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/classPrinter.hpp" 35 #include "classfile/javaClasses.inline.hpp" 36 #include "classfile/modules.hpp" 37 #include "classfile/protectionDomainCache.hpp" 38 #include "classfile/stringTable.hpp" 39 #include "classfile/symbolTable.hpp" 40 #include "classfile/systemDictionary.hpp" 41 #include "classfile/vmSymbols.hpp" 42 #include "code/codeCache.hpp" 43 #include "compiler/compilationPolicy.hpp" 44 #include "compiler/directivesParser.hpp" 45 #include "compiler/methodMatcher.hpp" 46 #include "gc/shared/concurrentGCBreakpoints.hpp" 47 #include "gc/shared/gcConfig.hpp" 48 #include "gc/shared/gcLocker.inline.hpp" 49 #include "gc/shared/genArguments.hpp" 50 #include "gc/shared/genCollectedHeap.hpp" 51 #include "jvmtifiles/jvmtiEnv.hpp" 52 #include "logging/log.hpp" 53 #include "memory/iterator.hpp" 54 #include "memory/metadataFactory.hpp" 55 #include "memory/metaspace/testHelpers.hpp" 56 #include "memory/metaspaceUtils.hpp" 57 #include "memory/oopFactory.hpp" 58 #include "memory/resourceArea.hpp" 59 #include "memory/universe.hpp" 60 #include "oops/array.hpp" 61 #include "oops/compressedOops.hpp" 62 #include "oops/constantPool.inline.hpp" 63 #include "oops/klass.inline.hpp" 64 #include "oops/method.inline.hpp" 65 #include "oops/objArrayKlass.hpp" 66 #include "oops/objArrayOop.inline.hpp" 67 #include "oops/oop.inline.hpp" 68 #include "oops/typeArrayOop.inline.hpp" 69 #include "prims/jvmtiEnvBase.hpp" 70 #include "prims/resolvedMethodTable.hpp" 71 #include "prims/wbtestmethods/parserTests.hpp" 72 #include "prims/whitebox.inline.hpp" 73 #include "runtime/arguments.hpp" 74 #include "runtime/atomic.hpp" 75 #include "runtime/deoptimization.hpp" 76 #include "runtime/fieldDescriptor.inline.hpp" 77 #include "runtime/flags/jvmFlag.hpp" 78 #include "runtime/flags/jvmFlagAccess.hpp" 79 #include "runtime/frame.inline.hpp" 80 #include "runtime/handles.inline.hpp" 81 #include "runtime/handshake.hpp" 82 #include "runtime/interfaceSupport.inline.hpp" 83 #include "runtime/javaCalls.hpp" 84 #include "runtime/javaThread.inline.hpp" 85 #include "runtime/jniHandles.inline.hpp" 86 #include "runtime/os.hpp" 87 #include "runtime/stackFrameStream.inline.hpp" 88 #include "runtime/synchronizer.hpp" 89 #include "runtime/threadSMR.hpp" 90 #include "runtime/vframe.hpp" 91 #include "runtime/vm_version.hpp" 92 #include "services/mallocSiteTable.hpp" 93 #include "services/memoryService.hpp" 94 #include "services/memTracker.hpp" 95 #include "utilities/align.hpp" 96 #include "utilities/checkedCast.hpp" 97 #include "utilities/debug.hpp" 98 #include "utilities/elfFile.hpp" 99 #include "utilities/exceptions.hpp" 100 #include "utilities/macros.hpp" 101 #include "utilities/nativeCallStack.hpp" 102 #include "utilities/ostream.hpp" 103 #if INCLUDE_G1GC 104 #include "gc/g1/g1Arguments.hpp" 105 #include "gc/g1/g1CollectedHeap.inline.hpp" 106 #include "gc/g1/g1ConcurrentMark.hpp" 107 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp" 108 #include "gc/g1/heapRegionManager.hpp" 109 #include "gc/g1/heapRegionRemSet.inline.hpp" 110 #endif // INCLUDE_G1GC 111 #if INCLUDE_PARALLELGC 112 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 113 #endif // INCLUDE_PARALLELGC 114 #if INCLUDE_ZGC 115 #include "gc/z/zAddress.inline.hpp" 116 #endif // INCLUDE_ZGC 117 #if INCLUDE_JVMCI 118 #include "jvmci/jvmciEnv.hpp" 119 #include "jvmci/jvmciRuntime.hpp" 120 #endif 121 #ifdef LINUX 122 #include "os_linux.hpp" 123 #include "osContainer_linux.hpp" 124 #include "cgroupSubsystem_linux.hpp" 125 #endif 126 127 #define CHECK_JNI_EXCEPTION_(env, value) \ 128 do { \ 129 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 130 THREAD->clear_pending_jni_exception_check(); \ 131 if (HAS_PENDING_EXCEPTION) { \ 132 return(value); \ 133 } \ 134 } while (0) 135 136 #define CHECK_JNI_EXCEPTION(env) \ 137 do { \ 138 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 139 THREAD->clear_pending_jni_exception_check(); \ 140 if (HAS_PENDING_EXCEPTION) { \ 141 return; \ 142 } \ 143 } while (0) 144 145 bool WhiteBox::_used = false; 146 volatile bool WhiteBox::compilation_locked = false; 147 148 class VM_WhiteBoxOperation : public VM_Operation { 149 public: 150 VM_WhiteBoxOperation() { } 151 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 152 bool allow_nested_vm_operations() const { return true; } 153 }; 154 155 156 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 157 return (jlong)(void*)JNIHandles::resolve(obj); 158 WB_END 159 160 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 161 return heapOopSize; 162 WB_END 163 164 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 165 return (jint)os::vm_page_size(); 166 WB_END 167 168 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 169 return os::vm_allocation_granularity(); 170 WB_END 171 172 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 173 return os::large_page_size(); 174 WB_END 175 176 class WBIsKlassAliveClosure : public LockedClassesDo { 177 Symbol* _name; 178 int _count; 179 public: 180 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {} 181 182 void do_klass(Klass* k) { 183 Symbol* ksym = k->name(); 184 if (ksym->fast_compare(_name) == 0) { 185 _count++; 186 } else if (k->is_instance_klass()) { 187 // Need special handling for hidden classes because the JVM 188 // appends "+<hex-address>" to hidden class names. 189 InstanceKlass *ik = InstanceKlass::cast(k); 190 if (ik->is_hidden()) { 191 ResourceMark rm; 192 char* k_name = ksym->as_C_string(); 193 // Find the first '+' char and truncate the string at that point. 194 // NOTE: This will not work correctly if the original hidden class 195 // name contains a '+'. 196 char* plus_char = strchr(k_name, '+'); 197 if (plus_char != nullptr) { 198 *plus_char = 0; 199 char* c_name = _name->as_C_string(); 200 if (strcmp(c_name, k_name) == 0) { 201 _count++; 202 } 203 } 204 } 205 } 206 } 207 208 int count() const { 209 return _count; 210 } 211 }; 212 213 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name)) 214 oop h_name = JNIHandles::resolve(name); 215 if (h_name == nullptr) { 216 return 0; 217 } 218 Symbol* sym = java_lang_String::as_symbol(h_name); 219 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 220 221 WBIsKlassAliveClosure closure(sym); 222 ClassLoaderDataGraph::classes_do(&closure); 223 224 // Return the count of alive classes with this name. 225 return closure.count(); 226 WB_END 227 228 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name)) 229 oop h_name = JNIHandles::resolve(name); 230 if (h_name == nullptr) { 231 return 0; 232 } 233 Symbol* sym = java_lang_String::as_symbol(h_name); 234 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 235 return (jint)sym->refcount(); 236 WB_END 237 238 239 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 240 #if INCLUDE_JVMTI 241 ResourceMark rm; 242 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 243 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 244 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 245 assert(err == JVMTI_ERROR_NONE, "must not fail"); 246 #endif 247 } 248 WB_END 249 250 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 251 #if INCLUDE_JVMTI 252 ResourceMark rm; 253 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 254 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 255 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 256 assert(err == JVMTI_ERROR_NONE, "must not fail"); 257 #endif 258 } 259 WB_END 260 261 262 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 263 return (jlong)Arguments::max_heap_for_compressed_oops(); 264 } 265 WB_END 266 267 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 268 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " " 269 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 270 MinHeapSize, 271 InitialHeapSize, 272 MaxHeapSize, 273 SpaceAlignment, 274 HeapAlignment); 275 } 276 WB_END 277 278 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 279 size_t granularity = os::vm_allocation_granularity(); 280 ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size()); 281 VirtualSpace vs; 282 vs.initialize(rhs, 50 * granularity); 283 284 // Check if constraints are complied 285 if (!( UseCompressedOops && rhs.base() != nullptr && 286 CompressedOops::base() != nullptr && 287 CompressedOops::use_implicit_null_checks() )) { 288 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 289 "\tUseCompressedOops is %d\n" 290 "\trhs.base() is " PTR_FORMAT "\n" 291 "\tCompressedOops::base() is " PTR_FORMAT "\n" 292 "\tCompressedOops::use_implicit_null_checks() is %d", 293 UseCompressedOops, 294 p2i(rhs.base()), 295 p2i(CompressedOops::base()), 296 CompressedOops::use_implicit_null_checks()); 297 return; 298 } 299 tty->print_cr("Reading from no access area... "); 300 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 301 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 302 WB_END 303 304 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 305 size_t magnitude, size_t iterations) { 306 size_t granularity = os::vm_allocation_granularity(); 307 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size()); 308 VirtualSpace vs; 309 if (!vs.initialize(rhs, 0)) { 310 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 311 return 3; 312 } 313 314 int seed = os::random(); 315 tty->print_cr("Random seed is %d", seed); 316 317 for (size_t i = 0; i < iterations; i++) { 318 319 // Whether we will shrink or grow 320 bool shrink = os::random() % 2L == 0; 321 322 // Get random delta to resize virtual space 323 size_t delta = (size_t)os::random() % magnitude; 324 325 // If we are about to shrink virtual space below zero, then expand instead 326 if (shrink && vs.committed_size() < delta) { 327 shrink = false; 328 } 329 330 // Resizing by delta 331 if (shrink) { 332 vs.shrink_by(delta); 333 } else { 334 // If expanding fails expand_by will silently return false 335 vs.expand_by(delta, true); 336 } 337 } 338 return 0; 339 } 340 341 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 342 jlong reserved_space_size, jlong magnitude, jlong iterations)) 343 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 344 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 345 iterations); 346 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 347 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 348 return 1; 349 } 350 351 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 352 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 353 if (sizeof(size_t) < sizeof(jlong)) { 354 jlong size_t_max_value = (jlong)SIZE_MAX; 355 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 356 || iterations > size_t_max_value) { 357 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 358 return 2; 359 } 360 } 361 362 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 363 (size_t) magnitude, (size_t) iterations); 364 WB_END 365 366 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name)) 367 return GCConfig::is_gc_supported((CollectedHeap::Name)name); 368 WB_END 369 370 WB_ENTRY(jboolean, WB_HasLibgraal(JNIEnv* env, jobject o)) 371 #if INCLUDE_JVMCI 372 return JVMCI::shared_library_exists(); 373 #endif 374 return false; 375 WB_END 376 377 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name)) 378 #if INCLUDE_JVMCI 379 if (EnableJVMCI) { 380 // Enter the JVMCI env that will be used by the CompileBroker. 381 JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__); 382 return jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name); 383 } 384 #endif 385 return false; 386 WB_END 387 388 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name)) 389 return GCConfig::is_gc_selected((CollectedHeap::Name)name); 390 WB_END 391 392 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o)) 393 return GCConfig::is_gc_selected_ergonomically(); 394 WB_END 395 396 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 397 oop p = JNIHandles::resolve(obj); 398 #if INCLUDE_G1GC 399 if (UseG1GC) { 400 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 401 const HeapRegion* hr = g1h->heap_region_containing(p); 402 return !