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/metaspace/testHelpers.hpp" 55 #include "memory/metaspaceUtils.hpp" 56 #include "memory/oopFactory.hpp" 57 #include "memory/resourceArea.hpp" 58 #include "memory/universe.hpp" 59 #include "oops/array.hpp" 60 #include "oops/compressedOops.hpp" 61 #include "oops/constantPool.inline.hpp" 62 #include "oops/klass.inline.hpp" 63 #include "oops/method.inline.hpp" 64 #include "oops/objArrayKlass.hpp" 65 #include "oops/objArrayOop.inline.hpp" 66 #include "oops/oop.inline.hpp" 67 #include "oops/typeArrayOop.inline.hpp" 68 #include "prims/jvmtiEnvBase.hpp" 69 #include "prims/resolvedMethodTable.hpp" 70 #include "prims/wbtestmethods/parserTests.hpp" 71 #include "prims/whitebox.inline.hpp" 72 #include "runtime/arguments.hpp" 73 #include "runtime/atomic.hpp" 74 #include "runtime/deoptimization.hpp" 75 #include "runtime/fieldDescriptor.inline.hpp" 76 #include "runtime/flags/jvmFlag.hpp" 77 #include "runtime/flags/jvmFlagAccess.hpp" 78 #include "runtime/frame.inline.hpp" 79 #include "runtime/handles.inline.hpp" 80 #include "runtime/handshake.hpp" 81 #include "runtime/interfaceSupport.inline.hpp" 82 #include "runtime/javaCalls.hpp" 83 #include "runtime/javaThread.inline.hpp" 84 #include "runtime/jniHandles.inline.hpp" 85 #include "runtime/os.hpp" 86 #include "runtime/stackFrameStream.inline.hpp" 87 #include "runtime/synchronizer.hpp" 88 #include "runtime/threadSMR.hpp" 89 #include "runtime/vframe.hpp" 90 #include "runtime/vm_version.hpp" 91 #include "services/mallocSiteTable.hpp" 92 #include "services/memoryService.hpp" 93 #include "services/memTracker.hpp" 94 #include "utilities/align.hpp" 95 #include "utilities/debug.hpp" 96 #include "utilities/elfFile.hpp" 97 #include "utilities/exceptions.hpp" 98 #include "utilities/macros.hpp" 99 #include "utilities/nativeCallStack.hpp" 100 #include "utilities/ostream.hpp" 101 #if INCLUDE_G1GC 102 #include "gc/g1/g1Arguments.hpp" 103 #include "gc/g1/g1CollectedHeap.inline.hpp" 104 #include "gc/g1/g1ConcurrentMark.hpp" 105 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp" 106 #include "gc/g1/heapRegionManager.hpp" 107 #include "gc/g1/heapRegionRemSet.inline.hpp" 108 #endif // INCLUDE_G1GC 109 #if INCLUDE_PARALLELGC 110 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 111 #endif // INCLUDE_PARALLELGC 112 #if INCLUDE_ZGC 113 #include "gc/z/zAddress.inline.hpp" 114 #endif // INCLUDE_ZGC 115 #if INCLUDE_JVMCI 116 #include "jvmci/jvmciEnv.hpp" 117 #include "jvmci/jvmciRuntime.hpp" 118 #endif 119 #ifdef LINUX 120 #include "os_linux.hpp" 121 #include "osContainer_linux.hpp" 122 #include "cgroupSubsystem_linux.hpp" 123 #endif 124 125 #define CHECK_JNI_EXCEPTION_(env, value) \ 126 do { \ 127 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 128 THREAD->clear_pending_jni_exception_check(); \ 129 if (HAS_PENDING_EXCEPTION) { \ 130 return(value); \ 131 } \ 132 } while (0) 133 134 #define CHECK_JNI_EXCEPTION(env) \ 135 do { \ 136 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 137 THREAD->clear_pending_jni_exception_check(); \ 138 if (HAS_PENDING_EXCEPTION) { \ 139 return; \ 140 } \ 141 } while (0) 142 143 bool WhiteBox::_used = false; 144 volatile bool WhiteBox::compilation_locked = false; 145 146 class VM_WhiteBoxOperation : public VM_Operation { 147 public: 148 VM_WhiteBoxOperation() { } 149 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 150 bool allow_nested_vm_operations() const { return true; } 151 }; 152 153 154 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 155 return (jlong)(void*)JNIHandles::resolve(obj); 156 WB_END 157 158 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 159 return heapOopSize; 160 WB_END 161 162 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 163 return (jint)os::vm_page_size(); 164 WB_END 165 166 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 167 return os::vm_allocation_granularity(); 168 WB_END 169 170 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 171 return os::large_page_size(); 172 WB_END 173 174 class WBIsKlassAliveClosure : public LockedClassesDo { 175 Symbol* _name; 176 int _count; 177 public: 178 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {} 179 180 void do_klass(Klass* k) { 181 Symbol* ksym = k->name(); 182 if (ksym->fast_compare(_name) == 0) { 183 _count++; 184 } else if (k->is_instance_klass()) { 185 // Need special handling for hidden classes because the JVM 186 // appends "+<hex-address>" to hidden class names. 187 InstanceKlass *ik = InstanceKlass::cast(k); 188 if (ik->is_hidden()) { 189 ResourceMark rm; 190 char* k_name = ksym->as_C_string(); 191 // Find the first '+' char and truncate the string at that point. 192 // NOTE: This will not work correctly if the original hidden class 193 // name contains a '+'. 194 char* plus_char = strchr(k_name, '+'); 195 if (plus_char != nullptr) { 196 *plus_char = 0; 197 char* c_name = _name->as_C_string(); 198 if (strcmp(c_name, k_name) == 0) { 199 _count++; 200 } 201 } 202 } 203 } 204 } 205 206 int count() const { 207 return _count; 208 } 209 }; 210 211 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name)) 212 oop h_name = JNIHandles::resolve(name); 213 if (h_name == nullptr) { 214 return 0; 215 } 216 Symbol* sym = java_lang_String::as_symbol(h_name); 217 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 218 219 WBIsKlassAliveClosure closure(sym); 220 ClassLoaderDataGraph::classes_do(&closure); 221 222 // Return the count of alive classes with this name. 223 return closure.count(); 224 WB_END 225 226 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name)) 227 oop h_name = JNIHandles::resolve(name); 228 if (h_name == nullptr) { 229 return 0; 230 } 231 Symbol* sym = java_lang_String::as_symbol(h_name); 232 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 233 return (jint)sym->refcount(); 234 WB_END 235 236 237 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 238 #if INCLUDE_JVMTI 239 ResourceMark rm; 240 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 241 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 242 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 243 assert(err == JVMTI_ERROR_NONE, "must not fail"); 244 #endif 245 } 246 WB_END 247 248 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 249 #if INCLUDE_JVMTI 250 ResourceMark rm; 251 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 252 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 253 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 254 assert(err == JVMTI_ERROR_NONE, "must not fail"); 255 #endif 256 } 257 WB_END 258 259 260 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 261 return (jlong)Arguments::max_heap_for_compressed_oops(); 262 } 263 WB_END 264 265 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 266 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " " 267 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 268 MinHeapSize, 269 InitialHeapSize, 270 MaxHeapSize, 271 SpaceAlignment, 272 HeapAlignment); 273 } 274 WB_END 275 276 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 277 size_t granularity = os::vm_allocation_granularity(); 278 ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size()); 279 VirtualSpace vs; 280 vs.initialize(rhs, 50 * granularity); 281 282 // Check if constraints are complied 283 if (!( UseCompressedOops && rhs.base() != nullptr && 284 CompressedOops::base() != nullptr && 285 CompressedOops::use_implicit_null_checks() )) { 286 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 287 "\tUseCompressedOops is %d\n" 288 "\trhs.base() is " PTR_FORMAT "\n" 289 "\tCompressedOops::base() is " PTR_FORMAT "\n" 290 "\tCompressedOops::use_implicit_null_checks() is %d", 291 UseCompressedOops, 292 p2i(rhs.base()), 293 p2i(CompressedOops::base()), 294 CompressedOops::use_implicit_null_checks()); 295 return; 296 } 297 tty->print_cr("Reading from no access area... "); 298 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 299 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 300 WB_END 301 302 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 303 size_t magnitude, size_t iterations) { 304 size_t granularity = os::vm_allocation_granularity(); 305 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size()); 306 VirtualSpace vs; 307 if (!vs.initialize(rhs, 0)) { 308 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 309 return 3; 310 } 311 312 int seed = os::random(); 313 tty->print_cr("Random seed is %d", seed); 314 315 for (size_t i = 0; i < iterations; i++) { 316 317 // Whether we will shrink or grow 318 bool shrink = os::random() % 2L == 0; 319 320 // Get random delta to resize virtual space 321 size_t delta = (size_t)os::random() % magnitude; 322 323 // If we are about to shrink virtual space below zero, then expand instead 324 if (shrink && vs.committed_size() < delta) { 325 shrink = false; 326 } 327 328 // Resizing by delta 329 if (shrink) { 330 vs.shrink_by(delta); 331 } else { 332 // If expanding fails expand_by will silently return false 333 vs.expand_by(delta, true); 334 } 335 } 336 return 0; 337 } 338 339 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 340 jlong reserved_space_size, jlong magnitude, jlong iterations)) 341 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 342 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 343 iterations); 344 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 345 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 346 return 1; 347 } 348 349 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 350 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 351 if (sizeof(size_t) < sizeof(jlong)) { 352 jlong size_t_max_value = (jlong)SIZE_MAX; 353 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 354 || iterations > size_t_max_value) { 355 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 356 return 2; 357 } 358 } 359 360 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 361 (size_t) magnitude, (size_t) iterations); 362 WB_END 363 364 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name)) 365 return GCConfig::is_gc_supported((CollectedHeap::Name)name); 366 WB_END 367 368 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name)) 369 #if INCLUDE_JVMCI 370 if (EnableJVMCI) { 371 // Enter the JVMCI env that will be used by the CompileBroker. 372 JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__); 373 return jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name); 374 } 375 #endif 376 return false; 377 WB_END 378 379 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name)) 380 return GCConfig::is_gc_selected((CollectedHeap::Name)name); 381 WB_END 382 383 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o)) 384 return GCConfig::is_gc_selected_ergonomically(); 385 WB_END 386 387 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 388 oop p = JNIHandles::resolve(obj); 389 #if INCLUDE_G1GC 390 if (UseG1GC) { 391 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 392 const HeapRegion* hr = g1h->heap_region_containing(p); 393 return !