1 /* 2 * Copyright (c) 2012, 2025, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 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 "cds.h" 26 #include "cds/archiveHeapLoader.hpp" 27 #include "cds/cdsConstants.hpp" 28 #include "cds/filemap.hpp" 29 #include "cds/heapShared.hpp" 30 #include "cds/metaspaceShared.hpp" 31 #include "classfile/classLoader.hpp" 32 #include "classfile/classLoaderDataGraph.hpp" 33 #include "classfile/classLoaderStats.hpp" 34 #include "classfile/classPrinter.hpp" 35 #include "classfile/javaClasses.inline.hpp" 36 #include "classfile/modules.hpp" 37 #include "classfile/stringTable.hpp" 38 #include "classfile/symbolTable.hpp" 39 #include "classfile/systemDictionary.hpp" 40 #include "classfile/vmSymbols.hpp" 41 #include "code/codeCache.hpp" 42 #include "compiler/compilationPolicy.hpp" 43 #include "compiler/compilerOracle.hpp" 44 #include "compiler/directivesParser.hpp" 45 #include "compiler/methodMatcher.hpp" 46 #include "gc/shared/concurrentGCBreakpoints.hpp" 47 #include "gc/shared/gcConfig.hpp" 48 #include "gc/shared/genArguments.hpp" 49 #include "jvm.h" 50 #include "jvmtifiles/jvmtiEnv.hpp" 51 #include "logging/log.hpp" 52 #include "memory/iterator.hpp" 53 #include "memory/memoryReserver.hpp" 54 #include "memory/metadataFactory.hpp" 55 #include "memory/iterator.inline.hpp" 56 #include "memory/metaspace/testHelpers.hpp" 57 #include "memory/metaspaceUtils.hpp" 58 #include "memory/oopFactory.hpp" 59 #include "memory/resourceArea.hpp" 60 #include "memory/universe.hpp" 61 #include "nmt/mallocSiteTable.hpp" 62 #include "oops/access.hpp" 63 #include "oops/array.hpp" 64 #include "oops/compressedOops.hpp" 65 #include "oops/compressedOops.inline.hpp" 66 #include "oops/constantPool.inline.hpp" 67 #include "oops/klass.inline.hpp" 68 #include "oops/method.inline.hpp" 69 #include "oops/methodData.inline.hpp" 70 #include "oops/objArrayKlass.hpp" 71 #include "oops/objArrayOop.inline.hpp" 72 #include "oops/oop.inline.hpp" 73 #include "oops/objArrayOop.inline.hpp" 74 #include "oops/typeArrayOop.inline.hpp" 75 #include "prims/jvmtiEnvBase.hpp" 76 #include "prims/resolvedMethodTable.hpp" 77 #include "prims/wbtestmethods/parserTests.hpp" 78 #include "prims/whitebox.inline.hpp" 79 #include "runtime/arguments.hpp" 80 #include "runtime/atomic.hpp" 81 #include "runtime/deoptimization.hpp" 82 #include "runtime/fieldDescriptor.inline.hpp" 83 #include "runtime/flags/jvmFlag.hpp" 84 #include "runtime/flags/jvmFlagAccess.hpp" 85 #include "runtime/frame.inline.hpp" 86 #include "runtime/handles.inline.hpp" 87 #include "runtime/handshake.hpp" 88 #include "runtime/interfaceSupport.inline.hpp" 89 #include "runtime/javaCalls.hpp" 90 #include "runtime/javaThread.inline.hpp" 91 #include "runtime/jniHandles.inline.hpp" 92 #include "runtime/keepStackGCProcessed.hpp" 93 #include "runtime/lockStack.hpp" 94 #include "runtime/os.hpp" 95 #include "runtime/stackFrameStream.inline.hpp" 96 #include "runtime/synchronizer.hpp" 97 #include "runtime/threadSMR.hpp" 98 #include "runtime/vframe.hpp" 99 #include "runtime/vm_version.hpp" 100 #include "services/memoryService.hpp" 101 #include "utilities/align.hpp" 102 #include "utilities/checkedCast.hpp" 103 #include "utilities/debug.hpp" 104 #include "utilities/elfFile.hpp" 105 #include "utilities/exceptions.hpp" 106 #include "utilities/macros.hpp" 107 #include "utilities/nativeCallStack.hpp" 108 #include "utilities/ostream.hpp" 109 #if INCLUDE_G1GC 110 #include "gc/g1/g1Arguments.hpp" 111 #include "gc/g1/g1CollectedHeap.inline.hpp" 112 #include "gc/g1/g1ConcurrentMark.hpp" 113 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp" 114 #include "gc/g1/g1HeapRegionManager.hpp" 115 #include "gc/g1/g1HeapRegionRemSet.inline.hpp" 116 #endif // INCLUDE_G1GC 117 #if INCLUDE_PARALLELGC 118 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 119 #endif // INCLUDE_PARALLELGC 120 #if INCLUDE_SERIALGC 121 #include "gc/serial/serialHeap.hpp" 122 #endif // INCLUDE_SERIALGC 123 #if INCLUDE_ZGC 124 #include "gc/z/zAddress.inline.hpp" 125 #endif // INCLUDE_ZGC 126 #if INCLUDE_JVMCI 127 #include "jvmci/jvmciEnv.hpp" 128 #include "jvmci/jvmciRuntime.hpp" 129 #endif 130 #ifdef LINUX 131 #include "cgroupSubsystem_linux.hpp" 132 #include "osContainer_linux.hpp" 133 #include "os_linux.hpp" 134 #endif 135 136 #define CHECK_JNI_EXCEPTION_(env, value) \ 137 do { \ 138 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 139 THREAD->clear_pending_jni_exception_check(); \ 140 if (HAS_PENDING_EXCEPTION) { \ 141 return(value); \ 142 } \ 143 } while (0) 144 145 #define CHECK_JNI_EXCEPTION(env) \ 146 do { \ 147 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 148 THREAD->clear_pending_jni_exception_check(); \ 149 if (HAS_PENDING_EXCEPTION) { \ 150 return; \ 151 } \ 152 } while (0) 153 154 bool WhiteBox::_used = false; 155 volatile bool WhiteBox::compilation_locked = false; 156 157 class VM_WhiteBoxOperation : public VM_Operation { 158 public: 159 VM_WhiteBoxOperation() { } 160 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 161 bool allow_nested_vm_operations() const { return true; } 162 }; 163 164 165 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 166 return (jlong)(void*)JNIHandles::resolve(obj); 167 WB_END 168 169 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 170 return heapOopSize; 171 WB_END 172 173 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 174 return (jint)os::vm_page_size(); 175 WB_END 176 177 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 178 return os::vm_allocation_granularity(); 179 WB_END 180 181 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 182 return os::large_page_size(); 183 WB_END 184 185 WB_ENTRY(jstring, WB_PrintString(JNIEnv* env, jobject wb, jstring str, jint max_length)) 186 ResourceMark rm(THREAD); 187 stringStream sb; 188 java_lang_String::print(JNIHandles::resolve(str), &sb, max_length); 189 oop result = java_lang_String::create_oop_from_str(sb.as_string(), THREAD); 190 return (jstring) JNIHandles::make_local(THREAD, result); 191 WB_END 192 193 WB_ENTRY(jint, WB_TakeLockAndHangInSafepoint(JNIEnv* env, jobject wb)) 194 JavaThread* self = JavaThread::current(); 195 // VMStatistic_lock is used to minimize interference with VM locking 196 MutexLocker mu(VMStatistic_lock); 197 VM_HangInSafepoint force_safepoint_stuck_op; 198 VMThread::execute(&force_safepoint_stuck_op); 199 ShouldNotReachHere(); 200 return 0; 201 WB_END 202 203 class WBIsKlassAliveClosure : public LockedClassesDo { 204 Symbol* _name; 205 int _count; 206 public: 207 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {} 208 209 void do_klass(Klass* k) { 210 Symbol* ksym = k->name(); 211 if (ksym->fast_compare(_name) == 0) { 212 _count++; 213 } else if (k->is_instance_klass()) { 214 // Need special handling for hidden classes because the JVM 215 // appends "+<hex-address>" to hidden class names. 216 InstanceKlass *ik = InstanceKlass::cast(k); 217 if (ik->is_hidden()) { 218 ResourceMark rm; 219 char* k_name = ksym->as_C_string(); 220 // Find the first '+' char and truncate the string at that point. 221 // NOTE: This will not work correctly if the original hidden class 222 // name contains a '+'. 223 char* plus_char = strchr(k_name, '+'); 224 if (plus_char != nullptr) { 225 *plus_char = 0; 226 char* c_name = _name->as_C_string(); 227 if (strcmp(c_name, k_name) == 0) { 228 _count++; 229 } 230 } 231 } 232 } 233 } 234 235 int count() const { 236 return _count; 237 } 238 }; 239 240 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name)) 241 oop h_name = JNIHandles::resolve(name); 242 if (h_name == nullptr) { 243 return 0; 244 } 245 Symbol* sym = java_lang_String::as_symbol(h_name); 246 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 247 248 WBIsKlassAliveClosure closure(sym); 249 ClassLoaderDataGraph::classes_do(&closure); 250 251 // Return the count of alive classes with this name. 252 return closure.count(); 253 WB_END 254 255 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name)) 256 oop h_name = JNIHandles::resolve(name); 257 if (h_name == nullptr) { 258 return 0; 259 } 260 Symbol* sym = java_lang_String::as_symbol(h_name); 261 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 262 return (jint)sym->refcount(); 263 WB_END 264 265 266 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 267 #if INCLUDE_JVMTI 268 ResourceMark rm; 269 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 270 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 271 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 272 assert(err == JVMTI_ERROR_NONE, "must not fail"); 273 #endif 274 } 275 WB_END 276 277 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 278 #if INCLUDE_JVMTI 279 ResourceMark rm; 280 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 281 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 282 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 283 assert(err == JVMTI_ERROR_NONE, "must not fail"); 284 #endif 285 } 286 WB_END 287 288 289 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 290 return (jlong)Arguments::max_heap_for_compressed_oops(); 291 } 292 WB_END 293 294 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 295 tty->print_cr("Minimum heap %zu Initial heap %zu " 296 "Maximum heap %zu Space alignment %zu Heap alignment %zu", 297 MinHeapSize, 298 InitialHeapSize, 299 MaxHeapSize, 300 SpaceAlignment, 301 HeapAlignment); 302 } 303 WB_END 304 305 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 306 size_t granularity = os::vm_allocation_granularity(); 307 ReservedHeapSpace rhs = HeapReserver::reserve(100 * granularity, granularity, os::vm_page_size(), nullptr); 308 309 // Check if constraints are complied 310 if (!( UseCompressedOops && rhs.is_reserved() && 311 CompressedOops::base() != nullptr && 312 CompressedOops::use_implicit_null_checks() )) { 313 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 314 "\tUseCompressedOops is %d\n" 315 "\trhs.base() is " PTR_FORMAT "\n" 316 "\tCompressedOops::base() is " PTR_FORMAT "\n" 317 "\tCompressedOops::use_implicit_null_checks() is %d", 318 UseCompressedOops, 319 p2i(rhs.base()), 320 p2i(CompressedOops::base()), 321 CompressedOops::use_implicit_null_checks()); 322 return; 323 } 324 325 VirtualSpace vs; 326 vs.initialize(rhs, 50 * granularity); 327 328 tty->print_cr("Reading from no access area... "); 329 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 330 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 331 WB_END 332 333 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 334 size_t magnitude, size_t iterations) { 335 size_t granularity = os::vm_allocation_granularity(); 336 ReservedHeapSpace rhs = HeapReserver::reserve(reserved_space_size * granularity, granularity, os::vm_page_size(), nullptr); 337 if (!rhs.is_reserved()) { 338 tty->print_cr("Failed to initialize ReservedSpace. Can't proceed."); 339 return 3; 340 } 341 342 VirtualSpace vs; 343 if (!vs.initialize(rhs, 0)) { 344 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 345 return 3; 346 } 347 348 int seed = os::random(); 349 tty->print_cr("Random seed is %d", seed); 350 351 for (size_t i = 0; i < iterations; i++) { 352 353 // Whether we will shrink or grow 354 bool shrink = os::random() % 2L == 0; 355 356 // Get random delta to resize virtual space 357 size_t delta = (size_t)os::random() % magnitude; 358 359 // If we are about to shrink virtual space below zero, then expand instead 360 if (shrink && vs.committed_size() < delta) { 361 shrink = false; 362 } 363 364 // Resizing by delta 365 if (shrink) { 366 vs.shrink_by(delta); 367 } else { 368 // If expanding fails expand_by will silently return false 369 vs.expand_by(delta, true); 370 } 371 } 372 return 0; 373 } 374 375 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 376 jlong reserved_space_size, jlong magnitude, jlong iterations)) 377 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 378 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 379 iterations); 380 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 381 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 382 return 1; 383 } 384 385 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 386 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 387 if (sizeof(size_t) < sizeof(jlong)) { 388 jlong size_t_max_value = (jlong)SIZE_MAX; 389 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 390 || iterations > size_t_max_value) { 391 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 392 return 2; 393 } 394 } 395 396 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 397 (size_t) magnitude, (size_t) iterations); 398 WB_END 399 400 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name)) 401 return GCConfig::is_gc_supported((CollectedHeap::Name)name); 402 WB_END 403 404 WB_ENTRY(jboolean, WB_HasLibgraal(JNIEnv* env, jobject o)) 405 #if INCLUDE_JVMCI 406 return JVMCI::shared_library_exists(); 407 #endif 408 return false; 409 WB_END 410 411 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name)) 412 #if INCLUDE_JVMCI 413 if (EnableJVMCI) { 414 // Enter the JVMCI env that will be used by the CompileBroker. 