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