1 /* 2 * Copyright (c) 2012, 2023, 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/classLoaderDataGraph.hpp" 33 #include "classfile/classLoaderStats.hpp" 34 #include "classfile/javaClasses.inline.hpp" 35 #include "classfile/modules.hpp" 36 #include "classfile/protectionDomainCache.hpp" 37 #include "classfile/stringTable.hpp" 38 #include "classfile/symbolTable.hpp" 39 #include "classfile/systemDictionary.hpp" 40 #include "classfile/vmSymbols.hpp" 41 #include "code/codeCache.hpp" 42 #include "compiler/compilationPolicy.hpp" 43 #include "compiler/directivesParser.hpp" 44 #include "compiler/methodMatcher.hpp" 45 #include "gc/shared/concurrentGCBreakpoints.hpp" 46 #include "gc/shared/gcConfig.hpp" 47 #include "gc/shared/gcLocker.inline.hpp" 48 #include "gc/shared/genArguments.hpp" 49 #include "gc/shared/genCollectedHeap.hpp" 50 #include "jvmtifiles/jvmtiEnv.hpp" 51 #include "logging/log.hpp" 52 #include "memory/iterator.hpp" 53 #include "memory/metadataFactory.hpp" 54 #include "memory/iterator.inline.hpp" 55 #include "memory/metaspace/testHelpers.hpp" 56 #include "memory/metaspaceUtils.hpp" 57 #include "memory/oopFactory.hpp" 58 #include "memory/resourceArea.hpp" 59 #include "memory/universe.hpp" 60 #include "oops/array.hpp" 61 #include "oops/compressedOops.hpp" 62 #include "oops/compressedOops.inline.hpp" 63 #include "oops/constantPool.inline.hpp" 64 #include "oops/klass.inline.hpp" 65 #include "oops/method.inline.hpp" 66 #include "oops/objArrayKlass.hpp" 67 #include "oops/objArrayOop.inline.hpp" 68 #include "oops/oop.inline.hpp" 69 #include "oops/objArrayOop.inline.hpp" 70 #include "oops/typeArrayOop.inline.hpp" 71 #include "prims/jvmtiEnvBase.hpp" 72 #include "prims/resolvedMethodTable.hpp" 73 #include "prims/wbtestmethods/parserTests.hpp" 74 #include "prims/whitebox.inline.hpp" 75 #include "runtime/arguments.hpp" 76 #include "runtime/atomic.hpp" 77 #include "runtime/deoptimization.hpp" 78 #include "runtime/fieldDescriptor.inline.hpp" 79 #include "runtime/flags/jvmFlag.hpp" 80 #include "runtime/flags/jvmFlagAccess.hpp" 81 #include "runtime/frame.inline.hpp" 82 #include "runtime/handles.inline.hpp" 83 #include "runtime/handshake.hpp" 84 #include "runtime/interfaceSupport.inline.hpp" 85 #include "runtime/javaCalls.hpp" 86 #include "runtime/javaThread.inline.hpp" 87 #include "runtime/jniHandles.inline.hpp" 88 #include "runtime/os.hpp" 89 #include "runtime/stackFrameStream.inline.hpp" 90 #include "runtime/synchronizer.hpp" 91 #include "runtime/threadSMR.hpp" 92 #include "runtime/vframe.hpp" 93 #include "runtime/vm_version.hpp" 94 #include "services/mallocSiteTable.hpp" 95 #include "services/memoryService.hpp" 96 #include "services/memTracker.hpp" 97 #include "utilities/align.hpp" 98 #include "utilities/debug.hpp" 99 #include "utilities/elfFile.hpp" 100 #include "utilities/exceptions.hpp" 101 #include "utilities/macros.hpp" 102 #include "utilities/nativeCallStack.hpp" 103 #include "utilities/ostream.hpp" 104 #if INCLUDE_G1GC 105 #include "gc/g1/g1Arguments.hpp" 106 #include "gc/g1/g1CollectedHeap.inline.hpp" 107 #include "gc/g1/g1ConcurrentMark.hpp" 108 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp" 109 #include "gc/g1/heapRegionManager.hpp" 110 #include "gc/g1/heapRegionRemSet.inline.hpp" 111 #endif // INCLUDE_G1GC 112 #if INCLUDE_PARALLELGC 113 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 114 #endif // INCLUDE_PARALLELGC 115 #if INCLUDE_ZGC 116 #include "gc/z/zAddress.inline.hpp" 117 #endif // INCLUDE_ZGC 118 #if INCLUDE_JVMCI 119 #include "jvmci/jvmciEnv.hpp" 120 #include "jvmci/jvmciRuntime.hpp" 121 #endif 122 #ifdef LINUX 123 #include "os_linux.hpp" 124 #include "osContainer_linux.hpp" 125 #include "cgroupSubsystem_linux.hpp" 126 #endif 127 128 #define CHECK_JNI_EXCEPTION_(env, value) \ 129 do { \ 130 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 131 THREAD->clear_pending_jni_exception_check(); \ 132 if (HAS_PENDING_EXCEPTION) { \ 133 return(value); \ 134 } \ 135 } while (0) 136 137 #define CHECK_JNI_EXCEPTION(env) \ 138 do { \ 139 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 140 THREAD->clear_pending_jni_exception_check(); \ 141 if (HAS_PENDING_EXCEPTION) { \ 142 return; \ 143 } \ 144 } while (0) 145 146 bool WhiteBox::_used = false; 147 volatile bool WhiteBox::compilation_locked = false; 148 149 class VM_WhiteBoxOperation : public VM_Operation { 150 public: 151 VM_WhiteBoxOperation() { } 152 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 153 bool allow_nested_vm_operations() const { return true; } 154 }; 155 156 157 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 158 return (jlong)(void*)JNIHandles::resolve(obj); 159 WB_END 160 161 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 162 return heapOopSize; 163 WB_END 164 165 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 166 return (jint)os::vm_page_size(); 167 WB_END 168 169 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 170 return os::vm_allocation_granularity(); 171 WB_END 172 173 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 174 return os::large_page_size(); 175 WB_END 176 177 class WBIsKlassAliveClosure : public LockedClassesDo { 178 Symbol* _name; 179 int _count; 180 public: 181 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {} 182 183 void do_klass(Klass* k) { 184 Symbol* ksym = k->name(); 185 if (ksym->fast_compare(_name) == 0) { 186 _count++; 187 } else if (k->is_instance_klass()) { 188 // Need special handling for hidden classes because the JVM 189 // appends "+<hex-address>" to hidden class names. 190 InstanceKlass *ik = InstanceKlass::cast(k); 191 if (ik->is_hidden()) { 192 ResourceMark rm; 193 char* k_name = ksym->as_C_string(); 194 // Find the first '+' char and truncate the string at that point. 195 // NOTE: This will not work correctly if the original hidden class 196 // name contains a '+'. 197 char* plus_char = strchr(k_name, '+'); 198 if (plus_char != nullptr) { 199 *plus_char = 0; 200 char* c_name = _name->as_C_string(); 201 if (strcmp(c_name, k_name) == 0) { 202 _count++; 203 } 204 } 205 } 206 } 207 } 208 209 int count() const { 210 return _count; 211 } 212 }; 213 214 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name)) 215 oop h_name = JNIHandles::resolve(name); 216 if (h_name == nullptr) { 217 return 0; 218 } 219 Symbol* sym = java_lang_String::as_symbol(h_name); 220 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 221 222 WBIsKlassAliveClosure closure(sym); 223 ClassLoaderDataGraph::classes_do(&closure); 224 225 // Return the count of alive classes with this name. 226 return closure.count(); 227 WB_END 228 229 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name)) 230 oop h_name = JNIHandles::resolve(name); 231 if (h_name == nullptr) { 232 return 0; 233 } 234 Symbol* sym = java_lang_String::as_symbol(h_name); 235 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 236 return (jint)sym->refcount(); 237 WB_END 238 239 240 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 241 #if INCLUDE_JVMTI 242 ResourceMark rm; 243 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 244 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 245 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 246 assert(err == JVMTI_ERROR_NONE, "must not fail"); 247 #endif 248 } 249 WB_END 250 251 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 252 #if INCLUDE_JVMTI 253 ResourceMark rm; 254 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 255 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 256 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 257 assert(err == JVMTI_ERROR_NONE, "must not fail"); 258 #endif 259 } 260 WB_END 261 262 263 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 264 return (jlong)Arguments::max_heap_for_compressed_oops(); 265 } 266 WB_END 267 268 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 269 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " " 270 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 271 MinHeapSize, 272 InitialHeapSize, 273 MaxHeapSize, 274 SpaceAlignment, 275 HeapAlignment); 276 } 277 WB_END 278 279 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 280 size_t granularity = os::vm_allocation_granularity(); 281 ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size()); 282 VirtualSpace vs; 283 vs.initialize(rhs, 50 * granularity); 284 285 // Check if constraints are complied 286 if (!( UseCompressedOops && rhs.base() != nullptr && 287 CompressedOops::base() != nullptr && 288 CompressedOops::use_implicit_null_checks() )) { 289 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 290 "\tUseCompressedOops is %d\n" 291 "\trhs.base() is " PTR_FORMAT "\n" 292 "\tCompressedOops::base() is " PTR_FORMAT "\n" 293 "\tCompressedOops::use_implicit_null_checks() is %d", 294 UseCompressedOops, 295 p2i(rhs.base()), 296 p2i(CompressedOops::base()), 297 CompressedOops::use_implicit_null_checks()); 298 return; 299 } 300 tty->print_cr("Reading from no access area... "); 301 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 302 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 303 WB_END 304 305 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 306 size_t magnitude, size_t iterations) { 307 size_t granularity = os::vm_allocation_granularity(); 308 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size()); 309 VirtualSpace vs; 310 if (!vs.initialize(rhs, 0)) { 311 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 312 return 3; 313 } 314 315 int seed = os::random(); 316 tty->print_cr("Random seed is %d", seed); 317 318 for (size_t i = 0; i < iterations; i++) { 319 320 // Whether we will shrink or grow 321 bool shrink = os::random() % 2L == 0; 322 323 // Get random delta to resize virtual space 324 size_t delta = (size_t)os::random() % magnitude; 325 326 // If we are about to shrink virtual space below zero, then expand instead 327 if (shrink && vs.committed_size() < delta) { 328 shrink = false; 329 } 330 331 // Resizing by delta 332 if (shrink) { 333 vs.shrink_by(delta); 334 } else { 335 // If expanding fails expand_by will silently return false 336 vs.expand_by(delta, true); 337 } 338 } 339 return 0; 340 } 341 342 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 343 jlong reserved_space_size, jlong magnitude, jlong iterations)) 344 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 345 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 346 iterations); 347 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 348 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 349 return 1; 350 } 351 352 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 353 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 354 if (sizeof(size_t) < sizeof(jlong)) { 355 jlong size_t_max_value = (jlong)SIZE_MAX; 356 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 357 || iterations > size_t_max_value) { 358 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 359 return 2; 360 } 361 } 362 363 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 364 (size_t) magnitude, (size_t) iterations); 365 WB_END 366 367 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name)) 368 return GCConfig::is_gc_supported((CollectedHeap::Name)name); 369 WB_END 370 371 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name)) 372 #if INCLUDE_JVMCI 373 if (EnableJVMCI) { 374 // Enter the JVMCI env that will be used by the CompileBroker. 375 JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__); 376 return jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name); 377 } 378 #endif 379 return false; 380 WB_END 381 382 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name)) 383 return GCConfig::is_gc_selected((CollectedHeap::Name)name); 384 WB_END 385 386 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o)) 387 return GCConfig::is_gc_selected_ergonomically(); 388 WB_END 389 390 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 391 oop p = JNIHandles::resolve(obj); 392 #if INCLUDE_G1GC 393 if (UseG1GC) { 394 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 395 const HeapRegion* hr = g1h->heap_region_containing(p); 396 return !