(hr->is_young()); 403 } 404 #endif 405 #if INCLUDE_PARALLELGC 406 if (UseParallelGC) { 407 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 408 return !psh->is_in_young(p); 409 } 410 #endif 411 #if INCLUDE_ZGC 412 if (UseZGC) { 413 if (ZGenerational) { 414 return ZHeap::heap()->is_old(to_zaddress(p)); 415 } else { 416 return Universe::heap()->is_in(p); 417 } 418 } 419 #endif 420 #if INCLUDE_SHENANDOAHGC 421 if (UseShenandoahGC) { 422 return Universe::heap()->is_in(p); 423 } 424 #endif 425 GenCollectedHeap* gch = GenCollectedHeap::heap(); 426 return !gch->is_in_young(p); 427 WB_END 428 429 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 430 oop p = JNIHandles::resolve(obj); 431 return p->size() * HeapWordSize; 432 WB_END 433 434 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 435 return (jlong)SpaceAlignment; 436 WB_END 437 438 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 439 return (jlong)HeapAlignment; 440 WB_END 441 442 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o)) 443 return Universe::heap()->supports_concurrent_gc_breakpoints(); 444 WB_END 445 446 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o)) 447 ConcurrentGCBreakpoints::acquire_control(); 448 WB_END 449 450 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o)) 451 ConcurrentGCBreakpoints::release_control(); 452 WB_END 453 454 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o)) 455 ConcurrentGCBreakpoints::run_to_idle(); 456 WB_END 457 458 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at)) 459 Handle h_name(THREAD, JNIHandles::resolve(at)); 460 ResourceMark rm; 461 const char* c_name = java_lang_String::as_utf8_string(h_name()); 462 return ConcurrentGCBreakpoints::run_to(c_name); 463 WB_END 464 465 #if INCLUDE_G1GC 466 467 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 468 if (UseG1GC) { 469 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 470 oop result = JNIHandles::resolve(obj); 471 const HeapRegion* hr = g1h->heap_region_containing(result); 472 return hr->is_humongous(); 473 } 474 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 475 WB_END 476 477 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(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_humongous(); 482 } 483 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 484 WB_END 485 486 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 487 if (UseG1GC) { 488 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 489 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 490 return hr->is_free(); 491 } 492 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 493 WB_END 494 495 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 496 if (UseG1GC) { 497 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 498 size_t nr = g1h->max_regions(); 499 return (jlong)nr; 500 } 501 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 502 WB_END 503 504 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 505 if (UseG1GC) { 506 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 507 size_t nr = g1h->num_free_regions(); 508 return (jlong)nr; 509 } 510 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 511 WB_END 512 513 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 514 if (UseG1GC) { 515 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 516 return g1h->concurrent_mark()->cm_thread()->in_progress(); 517 } 518 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 519 WB_END 520 521 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o)) 522 if (UseG1GC) { 523 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 524 G1ConcurrentMark* cm = g1h->concurrent_mark(); 525 return cm->completed_mark_cycles(); 526 } 527 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled"); 528 WB_END 529 530 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 531 if (UseG1GC) { 532 return (jint)HeapRegion::GrainBytes; 533 } 534 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 535 WB_END 536 537 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o)) 538 if (UseG1GC) { 539 return G1CollectedHeap::heap()->has_uncommittable_regions(); 540 } 541 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled"); 542 WB_END 543 544 #endif // INCLUDE_G1GC 545 546 #if INCLUDE_PARALLELGC 547 548 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 549 if (UseParallelGC) { 550 return GenAlignment; 551 } 552 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 553 WB_END 554 555 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 556 if (UseParallelGC) { 557 return GenAlignment; 558 } 559 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 560 WB_END 561 562 #endif // INCLUDE_PARALLELGC 563 564 #if INCLUDE_G1GC 565 566 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 567 if (UseG1GC) { 568 ResourceMark rm(THREAD); 569 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 570 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 571 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 572 return JNIHandles::make_local(THREAD, h()); 573 } 574 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 575 WB_END 576 577 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o)) 578 if (UseG1GC) { 579 G1NUMA* numa = G1NUMA::numa(); 580 return (jint)numa->num_active_nodes(); 581 } 582 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled"); 583 WB_END 584 585 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o)) 586 if (UseG1GC) { 587 G1NUMA* numa = G1NUMA::numa(); 588 int num_node_ids = checked_cast<int>(numa->num_active_nodes()); 589 const uint* node_ids = numa->node_ids(); 590 591 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL); 592 for (int i = 0; i < num_node_ids; i++) { 593 result->int_at_put(i, checked_cast<jint>(node_ids[i])); 594 } 595 return (jintArray) JNIHandles::make_local(THREAD, result); 596 } 597 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled"); 598 WB_END 599 600 class OldRegionsLivenessClosure: public HeapRegionClosure { 601 602 private: 603 const int _liveness; 604 size_t _total_count; 605 size_t _total_memory; 606 size_t _total_memory_to_free; 607 608 public: 609 OldRegionsLivenessClosure(int liveness) : 610 _liveness(liveness), 611 _total_count(0), 612 _total_memory(0), 613 _total_memory_to_free(0) { } 614 615 size_t total_count() { return _total_count; } 616 size_t total_memory() { return _total_memory; } 617 size_t total_memory_to_free() { return _total_memory_to_free; } 618 619 bool do_heap_region(HeapRegion* r) { 620 if (r->is_old()) { 621 size_t live = r->live_bytes(); 622 size_t size = r->used(); 623 size_t reg_size = HeapRegion::GrainBytes; 624 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 625 _total_memory += size; 626 ++_total_count; 627 if (size == reg_size) { 628 // We don't include non-full regions since they are unlikely included in mixed gc 629 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 630 _total_memory_to_free += size - live; 631 } 632 } 633 } 634 return false; 635 } 636 }; 637 638 639 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 640 if (!UseG1GC) { 641 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 642 } 643 if (liveness < 0) { 644 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 645 } 646 647 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 648 OldRegionsLivenessClosure rli(liveness); 649 g1h->heap_region_iterate(&rli); 650 651 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 652 result->long_at_put(0, rli.total_count()); 653 result->long_at_put(1, rli.total_memory()); 654 result->long_at_put(2, rli.total_memory_to_free()); 655 return (jlongArray) JNIHandles::make_local(THREAD, result); 656 WB_END 657 658 #endif // INCLUDE_G1GC 659 660 // Alloc memory using the test memory type so that we can use that to see if 661 // NMT picks it up correctly 662 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 663 jlong addr = 0; 664 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 665 return addr; 666 WB_END 667 668 // Alloc memory with pseudo call stack. The test can create pseudo malloc 669 // allocation site to stress the malloc tracking. 670 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 671 address pc = (address)(size_t)pseudo_stack; 672 NativeCallStack stack(&pc, 1); 673 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 674 WB_END 675 676 // Alloc memory with pseudo call stack and specific memory type. 677 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type)) 678 address pc = (address)(size_t)pseudo_stack; 679 NativeCallStack stack(&pc, 1); 680 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack); 681 WB_END 682 683 // Free the memory allocated by NMTAllocTest 684 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 685 os::free((void*)(uintptr_t)mem); 686 WB_END 687 688 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 689 jlong addr = 0; 690 691 addr = (jlong)(uintptr_t)os::reserve_memory(size); 692 MemTracker::record_virtual_memory_type((address)addr, mtTest); 693 694 return addr; 695 WB_END 696 697 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size)) 698 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size); 699 MemTracker::record_virtual_memory_type((address)addr, mtTest); 700 701 return addr; 702 WB_END 703 704 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 705 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 706 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 707 WB_END 708 709 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 710 os::uncommit_memory((char *)(uintptr_t)addr, size); 711 WB_END 712 713 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 714 os::release_memory((char *)(uintptr_t)addr, size); 715 WB_END 716 717 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 718 int hash_size = MallocSiteTable::hash_buckets(); 719 assert(hash_size > 0, "NMT hash_size should be > 0"); 720 return (jint)hash_size; 721 WB_END 722 723 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size)) 724 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size)); 725 return (jlong)arena; 726 WB_END 727 728 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena)) 729 Arena* a = (Arena*)arena; 730 delete a; 731 WB_END 732 733 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size)) 734 Arena* a = (Arena*)arena; 735 a->Amalloc(size_t(size)); 736 WB_END 737 738 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 739 assert(method != nullptr, "method should not be null"); 740 ThreadToNativeFromVM ttn(thread); 741 return env->FromReflectedMethod(method); 742 } 743 744 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 745 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 746 private: 747 int _result; 748 const bool _make_not_entrant; 749 public: 750 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 751 _result(0), _make_not_entrant(make_not_entrant) { } 752 int result() const { return _result; } 753 754 void doit() { 755 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 756 if (t->has_last_Java_frame()) { 757 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) { 758 frame* f = fst.current(); 759 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 760 Deoptimization::deoptimize(t, *f); 761 if (_make_not_entrant) { 762 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 763 assert(cm != nullptr, "sanity check"); 764 cm->make_not_entrant(); 765 } 766 ++_result; 767 } 768 } 769 } 770 } 771 } 772 }; 773 774 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 775 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 776 VMThread::execute(&op); 777 return op.result(); 778 WB_END 779 780 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth)) 781 bool result = false; 782 if (thread->has_last_Java_frame()) { 783 RegisterMap reg_map(thread, 784 RegisterMap::UpdateMap::include, 785 RegisterMap::ProcessFrames::include, 786 RegisterMap::WalkContinuation::skip); 787 javaVFrame *jvf = thread->last_java_vframe(®_map); 788 for (jint d = 0; d < depth && jvf != nullptr; d++) { 789 jvf = jvf->java_sender(); 790 } 791 result = jvf != nullptr && jvf->fr().is_deoptimized_frame(); 792 } 793 return result; 794 WB_END 795 796 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 797 DeoptimizationScope deopt_scope; 798 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope); 799 deopt_scope.deoptimize_marked(); 800 WB_END 801 802 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 803 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 804 int result = 0; 805 CHECK_JNI_EXCEPTION_(env, result); 806 807 DeoptimizationScope deopt_scope; 808 { 809 MutexLocker mu(Compile_lock); 810 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 811 if (is_osr) { 812 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh()); 813 } else { 814 MutexLocker ml(CompiledMethod_lock, Mutex::_no_safepoint_check_flag); 815 if (mh->code() != nullptr) { 816 deopt_scope.mark(mh->code()); 817 ++result; 818 } 819 } 820 CodeCache::mark_for_deoptimization(&deopt_scope, mh()); 821 } 822 823 deopt_scope.deoptimize_marked(); 824 825 return result; 826 WB_END 827 828 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 829 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 830 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 831 MutexLocker mu(Compile_lock); 832 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 833 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 834 if (code == nullptr) { 835 return JNI_FALSE; 836 } 837 return !code->is_marked_for_deoptimization(); 838 WB_END 839 840 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) { 841 if (comp == nullptr) { 842 return true; 843 } 844 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 845 bool exclude = directive->ExcludeOption; 846 DirectivesStack::release(directive); 847 return exclude; 848 } 849 850 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) { 851 if (is_osr) { 852 return CompilationPolicy::can_be_osr_compiled(mh, level); 853 } else { 854 return CompilationPolicy::can_be_compiled(mh, level); 855 } 856 } 857 858 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 859 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) { 860 return false; 861 } 862 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 863 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 864 MutexLocker mu(Compile_lock); 865 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 866 867 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by 868 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive 869 // to exclude a compilation of 'method'. 