415 JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__); 416 return jvmciEnv.init_error() == JNI_OK && jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name); 417 } 418 #endif 419 return false; 420 WB_END 421 422 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name)) 423 return GCConfig::is_gc_selected((CollectedHeap::Name)name); 424 WB_END 425 426 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o)) 427 return GCConfig::is_gc_selected_ergonomically(); 428 WB_END 429 430 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 431 oop p = JNIHandles::resolve(obj); 432 #if INCLUDE_G1GC 433 if (UseG1GC) { 434 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 435 const G1HeapRegion* hr = g1h->heap_region_containing(p); 436 return hr->is_old_or_humongous(); 437 } 438 #endif 439 #if INCLUDE_PARALLELGC 440 if (UseParallelGC) { 441 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 442 return !psh->is_in_young(p); 443 } 444 #endif 445 #if INCLUDE_ZGC 446 if (UseZGC) { 447 return ZHeap::heap()->is_old(to_zaddress(p)); 448 } 449 #endif 450 #if INCLUDE_SHENANDOAHGC 451 if (UseShenandoahGC) { 452 ShenandoahHeap* sh = ShenandoahHeap::heap(); 453 return sh->mode()->is_generational() ? sh->is_in_old(p) : sh->is_in(p); 454 } 455 #endif 456 #if INCLUDE_SERIALGC 457 if (UseSerialGC) { 458 return !SerialHeap::heap()->is_in_young(p); 459 } 460 #endif 461 ShouldNotReachHere(); 462 return false; 463 WB_END 464 465 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 466 oop p = JNIHandles::resolve(obj); 467 return p->size() * HeapWordSize; 468 WB_END 469 470 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 471 return (jlong)SpaceAlignment; 472 WB_END 473 474 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 475 return (jlong)HeapAlignment; 476 WB_END 477 478 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o)) 479 return Universe::heap()->supports_concurrent_gc_breakpoints(); 480 WB_END 481 482 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o)) 483 ConcurrentGCBreakpoints::acquire_control(); 484 WB_END 485 486 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o)) 487 ConcurrentGCBreakpoints::release_control(); 488 WB_END 489 490 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o)) 491 ConcurrentGCBreakpoints::run_to_idle(); 492 WB_END 493 494 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at)) 495 Handle h_name(THREAD, JNIHandles::resolve(at)); 496 ResourceMark rm; 497 const char* c_name = java_lang_String::as_utf8_string(h_name()); 498 return ConcurrentGCBreakpoints::run_to(c_name); 499 WB_END 500 501 #if INCLUDE_G1GC 502 503 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 504 if (UseG1GC) { 505 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 506 oop result = JNIHandles::resolve(obj); 507 const G1HeapRegion* hr = g1h->heap_region_containing(result); 508 return hr->is_humongous(); 509 } 510 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 511 WB_END 512 513 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 514 if (UseG1GC) { 515 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 516 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr); 517 return hr->is_humongous(); 518 } 519 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 520 WB_END 521 522 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 523 if (UseG1GC) { 524 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 525 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr); 526 return hr->is_free(); 527 } 528 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 529 WB_END 530 531 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 532 if (UseG1GC) { 533 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 534 size_t nr = g1h->max_regions(); 535 return (jlong)nr; 536 } 537 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 538 WB_END 539 540 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 541 if (UseG1GC) { 542 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 543 size_t nr = g1h->num_free_regions(); 544 return (jlong)nr; 545 } 546 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 547 WB_END 548 549 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 550 if (UseG1GC) { 551 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 552 return g1h->concurrent_mark()->cm_thread()->in_progress(); 553 } 554 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 555 WB_END 556 557 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o)) 558 if (UseG1GC) { 559 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 560 G1ConcurrentMark* cm = g1h->concurrent_mark(); 561 return cm->completed_mark_cycles(); 562 } 563 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled"); 564 WB_END 565 566 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 567 if (UseG1GC) { 568 return (jint)G1HeapRegion::GrainBytes; 569 } 570 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 571 WB_END 572 573 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o)) 574 if (UseG1GC) { 575 return G1CollectedHeap::heap()->has_uncommittable_regions(); 576 } 577 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled"); 578 WB_END 579 580 #endif // INCLUDE_G1GC 581 582 #if INCLUDE_PARALLELGC 583 584 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 585 if (UseParallelGC) { 586 return GenAlignment; 587 } 588 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 589 WB_END 590 591 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 592 if (UseParallelGC) { 593 return GenAlignment; 594 } 595 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 596 WB_END 597 598 #endif // INCLUDE_PARALLELGC 599 600 #if INCLUDE_G1GC 601 602 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 603 if (UseG1GC) { 604 ResourceMark rm(THREAD); 605 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 606 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 607 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 608 return JNIHandles::make_local(THREAD, h()); 609 } 610 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 611 WB_END 612 613 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o)) 614 if (UseG1GC) { 615 G1NUMA* numa = G1NUMA::numa(); 616 return (jint)numa->num_active_nodes(); 617 } 618 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled"); 619 WB_END 620 621 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o)) 622 if (UseG1GC) { 623 G1NUMA* numa = G1NUMA::numa(); 624 int num_node_ids = checked_cast<int>(numa->num_active_nodes()); 625 const uint* node_ids = numa->node_ids(); 626 627 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL); 628 for (int i = 0; i < num_node_ids; i++) { 629 result->int_at_put(i, checked_cast<jint>(node_ids[i])); 630 } 631 return (jintArray) JNIHandles::make_local(THREAD, result); 632 } 633 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled"); 634 WB_END 635 636 class OldRegionsLivenessClosure: public G1HeapRegionClosure { 637 638 private: 639 const int _liveness; 640 size_t _total_count; 641 size_t _total_memory; 642 size_t _total_memory_to_free; 643 644 public: 645 OldRegionsLivenessClosure(int liveness) : 646 _liveness(liveness), 647 _total_count(0), 648 _total_memory(0), 649 _total_memory_to_free(0) { } 650 651 size_t total_count() { return _total_count; } 652 size_t total_memory() { return _total_memory; } 653 size_t total_memory_to_free() { return _total_memory_to_free; } 654 655 bool do_heap_region(G1HeapRegion* r) { 656 if (r->is_old()) { 657 size_t live = r->live_bytes(); 658 size_t size = r->used(); 659 size_t reg_size = G1HeapRegion::GrainBytes; 660 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 661 _total_memory += size; 662 ++_total_count; 663 if (size == reg_size) { 664 // We don't include non-full regions since they are unlikely included in mixed gc 665 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 666 _total_memory_to_free += size - live; 667 } 668 } 669 } 670 return false; 671 } 672 }; 673 674 675 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 676 if (!UseG1GC) { 677 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 678 } 679 if (liveness < 0) { 680 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 681 } 682 683 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 684 OldRegionsLivenessClosure rli(liveness); 685 g1h->heap_region_iterate(&rli); 686 687 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 688 result->long_at_put(0, rli.total_count()); 689 result->long_at_put(1, rli.total_memory()); 690 result->long_at_put(2, rli.total_memory_to_free()); 691 return (jlongArray) JNIHandles::make_local(THREAD, result); 692 WB_END 693 694 #endif // INCLUDE_G1GC 695 696 // Alloc memory using the test memory tag so that we can use that to see if 697 // NMT picks it up correctly 698 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 699 jlong addr = 0; 700 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 701 return addr; 702 WB_END 703 704 // Alloc memory with pseudo call stack. The test can create pseudo malloc 705 // allocation site to stress the malloc tracking. 706 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 707 address pc = (address)(size_t)pseudo_stack; 708 NativeCallStack stack(&pc, 1); 709 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 710 WB_END 711 712 // Alloc memory with pseudo call stack and specific memory tag. 713 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint mem_tag)) 714 address pc = (address)(size_t)pseudo_stack; 715 NativeCallStack stack(&pc, 1); 716 return (jlong)(uintptr_t)os::malloc(size, (MemTag)mem_tag, stack); 717 WB_END 718 719 // Free the memory allocated by NMTAllocTest 720 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 721 os::free((void*)(uintptr_t)mem); 722 WB_END 723 724 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 725 return (jlong)(uintptr_t)os::reserve_memory(size, false, mtTest); 726 WB_END 727 728 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size)) 729 return (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size, false, mtTest); 730 WB_END 731 732 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 733 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 734 WB_END 735 736 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 737 os::uncommit_memory((char *)(uintptr_t)addr, size); 738 WB_END 739 740 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 741 os::release_memory((char *)(uintptr_t)addr, size); 742 WB_END 743 744 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 745 int hash_size = MallocSiteTable::hash_buckets(); 746 assert(hash_size > 0, "NMT hash_size should be > 0"); 747 return (jint)hash_size; 748 WB_END 749 750 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size)) 751 Arena* arena = new (mtTest) Arena(mtTest, Arena::Tag::tag_other, size_t(init_size)); 752 return (jlong)arena; 753 WB_END 754 755 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena)) 756 Arena* a = (Arena*)arena; 757 delete a; 758 WB_END 759 760 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size)) 761 Arena* a = (Arena*)arena; 762 a->Amalloc(size_t(size)); 763 WB_END 764 765 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 766 assert(method != nullptr, "method should not be null"); 767 ThreadToNativeFromVM ttn(thread); 768 return env->FromReflectedMethod(method); 769 } 770 771 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 772 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 773 private: 774 int _result; 775 const bool _make_not_entrant; 776 public: 777 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 778 _result(0), _make_not_entrant(make_not_entrant) { } 779 int result() const { return _result; } 780 781 void doit() { 782 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 783 if (t->has_last_Java_frame()) { 784 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) { 785 frame* f = fst.current(); 786 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 787 Deoptimization::deoptimize(t, *f); 788 if (_make_not_entrant) { 789 nmethod* nm = CodeCache::find_nmethod(f->pc()); 790 assert(nm != nullptr, "did not find nmethod"); 791 nm->make_not_entrant(); 792 } 793 ++_result; 794 } 795 } 796 } 797 } 798 } 799 }; 800 801 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 802 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 803 VMThread::execute(&op); 804 return op.result(); 805 WB_END 806 807 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth)) 808 bool result = false; 809 if (thread->has_last_Java_frame()) { 810 ResourceMark rm(THREAD); 811 RegisterMap reg_map(thread, 812 RegisterMap::UpdateMap::include, 813 RegisterMap::ProcessFrames::include, 814 RegisterMap::WalkContinuation::skip); 815 javaVFrame *jvf = thread->last_java_vframe(®_map); 816 for (jint d = 0; d < depth && jvf != nullptr; d++) { 817 jvf = jvf->java_sender(); 818 } 819 result = jvf != nullptr && jvf->fr().is_deoptimized_frame(); 820 } 821 return result; 822 WB_END 823 824 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 825 DeoptimizationScope deopt_scope; 826 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope); 827 deopt_scope.deoptimize_marked(); 828 WB_END 829 830 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 831 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 832 int result = 0; 833 CHECK_JNI_EXCEPTION_(env, result); 834 835 DeoptimizationScope deopt_scope; 836 { 837 MutexLocker mu(Compile_lock); 838 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 839 if (is_osr) { 840 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh()); 841 } else { 842 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag); 843 if (mh->code() != nullptr) { 844 deopt_scope.mark(mh->code()); 845 ++result; 846 } 847 } 848 CodeCache::mark_for_deoptimization(&deopt_scope, mh()); 849 } 850 851 deopt_scope.deoptimize_marked(); 852 853 return result; 854 WB_END 855 856 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 857 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 858 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 859 MutexLocker mu(Compile_lock); 860 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 861 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 862 if (code == nullptr) { 863 return JNI_FALSE; 864 } 865 return !code->is_marked_for_deoptimization(); 866 WB_END 867 868 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) { 869 if (comp == nullptr) { 870 return true; 871 } 872 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 873 bool exclude = directive->ExcludeOption; 874 DirectivesStack::release(directive); 875 return exclude; 876 } 877 878 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) { 879 if (is_osr) { 880 return CompilationPolicy::can_be_osr_compiled(mh, level); 881 } else { 882 return CompilationPolicy::can_be_compiled(mh, level); 883 } 884 } 885 886 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 887 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) { 888 return false; 889 } 890 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 891 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 892 MutexLocker mu(Compile_lock); 893 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 894 895 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by 896 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive 897 // to exclude a compilation of 'method'. 