(hr->is_young()); 397 } 398 #endif 399 #if INCLUDE_PARALLELGC 400 if (UseParallelGC) { 401 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 402 return !psh->is_in_young(p); 403 } 404 #endif 405 #if INCLUDE_ZGC 406 if (UseZGC) { 407 if (ZGenerational) { 408 return ZHeap::heap()->is_old(to_zaddress(p)); 409 } else { 410 return Universe::heap()->is_in(p); 411 } 412 } 413 #endif 414 #if INCLUDE_SHENANDOAHGC 415 if (UseShenandoahGC) { 416 return Universe::heap()->is_in(p); 417 } 418 #endif 419 GenCollectedHeap* gch = GenCollectedHeap::heap(); 420 return !gch->is_in_young(p); 421 WB_END 422 423 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 424 oop p = JNIHandles::resolve(obj); 425 return p->size() * HeapWordSize; 426 WB_END 427 428 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 429 return (jlong)SpaceAlignment; 430 WB_END 431 432 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 433 return (jlong)HeapAlignment; 434 WB_END 435 436 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o)) 437 return Universe::heap()->supports_concurrent_gc_breakpoints(); 438 WB_END 439 440 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o)) 441 ConcurrentGCBreakpoints::acquire_control(); 442 WB_END 443 444 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o)) 445 ConcurrentGCBreakpoints::release_control(); 446 WB_END 447 448 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o)) 449 ConcurrentGCBreakpoints::run_to_idle(); 450 WB_END 451 452 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at)) 453 Handle h_name(THREAD, JNIHandles::resolve(at)); 454 ResourceMark rm; 455 const char* c_name = java_lang_String::as_utf8_string(h_name()); 456 return ConcurrentGCBreakpoints::run_to(c_name); 457 WB_END 458 459 #if INCLUDE_G1GC 460 461 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 462 if (UseG1GC) { 463 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 464 oop result = JNIHandles::resolve(obj); 465 const HeapRegion* hr = g1h->heap_region_containing(result); 466 return hr->is_humongous(); 467 } 468 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 469 WB_END 470 471 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 472 if (UseG1GC) { 473 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 474 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 475 return hr->is_humongous(); 476 } 477 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 478 WB_END 479 480 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 481 if (UseG1GC) { 482 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 483 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 484 return hr->is_free(); 485 } 486 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 487 WB_END 488 489 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 490 if (UseG1GC) { 491 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 492 size_t nr = g1h->max_regions(); 493 return (jlong)nr; 494 } 495 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 496 WB_END 497 498 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 499 if (UseG1GC) { 500 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 501 size_t nr = g1h->num_free_regions(); 502 return (jlong)nr; 503 } 504 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 505 WB_END 506 507 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 508 if (UseG1GC) { 509 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 510 return g1h->concurrent_mark()->cm_thread()->in_progress(); 511 } 512 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 513 WB_END 514 515 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o)) 516 if (UseG1GC) { 517 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 518 G1ConcurrentMark* cm = g1h->concurrent_mark(); 519 return cm->completed_mark_cycles(); 520 } 521 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled"); 522 WB_END 523 524 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 525 if (UseG1GC) { 526 return (jint)HeapRegion::GrainBytes; 527 } 528 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 529 WB_END 530 531 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o)) 532 if (UseG1GC) { 533 return G1CollectedHeap::heap()->has_uncommittable_regions(); 534 } 535 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled"); 536 WB_END 537 538 #endif // INCLUDE_G1GC 539 540 #if INCLUDE_PARALLELGC 541 542 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 543 if (UseParallelGC) { 544 return GenAlignment; 545 } 546 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 547 WB_END 548 549 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 550 if (UseParallelGC) { 551 return GenAlignment; 552 } 553 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 554 WB_END 555 556 #endif // INCLUDE_PARALLELGC 557 558 #if INCLUDE_G1GC 559 560 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 561 if (UseG1GC) { 562 ResourceMark rm(THREAD); 563 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 564 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 565 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 566 return JNIHandles::make_local(THREAD, h()); 567 } 568 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 569 WB_END 570 571 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o)) 572 if (UseG1GC) { 573 G1NUMA* numa = G1NUMA::numa(); 574 return (jint)numa->num_active_nodes(); 575 } 576 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled"); 577 WB_END 578 579 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o)) 580 if (UseG1GC) { 581 G1NUMA* numa = G1NUMA::numa(); 582 int num_node_ids = (int)numa->num_active_nodes(); 583 const int* node_ids = numa->node_ids(); 584 585 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL); 586 for (int i = 0; i < num_node_ids; i++) { 587 result->int_at_put(i, (jint)node_ids[i]); 588 } 589 return (jintArray) JNIHandles::make_local(THREAD, result); 590 } 591 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled"); 592 WB_END 593 594 class OldRegionsLivenessClosure: public HeapRegionClosure { 595 596 private: 597 const int _liveness; 598 size_t _total_count; 599 size_t _total_memory; 600 size_t _total_memory_to_free; 601 602 public: 603 OldRegionsLivenessClosure(int liveness) : 604 _liveness(liveness), 605 _total_count(0), 606 _total_memory(0), 607 _total_memory_to_free(0) { } 608 609 size_t total_count() { return _total_count; } 610 size_t total_memory() { return _total_memory; } 611 size_t total_memory_to_free() { return _total_memory_to_free; } 612 613 bool do_heap_region(HeapRegion* r) { 614 if (r->is_old()) { 615 size_t live = r->live_bytes(); 616 size_t size = r->used(); 617 size_t reg_size = HeapRegion::GrainBytes; 618 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 619 _total_memory += size; 620 ++_total_count; 621 if (size == reg_size) { 622 // We don't include non-full regions since they are unlikely included in mixed gc 623 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 624 _total_memory_to_free += size - live; 625 } 626 } 627 } 628 return false; 629 } 630 }; 631 632 633 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 634 if (!UseG1GC) { 635 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 636 } 637 if (liveness < 0) { 638 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 639 } 640 641 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 642 OldRegionsLivenessClosure rli(liveness); 643 g1h->heap_region_iterate(&rli); 644 645 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 646 result->long_at_put(0, rli.total_count()); 647 result->long_at_put(1, rli.total_memory()); 648 result->long_at_put(2, rli.total_memory_to_free()); 649 return (jlongArray) JNIHandles::make_local(THREAD, result); 650 WB_END 651 652 #endif // INCLUDE_G1GC 653 654 // Alloc memory using the test memory type so that we can use that to see if 655 // NMT picks it up correctly 656 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 657 jlong addr = 0; 658 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 659 return addr; 660 WB_END 661 662 // Alloc memory with pseudo call stack. The test can create pseudo malloc 663 // allocation site to stress the malloc tracking. 664 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 665 address pc = (address)(size_t)pseudo_stack; 666 NativeCallStack stack(&pc, 1); 667 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 668 WB_END 669 670 // Alloc memory with pseudo call stack and specific memory type. 671 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type)) 672 address pc = (address)(size_t)pseudo_stack; 673 NativeCallStack stack(&pc, 1); 674 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack); 675 WB_END 676 677 // Free the memory allocated by NMTAllocTest 678 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 679 os::free((void*)(uintptr_t)mem); 680 WB_END 681 682 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 683 jlong addr = 0; 684 685 addr = (jlong)(uintptr_t)os::reserve_memory(size); 686 MemTracker::record_virtual_memory_type((address)addr, mtTest); 687 688 return addr; 689 WB_END 690 691 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size)) 692 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size); 693 MemTracker::record_virtual_memory_type((address)addr, mtTest); 694 695 return addr; 696 WB_END 697 698 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 699 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 700 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 701 WB_END 702 703 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 704 os::uncommit_memory((char *)(uintptr_t)addr, size); 705 WB_END 706 707 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 708 os::release_memory((char *)(uintptr_t)addr, size); 709 WB_END 710 711 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 712 int hash_size = MallocSiteTable::hash_buckets(); 713 assert(hash_size > 0, "NMT hash_size should be > 0"); 714 return (jint)hash_size; 715 WB_END 716 717 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size)) 718 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size)); 719 return (jlong)arena; 720 WB_END 721 722 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena)) 723 Arena* a = (Arena*)arena; 724 delete a; 725 WB_END 726 727 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size)) 728 Arena* a = (Arena*)arena; 729 a->Amalloc(size_t(size)); 730 WB_END 731 732 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 733 assert(method != nullptr, "method should not be null"); 734 ThreadToNativeFromVM ttn(thread); 735 return env->FromReflectedMethod(method); 736 } 737 738 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 739 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 740 private: 741 int _result; 742 const bool _make_not_entrant; 743 public: 744 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 745 _result(0), _make_not_entrant(make_not_entrant) { } 746 int result() const { return _result; } 747 748 void doit() { 749 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 750 if (t->has_last_Java_frame()) { 751 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) { 752 frame* f = fst.current(); 753 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 754 Deoptimization::deoptimize(t, *f); 755 if (_make_not_entrant) { 756 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 757 assert(cm != nullptr, "sanity check"); 758 cm->make_not_entrant(); 759 } 760 ++_result; 761 } 762 } 763 } 764 } 765 } 766 }; 767 768 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 769 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 770 VMThread::execute(&op); 771 return op.result(); 772 WB_END 773 774 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth)) 775 bool result = false; 776 if (thread->has_last_Java_frame()) { 777 RegisterMap reg_map(thread, 778 RegisterMap::UpdateMap::include, 779 RegisterMap::ProcessFrames::include, 780 RegisterMap::WalkContinuation::skip); 781 javaVFrame *jvf = thread->last_java_vframe(®_map); 782 for (jint d = 0; d < depth && jvf != nullptr; d++) { 783 jvf = jvf->java_sender(); 784 } 785 result = jvf != nullptr && jvf->fr().is_deoptimized_frame(); 786 } 787 return result; 788 WB_END 789 790 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 791 DeoptimizationScope deopt_scope; 792 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope); 793 deopt_scope.deoptimize_marked(); 794 WB_END 795 796 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 797 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 798 int result = 0; 799 CHECK_JNI_EXCEPTION_(env, result); 800 801 DeoptimizationScope deopt_scope; 802 { 803 MutexLocker mu(Compile_lock); 804 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 805 if (is_osr) { 806 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh()); 807 } else { 808 MutexLocker ml(CompiledMethod_lock, Mutex::_no_safepoint_check_flag); 809 if (mh->code() != nullptr) { 810 deopt_scope.mark(mh->code()); 811 ++result; 812 } 813 } 814 CodeCache::mark_for_deoptimization(&deopt_scope, mh()); 815 } 816 817 deopt_scope.deoptimize_marked(); 818 819 return result; 820 WB_END 821 822 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 823 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 824 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 825 MutexLocker mu(Compile_lock); 826 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 827 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 828 if (code == nullptr) { 829 return JNI_FALSE; 830 } 831 return !code->is_marked_for_deoptimization(); 832 WB_END 833 834 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) { 835 if (comp == nullptr) { 836 return true; 837 } 838 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 839 bool exclude = directive->ExcludeOption; 840 DirectivesStack::release(directive); 841 return exclude; 842 } 843 844 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) { 845 if (is_osr) { 846 return CompilationPolicy::can_be_osr_compiled(mh, level); 847 } else { 848 return CompilationPolicy::can_be_compiled(mh, level); 849 } 850 } 851 852 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 853 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) { 854 return false; 855 } 856 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 857 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 858 MutexLocker mu(Compile_lock); 859 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 860 861 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by 862 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive 863 // to exclude a compilation of 'method'. 