debug, class, resolve) && result != nullptr) {
 879     // this function is generally only used for class loading during verification.

1042                                   ik->external_name(),
1043                                   host_class->external_name(),
1044                                   ik->is_hidden() ? "is hidden" : "is not hidden");
1045     }
1046   }
1047 
1048   if ((!is_hidden || is_nestmate) && !Reflection::is_same_class_package(lookup_k, ik)) {
1049     // non-hidden class or nestmate class must be in the same package as the Lookup class
1050     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Lookup class and defined class are in different packages");
1051   }
1052 
1053   if (init) {
1054     ik->initialize(CHECK_NULL);
1055   } else {
1056     ik->link_class(CHECK_NULL);
1057   }
1058 
1059   return (jclass) JNIHandles::make_local(THREAD, ik->java_mirror());
1060 }
1061 
1062 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd))
1063   return jvm_define_class_common(name, loader, buf, len, pd, nullptr, THREAD);
1064 JVM_END
1065 
1066 /*
1067  * Define a class with the specified lookup class.
1068  *  lookup:  Lookup class
1069  *  name:    the name of the class
1070  *  buf:     class bytes
1071  *  len:     length of class bytes
1072  *  pd:      protection domain
1073  *  init:    initialize the class
1074  *  flags:   properties of the class
1075  *  classData: private static pre-initialized field
1076  */
1077 JVM_ENTRY(jclass, JVM_LookupDefineClass(JNIEnv *env, jclass lookup, const char *name, const jbyte *buf,
1078           jsize len, jobject pd, jboolean initialize, int flags, jobject classData))
1079 
1080   if (lookup == nullptr) {
1081     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Lookup class is null");
1082   }
1083 
1084   assert(buf != nullptr, "buf must not be null");
1085 
1086   return jvm_lookup_define_class(lookup, name, buf, len, pd, initialize, flags, classData, THREAD);
1087 JVM_END
1088 
1089 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source))
1090 
1091   return jvm_define_class_common(name, loader, buf, len, pd, source, THREAD);
1092 JVM_END
1093 
1094 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name))
1095   ResourceMark rm(THREAD);
1096 
1097   Handle h_name (THREAD, JNIHandles::resolve_non_null(name));
1098   char* str = java_lang_String::as_utf8_string(h_name());
1099 
1100   // Sanity check, don't expect null
1101   if (str == nullptr) return nullptr;
1102 
1103   // Internalize the string, converting '.' to '/' in string.
1104   char* p = (char*)str;
1105   while (*p != '\0') {
1106     if (*p == '.') {
1107       *p = '/';
1108     }
1109     p++;
1110   }
1111 
1112   const int str_len = (int)(p - str);
1113   if (str_len > Symbol::max_length()) {
1114     // It's impossible to create this class;  the name cannot fit

1120   // Security Note:
1121   //   The Java level wrapper will perform the necessary security check allowing
1122   //   us to pass the null as the initiating class loader.
1123   Handle h_loader(THREAD, JNIHandles::resolve(loader));
1124   Klass* k = SystemDictionary::find_instance_or_array_klass(THREAD, klass_name,
1125                                                             h_loader,
1126                                                             Handle());
1127 #if INCLUDE_CDS
1128   if (k == nullptr) {
1129     // If the class is not already loaded, try to see if it's in the shared
1130     // archive for the current classloader (h_loader).
1131     k = SystemDictionaryShared::find_or_load_shared_class(klass_name, h_loader, CHECK_NULL);
1132   }
1133 #endif
1134   return (k == nullptr) ? nullptr :
1135             (jclass) JNIHandles::make_local(THREAD, k->java_mirror());
1136 JVM_END
1137 
1138 // Module support //////////////////////////////////////////////////////////////////////////////
1139 
1140 JVM_ENTRY(void, JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version,
1141                                  jstring location, jobjectArray packages))
1142   Handle h_module (THREAD, JNIHandles::resolve(module));
1143   Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1144 JVM_END
1145 
1146 JVM_ENTRY(void, JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module))
1147   Handle h_module (THREAD, JNIHandles::resolve(module));
1148   Modules::set_bootloader_unnamed_module(h_module, CHECK);
1149 JVM_END
1150 
1151 JVM_ENTRY(void, JVM_AddModuleExports(JNIEnv *env, jobject from_module, jstring package, jobject to_module))
1152   Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1153   Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1154   Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1155 JVM_END
1156 
1157 JVM_ENTRY(void, JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, jstring package))
1158   Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1159   Modules::add_module_exports_to_all_unnamed(h_from_module, package, CHECK);
1160 JVM_END
1161 
1162 JVM_ENTRY(void, JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, jstring package))
1163   Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1164   Modules::add_module_exports(h_from_module, package, Handle(), CHECK);
1165 JVM_END
1166 
1167 JVM_ENTRY (void, JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module))
1168   Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1169   Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1170   Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1171 JVM_END
1172 
1173 JVM_ENTRY(void, JVM_DefineArchivedModules(JNIEnv *env, jobject platform_loader, jobject system_loader))
1174   Handle h_platform_loader (THREAD, JNIHandles::resolve(platform_loader));
1175   Handle h_system_loader (THREAD, JNIHandles::resolve(system_loader));
1176   Modules::define_archived_modules(h_platform_loader, h_system_loader, CHECK);
1177 JVM_END
1178 
1179 // Reflection support //////////////////////////////////////////////////////////////////////////////
1180 
1181 JVM_ENTRY(jstring, JVM_InitClassName(JNIEnv *env, jclass cls))
1182   assert (cls != nullptr, "illegal class");
1183   JvmtiVMObjectAllocEventCollector oam;
1184   ResourceMark rm(THREAD);
1185   HandleMark hm(THREAD);
1186   Handle java_class(THREAD, JNIHandles::resolve(cls));
1187   oop result = java_lang_Class::name(java_class, CHECK_NULL);
1188   return (jstring) JNIHandles::make_local(THREAD, result);
1189 JVM_END
1190 
1191 
1192 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls))
1193   JvmtiVMObjectAllocEventCollector oam;
1194   oop mirror = JNIHandles::resolve_non_null(cls);
1195 
1196   // Special handling for primitive objects
1197   if (java_lang_Class::is_primitive(mirror)) {
1198     // Primitive objects does not have any interfaces
1199     objArrayOop r = oopFactory::new_objArray(vmClasses::Class_klass(), 0, CHECK_NULL);
1200     return (jobjectArray) JNIHandles::make_local(THREAD, r);
1201   }
1202 
1203   Klass* klass = java_lang_Class::as_Klass(mirror);
1204   // Figure size of result array
1205   int size;
1206   if (klass->is_instance_klass()) {
1207     size = InstanceKlass::cast(klass)->local_interfaces()->length();
1208   } else {
1209     assert(klass->is_objArray_klass() || klass->is_typeArray_klass(), "Illegal mirror klass");
1210     size = 2;
1211   }
1212 
1213   // Allocate result array
1214   objArrayOop r = oopFactory::new_objArray(vmClasses::Class_klass(), size, CHECK_NULL);
1215   objArrayHandle result (THREAD, r);
1216   // Fill in result
1217   if (klass->is_instance_klass()) {
1218     // Regular instance klass, fill in all local interfaces
1219     for (int index = 0; index < size; index++) {
1220       Klass* k = InstanceKlass::cast(klass)->local_interfaces()->at(index);
1221       result->obj_at_put(index, k->java_mirror());
1222     }
1223   } else {
1224     // All arrays implement java.lang.Cloneable and java.io.Serializable
1225     result->obj_at_put(0, vmClasses::Cloneable_klass()->java_mirror());
1226     result->obj_at_put(1, vmClasses::Serializable_klass()->java_mirror());
1227   }
1228   return (jobjectArray) JNIHandles::make_local(THREAD, result());
1229 JVM_END
1230 
1231 
1232 JVM_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls))
1233   oop mirror = JNIHandles::resolve_non_null(cls);
1234   if (java_lang_Class::is_primitive(mirror)) {
1235     return JNI_FALSE;
1236   }
1237   Klass* k = java_lang_Class::as_Klass(mirror);
1238   jboolean result = k->is_interface();
1239   assert(!result || k->is_instance_klass(),
1240          "all interfaces are instance types");
1241   // The compiler intrinsic for isInterface tests the
1242   // Klass::_access_flags bits in the same way.
1243   return result;
1244 JVM_END
1245 
1246 JVM_ENTRY(jboolean, JVM_IsHiddenClass(JNIEnv *env, jclass cls))
1247   oop mirror = JNIHandles::resolve_non_null(cls);
1248   if (java_lang_Class::is_primitive(mirror)) {
1249     return JNI_FALSE;
1250   }
1251   Klass* k = java_lang_Class::as_Klass(mirror);
1252   return k->is_hidden();
1253 JVM_END
1254 
1255 
1256 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls))
1257   oop mirror = JNIHandles::resolve_non_null(cls);
1258   if (mirror == nullptr) {
1259     THROW_(vmSymbols::java_lang_NullPointerException(), nullptr);
1260   }
1261 
1262   if (java_lang_Class::is_primitive(mirror)) {
1263     // Primitive types does not have a protection domain.
1264     return nullptr;
1265   }
1266 
1267   oop pd = java_lang_Class::protection_domain(mirror);
1268   return (jobject) JNIHandles::make_local(THREAD, pd);
1269 JVM_END
1270 
1271 
1272 // Returns the inherited_access_control_context field of the running thread.
1273 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls))
1274   oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj());
1275   return JNIHandles::make_local(THREAD, result);
1276 JVM_END
1277 
1278 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls))
1279   if (!UsePrivilegedStack) return nullptr;
1280 
1281   ResourceMark rm(THREAD);
1282   GrowableArray<Handle>* local_array = new GrowableArray<Handle>(12);
1283   JvmtiVMObjectAllocEventCollector oam;
1284 
1285   // count the protection domains on the execution stack. We collapse
1286   // duplicate consecutive protection domains into a single one, as
1287   // well as stopping when we hit a privileged frame.
1288 
1289   oop previous_protection_domain = nullptr;
1290   Handle privileged_context(thread, nullptr);
1291   bool is_privileged = false;
1292   oop protection_domain = nullptr;
1293 
1294   // Iterate through Java frames
1295   vframeStream vfst(thread);
1296   for(; !vfst.at_end(); vfst.next()) {
1297     // get method of frame
1298     Method* method = vfst.method();

1342                                                  local_array->length(), CHECK_NULL);
1343   objArrayHandle h_context(thread, context);
1344   for (int index = 0; index < local_array->length(); index++) {
1345     h_context->obj_at_put(index, local_array->at(index)());
1346   }
1347 
1348   oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL);
1349 
1350   return JNIHandles::make_local(THREAD, result);
1351 JVM_END
1352 
1353 class ScopedValueBindingsResolver {
1354 public:
1355   InstanceKlass* Carrier_klass;
1356   ScopedValueBindingsResolver(JavaThread* THREAD) {
1357     Klass *k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_ScopedValue_Carrier(), true, THREAD);
1358     Carrier_klass = InstanceKlass::cast(k);
1359   }
1360 };
1361 
1362 JVM_ENTRY(jobject, JVM_FindScopedValueBindings(JNIEnv *env, jclass cls))
1363   ResourceMark rm(THREAD);
1364   GrowableArray<Handle>* local_array = new GrowableArray<Handle>(12);
1365   JvmtiVMObjectAllocEventCollector oam;
1366 
1367   static ScopedValueBindingsResolver resolver(THREAD);
1368 
1369   // Iterate through Java frames
1370   vframeStream vfst(thread);
1371   for(; !vfst.at_end(); vfst.next()) {
1372     int loc = -1;
1373     // get method of frame
1374     Method* method = vfst.method();
1375 
1376     Symbol *name = method->name();
1377 
1378     InstanceKlass* holder = method->method_holder();
1379     if (name == vmSymbols::runWith_method_name()) {
1380       if (holder == vmClasses::Thread_klass()
1381           || holder == resolver.Carrier_klass) {
1382         loc = 1;
1383       }
1384     }
1385 
1386     if (loc != -1) {
1387       javaVFrame *frame = vfst.asJavaVFrame();
1388       StackValueCollection* locals = frame->locals();
1389       StackValue* head_sv = locals->at(loc); // java/lang/ScopedValue$Snapshot
1390       Handle result = head_sv->get_obj();
1391       assert(!head_sv->obj_is_scalar_replaced(), "found scalar-replaced object");
1392       if (result() != nullptr) {
1393         return JNIHandles::make_local(THREAD, result());
1394       }
1395     }
1396   }
1397 
1398   return nullptr;
1399 JVM_END
1400 
1401 JVM_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls))
1402   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
1403   return (k != nullptr) && k->is_array_klass() ? true : false;
1404 JVM_END
1405 
1406 
1407 JVM_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls))
1408   oop mirror = JNIHandles::resolve_non_null(cls);
1409   return (jboolean) java_lang_Class::is_primitive(mirror);
1410 JVM_END
1411 
1412 
1413 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls))
1414   oop mirror = JNIHandles::resolve_non_null(cls);
1415   if (java_lang_Class::is_primitive(mirror)) {
1416     // Primitive type
1417     return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC;
1418   }
1419 
1420   Klass* k = java_lang_Class::as_Klass(mirror);
1421   debug_only(int computed_modifiers = k->compute_modifier_flags());
1422   assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK");
1423   return k->modifier_flags();
1424 JVM_END
1425 
1426 
1427 // Inner class reflection ///////////////////////////////////////////////////////////////////////////////
1428 
1429 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass))
1430   JvmtiVMObjectAllocEventCollector oam;
1431   // ofClass is a reference to a java_lang_Class object. The mirror object
1432   // of an InstanceKlass
1433   oop ofMirror = JNIHandles::resolve_non_null(ofClass);
1434   if (java_lang_Class::is_primitive(ofMirror) ||
1435       ! java_lang_Class::as_Klass(ofMirror)->is_instance_klass()) {
1436     oop result = oopFactory::new_objArray(vmClasses::Class_klass(), 0, CHECK_NULL);
1437     return (jobjectArray)JNIHandles::make_local(THREAD, result);
1438   }
1439 
1440   InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(ofMirror));
1441   InnerClassesIterator iter(k);
1442 
1443   if (iter.length() == 0) {
1444     // Neither an inner nor outer class
1445     oop result = oopFactory::new_objArray(vmClasses::Class_klass(), 0, CHECK_NULL);
1446     return (jobjectArray)JNIHandles::make_local(THREAD, result);
1447   }
1448 
1449   // find inner class info

1475            result->obj_at_put(members, inner_klass->java_mirror());
1476            members++;
1477         }
1478       }
1479     }
1480   }
1481 
1482   if (members != length) {
1483     // Return array of right length
1484     objArrayOop res = oopFactory::new_objArray(vmClasses::Class_klass(), members, CHECK_NULL);
1485     for(int i = 0; i < members; i++) {
1486       res->obj_at_put(i, result->obj_at(i));
1487     }
1488     return (jobjectArray)JNIHandles::make_local(THREAD, res);
1489   }
1490 
1491   return (jobjectArray)JNIHandles::make_local(THREAD, result());
1492 JVM_END
1493 
1494 
1495 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass))
1496 {
1497   // ofClass is a reference to a java_lang_Class object.
1498   oop ofMirror = JNIHandles::resolve_non_null(ofClass);
1499   if (java_lang_Class::is_primitive(ofMirror)) {
1500     return nullptr;
1501   }
1502   Klass* klass = java_lang_Class::as_Klass(ofMirror);
1503   if (!klass->is_instance_klass()) {
1504     return nullptr;
1505   }
1506 
1507   bool inner_is_member = false;
1508   Klass* outer_klass
1509     = InstanceKlass::cast(klass)->compute_enclosing_class(&inner_is_member, CHECK_NULL);
1510   if (outer_klass == nullptr)  return nullptr;  // already a top-level class
1511   if (!inner_is_member)  return nullptr;     // a hidden class (inside a method)
1512   return (jclass) JNIHandles::make_local(THREAD, outer_klass->java_mirror());
1513 }
1514 JVM_END
1515 
1516 JVM_ENTRY(jstring, JVM_GetSimpleBinaryName(JNIEnv *env, jclass cls))
1517 {
1518   oop mirror = JNIHandles::resolve_non_null(cls);
1519   if (java_lang_Class::is_primitive(mirror)) {
1520     return nullptr;
1521   }
1522   Klass* klass = java_lang_Class::as_Klass(mirror);
1523   if (!klass->is_instance_klass()) {
1524     return nullptr;
1525   }
1526   InstanceKlass* k = InstanceKlass::cast(klass);
1527   int ooff = 0, noff = 0;
1528   if (k->find_inner_classes_attr(&ooff, &noff, THREAD)) {
1529     if (noff != 0) {
1530       constantPoolHandle i_cp(thread, k->constants());
1531       Symbol* name = i_cp->symbol_at(noff);
1532       Handle str = java_lang_String::create_from_symbol(name, CHECK_NULL);
1533       return (jstring) JNIHandles::make_local(THREAD, str());
1534     }
1535   }
1536   return nullptr;
1537 }
1538 JVM_END
1539 
1540 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls))
1541   assert (cls != nullptr, "illegal class");
1542   JvmtiVMObjectAllocEventCollector oam;
1543   ResourceMark rm(THREAD);
1544   oop mirror = JNIHandles::resolve_non_null(cls);
1545   // Return null for arrays and primitives
1546   if (!java_lang_Class::is_primitive(mirror)) {
1547     Klass* k = java_lang_Class::as_Klass(mirror);
1548     if (k->is_instance_klass()) {
1549       Symbol* sym = InstanceKlass::cast(k)->generic_signature();
1550       if (sym == nullptr) return nullptr;
1551       Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL);
1552       return (jstring) JNIHandles::make_local(THREAD, str());
1553     }
1554   }
1555   return nullptr;
1556 JVM_END
1557 
1558 
1559 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls))
1560   assert (cls != nullptr, "illegal class");
1561   oop mirror = JNIHandles::resolve_non_null(cls);
1562   // Return null for arrays and primitives
1563   if (!java_lang_Class::is_primitive(mirror)) {
1564     Klass* k = java_lang_Class::as_Klass(mirror);
1565     if (k->is_instance_klass()) {
1566       typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL);
1567       return (jbyteArray) JNIHandles::make_local(THREAD, a);
1568     }
1569   }
1570   return nullptr;
1571 JVM_END
1572 
1573 
1574 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd) {
1575   // some of this code was adapted from from jni_FromReflectedField
1576 
1577   oop reflected = JNIHandles::resolve_non_null(field);
1578   oop mirror    = java_lang_reflect_Field::clazz(reflected);
1579   Klass* k    = java_lang_Class::as_Klass(mirror);

1608   int slot      = 0;
1609 
1610   if (reflected->klass() == vmClasses::reflect_Constructor_klass()) {
1611     mirror = java_lang_reflect_Constructor::clazz(reflected);
1612     slot   = java_lang_reflect_Constructor::slot(reflected);
1613   } else {
1614     assert(reflected->klass() == vmClasses::reflect_Method_klass(),
1615            "wrong type");
1616     mirror = java_lang_reflect_Method::clazz(reflected);
1617     slot   = java_lang_reflect_Method::slot(reflected);
1618   }
1619   Klass* k = java_lang_Class::as_Klass(mirror);
1620 
1621   Method* m = InstanceKlass::cast(k)->method_with_idnum(slot);
1622   assert(m != nullptr, "cannot find method");
1623   return m;  // caller has to deal with null in product mode
1624 }
1625 
1626 /* Type use annotations support (JDK 1.8) */
1627 
1628 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls))
1629   assert (cls != nullptr, "illegal class");
1630   ResourceMark rm(THREAD);
1631   // Return null for arrays and primitives
1632   if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) {
1633     Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls));
1634     if (k->is_instance_klass()) {
1635       AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations();
1636       if (type_annotations != nullptr) {
1637         typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL);
1638         return (jbyteArray) JNIHandles::make_local(THREAD, a);
1639       }
1640     }
1641   }
1642   return nullptr;
1643 JVM_END
1644 
1645 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method))
1646   assert (method != nullptr, "illegal method");
1647   // method is a handle to a java.lang.reflect.Method object
1648   Method* m = jvm_get_method_common(method);
1649   if (m == nullptr) {
1650     return nullptr;
1651   }
1652 
1653   AnnotationArray* type_annotations = m->type_annotations();
1654   if (type_annotations != nullptr) {
1655     typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL);
1656     return (jbyteArray) JNIHandles::make_local(THREAD, a);
1657   }
1658 
1659   return nullptr;
1660 JVM_END
1661 
1662 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field))
1663   assert (field != nullptr, "illegal field");
1664   fieldDescriptor fd;
1665   bool gotFd = jvm_get_field_common(field, fd);
1666   if (!gotFd) {
1667     return nullptr;
1668   }
1669 
1670   return (jbyteArray) JNIHandles::make_local(THREAD, Annotations::make_java_array(fd.type_annotations(), THREAD));
1671 JVM_END
1672 
1673 static void bounds_check(const constantPoolHandle& cp, jint index, TRAPS) {
1674   if (!cp->is_within_bounds(index)) {
1675     THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds");
1676   }
1677 }
1678 
1679 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method))
1680 {
1681   // method is a handle to a java.lang.reflect.Method object
1682   Method* method_ptr = jvm_get_method_common(method);
1683   methodHandle mh (THREAD, method_ptr);
1684   Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method));
1685   const int num_params = mh->method_parameters_length();
1686 
1687   if (num_params < 0) {
1688     // A -1 return value from method_parameters_length means there is no
1689     // parameter data.  Return null to indicate this to the reflection
1690     // API.
1691     assert(num_params == -1, "num_params should be -1 if it is less than zero");
1692     return (jobjectArray)nullptr;
1693   } else {
1694     // Otherwise, we return something up to reflection, even if it is
1695     // a zero-length array.  Why?  Because in some cases this can
1696     // trigger a MalformedParametersException.
1697 
1698     // make sure all the symbols are properly formatted
1699     for (int i = 0; i < num_params; i++) {

1712     objArrayOop result_oop = oopFactory::new_objArray(vmClasses::reflect_Parameter_klass(), num_params, CHECK_NULL);
1713     objArrayHandle result (THREAD, result_oop);
1714 
1715     for (int i = 0; i < num_params; i++) {
1716       MethodParametersElement* params = mh->method_parameters_start();
1717       // For a 0 index, give a null symbol
1718       Symbol* sym = 0 != params[i].name_cp_index ?
1719         mh->constants()->symbol_at(params[i].name_cp_index) : nullptr;
1720       int flags = params[i].flags;
1721       oop param = Reflection::new_parameter(reflected_method, i, sym,
1722                                             flags, CHECK_NULL);
1723       result->obj_at_put(i, param);
1724     }
1725     return (jobjectArray)JNIHandles::make_local(THREAD, result());
1726   }
1727 }
1728 JVM_END
1729 
1730 // New (JDK 1.4) reflection implementation /////////////////////////////////////
1731 
1732 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly))
1733 {
1734   JvmtiVMObjectAllocEventCollector oam;
1735 
1736   oop ofMirror = JNIHandles::resolve_non_null(ofClass);
1737   // Exclude primitive types and array types
1738   if (java_lang_Class::is_primitive(ofMirror) ||
1739       java_lang_Class::as_Klass(ofMirror)->is_array_klass()) {
1740     // Return empty array
1741     oop res = oopFactory::new_objArray(vmClasses::reflect_Field_klass(), 0, CHECK_NULL);
1742     return (jobjectArray) JNIHandles::make_local(THREAD, res);
1743   }
1744 
1745   InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(ofMirror));
1746   constantPoolHandle cp(THREAD, k->constants());
1747 
1748   // Ensure class is linked
1749   k->link_class(CHECK_NULL);
1750 
1751   // Allocate result
1752   int num_fields;

1763   objArrayOop r = oopFactory::new_objArray(vmClasses::reflect_Field_klass(), num_fields, CHECK_NULL);
1764   objArrayHandle result (THREAD, r);
1765 
1766   int out_idx = 0;
1767   fieldDescriptor fd;
1768   for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
1769     if (!publicOnly || fs.access_flags().is_public()) {
1770       fd.reinitialize(k, fs.index());
1771       oop field = Reflection::new_field(&fd, CHECK_NULL);
1772       result->obj_at_put(out_idx, field);
1773       ++out_idx;
1774     }
1775   }
1776   assert(out_idx == num_fields, "just checking");
1777   return (jobjectArray) JNIHandles::make_local(THREAD, result());
1778 }
1779 JVM_END
1780 
1781 // A class is a record if and only if it is final and a direct subclass of
1782 // java.lang.Record and has a Record attribute; otherwise, it is not a record.
1783 JVM_ENTRY(jboolean, JVM_IsRecord(JNIEnv *env, jclass cls))
1784 {
1785   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
1786   if (k != nullptr && k->is_instance_klass()) {
1787     InstanceKlass* ik = InstanceKlass::cast(k);
1788     return ik->is_record();
1789   } else {
1790     return false;
1791   }
1792 }
1793 JVM_END
1794 
1795 // Returns an array containing the components of the Record attribute,
1796 // or null if the attribute is not present.
1797 //
1798 // Note that this function returns the components of the Record attribute
1799 // even if the class is not a record.
1800 JVM_ENTRY(jobjectArray, JVM_GetRecordComponents(JNIEnv* env, jclass ofClass))
1801 {
1802   Klass* c = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass));
1803   assert(c->is_instance_klass(), "must be");
1804   InstanceKlass* ik = InstanceKlass::cast(c);
1805 
1806   Array<RecordComponent*>* components = ik->record_components();
1807   if (components != nullptr) {
1808     JvmtiVMObjectAllocEventCollector oam;
1809     constantPoolHandle cp(THREAD, ik->constants());
1810     int length = components->length();
1811     assert(length >= 0, "unexpected record_components length");
1812     objArrayOop record_components =
1813       oopFactory::new_objArray(vmClasses::RecordComponent_klass(), length, CHECK_NULL);
1814     objArrayHandle components_h (THREAD, record_components);
1815 
1816     for (int x = 0; x < length; x++) {
1817       RecordComponent* component = components->at(x);
1818       assert(component != nullptr, "unexpected null record component");
1819       oop component_oop = java_lang_reflect_RecordComponent::create(ik, component, CHECK_NULL);
1820       components_h->obj_at_put(x, component_oop);

1887   for (int i = 0; i < num_methods; i++) {
1888     methodHandle method(THREAD, k->method_with_idnum(idnums->at(i)));
1889     if (method.is_null()) {
1890       // Method may have been deleted and seems this API can handle null
1891       // Otherwise should probably put a method that throws NSME
1892       result->obj_at_put(i, nullptr);
1893     } else {
1894       oop m;
1895       if (want_constructor) {
1896         m = Reflection::new_constructor(method, CHECK_NULL);
1897       } else {
1898         m = Reflection::new_method(method, false, CHECK_NULL);
1899       }
1900       result->obj_at_put(i, m);
1901     }
1902   }
1903 
1904   return (jobjectArray) JNIHandles::make_local(THREAD, result());
1905 }
1906 
1907 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly))
1908 {
1909   return get_class_declared_methods_helper(env, ofClass, publicOnly,
1910                                            /*want_constructor*/ false,
1911                                            vmClasses::reflect_Method_klass(), THREAD);
1912 }
1913 JVM_END
1914 
1915 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly))
1916 {
1917   return get_class_declared_methods_helper(env, ofClass, publicOnly,
1918                                            /*want_constructor*/ true,
1919                                            vmClasses::reflect_Constructor_klass(), THREAD);
1920 }
1921 JVM_END
1922 
1923 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls))
1924 {
1925   oop mirror = JNIHandles::resolve_non_null(cls);
1926   if (java_lang_Class::is_primitive(mirror)) {
1927     // Primitive type
1928     return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC;
1929   }
1930 
1931   Klass* k = java_lang_Class::as_Klass(mirror);
1932   return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS;
1933 }
1934 JVM_END
1935 
1936 JVM_ENTRY(jboolean, JVM_AreNestMates(JNIEnv *env, jclass current, jclass member))
1937 {
1938   Klass* c = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(current));
1939   assert(c->is_instance_klass(), "must be");
1940   InstanceKlass* ck = InstanceKlass::cast(c);
1941   Klass* m = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(member));
1942   assert(m->is_instance_klass(), "must be");
1943   InstanceKlass* mk = InstanceKlass::cast(m);
1944   return ck->has_nestmate_access_to(mk, THREAD);
1945 }
1946 JVM_END
1947 
1948 JVM_ENTRY(jclass, JVM_GetNestHost(JNIEnv* env, jclass current))
1949 {
1950   // current is not a primitive or array class
1951   Klass* c = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(current));
1952   assert(c->is_instance_klass(), "must be");
1953   InstanceKlass* ck = InstanceKlass::cast(c);
1954   InstanceKlass* host = ck->nest_host(THREAD);
1955   return (jclass) (host == nullptr ? nullptr :
1956                    JNIHandles::make_local(THREAD, host->java_mirror()));
1957 }
1958 JVM_END
1959 
1960 JVM_ENTRY(jobjectArray, JVM_GetNestMembers(JNIEnv* env, jclass current))
1961 {
1962   // current is not a primitive or array class
1963   ResourceMark rm(THREAD);
1964   Klass* c = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(current));
1965   assert(c->is_instance_klass(), "must be");
1966   InstanceKlass* ck = InstanceKlass::cast(c);
1967   InstanceKlass* host = ck->nest_host(THREAD);
1968 
1969   log_trace(class, nestmates)("Calling GetNestMembers for type %s with nest-host %s",
1970                               ck->external_name(), host->external_name());
1971   {
1972     JvmtiVMObjectAllocEventCollector oam;
1973     Array<u2>* members = host->nest_members();
1974     int length = members == nullptr ? 0 : members->length();
1975 
1976     log_trace(class, nestmates)(" - host has %d listed nest members", length);
1977 
1978     // nest host is first in the array so make it one bigger
1979     objArrayOop r = oopFactory::new_objArray(vmClasses::Class_klass(),
1980                                              length + 1, CHECK_NULL);

2020         log_trace(class, nestmates)(" - compacting array from length %d to %d",
2021                                     length + 1, count + 1);
2022 
2023         objArrayOop r2 = oopFactory::new_objArray(vmClasses::Class_klass(),
2024                                                   count + 1, CHECK_NULL);
2025         objArrayHandle result2(THREAD, r2);
2026         for (int i = 0; i < count + 1; i++) {
2027           result2->obj_at_put(i, result->obj_at(i));
2028         }
2029         return (jobjectArray)JNIHandles::make_local(THREAD, result2());
2030       }
2031     }
2032     else {
2033       assert(host == ck || ck->is_hidden(), "must be singleton nest or dynamic nestmate");
2034     }
2035     return (jobjectArray)JNIHandles::make_local(THREAD, result());
2036   }
2037 }
2038 JVM_END
2039 
2040 JVM_ENTRY(jobjectArray, JVM_GetPermittedSubclasses(JNIEnv* env, jclass current))
2041 {
2042   oop mirror = JNIHandles::resolve_non_null(current);
2043   assert(!java_lang_Class::is_primitive(mirror), "should not be");
2044   Klass* c = java_lang_Class::as_Klass(mirror);
2045   assert(c->is_instance_klass(), "must be");
2046   InstanceKlass* ik = InstanceKlass::cast(c);
2047   ResourceMark rm(THREAD);
2048   log_trace(class, sealed)("Calling GetPermittedSubclasses for %s type %s",
2049                            ik->is_sealed() ? "sealed" : "non-sealed", ik->external_name());
2050   if (ik->is_sealed()) {
2051     JvmtiVMObjectAllocEventCollector oam;
2052     Array<u2>* subclasses = ik->permitted_subclasses();
2053     int length = subclasses->length();
2054 
2055     log_trace(class, sealed)(" - sealed class has %d permitted subclasses", length);
2056 
2057     objArrayOop r = oopFactory::new_objArray(vmClasses::Class_klass(),
2058                                              length, CHECK_NULL);
2059     objArrayHandle result(THREAD, r);
2060     int count = 0;

