1 /* 2 * Copyright (c) 2012, 2022, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "cds.h" 27 #include "cds/archiveHeapLoader.hpp" 28 #include "cds/cdsConstants.hpp" 29 #include "cds/filemap.hpp" 30 #include "cds/heapShared.hpp" 31 #include "cds/metaspaceShared.hpp" 32 #include "classfile/classLoaderDataGraph.hpp" 33 #include "classfile/classLoaderStats.hpp" 34 #include "classfile/javaClasses.inline.hpp" 35 #include "classfile/modules.hpp" 36 #include "classfile/protectionDomainCache.hpp" 37 #include "classfile/stringTable.hpp" 38 #include "classfile/symbolTable.hpp" 39 #include "classfile/systemDictionary.hpp" 40 #include "classfile/vmSymbols.hpp" 41 #include "code/codeCache.hpp" 42 #include "compiler/compilationPolicy.hpp" 43 #include "compiler/directivesParser.hpp" 44 #include "compiler/methodMatcher.hpp" 45 #include "gc/shared/concurrentGCBreakpoints.hpp" 46 #include "gc/shared/gcConfig.hpp" 47 #include "gc/shared/gcLocker.inline.hpp" 48 #include "gc/shared/genArguments.hpp" 49 #include "gc/shared/genCollectedHeap.hpp" 50 #include "jvmtifiles/jvmtiEnv.hpp" 51 #include "logging/log.hpp" 52 #include "memory/iterator.hpp" 53 #include "memory/metadataFactory.hpp" 54 #include "memory/iterator.inline.hpp" 55 #include "memory/metaspace/testHelpers.hpp" 56 #include "memory/metaspaceUtils.hpp" 57 #include "memory/oopFactory.hpp" 58 #include "memory/resourceArea.hpp" 59 #include "memory/universe.hpp" 60 #include "oops/array.hpp" 61 #include "oops/compressedOops.hpp" 62 #include "oops/compressedOops.inline.hpp" 63 #include "oops/constantPool.inline.hpp" 64 #include "oops/klass.inline.hpp" 65 #include "oops/method.inline.hpp" 66 #include "oops/objArrayKlass.hpp" 67 #include "oops/objArrayOop.inline.hpp" 68 #include "oops/oop.inline.hpp" 69 #include "oops/objArrayOop.inline.hpp" 70 #include "oops/typeArrayOop.inline.hpp" 71 #include "prims/resolvedMethodTable.hpp" 72 #include "prims/wbtestmethods/parserTests.hpp" 73 #include "prims/whitebox.inline.hpp" 74 #include "runtime/arguments.hpp" 75 #include "runtime/atomic.hpp" 76 #include "runtime/deoptimization.hpp" 77 #include "runtime/fieldDescriptor.inline.hpp" 78 #include "runtime/flags/jvmFlag.hpp" 79 #include "runtime/flags/jvmFlagAccess.hpp" 80 #include "runtime/frame.inline.hpp" 81 #include "runtime/handles.inline.hpp" 82 #include "runtime/handshake.hpp" 83 #include "runtime/interfaceSupport.inline.hpp" 84 #include "runtime/javaCalls.hpp" 85 #include "runtime/javaThread.inline.hpp" 86 #include "runtime/jniHandles.inline.hpp" 87 #include "runtime/os.hpp" 88 #include "runtime/stackFrameStream.inline.hpp" 89 #include "runtime/synchronizer.hpp" 90 #include "runtime/threadSMR.hpp" 91 #include "runtime/vframe.hpp" 92 #include "runtime/vm_version.hpp" 93 #include "services/mallocSiteTable.hpp" 94 #include "services/memoryService.hpp" 95 #include "services/memTracker.hpp" 96 #include "utilities/align.hpp" 97 #include "utilities/debug.hpp" 98 #include "utilities/elfFile.hpp" 99 #include "utilities/exceptions.hpp" 100 #include "utilities/macros.hpp" 101 #include "utilities/nativeCallStack.hpp" 102 #include "utilities/ostream.hpp" 103 #if INCLUDE_G1GC 104 #include "gc/g1/g1Arguments.hpp" 105 #include "gc/g1/g1CollectedHeap.inline.hpp" 106 #include "gc/g1/g1ConcurrentMark.hpp" 107 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp" 108 #include "gc/g1/heapRegionManager.hpp" 109 #include "gc/g1/heapRegionRemSet.inline.hpp" 110 #endif // INCLUDE_G1GC 111 #if INCLUDE_PARALLELGC 112 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 113 #endif // INCLUDE_PARALLELGC 114 #if INCLUDE_JVMCI 115 #include "jvmci/jvmciEnv.hpp" 116 #include "jvmci/jvmciRuntime.hpp" 117 #endif 118 #ifdef LINUX 119 #include "osContainer_linux.hpp" 120 #include "cgroupSubsystem_linux.hpp" 121 #endif 122 123 #define SIZE_T_MAX_VALUE ((size_t) -1) 124 125 #define CHECK_JNI_EXCEPTION_(env, value) \ 126 do { \ 127 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 128 THREAD->clear_pending_jni_exception_check(); \ 129 if (HAS_PENDING_EXCEPTION) { \ 130 return(value); \ 131 } \ 132 } while (0) 133 134 #define CHECK_JNI_EXCEPTION(env) \ 135 do { \ 136 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 137 THREAD->clear_pending_jni_exception_check(); \ 138 if (HAS_PENDING_EXCEPTION) { \ 139 return; \ 140 } \ 141 } while (0) 142 143 bool WhiteBox::_used = false; 144 volatile bool WhiteBox::compilation_locked = false; 145 146 class VM_WhiteBoxOperation : public VM_Operation { 147 public: 148 VM_WhiteBoxOperation() { } 149 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 150 bool allow_nested_vm_operations() const { return true; } 151 }; 152 153 154 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 155 return (jlong)(void*)JNIHandles::resolve(obj); 156 WB_END 157 158 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 159 return heapOopSize; 160 WB_END 161 162 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 163 return os::vm_page_size(); 164 WB_END 165 166 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 167 return os::vm_allocation_granularity(); 168 WB_END 169 170 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 171 return os::large_page_size(); 172 WB_END 173 174 class WBIsKlassAliveClosure : public LockedClassesDo { 175 Symbol* _name; 176 int _count; 177 public: 178 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {} 179 180 void do_klass(Klass* k) { 181 Symbol* ksym = k->name(); 182 if (ksym->fast_compare(_name) == 0) { 183 _count++; 184 } else if (k->is_instance_klass()) { 185 // Need special handling for hidden classes because the JVM 186 // appends "+<hex-address>" to hidden class names. 187 InstanceKlass *ik = InstanceKlass::cast(k); 188 if (ik->is_hidden()) { 189 ResourceMark rm; 190 char* k_name = ksym->as_C_string(); 191 // Find the first '+' char and truncate the string at that point. 192 // NOTE: This will not work correctly if the original hidden class 193 // name contains a '+'. 194 char* plus_char = strchr(k_name, '+'); 195 if (plus_char != NULL) { 196 *plus_char = 0; 197 char* c_name = _name->as_C_string(); 198 if (strcmp(c_name, k_name) == 0) { 199 _count++; 200 } 201 } 202 } 203 } 204 } 205 206 int count() const { 207 return _count; 208 } 209 }; 210 211 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name)) 212 oop h_name = JNIHandles::resolve(name); 213 if (h_name == NULL) return false; 214 Symbol* sym = java_lang_String::as_symbol(h_name); 215 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 216 217 WBIsKlassAliveClosure closure(sym); 218 ClassLoaderDataGraph::classes_do(&closure); 219 220 // Return the count of alive classes with this name. 221 return closure.count(); 222 WB_END 223 224 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name)) 225 oop h_name = JNIHandles::resolve(name); 226 if (h_name == NULL) return false; 227 Symbol* sym = java_lang_String::as_symbol(h_name); 228 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 229 return (jint)sym->refcount(); 230 WB_END 231 232 233 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 234 #if INCLUDE_JVMTI 235 ResourceMark rm; 236 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 237 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 238 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 239 assert(err == JVMTI_ERROR_NONE, "must not fail"); 240 #endif 241 } 242 WB_END 243 244 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 245 #if INCLUDE_JVMTI 246 ResourceMark rm; 247 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 248 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 249 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 250 assert(err == JVMTI_ERROR_NONE, "must not fail"); 251 #endif 252 } 253 WB_END 254 255 256 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 257 return (jlong)Arguments::max_heap_for_compressed_oops(); 258 } 259 WB_END 260 261 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 262 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " " 263 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 264 MinHeapSize, 265 InitialHeapSize, 266 MaxHeapSize, 267 SpaceAlignment, 268 HeapAlignment); 269 } 270 WB_END 271 272 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 273 size_t granularity = os::vm_allocation_granularity(); 274 ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size()); 275 VirtualSpace vs; 276 vs.initialize(rhs, 50 * granularity); 277 278 // Check if constraints are complied 279 if (!