870 if (comp_level == CompLevel_any) { 871 // Both compilers could have ExcludeOption set. Check all combinations. 872 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh); 873 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh); 874 if (excluded_c1 && excluded_c2) { 875 // Compilation of 'method' excluded by both compilers. 876 return false; 877 } 878 879 if (excluded_c1) { 880 // C1 only has ExcludeOption set: Check if compilable with C2. 881 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization); 882 } else if (excluded_c2) { 883 // C2 only has ExcludeOption set: Check if compilable with C1. 884 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple); 885 } 886 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) { 887 // Compilation of 'method' excluded by compiler used for 'comp_level'. 888 return false; 889 } 890 891 return can_be_compiled_at_level(mh, is_osr, (int)comp_level); 892 WB_END 893 894 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 895 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 896 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 897 MutexLocker mu(Compile_lock); 898 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 899 return mh->queued_for_compilation(); 900 WB_END 901 902 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 903 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) { 904 return false; // Intrinsic is not available on a non-existent compilation level. 905 } 906 jmethodID method_id, compilation_context_id; 907 method_id = reflected_method_to_jmid(thread, env, method); 908 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 909 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 910 911 DirectiveSet* directive; 912 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 913 assert(comp != nullptr, "compiler not available"); 914 if (compilation_context != nullptr) { 915 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 916 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 917 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 918 directive = DirectivesStack::getMatchingDirective(cch, comp); 919 } else { 920 // Calling with null matches default directive 921 directive = DirectivesStack::getDefaultDirective(comp); 922 } 923 bool result = comp->is_intrinsic_available(mh, directive); 924 DirectivesStack::release(directive); 925 return result; 926 WB_END 927 928 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 929 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 930 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 931 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 932 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 933 return (code != nullptr ? code->comp_level() : CompLevel_none); 934 WB_END 935 936 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 937 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 938 CHECK_JNI_EXCEPTION(env); 939 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 940 if (is_osr) { 941 mh->set_not_osr_compilable("WhiteBox", comp_level); 942 } else { 943 mh->set_not_compilable("WhiteBox", comp_level); 944 } 945 WB_END 946 947 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method)) 948 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 949 CHECK_JNI_EXCEPTION_(env, 0); 950 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 951 uint cnt = 0; 952 MethodData* mdo = mh->method_data(); 953 if (mdo != nullptr) { 954 cnt = mdo->decompile_count(); 955 } 956 return cnt; 957 WB_END 958 959 // Get the trap count of a method for a specific reason. If the trap count for 960 // that reason did overflow, this includes the overflow trap count of the method. 961 // If 'reason' is null, the sum of the traps for all reasons will be returned. 962 // This number includes the overflow trap count if the trap count for any reason 963 // did overflow. 964 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj)) 965 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 966 CHECK_JNI_EXCEPTION_(env, 0); 967 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 968 uint cnt = 0; 969 MethodData* mdo = mh->method_data(); 970 if (mdo != nullptr) { 971 ResourceMark rm(THREAD); 972 char* reason_str = (reason_obj == nullptr) ? 973 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj)); 974 bool overflow = false; 975 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) { 976 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) { 977 cnt = mdo->trap_count(reason); 978 // Count in the overflow trap count on overflow 979 if (cnt == (uint)-1) { 980 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count(); 981 } 982 break; 983 } else if (reason_str == nullptr) { 984 uint c = mdo->trap_count(reason); 985 if (c == (uint)-1) { 986 c = mdo->trap_count_limit(); 987 if (!overflow) { 988 // Count overflow trap count just once 989 overflow = true; 990 c += mdo->overflow_trap_count(); 991 } 992 } 993 cnt += c; 994 } 995 } 996 } 997 return cnt; 998 WB_END 999 1000 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj)) 1001 if (reason_obj == nullptr && action_obj == nullptr) { 1002 return Deoptimization::total_deoptimization_count(); 1003 } 1004 ResourceMark rm(THREAD); 1005 const char *reason_str = (reason_obj == nullptr) ? 1006 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj)); 1007 const char *action_str = (action_obj == nullptr) ? 1008 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj)); 1009 1010 return Deoptimization::deoptimization_count(reason_str, action_str); 1011 WB_END 1012 1013 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 1014 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1015 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 1016 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1017 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 1018 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 1019 WB_END 1020 1021 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1022 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1023 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1024 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1025 bool result = mh->dont_inline(); 1026 mh->set_dont_inline(value == JNI_TRUE); 1027 return result; 1028 WB_END 1029 1030 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 1031 if (comp_level == CompLevel_any) { 1032 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 1033 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 1034 } else { 1035 return CompileBroker::queue_size(comp_level); 1036 } 1037 WB_END 1038 1039 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1040 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1041 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1042 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1043 bool result = mh->force_inline(); 1044 mh->set_force_inline(value == JNI_TRUE); 1045 return result; 1046 WB_END 1047 1048 #ifdef LINUX 1049 bool WhiteBox::validate_cgroup(const char* proc_cgroups, 1050 const char* proc_self_cgroup, 1051 const char* proc_self_mountinfo, 1052 u1* cg_flags) { 1053 CgroupInfo cg_infos[CG_INFO_LENGTH]; 1054 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups, 1055 proc_self_cgroup, 1056 proc_self_mountinfo, cg_flags); 1057 } 1058 #endif 1059 1060 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) { 1061 // Screen for unavailable/bad comp level or null method 1062 AbstractCompiler* comp = CompileBroker::compiler(comp_level); 1063 if (method == nullptr) { 1064 tty->print_cr("WB error: request to compile null method"); 1065 return false; 1066 } 1067 if (comp_level > CompilationPolicy::highest_compile_level()) { 1068 tty->print_cr("WB error: invalid compilation level %d", comp_level); 1069 return false; 1070 } 1071 if (comp == nullptr) { 1072 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level); 1073 return false; 1074 } 1075 1076 // Check if compilation is blocking 1077 methodHandle mh(THREAD, method); 1078 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 1079 bool is_blocking = !directive->BackgroundCompilationOption; 1080 DirectivesStack::release(directive); 1081 1082 // Compile method and check result 1083 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false); 1084 MutexLocker mu(THREAD, Compile_lock); 1085 bool is_queued = mh->queued_for_compilation(); 1086 if ((!is_blocking && is_queued) || nm != nullptr) { 1087 return true; 1088 } 1089 // Check code again because compilation may be finished before Compile_lock is acquired. 1090 if (bci == InvocationEntryBci) { 1091 CompiledMethod* code = mh->code(); 1092 if (code != nullptr && code->as_nmethod_or_null() != nullptr) { 1093 return true; 1094 } 1095 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) { 1096 return true; 1097 } 1098 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level); 1099 mh->print_short_name(tty); 1100 tty->cr(); 1101 if (is_blocking && is_queued) { 1102 tty->print_cr("WB error: blocking compilation is still in queue!"); 1103 } 1104 return false; 1105 } 1106 1107 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 1108 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1109 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1110 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 1111 WB_END 1112 1113 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 1114 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1115 Method* clinit = ik->class_initializer(); 1116 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) { 1117 return false; 1118 } 1119 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD); 1120 WB_END 1121 1122 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 1123 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1124 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1125 1126 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1127 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 1128 bool result = directive->PrintAssemblyOption; 1129 DirectivesStack::release(directive); 1130 1131 return result; 1132 WB_END 1133 1134 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1135 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1136 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1137 1138 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1139 1140 ResourceMark rm(THREAD); 1141 const char* error_msg = nullptr; 1142 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1143 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 1144 1145 if (m == nullptr) { 1146 assert(error_msg != nullptr, "Always have an error message"); 1147 tty->print_cr("Got error: %s", error_msg); 1148 return -1; // Pattern failed 1149 } 1150 1151 // Pattern works - now check if it matches 1152 int result; 1153 if (m->match(mh, InlineMatcher::force_inline)) { 1154 result = 2; // Force inline match 1155 } else if (m->match(mh, InlineMatcher::dont_inline)) { 1156 result = 1; // Dont inline match 1157 } else { 1158 result = 0; // No match 1159 } 1160 delete m; 1161 return result; 1162 WB_END 1163 1164 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1165 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1166 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1167 1168 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1169 1170 ResourceMark rm; 1171 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1172 1173 const char* error_msg = nullptr; 1174 1175 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false); 1176 if (m == nullptr) { 1177 assert(error_msg != nullptr, "Must have error_msg"); 1178 tty->print_cr("Got error: %s", error_msg); 1179 return -1; 1180 } 1181 1182 // Pattern works - now check if it matches 1183 int result = m->matches(mh); 1184 delete m; 1185 assert(result == 0 || result == 1, "Result out of range"); 1186 return result; 1187 WB_END 1188 1189 