2083     }
2084     if (count < length) {
2085       // we had invalid entries so we need to compact the array
2086       objArrayOop r2 = oopFactory::new_objArray(vmClasses::Class_klass(),
2087                                                 count, CHECK_NULL);
2088       objArrayHandle result2(THREAD, r2);
2089       for (int i = 0; i < count; i++) {
2090         result2->obj_at_put(i, result->obj_at(i));
2091       }
2092       return (jobjectArray)JNIHandles::make_local(THREAD, result2());
2093     }
2094     return (jobjectArray)JNIHandles::make_local(THREAD, result());
2095   } else {
2096     return nullptr;
2097   }
2098 }
2099 JVM_END
2100 
2101 // Constant pool access //////////////////////////////////////////////////////////
2102 
2103 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls))
2104 {
2105   JvmtiVMObjectAllocEventCollector oam;
2106   oop mirror = JNIHandles::resolve_non_null(cls);
2107   // Return null for primitives and arrays
2108   if (!java_lang_Class::is_primitive(mirror)) {
2109     Klass* k = java_lang_Class::as_Klass(mirror);
2110     if (k->is_instance_klass()) {
2111       InstanceKlass* k_h = InstanceKlass::cast(k);
2112       Handle jcp = reflect_ConstantPool::create(CHECK_NULL);
2113       reflect_ConstantPool::set_cp(jcp(), k_h->constants());
2114       return JNIHandles::make_local(THREAD, jcp());
2115     }
2116   }
2117   return nullptr;
2118 }
2119 JVM_END
2120 
2121 
2122 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused))
2123 {
2124   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2125   return cp->length();
2126 }
2127 JVM_END
2128 
2129 
2130 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2131 {
2132   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2133   bounds_check(cp, index, CHECK_NULL);
2134   constantTag tag = cp->tag_at(index);
2135   if (!tag.is_klass() && !tag.is_unresolved_klass()) {
2136     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2137   }
2138   Klass* k = cp->klass_at(index, CHECK_NULL);
2139   return (jclass) JNIHandles::make_local(THREAD, k->java_mirror());
2140 }
2141 JVM_END
2142 
2143 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index))
2144 {
2145   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2146   bounds_check(cp, index, CHECK_NULL);
2147   constantTag tag = cp->tag_at(index);
2148   if (!tag.is_klass() && !tag.is_unresolved_klass()) {
2149     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2150   }
2151   Klass* k = ConstantPool::klass_at_if_loaded(cp, index);
2152   if (k == nullptr) return nullptr;
2153   return (jclass) JNIHandles::make_local(THREAD, k->java_mirror());
2154 }
2155 JVM_END
2156 
2157 static jobject get_method_at_helper(const constantPoolHandle& cp, jint index, bool force_resolution, TRAPS) {
2158   constantTag tag = cp->tag_at(index);
2159   if (!tag.is_method() && !tag.is_interface_method()) {
2160     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2161   }
2162   int klass_ref  = cp->uncached_klass_ref_index_at(index);
2163   Klass* k_o;

2167     k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref);
2168     if (k_o == nullptr) return nullptr;
2169   }
2170   InstanceKlass* k = InstanceKlass::cast(k_o);
2171   Symbol* name = cp->uncached_name_ref_at(index);
2172   Symbol* sig  = cp->uncached_signature_ref_at(index);
2173   methodHandle m (THREAD, k->find_method(name, sig));
2174   if (m.is_null()) {
2175     THROW_MSG_NULL(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class");
2176   }
2177   oop method;
2178   if (m->is_object_initializer()) {
2179     method = Reflection::new_constructor(m, CHECK_NULL);
2180   } else {
2181     // new_method accepts <clinit> as Method here
2182     method = Reflection::new_method(m, true, CHECK_NULL);
2183   }
2184   return JNIHandles::make_local(THREAD, method);
2185 }
2186 
2187 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2188 {
2189   JvmtiVMObjectAllocEventCollector oam;
2190   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2191   bounds_check(cp, index, CHECK_NULL);
2192   jobject res = get_method_at_helper(cp, index, true, CHECK_NULL);
2193   return res;
2194 }
2195 JVM_END
2196 
2197 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index))
2198 {
2199   JvmtiVMObjectAllocEventCollector oam;
2200   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2201   bounds_check(cp, index, CHECK_NULL);
2202   jobject res = get_method_at_helper(cp, index, false, CHECK_NULL);
2203   return res;
2204 }
2205 JVM_END
2206 
2207 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) {
2208   constantTag tag = cp->tag_at(index);
2209   if (!tag.is_field()) {
2210     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2211   }
2212   int klass_ref  = cp->uncached_klass_ref_index_at(index);
2213   Klass* k_o;
2214   if (force_resolution) {
2215     k_o = cp->klass_at(klass_ref, CHECK_NULL);
2216   } else {
2217     k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref);
2218     if (k_o == nullptr) return nullptr;
2219   }
2220   InstanceKlass* k = InstanceKlass::cast(k_o);
2221   Symbol* name = cp->uncached_name_ref_at(index);
2222   Symbol* sig  = cp->uncached_signature_ref_at(index);
2223   fieldDescriptor fd;
2224   Klass* target_klass = k->find_field(name, sig, &fd);
2225   if (target_klass == nullptr) {
2226     THROW_MSG_NULL(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class");
2227   }
2228   oop field = Reflection::new_field(&fd, CHECK_NULL);
2229   return JNIHandles::make_local(THREAD, field);
2230 }
2231 
2232 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index))
2233 {
2234   JvmtiVMObjectAllocEventCollector oam;
2235   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2236   bounds_check(cp, index, CHECK_NULL);
2237   jobject res = get_field_at_helper(cp, index, true, CHECK_NULL);
2238   return res;
2239 }
2240 JVM_END
2241 
2242 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index))
2243 {
2244   JvmtiVMObjectAllocEventCollector oam;
2245   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2246   bounds_check(cp, index, CHECK_NULL);
2247   jobject res = get_field_at_helper(cp, index, false, CHECK_NULL);
2248   return res;
2249 }
2250 JVM_END
2251 
2252 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2253 {
2254   JvmtiVMObjectAllocEventCollector oam;
2255   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2256   bounds_check(cp, index, CHECK_NULL);
2257   constantTag tag = cp->tag_at(index);
2258   if (!tag.is_field_or_method()) {
2259     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2260   }
2261   int klass_ref = cp->uncached_klass_ref_index_at(index);
2262   Symbol*  klass_name  = cp->klass_name_at(klass_ref);
2263   Symbol*  member_name = cp->uncached_name_ref_at(index);
2264   Symbol*  member_sig  = cp->uncached_signature_ref_at(index);
2265   objArrayOop  dest_o = oopFactory::new_objArray(vmClasses::String_klass(), 3, CHECK_NULL);
2266   objArrayHandle dest(THREAD, dest_o);
2267   Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL);
2268   dest->obj_at_put(0, str());
2269   str = java_lang_String::create_from_symbol(member_name, CHECK_NULL);
2270   dest->obj_at_put(1, str());
2271   str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL);
2272   dest->obj_at_put(2, str());
2273   return (jobjectArray) JNIHandles::make_local(THREAD, dest());
2274 }
2275 JVM_END
2276 
2277 JVM_ENTRY(jint, JVM_ConstantPoolGetClassRefIndexAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2278 {
2279   JvmtiVMObjectAllocEventCollector oam;
2280   constantPoolHandle cp(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2281   bounds_check(cp, index, CHECK_0);
2282   constantTag tag = cp->tag_at(index);
2283   if (!tag.is_field_or_method()) {
2284     THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2285   }
2286   return (jint) cp->uncached_klass_ref_index_at(index);
2287 }
2288 JVM_END
2289 
2290 JVM_ENTRY(jint, JVM_ConstantPoolGetNameAndTypeRefIndexAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2291 {
2292   JvmtiVMObjectAllocEventCollector oam;
2293   constantPoolHandle cp(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2294   bounds_check(cp, index, CHECK_0);
2295   constantTag tag = cp->tag_at(index);
2296   if (!tag.is_invoke_dynamic() && !tag.is_field_or_method()) {
2297     THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2298   }
2299   return (jint) cp->uncached_name_and_type_ref_index_at(index);
2300 }
2301 JVM_END
2302 
2303 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetNameAndTypeRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2304 {
2305   JvmtiVMObjectAllocEventCollector oam;
2306   constantPoolHandle cp(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2307   bounds_check(cp, index, CHECK_NULL);
2308   constantTag tag = cp->tag_at(index);
2309   if (!tag.is_name_and_type()) {
2310     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2311   }
2312   Symbol* member_name = cp->symbol_at(cp->name_ref_index_at(index));
2313   Symbol* member_sig = cp->symbol_at(cp->signature_ref_index_at(index));
2314   objArrayOop dest_o = oopFactory::new_objArray(vmClasses::String_klass(), 2, CHECK_NULL);
2315   objArrayHandle dest(THREAD, dest_o);
2316   Handle str = java_lang_String::create_from_symbol(member_name, CHECK_NULL);
2317   dest->obj_at_put(0, str());
2318   str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL);
2319   dest->obj_at_put(1, str());
2320   return (jobjectArray) JNIHandles::make_local(THREAD, dest());
2321 }
2322 JVM_END
2323 
2324 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2325 {
2326   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2327   bounds_check(cp, index, CHECK_0);
2328   constantTag tag = cp->tag_at(index);
2329   if (!tag.is_int()) {
2330     THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2331   }
2332   return cp->int_at(index);
2333 }
2334 JVM_END
2335 
2336 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2337 {
2338   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2339   bounds_check(cp, index, CHECK_(0L));
2340   constantTag tag = cp->tag_at(index);
2341   if (!tag.is_long()) {
2342     THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2343   }
2344   return cp->long_at(index);
2345 }
2346 JVM_END
2347 
2348 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2349 {
2350   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2351   bounds_check(cp, index, CHECK_(0.0f));
2352   constantTag tag = cp->tag_at(index);
2353   if (!tag.is_float()) {
2354     THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2355   }
2356   return cp->float_at(index);
2357 }
2358 JVM_END
2359 
2360 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2361 {
2362   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2363   bounds_check(cp, index, CHECK_(0.0));
2364   constantTag tag = cp->tag_at(index);
2365   if (!tag.is_double()) {
2366     THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2367   }
2368   return cp->double_at(index);
2369 }
2370 JVM_END
2371 
2372 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2373 {
2374   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2375   bounds_check(cp, index, CHECK_NULL);
2376   constantTag tag = cp->tag_at(index);
2377   if (!tag.is_string()) {
2378     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2379   }
2380   oop str = cp->string_at(index, CHECK_NULL);
2381   return (jstring) JNIHandles::make_local(THREAD, str);
2382 }
2383 JVM_END
2384 
2385 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index))
2386 {
2387   JvmtiVMObjectAllocEventCollector oam;
2388   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2389   bounds_check(cp, index, CHECK_NULL);
2390   constantTag tag = cp->tag_at(index);
2391   if (!tag.is_symbol()) {
2392     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2393   }
2394   Symbol* sym = cp->symbol_at(index);
2395   Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL);
2396   return (jstring) JNIHandles::make_local(THREAD, str());
2397 }
2398 JVM_END
2399 
2400 JVM_ENTRY(jbyte, JVM_ConstantPoolGetTagAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2401 {
2402   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2403   bounds_check(cp, index, CHECK_0);
2404   constantTag tag = cp->tag_at(index);
2405   jbyte result = tag.value();
2406   // If returned tag values are not from the JVM spec, e.g. tags from 100 to 105,
2407   // they are changed to the corresponding tags from the JVM spec, so that java code in
2408   // sun.reflect.ConstantPool will return only tags from the JVM spec, not internal ones.
2409   if (tag.is_klass_or_reference()) {
2410       result = JVM_CONSTANT_Class;
2411   } else if (tag.is_string_index()) {
2412       result = JVM_CONSTANT_String;
2413   } else if (tag.is_method_type_in_error()) {
2414       result = JVM_CONSTANT_MethodType;
2415   } else if (tag.is_method_handle_in_error()) {
2416       result = JVM_CONSTANT_MethodHandle;
2417   } else if (tag.is_dynamic_constant_in_error()) {
2418       result = JVM_CONSTANT_Dynamic;
2419   }
2420   return result;
2421 }
2422 JVM_END
2423 
2424 // Assertion support. //////////////////////////////////////////////////////////
2425 
2426 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls))
2427   assert(cls != nullptr, "bad class");
2428 
2429   oop r = JNIHandles::resolve(cls);
2430   assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed");
2431   if (java_lang_Class::is_primitive(r)) return false;
2432 
2433   Klass* k = java_lang_Class::as_Klass(r);
2434   assert(k->is_instance_klass(), "must be an instance klass");
2435   if (!k->is_instance_klass()) return false;
2436 
2437   ResourceMark rm(THREAD);
2438   const char* name = k->name()->as_C_string();
2439   bool system_class = k->class_loader() == nullptr;
2440   return JavaAssertions::enabled(name, system_class);
2441 
2442 JVM_END
2443 
2444 
2445 // Return a new AssertionStatusDirectives object with the fields filled in with
2446 // command-line assertion arguments (i.e., -ea, -da).
2447 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused))
2448   JvmtiVMObjectAllocEventCollector oam;
2449   oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL);
2450   return JNIHandles::make_local(THREAD, asd);
2451 JVM_END
2452 
2453 // Verification ////////////////////////////////////////////////////////////////////////////////
2454 
2455 // Reflection for the verifier /////////////////////////////////////////////////////////////////
2456 
2457 // RedefineClasses support: bug 6214132 caused verification to fail.
2458 // All functions from this section should call the jvmtiThreadSate function:
2459 //   Klass* class_to_verify_considering_redefinition(Klass* klass).
2460 // The function returns a Klass* of the _scratch_class if the verifier
2461 // was invoked in the middle of the class redefinition.
2462 // Otherwise it returns its argument value which is the _the_class Klass*.
2463 // Please, refer to the description in the jvmtiThreadSate.hpp.
2464 
2465 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls))
2466   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2467   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2468   return k->name()->as_utf8();
2469 JVM_END
2470 
2471 
2472 JVM_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types))
2473   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2474   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2475   // types will have length zero if this is not an InstanceKlass
2476   // (length is determined by call to JVM_GetClassCPEntriesCount)
2477   if (k->is_instance_klass()) {
2478     ConstantPool* cp = InstanceKlass::cast(k)->constants();
2479     for (int index = cp->length() - 1; index >= 0; index--) {
2480       constantTag tag = cp->tag_at(index);
2481       types[index] = (tag.is_unresolved_klass()) ? (unsigned char) JVM_CONSTANT_Class : tag.value();
2482     }
2483   }
2484 JVM_END
2485 
2486 
2487 JVM_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls))
2488   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2489   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2490   return (!k->is_instance_klass()) ? 0 : InstanceKlass::cast(k)->constants()->length();
2491 JVM_END
2492 
2493 
2494 JVM_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls))
2495   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2496   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2497   return (!k->is_instance_klass()) ? 0 : InstanceKlass::cast(k)->java_fields_count();
2498 JVM_END
2499 
2500 
2501 JVM_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls))
2502   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2503   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2504   return (!k->is_instance_klass()) ? 0 : InstanceKlass::cast(k)->methods()->length();
2505 JVM_END
2506 
2507 
2508 // The following methods, used for the verifier, are never called with
2509 // array klasses, so a direct cast to InstanceKlass is safe.
2510 // Typically, these methods are called in a loop with bounds determined
2511 // by the results of JVM_GetClass{Fields,Methods}Count, which return
2512 // zero for arrays.
2513 JVM_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions))
2514   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2515   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2516   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2517   int length = method->checked_exceptions_length();
2518   if (length > 0) {
2519     CheckedExceptionElement* table= method->checked_exceptions_start();
2520     for (int i = 0; i < length; i++) {
2521       exceptions[i] = table[i].class_cp_index;
2522     }
2523   }
2524 JVM_END
2525 
2526 
2527 JVM_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index))
2528   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2529   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2530   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2531   return method->checked_exceptions_length();
2532 JVM_END
2533 
2534 
2535 JVM_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code))
2536   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2537   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2538   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2539   memcpy(code, method->code_base(), method->code_size());
2540 JVM_END
2541 
2542 
2543 JVM_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index))
2544   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2545   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2546   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2547   return method->code_size();
2548 JVM_END
2549 
2550 
2551 JVM_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry))
2552   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2553   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2554   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2555   ExceptionTable extable(method);
2556   entry->start_pc   = extable.start_pc(entry_index);
2557   entry->end_pc     = extable.end_pc(entry_index);
2558   entry->handler_pc = extable.handler_pc(entry_index);
2559   entry->catchType  = extable.catch_type_index(entry_index);
2560 JVM_END
2561 
2562 
2563 JVM_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index))
2564   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2565   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2566   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2567   return method->exception_table_length();
2568 JVM_END
2569 
2570 
2571 JVM_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index))
2572   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2573   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2574   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2575   return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
2576 JVM_END
2577 
2578 
2579 JVM_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index))
2580   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2581   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2582   return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS;
2583 JVM_END
2584 
2585 
2586 JVM_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index))
2587   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2588   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2589   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2590   return method->max_locals();
2591 JVM_END
2592 
2593 
2594 JVM_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index))
2595   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2596   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2597   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2598   return method->size_of_parameters();
2599 JVM_END
2600 
2601 
2602 JVM_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index))
2603   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2604   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2605   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2606   return method->verifier_max_stack();
2607 JVM_END
2608 
2609 
2610 JVM_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index))
2611   ResourceMark rm(THREAD);
2612   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2613   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2614   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2615   return method->name() == vmSymbols::object_initializer_name();
2616 JVM_END
2617 
2618 
2619 JVM_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index))
2620   ResourceMark rm(THREAD);
2621   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2622   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2623   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2624   return method->is_overpass();
2625 JVM_END
2626 
2627 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index))
2628   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2629   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2630   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2631   return method->name()->as_utf8();
2632 JVM_END
2633 
2634 
2635 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index))
2636   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2637   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2638   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2639   return method->signature()->as_utf8();
2640 JVM_END
2641 
2642 /**
2643  * All of these JVM_GetCP-xxx methods are used by the old verifier to
2644  * read entries in the constant pool.  Since the old verifier always
2645  * works on a copy of the code, it will not see any rewriting that
2646  * may possibly occur in the middle of verification.  So it is important
2647  * that nothing it calls tries to use the cpCache instead of the raw
2648  * constant pool, so we must use cp->uncached_x methods when appropriate.
2649  */
2650 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index))
2651   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2652   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2653   ConstantPool* cp = InstanceKlass::cast(k)->constants();
2654   switch (cp->tag_at(cp_index).value()) {
2655     case JVM_CONSTANT_Fieldref:
2656       return cp->uncached_name_ref_at(cp_index)->as_utf8();
2657     default:
2658       fatal("JVM_GetCPFieldNameUTF: illegal constant");
2659   }
2660   ShouldNotReachHere();
2661   return nullptr;
2662 JVM_END
2663 
2664 
2665 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index))
2666   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2667   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2668   ConstantPool* cp = InstanceKlass::cast(k)->constants();
2669   switch (cp->tag_at(cp_index).value()) {
2670     case JVM_CONSTANT_InterfaceMethodref:
2671     case JVM_CONSTANT_Methodref:
2672       return cp->uncached_name_ref_at(cp_index)->as_utf8();
2673     default:
2674       fatal("JVM_GetCPMethodNameUTF: illegal constant");
2675   }
2676   ShouldNotReachHere();
2677   return nullptr;
2678 JVM_END
2679 
2680 
2681 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index))
2682   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2683   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2684   ConstantPool* cp = InstanceKlass::cast(k)->constants();
2685   switch (cp->tag_at(cp_index).value()) {
2686     case JVM_CONSTANT_InterfaceMethodref:
2687     case JVM_CONSTANT_Methodref:
2688       return cp->uncached_signature_ref_at(cp_index)->as_utf8();
2689     default:
2690       fatal("JVM_GetCPMethodSignatureUTF: illegal constant");
2691   }
2692   ShouldNotReachHere();
2693   return nullptr;
2694 JVM_END
2695 
2696 
2697 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index))
2698   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2699   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2700   ConstantPool* cp = InstanceKlass::cast(k)->constants();
2701   switch (cp->tag_at(cp_index).value()) {
2702     case JVM_CONSTANT_Fieldref:
2703       return cp->uncached_signature_ref_at(cp_index)->as_utf8();
2704     default:
2705       fatal("JVM_GetCPFieldSignatureUTF: illegal constant");
2706   }
2707   ShouldNotReachHere();
2708   return nullptr;
2709 JVM_END
2710 
2711 
2712 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index))
2713   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2714   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2715   ConstantPool* cp = InstanceKlass::cast(k)->constants();
2716   Symbol* classname = cp->klass_name_at(cp_index);
2717   return classname->as_utf8();
2718 JVM_END
2719 
2720 
2721 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index))
2722   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2723   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2724   ConstantPool* cp = InstanceKlass::cast(k)->constants();
2725   switch (cp->tag_at(cp_index).value()) {
2726     case JVM_CONSTANT_Fieldref: {
2727       int class_index = cp->uncached_klass_ref_index_at(cp_index);
2728       Symbol* classname = cp->klass_name_at(class_index);
2729       return classname->as_utf8();
2730     }
2731     default:
2732       fatal("JVM_GetCPFieldClassNameUTF: illegal constant");
2733   }
2734   ShouldNotReachHere();
2735   return nullptr;
2736 JVM_END
2737 
2738 
2739 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index))
2740   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2741   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2742   ConstantPool* cp = InstanceKlass::cast(k)->constants();
2743   switch (cp->tag_at(cp_index).value()) {
2744     case JVM_CONSTANT_Methodref:
2745     case JVM_CONSTANT_InterfaceMethodref: {
2746       int class_index = cp->uncached_klass_ref_index_at(cp_index);
2747       Symbol* classname = cp->klass_name_at(class_index);
2748       return classname->as_utf8();
2749     }
2750     default:
2751       fatal("JVM_GetCPMethodClassNameUTF: illegal constant");
2752   }
2753   ShouldNotReachHere();
2754   return nullptr;
2755 JVM_END
2756 
2757 
2758 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls))
2759   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2760   Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls));
2761   k        = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2762   k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread);
2763   ConstantPool* cp = InstanceKlass::cast(k)->constants();
2764   ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants();
2765   switch (cp->tag_at(cp_index).value()) {
2766     case JVM_CONSTANT_Fieldref: {
2767       Symbol* name      = cp->uncached_name_ref_at(cp_index);
2768       Symbol* signature = cp->uncached_signature_ref_at(cp_index);
2769       InstanceKlass* ik = InstanceKlass::cast(k_called);
2770       for (JavaFieldStream fs(ik); !fs.done(); fs.next()) {
2771         if (fs.name() == name && fs.signature() == signature) {
2772           return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS;
2773         }
2774       }
2775       return -1;
2776     }
2777     default:
2778       fatal("JVM_GetCPFieldModifiers: illegal constant");
2779   }
2780   ShouldNotReachHere();
2781   return 0;
2782 JVM_END
2783 
2784 
2785 JVM_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls))
2786   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2787   Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls));
2788   k        = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2789   k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread);
2790   ConstantPool* cp = InstanceKlass::cast(k)->constants();
2791   switch (cp->tag_at(cp_index).value()) {
2792     case JVM_CONSTANT_Methodref:
2793     case JVM_CONSTANT_InterfaceMethodref: {
2794       Symbol* name      = cp->uncached_name_ref_at(cp_index);
2795       Symbol* signature = cp->uncached_signature_ref_at(cp_index);
2796       Array<Method*>* methods = InstanceKlass::cast(k_called)->methods();
2797       int methods_count = methods->length();
2798       for (int i = 0; i < methods_count; i++) {
2799         Method* method = methods->at(i);
2800         if (method->name() == name && method->signature() == signature) {
2801             return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
2802         }
2803       }
2804       return -1;
2805     }
2806     default:
2807       fatal("JVM_GetCPMethodModifiers: illegal constant");
2808   }
2809   ShouldNotReachHere();
2810   return 0;
2811 JVM_END
2812 
2813 
2814 // Misc //////////////////////////////////////////////////////////////////////////////////////////////
2815 
2816 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf))
2817   // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything
2818 JVM_END
2819 
2820 
2821 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2))
2822   oop class1_mirror = JNIHandles::resolve_non_null(class1);
2823   oop class2_mirror = JNIHandles::resolve_non_null(class2);
2824   Klass* klass1 = java_lang_Class::as_Klass(class1_mirror);
2825   Klass* klass2 = java_lang_Class::as_Klass(class2_mirror);
2826   return (jboolean) Reflection::is_same_class_package(klass1, klass2);
2827 JVM_END
2828 
2829 // Printing support //////////////////////////////////////////////////
2830 extern "C" {
2831 
2832 ATTRIBUTE_PRINTF(3, 0)
2833 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) {
2834   // Reject count values that are negative signed values converted to
2835   // unsigned; see bug 4399518, 4417214
2836   if ((intptr_t)count <= 0) return -1;
2837 
2838   int result = os::vsnprintf(str, count, fmt, args);
2839   if (result > 0 && (size_t)result >= count) {
2840     result = -1;
2841   }

2900 // In most of the JVM thread support functions we need to access the
2901 // thread through a ThreadsListHandle to prevent it from exiting and
2902 // being reclaimed while we try to operate on it. The exceptions to this
2903 // rule are when operating on the current thread, or if the monitor of
2904 // the target java.lang.Thread is locked at the Java level - in both
2905 // cases the target cannot exit.
2906 
2907 static void thread_entry(JavaThread* thread, TRAPS) {
2908   HandleMark hm(THREAD);
2909   Handle obj(THREAD, thread->threadObj());
2910   JavaValue result(T_VOID);
2911   JavaCalls::call_virtual(&result,
2912                           obj,
2913                           vmClasses::Thread_klass(),
2914                           vmSymbols::run_method_name(),
2915                           vmSymbols::void_method_signature(),
2916                           THREAD);
2917 }
2918 
2919 
2920 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread))
2921 #if INCLUDE_CDS
2922   if (CDSConfig::is_dumping_static_archive()) {
2923     // During java -Xshare:dump, if we allow multiple Java threads to
2924     // execute in parallel, symbols and classes may be loaded in
2925     // random orders which will make the resulting CDS archive
2926     // non-deterministic.
2927     //
2928     // Lucikly, during java -Xshare:dump, it's important to run only
2929     // the code in the main Java thread (which is NOT started here) that
2930     // creates the module graph, etc. It's safe to not start the other
2931     // threads which are launched by class static initializers
2932     // (ReferenceHandler, FinalizerThread and CleanerImpl).
2933     if (log_is_enabled(Info, cds)) {
2934       ResourceMark rm;
2935       oop t = JNIHandles::resolve_non_null(jthread);
2936       log_info(cds)("JVM_StartThread() ignored: %s", t->klass()->external_name());
2937     }
2938     return;
2939   }
2940 #endif
2941   JavaThread *native_thread = nullptr;
2942 

2996     log_warning(os, thread)("Failed to start the native thread for java.lang.Thread \"%s\"",
2997                             JavaThread::name_for(JNIHandles::resolve_non_null(jthread)));
2998     // No one should hold a reference to the 'native_thread'.
2999     native_thread->smr_delete();
3000     if (JvmtiExport::should_post_resource_exhausted()) {
3001       JvmtiExport::post_resource_exhausted(
3002         JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS,
3003         os::native_thread_creation_failed_msg());
3004     }
3005     THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(),
3006               os::native_thread_creation_failed_msg());
3007   }
3008 
3009   JFR_ONLY(Jfr::on_java_thread_start(thread, native_thread);)
3010 
3011   Thread::start(native_thread);
3012 
3013 JVM_END
3014 
3015 
3016 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio))
3017   ThreadsListHandle tlh(thread);
3018   oop java_thread = nullptr;
3019   JavaThread* receiver = nullptr;
3020   bool is_alive = tlh.cv_internal_thread_to_JavaThread(jthread, &receiver, &java_thread);
3021   java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio);
3022 
3023   if (is_alive) {
3024     // jthread refers to a live JavaThread.
3025     Thread::set_priority(receiver, (ThreadPriority)prio);
3026   }
3027   // Implied else: If the JavaThread hasn't started yet, then the
3028   // priority set in the java.lang.Thread object above will be pushed
3029   // down when it does start.
3030 JVM_END
3031 
3032 
3033 JVM_LEAF(void, JVM_Yield(JNIEnv *env, jclass threadClass))
3034   if (os::dont_yield()) return;
3035   HOTSPOT_THREAD_YIELD();
3036   os::naked_yield();
3037 JVM_END
3038 
3039 JVM_ENTRY(void, JVM_SleepNanos(JNIEnv* env, jclass threadClass, jlong nanos))
3040   if (nanos < 0) {
3041     THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "nanosecond timeout value out of range");
3042   }
3043 
3044   if (thread->is_interrupted(true) && !HAS_PENDING_EXCEPTION) {
3045     THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted");
3046   }
3047 
3048   // Save current thread state and restore it at the end of this block.
3049   // And set new thread state to SLEEPING.
3050   JavaThreadSleepState jtss(thread);
3051 
3052   HOTSPOT_THREAD_SLEEP_BEGIN(nanos / NANOSECS_PER_MILLISEC);
3053 
3054   if (nanos == 0) {
3055     os::naked_yield();
3056   } else {
3057     ThreadState old_state = thread->osthread()->get_state();
3058     thread->osthread()->set_state(SLEEPING);
3059     if (!thread->sleep_nanos(nanos)) { // interrupted
3060       // An asynchronous exception could have been thrown on
3061       // us while we were sleeping. We do not overwrite those.
3062       if (!HAS_PENDING_EXCEPTION) {
3063         HOTSPOT_THREAD_SLEEP_END(1);
3064 
3065         // TODO-FIXME: THROW_MSG returns which means we will not call set_state()
3066         // to properly restore the thread state.  That's likely wrong.
3067         THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted");
3068       }
3069     }
3070     thread->osthread()->set_state(old_state);
3071   }
3072   HOTSPOT_THREAD_SLEEP_END(0);
3073 JVM_END
3074 
3075 JVM_ENTRY(jobject, JVM_CurrentCarrierThread(JNIEnv* env, jclass threadClass))
3076   oop jthread = thread->threadObj();
3077   assert(jthread != nullptr, "no current carrier thread!");
3078   return JNIHandles::make_local(THREAD, jthread);
3079 JVM_END
3080 
3081 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass))
3082   oop theThread = thread->vthread();
3083   assert(theThread != (oop)nullptr, "no current thread!");
3084   return JNIHandles::make_local(THREAD, theThread);
3085 JVM_END
3086 
3087 JVM_ENTRY(void, JVM_SetCurrentThread(JNIEnv* env, jobject thisThread,
3088                                      jobject theThread))
3089   oop threadObj = JNIHandles::resolve(theThread);
3090   thread->set_vthread(threadObj);
3091   JFR_ONLY(Jfr::on_set_current_thread(thread, threadObj);)
3092 JVM_END
3093 
3094 JVM_ENTRY(jlong, JVM_GetNextThreadIdOffset(JNIEnv* env, jclass threadClass))
3095   return ThreadIdentifier::unsafe_offset();
3096 JVM_END
3097 
3098 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread))
3099   ThreadsListHandle tlh(thread);
3100   JavaThread* receiver = nullptr;
3101   bool is_alive = tlh.cv_internal_thread_to_JavaThread(jthread, &receiver, nullptr);
3102   if (is_alive) {
3103     // jthread refers to a live JavaThread.
3104     receiver->interrupt();
3105   }
3106 JVM_END
3107 
3108 // Return true iff the current thread has locked the object passed in
3109 
3110 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj))
3111   if (obj == nullptr) {
3112     THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE);
3113   }
3114   Handle h_obj(THREAD, JNIHandles::resolve(obj));
3115   return ObjectSynchronizer::current_thread_holds_lock(thread, h_obj);
3116 JVM_END
3117 
3118 JVM_ENTRY(jobject, JVM_GetStackTrace(JNIEnv *env, jobject jthread))
3119   oop trace = java_lang_Thread::async_get_stack_trace(JNIHandles::resolve(jthread), THREAD);
3120   return JNIHandles::make_local(THREAD, trace);
3121 JVM_END
3122 
3123 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name))