( UseCompressedOops && rhs.base() != NULL && 280 CompressedOops::base() != NULL && 281 CompressedOops::use_implicit_null_checks() )) { 282 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 283 "\tUseCompressedOops is %d\n" 284 "\trhs.base() is " PTR_FORMAT "\n" 285 "\tCompressedOops::base() is " PTR_FORMAT "\n" 286 "\tCompressedOops::use_implicit_null_checks() is %d", 287 UseCompressedOops, 288 p2i(rhs.base()), 289 p2i(CompressedOops::base()), 290 CompressedOops::use_implicit_null_checks()); 291 return; 292 } 293 tty->print_cr("Reading from no access area... "); 294 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 295 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 296 WB_END 297 298 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 299 size_t magnitude, size_t iterations) { 300 size_t granularity = os::vm_allocation_granularity(); 301 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size()); 302 VirtualSpace vs; 303 if (!vs.initialize(rhs, 0)) { 304 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 305 return 3; 306 } 307 308 int seed = os::random(); 309 tty->print_cr("Random seed is %d", seed); 310 311 for (size_t i = 0; i < iterations; i++) { 312 313 // Whether we will shrink or grow 314 bool shrink = os::random() % 2L == 0; 315 316 // Get random delta to resize virtual space 317 size_t delta = (size_t)os::random() % magnitude; 318 319 // If we are about to shrink virtual space below zero, then expand instead 320 if (shrink && vs.committed_size() < delta) { 321 shrink = false; 322 } 323 324 // Resizing by delta 325 if (shrink) { 326 vs.shrink_by(delta); 327 } else { 328 // If expanding fails expand_by will silently return false 329 vs.expand_by(delta, true); 330 } 331 } 332 return 0; 333 } 334 335 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 336 jlong reserved_space_size, jlong magnitude, jlong iterations)) 337 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 338 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 339 iterations); 340 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 341 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 342 return 1; 343 } 344 345 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 346 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 347 if (sizeof(size_t) < sizeof(jlong)) { 348 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; 349 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 350 || iterations > size_t_max_value) { 351 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 352 return 2; 353 } 354 } 355 356 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 357 (size_t) magnitude, (size_t) iterations); 358 WB_END 359 360 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name)) 361 return GCConfig::is_gc_supported((CollectedHeap::Name)name); 362 WB_END 363 364 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name)) 365 #if INCLUDE_JVMCI 366 if (EnableJVMCI) { 367 JVMCIEnv jvmciEnv(thread, env, __FILE__, __LINE__); 368 return jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name); 369 } 370 #endif 371 return false; 372 WB_END 373 374 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name)) 375 return GCConfig::is_gc_selected((CollectedHeap::Name)name); 376 WB_END 377 378 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o)) 379 return GCConfig::is_gc_selected_ergonomically(); 380 WB_END 381 382 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 383 oop p = JNIHandles::resolve(obj); 384 #if INCLUDE_G1GC 385 if (UseG1GC) { 386 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 387 const HeapRegion* hr = g1h->heap_region_containing(p); 388 return !(hr->is_young()); 389 } 390 #endif 391 #if INCLUDE_PARALLELGC 392 if (UseParallelGC) { 393 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 394 return !psh->is_in_young(p); 395 } 396 #endif 397 #if INCLUDE_ZGC 398 if (UseZGC) { 399 return Universe::heap()->is_in(p); 400 } 401 #endif 402 #if INCLUDE_SHENANDOAHGC 403 if (UseShenandoahGC) { 404 return Universe::heap()->is_in(p); 405 } 406 #endif 407 GenCollectedHeap* gch = GenCollectedHeap::heap(); 408 return !gch->is_in_young(p); 409 WB_END 410 411 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 412 oop p = JNIHandles::resolve(obj); 413 return p->size() * HeapWordSize; 414 WB_END 415 416 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 417 return (jlong)SpaceAlignment; 418 WB_END 419 420 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 421 return (jlong)HeapAlignment; 422 WB_END 423 424 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o)) 425 return Universe::heap()->supports_concurrent_gc_breakpoints(); 426 WB_END 427 428 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o)) 429 ConcurrentGCBreakpoints::acquire_control(); 430 WB_END 431 432 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o)) 433 ConcurrentGCBreakpoints::release_control(); 434 WB_END 435 436 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o)) 437 ConcurrentGCBreakpoints::run_to_idle(); 438 WB_END 439 440 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at)) 441 Handle h_name(THREAD, JNIHandles::resolve(at)); 442 ResourceMark rm; 443 const char* c_name = java_lang_String::as_utf8_string(h_name()); 444 return ConcurrentGCBreakpoints::run_to(c_name); 445 WB_END 446 447 #if INCLUDE_G1GC 448 449 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 450 if (UseG1GC) { 451 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 452 oop result = JNIHandles::resolve(obj); 453 const HeapRegion* hr = g1h->heap_region_containing(result); 454 return hr->is_humongous(); 455 } 456 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 457 WB_END 458 459 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 460 if (UseG1GC) { 461 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 462 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 463 return hr->is_humongous(); 464 } 465 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 466 WB_END 467 468 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 469 if (UseG1GC) { 470 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 471 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 472 return hr->is_free(); 473 } 474 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 475 WB_END 476 477 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 478 if (UseG1GC) { 479 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 480 size_t nr = g1h->max_regions(); 481 return (jlong)nr; 482 } 483 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 484 WB_END 485 486 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 487 if (UseG1GC) { 488 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 489 size_t nr = g1h->num_free_regions(); 490 return (jlong)nr; 491 } 492 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 493 WB_END 494 495 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 496 if (UseG1GC) { 497 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 498 return g1h->concurrent_mark()->cm_thread()->in_progress(); 499 } 500 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 501 WB_END 502 503 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o)) 504 if (UseG1GC) { 505 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 506 if (!g1h->concurrent_mark()->cm_thread()->in_progress()) { 507 g1h->collect(GCCause::_wb_conc_mark); 508 return true; 509 } 510 return false; 511 } 512 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled"); 513 WB_END 514 515 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 516 if (UseG1GC) { 517 return (jint)HeapRegion::GrainBytes; 518 } 519 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 520 WB_END 521 522 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o)) 523 if (UseG1GC) { 524 return G1CollectedHeap::heap()->has_uncommittable_regions(); 525 } 526 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled"); 527 WB_END 528 529 #endif // INCLUDE_G1GC 530 531 #if INCLUDE_PARALLELGC 532 533 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 534 if (UseParallelGC) { 535 return GenAlignment; 536 } 537 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 538 WB_END 539 540 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 541 if (UseParallelGC) { 542 return GenAlignment; 543 } 544 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 545 WB_END 546 547 #endif // INCLUDE_PARALLELGC 548 549 #if INCLUDE_G1GC 550 551 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 552 if (UseG1GC) { 553 ResourceMark rm(THREAD); 554 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 555 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 556 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 557 return JNIHandles::make_local(THREAD, h()); 558 } 559 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 560 WB_END 561 562 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o)) 563 if (UseG1GC) { 564 G1NUMA* numa = G1NUMA::numa(); 565 return (jint)numa->num_active_nodes(); 566 } 567 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled"); 568 WB_END 569 570 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o)) 571 if (UseG1GC) { 572 G1NUMA* numa = G1NUMA::numa(); 573 int num_node_ids = (int)numa->num_active_nodes(); 574 const int* node_ids = numa->node_ids(); 575 576 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL); 577 for (int i = 0; i < num_node_ids; i++) { 578 result->int_at_put(i, (jint)node_ids[i]); 579 } 580 return (jintArray) JNIHandles::make_local(THREAD, result); 581 } 582 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled"); 583 WB_END 584 585 class OldRegionsLivenessClosure: public HeapRegionClosure { 586 587 private: 588 const int _liveness; 589 size_t _total_count; 590 size_t _total_memory; 591 size_t _total_memory_to_free; 592 593 public: 594 OldRegionsLivenessClosure(int liveness) : 595 _liveness(liveness), 596 _total_count(0), 597 _total_memory(0), 598 _total_memory_to_free(0) { } 599 600 size_t total_count() { return _total_count; } 601 size_t total_memory() { return _total_memory; } 602 size_t total_memory_to_free() { return _total_memory_to_free; } 603 604 bool do_heap_region(HeapRegion* r) { 605 if (r->is_old()) { 606 size_t live = r->live_bytes(); 607 size_t size = r->used(); 608 size_t reg_size = HeapRegion::GrainBytes; 609 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 610 _total_memory += size; 611 ++_total_count; 612 if (size == reg_size) { 613 // We don't include non-full regions since they are unlikely included in mixed gc 614 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 615 _total_memory_to_free += size - live; 616 } 617 } 618 } 619 return false; 620 } 621 }; 622 623 624 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 625 if (!UseG1GC) { 626 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 627 } 628 if (liveness < 0) { 629 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 630 } 631 632 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 633 OldRegionsLivenessClosure rli(liveness); 634 g1h->heap_region_iterate(&rli); 635 636 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 637 result->long_at_put(0, rli.total_count()); 638 result->long_at_put(1, rli.total_memory()); 639 result->long_at_put(2, rli.total_memory_to_free()); 640 return (jlongArray) JNIHandles::make_local(THREAD, result); 641 WB_END 642 643 #endif // INCLUDE_G1GC 644 645 // Alloc memory using the test memory type so that we can use that to see if 646 // NMT picks it up correctly 647 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 648 jlong addr = 0; 649 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 650 return addr; 651 WB_END 652 653 // Alloc memory with pseudo call stack. The test can create pseudo malloc 654 // allocation site to stress the malloc tracking. 655 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 656 address pc = (address)(size_t)pseudo_stack; 657 NativeCallStack stack(&pc, 1); 658 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 659 WB_END 660 661 // Alloc memory with pseudo call stack and specific memory type. 662 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type)) 663 address pc = (address)(size_t)pseudo_stack; 664 NativeCallStack stack(&pc, 1); 665 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack); 666 WB_END 667 668 // Free the memory allocated by NMTAllocTest 669 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 670 os::free((void*)(uintptr_t)mem); 671 WB_END 672 673 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 674 jlong addr = 0; 675 676 addr = (jlong)(uintptr_t)os::reserve_memory(size); 677 MemTracker::record_virtual_memory_type((address)addr, mtTest); 678 679 return addr; 680 WB_END 681 682 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size)) 683 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size); 684 MemTracker::record_virtual_memory_type((address)addr, mtTest); 685 686 return addr; 687 WB_END 688 689 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 690 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 691 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 692 WB_END 693 694 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 695 os::uncommit_memory((char *)(uintptr_t)addr, size); 696 WB_END 697 698 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 699 os::release_memory((char *)(uintptr_t)addr, size); 700 WB_END 701 702 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 703 int hash_size = MallocSiteTable::hash_buckets(); 704 assert(hash_size > 0, "NMT hash_size should be > 0"); 705 return (jint)hash_size; 706 WB_END 707 708 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size)) 709 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size)); 710 return (jlong)arena; 711 WB_END 712 713 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena)) 714 Arena* a = (Arena*)arena; 715 delete a; 716 WB_END 717 718 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size)) 719 Arena* a = (Arena*)arena; 720 a->Amalloc(size_t(size)); 721 WB_END 722 723 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 724 assert(method != NULL, "method should not be null"); 725 ThreadToNativeFromVM ttn(thread); 726 return env->FromReflectedMethod(method); 727 } 728 729 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 730 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 731 private: 732 int _result; 733 const bool _make_not_entrant; 734 public: 735 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 736 _result(0), _make_not_entrant(make_not_entrant) { } 737 int result() const { return _result; } 738 739 void doit() { 740 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 741 if (t->has_last_Java_frame()) { 742 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) { 743 frame* f = fst.current(); 744 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 745 Deoptimization::deoptimize(t, *f); 746 if (_make_not_entrant) { 747 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 748 assert(cm != NULL, "sanity check"); 749 cm->make_not_entrant(); 750 } 751 ++_result; 752 } 753 } 754 } 755 } 756 } 757 }; 758 759 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 760 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 761 VMThread::execute(&op); 762 return op.result(); 763 WB_END 764 765 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth)) 766 bool result = false; 767 if (thread->has_last_Java_frame()) { 768 RegisterMap reg_map(thread, 769 RegisterMap::UpdateMap::include, 770 RegisterMap::ProcessFrames::include, 771 RegisterMap::WalkContinuation::skip); 772 javaVFrame *jvf = thread->last_java_vframe(®_map); 773 for (jint d = 0; d < depth && jvf != NULL; d++) { 774 jvf = jvf->java_sender(); 775 } 776 result = jvf != NULL && jvf->fr().is_deoptimized_frame(); 777 } 778 return result; 779 WB_END 780 781 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 782 CodeCache::mark_all_nmethods_for_deoptimization(); 783 Deoptimization::deoptimize_all_marked(); 784 WB_END 785 786 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 787 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 788 int result = 0; 789 CHECK_JNI_EXCEPTION_(env, result); 790 MutexLocker mu(Compile_lock); 791 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 792 if (is_osr) { 793 result += mh->mark_osr_nmethods(); 794 } else if (mh->code() != NULL) { 795 mh->code()->mark_for_deoptimization(); 796 ++result; 797 } 798 result += CodeCache::mark_for_deoptimization(mh()); 799 if (result > 0) { 800 Deoptimization::deoptimize_all_marked(); 801 } 802 return result; 803 WB_END 804 805 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 806 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 807 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 808 MutexLocker mu(Compile_lock); 809 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 810 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 811 if (code == NULL) { 812 return JNI_FALSE; 813 } 814 return !code->is_marked_for_deoptimization(); 815 WB_END 816 817 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) { 818 if (comp == NULL) { 819 return true; 820 } 821 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 822 if (directive->ExcludeOption) { 823 return true; 824 } 825 return false; 826 } 827 828 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) { 829 if (is_osr) { 830 return CompilationPolicy::can_be_osr_compiled(mh, level); 831 } else { 832 return CompilationPolicy::can_be_compiled(mh, level); 833 } 834 } 835 836 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 837 if (method == NULL || comp_level > CompilationPolicy::highest_compile_level()) { 838 return false; 839 } 840 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 841 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 842 MutexLocker mu(Compile_lock); 843 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 844 845 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by 846 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive 847 // to exclude a compilation of 'method'. 848 if (comp_level == CompLevel_any) { 849 // Both compilers could have ExcludeOption set. Check all combinations. 850 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh); 851 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh); 852 if (excluded_c1 && excluded_c2) { 853 // Compilation of 'method' excluded by both compilers. 854 return false; 855 } 856 857 if (excluded_c1) { 858 // C1 only has ExcludeOption set: Check if compilable with C2. 859 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization); 860 } else if (excluded_c2) { 861 // C2 only has ExcludeOption set: Check if compilable with C1. 862 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple); 863 } 864 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) { 865 // Compilation of 'method' excluded by compiler used for 'comp_level'. 