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method)) 1190 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1191 CHECK_JNI_EXCEPTION(env); 1192 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1193 1194 MethodData* mdo = mh->method_data(); 1195 if (mdo == nullptr) { 1196 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR); 1197 mdo = mh->method_data(); 1198 } 1199 mdo->init(); 1200 InvocationCounter* icnt = mdo->invocation_counter(); 1201 InvocationCounter* bcnt = mdo->backedge_counter(); 1202 // set i-counter according to CompilationPolicy::is_method_profiled 1203 icnt->set(Tier4MinInvocationThreshold); 1204 bcnt->set(Tier4CompileThreshold); 1205 WB_END 1206 1207 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 1208 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1209 CHECK_JNI_EXCEPTION(env); 1210 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1211 MutexLocker mu(THREAD, Compile_lock); 1212 MethodData* mdo = mh->method_data(); 1213 MethodCounters* mcs = mh->method_counters(); 1214 1215 if (mdo != nullptr) { 1216 mdo->init(); 1217 ResourceMark rm(THREAD); 1218 int arg_count = mdo->method()->size_of_parameters(); 1219 for (int i = 0; i < arg_count; i++) { 1220 mdo->set_arg_modified(i, 0); 1221 } 1222 MutexLocker mu(THREAD, mdo->extra_data_lock()); 1223 mdo->clean_method_data(/*always_clean*/true); 1224 } 1225 1226 mh->clear_is_not_c1_compilable(); 1227 mh->clear_is_not_c2_compilable(); 1228 mh->clear_is_not_c2_osr_compilable(); 1229 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 1230 if (mcs != nullptr) { 1231 mcs->clear_counters(); 1232 } 1233 WB_END 1234 1235 template <typename T, int type_enum> 1236 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) { 1237 if (name == nullptr) { 1238 return false; 1239 } 1240 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1241 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1242 CHECK_JNI_EXCEPTION_(env, false); 1243 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name); 1244 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value); 1245 env->ReleaseStringUTFChars(name, flag_name); 1246 return (result == JVMFlag::SUCCESS); 1247 } 1248 1249 template <typename T, int type_enum> 1250 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) { 1251 if (name == nullptr) { 1252 return false; 1253 } 1254 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1255 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1256 CHECK_JNI_EXCEPTION_(env, false); 1257 JVMFlag* flag = JVMFlag::find_flag(flag_name); 1258 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL); 1259 env->ReleaseStringUTFChars(name, flag_name); 1260 return (result == JVMFlag::SUCCESS); 1261 } 1262 1263 template <typename T> 1264 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1265 ResourceMark rm(thread); 1266 jclass clazz = env->FindClass(name->as_C_string()); 1267 CHECK_JNI_EXCEPTION_(env, nullptr); 1268 jmethodID methodID = env->GetStaticMethodID(clazz, 1269 vmSymbols::valueOf_name()->as_C_string(), 1270 sig->as_C_string()); 1271 CHECK_JNI_EXCEPTION_(env, nullptr); 1272 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1273 CHECK_JNI_EXCEPTION_(env, nullptr); 1274 return result; 1275 } 1276 1277 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1278 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1279 } 1280 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1281 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1282 } 1283 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1284 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1285 } 1286 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1287 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1288 }*/ 1289 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1290 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1291 } 1292 1293 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1294 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1295 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1296 CHECK_JNI_EXCEPTION_(env, nullptr); 1297 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name); 1298 env->ReleaseStringUTFChars(name, flag_name); 1299 return result; 1300 } 1301 1302 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1303 const JVMFlag* flag = getVMFlag(thread, env, name); 1304 return (flag != nullptr) && flag->is_constant_in_binary(); 1305 WB_END 1306 1307 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name)) 1308 const JVMFlag* flag = getVMFlag(thread, env, name); 1309 return (flag != nullptr) && flag->is_default(); 1310 WB_END 1311 1312 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1313 const JVMFlag* flag = getVMFlag(thread, env, name); 1314 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker()); 1315 WB_END 1316 1317 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1318 bool result; 1319 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) { 1320 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1321 return booleanBox(thread, env, result); 1322 } 1323 return nullptr; 1324 WB_END 1325 1326 template <typename T, int type_enum> 1327 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) { 1328 T result; 1329 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) { 1330 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1331 return longBox(thread, env, result); 1332 } 1333 return nullptr; 1334 } 1335 1336 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1337 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name); 1338 WB_END 1339 1340 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1341 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name); 1342 WB_END 1343 1344 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1345 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name); 1346 WB_END 1347 1348 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1349 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name); 1350 WB_END 1351 1352 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1353 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name); 1354 WB_END 1355 1356 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1357 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name); 1358 WB_END 1359 1360 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1361 double result; 1362 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) { 1363 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1364 return doubleBox(thread, env, result); 1365 } 1366 return nullptr; 1367 WB_END 1368 1369 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1370 ccstr ccstrResult; 1371 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) { 1372 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1373 jstring result = env->NewStringUTF(ccstrResult); 1374 CHECK_JNI_EXCEPTION_(env, nullptr); 1375 return result; 1376 } 1377 return nullptr; 1378 WB_END 1379 1380 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1381 bool result = value == JNI_TRUE ? true : false; 1382 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result); 1383 WB_END 1384 1385 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1386 int result = checked_cast<int>(value); 1387 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result); 1388 WB_END 1389 1390 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1391 uint result = checked_cast<uint>(value); 1392 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result); 1393 WB_END 1394 1395 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1396 intx result = value; 1397 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result); 1398 WB_END 1399 1400 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1401 uintx result = value; 1402 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result); 1403 WB_END 1404 1405 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1406 uint64_t result = value; 1407 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result); 1408 WB_END 1409 1410 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1411 size_t result = value; 1412 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result); 1413 WB_END 1414 1415 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1416 double result = value; 1417 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result); 1418 WB_END 1419 1420 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1421 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1422 const char* ccstrValue; 1423 if (value == nullptr) { 1424 ccstrValue = nullptr; 1425 } 1426 else { 1427 ccstrValue = env->GetStringUTFChars(value, nullptr); 1428 CHECK_JNI_EXCEPTION(env); 1429 } 1430 { 1431 ccstr param = ccstrValue; 1432 ThreadInVMfromNative ttvfn(thread); // back to VM 1433 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) { 1434 assert(param == nullptr, "old value is freed automatically and not returned"); 1435 } 1436 } 1437 if (value != nullptr) { 1438 env->ReleaseStringUTFChars(value, ccstrValue); 1439 } 1440 WB_END 1441 1442 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1443 WhiteBox::compilation_locked = true; 1444 WB_END 1445 1446 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1447 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1448 WhiteBox::compilation_locked = false; 1449 mo.notify_all(); 1450 WB_END 1451 1452 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1453 ResourceMark rm(THREAD); 1454 int len; 1455 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1456 return (StringTable::lookup(name, len) != nullptr); 1457 WB_END 1458 1459 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1460 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1461 Universe::heap()->collect(GCCause::_wb_full_gc); 1462 #if INCLUDE_G1GC || INCLUDE_SERIALGC 1463 if (UseG1GC || UseSerialGC) { 1464 // Needs to be cleared explicitly for G1 and Serial GC. 1465 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1466 } 1467 #endif // INCLUDE_G1GC || INCLUDE_SERIALGC 1468 WB_END 1469 1470 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1471 Universe::heap()->collect(GCCause::_wb_young_gc); 1472 WB_END 1473 1474 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1475 // static+volatile in order to force the read to happen 1476 // (not be eliminated by the compiler) 1477 static char c; 1478 static volatile char* p; 1479 1480 p = os::reserve_memory(os::vm_allocation_granularity()); 1481 if (p == nullptr) { 1482 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1483 } 1484 1485 c = *p; 1486 WB_END 1487 1488 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1489 const char* features = VM_Version::features_string(); 1490 ThreadToNativeFromVM ttn(thread); 1491 jstring features_string = env->NewStringUTF(features); 1492 1493 CHECK_JNI_EXCEPTION_(env, nullptr); 1494 1495 return features_string; 1496 WB_END 1497 1498 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) { 1499 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1500 return CodeCache::get_code_heap(code)->code_blob_type(); 1501 } 1502 1503 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) { 1504 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1505 return CodeCache::get_code_heap(blob_type); 1506 } 1507 1508 struct CodeBlobStub { 1509 CodeBlobStub(const CodeBlob* blob) : 1510 name(os::strdup(blob->name())), 1511 size(blob->size()), 1512 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))), 1513 address((jlong) blob) { } 1514 ~CodeBlobStub() { os::free((void*) name); } 1515 const char* const name; 1516 const jint size; 1517 const jint blob_type; 1518 const jlong address; 1519 }; 1520 1521 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1522 ResourceMark rm; 1523 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1524 CHECK_JNI_EXCEPTION_(env, nullptr); 1525 jobjectArray result = env->NewObjectArray(4, clazz, nullptr); 1526 1527 jstring name = env->NewStringUTF(cb->name); 1528 CHECK_JNI_EXCEPTION_(env, nullptr); 1529 env->SetObjectArrayElement(result, 0, name); 1530 1531 jobject obj = integerBox(thread, env, cb->size); 1532 CHECK_JNI_EXCEPTION_(env, nullptr); 1533 env->SetObjectArrayElement(result, 1, obj); 1534 1535 obj = integerBox(thread, env, cb->blob_type); 1536 CHECK_JNI_EXCEPTION_(env, nullptr); 1537 env->SetObjectArrayElement(result, 2, obj); 1538 1539 obj = longBox(thread, env, cb->address); 1540 CHECK_JNI_EXCEPTION_(env, nullptr); 1541 env->SetObjectArrayElement(result, 3, obj); 1542 1543 return result; 1544 } 1545 1546 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1547 ResourceMark rm(THREAD); 1548 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1549 CHECK_JNI_EXCEPTION_(env, nullptr); 1550 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1551 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1552 jobjectArray result = nullptr; 1553 if (code == nullptr) { 1554 return result; 1555 } 1556 