1 /* 2 * Copyright (c) 2012, 2024, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "cds.h" 27 #include "cds/archiveHeapLoader.hpp" 28 #include "cds/cdsConstants.hpp" 29 #include "cds/filemap.hpp" 30 #include "cds/heapShared.hpp" 31 #include "cds/metaspaceShared.hpp" 32 #include "classfile/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 "jvmtifiles/jvmtiEnv.hpp" 51 #include "logging/log.hpp" 52 #include "memory/iterator.hpp" 53 #include "memory/metadataFactory.hpp" 54 #include "memory/metaspace/testHelpers.hpp" 55 #include "memory/metaspaceUtils.hpp" 56 #include "memory/oopFactory.hpp" 57 #include "memory/resourceArea.hpp" 58 #include "memory/universe.hpp" 59 #include "nmt/mallocSiteTable.hpp" 60 #include "nmt/memTracker.hpp" 61 #include "oops/array.hpp" 62 #include "oops/compressedOops.hpp" 63 #include "oops/constantPool.inline.hpp" 64 #include "oops/klass.inline.hpp" 65 #include "oops/method.inline.hpp" 66 #include "oops/methodData.inline.hpp" 67 #include "oops/objArrayKlass.hpp" 68 #include "oops/objArrayOop.inline.hpp" 69 #include "oops/oop.inline.hpp" 70 #include "oops/typeArrayOop.inline.hpp" 71 #include "prims/jvmtiEnvBase.hpp" 72 #include "prims/resolvedMethodTable.hpp" 73 #include "prims/wbtestmethods/parserTests.hpp" 74 #include "prims/whitebox.inline.hpp" 75 #include "runtime/arguments.hpp" 76 #include "runtime/atomic.hpp" 77 #include "runtime/deoptimization.hpp" 78 #include "runtime/fieldDescriptor.inline.hpp" 79 #include "runtime/flags/jvmFlag.hpp" 80 #include "runtime/flags/jvmFlagAccess.hpp" 81 #include "runtime/frame.inline.hpp" 82 #include "runtime/handles.inline.hpp" 83 #include "runtime/handshake.hpp" 84 #include "runtime/interfaceSupport.inline.hpp" 85 #include "runtime/javaCalls.hpp" 86 #include "runtime/javaThread.inline.hpp" 87 #include "runtime/jniHandles.inline.hpp" 88 #include "runtime/lockStack.hpp" 89 #include "runtime/os.hpp" 90 #include "runtime/stackFrameStream.inline.hpp" 91 #include "runtime/synchronizer.hpp" 92 #include "runtime/threadSMR.hpp" 93 #include "runtime/vframe.hpp" 94 #include "runtime/vm_version.hpp" 95 #include "services/memoryService.hpp" 96 #include "utilities/align.hpp" 97 #include "utilities/checkedCast.hpp" 98 #include "utilities/debug.hpp" 99 #include "utilities/elfFile.hpp" 100 #include "utilities/exceptions.hpp" 101 #include "utilities/macros.hpp" 102 #include "utilities/nativeCallStack.hpp" 103 #include "utilities/ostream.hpp" 104 #if INCLUDE_G1GC 105 #include "gc/g1/g1Arguments.hpp" 106 #include "gc/g1/g1CollectedHeap.inline.hpp" 107 #include "gc/g1/g1ConcurrentMark.hpp" 108 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp" 109 #include "gc/g1/g1HeapRegionManager.hpp" 110 #include "gc/g1/g1HeapRegionRemSet.inline.hpp" 111 #endif // INCLUDE_G1GC 112 #if INCLUDE_PARALLELGC 113 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 114 #endif // INCLUDE_PARALLELGC 115 #if INCLUDE_SERIALGC 116 #include "gc/serial/serialHeap.hpp" 117 #endif // INCLUDE_SERIALGC 118 #if INCLUDE_ZGC 119 #include "gc/z/zAddress.inline.hpp" 120 #endif // INCLUDE_ZGC 121 #if INCLUDE_JVMCI 122 #include "jvmci/jvmciEnv.hpp" 123 #include "jvmci/jvmciRuntime.hpp" 124 #endif 125 #ifdef LINUX 126 #include "cgroupSubsystem_linux.hpp" 127 #include "osContainer_linux.hpp" 128 #include "os_linux.hpp" 129 #endif 130 131 #define CHECK_JNI_EXCEPTION_(env, value) \ 132 do { \ 133 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 134 THREAD->clear_pending_jni_exception_check(); \ 135 if (HAS_PENDING_EXCEPTION) { \ 136 return(value); \ 137 } \ 138 } while (0) 139 140 #define CHECK_JNI_EXCEPTION(env) \ 141 do { \ 142 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 143 THREAD->clear_pending_jni_exception_check(); \ 144 if (HAS_PENDING_EXCEPTION) { \ 145 return; \ 146 } \ 147 } while (0) 148 149 bool WhiteBox::_used = false; 150 volatile bool WhiteBox::compilation_locked = false; 151 152 class VM_WhiteBoxOperation : public VM_Operation { 153 public: 154 VM_WhiteBoxOperation() { } 155 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 156 bool allow_nested_vm_operations() const { return true; } 157 }; 158 159 160 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 161 return (jlong)(void*)JNIHandles::resolve(obj); 162 WB_END 163 164 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 165 return heapOopSize; 166 WB_END 167 168 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 169 return (jint)os::vm_page_size(); 170 WB_END 171 172 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 173 return os::vm_allocation_granularity(); 174 WB_END 175 176 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 177 return os::large_page_size(); 178 WB_END 179 180 class WBIsKlassAliveClosure : public LockedClassesDo { 181 Symbol* _name; 182 int _count; 183 public: 184 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {} 185 186 void do_klass(Klass* k) { 187 Symbol* ksym = k->name(); 188 if (ksym->fast_compare(_name) == 0) { 189 _count++; 190 } else if (k->is_instance_klass()) { 191 // Need special handling for hidden classes because the JVM 192 // appends "+<hex-address>" to hidden class names. 193 InstanceKlass *ik = InstanceKlass::cast(k); 194 if (ik->is_hidden()) { 195 ResourceMark rm; 196 char* k_name = ksym->as_C_string(); 197 // Find the first '+' char and truncate the string at that point. 198 // NOTE: This will not work correctly if the original hidden class 199 // name contains a '+'. 200 char* plus_char = strchr(k_name, '+'); 201 if (plus_char != nullptr) { 202 *plus_char = 0; 203 char* c_name = _name->as_C_string(); 204 if (strcmp(c_name, k_name) == 0) { 205 _count++; 206 } 207 } 208 } 209 } 210 } 211 212 int count() const { 213 return _count; 214 } 215 }; 216 217 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name)) 218 oop h_name = JNIHandles::resolve(name); 219 if (h_name == nullptr) { 220 return 0; 221 } 222 Symbol* sym = java_lang_String::as_symbol(h_name); 223 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 224 225 WBIsKlassAliveClosure closure(sym); 226 ClassLoaderDataGraph::classes_do(&closure); 227 228 // Return the count of alive classes with this name. 229 return closure.count(); 230 WB_END 231 232 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name)) 233 oop h_name = JNIHandles::resolve(name); 234 if (h_name == nullptr) { 235 return 0; 236 } 237 Symbol* sym = java_lang_String::as_symbol(h_name); 238 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 239 return (jint)sym->refcount(); 240 WB_END 241 242 243 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 244 #if INCLUDE_JVMTI 245 ResourceMark rm; 246 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 247 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 248 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 249 assert(err == JVMTI_ERROR_NONE, "must not fail"); 250 #endif 251 } 252 WB_END 253 254 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 255 #if INCLUDE_JVMTI 256 ResourceMark rm; 257 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 258 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 259 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 260 assert(err == JVMTI_ERROR_NONE, "must not fail"); 261 #endif 262 } 263 WB_END 264 265 266 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 267 return (jlong)Arguments::max_heap_for_compressed_oops(); 268 } 269 WB_END 270 271 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 272 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " " 273 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 274 MinHeapSize, 275 InitialHeapSize, 276 MaxHeapSize, 277 SpaceAlignment, 278 HeapAlignment); 279 } 280 WB_END 281 282 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 283 size_t granularity = os::vm_allocation_granularity(); 284 ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size()); 285 VirtualSpace vs; 286 vs.initialize(rhs, 50 * granularity); 287 288 // Check if constraints are complied 289 if (!( UseCompressedOops && rhs.base() != nullptr && 290 CompressedOops::base() != nullptr && 291 CompressedOops::use_implicit_null_checks() )) { 292 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 293 "\tUseCompressedOops is %d\n" 294 "\trhs.base() is " PTR_FORMAT "\n" 295 "\tCompressedOops::base() is " PTR_FORMAT "\n" 296 "\tCompressedOops::use_implicit_null_checks() is %d", 297 UseCompressedOops, 298 p2i(rhs.base()), 299 p2i(CompressedOops::base()), 300 CompressedOops::use_implicit_null_checks()); 301 return; 302 } 303 tty->print_cr("Reading from no access area... "); 304 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 305 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 306 WB_END 307 308 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 309 size_t magnitude, size_t iterations) { 310 size_t granularity = os::vm_allocation_granularity(); 311 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size()); 312 VirtualSpace vs; 313 if (!vs.initialize(rhs, 0)) { 314 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 315 return 3; 316 } 317 318 int seed = os::random(); 319 tty->print_cr("Random seed is %d", seed); 320 321 for (size_t i = 0; i < iterations; i++) { 322 323 // Whether we will shrink or grow 324 bool shrink = os::random() % 2L == 0; 325 326 // Get random delta to resize virtual space 327 size_t delta = (size_t)os::random() % magnitude; 328 329 // If we are about to shrink virtual space below zero, then expand instead 330 if (shrink && vs.committed_size() < delta) { 331 shrink = false; 332 } 333 334 // Resizing by delta 335 if (shrink) { 336 vs.shrink_by(delta); 337 } else { 338 // If expanding fails expand_by will silently return false 339 vs.expand_by(delta, true); 340 } 341 } 342 return 0; 343 } 344 345 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 346 jlong reserved_space_size, jlong magnitude, jlong iterations)) 347 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 348 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 349 iterations); 350 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 351 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 352 return 1; 353 } 354 355 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 356 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 357 if (sizeof(size_t) < sizeof(jlong)) { 358 jlong size_t_max_value = (jlong)SIZE_MAX; 359 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 360 || iterations > size_t_max_value) { 361 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 362 return 2; 363 } 364 } 365 366 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 367 (size_t) magnitude, (size_t) iterations); 368 WB_END 369 370 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name)) 371 return GCConfig::is_gc_supported((CollectedHeap::Name)name); 372 WB_END 373 374 WB_ENTRY(jboolean, WB_HasLibgraal(JNIEnv* env, jobject o)) 375 #if INCLUDE_JVMCI 376 return JVMCI::shared_library_exists(); 377 #endif 378 return false; 379 WB_END 380 381 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name)) 382 #if INCLUDE_JVMCI 383 if (EnableJVMCI) { 384 // Enter the JVMCI env that will be used by the CompileBroker. 