(hr->is_young()); 394 } 395 #endif 396 #if INCLUDE_PARALLELGC 397 if (UseParallelGC) { 398 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 399 return !psh->is_in_young(p); 400 } 401 #endif 402 #if INCLUDE_ZGC 403 if (UseZGC) { 404 if (ZGenerational) { 405 return ZHeap::heap()->is_old(to_zaddress(p)); 406 } else { 407 return Universe::heap()->is_in(p); 408 } 409 } 410 #endif 411 #if INCLUDE_SHENANDOAHGC 412 if (UseShenandoahGC) { 413 return Universe::heap()->is_in(p); 414 } 415 #endif 416 GenCollectedHeap* gch = GenCollectedHeap::heap(); 417 return !gch->is_in_young(p); 418 WB_END 419 420 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 421 oop p = JNIHandles::resolve(obj); 422 return p->size() * HeapWordSize; 423 WB_END 424 425 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 426 return (jlong)SpaceAlignment; 427 WB_END 428 429 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 430 return (jlong)HeapAlignment; 431 WB_END 432 433 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o)) 434 return Universe::heap()->supports_concurrent_gc_breakpoints(); 435 WB_END 436 437 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o)) 438 ConcurrentGCBreakpoints::acquire_control(); 439 WB_END 440 441 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o)) 442 ConcurrentGCBreakpoints::release_control(); 443 WB_END 444 445 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o)) 446 ConcurrentGCBreakpoints::run_to_idle(); 447 WB_END 448 449 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at)) 450 Handle h_name(THREAD, JNIHandles::resolve(at)); 451 ResourceMark rm; 452 const char* c_name = java_lang_String::as_utf8_string(h_name()); 453 return ConcurrentGCBreakpoints::run_to(c_name); 454 WB_END 455 456 #if INCLUDE_G1GC 457 458 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 459 if (UseG1GC) { 460 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 461 oop result = JNIHandles::resolve(obj); 462 const HeapRegion* hr = g1h->heap_region_containing(result); 463 return hr->is_humongous(); 464 } 465 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 466 WB_END 467 468 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 469 if (UseG1GC) { 470 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 471 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 472 return hr->is_humongous(); 473 } 474 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 475 WB_END 476 477 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 478 if (UseG1GC) { 479 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 480 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 481 return hr->is_free(); 482 } 483 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 484 WB_END 485 486 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 487 if (UseG1GC) { 488 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 489 size_t nr = g1h->max_regions(); 490 return (jlong)nr; 491 } 492 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 493 WB_END 494 495 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 496 if (UseG1GC) { 497 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 498 size_t nr = g1h->num_free_regions(); 499 return (jlong)nr; 500 } 501 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 502 WB_END 503 504 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 505 if (UseG1GC) { 506 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 507 return g1h->concurrent_mark()->cm_thread()->in_progress(); 508 } 509 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 510 WB_END 511 512 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o)) 513 if (UseG1GC) { 514 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 515 G1ConcurrentMark* cm = g1h->concurrent_mark(); 516 return cm->completed_mark_cycles(); 517 } 518 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled"); 519 WB_END 520 521 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 522 if (UseG1GC) { 523 return (jint)HeapRegion::GrainBytes; 524 } 525 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 526 WB_END 527 528 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o)) 529 if (UseG1GC) { 530 return G1CollectedHeap::heap()->has_uncommittable_regions(); 531 } 532 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled"); 533 WB_END 534 535 #endif // INCLUDE_G1GC 536 537 #if INCLUDE_PARALLELGC 538 539 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 540 if (UseParallelGC) { 541 return GenAlignment; 542 } 543 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 544 WB_END 545 546 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 547 if (UseParallelGC) { 548 return GenAlignment; 549 } 550 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 551 WB_END 552 553 #endif // INCLUDE_PARALLELGC 554 555 #if INCLUDE_G1GC 556 557 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 558 if (UseG1GC) { 559 ResourceMark rm(THREAD); 560 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 561 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 562 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 563 return JNIHandles::make_local(THREAD, h()); 564 } 565 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 566 WB_END 567 568 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o)) 569 if (UseG1GC) { 570 G1NUMA* numa = G1NUMA::numa(); 571 return (jint)numa->num_active_nodes(); 572 } 573 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled"); 574 WB_END 575 576 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o)) 577 if (UseG1GC) { 578 G1NUMA* numa = G1NUMA::numa(); 579 int num_node_ids = (int)numa->num_active_nodes(); 580 const int* node_ids = numa->node_ids(); 581 582 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL); 583 for (int i = 0; i < num_node_ids; i++) { 584 result->int_at_put(i, (jint)node_ids[i]); 585 } 586 return (jintArray) JNIHandles::make_local(THREAD, result); 587 } 588 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled"); 589 WB_END 590 591 class OldRegionsLivenessClosure: public HeapRegionClosure { 592 593 private: 594 const int _liveness; 595 size_t _total_count; 596 size_t _total_memory; 597 size_t _total_memory_to_free; 598 599 public: 600 OldRegionsLivenessClosure(int liveness) : 601 _liveness(liveness), 602 _total_count(0), 603 _total_memory(0), 604 _total_memory_to_free(0) { } 605 606 size_t total_count() { return _total_count; } 607 size_t total_memory() { return _total_memory; } 608 size_t total_memory_to_free() { return _total_memory_to_free; } 609 610 bool do_heap_region(HeapRegion* r) { 611 if (r->is_old()) { 612 size_t live = r->live_bytes(); 613 size_t size = r->used(); 614 size_t reg_size = HeapRegion::GrainBytes; 615 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 616 _total_memory += size; 617 ++_total_count; 618 if (size == reg_size) { 619 // We don't include non-full regions since they are unlikely included in mixed gc 620 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 621 _total_memory_to_free += size - live; 622 } 623 } 624 } 625 return false; 626 } 627 }; 628 629 630 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 631 if (!UseG1GC) { 632 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 633 } 634 if (liveness < 0) { 635 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 636 } 637 638 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 639 OldRegionsLivenessClosure rli(liveness); 640 g1h->heap_region_iterate(&rli); 641 642 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 643 result->long_at_put(0, rli.total_count()); 644 result->long_at_put(1, rli.total_memory()); 645 result->long_at_put(2, rli.total_memory_to_free()); 646 return (jlongArray) JNIHandles::make_local(THREAD, result); 647 WB_END 648 649 #endif // INCLUDE_G1GC 650 651 // Alloc memory using the test memory type so that we can use that to see if 652 // NMT picks it up correctly 653 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 654 jlong addr = 0; 655 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 656 return addr; 657 WB_END 658 659 // Alloc memory with pseudo call stack. The test can create pseudo malloc 660 // allocation site to stress the malloc tracking. 661 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 662 address pc = (address)(size_t)pseudo_stack; 663 NativeCallStack stack(&pc, 1); 664 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 665 WB_END 666 667 // Alloc memory with pseudo call stack and specific memory type. 668 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type)) 669 address pc = (address)(size_t)pseudo_stack; 670 NativeCallStack stack(&pc, 1); 671 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack); 672 WB_END 673 674 // Free the memory allocated by NMTAllocTest 675 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 676 os::free((void*)(uintptr_t)mem); 677 WB_END 678 679 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 680 jlong addr = 0; 681 682 addr = (jlong)(uintptr_t)os::reserve_memory(size); 683 MemTracker::record_virtual_memory_type((address)addr, mtTest); 684 685 return addr; 686 WB_END 687 688 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size)) 689 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size); 690 MemTracker::record_virtual_memory_type((address)addr, mtTest); 691 692 return addr; 693 WB_END 694 695 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 696 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 697 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 698 WB_END 699 700 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 701 os::uncommit_memory((char *)(uintptr_t)addr, size); 702 WB_END 703 704 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 705 os::release_memory((char *)(uintptr_t)addr, size); 706 WB_END 707 708 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 709 int hash_size = MallocSiteTable::hash_buckets(); 710 assert(hash_size > 0, "NMT hash_size should be > 0"); 711 return (jint)hash_size; 712 WB_END 713 714 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size)) 715 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size)); 716 return (jlong)arena; 717 WB_END 718 719 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena)) 720 Arena* a = (Arena*)arena; 721 delete a; 722 WB_END 723 724 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size)) 725 Arena* a = (Arena*)arena; 726 a->Amalloc(size_t(size)); 727 WB_END 728 729 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 730 assert(method != nullptr, "method should not be null"); 731 ThreadToNativeFromVM ttn(thread); 732 return env->FromReflectedMethod(method); 733 } 734 735 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 736 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 737 private: 738 int _result; 739 const bool _make_not_entrant; 740 public: 741 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 742 _result(0), _make_not_entrant(make_not_entrant) { } 743 int result() const { return _result; } 744 745 void doit() { 746 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 747 if (t->has_last_Java_frame()) { 748 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) { 749 frame* f = fst.current(); 750 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 751 Deoptimization::deoptimize(t, *f); 752 if (_make_not_entrant) { 753 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 754 assert(cm != nullptr, "sanity check"); 755 cm->make_not_entrant(); 756 } 757 ++_result; 758 } 759 } 760 } 761 } 762 } 763 }; 764 765 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 766 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 767 VMThread::execute(&op); 768 return op.result(); 769 WB_END 770 771 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth)) 772 bool result = false; 773 if (thread->has_last_Java_frame()) { 774 ResourceMark rm(THREAD); 775 RegisterMap reg_map(thread, 776 RegisterMap::UpdateMap::include, 777 RegisterMap::ProcessFrames::include, 778 RegisterMap::WalkContinuation::skip); 779 javaVFrame *jvf = thread->last_java_vframe(®_map); 780 for (jint d = 0; d < depth && jvf != nullptr; d++) { 781 jvf = jvf->java_sender(); 782 } 783 result = jvf != nullptr && jvf->fr().is_deoptimized_frame(); 784 } 785 return result; 786 WB_END 787 788 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 789 DeoptimizationScope deopt_scope; 790 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope); 791 deopt_scope.deoptimize_marked(); 792 WB_END 793 794 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 795 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 796 int result = 0; 797 CHECK_JNI_EXCEPTION_(env, result); 798 799 DeoptimizationScope deopt_scope; 800 { 801 MutexLocker mu(Compile_lock); 802 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 803 if (is_osr) { 804 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh()); 805 } else { 806 MutexLocker ml(CompiledMethod_lock, Mutex::_no_safepoint_check_flag); 807 if (mh->code() != nullptr) { 808 deopt_scope.mark(mh->code()); 809 ++result; 810 } 811 } 812 CodeCache::mark_for_deoptimization(&deopt_scope, mh()); 813 } 814 815 deopt_scope.deoptimize_marked(); 816 817 return result; 818 WB_END 819 820 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 821 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 822 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 823 MutexLocker mu(Compile_lock); 824 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 825 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 826 if (code == nullptr) { 827 return JNI_FALSE; 828 } 829 return !code->is_marked_for_deoptimization(); 830 WB_END 831 832 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) { 833 if (comp == nullptr) { 834 return true; 835 } 836 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 837 bool exclude = directive->ExcludeOption; 838 DirectivesStack::release(directive); 839 return exclude; 840 } 841 842 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) { 843 if (is_osr) { 844 return CompilationPolicy::can_be_osr_compiled(mh, level); 845 } else { 846 return CompilationPolicy::can_be_compiled(mh, level); 847 } 848 } 849 850 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 851 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) { 852 return false; 853 } 854 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 855 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 856 MutexLocker mu(Compile_lock); 857 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 858 859 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by 860 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive 861 // to exclude a compilation of 'method'. 