int comp_level = code->comp_level(); 1557 int insts_size = code->insts_size(); 1558 1559 ThreadToNativeFromVM ttn(thread); 1560 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1561 CHECK_JNI_EXCEPTION_(env, nullptr); 1562 result = env->NewObjectArray(5, clazz, nullptr); 1563 if (result == nullptr) { 1564 return result; 1565 } 1566 1567 CodeBlobStub stub(code); 1568 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1569 CHECK_JNI_EXCEPTION_(env, nullptr); 1570 env->SetObjectArrayElement(result, 0, codeBlob); 1571 1572 jobject level = integerBox(thread, env, comp_level); 1573 CHECK_JNI_EXCEPTION_(env, nullptr); 1574 env->SetObjectArrayElement(result, 1, level); 1575 1576 jbyteArray insts = env->NewByteArray(insts_size); 1577 CHECK_JNI_EXCEPTION_(env, nullptr); 1578 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1579 env->SetObjectArrayElement(result, 2, insts); 1580 1581 jobject id = integerBox(thread, env, code->compile_id()); 1582 CHECK_JNI_EXCEPTION_(env, nullptr); 1583 env->SetObjectArrayElement(result, 3, id); 1584 1585 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1586 CHECK_JNI_EXCEPTION_(env, nullptr); 1587 env->SetObjectArrayElement(result, 4, entry_point); 1588 1589 return result; 1590 WB_END 1591 1592 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) { 1593 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1594 BufferBlob* blob; 1595 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1596 if (full_size < size) { 1597 full_size += align_up(size - full_size, oopSize); 1598 } 1599 { 1600 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1601 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1602 if (blob != nullptr) { 1603 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1604 } 1605 } 1606 // Track memory usage statistic after releasing CodeCache_lock 1607 MemoryService::track_code_cache_memory_usage(); 1608 return blob; 1609 } 1610 1611 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1612 if (size < 0) { 1613 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1614 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1615 } 1616 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type)); 1617 WB_END 1618 1619 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1620 if (addr == 0) { 1621 return; 1622 } 1623 BufferBlob::free((BufferBlob*) addr); 1624 WB_END 1625 1626 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1627 ResourceMark rm; 1628 GrowableArray<CodeBlobStub*> blobs; 1629 { 1630 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1631 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type)); 1632 if (heap == nullptr) { 1633 return nullptr; 1634 } 1635 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1636 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) { 1637 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1638 new (stub) CodeBlobStub(cb); 1639 blobs.append(stub); 1640 } 1641 } 1642 ThreadToNativeFromVM ttn(thread); 1643 jobjectArray result = nullptr; 1644 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1645 CHECK_JNI_EXCEPTION_(env, nullptr); 1646 result = env->NewObjectArray(blobs.length(), clazz, nullptr); 1647 CHECK_JNI_EXCEPTION_(env, nullptr); 1648 if (result == nullptr) { 1649 return result; 1650 } 1651 int i = 0; 1652 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1653 it != blobs.end(); ++it) { 1654 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1655 CHECK_JNI_EXCEPTION_(env, nullptr); 1656 env->SetObjectArrayElement(result, i, obj); 1657 CHECK_JNI_EXCEPTION_(env, nullptr); 1658 ++i; 1659 } 1660 return result; 1661 WB_END 1662 1663 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1664 return CompileBroker::get_compilation_activity_mode(); 1665 WB_END 1666 1667 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1668 if (addr == 0) { 1669 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1670 "WB_GetCodeBlob: addr is null"); 1671 } 1672 ThreadToNativeFromVM ttn(thread); 1673 CodeBlobStub stub((CodeBlob*) addr); 1674 return codeBlob2objectArray(thread, env, &stub); 1675 WB_END 1676 1677 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1678 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1679 CHECK_JNI_EXCEPTION_(env, 0); 1680 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1681 return (jlong) mh->method_data(); 1682 WB_END 1683 1684 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1685 return (jlong) thread->stack_size(); 1686 WB_END 1687 1688 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1689 return (jlong) thread->stack_overflow_state()->stack_available( 1690 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size(); 1691 WB_END 1692 1693 1694 int WhiteBox::array_bytes_to_length(size_t bytes) { 1695 return Array<u1>::bytes_to_length(bytes); 1696 } 1697 1698 /////////////// 1699 // MetaspaceTestContext and MetaspaceTestArena 1700 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit)) 1701 metaspace::MetaspaceTestContext* context = 1702 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit); 1703 return (jlong)p2i(context); 1704 WB_END 1705 1706 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1707 delete (metaspace::MetaspaceTestContext*) context; 1708 WB_END 1709 1710 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1711 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1712 context0->purge_area(); 1713 WB_END 1714 1715 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1716 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1717 context0->print_on(tty); 1718 WB_END 1719 1720 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1721 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1722 return context0->committed_words(); 1723 WB_END 1724 1725 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1726 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1727 return context0->used_words(); 1728 WB_END 1729 1730 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro)) 1731 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType; 1732 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1733 return (jlong)p2i(context0->create_arena(type)); 1734 WB_END 1735 1736 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena)) 1737 delete (metaspace::MetaspaceTestArena*) arena; 1738 WB_END 1739 1740 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size)) 1741 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena; 1742 MetaWord* p = arena0->allocate((size_t) word_size); 1743 return (jlong)p2i(p); 1744 WB_END 1745 1746 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size)) 1747 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena; 1748 arena0->deallocate((MetaWord*)p, (size_t) word_size); 1749 WB_END 1750 1751 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb)) 1752 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord; 1753 WB_END 1754 1755 ////////////// 1756 1757 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1758 if (size < 0) { 1759 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1760 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1761 } 1762 1763 oop class_loader_oop = JNIHandles::resolve(class_loader); 1764 ClassLoaderData* cld = class_loader_oop != nullptr 1765 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1766 : ClassLoaderData::the_null_class_loader_data(); 1767 1768 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1769 1770 return (jlong)(uintptr_t)metadata; 1771 WB_END 1772 1773 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1774 jstring version, jstring location, jobjectArray packages)) 1775 Handle h_module (THREAD, JNIHandles::resolve(module)); 1776 Modules::define_module(h_module, is_open, version, location, packages, CHECK); 1777 WB_END 1778 1779 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1780 Handle h_from_module (THREAD, JNIHandles::resolve(from_module)); 1781 Handle h_to_module (THREAD, JNIHandles::resolve(to_module)); 1782 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK); 1783 WB_END 1784 1785 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1786 Handle h_module (THREAD, JNIHandles::resolve(module)); 1787 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK); 1788 WB_END 1789 1790 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1791 Handle h_module (THREAD, JNIHandles::resolve(module)); 1792 Modules::add_module_exports(h_module, package, Handle(), CHECK); 1793 WB_END 1794 1795 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1796 Handle h_from_module (THREAD, JNIHandles::resolve(from_module)); 1797 Handle h_source_module (THREAD, JNIHandles::resolve(source_module)); 1798 Modules::add_reads_module(h_from_module, h_source_module, CHECK); 1799 WB_END 1800 1801 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1802 if (inc < 0) { 1803 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1804 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1805 } 1806 1807 jlong max_size_t = (jlong) ((size_t) -1); 1808 if (inc > max_size_t) { 1809 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1810 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1811 } 1812 1813 size_t new_cap_until_GC = 0; 1814 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1815 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1816 if (!success) { 1817 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1818 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1819 "due to contention with another thread"); 1820 } 1821 return (jlong) new_cap_until_GC; 1822 WB_END 1823 1824 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1825 return (jlong) MetaspaceGC::capacity_until_GC(); 1826 WB_END 1827 1828 // The function is only valid when CDS is available. 1829 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb)) 1830 #if INCLUDE_CDS 1831 return (jlong)MetaspaceShared::core_region_alignment(); 1832 #else 1833 ShouldNotReachHere(); 1834 return 0L; 1835 #endif 1836 WB_END 1837 1838 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1839 oop obj_oop = JNIHandles::resolve(obj); 1840 return (jboolean) obj_oop->mark().has_monitor(); 1841 WB_END 1842 1843 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb)) 1844 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors"); 1845 return ObjectSynchronizer::request_deflate_idle_monitors(); 1846 WB_END 1847 1848 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1849 VM_ForceSafepoint force_safepoint_op; 1850 VMThread::execute(&force_safepoint_op); 1851 WB_END 1852 1853 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb)) 1854 nullStream dev_null; 1855 ClassLoaderStatsVMOperation force_op(&dev_null); 1856 VMThread::execute(&force_op); 1857 WB_END 1858 1859 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1860 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1861 return (jlong) ik->constants(); 1862 WB_END 1863 1864 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1865 return ConstantPool::CPCACHE_INDEX_TAG; 1866 WB_END 1867 1868 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1869 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1870 ConstantPool* cp = ik->constants(); 1871 if (cp->cache() == nullptr) { 1872 return -1; 1873 } 1874 return cp->cache()->length(); 1875 WB_END 1876 1877 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1878 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1879 ConstantPool* cp = ik->constants(); 1880 if (cp->cache() == nullptr) { 1881 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1882 } 1883 jint cpci = index; 1884 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1885 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1886 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1887 } 1888 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1889 return cpi; 1890 WB_END 1891 1892 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1893 return ConstantPool::encode_invokedynamic_index(index); 1894 WB_END 1895 1896 WB_ENTRY(jint, WB_getFieldEntriesLength(JNIEnv* env, jobject wb, jclass klass)) 1897 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1898 ConstantPool* cp = ik->constants(); 1899 if (cp->cache() == nullptr) { 1900 return -1; 1901 } 1902 return cp->resolved_field_entries_length(); 1903 WB_END 1904 1905 WB_ENTRY(jint, WB_getFieldCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index)) 1906 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1907 ConstantPool* cp = ik->constants(); 1908 if (cp->cache() == NULL) { 1909 return -1; 1910 } 1911 return cp->resolved_field_entry_at(index)->constant_pool_index(); 1912 WB_END 1913 1914 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass)) 1915 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1916 ConstantPool* cp = ik->constants(); 1917 if (cp->cache() == nullptr) { 1918 return -1; 1919 } 1920 return cp->resolved_indy_entries_length(); 1921 