3124   // We don't use a ThreadsListHandle here because the current thread
3125   // must be alive.
3126   oop java_thread = JNIHandles::resolve_non_null(jthread);
3127   JavaThread* thr = java_lang_Thread::thread(java_thread);
3128   if (thread == thr && !thr->has_attached_via_jni()) {
3129     // Thread naming is only supported for the current thread and
3130     // we don't set the name of an attached thread to avoid stepping
3131     // on other programs.
3132     ResourceMark rm(thread);
3133     const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
3134     os::set_native_thread_name(thread_name);
3135   }
3136 JVM_END
3137 
3138 JVM_ENTRY(jobject, JVM_ScopedValueCache(JNIEnv* env, jclass threadClass))
3139   oop theCache = thread->scopedValueCache();
3140   return JNIHandles::make_local(THREAD, theCache);
3141 JVM_END
3142 
3143 JVM_ENTRY(void, JVM_SetScopedValueCache(JNIEnv* env, jclass threadClass,
3144                                        jobject theCache))
3145   arrayOop objs = arrayOop(JNIHandles::resolve(theCache));
3146   thread->set_scopedValueCache(objs);
3147 JVM_END
3148 
3149 // java.lang.SecurityManager ///////////////////////////////////////////////////////////////////////
3150 
3151 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env))
3152   ResourceMark rm(THREAD);
3153   JvmtiVMObjectAllocEventCollector oam;
3154   vframeStream vfst(thread);
3155 
3156   if (vmClasses::reflect_CallerSensitive_klass() != nullptr) {
3157     // This must only be called from SecurityManager.getClassContext
3158     Method* m = vfst.method();
3159     if (!(m->method_holder() == vmClasses::SecurityManager_klass() &&
3160           m->name()          == vmSymbols::getClassContext_name() &&
3161           m->signature()     == vmSymbols::void_class_array_signature())) {
3162       THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext");
3163     }
3164   }
3165 
3166   // Collect method holders
3167   GrowableArray<Klass*>* klass_array = new GrowableArray<Klass*>();
3168   for (; !vfst.at_end(); vfst.security_next()) {
3169     Method* m = vfst.method();
3170     // Native frames are not returned
3171     if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) {
3172       Klass* holder = m->method_holder();
3173       assert(holder->is_klass(), "just checking");
3174       klass_array->append(holder);
3175     }
3176   }
3177 
3178   // Create result array of type [Ljava/lang/Class;
3179   objArrayOop result = oopFactory::new_objArray(vmClasses::Class_klass(), klass_array->length(), CHECK_NULL);
3180   // Fill in mirrors corresponding to method holders
3181   for (int i = 0; i < klass_array->length(); i++) {
3182     result->obj_at_put(i, klass_array->at(i)->java_mirror());
3183   }
3184 
3185   return (jobjectArray) JNIHandles::make_local(THREAD, result);
3186 JVM_END
3187 
3188 
3189 // java.lang.Package ////////////////////////////////////////////////////////////////
3190 
3191 
3192 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name))
3193   ResourceMark rm(THREAD);
3194   JvmtiVMObjectAllocEventCollector oam;
3195   char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
3196   oop result = ClassLoader::get_system_package(str, CHECK_NULL);
3197 return (jstring) JNIHandles::make_local(THREAD, result);
3198 JVM_END
3199 
3200 
3201 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env))
3202   JvmtiVMObjectAllocEventCollector oam;
3203   objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL);
3204   return (jobjectArray) JNIHandles::make_local(THREAD, result);
3205 JVM_END
3206 
3207 
3208 // java.lang.ref.Reference ///////////////////////////////////////////////////////////////
3209 
3210 
3211 JVM_ENTRY(jobject, JVM_GetAndClearReferencePendingList(JNIEnv* env))
3212   MonitorLocker ml(Heap_lock);
3213   oop ref = Universe::reference_pending_list();
3214   if (ref != nullptr) {
3215     Universe::clear_reference_pending_list();
3216   }
3217   return JNIHandles::make_local(THREAD, ref);
3218 JVM_END
3219 
3220 JVM_ENTRY(jboolean, JVM_HasReferencePendingList(JNIEnv* env))
3221   MonitorLocker ml(Heap_lock);
3222   return Universe::has_reference_pending_list();
3223 JVM_END
3224 
3225 JVM_ENTRY(void, JVM_WaitForReferencePendingList(JNIEnv* env))
3226   MonitorLocker ml(Heap_lock);
3227   while (!Universe::has_reference_pending_list()) {
3228     ml.wait();
3229   }
3230 JVM_END
3231 
3232 JVM_ENTRY(jboolean, JVM_ReferenceRefersTo(JNIEnv* env, jobject ref, jobject o))
3233   oop ref_oop = JNIHandles::resolve_non_null(ref);
3234   // PhantomReference has it's own implementation of refersTo().
3235   // See: JVM_PhantomReferenceRefersTo
3236   assert(!java_lang_ref_Reference::is_phantom(ref_oop), "precondition");
3237   oop referent = java_lang_ref_Reference::weak_referent_no_keepalive(ref_oop);
3238   return referent == JNIHandles::resolve(o);
3239 JVM_END
3240 
3241 JVM_ENTRY(void, JVM_ReferenceClear(JNIEnv* env, jobject ref))
3242   oop ref_oop = JNIHandles::resolve_non_null(ref);
3243   // FinalReference has it's own implementation of clear().
3244   assert(!java_lang_ref_Reference::is_final(ref_oop), "precondition");
3245   if (java_lang_ref_Reference::unknown_referent_no_keepalive(ref_oop) == nullptr) {
3246     // If the referent has already been cleared then done.
3247     // However, if the referent is dead but has not yet been cleared by
3248     // concurrent reference processing, it should NOT be cleared here.
3249     // Instead, clearing should be left to the GC.  Clearing it here could
3250     // detectably lose an expected notification, which is impossible with
3251     // STW reference processing.  The clearing in enqueue() doesn't have
3252     // this problem, since the enqueue covers the notification, but it's not
3253     // worth the effort to handle that case specially.
3254     return;
3255   }
3256   java_lang_ref_Reference::clear_referent(ref_oop);
3257 JVM_END
3258 
3259 
3260 // java.lang.ref.PhantomReference //////////////////////////////////////////////////
3261 
3262 
3263 JVM_ENTRY(jboolean, JVM_PhantomReferenceRefersTo(JNIEnv* env, jobject ref, jobject o))
3264   oop ref_oop = JNIHandles::resolve_non_null(ref);
3265   oop referent = java_lang_ref_Reference::phantom_referent_no_keepalive(ref_oop);
3266   return referent == JNIHandles::resolve(o);
3267 JVM_END
3268 
3269 
3270 // ObjectInputStream ///////////////////////////////////////////////////////////////
3271 
3272 // Return the first user-defined class loader up the execution stack, or null
3273 // if only code from the bootstrap or platform class loader is on the stack.
3274 
3275 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env))
3276   for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) {
3277     InstanceKlass* ik = vfst.method()->method_holder();
3278     oop loader = ik->class_loader();
3279     if (loader != nullptr && !SystemDictionary::is_platform_class_loader(loader)) {
3280       // Skip reflection related frames
3281       if (!ik->is_subclass_of(vmClasses::reflect_SerializationConstructorAccessorImpl_klass())) {
3282         return JNIHandles::make_local(THREAD, loader);
3283       }
3284     }
3285   }
3286   return nullptr;
3287 JVM_END
3288 
3289 
3290 // Array ///////////////////////////////////////////////////////////////////////////////////////////
3291 
3292 
3293 // resolve array handle and check arguments
3294 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) {
3295   if (arr == nullptr) {
3296     THROW_NULL(vmSymbols::java_lang_NullPointerException());
3297   }
3298   oop a = JNIHandles::resolve_non_null(arr);
3299   if (!a->is_array()) {
3300     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array");
3301   } else if (type_array_only && !a->is_typeArray()) {
3302     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array of primitive type");
3303   }
3304   return arrayOop(a);
3305 }
3306 
3307 
3308 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr))
3309   arrayOop a = check_array(env, arr, false, CHECK_0);
3310   return a->length();
3311 JVM_END
3312 
3313 
3314 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index))
3315   JvmtiVMObjectAllocEventCollector oam;
3316   arrayOop a = check_array(env, arr, false, CHECK_NULL);
3317   jvalue value;
3318   BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL);
3319   oop box = Reflection::box(&value, type, CHECK_NULL);
3320   return JNIHandles::make_local(THREAD, box);
3321 JVM_END
3322 
3323 
3324 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode))
3325   jvalue value;
3326   value.i = 0; // to initialize value before getting used in CHECK
3327   arrayOop a = check_array(env, arr, true, CHECK_(value));
3328   assert(a->is_typeArray(), "just checking");
3329   BasicType type = Reflection::array_get(&value, a, index, CHECK_(value));
3330   BasicType wide_type = (BasicType) wCode;
3331   if (type != wide_type) {
3332     Reflection::widen(&value, type, wide_type, CHECK_(value));
3333   }
3334   return value;
3335 JVM_END
3336 
3337 
3338 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val))
3339   arrayOop a = check_array(env, arr, false, CHECK);
3340   oop box = JNIHandles::resolve(val);
3341   jvalue value;
3342   value.i = 0; // to initialize value before getting used in CHECK
3343   BasicType value_type;
3344   if (a->is_objArray()) {
3345     // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array
3346     value_type = Reflection::unbox_for_regular_object(box, &value);
3347   } else {
3348     value_type = Reflection::unbox_for_primitive(box, &value, CHECK);
3349   }
3350   Reflection::array_set(&value, a, index, value_type, CHECK);
3351 JVM_END
3352 
3353 
3354 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode))
3355   arrayOop a = check_array(env, arr, true, CHECK);
3356   assert(a->is_typeArray(), "just checking");
3357   BasicType value_type = (BasicType) vCode;
3358   Reflection::array_set(&v, a, index, value_type, CHECK);
3359 JVM_END
3360 
3361 
3362 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length))
3363   JvmtiVMObjectAllocEventCollector oam;
3364   oop element_mirror = JNIHandles::resolve(eltClass);
3365   oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL);
3366   return JNIHandles::make_local(THREAD, result);
3367 JVM_END
3368 
3369 
3370 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim))
3371   JvmtiVMObjectAllocEventCollector oam;
3372   arrayOop dim_array = check_array(env, dim, true, CHECK_NULL);
3373   oop element_mirror = JNIHandles::resolve(eltClass);
3374   assert(dim_array->is_typeArray(), "just checking");
3375   oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL);
3376   return JNIHandles::make_local(THREAD, result);
3377 JVM_END
3378 
3379 
3380 // Library support ///////////////////////////////////////////////////////////////////////////
3381 
3382 JVM_LEAF(void*, JVM_LoadZipLibrary())
3383   return ZipLibrary::handle();
3384 JVM_END
3385 
3386 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name, jboolean throwException))
3387   //%note jvm_ct
3388   char ebuf[1024];
3389   void *load_result;
3390   {
3391     ThreadToNativeFromVM ttnfvm(thread);
3392     load_result = os::dll_load(name, ebuf, sizeof ebuf);
3393   }
3394   if (load_result == nullptr) {
3395     if (throwException) {
3396       char msg[1024];
3397       jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf);
3398       // Since 'ebuf' may contain a string encoded using
3399       // platform encoding scheme, we need to pass
3400       // Exceptions::unsafe_to_utf8 to the new_exception method
3401       // as the last argument. See bug 6367357.
3402       Handle h_exception =
3403         Exceptions::new_exception(thread,
3404                                   vmSymbols::java_lang_UnsatisfiedLinkError(),
3405                                   msg, Exceptions::unsafe_to_utf8);
3406 
3407       THROW_HANDLE_NULL(h_exception);
3408     } else {
3409       log_info(library)("Failed to load library %s", name);
3410       return load_result;
3411     }
3412   }
3413   log_info(library)("Loaded library %s, handle " INTPTR_FORMAT, name, p2i(load_result));
3414   return load_result;
3415 JVM_END
3416 
3417 
3418 JVM_LEAF(void, JVM_UnloadLibrary(void* handle))
3419   os::dll_unload(handle);
3420   log_info(library)("Unloaded library with handle " INTPTR_FORMAT, p2i(handle));
3421 JVM_END
3422 
3423 
3424 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name))
3425   void* find_result = os::dll_lookup(handle, name);
3426   log_info(library)("%s %s in library with handle " INTPTR_FORMAT,
3427                     find_result != nullptr ? "Found" : "Failed to find",
3428                     name, p2i(handle));
3429   return find_result;
3430 JVM_END
3431 
3432 
3433 // JNI version ///////////////////////////////////////////////////////////////////////////////
3434 
3435 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version))
3436   return Threads::is_supported_jni_version_including_1_1(version);
3437 JVM_END
3438 
3439 
3440 JVM_LEAF(jboolean, JVM_IsPreviewEnabled(void))
3441   return Arguments::enable_preview() ? JNI_TRUE : JNI_FALSE;
3442 JVM_END
3443 
3444 JVM_LEAF(jboolean, JVM_IsContinuationsSupported(void))
3445   return VMContinuations ? JNI_TRUE : JNI_FALSE;
3446 JVM_END
3447 
3448 JVM_LEAF(jboolean, JVM_IsForeignLinkerSupported(void))
3449   return ForeignGlobals::is_foreign_linker_supported() ? JNI_TRUE : JNI_FALSE;
3450 JVM_END
3451 
3452 JVM_ENTRY_NO_ENV(jboolean, JVM_IsStaticallyLinked(void))
3453   return is_vm_statically_linked() ? JNI_TRUE : JNI_FALSE;
3454 JVM_END
3455 
3456 // String support ///////////////////////////////////////////////////////////////////////////
3457 
3458 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str))
3459   JvmtiVMObjectAllocEventCollector oam;
3460   if (str == nullptr) return nullptr;
3461   oop string = JNIHandles::resolve_non_null(str);
3462   oop result = StringTable::intern(string, CHECK_NULL);
3463   return (jstring) JNIHandles::make_local(THREAD, result);
3464 JVM_END
3465 
3466 
3467 // VM Raw monitor support //////////////////////////////////////////////////////////////////////
3468 
3469 // VM Raw monitors (not to be confused with JvmtiRawMonitors) are a simple mutual exclusion
3470 // lock (not actually monitors: no wait/notify) that is exported by the VM for use by JDK
3471 // library code. They may be used by JavaThreads and non-JavaThreads and do not participate
3472 // in the safepoint protocol, thread suspension, thread interruption, or anything of that
3473 // nature. JavaThreads will be "in native" when using this API from JDK code.
3474 
3475 
3476 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) {
3477   VM_Exit::block_if_vm_exited();
3478   return new PlatformMutex();

3504                                     Handle loader, Handle protection_domain,
3505                                     jboolean throwError, TRAPS) {
3506   // Security Note:
3507   //   The Java level wrapper will perform the necessary security check allowing
3508   //   us to pass the null as the initiating class loader.  The VM is responsible for
3509   //   the checkPackageAccess relative to the initiating class loader via the
3510   //   protection_domain. The protection_domain is passed as null by the java code
3511   //   if there is no security manager in 3-arg Class.forName().
3512   Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL);
3513 
3514   // Check if we should initialize the class
3515   if (init && klass->is_instance_klass()) {
3516     klass->initialize(CHECK_NULL);
3517   }
3518   return (jclass) JNIHandles::make_local(THREAD, klass->java_mirror());
3519 }
3520 
3521 
3522 // Method ///////////////////////////////////////////////////////////////////////////////////////////
3523 
3524 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0))
3525   Handle method_handle;
3526   if (thread->stack_overflow_state()->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) {
3527     method_handle = Handle(THREAD, JNIHandles::resolve(method));
3528     Handle receiver(THREAD, JNIHandles::resolve(obj));
3529     objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0)));
3530     oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL);
3531     jobject res = JNIHandles::make_local(THREAD, result);
3532     if (JvmtiExport::should_post_vm_object_alloc()) {
3533       oop ret_type = java_lang_reflect_Method::return_type(method_handle());
3534       assert(ret_type != nullptr, "sanity check: ret_type oop must not be null!");
3535       if (java_lang_Class::is_primitive(ret_type)) {
3536         // Only for primitive type vm allocates memory for java object.
3537         // See box() method.
3538         JvmtiExport::post_vm_object_alloc(thread, result);
3539       }
3540     }
3541     return res;
3542   } else {
3543     THROW_NULL(vmSymbols::java_lang_StackOverflowError());
3544   }
3545 JVM_END
3546 
3547 
3548 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0))
3549   oop constructor_mirror = JNIHandles::resolve(c);
3550   objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0)));
3551   oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL);
3552   jobject res = JNIHandles::make_local(THREAD, result);
3553   if (JvmtiExport::should_post_vm_object_alloc()) {
3554     JvmtiExport::post_vm_object_alloc(thread, result);
3555   }
3556   return res;
3557 JVM_END
3558 
3559 JVM_ENTRY(void, JVM_InitializeFromArchive(JNIEnv* env, jclass cls))
3560   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls));
3561   assert(k->is_klass(), "just checking");
3562   HeapShared::initialize_from_archived_subgraph(THREAD, k);
3563 JVM_END
3564 
3565 JVM_ENTRY(void, JVM_RegisterLambdaProxyClassForArchiving(JNIEnv* env,
3566                                               jclass caller,
3567                                               jstring interfaceMethodName,
3568                                               jobject factoryType,
3569                                               jobject interfaceMethodType,
3570                                               jobject implementationMember,
3571                                               jobject dynamicMethodType,
3572                                               jclass lambdaProxyClass))
3573 #if INCLUDE_CDS
3574   if (!CDSConfig::is_dumping_archive()) {
3575     return;
3576   }
3577 
3578   Klass* caller_k = java_lang_Class::as_Klass(JNIHandles::resolve(caller));
3579   InstanceKlass* caller_ik = InstanceKlass::cast(caller_k);
3580   if (caller_ik->is_hidden()) {
3581     // Hidden classes not of type lambda proxy classes are currently not being archived.
3582     // If the caller_ik is of one of the above types, the corresponding lambda proxy class won't be
3583     // registered for archiving.
3584     return;
3585   }

3593     interface_method_name = java_lang_String::as_symbol(JNIHandles::resolve_non_null(interfaceMethodName));
3594   }
3595   Handle factory_type_oop(THREAD, JNIHandles::resolve_non_null(factoryType));
3596   Symbol* factory_type = java_lang_invoke_MethodType::as_signature(factory_type_oop(), true);
3597 
3598   Handle interface_method_type_oop(THREAD, JNIHandles::resolve_non_null(interfaceMethodType));
3599   Symbol* interface_method_type = java_lang_invoke_MethodType::as_signature(interface_method_type_oop(), true);
3600 
3601   Handle implementation_member_oop(THREAD, JNIHandles::resolve_non_null(implementationMember));
3602   assert(java_lang_invoke_MemberName::is_method(implementation_member_oop()), "must be");
3603   Method* m = java_lang_invoke_MemberName::vmtarget(implementation_member_oop());
3604 
3605   Handle dynamic_method_type_oop(THREAD, JNIHandles::resolve_non_null(dynamicMethodType));
3606   Symbol* dynamic_method_type = java_lang_invoke_MethodType::as_signature(dynamic_method_type_oop(), true);
3607 
3608   SystemDictionaryShared::add_lambda_proxy_class(caller_ik, lambda_ik, interface_method_name, factory_type,
3609                                                  interface_method_type, m, dynamic_method_type, THREAD);
3610 #endif // INCLUDE_CDS
3611 JVM_END
3612 
3613 JVM_ENTRY(jclass, JVM_LookupLambdaProxyClassFromArchive(JNIEnv* env,
3614                                                         jclass caller,
3615                                                         jstring interfaceMethodName,
3616                                                         jobject factoryType,
3617                                                         jobject interfaceMethodType,
3618                                                         jobject implementationMember,
3619                                                         jobject dynamicMethodType))
3620 #if INCLUDE_CDS
3621 
3622   if (interfaceMethodName == nullptr || factoryType == nullptr || interfaceMethodType == nullptr ||
3623       implementationMember == nullptr || dynamicMethodType == nullptr) {
3624     THROW_(vmSymbols::java_lang_NullPointerException(), nullptr);
3625   }
3626 
3627   Klass* caller_k = java_lang_Class::as_Klass(JNIHandles::resolve(caller));
3628   InstanceKlass* caller_ik = InstanceKlass::cast(caller_k);
3629   if (!caller_ik->is_shared()) {
3630     // there won't be a shared lambda class if the caller_ik is not in the shared archive.
3631     return nullptr;
3632   }
3633 

3641   Handle implementation_member_oop(THREAD, JNIHandles::resolve_non_null(implementationMember));
3642   assert(java_lang_invoke_MemberName::is_method(implementation_member_oop()), "must be");
3643   Method* m = java_lang_invoke_MemberName::vmtarget(implementation_member_oop());
3644 
3645   Handle dynamic_method_type_oop(THREAD, JNIHandles::resolve_non_null(dynamicMethodType));
3646   Symbol* dynamic_method_type = java_lang_invoke_MethodType::as_signature(dynamic_method_type_oop(), true);
3647 
3648   InstanceKlass* lambda_ik = SystemDictionaryShared::get_shared_lambda_proxy_class(caller_ik, interface_method_name, factory_type,
3649                                                                                    interface_method_type, m, dynamic_method_type);
3650   jclass jcls = nullptr;
3651   if (lambda_ik != nullptr) {
3652     InstanceKlass* loaded_lambda = SystemDictionaryShared::prepare_shared_lambda_proxy_class(lambda_ik, caller_ik, THREAD);
3653     jcls = loaded_lambda == nullptr ? nullptr : (jclass) JNIHandles::make_local(THREAD, loaded_lambda->java_mirror());
3654   }
3655   return jcls;
3656 #else
3657   return nullptr;
3658 #endif // INCLUDE_CDS
3659 JVM_END
3660 
3661 JVM_ENTRY_NO_ENV(jlong, JVM_GetRandomSeedForDumping())
3662   if (CDSConfig::is_dumping_static_archive()) {
3663     // We do this so that the default CDS archive can be deterministic.
3664     const char* release = VM_Version::vm_release();
3665     const char* dbg_level = VM_Version::jdk_debug_level();
3666     const char* version = VM_Version::internal_vm_info_string();
3667     jlong seed = (jlong)(java_lang_String::hash_code((const jbyte*)release, (int)strlen(release)) ^
3668                          java_lang_String::hash_code((const jbyte*)dbg_level, (int)strlen(dbg_level)) ^
3669                          java_lang_String::hash_code((const jbyte*)version, (int)strlen(version)));
3670     seed += (jlong)VM_Version::vm_major_version();
3671     seed += (jlong)VM_Version::vm_minor_version();
3672     seed += (jlong)VM_Version::vm_security_version();
3673     seed += (jlong)VM_Version::vm_patch_version();
3674     if (seed == 0) { // don't let this ever be zero.
3675       seed = 0x87654321;
3676     }
3677     log_debug(cds)("JVM_GetRandomSeedForDumping() = " JLONG_FORMAT, seed);
3678     return seed;
3679   } else {
3680     return 0;
3681   }
3682 JVM_END
3683 
3684 JVM_ENTRY_NO_ENV(jint, JVM_GetCDSConfigStatus())
3685   return CDSConfig::get_status();
3686 JVM_END
3687 
3688 JVM_ENTRY(void, JVM_LogLambdaFormInvoker(JNIEnv *env, jstring line))
3689 #if INCLUDE_CDS
3690   assert(CDSConfig::is_logging_lambda_form_invokers(), "sanity");
3691   if (line != nullptr) {
3692     ResourceMark rm(THREAD);
3693     Handle h_line (THREAD, JNIHandles::resolve_non_null(line));
3694     char* c_line = java_lang_String::as_utf8_string(h_line());
3695     if (CDSConfig::is_dumping_dynamic_archive()) {
3696       // Note: LambdaFormInvokers::append take same format which is not
3697       // same as below the print format. The line does not include LAMBDA_FORM_TAG.
3698       LambdaFormInvokers::append(os::strdup((const char*)c_line, mtInternal));
3699     }
3700     if (ClassListWriter::is_enabled()) {
3701       ClassListWriter w;
3702       w.stream()->print_cr("%s %s", ClassListParser::lambda_form_tag(), c_line);
3703     }
3704   }
3705 #endif // INCLUDE_CDS
3706 JVM_END
3707 
3708 JVM_ENTRY(void, JVM_DumpClassListToFile(JNIEnv *env, jstring listFileName))














3709 #if INCLUDE_CDS
3710   ResourceMark rm(THREAD);
3711   Handle file_handle(THREAD, JNIHandles::resolve_non_null(listFileName));
3712   char* file_name  = java_lang_String::as_utf8_string(file_handle());
3713   MetaspaceShared::dump_loaded_classes(file_name, THREAD);
3714 #endif // INCLUDE_CDS
3715 JVM_END
3716 
3717 JVM_ENTRY(void, JVM_DumpDynamicArchive(JNIEnv *env, jstring archiveName))
3718 #if INCLUDE_CDS
3719   ResourceMark rm(THREAD);
3720   Handle file_handle(THREAD, JNIHandles::resolve_non_null(archiveName));
3721   char* archive_name  = java_lang_String::as_utf8_string(file_handle());
3722   DynamicArchive::dump_for_jcmd(archive_name, CHECK);
3723 #endif // INCLUDE_CDS
3724 JVM_END
3725 
3726 // Returns an array of all live Thread objects (VM internal JavaThreads,
3727 // jvmti agent threads, and JNI attaching threads  are skipped)
3728 // See CR 6404306 regarding JNI attaching threads
3729 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy))
3730   ResourceMark rm(THREAD);
3731   ThreadsListEnumerator tle(THREAD, false, false);
3732   JvmtiVMObjectAllocEventCollector oam;
3733 
3734   int num_threads = tle.num_threads();
3735   objArrayOop r = oopFactory::new_objArray(vmClasses::Thread_klass(), num_threads, CHECK_NULL);
3736   objArrayHandle threads_ah(THREAD, r);
3737 
3738   for (int i = 0; i < num_threads; i++) {
3739     Handle h = tle.get_threadObj(i);
3740     threads_ah->obj_at_put(i, h());
3741   }
3742 
3743   return (jobjectArray) JNIHandles::make_local(THREAD, threads_ah());
3744 JVM_END
3745 
3746 
3747 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods
3748 // Return StackTraceElement[][], each element is the stack trace of a thread in
3749 // the corresponding entry in the given threads array
3750 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads))
3751   JvmtiVMObjectAllocEventCollector oam;
3752 
3753   // Check if threads is null
3754   if (threads == nullptr) {
3755     THROW_NULL(vmSymbols::java_lang_NullPointerException());
3756   }
3757 
3758   objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads));
3759   objArrayHandle ah(THREAD, a);
3760   int num_threads = ah->length();
3761   // check if threads is non-empty array
3762   if (num_threads == 0) {
3763     THROW_NULL(vmSymbols::java_lang_IllegalArgumentException());
3764   }
3765 
3766   // check if threads is not an array of objects of Thread class
3767   Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass();
3768   if (k != vmClasses::Thread_klass()) {
3769     THROW_NULL(vmSymbols::java_lang_IllegalArgumentException());
3770   }
3771 
3772   ResourceMark rm(THREAD);
3773 
3774   GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads);
3775   for (int i = 0; i < num_threads; i++) {
3776     oop thread_obj = ah->obj_at(i);
3777     instanceHandle h(THREAD, (instanceOop) thread_obj);
3778     thread_handle_array->append(h);
3779   }
3780 
3781   // The JavaThread references in thread_handle_array are validated
3782   // in VM_ThreadDump::doit().
3783   Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL);
3784   return (jobjectArray)JNIHandles::make_local(THREAD, stacktraces());
3785 
3786 JVM_END
3787 
3788 // JVM monitoring and management support
3789 JVM_LEAF(void*, JVM_GetManagement(jint version))
3790   return Management::get_jmm_interface(version);
3791 JVM_END
3792 
3793 // com.sun.tools.attach.VirtualMachine agent properties support
3794 //
3795 // Initialize the agent properties with the properties maintained in the VM
3796 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties))
3797   ResourceMark rm;
3798 
3799   Handle props(THREAD, JNIHandles::resolve_non_null(properties));
3800 
3801   PUTPROP(props, "sun.java.command", Arguments::java_command());
3802   PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags());
3803   PUTPROP(props, "sun.jvm.args", Arguments::jvm_args());
3804   return properties;
3805 JVM_END
3806 
3807 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass))
3808 {
3809   JvmtiVMObjectAllocEventCollector oam;
3810 
3811   if (ofClass == nullptr) {
3812     return nullptr;
3813   }
3814   Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass));
3815   // Special handling for primitive objects
3816   if (java_lang_Class::is_primitive(mirror())) {
3817     return nullptr;
3818   }
3819   Klass* k = java_lang_Class::as_Klass(mirror());
3820   if (!k->is_instance_klass()) {
3821     return nullptr;
3822   }
3823   InstanceKlass* ik = InstanceKlass::cast(k);
3824   int encl_method_class_idx = ik->enclosing_method_class_index();
3825   if (encl_method_class_idx == 0) {
3826     return nullptr;
3827   }

3830   Klass* enc_k = ik->constants()->klass_at(encl_method_class_idx, CHECK_NULL);
3831   dest->obj_at_put(0, enc_k->java_mirror());
3832   int encl_method_method_idx = ik->enclosing_method_method_index();
3833   if (encl_method_method_idx != 0) {
3834     Symbol* sym = ik->constants()->symbol_at(
3835                         extract_low_short_from_int(
3836                           ik->constants()->name_and_type_at(encl_method_method_idx)));
3837     Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL);
3838     dest->obj_at_put(1, str());
3839     sym = ik->constants()->symbol_at(
3840               extract_high_short_from_int(
3841                 ik->constants()->name_and_type_at(encl_method_method_idx)));
3842     str = java_lang_String::create_from_symbol(sym, CHECK_NULL);
3843     dest->obj_at_put(2, str());
3844   }
3845   return (jobjectArray) JNIHandles::make_local(THREAD, dest());
3846 }
3847 JVM_END
3848 
3849 // Returns an array of java.lang.String objects containing the input arguments to the VM.
3850 JVM_ENTRY(jobjectArray, JVM_GetVmArguments(JNIEnv *env))
3851   ResourceMark rm(THREAD);
3852 
3853   if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) {
3854     return nullptr;
3855   }
3856 
3857   char** vm_flags = Arguments::jvm_flags_array();
3858   char** vm_args = Arguments::jvm_args_array();
3859   int num_flags = Arguments::num_jvm_flags();
3860   int num_args = Arguments::num_jvm_args();
3861 
3862   InstanceKlass* ik = vmClasses::String_klass();
3863   objArrayOop r = oopFactory::new_objArray(ik, num_args + num_flags, CHECK_NULL);
3864   objArrayHandle result_h(THREAD, r);
3865 
3866   int index = 0;
3867   for (int j = 0; j < num_flags; j++, index++) {
3868     Handle h = java_lang_String::create_from_platform_dependent_str(vm_flags[j], CHECK_NULL);
3869     result_h->obj_at_put(index, h());
3870   }
3871   for (int i = 0; i < num_args; i++, index++) {
3872     Handle h = java_lang_String::create_from_platform_dependent_str(vm_args[i], CHECK_NULL);
3873     result_h->obj_at_put(index, h());
3874   }
3875   return (jobjectArray) JNIHandles::make_local(THREAD, result_h());
3876 JVM_END
3877 
3878 JVM_LEAF(jint, JVM_FindSignal(const char *name))
3879   return os::get_signal_number(name);
3880 JVM_END
3881 
3882 JVM_ENTRY(void, JVM_VirtualThreadStart(JNIEnv* env, jobject vthread))
3883 #if INCLUDE_JVMTI
3884   if (!DoJVMTIVirtualThreadTransitions) {
3885     assert(!JvmtiExport::can_support_virtual_threads(), "sanity check");
3886     return;
3887   }
3888   if (JvmtiVTMSTransitionDisabler::VTMS_notify_jvmti_events()) {
3889     JvmtiVTMSTransitionDisabler::VTMS_vthread_start(vthread);
3890   } else {
3891     // set VTMS transition bit value in JavaThread and java.lang.VirtualThread object
3892     JvmtiVTMSTransitionDisabler::set_is_in_VTMS_transition(thread, vthread, false);
3893   }
3894 #endif
3895 JVM_END
3896 
3897 JVM_ENTRY(void, JVM_VirtualThreadEnd(JNIEnv* env, jobject vthread))
3898 #if INCLUDE_JVMTI
3899   if (!DoJVMTIVirtualThreadTransitions) {
3900     assert(!JvmtiExport::can_support_virtual_threads(), "sanity check");
3901     return;
3902   }
3903   if (JvmtiVTMSTransitionDisabler::VTMS_notify_jvmti_events()) {
3904     JvmtiVTMSTransitionDisabler::VTMS_vthread_end(vthread);
3905   } else {
3906     // set VTMS transition bit value in JavaThread and java.lang.VirtualThread object
3907     JvmtiVTMSTransitionDisabler::set_is_in_VTMS_transition(thread, vthread, true);
3908   }
3909 #endif
3910 JVM_END
3911 
3912 // If notifications are disabled then just update the VTMS transition bit and return.
3913 // Otherwise, the bit is updated in the given jvmtiVTMSTransitionDisabler function call.
3914 JVM_ENTRY(void, JVM_VirtualThreadMount(JNIEnv* env, jobject vthread, jboolean hide))
3915 #if INCLUDE_JVMTI
3916   if (!DoJVMTIVirtualThreadTransitions) {
3917     assert(!JvmtiExport::can_support_virtual_threads(), "sanity check");
3918     return;
3919   }
3920   if (JvmtiVTMSTransitionDisabler::VTMS_notify_jvmti_events()) {
3921     JvmtiVTMSTransitionDisabler::VTMS_vthread_mount(vthread, hide);
3922   } else {
3923     // set VTMS transition bit value in JavaThread and java.lang.VirtualThread object
3924     JvmtiVTMSTransitionDisabler::set_is_in_VTMS_transition(thread, vthread, hide);
3925   }
3926 #endif
3927 JVM_END
3928 
3929 // If notifications are disabled then just update the VTMS transition bit and return.
3930 // Otherwise, the bit is updated in the given jvmtiVTMSTransitionDisabler function call below.
3931 JVM_ENTRY(void, JVM_VirtualThreadUnmount(JNIEnv* env, jobject vthread, jboolean hide))
3932 #if INCLUDE_JVMTI
3933   if (!DoJVMTIVirtualThreadTransitions) {
3934     assert(!JvmtiExport::can_support_virtual_threads(), "sanity check");
3935     return;
3936   }
3937   if (JvmtiVTMSTransitionDisabler::VTMS_notify_jvmti_events()) {
3938     JvmtiVTMSTransitionDisabler::VTMS_vthread_unmount(vthread, hide);
3939   } else {
3940     // set VTMS transition bit value in JavaThread and java.lang.VirtualThread object
3941     JvmtiVTMSTransitionDisabler::set_is_in_VTMS_transition(thread, vthread, hide);
3942   }
3943 #endif
3944 JVM_END
3945 
3946 // Always update the temporary VTMS transition bit.
3947 JVM_ENTRY(void, JVM_VirtualThreadHideFrames(JNIEnv* env, jclass clazz, jboolean hide))
3948 #if INCLUDE_JVMTI
3949   if (!DoJVMTIVirtualThreadTransitions) {
3950     assert(!JvmtiExport::can_support_virtual_threads(), "sanity check");
3951     return;
3952   }
3953   assert(!thread->is_in_VTMS_transition(), "sanity check");
3954   assert(thread->is_in_tmp_VTMS_transition() != (bool)hide, "sanity check");
3955   thread->toggle_is_in_tmp_VTMS_transition();
3956 #endif
3957 JVM_END
3958 
3959 // Notification from VirtualThread about disabling JVMTI Suspend in a sync critical section.
3960 // Needed to avoid deadlocks with JVMTI suspend mechanism.
3961 JVM_ENTRY(void, JVM_VirtualThreadDisableSuspend(JNIEnv* env, jclass clazz, jboolean enter))
3962 #if INCLUDE_JVMTI
3963   if (!DoJVMTIVirtualThreadTransitions) {
3964     assert(!JvmtiExport::can_support_virtual_threads(), "sanity check");
3965     return;
3966   }
3967   assert(thread->is_disable_suspend() != (bool)enter,
3968          "nested or unbalanced monitor enter/exit is not allowed");
3969   thread->toggle_is_disable_suspend();
3970 #endif
3971 JVM_END
3972 
3973 /*
3974  * Return the current class's class file version.  The low order 16 bits of the
3975  * returned jint contain the class's major version.  The high order 16 bits
3976  * contain the class's minor version.
3977  */
3978 JVM_ENTRY(jint, JVM_GetClassFileVersion(JNIEnv* env, jclass current))
3979   oop mirror = JNIHandles::resolve_non_null(current);
3980   if (java_lang_Class::is_primitive(mirror)) {
3981     // return latest major version and minor version of 0.
3982     return JVM_CLASSFILE_MAJOR_VERSION;
3983   }
3984   assert(!java_lang_Class::as_Klass(mirror)->is_array_klass(), "unexpected array class");
3985 
3986   Klass* c = java_lang_Class::as_Klass(mirror);
3987   assert(c->is_instance_klass(), "must be");
3988   InstanceKlass* ik = InstanceKlass::cast(c);
3989   return (ik->minor_version() << 16) | ik->major_version();
3990 JVM_END
3991 
3992 /*
3993  * Ensure that code doing a stackwalk and using javaVFrame::locals() to
3994  * get the value will see a materialized value and not a scalar-replaced
3995  * null value.
3996  */
3997 JVM_ENTRY(void, JVM_EnsureMaterializedForStackWalk_func(JNIEnv* env, jobject vthread, jobject value))
3998   JVM_EnsureMaterializedForStackWalk(env, value);
3999 JVM_END
4000 
4001 /*
4002  * Return JNI_TRUE if warnings are printed when agents are dynamically loaded.
4003  */
4004 JVM_LEAF(jboolean, JVM_PrintWarningAtDynamicAgentLoad(void))
4005   return (EnableDynamicAgentLoading && !FLAG_IS_CMDLINE(EnableDynamicAgentLoading)) ? JNI_TRUE : JNI_FALSE;
4006 JVM_END











































































































































































































