898 if (comp_level == CompLevel_any) { 899 // Both compilers could have ExcludeOption set. Check all combinations. 900 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh); 901 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh); 902 if (excluded_c1 && excluded_c2) { 903 // Compilation of 'method' excluded by both compilers. 904 return false; 905 } 906 907 if (excluded_c1) { 908 // C1 only has ExcludeOption set: Check if compilable with C2. 909 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization); 910 } else if (excluded_c2) { 911 // C2 only has ExcludeOption set: Check if compilable with C1. 912 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple); 913 } 914 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) { 915 // Compilation of 'method' excluded by compiler used for 'comp_level'. 916 return false; 917 } 918 919 return can_be_compiled_at_level(mh, is_osr, (int)comp_level); 920 WB_END 921 922 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 923 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 924 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 925 MutexLocker mu(Compile_lock); 926 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 927 return mh->queued_for_compilation(); 928 WB_END 929 930 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 931 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) { 932 return false; // Intrinsic is not available on a non-existent compilation level. 933 } 934 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 935 if (comp == nullptr) { 936 // Could have compLevel == 0, or !TieredCompilation and incompatible values of TieredStopAtLevel and compLevel. 937 tty->print_cr("WB error: no compiler for requested compilation level %d", compLevel); 938 return false; 939 } 940 941 jmethodID method_id, compilation_context_id; 942 method_id = reflected_method_to_jmid(thread, env, method); 943 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 944 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 945 946 DirectiveSet* directive; 947 if (compilation_context != nullptr) { 948 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 949 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 950 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 951 directive = DirectivesStack::getMatchingDirective(cch, comp); 952 } else { 953 // Calling with null matches default directive 954 directive = DirectivesStack::getDefaultDirective(comp); 955 } 956 bool result = comp->is_intrinsic_available(mh, directive); 957 DirectivesStack::release(directive); 958 return result; 959 WB_END 960 961 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 962 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 963 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 964 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 965 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 966 return (code != nullptr ? code->comp_level() : CompLevel_none); 967 WB_END 968 969 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 970 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 971 CHECK_JNI_EXCEPTION(env); 972 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 973 if (is_osr) { 974 mh->set_not_osr_compilable("WhiteBox", comp_level); 975 } else { 976 mh->set_not_compilable("WhiteBox", comp_level); 977 } 978 WB_END 979 980 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method)) 981 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 982 CHECK_JNI_EXCEPTION_(env, 0); 983 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 984 uint cnt = 0; 985 MethodData* mdo = mh->method_data(); 986 if (mdo != nullptr) { 987 cnt = mdo->decompile_count(); 988 } 989 return cnt; 990 WB_END 991 992 // Get the trap count of a method for a specific reason. If the trap count for 993 // that reason did overflow, this includes the overflow trap count of the method. 994 // If 'reason' is null, the sum of the traps for all reasons will be returned. 995 // This number includes the overflow trap count if the trap count for any reason 996 // did overflow. 997 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj)) 998 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 999 CHECK_JNI_EXCEPTION_(env, 0); 1000 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1001 uint cnt = 0; 1002 MethodData* mdo = mh->method_data(); 1003 if (mdo != nullptr) { 1004 ResourceMark rm(THREAD); 1005 char* reason_str = (reason_obj == nullptr) ? 1006 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj)); 1007 bool overflow = false; 1008 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) { 1009 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) { 1010 cnt = mdo->trap_count(reason); 1011 // Count in the overflow trap count on overflow 1012 if (cnt == (uint)-1) { 1013 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count(); 1014 } 1015 break; 1016 } else if (reason_str == nullptr) { 1017 uint c = mdo->trap_count(reason); 1018 if (c == (uint)-1) { 1019 c = mdo->trap_count_limit(); 1020 if (!overflow) { 1021 // Count overflow trap count just once 1022 overflow = true; 1023 c += mdo->overflow_trap_count(); 1024 } 1025 } 1026 cnt += c; 1027 } 1028 } 1029 } 1030 return cnt; 1031 WB_END 1032 1033 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj)) 1034 if (reason_obj == nullptr && action_obj == nullptr) { 1035 return Deoptimization::total_deoptimization_count(); 1036 } 1037 ResourceMark rm(THREAD); 1038 const char *reason_str = (reason_obj == nullptr) ? 1039 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj)); 1040 const char *action_str = (action_obj == nullptr) ? 1041 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj)); 1042 1043 return Deoptimization::deoptimization_count(reason_str, action_str); 1044 WB_END 1045 1046 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 1047 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1048 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 1049 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1050 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 1051 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 1052 WB_END 1053 1054 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1055 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1056 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1057 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1058 bool result = mh->dont_inline(); 1059 mh->set_dont_inline(value == JNI_TRUE); 1060 return result; 1061 WB_END 1062 1063 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 1064 if (comp_level == CompLevel_any) { 1065 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 1066 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 1067 } else { 1068 return CompileBroker::queue_size(comp_level); 1069 } 1070 WB_END 1071 1072 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1073 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1074 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1075 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1076 bool result = mh->force_inline(); 1077 mh->set_force_inline(value == JNI_TRUE); 1078 return result; 1079 WB_END 1080 1081 #ifdef LINUX 1082 bool WhiteBox::validate_cgroup(const char* proc_cgroups, 1083 const char* proc_self_cgroup, 1084 const char* proc_self_mountinfo, 1085 u1* cg_flags) { 1086 CgroupInfo cg_infos[CG_INFO_LENGTH]; 1087 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups, 1088 proc_self_cgroup, 1089 proc_self_mountinfo, cg_flags); 1090 } 1091 #endif 1092 1093 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) { 1094 // Screen for unavailable/bad comp level or null method 1095 AbstractCompiler* comp = CompileBroker::compiler(comp_level); 1096 if (method == nullptr) { 1097 tty->print_cr("WB error: request to compile null method"); 1098 return false; 1099 } 1100 if (method->is_abstract()) { 1101 tty->print_cr("WB error: request to compile abstract method"); 1102 return false; 1103 } 1104 if (comp_level > CompilationPolicy::highest_compile_level()) { 1105 tty->print_cr("WB error: invalid compilation level %d", comp_level); 1106 return false; 1107 } 1108 if (comp == nullptr) { 1109 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level); 1110 return false; 1111 } 1112 1113 // Check if compilation is blocking 1114 methodHandle mh(THREAD, method); 1115 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 1116 bool is_blocking = !directive->BackgroundCompilationOption; 1117 DirectivesStack::release(directive); 1118 1119 // Compile method and check result 1120 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false); 1121 MutexLocker mu(THREAD, Compile_lock); 1122 bool is_queued = mh->queued_for_compilation(); 1123 if ((!is_blocking && is_queued) || nm != nullptr) { 1124 return true; 1125 } 1126 // Check code again because compilation may be finished before Compile_lock is acquired. 1127 if (bci == InvocationEntryBci) { 1128 nmethod* code = mh->code(); 1129 if (code != nullptr) { 1130 return true; 1131 } 1132 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) { 1133 return true; 1134 } 1135 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level); 1136 mh->print_short_name(tty); 1137 tty->cr(); 1138 if (is_blocking && is_queued) { 1139 tty->print_cr("WB error: blocking compilation is still in queue!"); 1140 } 1141 return false; 1142 } 1143 1144 size_t WhiteBox::get_in_use_monitor_count() { 1145 return ObjectSynchronizer::_in_use_list.count(); 1146 } 1147 1148 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 1149 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1150 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1151 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 1152 WB_END 1153 1154 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 1155 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1156 Method* clinit = ik->class_initializer(); 1157 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) { 1158 return false; 1159 } 1160 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD); 1161 WB_END 1162 1163 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 1164 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1165 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1166 1167 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1168 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 1169 bool result = directive->PrintAssemblyOption; 1170 DirectivesStack::release(directive); 1171 1172 return result; 1173 WB_END 1174 1175 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1176 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1177 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1178 1179 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1180 1181 ResourceMark rm(THREAD); 1182 const char* error_msg = nullptr; 1183 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1184 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 1185 1186 if (m == nullptr) { 1187 assert(error_msg != nullptr, "Always have an error message"); 1188 tty->print_cr("Got error: %s", error_msg); 1189 return -1; // Pattern failed 1190 } 1191 1192 // Pattern works - now check if it matches 1193 int result; 1194 if (m->match(mh, InlineMatcher::force_inline)) { 1195 result = 2; // Force inline match 1196 } else if (m->match(mh, InlineMatcher::dont_inline)) { 1197 result = 1; // Dont inline match 1198 } else { 1199 result = 0; // No match 1200 } 1201 delete m; 1202 return result; 1203 WB_END 1204 1205 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1206 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1207 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1208 1209 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1210 1211 ResourceMark rm; 1212 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1213 1214 const char* error_msg = nullptr; 1215 1216 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false); 1217 if (m == nullptr) { 1218 assert(error_msg != nullptr, "Must have error_msg"); 1219 tty->print_cr("Got error: %s", error_msg); 1220 return -1; 1221 } 1222 1223 // Pattern works - now check if it matches 1224 int result = m->matches(mh); 1225 delete m; 1226 assert(result == 0 || result == 1, "Result out of range"); 1227 return result; 1228 WB_END 1229 1230 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method)) 1231 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1232 CHECK_JNI_EXCEPTION(env); 1233 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1234 1235 MethodData* mdo = mh->method_data(); 1236 if (mdo == nullptr) { 1237 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR); 1238 mdo = mh->method_data(); 1239 } 1240 mdo->init(); 1241 InvocationCounter* icnt = mdo->invocation_counter(); 1242 InvocationCounter* bcnt = mdo->backedge_counter(); 1243 // set i-counter according to CompilationPolicy::is_method_profiled 1244 icnt->set(Tier4MinInvocationThreshold); 1245 bcnt->set(Tier4CompileThreshold); 1246 WB_END 1247 1248 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 1249 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1250 CHECK_JNI_EXCEPTION(env); 1251 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1252 MutexLocker mu(THREAD, Compile_lock); 1253 MethodData* mdo = mh->method_data(); 1254 MethodCounters* mcs = mh->method_counters(); 1255 1256 if (mdo != nullptr) { 1257 mdo->init(); 1258 ResourceMark rm(THREAD); 1259 int arg_count = mdo->method()->size_of_parameters(); 1260 for (int i = 0; i < arg_count; i++) { 1261 mdo->set_arg_modified(i, 0); 1262 } 1263 mdo->clean_method_data(/*always_clean*/true); 1264 } 1265 1266 mh->clear_is_not_c1_compilable(); 1267 mh->clear_is_not_c2_compilable(); 1268 mh->clear_is_not_c2_osr_compilable(); 1269 