WB_END 1922 1923 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index)) 1924 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1925 ConstantPool* cp = ik->constants(); 1926 if (cp->cache() == nullptr) { 1927 return -1; 1928 } 1929 return cp->resolved_indy_entry_at(index)->constant_pool_index(); 1930 WB_END 1931 1932 WB_ENTRY(jobject, WB_printClasses(JNIEnv* env, jobject wb, jstring class_name_pattern, jint flags)) 1933 ThreadToNativeFromVM ttnfv(thread); 1934 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr); 1935 ResourceMark rm; 1936 stringStream st; 1937 { 1938 ThreadInVMfromNative ttvfn(thread); // back to VM 1939 ClassPrinter::print_classes(c, flags, &st); 1940 } 1941 jstring result = env->NewStringUTF(st.freeze()); 1942 CHECK_JNI_EXCEPTION_(env, nullptr); 1943 return result; 1944 WB_END 1945 1946 WB_ENTRY(jobject, WB_printMethods(JNIEnv* env, jobject wb, jstring class_name_pattern, jstring method_pattern, jint flags)) 1947 ThreadToNativeFromVM ttnfv(thread); 1948 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr); 1949 const char* m = env->GetStringUTFChars(method_pattern, nullptr); 1950 ResourceMark rm; 1951 stringStream st; 1952 { 1953 ThreadInVMfromNative ttvfn(thread); // back to VM 1954 ClassPrinter::print_methods(c, m, flags, &st); 1955 } 1956 jstring result = env->NewStringUTF(st.freeze()); 1957 CHECK_JNI_EXCEPTION_(env, nullptr); 1958 return result; 1959 WB_END 1960 1961 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1962 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1963 VMThread::execute(&clear_ics); 1964 WB_END 1965 1966 template <typename T> 1967 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1968 assert(value != nullptr, "sanity"); 1969 if (method == nullptr || name == nullptr) { 1970 return false; 1971 } 1972 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1973 CHECK_JNI_EXCEPTION_(env, false); 1974 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1975 // can't be in VM when we call JNI 1976 ThreadToNativeFromVM ttnfv(thread); 1977 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1978 CHECK_JNI_EXCEPTION_(env, false); 1979 enum CompileCommand option = CompilerOracle::string_to_option(flag_name); 1980 env->ReleaseStringUTFChars(name, flag_name); 1981 if (option == CompileCommand::Unknown) { 1982 return false; 1983 } 1984 if (!CompilerOracle::option_matches_type(option, *value)) { 1985 return false; 1986 } 1987 return CompilerOracle::has_option_value(mh, option, *value); 1988 } 1989 1990 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1991 bool result; 1992 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1993 // can't be in VM when we call JNI 1994 ThreadToNativeFromVM ttnfv(thread); 1995 return booleanBox(thread, env, result); 1996 } 1997 return nullptr; 1998 WB_END 1999 2000 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2001 intx result; 2002 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 2003 // can't be in VM when we call JNI 2004 ThreadToNativeFromVM ttnfv(thread); 2005 return longBox(thread, env, result); 2006 } 2007 return nullptr; 2008 WB_END 2009 2010 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2011 uintx result; 2012 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 2013 // can't be in VM when we call JNI 2014 ThreadToNativeFromVM ttnfv(thread); 2015 return longBox(thread, env, result); 2016 } 2017 return nullptr; 2018 WB_END 2019 2020 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2021 double result; 2022 if (GetMethodOption <double> (thread, env, method, name, &result)) { 2023 // can't be in VM when we call JNI 2024 ThreadToNativeFromVM ttnfv(thread); 2025 return doubleBox(thread, env, result); 2026 } 2027 return nullptr; 2028 WB_END 2029 2030 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2031 ccstr ccstrResult; 2032 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 2033 // can't be in VM when we call JNI 2034 ThreadToNativeFromVM ttnfv(thread); 2035 jstring result = env->NewStringUTF(ccstrResult); 2036 CHECK_JNI_EXCEPTION_(env, nullptr); 2037 return result; 2038 } 2039 return nullptr; 2040 WB_END 2041 2042 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb)) 2043 const char* p = Arguments::get_default_shared_archive_path(); 2044 ThreadToNativeFromVM ttn(thread); 2045 jstring path_string = env->NewStringUTF(p); 2046 2047 CHECK_JNI_EXCEPTION_(env, nullptr); 2048 2049 return path_string; 2050 WB_END 2051 2052 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb)) 2053 return UseSharedSpaces; 2054 WB_END 2055 2056 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb)) 2057 #if INCLUDE_CDS 2058 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION; 2059 #else 2060 ShouldNotReachHere(); 2061 return (jint)-1; 2062 #endif 2063 WB_END 2064 2065 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb)) 2066 #if INCLUDE_CDS 2067 return (jint)CURRENT_CDS_ARCHIVE_VERSION; 2068 #else 2069 ShouldNotReachHere(); 2070 return (jint)-1; 2071 #endif 2072 WB_END 2073 2074 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb)) 2075 return FileMapInfo::memory_mapping_failed(); 2076 WB_END 2077 2078 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str)) 2079 ResourceMark rm(THREAD); 2080 oop str_oop = JNIHandles::resolve(str); 2081 int length; 2082 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false)); 2083 return StringTable::lookup_shared(chars, length) == str_oop; 2084 WB_END 2085 2086 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 2087 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2088 WB_END 2089 2090 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env)) 2091 return ArchiveHeapLoader::is_mapped(); 2092 WB_END 2093 2094 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz)) 2095 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 2096 if (!k->is_instance_klass()) { 2097 return; 2098 } 2099 InstanceKlass *ik = InstanceKlass::cast(k); 2100 ik->link_class(THREAD); // may throw verification error 2101 WB_END 2102 2103 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 2104 return ArchiveHeapLoader::is_mapped(); 2105 WB_END 2106 2107 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env)) 2108 #if INCLUDE_CDS 2109 return true; 2110 #else 2111 return false; 2112 #endif // INCLUDE_CDS 2113 WB_END 2114 2115 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env)) 2116 #if COMPILER2_OR_JVMCI 2117 return true; 2118 #else 2119 return false; 2120 #endif 2121 WB_END 2122 2123 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env)) 2124 #if INCLUDE_JVMCI 2125 return JVMCIGlobals::gc_supports_jvmci(); 2126 #else 2127 return false; 2128 #endif 2129 WB_END 2130 2131 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env)) 2132 return HeapShared::can_write(); 2133 WB_END 2134 2135 2136 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env)) 2137 #if INCLUDE_JFR 2138 return true; 2139 #else 2140 return false; 2141 #endif // INCLUDE_JFR 2142 WB_END 2143 2144 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env)) 2145 #if defined(DTRACE_ENABLED) 2146 return true; 2147 #else 2148 return false; 2149 #endif // DTRACE_ENABLED 2150 WB_END 2151 2152 #if INCLUDE_CDS 2153 2154 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name)) 2155 ResourceMark rm; 2156 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 2157 jint result = (jint)CDSConstants::get_cds_offset(c_name); 2158 return result; 2159 WB_END 2160 2161 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name)) 2162 ResourceMark rm; 2163 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 2164 jint result = (jint)CDSConstants::get_cds_constant(c_name); 2165 return result; 2166 WB_END 2167 2168 #endif // INCLUDE_CDS 2169 2170 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle)) 2171 class ReadMonitorsClosure : public HandshakeClosure { 2172 jboolean _executed; 2173 2174 void do_thread(Thread* th) { 2175 JavaThread* jt = JavaThread::cast(th); 2176 ResourceMark rm; 2177 2178 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>(); 2179 2180 if (!jt->has_last_Java_frame()) { 2181 return; 2182 } 2183 RegisterMap rmap(jt, 2184 RegisterMap::UpdateMap::include, 2185 RegisterMap::ProcessFrames::include, 2186 RegisterMap::WalkContinuation::skip); 2187 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) { 2188 GrowableArray<MonitorInfo*> *monitors = vf->monitors(); 2189 if (monitors != nullptr) { 2190 int len = monitors->length(); 2191 // Walk monitors youngest to oldest 2192 for (int i = len - 1; i >= 0; i--) { 2193 MonitorInfo* mon_info = monitors->at(i); 2194 if (mon_info->eliminated()) continue; 2195 oop owner = mon_info->owner(); 2196 if (owner != nullptr) { 2197 info->append(mon_info); 2198 } 2199 } 2200 } 2201 } 2202 _executed = true; 2203 } 2204 2205 public: 2206 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {} 2207 jboolean executed() const { return _executed; } 2208 }; 2209 2210 ReadMonitorsClosure rmc; 2211 if (thread_handle != nullptr) { 2212 ThreadsListHandle tlh; 2213 JavaThread* target = nullptr; 2214 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2215 if (is_alive) { 2216 Handshake::execute(&rmc, &tlh, target); 2217 } 2218 } 2219 return rmc.executed(); 2220 WB_END 2221 2222 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 2223 class TraceSelfClosure : public HandshakeClosure { 2224 jint _num_threads_completed; 2225 2226 void do_thread(Thread* th) { 2227 JavaThread* jt = JavaThread::cast(th); 2228 ResourceMark rm; 2229 2230 jt->print_on(tty); 2231 jt->print_stack_on(tty); 2232 tty->cr(); 2233 Atomic::inc(&_num_threads_completed); 2234 } 2235 2236 public: 2237 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {} 2238 2239 jint num_threads_completed() const { return _num_threads_completed; } 2240 }; 2241 TraceSelfClosure tsc(Thread::current()); 2242 2243 if (all_threads) { 2244 Handshake::execute(&tsc); 2245 } else if (thread_handle != nullptr) { 2246 ThreadsListHandle tlh; 2247 JavaThread* target = nullptr; 2248 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2249 if (is_alive) { 2250 Handshake::execute(&tsc, &tlh, target); 2251 } 2252 } 2253 return tsc.num_threads_completed(); 2254 WB_END 2255 2256 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle)) 2257 class TraceSelfClosure : public AsyncHandshakeClosure { 2258 JavaThread* _self; 2259 void do_thread(Thread* th) { 2260 assert(th->is_Java_thread(), "sanity"); 2261 // AsynchHandshake handshakes are only executed by target. 2262 assert(_self == th, "Must be"); 2263 assert(Thread::current() == th, "Must be"); 2264 JavaThread* jt = JavaThread::cast(th); 2265 ResourceMark rm; 2266 jt->print_on(tty); 2267 jt->print_stack_on(tty); 2268 tty->cr(); 2269 } 2270 2271 public: 2272 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {} 2273 }; 2274 if (thread_handle != nullptr) { 2275 ThreadsListHandle tlh; 2276 JavaThread* target = nullptr; 2277 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2278 if (is_alive) { 2279 TraceSelfClosure* tsc = new TraceSelfClosure(target); 2280 Handshake::execute(tsc, target); 2281 } 2282 } 2283 WB_END 2284 2285 static volatile int _emulated_lock = 0; 2286 2287 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender)) 2288 JavaThread* self = JavaThread::current(); 2289 2290 { 2291 // Before trying to acquire the lock transition into a safepoint safe state. 2292 // Otherwise if either suspender or suspendee blocks for a safepoint 2293 // in ~ThreadBlockInVM the other one could loop forever trying to acquire 2294 // the lock without allowing the safepoint to progress. 2295 ThreadBlockInVM tbivm(self); 2296 2297 // We will deadlock here if we are 'suspender' and 'suspendee' 2298 // suspended in ~ThreadBlockInVM. This verifies we only suspend 2299 // at the right place. 2300 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {} 2301 assert(_emulated_lock == 1, "Must be locked"); 2302 2303 // Sleep much longer in suspendee to force situation where 2304 // 'suspender' is waiting above to acquire lock. 2305 os::naked_short_sleep(suspender ? 