   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "cds/aotConstantPoolResolver.hpp"
  27 #include "cds/cdsConfig.hpp"
  28 #include "cds/classListParser.hpp"
  29 #include "cds/classListWriter.hpp"
  30 #include "cds/dynamicArchive.hpp"
  31 #include "cds/heapShared.hpp"
  32 #include "cds/lambdaFormInvokers.hpp"
  33 #include "classfile/classFileStream.hpp"
  34 #include "classfile/classLoader.inline.hpp"
  35 #include "classfile/classLoaderData.hpp"
  36 #include "classfile/classLoaderData.inline.hpp"
  37 #include "classfile/classLoadInfo.hpp"
  38 #include "classfile/javaAssertions.hpp"
  39 #include "classfile/javaClasses.inline.hpp"
  40 #include "classfile/moduleEntry.hpp"
  41 #include "classfile/modules.hpp"
  42 #include "classfile/packageEntry.hpp"
  43 #include "classfile/stringTable.hpp"
  44 #include "classfile/symbolTable.hpp"
  45 #include "classfile/systemDictionary.hpp"
  46 #include "classfile/vmClasses.hpp"

  69 #include "prims/jvm_misc.hpp"
  70 #include "prims/jvmtiExport.hpp"
  71 #include "prims/jvmtiThreadState.inline.hpp"
  72 #include "prims/stackwalk.hpp"
  73 #include "runtime/arguments.hpp"
  74 #include "runtime/atomic.hpp"
  75 #include "runtime/continuation.hpp"
  76 #include "runtime/globals_extension.hpp"
  77 #include "runtime/handles.inline.hpp"
  78 #include "runtime/init.hpp"
  79 #include "runtime/interfaceSupport.inline.hpp"
  80 #include "runtime/deoptimization.hpp"
  81 #include "runtime/handshake.hpp"
  82 #include "runtime/java.hpp"
  83 #include "runtime/javaCalls.hpp"
  84 #include "runtime/javaThread.hpp"
  85 #include "runtime/jfieldIDWorkaround.hpp"
  86 #include "runtime/jniHandles.inline.hpp"
  87 #include "runtime/os.inline.hpp"
  88 #include "runtime/osThread.hpp"
  89 #include "runtime/perfData.inline.hpp"
  90 #include "runtime/reflection.hpp"
  91 #include "runtime/synchronizer.hpp"
  92 #include "runtime/threadIdentifier.hpp"
  93 #include "runtime/threadSMR.hpp"
  94 #include "runtime/vframe.inline.hpp"
  95 #include "runtime/vmOperations.hpp"
  96 #include "runtime/vm_version.hpp"
  97 #include "services/attachListener.hpp"
  98 #include "services/management.hpp"
  99 #include "services/threadService.hpp"
 100 #include "utilities/checkedCast.hpp"
 101 #include "utilities/copy.hpp"
 102 #include "utilities/defaultStream.hpp"
 103 #include "utilities/dtrace.hpp"
 104 #include "utilities/events.hpp"
 105 #include "utilities/macros.hpp"
 106 #include "utilities/utf8.hpp"
 107 #include "utilities/zipLibrary.hpp"
 108 #if INCLUDE_CDS
 109 #include "classfile/systemDictionaryShared.hpp"

 227       if (source_file != nullptr) {
 228         log_debug(class, resolve)("%s %s %s:%d (%s)", from, to, source_file, line_number, trace);
 229       } else {
 230         log_debug(class, resolve)("%s %s (%s)", from, to, trace);
 231       }
 232     }
 233   }
 234 }
 235 
 236 void trace_class_resolution(Klass* to_class) {
 237   EXCEPTION_MARK;
 238   trace_class_resolution_impl(to_class, THREAD);
 239   if (HAS_PENDING_EXCEPTION) {
 240     CLEAR_PENDING_EXCEPTION;
 241   }
 242 }
 243 
 244 // java.lang.System //////////////////////////////////////////////////////////////////////
 245 
 246 
 247 JVM_LEAF_PROF(jlong, JVM_CurrentTimeMillis, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored))
 248   return os::javaTimeMillis();
 249 JVM_END
 250 
 251 JVM_LEAF_PROF(jlong, JVM_NanoTime, JVM_NanoTime(JNIEnv *env, jclass ignored))
 252   return os::javaTimeNanos();
 253 JVM_END
 254 
 255 // The function below is actually exposed by jdk.internal.misc.VM and not
 256 // java.lang.System, but we choose to keep it here so that it stays next
 257 // to JVM_CurrentTimeMillis and JVM_NanoTime
 258 
 259 const jlong MAX_DIFF_SECS = CONST64(0x0100000000); //  2^32
 260 const jlong MIN_DIFF_SECS = -MAX_DIFF_SECS; // -2^32
 261 
 262 JVM_LEAF_PROF(jlong, JVM_GetNanoTimeAdjustment, JVM_GetNanoTimeAdjustment(JNIEnv *env, jclass ignored, jlong offset_secs))
 263   jlong seconds;
 264   jlong nanos;
 265 
 266   os::javaTimeSystemUTC(seconds, nanos);
 267 
 268   // We're going to verify that the result can fit in a long.
 269   // For that we need the difference in seconds between 'seconds'
 270   // and 'offset_secs' to be such that:
 271   //     |seconds - offset_secs| < (2^63/10^9)
 272   // We're going to approximate 10^9 ~< 2^30 (1000^3 ~< 1024^3)
 273   // which makes |seconds - offset_secs| < 2^33
 274   // and we will prefer +/- 2^32 as the maximum acceptable diff
 275   // as 2^32 has a more natural feel than 2^33...
 276   //
 277   // So if |seconds - offset_secs| >= 2^32 - we return a special
 278   // sentinel value (-1) which the caller should take as an
 279   // exception value indicating that the offset given to us is
 280   // too far from range of the current time - leading to too big
 281   // a nano adjustment. The caller is expected to recover by
 282   // computing a more accurate offset and calling this method
 283   // again. (For the record 2^32 secs is ~136 years, so that
 284   // should rarely happen)
 285   //
 286   jlong diff = seconds - offset_secs;
 287   if (diff >= MAX_DIFF_SECS || diff <= MIN_DIFF_SECS) {
 288      return -1; // sentinel value: the offset is too far off the target
 289   }
 290 
 291   // return the adjustment. If you compute a time by adding
 292   // this number of nanoseconds along with the number of seconds
 293   // in the offset you should get the current UTC time.
 294   return (diff * (jlong)1000000000) + nanos;
 295 JVM_END
 296 
 297 JVM_ENTRY_PROF(void, JVM_ArrayCopy, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos,
 298                                jobject dst, jint dst_pos, jint length))
 299   // Check if we have null pointers
 300   if (src == nullptr || dst == nullptr) {
 301     THROW(vmSymbols::java_lang_NullPointerException());
 302   }
 303   arrayOop s = arrayOop(JNIHandles::resolve_non_null(src));
 304   arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst));
 305   assert(oopDesc::is_oop(s), "JVM_ArrayCopy: src not an oop");
 306   assert(oopDesc::is_oop(d), "JVM_ArrayCopy: dst not an oop");
 307   // Do copy
 308   s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread);
 309 JVM_END
 310 
 311 
 312 static void set_property(Handle props, const char* key, const char* value, TRAPS) {
 313   JavaValue r(T_OBJECT);
 314   // public synchronized Object put(Object key, Object value);
 315   HandleMark hm(THREAD);
 316   Handle key_str    = java_lang_String::create_from_platform_dependent_str(key, CHECK);
 317   Handle value_str  = java_lang_String::create_from_platform_dependent_str((value != nullptr ? value : ""), CHECK);
 318   JavaCalls::call_virtual(&r,
 319                           props,
 320                           vmClasses::Properties_klass(),
 321                           vmSymbols::put_name(),
 322                           vmSymbols::object_object_object_signature(),
 323                           key_str,
 324                           value_str,
 325                           THREAD);
 326 }
 327 
 328 
 329 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties));
 330 
 331 /*
 332  * Return all of the system properties in a Java String array with alternating
 333  * names and values from the jvm SystemProperty.
 334  * Which includes some internal and all commandline -D defined properties.
 335  */
 336 JVM_ENTRY_PROF(jobjectArray, JVM_GetProperties, JVM_GetProperties(JNIEnv *env))
 337   ResourceMark rm(THREAD);
 338   HandleMark hm(THREAD);
 339   int ndx = 0;
 340   int fixedCount = 2;
 341 
 342   SystemProperty* p = Arguments::system_properties();
 343   int count = Arguments::PropertyList_count(p);
 344 
 345   // Allocate result String array
 346   InstanceKlass* ik = vmClasses::String_klass();
 347   objArrayOop r = oopFactory::new_objArray(ik, (count + fixedCount) * 2, CHECK_NULL);
 348   objArrayHandle result_h(THREAD, r);
 349 
 350   while (p != nullptr) {
 351     const char * key = p->key();
 352     if (strcmp(key, "sun.nio.MaxDirectMemorySize") != 0) {
 353         const char * value = p->value();
 354         Handle key_str    = java_lang_String::create_from_platform_dependent_str(key, CHECK_NULL);
 355         Handle value_str  = java_lang_String::create_from_platform_dependent_str((value != nullptr ? value : ""), CHECK_NULL);
 356         result_h->obj_at_put(ndx * 2,  key_str());

 404       Handle key_str = java_lang_String::create_from_platform_dependent_str("sun.management.compiler", CHECK_NULL);
 405       Handle value_str  = java_lang_String::create_from_platform_dependent_str(compiler_name, CHECK_NULL);
 406       result_h->obj_at_put(ndx * 2,  key_str());
 407       result_h->obj_at_put(ndx * 2 + 1, value_str());
 408       ndx++;
 409     }
 410   }
 411 
 412   return (jobjectArray) JNIHandles::make_local(THREAD, result_h());
 413 JVM_END
 414 
 415 
 416 /*
 417  * Return the temporary directory that the VM uses for the attach
 418  * and perf data files.
 419  *
 420  * It is important that this directory is well-known and the
 421  * same for all VM instances. It cannot be affected by configuration
 422  * variables such as java.io.tmpdir.
 423  */
 424 JVM_ENTRY_PROF(jstring, JVM_GetTemporaryDirectory, JVM_GetTemporaryDirectory(JNIEnv *env))
 425   HandleMark hm(THREAD);
 426   const char* temp_dir = os::get_temp_directory();
 427   Handle h = java_lang_String::create_from_platform_dependent_str(temp_dir, CHECK_NULL);
 428   return (jstring) JNIHandles::make_local(THREAD, h());
 429 JVM_END
 430 
 431 
 432 // java.lang.Runtime /////////////////////////////////////////////////////////////////////////
 433 
 434 extern volatile jint vm_created;
 435 
 436 JVM_ENTRY_NO_ENV_PROF(void, JVM_BeforeHalt, JVM_BeforeHalt())
 437   EventShutdown event;
 438   if (event.should_commit()) {
 439     event.set_reason("Shutdown requested from Java");
 440     event.commit();
 441   }
 442 JVM_END
 443 
 444 
 445 JVM_ENTRY_NO_ENV_PROF(void, JVM_Halt, JVM_Halt(jint code))
 446   before_exit(thread, true);
 447   vm_exit(code);
 448 JVM_END
 449 
 450 
 451 JVM_ENTRY_NO_ENV_PROF(void, JVM_GC, JVM_GC(void))
 452   if (!DisableExplicitGC) {
 453     EventSystemGC event;
 454     event.set_invokedConcurrent(ExplicitGCInvokesConcurrent);
 455     Universe::heap()->collect(GCCause::_java_lang_system_gc);
 456     event.commit();
 457   }
 458 JVM_END
 459 
 460 
 461 JVM_LEAF_PROF(jlong, JVM_MaxObjectInspectionAge, JVM_MaxObjectInspectionAge(void))
 462   return Universe::heap()->millis_since_last_whole_heap_examined();
 463 JVM_END
 464 
 465 
 466 static inline jlong convert_size_t_to_jlong(size_t val) {
 467   // In the 64-bit vm, a size_t can overflow a jlong (which is signed).
 468   NOT_LP64 (return (jlong)val;)
 469   LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);)
 470 }
 471 
 472 JVM_ENTRY_NO_ENV_PROF(jlong, JVM_TotalMemory, JVM_TotalMemory(void))
 473   size_t n = Universe::heap()->capacity();
 474   return convert_size_t_to_jlong(n);
 475 JVM_END
 476 
 477 
 478 JVM_ENTRY_NO_ENV_PROF(jlong, JVM_FreeMemory, JVM_FreeMemory(void))
 479   size_t n = Universe::heap()->unused();
 480   return convert_size_t_to_jlong(n);
 481 JVM_END
 482 
 483 
 484 JVM_ENTRY_NO_ENV_PROF(jlong, JVM_MaxMemory, JVM_MaxMemory(void))
 485   size_t n = Universe::heap()->max_capacity();
 486   return convert_size_t_to_jlong(n);
 487 JVM_END
 488 
 489 
 490 JVM_ENTRY_NO_ENV_PROF(jint, JVM_ActiveProcessorCount, JVM_ActiveProcessorCount(void))
 491   return os::active_processor_count();
 492 JVM_END
 493 
 494 JVM_LEAF_PROF(jboolean, JVM_IsUseContainerSupport, JVM_IsUseContainerSupport(void))
 495 #ifdef LINUX
 496   if (UseContainerSupport) {
 497     return JNI_TRUE;
 498   }
 499 #endif
 500   return JNI_FALSE;
 501 JVM_END
 502 
 503 JVM_LEAF(jboolean, JVM_IsContainerized(void))
 504 #ifdef LINUX
 505   if (OSContainer::is_containerized()) {
 506     return JNI_TRUE;
 507   }
 508 #endif
 509   return JNI_FALSE;
 510 JVM_END
 511 
 512 // java.lang.Throwable //////////////////////////////////////////////////////
 513 
 514 JVM_ENTRY_PROF(void, JVM_FillInStackTrace, JVM_FillInStackTrace(JNIEnv *env, jobject receiver))
 515   Handle exception(thread, JNIHandles::resolve_non_null(receiver));
 516   java_lang_Throwable::fill_in_stack_trace(exception);
 517 JVM_END
 518 
 519 // java.lang.NullPointerException ///////////////////////////////////////////
 520 
 521 JVM_ENTRY_PROF(jstring, JVM_GetExtendedNPEMessage, JVM_GetExtendedNPEMessage(JNIEnv *env, jthrowable throwable))
 522   if (!ShowCodeDetailsInExceptionMessages) return nullptr;
 523 
 524   oop exc = JNIHandles::resolve_non_null(throwable);
 525 
 526   Method* method;
 527   int bci;
 528   if (!java_lang_Throwable::get_top_method_and_bci(exc, &method, &bci)) {
 529     return nullptr;
 530   }
 531   if (method->is_native()) {
 532     return nullptr;
 533   }
 534 
 535   stringStream ss;
 536   bool ok = BytecodeUtils::get_NPE_message_at(&ss, method, bci);
 537   if (ok) {
 538     oop result = java_lang_String::create_oop_from_str(ss.base(), CHECK_NULL);
 539     return (jstring) JNIHandles::make_local(THREAD, result);
 540   } else {
 541     return nullptr;
 542   }
 543 JVM_END
 544 
 545 // java.lang.StackTraceElement //////////////////////////////////////////////
 546 
 547 
 548 JVM_ENTRY_PROF(void, JVM_InitStackTraceElementArray, JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject backtrace, jint depth))
 549   Handle backtraceh(THREAD, JNIHandles::resolve(backtrace));
 550   objArrayOop st = objArrayOop(JNIHandles::resolve(elements));
 551   objArrayHandle stack_trace(THREAD, st);
 552   // Fill in the allocated stack trace
 553   java_lang_Throwable::get_stack_trace_elements(depth, backtraceh, stack_trace, CHECK);
 554 JVM_END
 555 
 556 
 557 JVM_ENTRY_PROF(void, JVM_InitStackTraceElement, JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo))
 558   Handle stack_frame_info(THREAD, JNIHandles::resolve_non_null(stackFrameInfo));
 559   Handle stack_trace_element(THREAD, JNIHandles::resolve_non_null(element));
 560   java_lang_StackFrameInfo::to_stack_trace_element(stack_frame_info, stack_trace_element, CHECK);
 561 JVM_END
 562 
 563 
 564 // java.lang.StackWalker //////////////////////////////////////////////////////
 565 JVM_ENTRY_PROF(void, JVM_ExpandStackFrameInfo, JVM_ExpandStackFrameInfo(JNIEnv *env, jobject obj))
 566   Handle stack_frame_info(THREAD, JNIHandles::resolve_non_null(obj));
 567 
 568   bool have_name = (java_lang_StackFrameInfo::name(stack_frame_info()) != nullptr);
 569   bool have_type = (java_lang_StackFrameInfo::type(stack_frame_info()) != nullptr);
 570   Method* method = java_lang_StackFrameInfo::get_method(stack_frame_info());
 571   if (!have_name) {
 572     oop name = StringTable::intern(method->name(), CHECK);
 573     java_lang_StackFrameInfo::set_name(stack_frame_info(), name);
 574   }
 575   if (!have_type) {
 576     Handle type = java_lang_String::create_from_symbol(method->signature(), CHECK);
 577     java_lang_StackFrameInfo::set_type(stack_frame_info(), type());
 578   }
 579 JVM_END
 580 
 581 JVM_ENTRY_PROF(jobject, JVM_CallStackWalk, JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jint mode,
 582                                                          jint skip_frames, jobject contScope, jobject cont,
 583                                                          jint buffer_size, jint start_index, jobjectArray frames))
 584   if (!thread->has_last_Java_frame()) {
 585     THROW_MSG_(vmSymbols::java_lang_InternalError(), "doStackWalk: no stack trace", nullptr);
 586   }
 587 
 588   Handle stackStream_h(THREAD, JNIHandles::resolve_non_null(stackStream));
 589   Handle contScope_h(THREAD, JNIHandles::resolve(contScope));
 590   Handle cont_h(THREAD, JNIHandles::resolve(cont));
 591   // frames array is a ClassFrameInfo[] array when only getting caller reference,
 592   // and a StackFrameInfo[] array (or derivative) otherwise. It should never
 593   // be null.
 594   objArrayOop fa = objArrayOop(JNIHandles::resolve_non_null(frames));
 595   objArrayHandle frames_array_h(THREAD, fa);
 596 
 597   if (frames_array_h->length() < buffer_size) {
 598     THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), "not enough space in buffers", nullptr);
 599   }
 600 
 601   oop result = StackWalk::walk(stackStream_h, mode, skip_frames, contScope_h, cont_h,
 602                                buffer_size, start_index, frames_array_h, CHECK_NULL);
 603   return JNIHandles::make_local(THREAD, result);
 604 JVM_END
 605 
 606 
 607 JVM_ENTRY_PROF(jint, JVM_MoreStackWalk, JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jint mode, jlong anchor,
 608                                                       jint last_batch_count, jint buffer_size, jint start_index,
 609                                                       jobjectArray frames))
 610   // frames array is a ClassFrameInfo[] array when only getting caller reference,
 611   // and a StackFrameInfo[] array (or derivative) otherwise. It should never
 612   // be null.
 613   objArrayOop fa = objArrayOop(JNIHandles::resolve_non_null(frames));
 614   objArrayHandle frames_array_h(THREAD, fa);
 615 
 616   if (frames_array_h->length() < buffer_size) {
 617     THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "not enough space in buffers");
 618   }
 619 
 620   Handle stackStream_h(THREAD, JNIHandles::resolve_non_null(stackStream));
 621   return StackWalk::fetchNextBatch(stackStream_h, mode, anchor, last_batch_count, buffer_size,
 622                                   start_index, frames_array_h, THREAD);
 623 JVM_END
 624 
 625 JVM_ENTRY_PROF(void, JVM_SetStackWalkContinuation, JVM_SetStackWalkContinuation(JNIEnv *env, jobject stackStream, jlong anchor, jobjectArray frames, jobject cont))
 626   objArrayOop fa = objArrayOop(JNIHandles::resolve_non_null(frames));
 627   objArrayHandle frames_array_h(THREAD, fa);
 628   Handle stackStream_h(THREAD, JNIHandles::resolve_non_null(stackStream));
 629   Handle cont_h(THREAD, JNIHandles::resolve_non_null(cont));
 630 
 631   StackWalk::setContinuation(stackStream_h, anchor, frames_array_h, cont_h, THREAD);
 632 JVM_END
 633 
 634 // java.lang.Object ///////////////////////////////////////////////
 635 
 636 
 637 JVM_ENTRY_PROF(jint, JVM_IHashCode, JVM_IHashCode(JNIEnv* env, jobject handle))
 638   // as implemented in the classic virtual machine; return 0 if object is null
 639   return handle == nullptr ? 0 :
 640          checked_cast<jint>(ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)));
 641 JVM_END
 642 
 643 
 644 JVM_ENTRY_PROF(void, JVM_MonitorWait, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms))
 645   Handle obj(THREAD, JNIHandles::resolve_non_null(handle));
 646   JavaThreadInObjectWaitState jtiows(thread, ms != 0);
 647   if (JvmtiExport::should_post_monitor_wait()) {
 648     JvmtiExport::post_monitor_wait(thread, obj(), ms);
 649 
 650     // The current thread already owns the monitor and it has not yet
 651     // been added to the wait queue so the current thread cannot be
 652     // made the successor. This means that the JVMTI_EVENT_MONITOR_WAIT
 653     // event handler cannot accidentally consume an unpark() meant for
 654     // the ParkEvent associated with this ObjectMonitor.
 655   }
 656   ObjectSynchronizer::wait(obj, ms, CHECK);
 657 JVM_END
 658 
 659 
 660 JVM_ENTRY_PROF(void, JVM_MonitorNotify, JVM_MonitorNotify(JNIEnv* env, jobject handle))
 661   Handle obj(THREAD, JNIHandles::resolve_non_null(handle));
 662   ObjectSynchronizer::notify(obj, CHECK);
 663 JVM_END
 664 
 665 
 666 JVM_ENTRY_PROF(void, JVM_MonitorNotifyAll, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle))
 667   Handle obj(THREAD, JNIHandles::resolve_non_null(handle));
 668   ObjectSynchronizer::notifyall(obj, CHECK);
 669 JVM_END
 670 
 671 
 672 JVM_ENTRY_PROF(jobject, JVM_Clone, JVM_Clone(JNIEnv* env, jobject handle))
 673   Handle obj(THREAD, JNIHandles::resolve_non_null(handle));
 674   Klass* klass = obj->klass();
 675   JvmtiVMObjectAllocEventCollector oam;
 676 
 677 #ifdef ASSERT
 678   // Just checking that the cloneable flag is set correct
 679   if (obj->is_array()) {
 680     guarantee(klass->is_cloneable(), "all arrays are cloneable");
 681   } else {
 682     guarantee(obj->is_instance(), "should be instanceOop");
 683     bool cloneable = klass->is_subtype_of(vmClasses::Cloneable_klass());
 684     guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag");
 685   }
 686 #endif
 687 
 688   // Check if class of obj supports the Cloneable interface.
 689   // All arrays are considered to be cloneable (See JLS 20.1.5).
 690   // All j.l.r.Reference classes are considered non-cloneable.
 691   if (!klass->is_cloneable() ||
 692       (klass->is_instance_klass() &&

 705   } else {
 706     new_obj_oop = Universe::heap()->obj_allocate(klass, size, CHECK_NULL);
 707   }
 708 
 709   HeapAccess<>::clone(obj(), new_obj_oop, size);
 710 
 711   Handle new_obj(THREAD, new_obj_oop);
 712   // Caution: this involves a java upcall, so the clone should be
 713   // "gc-robust" by this stage.
 714   if (klass->has_finalizer()) {
 715     assert(obj->is_instance(), "should be instanceOop");
 716     new_obj_oop = InstanceKlass::register_finalizer(instanceOop(new_obj()), CHECK_NULL);
 717     new_obj = Handle(THREAD, new_obj_oop);
 718   }
 719 
 720   return JNIHandles::make_local(THREAD, new_obj());
 721 JVM_END
 722 
 723 // java.lang.ref.Finalizer ////////////////////////////////////////////////////
 724 
 725 JVM_ENTRY_PROF(void, JVM_ReportFinalizationComplete, JVM_ReportFinalizationComplete(JNIEnv * env, jobject finalizee))
 726   MANAGEMENT_ONLY(FinalizerService::on_complete(JNIHandles::resolve_non_null(finalizee), THREAD);)
 727 JVM_END
 728 
 729 JVM_LEAF_PROF(jboolean, JVM_IsFinalizationEnabled, JVM_IsFinalizationEnabled(JNIEnv * env))
 730   return InstanceKlass::is_finalization_enabled();
 731 JVM_END
 732 
 733 // jdk.internal.vm.Continuation /////////////////////////////////////////////////////
 734 
 735 JVM_ENTRY_PROF(void, JVM_RegisterContinuationMethods, JVM_RegisterContinuationMethods(JNIEnv *env, jclass cls))
 736   CONT_RegisterNativeMethods(env, cls);
 737 JVM_END
 738 
 739 // java.io.File ///////////////////////////////////////////////////////////////
 740 
 741 JVM_LEAF_PROF(char*, JVM_NativePath, JVM_NativePath(char* path))
 742   return os::native_path(path);
 743 JVM_END
 744 
 745 
 746 // Misc. class handling ///////////////////////////////////////////////////////////
 747 
 748 
 749 JVM_ENTRY_PROF(jclass, JVM_GetCallerClass, JVM_GetCallerClass(JNIEnv* env))
 750   // Getting the class of the caller frame.
 751   //
 752   // The call stack at this point looks something like this:
 753   //
 754   // [0] [ @CallerSensitive public jdk.internal.reflect.Reflection.getCallerClass ]
 755   // [1] [ @CallerSensitive API.method                                   ]
 756   // [.] [ (skipped intermediate frames)                                 ]
 757   // [n] [ caller                                                        ]
 758   vframeStream vfst(thread);
 759   // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass
 760   for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) {
 761     Method* m = vfst.method();
 762     assert(m != nullptr, "sanity");
 763     switch (n) {
 764     case 0:
 765       // This must only be called from Reflection.getCallerClass
 766       if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) {
 767         THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass");
 768       }
 769       // fall-through
 770     case 1:
 771       // Frame 0 and 1 must be caller sensitive.
 772       if (!m->caller_sensitive()) {
 773         THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n));
 774       }
 775       break;
 776     default:
 777       if (!m->is_ignored_by_security_stack_walk()) {
 778         // We have reached the desired frame; return the holder class.
 779         return (jclass) JNIHandles::make_local(THREAD, m->method_holder()->java_mirror());
 780       }
 781       break;
 782     }
 783   }
 784   return nullptr;
 785 JVM_END
 786 
 787 
 788 JVM_ENTRY_PROF(jclass, JVM_FindPrimitiveClass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf))
 789   oop mirror = nullptr;
 790   BasicType t = name2type(utf);
 791   if (t != T_ILLEGAL && !is_reference_type(t)) {
 792     mirror = Universe::java_mirror(t);
 793   }
 794   if (mirror == nullptr) {
 795     THROW_MSG_NULL(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf);
 796   } else {
 797     return (jclass) JNIHandles::make_local(THREAD, mirror);
 798   }
 799 JVM_END
 800 
 801 
 802 // Returns a class loaded by the bootstrap class loader; or null
 803 // if not found.  ClassNotFoundException is not thrown.
 804 // FindClassFromBootLoader is exported to the launcher for windows.
 805 JVM_ENTRY_PROF(jclass, JVM_FindClassFromBootLoader, JVM_FindClassFromBootLoader(JNIEnv* env, const char* name))

 806   // Java libraries should ensure that name is never null or illegal.
 807   if (name == nullptr || (int)strlen(name) > Symbol::max_length()) {
 808     // It's impossible to create this class;  the name cannot fit
 809     // into the constant pool.
 810     return nullptr;
 811   }
 812   assert(UTF8::is_legal_utf8((const unsigned char*)name, strlen(name), false), "illegal UTF name");
 813 
 814   TempNewSymbol h_name = SymbolTable::new_symbol(name);
 815   Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL);
 816   if (k == nullptr) {
 817     return nullptr;
 818   }
 819 
 820   if (log_is_enabled(Debug, class, resolve)) {
 821     trace_class_resolution(k);
 822   }
 823   return (jclass) JNIHandles::make_local(THREAD, k->java_mirror());
 824 JVM_END
 825 
 826 // Find a class with this name in this loader, using the caller's protection domain.
 827 JVM_ENTRY_PROF(jclass, JVM_FindClassFromCaller, JVM_FindClassFromCaller(JNIEnv* env, const char* name,
 828                                                                    jboolean init, jobject loader,
 829                                                                    jclass caller))
 830   TempNewSymbol h_name =
 831        SystemDictionary::class_name_symbol(name, vmSymbols::java_lang_ClassNotFoundException(),
 832                                            CHECK_NULL);
 833 
 834   oop loader_oop = JNIHandles::resolve(loader);
 835   oop from_class = JNIHandles::resolve(caller);
 836   oop protection_domain = nullptr;
 837   // If loader is null, shouldn't call ClassLoader.checkPackageAccess; otherwise get
 838   // NPE. Put it in another way, the bootstrap class loader has all permission and
 839   // thus no checkPackageAccess equivalence in the VM class loader.
 840   // The caller is also passed as null by the java code if there is no security
 841   // manager to avoid the performance cost of getting the calling class.
 842   if (from_class != nullptr && loader_oop != nullptr) {
 843     protection_domain = java_lang_Class::as_Klass(from_class)->protection_domain();
 844   }
 845 
 846   Handle h_loader(THREAD, loader_oop);
 847   Handle h_prot(THREAD, protection_domain);
 848   jclass result = find_class_from_class_loader(env, h_name, init, h_loader,
 849                                                h_prot, false, THREAD);
 850 
 851   if (log_is_enabled(Debug, class, resolve) && result != nullptr) {
 852     trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
 853   }
 854   return result;
 855 JVM_END
 856 
 857 // Currently only called from the old verifier.
 858 JVM_ENTRY_PROF(jclass, JVM_FindClassFromClass, JVM_FindClassFromClass(JNIEnv *env, const char *name,
 859                                                                  jboolean init, jclass from))
 860   TempNewSymbol h_name =
 861        SystemDictionary::class_name_symbol(name, vmSymbols::java_lang_ClassNotFoundException(),
 862                                            CHECK_NULL);
 863   oop from_class_oop = JNIHandles::resolve(from);
 864   Klass* from_class = (from_class_oop == nullptr)
 865                            ? (Klass*)nullptr
 866                            : java_lang_Class::as_Klass(from_class_oop);
 867   oop class_loader = nullptr;
 868   oop protection_domain = nullptr;
 869   if (from_class != nullptr) {
 870     class_loader = from_class->class_loader();
 871     protection_domain = from_class->protection_domain();
 872   }
 873   Handle h_loader(THREAD, class_loader);
 874   Handle h_prot  (THREAD, protection_domain);
 875   jclass result = find_class_from_class_loader(env, h_name, init, h_loader,
 876                                                h_prot, true, thread);
 877 
 878   if (log_is_enabled(Debug, class, resolve) && result != nullptr) {
 879     // this function is generally only used for class loading during verification.