862 if (comp_level == CompLevel_any) { 863 // Both compilers could have ExcludeOption set. Check all combinations. 864 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh); 865 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh); 866 if (excluded_c1 && excluded_c2) { 867 // Compilation of 'method' excluded by both compilers. 868 return false; 869 } 870 871 if (excluded_c1) { 872 // C1 only has ExcludeOption set: Check if compilable with C2. 873 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization); 874 } else if (excluded_c2) { 875 // C2 only has ExcludeOption set: Check if compilable with C1. 876 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple); 877 } 878 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) { 879 // Compilation of 'method' excluded by compiler used for 'comp_level'. 880 return false; 881 } 882 883 return can_be_compiled_at_level(mh, is_osr, (int)comp_level); 884 WB_END 885 886 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 887 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 888 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 889 MutexLocker mu(Compile_lock); 890 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 891 return mh->queued_for_compilation(); 892 WB_END 893 894 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 895 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) { 896 return false; // Intrinsic is not available on a non-existent compilation level. 897 } 898 jmethodID method_id, compilation_context_id; 899 method_id = reflected_method_to_jmid(thread, env, method); 900 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 901 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 902 903 DirectiveSet* directive; 904 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 905 assert(comp != nullptr, "compiler not available"); 906 if (compilation_context != nullptr) { 907 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 908 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 909 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 910 directive = DirectivesStack::getMatchingDirective(cch, comp); 911 } else { 912 // Calling with null matches default directive 913 directive = DirectivesStack::getDefaultDirective(comp); 914 } 915 bool result = comp->is_intrinsic_available(mh, directive); 916 DirectivesStack::release(directive); 917 return result; 918 WB_END 919 920 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 921 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 922 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 923 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 924 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 925 return (code != nullptr ? code->comp_level() : CompLevel_none); 926 WB_END 927 928 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 929 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 930 CHECK_JNI_EXCEPTION(env); 931 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 932 if (is_osr) { 933 mh->set_not_osr_compilable("WhiteBox", comp_level); 934 } else { 935 mh->set_not_compilable("WhiteBox", comp_level); 936 } 937 WB_END 938 939 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method)) 940 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 941 CHECK_JNI_EXCEPTION_(env, 0); 942 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 943 uint cnt = 0; 944 MethodData* mdo = mh->method_data(); 945 if (mdo != nullptr) { 946 cnt = mdo->decompile_count(); 947 } 948 return cnt; 949 WB_END 950 951 // Get the trap count of a method for a specific reason. If the trap count for 952 // that reason did overflow, this includes the overflow trap count of the method. 953 // If 'reason' is null, the sum of the traps for all reasons will be returned. 954 // This number includes the overflow trap count if the trap count for any reason 955 // did overflow. 956 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj)) 957 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 958 CHECK_JNI_EXCEPTION_(env, 0); 959 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 960 uint cnt = 0; 961 MethodData* mdo = mh->method_data(); 962 if (mdo != nullptr) { 963 ResourceMark rm(THREAD); 964 char* reason_str = (reason_obj == nullptr) ? 965 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj)); 966 bool overflow = false; 967 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) { 968 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) { 969 cnt = mdo->trap_count(reason); 970 // Count in the overflow trap count on overflow 971 if (cnt == (uint)-1) { 972 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count(); 973 } 974 break; 975 } else if (reason_str == nullptr) { 976 uint c = mdo->trap_count(reason); 977 if (c == (uint)-1) { 978 c = mdo->trap_count_limit(); 979 if (!overflow) { 980 // Count overflow trap count just once 981 overflow = true; 982 c += mdo->overflow_trap_count(); 983 } 984 } 985 cnt += c; 986 } 987 } 988 } 989 return cnt; 990 WB_END 991 992 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj)) 993 if (reason_obj == nullptr && action_obj == nullptr) { 994 return Deoptimization::total_deoptimization_count(); 995 } 996 ResourceMark rm(THREAD); 997 const char *reason_str = (reason_obj == nullptr) ? 998 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj)); 999 const char *action_str = (action_obj == nullptr) ? 1000 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj)); 1001 1002 return Deoptimization::deoptimization_count(reason_str, action_str); 1003 WB_END 1004 1005 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 1006 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1007 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 1008 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1009 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 1010 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 1011 WB_END 1012 1013 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1014 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1015 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1016 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1017 bool result = mh->dont_inline(); 1018 mh->set_dont_inline(value == JNI_TRUE); 1019 return result; 1020 WB_END 1021 1022 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 1023 if (comp_level == CompLevel_any) { 1024 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 1025 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 1026 } else { 1027 return CompileBroker::queue_size(comp_level); 1028 } 1029 WB_END 1030 1031 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1032 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1033 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1034 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1035 bool result = mh->force_inline(); 1036 mh->set_force_inline(value == JNI_TRUE); 1037 return result; 1038 WB_END 1039 1040 #ifdef LINUX 1041 bool WhiteBox::validate_cgroup(const char* proc_cgroups, 1042 const char* proc_self_cgroup, 1043 const char* proc_self_mountinfo, 1044 u1* cg_flags) { 1045 CgroupInfo cg_infos[CG_INFO_LENGTH]; 1046 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups, 1047 proc_self_cgroup, 1048 proc_self_mountinfo, cg_flags); 1049 } 1050 #endif 1051 1052 bool WhiteBox::is_asan_enabled() { 1053 #ifdef ADDRESS_SANITIZER 1054 return true; 1055 #else 1056 return false; 1057 #endif 1058 } 1059 1060 bool WhiteBox::is_ubsan_enabled() { 1061 #ifdef UNDEFINED_BEHAVIOR_SANITIZER 1062 return true; 1063 #else 1064 return false; 1065 #endif 1066 } 1067 1068 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) { 1069 // Screen for unavailable/bad comp level or null method 1070 AbstractCompiler* comp = CompileBroker::compiler(comp_level); 1071 if (method == nullptr) { 1072 tty->print_cr("WB error: request to compile null method"); 1073 return false; 1074 } 1075 if (comp_level > CompilationPolicy::highest_compile_level()) { 1076 tty->print_cr("WB error: invalid compilation level %d", comp_level); 1077 return false; 1078 } 1079 if (comp == nullptr) { 1080 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level); 1081 return false; 1082 } 1083 1084 // Check if compilation is blocking 1085 methodHandle mh(THREAD, method); 1086 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 1087 bool is_blocking = !directive->BackgroundCompilationOption; 1088 DirectivesStack::release(directive); 1089 1090 // Compile method and check result 1091 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false); 1092 MutexLocker mu(THREAD, Compile_lock); 1093 bool is_queued = mh->queued_for_compilation(); 1094 if ((!is_blocking && is_queued) || nm != nullptr) { 1095 return true; 1096 } 1097 // Check code again because compilation may be finished before Compile_lock is acquired. 1098 if (bci == InvocationEntryBci) { 1099 CompiledMethod* code = mh->code(); 1100 if (code != nullptr && code->as_nmethod_or_null() != nullptr) { 1101 return true; 1102 } 1103 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) { 1104 return true; 1105 } 1106 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level); 1107 mh->print_short_name(tty); 1108 tty->cr(); 1109 if (is_blocking && is_queued) { 1110 tty->print_cr("WB error: blocking compilation is still in queue!"); 1111 } 1112 return false; 1113 } 1114 1115 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 1116 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1117 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1118 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 1119 WB_END 1120 1121 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 1122 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1123 Method* clinit = ik->class_initializer(); 1124 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) { 1125 return false; 1126 } 1127 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD); 1128 WB_END 1129 1130 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 1131 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1132 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1133 1134 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1135 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 1136 bool result = directive->PrintAssemblyOption; 1137 DirectivesStack::release(directive); 1138 1139 return result; 1140 WB_END 1141 1142 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1143 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1144 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1145 1146 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1147 1148 ResourceMark rm(THREAD); 1149 const char* error_msg = nullptr; 1150 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1151 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 1152 1153 if (m == nullptr) { 1154 assert(error_msg != nullptr, "Always have an error message"); 1155 tty->print_cr("Got error: %s", error_msg); 1156 return -1; // Pattern failed 1157 } 1158 1159 // Pattern works - now check if it matches 1160 int result; 1161 if (m->match(mh, InlineMatcher::force_inline)) { 1162 result = 2; // Force inline match 1163 } else if (m->match(mh, InlineMatcher::dont_inline)) { 1164 result = 1; // Dont inline match 1165 } else { 1166 result = 0; // No match 1167 } 1168 delete m; 1169 return result; 1170 WB_END 1171 1172 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1173 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1174 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1175 1176 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1177 1178 ResourceMark rm; 1179 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1180 1181 const char* error_msg = nullptr; 1182 1183 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false); 1184 if (m == nullptr) { 1185 assert(error_msg != nullptr, "Must have error_msg"); 1186 tty->print_cr("Got error: %s", error_msg); 1187 return -1; 1188 } 1189 1190 // Pattern works - now check if it matches 1191 int result = m->matches(mh); 1192 delete m; 1193 assert(result == 0 || result == 1, "Result out of range"); 1194 return result; 1195 WB_END 