385 JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__); 386 return jvmciEnv.init_error() == JNI_OK && jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name); 387 } 388 #endif 389 return false; 390 WB_END 391 392 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name)) 393 return GCConfig::is_gc_selected((CollectedHeap::Name)name); 394 WB_END 395 396 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o)) 397 return GCConfig::is_gc_selected_ergonomically(); 398 WB_END 399 400 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 401 oop p = JNIHandles::resolve(obj); 402 #if INCLUDE_G1GC 403 if (UseG1GC) { 404 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 405 const HeapRegion* hr = g1h->heap_region_containing(p); 406 return hr->is_old_or_humongous(); 407 } 408 #endif 409 #if INCLUDE_PARALLELGC 410 if (UseParallelGC) { 411 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 412 return !psh->is_in_young(p); 413 } 414 #endif 415 #if INCLUDE_ZGC 416 if (UseZGC) { 417 if (ZGenerational) { 418 return ZHeap::heap()->is_old(to_zaddress(p)); 419 } else { 420 return Universe::heap()->is_in(p); 421 } 422 } 423 #endif 424 #if INCLUDE_SHENANDOAHGC 425 if (UseShenandoahGC) { 426 return Universe::heap()->is_in(p); 427 } 428 #endif 429 #if INCLUDE_SERIALGC 430 if (UseSerialGC) { 431 return !SerialHeap::heap()->is_in_young(p); 432 } 433 #endif 434 ShouldNotReachHere(); 435 return false; 436 WB_END 437 438 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 439 oop p = JNIHandles::resolve(obj); 440 return p->size() * HeapWordSize; 441 WB_END 442 443 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 444 return (jlong)SpaceAlignment; 445 WB_END 446 447 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 448 return (jlong)HeapAlignment; 449 WB_END 450 451 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o)) 452 return Universe::heap()->supports_concurrent_gc_breakpoints(); 453 WB_END 454 455 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o)) 456 ConcurrentGCBreakpoints::acquire_control(); 457 WB_END 458 459 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o)) 460 ConcurrentGCBreakpoints::release_control(); 461 WB_END 462 463 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o)) 464 ConcurrentGCBreakpoints::run_to_idle(); 465 WB_END 466 467 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at)) 468 Handle h_name(THREAD, JNIHandles::resolve(at)); 469 ResourceMark rm; 470 const char* c_name = java_lang_String::as_utf8_string(h_name()); 471 return ConcurrentGCBreakpoints::run_to(c_name); 472 WB_END 473 474 #if INCLUDE_G1GC 475 476 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 477 if (UseG1GC) { 478 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 479 oop result = JNIHandles::resolve(obj); 480 const HeapRegion* hr = g1h->heap_region_containing(result); 481 return hr->is_humongous(); 482 } 483 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 484 WB_END 485 486 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(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_humongous(); 491 } 492 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 493 WB_END 494 495 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 496 if (UseG1GC) { 497 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 498 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 499 return hr->is_free(); 500 } 501 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 502 WB_END 503 504 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 505 if (UseG1GC) { 506 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 507 size_t nr = g1h->max_regions(); 508 return (jlong)nr; 509 } 510 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 511 WB_END 512 513 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 514 if (UseG1GC) { 515 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 516 size_t nr = g1h->num_free_regions(); 517 return (jlong)nr; 518 } 519 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 520 WB_END 521 522 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 523 if (UseG1GC) { 524 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 525 return g1h->concurrent_mark()->cm_thread()->in_progress(); 526 } 527 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 528 WB_END 529 530 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o)) 531 if (UseG1GC) { 532 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 533 G1ConcurrentMark* cm = g1h->concurrent_mark(); 534 return cm->completed_mark_cycles(); 535 } 536 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled"); 537 WB_END 538 539 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 540 if (UseG1GC) { 541 return (jint)HeapRegion::GrainBytes; 542 } 543 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 544 WB_END 545 546 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o)) 547 if (UseG1GC) { 548 return G1CollectedHeap::heap()->has_uncommittable_regions(); 549 } 550 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled"); 551 WB_END 552 553 #endif // INCLUDE_G1GC 554 555 #if INCLUDE_PARALLELGC 556 557 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 558 if (UseParallelGC) { 559 return GenAlignment; 560 } 561 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 562 WB_END 563 564 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 565 if (UseParallelGC) { 566 return GenAlignment; 567 } 568 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 569 WB_END 570 571 #endif // INCLUDE_PARALLELGC 572 573 #if INCLUDE_G1GC 574 575 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 576 if (UseG1GC) { 577 ResourceMark rm(THREAD); 578 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 579 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 580 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 581 return JNIHandles::make_local(THREAD, h()); 582 } 583 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 584 WB_END 585 586 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o)) 587 if (UseG1GC) { 588 G1NUMA* numa = G1NUMA::numa(); 589 return (jint)numa->num_active_nodes(); 590 } 591 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled"); 592 WB_END 593 594 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o)) 595 if (UseG1GC) { 596 G1NUMA* numa = G1NUMA::numa(); 597 int num_node_ids = checked_cast<int>(numa->num_active_nodes()); 598 const uint* node_ids = numa->node_ids(); 599 600 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL); 601 for (int i = 0; i < num_node_ids; i++) { 602 result->int_at_put(i, checked_cast<jint>(node_ids[i])); 603 } 604 return (jintArray) JNIHandles::make_local(THREAD, result); 605 } 606 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled"); 607 WB_END 608 609 class OldRegionsLivenessClosure: public HeapRegionClosure { 610 611 private: 612 const int _liveness; 613 size_t _total_count; 614 size_t _total_memory; 615 size_t _total_memory_to_free; 616 617 public: 618 OldRegionsLivenessClosure(int liveness) : 619 _liveness(liveness), 620 _total_count(0), 621 _total_memory(0), 622 _total_memory_to_free(0) { } 623 624 size_t total_count() { return _total_count; } 625 size_t total_memory() { return _total_memory; } 626 size_t total_memory_to_free() { return _total_memory_to_free; } 627 628 bool do_heap_region(HeapRegion* r) { 629 if (r->is_old()) { 630 size_t live = r->live_bytes(); 631 size_t size = r->used(); 632 size_t reg_size = HeapRegion::GrainBytes; 633 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 634 _total_memory += size; 635 ++_total_count; 636 if (size == reg_size) { 637 // We don't include non-full regions since they are unlikely included in mixed gc 638 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 639 _total_memory_to_free += size - live; 640 } 641 } 642 } 643 return false; 644 } 645 }; 646 647 648 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 649 if (!UseG1GC) { 650 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 651 } 652 if (liveness < 0) { 653 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 654 } 655 656 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 657 OldRegionsLivenessClosure rli(liveness); 658 g1h->heap_region_iterate(&rli); 659 660 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 661 result->long_at_put(0, rli.total_count()); 662 result->long_at_put(1, rli.total_memory()); 663 result->long_at_put(2, rli.total_memory_to_free()); 664 return (jlongArray) JNIHandles::make_local(THREAD, result); 665 WB_END 666 667 #endif // INCLUDE_G1GC 668 669 // Alloc memory using the test memory type so that we can use that to see if 670 // NMT picks it up correctly 671 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 672 jlong addr = 0; 673 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 674 return addr; 675 WB_END 676 677 // Alloc memory with pseudo call stack. The test can create pseudo malloc 678 // allocation site to stress the malloc tracking. 679 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 680 address pc = (address)(size_t)pseudo_stack; 681 NativeCallStack stack(&pc, 1); 682 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 683 WB_END 684 685 // Alloc memory with pseudo call stack and specific memory type. 686 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type)) 687 address pc = (address)(size_t)pseudo_stack; 688 NativeCallStack stack(&pc, 1); 689 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack); 690 WB_END 691 692 // Free the memory allocated by NMTAllocTest 693 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 694 os::free((void*)(uintptr_t)mem); 695 WB_END 696 697 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 698 jlong addr = 0; 699 700 addr = (jlong)(uintptr_t)os::reserve_memory(size); 701 MemTracker::record_virtual_memory_type((address)addr, mtTest); 702 703 return addr; 704 WB_END 705 706 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size)) 707 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size); 708 MemTracker::record_virtual_memory_type((address)addr, mtTest); 709 710 return addr; 711 WB_END 712 713 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 714 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 715 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 716 WB_END 717 718 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 719 os::uncommit_memory((char *)(uintptr_t)addr, size); 720 WB_END 721 722 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 723 os::release_memory((char *)(uintptr_t)addr, size); 724 WB_END 725 726 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 727 int hash_size = MallocSiteTable::hash_buckets(); 728 assert(hash_size > 0, "NMT hash_size should be > 0"); 729 return (jint)hash_size; 730 WB_END 731 732 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size)) 733 Arena* arena = new (mtTest) Arena(mtTest, Arena::Tag::tag_other, size_t(init_size)); 734 return (jlong)arena; 735 WB_END 736 737 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena)) 738 Arena* a = (Arena*)arena; 739 delete a; 740 WB_END 741 742 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size)) 743 Arena* a = (Arena*)arena; 744 a->Amalloc(size_t(size)); 745 WB_END 746 747 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 748 assert(method != nullptr, "method should not be null"); 749 ThreadToNativeFromVM ttn(thread); 750 return env->FromReflectedMethod(method); 751 } 752 753 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 754 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 755 private: 756 int _result; 757 const bool _make_not_entrant; 758 public: 759 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 760 _result(0), _make_not_entrant(make_not_entrant) { } 761 int result() const { return _result; } 762 763 void doit() { 764 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 765 if (t->has_last_Java_frame()) { 766 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) { 767 frame* f = fst.current(); 768 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 769 Deoptimization::deoptimize(t, *f); 770 if (_make_not_entrant) { 771 nmethod* nm = CodeCache::find_nmethod(f->pc()); 772 assert(nm != nullptr, "did not find nmethod"); 773 nm->make_not_entrant(); 774 } 775 ++_result; 776 } 777 } 778 } 779 } 780 } 781 }; 782 783 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 784 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 785 VMThread::execute(&op); 786 return op.result(); 787 WB_END 788 789 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth)) 790 bool result = false; 791 if (thread->has_last_Java_frame()) { 792 RegisterMap reg_map(thread, 793 RegisterMap::UpdateMap::include, 794 RegisterMap::ProcessFrames::include, 795 RegisterMap::WalkContinuation::skip); 796 javaVFrame *jvf = thread->last_java_vframe(®_map); 797 for (jint d = 0; d < depth && jvf != nullptr; d++) { 798 jvf = jvf->java_sender(); 799 } 800 result = jvf != nullptr && jvf->fr().is_deoptimized_frame(); 801 } 802 return result; 803 WB_END 804 805 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 806 DeoptimizationScope deopt_scope; 807 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope); 808 deopt_scope.deoptimize_marked(); 809 WB_END 810 811 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 812 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 813 int result = 0; 814 CHECK_JNI_EXCEPTION_(env, result); 815 816 DeoptimizationScope deopt_scope; 817 { 818 MutexLocker mu(Compile_lock); 819 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 820 if (is_osr) { 821 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh()); 822 } else { 823 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag); 824 if (mh->code() != nullptr) { 825 deopt_scope.mark(mh->code()); 826 ++result; 827 } 828 } 829 CodeCache::mark_for_deoptimization(&deopt_scope, mh()); 830 } 831 832 deopt_scope.deoptimize_marked(); 833 834 return result; 835 WB_END 836 837 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 838 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 839 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 840 MutexLocker mu(Compile_lock); 841 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 842 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 843 if (code == nullptr) { 844 return JNI_FALSE; 845 } 846 return !code->is_marked_for_deoptimization(); 847 WB_END 848 849 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) { 850 if (comp == nullptr) { 851 return true; 852 } 853 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 854 bool exclude = directive->ExcludeOption; 855 DirectivesStack::release(directive); 856 return exclude; 857 } 858 859 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) { 860 if (is_osr) { 861 return CompilationPolicy::can_be_osr_compiled(mh, level); 862 } else { 863 return CompilationPolicy::can_be_compiled(mh, level); 864 } 865 } 866 867 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 868 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) { 869 return false; 870 } 871 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 872 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 873 MutexLocker mu(Compile_lock); 874 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 875 876 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by 877 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive 878 // to exclude a compilation of 'method'. 