1042                                   ik->external_name(),
1043                                   host_class->external_name(),
1044                                   ik->is_hidden() ? "is hidden" : "is not hidden");
1045     }
1046   }
1047 
1048   if ((!is_hidden || is_nestmate) && !Reflection::is_same_class_package(lookup_k, ik)) {
1049     // non-hidden class or nestmate class must be in the same package as the Lookup class
1050     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Lookup class and defined class are in different packages");
1051   }
1052 
1053   if (init) {
1054     ik->initialize(CHECK_NULL);
1055   } else {
1056     ik->link_class(CHECK_NULL);
1057   }
1058 
1059   return (jclass) JNIHandles::make_local(THREAD, ik->java_mirror());
1060 }
1061 
1062 JVM_ENTRY_PROF(jclass, JVM_DefineClass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd))
1063   return jvm_define_class_common(name, loader, buf, len, pd, nullptr, THREAD);
1064 JVM_END
1065 
1066 /*
1067  * Define a class with the specified lookup class.
1068  *  lookup:  Lookup class
1069  *  name:    the name of the class
1070  *  buf:     class bytes
1071  *  len:     length of class bytes
1072  *  pd:      protection domain
1073  *  init:    initialize the class
1074  *  flags:   properties of the class
1075  *  classData: private static pre-initialized field
1076  */
1077 JVM_ENTRY_PROF(jclass, JVM_LookupDefineClass, JVM_LookupDefineClass(JNIEnv *env, jclass lookup, const char *name, const jbyte *buf,
1078           jsize len, jobject pd, jboolean initialize, int flags, jobject classData))
1079 
1080   if (lookup == nullptr) {
1081     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Lookup class is null");
1082   }
1083 
1084   assert(buf != nullptr, "buf must not be null");
1085 
1086   return jvm_lookup_define_class(lookup, name, buf, len, pd, initialize, flags, classData, THREAD);
1087 JVM_END
1088 
1089 JVM_ENTRY_PROF(jclass, JVM_DefineClassWithSource, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source))

1090   return jvm_define_class_common(name, loader, buf, len, pd, source, THREAD);
1091 JVM_END
1092 
1093 JVM_ENTRY_PROF(jclass, JVM_FindLoadedClass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name))
1094   ResourceMark rm(THREAD);
1095 
1096   Handle h_name (THREAD, JNIHandles::resolve_non_null(name));
1097   char* str = java_lang_String::as_utf8_string(h_name());
1098 
1099   // Sanity check, don't expect null
1100   if (str == nullptr) return nullptr;
1101 
1102   // Internalize the string, converting '.' to '/' in string.
1103   char* p = (char*)str;
1104   while (*p != '\0') {
1105     if (*p == '.') {
1106       *p = '/';
1107     }
1108     p++;
1109   }
1110 
1111   const int str_len = (int)(p - str);
1112   if (str_len > Symbol::max_length()) {
1113     // It's impossible to create this class;  the name cannot fit

1119   // Security Note:
1120   //   The Java level wrapper will perform the necessary security check allowing
1121   //   us to pass the null as the initiating class loader.
1122   Handle h_loader(THREAD, JNIHandles::resolve(loader));
1123   Klass* k = SystemDictionary::find_instance_or_array_klass(THREAD, klass_name,
1124                                                             h_loader,
1125                                                             Handle());
1126 #if INCLUDE_CDS
1127   if (k == nullptr) {
1128     // If the class is not already loaded, try to see if it's in the shared
1129     // archive for the current classloader (h_loader).
1130     k = SystemDictionaryShared::find_or_load_shared_class(klass_name, h_loader, CHECK_NULL);
1131   }
1132 #endif
1133   return (k == nullptr) ? nullptr :
1134             (jclass) JNIHandles::make_local(THREAD, k->java_mirror());
1135 JVM_END
1136 
1137 // Module support //////////////////////////////////////////////////////////////////////////////
1138 
1139 JVM_ENTRY_PROF(void, JVM_DefineModule, JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version,
1140                                                    jstring location, jobjectArray packages))
1141   Handle h_module (THREAD, JNIHandles::resolve(module));
1142   Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1143 JVM_END
1144 
1145 JVM_ENTRY_PROF(void, JVM_SetBootLoaderUnnamedModule, JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module))
1146   Handle h_module (THREAD, JNIHandles::resolve(module));
1147   Modules::set_bootloader_unnamed_module(h_module, CHECK);
1148 JVM_END
1149 
1150 JVM_ENTRY_PROF(void, JVM_AddModuleExports, JVM_AddModuleExports(JNIEnv *env, jobject from_module, jstring package, jobject to_module))
1151   Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1152   Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1153   Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1154 JVM_END
1155 
1156 JVM_ENTRY_PROF(void, JVM_AddModuleExportsToAllUnnamed, JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, jstring package))
1157   Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1158   Modules::add_module_exports_to_all_unnamed(h_from_module, package, CHECK);
1159 JVM_END
1160 
1161 JVM_ENTRY_PROF(void, JVM_AddModuleExportsToAll, JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, jstring package))
1162   Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1163   Modules::add_module_exports(h_from_module, package, Handle(), CHECK);
1164 JVM_END
1165 
1166 JVM_ENTRY_PROF(void, JVM_AddReadsModule, JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module))
1167   Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1168   Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1169   Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1170 JVM_END
1171 
1172 JVM_ENTRY_PROF(void, JVM_DefineArchivedModules, JVM_DefineArchivedModules(JNIEnv *env, jobject platform_loader, jobject system_loader))
1173   Handle h_platform_loader (THREAD, JNIHandles::resolve(platform_loader));
1174   Handle h_system_loader (THREAD, JNIHandles::resolve(system_loader));
1175   Modules::define_archived_modules(h_platform_loader, h_system_loader, CHECK);
1176 JVM_END
1177 
1178 // Reflection support //////////////////////////////////////////////////////////////////////////////
1179 
1180 JVM_ENTRY_PROF(jstring, JVM_InitClassName, JVM_InitClassName(JNIEnv *env, jclass cls))
1181   assert (cls != nullptr, "illegal class");
1182   JvmtiVMObjectAllocEventCollector oam;
1183   ResourceMark rm(THREAD);
1184   HandleMark hm(THREAD);
1185   Handle java_class(THREAD, JNIHandles::resolve(cls));
1186   oop result = java_lang_Class::name(java_class, CHECK_NULL);
1187   return (jstring) JNIHandles::make_local(THREAD, result);
1188 JVM_END
1189 
1190 
1191 JVM_ENTRY_PROF(jobjectArray, JVM_GetClassInterfaces, JVM_GetClassInterfaces(JNIEnv *env, jclass cls))
1192   JvmtiVMObjectAllocEventCollector oam;
1193   oop mirror = JNIHandles::resolve_non_null(cls);
1194 
1195   // Special handling for primitive objects
1196   if (java_lang_Class::is_primitive(mirror)) {
1197     // Primitive objects does not have any interfaces
1198     objArrayOop r = oopFactory::new_objArray(vmClasses::Class_klass(), 0, CHECK_NULL);
1199     return (jobjectArray) JNIHandles::make_local(THREAD, r);
1200   }
1201 
1202   Klass* klass = java_lang_Class::as_Klass(mirror);
1203   // Figure size of result array
1204   int size;
1205   if (klass->is_instance_klass()) {
1206     size = InstanceKlass::cast(klass)->local_interfaces()->length();
1207   } else {
1208     assert(klass->is_objArray_klass() || klass->is_typeArray_klass(), "Illegal mirror klass");
1209     size = 2;
1210   }
1211 
1212   // Allocate result array
1213   objArrayOop r = oopFactory::new_objArray(vmClasses::Class_klass(), size, CHECK_NULL);
1214   objArrayHandle result (THREAD, r);
1215   // Fill in result
1216   if (klass->is_instance_klass()) {
1217     // Regular instance klass, fill in all local interfaces
1218     for (int index = 0; index < size; index++) {
1219       Klass* k = InstanceKlass::cast(klass)->local_interfaces()->at(index);
1220       result->obj_at_put(index, k->java_mirror());
1221     }
1222   } else {
1223     // All arrays implement java.lang.Cloneable and java.io.Serializable
1224     result->obj_at_put(0, vmClasses::Cloneable_klass()->java_mirror());
1225     result->obj_at_put(1, vmClasses::Serializable_klass()->java_mirror());
1226   }
1227   return (jobjectArray) JNIHandles::make_local(THREAD, result());
1228 JVM_END
1229 
1230 
1231 JVM_ENTRY_PROF(jboolean, JVM_IsInterface, JVM_IsInterface(JNIEnv *env, jclass cls))
1232   oop mirror = JNIHandles::resolve_non_null(cls);
1233   if (java_lang_Class::is_primitive(mirror)) {
1234     return JNI_FALSE;
1235   }
1236   Klass* k = java_lang_Class::as_Klass(mirror);
1237   jboolean result = k->is_interface();
1238   assert(!result || k->is_instance_klass(),
1239          "all interfaces are instance types");
1240   // The compiler intrinsic for isInterface tests the
1241   // Klass::_access_flags bits in the same way.
1242   return result;
1243 JVM_END
1244 
1245 JVM_ENTRY_PROF(jboolean, JVM_IsHiddenClass, JVM_IsHiddenClass(JNIEnv *env, jclass cls))
1246   oop mirror = JNIHandles::resolve_non_null(cls);
1247   if (java_lang_Class::is_primitive(mirror)) {
1248     return JNI_FALSE;
1249   }
1250   Klass* k = java_lang_Class::as_Klass(mirror);
1251   return k->is_hidden();
1252 JVM_END
1253 
1254 JVM_ENTRY_PROF(jobject, JVM_GetProtectionDomain, JVM_GetProtectionDomain(JNIEnv *env, jclass cls))

1255   oop mirror = JNIHandles::resolve_non_null(cls);
1256   if (mirror == nullptr) {
1257     THROW_(vmSymbols::java_lang_NullPointerException(), nullptr);
1258   }
1259 
1260   if (java_lang_Class::is_primitive(mirror)) {
1261     // Primitive types does not have a protection domain.
1262     return nullptr;
1263   }
1264 
1265   oop pd = java_lang_Class::protection_domain(mirror);
1266   return (jobject) JNIHandles::make_local(THREAD, pd);
1267 JVM_END
1268 
1269 
1270 // Returns the inherited_access_control_context field of the running thread.
1271 JVM_ENTRY_PROF(jobject, JVM_GetInheritedAccessControlContext, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls))
1272   oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj());
1273   return JNIHandles::make_local(THREAD, result);
1274 JVM_END
1275 
1276 JVM_ENTRY_PROF(jobject, JVM_GetStackAccessControlContext, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls))
1277   if (!UsePrivilegedStack) return nullptr;
1278 
1279   ResourceMark rm(THREAD);
1280   GrowableArray<Handle>* local_array = new GrowableArray<Handle>(12);
1281   JvmtiVMObjectAllocEventCollector oam;
1282 
1283   // count the protection domains on the execution stack. We collapse
1284   // duplicate consecutive protection domains into a single one, as
1285   // well as stopping when we hit a privileged frame.
1286 
1287   oop previous_protection_domain = nullptr;
1288   Handle privileged_context(thread, nullptr);
1289   bool is_privileged = false;
1290   oop protection_domain = nullptr;
1291 
1292   // Iterate through Java frames
1293   vframeStream vfst(thread);
1294   for(; !vfst.at_end(); vfst.next()) {
1295     // get method of frame
1296     Method* method = vfst.method();

1340                                                  local_array->length(), CHECK_NULL);
1341   objArrayHandle h_context(thread, context);
1342   for (int index = 0; index < local_array->length(); index++) {
1343     h_context->obj_at_put(index, local_array->at(index)());
1344   }
1345 
1346   oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL);
1347 
1348   return JNIHandles::make_local(THREAD, result);
1349 JVM_END
1350 
1351 class ScopedValueBindingsResolver {
1352 public:
1353   InstanceKlass* Carrier_klass;
1354   ScopedValueBindingsResolver(JavaThread* THREAD) {
1355     Klass *k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_ScopedValue_Carrier(), true, THREAD);
1356     Carrier_klass = InstanceKlass::cast(k);
1357   }
1358 };
1359 
1360 JVM_ENTRY_PROF(jobject, JVM_FindScopedValueBindings, JVM_FindScopedValueBindings(JNIEnv *env, jclass cls))
1361   ResourceMark rm(THREAD);
1362   GrowableArray<Handle>* local_array = new GrowableArray<Handle>(12);
1363   JvmtiVMObjectAllocEventCollector oam;
1364 
1365   static ScopedValueBindingsResolver resolver(THREAD);
1366 
1367   // Iterate through Java frames
1368   vframeStream vfst(thread);
1369   for(; !vfst.at_end(); vfst.next()) {
1370     int loc = -1;
1371     // get method of frame
1372     Method* method = vfst.method();
1373 
1374     Symbol *name = method->name();
1375 
1376     InstanceKlass* holder = method->method_holder();
1377     if (name == vmSymbols::runWith_method_name()) {
1378       if (holder == vmClasses::Thread_klass()
1379           || holder == resolver.Carrier_klass) {
1380         loc = 1;
1381       }
1382     }
1383 
1384     if (loc != -1) {
1385       javaVFrame *frame = vfst.asJavaVFrame();
1386       StackValueCollection* locals = frame->locals();
1387       StackValue* head_sv = locals->at(loc); // java/lang/ScopedValue$Snapshot
1388       Handle result = head_sv->get_obj();
1389       assert(!head_sv->obj_is_scalar_replaced(), "found scalar-replaced object");
1390       if (result() != nullptr) {
1391         return JNIHandles::make_local(THREAD, result());
1392       }
1393     }
1394   }
1395 
1396   return nullptr;
1397 JVM_END
1398 
1399 JVM_ENTRY_PROF(jboolean, JVM_IsArrayClass, JVM_IsArrayClass(JNIEnv *env, jclass cls))
1400   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
1401   return (k != nullptr) && k->is_array_klass() ? true : false;
1402 JVM_END
1403 
1404 
1405 JVM_ENTRY_PROF(jboolean, JVM_IsPrimitiveClass, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls))
1406   oop mirror = JNIHandles::resolve_non_null(cls);
1407   return (jboolean) java_lang_Class::is_primitive(mirror);
1408 JVM_END
1409 
1410 
1411 JVM_ENTRY_PROF(jint, JVM_GetClassModifiers, JVM_GetClassModifiers(JNIEnv *env, jclass cls))
1412   oop mirror = JNIHandles::resolve_non_null(cls);
1413   if (java_lang_Class::is_primitive(mirror)) {
1414     // Primitive type
1415     return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC;
1416   }
1417 
1418   Klass* k = java_lang_Class::as_Klass(mirror);
1419   debug_only(int computed_modifiers = k->compute_modifier_flags());
1420   assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK");
1421   return k->modifier_flags();
1422 JVM_END
1423 
1424 
1425 // Inner class reflection ///////////////////////////////////////////////////////////////////////////////
1426 
1427 JVM_ENTRY_PROF(jobjectArray, JVM_GetDeclaredClasses, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass))
1428   JvmtiVMObjectAllocEventCollector oam;
1429   // ofClass is a reference to a java_lang_Class object. The mirror object
1430   // of an InstanceKlass
1431   oop ofMirror = JNIHandles::resolve_non_null(ofClass);
1432   if (java_lang_Class::is_primitive(ofMirror) ||
1433       ! java_lang_Class::as_Klass(ofMirror)->is_instance_klass()) {
1434     oop result = oopFactory::new_objArray(vmClasses::Class_klass(), 0, CHECK_NULL);
1435     return (jobjectArray)JNIHandles::make_local(THREAD, result);
1436   }
1437 
1438   InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(ofMirror));
1439   InnerClassesIterator iter(k);
1440 
1441   if (iter.length() == 0) {
1442     // Neither an inner nor outer class
1443     oop result = oopFactory::new_objArray(vmClasses::Class_klass(), 0, CHECK_NULL);
1444     return (jobjectArray)JNIHandles::make_local(THREAD, result);
1445   }
1446 
1447   // find inner class info

1473            result->obj_at_put(members, inner_klass->java_mirror());
1474            members++;
1475         }
1476       }
1477     }
1478   }
1479 
1480   if (members != length) {
1481     // Return array of right length
1482     objArrayOop res = oopFactory::new_objArray(vmClasses::Class_klass(), members, CHECK_NULL);
1483     for(int i = 0; i < members; i++) {
1484       res->obj_at_put(i, result->obj_at(i));
1485     }
1486     return (jobjectArray)JNIHandles::make_local(THREAD, res);
1487   }
1488 
1489   return (jobjectArray)JNIHandles::make_local(THREAD, result());
1490 JVM_END
1491 
1492 
1493 JVM_ENTRY_PROF(jclass, JVM_GetDeclaringClass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass))
1494 {
1495   // ofClass is a reference to a java_lang_Class object.
1496   oop ofMirror = JNIHandles::resolve_non_null(ofClass);
1497   if (java_lang_Class::is_primitive(ofMirror)) {
1498     return nullptr;
1499   }
1500   Klass* klass = java_lang_Class::as_Klass(ofMirror);
1501   if (!klass->is_instance_klass()) {
1502     return nullptr;
1503   }
1504 
1505   bool inner_is_member = false;
1506   Klass* outer_klass
1507     = InstanceKlass::cast(klass)->compute_enclosing_class(&inner_is_member, CHECK_NULL);
1508   if (outer_klass == nullptr)  return nullptr;  // already a top-level class
1509   if (!inner_is_member)  return nullptr;     // a hidden class (inside a method)
1510   return (jclass) JNIHandles::make_local(THREAD, outer_klass->java_mirror());
1511 }
1512 JVM_END
1513 
1514 JVM_ENTRY_PROF(jstring, JVM_GetSimpleBinaryName, JVM_GetSimpleBinaryName(JNIEnv *env, jclass cls))
1515 {
1516   oop mirror = JNIHandles::resolve_non_null(cls);
1517   if (java_lang_Class::is_primitive(mirror)) {
1518     return nullptr;
1519   }
1520   Klass* klass = java_lang_Class::as_Klass(mirror);
1521   if (!klass->is_instance_klass()) {
1522     return nullptr;
1523   }
1524   InstanceKlass* k = InstanceKlass::cast(klass);
1525   int ooff = 0, noff = 0;
1526   if (k->find_inner_classes_attr(&ooff, &noff, THREAD)) {
1527     if (noff != 0) {
1528       constantPoolHandle i_cp(thread, k->constants());
1529       Symbol* name = i_cp->symbol_at(noff);
1530       Handle str = java_lang_String::create_from_symbol(name, CHECK_NULL);
1531       return (jstring) JNIHandles::make_local(THREAD, str());
1532     }
1533   }
1534   return nullptr;
1535 }
1536 JVM_END
1537 
1538 JVM_ENTRY_PROF(jstring, JVM_GetClassSignature, JVM_GetClassSignature(JNIEnv *env, jclass cls))
1539   assert (cls != nullptr, "illegal class");
1540   JvmtiVMObjectAllocEventCollector oam;
1541   ResourceMark rm(THREAD);
1542   oop mirror = JNIHandles::resolve_non_null(cls);
1543   // Return null for arrays and primitives
1544   if (!java_lang_Class::is_primitive(mirror)) {
1545     Klass* k = java_lang_Class::as_Klass(mirror);
1546     if (k->is_instance_klass()) {
1547       Symbol* sym = InstanceKlass::cast(k)->generic_signature();
1548       if (sym == nullptr) return nullptr;
1549       Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL);
1550       return (jstring) JNIHandles::make_local(THREAD, str());
1551     }
1552   }
1553   return nullptr;
1554 JVM_END
1555 
1556 
1557 JVM_ENTRY_PROF(jbyteArray, JVM_GetClassAnnotations, JVM_GetClassAnnotations(JNIEnv *env, jclass cls))
1558   assert (cls != nullptr, "illegal class");
1559   oop mirror = JNIHandles::resolve_non_null(cls);
1560   // Return null for arrays and primitives
1561   if (!java_lang_Class::is_primitive(mirror)) {
1562     Klass* k = java_lang_Class::as_Klass(mirror);
1563     if (k->is_instance_klass()) {
1564       typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL);
1565       return (jbyteArray) JNIHandles::make_local(THREAD, a);
1566     }
1567   }
1568   return nullptr;
1569 JVM_END
1570 
1571 
1572 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd) {
1573   // some of this code was adapted from from jni_FromReflectedField
1574 
1575   oop reflected = JNIHandles::resolve_non_null(field);
1576   oop mirror    = java_lang_reflect_Field::clazz(reflected);
1577   Klass* k    = java_lang_Class::as_Klass(mirror);

1606   int slot      = 0;
1607 
1608   if (reflected->klass() == vmClasses::reflect_Constructor_klass()) {
1609     mirror = java_lang_reflect_Constructor::clazz(reflected);
1610     slot   = java_lang_reflect_Constructor::slot(reflected);
1611   } else {
1612     assert(reflected->klass() == vmClasses::reflect_Method_klass(),
1613            "wrong type");
1614     mirror = java_lang_reflect_Method::clazz(reflected);
1615     slot   = java_lang_reflect_Method::slot(reflected);
1616   }
1617   Klass* k = java_lang_Class::as_Klass(mirror);
1618 
1619   Method* m = InstanceKlass::cast(k)->method_with_idnum(slot);
1620   assert(m != nullptr, "cannot find method");
1621   return m;  // caller has to deal with null in product mode
1622 }
1623 
1624 /* Type use annotations support (JDK 1.8) */
1625 
1626 JVM_ENTRY_PROF(jbyteArray, JVM_GetClassTypeAnnotations, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls))
1627   assert (cls != nullptr, "illegal class");
1628   ResourceMark rm(THREAD);
1629   // Return null for arrays and primitives
1630   if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) {
1631     Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls));
1632     if (k->is_instance_klass()) {
1633       AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations();
1634       if (type_annotations != nullptr) {
1635         typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL);
1636         return (jbyteArray) JNIHandles::make_local(THREAD, a);
1637       }
1638     }
1639   }
1640   return nullptr;
1641 JVM_END
1642 
1643 JVM_ENTRY_PROF(jbyteArray, JVM_GetMethodTypeAnnotations, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method))
1644   assert (method != nullptr, "illegal method");
1645   // method is a handle to a java.lang.reflect.Method object
1646   Method* m = jvm_get_method_common(method);
1647   if (m == nullptr) {
1648     return nullptr;
1649   }
1650 
1651   AnnotationArray* type_annotations = m->type_annotations();
1652   if (type_annotations != nullptr) {
1653     typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL);
1654     return (jbyteArray) JNIHandles::make_local(THREAD, a);
1655   }
1656 
1657   return nullptr;
1658 JVM_END
1659 
1660 JVM_ENTRY_PROF(jbyteArray, JVM_GetFieldTypeAnnotations, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field))
1661   assert (field != nullptr, "illegal field");
1662   fieldDescriptor fd;
1663   bool gotFd = jvm_get_field_common(field, fd);
1664   if (!gotFd) {
1665     return nullptr;
1666   }
1667 
1668   return (jbyteArray) JNIHandles::make_local(THREAD, Annotations::make_java_array(fd.type_annotations(), THREAD));
1669 JVM_END
1670 
1671 static void bounds_check(const constantPoolHandle& cp, jint index, TRAPS) {
1672   if (!cp->is_within_bounds(index)) {
1673     THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds");
1674   }
1675 }
1676 
1677 JVM_ENTRY_PROF(jobjectArray, JVM_GetMethodParameters, JVM_GetMethodParameters(JNIEnv *env, jobject method))
1678 {
1679   // method is a handle to a java.lang.reflect.Method object
1680   Method* method_ptr = jvm_get_method_common(method);
1681   methodHandle mh (THREAD, method_ptr);
1682   Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method));
1683   const int num_params = mh->method_parameters_length();
1684 
1685   if (num_params < 0) {
1686     // A -1 return value from method_parameters_length means there is no
1687     // parameter data.  Return null to indicate this to the reflection
1688     // API.
1689     assert(num_params == -1, "num_params should be -1 if it is less than zero");
1690     return (jobjectArray)nullptr;
1691   } else {
1692     // Otherwise, we return something up to reflection, even if it is
1693     // a zero-length array.  Why?  Because in some cases this can
1694     // trigger a MalformedParametersException.
1695 
1696     // make sure all the symbols are properly formatted
1697     for (int i = 0; i < num_params; i++) {

1710     objArrayOop result_oop = oopFactory::new_objArray(vmClasses::reflect_Parameter_klass(), num_params, CHECK_NULL);
1711     objArrayHandle result (THREAD, result_oop);
1712 
1713     for (int i = 0; i < num_params; i++) {
1714       MethodParametersElement* params = mh->method_parameters_start();
1715       // For a 0 index, give a null symbol
1716       Symbol* sym = 0 != params[i].name_cp_index ?
1717         mh->constants()->symbol_at(params[i].name_cp_index) : nullptr;
1718       int flags = params[i].flags;
1719       oop param = Reflection::new_parameter(reflected_method, i, sym,
1720                                             flags, CHECK_NULL);
1721       result->obj_at_put(i, param);
1722     }
1723     return (jobjectArray)JNIHandles::make_local(THREAD, result());
1724   }
1725 }
1726 JVM_END
1727 
1728 // New (JDK 1.4) reflection implementation /////////////////////////////////////
1729 
1730 JVM_ENTRY_PROF(jobjectArray, JVM_GetClassDeclaredFields, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly))
1731 {
1732   JvmtiVMObjectAllocEventCollector oam;
1733 
1734   oop ofMirror = JNIHandles::resolve_non_null(ofClass);
1735   // Exclude primitive types and array types
1736   if (java_lang_Class::is_primitive(ofMirror) ||
1737       java_lang_Class::as_Klass(ofMirror)->is_array_klass()) {
1738     // Return empty array
1739     oop res = oopFactory::new_objArray(vmClasses::reflect_Field_klass(), 0, CHECK_NULL);
1740     return (jobjectArray) JNIHandles::make_local(THREAD, res);
1741   }
1742 
1743   InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(ofMirror));
1744   constantPoolHandle cp(THREAD, k->constants());
1745 
1746   // Ensure class is linked
1747   k->link_class(CHECK_NULL);
1748 
1749   // Allocate result
1750   int num_fields;

1761   objArrayOop r = oopFactory::new_objArray(vmClasses::reflect_Field_klass(), num_fields, CHECK_NULL);
1762   objArrayHandle result (THREAD, r);
1763 
1764   int out_idx = 0;
1765   fieldDescriptor fd;
1766   for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
1767     if (!publicOnly || fs.access_flags().is_public()) {
1768       fd.reinitialize(k, fs.index());
1769       oop field = Reflection::new_field(&fd, CHECK_NULL);
1770       result->obj_at_put(out_idx, field);
1771       ++out_idx;
1772     }
1773   }
1774   assert(out_idx == num_fields, "just checking");
1775   return (jobjectArray) JNIHandles::make_local(THREAD, result());
1776 }
1777 JVM_END
1778 
1779 // A class is a record if and only if it is final and a direct subclass of
1780 // java.lang.Record and has a Record attribute; otherwise, it is not a record.
1781 JVM_ENTRY_PROF(jboolean, JVM_IsRecord, JVM_IsRecord(JNIEnv *env, jclass cls))
1782 {
1783   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
1784   if (k != nullptr && k->is_instance_klass()) {
1785     InstanceKlass* ik = InstanceKlass::cast(k);
1786     return ik->is_record();
1787   } else {
1788     return false;
1789   }
1790 }
1791 JVM_END
1792 
1793 // Returns an array containing the components of the Record attribute,
1794 // or null if the attribute is not present.
1795 //
1796 // Note that this function returns the components of the Record attribute
1797 // even if the class is not a record.
1798 JVM_ENTRY_PROF(jobjectArray, JVM_GetRecordComponents, JVM_GetRecordComponents(JNIEnv* env, jclass ofClass))
1799 {
1800   Klass* c = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass));
1801   assert(c->is_instance_klass(), "must be");
1802   InstanceKlass* ik = InstanceKlass::cast(c);
1803 
1804   Array<RecordComponent*>* components = ik->record_components();
1805   if (components != nullptr) {
1806     JvmtiVMObjectAllocEventCollector oam;
1807     constantPoolHandle cp(THREAD, ik->constants());
1808     int length = components->length();
1809     assert(length >= 0, "unexpected record_components length");
1810     objArrayOop record_components =
1811       oopFactory::new_objArray(vmClasses::RecordComponent_klass(), length, CHECK_NULL);
1812     objArrayHandle components_h (THREAD, record_components);
1813 
1814     for (int x = 0; x < length; x++) {
1815       RecordComponent* component = components->at(x);
1816       assert(component != nullptr, "unexpected null record component");
1817       oop component_oop = java_lang_reflect_RecordComponent::create(ik, component, CHECK_NULL);
1818       components_h->obj_at_put(x, component_oop);