1196 1197 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method)) 1198 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1199 CHECK_JNI_EXCEPTION(env); 1200 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1201 1202 MethodData* mdo = mh->method_data(); 1203 if (mdo == nullptr) { 1204 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR); 1205 mdo = mh->method_data(); 1206 } 1207 mdo->init(); 1208 InvocationCounter* icnt = mdo->invocation_counter(); 1209 InvocationCounter* bcnt = mdo->backedge_counter(); 1210 // set i-counter according to CompilationPolicy::is_method_profiled 1211 icnt->set(Tier4MinInvocationThreshold); 1212 bcnt->set(Tier4CompileThreshold); 1213 WB_END 1214 1215 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 1216 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1217 CHECK_JNI_EXCEPTION(env); 1218 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1219 MutexLocker mu(THREAD, Compile_lock); 1220 MethodData* mdo = mh->method_data(); 1221 MethodCounters* mcs = mh->method_counters(); 1222 1223 if (mdo != nullptr) { 1224 mdo->init(); 1225 ResourceMark rm(THREAD); 1226 int arg_count = mdo->method()->size_of_parameters(); 1227 for (int i = 0; i < arg_count; i++) { 1228 mdo->set_arg_modified(i, 0); 1229 } 1230 MutexLocker mu(THREAD, mdo->extra_data_lock()); 1231 mdo->clean_method_data(/*always_clean*/true); 1232 } 1233 1234 mh->clear_is_not_c1_compilable(); 1235 mh->clear_is_not_c2_compilable(); 1236 mh->clear_is_not_c2_osr_compilable(); 1237 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 1238 if (mcs != nullptr) { 1239 mcs->clear_counters(); 1240 } 1241 WB_END 1242 1243 template <typename T, int type_enum> 1244 static bool GetVMFlag(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 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name); 1252 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value); 1253 env->ReleaseStringUTFChars(name, flag_name); 1254 return (result == JVMFlag::SUCCESS); 1255 } 1256 1257 template <typename T, int type_enum> 1258 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) { 1259 if (name == nullptr) { 1260 return false; 1261 } 1262 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1263 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1264 CHECK_JNI_EXCEPTION_(env, false); 1265 JVMFlag* flag = JVMFlag::find_flag(flag_name); 1266 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL); 1267 env->ReleaseStringUTFChars(name, flag_name); 1268 return (result == JVMFlag::SUCCESS); 1269 } 1270 1271 template <typename T> 1272 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1273 ResourceMark rm(thread); 1274 jclass clazz = env->FindClass(name->as_C_string()); 1275 CHECK_JNI_EXCEPTION_(env, nullptr); 1276 jmethodID methodID = env->GetStaticMethodID(clazz, 1277 vmSymbols::valueOf_name()->as_C_string(), 1278 sig->as_C_string()); 1279 CHECK_JNI_EXCEPTION_(env, nullptr); 1280 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1281 CHECK_JNI_EXCEPTION_(env, nullptr); 1282 return result; 1283 } 1284 1285 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1286 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1287 } 1288 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1289 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1290 } 1291 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1292 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1293 } 1294 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1295 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1296 }*/ 1297 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1298 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1299 } 1300 1301 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1302 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1303 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1304 CHECK_JNI_EXCEPTION_(env, nullptr); 1305 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name); 1306 env->ReleaseStringUTFChars(name, flag_name); 1307 return result; 1308 } 1309 1310 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1311 const JVMFlag* flag = getVMFlag(thread, env, name); 1312 return (flag != nullptr) && flag->is_constant_in_binary(); 1313 WB_END 1314 1315 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name)) 1316 const JVMFlag* flag = getVMFlag(thread, env, name); 1317 return (flag != nullptr) && flag->is_default(); 1318 WB_END 1319 1320 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1321 const JVMFlag* flag = getVMFlag(thread, env, name); 1322 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker()); 1323 WB_END 1324 1325 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1326 bool result; 1327 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) { 1328 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1329 return booleanBox(thread, env, result); 1330 } 1331 return nullptr; 1332 WB_END 1333 1334 template <typename T, int type_enum> 1335 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) { 1336 T result; 1337 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) { 1338 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1339 return longBox(thread, env, result); 1340 } 1341 return nullptr; 1342 } 1343 1344 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1345 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name); 1346 WB_END 1347 1348 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1349 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name); 1350 WB_END 1351 1352 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1353 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name); 1354 WB_END 1355 1356 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1357 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name); 1358 WB_END 1359 1360 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1361 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name); 1362 WB_END 1363 1364 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1365 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name); 1366 WB_END 1367 1368 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1369 double result; 1370 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) { 1371 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1372 return doubleBox(thread, env, result); 1373 } 1374 return nullptr; 1375 WB_END 1376 1377 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1378 ccstr ccstrResult; 1379 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) { 1380 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1381 jstring result = env->NewStringUTF(ccstrResult); 1382 CHECK_JNI_EXCEPTION_(env, nullptr); 1383 return result; 1384 } 1385 return nullptr; 1386 WB_END 1387 1388 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1389 bool result = value == JNI_TRUE ? true : false; 1390 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result); 1391 WB_END 1392 1393 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1394 int result = value; 1395 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result); 1396 WB_END 1397 1398 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1399 uint result = value; 1400 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result); 1401 WB_END 1402 1403 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1404 intx result = value; 1405 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result); 1406 WB_END 1407 1408 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1409 uintx result = value; 1410 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result); 1411 WB_END 1412 1413 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1414 uint64_t result = value; 1415 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result); 1416 WB_END 1417 1418 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1419 size_t result = value; 1420 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result); 1421 WB_END 1422 1423 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1424 double result = value; 1425 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result); 1426 WB_END 1427 1428 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1429 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1430 const char* ccstrValue; 1431 if (value == nullptr) { 1432 ccstrValue = nullptr; 1433 } 1434 else { 1435 ccstrValue = env->GetStringUTFChars(value, nullptr); 1436 CHECK_JNI_EXCEPTION(env); 1437 } 1438 { 1439 ccstr param = ccstrValue; 1440 ThreadInVMfromNative ttvfn(thread); // back to VM 1441 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) { 1442 assert(param == nullptr, "old value is freed automatically and not returned"); 1443 } 1444 } 1445 if (value != nullptr) { 1446 env->ReleaseStringUTFChars(value, ccstrValue); 1447 } 1448 WB_END 1449 1450 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1451 WhiteBox::compilation_locked = true; 1452 WB_END 1453 1454 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1455 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1456 WhiteBox::compilation_locked = false; 1457 mo.notify_all(); 1458 WB_END 1459 1460 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1461 ResourceMark rm(THREAD); 1462 int len; 1463 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1464 return (StringTable::lookup(name, len) != nullptr); 1465 WB_END 1466 1467 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1468 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1469 Universe::heap()->collect(GCCause::_wb_full_gc); 1470 #if INCLUDE_G1GC 1471 if (UseG1GC) { 1472 // Needs to be cleared explicitly for G1 1473 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1474 } 1475 #endif // INCLUDE_G1GC 1476 WB_END 1477 1478 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1479 Universe::heap()->collect(GCCause::_wb_young_gc); 1480 WB_END 1481 1482 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1483 // static+volatile in order to force the read to happen 1484 // (not be eliminated by the compiler) 1485 static char c; 1486 static volatile char* p; 1487 1488 p = os::reserve_memory(os::vm_allocation_granularity()); 1489 if (p == nullptr) { 1490 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1491 } 1492 1493 c = *p; 1494 WB_END 1495 1496 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1497 const char* features = VM_Version::features_string(); 1498 ThreadToNativeFromVM ttn(thread); 1499 jstring features_string = env->NewStringUTF(features); 1500 1501 CHECK_JNI_EXCEPTION_(env, nullptr); 1502 1503 return features_string; 1504 WB_END 1505 1506 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) { 1507 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1508 return CodeCache::get_code_heap(code)->code_blob_type(); 1509 } 1510 1511 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) { 1512 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1513 return CodeCache::get_code_heap(blob_type); 1514 } 1515 1516 struct CodeBlobStub { 1517 CodeBlobStub(const CodeBlob* blob) : 1518 name(os::strdup(blob->name())), 1519 size(blob->size()), 1520 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))), 1521 address((jlong) blob) { } 1522 ~CodeBlobStub() { os::free((void*) name); } 1523 const char* const name; 1524 const jint size; 1525 const jint blob_type; 1526 const jlong address; 1527 }; 1528 1529 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1530 ResourceMark rm; 1531 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1532 CHECK_JNI_EXCEPTION_(env, nullptr); 1533 jobjectArray result = env->NewObjectArray(4, clazz, nullptr); 1534 1535 jstring name = env->NewStringUTF(cb->name); 1536 CHECK_JNI_EXCEPTION_(env, nullptr); 1537 env->SetObjectArrayElement(result, 0, name); 1538 1539 jobject obj = integerBox(thread, env, cb->size); 1540 CHECK_JNI_EXCEPTION_(env, nullptr); 1541 env->SetObjectArrayElement(result, 1, obj); 1542 1543 obj = integerBox(thread, env, cb->blob_type); 1544 CHECK_JNI_EXCEPTION_(env, nullptr); 1545 env->SetObjectArrayElement(result, 2, obj); 1546 1547 obj = longBox(thread, env, cb->address); 1548 CHECK_JNI_EXCEPTION_(env, nullptr); 1549 env->SetObjectArrayElement(result, 3, obj); 1550 1551 return result; 1552 } 1553 1554 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1555 ResourceMark rm(THREAD); 1556 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1557 CHECK_JNI_EXCEPTION_(env, nullptr); 1558 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1559 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1560 jobjectArray result = nullptr; 1561 if (code == nullptr) { 1562 return result; 1563 } 1564 int comp_level = code->comp_level(); 1565 int insts_size = code->insts_size(); 1566 1567 ThreadToNativeFromVM ttn(thread); 1568 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1569 CHECK_JNI_EXCEPTION_(env, nullptr); 1570 result = env->NewObjectArray(5, clazz, nullptr); 1571 if (result == nullptr) { 1572 return result; 1573 } 1574 1575 CodeBlobStub stub(code); 1576 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1577 CHECK_JNI_EXCEPTION_(env, nullptr); 1578 env->SetObjectArrayElement(result, 0, codeBlob); 1579 1580 jobject level = integerBox(thread, env, comp_level); 1581 CHECK_JNI_EXCEPTION_(env, nullptr); 1582 env->SetObjectArrayElement(result, 1, level); 1583 1584 jbyteArray insts = env->NewByteArray(insts_size); 1585 CHECK_JNI_EXCEPTION_(env, nullptr); 1586 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1587 env->SetObjectArrayElement(result, 2, insts); 1588 1589 jobject id = integerBox(thread, env, code->compile_id()); 1590 CHECK_JNI_EXCEPTION_(env, nullptr); 1591 env->SetObjectArrayElement(result, 3, id); 1592 1593 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1594 CHECK_JNI_EXCEPTION_(env, nullptr); 1595 env->SetObjectArrayElement(result, 4, entry_point); 1596 1597 return result; 1598 WB_END 1599 1600 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) { 1601 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1602 BufferBlob* blob; 1603 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1604 if (full_size < size) { 1605 full_size += align_up(size - full_size, oopSize); 1606 } 1607 { 1608 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1609 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1610 if (blob != nullptr) { 1611 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1612 } 1613 } 1614 // Track memory usage statistic after releasing CodeCache_lock 1615 MemoryService::track_code_cache_memory_usage(); 1616 return blob; 1617 } 1618 1619 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1620 if (size < 0) { 1621 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1622 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1623 } 1624 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type)); 1625 WB_END 1626 1627 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1628 if (addr == 0) { 1629 return; 1630 } 1631 BufferBlob::free((BufferBlob*) addr); 1632 WB_END 1633 1634 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1635 ResourceMark rm; 1636 GrowableArray<CodeBlobStub*> blobs; 1637 { 1638 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1639 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type)); 1640 if (heap == nullptr) { 1641 return nullptr; 1642 } 1643 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1644 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) { 1645 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1646 new (stub) CodeBlobStub(cb); 1647 blobs.append(stub); 1648 } 1649 } 1650 ThreadToNativeFromVM ttn(thread); 1651 jobjectArray result = nullptr; 1652 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1653 CHECK_JNI_EXCEPTION_(env, nullptr); 1654 result = env->NewObjectArray(blobs.length(), clazz, nullptr); 1655 CHECK_JNI_EXCEPTION_(env, nullptr); 1656 if (result == nullptr) { 1657 return result; 1658 } 1659 int i = 0; 1660 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1661 it != blobs.end(); ++it) { 1662 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1663 CHECK_JNI_EXCEPTION_(env, nullptr); 1664 env->SetObjectArrayElement(result, i, obj); 1665 CHECK_JNI_EXCEPTION_(env, nullptr); 1666 ++i; 1667 } 1668 return result; 1669 WB_END 1670 1671 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1672 return CompileBroker::get_compilation_activity_mode(); 1673 WB_END 1674 1675 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1676 if (addr == 0) { 1677 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1678 "WB_GetCodeBlob: addr is null"); 1679 } 1680 ThreadToNativeFromVM ttn(thread); 1681 CodeBlobStub stub((CodeBlob*) addr); 1682 return codeBlob2objectArray(thread, env, &stub); 1683 WB_END 1684 1685 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1686 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1687 CHECK_JNI_EXCEPTION_(env, 0); 1688 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1689 return (jlong) mh->method_data(); 1690 WB_END 1691 1692 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1693 return (jlong) thread->stack_size(); 1694 WB_END 1695 1696 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1697 return (jlong) thread->stack_overflow_state()->stack_available( 1698 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size(); 1699 WB_END 1700 1701 1702 int WhiteBox::array_bytes_to_length(size_t bytes) { 1703 return Array<u1>::bytes_to_length(bytes); 1704 } 1705 1706 /////////////// 1707 // MetaspaceTestContext and MetaspaceTestArena 1708 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit)) 1709 metaspace::MetaspaceTestContext* context = 1710 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit); 1711 return (jlong)p2i(context); 1712 WB_END 1713 1714 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1715 delete (metaspace::MetaspaceTestContext*) context; 1716 WB_END 1717 1718 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1719 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1720 context0->purge_area(); 1721 WB_END 1722 1723 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1724 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1725 context0->print_on(tty); 1726 WB_END 1727 1728 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1729 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1730 return context0->committed_words(); 1731 WB_END 1732 1733 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1734 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1735 return context0->used_words(); 1736 WB_END 1737 1738 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro)) 1739 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType; 1740 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1741 return (jlong)p2i(context0->create_arena(type)); 1742 WB_END 1743 1744 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena)) 1745 delete (metaspace::MetaspaceTestArena*) arena; 1746 WB_END 1747 1748 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size)) 1749 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena; 1750 MetaWord* p = arena0->allocate((size_t) word_size); 1751 return (jlong)p2i(p); 1752 WB_END 1753 1754 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size)) 1755 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena; 1756 arena0->deallocate((MetaWord*)p, (size_t) word_size); 1757 WB_END 1758 1759 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb)) 1760 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord; 1761 WB_END 1762 1763 ////////////// 1764 1765 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1766 if (size < 0) { 1767 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1768 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1769 } 1770 1771 oop class_loader_oop = JNIHandles::resolve(class_loader); 1772 ClassLoaderData* cld = class_loader_oop != nullptr 1773 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1774 : ClassLoaderData::the_null_class_loader_data(); 1775 1776 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1777 1778 return (jlong)(uintptr_t)metadata; 1779 WB_END 1780 1781 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1782 jstring version, jstring location, jobjectArray packages)) 1783 Handle h_module (THREAD, JNIHandles::resolve(module)); 1784 Modules::define_module(h_module, is_open, version, location, packages, CHECK); 1785 WB_END 1786 1787 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1788 Handle h_from_module (THREAD, JNIHandles::resolve(from_module)); 1789 Handle h_to_module (THREAD, JNIHandles::resolve(to_module)); 1790 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK); 1791 WB_END 1792 1793 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1794 Handle h_module (THREAD, JNIHandles::resolve(module)); 1795 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK); 1796 WB_END 1797 1798 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1799 Handle h_module (THREAD, JNIHandles::resolve(module)); 1800 Modules::add_module_exports(h_module, package, Handle(), CHECK); 1801 WB_END 1802 1803 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1804 Handle h_from_module (THREAD, JNIHandles::resolve(from_module)); 1805 Handle h_source_module (THREAD, JNIHandles::resolve(source_module)); 1806 Modules::add_reads_module(h_from_module, h_source_module, CHECK); 1807 WB_END 1808 1809 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1810 if (inc < 0) { 1811 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1812 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1813 } 1814 1815 jlong max_size_t = (jlong) ((size_t) -1); 1816 if (inc > max_size_t) { 1817 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1818 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1819 } 1820 1821 size_t new_cap_until_GC = 0; 1822 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1823 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1824 if (!success) { 1825 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1826 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1827 "due to contention with another thread"); 1828 } 1829 return (jlong) new_cap_until_GC; 1830 WB_END 1831 1832 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1833 return (jlong) MetaspaceGC::capacity_until_GC(); 1834 WB_END 1835 1836 // The function is only valid when CDS is available. 1837 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb)) 1838 #if INCLUDE_CDS 1839 return (jlong)MetaspaceShared::core_region_alignment(); 1840 #else 1841 ShouldNotReachHere(); 1842 return 0L; 1843 #endif 1844 WB_END 1845 1846 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1847 oop obj_oop = JNIHandles::resolve(obj); 1848 return (jboolean) obj_oop->mark().has_monitor(); 1849 WB_END 1850 1851 WB_ENTRY(jboolean, WB_IsAsanEnabled(JNIEnv* env)) 1852 return (jboolean) WhiteBox::is_asan_enabled(); 1853 WB_END 1854 1855 WB_ENTRY(jboolean, WB_IsUbsanEnabled(JNIEnv* env)) 1856 return (jboolean) WhiteBox::is_ubsan_enabled(); 1857 WB_END 1858 1859 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb)) 1860 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors"); 1861 return ObjectSynchronizer::request_deflate_idle_monitors_from_wb(); 1862 WB_END 1863 1864 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1865 VM_ForceSafepoint force_safepoint_op; 1866 VMThread::execute(&force_safepoint_op); 1867 WB_END 1868 1869 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb)) 1870 nullStream dev_null; 1871 ClassLoaderStatsVMOperation force_op(&dev_null); 1872 VMThread::execute(&force_op); 1873 WB_END 1874 1875 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1876 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1877 return (jlong) ik->constants(); 1878 WB_END 1879 1880 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1881 return ConstantPool::CPCACHE_INDEX_TAG; 1882 WB_END 1883 1884 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1885 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1886 ConstantPool* cp = ik->constants(); 1887 if (cp->cache() == nullptr) { 1888 return -1; 1889 } 1890 return cp->cache()->length(); 1891 WB_END 1892 1893 WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass)) 1894 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1895 objArrayOop resolved_refs= ik->constants()->resolved_references(); 1896 return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs); 1897 WB_END 1898 1899 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1900 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1901 ConstantPool* cp = ik->constants(); 1902 if (cp->cache() == nullptr) { 1903 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1904 } 1905 jint cpci = index; 1906 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1907 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1908 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1909 } 1910 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1911 return cpi; 1912 WB_END 1913 1914 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1915 return ConstantPool::encode_invokedynamic_index(index); 1916 WB_END 1917 1918 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass)) 1919 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1920 ConstantPool* cp = ik->constants(); 