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 1270 if (mcs != nullptr) { 1271 mcs->clear_counters(); 1272 } 1273 WB_END 1274 1275 template <typename T, int type_enum> 1276 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) { 1277 if (name == nullptr) { 1278 return false; 1279 } 1280 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1281 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1282 CHECK_JNI_EXCEPTION_(env, false); 1283 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name); 1284 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value); 1285 env->ReleaseStringUTFChars(name, flag_name); 1286 return (result == JVMFlag::SUCCESS); 1287 } 1288 1289 template <typename T, int type_enum> 1290 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) { 1291 if (name == nullptr) { 1292 return false; 1293 } 1294 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1295 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1296 CHECK_JNI_EXCEPTION_(env, false); 1297 JVMFlag* flag = JVMFlag::find_flag(flag_name); 1298 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL); 1299 env->ReleaseStringUTFChars(name, flag_name); 1300 return (result == JVMFlag::SUCCESS); 1301 } 1302 1303 template <typename T> 1304 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1305 ResourceMark rm(thread); 1306 jclass clazz = env->FindClass(name->as_C_string()); 1307 CHECK_JNI_EXCEPTION_(env, nullptr); 1308 jmethodID methodID = env->GetStaticMethodID(clazz, 1309 vmSymbols::valueOf_name()->as_C_string(), 1310 sig->as_C_string()); 1311 CHECK_JNI_EXCEPTION_(env, nullptr); 1312 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1313 CHECK_JNI_EXCEPTION_(env, nullptr); 1314 return result; 1315 } 1316 1317 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1318 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1319 } 1320 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1321 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1322 } 1323 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1324 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1325 } 1326 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1327 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1328 }*/ 1329 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1330 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1331 } 1332 1333 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1334 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1335 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1336 CHECK_JNI_EXCEPTION_(env, nullptr); 1337 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name); 1338 env->ReleaseStringUTFChars(name, flag_name); 1339 return result; 1340 } 1341 1342 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1343 const JVMFlag* flag = getVMFlag(thread, env, name); 1344 return (flag != nullptr) && flag->is_constant_in_binary(); 1345 WB_END 1346 1347 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name)) 1348 const JVMFlag* flag = getVMFlag(thread, env, name); 1349 return (flag != nullptr) && flag->is_default(); 1350 WB_END 1351 1352 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1353 const JVMFlag* flag = getVMFlag(thread, env, name); 1354 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker()); 1355 WB_END 1356 1357 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1358 bool result; 1359 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) { 1360 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1361 return booleanBox(thread, env, result); 1362 } 1363 return nullptr; 1364 WB_END 1365 1366 template <typename T, int type_enum> 1367 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) { 1368 T result; 1369 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) { 1370 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1371 return longBox(thread, env, result); 1372 } 1373 return nullptr; 1374 } 1375 1376 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1377 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name); 1378 WB_END 1379 1380 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1381 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name); 1382 WB_END 1383 1384 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1385 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name); 1386 WB_END 1387 1388 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1389 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name); 1390 WB_END 1391 1392 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1393 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name); 1394 WB_END 1395 1396 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1397 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name); 1398 WB_END 1399 1400 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1401 double result; 1402 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) { 1403 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1404 return doubleBox(thread, env, result); 1405 } 1406 return nullptr; 1407 WB_END 1408 1409 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1410 ccstr ccstrResult; 1411 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) { 1412 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1413 jstring result = env->NewStringUTF(ccstrResult); 1414 CHECK_JNI_EXCEPTION_(env, nullptr); 1415 return result; 1416 } 1417 return nullptr; 1418 WB_END 1419 1420 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1421 bool result = value == JNI_TRUE ? true : false; 1422 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result); 1423 WB_END 1424 1425 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1426 int result = checked_cast<int>(value); 1427 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result); 1428 WB_END 1429 1430 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1431 uint result = checked_cast<uint>(value); 1432 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result); 1433 WB_END 1434 1435 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1436 intx result = value; 1437 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result); 1438 WB_END 1439 1440 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1441 uintx result = value; 1442 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result); 1443 WB_END 1444 1445 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1446 uint64_t result = value; 1447 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result); 1448 WB_END 1449 1450 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1451 size_t result = value; 1452 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result); 1453 WB_END 1454 1455 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1456 double result = value; 1457 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result); 1458 WB_END 1459 1460 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1461 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1462 const char* ccstrValue; 1463 if (value == nullptr) { 1464 ccstrValue = nullptr; 1465 } 1466 else { 1467 ccstrValue = env->GetStringUTFChars(value, nullptr); 1468 CHECK_JNI_EXCEPTION(env); 1469 } 1470 { 1471 ccstr param = ccstrValue; 1472 ThreadInVMfromNative ttvfn(thread); // back to VM 1473 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) { 1474 assert(param == nullptr, "old value is freed automatically and not returned"); 1475 } 1476 } 1477 if (value != nullptr) { 1478 env->ReleaseStringUTFChars(value, ccstrValue); 1479 } 1480 WB_END 1481 1482 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1483 WhiteBox::compilation_locked = true; 1484 WB_END 1485 1486 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1487 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1488 WhiteBox::compilation_locked = false; 1489 mo.notify_all(); 1490 WB_END 1491 1492 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1493 ResourceMark rm(THREAD); 1494 int len; 1495 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1496 return (StringTable::lookup(name, len) != nullptr); 1497 WB_END 1498 1499 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1500 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1501 Universe::heap()->collect(GCCause::_wb_full_gc); 1502 #if INCLUDE_G1GC || INCLUDE_SERIALGC 1503 if (UseG1GC || UseSerialGC) { 1504 // Needs to be cleared explicitly for G1 and Serial GC. 1505 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1506 } 1507 #endif // INCLUDE_G1GC || INCLUDE_SERIALGC 1508 WB_END 1509 1510 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1511 Universe::heap()->collect(GCCause::_wb_young_gc); 1512 WB_END 1513 1514 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1515 // static+volatile in order to force the read to happen 1516 // (not be eliminated by the compiler) 1517 static char c; 1518 static volatile char* p; 1519 1520 p = os::reserve_memory(os::vm_allocation_granularity()); 1521 if (p == nullptr) { 1522 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1523 } 1524 1525 c = *p; 1526 WB_END 1527 1528 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1529 const char* features = VM_Version::features_string(); 1530 ThreadToNativeFromVM ttn(thread); 1531 jstring features_string = env->NewStringUTF(features); 1532 1533 CHECK_JNI_EXCEPTION_(env, nullptr); 1534 1535 return features_string; 1536 WB_END 1537 1538 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) { 1539 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1540 return CodeCache::get_code_heap(code)->code_blob_type(); 1541 } 1542 1543 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) { 1544 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1545 return CodeCache::get_code_heap(blob_type); 1546 } 1547 1548 struct CodeBlobStub { 1549 CodeBlobStub(const CodeBlob* blob) : 1550 name(os::strdup(blob->name())), 1551 size(blob->size()), 1552 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))), 1553 address((jlong) blob) { } 1554 ~CodeBlobStub() { os::free((void*) name); } 1555 const char* const name; 1556 const jint size; 1557 const jint blob_type; 1558 const jlong address; 1559 }; 1560 1561 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1562 ResourceMark rm; 1563 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1564 CHECK_JNI_EXCEPTION_(env, nullptr); 1565 jobjectArray result = env->NewObjectArray(4, clazz, nullptr); 1566 1567 jstring name = env->NewStringUTF(cb->name); 1568 CHECK_JNI_EXCEPTION_(env, nullptr); 1569 env->SetObjectArrayElement(result, 0, name); 1570 1571 jobject obj = integerBox(thread, env, cb->size); 1572 CHECK_JNI_EXCEPTION_(env, nullptr); 1573 env->SetObjectArrayElement(result, 1, obj); 1574 1575 obj = integerBox(thread, env, cb->blob_type); 1576 CHECK_JNI_EXCEPTION_(env, nullptr); 1577 env->SetObjectArrayElement(result, 2, obj); 1578 1579 obj = longBox(thread, env, cb->address); 1580 CHECK_JNI_EXCEPTION_(env, nullptr); 1581 env->SetObjectArrayElement(result, 3, obj); 1582 1583 return result; 1584 } 1585 1586 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1587 ResourceMark rm(THREAD); 1588 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1589 CHECK_JNI_EXCEPTION_(env, nullptr); 1590 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1591 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1592 jobjectArray result = nullptr; 1593 if (code == nullptr) { 1594 return result; 1595 } 1596 int comp_level = code->comp_level(); 1597 int insts_size = code->insts_size(); 1598 1599 ThreadToNativeFromVM ttn(thread); 1600 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1601 CHECK_JNI_EXCEPTION_(env, nullptr); 1602 result = env->NewObjectArray(5, clazz, nullptr); 1603 if (result == nullptr) { 1604 return result; 1605 } 1606 1607 CodeBlobStub stub(code); 1608 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1609 CHECK_JNI_EXCEPTION_(env, nullptr); 1610 env->SetObjectArrayElement(result, 0, codeBlob); 1611 1612 jobject level = integerBox(thread, env, comp_level); 1613 CHECK_JNI_EXCEPTION_(env, nullptr); 1614 env->SetObjectArrayElement(result, 1, level); 1615 1616 jbyteArray insts = env->NewByteArray(insts_size); 1617 CHECK_JNI_EXCEPTION_(env, nullptr); 1618 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1619 env->SetObjectArrayElement(result, 2, insts); 1620 1621 jobject id = integerBox(thread, env, code->compile_id()); 1622 CHECK_JNI_EXCEPTION_(env, nullptr); 1623 env->SetObjectArrayElement(result, 3, id); 1624 1625 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1626 CHECK_JNI_EXCEPTION_(env, nullptr); 1627 env->SetObjectArrayElement(result, 4, entry_point); 1628 1629 return result; 1630 WB_END 1631 1632 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) { 1633 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1634 BufferBlob* blob; 1635 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1636 if (full_size < size) { 1637 full_size += align_up(size - full_size, oopSize); 1638 } 1639 { 1640 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1641 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1642 if (blob != nullptr) { 1643 ::new (blob) BufferBlob("WB::DummyBlob", CodeBlobKind::Buffer, full_size); 1644 } 1645 } 1646 // Track memory usage statistic after releasing CodeCache_lock 1647 MemoryService::track_code_cache_memory_usage(); 1648 return blob; 1649 } 1650 1651 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1652 if (size < 0) { 1653 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1654 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1655 } 1656 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type)); 1657 WB_END 1658 1659 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1660 if (addr == 0) { 1661 return; 1662 } 1663 BufferBlob::free((BufferBlob*) addr); 1664 WB_END 1665 1666 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1667 ResourceMark rm; 1668 GrowableArray<CodeBlobStub*> blobs; 1669 { 1670 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1671 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type)); 1672 if (heap == nullptr) { 1673 return nullptr; 1674 } 