866 return false; 867 } 868 869 return can_be_compiled_at_level(mh, is_osr, (int)comp_level); 870 WB_END 871 872 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 873 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 874 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 875 MutexLocker mu(Compile_lock); 876 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 877 return mh->queued_for_compilation(); 878 WB_END 879 880 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 881 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) { 882 return false; // Intrinsic is not available on a non-existent compilation level. 883 } 884 jmethodID method_id, compilation_context_id; 885 method_id = reflected_method_to_jmid(thread, env, method); 886 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 887 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 888 889 DirectiveSet* directive; 890 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 891 assert(comp != NULL, "compiler not available"); 892 if (compilation_context != NULL) { 893 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 894 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 895 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 896 directive = DirectivesStack::getMatchingDirective(cch, comp); 897 } else { 898 // Calling with NULL matches default directive 899 directive = DirectivesStack::getDefaultDirective(comp); 900 } 901 bool result = comp->is_intrinsic_available(mh, directive); 902 DirectivesStack::release(directive); 903 return result; 904 WB_END 905 906 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 907 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 908 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 909 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 910 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 911 return (code != NULL ? code->comp_level() : CompLevel_none); 912 WB_END 913 914 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 915 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 916 CHECK_JNI_EXCEPTION(env); 917 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 918 if (is_osr) { 919 mh->set_not_osr_compilable("WhiteBox", comp_level); 920 } else { 921 mh->set_not_compilable("WhiteBox", comp_level); 922 } 923 WB_END 924 925 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method)) 926 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 927 CHECK_JNI_EXCEPTION_(env, 0); 928 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 929 uint cnt = 0; 930 MethodData* mdo = mh->method_data(); 931 if (mdo != NULL) { 932 cnt = mdo->decompile_count(); 933 } 934 return cnt; 935 WB_END 936 937 // Get the trap count of a method for a specific reason. If the trap count for 938 // that reason did overflow, this includes the overflow trap count of the method. 939 // If 'reason' is NULL, the sum of the traps for all reasons will be returned. 940 // This number includes the overflow trap count if the trap count for any reason 941 // did overflow. 942 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj)) 943 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 944 CHECK_JNI_EXCEPTION_(env, 0); 945 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 946 uint cnt = 0; 947 MethodData* mdo = mh->method_data(); 948 if (mdo != NULL) { 949 ResourceMark rm(THREAD); 950 char* reason_str = (reason_obj == NULL) ? 951 NULL : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj)); 952 bool overflow = false; 953 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) { 954 if (reason_str != NULL && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) { 955 cnt = mdo->trap_count(reason); 956 // Count in the overflow trap count on overflow 957 if (cnt == (uint)-1) { 958 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count(); 959 } 960 break; 961 } else if (reason_str == NULL) { 962 uint c = mdo->trap_count(reason); 963 if (c == (uint)-1) { 964 c = mdo->trap_count_limit(); 965 if (!overflow) { 966 // Count overflow trap count just once 967 overflow = true; 968 c += mdo->overflow_trap_count(); 969 } 970 } 971 cnt += c; 972 } 973 } 974 } 975 return cnt; 976 WB_END 977 978 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj)) 979 if (reason_obj == NULL && action_obj == NULL) { 980 return Deoptimization::total_deoptimization_count(); 981 } 982 ResourceMark rm(THREAD); 983 const char *reason_str = (reason_obj == NULL) ? 984 NULL : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj)); 985 const char *action_str = (action_obj == NULL) ? 986 NULL : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj)); 987 988 return Deoptimization::deoptimization_count(reason_str, action_str); 989 WB_END 990 991 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 992 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 993 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 994 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 995 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 996 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 997 WB_END 998 999 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1000 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1001 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1002 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1003 bool result = mh->dont_inline(); 1004 mh->set_dont_inline(value == JNI_TRUE); 1005 return result; 1006 WB_END 1007 1008 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 1009 if (comp_level == CompLevel_any) { 1010 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 1011 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 1012 } else { 1013 return CompileBroker::queue_size(comp_level); 1014 } 1015 WB_END 1016 1017 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1018 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1019 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1020 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1021 bool result = mh->force_inline(); 1022 mh->set_force_inline(value == JNI_TRUE); 1023 return result; 1024 WB_END 1025 1026 #ifdef LINUX 1027 bool WhiteBox::validate_cgroup(const char* proc_cgroups, 1028 const char* proc_self_cgroup, 1029 const char* proc_self_mountinfo, 1030 u1* cg_flags) { 1031 CgroupInfo cg_infos[CG_INFO_LENGTH]; 1032 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups, 1033 proc_self_cgroup, 1034 proc_self_mountinfo, cg_flags); 1035 } 1036 #endif 1037 1038 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) { 1039 // Screen for unavailable/bad comp level or null method 1040 AbstractCompiler* comp = CompileBroker::compiler(comp_level); 1041 if (method == NULL) { 1042 tty->print_cr("WB error: request to compile NULL method"); 1043 return false; 1044 } 1045 if (comp_level > CompilationPolicy::highest_compile_level()) { 1046 tty->print_cr("WB error: invalid compilation level %d", comp_level); 1047 return false; 1048 } 1049 if (comp == NULL) { 1050 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level); 1051 return false; 1052 } 1053 1054 // Check if compilation is blocking 1055 methodHandle mh(THREAD, method); 1056 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 1057 bool is_blocking = !directive->BackgroundCompilationOption; 1058 DirectivesStack::release(directive); 1059 1060 // Compile method and check result 1061 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false); 1062 MutexLocker mu(THREAD, Compile_lock); 1063 bool is_queued = mh->queued_for_compilation(); 1064 if ((!is_blocking && is_queued) || nm != NULL) { 1065 return true; 1066 } 1067 // Check code again because compilation may be finished before Compile_lock is acquired. 1068 if (bci == InvocationEntryBci) { 1069 CompiledMethod* code = mh->code(); 1070 if (code != NULL && code->as_nmethod_or_null() != NULL) { 1071 return true; 1072 } 1073 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != NULL) { 1074 return true; 1075 } 1076 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level); 1077 mh->print_short_name(tty); 1078 tty->cr(); 1079 if (is_blocking && is_queued) { 1080 tty->print_cr("WB error: blocking compilation is still in queue!"); 1081 } 1082 return false; 1083 } 1084 1085 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 1086 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1087 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1088 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 1089 WB_END 1090 1091 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 1092 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1093 Method* clinit = ik->class_initializer(); 1094 if (clinit == NULL || clinit->method_holder()->is_not_initialized()) { 1095 return false; 1096 } 1097 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD); 1098 WB_END 1099 1100 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 1101 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1102 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1103 1104 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1105 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 1106 bool result = directive->PrintAssemblyOption; 1107 DirectivesStack::release(directive); 1108 1109 return result; 1110 WB_END 1111 1112 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1113 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1114 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1115 1116 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1117 1118 ResourceMark rm(THREAD); 1119 const char* error_msg = NULL; 1120 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1121 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 1122 1123 if (m == NULL) { 1124 assert(error_msg != NULL, "Always have an error message"); 1125 tty->print_cr("Got error: %s", error_msg); 1126 return -1; // Pattern failed 1127 } 1128 1129 // Pattern works - now check if it matches 1130 int result; 1131 if (m->match(mh, InlineMatcher::force_inline)) { 1132 result = 2; // Force inline match 1133 } else if (m->match(mh, InlineMatcher::dont_inline)) { 1134 result = 1; // Dont inline match 1135 } else { 1136 result = 0; // No match 1137 } 1138 delete m; 1139 return result; 1140 WB_END 1141 1142 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1143 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1144 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1145 1146 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1147 1148 ResourceMark rm; 1149 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1150 1151 const char* error_msg = NULL; 1152 1153 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false); 1154 if (m == NULL) { 1155 assert(error_msg != NULL, "Must have error_msg"); 1156 tty->print_cr("Got error: %s", error_msg); 1157 return -1; 1158 } 1159 1160 // Pattern works - now check if it matches 1161 int result = m->matches(mh); 1162 delete m; 1163 assert(result == 0 || result == 1, "Result out of range"); 1164 return result; 1165 WB_END 1166 1167 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method)) 1168 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1169 CHECK_JNI_EXCEPTION(env); 1170 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1171 1172 MethodData* mdo = mh->method_data(); 1173 if (mdo == NULL) { 1174 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR); 1175 mdo = mh->method_data(); 1176 } 1177 mdo->init(); 1178 InvocationCounter* icnt = mdo->invocation_counter(); 1179 InvocationCounter* bcnt = mdo->backedge_counter(); 1180 // set i-counter according to CompilationPolicy::is_method_profiled 1181 icnt->set(Tier4MinInvocationThreshold); 1182 bcnt->set(Tier4CompileThreshold); 1183 WB_END 1184 1185 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 1186 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1187 CHECK_JNI_EXCEPTION(env); 1188 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1189 MutexLocker mu(THREAD, Compile_lock); 1190 MethodData* mdo = mh->method_data(); 1191 MethodCounters* mcs = mh->method_counters(); 1192 1193 if (mdo != NULL) { 1194 mdo->init(); 1195 ResourceMark rm(THREAD); 1196 int arg_count = mdo->method()->size_of_parameters(); 1197 for (int i = 0; i < arg_count; i++) { 1198 mdo->set_arg_modified(i, 0); 1199 } 1200 MutexLocker mu(THREAD, mdo->extra_data_lock()); 1201 mdo->clean_method_data(/*always_clean*/true); 1202 } 1203 1204 mh->clear_not_c1_compilable(); 1205 mh->clear_not_c2_compilable(); 1206 mh->clear_not_c2_osr_compilable(); 1207 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 1208 if (mcs != NULL) { 1209 mcs->clear_counters(); 1210 } 1211 WB_END 1212 1213 template <typename T, int type_enum> 1214 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) { 1215 if (name == NULL) { 1216 return false; 1217 } 1218 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1219 const char* flag_name = env->GetStringUTFChars(name, NULL); 1220 CHECK_JNI_EXCEPTION_(env, false); 1221 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name); 1222 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value); 1223 env->ReleaseStringUTFChars(name, flag_name); 1224 return (result == JVMFlag::SUCCESS); 1225 } 1226 1227 template <typename T, int type_enum> 1228 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) { 1229 if (name == NULL) { 1230 return false; 1231 } 1232 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1233 const char* flag_name = env->GetStringUTFChars(name, NULL); 1234 CHECK_JNI_EXCEPTION_(env, false); 1235 JVMFlag* flag = JVMFlag::find_flag(flag_name); 1236 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL); 1237 env->ReleaseStringUTFChars(name, flag_name); 1238 return (result == JVMFlag::SUCCESS); 1239 } 1240 1241 template <typename T> 1242 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1243 ResourceMark rm(thread); 1244 jclass clazz = env->FindClass(name->as_C_string()); 1245 CHECK_JNI_EXCEPTION_(env, NULL); 1246 jmethodID methodID = env->GetStaticMethodID(clazz, 1247 vmSymbols::valueOf_name()->as_C_string(), 1248 sig->as_C_string()); 1249 CHECK_JNI_EXCEPTION_(env, NULL); 1250 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1251 CHECK_JNI_EXCEPTION_(env, NULL); 1252 return result; 1253 } 1254 1255 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1256 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1257 } 1258 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1259 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1260 } 1261 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1262 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1263 } 1264 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1265 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1266 }*/ 1267 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1268 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1269 } 1270 1271 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1272 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1273 const char* flag_name = env->GetStringUTFChars(name, NULL); 1274 CHECK_JNI_EXCEPTION_(env, NULL); 1275 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name); 1276 env->ReleaseStringUTFChars(name, flag_name); 1277 return result; 1278 } 1279 1280 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1281 const JVMFlag* flag = getVMFlag(thread, env, name); 1282 return (flag != NULL) && flag->is_constant_in_binary(); 1283 WB_END 1284 1285 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1286 const JVMFlag* flag = getVMFlag(thread, env, name); 1287 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 1288 WB_END 1289 1290 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1291 bool result; 1292 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) { 1293 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1294 return booleanBox(thread, env, result); 1295 } 1296 return NULL; 1297 WB_END 1298 1299 template <typename T, int type_enum> 1300 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) { 1301 T result; 1302 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) { 1303 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1304 return longBox(thread, env, result); 1305 } 1306 return NULL; 1307 } 1308 1309 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1310 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name); 1311 WB_END 1312 1313 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1314 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name); 1315 WB_END 1316 1317 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1318 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name); 1319 WB_END 1320 1321 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1322 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name); 1323 WB_END 1324 1325 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1326 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name); 1327 WB_END 1328 1329 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1330 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name); 1331 WB_END 1332 1333 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1334 double result; 1335 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) { 1336 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1337 return doubleBox(thread, env, result); 1338 } 1339 return NULL; 1340 WB_END 1341 1342 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1343 ccstr ccstrResult; 1344 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) { 1345 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1346 jstring result = env->NewStringUTF(ccstrResult); 1347 CHECK_JNI_EXCEPTION_(env, NULL); 1348 return result; 1349 } 1350 return NULL; 1351 WB_END 1352 1353 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1354 bool result = value == JNI_TRUE ? true : false; 1355 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result); 1356 WB_END 1357 1358 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1359 int result = value; 1360 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result); 1361 WB_END 1362 1363 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1364 uint result = value; 1365 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result); 1366 