1921 if (cp->cache() == nullptr) { 1922 return -1; 1923 } 1924 return cp->resolved_indy_entries_length(); 1925 WB_END 1926 1927 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index)) 1928 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1929 ConstantPool* cp = ik->constants(); 1930 if (cp->cache() == nullptr) { 1931 return -1; 1932 } 1933 return cp->resolved_indy_entry_at(index)->constant_pool_index(); 1934 WB_END 1935 1936 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1937 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1938 VMThread::execute(&clear_ics); 1939 WB_END 1940 1941 template <typename T> 1942 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1943 assert(value != nullptr, "sanity"); 1944 if (method == nullptr || name == nullptr) { 1945 return false; 1946 } 1947 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1948 CHECK_JNI_EXCEPTION_(env, false); 1949 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1950 // can't be in VM when we call JNI 1951 ThreadToNativeFromVM ttnfv(thread); 1952 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1953 CHECK_JNI_EXCEPTION_(env, false); 1954 enum CompileCommand option = CompilerOracle::string_to_option(flag_name); 1955 env->ReleaseStringUTFChars(name, flag_name); 1956 if (option == CompileCommand::Unknown) { 1957 return false; 1958 } 1959 if (!CompilerOracle::option_matches_type(option, *value)) { 1960 return false; 1961 } 1962 return CompilerOracle::has_option_value(mh, option, *value); 1963 } 1964 1965 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1966 bool result; 1967 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1968 // can't be in VM when we call JNI 1969 ThreadToNativeFromVM ttnfv(thread); 1970 return booleanBox(thread, env, result); 1971 } 1972 return nullptr; 1973 WB_END 1974 1975 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1976 intx result; 1977 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1978 // can't be in VM when we call JNI 1979 ThreadToNativeFromVM ttnfv(thread); 1980 return longBox(thread, env, result); 1981 } 1982 return nullptr; 1983 WB_END 1984 1985 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1986 uintx result; 1987 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1988 // can't be in VM when we call JNI 1989 ThreadToNativeFromVM ttnfv(thread); 1990 return longBox(thread, env, result); 1991 } 1992 return nullptr; 1993 WB_END 1994 1995 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1996 double result; 1997 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1998 // can't be in VM when we call JNI 1999 ThreadToNativeFromVM ttnfv(thread); 2000 return doubleBox(thread, env, result); 2001 } 2002 return nullptr; 2003 WB_END 2004 2005 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2006 ccstr ccstrResult; 2007 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 2008 // can't be in VM when we call JNI 2009 ThreadToNativeFromVM ttnfv(thread); 2010 jstring result = env->NewStringUTF(ccstrResult); 2011 CHECK_JNI_EXCEPTION_(env, nullptr); 2012 return result; 2013 } 2014 return nullptr; 2015 WB_END 2016 2017 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb)) 2018 const char* p = Arguments::get_default_shared_archive_path(); 2019 ThreadToNativeFromVM ttn(thread); 2020 jstring path_string = env->NewStringUTF(p); 2021 2022 CHECK_JNI_EXCEPTION_(env, nullptr); 2023 2024 return path_string; 2025 WB_END 2026 2027 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb)) 2028 return UseSharedSpaces; 2029 WB_END 2030 2031 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb)) 2032 #if INCLUDE_CDS 2033 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION; 2034 #else 2035 ShouldNotReachHere(); 2036 return (jint)-1; 2037 #endif 2038 WB_END 2039 2040 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb)) 2041 #if INCLUDE_CDS 2042 return (jint)CURRENT_CDS_ARCHIVE_VERSION; 2043 #else 2044 ShouldNotReachHere(); 2045 return (jint)-1; 2046 #endif 2047 WB_END 2048 2049 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb)) 2050 return FileMapInfo::memory_mapping_failed(); 2051 WB_END 2052 2053 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str)) 2054 ResourceMark rm(THREAD); 2055 oop str_oop = JNIHandles::resolve(str); 2056 int length; 2057 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false)); 2058 return StringTable::lookup_shared(chars, length) == str_oop; 2059 WB_END 2060 2061 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 2062 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2063 WB_END 2064 2065 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env)) 2066 return ArchiveHeapLoader::is_mapped(); 2067 WB_END 2068 2069 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz)) 2070 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 2071 if (!k->is_instance_klass()) { 2072 return; 2073 } 2074 InstanceKlass *ik = InstanceKlass::cast(k); 2075 ik->link_class(THREAD); // may throw verification error 2076 WB_END 2077 2078 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 2079 return ArchiveHeapLoader::is_mapped(); 2080 WB_END 2081 2082 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env)) 2083 #if INCLUDE_CDS 2084 return true; 2085 #else 2086 return false; 2087 #endif // INCLUDE_CDS 2088 WB_END 2089 2090 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env)) 2091 #if COMPILER2_OR_JVMCI 2092 return true; 2093 #else 2094 return false; 2095 #endif 2096 WB_END 2097 2098 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env)) 2099 #if INCLUDE_JVMCI 2100 return JVMCIGlobals::gc_supports_jvmci(); 2101 #else 2102 return false; 2103 #endif 2104 WB_END 2105 2106 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env)) 2107 return HeapShared::can_write(); 2108 WB_END 2109 2110 2111 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env)) 2112 #if INCLUDE_JFR 2113 return true; 2114 #else 2115 return false; 2116 #endif // INCLUDE_JFR 2117 WB_END 2118 2119 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env)) 2120 #if defined(DTRACE_ENABLED) 2121 return true; 2122 #else 2123 return false; 2124 #endif // DTRACE_ENABLED 2125 WB_END 2126 2127 #if INCLUDE_CDS 2128 2129 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name)) 2130 ResourceMark rm; 2131 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 2132 jint result = (jint)CDSConstants::get_cds_offset(c_name); 2133 return result; 2134 WB_END 2135 2136 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name)) 2137 ResourceMark rm; 2138 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 2139 jint result = (jint)CDSConstants::get_cds_constant(c_name); 2140 return result; 2141 WB_END 2142 2143 #endif // INCLUDE_CDS 2144 2145 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle)) 2146 class ReadMonitorsClosure : public HandshakeClosure { 2147 jboolean _executed; 2148 2149 void do_thread(Thread* th) { 2150 JavaThread* jt = JavaThread::cast(th); 2151 ResourceMark rm; 2152 2153 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>(); 2154 2155 if (!jt->has_last_Java_frame()) { 2156 return; 2157 } 2158 RegisterMap rmap(jt, 2159 RegisterMap::UpdateMap::include, 2160 RegisterMap::ProcessFrames::include, 2161 RegisterMap::WalkContinuation::skip); 2162 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) { 2163 GrowableArray<MonitorInfo*> *monitors = vf->monitors(); 2164 if (monitors != nullptr) { 2165 int len = monitors->length(); 2166 // Walk monitors youngest to oldest 2167 for (int i = len - 1; i >= 0; i--) { 2168 MonitorInfo* mon_info = monitors->at(i); 2169 if (mon_info->eliminated()) continue; 2170 oop owner = mon_info->owner(); 2171 if (owner != nullptr) { 2172 info->append(mon_info); 2173 } 2174 } 2175 } 2176 } 2177 _executed = true; 2178 } 2179 2180 public: 2181 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {} 2182 jboolean executed() const { return _executed; } 2183 }; 2184 2185 ReadMonitorsClosure rmc; 2186 if (thread_handle != nullptr) { 2187 ThreadsListHandle tlh; 2188 JavaThread* target = nullptr; 2189 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2190 if (is_alive) { 2191 Handshake::execute(&rmc, &tlh, target); 2192 } 2193 } 2194 return rmc.executed(); 2195 WB_END 2196 2197 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 2198 class TraceSelfClosure : public HandshakeClosure { 2199 jint _num_threads_completed; 2200 2201 void do_thread(Thread* th) { 2202 JavaThread* jt = JavaThread::cast(th); 2203 ResourceMark rm; 2204 2205 jt->print_on(tty); 2206 jt->print_stack_on(tty); 2207 tty->cr(); 2208 Atomic::inc(&_num_threads_completed); 2209 } 2210 2211 public: 2212 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {} 2213 2214 jint num_threads_completed() const { return _num_threads_completed; } 2215 }; 2216 TraceSelfClosure tsc(Thread::current()); 2217 2218 if (all_threads) { 2219 Handshake::execute(&tsc); 2220 } else if (thread_handle != nullptr) { 2221 ThreadsListHandle tlh; 2222 JavaThread* target = nullptr; 2223 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2224 if (is_alive) { 2225 Handshake::execute(&tsc, &tlh, target); 2226 } 2227 } 2228 return tsc.num_threads_completed(); 2229 WB_END 2230 2231 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle)) 2232 class TraceSelfClosure : public AsyncHandshakeClosure { 2233 JavaThread* _self; 2234 void do_thread(Thread* th) { 2235 assert(th->is_Java_thread(), "sanity"); 2236 // AsynchHandshake handshakes are only executed by target. 2237 assert(_self == th, "Must be"); 2238 assert(Thread::current() == th, "Must be"); 2239 JavaThread* jt = JavaThread::cast(th); 2240 ResourceMark rm; 2241 jt->print_on(tty); 2242 jt->print_stack_on(tty); 2243 tty->cr(); 2244 } 2245 2246 public: 2247 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {} 2248 }; 2249 if (thread_handle != nullptr) { 2250 ThreadsListHandle tlh; 2251 JavaThread* target = nullptr; 2252 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2253 if (is_alive) { 2254 TraceSelfClosure* tsc = new TraceSelfClosure(target); 2255 Handshake::execute(tsc, target); 2256 } 2257 } 2258 WB_END 2259 2260 static volatile int _emulated_lock = 0; 2261 2262 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender)) 2263 JavaThread* self = JavaThread::current(); 2264 2265 { 2266 // Before trying to acquire the lock transition into a safepoint safe state. 2267 // Otherwise if either suspender or suspendee blocks for a safepoint 2268 // in ~ThreadBlockInVM the other one could loop forever trying to acquire 2269 // the lock without allowing the safepoint to progress. 2270 ThreadBlockInVM tbivm(self); 2271 2272 // We will deadlock here if we are 'suspender' and 'suspendee' 2273 // suspended in ~ThreadBlockInVM. This verifies we only suspend 2274 // at the right place. 2275 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {} 2276 assert(_emulated_lock == 1, "Must be locked"); 2277 2278 // Sleep much longer in suspendee to force situation where 2279 // 'suspender' is waiting above to acquire lock. 2280 os::naked_short_sleep(suspender ? 1 : 10); 2281 } 2282 Atomic::store(&_emulated_lock, 0); 2283 WB_END 2284 2285 // Some convenience methods to deal with objects from java 2286 int WhiteBox::offset_for_field(const char* field_name, oop object, 2287 Symbol* signature_symbol) { 2288 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid"); 2289 2290 //Get the class of our object 2291 Klass* arg_klass = object->klass(); 2292 //Turn it into an instance-klass 2293 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 2294 2295 //Create symbols to look for in the class 2296 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name); 2297 2298 //To be filled in with an offset of the field we're looking for 2299 fieldDescriptor fd; 2300 2301 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 2302 if (res == nullptr) { 2303 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 2304 name_symbol->as_C_string()); 2305 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 2306 } 2307 2308 //fetch the field at the offset we've found 2309 int dest_offset = fd.offset(); 2310 2311 return dest_offset; 2312 } 2313 2314 2315 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 2316 int offset = offset_for_field(field_name, object, 2317 vmSymbols::string_signature()); 2318 oop string = object->obj_field(offset); 2319 if (string == nullptr) { 2320 return nullptr; 2321 } 2322 const char* ret = java_lang_String::as_utf8_string(string); 2323 return ret; 2324 } 2325 2326 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 2327 int offset = 2328 offset_for_field(field_name, object, vmSymbols::bool_signature()); 2329 bool ret = (object->bool_field(offset) == JNI_TRUE); 2330 return ret; 2331 } 2332 2333 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 2334 ResourceMark rm; 2335 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass)); 2336 const char* klass_name = klass->external_name(); 2337 2338 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 2339 2340 // one by one registration natives for exception catching 2341 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 2342 CHECK_JNI_EXCEPTION(env); 2343 for (int i = 0, n = method_count; i < n; ++i) { 2344 // Skip dummy entries 2345 if (method_array[i].fnPtr == nullptr) continue; 2346 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 2347 jthrowable throwable_obj = env->ExceptionOccurred(); 2348 if (throwable_obj != nullptr) { 2349 env->ExceptionClear(); 2350 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 2351 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 2352 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 2353 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s", 2354 klass_name, method_array[i].name, method_array[i].signature); 2355 } 2356 } else { 2357 // Registration failed unexpectedly. 