1675 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1676 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) { 1677 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1678 new (stub) CodeBlobStub(cb); 1679 blobs.append(stub); 1680 } 1681 } 1682 ThreadToNativeFromVM ttn(thread); 1683 jobjectArray result = nullptr; 1684 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1685 CHECK_JNI_EXCEPTION_(env, nullptr); 1686 result = env->NewObjectArray(blobs.length(), clazz, nullptr); 1687 CHECK_JNI_EXCEPTION_(env, nullptr); 1688 if (result == nullptr) { 1689 return result; 1690 } 1691 int i = 0; 1692 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1693 it != blobs.end(); ++it) { 1694 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1695 CHECK_JNI_EXCEPTION_(env, nullptr); 1696 env->SetObjectArrayElement(result, i, obj); 1697 CHECK_JNI_EXCEPTION_(env, nullptr); 1698 ++i; 1699 } 1700 return result; 1701 WB_END 1702 1703 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1704 return CompileBroker::get_compilation_activity_mode(); 1705 WB_END 1706 1707 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1708 if (addr == 0) { 1709 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1710 "WB_GetCodeBlob: addr is null"); 1711 } 1712 ThreadToNativeFromVM ttn(thread); 1713 CodeBlobStub stub((CodeBlob*) addr); 1714 return codeBlob2objectArray(thread, env, &stub); 1715 WB_END 1716 1717 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1718 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1719 CHECK_JNI_EXCEPTION_(env, 0); 1720 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1721 return (jlong) mh->method_data(); 1722 WB_END 1723 1724 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1725 return (jlong) thread->stack_size(); 1726 WB_END 1727 1728 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1729 return (jlong) thread->stack_overflow_state()->stack_available( 1730 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size(); 1731 WB_END 1732 1733 1734 int WhiteBox::array_bytes_to_length(size_t bytes) { 1735 return Array<u1>::bytes_to_length(bytes); 1736 } 1737 1738 /////////////// 1739 // MetaspaceTestContext and MetaspaceTestArena 1740 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit)) 1741 assert(is_aligned(commit_limit, BytesPerWord), 1742 "WB_CreateMetaspaceTestContext: commit_limit is not a multiple of the system word byte size"); 1743 assert(is_aligned(reserve_limit, BytesPerWord), 1744 "WB_CreateMetaspaceTestContext: reserve_limit is not a multiple of the system word byte size"); 1745 metaspace::MetaspaceTestContext* context = 1746 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit / BytesPerWord, 1747 (size_t) reserve_limit / BytesPerWord); 1748 return (jlong)p2i(context); 1749 WB_END 1750 1751 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1752 delete (metaspace::MetaspaceTestContext*) context; 1753 WB_END 1754 1755 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1756 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1757 context0->purge_area(); 1758 WB_END 1759 1760 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1761 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1762 context0->print_on(tty); 1763 WB_END 1764 1765 WB_ENTRY(jlong, WB_GetTotalCommittedBytesInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1766 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1767 return (jlong)context0->committed_words() * BytesPerWord; 1768 WB_END 1769 1770 WB_ENTRY(jlong, WB_GetTotalUsedBytesInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1771 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1772 return (jlong)context0->used_words() * BytesPerWord; 1773 WB_END 1774 1775 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro)) 1776 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ClassMirrorHolderMetaspaceType : Metaspace::StandardMetaspaceType; 1777 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1778 return (jlong)p2i(context0->create_arena(type)); 1779 WB_END 1780 1781 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena)) 1782 delete (metaspace::MetaspaceTestArena*) arena; 1783 WB_END 1784 1785 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong size)) 1786 assert(is_aligned(size, BytesPerWord), 1787 "WB_AllocateFromMetaspaceTestArena: size is not a multiple of the system word byte size"); 1788 metaspace::MetaspaceTestArena *arena0 = (metaspace::MetaspaceTestArena *)arena; 1789 MetaWord *p = arena0->allocate((size_t) size / BytesPerWord); 1790 return (jlong)p2i(p); 1791 WB_END 1792 1793 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong size)) 1794 assert(is_aligned(size, BytesPerWord), 1795 "WB_DeallocateToMetaspaceTestArena: size is not a multiple of the system word byte size"); 1796 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena; 1797 arena0->deallocate((MetaWord*)p, (size_t) size / BytesPerWord); 1798 WB_END 1799 1800 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb)) 1801 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord; 1802 WB_END 1803 1804 WB_ENTRY(jlong, WB_WordSize(JNIEnv* env)) 1805 return (jlong)BytesPerWord; 1806 WB_END 1807 1808 WB_ENTRY(jlong, WB_RootChunkWordSize(JNIEnv* env)) 1809 return (jlong)Metaspace::reserve_alignment_words(); 1810 WB_END 1811 1812 WB_ENTRY(jboolean, WB_IsStaticallyLinked(JNIEnv* env, jobject wb)) 1813 return JVM_IsStaticallyLinked(); 1814 WB_END 1815 1816 ////////////// 1817 1818 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1819 if (size < 0) { 1820 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1821 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1822 } 1823 1824 oop class_loader_oop = JNIHandles::resolve(class_loader); 1825 ClassLoaderData* cld = class_loader_oop != nullptr 1826 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1827 : ClassLoaderData::the_null_class_loader_data(); 1828 1829 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1830 1831 return (jlong)(uintptr_t)metadata; 1832 WB_END 1833 1834 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1835 jstring version, jstring location, jobjectArray packages)) 1836 Handle h_module (THREAD, JNIHandles::resolve(module)); 1837 Modules::define_module(h_module, is_open, version, location, packages, CHECK); 1838 WB_END 1839 1840 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1841 Handle h_from_module (THREAD, JNIHandles::resolve(from_module)); 1842 Handle h_to_module (THREAD, JNIHandles::resolve(to_module)); 1843 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK); 1844 WB_END 1845 1846 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1847 Handle h_module (THREAD, JNIHandles::resolve(module)); 1848 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK); 1849 WB_END 1850 1851 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1852 Handle h_module (THREAD, JNIHandles::resolve(module)); 1853 Modules::add_module_exports(h_module, package, Handle(), CHECK); 1854 WB_END 1855 1856 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1857 Handle h_from_module (THREAD, JNIHandles::resolve(from_module)); 1858 Handle h_source_module (THREAD, JNIHandles::resolve(source_module)); 1859 Modules::add_reads_module(h_from_module, h_source_module, CHECK); 1860 WB_END 1861 1862 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1863 if (inc < 0) { 1864 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1865 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1866 } 1867 1868 jlong max_size_t = (jlong) ((size_t) -1); 1869 if (inc > max_size_t) { 1870 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1871 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1872 } 1873 1874 size_t new_cap_until_GC = 0; 1875 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1876 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1877 if (!success) { 1878 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1879 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1880 "due to contention with another thread"); 1881 } 1882 return (jlong) new_cap_until_GC; 1883 WB_END 1884 1885 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1886 return (jlong) MetaspaceGC::capacity_until_GC(); 1887 WB_END 1888 1889 // The function is only valid when CDS is available. 1890 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb)) 1891 #if INCLUDE_CDS 1892 return (jlong)MetaspaceShared::core_region_alignment(); 1893 #else 1894 ShouldNotReachHere(); 1895 return 0L; 1896 #endif 1897 WB_END 1898 1899 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1900 oop obj_oop = JNIHandles::resolve(obj); 1901 return (jboolean) obj_oop->mark().has_monitor(); 1902 WB_END 1903 1904 WB_ENTRY(jlong, WB_getInUseMonitorCount(JNIEnv* env, jobject wb)) 1905 return (jlong) WhiteBox::get_in_use_monitor_count(); 1906 WB_END 1907 1908 WB_ENTRY(jint, WB_getLockStackCapacity(JNIEnv* env)) 1909 return (jint) LockStack::CAPACITY; 1910 WB_END 1911 1912 WB_ENTRY(jboolean, WB_supportsRecursiveLightweightLocking(JNIEnv* env)) 1913 return (jboolean) VM_Version::supports_recursive_lightweight_locking(); 1914 WB_END 1915 1916 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb)) 1917 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors"); 1918 return ObjectSynchronizer::request_deflate_idle_monitors_from_wb(); 1919 WB_END 1920 1921 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1922 VM_ForceSafepoint force_safepoint_op; 1923 VMThread::execute(&force_safepoint_op); 1924 WB_END 1925 1926 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb)) 1927 nullStream dev_null; 1928 ClassLoaderStatsVMOperation force_op(&dev_null); 1929 VMThread::execute(&force_op); 1930 WB_END 1931 1932 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1933 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1934 return (jlong) ik->constants(); 1935 WB_END 1936 1937 WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass)) 1938 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1939 objArrayOop resolved_refs= ik->constants()->resolved_references(); 1940 return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs); 1941 WB_END 1942 1943 WB_ENTRY(jobjectArray, WB_getObjectsViaKlassOopMaps(JNIEnv* env, jobject wb, jobject thing)) 1944 oop aoop = JNIHandles::resolve(thing); 1945 if (!aoop->is_instance()) { 1946 return nullptr; 1947 } 1948 instanceHandle ih(THREAD, (instanceOop) aoop); 1949 InstanceKlass* klass = InstanceKlass::cast(ih->klass()); 1950 if (klass->nonstatic_oop_map_count() == 0) { 1951 return nullptr; 1952 } 1953 const OopMapBlock* map = klass->start_of_nonstatic_oop_maps(); 1954 const OopMapBlock* const end = map + klass->nonstatic_oop_map_count(); 1955 int oop_count = 0; 1956 while (map < end) { 1957 oop_count += map->count(); 1958 map++; 1959 } 1960 1961 objArrayHandle result_array = 1962 oopFactory::new_objArray_handle(vmClasses::Object_klass(), oop_count, CHECK_NULL); 1963 map = klass->start_of_nonstatic_oop_maps(); 1964 int index = 0; 1965 while (map < end) { 1966 int offset = map->offset(); 1967 for (unsigned int j = 0; j < map->count(); j++) { 1968 result_array->obj_at_put(index++, ih->obj_field(offset)); 1969 offset += heapOopSize; 1970 } 1971 map++; 1972 } 1973 return (jobjectArray)JNIHandles::make_local(THREAD, result_array()); 1974 WB_END 1975 1976 // Collect Object oops but not value objects...loaded from heap 1977 class CollectObjectOops : public BasicOopIterateClosure { 1978 public: 1979 GrowableArray<Handle>* _array; 1980 1981 CollectObjectOops() { 1982 _array = new GrowableArray<Handle>(128); 1983 } 1984 1985 void add_oop(oop o) { 1986 Handle oh = Handle(Thread::current(), o); 1987 if (oh != nullptr && oh->is_inline_type()) { 1988 oh->oop_iterate(this); 1989 } else { 1990 _array->append(oh); 1991 } 1992 } 1993 1994 template <class T> inline void add_oop(T* p) { add_oop(HeapAccess<>::oop_load(p)); } 1995 void do_oop(oop* o) { add_oop(o); } 1996 void do_oop(narrowOop* v) { add_oop(v); } 1997 1998 jobjectArray create_jni_result(JNIEnv* env, TRAPS) { 1999 objArrayHandle result_array = 2000 oopFactory::new_objArray_handle(vmClasses::Object_klass(), _array->length(), CHECK_NULL); 2001 for (int i = 0 ; i < _array->length(); i++) { 2002 result_array->obj_at_put(i, _array->at(i)()); 2003 } 2004 return (jobjectArray)JNIHandles::make_local(THREAD, result_array()); 2005 } 2006 }; 2007 2008 // Collect Object oops but not value objects...loaded from frames 2009 class CollectFrameObjectOops : public BasicOopIterateClosure { 2010 public: 2011 CollectObjectOops _collect; 2012 2013 template <class T> inline void add_oop(T* p) { _collect.add_oop(RawAccess<>::oop_load(p)); } 2014 void do_oop(oop* o) { add_oop(o); } 2015 void do_oop(narrowOop* v) { add_oop(v); } 2016 2017 jobjectArray create_jni_result(JNIEnv* env, TRAPS) { 2018 return _collect.create_jni_result(env, THREAD); 2019 } 2020 }; 2021 2022 // Collect Object oops for the given oop, iterate through value objects 2023 WB_ENTRY(jobjectArray, WB_getObjectsViaOopIterator(JNIEnv* env, jobject wb, jobject thing)) 2024 ResourceMark rm(thread); 2025 Handle objh(thread, JNIHandles::resolve(thing)); 2026 CollectObjectOops collectOops; 2027 objh->oop_iterate(&collectOops); 2028 return collectOops.create_jni_result(env, THREAD); 2029 WB_END 2030 2031 // Collect Object oops for the given frame deep, iterate through value objects 2032 WB_ENTRY(jobjectArray, WB_getObjectsViaFrameOopIterator(JNIEnv* env, jobject wb, jint depth)) 2033 KeepStackGCProcessedMark ksgcpm(THREAD); 2034 ResourceMark rm(THREAD); 2035 CollectFrameObjectOops collectOops; 2036 StackFrameStream sfs(thread, true /* update */, true /* process_frames */); 2037 while (depth > 0) { // Skip the native WB API frame 2038 sfs.next(); 2039 frame* f = sfs.current(); 2040 f->oops_do(&collectOops, nullptr, sfs.register_map()); 2041 depth--; 2042 } 2043 return collectOops.create_jni_result(env, THREAD); 2044 WB_END 2045 2046 WB_ENTRY(jint, WB_getFieldEntriesLength(JNIEnv* env, jobject wb, jclass klass)) 2047 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 2048 