WB_END 1367 1368 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1369 intx result = value; 1370 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result); 1371 WB_END 1372 1373 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1374 uintx result = value; 1375 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result); 1376 WB_END 1377 1378 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1379 uint64_t result = value; 1380 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result); 1381 WB_END 1382 1383 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1384 size_t result = value; 1385 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result); 1386 WB_END 1387 1388 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1389 double result = value; 1390 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result); 1391 WB_END 1392 1393 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1394 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1395 const char* ccstrValue; 1396 if (value == NULL) { 1397 ccstrValue = NULL; 1398 } 1399 else { 1400 ccstrValue = env->GetStringUTFChars(value, NULL); 1401 CHECK_JNI_EXCEPTION(env); 1402 } 1403 { 1404 ccstr param = ccstrValue; 1405 ThreadInVMfromNative ttvfn(thread); // back to VM 1406 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) { 1407 assert(param == NULL, "old value is freed automatically and not returned"); 1408 } 1409 } 1410 if (value != NULL) { 1411 env->ReleaseStringUTFChars(value, ccstrValue); 1412 } 1413 WB_END 1414 1415 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1416 WhiteBox::compilation_locked = true; 1417 WB_END 1418 1419 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1420 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1421 WhiteBox::compilation_locked = false; 1422 mo.notify_all(); 1423 WB_END 1424 1425 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1426 ResourceMark rm(THREAD); 1427 int len; 1428 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1429 return (StringTable::lookup(name, len) != NULL); 1430 WB_END 1431 1432 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1433 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1434 Universe::heap()->collect(GCCause::_wb_full_gc); 1435 #if INCLUDE_G1GC 1436 if (UseG1GC) { 1437 // Needs to be cleared explicitly for G1 1438 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1439 } 1440 #endif // INCLUDE_G1GC 1441 WB_END 1442 1443 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1444 Universe::heap()->collect(GCCause::_wb_young_gc); 1445 WB_END 1446 1447 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1448 // static+volatile in order to force the read to happen 1449 // (not be eliminated by the compiler) 1450 static char c; 1451 static volatile char* p; 1452 1453 p = os::reserve_memory(os::vm_allocation_granularity()); 1454 if (p == NULL) { 1455 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1456 } 1457 1458 c = *p; 1459 WB_END 1460 1461 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1462 const char* features = VM_Version::features_string(); 1463 ThreadToNativeFromVM ttn(thread); 1464 jstring features_string = env->NewStringUTF(features); 1465 1466 CHECK_JNI_EXCEPTION_(env, NULL); 1467 1468 return features_string; 1469 WB_END 1470 1471 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) { 1472 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1473 return CodeCache::get_code_heap(code)->code_blob_type(); 1474 } 1475 1476 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) { 1477 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1478 return CodeCache::get_code_heap(blob_type); 1479 } 1480 1481 struct CodeBlobStub { 1482 CodeBlobStub(const CodeBlob* blob) : 1483 name(os::strdup(blob->name())), 1484 size(blob->size()), 1485 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))), 1486 address((jlong) blob) { } 1487 ~CodeBlobStub() { os::free((void*) name); } 1488 const char* const name; 1489 const jint size; 1490 const jint blob_type; 1491 const jlong address; 1492 }; 1493 1494 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1495 ResourceMark rm; 1496 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1497 CHECK_JNI_EXCEPTION_(env, NULL); 1498 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1499 1500 jstring name = env->NewStringUTF(cb->name); 1501 CHECK_JNI_EXCEPTION_(env, NULL); 1502 env->SetObjectArrayElement(result, 0, name); 1503 1504 jobject obj = integerBox(thread, env, cb->size); 1505 CHECK_JNI_EXCEPTION_(env, NULL); 1506 env->SetObjectArrayElement(result, 1, obj); 1507 1508 obj = integerBox(thread, env, cb->blob_type); 1509 CHECK_JNI_EXCEPTION_(env, NULL); 1510 env->SetObjectArrayElement(result, 2, obj); 1511 1512 obj = longBox(thread, env, cb->address); 1513 CHECK_JNI_EXCEPTION_(env, NULL); 1514 env->SetObjectArrayElement(result, 3, obj); 1515 1516 return result; 1517 } 1518 1519 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1520 ResourceMark rm(THREAD); 1521 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1522 CHECK_JNI_EXCEPTION_(env, NULL); 1523 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1524 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1525 jobjectArray result = NULL; 1526 if (code == NULL) { 1527 return result; 1528 } 1529 int comp_level = code->comp_level(); 1530 int insts_size = code->insts_size(); 1531 1532 ThreadToNativeFromVM ttn(thread); 1533 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1534 CHECK_JNI_EXCEPTION_(env, NULL); 1535 result = env->NewObjectArray(5, clazz, NULL); 1536 if (result == NULL) { 1537 return result; 1538 } 1539 1540 CodeBlobStub stub(code); 1541 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1542 CHECK_JNI_EXCEPTION_(env, NULL); 1543 env->SetObjectArrayElement(result, 0, codeBlob); 1544 1545 jobject level = integerBox(thread, env, comp_level); 1546 CHECK_JNI_EXCEPTION_(env, NULL); 1547 env->SetObjectArrayElement(result, 1, level); 1548 1549 jbyteArray insts = env->NewByteArray(insts_size); 1550 CHECK_JNI_EXCEPTION_(env, NULL); 1551 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1552 env->SetObjectArrayElement(result, 2, insts); 1553 1554 jobject id = integerBox(thread, env, code->compile_id()); 1555 CHECK_JNI_EXCEPTION_(env, NULL); 1556 env->SetObjectArrayElement(result, 3, id); 1557 1558 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1559 CHECK_JNI_EXCEPTION_(env, NULL); 1560 env->SetObjectArrayElement(result, 4, entry_point); 1561 1562 return result; 1563 WB_END 1564 1565 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) { 1566 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1567 BufferBlob* blob; 1568 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1569 if (full_size < size) { 1570 full_size += align_up(size - full_size, oopSize); 1571 } 1572 { 1573 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1574 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1575 if (blob != NULL) { 1576 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1577 } 1578 } 1579 // Track memory usage statistic after releasing CodeCache_lock 1580 MemoryService::track_code_cache_memory_usage(); 1581 return blob; 1582 } 1583 1584 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1585 if (size < 0) { 1586 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1587 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1588 } 1589 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type)); 1590 WB_END 1591 1592 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1593 if (addr == 0) { 1594 return; 1595 } 1596 BufferBlob::free((BufferBlob*) addr); 1597 WB_END 1598 1599 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1600 ResourceMark rm; 1601 GrowableArray<CodeBlobStub*> blobs; 1602 { 1603 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1604 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type)); 1605 if (heap == NULL) { 1606 return NULL; 1607 } 1608 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1609 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1610 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1611 new (stub) CodeBlobStub(cb); 1612 blobs.append(stub); 1613 } 1614 } 1615 ThreadToNativeFromVM ttn(thread); 1616 jobjectArray result = NULL; 1617 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1618 CHECK_JNI_EXCEPTION_(env, NULL); 1619 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1620 CHECK_JNI_EXCEPTION_(env, NULL); 1621 if (result == NULL) { 1622 return result; 1623 } 1624 int i = 0; 1625 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1626 it != blobs.end(); ++it) { 1627 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1628 CHECK_JNI_EXCEPTION_(env, NULL); 1629 env->SetObjectArrayElement(result, i, obj); 1630 CHECK_JNI_EXCEPTION_(env, NULL); 1631 ++i; 1632 } 1633 return result; 1634 WB_END 1635 1636 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1637 return CompileBroker::get_compilation_activity_mode(); 1638 WB_END 1639 1640 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1641 if (addr == 0) { 1642 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1643 "WB_GetCodeBlob: addr is null"); 1644 } 1645 ThreadToNativeFromVM ttn(thread); 1646 CodeBlobStub stub((CodeBlob*) addr); 1647 return codeBlob2objectArray(thread, env, &stub); 1648 WB_END 1649 1650 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1651 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1652 CHECK_JNI_EXCEPTION_(env, 0); 1653 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1654 return (jlong) mh->method_data(); 1655 WB_END 1656 1657 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1658 return (jlong) thread->stack_size(); 1659 WB_END 1660 1661 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1662 return (jlong) thread->stack_overflow_state()->stack_available( 1663 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size(); 1664 WB_END 1665 1666 1667 int WhiteBox::array_bytes_to_length(size_t bytes) { 1668 return Array<u1>::bytes_to_length(bytes); 1669 } 1670 1671 /////////////// 1672 // MetaspaceTestContext and MetaspaceTestArena 1673 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit)) 1674 metaspace::MetaspaceTestContext* context = 1675 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit); 1676 return (jlong)p2i(context); 1677 WB_END 1678 1679 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1680 delete (metaspace::MetaspaceTestContext*) context; 1681 WB_END 1682 1683 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1684 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1685 context0->purge_area(); 1686 WB_END 1687 1688 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1689 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1690 context0->print_on(tty); 1691 WB_END 1692 1693 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1694 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1695 return context0->committed_words(); 1696 WB_END 1697 1698 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1699 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1700 return context0->used_words(); 1701 WB_END 1702 1703 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro)) 1704 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType; 1705 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1706 return (jlong)p2i(context0->create_arena(type)); 1707 WB_END 1708 1709 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena)) 1710 delete (metaspace::MetaspaceTestArena*) arena; 1711 WB_END 1712 1713 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size)) 1714 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena; 1715 MetaWord* p = arena0->allocate((size_t) word_size); 1716 return (jlong)p2i(p); 1717 WB_END 1718 1719 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size)) 1720 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena; 1721 arena0->deallocate((MetaWord*)p, (size_t) word_size); 1722 WB_END 1723 1724 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb)) 1725 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord; 1726 WB_END 1727 1728 ////////////// 1729 1730 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1731 if (size < 0) { 1732 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1733 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1734 } 1735 1736 oop class_loader_oop = JNIHandles::resolve(class_loader); 1737 ClassLoaderData* cld = class_loader_oop != NULL 1738 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1739 : ClassLoaderData::the_null_class_loader_data(); 1740 1741 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1742 1743 return (jlong)(uintptr_t)metadata; 1744 WB_END 1745 1746 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1747 jstring version, jstring location, jobjectArray packages)) 1748 Handle h_module (THREAD, JNIHandles::resolve(module)); 1749 Modules::define_module(h_module, is_open, version, location, packages, CHECK); 1750 WB_END 1751 1752 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1753 Handle h_from_module (THREAD, JNIHandles::resolve(from_module)); 1754 Handle h_to_module (THREAD, JNIHandles::resolve(to_module)); 1755 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK); 1756 WB_END 1757 1758 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1759 Handle h_module (THREAD, JNIHandles::resolve(module)); 1760 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK); 1761 WB_END 1762 1763 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1764 Handle h_module (THREAD, JNIHandles::resolve(module)); 1765 Modules::add_module_exports(h_module, package, Handle(), CHECK); 1766 WB_END 1767 1768 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1769 Handle h_from_module (THREAD, JNIHandles::resolve(from_module)); 1770 Handle h_source_module (THREAD, JNIHandles::resolve(source_module)); 1771 Modules::add_reads_module(h_from_module, h_source_module, CHECK); 1772 WB_END 1773 1774 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1775 if (inc < 0) { 1776 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1777 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1778 } 1779 1780 jlong max_size_t = (jlong) ((size_t) -1); 1781 if (inc > max_size_t) { 1782 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1783 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1784 } 1785 1786 size_t new_cap_until_GC = 0; 1787 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1788 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1789 if (!success) { 1790 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1791 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1792 "due to contention with another thread"); 1793 } 1794 return (jlong) new_cap_until_GC; 1795 WB_END 1796 1797 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1798 return (jlong) MetaspaceGC::capacity_until_GC(); 1799 WB_END 1800 1801 // The function is only valid when CDS is available. 1802 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb)) 1803 #if INCLUDE_CDS 1804 return (jlong)MetaspaceShared::core_region_alignment(); 1805 #else 1806 ShouldNotReachHere(); 1807 return 0L; 1808 #endif 1809 WB_END 1810 1811 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1812 oop obj_oop = JNIHandles::resolve(obj); 1813 return (jboolean) obj_oop->mark().has_monitor(); 1814 WB_END 1815 1816 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb)) 1817 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors"); 1818 return ObjectSynchronizer::request_deflate_idle_monitors(); 1819 WB_END 1820 1821 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1822 VM_ForceSafepoint force_safepoint_op; 1823 VMThread::execute(&force_safepoint_op); 1824 WB_END 1825 1826 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb)) 1827 nullStream dev_null; 1828 ClassLoaderStatsVMOperation force_op(&dev_null); 1829 VMThread::execute(&force_op); 1830 WB_END 1831 1832 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1833 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1834 return (jlong) ik->constants(); 1835 WB_END 1836 1837 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1838 return ConstantPool::CPCACHE_INDEX_TAG; 1839 WB_END 1840 1841 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1842 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1843 ConstantPool* cp = ik->constants(); 1844 if (cp->cache() == NULL) { 1845 return -1; 1846 } 1847 return cp->cache()->length(); 1848 WB_END 1849 1850 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1851 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1852 ConstantPool* cp = ik->constants(); 1853 if (cp->cache() == NULL) { 1854 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1855 } 1856 jint cpci = index; 1857 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1858 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1859 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1860 } 1861 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1862 return cpi; 1863 WB_END 1864 1865 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1866 return ConstantPool::encode_invokedynamic_index(index); 1867 WB_END 1868 1869 WB_ENTRY(jobjectArray, WB_getObjectsViaKlassOopMaps(JNIEnv* env, jobject wb, jobject thing)) 1870 oop aoop = JNIHandles::resolve(thing); 1871 if (!aoop->is_instance()) { 1872 return NULL; 1873 } 1874 instanceHandle ih(THREAD, (instanceOop) aoop); 1875 InstanceKlass* klass = InstanceKlass::cast(ih->klass()); 1876 if (klass->nonstatic_oop_map_count() == 0) { 1877 return NULL; 1878 } 1879 const OopMapBlock* map = klass->start_of_nonstatic_oop_maps(); 1880 const OopMapBlock* const end = map + klass->nonstatic_oop_map_count(); 1881 int oop_count = 0; 1882 while (map < end) { 1883 oop_count += map->count(); 1884 map++; 1885 } 1886 1887 objArrayHandle result_array = 1888 oopFactory::new_objArray_handle(vmClasses::Object_klass(), oop_count, CHECK_NULL); 1889 map = klass->start_of_nonstatic_oop_maps(); 1890 int index = 0; 1891 while (map < end) { 1892 int offset = map->offset(); 1893 for (unsigned int j = 0; j < map->count(); j++) { 1894 result_array->obj_at_put(index++, ih->obj_field(offset)); 1895 offset += heapOopSize; 1896 } 1897 map++; 1898 } 1899 