1885   for (int i = 0; i < num_methods; i++) {
1886     methodHandle method(THREAD, k->method_with_idnum(idnums->at(i)));
1887     if (method.is_null()) {
1888       // Method may have been deleted and seems this API can handle null
1889       // Otherwise should probably put a method that throws NSME
1890       result->obj_at_put(i, nullptr);
1891     } else {
1892       oop m;
1893       if (want_constructor) {
1894         m = Reflection::new_constructor(method, CHECK_NULL);
1895       } else {
1896         m = Reflection::new_method(method, false, CHECK_NULL);
1897       }
1898       result->obj_at_put(i, m);
1899     }
1900   }
1901 
1902   return (jobjectArray) JNIHandles::make_local(THREAD, result());
1903 }
1904 
1905 JVM_ENTRY_PROF(jobjectArray, JVM_GetClassDeclaredMethods, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly))
1906 {
1907   return get_class_declared_methods_helper(env, ofClass, publicOnly,
1908                                            /*want_constructor*/ false,
1909                                            vmClasses::reflect_Method_klass(), THREAD);
1910 }
1911 JVM_END
1912 
1913 JVM_ENTRY_PROF(jobjectArray, JVM_GetClassDeclaredConstructors, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly))
1914 {
1915   return get_class_declared_methods_helper(env, ofClass, publicOnly,
1916                                            /*want_constructor*/ true,
1917                                            vmClasses::reflect_Constructor_klass(), THREAD);
1918 }
1919 JVM_END
1920 
1921 JVM_ENTRY_PROF(jint, JVM_GetClassAccessFlags, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls))
1922 {
1923   oop mirror = JNIHandles::resolve_non_null(cls);
1924   if (java_lang_Class::is_primitive(mirror)) {
1925     // Primitive type
1926     return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC;
1927   }
1928 
1929   Klass* k = java_lang_Class::as_Klass(mirror);
1930   return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS;
1931 }
1932 JVM_END
1933 
1934 JVM_ENTRY_PROF(jboolean, JVM_AreNestMates, JVM_AreNestMates(JNIEnv *env, jclass current, jclass member))
1935 {
1936   Klass* c = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(current));
1937   assert(c->is_instance_klass(), "must be");
1938   InstanceKlass* ck = InstanceKlass::cast(c);
1939   Klass* m = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(member));
1940   assert(m->is_instance_klass(), "must be");
1941   InstanceKlass* mk = InstanceKlass::cast(m);
1942   return ck->has_nestmate_access_to(mk, THREAD);
1943 }
1944 JVM_END
1945 
1946 JVM_ENTRY_PROF(jclass, JVM_GetNestHost, JVM_GetNestHost(JNIEnv* env, jclass current))
1947 {
1948   // current is not a primitive or array class
1949   Klass* c = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(current));
1950   assert(c->is_instance_klass(), "must be");
1951   InstanceKlass* ck = InstanceKlass::cast(c);
1952   InstanceKlass* host = ck->nest_host(THREAD);
1953   return (jclass) (host == nullptr ? nullptr :
1954                    JNIHandles::make_local(THREAD, host->java_mirror()));
1955 }
1956 JVM_END
1957 
1958 JVM_ENTRY_PROF(jobjectArray, JVM_GetNestMembers, JVM_GetNestMembers(JNIEnv* env, jclass current))
1959 {
1960   // current is not a primitive or array class
1961   ResourceMark rm(THREAD);
1962   Klass* c = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(current));
1963   assert(c->is_instance_klass(), "must be");
1964   InstanceKlass* ck = InstanceKlass::cast(c);
1965   InstanceKlass* host = ck->nest_host(THREAD);
1966 
1967   log_trace(class, nestmates)("Calling GetNestMembers for type %s with nest-host %s",
1968                               ck->external_name(), host->external_name());
1969   {
1970     JvmtiVMObjectAllocEventCollector oam;
1971     Array<u2>* members = host->nest_members();
1972     int length = members == nullptr ? 0 : members->length();
1973 
1974     log_trace(class, nestmates)(" - host has %d listed nest members", length);
1975 
1976     // nest host is first in the array so make it one bigger
1977     objArrayOop r = oopFactory::new_objArray(vmClasses::Class_klass(),
1978                                              length + 1, CHECK_NULL);

2018         log_trace(class, nestmates)(" - compacting array from length %d to %d",
2019                                     length + 1, count + 1);
2020 
2021         objArrayOop r2 = oopFactory::new_objArray(vmClasses::Class_klass(),
2022                                                   count + 1, CHECK_NULL);
2023         objArrayHandle result2(THREAD, r2);
2024         for (int i = 0; i < count + 1; i++) {
2025           result2->obj_at_put(i, result->obj_at(i));
2026         }
2027         return (jobjectArray)JNIHandles::make_local(THREAD, result2());
2028       }
2029     }
2030     else {
2031       assert(host == ck || ck->is_hidden(), "must be singleton nest or dynamic nestmate");
2032     }
2033     return (jobjectArray)JNIHandles::make_local(THREAD, result());
2034   }
2035 }
2036 JVM_END
2037 
2038 JVM_ENTRY_PROF(jobjectArray, JVM_GetPermittedSubclasses, JVM_GetPermittedSubclasses(JNIEnv* env, jclass current))
2039 {
2040   oop mirror = JNIHandles::resolve_non_null(current);
2041   assert(!java_lang_Class::is_primitive(mirror), "should not be");
2042   Klass* c = java_lang_Class::as_Klass(mirror);
2043   assert(c->is_instance_klass(), "must be");
2044   InstanceKlass* ik = InstanceKlass::cast(c);
2045   ResourceMark rm(THREAD);
2046   log_trace(class, sealed)("Calling GetPermittedSubclasses for %s type %s",
2047                            ik->is_sealed() ? "sealed" : "non-sealed", ik->external_name());
2048   if (ik->is_sealed()) {
2049     JvmtiVMObjectAllocEventCollector oam;
2050     Array<u2>* subclasses = ik->permitted_subclasses();
2051     int length = subclasses->length();
2052 
2053     log_trace(class, sealed)(" - sealed class has %d permitted subclasses", length);
2054 
2055     objArrayOop r = oopFactory::new_objArray(vmClasses::Class_klass(),
2056                                              length, CHECK_NULL);
2057     objArrayHandle result(THREAD, r);
2058     int count = 0;

2081     }
2082     if (count < length) {
2083       // we had invalid entries so we need to compact the array
2084       objArrayOop r2 = oopFactory::new_objArray(vmClasses::Class_klass(),
2085                                                 count, CHECK_NULL);
2086       objArrayHandle result2(THREAD, r2);
2087       for (int i = 0; i < count; i++) {
2088         result2->obj_at_put(i, result->obj_at(i));
2089       }
2090       return (jobjectArray)JNIHandles::make_local(THREAD, result2());
2091     }
2092     return (jobjectArray)JNIHandles::make_local(THREAD, result());
2093   } else {
2094     return nullptr;
2095   }
2096 }
2097 JVM_END
2098 
2099 // Constant pool access //////////////////////////////////////////////////////////
2100 
2101 JVM_ENTRY_PROF(jobject, JVM_GetClassConstantPool, JVM_GetClassConstantPool(JNIEnv *env, jclass cls))
2102 {
2103   JvmtiVMObjectAllocEventCollector oam;
2104   oop mirror = JNIHandles::resolve_non_null(cls);
2105   // Return null for primitives and arrays
2106   if (!java_lang_Class::is_primitive(mirror)) {
2107     Klass* k = java_lang_Class::as_Klass(mirror);
2108     if (k->is_instance_klass()) {
2109       InstanceKlass* k_h = InstanceKlass::cast(k);
2110       Handle jcp = reflect_ConstantPool::create(CHECK_NULL);
2111       reflect_ConstantPool::set_cp(jcp(), k_h->constants());
2112       return JNIHandles::make_local(THREAD, jcp());
2113     }
2114   }
2115   return nullptr;
2116 }
2117 JVM_END
2118 
2119 
2120 JVM_ENTRY_PROF(jint, JVM_ConstantPoolGetSize, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused))
2121 {
2122   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2123   return cp->length();
2124 }
2125 JVM_END
2126 
2127 
2128 JVM_ENTRY_PROF(jclass, JVM_ConstantPoolGetClassAt, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2129 {
2130   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2131   bounds_check(cp, index, CHECK_NULL);
2132   constantTag tag = cp->tag_at(index);
2133   if (!tag.is_klass() && !tag.is_unresolved_klass()) {
2134     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2135   }
2136   Klass* k = cp->klass_at(index, CHECK_NULL);
2137   return (jclass) JNIHandles::make_local(THREAD, k->java_mirror());
2138 }
2139 JVM_END
2140 
2141 JVM_ENTRY_PROF(jclass, JVM_ConstantPoolGetClassAtIfLoaded, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index))
2142 {
2143   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2144   bounds_check(cp, index, CHECK_NULL);
2145   constantTag tag = cp->tag_at(index);
2146   if (!tag.is_klass() && !tag.is_unresolved_klass()) {
2147     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2148   }
2149   Klass* k = ConstantPool::klass_at_if_loaded(cp, index);
2150   if (k == nullptr) return nullptr;
2151   return (jclass) JNIHandles::make_local(THREAD, k->java_mirror());
2152 }
2153 JVM_END
2154 
2155 static jobject get_method_at_helper(const constantPoolHandle& cp, jint index, bool force_resolution, TRAPS) {
2156   constantTag tag = cp->tag_at(index);
2157   if (!tag.is_method() && !tag.is_interface_method()) {
2158     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2159   }
2160   int klass_ref  = cp->uncached_klass_ref_index_at(index);
2161   Klass* k_o;

2165     k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref);
2166     if (k_o == nullptr) return nullptr;
2167   }
2168   InstanceKlass* k = InstanceKlass::cast(k_o);
2169   Symbol* name = cp->uncached_name_ref_at(index);
2170   Symbol* sig  = cp->uncached_signature_ref_at(index);
2171   methodHandle m (THREAD, k->find_method(name, sig));
2172   if (m.is_null()) {
2173     THROW_MSG_NULL(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class");
2174   }
2175   oop method;
2176   if (m->is_object_initializer()) {
2177     method = Reflection::new_constructor(m, CHECK_NULL);
2178   } else {
2179     // new_method accepts <clinit> as Method here
2180     method = Reflection::new_method(m, true, CHECK_NULL);
2181   }
2182   return JNIHandles::make_local(THREAD, method);
2183 }
2184 
2185 JVM_ENTRY_PROF(jobject, JVM_ConstantPoolGetMethodAt, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2186 {
2187   JvmtiVMObjectAllocEventCollector oam;
2188   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2189   bounds_check(cp, index, CHECK_NULL);
2190   jobject res = get_method_at_helper(cp, index, true, CHECK_NULL);
2191   return res;
2192 }
2193 JVM_END
2194 
2195 JVM_ENTRY_PROF(jobject, JVM_ConstantPoolGetMethodAtIfLoaded, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index))
2196 {
2197   JvmtiVMObjectAllocEventCollector oam;
2198   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2199   bounds_check(cp, index, CHECK_NULL);
2200   jobject res = get_method_at_helper(cp, index, false, CHECK_NULL);
2201   return res;
2202 }
2203 JVM_END
2204 
2205 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) {
2206   constantTag tag = cp->tag_at(index);
2207   if (!tag.is_field()) {
2208     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2209   }
2210   int klass_ref  = cp->uncached_klass_ref_index_at(index);
2211   Klass* k_o;
2212   if (force_resolution) {
2213     k_o = cp->klass_at(klass_ref, CHECK_NULL);
2214   } else {
2215     k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref);
2216     if (k_o == nullptr) return nullptr;
2217   }
2218   InstanceKlass* k = InstanceKlass::cast(k_o);
2219   Symbol* name = cp->uncached_name_ref_at(index);
2220   Symbol* sig  = cp->uncached_signature_ref_at(index);
2221   fieldDescriptor fd;
2222   Klass* target_klass = k->find_field(name, sig, &fd);
2223   if (target_klass == nullptr) {
2224     THROW_MSG_NULL(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class");
2225   }
2226   oop field = Reflection::new_field(&fd, CHECK_NULL);
2227   return JNIHandles::make_local(THREAD, field);
2228 }
2229 
2230 JVM_ENTRY_PROF(jobject, JVM_ConstantPoolGetFieldAt, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index))
2231 {
2232   JvmtiVMObjectAllocEventCollector oam;
2233   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2234   bounds_check(cp, index, CHECK_NULL);
2235   jobject res = get_field_at_helper(cp, index, true, CHECK_NULL);
2236   return res;
2237 }
2238 JVM_END
2239 
2240 JVM_ENTRY_PROF(jobject, JVM_ConstantPoolGetFieldAtIfLoaded, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index))
2241 {
2242   JvmtiVMObjectAllocEventCollector oam;
2243   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2244   bounds_check(cp, index, CHECK_NULL);
2245   jobject res = get_field_at_helper(cp, index, false, CHECK_NULL);
2246   return res;
2247 }
2248 JVM_END
2249 
2250 JVM_ENTRY_PROF(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2251 {
2252   JvmtiVMObjectAllocEventCollector oam;
2253   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2254   bounds_check(cp, index, CHECK_NULL);
2255   constantTag tag = cp->tag_at(index);
2256   if (!tag.is_field_or_method()) {
2257     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2258   }
2259   int klass_ref = cp->uncached_klass_ref_index_at(index);
2260   Symbol*  klass_name  = cp->klass_name_at(klass_ref);
2261   Symbol*  member_name = cp->uncached_name_ref_at(index);
2262   Symbol*  member_sig  = cp->uncached_signature_ref_at(index);
2263   objArrayOop  dest_o = oopFactory::new_objArray(vmClasses::String_klass(), 3, CHECK_NULL);
2264   objArrayHandle dest(THREAD, dest_o);
2265   Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL);
2266   dest->obj_at_put(0, str());
2267   str = java_lang_String::create_from_symbol(member_name, CHECK_NULL);
2268   dest->obj_at_put(1, str());
2269   str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL);
2270   dest->obj_at_put(2, str());
2271   return (jobjectArray) JNIHandles::make_local(THREAD, dest());
2272 }
2273 JVM_END
2274 
2275 JVM_ENTRY_PROF(jint, JVM_ConstantPoolGetClassRefIndexAt, JVM_ConstantPoolGetClassRefIndexAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2276 {
2277   JvmtiVMObjectAllocEventCollector oam;
2278   constantPoolHandle cp(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2279   bounds_check(cp, index, CHECK_0);
2280   constantTag tag = cp->tag_at(index);
2281   if (!tag.is_field_or_method()) {
2282     THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2283   }
2284   return (jint) cp->uncached_klass_ref_index_at(index);
2285 }
2286 JVM_END
2287 
2288 JVM_ENTRY_PROF(jint, JVM_ConstantPoolGetNameAndTypeRefIndexAt, JVM_ConstantPoolGetNameAndTypeRefIndexAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2289 {
2290   JvmtiVMObjectAllocEventCollector oam;
2291   constantPoolHandle cp(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2292   bounds_check(cp, index, CHECK_0);
2293   constantTag tag = cp->tag_at(index);
2294   if (!tag.is_invoke_dynamic() && !tag.is_field_or_method()) {
2295     THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2296   }
2297   return (jint) cp->uncached_name_and_type_ref_index_at(index);
2298 }
2299 JVM_END
2300 
2301 JVM_ENTRY_PROF(jobjectArray, JVM_ConstantPoolGetNameAndTypeRefInfoAt, JVM_ConstantPoolGetNameAndTypeRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2302 {
2303   JvmtiVMObjectAllocEventCollector oam;
2304   constantPoolHandle cp(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2305   bounds_check(cp, index, CHECK_NULL);
2306   constantTag tag = cp->tag_at(index);
2307   if (!tag.is_name_and_type()) {
2308     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2309   }
2310   Symbol* member_name = cp->symbol_at(cp->name_ref_index_at(index));
2311   Symbol* member_sig = cp->symbol_at(cp->signature_ref_index_at(index));
2312   objArrayOop dest_o = oopFactory::new_objArray(vmClasses::String_klass(), 2, CHECK_NULL);
2313   objArrayHandle dest(THREAD, dest_o);
2314   Handle str = java_lang_String::create_from_symbol(member_name, CHECK_NULL);
2315   dest->obj_at_put(0, str());
2316   str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL);
2317   dest->obj_at_put(1, str());
2318   return (jobjectArray) JNIHandles::make_local(THREAD, dest());
2319 }
2320 JVM_END
2321 
2322 JVM_ENTRY_PROF(jint, JVM_ConstantPoolGetIntAt, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2323 {
2324   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2325   bounds_check(cp, index, CHECK_0);
2326   constantTag tag = cp->tag_at(index);
2327   if (!tag.is_int()) {
2328     THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2329   }
2330   return cp->int_at(index);
2331 }
2332 JVM_END
2333 
2334 JVM_ENTRY_PROF(jlong, JVM_ConstantPoolGetLongAt, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2335 {
2336   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2337   bounds_check(cp, index, CHECK_(0L));
2338   constantTag tag = cp->tag_at(index);
2339   if (!tag.is_long()) {
2340     THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2341   }
2342   return cp->long_at(index);
2343 }
2344 JVM_END
2345 
2346 JVM_ENTRY_PROF(jfloat, JVM_ConstantPoolGetFloatAt, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2347 {
2348   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2349   bounds_check(cp, index, CHECK_(0.0f));
2350   constantTag tag = cp->tag_at(index);
2351   if (!tag.is_float()) {
2352     THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2353   }
2354   return cp->float_at(index);
2355 }
2356 JVM_END
2357 
2358 JVM_ENTRY_PROF(jdouble, JVM_ConstantPoolGetDoubleAt, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2359 {
2360   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2361   bounds_check(cp, index, CHECK_(0.0));
2362   constantTag tag = cp->tag_at(index);
2363   if (!tag.is_double()) {
2364     THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2365   }
2366   return cp->double_at(index);
2367 }
2368 JVM_END
2369 
2370 JVM_ENTRY_PROF(jstring, JVM_ConstantPoolGetStringAt, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2371 {
2372   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2373   bounds_check(cp, index, CHECK_NULL);
2374   constantTag tag = cp->tag_at(index);
2375   if (!tag.is_string()) {
2376     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2377   }
2378   oop str = cp->string_at(index, CHECK_NULL);
2379   return (jstring) JNIHandles::make_local(THREAD, str);
2380 }
2381 JVM_END
2382 
2383 JVM_ENTRY_PROF(jstring, JVM_ConstantPoolGetUTF8At, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index))
2384 {
2385   JvmtiVMObjectAllocEventCollector oam;
2386   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2387   bounds_check(cp, index, CHECK_NULL);
2388   constantTag tag = cp->tag_at(index);
2389   if (!tag.is_symbol()) {
2390     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
2391   }
2392   Symbol* sym = cp->symbol_at(index);
2393   Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL);
2394   return (jstring) JNIHandles::make_local(THREAD, str());
2395 }
2396 JVM_END
2397 
2398 JVM_ENTRY_PROF(jbyte, JVM_ConstantPoolGetTagAt, JVM_ConstantPoolGetTagAt(JNIEnv *env, jobject obj, jobject unused, jint index))
2399 {
2400   constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
2401   bounds_check(cp, index, CHECK_0);
2402   constantTag tag = cp->tag_at(index);
2403   jbyte result = tag.value();
2404   // If returned tag values are not from the JVM spec, e.g. tags from 100 to 105,
2405   // they are changed to the corresponding tags from the JVM spec, so that java code in
2406   // sun.reflect.ConstantPool will return only tags from the JVM spec, not internal ones.
2407   if (tag.is_klass_or_reference()) {
2408       result = JVM_CONSTANT_Class;
2409   } else if (tag.is_string_index()) {
2410       result = JVM_CONSTANT_String;
2411   } else if (tag.is_method_type_in_error()) {
2412       result = JVM_CONSTANT_MethodType;
2413   } else if (tag.is_method_handle_in_error()) {
2414       result = JVM_CONSTANT_MethodHandle;
2415   } else if (tag.is_dynamic_constant_in_error()) {
2416       result = JVM_CONSTANT_Dynamic;
2417   }
2418   return result;
2419 }
2420 JVM_END
2421 
2422 // Assertion support. //////////////////////////////////////////////////////////
2423 
2424 JVM_ENTRY_PROF(jboolean, JVM_DesiredAssertionStatus, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls))
2425   assert(cls != nullptr, "bad class");
2426 
2427   oop r = JNIHandles::resolve(cls);
2428   assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed");
2429   if (java_lang_Class::is_primitive(r)) return false;
2430 
2431   Klass* k = java_lang_Class::as_Klass(r);
2432   assert(k->is_instance_klass(), "must be an instance klass");
2433   if (!k->is_instance_klass()) return false;
2434 
2435   ResourceMark rm(THREAD);
2436   const char* name = k->name()->as_C_string();
2437   bool system_class = k->class_loader() == nullptr;
2438   return JavaAssertions::enabled(name, system_class);
2439 
2440 JVM_END
2441 
2442 
2443 // Return a new AssertionStatusDirectives object with the fields filled in with
2444 // command-line assertion arguments (i.e., -ea, -da).
2445 JVM_ENTRY_PROF(jobject, JVM_AssertionStatusDirectives, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused))
2446   JvmtiVMObjectAllocEventCollector oam;
2447   oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL);
2448   return JNIHandles::make_local(THREAD, asd);
2449 JVM_END
2450 
2451 // Verification ////////////////////////////////////////////////////////////////////////////////
2452 
2453 // Reflection for the verifier /////////////////////////////////////////////////////////////////
2454 
2455 // RedefineClasses support: bug 6214132 caused verification to fail.
2456 // All functions from this section should call the jvmtiThreadSate function:
2457 //   Klass* class_to_verify_considering_redefinition(Klass* klass).
2458 // The function returns a Klass* of the _scratch_class if the verifier
2459 // was invoked in the middle of the class redefinition.
2460 // Otherwise it returns its argument value which is the _the_class Klass*.
2461 // Please, refer to the description in the jvmtiThreadSate.hpp.
2462 
2463 JVM_ENTRY_PROF(const char*, JVM_GetClassNameUTF, JVM_GetClassNameUTF(JNIEnv *env, jclass cls))
2464   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2465   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2466   return k->name()->as_utf8();
2467 JVM_END
2468 
2469 
2470 JVM_ENTRY_PROF(void, JVM_GetClassCPTypes, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types))
2471   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2472   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2473   // types will have length zero if this is not an InstanceKlass
2474   // (length is determined by call to JVM_GetClassCPEntriesCount)
2475   if (k->is_instance_klass()) {
2476     ConstantPool* cp = InstanceKlass::cast(k)->constants();
2477     for (int index = cp->length() - 1; index >= 0; index--) {
2478       constantTag tag = cp->tag_at(index);
2479       types[index] = (tag.is_unresolved_klass()) ? (unsigned char) JVM_CONSTANT_Class : tag.value();
2480     }
2481   }
2482 JVM_END
2483 
2484 
2485 JVM_ENTRY_PROF(jint, JVM_GetClassCPEntriesCount, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls))
2486   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2487   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2488   return (!k->is_instance_klass()) ? 0 : InstanceKlass::cast(k)->constants()->length();
2489 JVM_END
2490 
2491 
2492 JVM_ENTRY_PROF(jint, JVM_GetClassFieldsCount, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls))
2493   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2494   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2495   return (!k->is_instance_klass()) ? 0 : InstanceKlass::cast(k)->java_fields_count();
2496 JVM_END
2497 
2498 
2499 JVM_ENTRY_PROF(jint, JVM_GetClassMethodsCount, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls))
2500   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2501   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2502   return (!k->is_instance_klass()) ? 0 : InstanceKlass::cast(k)->methods()->length();
2503 JVM_END
2504 
2505 
2506 // The following methods, used for the verifier, are never called with
2507 // array klasses, so a direct cast to InstanceKlass is safe.
2508 // Typically, these methods are called in a loop with bounds determined
2509 // by the results of JVM_GetClass{Fields,Methods}Count, which return
2510 // zero for arrays.
2511 JVM_ENTRY_PROF(void, JVM_GetMethodIxExceptionIndexes, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions))
2512   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2513   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2514   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2515   int length = method->checked_exceptions_length();
2516   if (length > 0) {
2517     CheckedExceptionElement* table= method->checked_exceptions_start();
2518     for (int i = 0; i < length; i++) {
2519       exceptions[i] = table[i].class_cp_index;
2520     }
2521   }
2522 JVM_END
2523 
2524 
2525 JVM_ENTRY_PROF(jint, JVM_GetMethodIxExceptionsCount, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index))
2526   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2527   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2528   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2529   return method->checked_exceptions_length();
2530 JVM_END
2531 
2532 
2533 JVM_ENTRY_PROF(void, JVM_GetMethodIxByteCode, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code))
2534   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2535   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2536   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2537   memcpy(code, method->code_base(), method->code_size());
2538 JVM_END
2539 
2540 
2541 JVM_ENTRY_PROF(jint, JVM_GetMethodIxByteCodeLength, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index))
2542   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2543   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2544   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2545   return method->code_size();
2546 JVM_END
2547 
2548 
2549 JVM_ENTRY_PROF(void, JVM_GetMethodIxExceptionTableEntry, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry))
2550   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2551   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2552   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2553   ExceptionTable extable(method);
2554   entry->start_pc   = extable.start_pc(entry_index);
2555   entry->end_pc     = extable.end_pc(entry_index);
2556   entry->handler_pc = extable.handler_pc(entry_index);
2557   entry->catchType  = extable.catch_type_index(entry_index);
2558 JVM_END
2559 
2560 
2561 JVM_ENTRY_PROF(jint, JVM_GetMethodIxExceptionTableLength, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index))
2562   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2563   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2564   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2565   return method->exception_table_length();
2566 JVM_END
2567 
2568 
2569 JVM_ENTRY_PROF(jint, JVM_GetMethodIxModifiers, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index))
2570   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2571   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2572   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2573   return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
2574 JVM_END
2575 
2576 
2577 JVM_ENTRY_PROF(jint, JVM_GetFieldIxModifiers, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index))
2578   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2579   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2580   return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS;
2581 JVM_END
2582 
2583 
2584 JVM_ENTRY_PROF(jint, JVM_GetMethodIxLocalsCount, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index))
2585   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2586   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2587   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2588   return method->max_locals();
2589 JVM_END
2590 
2591 
2592 JVM_ENTRY_PROF(jint, JVM_GetMethodIxArgsSize, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index))
2593   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2594   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2595   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2596   return method->size_of_parameters();
2597 JVM_END
2598 
2599 
2600 JVM_ENTRY_PROF(jint, JVM_GetMethodIxMaxStack, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index))
2601   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2602   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2603   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2604   return method->verifier_max_stack();
2605 JVM_END
2606 
2607 
2608 JVM_ENTRY_PROF(jboolean, JVM_IsConstructorIx, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index))
2609   ResourceMark rm(THREAD);
2610   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2611   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2612   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2613   return method->name() == vmSymbols::object_initializer_name();
2614 JVM_END
2615 
2616 
2617 JVM_ENTRY_PROF(jboolean, JVM_IsVMGeneratedMethodIx, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index))
2618   ResourceMark rm(THREAD);
2619   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2620   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2621   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2622   return method->is_overpass();
2623 JVM_END
2624 
2625 JVM_ENTRY_PROF(const char*, JVM_GetMethodIxNameUTF, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index))
2626   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2627   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2628   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2629   return method->name()->as_utf8();
2630 JVM_END
2631 
2632 
2633 JVM_ENTRY_PROF(const char*, JVM_GetMethodIxSignatureUTF, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index))
2634   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2635   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2636   Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
2637   return method->signature()->as_utf8();
2638 JVM_END
2639 
2640 /**
2641  * All of these JVM_GetCP-xxx methods are used by the old verifier to
2642  * read entries in the constant pool.  Since the old verifier always
2643  * works on a copy of the code, it will not see any rewriting that
2644  * may possibly occur in the middle of verification.  So it is important
2645  * that nothing it calls tries to use the cpCache instead of the raw
2646  * constant pool, so we must use cp->uncached_x methods when appropriate.
2647  */
2648 JVM_ENTRY_PROF(const char*, JVM_GetCPFieldNameUTF, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index))
2649   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2650   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2651   ConstantPool* cp = InstanceKlass::cast(k)->constants();
2652   switch (cp->tag_at(cp_index).value()) {
2653     case JVM_CONSTANT_Fieldref:
2654       return cp->uncached_name_ref_at(cp_index)->as_utf8();
2655     default:
2656       fatal("JVM_GetCPFieldNameUTF: illegal constant");
2657   }
2658   ShouldNotReachHere();
2659   return nullptr;
2660 JVM_END
2661 
2662 
2663 JVM_ENTRY_PROF(const char*, JVM_GetCPMethodNameUTF, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index))
2664   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2665   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2666   ConstantPool* cp = InstanceKlass::cast(k)->constants();
2667   switch (cp->tag_at(cp_index).value()) {
2668     case JVM_CONSTANT_InterfaceMethodref:
2669     case JVM_CONSTANT_Methodref:
2670       return cp->uncached_name_ref_at(cp_index)->as_utf8();
2671     default:
2672       fatal("JVM_GetCPMethodNameUTF: illegal constant");
2673   }
2674   ShouldNotReachHere();
2675   return nullptr;
2676 JVM_END
2677 
2678 
2679 JVM_ENTRY_PROF(const char*, JVM_GetCPMethodSignatureUTF, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index))
2680   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2681   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2682   ConstantPool* cp = InstanceKlass::cast(k)->constants();
2683   switch (cp->tag_at(cp_index).value()) {
2684     case JVM_CONSTANT_InterfaceMethodref:
2685     case JVM_CONSTANT_Methodref:
2686       return cp->uncached_signature_ref_at(cp_index)->as_utf8();
2687     default:
2688       fatal("JVM_GetCPMethodSignatureUTF: illegal constant");
2689   }
2690   ShouldNotReachHere();
2691   return nullptr;
2692 JVM_END
2693 
2694 
2695 JVM_ENTRY_PROF(const char*, JVM_GetCPFieldSignatureUTF, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index))
2696   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2697   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2698   ConstantPool* cp = InstanceKlass::cast(k)->constants();
2699   switch (cp->tag_at(cp_index).value()) {
2700     case JVM_CONSTANT_Fieldref:
2701       return cp->uncached_signature_ref_at(cp_index)->as_utf8();
2702     default:
2703       fatal("JVM_GetCPFieldSignatureUTF: illegal constant");
2704   }
2705   ShouldNotReachHere();
2706   return nullptr;
2707 JVM_END
2708 
2709 
2710 JVM_ENTRY_PROF(const char*, JVM_GetCPClassNameUTF, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index))
2711   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2712   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2713   ConstantPool* cp = InstanceKlass::cast(k)->constants();
2714   Symbol* classname = cp->klass_name_at(cp_index);
2715   return classname->as_utf8();
2716 JVM_END
2717 
2718 
2719 JVM_ENTRY_PROF(const char*, JVM_GetCPFieldClassNameUTF, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index))
2720   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2721   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2722   ConstantPool* cp = InstanceKlass::cast(k)->constants();
2723   switch (cp->tag_at(cp_index).value()) {
2724     case JVM_CONSTANT_Fieldref: {
2725       int class_index = cp->uncached_klass_ref_index_at(cp_index);
2726       Symbol* classname = cp->klass_name_at(class_index);
2727       return classname->as_utf8();
2728     }
2729     default:
2730       fatal("JVM_GetCPFieldClassNameUTF: illegal constant");
2731   }
2732   ShouldNotReachHere();
2733   return nullptr;
2734 JVM_END
2735 
2736 
2737 JVM_ENTRY_PROF(const char*, JVM_GetCPMethodClassNameUTF, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index))
2738   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2739   k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2740   ConstantPool* cp = InstanceKlass::cast(k)->constants();
2741   switch (cp->tag_at(cp_index).value()) {
2742     case JVM_CONSTANT_Methodref:
2743     case JVM_CONSTANT_InterfaceMethodref: {
2744       int class_index = cp->uncached_klass_ref_index_at(cp_index);
2745       Symbol* classname = cp->klass_name_at(class_index);
2746       return classname->as_utf8();
2747     }
2748     default:
2749       fatal("JVM_GetCPMethodClassNameUTF: illegal constant");
2750   }
2751   ShouldNotReachHere();
2752   return nullptr;
2753 JVM_END
2754 
2755 
2756 JVM_ENTRY_PROF(jint, JVM_GetCPFieldModifiers, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls))
2757   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2758   Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls));
2759   k        = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2760   k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread);
2761   ConstantPool* cp = InstanceKlass::cast(k)->constants();
2762   ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants();
2763   switch (cp->tag_at(cp_index).value()) {
2764     case JVM_CONSTANT_Fieldref: {
2765       Symbol* name      = cp->uncached_name_ref_at(cp_index);
2766       Symbol* signature = cp->uncached_signature_ref_at(cp_index);
2767       InstanceKlass* ik = InstanceKlass::cast(k_called);
2768       for (JavaFieldStream fs(ik); !fs.done(); fs.next()) {
2769         if (fs.name() == name && fs.signature() == signature) {
2770           return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS;
2771         }
2772       }
2773       return -1;
2774     }
2775     default:
2776       fatal("JVM_GetCPFieldModifiers: illegal constant");
2777   }
2778   ShouldNotReachHere();
2779   return 0;
2780 JVM_END
2781 
2782 
2783 JVM_ENTRY_PROF(jint, JVM_GetCPMethodModifiers, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls))
2784   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2785   Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls));
2786   k        = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
2787   k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread);
2788   ConstantPool* cp = InstanceKlass::cast(k)->constants();
2789   switch (cp->tag_at(cp_index).value()) {
2790     case JVM_CONSTANT_Methodref:
2791     case JVM_CONSTANT_InterfaceMethodref: {
2792       Symbol* name      = cp->uncached_name_ref_at(cp_index);
2793       Symbol* signature = cp->uncached_signature_ref_at(cp_index);
2794       Array<Method*>* methods = InstanceKlass::cast(k_called)->methods();
2795       int methods_count = methods->length();
2796       for (int i = 0; i < methods_count; i++) {
2797         Method* method = methods->at(i);
2798         if (method->name() == name && method->signature() == signature) {
2799             return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
2800         }
2801       }
2802       return -1;
2803     }
2804     default:
2805       fatal("JVM_GetCPMethodModifiers: illegal constant");
2806   }
2807   ShouldNotReachHere();
2808   return 0;
2809 JVM_END
2810 
2811 
2812 // Misc //////////////////////////////////////////////////////////////////////////////////////////////
2813 
2814 JVM_LEAF_PROF(void, JVM_ReleaseUTF, JVM_ReleaseUTF(const char *utf))
2815   // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything
2816 JVM_END
2817 
2818 
2819 JVM_ENTRY_PROF(jboolean, JVM_IsSameClassPackage, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2))
2820   oop class1_mirror = JNIHandles::resolve_non_null(class1);
2821   oop class2_mirror = JNIHandles::resolve_non_null(class2);
2822   Klass* klass1 = java_lang_Class::as_Klass(class1_mirror);
2823   Klass* klass2 = java_lang_Class::as_Klass(class2_mirror);
2824   return (jboolean) Reflection::is_same_class_package(klass1, klass2);
2825 JVM_END
2826 
2827 // Printing support //////////////////////////////////////////////////
2828 extern "C" {
2829 
2830 ATTRIBUTE_PRINTF(3, 0)
2831 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) {
2832   // Reject count values that are negative signed values converted to
2833   // unsigned; see bug 4399518, 4417214
2834   if ((intptr_t)count <= 0) return -1;
2835 
2836   int result = os::vsnprintf(str, count, fmt, args);
2837   if (result > 0 && (size_t)result >= count) {
2838     result = -1;
2839   }