879 if (comp_level == CompLevel_any) { 880 // Both compilers could have ExcludeOption set. Check all combinations. 881 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh); 882 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh); 883 if (excluded_c1 && excluded_c2) { 884 // Compilation of 'method' excluded by both compilers. 885 return false; 886 } 887 888 if (excluded_c1) { 889 // C1 only has ExcludeOption set: Check if compilable with C2. 890 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization); 891 } else if (excluded_c2) { 892 // C2 only has ExcludeOption set: Check if compilable with C1. 893 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple); 894 } 895 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) { 896 // Compilation of 'method' excluded by compiler used for 'comp_level'. 897 return false; 898 } 899 900 return can_be_compiled_at_level(mh, is_osr, (int)comp_level); 901 WB_END 902 903 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 904 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 905 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 906 MutexLocker mu(Compile_lock); 907 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 908 return mh->queued_for_compilation(); 909 WB_END 910 911 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 912 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) { 913 return false; // Intrinsic is not available on a non-existent compilation level. 914 } 915 jmethodID method_id, compilation_context_id; 916 method_id = reflected_method_to_jmid(thread, env, method); 917 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 918 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 919 920 DirectiveSet* directive; 921 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 922 assert(comp != nullptr, "compiler not available"); 923 if (compilation_context != nullptr) { 924 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 925 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 926 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 927 directive = DirectivesStack::getMatchingDirective(cch, comp); 928 } else { 929 // Calling with null matches default directive 930 directive = DirectivesStack::getDefaultDirective(comp); 931 } 932 bool result = comp->is_intrinsic_available(mh, directive); 933 DirectivesStack::release(directive); 934 return result; 935 WB_END 936 937 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 938 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 939 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 940 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 941 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 942 return (code != nullptr ? code->comp_level() : CompLevel_none); 943 WB_END 944 945 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 946 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 947 CHECK_JNI_EXCEPTION(env); 948 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 949 if (is_osr) { 950 mh->set_not_osr_compilable("WhiteBox", comp_level); 951 } else { 952 mh->set_not_compilable("WhiteBox", comp_level); 953 } 954 WB_END 955 956 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method)) 957 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 958 CHECK_JNI_EXCEPTION_(env, 0); 959 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 960 uint cnt = 0; 961 MethodData* mdo = mh->method_data(); 962 if (mdo != nullptr) { 963 cnt = mdo->decompile_count(); 964 } 965 return cnt; 966 WB_END 967 968 // Get the trap count of a method for a specific reason. If the trap count for 969 // that reason did overflow, this includes the overflow trap count of the method. 970 // If 'reason' is null, the sum of the traps for all reasons will be returned. 971 // This number includes the overflow trap count if the trap count for any reason 972 // did overflow. 973 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj)) 974 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 975 CHECK_JNI_EXCEPTION_(env, 0); 976 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 977 uint cnt = 0; 978 MethodData* mdo = mh->method_data(); 979 if (mdo != nullptr) { 980 ResourceMark rm(THREAD); 981 char* reason_str = (reason_obj == nullptr) ? 982 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj)); 983 bool overflow = false; 984 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) { 985 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) { 986 cnt = mdo->trap_count(reason); 987 // Count in the overflow trap count on overflow 988 if (cnt == (uint)-1) { 989 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count(); 990 } 991 break; 992 } else if (reason_str == nullptr) { 993 uint c = mdo->trap_count(reason); 994 if (c == (uint)-1) { 995 c = mdo->trap_count_limit(); 996 if (!overflow) { 997 // Count overflow trap count just once 998 overflow = true; 999 c += mdo->overflow_trap_count(); 1000 } 1001 } 1002 cnt += c; 1003 } 1004 } 1005 } 1006 return cnt; 1007 WB_END 1008 1009 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj)) 1010 if (reason_obj == nullptr && action_obj == nullptr) { 1011 return Deoptimization::total_deoptimization_count(); 1012 } 1013 ResourceMark rm(THREAD); 1014 const char *reason_str = (reason_obj == nullptr) ? 1015 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj)); 1016 const char *action_str = (action_obj == nullptr) ? 1017 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj)); 1018 1019 return Deoptimization::deoptimization_count(reason_str, action_str); 1020 WB_END 1021 1022 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 1023 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1024 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 1025 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1026 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 1027 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 1028 WB_END 1029 1030 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1031 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1032 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1033 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1034 bool result = mh->dont_inline(); 1035 mh->set_dont_inline(value == JNI_TRUE); 1036 return result; 1037 WB_END 1038 1039 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 1040 if (comp_level == CompLevel_any) { 1041 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 1042 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 1043 } else { 1044 return CompileBroker::queue_size(comp_level); 1045 } 1046 WB_END 1047 1048 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1049 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1050 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1051 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1052 bool result = mh->force_inline(); 1053 mh->set_force_inline(value == JNI_TRUE); 1054 return result; 1055 WB_END 1056 1057 #ifdef LINUX 1058 bool WhiteBox::validate_cgroup(const char* proc_cgroups, 1059 const char* proc_self_cgroup, 1060 const char* proc_self_mountinfo, 1061 u1* cg_flags) { 1062 CgroupInfo cg_infos[CG_INFO_LENGTH]; 1063 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups, 1064 proc_self_cgroup, 1065 proc_self_mountinfo, cg_flags); 1066 } 1067 #endif 1068 1069 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) { 1070 // Screen for unavailable/bad comp level or null method 1071 AbstractCompiler* comp = CompileBroker::compiler(comp_level); 1072 if (method == nullptr) { 1073 tty->print_cr("WB error: request to compile null method"); 1074 return false; 1075 } 1076 if (comp_level > CompilationPolicy::highest_compile_level()) { 1077 tty->print_cr("WB error: invalid compilation level %d", comp_level); 1078 return false; 1079 } 1080 if (comp == nullptr) { 1081 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level); 1082 return false; 1083 } 1084 1085 // Check if compilation is blocking 1086 methodHandle mh(THREAD, method); 1087 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 1088 bool is_blocking = !directive->BackgroundCompilationOption; 1089 DirectivesStack::release(directive); 1090 1091 // Compile method and check result 1092 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false); 1093 MutexLocker mu(THREAD, Compile_lock); 1094 bool is_queued = mh->queued_for_compilation(); 1095 if ((!is_blocking && is_queued) || nm != nullptr) { 1096 return true; 1097 } 1098 // Check code again because compilation may be finished before Compile_lock is acquired. 1099 if (bci == InvocationEntryBci) { 1100 nmethod* code = mh->code(); 1101 if (code != nullptr) { 1102 return true; 1103 } 1104 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) { 1105 return true; 1106 } 1107 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level); 1108 mh->print_short_name(tty); 1109 tty->cr(); 1110 if (is_blocking && is_queued) { 1111 tty->print_cr("WB error: blocking compilation is still in queue!"); 1112 } 1113 return false; 1114 } 1115 1116 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 1117 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1118 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1119 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 1120 WB_END 1121 1122 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 1123 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1124 Method* clinit = ik->class_initializer(); 1125 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) { 1126 return false; 1127 } 1128 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD); 1129 WB_END 1130 1131 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 1132 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1133 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1134 1135 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1136 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 1137 bool result = directive->PrintAssemblyOption; 1138 DirectivesStack::release(directive); 1139 1140 return result; 1141 WB_END 1142 1143 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1144 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1145 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1146 1147 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1148 1149 ResourceMark rm(THREAD); 1150 const char* error_msg = nullptr; 1151 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1152 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 1153 1154 if (m == nullptr) { 1155 assert(error_msg != nullptr, "Always have an error message"); 1156 tty->print_cr("Got error: %s", error_msg); 1157 return -1; // Pattern failed 1158 } 1159 1160 // Pattern works - now check if it matches 1161 int result; 1162 if (m->match(mh, InlineMatcher::force_inline)) { 1163 result = 2; // Force inline match 1164 } else if (m->match(mh, InlineMatcher::dont_inline)) { 1165 result = 1; // Dont inline match 1166 } else { 1167 result = 0; // No match 1168 } 1169 delete m; 1170 return result; 1171 WB_END 1172 1173 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1174 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1175 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1176 1177 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1178 1179 ResourceMark rm; 1180 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1181 1182 const char* error_msg = nullptr; 1183 1184 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false); 1185 if (m == nullptr) { 1186 assert(error_msg != nullptr, "Must have error_msg"); 1187 tty->print_cr("Got error: %s", error_msg); 1188 return -1; 1189 } 1190 1191 // Pattern works - now check if it matches 1192 int result = m->matches(mh); 1193 delete m; 1194 assert(result == 0 || result == 1, "Result out of range"); 1195 return result; 1196 WB_END 1197 1198 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method)) 1199 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1200 CHECK_JNI_EXCEPTION(env); 1201 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1202 1203 MethodData* mdo = mh->method_data(); 1204 if (mdo == nullptr) { 1205 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR); 1206 mdo = mh->method_data(); 1207 } 1208 mdo->init(); 1209 InvocationCounter* icnt = mdo->invocation_counter(); 1210 InvocationCounter* bcnt = mdo->backedge_counter(); 1211 // set i-counter according to CompilationPolicy::is_method_profiled 1212 icnt->set(Tier4MinInvocationThreshold); 1213 bcnt->set(Tier4CompileThreshold); 1214 WB_END 1215 1216 