1 : 10); 2306 } 2307 Atomic::store(&_emulated_lock, 0); 2308 WB_END 2309 2310 // Some convenience methods to deal with objects from java 2311 int WhiteBox::offset_for_field(const char* field_name, oop object, 2312 Symbol* signature_symbol) { 2313 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid"); 2314 2315 //Get the class of our object 2316 Klass* arg_klass = object->klass(); 2317 //Turn it into an instance-klass 2318 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 2319 2320 //Create symbols to look for in the class 2321 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name); 2322 2323 //To be filled in with an offset of the field we're looking for 2324 fieldDescriptor fd; 2325 2326 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 2327 if (res == nullptr) { 2328 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 2329 name_symbol->as_C_string()); 2330 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 2331 } 2332 2333 //fetch the field at the offset we've found 2334 int dest_offset = fd.offset(); 2335 2336 return dest_offset; 2337 } 2338 2339 2340 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 2341 int offset = offset_for_field(field_name, object, 2342 vmSymbols::string_signature()); 2343 oop string = object->obj_field(offset); 2344 if (string == nullptr) { 2345 return nullptr; 2346 } 2347 const char* ret = java_lang_String::as_utf8_string(string); 2348 return ret; 2349 } 2350 2351 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 2352 int offset = 2353 offset_for_field(field_name, object, vmSymbols::bool_signature()); 2354 bool ret = (object->bool_field(offset) == JNI_TRUE); 2355 return ret; 2356 } 2357 2358 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 2359 ResourceMark rm; 2360 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass)); 2361 const char* klass_name = klass->external_name(); 2362 2363 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 2364 2365 // one by one registration natives for exception catching 2366 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 2367 CHECK_JNI_EXCEPTION(env); 2368 for (int i = 0, n = method_count; i < n; ++i) { 2369 // Skip dummy entries 2370 if (method_array[i].fnPtr == nullptr) continue; 2371 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 2372 jthrowable throwable_obj = env->ExceptionOccurred(); 2373 if (throwable_obj != nullptr) { 2374 env->ExceptionClear(); 2375 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 2376 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 2377 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 2378 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s", 2379 klass_name, method_array[i].name, method_array[i].signature); 2380 } 2381 } else { 2382 // Registration failed unexpectedly. 2383 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered", 2384 klass_name, method_array[i].name, method_array[i].signature); 2385 env->UnregisterNatives(wbclass); 2386 break; 2387 } 2388 } 2389 } 2390 } 2391 2392 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 2393 // can't be in VM when we call JNI 2394 ThreadToNativeFromVM ttnfv(thread); 2395 const char* dir = env->GetStringUTFChars(compDirect, nullptr); 2396 CHECK_JNI_EXCEPTION_(env, 0); 2397 int ret; 2398 { 2399 ThreadInVMfromNative ttvfn(thread); // back to VM 2400 ret = DirectivesParser::parse_string(dir, tty); 2401 } 2402 env->ReleaseStringUTFChars(compDirect, dir); 2403 // -1 for error parsing directive. Return 0 as number of directives added. 2404 if (ret == -1) { 2405 ret = 0; 2406 } 2407 return (jint) ret; 2408 WB_END 2409 2410 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 2411 DirectivesStack::pop(count); 2412 WB_END 2413 2414 // Checks that the library libfile has the noexecstack bit set. 2415 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 2416 jboolean ret = false; 2417 #ifdef LINUX 2418 // Can't be in VM when we call JNI. 2419 ThreadToNativeFromVM ttnfv(thread); 2420 const char* lf = env->GetStringUTFChars(libfile, nullptr); 2421 CHECK_JNI_EXCEPTION_(env, 0); 2422 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 2423 env->ReleaseStringUTFChars(libfile, lf); 2424 #endif 2425 return ret; 2426 WB_END 2427 2428 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 2429 LINUX_ONLY(return OSContainer::is_containerized();) 2430 return false; 2431 WB_END 2432 2433 // Physical memory of the host machine (including containers) 2434 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o)) 2435 LINUX_ONLY(return os::Linux::physical_memory();) 2436 return os::physical_memory(); 2437 WB_END 2438 2439 // Physical swap of the host machine (including containers), Linux only. 2440 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o)) 2441 LINUX_ONLY(return (jlong)os::Linux::host_swap();) 2442 return -1; // Not used/implemented on other platforms 2443 WB_END 2444 2445 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env, 2446 jobject o, 2447 jstring proc_cgroups, 2448 jstring proc_self_cgroup, 2449 jstring proc_self_mountinfo)) 2450 jint ret = 0; 2451 #ifdef LINUX 2452 ThreadToNativeFromVM ttnfv(thread); 2453 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, nullptr); 2454 CHECK_JNI_EXCEPTION_(env, 0); 2455 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr); 2456 CHECK_JNI_EXCEPTION_(env, 0); 2457 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr); 2458 CHECK_JNI_EXCEPTION_(env, 0); 2459 u1 cg_type_flags = 0; 2460 // This sets cg_type_flags 2461 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags); 2462 ret = (jint)cg_type_flags; 2463 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups); 2464 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup); 2465 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo); 2466 #endif 2467 return ret; 2468 WB_END 2469 2470 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 2471 os::print_os_info(tty); 2472 WB_END 2473 2474 // Elf decoder 2475 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 2476 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 2477 ElfFile::_do_not_cache_elf_section = true; 2478 #endif 2479 WB_END 2480 2481 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o)) 2482 return (jlong) ResolvedMethodTable::items_count(); 2483 WB_END 2484 2485 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o)) 2486 return (jint) ProtectionDomainCacheTable::removed_entries_count(); 2487 WB_END 2488 2489 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror)) 2490 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror)); 2491 // Return size in bytes. 2492 return k->size() * wordSize; 2493 WB_END 2494 2495 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java. 2496 // It explains how the thread's priority field is used for test state coordination. 2497 // 2498 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle)) 2499 oop target_oop = JNIHandles::resolve_non_null(target_handle); 2500 jlong tid = java_lang_Thread::thread_id(target_oop); 2501 JavaThread* target = java_lang_Thread::thread(target_oop); 2502 2503 // Grab a ThreadsListHandle to protect the target thread whilst terminating 2504 ThreadsListHandle tlh; 2505 2506 // Look up the target thread by tid to ensure it is present 2507 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid); 2508 if (t == nullptr) { 2509 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!"); 2510 } 2511 2512 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected"); 2513 // Allow target to terminate by boosting priority 2514 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1)); 2515 2516 // Now wait for the target to terminate 2517 while (!target->is_terminated()) { 2518 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint 2519 os::naked_short_sleep(0); 2520 } 2521 2522 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated"); 2523 2524 // Now release the GC inducing thread - we have to re-resolve the external oop that 2525 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now. 2526 oop original = JNIHandles::resolve_non_null(target_handle); 2527 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2)); 2528 2529 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:"); 2530 2531 // The Java code should be creating garbage and triggering GC, which would potentially move 2532 // the threadObj oop. If the exiting thread is properly protected then its threadObj should 2533 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to 2534 // kick in. 2535 for (int i = 0; i < 5; i++) { 2536 oop original = JNIHandles::resolve_non_null(target_handle); 2537 oop current = t->threadObj(); 2538 if (original != current) { 2539 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i); 2540 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!"); 2541 } else { 2542 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i); 2543 ThreadBlockInVM tbivm(thread); 2544 os::naked_short_sleep(50); 2545 } 2546 } 2547 WB_END 2548 2549 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map)) 2550 ResourceMark rm; // for verify 2551 stringStream st; 2552 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) { 2553 frame* current_frame = fst.current(); 2554 if (log) { 2555 current_frame->print_value_on(&st, nullptr); 2556 } 2557 current_frame->verify(fst.register_map()); 2558 } 2559 if (log) { 2560 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames"); 2561 tty->print_raw(st.freeze()); 2562 tty->print_cr("[WhiteBox::VerifyFrames] Done"); 2563 } 2564 WB_END 2565 2566 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb)) 2567 #if INCLUDE_JVMTI 2568 return JNI_TRUE; 2569 #else 2570 return JNI_FALSE; 2571 #endif 2572 WB_END 2573 2574 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time)) 2575 os::naked_short_sleep(time); 2576 WB_END 2577 2578 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o)) 2579 ThreadToNativeFromVM ttn(thread); 2580 jstring info_string = env->NewStringUTF(XSTR(LIBC)); 2581 CHECK_JNI_EXCEPTION_(env, nullptr); 2582 return info_string; 2583 WB_END 2584 2585 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb)) 2586 GCLocker::lock_critical(thread); 2587 WB_END 2588 2589 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb)) 2590 GCLocker::unlock_critical(thread); 2591 WB_END 2592 2593 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable)) 2594 if (!Continuations::enabled()) { 2595 tty->print_cr("WB error: must be Continuations::enabled()!"); 2596 return JNI_FALSE; 2597 } 2598 jboolean result = false; 2599 #if INCLUDE_JVMTI 2600 if (enable) { 2601 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti(); 2602 } else { 2603 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti(); 2604 } 2605 #endif 2606 return result; 2607 WB_END 2608 2609 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size)) 2610 void* const from = (void*)addr; 2611 void* const to = (void*)(addr + size); 2612 if (from > to) { 2613 os::pretouch_memory(from, to, os::vm_page_size()); 2614 } 2615 WB_END 2616 2617 #define CC (char*) 2618 2619 static JNINativeMethod methods[] = { 2620 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 2621 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 2622 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 2623 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 2624 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 2625 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 2626 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 2627 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 2628 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 2629 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses }, 2630 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount }, 2631 {CC"parseCommandLine0", 2632 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;", 2633 (void*) &WB_ParseCommandLine 2634 }, 2635 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2636 (void*)&WB_AddToBootstrapClassLoaderSearch}, 2637 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2638 (void*)&WB_AddToSystemClassLoaderSearch}, 2639 {CC"getCompressedOopsMaxHeapSize", CC"()J", 2640 (void*)&WB_GetCompressedOopsMaxHeapSize}, 2641 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 2642 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 2643 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 2644 #if INCLUDE_CDS 2645 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName}, 2646 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName}, 2647 #endif 2648 #if INCLUDE_G1GC 2649 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 2650 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles}, 2651 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 2652 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 2653 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 2654 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 2655 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 2656 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 2657 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit}, 2658 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 2659 (void*)&WB_G1AuxiliaryMemoryUsage }, 2660 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount }, 2661 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds }, 2662 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 2663 #endif // INCLUDE_G1GC 2664 #if INCLUDE_PARALLELGC 2665 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 2666 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 2667 #endif 2668 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 2669 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 