864 if (comp_level == CompLevel_any) { 865 // Both compilers could have ExcludeOption set. Check all combinations. 866 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh); 867 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh); 868 if (excluded_c1 && excluded_c2) { 869 // Compilation of 'method' excluded by both compilers. 870 return false; 871 } 872 873 if (excluded_c1) { 874 // C1 only has ExcludeOption set: Check if compilable with C2. 875 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization); 876 } else if (excluded_c2) { 877 // C2 only has ExcludeOption set: Check if compilable with C1. 878 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple); 879 } 880 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) { 881 // Compilation of 'method' excluded by compiler used for 'comp_level'. 882 return false; 883 } 884 885 return can_be_compiled_at_level(mh, is_osr, (int)comp_level); 886 WB_END 887 888 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 889 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 890 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 891 MutexLocker mu(Compile_lock); 892 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 893 return mh->queued_for_compilation(); 894 WB_END 895 896 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 897 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) { 898 return false; // Intrinsic is not available on a non-existent compilation level. 899 } 900 jmethodID method_id, compilation_context_id; 901 method_id = reflected_method_to_jmid(thread, env, method); 902 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 903 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 904 905 DirectiveSet* directive; 906 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 907 assert(comp != nullptr, "compiler not available"); 908 if (compilation_context != nullptr) { 909 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 910 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 911 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 912 directive = DirectivesStack::getMatchingDirective(cch, comp); 913 } else { 914 // Calling with null matches default directive 915 directive = DirectivesStack::getDefaultDirective(comp); 916 } 917 bool result = comp->is_intrinsic_available(mh, directive); 918 DirectivesStack::release(directive); 919 return result; 920 WB_END 921 922 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 923 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 924 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 925 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 926 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 927 return (code != nullptr ? code->comp_level() : CompLevel_none); 928 WB_END 929 930 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 931 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 932 CHECK_JNI_EXCEPTION(env); 933 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 934 if (is_osr) { 935 mh->set_not_osr_compilable("WhiteBox", comp_level); 936 } else { 937 mh->set_not_compilable("WhiteBox", comp_level); 938 } 939 WB_END 940 941 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method)) 942 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 943 CHECK_JNI_EXCEPTION_(env, 0); 944 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 945 uint cnt = 0; 946 MethodData* mdo = mh->method_data(); 947 if (mdo != nullptr) { 948 cnt = mdo->decompile_count(); 949 } 950 return cnt; 951 WB_END 952 953 // Get the trap count of a method for a specific reason. If the trap count for 954 // that reason did overflow, this includes the overflow trap count of the method. 955 // If 'reason' is null, the sum of the traps for all reasons will be returned. 956 // This number includes the overflow trap count if the trap count for any reason 957 // did overflow. 958 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj)) 959 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 960 CHECK_JNI_EXCEPTION_(env, 0); 961 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 962 uint cnt = 0; 963 MethodData* mdo = mh->method_data(); 964 if (mdo != nullptr) { 965 ResourceMark rm(THREAD); 966 char* reason_str = (reason_obj == nullptr) ? 967 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj)); 968 bool overflow = false; 969 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) { 970 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) { 971 cnt = mdo->trap_count(reason); 972 // Count in the overflow trap count on overflow 973 if (cnt == (uint)-1) { 974 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count(); 975 } 976 break; 977 } else if (reason_str == nullptr) { 978 uint c = mdo->trap_count(reason); 979 if (c == (uint)-1) { 980 c = mdo->trap_count_limit(); 981 if (!overflow) { 982 // Count overflow trap count just once 983 overflow = true; 984 c += mdo->overflow_trap_count(); 985 } 986 } 987 cnt += c; 988 } 989 } 990 } 991 return cnt; 992 WB_END 993 994 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj)) 995 if (reason_obj == nullptr && action_obj == nullptr) { 996 return Deoptimization::total_deoptimization_count(); 997 } 998 ResourceMark rm(THREAD); 999 const char *reason_str = (reason_obj == nullptr) ? 1000 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj)); 1001 const char *action_str = (action_obj == nullptr) ? 1002 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj)); 1003 1004 return Deoptimization::deoptimization_count(reason_str, action_str); 1005 WB_END 1006 1007 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 1008 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1009 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 1010 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1011 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 1012 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 1013 WB_END 1014 1015 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1016 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1017 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1018 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1019 bool result = mh->dont_inline(); 1020 mh->set_dont_inline(value == JNI_TRUE); 1021 return result; 1022 WB_END 1023 1024 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 1025 if (comp_level == CompLevel_any) { 1026 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 1027 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 1028 } else { 1029 return CompileBroker::queue_size(comp_level); 1030 } 1031 WB_END 1032 1033 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1034 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1035 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1036 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1037 bool result = mh->force_inline(); 1038 mh->set_force_inline(value == JNI_TRUE); 1039 return result; 1040 WB_END 1041 1042 #ifdef LINUX 1043 bool WhiteBox::validate_cgroup(const char* proc_cgroups, 1044 const char* proc_self_cgroup, 1045 const char* proc_self_mountinfo, 1046 u1* cg_flags) { 1047 CgroupInfo cg_infos[CG_INFO_LENGTH]; 1048 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups, 1049 proc_self_cgroup, 1050 proc_self_mountinfo, cg_flags); 1051 } 1052 #endif 1053 1054 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) { 1055 // Screen for unavailable/bad comp level or null method 1056 AbstractCompiler* comp = CompileBroker::compiler(comp_level); 1057 if (method == nullptr) { 1058 tty->print_cr("WB error: request to compile null method"); 1059 return false; 1060 } 1061 if (comp_level > CompilationPolicy::highest_compile_level()) { 1062 tty->print_cr("WB error: invalid compilation level %d", comp_level); 1063 return false; 1064 } 1065 if (comp == nullptr) { 1066 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level); 1067 return false; 1068 } 1069 1070 // Check if compilation is blocking 1071 methodHandle mh(THREAD, method); 1072 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 1073 bool is_blocking = !directive->BackgroundCompilationOption; 1074 DirectivesStack::release(directive); 1075 1076 // Compile method and check result 1077 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false); 1078 MutexLocker mu(THREAD, Compile_lock); 1079 bool is_queued = mh->queued_for_compilation(); 1080 if ((!is_blocking && is_queued) || nm != nullptr) { 1081 return true; 1082 } 1083 // Check code again because compilation may be finished before Compile_lock is acquired. 1084 if (bci == InvocationEntryBci) { 1085 CompiledMethod* code = mh->code(); 1086 if (code != nullptr && code->as_nmethod_or_null() != nullptr) { 1087 return true; 1088 } 1089 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) { 1090 return true; 1091 } 1092 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level); 1093 mh->print_short_name(tty); 1094 tty->cr(); 1095 if (is_blocking && is_queued) { 1096 tty->print_cr("WB error: blocking compilation is still in queue!"); 1097 } 1098 return false; 1099 } 1100 1101 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 1102 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1103 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1104 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 1105 WB_END 1106 1107 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 1108 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1109 Method* clinit = ik->class_initializer(); 1110 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) { 1111 return false; 1112 } 1113 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD); 1114 WB_END 1115 1116 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 1117 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1118 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1119 1120 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1121 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 1122 bool result = directive->PrintAssemblyOption; 1123 DirectivesStack::release(directive); 1124 1125 return result; 1126 WB_END 1127 1128 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1129 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1130 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1131 1132 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1133 1134 ResourceMark rm(THREAD); 1135 const char* error_msg = nullptr; 1136 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1137 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 1138 1139 if (m == nullptr) { 1140 assert(error_msg != nullptr, "Always have an error message"); 1141 tty->print_cr("Got error: %s", error_msg); 1142 return -1; // Pattern failed 1143 } 1144 1145 // Pattern works - now check if it matches 1146 int result; 1147 if (m->match(mh, InlineMatcher::force_inline)) { 1148 result = 2; // Force inline match 1149 } else if (m->match(mh, InlineMatcher::dont_inline)) { 1150 result = 1; // Dont inline match 1151 } else { 1152 result = 0; // No match 1153 } 1154 delete m; 1155 return result; 1156 WB_END 1157 1158 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1159 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1160 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1161 1162 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1163 1164 ResourceMark rm; 1165 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1166 1167 const char* error_msg = nullptr; 1168 1169 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false); 1170 if (m == nullptr) { 1171 assert(error_msg != nullptr, "Must have error_msg"); 1172 tty->print_cr("Got error: %s", error_msg); 1173 return -1; 1174 } 1175 1176 // Pattern works - now check if it matches 1177 int result = m->matches(mh); 1178 delete m; 1179 assert(result == 0 || result == 1, "Result out of range"); 1180 return result; 1181 WB_END 1182 1183 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method)) 1184 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1185 CHECK_JNI_EXCEPTION(env); 1186 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1187 1188 