ConstantPool* cp = ik->constants(); 2049 if (cp->cache() == nullptr) { 2050 return -1; 2051 } 2052 return cp->resolved_field_entries_length(); 2053 WB_END 2054 2055 WB_ENTRY(jint, WB_getFieldCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index)) 2056 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 2057 ConstantPool* cp = ik->constants(); 2058 if (cp->cache() == nullptr) { 2059 return -1; 2060 } 2061 return cp->resolved_field_entry_at(index)->constant_pool_index(); 2062 WB_END 2063 2064 WB_ENTRY(jint, WB_getMethodEntriesLength(JNIEnv* env, jobject wb, jclass klass)) 2065 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 2066 ConstantPool* cp = ik->constants(); 2067 if (cp->cache() == nullptr) { 2068 return -1; 2069 } 2070 return cp->resolved_method_entries_length(); 2071 WB_END 2072 2073 WB_ENTRY(jint, WB_getMethodCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index)) 2074 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 2075 ConstantPool* cp = ik->constants(); 2076 if (cp->cache() == nullptr) { 2077 return -1; 2078 } 2079 return cp->resolved_method_entry_at(index)->constant_pool_index(); 2080 WB_END 2081 2082 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass)) 2083 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 2084 ConstantPool* cp = ik->constants(); 2085 if (cp->cache() == nullptr) { 2086 return -1; 2087 } 2088 return cp->resolved_indy_entries_length(); 2089 WB_END 2090 2091 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index)) 2092 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 2093 ConstantPool* cp = ik->constants(); 2094 if (cp->cache() == nullptr) { 2095 return -1; 2096 } 2097 return cp->resolved_indy_entry_at(index)->constant_pool_index(); 2098 WB_END 2099 2100 WB_ENTRY(jobject, WB_printClasses(JNIEnv* env, jobject wb, jstring class_name_pattern, jint flags)) 2101 ThreadToNativeFromVM ttnfv(thread); 2102 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr); 2103 ResourceMark rm; 2104 stringStream st; 2105 { 2106 ThreadInVMfromNative ttvfn(thread); // back to VM 2107 ClassPrinter::print_classes(c, flags, &st); 2108 } 2109 jstring result = env->NewStringUTF(st.freeze()); 2110 CHECK_JNI_EXCEPTION_(env, nullptr); 2111 return result; 2112 WB_END 2113 2114 WB_ENTRY(jobject, WB_printMethods(JNIEnv* env, jobject wb, jstring class_name_pattern, jstring method_pattern, jint flags)) 2115 ThreadToNativeFromVM ttnfv(thread); 2116 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr); 2117 const char* m = env->GetStringUTFChars(method_pattern, nullptr); 2118 ResourceMark rm; 2119 stringStream st; 2120 { 2121 ThreadInVMfromNative ttvfn(thread); // back to VM 2122 ClassPrinter::print_methods(c, m, flags, &st); 2123 } 2124 jstring result = env->NewStringUTF(st.freeze()); 2125 CHECK_JNI_EXCEPTION_(env, nullptr); 2126 return result; 2127 WB_END 2128 2129 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 2130 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 2131 VMThread::execute(&clear_ics); 2132 WB_END 2133 2134 template <typename T> 2135 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 2136 assert(value != nullptr, "sanity"); 2137 if (method == nullptr || name == nullptr) { 2138 return false; 2139 } 2140 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 2141 CHECK_JNI_EXCEPTION_(env, false); 2142 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 2143 // can't be in VM when we call JNI 2144 ThreadToNativeFromVM ttnfv(thread); 2145 const char* flag_name = env->GetStringUTFChars(name, nullptr); 2146 CHECK_JNI_EXCEPTION_(env, false); 2147 CompileCommandEnum option = CompilerOracle::string_to_option(flag_name); 2148 env->ReleaseStringUTFChars(name, flag_name); 2149 if (option == CompileCommandEnum::Unknown) { 2150 return false; 2151 } 2152 if (!CompilerOracle::option_matches_type(option, *value)) { 2153 return false; 2154 } 2155 return CompilerOracle::has_option_value(mh, option, *value); 2156 } 2157 2158 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2159 bool result; 2160 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 2161 // can't be in VM when we call JNI 2162 ThreadToNativeFromVM ttnfv(thread); 2163 return booleanBox(thread, env, result); 2164 } 2165 return nullptr; 2166 WB_END 2167 2168 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2169 intx result; 2170 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 2171 // can't be in VM when we call JNI 2172 ThreadToNativeFromVM ttnfv(thread); 2173 return longBox(thread, env, result); 2174 } 2175 return nullptr; 2176 WB_END 2177 2178 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2179 uintx result; 2180 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 2181 // can't be in VM when we call JNI 2182 ThreadToNativeFromVM ttnfv(thread); 2183 return longBox(thread, env, result); 2184 } 2185 return nullptr; 2186 WB_END 2187 2188 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2189 double result; 2190 if (GetMethodOption <double> (thread, env, method, name, &result)) { 2191 // can't be in VM when we call JNI 2192 ThreadToNativeFromVM ttnfv(thread); 2193 return doubleBox(thread, env, result); 2194 } 2195 return nullptr; 2196 WB_END 2197 2198 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2199 ccstr ccstrResult; 2200 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 2201 // can't be in VM when we call JNI 2202 ThreadToNativeFromVM ttnfv(thread); 2203 jstring result = env->NewStringUTF(ccstrResult); 2204 CHECK_JNI_EXCEPTION_(env, nullptr); 2205 return result; 2206 } 2207 return nullptr; 2208 WB_END 2209 2210 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb)) 2211 const char* p = CDSConfig::default_archive_path(); 2212 ThreadToNativeFromVM ttn(thread); 2213 jstring path_string = env->NewStringUTF(p); 2214 2215 CHECK_JNI_EXCEPTION_(env, nullptr); 2216 2217 return path_string; 2218 WB_END 2219 2220 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb)) 2221 return CDSConfig::is_using_archive(); 2222 WB_END 2223 2224 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb)) 2225 #if INCLUDE_CDS 2226 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION; 2227 #else 2228 ShouldNotReachHere(); 2229 return (jint)-1; 2230 #endif 2231 WB_END 2232 2233 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb)) 2234 #if INCLUDE_CDS 2235 return (jint)CURRENT_CDS_ARCHIVE_VERSION; 2236 #else 2237 ShouldNotReachHere(); 2238 return (jint)-1; 2239 #endif 2240 WB_END 2241 2242 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb)) 2243 return FileMapInfo::memory_mapping_failed(); 2244 WB_END 2245 2246 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str)) 2247 ResourceMark rm(THREAD); 2248 oop str_oop = JNIHandles::resolve(str); 2249 int length; 2250 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false)); 2251 return StringTable::lookup_shared(chars, length) == str_oop; 2252 WB_END 2253 2254 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 2255 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2256 WB_END 2257 2258 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env)) 2259 return ArchiveHeapLoader::is_mapped(); 2260 WB_END 2261 2262 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz)) 2263 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 2264 if (!k->is_instance_klass()) { 2265 return; 2266 } 2267 InstanceKlass *ik = InstanceKlass::cast(k); 2268 ik->link_class(THREAD); // may throw verification error 2269 WB_END 2270 2271 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 2272 return ArchiveHeapLoader::is_mapped(); 2273 WB_END 2274 2275 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env)) 2276 #if INCLUDE_CDS 2277 // An exploded build inhibits use of CDS. Therefore, for the 2278 // purpose of testing, the JVM can be treated as not having CDS 2279 // built in at all. 2280 return ClassLoader::has_jrt_entry(); 2281 #else 2282 return false; 2283 #endif // INCLUDE_CDS 2284 WB_END 2285 2286 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env)) 2287 #if COMPILER2_OR_JVMCI 2288 return true; 2289 #else 2290 return false; 2291 #endif 2292 WB_END 2293 2294 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env)) 2295 #if INCLUDE_JVMCI 2296 return JVMCIGlobals::gc_supports_jvmci(); 2297 #else 2298 return false; 2299 #endif 2300 WB_END 2301 2302 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env)) 2303 return !CDSConfig::are_vm_options_incompatible_with_dumping_heap(); 2304 WB_END 2305 2306 2307 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env)) 2308 #if INCLUDE_JFR 2309 return true; 2310 #else 2311 return false; 2312 #endif // INCLUDE_JFR 2313 WB_END 2314 2315 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env)) 2316 #if defined(DTRACE_ENABLED) 2317 return true; 2318 #else 2319 return false; 2320 #endif // DTRACE_ENABLED 2321 WB_END 2322 2323 #if INCLUDE_CDS 2324 2325 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name)) 2326 ResourceMark rm; 2327 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 2328 jint result = (jint)CDSConstants::get_cds_offset(c_name); 2329 return result; 2330 WB_END 2331 2332 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name)) 2333 ResourceMark rm; 2334 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 2335 jint result = (jint)CDSConstants::get_cds_constant(c_name); 2336 return result; 2337 WB_END 2338 2339 #endif // INCLUDE_CDS 2340 2341 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle)) 2342 class ReadMonitorsClosure : public HandshakeClosure { 2343 jboolean _executed; 2344 2345 void do_thread(Thread* th) { 2346 JavaThread* jt = JavaThread::cast(th); 2347 ResourceMark rm; 2348 2349 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>(); 2350 2351 if (!jt->has_last_Java_frame()) { 2352 return; 2353 } 2354 RegisterMap rmap(jt, 2355 RegisterMap::UpdateMap::include, 2356 RegisterMap::ProcessFrames::include, 2357 RegisterMap::WalkContinuation::skip); 2358 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) { 2359 GrowableArray<MonitorInfo*> *monitors = vf->monitors(); 2360 if (monitors != nullptr) { 2361 int len = monitors->length(); 2362 // Walk monitors youngest to oldest 2363 for (int i = len - 1; i >= 0; i--) { 2364 MonitorInfo* mon_info = monitors->at(i); 2365 if (mon_info->eliminated()) continue; 2366 oop owner = mon_info->owner(); 2367 if (owner != nullptr) { 2368 info->append(mon_info); 2369 } 2370 } 2371 } 2372 } 2373 _executed = true; 2374 } 2375 2376 public: 2377 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {} 2378 jboolean executed() const { return _executed; } 2379 }; 2380 2381 ReadMonitorsClosure rmc; 2382 if (thread_handle != nullptr) { 2383 ThreadsListHandle tlh; 2384 JavaThread* target = nullptr; 2385 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2386 if (is_alive) { 2387 Handshake::execute(&rmc, &tlh, target); 2388 } 2389 } 2390 return rmc.executed(); 2391 WB_END 2392 2393 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 2394 class TraceSelfClosure : public HandshakeClosure { 2395 jint _num_threads_completed; 2396 2397 void do_thread(Thread* th) { 2398 JavaThread* jt = JavaThread::cast(th); 2399 ResourceMark rm; 2400 2401 jt->print_on(tty); 2402 jt->print_stack_on(tty); 2403 tty->cr(); 2404 Atomic::inc(&_num_threads_completed); 2405 } 2406 2407 public: 2408 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {} 2409 2410 jint num_threads_completed() const { return _num_threads_completed; } 2411 }; 2412 TraceSelfClosure tsc(Thread::current()); 2413 2414 if (all_threads) { 2415 Handshake::execute(&tsc); 2416 } else if (thread_handle != nullptr) { 2417 ThreadsListHandle tlh; 2418 JavaThread* target = nullptr; 2419 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2420 if (is_alive) { 2421 Handshake::execute(&tsc, &tlh, target); 2422 } 2423 } 2424 return tsc.num_threads_completed(); 2425 WB_END 2426 2427 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle)) 2428 class TraceSelfClosure : public AsyncHandshakeClosure { 2429 JavaThread* _self; 2430 void do_thread(Thread* th) { 2431 assert(th->is_Java_thread(), "sanity"); 2432 // AsynchHandshake handshakes are only executed by target. 2433 assert(_self == th, "Must be"); 2434 assert(Thread::current() == th, "Must be"); 2435 JavaThread* jt = JavaThread::cast(th); 2436 ResourceMark rm; 2437 jt->print_on(tty); 2438 jt->print_stack_on(tty); 2439 tty->cr(); 2440 } 2441 2442 public: 2443 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {} 2444 }; 2445 if (thread_handle != nullptr) { 2446 ThreadsListHandle tlh; 2447 JavaThread* target = nullptr; 2448 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2449 if (is_alive) { 2450 TraceSelfClosure* tsc = new TraceSelfClosure(target); 2451 Handshake::execute(tsc, target); 2452 } 2453 } 2454 WB_END 2455 2456 static volatile int _emulated_lock = 0; 2457 2458 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender)) 2459 JavaThread* self = JavaThread::current(); 2460 2461 { 2462 // Before trying to acquire the lock transition into a safepoint safe state. 2463 // Otherwise if either suspender or suspendee blocks for a safepoint 2464 // in ~ThreadBlockInVM the other one could loop forever trying to acquire 2465 // the lock without allowing the safepoint to progress. 2466 ThreadBlockInVM tbivm(self); 2467 2468 // We will deadlock here if we are 'suspender' and 'suspendee' 2469 // suspended in ~ThreadBlockInVM. This verifies we only suspend 2470 // at the right place. 2471 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {} 2472 assert(_emulated_lock == 1, "Must be locked"); 2473 2474 // Sleep much longer in suspendee to force situation where 2475 // 'suspender' is waiting above to acquire lock. 2476 os::naked_short_sleep(suspender ? 