2670 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType}, 2671 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 2672 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 2673 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 2674 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 2675 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 2676 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 2677 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 2678 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena }, 2679 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena }, 2680 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc }, 2681 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 2682 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized}, 2683 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 2684 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 2685 (void*)&WB_DeoptimizeMethod }, 2686 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 2687 (void*)&WB_IsMethodCompiled }, 2688 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 2689 (void*)&WB_IsMethodCompilable}, 2690 {CC"isMethodQueuedForCompilation0", 2691 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 2692 {CC"isIntrinsicAvailable0", 2693 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2694 (void*)&WB_IsIntrinsicAvailable}, 2695 {CC"makeMethodNotCompilable0", 2696 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2697 {CC"testSetDontInlineMethod0", 2698 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2699 {CC"getMethodCompilationLevel0", 2700 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2701 {CC"getMethodDecompileCount0", 2702 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount}, 2703 {CC"getMethodTrapCount0", 2704 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2705 (void*)&WB_GetMethodTrapCount}, 2706 {CC"getDeoptCount0", 2707 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount}, 2708 {CC"getMethodEntryBci0", 2709 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2710 {CC"getCompileQueueSize", 2711 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2712 {CC"testSetForceInlineMethod0", 2713 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2714 {CC"enqueueMethodForCompilation0", 2715 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2716 {CC"enqueueInitializerForCompilation0", 2717 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2718 {CC"markMethodProfiled", 2719 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled}, 2720 {CC"clearMethodState0", 2721 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2722 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2723 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2724 {CC"matchesMethod", 2725 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2726 (void*)&WB_MatchesMethod}, 2727 {CC"matchesInline", 2728 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2729 (void*)&WB_MatchesInline}, 2730 {CC"shouldPrintAssembly", 2731 CC"(Ljava/lang/reflect/Executable;I)Z", 2732 (void*)&WB_ShouldPrintAssembly}, 2733 2734 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2735 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag}, 2736 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2737 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2738 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2739 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2740 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2741 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2742 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2743 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2744 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2745 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2746 (void*)&WB_SetStringVMFlag}, 2747 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2748 (void*)&WB_GetBooleanVMFlag}, 2749 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2750 (void*)&WB_GetIntVMFlag}, 2751 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2752 (void*)&WB_GetUintVMFlag}, 2753 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2754 (void*)&WB_GetIntxVMFlag}, 2755 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2756 (void*)&WB_GetUintxVMFlag}, 2757 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2758 (void*)&WB_GetUint64VMFlag}, 2759 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2760 (void*)&WB_GetSizeTVMFlag}, 2761 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2762 (void*)&WB_GetDoubleVMFlag}, 2763 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2764 (void*)&WB_GetStringVMFlag}, 2765 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2766 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2767 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2768 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2769 {CC"allocateMetaspace", 2770 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2771 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2772 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2773 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment }, 2774 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2775 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2776 (void*)&WB_GetNMethod }, 2777 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2778 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2779 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2780 {CC"getCompilationActivityMode", 2781 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2782 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2783 (void*)&WB_GetMethodData }, 2784 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2785 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2786 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2787 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2788 (void*)&WB_DefineModule }, 2789 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2790 (void*)&WB_AddModuleExports }, 2791 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2792 (void*)&WB_AddReadsModule }, 2793 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2794 (void*)&WB_AddModuleExportsToAllUnnamed }, 2795 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2796 (void*)&WB_AddModuleExportsToAll }, 2797 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors }, 2798 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2799 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2800 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint }, 2801 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2802 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 2803 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 2804 {CC"remapInstructionOperandFromCPCache0", 2805 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 2806 {CC"encodeConstantPoolIndyIndex0", 2807 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 2808 {CC"getFieldEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getFieldEntriesLength}, 2809 {CC"getFieldCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getFieldCPIndex}, 2810 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength}, 2811 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex}, 2812 {CC"printClasses0", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printClasses}, 2813 {CC"printMethods0", CC"(Ljava/lang/String;Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printMethods}, 2814 {CC"getMethodBooleanOption", 2815 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2816 (void*)&WB_GetMethodBooleaneOption}, 2817 {CC"getMethodIntxOption", 2818 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2819 (void*)&WB_GetMethodIntxOption}, 2820 {CC"getMethodUintxOption", 2821 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2822 (void*)&WB_GetMethodUintxOption}, 2823 {CC"getMethodDoubleOption", 2824 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2825 (void*)&WB_GetMethodDoubleOption}, 2826 {CC"getMethodStringOption", 2827 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2828 (void*)&WB_GetMethodStringOption}, 2829 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;", 2830 (void*)&WB_GetDefaultArchivePath}, 2831 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion}, 2832 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion}, 2833 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled}, 2834 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString }, 2835 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2836 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped }, 2837 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass}, 2838 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2839 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded }, 2840 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded }, 2841 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded }, 2842 {CC"hasLibgraal", CC"()Z", (void*)&WB_HasLibgraal }, 2843 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded }, 2844 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC}, 2845 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive }, 2846 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed }, 2847 2848 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2849 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors }, 2850 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2851 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack }, 2852 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock}, 2853 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread }, 2854 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames }, 2855 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2856 (void*)&WB_AddCompilerDirective }, 2857 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2858 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported}, 2859 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler}, 2860 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected}, 2861 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically}, 2862 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints}, 2863 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl}, 2864 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl}, 2865 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle}, 2866 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z", 2867 (void*)&WB_ConcurrentGCRunTo}, 2868 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2869 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2870 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2871 {CC"validateCgroup", 2872 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I", 2873 (void*)&WB_ValidateCgroup }, 2874 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory }, 2875 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap }, 2876 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2877 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 2878 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount }, 2879 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount }, 2880 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize}, 2881 2882 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext}, 2883 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext}, 2884 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext}, 2885 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext}, 2886 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext}, 2887 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext}, 2888 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext}, 2889 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena}, 2890 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena}, 2891 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena}, 2892 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize}, 2893 2894 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded}, 2895 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe}, 2896 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName}, 2897 2898 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical}, 2899 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical}, 2900 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode}, 2901 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory}, 2902 }; 2903 2904 2905 #undef CC 2906 2907 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2908 { 2909 if (WhiteBoxAPI) { 2910 // Make sure that wbclass is loaded by the null classloader 2911 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass))); 2912 Handle loader(THREAD, ik->class_loader()); 2913 if (loader.is_null()) { 2914 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2915 WhiteBox::set_used(); 2916 } 2917 } 2918 } 2919 JVM_END