MethodData* mdo = mh->method_data(); 1189 if (mdo == nullptr) { 1190 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR); 1191 mdo = mh->method_data(); 1192 } 1193 mdo->init(); 1194 InvocationCounter* icnt = mdo->invocation_counter(); 1195 InvocationCounter* bcnt = mdo->backedge_counter(); 1196 // set i-counter according to CompilationPolicy::is_method_profiled 1197 icnt->set(Tier4MinInvocationThreshold); 1198 bcnt->set(Tier4CompileThreshold); 1199 WB_END 1200 1201 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 1202 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1203 CHECK_JNI_EXCEPTION(env); 1204 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1205 MutexLocker mu(THREAD, Compile_lock); 1206 MethodData* mdo = mh->method_data(); 1207 MethodCounters* mcs = mh->method_counters(); 1208 1209 if (mdo != nullptr) { 1210 mdo->init(); 1211 ResourceMark rm(THREAD); 1212 int arg_count = mdo->method()->size_of_parameters(); 1213 for (int i = 0; i < arg_count; i++) { 1214 mdo->set_arg_modified(i, 0); 1215 } 1216 MutexLocker mu(THREAD, mdo->extra_data_lock()); 1217 mdo->clean_method_data(/*always_clean*/true); 1218 } 1219 1220 mh->clear_is_not_c1_compilable(); 1221 mh->clear_is_not_c2_compilable(); 1222 mh->clear_is_not_c2_osr_compilable(); 1223 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 1224 if (mcs != nullptr) { 1225 mcs->clear_counters(); 1226 } 1227 WB_END 1228 1229 template <typename T, int type_enum> 1230 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) { 1231 if (name == nullptr) { 1232 return false; 1233 } 1234 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1235 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1236 CHECK_JNI_EXCEPTION_(env, false); 1237 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name); 1238 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value); 1239 env->ReleaseStringUTFChars(name, flag_name); 1240 return (result == JVMFlag::SUCCESS); 1241 } 1242 1243 template <typename T, int type_enum> 1244 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) { 1245 if (name == nullptr) { 1246 return false; 1247 } 1248 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1249 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1250 CHECK_JNI_EXCEPTION_(env, false); 1251 JVMFlag* flag = JVMFlag::find_flag(flag_name); 1252 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL); 1253 env->ReleaseStringUTFChars(name, flag_name); 1254 return (result == JVMFlag::SUCCESS); 1255 } 1256 1257 template <typename T> 1258 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1259 ResourceMark rm(thread); 1260 jclass clazz = env->FindClass(name->as_C_string()); 1261 CHECK_JNI_EXCEPTION_(env, nullptr); 1262 jmethodID methodID = env->GetStaticMethodID(clazz, 1263 vmSymbols::valueOf_name()->as_C_string(), 1264 sig->as_C_string()); 1265 CHECK_JNI_EXCEPTION_(env, nullptr); 1266 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1267 CHECK_JNI_EXCEPTION_(env, nullptr); 1268 return result; 1269 } 1270 1271 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1272 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1273 } 1274 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1275 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1276 } 1277 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1278 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1279 } 1280 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1281 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1282 }*/ 1283 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1284 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1285 } 1286 1287 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1288 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1289 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1290 CHECK_JNI_EXCEPTION_(env, nullptr); 1291 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name); 1292 env->ReleaseStringUTFChars(name, flag_name); 1293 return result; 1294 } 1295 1296 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1297 const JVMFlag* flag = getVMFlag(thread, env, name); 1298 return (flag != nullptr) && flag->is_constant_in_binary(); 1299 WB_END 1300 1301 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1302 const JVMFlag* flag = getVMFlag(thread, env, name); 1303 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker()); 1304 WB_END 1305 1306 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1307 bool result; 1308 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) { 1309 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1310 return booleanBox(thread, env, result); 1311 } 1312 return nullptr; 1313 WB_END 1314 1315 template <typename T, int type_enum> 1316 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) { 1317 T result; 1318 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) { 1319 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1320 return longBox(thread, env, result); 1321 } 1322 return nullptr; 1323 } 1324 1325 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1326 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name); 1327 WB_END 1328 1329 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1330 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name); 1331 WB_END 1332 1333 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1334 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name); 1335 WB_END 1336 1337 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1338 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name); 1339 WB_END 1340 1341 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1342 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name); 1343 WB_END 1344 1345 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1346 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name); 1347 WB_END 1348 1349 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1350 double result; 1351 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) { 1352 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1353 return doubleBox(thread, env, result); 1354 } 1355 return nullptr; 1356 WB_END 1357 1358 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1359 ccstr ccstrResult; 1360 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) { 1361 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1362 jstring result = env->NewStringUTF(ccstrResult); 1363 CHECK_JNI_EXCEPTION_(env, nullptr); 1364 return result; 1365 } 1366 return nullptr; 1367 WB_END 1368 1369 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1370 bool result = value == JNI_TRUE ? true : false; 1371 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result); 1372 WB_END 1373 1374 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1375 int result = value; 1376 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result); 1377 WB_END 1378 1379 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1380 uint result = value; 1381 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result); 1382 WB_END 1383 1384 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1385 intx result = value; 1386 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result); 1387 WB_END 1388 1389 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1390 uintx result = value; 1391 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result); 1392 WB_END 1393 1394 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1395 uint64_t result = value; 1396 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result); 1397 WB_END 1398 1399 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1400 size_t result = value; 1401 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result); 1402 WB_END 1403 1404 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1405 double result = value; 1406 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result); 1407 WB_END 1408 1409 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1410 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1411 const char* ccstrValue; 1412 if (value == nullptr) { 1413 ccstrValue = nullptr; 1414 } 1415 else { 1416 ccstrValue = env->GetStringUTFChars(value, nullptr); 1417 CHECK_JNI_EXCEPTION(env); 1418 } 1419 { 1420 ccstr param = ccstrValue; 1421 ThreadInVMfromNative ttvfn(thread); // back to VM 1422 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) { 1423 assert(param == nullptr, "old value is freed automatically and not returned"); 1424 } 1425 } 1426 if (value != nullptr) { 1427 env->ReleaseStringUTFChars(value, ccstrValue); 1428 } 1429 WB_END 1430 1431 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1432 WhiteBox::compilation_locked = true; 1433 WB_END 1434 1435 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1436 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1437 WhiteBox::compilation_locked = false; 1438 mo.notify_all(); 1439 WB_END 1440 1441 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1442 ResourceMark rm(THREAD); 1443 int len; 1444 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1445 return (StringTable::lookup(name, len) != nullptr); 1446 WB_END 1447 1448 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1449 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1450 Universe::heap()->collect(GCCause::_wb_full_gc); 1451 #if INCLUDE_G1GC 1452 if (UseG1GC) { 1453 // Needs to be cleared explicitly for G1 1454 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1455 } 1456 #endif // INCLUDE_G1GC 1457 WB_END 1458 1459 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1460 Universe::heap()->collect(GCCause::_wb_young_gc); 1461 WB_END 1462 1463 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1464 // static+volatile in order to force the read to happen 1465 // (not be eliminated by the compiler) 1466 static char c; 1467 static volatile char* p; 1468 1469 p = os::reserve_memory(os::vm_allocation_granularity()); 1470 if (p == nullptr) { 1471 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1472 } 1473 1474 c = *p; 1475 WB_END 1476 1477 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1478 const char* features = VM_Version::features_string(); 1479 ThreadToNativeFromVM ttn(thread); 1480 jstring features_string = env->NewStringUTF(features); 1481 1482 CHECK_JNI_EXCEPTION_(env, nullptr); 1483 1484 return features_string; 1485 WB_END 1486 1487 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) { 1488 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1489 return CodeCache::get_code_heap(code)->code_blob_type(); 1490 } 1491 1492 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) { 1493 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1494 return CodeCache::get_code_heap(blob_type); 1495 } 1496 1497 struct CodeBlobStub { 1498 CodeBlobStub(const CodeBlob* blob) : 1499 name(os::strdup(blob->name())), 1500 size(blob->size()), 1501 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))), 1502 address((jlong) blob) { } 1503 ~CodeBlobStub() { os::free((void*) name); } 1504 const char* const name; 1505 const jint size; 1506 const jint blob_type; 1507 const jlong address; 1508 }; 1509 1510 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1511 ResourceMark rm; 1512 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1513 CHECK_JNI_EXCEPTION_(env, nullptr); 1514 jobjectArray result = env->NewObjectArray(4, clazz, nullptr); 1515 1516 jstring name = env->NewStringUTF(cb->name); 1517 CHECK_JNI_EXCEPTION_(env, nullptr); 1518 env->SetObjectArrayElement(result, 0, name); 1519 1520 jobject obj = integerBox(thread, env, cb->size); 1521 CHECK_JNI_EXCEPTION_(env, nullptr); 1522 env->SetObjectArrayElement(result, 1, obj); 1523 1524 obj = integerBox(thread, env, cb->blob_type); 1525 CHECK_JNI_EXCEPTION_(env, nullptr); 1526 env->SetObjectArrayElement(result, 2, obj); 1527 1528 obj = longBox(thread, env, cb->address); 1529 CHECK_JNI_EXCEPTION_(env, nullptr); 1530 env->SetObjectArrayElement(result, 3, obj); 1531 1532 return result; 1533 } 1534 1535 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1536 ResourceMark rm(THREAD); 1537 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1538 CHECK_JNI_EXCEPTION_(env, nullptr); 1539 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1540 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1541 jobjectArray result = nullptr; 1542 if (code == nullptr) { 1543 return result; 1544 } 1545 int comp_level = code->comp_level(); 1546 int insts_size = code->insts_size(); 1547 1548 ThreadToNativeFromVM ttn(thread); 1549 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1550 CHECK_JNI_EXCEPTION_(env, nullptr); 1551 result = env->NewObjectArray(5, clazz, nullptr); 1552 if (result == nullptr) { 1553 return result; 1554 } 1555 1556 CodeBlobStub stub(code); 1557 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1558 CHECK_JNI_EXCEPTION_(env, nullptr); 1559 env->SetObjectArrayElement(result, 0, codeBlob); 1560 1561 jobject level = integerBox(thread, env, comp_level); 