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 1217 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1218 CHECK_JNI_EXCEPTION(env); 1219 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1220 MutexLocker mu(THREAD, Compile_lock); 1221 MethodData* mdo = mh->method_data(); 1222 MethodCounters* mcs = mh->method_counters(); 1223 1224 if (mdo != nullptr) { 1225 mdo->init(); 1226 ResourceMark rm(THREAD); 1227 int arg_count = mdo->method()->size_of_parameters(); 1228 for (int i = 0; i < arg_count; i++) { 1229 mdo->set_arg_modified(i, 0); 1230 } 1231 mdo->clean_method_data(/*always_clean*/true); 1232 } 1233 1234 mh->clear_is_not_c1_compilable(); 1235 mh->clear_is_not_c2_compilable(); 1236 mh->clear_is_not_c2_osr_compilable(); 1237 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 1238 if (mcs != nullptr) { 1239 mcs->clear_counters(); 1240 } 1241 WB_END 1242 1243 template <typename T, int type_enum> 1244 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) { 1245 if (name == nullptr) { 1246 return false; 1247 } 1248 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1249 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1250 CHECK_JNI_EXCEPTION_(env, false); 1251 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name); 1252 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value); 1253 env->ReleaseStringUTFChars(name, flag_name); 1254 return (result == JVMFlag::SUCCESS); 1255 } 1256 1257 template <typename T, int type_enum> 1258 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) { 1259 if (name == nullptr) { 1260 return false; 1261 } 1262 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1263 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1264 CHECK_JNI_EXCEPTION_(env, false); 1265 JVMFlag* flag = JVMFlag::find_flag(flag_name); 1266 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL); 1267 env->ReleaseStringUTFChars(name, flag_name); 1268 return (result == JVMFlag::SUCCESS); 1269 } 1270 1271 template <typename T> 1272 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1273 ResourceMark rm(thread); 1274 jclass clazz = env->FindClass(name->as_C_string()); 1275 CHECK_JNI_EXCEPTION_(env, nullptr); 1276 jmethodID methodID = env->GetStaticMethodID(clazz, 1277 vmSymbols::valueOf_name()->as_C_string(), 1278 sig->as_C_string()); 1279 CHECK_JNI_EXCEPTION_(env, nullptr); 1280 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1281 CHECK_JNI_EXCEPTION_(env, nullptr); 1282 return result; 1283 } 1284 1285 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1286 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1287 } 1288 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1289 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1290 } 1291 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1292 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1293 } 1294 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1295 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1296 }*/ 1297 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1298 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1299 } 1300 1301 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1302 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1303 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1304 CHECK_JNI_EXCEPTION_(env, nullptr); 1305 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name); 1306 env->ReleaseStringUTFChars(name, flag_name); 1307 return result; 1308 } 1309 1310 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1311 const JVMFlag* flag = getVMFlag(thread, env, name); 1312 return (flag != nullptr) && flag->is_constant_in_binary(); 1313 WB_END 1314 1315 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name)) 1316 const JVMFlag* flag = getVMFlag(thread, env, name); 1317 return (flag != nullptr) && flag->is_default(); 1318 WB_END 1319 1320 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1321 const JVMFlag* flag = getVMFlag(thread, env, name); 1322 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker()); 1323 WB_END 1324 1325 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1326 bool result; 1327 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) { 1328 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1329 return booleanBox(thread, env, result); 1330 } 1331 return nullptr; 1332 WB_END 1333 1334 template <typename T, int type_enum> 1335 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) { 1336 T result; 1337 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) { 1338 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1339 return longBox(thread, env, result); 1340 } 1341 return nullptr; 1342 } 1343 1344 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1345 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name); 1346 WB_END 1347 1348 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1349 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name); 1350 WB_END 1351 1352 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1353 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name); 1354 WB_END 1355 1356 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1357 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name); 1358 WB_END 1359 1360 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1361 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name); 1362 WB_END 1363 1364 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1365 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name); 1366 WB_END 1367 1368 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1369 double result; 1370 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) { 1371 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1372 return doubleBox(thread, env, result); 1373 } 1374 return nullptr; 1375 WB_END 1376 1377 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1378 ccstr ccstrResult; 1379 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) { 1380 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1381 jstring result = env->NewStringUTF(ccstrResult); 1382 CHECK_JNI_EXCEPTION_(env, nullptr); 1383 return result; 1384 } 1385 return nullptr; 1386 WB_END 1387 1388 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1389 bool result = value == JNI_TRUE ? true : false; 1390 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result); 1391 WB_END 1392 1393 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1394 int result = checked_cast<int>(value); 1395 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result); 1396 WB_END 1397 1398 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1399 uint result = checked_cast<uint>(value); 1400 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result); 1401 WB_END 1402 1403 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1404 intx result = value; 1405 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result); 1406 WB_END 1407 1408 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1409 uintx result = value; 1410 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result); 1411 WB_END 1412 1413 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1414 uint64_t result = value; 1415 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result); 1416 WB_END 1417 1418 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1419 size_t result = value; 1420 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result); 1421 WB_END 1422 1423 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1424 double result = value; 1425 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result); 1426 WB_END 1427 1428 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1429 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1430 const char* ccstrValue; 1431 if (value == nullptr) { 1432 ccstrValue = nullptr; 1433 } 1434 else { 1435 ccstrValue = env->GetStringUTFChars(value, nullptr); 1436 CHECK_JNI_EXCEPTION(env); 1437 } 1438 { 1439 ccstr param = ccstrValue; 1440 ThreadInVMfromNative ttvfn(thread); // back to VM 1441 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) { 1442 assert(param == nullptr, "old value is freed automatically and not returned"); 1443 } 1444 } 1445 if (value != nullptr) { 1446 env->ReleaseStringUTFChars(value, ccstrValue); 1447 } 1448 WB_END 1449 1450 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1451 WhiteBox::compilation_locked = true; 1452 WB_END 1453 1454 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1455 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1456 WhiteBox::compilation_locked = false; 1457 mo.notify_all(); 1458 WB_END 1459 1460 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1461 ResourceMark rm(THREAD); 1462 int len; 1463 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1464 return (StringTable::lookup(name, len) != nullptr); 1465 WB_END 1466 1467 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1468 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1469 Universe::heap()->collect(GCCause::_wb_full_gc); 1470 #if INCLUDE_G1GC || INCLUDE_SERIALGC 1471 if (UseG1GC || UseSerialGC) { 1472 // Needs to be cleared explicitly for G1 and Serial GC. 1473 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1474 } 1475 #endif // INCLUDE_G1GC || INCLUDE_SERIALGC 1476 WB_END 1477 1478 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1479 Universe::heap()->collect(GCCause::_wb_young_gc); 1480 WB_END 1481 1482 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1483 // static+volatile in order to force the read to happen 1484 // (not be eliminated by the compiler) 1485 static char c; 1486 static volatile char* p; 1487 1488 p = os::reserve_memory(os::vm_allocation_granularity()); 1489 if (p == nullptr) { 1490 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1491 } 1492 1493 c = *p; 1494 WB_END 1495 1496 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1497 const char* features = VM_Version::features_string(); 1498 ThreadToNativeFromVM ttn(thread); 1499 jstring features_string = env->NewStringUTF(features); 1500 1501 CHECK_JNI_EXCEPTION_(env, nullptr); 1502 1503 return features_string; 1504 WB_END 1505 1506 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) { 1507 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1508 return CodeCache::get_code_heap(code)->code_blob_type(); 1509 } 1510 1511 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) { 1512 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1513 return CodeCache::get_code_heap(blob_type); 1514 } 1515 1516 struct CodeBlobStub { 1517 CodeBlobStub(const CodeBlob* blob) : 1518 name(os::strdup(blob->name())), 1519 size(blob->size()), 1520 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))), 1521 address((jlong) blob) { } 1522 ~CodeBlobStub() { os::free((void*) name); } 1523 const char* const name; 1524 const jint size; 1525 const jint blob_type; 1526 const jlong address; 1527 }; 1528 1529 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1530 ResourceMark rm; 1531 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1532 CHECK_JNI_EXCEPTION_(env, nullptr); 1533 jobjectArray result = env->NewObjectArray(4, clazz, nullptr); 1534 1535 jstring name = env->NewStringUTF(cb->name); 1536 CHECK_JNI_EXCEPTION_(env, nullptr); 1537 env->SetObjectArrayElement(result, 0, name); 1538 1539 jobject obj = integerBox(thread, env, cb->size); 1540 CHECK_JNI_EXCEPTION_(env, nullptr); 1541 env->SetObjectArrayElement(result, 1, obj); 1542 1543 obj = integerBox(thread, env, cb->blob_type); 1544 CHECK_JNI_EXCEPTION_(env, nullptr); 1545 env->SetObjectArrayElement(result, 2, obj); 1546 1547 obj = longBox(thread, env, cb->address); 1548 CHECK_JNI_EXCEPTION_(env, nullptr); 1549 env->SetObjectArrayElement(result, 3, obj); 1550 1551 return result; 1552 } 1553 1554 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1555 ResourceMark rm(THREAD); 1556 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1557 CHECK_JNI_EXCEPTION_(env, nullptr); 1558 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1559 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1560 jobjectArray result = nullptr; 1561 if (code == nullptr) { 1562 return result; 1563 } 1564 int comp_level = code->comp_level(); 1565 int insts_size = code->insts_size(); 1566 1567 ThreadToNativeFromVM ttn(thread); 1568 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1569 CHECK_JNI_EXCEPTION_(env, nullptr); 1570 result = env->NewObjectArray(5, clazz, nullptr); 1571 if (result == nullptr) { 1572 return result; 1573 } 1574 1575 CodeBlobStub stub(code); 1576 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1577 CHECK_JNI_EXCEPTION_(env, nullptr); 1578 env->SetObjectArrayElement(result, 0, codeBlob); 1579 1580 jobject level = integerBox(thread, env, comp_level); 1581 CHECK_JNI_EXCEPTION_(env, nullptr); 1582 env->SetObjectArrayElement(result, 1, level); 1583 1584 jbyteArray insts = env->NewByteArray(insts_size); 1585 CHECK_JNI_EXCEPTION_(env, nullptr); 1586 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1587 env->SetObjectArrayElement(result, 