2358 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered", 2359 klass_name, method_array[i].name, method_array[i].signature); 2360 env->UnregisterNatives(wbclass); 2361 break; 2362 } 2363 } 2364 } 2365 } 2366 2367 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 2368 // can't be in VM when we call JNI 2369 ThreadToNativeFromVM ttnfv(thread); 2370 const char* dir = env->GetStringUTFChars(compDirect, nullptr); 2371 CHECK_JNI_EXCEPTION_(env, 0); 2372 int ret; 2373 { 2374 ThreadInVMfromNative ttvfn(thread); // back to VM 2375 ret = DirectivesParser::parse_string(dir, tty); 2376 } 2377 env->ReleaseStringUTFChars(compDirect, dir); 2378 // -1 for error parsing directive. Return 0 as number of directives added. 2379 if (ret == -1) { 2380 ret = 0; 2381 } 2382 return (jint) ret; 2383 WB_END 2384 2385 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 2386 DirectivesStack::pop(count); 2387 WB_END 2388 2389 // Checks that the library libfile has the noexecstack bit set. 2390 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 2391 jboolean ret = false; 2392 #ifdef LINUX 2393 // Can't be in VM when we call JNI. 2394 ThreadToNativeFromVM ttnfv(thread); 2395 const char* lf = env->GetStringUTFChars(libfile, nullptr); 2396 CHECK_JNI_EXCEPTION_(env, 0); 2397 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 2398 env->ReleaseStringUTFChars(libfile, lf); 2399 #endif 2400 return ret; 2401 WB_END 2402 2403 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 2404 LINUX_ONLY(return OSContainer::is_containerized();) 2405 return false; 2406 WB_END 2407 2408 // Physical memory of the host machine (including containers) 2409 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o)) 2410 LINUX_ONLY(return os::Linux::physical_memory();) 2411 return os::physical_memory(); 2412 WB_END 2413 2414 // Physical swap of the host machine (including containers), Linux only. 2415 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o)) 2416 LINUX_ONLY(return (jlong)os::Linux::host_swap();) 2417 return -1; // Not used/implemented on other platforms 2418 WB_END 2419 2420 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env, 2421 jobject o, 2422 jstring proc_cgroups, 2423 jstring proc_self_cgroup, 2424 jstring proc_self_mountinfo)) 2425 jint ret = 0; 2426 #ifdef LINUX 2427 ThreadToNativeFromVM ttnfv(thread); 2428 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, nullptr); 2429 CHECK_JNI_EXCEPTION_(env, 0); 2430 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr); 2431 CHECK_JNI_EXCEPTION_(env, 0); 2432 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr); 2433 CHECK_JNI_EXCEPTION_(env, 0); 2434 u1 cg_type_flags = 0; 2435 // This sets cg_type_flags 2436 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags); 2437 ret = (jint)cg_type_flags; 2438 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups); 2439 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup); 2440 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo); 2441 #endif 2442 return ret; 2443 WB_END 2444 2445 // Available cpus of the host machine, Linux only. 2446 // Used in container testing. 2447 WB_ENTRY(jint, WB_HostCPUs(JNIEnv* env, jobject o)) 2448 LINUX_ONLY(return os::Linux::active_processor_count();) 2449 return -1; // Not used/implemented on other platforms 2450 WB_END 2451 2452 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 2453 os::print_os_info(tty); 2454 WB_END 2455 2456 // Elf decoder 2457 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 2458 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 2459 ElfFile::_do_not_cache_elf_section = true; 2460 #endif 2461 WB_END 2462 2463 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o)) 2464 return (jlong) ResolvedMethodTable::items_count(); 2465 WB_END 2466 2467 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o)) 2468 return (jint) ProtectionDomainCacheTable::removed_entries_count(); 2469 WB_END 2470 2471 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror)) 2472 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror)); 2473 // Return size in bytes. 2474 return k->size() * wordSize; 2475 WB_END 2476 2477 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java. 2478 // It explains how the thread's priority field is used for test state coordination. 2479 // 2480 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle)) 2481 oop target_oop = JNIHandles::resolve_non_null(target_handle); 2482 jlong tid = java_lang_Thread::thread_id(target_oop); 2483 JavaThread* target = java_lang_Thread::thread(target_oop); 2484 2485 // Grab a ThreadsListHandle to protect the target thread whilst terminating 2486 ThreadsListHandle tlh; 2487 2488 // Look up the target thread by tid to ensure it is present 2489 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid); 2490 if (t == nullptr) { 2491 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!"); 2492 } 2493 2494 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected"); 2495 // Allow target to terminate by boosting priority 2496 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1)); 2497 2498 // Now wait for the target to terminate 2499 while (!target->is_terminated()) { 2500 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint 2501 os::naked_short_sleep(0); 2502 } 2503 2504 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated"); 2505 2506 // Now release the GC inducing thread - we have to re-resolve the external oop that 2507 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now. 2508 oop original = JNIHandles::resolve_non_null(target_handle); 2509 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2)); 2510 2511 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:"); 2512 2513 // The Java code should be creating garbage and triggering GC, which would potentially move 2514 // the threadObj oop. If the exiting thread is properly protected then its threadObj should 2515 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to 2516 // kick in. 2517 for (int i = 0; i < 5; i++) { 2518 oop original = JNIHandles::resolve_non_null(target_handle); 2519 oop current = t->threadObj(); 2520 if (original != current) { 2521 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i); 2522 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!"); 2523 } else { 2524 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i); 2525 ThreadBlockInVM tbivm(thread); 2526 os::naked_short_sleep(50); 2527 } 2528 } 2529 WB_END 2530 2531 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map)) 2532 ResourceMark rm; // for verify 2533 stringStream st; 2534 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) { 2535 frame* current_frame = fst.current(); 2536 if (log) { 2537 current_frame->print_value_on(&st, nullptr); 2538 } 2539 current_frame->verify(fst.register_map()); 2540 } 2541 if (log) { 2542 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames"); 2543 tty->print_raw(st.freeze()); 2544 tty->print_cr("[WhiteBox::VerifyFrames] Done"); 2545 } 2546 WB_END 2547 2548 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb)) 2549 #if INCLUDE_JVMTI 2550 return JNI_TRUE; 2551 #else 2552 return JNI_FALSE; 2553 #endif 2554 WB_END 2555 2556 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time)) 2557 os::naked_short_sleep(time); 2558 WB_END 2559 2560 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o)) 2561 ThreadToNativeFromVM ttn(thread); 2562 jstring info_string = env->NewStringUTF(XSTR(LIBC)); 2563 CHECK_JNI_EXCEPTION_(env, nullptr); 2564 return info_string; 2565 WB_END 2566 2567 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb)) 2568 GCLocker::lock_critical(thread); 2569 WB_END 2570 2571 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb)) 2572 GCLocker::unlock_critical(thread); 2573 WB_END 2574 2575 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable)) 2576 if (!Continuations::enabled()) { 2577 tty->print_cr("WB error: must be Continuations::enabled()!"); 2578 return JNI_FALSE; 2579 } 2580 jboolean result = false; 2581 #if INCLUDE_JVMTI 2582 if (enable) { 2583 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti(); 2584 } else { 2585 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti(); 2586 } 2587 #endif 2588 return result; 2589 WB_END 2590 2591 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size)) 2592 void* const from = (void*)addr; 2593 void* const to = (void*)(addr + size); 2594 if (from > to) { 2595 os::pretouch_memory(from, to, os::vm_page_size()); 2596 } 2597 WB_END 2598 2599 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target)) 2600 ClassLoaderDataGraph::safepoint_and_clean_metaspaces(); 2601 WB_END 2602 2603 #define CC (char*) 2604 2605 static JNINativeMethod methods[] = { 2606 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 2607 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 2608 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 2609 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 2610 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 2611 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 2612 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 2613 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 2614 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 2615 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses }, 2616 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount }, 2617 {CC"parseCommandLine0", 2618 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;", 2619 (void*) &WB_ParseCommandLine 2620 }, 2621 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2622 (void*)&WB_AddToBootstrapClassLoaderSearch}, 2623 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2624 (void*)&WB_AddToSystemClassLoaderSearch}, 2625 {CC"getCompressedOopsMaxHeapSize", CC"()J", 2626 (void*)&WB_GetCompressedOopsMaxHeapSize}, 2627 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 2628 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 2629 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 2630 #if INCLUDE_CDS 2631 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName}, 2632 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName}, 2633 #endif 2634 #if INCLUDE_G1GC 2635 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 2636 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles}, 2637 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 2638 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 2639 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 2640 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 2641 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 2642 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 2643 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit}, 2644 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 2645 (void*)&WB_G1AuxiliaryMemoryUsage }, 2646 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount }, 2647 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds }, 2648 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 2649 #endif // INCLUDE_G1GC 2650 #if INCLUDE_PARALLELGC 2651 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 2652 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 2653 #endif 2654 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 2655 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 2656 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType}, 2657 