1562 CHECK_JNI_EXCEPTION_(env, nullptr); 1563 env->SetObjectArrayElement(result, 1, level); 1564 1565 jbyteArray insts = env->NewByteArray(insts_size); 1566 CHECK_JNI_EXCEPTION_(env, nullptr); 1567 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1568 env->SetObjectArrayElement(result, 2, insts); 1569 1570 jobject id = integerBox(thread, env, code->compile_id()); 1571 CHECK_JNI_EXCEPTION_(env, nullptr); 1572 env->SetObjectArrayElement(result, 3, id); 1573 1574 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1575 CHECK_JNI_EXCEPTION_(env, nullptr); 1576 env->SetObjectArrayElement(result, 4, entry_point); 1577 1578 return result; 1579 WB_END 1580 1581 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) { 1582 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1583 BufferBlob* blob; 1584 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1585 if (full_size < size) { 1586 full_size += align_up(size - full_size, oopSize); 1587 } 1588 { 1589 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1590 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1591 if (blob != nullptr) { 1592 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1593 } 1594 } 1595 // Track memory usage statistic after releasing CodeCache_lock 1596 MemoryService::track_code_cache_memory_usage(); 1597 return blob; 1598 } 1599 1600 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1601 if (size < 0) { 1602 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1603 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1604 } 1605 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type)); 1606 WB_END 1607 1608 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1609 if (addr == 0) { 1610 return; 1611 } 1612 BufferBlob::free((BufferBlob*) addr); 1613 WB_END 1614 1615 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1616 ResourceMark rm; 1617 GrowableArray<CodeBlobStub*> blobs; 1618 { 1619 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1620 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type)); 1621 if (heap == nullptr) { 1622 return nullptr; 1623 } 1624 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1625 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) { 1626 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1627 new (stub) CodeBlobStub(cb); 1628 blobs.append(stub); 1629 } 1630 } 1631 ThreadToNativeFromVM ttn(thread); 1632 jobjectArray result = nullptr; 1633 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1634 CHECK_JNI_EXCEPTION_(env, nullptr); 1635 result = env->NewObjectArray(blobs.length(), clazz, nullptr); 1636 CHECK_JNI_EXCEPTION_(env, nullptr); 1637 if (result == nullptr) { 1638 return result; 1639 } 1640 int i = 0; 1641 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1642 it != blobs.end(); ++it) { 1643 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1644 CHECK_JNI_EXCEPTION_(env, nullptr); 1645 env->SetObjectArrayElement(result, i, obj); 1646 CHECK_JNI_EXCEPTION_(env, nullptr); 1647 ++i; 1648 } 1649 return result; 1650 WB_END 1651 1652 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1653 return CompileBroker::get_compilation_activity_mode(); 1654 WB_END 1655 1656 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1657 if (addr == 0) { 1658 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1659 "WB_GetCodeBlob: addr is null"); 1660 } 1661 ThreadToNativeFromVM ttn(thread); 1662 CodeBlobStub stub((CodeBlob*) addr); 1663 return codeBlob2objectArray(thread, env, &stub); 1664 WB_END 1665 1666 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1667 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1668 CHECK_JNI_EXCEPTION_(env, 0); 1669 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1670 return (jlong) mh->method_data(); 1671 WB_END 1672 1673 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1674 return (jlong) thread->stack_size(); 1675 WB_END 1676 1677 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1678 return (jlong) thread->stack_overflow_state()->stack_available( 1679 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size(); 1680 WB_END 1681 1682 1683 int WhiteBox::array_bytes_to_length(size_t bytes) { 1684 return Array<u1>::bytes_to_length(bytes); 1685 } 1686 1687 /////////////// 1688 // MetaspaceTestContext and MetaspaceTestArena 1689 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit)) 1690 metaspace::MetaspaceTestContext* context = 1691 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit); 1692 return (jlong)p2i(context); 1693 WB_END 1694 1695 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1696 delete (metaspace::MetaspaceTestContext*) context; 1697 WB_END 1698 1699 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1700 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1701 context0->purge_area(); 1702 WB_END 1703 1704 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1705 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1706 context0->print_on(tty); 1707 WB_END 1708 1709 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1710 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1711 return context0->committed_words(); 1712 WB_END 1713 1714 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1715 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1716 return context0->used_words(); 1717 WB_END 1718 1719 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro)) 1720 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType; 1721 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1722 return (jlong)p2i(context0->create_arena(type)); 1723 WB_END 1724 1725 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena)) 1726 delete (metaspace::MetaspaceTestArena*) arena; 1727 WB_END 1728 1729 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size)) 1730 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena; 1731 MetaWord* p = arena0->allocate((size_t) word_size); 1732 return (jlong)p2i(p); 1733 WB_END 1734 1735 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size)) 1736 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena; 1737 arena0->deallocate((MetaWord*)p, (size_t) word_size); 1738 WB_END 1739 1740 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb)) 1741 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord; 1742 WB_END 1743 1744 ////////////// 1745 1746 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1747 if (size < 0) { 1748 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1749 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1750 } 1751 1752 oop class_loader_oop = JNIHandles::resolve(class_loader); 1753 ClassLoaderData* cld = class_loader_oop != nullptr 1754 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1755 : ClassLoaderData::the_null_class_loader_data(); 1756 1757 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1758 1759 return (jlong)(uintptr_t)metadata; 1760 WB_END 1761 1762 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1763 jstring version, jstring location, jobjectArray packages)) 1764 Handle h_module (THREAD, JNIHandles::resolve(module)); 1765 Modules::define_module(h_module, is_open, version, location, packages, CHECK); 1766 WB_END 1767 1768 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1769 Handle h_from_module (THREAD, JNIHandles::resolve(from_module)); 1770 Handle h_to_module (THREAD, JNIHandles::resolve(to_module)); 1771 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK); 1772 WB_END 1773 1774 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1775 Handle h_module (THREAD, JNIHandles::resolve(module)); 1776 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK); 1777 WB_END 1778 1779 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1780 Handle h_module (THREAD, JNIHandles::resolve(module)); 1781 Modules::add_module_exports(h_module, package, Handle(), CHECK); 1782 WB_END 1783 1784 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1785 Handle h_from_module (THREAD, JNIHandles::resolve(from_module)); 1786 Handle h_source_module (THREAD, JNIHandles::resolve(source_module)); 1787 Modules::add_reads_module(h_from_module, h_source_module, CHECK); 1788 WB_END 1789 1790 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1791 if (inc < 0) { 1792 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1793 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1794 } 1795 1796 jlong max_size_t = (jlong) ((size_t) -1); 1797 if (inc > max_size_t) { 1798 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1799 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1800 } 1801 1802 size_t new_cap_until_GC = 0; 1803 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1804 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1805 if (!success) { 1806 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1807 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1808 "due to contention with another thread"); 1809 } 1810 return (jlong) new_cap_until_GC; 1811 WB_END 1812 1813 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1814 return (jlong) MetaspaceGC::capacity_until_GC(); 1815 WB_END 1816 1817 // The function is only valid when CDS is available. 1818 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb)) 1819 #if INCLUDE_CDS 1820 return (jlong)MetaspaceShared::core_region_alignment(); 1821 #else 1822 ShouldNotReachHere(); 1823 return 0L; 1824 #endif 1825 WB_END 1826 1827 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1828 oop obj_oop = JNIHandles::resolve(obj); 1829 return (jboolean) obj_oop->mark().has_monitor(); 1830 WB_END 1831 1832 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb)) 1833 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors"); 1834 return ObjectSynchronizer::request_deflate_idle_monitors(); 1835 WB_END 1836 1837 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1838 VM_ForceSafepoint force_safepoint_op; 1839 VMThread::execute(&force_safepoint_op); 1840 WB_END 1841 1842 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb)) 1843 nullStream dev_null; 1844 ClassLoaderStatsVMOperation force_op(&dev_null); 1845 VMThread::execute(&force_op); 1846 WB_END 1847 1848 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1849 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1850 return (jlong) ik->constants(); 1851 WB_END 1852 1853 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1854 return ConstantPool::CPCACHE_INDEX_TAG; 1855 WB_END 1856 1857 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1858 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1859 ConstantPool* cp = ik->constants(); 1860 if (cp->cache() == nullptr) { 1861 return -1; 1862 } 1863 return cp->cache()->length(); 1864 WB_END 1865 1866 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1867 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1868 ConstantPool* cp = ik->constants(); 1869 if (cp->cache() == nullptr) { 1870 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1871 } 1872 jint cpci = index; 1873 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1874 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1875 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1876 } 1877 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1878 return cpi; 1879 WB_END 1880 1881 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1882 return ConstantPool::encode_invokedynamic_index(index); 1883 WB_END 1884 1885 WB_ENTRY(jobjectArray, WB_getObjectsViaKlassOopMaps(JNIEnv* env, jobject wb, jobject thing)) 1886 oop aoop = JNIHandles::resolve(thing); 1887 if (!aoop->is_instance()) { 1888 return nullptr; 1889 } 1890 instanceHandle ih(THREAD, (instanceOop) aoop); 1891 InstanceKlass* klass = InstanceKlass::cast(ih->klass()); 1892 if (klass->nonstatic_oop_map_count() == 0) { 1893 return nullptr; 1894 } 1895 const OopMapBlock* map = klass->start_of_nonstatic_oop_maps(); 1896 const OopMapBlock* const end = map + klass->nonstatic_oop_map_count(); 1897 int oop_count = 0; 1898 while (map < end) { 1899 oop_count += map->count(); 1900 map++; 1901 } 1902 1903 objArrayHandle result_array = 1904 oopFactory::new_objArray_handle(vmClasses::Object_klass(), oop_count, CHECK_NULL); 1905 map = klass->start_of_nonstatic_oop_maps(); 1906 int index = 0; 1907 while (map < end) { 1908 int offset = map->offset(); 1909 for (unsigned int j = 0; j < map->count(); j++) { 1910 result_array->obj_at_put(index++, ih->obj_field(offset)); 1911 offset += heapOopSize; 1912 } 1913 map++; 1914 } 1915 return (jobjectArray)JNIHandles::make_local(THREAD, result_array()); 1916 WB_END 1917 1918 class CollectOops : public BasicOopIterateClosure { 1919 public: 1920 GrowableArray<Handle>* array; 1921 1922 jobjectArray create_jni_result(JNIEnv* env, TRAPS) { 1923 objArrayHandle result_array = 1924 oopFactory::new_objArray_handle(vmClasses::Object_klass(), array->length(), CHECK_NULL); 1925 for (int i = 0 ; i < array->length(); i++) { 1926 result_array->obj_at_put(i, array->at(i)()); 1927 } 1928 return (jobjectArray)JNIHandles::make_local(THREAD, result_array()); 1929 } 1930 1931 void add_oop(oop o) { 1932 Handle oh = Handle(Thread::current(), o); 1933 // Value might be oop, but JLS can't see as Object, just iterate through it... 1934 if (oh != nullptr && oh->is_inline_type()) { 1935 oh->oop_iterate(this); 1936 } else { 1937 array->append(oh); 1938 } 1939 } 1940 1941 void do_oop(oop* o) { add_oop(HeapAccess<>::oop_load(o)); } 1942 void do_oop(narrowOop* v) { add_oop(HeapAccess<>::oop_load(v)); } 1943 }; 1944 1945 1946 WB_ENTRY(jobjectArray, WB_getObjectsViaOopIterator(JNIEnv* env, jobject wb, jobject thing)) 1947 ResourceMark rm(thread); 1948 Handle objh(thread, JNIHandles::resolve(thing)); 1949 GrowableArray<Handle>* array = new GrowableArray<Handle>(128); 1950 CollectOops collectOops; 1951 collectOops.array = array; 1952 objh->oop_iterate(&collectOops); 1953 return collectOops.create_jni_result(env, THREAD); 1954 WB_END 1955 1956 WB_ENTRY(jobjectArray, WB_getObjectsViaFrameOopIterator(JNIEnv* env, jobject wb, jint depth)) 1957 ResourceMark rm(THREAD); 1958 GrowableArray<Handle>* array = new GrowableArray<Handle>(128); 1959 CollectOops collectOops; 1960 collectOops.array = array; 1961 StackFrameStream sfs(thread, false /* update */, true /* process_frames */); 1962 while (depth > 0) { // Skip the native WB API frame 1963 sfs.next(); 1964 frame* f = sfs.current(); 1965 f->oops_do(&collectOops, nullptr, sfs.register_map()); 1966 depth--; 1967 } 1968 return collectOops.create_jni_result(env, THREAD); 1969 WB_END 1970 1971 1972 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass)) 1973 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1974 ConstantPool* cp = ik->constants(); 1975 if (cp->cache() == nullptr) { 1976 return -1; 1977 } 1978 return cp->resolved_indy_entries_length(); 1979 WB_END 1980 1981 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index)) 1982 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1983 ConstantPool* cp = ik->constants(); 1984 if (cp->cache() == nullptr) { 1985 return -1; 1986 } 1987 return cp->resolved_indy_entry_at(index)->constant_pool_index(); 1988 WB_END 1989 1990 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1991 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1992 VMThread::execute(&clear_ics); 1993 WB_END 1994 1995 template <typename T> 1996 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1997 assert(value != nullptr, "sanity"); 1998 if (method == nullptr || name == nullptr) { 1999 return false; 2000 } 2001 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 2002 CHECK_JNI_EXCEPTION_(env, false); 2003 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 2004 // can't be in VM when we call JNI 2005 ThreadToNativeFromVM ttnfv(thread); 2006 const char* flag_name = env->GetStringUTFChars(name, nullptr); 2007 CHECK_JNI_EXCEPTION_(env, false); 2008 enum CompileCommand option = CompilerOracle::string_to_option(flag_name); 2009 env->ReleaseStringUTFChars(name, flag_name); 2010 if (option == CompileCommand::Unknown) { 2011 return false; 2012 } 2013 if (!CompilerOracle::option_matches_type(option, *value)) { 2014 return false; 2015 } 2016 return CompilerOracle::has_option_value(mh, option, *value); 2017 } 2018 2019 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2020 bool result; 2021 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 2022 // can't be in VM when we call JNI 2023 ThreadToNativeFromVM ttnfv(thread); 2024 return booleanBox(thread, env, result); 2025 } 2026 return nullptr; 2027 WB_END 2028 2029 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2030 intx result; 2031 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 2032 // can't be in VM when we call JNI 2033 ThreadToNativeFromVM ttnfv(thread); 2034 return longBox(thread, env, result); 2035 } 2036 return nullptr; 2037 WB_END 2038 2039 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2040 uintx result; 2041 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 2042 // can't be in VM when we call JNI 2043 ThreadToNativeFromVM ttnfv(thread); 2044 return longBox(thread, env, result); 2045 } 2046 return nullptr; 2047 WB_END 2048 2049 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2050 double result; 2051 if (GetMethodOption <double> (thread, env, method, name, &result)) { 2052 // can't be in VM when we call JNI 2053 ThreadToNativeFromVM ttnfv(thread); 2054 return doubleBox(thread, env, result); 2055 } 2056 return nullptr; 2057 WB_END 2058 2059 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2060 ccstr ccstrResult; 2061 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 2062 // can't be in VM when we call JNI 2063 ThreadToNativeFromVM ttnfv(thread); 2064 jstring result = env->NewStringUTF(ccstrResult); 2065 CHECK_JNI_EXCEPTION_(env, nullptr); 2066 return result; 2067 } 2068 return nullptr; 2069 WB_END 2070 2071 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb)) 2072 const char* p = Arguments::get_default_shared_archive_path(); 2073 ThreadToNativeFromVM ttn(thread); 2074 jstring path_string = env->NewStringUTF(p); 2075 2076 CHECK_JNI_EXCEPTION_(env, nullptr); 2077 2078 return path_string; 2079 WB_END 2080 2081 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb)) 2082 return UseSharedSpaces; 2083 WB_END 2084 2085 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb)) 2086 #if INCLUDE_CDS 2087 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION; 2088 #else 2089 ShouldNotReachHere(); 2090 return (jint)-1; 2091 #endif 2092 WB_END 2093 2094 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb)) 2095 #if INCLUDE_CDS 2096 return (jint)CURRENT_CDS_ARCHIVE_VERSION; 2097 #else 2098 ShouldNotReachHere(); 2099 return (jint)-1; 2100 #endif 2101 WB_END 2102 2103 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb)) 2104 return FileMapInfo::memory_mapping_failed(); 2105 WB_END 2106 2107 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str)) 2108 ResourceMark rm(THREAD); 2109 oop str_oop = JNIHandles::resolve(str); 2110 int length; 2111 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false)); 2112 return StringTable::lookup_shared(chars, length) == str_oop; 2113 WB_END 2114 2115 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 2116 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2117 WB_END 2118 2119 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env)) 2120 return ArchiveHeapLoader::is_mapped(); 2121 WB_END 2122 2123 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz)) 2124 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 2125 if (!k->is_instance_klass()) { 2126 return; 2127 } 2128 InstanceKlass *ik = InstanceKlass::cast(k); 2129 ik->link_class(THREAD); // may throw verification error 2130 WB_END 2131 2132 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 2133 return ArchiveHeapLoader::is_mapped(); 2134 WB_END 2135 2136 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env)) 2137 #if INCLUDE_CDS 2138 return true; 2139 #else 2140 return false; 2141 #endif // INCLUDE_CDS 2142 WB_END 2143 2144 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env)) 2145 #if COMPILER2_OR_JVMCI 2146 return true; 2147 #else 2148 return false; 2149 #endif 2150 WB_END 2151 2152 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env)) 2153 #if INCLUDE_JVMCI 2154 return JVMCIGlobals::gc_supports_jvmci(); 2155 #else 2156 return false; 2157 #endif 2158 WB_END 2159 2160 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env)) 2161 return HeapShared::can_write(); 2162 WB_END 2163 2164 2165 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env)) 2166 #if INCLUDE_JFR 2167 return true; 2168 #else 2169 return false; 2170 #endif // INCLUDE_JFR 2171 WB_END 2172 2173 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env)) 2174 #if defined(DTRACE_ENABLED) 2175 return true; 2176 #else 2177 return false; 2178 #endif // DTRACE_ENABLED 2179 WB_END 2180 2181 #if INCLUDE_CDS 2182 2183 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name)) 2184 ResourceMark rm; 2185 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 2186 jint result = (jint)CDSConstants::get_cds_offset(c_name); 2187 return result; 2188 WB_END 2189 2190 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name)) 2191 ResourceMark rm; 2192 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 2193 jint result = (jint)CDSConstants::get_cds_constant(c_name); 2194 return result; 2195 WB_END 2196 2197 #endif // INCLUDE_CDS 2198 2199 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle)) 2200 class ReadMonitorsClosure : public HandshakeClosure { 2201 jboolean _executed; 2202 2203 void do_thread(Thread* th) { 2204 JavaThread* jt = JavaThread::cast(th); 2205 ResourceMark rm; 2206 2207 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>(); 2208 2209 if (!jt->has_last_Java_frame()) { 2210 return; 2211 } 2212 RegisterMap rmap(jt, 2213 RegisterMap::UpdateMap::include, 2214 RegisterMap::ProcessFrames::include, 2215 RegisterMap::WalkContinuation::skip); 2216 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) { 2217 GrowableArray<MonitorInfo*> *monitors = vf->monitors(); 2218 if (monitors != nullptr) { 2219 int len = monitors->length(); 2220 // Walk monitors youngest to oldest 2221 for (int i = len - 1; i >= 0; i--) { 2222 MonitorInfo* mon_info = monitors->at(i); 2223 if (mon_info->eliminated()) continue; 2224 oop owner = mon_info->owner(); 2225 if (owner != nullptr) { 2226 info->append(mon_info); 2227 } 2228 } 2229 } 2230 } 2231 _executed = true; 2232 } 2233 2234 public: 2235 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {} 2236 jboolean executed() const { return _executed; } 2237 }; 2238 2239 ReadMonitorsClosure rmc; 2240 if (thread_handle != nullptr) { 2241 ThreadsListHandle tlh; 2242 JavaThread* target = nullptr; 2243 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2244 if (is_alive) { 2245 Handshake::execute(&rmc, &tlh, target); 2246 } 2247 } 2248 return rmc.executed(); 2249 WB_END 2250 2251 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 2252 class TraceSelfClosure : public HandshakeClosure { 2253 jint _num_threads_completed; 2254 2255 void do_thread(Thread* th) { 2256 JavaThread* jt = JavaThread::cast(th); 2257 ResourceMark rm; 2258 2259 jt->print_on(tty); 2260 jt->print_stack_on(tty); 2261 tty->cr(); 2262 Atomic::inc(&_num_threads_completed); 2263 } 2264 2265 public: 2266 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {} 2267 2268 jint num_threads_completed() const { return _num_threads_completed; } 2269 }; 2270 TraceSelfClosure tsc(Thread::current()); 2271 2272 if (all_threads) { 2273 Handshake::execute(&tsc); 2274 } else if (thread_handle != nullptr) { 2275 ThreadsListHandle tlh; 2276 JavaThread* target = nullptr; 2277 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2278 if (is_alive) { 2279 Handshake::execute(&tsc, &tlh, target); 2280 } 2281 } 2282 return tsc.num_threads_completed(); 2283 WB_END 2284 2285 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle)) 2286 class TraceSelfClosure : public AsyncHandshakeClosure { 2287 JavaThread* _self; 2288 void do_thread(Thread* th) { 2289 assert(th->is_Java_thread(), "sanity"); 2290 // AsynchHandshake handshakes are only executed by target. 2291 assert(_self == th, "Must be"); 2292 assert(Thread::current() == th, "Must be"); 2293 JavaThread* jt = JavaThread::cast(th); 2294 ResourceMark rm; 2295 jt->print_on(tty); 2296 jt->print_stack_on(tty); 2297 tty->cr(); 2298 } 2299 2300 public: 2301 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {} 2302 }; 2303 if (thread_handle != nullptr) { 2304 ThreadsListHandle tlh; 2305 JavaThread* target = nullptr; 2306 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2307 if (is_alive) { 2308 TraceSelfClosure* tsc = new TraceSelfClosure(target); 2309 Handshake::execute(tsc, target); 2310 } 2311 } 2312 WB_END 2313 2314 static volatile int _emulated_lock = 0; 2315 2316 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender)) 2317 JavaThread* self = JavaThread::current(); 2318 2319 { 2320 // Before trying to acquire the lock transition into a safepoint safe state. 2321 // Otherwise if either suspender or suspendee blocks for a safepoint 2322 // in ~ThreadBlockInVM the other one could loop forever trying to acquire 2323 // the lock without allowing the safepoint to progress. 2324 ThreadBlockInVM tbivm(self); 2325 2326 // We will deadlock here if we are 'suspender' and 'suspendee' 2327 // suspended in ~ThreadBlockInVM. This verifies we only suspend 2328 // at the right place. 2329 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {} 2330 assert(_emulated_lock == 1, "Must be locked"); 2331 2332 // Sleep much longer in suspendee to force situation where 2333 // 'suspender' is waiting above to acquire lock. 2334 os::naked_short_sleep(suspender ? 