1 : 10); 2477 } 2478 Atomic::store(&_emulated_lock, 0); 2479 WB_END 2480 2481 // Some convenience methods to deal with objects from java 2482 int WhiteBox::offset_for_field(const char* field_name, oop object, 2483 Symbol* signature_symbol) { 2484 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid"); 2485 2486 //Get the class of our object 2487 Klass* arg_klass = object->klass(); 2488 //Turn it into an instance-klass 2489 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 2490 2491 //Create symbols to look for in the class 2492 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name); 2493 2494 //To be filled in with an offset of the field we're looking for 2495 fieldDescriptor fd; 2496 2497 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 2498 if (res == nullptr) { 2499 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 2500 name_symbol->as_C_string()); 2501 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 2502 } 2503 2504 //fetch the field at the offset we've found 2505 int dest_offset = fd.offset(); 2506 2507 return dest_offset; 2508 } 2509 2510 2511 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 2512 int offset = offset_for_field(field_name, object, 2513 vmSymbols::string_signature()); 2514 oop string = object->obj_field(offset); 2515 if (string == nullptr) { 2516 return nullptr; 2517 } 2518 const char* ret = java_lang_String::as_utf8_string(string); 2519 return ret; 2520 } 2521 2522 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 2523 int offset = 2524 offset_for_field(field_name, object, vmSymbols::bool_signature()); 2525 bool ret = (object->bool_field(offset) == JNI_TRUE); 2526 return ret; 2527 } 2528 2529 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 2530 ResourceMark rm; 2531 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass)); 2532 const char* klass_name = klass->external_name(); 2533 2534 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 2535 2536 // one by one registration natives for exception catching 2537 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 2538 CHECK_JNI_EXCEPTION(env); 2539 for (int i = 0, n = method_count; i < n; ++i) { 2540 // Skip dummy entries 2541 if (method_array[i].fnPtr == nullptr) continue; 2542 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 2543 jthrowable throwable_obj = env->ExceptionOccurred(); 2544 if (throwable_obj != nullptr) { 2545 env->ExceptionClear(); 2546 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 2547 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 2548 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 2549 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s", 2550 klass_name, method_array[i].name, method_array[i].signature); 2551 } 2552 } else { 2553 // Registration failed unexpectedly. 2554 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered", 2555 klass_name, method_array[i].name, method_array[i].signature); 2556 env->UnregisterNatives(wbclass); 2557 break; 2558 } 2559 } 2560 } 2561 } 2562 2563 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 2564 // can't be in VM when we call JNI 2565 ThreadToNativeFromVM ttnfv(thread); 2566 const char* dir = env->GetStringUTFChars(compDirect, nullptr); 2567 CHECK_JNI_EXCEPTION_(env, 0); 2568 int ret; 2569 { 2570 ThreadInVMfromNative ttvfn(thread); // back to VM 2571 ret = DirectivesParser::parse_string(dir, tty); 2572 } 2573 env->ReleaseStringUTFChars(compDirect, dir); 2574 // -1 for error parsing directive. Return 0 as number of directives added. 2575 if (ret == -1) { 2576 ret = 0; 2577 } 2578 return (jint) ret; 2579 WB_END 2580 2581 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 2582 DirectivesStack::pop(count); 2583 WB_END 2584 2585 // Checks that the library libfile has the noexecstack bit set. 2586 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 2587 jboolean ret = false; 2588 #ifdef LINUX 2589 // Can't be in VM when we call JNI. 2590 ThreadToNativeFromVM ttnfv(thread); 2591 const char* lf = env->GetStringUTFChars(libfile, nullptr); 2592 CHECK_JNI_EXCEPTION_(env, 0); 2593 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 2594 env->ReleaseStringUTFChars(libfile, lf); 2595 #endif 2596 return ret; 2597 WB_END 2598 2599 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 2600 LINUX_ONLY(return OSContainer::is_containerized();) 2601 return false; 2602 WB_END 2603 2604 // Physical memory of the host machine (including containers) 2605 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o)) 2606 LINUX_ONLY(return os::Linux::physical_memory();) 2607 return os::physical_memory(); 2608 WB_END 2609 2610 // Physical swap of the host machine (including containers), Linux only. 2611 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o)) 2612 LINUX_ONLY(return (jlong)os::Linux::host_swap();) 2613 return -1; // Not used/implemented on other platforms 2614 WB_END 2615 2616 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env, 2617 jobject o, 2618 jstring proc_cgroups, 2619 jstring proc_self_cgroup, 2620 jstring proc_self_mountinfo)) 2621 jint ret = 0; 2622 #ifdef LINUX 2623 ThreadToNativeFromVM ttnfv(thread); 2624 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, nullptr); 2625 CHECK_JNI_EXCEPTION_(env, 0); 2626 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr); 2627 CHECK_JNI_EXCEPTION_(env, 0); 2628 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr); 2629 CHECK_JNI_EXCEPTION_(env, 0); 2630 u1 cg_type_flags = 0; 2631 // This sets cg_type_flags 2632 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags); 2633 ret = (jint)cg_type_flags; 2634 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups); 2635 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup); 2636 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo); 2637 #endif 2638 return ret; 2639 WB_END 2640 2641 // Available cpus of the host machine, Linux only. 2642 // Used in container testing. 2643 WB_ENTRY(jint, WB_HostCPUs(JNIEnv* env, jobject o)) 2644 LINUX_ONLY(return os::Linux::active_processor_count();) 2645 return -1; // Not used/implemented on other platforms 2646 WB_END 2647 2648 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 2649 os::print_os_info(tty); 2650 WB_END 2651 2652 // Elf decoder 2653 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 2654 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 2655 ElfFile::_do_not_cache_elf_section = true; 2656 #endif 2657 WB_END 2658 2659 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o)) 2660 return (jlong) ResolvedMethodTable::items_count(); 2661 WB_END 2662 2663 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror)) 2664 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror)); 2665 // Return size in bytes. 2666 return k->size() * wordSize; 2667 WB_END 2668 2669 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java. 2670 // It explains how the thread's priority field is used for test state coordination. 2671 // 2672 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle)) 2673 oop target_oop = JNIHandles::resolve_non_null(target_handle); 2674 jlong tid = java_lang_Thread::thread_id(target_oop); 2675 JavaThread* target = java_lang_Thread::thread(target_oop); 2676 2677 // Grab a ThreadsListHandle to protect the target thread whilst terminating 2678 ThreadsListHandle tlh; 2679 2680 // Look up the target thread by tid to ensure it is present 2681 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid); 2682 if (t == nullptr) { 2683 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!"); 2684 } 2685 2686 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected"); 2687 // Allow target to terminate by boosting priority 2688 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1)); 2689 2690 // Now wait for the target to terminate 2691 while (!target->is_terminated()) { 2692 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint 2693 os::naked_short_sleep(0); 2694 } 2695 2696 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated"); 2697 2698 // Now release the GC inducing thread - we have to re-resolve the external oop that 2699 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now. 2700 oop original = JNIHandles::resolve_non_null(target_handle); 2701 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2)); 2702 2703 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:"); 2704 2705 // The Java code should be creating garbage and triggering GC, which would potentially move 2706 // the threadObj oop. If the exiting thread is properly protected then its threadObj should 2707 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to 2708 // kick in. 2709 for (int i = 0; i < 5; i++) { 2710 oop original = JNIHandles::resolve_non_null(target_handle); 2711 oop current = t->threadObj(); 2712 if (original != current) { 2713 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i); 2714 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!"); 2715 } else { 2716 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i); 2717 ThreadBlockInVM tbivm(thread); 2718 os::naked_short_sleep(50); 2719 } 2720 } 2721 WB_END 2722 2723 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map)) 2724 ResourceMark rm; // for verify 2725 stringStream st; 2726 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) { 2727 frame* current_frame = fst.current(); 2728 if (log) { 2729 current_frame->print_value_on(&st); 2730 } 2731 current_frame->verify(fst.register_map()); 2732 } 2733 if (log) { 2734 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames"); 2735 tty->print_raw(st.freeze()); 2736 tty->print_cr("[WhiteBox::VerifyFrames] Done"); 2737 } 2738 WB_END 2739 2740 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb)) 2741 #if INCLUDE_JVMTI 2742 return JNI_TRUE; 2743 #else 2744 return JNI_FALSE; 2745 #endif 2746 WB_END 2747 2748 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time)) 2749 os::naked_short_sleep(time); 2750 WB_END 2751 2752 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o)) 2753 ThreadToNativeFromVM ttn(thread); 2754 jstring info_string = env->NewStringUTF(XSTR(LIBC)); 2755 CHECK_JNI_EXCEPTION_(env, nullptr); 2756 return info_string; 2757 WB_END 2758 2759 WB_ENTRY(void, WB_PinObject(JNIEnv* env, jobject wb, jobject o)) 2760 #if INCLUDE_G1GC 2761 if (!UseG1GC) { 2762 ShouldNotReachHere(); 2763 return; 2764 } 2765 oop obj = JNIHandles::resolve(o); 2766 G1CollectedHeap::heap()->pin_object(thread, obj); 2767 #else 2768 ShouldNotReachHere(); 2769 #endif // INCLUDE_G1GC 2770 WB_END 2771 2772 WB_ENTRY(void, WB_UnpinObject(JNIEnv* env, jobject wb, jobject o)) 2773 #if INCLUDE_G1GC 2774 if (!UseG1GC) { 2775 ShouldNotReachHere(); 2776 return; 2777 } 2778 oop obj = JNIHandles::resolve(o); 2779 G1CollectedHeap::heap()->unpin_object(thread, obj); 2780 #else 2781 ShouldNotReachHere(); 2782 #endif // INCLUDE_G1GC 2783 WB_END 2784 2785 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable)) 2786 if (!Continuations::enabled()) { 2787 tty->print_cr("WB error: must be Continuations::enabled()!"); 2788 return JNI_FALSE; 2789 } 2790 jboolean result = false; 2791 #if INCLUDE_JVMTI 2792 if (enable) { 2793 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti(); 2794 } else { 2795 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti(); 2796 } 2797 #endif 2798 return result; 2799 WB_END 2800 2801 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size)) 2802 void* const from = (void*)addr; 2803 void* const to = (void*)(addr + size); 2804 if (from > to) { 2805 os::pretouch_memory(from, to, os::vm_page_size()); 2806 } 2807 WB_END 2808 2809 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target)) 2810 ClassLoaderDataGraph::safepoint_and_clean_metaspaces(); 2811 WB_END 2812 2813 // Reports resident set size (RSS) in bytes 2814 WB_ENTRY(jlong, WB_Rss(JNIEnv* env, jobject o)) 2815 return os::rss(); 2816 WB_END 2817 2818 #define CC (char*) 2819 2820 static JNINativeMethod methods[] = { 2821 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 2822 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 2823 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 2824 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 2825 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 2826 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 2827 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 2828 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 2829 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 2830 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses }, 2831 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount }, 2832 {CC"parseCommandLine0", 2833 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;", 2834 (void*) &WB_ParseCommandLine 2835 }, 2836 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2837 (void*)&WB_AddToBootstrapClassLoaderSearch}, 2838 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2839 (void*)&WB_AddToSystemClassLoaderSearch}, 2840 {CC"getCompressedOopsMaxHeapSize", CC"()J", 2841 (void*)&WB_GetCompressedOopsMaxHeapSize}, 2842 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 2843 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 2844 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 2845 #if INCLUDE_CDS 2846 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName}, 2847 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName}, 2848 #endif 2849 #if INCLUDE_G1GC 2850 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 2851 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles}, 2852 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 2853 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 2854 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 2855 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 2856 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 2857 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 2858 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit}, 2859 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 2860 (void*)&WB_G1AuxiliaryMemoryUsage }, 2861 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount }, 2862 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds }, 2863 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 2864 #endif // INCLUDE_G1GC 2865 #if INCLUDE_PARALLELGC 2866 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 2867 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 2868 #endif 2869 