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 2658 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 2659 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 2660 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 2661 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 2662 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 2663 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 2664 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena }, 2665 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena }, 2666 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc }, 2667 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 2668 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized}, 2669 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 2670 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 2671 (void*)&WB_DeoptimizeMethod }, 2672 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 2673 (void*)&WB_IsMethodCompiled }, 2674 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 2675 (void*)&WB_IsMethodCompilable}, 2676 {CC"isMethodQueuedForCompilation0", 2677 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 2678 {CC"isIntrinsicAvailable0", 2679 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2680 (void*)&WB_IsIntrinsicAvailable}, 2681 {CC"makeMethodNotCompilable0", 2682 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2683 {CC"testSetDontInlineMethod0", 2684 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2685 {CC"getMethodCompilationLevel0", 2686 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2687 {CC"getMethodDecompileCount0", 2688 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount}, 2689 {CC"getMethodTrapCount0", 2690 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2691 (void*)&WB_GetMethodTrapCount}, 2692 {CC"getDeoptCount0", 2693 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount}, 2694 {CC"getMethodEntryBci0", 2695 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2696 {CC"getCompileQueueSize", 2697 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2698 {CC"testSetForceInlineMethod0", 2699 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2700 {CC"enqueueMethodForCompilation0", 2701 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2702 {CC"enqueueInitializerForCompilation0", 2703 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2704 {CC"markMethodProfiled", 2705 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled}, 2706 {CC"clearMethodState0", 2707 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2708 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2709 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2710 {CC"matchesMethod", 2711 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2712 (void*)&WB_MatchesMethod}, 2713 {CC"matchesInline", 2714 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2715 (void*)&WB_MatchesInline}, 2716 {CC"shouldPrintAssembly", 2717 CC"(Ljava/lang/reflect/Executable;I)Z", 2718 (void*)&WB_ShouldPrintAssembly}, 2719 2720 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2721 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag}, 2722 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2723 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2724 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2725 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2726 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2727 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2728 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2729 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2730 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2731 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2732 (void*)&WB_SetStringVMFlag}, 2733 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2734 (void*)&WB_GetBooleanVMFlag}, 2735 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2736 (void*)&WB_GetIntVMFlag}, 2737 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2738 (void*)&WB_GetUintVMFlag}, 2739 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2740 (void*)&WB_GetIntxVMFlag}, 2741 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2742 (void*)&WB_GetUintxVMFlag}, 2743 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2744 (void*)&WB_GetUint64VMFlag}, 2745 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2746 (void*)&WB_GetSizeTVMFlag}, 2747 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2748 (void*)&WB_GetDoubleVMFlag}, 2749 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2750 (void*)&WB_GetStringVMFlag}, 2751 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2752 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2753 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2754 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2755 {CC"allocateMetaspace", 2756 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2757 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2758 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2759 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment }, 2760 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2761 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2762 (void*)&WB_GetNMethod }, 2763 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2764 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2765 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2766 {CC"getCompilationActivityMode", 2767 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2768 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2769 (void*)&WB_GetMethodData }, 2770 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2771 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2772 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2773 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2774 (void*)&WB_DefineModule }, 2775 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2776 (void*)&WB_AddModuleExports }, 2777 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2778 (void*)&WB_AddReadsModule }, 2779 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2780 (void*)&WB_AddModuleExportsToAllUnnamed }, 2781 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2782 (void*)&WB_AddModuleExportsToAll }, 2783 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors }, 2784 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2785 {CC"isAsanEnabled", CC"()Z", (void*)&WB_IsAsanEnabled }, 2786 {CC"isUbsanEnabled", CC"()Z", (void*)&WB_IsUbsanEnabled }, 2787 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2788 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint }, 2789 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2790 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 2791 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 2792 {CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 2793 {CC"remapInstructionOperandFromCPCache0", 2794 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 2795 {CC"encodeConstantPoolIndyIndex0", 2796 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 2797 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength}, 2798 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex}, 2799 {CC"getMethodBooleanOption", 2800 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2801 (void*)&WB_GetMethodBooleaneOption}, 2802 {CC"getMethodIntxOption", 2803 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2804 (void*)&WB_GetMethodIntxOption}, 2805 {CC"getMethodUintxOption", 2806 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2807 (void*)&WB_GetMethodUintxOption}, 2808 {CC"getMethodDoubleOption", 2809 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2810 (void*)&WB_GetMethodDoubleOption}, 2811 {CC"getMethodStringOption", 2812 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2813 (void*)&WB_GetMethodStringOption}, 2814 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;", 2815 (void*)&WB_GetDefaultArchivePath}, 2816 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion}, 2817 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion}, 2818 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled}, 2819 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString }, 2820 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2821 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped }, 2822 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass}, 2823 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2824 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded }, 2825 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded }, 2826 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded }, 2827 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded }, 2828 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC}, 2829 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive }, 2830 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed }, 2831 2832 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2833 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors }, 2834 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2835 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack }, 2836 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock}, 2837 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread }, 2838 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames }, 2839 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2840 (void*)&WB_AddCompilerDirective }, 2841 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2842 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported}, 2843 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler}, 2844 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected}, 2845 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically}, 2846 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints}, 2847 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl}, 2848 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl}, 2849 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle}, 2850 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z", 2851 (void*)&WB_ConcurrentGCRunTo}, 2852 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2853 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2854 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2855 {CC"validateCgroup", 2856 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I", 2857 (void*)&WB_ValidateCgroup }, 2858 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory }, 2859 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap }, 2860 {CC"hostCPUs", CC"()I", (void*)&WB_HostCPUs }, 2861 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2862 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 2863 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount }, 2864 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount }, 2865 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize}, 2866 2867 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext}, 2868 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext}, 2869 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext}, 2870 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext}, 2871 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext}, 2872 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext}, 2873 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext}, 2874 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena}, 2875 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena}, 2876 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena}, 2877 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize}, 2878 2879 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded}, 2880 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe}, 2881 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName}, 2882 2883 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical}, 2884 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical}, 2885 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode}, 2886 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory}, 2887 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces}, 2888 }; 2889 2890 2891 #undef CC 2892 2893 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2894 { 2895 if (WhiteBoxAPI) { 2896 // Make sure that wbclass is loaded by the null classloader 2897 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass))); 2898 Handle loader(THREAD, ik->class_loader()); 2899 if (loader.is_null()) { 2900 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2901 WhiteBox::set_used(); 2902 } 2903 } 2904 } 2905 JVM_END