2, insts); 1588 1589 jobject id = integerBox(thread, env, code->compile_id()); 1590 CHECK_JNI_EXCEPTION_(env, nullptr); 1591 env->SetObjectArrayElement(result, 3, id); 1592 1593 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1594 CHECK_JNI_EXCEPTION_(env, nullptr); 1595 env->SetObjectArrayElement(result, 4, entry_point); 1596 1597 return result; 1598 WB_END 1599 1600 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) { 1601 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1602 BufferBlob* blob; 1603 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1604 if (full_size < size) { 1605 full_size += align_up(size - full_size, oopSize); 1606 } 1607 { 1608 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1609 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1610 if (blob != nullptr) { 1611 ::new (blob) BufferBlob("WB::DummyBlob", CodeBlobKind::Buffer, full_size); 1612 } 1613 } 1614 // Track memory usage statistic after releasing CodeCache_lock 1615 MemoryService::track_code_cache_memory_usage(); 1616 return blob; 1617 } 1618 1619 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1620 if (size < 0) { 1621 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1622 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1623 } 1624 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type)); 1625 WB_END 1626 1627 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1628 if (addr == 0) { 1629 return; 1630 } 1631 BufferBlob::free((BufferBlob*) addr); 1632 WB_END 1633 1634 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1635 ResourceMark rm; 1636 GrowableArray<CodeBlobStub*> blobs; 1637 { 1638 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1639 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type)); 1640 if (heap == nullptr) { 1641 return nullptr; 1642 } 1643 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1644 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) { 1645 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1646 new (stub) CodeBlobStub(cb); 1647 blobs.append(stub); 1648 } 1649 } 1650 ThreadToNativeFromVM ttn(thread); 1651 jobjectArray result = nullptr; 1652 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1653 CHECK_JNI_EXCEPTION_(env, nullptr); 1654 result = env->NewObjectArray(blobs.length(), clazz, nullptr); 1655 CHECK_JNI_EXCEPTION_(env, nullptr); 1656 if (result == nullptr) { 1657 return result; 1658 } 1659 int i = 0; 1660 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1661 it != blobs.end(); ++it) { 1662 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1663 CHECK_JNI_EXCEPTION_(env, nullptr); 1664 env->SetObjectArrayElement(result, i, obj); 1665 CHECK_JNI_EXCEPTION_(env, nullptr); 1666 ++i; 1667 } 1668 return result; 1669 WB_END 1670 1671 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1672 return CompileBroker::get_compilation_activity_mode(); 1673 WB_END 1674 1675 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1676 if (addr == 0) { 1677 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1678 "WB_GetCodeBlob: addr is null"); 1679 } 1680 ThreadToNativeFromVM ttn(thread); 1681 CodeBlobStub stub((CodeBlob*) addr); 1682 return codeBlob2objectArray(thread, env, &stub); 1683 WB_END 1684 1685 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1686 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1687 CHECK_JNI_EXCEPTION_(env, 0); 1688 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1689 return (jlong) mh->method_data(); 1690 WB_END 1691 1692 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1693 return (jlong) thread->stack_size(); 1694 WB_END 1695 1696 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1697 return (jlong) thread->stack_overflow_state()->stack_available( 1698 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size(); 1699 WB_END 1700 1701 1702 int WhiteBox::array_bytes_to_length(size_t bytes) { 1703 return Array<u1>::bytes_to_length(bytes); 1704 } 1705 1706 /////////////// 1707 // MetaspaceTestContext and MetaspaceTestArena 1708 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit)) 1709 metaspace::MetaspaceTestContext* context = 1710 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit); 1711 return (jlong)p2i(context); 1712 WB_END 1713 1714 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1715 delete (metaspace::MetaspaceTestContext*) context; 1716 WB_END 1717 1718 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1719 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1720 context0->purge_area(); 1721 WB_END 1722 1723 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1724 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1725 context0->print_on(tty); 1726 WB_END 1727 1728 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1729 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1730 return context0->committed_words(); 1731 WB_END 1732 1733 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1734 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1735 return context0->used_words(); 1736 WB_END 1737 1738 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro)) 1739 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType; 1740 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1741 return (jlong)p2i(context0->create_arena(type)); 1742 WB_END 1743 1744 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena)) 1745 delete (metaspace::MetaspaceTestArena*) arena; 1746 WB_END 1747 1748 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size)) 1749 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena; 1750 MetaWord* p = arena0->allocate((size_t) word_size); 1751 return (jlong)p2i(p); 1752 WB_END 1753 1754 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size)) 1755 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena; 1756 arena0->deallocate((MetaWord*)p, (size_t) word_size); 1757 WB_END 1758 1759 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb)) 1760 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord; 1761 WB_END 1762 1763 ////////////// 1764 1765 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1766 if (size < 0) { 1767 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1768 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1769 } 1770 1771 oop class_loader_oop = JNIHandles::resolve(class_loader); 1772 ClassLoaderData* cld = class_loader_oop != nullptr 1773 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1774 : ClassLoaderData::the_null_class_loader_data(); 1775 1776 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1777 1778 return (jlong)(uintptr_t)metadata; 1779 WB_END 1780 1781 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1782 jstring version, jstring location, jobjectArray packages)) 1783 Handle h_module (THREAD, JNIHandles::resolve(module)); 1784 Modules::define_module(h_module, is_open, version, location, packages, CHECK); 1785 WB_END 1786 1787 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1788 Handle h_from_module (THREAD, JNIHandles::resolve(from_module)); 1789 Handle h_to_module (THREAD, JNIHandles::resolve(to_module)); 1790 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK); 1791 WB_END 1792 1793 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1794 Handle h_module (THREAD, JNIHandles::resolve(module)); 1795 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK); 1796 WB_END 1797 1798 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1799 Handle h_module (THREAD, JNIHandles::resolve(module)); 1800 Modules::add_module_exports(h_module, package, Handle(), CHECK); 1801 WB_END 1802 1803 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1804 Handle h_from_module (THREAD, JNIHandles::resolve(from_module)); 1805 Handle h_source_module (THREAD, JNIHandles::resolve(source_module)); 1806 Modules::add_reads_module(h_from_module, h_source_module, CHECK); 1807 WB_END 1808 1809 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1810 if (inc < 0) { 1811 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1812 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1813 } 1814 1815 jlong max_size_t = (jlong) ((size_t) -1); 1816 if (inc > max_size_t) { 1817 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1818 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1819 } 1820 1821 size_t new_cap_until_GC = 0; 1822 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1823 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1824 if (!success) { 1825 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1826 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1827 "due to contention with another thread"); 1828 } 1829 return (jlong) new_cap_until_GC; 1830 WB_END 1831 1832 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1833 return (jlong) MetaspaceGC::capacity_until_GC(); 1834 WB_END 1835 1836 // The function is only valid when CDS is available. 1837 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb)) 1838 #if INCLUDE_CDS 1839 return (jlong)MetaspaceShared::core_region_alignment(); 1840 #else 1841 ShouldNotReachHere(); 1842 return 0L; 1843 #endif 1844 WB_END 1845 1846 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1847 oop obj_oop = JNIHandles::resolve(obj); 1848 return (jboolean) obj_oop->mark().has_monitor(); 1849 WB_END 1850 1851 WB_ENTRY(jint, WB_getLockStackCapacity(JNIEnv* env)) 1852 return (jint) LockStack::CAPACITY; 1853 WB_END 1854 1855 WB_ENTRY(jboolean, WB_supportsRecursiveLightweightLocking(JNIEnv* env)) 1856 return (jboolean) VM_Version::supports_recursive_lightweight_locking(); 1857 WB_END 1858 1859 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb)) 1860 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors"); 1861 return ObjectSynchronizer::request_deflate_idle_monitors_from_wb(); 1862 WB_END 1863 1864 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1865 VM_ForceSafepoint force_safepoint_op; 1866 VMThread::execute(&force_safepoint_op); 1867 WB_END 1868 1869 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb)) 1870 nullStream dev_null; 1871 ClassLoaderStatsVMOperation force_op(&dev_null); 1872 VMThread::execute(&force_op); 1873 WB_END 1874 1875 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1876 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1877 return (jlong) ik->constants(); 1878 WB_END 1879 1880 WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass)) 1881 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1882 objArrayOop resolved_refs= ik->constants()->resolved_references(); 1883 return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs); 1884 WB_END 1885 1886 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1887 return ConstantPool::encode_invokedynamic_index(index); 1888 WB_END 1889 1890 WB_ENTRY(jint, WB_getFieldEntriesLength(JNIEnv* env, jobject wb, jclass klass)) 1891 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1892 ConstantPool* cp = ik->constants(); 1893 if (cp->cache() == nullptr) { 1894 return -1; 1895 } 1896 return cp->resolved_field_entries_length(); 1897 WB_END 1898 1899 WB_ENTRY(jint, WB_getFieldCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index)) 1900 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1901 ConstantPool* cp = ik->constants(); 1902 if (cp->cache() == nullptr) { 1903 return -1; 1904 } 1905 return cp->resolved_field_entry_at(index)->constant_pool_index(); 1906 WB_END 1907 1908 WB_ENTRY(jint, WB_getMethodEntriesLength(JNIEnv* env, jobject wb, jclass klass)) 1909 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1910 ConstantPool* cp = ik->constants(); 1911 if (cp->cache() == nullptr) { 1912 return -1; 1913 } 1914 return cp->resolved_method_entries_length(); 1915 WB_END 1916 1917 WB_ENTRY(jint, WB_getMethodCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index)) 1918 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1919 ConstantPool* cp = ik->constants(); 1920 if (cp->cache() == nullptr) { 1921 return -1; 1922 } 1923 return cp->resolved_method_entry_at(index)->constant_pool_index(); 1924 WB_END 1925 1926 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass)) 1927 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1928 ConstantPool* cp = ik->constants(); 1929 if (cp->cache() == nullptr) { 1930 return -1; 1931 } 1932 return cp->resolved_indy_entries_length(); 1933 WB_END 1934 1935 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index)) 1936 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1937 ConstantPool* cp = ik->constants(); 1938 if (cp->cache() == nullptr) { 1939 return -1; 1940 } 1941 return cp->resolved_indy_entry_at(index)->constant_pool_index(); 1942 WB_END 1943 1944 WB_ENTRY(jobject, WB_printClasses(JNIEnv* env, jobject wb, jstring class_name_pattern, jint flags)) 1945 ThreadToNativeFromVM ttnfv(thread); 1946 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr); 1947 ResourceMark rm; 1948 stringStream st; 1949 { 1950 ThreadInVMfromNative ttvfn(thread); // back to VM 1951 ClassPrinter::print_classes(c, flags, &st); 1952 } 1953 jstring result = env->NewStringUTF(st.freeze()); 