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 2870 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 2871 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType}, 2872 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 2873 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 2874 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 2875 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 2876 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 2877 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 2878 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 2879 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena }, 2880 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena }, 2881 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc }, 2882 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 2883 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized}, 2884 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 2885 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 2886 (void*)&WB_DeoptimizeMethod }, 2887 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 2888 (void*)&WB_IsMethodCompiled }, 2889 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 2890 (void*)&WB_IsMethodCompilable}, 2891 {CC"isMethodQueuedForCompilation0", 2892 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 2893 {CC"isIntrinsicAvailable0", 2894 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2895 (void*)&WB_IsIntrinsicAvailable}, 2896 {CC"makeMethodNotCompilable0", 2897 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2898 {CC"testSetDontInlineMethod0", 2899 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2900 {CC"getMethodCompilationLevel0", 2901 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2902 {CC"getMethodDecompileCount0", 2903 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount}, 2904 {CC"getMethodTrapCount0", 2905 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2906 (void*)&WB_GetMethodTrapCount}, 2907 {CC"getDeoptCount0", 2908 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount}, 2909 {CC"getMethodEntryBci0", 2910 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2911 {CC"getCompileQueueSize", 2912 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2913 {CC"testSetForceInlineMethod0", 2914 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2915 {CC"enqueueMethodForCompilation0", 2916 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2917 {CC"enqueueInitializerForCompilation0", 2918 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2919 {CC"markMethodProfiled", 2920 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled}, 2921 {CC"clearMethodState0", 2922 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2923 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2924 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2925 {CC"matchesMethod", 2926 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2927 (void*)&WB_MatchesMethod}, 2928 {CC"matchesInline", 2929 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2930 (void*)&WB_MatchesInline}, 2931 {CC"shouldPrintAssembly", 2932 CC"(Ljava/lang/reflect/Executable;I)Z", 2933 (void*)&WB_ShouldPrintAssembly}, 2934 2935 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2936 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag}, 2937 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2938 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2939 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2940 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2941 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2942 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2943 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2944 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2945 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2946 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2947 (void*)&WB_SetStringVMFlag}, 2948 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2949 (void*)&WB_GetBooleanVMFlag}, 2950 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2951 (void*)&WB_GetIntVMFlag}, 2952 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2953 (void*)&WB_GetUintVMFlag}, 2954 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2955 (void*)&WB_GetIntxVMFlag}, 2956 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2957 (void*)&WB_GetUintxVMFlag}, 2958 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2959 (void*)&WB_GetUint64VMFlag}, 2960 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2961 (void*)&WB_GetSizeTVMFlag}, 2962 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2963 (void*)&WB_GetDoubleVMFlag}, 2964 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2965 (void*)&WB_GetStringVMFlag}, 2966 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2967 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2968 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2969 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2970 {CC"allocateMetaspace", 2971 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2972 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2973 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2974 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment }, 2975 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2976 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2977 (void*)&WB_GetNMethod }, 2978 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2979 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2980 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2981 {CC"getCompilationActivityMode", 2982 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2983 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2984 (void*)&WB_GetMethodData }, 2985 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2986 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2987 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2988 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2989 (void*)&WB_DefineModule }, 2990 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2991 (void*)&WB_AddModuleExports }, 2992 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2993 (void*)&WB_AddReadsModule }, 2994 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2995 (void*)&WB_AddModuleExportsToAllUnnamed }, 2996 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2997 (void*)&WB_AddModuleExportsToAll }, 2998 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors }, 2999 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 3000 {CC"getInUseMonitorCount", CC"()J", (void*)&WB_getInUseMonitorCount }, 3001 {CC"getLockStackCapacity", CC"()I", (void*)&WB_getLockStackCapacity }, 3002 {CC"supportsRecursiveLightweightLocking", CC"()Z", (void*)&WB_supportsRecursiveLightweightLocking }, 3003 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 3004 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint }, 3005 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 3006 {CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 3007 {CC"getObjectsViaKlassOopMaps0", 3008 CC"(Ljava/lang/Object;)[Ljava/lang/Object;", (void*)&WB_getObjectsViaKlassOopMaps}, 3009 {CC"getObjectsViaOopIterator0", 3010 CC"(Ljava/lang/Object;)[Ljava/lang/Object;",(void*)&WB_getObjectsViaOopIterator}, 3011 {CC"getObjectsViaFrameOopIterator", 3012 CC"(I)[Ljava/lang/Object;", (void*)&WB_getObjectsViaFrameOopIterator}, 3013 {CC"getFieldEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getFieldEntriesLength}, 3014 {CC"getFieldCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getFieldCPIndex}, 3015 {CC"getMethodEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getMethodEntriesLength}, 3016 {CC"getMethodCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getMethodCPIndex}, 3017 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength}, 3018 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex}, 3019 {CC"printClasses0", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printClasses}, 3020 {CC"printMethods0", CC"(Ljava/lang/String;Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printMethods}, 3021 {CC"getMethodBooleanOption", 3022 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 3023 (void*)&WB_GetMethodBooleaneOption}, 3024 {CC"getMethodIntxOption", 3025 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 3026 (void*)&WB_GetMethodIntxOption}, 3027 {CC"getMethodUintxOption", 3028 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 3029 (void*)&WB_GetMethodUintxOption}, 3030 {CC"getMethodDoubleOption", 3031 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 3032 (void*)&WB_GetMethodDoubleOption}, 3033 {CC"getMethodStringOption", 3034 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 3035 (void*)&WB_GetMethodStringOption}, 3036 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;", 3037 (void*)&WB_GetDefaultArchivePath}, 3038 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion}, 3039 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion}, 3040 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled}, 3041 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString }, 3042 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 3043 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped }, 3044 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass}, 3045 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 3046 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded }, 3047 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded }, 3048 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded }, 3049 {CC"hasLibgraal", CC"()Z", (void*)&WB_HasLibgraal }, 3050 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded }, 3051 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC}, 3052 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive }, 3053 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed }, 3054 3055 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 3056 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors }, 3057 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 3058 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack }, 3059 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock}, 3060 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread }, 3061 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames }, 3062 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 3063 (void*)&WB_AddCompilerDirective }, 3064 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 3065 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported}, 3066 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler}, 3067 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected}, 3068 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically}, 3069 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints}, 3070 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl}, 3071 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl}, 3072 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle}, 3073 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z", 3074 (void*)&WB_ConcurrentGCRunTo}, 3075 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 3076 (void*)&WB_CheckLibSpecifiesNoexecstack}, 3077 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 3078 {CC"validateCgroup", 3079 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I", 3080 (void*)&WB_ValidateCgroup }, 3081 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory }, 3082 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap }, 3083 {CC"hostCPUs", CC"()I", (void*)&WB_HostCPUs }, 3084 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 3085 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 3086 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount }, 3087 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize}, 3088 3089 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext}, 3090 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext}, 3091 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext}, 3092 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext}, 3093 {CC"getTotalCommittedBytesInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedBytesInMetaspaceTestContext}, 3094 {CC"getTotalUsedBytesInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedBytesInMetaspaceTestContext}, 3095 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext}, 3096 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena}, 3097 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena}, 3098 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena}, 3099 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize}, 3100 3101 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded}, 3102 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe}, 3103 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName}, 3104 3105 {CC"pinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_PinObject}, 3106 {CC"unpinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_UnpinObject}, 3107 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode}, 3108 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory}, 3109 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces}, 3110 {CC"rss", CC"()J", (void*)&WB_Rss}, 3111 {CC"printString", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_PrintString}, 3112 {CC"lockAndStuckInSafepoint", CC"()V", (void*)&WB_TakeLockAndHangInSafepoint}, 3113 {CC"wordSize", CC"()J", (void*)&WB_WordSize}, 3114 {CC"rootChunkWordSize", CC"()J", (void*)&WB_RootChunkWordSize}, 3115 {CC"isStatic", CC"()Z", (void*)&WB_IsStaticallyLinked} 3116 }; 3117 3118 3119 #undef CC 3120 3121 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 3122 { 3123 if (WhiteBoxAPI) { 3124 // Make sure that wbclass is loaded by the null classloader 3125 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass))); 3126 Handle loader(THREAD, ik->class_loader()); 3127 if (loader.is_null()) { 3128 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 3129 WhiteBox::set_used(); 3130 } 3131 } 3132 } 3133 JVM_END