2898 // In most of the JVM thread support functions we need to access the
2899 // thread through a ThreadsListHandle to prevent it from exiting and
2900 // being reclaimed while we try to operate on it. The exceptions to this
2901 // rule are when operating on the current thread, or if the monitor of
2902 // the target java.lang.Thread is locked at the Java level - in both
2903 // cases the target cannot exit.
2904 
2905 static void thread_entry(JavaThread* thread, TRAPS) {
2906   HandleMark hm(THREAD);
2907   Handle obj(THREAD, thread->threadObj());
2908   JavaValue result(T_VOID);
2909   JavaCalls::call_virtual(&result,
2910                           obj,
2911                           vmClasses::Thread_klass(),
2912                           vmSymbols::run_method_name(),
2913                           vmSymbols::void_method_signature(),
2914                           THREAD);
2915 }
2916 
2917 
2918 JVM_ENTRY_PROF(void, JVM_StartThread, JVM_StartThread(JNIEnv* env, jobject jthread))
2919 #if INCLUDE_CDS
2920   if (CDSConfig::allow_only_single_java_thread()) {
2921     // During java -Xshare:dump, if we allow multiple Java threads to
2922     // execute in parallel, symbols and classes may be loaded in
2923     // random orders which will make the resulting CDS archive
2924     // non-deterministic.
2925     //
2926     // Lucikly, during java -Xshare:dump, it's important to run only
2927     // the code in the main Java thread (which is NOT started here) that
2928     // creates the module graph, etc. It's safe to not start the other
2929     // threads which are launched by class static initializers
2930     // (ReferenceHandler, FinalizerThread and CleanerImpl).
2931     if (log_is_enabled(Info, cds)) {
2932       ResourceMark rm;
2933       oop t = JNIHandles::resolve_non_null(jthread);
2934       log_info(cds)("JVM_StartThread() ignored: %s", t->klass()->external_name());
2935     }
2936     return;
2937   }
2938 #endif
2939   JavaThread *native_thread = nullptr;
2940 

2994     log_warning(os, thread)("Failed to start the native thread for java.lang.Thread \"%s\"",
2995                             JavaThread::name_for(JNIHandles::resolve_non_null(jthread)));
2996     // No one should hold a reference to the 'native_thread'.
2997     native_thread->smr_delete();
2998     if (JvmtiExport::should_post_resource_exhausted()) {
2999       JvmtiExport::post_resource_exhausted(
3000         JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS,
3001         os::native_thread_creation_failed_msg());
3002     }
3003     THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(),
3004               os::native_thread_creation_failed_msg());
3005   }
3006 
3007   JFR_ONLY(Jfr::on_java_thread_start(thread, native_thread);)
3008 
3009   Thread::start(native_thread);
3010 
3011 JVM_END
3012 
3013 
3014 JVM_ENTRY_PROF(void, JVM_SetThreadPriority, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio))
3015   ThreadsListHandle tlh(thread);
3016   oop java_thread = nullptr;
3017   JavaThread* receiver = nullptr;
3018   bool is_alive = tlh.cv_internal_thread_to_JavaThread(jthread, &receiver, &java_thread);
3019   java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio);
3020 
3021   if (is_alive) {
3022     // jthread refers to a live JavaThread.
3023     Thread::set_priority(receiver, (ThreadPriority)prio);
3024   }
3025   // Implied else: If the JavaThread hasn't started yet, then the
3026   // priority set in the java.lang.Thread object above will be pushed
3027   // down when it does start.
3028 JVM_END
3029 
3030 
3031 JVM_LEAF_PROF(void, JVM_Yield, JVM_Yield(JNIEnv *env, jclass threadClass))
3032   if (os::dont_yield()) return;
3033   HOTSPOT_THREAD_YIELD();
3034   os::naked_yield();
3035 JVM_END
3036 
3037 JVM_ENTRY_PROF(void, JVM_SleepNanos, JVM_SleepNanos(JNIEnv* env, jclass threadClass, jlong nanos))
3038   if (nanos < 0) {
3039     THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "nanosecond timeout value out of range");
3040   }
3041 
3042   if (thread->is_interrupted(true) && !HAS_PENDING_EXCEPTION) {
3043     THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted");
3044   }
3045 
3046   // Save current thread state and restore it at the end of this block.
3047   // And set new thread state to SLEEPING.
3048   JavaThreadSleepState jtss(thread);
3049 
3050   HOTSPOT_THREAD_SLEEP_BEGIN(nanos / NANOSECS_PER_MILLISEC);
3051 
3052   if (nanos == 0) {
3053     os::naked_yield();
3054   } else {
3055     ThreadState old_state = thread->osthread()->get_state();
3056     thread->osthread()->set_state(SLEEPING);
3057     if (!thread->sleep_nanos(nanos)) { // interrupted
3058       // An asynchronous exception could have been thrown on
3059       // us while we were sleeping. We do not overwrite those.
3060       if (!HAS_PENDING_EXCEPTION) {
3061         HOTSPOT_THREAD_SLEEP_END(1);
3062 
3063         // TODO-FIXME: THROW_MSG returns which means we will not call set_state()
3064         // to properly restore the thread state.  That's likely wrong.
3065         THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted");
3066       }
3067     }
3068     thread->osthread()->set_state(old_state);
3069   }
3070   HOTSPOT_THREAD_SLEEP_END(0);
3071 JVM_END
3072 
3073 JVM_ENTRY_PROF(jobject, JVM_CurrentCarrierThread, JVM_CurrentCarrierThread(JNIEnv* env, jclass threadClass))
3074   oop jthread = thread->threadObj();
3075   assert(jthread != nullptr, "no current carrier thread!");
3076   return JNIHandles::make_local(THREAD, jthread);
3077 JVM_END
3078 
3079 JVM_ENTRY_PROF(jobject, JVM_CurrentThread, JVM_CurrentThread(JNIEnv* env, jclass threadClass))
3080   oop theThread = thread->vthread();
3081   assert(theThread != (oop)nullptr, "no current thread!");
3082   return JNIHandles::make_local(THREAD, theThread);
3083 JVM_END
3084 
3085 JVM_ENTRY_PROF(void, JVM_SetCurrentThread, JVM_SetCurrentThread(JNIEnv* env, jobject thisThread,
3086                                      jobject theThread))
3087   oop threadObj = JNIHandles::resolve(theThread);
3088   thread->set_vthread(threadObj);
3089   JFR_ONLY(Jfr::on_set_current_thread(thread, threadObj);)
3090 JVM_END
3091 
3092 JVM_ENTRY_PROF(jlong, JVM_GetNextThreadIdOffset, JVM_GetNextThreadIdOffset(JNIEnv* env, jclass threadClass))
3093   return ThreadIdentifier::unsafe_offset();
3094 JVM_END
3095 
3096 JVM_ENTRY_PROF(void, JVM_Interrupt, JVM_Interrupt(JNIEnv* env, jobject jthread))
3097   ThreadsListHandle tlh(thread);
3098   JavaThread* receiver = nullptr;
3099   bool is_alive = tlh.cv_internal_thread_to_JavaThread(jthread, &receiver, nullptr);
3100   if (is_alive) {
3101     // jthread refers to a live JavaThread.
3102     receiver->interrupt();
3103   }
3104 JVM_END
3105 
3106 // Return true iff the current thread has locked the object passed in
3107 
3108 JVM_ENTRY_PROF(jboolean, JVM_HoldsLock, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj))
3109   if (obj == nullptr) {
3110     THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE);
3111   }
3112   Handle h_obj(THREAD, JNIHandles::resolve(obj));
3113   return ObjectSynchronizer::current_thread_holds_lock(thread, h_obj);
3114 JVM_END
3115 
3116 JVM_ENTRY_PROF(jobject, JVM_GetStackTrace, JVM_GetStackTrace(JNIEnv *env, jobject jthread))
3117   oop trace = java_lang_Thread::async_get_stack_trace(JNIHandles::resolve(jthread), THREAD);
3118   return JNIHandles::make_local(THREAD, trace);
3119 JVM_END
3120 
3121 
3122 JVM_ENTRY_PROF(void, JVM_SetNativeThreadName, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name))
3123   // We don't use a ThreadsListHandle here because the current thread
3124   // must be alive.
3125   oop java_thread = JNIHandles::resolve_non_null(jthread);
3126   JavaThread* thr = java_lang_Thread::thread(java_thread);
3127   if (thread == thr && !thr->has_attached_via_jni()) {
3128     // Thread naming is only supported for the current thread and
3129     // we don't set the name of an attached thread to avoid stepping
3130     // on other programs.
3131     ResourceMark rm(thread);
3132     const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
3133     os::set_native_thread_name(thread_name);
3134   }
3135 JVM_END
3136 
3137 JVM_ENTRY_PROF(jobject, JVM_ScopedValueCache, JVM_ScopedValueCache(JNIEnv* env, jclass threadClass))
3138   oop theCache = thread->scopedValueCache();
3139   return JNIHandles::make_local(THREAD, theCache);
3140 JVM_END
3141 
3142 JVM_ENTRY_PROF(void, JVM_SetScopedValueCache, JVM_SetScopedValueCache(JNIEnv* env, jclass threadClass,
3143                                        jobject theCache))
3144   arrayOop objs = arrayOop(JNIHandles::resolve(theCache));
3145   thread->set_scopedValueCache(objs);
3146 JVM_END
3147 
3148 // java.lang.SecurityManager ///////////////////////////////////////////////////////////////////////
3149 
3150 JVM_ENTRY_PROF(jobjectArray, JVM_GetClassContext, JVM_GetClassContext(JNIEnv *env))
3151   ResourceMark rm(THREAD);
3152   JvmtiVMObjectAllocEventCollector oam;
3153   vframeStream vfst(thread);
3154 
3155   if (vmClasses::reflect_CallerSensitive_klass() != nullptr) {
3156     // This must only be called from SecurityManager.getClassContext
3157     Method* m = vfst.method();
3158     if (!(m->method_holder() == vmClasses::SecurityManager_klass() &&
3159           m->name()          == vmSymbols::getClassContext_name() &&
3160           m->signature()     == vmSymbols::void_class_array_signature())) {
3161       THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext");
3162     }
3163   }
3164 
3165   // Collect method holders
3166   GrowableArray<Klass*>* klass_array = new GrowableArray<Klass*>();
3167   for (; !vfst.at_end(); vfst.security_next()) {
3168     Method* m = vfst.method();
3169     // Native frames are not returned
3170     if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) {
3171       Klass* holder = m->method_holder();
3172       assert(holder->is_klass(), "just checking");
3173       klass_array->append(holder);
3174     }
3175   }
3176 
3177   // Create result array of type [Ljava/lang/Class;
3178   objArrayOop result = oopFactory::new_objArray(vmClasses::Class_klass(), klass_array->length(), CHECK_NULL);
3179   // Fill in mirrors corresponding to method holders
3180   for (int i = 0; i < klass_array->length(); i++) {
3181     result->obj_at_put(i, klass_array->at(i)->java_mirror());
3182   }
3183 
3184   return (jobjectArray) JNIHandles::make_local(THREAD, result);
3185 JVM_END
3186 
3187 
3188 // java.lang.Package ////////////////////////////////////////////////////////////////
3189 
3190 
3191 JVM_ENTRY_PROF(jstring, JVM_GetSystemPackage, JVM_GetSystemPackage(JNIEnv *env, jstring name))
3192   ResourceMark rm(THREAD);
3193   JvmtiVMObjectAllocEventCollector oam;
3194   char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
3195   oop result = ClassLoader::get_system_package(str, CHECK_NULL);
3196 return (jstring) JNIHandles::make_local(THREAD, result);
3197 JVM_END
3198 
3199 
3200 JVM_ENTRY_PROF(jobjectArray, JVM_GetSystemPackages, JVM_GetSystemPackages(JNIEnv *env))
3201   JvmtiVMObjectAllocEventCollector oam;
3202   objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL);
3203   return (jobjectArray) JNIHandles::make_local(THREAD, result);
3204 JVM_END
3205 
3206 
3207 // java.lang.ref.Reference ///////////////////////////////////////////////////////////////
3208 
3209 
3210 JVM_ENTRY_PROF(jobject, JVM_GetAndClearReferencePendingList, JVM_GetAndClearReferencePendingList(JNIEnv* env))
3211   MonitorLocker ml(Heap_lock);
3212   oop ref = Universe::reference_pending_list();
3213   if (ref != nullptr) {
3214     Universe::clear_reference_pending_list();
3215   }
3216   return JNIHandles::make_local(THREAD, ref);
3217 JVM_END
3218 
3219 JVM_ENTRY_PROF(jboolean, JVM_HasReferencePendingList, JVM_HasReferencePendingList(JNIEnv* env))
3220   MonitorLocker ml(Heap_lock);
3221   return Universe::has_reference_pending_list();
3222 JVM_END
3223 
3224 JVM_ENTRY_PROF(void, JVM_WaitForReferencePendingList, JVM_WaitForReferencePendingList(JNIEnv* env))
3225   MonitorLocker ml(Heap_lock);
3226   while (!Universe::has_reference_pending_list()) {
3227     ml.wait();
3228   }
3229 JVM_END
3230 
3231 JVM_ENTRY_PROF(jboolean, JVM_ReferenceRefersTo, JVM_ReferenceRefersTo(JNIEnv* env, jobject ref, jobject o))
3232   oop ref_oop = JNIHandles::resolve_non_null(ref);
3233   // PhantomReference has it's own implementation of refersTo().
3234   // See: JVM_PhantomReferenceRefersTo
3235   assert(!java_lang_ref_Reference::is_phantom(ref_oop), "precondition");
3236   oop referent = java_lang_ref_Reference::weak_referent_no_keepalive(ref_oop);
3237   return referent == JNIHandles::resolve(o);
3238 JVM_END
3239 
3240 JVM_ENTRY_PROF(void, JVM_ReferenceClear, JVM_ReferenceClear(JNIEnv* env, jobject ref))
3241   oop ref_oop = JNIHandles::resolve_non_null(ref);
3242   // FinalReference has it's own implementation of clear().
3243   assert(!java_lang_ref_Reference::is_final(ref_oop), "precondition");
3244   if (java_lang_ref_Reference::unknown_referent_no_keepalive(ref_oop) == nullptr) {
3245     // If the referent has already been cleared then done.
3246     // However, if the referent is dead but has not yet been cleared by
3247     // concurrent reference processing, it should NOT be cleared here.
3248     // Instead, clearing should be left to the GC.  Clearing it here could
3249     // detectably lose an expected notification, which is impossible with
3250     // STW reference processing.  The clearing in enqueue() doesn't have
3251     // this problem, since the enqueue covers the notification, but it's not
3252     // worth the effort to handle that case specially.
3253     return;
3254   }
3255   java_lang_ref_Reference::clear_referent(ref_oop);
3256 JVM_END
3257 
3258 
3259 // java.lang.ref.PhantomReference //////////////////////////////////////////////////
3260 
3261 
3262 JVM_ENTRY_PROF(jboolean, JVM_PhantomReferenceRefersTo, JVM_PhantomReferenceRefersTo(JNIEnv* env, jobject ref, jobject o))
3263   oop ref_oop = JNIHandles::resolve_non_null(ref);
3264   oop referent = java_lang_ref_Reference::phantom_referent_no_keepalive(ref_oop);
3265   return referent == JNIHandles::resolve(o);
3266 JVM_END
3267 
3268 
3269 // ObjectInputStream ///////////////////////////////////////////////////////////////
3270 
3271 // Return the first user-defined class loader up the execution stack, or null
3272 // if only code from the bootstrap or platform class loader is on the stack.
3273 
3274 JVM_ENTRY_PROF(jobject, JVM_LatestUserDefinedLoader, JVM_LatestUserDefinedLoader(JNIEnv *env))
3275   for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) {
3276     InstanceKlass* ik = vfst.method()->method_holder();
3277     oop loader = ik->class_loader();
3278     if (loader != nullptr && !SystemDictionary::is_platform_class_loader(loader)) {
3279       // Skip reflection related frames
3280       if (!ik->is_subclass_of(vmClasses::reflect_SerializationConstructorAccessorImpl_klass())) {
3281         return JNIHandles::make_local(THREAD, loader);
3282       }
3283     }
3284   }
3285   return nullptr;
3286 JVM_END
3287 
3288 
3289 // Array ///////////////////////////////////////////////////////////////////////////////////////////
3290 
3291 
3292 // resolve array handle and check arguments
3293 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) {
3294   if (arr == nullptr) {
3295     THROW_NULL(vmSymbols::java_lang_NullPointerException());
3296   }
3297   oop a = JNIHandles::resolve_non_null(arr);
3298   if (!a->is_array()) {
3299     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array");
3300   } else if (type_array_only && !a->is_typeArray()) {
3301     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array of primitive type");
3302   }
3303   return arrayOop(a);
3304 }
3305 
3306 
3307 JVM_ENTRY_PROF(jint, JVM_GetArrayLength, JVM_GetArrayLength(JNIEnv *env, jobject arr))
3308   arrayOop a = check_array(env, arr, false, CHECK_0);
3309   return a->length();
3310 JVM_END
3311 
3312 
3313 JVM_ENTRY_PROF(jobject, JVM_GetArrayElement, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index))
3314   JvmtiVMObjectAllocEventCollector oam;
3315   arrayOop a = check_array(env, arr, false, CHECK_NULL);
3316   jvalue value;
3317   BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL);
3318   oop box = Reflection::box(&value, type, CHECK_NULL);
3319   return JNIHandles::make_local(THREAD, box);
3320 JVM_END
3321 
3322 
3323 JVM_ENTRY_PROF(jvalue, JVM_GetPrimitiveArrayElement, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode))
3324   jvalue value;
3325   value.i = 0; // to initialize value before getting used in CHECK
3326   arrayOop a = check_array(env, arr, true, CHECK_(value));
3327   assert(a->is_typeArray(), "just checking");
3328   BasicType type = Reflection::array_get(&value, a, index, CHECK_(value));
3329   BasicType wide_type = (BasicType) wCode;
3330   if (type != wide_type) {
3331     Reflection::widen(&value, type, wide_type, CHECK_(value));
3332   }
3333   return value;
3334 JVM_END
3335 
3336 
3337 JVM_ENTRY_PROF(void, JVM_SetArrayElement, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val))
3338   arrayOop a = check_array(env, arr, false, CHECK);
3339   oop box = JNIHandles::resolve(val);
3340   jvalue value;
3341   value.i = 0; // to initialize value before getting used in CHECK
3342   BasicType value_type;
3343   if (a->is_objArray()) {
3344     // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array
3345     value_type = Reflection::unbox_for_regular_object(box, &value);
3346   } else {
3347     value_type = Reflection::unbox_for_primitive(box, &value, CHECK);
3348   }
3349   Reflection::array_set(&value, a, index, value_type, CHECK);
3350 JVM_END
3351 
3352 
3353 JVM_ENTRY_PROF(void, JVM_SetPrimitiveArrayElement, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode))
3354   arrayOop a = check_array(env, arr, true, CHECK);
3355   assert(a->is_typeArray(), "just checking");
3356   BasicType value_type = (BasicType) vCode;
3357   Reflection::array_set(&v, a, index, value_type, CHECK);
3358 JVM_END
3359 
3360 
3361 JVM_ENTRY_PROF(jobject, JVM_NewArray, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length))
3362   JvmtiVMObjectAllocEventCollector oam;
3363   oop element_mirror = JNIHandles::resolve(eltClass);
3364   oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL);
3365   return JNIHandles::make_local(THREAD, result);
3366 JVM_END
3367 
3368 
3369 JVM_ENTRY_PROF(jobject, JVM_NewMultiArray, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim))
3370   JvmtiVMObjectAllocEventCollector oam;
3371   arrayOop dim_array = check_array(env, dim, true, CHECK_NULL);
3372   oop element_mirror = JNIHandles::resolve(eltClass);
3373   assert(dim_array->is_typeArray(), "just checking");
3374   oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL);
3375   return JNIHandles::make_local(THREAD, result);
3376 JVM_END
3377 
3378 
3379 // Library support ///////////////////////////////////////////////////////////////////////////
3380 
3381 JVM_LEAF_PROF(void*, JVM_LoadZipLibrary, JVM_LoadZipLibrary())
3382   return ZipLibrary::handle();
3383 JVM_END
3384 
3385 JVM_ENTRY_NO_ENV_PROF(void*, JVM_LoadLibrary, JVM_LoadLibrary(const char* name, jboolean throwException))
3386   //%note jvm_ct
3387   char ebuf[1024];
3388   void *load_result;
3389   {
3390     ThreadToNativeFromVM ttnfvm(thread);
3391     load_result = os::dll_load(name, ebuf, sizeof ebuf);
3392   }
3393   if (load_result == nullptr) {
3394     if (throwException) {
3395       char msg[1024];
3396       jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf);
3397       // Since 'ebuf' may contain a string encoded using
3398       // platform encoding scheme, we need to pass
3399       // Exceptions::unsafe_to_utf8 to the new_exception method
3400       // as the last argument. See bug 6367357.
3401       Handle h_exception =
3402         Exceptions::new_exception(thread,
3403                                   vmSymbols::java_lang_UnsatisfiedLinkError(),
3404                                   msg, Exceptions::unsafe_to_utf8);
3405 
3406       THROW_HANDLE_NULL(h_exception);
3407     } else {
3408       log_info(library)("Failed to load library %s", name);
3409       return load_result;
3410     }
3411   }
3412   log_info(library)("Loaded library %s, handle " INTPTR_FORMAT, name, p2i(load_result));
3413   return load_result;
3414 JVM_END
3415 
3416 
3417 JVM_LEAF_PROF(void, JVM_UnloadLibrary, JVM_UnloadLibrary(void* handle))
3418   os::dll_unload(handle);
3419   log_info(library)("Unloaded library with handle " INTPTR_FORMAT, p2i(handle));
3420 JVM_END
3421 
3422 
3423 JVM_LEAF_PROF(void*, JVM_FindLibraryEntry, JVM_FindLibraryEntry(void* handle, const char* name))
3424   void* find_result = os::dll_lookup(handle, name);
3425   log_info(library)("%s %s in library with handle " INTPTR_FORMAT,
3426                     find_result != nullptr ? "Found" : "Failed to find",
3427                     name, p2i(handle));
3428   return find_result;
3429 JVM_END
3430 
3431 
3432 // JNI version ///////////////////////////////////////////////////////////////////////////////
3433 
3434 JVM_LEAF_PROF(jboolean, JVM_IsSupportedJNIVersion, JVM_IsSupportedJNIVersion(jint version))
3435   return Threads::is_supported_jni_version_including_1_1(version);
3436 JVM_END
3437 
3438 
3439 JVM_LEAF_PROF(jboolean, JVM_IsPreviewEnabled, JVM_IsPreviewEnabled(void))
3440   return Arguments::enable_preview() ? JNI_TRUE : JNI_FALSE;
3441 JVM_END
3442 
3443 JVM_LEAF_PROF(jboolean, JVM_IsContinuationsSupported, JVM_IsContinuationsSupported(void))
3444   return VMContinuations ? JNI_TRUE : JNI_FALSE;
3445 JVM_END
3446 
3447 JVM_LEAF_PROF(jboolean, JVM_IsForeignLinkerSupported, JVM_IsForeignLinkerSupported(void))
3448   return ForeignGlobals::is_foreign_linker_supported() ? JNI_TRUE : JNI_FALSE;
3449 JVM_END
3450 
3451 JVM_ENTRY_NO_ENV(jboolean, JVM_IsStaticallyLinked(void))
3452   return is_vm_statically_linked() ? JNI_TRUE : JNI_FALSE;
3453 JVM_END
3454 
3455 // String support ///////////////////////////////////////////////////////////////////////////
3456 
3457 JVM_ENTRY_PROF(jstring, JVM_InternString, JVM_InternString(JNIEnv *env, jstring str))
3458   JvmtiVMObjectAllocEventCollector oam;
3459   if (str == nullptr) return nullptr;
3460   oop string = JNIHandles::resolve_non_null(str);
3461   oop result = StringTable::intern(string, CHECK_NULL);
3462   return (jstring) JNIHandles::make_local(THREAD, result);
3463 JVM_END
3464 
3465 
3466 // VM Raw monitor support //////////////////////////////////////////////////////////////////////
3467 
3468 // VM Raw monitors (not to be confused with JvmtiRawMonitors) are a simple mutual exclusion
3469 // lock (not actually monitors: no wait/notify) that is exported by the VM for use by JDK
3470 // library code. They may be used by JavaThreads and non-JavaThreads and do not participate
3471 // in the safepoint protocol, thread suspension, thread interruption, or anything of that
3472 // nature. JavaThreads will be "in native" when using this API from JDK code.
3473 
3474 
3475 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) {
3476   VM_Exit::block_if_vm_exited();
3477   return new PlatformMutex();

3503                                     Handle loader, Handle protection_domain,
3504                                     jboolean throwError, TRAPS) {
3505   // Security Note:
3506   //   The Java level wrapper will perform the necessary security check allowing
3507   //   us to pass the null as the initiating class loader.  The VM is responsible for
3508   //   the checkPackageAccess relative to the initiating class loader via the
3509   //   protection_domain. The protection_domain is passed as null by the java code
3510   //   if there is no security manager in 3-arg Class.forName().
3511   Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL);
3512 
3513   // Check if we should initialize the class
3514   if (init && klass->is_instance_klass()) {
3515     klass->initialize(CHECK_NULL);
3516   }
3517   return (jclass) JNIHandles::make_local(THREAD, klass->java_mirror());
3518 }
3519 
3520 
3521 // Method ///////////////////////////////////////////////////////////////////////////////////////////
3522 
3523 JVM_ENTRY_PROF(jobject, JVM_InvokeMethod, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0))
3524   Handle method_handle;
3525   if (thread->stack_overflow_state()->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) {
3526     method_handle = Handle(THREAD, JNIHandles::resolve(method));
3527     Handle receiver(THREAD, JNIHandles::resolve(obj));
3528     objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0)));
3529     oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL);
3530     jobject res = JNIHandles::make_local(THREAD, result);
3531     if (JvmtiExport::should_post_vm_object_alloc()) {
3532       oop ret_type = java_lang_reflect_Method::return_type(method_handle());
3533       assert(ret_type != nullptr, "sanity check: ret_type oop must not be null!");
3534       if (java_lang_Class::is_primitive(ret_type)) {
3535         // Only for primitive type vm allocates memory for java object.
3536         // See box() method.
3537         JvmtiExport::post_vm_object_alloc(thread, result);
3538       }
3539     }
3540     return res;
3541   } else {
3542     THROW_NULL(vmSymbols::java_lang_StackOverflowError());
3543   }
3544 JVM_END
3545 
3546 
3547 JVM_ENTRY_PROF(jobject, JVM_NewInstanceFromConstructor, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0))
3548   oop constructor_mirror = JNIHandles::resolve(c);
3549   objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0)));
3550   oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL);
3551   jobject res = JNIHandles::make_local(THREAD, result);
3552   if (JvmtiExport::should_post_vm_object_alloc()) {
3553     JvmtiExport::post_vm_object_alloc(thread, result);
3554   }
3555   return res;
3556 JVM_END
3557 
3558 JVM_ENTRY_PROF(void, JVM_InitializeFromArchive, JVM_InitializeFromArchive(JNIEnv* env, jclass cls))
3559   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls));
3560   assert(k->is_klass(), "just checking");
3561   HeapShared::initialize_from_archived_subgraph(THREAD, k);
3562 JVM_END
3563 
3564 JVM_ENTRY_PROF(void, JVM_RegisterLambdaProxyClassForArchiving, JVM_RegisterLambdaProxyClassForArchiving(JNIEnv* env,
3565                                               jclass caller,
3566                                               jstring interfaceMethodName,
3567                                               jobject factoryType,
3568                                               jobject interfaceMethodType,
3569                                               jobject implementationMember,
3570                                               jobject dynamicMethodType,
3571                                               jclass lambdaProxyClass))
3572 #if INCLUDE_CDS
3573   if (!CDSConfig::is_dumping_archive()) {
3574     return;
3575   }
3576 
3577   Klass* caller_k = java_lang_Class::as_Klass(JNIHandles::resolve(caller));
3578   InstanceKlass* caller_ik = InstanceKlass::cast(caller_k);
3579   if (caller_ik->is_hidden()) {
3580     // Hidden classes not of type lambda proxy classes are currently not being archived.
3581     // If the caller_ik is of one of the above types, the corresponding lambda proxy class won't be
3582     // registered for archiving.
3583     return;
3584   }

3592     interface_method_name = java_lang_String::as_symbol(JNIHandles::resolve_non_null(interfaceMethodName));
3593   }
3594   Handle factory_type_oop(THREAD, JNIHandles::resolve_non_null(factoryType));
3595   Symbol* factory_type = java_lang_invoke_MethodType::as_signature(factory_type_oop(), true);
3596 
3597   Handle interface_method_type_oop(THREAD, JNIHandles::resolve_non_null(interfaceMethodType));
3598   Symbol* interface_method_type = java_lang_invoke_MethodType::as_signature(interface_method_type_oop(), true);
3599 
3600   Handle implementation_member_oop(THREAD, JNIHandles::resolve_non_null(implementationMember));
3601   assert(java_lang_invoke_MemberName::is_method(implementation_member_oop()), "must be");
3602   Method* m = java_lang_invoke_MemberName::vmtarget(implementation_member_oop());
3603 
3604   Handle dynamic_method_type_oop(THREAD, JNIHandles::resolve_non_null(dynamicMethodType));
3605   Symbol* dynamic_method_type = java_lang_invoke_MethodType::as_signature(dynamic_method_type_oop(), true);
3606 
3607   SystemDictionaryShared::add_lambda_proxy_class(caller_ik, lambda_ik, interface_method_name, factory_type,
3608                                                  interface_method_type, m, dynamic_method_type, THREAD);
3609 #endif // INCLUDE_CDS
3610 JVM_END
3611 
3612 JVM_ENTRY_PROF(jclass, JVM_LookupLambdaProxyClassFromArchive, JVM_LookupLambdaProxyClassFromArchive(JNIEnv* env,
3613                                                         jclass caller,
3614                                                         jstring interfaceMethodName,
3615                                                         jobject factoryType,
3616                                                         jobject interfaceMethodType,
3617                                                         jobject implementationMember,
3618                                                         jobject dynamicMethodType))
3619 #if INCLUDE_CDS
3620 
3621   if (interfaceMethodName == nullptr || factoryType == nullptr || interfaceMethodType == nullptr ||
3622       implementationMember == nullptr || dynamicMethodType == nullptr) {
3623     THROW_(vmSymbols::java_lang_NullPointerException(), nullptr);
3624   }
3625 
3626   Klass* caller_k = java_lang_Class::as_Klass(JNIHandles::resolve(caller));
3627   InstanceKlass* caller_ik = InstanceKlass::cast(caller_k);
3628   if (!caller_ik->is_shared()) {
3629     // there won't be a shared lambda class if the caller_ik is not in the shared archive.
3630     return nullptr;
3631   }
3632 