1 : 10); 2335 } 2336 Atomic::store(&_emulated_lock, 0); 2337 WB_END 2338 2339 // Some convenience methods to deal with objects from java 2340 int WhiteBox::offset_for_field(const char* field_name, oop object, 2341 Symbol* signature_symbol) { 2342 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid"); 2343 2344 //Get the class of our object 2345 Klass* arg_klass = object->klass(); 2346 //Turn it into an instance-klass 2347 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 2348 2349 //Create symbols to look for in the class 2350 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name); 2351 2352 //To be filled in with an offset of the field we're looking for 2353 fieldDescriptor fd; 2354 2355 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 2356 if (res == nullptr) { 2357 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 2358 name_symbol->as_C_string()); 2359 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 2360 } 2361 2362 //fetch the field at the offset we've found 2363 int dest_offset = fd.offset(); 2364 2365 return dest_offset; 2366 } 2367 2368 2369 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 2370 int offset = offset_for_field(field_name, object, 2371 vmSymbols::string_signature()); 2372 oop string = object->obj_field(offset); 2373 if (string == nullptr) { 2374 return nullptr; 2375 } 2376 const char* ret = java_lang_String::as_utf8_string(string); 2377 return ret; 2378 } 2379 2380 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 2381 int offset = 2382 offset_for_field(field_name, object, vmSymbols::bool_signature()); 2383 bool ret = (object->bool_field(offset) == JNI_TRUE); 2384 return ret; 2385 } 2386 2387 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 2388 ResourceMark rm; 2389 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass)); 2390 const char* klass_name = klass->external_name(); 2391 2392 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 2393 2394 // one by one registration natives for exception catching 2395 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 2396 CHECK_JNI_EXCEPTION(env); 2397 for (int i = 0, n = method_count; i < n; ++i) { 2398 // Skip dummy entries 2399 if (method_array[i].fnPtr == nullptr) continue; 2400 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 2401 jthrowable throwable_obj = env->ExceptionOccurred(); 2402 if (throwable_obj != nullptr) { 2403 env->ExceptionClear(); 2404 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 2405 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 2406 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 2407 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s", 2408 klass_name, method_array[i].name, method_array[i].signature); 2409 } 2410 } else { 2411 // Registration failed unexpectedly. 2412 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered", 2413 klass_name, method_array[i].name, method_array[i].signature); 2414 env->UnregisterNatives(wbclass); 2415 break; 2416 } 2417 } 2418 } 2419 } 2420 2421 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 2422 // can't be in VM when we call JNI 2423 ThreadToNativeFromVM ttnfv(thread); 2424 const char* dir = env->GetStringUTFChars(compDirect, nullptr); 2425 CHECK_JNI_EXCEPTION_(env, 0); 2426 int ret; 2427 { 2428 ThreadInVMfromNative ttvfn(thread); // back to VM 2429 ret = DirectivesParser::parse_string(dir, tty); 2430 } 2431 env->ReleaseStringUTFChars(compDirect, dir); 2432 // -1 for error parsing directive. Return 0 as number of directives added. 2433 if (ret == -1) { 2434 ret = 0; 2435 } 2436 return (jint) ret; 2437 WB_END 2438 2439 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 2440 DirectivesStack::pop(count); 2441 WB_END 2442 2443 // Checks that the library libfile has the noexecstack bit set. 2444 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 2445 jboolean ret = false; 2446 #ifdef LINUX 2447 // Can't be in VM when we call JNI. 2448 ThreadToNativeFromVM ttnfv(thread); 2449 const char* lf = env->GetStringUTFChars(libfile, nullptr); 2450 CHECK_JNI_EXCEPTION_(env, 0); 2451 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 2452 env->ReleaseStringUTFChars(libfile, lf); 2453 #endif 2454 return ret; 2455 WB_END 2456 2457 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 2458 LINUX_ONLY(return OSContainer::is_containerized();) 2459 return false; 2460 WB_END 2461 2462 // Physical memory of the host machine (including containers) 2463 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o)) 2464 LINUX_ONLY(return os::Linux::physical_memory();) 2465 return os::physical_memory(); 2466 WB_END 2467 2468 // Physical swap of the host machine (including containers), Linux only. 2469 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o)) 2470 LINUX_ONLY(return (jlong)os::Linux::host_swap();) 2471 return -1; // Not used/implemented on other platforms 2472 WB_END 2473 2474 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env, 2475 jobject o, 2476 jstring proc_cgroups, 2477 jstring proc_self_cgroup, 2478 jstring proc_self_mountinfo)) 2479 jint ret = 0; 2480 #ifdef LINUX 2481 ThreadToNativeFromVM ttnfv(thread); 2482 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, nullptr); 2483 CHECK_JNI_EXCEPTION_(env, 0); 2484 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr); 2485 CHECK_JNI_EXCEPTION_(env, 0); 2486 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr); 2487 CHECK_JNI_EXCEPTION_(env, 0); 2488 u1 cg_type_flags = 0; 2489 // This sets cg_type_flags 2490 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags); 2491 ret = (jint)cg_type_flags; 2492 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups); 2493 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup); 2494 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo); 2495 #endif 2496 return ret; 2497 WB_END 2498 2499 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 2500 os::print_os_info(tty); 2501 WB_END 2502 2503 // Elf decoder 2504 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 2505 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 2506 ElfFile::_do_not_cache_elf_section = true; 2507 #endif 2508 WB_END 2509 2510 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o)) 2511 return (jlong) ResolvedMethodTable::items_count(); 2512 WB_END 2513 2514 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o)) 2515 return (jint) ProtectionDomainCacheTable::removed_entries_count(); 2516 WB_END 2517 2518 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror)) 2519 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror)); 2520 // Return size in bytes. 2521 return k->size() * wordSize; 2522 WB_END 2523 2524 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java. 2525 // It explains how the thread's priority field is used for test state coordination. 2526 // 2527 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle)) 2528 oop target_oop = JNIHandles::resolve_non_null(target_handle); 2529 jlong tid = java_lang_Thread::thread_id(target_oop); 2530 JavaThread* target = java_lang_Thread::thread(target_oop); 2531 2532 // Grab a ThreadsListHandle to protect the target thread whilst terminating 2533 ThreadsListHandle tlh; 2534 2535 // Look up the target thread by tid to ensure it is present 2536 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid); 2537 if (t == nullptr) { 2538 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!"); 2539 } 2540 2541 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected"); 2542 // Allow target to terminate by boosting priority 2543 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1)); 2544 2545 // Now wait for the target to terminate 2546 while (!target->is_terminated()) { 2547 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint 2548 os::naked_short_sleep(0); 2549 } 2550 2551 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated"); 2552 2553 // Now release the GC inducing thread - we have to re-resolve the external oop that 2554 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now. 2555 oop original = JNIHandles::resolve_non_null(target_handle); 2556 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2)); 2557 2558 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:"); 2559 2560 // The Java code should be creating garbage and triggering GC, which would potentially move 2561 // the threadObj oop. If the exiting thread is properly protected then its threadObj should 2562 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to 2563 // kick in. 2564 for (int i = 0; i < 5; i++) { 2565 oop original = JNIHandles::resolve_non_null(target_handle); 2566 oop current = t->threadObj(); 2567 if (original != current) { 2568 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i); 2569 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!"); 2570 } else { 2571 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i); 2572 ThreadBlockInVM tbivm(thread); 2573 os::naked_short_sleep(50); 2574 } 2575 } 2576 WB_END 2577 2578 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map)) 2579 ResourceMark rm; // for verify 2580 stringStream st; 2581 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) { 2582 frame* current_frame = fst.current(); 2583 if (log) { 2584 current_frame->print_value_on(&st, nullptr); 2585 } 2586 current_frame->verify(fst.register_map()); 2587 } 2588 if (log) { 2589 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames"); 2590 tty->print_raw(st.freeze()); 2591 tty->print_cr("[WhiteBox::VerifyFrames] Done"); 2592 } 2593 WB_END 2594 2595 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb)) 2596 #if INCLUDE_JVMTI 2597 return JNI_TRUE; 2598 #else 2599 return JNI_FALSE; 2600 #endif 2601 WB_END 2602 2603 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time)) 2604 os::naked_short_sleep(time); 2605 WB_END 2606 2607 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o)) 2608 ThreadToNativeFromVM ttn(thread); 2609 jstring info_string = env->NewStringUTF(XSTR(LIBC)); 2610 CHECK_JNI_EXCEPTION_(env, nullptr); 2611 return info_string; 2612 WB_END 2613 2614 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb)) 2615 GCLocker::lock_critical(thread); 2616 WB_END 2617 2618 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb)) 2619 GCLocker::unlock_critical(thread); 2620 WB_END 2621 2622 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable)) 2623 if (!Continuations::enabled()) { 2624 tty->print_cr("WB error: must be Continuations::enabled()!"); 2625 return JNI_FALSE; 2626 } 2627 jboolean result = false; 2628 #if INCLUDE_JVMTI 2629 if (enable) { 2630 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti(); 2631 } else { 2632 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti(); 2633 } 2634 #endif 2635 return result; 2636 WB_END 2637 2638 #define CC (char*) 2639 2640 static JNINativeMethod methods[] = { 2641 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 2642 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 2643 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 2644 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 2645 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 2646 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 2647 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 2648 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 2649 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 2650 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses }, 2651 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount }, 2652 {CC"parseCommandLine0", 2653 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;", 2654 (void*) &WB_ParseCommandLine 2655 }, 2656 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2657 (void*)&WB_AddToBootstrapClassLoaderSearch}, 2658 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2659 (void*)&WB_AddToSystemClassLoaderSearch}, 2660 {CC"getCompressedOopsMaxHeapSize", CC"()J", 2661 (void*)&WB_GetCompressedOopsMaxHeapSize}, 2662 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 2663 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 2664 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 2665 #if INCLUDE_CDS 2666 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName}, 2667 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName}, 2668 #endif 2669 #if INCLUDE_G1GC 2670 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 2671 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles}, 2672 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 2673 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 2674 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 2675 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 2676 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 2677 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 2678 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit}, 2679 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 2680 (void*)&WB_G1AuxiliaryMemoryUsage }, 2681 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount }, 2682 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds }, 2683 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 