1954 CHECK_JNI_EXCEPTION_(env, nullptr); 1955 return result; 1956 WB_END 1957 1958 WB_ENTRY(jobject, WB_printMethods(JNIEnv* env, jobject wb, jstring class_name_pattern, jstring method_pattern, jint flags)) 1959 ThreadToNativeFromVM ttnfv(thread); 1960 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr); 1961 const char* m = env->GetStringUTFChars(method_pattern, nullptr); 1962 ResourceMark rm; 1963 stringStream st; 1964 { 1965 ThreadInVMfromNative ttvfn(thread); // back to VM 1966 ClassPrinter::print_methods(c, m, flags, &st); 1967 } 1968 jstring result = env->NewStringUTF(st.freeze()); 1969 CHECK_JNI_EXCEPTION_(env, nullptr); 1970 return result; 1971 WB_END 1972 1973 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1974 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1975 VMThread::execute(&clear_ics); 1976 WB_END 1977 1978 template <typename T> 1979 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1980 assert(value != nullptr, "sanity"); 1981 if (method == nullptr || name == nullptr) { 1982 return false; 1983 } 1984 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1985 CHECK_JNI_EXCEPTION_(env, false); 1986 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1987 // can't be in VM when we call JNI 1988 ThreadToNativeFromVM ttnfv(thread); 1989 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1990 CHECK_JNI_EXCEPTION_(env, false); 1991 enum CompileCommand option = CompilerOracle::string_to_option(flag_name); 1992 env->ReleaseStringUTFChars(name, flag_name); 1993 if (option == CompileCommand::Unknown) { 1994 return false; 1995 } 1996 if (!CompilerOracle::option_matches_type(option, *value)) { 1997 return false; 1998 } 1999 return CompilerOracle::has_option_value(mh, option, *value); 2000 } 2001 2002 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2003 bool result; 2004 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 2005 // can't be in VM when we call JNI 2006 ThreadToNativeFromVM ttnfv(thread); 2007 return booleanBox(thread, env, result); 2008 } 2009 return nullptr; 2010 WB_END 2011 2012 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2013 intx result; 2014 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 2015 // can't be in VM when we call JNI 2016 ThreadToNativeFromVM ttnfv(thread); 2017 return longBox(thread, env, result); 2018 } 2019 return nullptr; 2020 WB_END 2021 2022 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2023 uintx result; 2024 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 2025 // can't be in VM when we call JNI 2026 ThreadToNativeFromVM ttnfv(thread); 2027 return longBox(thread, env, result); 2028 } 2029 return nullptr; 2030 WB_END 2031 2032 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2033 double result; 2034 if (GetMethodOption <double> (thread, env, method, name, &result)) { 2035 // can't be in VM when we call JNI 2036 ThreadToNativeFromVM ttnfv(thread); 2037 return doubleBox(thread, env, result); 2038 } 2039 return nullptr; 2040 WB_END 2041 2042 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2043 ccstr ccstrResult; 2044 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 2045 // can't be in VM when we call JNI 2046 ThreadToNativeFromVM ttnfv(thread); 2047 jstring result = env->NewStringUTF(ccstrResult); 2048 CHECK_JNI_EXCEPTION_(env, nullptr); 2049 return result; 2050 } 2051 return nullptr; 2052 WB_END 2053 2054 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb)) 2055 const char* p = CDSConfig::default_archive_path(); 2056 ThreadToNativeFromVM ttn(thread); 2057 jstring path_string = env->NewStringUTF(p); 2058 2059 CHECK_JNI_EXCEPTION_(env, nullptr); 2060 2061 return path_string; 2062 WB_END 2063 2064 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb)) 2065 return UseSharedSpaces; 2066 WB_END 2067 2068 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb)) 2069 #if INCLUDE_CDS 2070 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION; 2071 #else 2072 ShouldNotReachHere(); 2073 return (jint)-1; 2074 #endif 2075 WB_END 2076 2077 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb)) 2078 #if INCLUDE_CDS 2079 return (jint)CURRENT_CDS_ARCHIVE_VERSION; 2080 #else 2081 ShouldNotReachHere(); 2082 return (jint)-1; 2083 #endif 2084 WB_END 2085 2086 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb)) 2087 return FileMapInfo::memory_mapping_failed(); 2088 WB_END 2089 2090 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str)) 2091 ResourceMark rm(THREAD); 2092 oop str_oop = JNIHandles::resolve(str); 2093 int length; 2094 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false)); 2095 return StringTable::lookup_shared(chars, length) == str_oop; 2096 WB_END 2097 2098 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 2099 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2100 WB_END 2101 2102 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env)) 2103 return ArchiveHeapLoader::is_mapped(); 2104 WB_END 2105 2106 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz)) 2107 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 2108 if (!k->is_instance_klass()) { 2109 return; 2110 } 2111 InstanceKlass *ik = InstanceKlass::cast(k); 2112 ik->link_class(THREAD); // may throw verification error 2113 WB_END 2114 2115 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 2116 return ArchiveHeapLoader::is_mapped(); 2117 WB_END 2118 2119 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env)) 2120 #if INCLUDE_CDS 2121 return true; 2122 #else 2123 return false; 2124 #endif // INCLUDE_CDS 2125 WB_END 2126 2127 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env)) 2128 #if COMPILER2_OR_JVMCI 2129 return true; 2130 #else 2131 return false; 2132 #endif 2133 WB_END 2134 2135 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env)) 2136 #if INCLUDE_JVMCI 2137 return JVMCIGlobals::gc_supports_jvmci(); 2138 #else 2139 return false; 2140 #endif 2141 WB_END 2142 2143 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env)) 2144 return HeapShared::can_write(); 2145 WB_END 2146 2147 2148 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env)) 2149 #if INCLUDE_JFR 2150 return true; 2151 #else 2152 return false; 2153 #endif // INCLUDE_JFR 2154 WB_END 2155 2156 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env)) 2157 #if defined(DTRACE_ENABLED) 2158 return true; 2159 #else 2160 return false; 2161 #endif // DTRACE_ENABLED 2162 WB_END 2163 2164 #if INCLUDE_CDS 2165 2166 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name)) 2167 ResourceMark rm; 2168 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 2169 jint result = (jint)CDSConstants::get_cds_offset(c_name); 2170 return result; 2171 WB_END 2172 2173 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name)) 2174 ResourceMark rm; 2175 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 2176 jint result = (jint)CDSConstants::get_cds_constant(c_name); 2177 return result; 2178 WB_END 2179 2180 #endif // INCLUDE_CDS 2181 2182 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle)) 2183 class ReadMonitorsClosure : public HandshakeClosure { 2184 jboolean _executed; 2185 2186 void do_thread(Thread* th) { 2187 JavaThread* jt = JavaThread::cast(th); 2188 ResourceMark rm; 2189 2190 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>(); 2191 2192 if (!jt->has_last_Java_frame()) { 2193 return; 2194 } 2195 RegisterMap rmap(jt, 2196 RegisterMap::UpdateMap::include, 2197 RegisterMap::ProcessFrames::include, 2198 RegisterMap::WalkContinuation::skip); 2199 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) { 2200 GrowableArray<MonitorInfo*> *monitors = vf->monitors(); 2201 if (monitors != nullptr) { 2202 int len = monitors->length(); 2203 // Walk monitors youngest to oldest 2204 for (int i = len - 1; i >= 0; i--) { 2205 MonitorInfo* mon_info = monitors->at(i); 2206 if (mon_info->eliminated()) continue; 2207 oop owner = mon_info->owner(); 2208 if (owner != nullptr) { 2209 info->append(mon_info); 2210 } 2211 } 2212 } 2213 } 2214 _executed = true; 2215 } 2216 2217 public: 2218 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {} 2219 jboolean executed() const { return _executed; } 2220 }; 2221 2222 ReadMonitorsClosure rmc; 2223 if (thread_handle != nullptr) { 2224 ThreadsListHandle tlh; 2225 JavaThread* target = nullptr; 2226 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2227 if (is_alive) { 2228 Handshake::execute(&rmc, &tlh, target); 2229 } 2230 } 2231 return rmc.executed(); 2232 WB_END 2233 2234 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 2235 class TraceSelfClosure : public HandshakeClosure { 2236 jint _num_threads_completed; 2237 2238 void do_thread(Thread* th) { 2239 JavaThread* jt = JavaThread::cast(th); 2240 ResourceMark rm; 2241 2242 jt->print_on(tty); 2243 jt->print_stack_on(tty); 2244 tty->cr(); 2245 Atomic::inc(&_num_threads_completed); 2246 } 2247 2248 public: 2249 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {} 2250 2251 jint num_threads_completed() const { return _num_threads_completed; } 2252 }; 2253 TraceSelfClosure tsc(Thread::current()); 2254 2255 if (all_threads) { 2256 Handshake::execute(&tsc); 2257 } else if (thread_handle != nullptr) { 2258 ThreadsListHandle tlh; 2259 JavaThread* target = nullptr; 2260 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2261 if (is_alive) { 2262 Handshake::execute(&tsc, &tlh, target); 2263 } 2264 } 2265 return tsc.num_threads_completed(); 2266 WB_END 2267 2268 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle)) 2269 class TraceSelfClosure : public AsyncHandshakeClosure { 2270 JavaThread* _self; 2271 void do_thread(Thread* th) { 2272 assert(th->is_Java_thread(), "sanity"); 2273 // AsynchHandshake handshakes are only executed by target. 2274 assert(_self == th, "Must be"); 2275 assert(Thread::current() == th, "Must be"); 2276 JavaThread* jt = JavaThread::cast(th); 2277 ResourceMark rm; 2278 jt->print_on(tty); 2279 jt->print_stack_on(tty); 2280 tty->cr(); 2281 } 2282 2283 public: 2284 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {} 2285 }; 2286 if (thread_handle != nullptr) { 2287 ThreadsListHandle tlh; 2288 JavaThread* target = nullptr; 2289 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2290 if (is_alive) { 2291 TraceSelfClosure* tsc = new TraceSelfClosure(target); 2292 Handshake::execute(tsc, target); 2293 } 2294 } 2295 WB_END 2296 2297 static volatile int _emulated_lock = 0; 2298 2299 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender)) 2300 JavaThread* self = JavaThread::current(); 2301 2302 { 2303 // Before trying to acquire the lock transition into a safepoint safe state. 2304 // Otherwise if either suspender or suspendee blocks for a safepoint 2305 // in ~ThreadBlockInVM the other one could loop forever trying to acquire 2306 // the lock without allowing the safepoint to progress. 2307 ThreadBlockInVM tbivm(self); 2308 2309 // We will deadlock here if we are 'suspender' and 'suspendee' 2310 // suspended in ~ThreadBlockInVM. This verifies we only suspend 2311 // at the right place. 2312 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {} 2313 assert(_emulated_lock == 1, "Must be locked"); 2314 2315 // Sleep much longer in suspendee to force situation where 2316 // 'suspender' is waiting above to acquire lock. 2317 os::naked_short_sleep(suspender ? 1 : 10); 2318 } 2319 Atomic::store(&_emulated_lock, 0); 2320 WB_END 2321 2322 // Some convenience methods to deal with objects from java 2323 int WhiteBox::offset_for_field(const char* field_name, oop object, 2324 Symbol* signature_symbol) { 2325 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid"); 2326 2327 //Get the class of our object 2328 Klass* arg_klass = object->klass(); 2329 //Turn it into an instance-klass 2330 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 2331 2332 //Create symbols to look for in the class 2333 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name); 2334 2335 //To be filled in with an offset of the field we're looking for 2336 fieldDescriptor fd; 2337 2338 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 2339 if (res == nullptr) { 2340 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 2341 name_symbol->as_C_string()); 2342 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 2343 } 2344 2345 //fetch the field at the offset we've found 2346 int dest_offset = fd.offset(); 2347 2348 return dest_offset; 2349 } 2350 2351 2352 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 2353 int offset = offset_for_field(field_name, object, 2354 vmSymbols::string_signature()); 2355 oop string = object->obj_field(offset); 2356 if (string == nullptr) { 2357 return nullptr; 2358 } 2359 const char* ret = java_lang_String::as_utf8_string(string); 2360 return ret; 2361 } 2362 2363 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 2364 int offset = 2365 offset_for_field(field_name, object, vmSymbols::bool_signature()); 2366 bool ret = (object->bool_field(offset) == JNI_TRUE); 2367 return ret; 2368 } 2369 2370 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 2371 ResourceMark rm; 2372 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass)); 2373 const char* klass_name = klass->external_name(); 2374 2375 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 2376 2377 // one by one registration natives for exception catching 2378 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 2379 CHECK_JNI_EXCEPTION(env); 2380 for (int i = 0, n = method_count; i < n; ++i) { 2381 // Skip dummy entries 2382 if (method_array[i].fnPtr == nullptr) continue; 2383 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 2384 jthrowable throwable_obj = env->ExceptionOccurred(); 2385 if (throwable_obj != nullptr) { 2386 env->ExceptionClear(); 2387 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 2388 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 2389 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 2390 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s", 2391 klass_name, method_array[i].name, method_array[i].signature); 2392 } 2393 } else { 2394 // Registration failed unexpectedly. 