3640   Handle implementation_member_oop(THREAD, JNIHandles::resolve_non_null(implementationMember));
3641   assert(java_lang_invoke_MemberName::is_method(implementation_member_oop()), "must be");
3642   Method* m = java_lang_invoke_MemberName::vmtarget(implementation_member_oop());
3643 
3644   Handle dynamic_method_type_oop(THREAD, JNIHandles::resolve_non_null(dynamicMethodType));
3645   Symbol* dynamic_method_type = java_lang_invoke_MethodType::as_signature(dynamic_method_type_oop(), true);
3646 
3647   InstanceKlass* lambda_ik = SystemDictionaryShared::get_shared_lambda_proxy_class(caller_ik, interface_method_name, factory_type,
3648                                                                                    interface_method_type, m, dynamic_method_type);
3649   jclass jcls = nullptr;
3650   if (lambda_ik != nullptr) {
3651     InstanceKlass* loaded_lambda = SystemDictionaryShared::prepare_shared_lambda_proxy_class(lambda_ik, caller_ik, THREAD);
3652     jcls = loaded_lambda == nullptr ? nullptr : (jclass) JNIHandles::make_local(THREAD, loaded_lambda->java_mirror());
3653   }
3654   return jcls;
3655 #else
3656   return nullptr;
3657 #endif // INCLUDE_CDS
3658 JVM_END
3659 
3660 JVM_ENTRY_NO_ENV_PROF(jlong, JVM_GetRandomSeedForDumping, JVM_GetRandomSeedForDumping())
3661   if (CDSConfig::is_dumping_static_archive()) {
3662     // We do this so that the default CDS archive can be deterministic.
3663     const char* release = VM_Version::vm_release();
3664     const char* dbg_level = VM_Version::jdk_debug_level();
3665     const char* version = VM_Version::internal_vm_info_string();
3666     jlong seed = (jlong)(java_lang_String::hash_code((const jbyte*)release, (int)strlen(release)) ^
3667                          java_lang_String::hash_code((const jbyte*)dbg_level, (int)strlen(dbg_level)) ^
3668                          java_lang_String::hash_code((const jbyte*)version, (int)strlen(version)));
3669     seed += (jlong)VM_Version::vm_major_version();
3670     seed += (jlong)VM_Version::vm_minor_version();
3671     seed += (jlong)VM_Version::vm_security_version();
3672     seed += (jlong)VM_Version::vm_patch_version();
3673     if (seed == 0) { // don't let this ever be zero.
3674       seed = 0x87654321;
3675     }
3676     log_debug(cds)("JVM_GetRandomSeedForDumping() = " JLONG_FORMAT, seed);
3677     return seed;
3678   } else {
3679     return 0;
3680   }
3681 JVM_END
3682 
3683 JVM_ENTRY_NO_ENV_PROF(jint, JVM_GetCDSConfigStatus, JVM_GetCDSConfigStatus())
3684   return CDSConfig::get_status();
3685 JVM_END
3686 
3687 JVM_ENTRY_PROF(void, JVM_LogLambdaFormInvoker, JVM_LogLambdaFormInvoker(JNIEnv *env, jstring line))
3688 #if INCLUDE_CDS
3689   assert(CDSConfig::is_logging_lambda_form_invokers(), "sanity");
3690   if (line != nullptr) {
3691     ResourceMark rm(THREAD);
3692     Handle h_line (THREAD, JNIHandles::resolve_non_null(line));
3693     char* c_line = java_lang_String::as_utf8_string(h_line());
3694     if (CDSConfig::is_dumping_dynamic_archive() || CDSConfig::is_dumping_preimage_static_archive()) {
3695       // Note: LambdaFormInvokers::append take same format which is not
3696       // same as below the print format. The line does not include LAMBDA_FORM_TAG.
3697       LambdaFormInvokers::append(os::strdup((const char*)c_line, mtInternal));
3698     }
3699     if (ClassListWriter::is_enabled()) {
3700       ClassListWriter w;
3701       w.stream()->print_cr("%s %s", ClassListParser::lambda_form_tag(), c_line);
3702     }
3703   }
3704 #endif // INCLUDE_CDS
3705 JVM_END
3706 
3707 JVM_ENTRY_PROF(void, JVM_LogDynamicProxy, JVM_LogDynamicProxy(JNIEnv *env, jobject loader, jstring proxy_name, jobjectArray interfaces, jint access_flags))
3708 #if INCLUDE_CDS
3709   assert(CDSConfig::is_logging_dynamic_proxies(),  "sanity");
3710 
3711   ResourceMark rm(THREAD);
3712   oop proxy_name_oop = JNIHandles::resolve_non_null(proxy_name);
3713   char* proxy_name_str = java_lang_String::as_utf8_string(proxy_name_oop);
3714   oop loader_oop = JNIHandles::resolve(loader);
3715   objArrayOop interfaces_oop = objArrayOop(JNIHandles::resolve_non_null(interfaces));
3716 
3717   AOTConstantPoolResolver::trace_dynamic_proxy_class(loader_oop, proxy_name_str, interfaces_oop, access_flags);
3718 #endif // INCLUDE_CDS
3719 JVM_END
3720 
3721 JVM_ENTRY_PROF(void, JVM_DumpClassListToFile, JVM_DumpClassListToFile(JNIEnv *env, jstring listFileName))
3722 #if INCLUDE_CDS
3723   ResourceMark rm(THREAD);
3724   Handle file_handle(THREAD, JNIHandles::resolve_non_null(listFileName));
3725   char* file_name  = java_lang_String::as_utf8_string(file_handle());
3726   MetaspaceShared::dump_loaded_classes(file_name, THREAD);
3727 #endif // INCLUDE_CDS
3728 JVM_END
3729 
3730 JVM_ENTRY_PROF(void, JVM_DumpDynamicArchive, JVM_DumpDynamicArchive(JNIEnv *env, jstring archiveName))
3731 #if INCLUDE_CDS
3732   ResourceMark rm(THREAD);
3733   Handle file_handle(THREAD, JNIHandles::resolve_non_null(archiveName));
3734   char* archive_name  = java_lang_String::as_utf8_string(file_handle());
3735   DynamicArchive::dump_for_jcmd(archive_name, CHECK);
3736 #endif // INCLUDE_CDS
3737 JVM_END
3738 
3739 // Returns an array of all live Thread objects (VM internal JavaThreads,
3740 // jvmti agent threads, and JNI attaching threads  are skipped)
3741 // See CR 6404306 regarding JNI attaching threads
3742 JVM_ENTRY_PROF(jobjectArray, JVM_GetAllThreads, JVM_GetAllThreads(JNIEnv *env, jclass dummy))
3743   ResourceMark rm(THREAD);
3744   ThreadsListEnumerator tle(THREAD, false, false);
3745   JvmtiVMObjectAllocEventCollector oam;
3746 
3747   int num_threads = tle.num_threads();
3748   objArrayOop r = oopFactory::new_objArray(vmClasses::Thread_klass(), num_threads, CHECK_NULL);
3749   objArrayHandle threads_ah(THREAD, r);
3750 
3751   for (int i = 0; i < num_threads; i++) {
3752     Handle h = tle.get_threadObj(i);
3753     threads_ah->obj_at_put(i, h());
3754   }
3755 
3756   return (jobjectArray) JNIHandles::make_local(THREAD, threads_ah());
3757 JVM_END
3758 
3759 
3760 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods
3761 // Return StackTraceElement[][], each element is the stack trace of a thread in
3762 // the corresponding entry in the given threads array
3763 JVM_ENTRY_PROF(jobjectArray, JVM_DumpThreads, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads))
3764   JvmtiVMObjectAllocEventCollector oam;
3765 
3766   // Check if threads is null
3767   if (threads == nullptr) {
3768     THROW_NULL(vmSymbols::java_lang_NullPointerException());
3769   }
3770 
3771   objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads));
3772   objArrayHandle ah(THREAD, a);
3773   int num_threads = ah->length();
3774   // check if threads is non-empty array
3775   if (num_threads == 0) {
3776     THROW_NULL(vmSymbols::java_lang_IllegalArgumentException());
3777   }
3778 
3779   // check if threads is not an array of objects of Thread class
3780   Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass();
3781   if (k != vmClasses::Thread_klass()) {
3782     THROW_NULL(vmSymbols::java_lang_IllegalArgumentException());
3783   }
3784 
3785   ResourceMark rm(THREAD);
3786 
3787   GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads);
3788   for (int i = 0; i < num_threads; i++) {
3789     oop thread_obj = ah->obj_at(i);
3790     instanceHandle h(THREAD, (instanceOop) thread_obj);
3791     thread_handle_array->append(h);
3792   }
3793 
3794   // The JavaThread references in thread_handle_array are validated
3795   // in VM_ThreadDump::doit().
3796   Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL);
3797   return (jobjectArray)JNIHandles::make_local(THREAD, stacktraces());
3798 
3799 JVM_END
3800 
3801 // JVM monitoring and management support
3802 JVM_LEAF_PROF(void*, JVM_GetManagement, JVM_GetManagement(jint version))
3803   return Management::get_jmm_interface(version);
3804 JVM_END
3805 
3806 // com.sun.tools.attach.VirtualMachine agent properties support
3807 //
3808 // Initialize the agent properties with the properties maintained in the VM
3809 JVM_ENTRY_PROF(jobject, JVM_InitAgentProperties, JVM_InitAgentProperties(JNIEnv *env, jobject properties))
3810   ResourceMark rm;
3811 
3812   Handle props(THREAD, JNIHandles::resolve_non_null(properties));
3813 
3814   PUTPROP(props, "sun.java.command", Arguments::java_command());
3815   PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags());
3816   PUTPROP(props, "sun.jvm.args", Arguments::jvm_args());
3817   return properties;
3818 JVM_END
3819 
3820 JVM_ENTRY_PROF(jobjectArray, JVM_GetEnclosingMethodInfo, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass))
3821 {
3822   JvmtiVMObjectAllocEventCollector oam;
3823 
3824   if (ofClass == nullptr) {
3825     return nullptr;
3826   }
3827   Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass));
3828   // Special handling for primitive objects
3829   if (java_lang_Class::is_primitive(mirror())) {
3830     return nullptr;
3831   }
3832   Klass* k = java_lang_Class::as_Klass(mirror());
3833   if (!k->is_instance_klass()) {
3834     return nullptr;
3835   }
3836   InstanceKlass* ik = InstanceKlass::cast(k);
3837   int encl_method_class_idx = ik->enclosing_method_class_index();
3838   if (encl_method_class_idx == 0) {
3839     return nullptr;
3840   }

3843   Klass* enc_k = ik->constants()->klass_at(encl_method_class_idx, CHECK_NULL);
3844   dest->obj_at_put(0, enc_k->java_mirror());
3845   int encl_method_method_idx = ik->enclosing_method_method_index();
3846   if (encl_method_method_idx != 0) {
3847     Symbol* sym = ik->constants()->symbol_at(
3848                         extract_low_short_from_int(
3849                           ik->constants()->name_and_type_at(encl_method_method_idx)));
3850     Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL);
3851     dest->obj_at_put(1, str());
3852     sym = ik->constants()->symbol_at(
3853               extract_high_short_from_int(
3854                 ik->constants()->name_and_type_at(encl_method_method_idx)));
3855     str = java_lang_String::create_from_symbol(sym, CHECK_NULL);
3856     dest->obj_at_put(2, str());
3857   }
3858   return (jobjectArray) JNIHandles::make_local(THREAD, dest());
3859 }
3860 JVM_END
3861 
3862 // Returns an array of java.lang.String objects containing the input arguments to the VM.
3863 JVM_ENTRY_PROF(jobjectArray, JVM_GetVmArguments, JVM_GetVmArguments(JNIEnv *env))
3864   ResourceMark rm(THREAD);
3865 
3866   if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) {
3867     return nullptr;
3868   }
3869 
3870   char** vm_flags = Arguments::jvm_flags_array();
3871   char** vm_args = Arguments::jvm_args_array();
3872   int num_flags = Arguments::num_jvm_flags();
3873   int num_args = Arguments::num_jvm_args();
3874 
3875   InstanceKlass* ik = vmClasses::String_klass();
3876   objArrayOop r = oopFactory::new_objArray(ik, num_args + num_flags, CHECK_NULL);
3877   objArrayHandle result_h(THREAD, r);
3878 
3879   int index = 0;
3880   for (int j = 0; j < num_flags; j++, index++) {
3881     Handle h = java_lang_String::create_from_platform_dependent_str(vm_flags[j], CHECK_NULL);
3882     result_h->obj_at_put(index, h());
3883   }
3884   for (int i = 0; i < num_args; i++, index++) {
3885     Handle h = java_lang_String::create_from_platform_dependent_str(vm_args[i], CHECK_NULL);
3886     result_h->obj_at_put(index, h());
3887   }
3888   return (jobjectArray) JNIHandles::make_local(THREAD, result_h());
3889 JVM_END
3890 
3891 JVM_LEAF_PROF(jint, JVM_FindSignal, JVM_FindSignal(const char *name))
3892   return os::get_signal_number(name);
3893 JVM_END
3894 
3895 JVM_ENTRY_PROF(void, JVM_VirtualThreadStart, JVM_VirtualThreadStart(JNIEnv* env, jobject vthread))
3896 #if INCLUDE_JVMTI
3897   if (!DoJVMTIVirtualThreadTransitions) {
3898     assert(!JvmtiExport::can_support_virtual_threads(), "sanity check");
3899     return;
3900   }
3901   if (JvmtiVTMSTransitionDisabler::VTMS_notify_jvmti_events()) {
3902     JvmtiVTMSTransitionDisabler::VTMS_vthread_start(vthread);
3903   } else {
3904     // set VTMS transition bit value in JavaThread and java.lang.VirtualThread object
3905     JvmtiVTMSTransitionDisabler::set_is_in_VTMS_transition(thread, vthread, false);
3906   }
3907 #endif
3908 JVM_END
3909 
3910 JVM_ENTRY_PROF(void, JVM_VirtualThreadEnd, JVM_VirtualThreadEnd(JNIEnv* env, jobject vthread))
3911 #if INCLUDE_JVMTI
3912   if (!DoJVMTIVirtualThreadTransitions) {
3913     assert(!JvmtiExport::can_support_virtual_threads(), "sanity check");
3914     return;
3915   }
3916   if (JvmtiVTMSTransitionDisabler::VTMS_notify_jvmti_events()) {
3917     JvmtiVTMSTransitionDisabler::VTMS_vthread_end(vthread);
3918   } else {
3919     // set VTMS transition bit value in JavaThread and java.lang.VirtualThread object
3920     JvmtiVTMSTransitionDisabler::set_is_in_VTMS_transition(thread, vthread, true);
3921   }
3922 #endif
3923 JVM_END
3924 
3925 // If notifications are disabled then just update the VTMS transition bit and return.
3926 // Otherwise, the bit is updated in the given jvmtiVTMSTransitionDisabler function call.
3927 JVM_ENTRY_PROF(void, JVM_VirtualThreadMount, JVM_VirtualThreadMount(JNIEnv* env, jobject vthread, jboolean hide))
3928 #if INCLUDE_JVMTI
3929   if (!DoJVMTIVirtualThreadTransitions) {
3930     assert(!JvmtiExport::can_support_virtual_threads(), "sanity check");
3931     return;
3932   }
3933   if (JvmtiVTMSTransitionDisabler::VTMS_notify_jvmti_events()) {
3934     JvmtiVTMSTransitionDisabler::VTMS_vthread_mount(vthread, hide);
3935   } else {
3936     // set VTMS transition bit value in JavaThread and java.lang.VirtualThread object
3937     JvmtiVTMSTransitionDisabler::set_is_in_VTMS_transition(thread, vthread, hide);
3938   }
3939 #endif
3940 JVM_END
3941 
3942 // If notifications are disabled then just update the VTMS transition bit and return.
3943 // Otherwise, the bit is updated in the given jvmtiVTMSTransitionDisabler function call below.
3944 JVM_ENTRY_PROF(void, JVM_VirtualThreadUnmount, JVM_VirtualThreadUnmount(JNIEnv* env, jobject vthread, jboolean hide))
3945 #if INCLUDE_JVMTI
3946   if (!DoJVMTIVirtualThreadTransitions) {
3947     assert(!JvmtiExport::can_support_virtual_threads(), "sanity check");
3948     return;
3949   }
3950   if (JvmtiVTMSTransitionDisabler::VTMS_notify_jvmti_events()) {
3951     JvmtiVTMSTransitionDisabler::VTMS_vthread_unmount(vthread, hide);
3952   } else {
3953     // set VTMS transition bit value in JavaThread and java.lang.VirtualThread object
3954     JvmtiVTMSTransitionDisabler::set_is_in_VTMS_transition(thread, vthread, hide);
3955   }
3956 #endif
3957 JVM_END
3958 
3959 // Always update the temporary VTMS transition bit.
3960 JVM_ENTRY_PROF(void, JVM_VirtualThreadHideFrames, JVM_VirtualThreadHideFrames(JNIEnv* env, jclass clazz, jboolean hide))
3961 #if INCLUDE_JVMTI
3962   if (!DoJVMTIVirtualThreadTransitions) {
3963     assert(!JvmtiExport::can_support_virtual_threads(), "sanity check");
3964     return;
3965   }
3966   assert(!thread->is_in_VTMS_transition(), "sanity check");
3967   assert(thread->is_in_tmp_VTMS_transition() != (bool)hide, "sanity check");
3968   thread->toggle_is_in_tmp_VTMS_transition();
3969 #endif
3970 JVM_END
3971 
3972 // Notification from VirtualThread about disabling JVMTI Suspend in a sync critical section.
3973 // Needed to avoid deadlocks with JVMTI suspend mechanism.
3974 JVM_ENTRY(void, JVM_VirtualThreadDisableSuspend(JNIEnv* env, jclass clazz, jboolean enter))
3975 #if INCLUDE_JVMTI
3976   if (!DoJVMTIVirtualThreadTransitions) {
3977     assert(!JvmtiExport::can_support_virtual_threads(), "sanity check");
3978     return;
3979   }
3980   assert(thread->is_disable_suspend() != (bool)enter,
3981          "nested or unbalanced monitor enter/exit is not allowed");
3982   thread->toggle_is_disable_suspend();
3983 #endif
3984 JVM_END
3985 
3986 /*
3987  * Return the current class's class file version.  The low order 16 bits of the
3988  * returned jint contain the class's major version.  The high order 16 bits
3989  * contain the class's minor version.
3990  */
3991 JVM_ENTRY_PROF(jint, JVM_GetClassFileVersion, JVM_GetClassFileVersion(JNIEnv* env, jclass current))
3992   oop mirror = JNIHandles::resolve_non_null(current);
3993   if (java_lang_Class::is_primitive(mirror)) {
3994     // return latest major version and minor version of 0.
3995     return JVM_CLASSFILE_MAJOR_VERSION;
3996   }
3997   assert(!java_lang_Class::as_Klass(mirror)->is_array_klass(), "unexpected array class");
3998 
3999   Klass* c = java_lang_Class::as_Klass(mirror);
4000   assert(c->is_instance_klass(), "must be");
4001   InstanceKlass* ik = InstanceKlass::cast(c);
4002   return (ik->minor_version() << 16) | ik->major_version();
4003 JVM_END
4004 
4005 /*
4006  * Ensure that code doing a stackwalk and using javaVFrame::locals() to
4007  * get the value will see a materialized value and not a scalar-replaced
4008  * null value.
4009  */
4010 JVM_ENTRY_PROF(void, JVM_EnsureMaterializedForStackWalk_func, JVM_EnsureMaterializedForStackWalk_func(JNIEnv* env, jobject vthread, jobject value))
4011   JVM_EnsureMaterializedForStackWalk(env, value);
4012 JVM_END
4013 
4014 /*
4015  * Return JNI_TRUE if warnings are printed when agents are dynamically loaded.
4016  */
4017 JVM_LEAF_PROF(jboolean, JVM_PrintWarningAtDynamicAgentLoad, JVM_PrintWarningAtDynamicAgentLoad(void))
4018   return (EnableDynamicAgentLoading && !FLAG_IS_CMDLINE(EnableDynamicAgentLoading)) ? JNI_TRUE : JNI_FALSE;
4019 JVM_END
4020 
4021 #define DO_COUNTERS(macro) \
4022   macro(JVM_CurrentTimeMillis) \
4023   macro(JVM_NanoTime) \
4024   macro(JVM_GetNanoTimeAdjustment) \
4025   macro(JVM_ArrayCopy) \
4026   macro(JVM_GetProperties) \
4027   macro(JVM_GetTemporaryDirectory) \
4028   macro(JVM_BeforeHalt) \
4029   macro(JVM_Halt) \
4030   macro(JVM_GC) \
4031   macro(JVM_MaxObjectInspectionAge) \
4032   macro(JVM_TotalMemory) \
4033   macro(JVM_FreeMemory) \
4034   macro(JVM_MaxMemory) \
4035   macro(JVM_ActiveProcessorCount) \
4036   macro(JVM_IsUseContainerSupport) \
4037   macro(JVM_FillInStackTrace) \
4038   macro(JVM_GetExtendedNPEMessage) \
4039   macro(JVM_InitStackTraceElementArray) \
4040   macro(JVM_InitStackTraceElement) \
4041   macro(JVM_ExpandStackFrameInfo) \
4042   macro(JVM_CallStackWalk) \
4043   macro(JVM_MoreStackWalk) \
4044   macro(JVM_SetStackWalkContinuation) \
4045   macro(JVM_IHashCode) \
4046   macro(JVM_MonitorWait) \
4047   macro(JVM_MonitorNotify) \
4048   macro(JVM_MonitorNotifyAll) \
4049   macro(JVM_Clone) \
4050   macro(JVM_ReportFinalizationComplete) \
4051   macro(JVM_IsFinalizationEnabled) \
4052   macro(JVM_RegisterContinuationMethods) \
4053   macro(JVM_NativePath) \
4054   macro(JVM_GetCallerClass) \
4055   macro(JVM_FindPrimitiveClass) \
4056   macro(JVM_FindClassFromBootLoader) \
4057   macro(JVM_FindClassFromCaller) \
4058   macro(JVM_FindClassFromClass) \
4059   macro(JVM_DefineClass) \
4060   macro(JVM_LookupDefineClass) \
4061   macro(JVM_DefineClassWithSource) \
4062   macro(JVM_FindLoadedClass) \
4063   macro(JVM_DefineModule) \
4064   macro(JVM_SetBootLoaderUnnamedModule) \
4065   macro(JVM_AddModuleExports) \
4066   macro(JVM_AddModuleExportsToAllUnnamed) \
4067   macro(JVM_AddModuleExportsToAll) \
4068   macro(JVM_AddReadsModule) \
4069   macro(JVM_DefineArchivedModules) \
4070   macro(JVM_InitClassName) \
4071   macro(JVM_GetClassInterfaces) \
4072   macro(JVM_IsInterface) \
4073   macro(JVM_IsHiddenClass) \
4074   macro(JVM_GetProtectionDomain) \
4075   macro(JVM_GetInheritedAccessControlContext) \
4076   macro(JVM_GetStackAccessControlContext) \
4077   macro(JVM_FindScopedValueBindings) \
4078   macro(JVM_IsArrayClass) \
4079   macro(JVM_IsPrimitiveClass) \
4080   macro(JVM_GetClassModifiers) \
4081   macro(JVM_GetDeclaredClasses) \
4082   macro(JVM_GetDeclaringClass) \
4083   macro(JVM_GetSimpleBinaryName) \
4084   macro(JVM_GetClassSignature) \
4085   macro(JVM_GetClassAnnotations) \
4086   macro(JVM_GetClassTypeAnnotations) \
4087   macro(JVM_GetMethodTypeAnnotations) \
4088   macro(JVM_GetFieldTypeAnnotations) \
4089   macro(JVM_GetMethodParameters) \
4090   macro(JVM_GetClassDeclaredFields) \
4091   macro(JVM_IsRecord) \
4092   macro(JVM_GetRecordComponents) \
4093   macro(JVM_GetClassDeclaredMethods) \
4094   macro(JVM_GetClassDeclaredConstructors) \
4095   macro(JVM_GetClassAccessFlags) \
4096   macro(JVM_AreNestMates) \
4097   macro(JVM_GetNestHost) \
4098   macro(JVM_GetNestMembers) \
4099   macro(JVM_GetPermittedSubclasses) \
4100   macro(JVM_GetClassConstantPool) \
4101   macro(JVM_ConstantPoolGetSize) \
4102   macro(JVM_ConstantPoolGetClassAt) \
4103   macro(JVM_ConstantPoolGetClassAtIfLoaded) \
4104   macro(JVM_ConstantPoolGetMethodAt) \
4105   macro(JVM_ConstantPoolGetMethodAtIfLoaded) \
4106   macro(JVM_ConstantPoolGetFieldAt) \
4107   macro(JVM_ConstantPoolGetFieldAtIfLoaded) \
4108   macro(JVM_ConstantPoolGetMemberRefInfoAt) \
4109   macro(JVM_ConstantPoolGetClassRefIndexAt) \
4110   macro(JVM_ConstantPoolGetNameAndTypeRefIndexAt) \
4111   macro(JVM_ConstantPoolGetNameAndTypeRefInfoAt) \
4112   macro(JVM_ConstantPoolGetIntAt) \
4113   macro(JVM_ConstantPoolGetLongAt) \
4114   macro(JVM_ConstantPoolGetFloatAt) \
4115   macro(JVM_ConstantPoolGetDoubleAt) \
4116   macro(JVM_ConstantPoolGetStringAt) \
4117   macro(JVM_ConstantPoolGetUTF8At) \
4118   macro(JVM_ConstantPoolGetTagAt) \
4119   macro(JVM_DesiredAssertionStatus) \
4120   macro(JVM_AssertionStatusDirectives) \
4121   macro(JVM_GetClassNameUTF) \
4122   macro(JVM_GetClassCPTypes) \
4123   macro(JVM_GetClassCPEntriesCount) \
4124   macro(JVM_GetClassFieldsCount) \
4125   macro(JVM_GetClassMethodsCount) \
4126   macro(JVM_GetMethodIxExceptionIndexes) \
4127   macro(JVM_GetMethodIxExceptionsCount) \
4128   macro(JVM_GetMethodIxByteCode) \
4129   macro(JVM_GetMethodIxByteCodeLength) \
4130   macro(JVM_GetMethodIxExceptionTableEntry) \
4131   macro(JVM_GetMethodIxExceptionTableLength) \
4132   macro(JVM_GetMethodIxModifiers) \
4133   macro(JVM_GetFieldIxModifiers) \
4134   macro(JVM_GetMethodIxLocalsCount) \
4135   macro(JVM_GetMethodIxArgsSize) \
4136   macro(JVM_GetMethodIxMaxStack) \
4137   macro(JVM_IsConstructorIx) \
4138   macro(JVM_IsVMGeneratedMethodIx) \
4139   macro(JVM_GetMethodIxNameUTF) \
4140   macro(JVM_GetMethodIxSignatureUTF) \
4141   macro(JVM_GetCPFieldNameUTF) \
4142   macro(JVM_GetCPMethodNameUTF) \
4143   macro(JVM_GetCPMethodSignatureUTF) \
4144   macro(JVM_GetCPFieldSignatureUTF) \
4145   macro(JVM_GetCPClassNameUTF) \
4146   macro(JVM_GetCPFieldClassNameUTF) \
4147   macro(JVM_GetCPMethodClassNameUTF) \
4148   macro(JVM_GetCPFieldModifiers) \
4149   macro(JVM_GetCPMethodModifiers) \
4150   macro(JVM_ReleaseUTF) \
4151   macro(JVM_IsSameClassPackage) \
4152   macro(JVM_StartThread) \
4153   macro(JVM_SetThreadPriority) \
4154   macro(JVM_Yield) \
4155   macro(JVM_SleepNanos) \
4156   macro(JVM_CurrentCarrierThread) \
4157   macro(JVM_CurrentThread) \
4158   macro(JVM_SetCurrentThread) \
4159   macro(JVM_GetNextThreadIdOffset) \
4160   macro(JVM_Interrupt) \
4161   macro(JVM_HoldsLock) \
4162   macro(JVM_GetStackTrace) \
4163   macro(JVM_SetNativeThreadName) \
4164   macro(JVM_ScopedValueCache) \
4165   macro(JVM_SetScopedValueCache) \
4166   macro(JVM_GetClassContext) \
4167   macro(JVM_GetSystemPackage) \
4168   macro(JVM_GetSystemPackages) \
4169   macro(JVM_GetAndClearReferencePendingList) \
4170   macro(JVM_HasReferencePendingList) \
4171   macro(JVM_WaitForReferencePendingList) \
4172   macro(JVM_ReferenceRefersTo) \
4173   macro(JVM_ReferenceClear) \
4174   macro(JVM_PhantomReferenceRefersTo) \
4175   macro(JVM_LatestUserDefinedLoader) \
4176   macro(JVM_GetArrayLength) \
4177   macro(JVM_GetArrayElement) \
4178   macro(JVM_GetPrimitiveArrayElement) \
4179   macro(JVM_SetArrayElement) \
4180   macro(JVM_SetPrimitiveArrayElement) \
4181   macro(JVM_NewArray) \
4182   macro(JVM_NewMultiArray) \
4183   macro(JVM_LoadZipLibrary) \
4184   macro(JVM_LoadLibrary) \
4185   macro(JVM_UnloadLibrary) \
4186   macro(JVM_FindLibraryEntry) \
4187   macro(JVM_IsSupportedJNIVersion) \
4188   macro(JVM_IsPreviewEnabled) \
4189   macro(JVM_IsContinuationsSupported) \
4190   macro(JVM_IsForeignLinkerSupported) \
4191   macro(JVM_InternString) \
4192   macro(JVM_InvokeMethod) \
4193   macro(JVM_NewInstanceFromConstructor) \
4194   macro(JVM_InitializeFromArchive) \
4195   macro(JVM_RegisterLambdaProxyClassForArchiving) \
4196   macro(JVM_LookupLambdaProxyClassFromArchive) \
4197   macro(JVM_GetRandomSeedForDumping) \
4198   macro(JVM_LogLambdaFormInvoker) \
4199   macro(JVM_LogDynamicProxy) \
4200   macro(JVM_DumpClassListToFile) \
4201   macro(JVM_DumpDynamicArchive) \
4202   macro(JVM_GetAllThreads) \
4203   macro(JVM_DumpThreads) \
4204   macro(JVM_GetManagement) \
4205   macro(JVM_InitAgentProperties) \
4206   macro(JVM_GetEnclosingMethodInfo) \
4207   macro(JVM_GetVmArguments) \
4208   macro(JVM_FindSignal) \
4209   macro(JVM_VirtualThreadStart) \
4210   macro(JVM_VirtualThreadEnd) \
4211   macro(JVM_VirtualThreadMount) \
4212   macro(JVM_VirtualThreadUnmount) \
4213   macro(JVM_VirtualThreadHideFrames) \
4214   macro(JVM_GetClassFileVersion) \
4215   macro(JVM_EnsureMaterializedForStackWalk_func) \
4216   macro(JVM_PrintWarningAtDynamicAgentLoad)
4217 
4218 #define INIT_COUNTER(name) \
4219     NEWPERFTICKCOUNTERS(_perf_##name##_timer, SUN_RT, #name); \
4220     NEWPERFEVENTCOUNTER(_perf_##name##_count, SUN_RT, #name "_count"); \
4221 
4222 void perf_jvm_init() {
4223   if (ProfileVMCalls && UsePerfData) {
4224     EXCEPTION_MARK;
4225 
4226     DO_COUNTERS(INIT_COUNTER)
4227 
4228     if (HAS_PENDING_EXCEPTION) {
4229       vm_exit_during_initialization("jvm_perf_init failed unexpectedly");
4230     }
4231   }
4232 }
4233 
4234 #undef INIT_COUNTER
4235 
4236 #define PRINT_COUNTER(name) {\
4237   jlong count = _perf_##name##_count->get_value(); \
4238   if (count > 0) { \
4239     st->print_cr("  %-40s = " JLONG_FORMAT_W(6) "us (elapsed) " JLONG_FORMAT_W(6) "us (thread) (" JLONG_FORMAT_W(5) " events)", \
4240                  #name,                                                   \
4241                  _perf_##name##_timer->elapsed_counter_value_us(),        \
4242                  _perf_##name##_timer->thread_counter_value_us(), count); \
4243   }}
4244 
4245 void perf_jvm_print_on(outputStream* st) {
4246   if (ProfileVMCalls && UsePerfData) {
4247     DO_COUNTERS(PRINT_COUNTER)
4248   } else {
4249     st->print_cr("  JVM:  no info (%s is disabled)", (UsePerfData ? "ProfileVMCalls" : "UsePerfData"));
4250   }
4251 }
4252 
4253 #undef PRINT_COUNTER
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