2684 #endif // INCLUDE_G1GC 2685 #if INCLUDE_PARALLELGC 2686 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 2687 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 2688 #endif 2689 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 2690 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 2691 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType}, 2692 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 2693 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 2694 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 2695 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 2696 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 2697 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 2698 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 2699 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena }, 2700 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena }, 2701 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc }, 2702 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 2703 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized}, 2704 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 2705 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 2706 (void*)&WB_DeoptimizeMethod }, 2707 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 2708 (void*)&WB_IsMethodCompiled }, 2709 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 2710 (void*)&WB_IsMethodCompilable}, 2711 {CC"isMethodQueuedForCompilation0", 2712 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 2713 {CC"isIntrinsicAvailable0", 2714 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2715 (void*)&WB_IsIntrinsicAvailable}, 2716 {CC"makeMethodNotCompilable0", 2717 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2718 {CC"testSetDontInlineMethod0", 2719 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2720 {CC"getMethodCompilationLevel0", 2721 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2722 {CC"getMethodDecompileCount0", 2723 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount}, 2724 {CC"getMethodTrapCount0", 2725 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2726 (void*)&WB_GetMethodTrapCount}, 2727 {CC"getDeoptCount0", 2728 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount}, 2729 {CC"getMethodEntryBci0", 2730 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2731 {CC"getCompileQueueSize", 2732 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2733 {CC"testSetForceInlineMethod0", 2734 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2735 {CC"enqueueMethodForCompilation0", 2736 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2737 {CC"enqueueInitializerForCompilation0", 2738 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2739 {CC"markMethodProfiled", 2740 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled}, 2741 {CC"clearMethodState0", 2742 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2743 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2744 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2745 {CC"matchesMethod", 2746 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2747 (void*)&WB_MatchesMethod}, 2748 {CC"matchesInline", 2749 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2750 (void*)&WB_MatchesInline}, 2751 {CC"shouldPrintAssembly", 2752 CC"(Ljava/lang/reflect/Executable;I)Z", 2753 (void*)&WB_ShouldPrintAssembly}, 2754 2755 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2756 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2757 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2758 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2759 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2760 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2761 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2762 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2763 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2764 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2765 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2766 (void*)&WB_SetStringVMFlag}, 2767 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2768 (void*)&WB_GetBooleanVMFlag}, 2769 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2770 (void*)&WB_GetIntVMFlag}, 2771 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2772 (void*)&WB_GetUintVMFlag}, 2773 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2774 (void*)&WB_GetIntxVMFlag}, 2775 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2776 (void*)&WB_GetUintxVMFlag}, 2777 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2778 (void*)&WB_GetUint64VMFlag}, 2779 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2780 (void*)&WB_GetSizeTVMFlag}, 2781 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2782 (void*)&WB_GetDoubleVMFlag}, 2783 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2784 (void*)&WB_GetStringVMFlag}, 2785 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2786 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2787 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2788 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2789 {CC"allocateMetaspace", 2790 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2791 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2792 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2793 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment }, 2794 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2795 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2796 (void*)&WB_GetNMethod }, 2797 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2798 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2799 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2800 {CC"getCompilationActivityMode", 2801 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2802 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2803 (void*)&WB_GetMethodData }, 2804 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2805 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2806 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2807 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2808 (void*)&WB_DefineModule }, 2809 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2810 (void*)&WB_AddModuleExports }, 2811 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2812 (void*)&WB_AddReadsModule }, 2813 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2814 (void*)&WB_AddModuleExportsToAllUnnamed }, 2815 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2816 (void*)&WB_AddModuleExportsToAll }, 2817 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors }, 2818 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2819 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2820 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint }, 2821 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2822 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 2823 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 2824 {CC"remapInstructionOperandFromCPCache0", 2825 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 2826 {CC"encodeConstantPoolIndyIndex0", 2827 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 2828 {CC"getObjectsViaKlassOopMaps0", 2829 CC"(Ljava/lang/Object;)[Ljava/lang/Object;", (void*)&WB_getObjectsViaKlassOopMaps}, 2830 {CC"getObjectsViaOopIterator0", 2831 CC"(Ljava/lang/Object;)[Ljava/lang/Object;",(void*)&WB_getObjectsViaOopIterator}, 2832 {CC"getObjectsViaFrameOopIterator", 2833 CC"(I)[Ljava/lang/Object;", (void*)&WB_getObjectsViaFrameOopIterator}, 2834 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength}, 2835 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex}, 2836 {CC"getMethodBooleanOption", 2837 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2838 (void*)&WB_GetMethodBooleaneOption}, 2839 {CC"getMethodIntxOption", 2840 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2841 (void*)&WB_GetMethodIntxOption}, 2842 {CC"getMethodUintxOption", 2843 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2844 (void*)&WB_GetMethodUintxOption}, 2845 {CC"getMethodDoubleOption", 2846 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2847 (void*)&WB_GetMethodDoubleOption}, 2848 {CC"getMethodStringOption", 2849 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2850 (void*)&WB_GetMethodStringOption}, 2851 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;", 2852 (void*)&WB_GetDefaultArchivePath}, 2853 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion}, 2854 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion}, 2855 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled}, 2856 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString }, 2857 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2858 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped }, 2859 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass}, 2860 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2861 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded }, 2862 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded }, 2863 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded }, 2864 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded }, 2865 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC}, 2866 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive }, 2867 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed }, 2868 2869 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2870 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors }, 2871 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2872 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack }, 2873 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock}, 2874 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread }, 2875 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames }, 2876 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2877 (void*)&WB_AddCompilerDirective }, 2878 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2879 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported}, 2880 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler}, 2881 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected}, 2882 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically}, 2883 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints}, 2884 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl}, 2885 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl}, 2886 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle}, 2887 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z", 2888 (void*)&WB_ConcurrentGCRunTo}, 2889 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2890 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2891 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2892 {CC"validateCgroup", 2893 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I", 2894 (void*)&WB_ValidateCgroup }, 2895 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory }, 2896 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap }, 2897 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2898 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 2899 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount }, 2900 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount }, 2901 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize}, 2902 2903 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext}, 2904 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext}, 2905 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext}, 2906 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext}, 2907 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext}, 2908 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext}, 2909 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext}, 2910 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena}, 2911 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena}, 2912 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena}, 2913 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize}, 2914 2915 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded}, 2916 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe}, 2917 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName}, 2918 2919 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical}, 2920 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical}, 2921 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode}, 2922 }; 2923 2924 2925 #undef CC 2926 2927 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2928 { 2929 if (WhiteBoxAPI) { 2930 // Make sure that wbclass is loaded by the null classloader 2931 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass))); 2932 Handle loader(THREAD, ik->class_loader()); 2933 if (loader.is_null()) { 2934 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2935 WhiteBox::set_used(); 2936 } 2937 } 2938 } 2939 JVM_END