2395 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered", 2396 klass_name, method_array[i].name, method_array[i].signature); 2397 env->UnregisterNatives(wbclass); 2398 break; 2399 } 2400 } 2401 } 2402 } 2403 2404 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 2405 // can't be in VM when we call JNI 2406 ThreadToNativeFromVM ttnfv(thread); 2407 const char* dir = env->GetStringUTFChars(compDirect, nullptr); 2408 CHECK_JNI_EXCEPTION_(env, 0); 2409 int ret; 2410 { 2411 ThreadInVMfromNative ttvfn(thread); // back to VM 2412 ret = DirectivesParser::parse_string(dir, tty); 2413 } 2414 env->ReleaseStringUTFChars(compDirect, dir); 2415 // -1 for error parsing directive. Return 0 as number of directives added. 2416 if (ret == -1) { 2417 ret = 0; 2418 } 2419 return (jint) ret; 2420 WB_END 2421 2422 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 2423 DirectivesStack::pop(count); 2424 WB_END 2425 2426 // Checks that the library libfile has the noexecstack bit set. 2427 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 2428 jboolean ret = false; 2429 #ifdef LINUX 2430 // Can't be in VM when we call JNI. 2431 ThreadToNativeFromVM ttnfv(thread); 2432 const char* lf = env->GetStringUTFChars(libfile, nullptr); 2433 CHECK_JNI_EXCEPTION_(env, 0); 2434 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 2435 env->ReleaseStringUTFChars(libfile, lf); 2436 #endif 2437 return ret; 2438 WB_END 2439 2440 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 2441 LINUX_ONLY(return OSContainer::is_containerized();) 2442 return false; 2443 WB_END 2444 2445 // Physical memory of the host machine (including containers) 2446 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o)) 2447 LINUX_ONLY(return os::Linux::physical_memory();) 2448 return os::physical_memory(); 2449 WB_END 2450 2451 // Physical swap of the host machine (including containers), Linux only. 2452 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o)) 2453 LINUX_ONLY(return (jlong)os::Linux::host_swap();) 2454 return -1; // Not used/implemented on other platforms 2455 WB_END 2456 2457 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env, 2458 jobject o, 2459 jstring proc_cgroups, 2460 jstring proc_self_cgroup, 2461 jstring proc_self_mountinfo)) 2462 jint ret = 0; 2463 #ifdef LINUX 2464 ThreadToNativeFromVM ttnfv(thread); 2465 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, nullptr); 2466 CHECK_JNI_EXCEPTION_(env, 0); 2467 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr); 2468 CHECK_JNI_EXCEPTION_(env, 0); 2469 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr); 2470 CHECK_JNI_EXCEPTION_(env, 0); 2471 u1 cg_type_flags = 0; 2472 // This sets cg_type_flags 2473 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags); 2474 ret = (jint)cg_type_flags; 2475 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups); 2476 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup); 2477 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo); 2478 #endif 2479 return ret; 2480 WB_END 2481 2482 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 2483 os::print_os_info(tty); 2484 WB_END 2485 2486 // Elf decoder 2487 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 2488 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 2489 ElfFile::_do_not_cache_elf_section = true; 2490 #endif 2491 WB_END 2492 2493 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o)) 2494 return (jlong) ResolvedMethodTable::items_count(); 2495 WB_END 2496 2497 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o)) 2498 return (jint) ProtectionDomainCacheTable::removed_entries_count(); 2499 WB_END 2500 2501 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror)) 2502 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror)); 2503 // Return size in bytes. 2504 return k->size() * wordSize; 2505 WB_END 2506 2507 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java. 2508 // It explains how the thread's priority field is used for test state coordination. 2509 // 2510 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle)) 2511 oop target_oop = JNIHandles::resolve_non_null(target_handle); 2512 jlong tid = java_lang_Thread::thread_id(target_oop); 2513 JavaThread* target = java_lang_Thread::thread(target_oop); 2514 2515 // Grab a ThreadsListHandle to protect the target thread whilst terminating 2516 ThreadsListHandle tlh; 2517 2518 // Look up the target thread by tid to ensure it is present 2519 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid); 2520 if (t == nullptr) { 2521 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!"); 2522 } 2523 2524 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected"); 2525 // Allow target to terminate by boosting priority 2526 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1)); 2527 2528 // Now wait for the target to terminate 2529 while (!target->is_terminated()) { 2530 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint 2531 os::naked_short_sleep(0); 2532 } 2533 2534 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated"); 2535 2536 // Now release the GC inducing thread - we have to re-resolve the external oop that 2537 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now. 2538 oop original = JNIHandles::resolve_non_null(target_handle); 2539 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2)); 2540 2541 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:"); 2542 2543 // The Java code should be creating garbage and triggering GC, which would potentially move 2544 // the threadObj oop. If the exiting thread is properly protected then its threadObj should 2545 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to 2546 // kick in. 2547 for (int i = 0; i < 5; i++) { 2548 oop original = JNIHandles::resolve_non_null(target_handle); 2549 oop current = t->threadObj(); 2550 if (original != current) { 2551 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i); 2552 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!"); 2553 } else { 2554 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i); 2555 ThreadBlockInVM tbivm(thread); 2556 os::naked_short_sleep(50); 2557 } 2558 } 2559 WB_END 2560 2561 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map)) 2562 ResourceMark rm; // for verify 2563 stringStream st; 2564 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) { 2565 frame* current_frame = fst.current(); 2566 if (log) { 2567 current_frame->print_value_on(&st, nullptr); 2568 } 2569 current_frame->verify(fst.register_map()); 2570 } 2571 if (log) { 2572 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames"); 2573 tty->print_raw(st.freeze()); 2574 tty->print_cr("[WhiteBox::VerifyFrames] Done"); 2575 } 2576 WB_END 2577 2578 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb)) 2579 #if INCLUDE_JVMTI 2580 return JNI_TRUE; 2581 #else 2582 return JNI_FALSE; 2583 #endif 2584 WB_END 2585 2586 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time)) 2587 os::naked_short_sleep(time); 2588 WB_END 2589 2590 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o)) 2591 ThreadToNativeFromVM ttn(thread); 2592 jstring info_string = env->NewStringUTF(XSTR(LIBC)); 2593 CHECK_JNI_EXCEPTION_(env, nullptr); 2594 return info_string; 2595 WB_END 2596 2597 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb)) 2598 GCLocker::lock_critical(thread); 2599 WB_END 2600 2601 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb)) 2602 GCLocker::unlock_critical(thread); 2603 WB_END 2604 2605 WB_ENTRY(void, WB_PinObject(JNIEnv* env, jobject wb, jobject o)) 2606 #if INCLUDE_G1GC 2607 if (!UseG1GC) { 2608 ShouldNotReachHere(); 2609 return; 2610 } 2611 oop obj = JNIHandles::resolve(o); 2612 G1CollectedHeap::heap()->pin_object(thread, obj); 2613 #else 2614 ShouldNotReachHere(); 2615 #endif // INCLUDE_G1GC 2616 WB_END 2617 2618 WB_ENTRY(void, WB_UnpinObject(JNIEnv* env, jobject wb, jobject o)) 2619 #if INCLUDE_G1GC 2620 if (!UseG1GC) { 2621 ShouldNotReachHere(); 2622 return; 2623 } 2624 oop obj = JNIHandles::resolve(o); 2625 G1CollectedHeap::heap()->unpin_object(thread, obj); 2626 #else 2627 ShouldNotReachHere(); 2628 #endif // INCLUDE_G1GC 2629 WB_END 2630 2631 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable)) 2632 if (!Continuations::enabled()) { 2633 tty->print_cr("WB error: must be Continuations::enabled()!"); 2634 return JNI_FALSE; 2635 } 2636 jboolean result = false; 2637 #if INCLUDE_JVMTI 2638 if (enable) { 2639 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti(); 2640 } else { 2641 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti(); 2642 } 2643 #endif 2644 return result; 2645 WB_END 2646 2647 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size)) 2648 void* const from = (void*)addr; 2649 void* const to = (void*)(addr + size); 2650 if (from > to) { 2651 os::pretouch_memory(from, to, os::vm_page_size()); 2652 } 2653 WB_END 2654 2655 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target)) 2656 ClassLoaderDataGraph::safepoint_and_clean_metaspaces(); 2657 WB_END 2658 2659 #define CC (char*) 2660 2661 static JNINativeMethod methods[] = { 2662 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 2663 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 2664 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 2665 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 2666 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 2667 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 2668 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 2669 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 2670 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 2671 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses }, 2672 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount }, 2673 {CC"parseCommandLine0", 2674 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;", 2675 (void*) &WB_ParseCommandLine 2676 }, 2677 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2678 (void*)&WB_AddToBootstrapClassLoaderSearch}, 2679 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2680 (void*)&WB_AddToSystemClassLoaderSearch}, 2681 {CC"getCompressedOopsMaxHeapSize", CC"()J", 2682 (void*)&WB_GetCompressedOopsMaxHeapSize}, 2683 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 2684 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 2685 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 2686 #if INCLUDE_CDS 2687 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName}, 2688 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName}, 2689 #endif 2690 #if INCLUDE_G1GC 2691 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 2692 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles}, 2693 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 2694 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 2695 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 2696 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 2697 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 2698 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 2699 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit}, 2700 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 2701 (void*)&WB_G1AuxiliaryMemoryUsage }, 2702 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount }, 2703 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds }, 2704 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 2705 #endif // INCLUDE_G1GC 2706 #if INCLUDE_PARALLELGC 2707 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 2708 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 2709 #endif 2710 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 2711 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 2712 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType}, 2713 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 2714 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 2715 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 2716 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 2717 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 2718 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 2719 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 2720 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena }, 2721 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena }, 2722 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc }, 2723 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 2724 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized}, 2725 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 2726 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 2727 (void*)&WB_DeoptimizeMethod }, 2728 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 2729 (void*)&WB_IsMethodCompiled }, 2730 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 2731 (void*)&WB_IsMethodCompilable}, 2732 {CC"isMethodQueuedForCompilation0", 2733 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 2734 {CC"isIntrinsicAvailable0", 2735 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2736 (void*)&WB_IsIntrinsicAvailable}, 2737 {CC"makeMethodNotCompilable0", 2738 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2739 {CC"testSetDontInlineMethod0", 2740 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2741 {CC"getMethodCompilationLevel0", 2742 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2743 {CC"getMethodDecompileCount0", 2744 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount}, 2745 {CC"getMethodTrapCount0", 2746 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2747 (void*)&WB_GetMethodTrapCount}, 2748 {CC"getDeoptCount0", 2749 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount}, 2750 {CC"getMethodEntryBci0", 2751 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2752 {CC"getCompileQueueSize", 2753 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2754 {CC"testSetForceInlineMethod0", 2755 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2756 {CC"enqueueMethodForCompilation0", 2757 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2758 {CC"enqueueInitializerForCompilation0", 2759 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2760 {CC"markMethodProfiled", 2761 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled}, 2762 {CC"clearMethodState0", 2763 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2764 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2765 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2766 {CC"matchesMethod", 2767 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2768 (void*)&WB_MatchesMethod}, 2769 {CC"matchesInline", 2770 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2771 (void*)&WB_MatchesInline}, 2772 {CC"shouldPrintAssembly", 2773 CC"(Ljava/lang/reflect/Executable;I)Z", 2774 (void*)&WB_ShouldPrintAssembly}, 2775 2776 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2777 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag}, 2778 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2779 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2780 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2781 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2782 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2783 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2784 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2785 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2786 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2787 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2788 (void*)&WB_SetStringVMFlag}, 2789 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2790 (void*)&WB_GetBooleanVMFlag}, 2791 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2792 (void*)&WB_GetIntVMFlag}, 2793 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2794 (void*)&WB_GetUintVMFlag}, 2795 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2796 (void*)&WB_GetIntxVMFlag}, 2797 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2798 (void*)&WB_GetUintxVMFlag}, 2799 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2800 (void*)&WB_GetUint64VMFlag}, 2801 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2802 (void*)&WB_GetSizeTVMFlag}, 2803 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2804 (void*)&WB_GetDoubleVMFlag}, 2805 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2806 (void*)&WB_GetStringVMFlag}, 2807 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2808 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2809 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2810 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2811 {CC"allocateMetaspace", 2812 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2813 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2814 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2815 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment }, 2816 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2817 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2818 (void*)&WB_GetNMethod }, 2819 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2820 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2821 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2822 {CC"getCompilationActivityMode", 2823 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2824 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2825 (void*)&WB_GetMethodData }, 2826 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2827 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2828 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2829 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2830 (void*)&WB_DefineModule }, 2831 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2832 (void*)&WB_AddModuleExports }, 2833 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2834 (void*)&WB_AddReadsModule }, 2835 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2836 (void*)&WB_AddModuleExportsToAllUnnamed }, 2837 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2838 (void*)&WB_AddModuleExportsToAll }, 2839 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors }, 2840 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2841 {CC"getLockStackCapacity", CC"()I", (void*)&WB_getLockStackCapacity }, 2842 {CC"supportsRecursiveLightweightLocking", CC"()Z", (void*)&WB_supportsRecursiveLightweightLocking }, 2843 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2844 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint }, 2845 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2846 {CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 2847 {CC"encodeConstantPoolIndyIndex0", 2848 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 2849 {CC"getFieldEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getFieldEntriesLength}, 2850 {CC"getFieldCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getFieldCPIndex}, 2851 {CC"getMethodEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getMethodEntriesLength}, 2852 {CC"getMethodCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getMethodCPIndex}, 2853 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength}, 2854 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex}, 2855 {CC"printClasses0", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printClasses}, 2856 {CC"printMethods0", CC"(Ljava/lang/String;Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printMethods}, 2857 {CC"getMethodBooleanOption", 2858 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2859 (void*)&WB_GetMethodBooleaneOption}, 2860 {CC"getMethodIntxOption", 2861 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2862 (void*)&WB_GetMethodIntxOption}, 2863 {CC"getMethodUintxOption", 2864 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2865 (void*)&WB_GetMethodUintxOption}, 2866 {CC"getMethodDoubleOption", 2867 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2868 (void*)&WB_GetMethodDoubleOption}, 2869 {CC"getMethodStringOption", 2870 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2871 (void*)&WB_GetMethodStringOption}, 2872 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;", 2873 (void*)&WB_GetDefaultArchivePath}, 2874 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion}, 2875 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion}, 2876 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled}, 2877 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString }, 2878 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2879 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped }, 2880 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass}, 2881 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2882 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded }, 2883 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded }, 2884 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded }, 2885 {CC"hasLibgraal", CC"()Z", (void*)&WB_HasLibgraal }, 2886 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded }, 2887 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC}, 2888 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive }, 2889 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed }, 2890 2891 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2892 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors }, 2893 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2894 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack }, 2895 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock}, 2896 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread }, 2897 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames }, 2898 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2899 (void*)&WB_AddCompilerDirective }, 2900 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2901 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported}, 2902 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler}, 2903 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected}, 2904 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically}, 2905 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints}, 2906 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl}, 2907 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl}, 2908 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle}, 2909 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z", 2910 (void*)&WB_ConcurrentGCRunTo}, 2911 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2912 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2913 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2914 {CC"validateCgroup", 2915 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I", 2916 (void*)&WB_ValidateCgroup }, 2917 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory }, 2918 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap }, 2919 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2920 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 2921 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount }, 2922 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount }, 2923 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize}, 2924 2925 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext}, 2926 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext}, 2927 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext}, 2928 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext}, 2929 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext}, 2930 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext}, 2931 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext}, 2932 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena}, 2933 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena}, 2934 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena}, 2935 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize}, 2936 2937 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded}, 2938 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe}, 2939 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName}, 2940 2941 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical}, 2942 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical}, 2943 {CC"pinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_PinObject}, 2944 {CC"unpinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_UnpinObject}, 2945 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode}, 2946 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory}, 2947 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces}, 2948 }; 2949 2950 2951 #undef CC 2952 2953 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2954 { 2955 if (WhiteBoxAPI) { 2956 // Make sure that wbclass is loaded by the null classloader 2957 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass))); 2958 Handle loader(THREAD, ik->class_loader()); 2959 if (loader.is_null()) { 2960 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2961 WhiteBox::set_used(); 2962 } 2963 } 2964 } 2965 JVM_END