return (jobjectArray)JNIHandles::make_local(THREAD, result_array()); 1900 WB_END 1901 1902 class CollectOops : public BasicOopIterateClosure { 1903 public: 1904 GrowableArray<Handle>* array; 1905 1906 jobjectArray create_jni_result(JNIEnv* env, TRAPS) { 1907 objArrayHandle result_array = 1908 oopFactory::new_objArray_handle(vmClasses::Object_klass(), array->length(), CHECK_NULL); 1909 for (int i = 0 ; i < array->length(); i++) { 1910 result_array->obj_at_put(i, array->at(i)()); 1911 } 1912 return (jobjectArray)JNIHandles::make_local(THREAD, result_array()); 1913 } 1914 1915 void add_oop(oop o) { 1916 Handle oh = Handle(Thread::current(), o); 1917 // Value might be oop, but JLS can't see as Object, just iterate through it... 1918 if (oh != NULL && oh->is_inline_type()) { 1919 oh->oop_iterate(this); 1920 } else { 1921 array->append(oh); 1922 } 1923 } 1924 1925 void do_oop(oop* o) { add_oop(HeapAccess<>::oop_load(o)); } 1926 void do_oop(narrowOop* v) { add_oop(HeapAccess<>::oop_load(v)); } 1927 }; 1928 1929 1930 WB_ENTRY(jobjectArray, WB_getObjectsViaOopIterator(JNIEnv* env, jobject wb, jobject thing)) 1931 ResourceMark rm(thread); 1932 Handle objh(thread, JNIHandles::resolve(thing)); 1933 GrowableArray<Handle>* array = new GrowableArray<Handle>(128); 1934 CollectOops collectOops; 1935 collectOops.array = array; 1936 objh->oop_iterate(&collectOops); 1937 return collectOops.create_jni_result(env, THREAD); 1938 WB_END 1939 1940 WB_ENTRY(jobjectArray, WB_getObjectsViaFrameOopIterator(JNIEnv* env, jobject wb, jint depth)) 1941 ResourceMark rm(THREAD); 1942 GrowableArray<Handle>* array = new GrowableArray<Handle>(128); 1943 CollectOops collectOops; 1944 collectOops.array = array; 1945 StackFrameStream sfs(thread, false /* update */, true /* process_frames */); 1946 while (depth > 0) { // Skip the native WB API frame 1947 sfs.next(); 1948 frame* f = sfs.current(); 1949 f->oops_do(&collectOops, NULL, sfs.register_map()); 1950 depth--; 1951 } 1952 return collectOops.create_jni_result(env, THREAD); 1953 WB_END 1954 1955 1956 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1957 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1958 VMThread::execute(&clear_ics); 1959 WB_END 1960 1961 template <typename T> 1962 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1963 assert(value != NULL, "sanity"); 1964 if (method == NULL || name == NULL) { 1965 return false; 1966 } 1967 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1968 CHECK_JNI_EXCEPTION_(env, false); 1969 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1970 // can't be in VM when we call JNI 1971 ThreadToNativeFromVM ttnfv(thread); 1972 const char* flag_name = env->GetStringUTFChars(name, NULL); 1973 CHECK_JNI_EXCEPTION_(env, false); 1974 enum CompileCommand option = CompilerOracle::string_to_option(flag_name); 1975 env->ReleaseStringUTFChars(name, flag_name); 1976 if (option == CompileCommand::Unknown) { 1977 return false; 1978 } 1979 if (!CompilerOracle::option_matches_type(option, *value)) { 1980 return false; 1981 } 1982 return CompilerOracle::has_option_value(mh, option, *value); 1983 } 1984 1985 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1986 bool result; 1987 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1988 // can't be in VM when we call JNI 1989 ThreadToNativeFromVM ttnfv(thread); 1990 return booleanBox(thread, env, result); 1991 } 1992 return NULL; 1993 WB_END 1994 1995 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1996 intx result; 1997 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1998 // can't be in VM when we call JNI 1999 ThreadToNativeFromVM ttnfv(thread); 2000 return longBox(thread, env, result); 2001 } 2002 return NULL; 2003 WB_END 2004 2005 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2006 uintx result; 2007 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 2008 // can't be in VM when we call JNI 2009 ThreadToNativeFromVM ttnfv(thread); 2010 return longBox(thread, env, result); 2011 } 2012 return NULL; 2013 WB_END 2014 2015 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2016 double result; 2017 if (GetMethodOption <double> (thread, env, method, name, &result)) { 2018 // can't be in VM when we call JNI 2019 ThreadToNativeFromVM ttnfv(thread); 2020 return doubleBox(thread, env, result); 2021 } 2022 return NULL; 2023 WB_END 2024 2025 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2026 ccstr ccstrResult; 2027 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 2028 // can't be in VM when we call JNI 2029 ThreadToNativeFromVM ttnfv(thread); 2030 jstring result = env->NewStringUTF(ccstrResult); 2031 CHECK_JNI_EXCEPTION_(env, NULL); 2032 return result; 2033 } 2034 return NULL; 2035 WB_END 2036 2037 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb)) 2038 const char* p = Arguments::get_default_shared_archive_path(); 2039 ThreadToNativeFromVM ttn(thread); 2040 jstring path_string = env->NewStringUTF(p); 2041 2042 CHECK_JNI_EXCEPTION_(env, NULL); 2043 2044 return path_string; 2045 WB_END 2046 2047 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb)) 2048 return UseSharedSpaces; 2049 WB_END 2050 2051 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb)) 2052 #if INCLUDE_CDS 2053 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION; 2054 #else 2055 ShouldNotReachHere(); 2056 return (jint)-1; 2057 #endif 2058 WB_END 2059 2060 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb)) 2061 #if INCLUDE_CDS 2062 return (jint)CURRENT_CDS_ARCHIVE_VERSION; 2063 #else 2064 ShouldNotReachHere(); 2065 return (jint)-1; 2066 #endif 2067 WB_END 2068 2069 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb)) 2070 return FileMapInfo::memory_mapping_failed(); 2071 WB_END 2072 2073 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 2074 oop obj_oop = JNIHandles::resolve(obj); 2075 return Universe::heap()->is_archived_object(obj_oop); 2076 WB_END 2077 2078 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str)) 2079 ResourceMark rm(THREAD); 2080 oop str_oop = JNIHandles::resolve(str); 2081 int length; 2082 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false)); 2083 return StringTable::lookup_shared(chars, length) == str_oop; 2084 WB_END 2085 2086 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 2087 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2088 WB_END 2089 2090 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env)) 2091 return ArchiveHeapLoader::closed_regions_mapped(); 2092 WB_END 2093 2094 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz)) 2095 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 2096 if (k->is_instance_klass()) { 2097 InstanceKlass *ik = InstanceKlass::cast(k); 2098 ConstantPool *cp = ik->constants(); 2099 objArrayOop refs = cp->resolved_references(); 2100 return (jobject)JNIHandles::make_local(THREAD, refs); 2101 } else { 2102 return NULL; 2103 } 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::open_regions_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 != NULL; vf = vf->java_sender()) { 2200 GrowableArray<MonitorInfo*> *monitors = vf->monitors(); 2201 if (monitors != NULL) { 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 != NULL) { 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 != NULL) { 2224 ThreadsListHandle tlh; 2225 JavaThread* target = nullptr; 2226 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, NULL); 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 != NULL) { 2258 ThreadsListHandle tlh; 2259 JavaThread* target = nullptr; 2260 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, NULL); 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 != NULL) { 2287 ThreadsListHandle tlh; 2288 JavaThread* target = nullptr; 2289 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, NULL); 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 != NULL && 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 == NULL) { 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 == NULL) { 2357 return NULL; 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 == NULL) continue; 2383 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 2384 jthrowable throwable_obj = env->ExceptionOccurred(); 2385 if (throwable_obj != NULL) { 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, NULL); 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, NULL); 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 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env, 2446 jobject o, 2447 jstring proc_cgroups, 2448 jstring proc_self_cgroup, 2449 jstring proc_self_mountinfo)) 2450 jint ret = 0; 2451 #ifdef LINUX 2452 ThreadToNativeFromVM ttnfv(thread); 2453 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, NULL); 2454 CHECK_JNI_EXCEPTION_(env, 0); 2455 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, NULL); 2456 CHECK_JNI_EXCEPTION_(env, 0); 2457 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, NULL); 2458 CHECK_JNI_EXCEPTION_(env, 0); 2459 u1 cg_type_flags = 0; 2460 // This sets cg_type_flags 2461 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags); 2462 ret = (jint)cg_type_flags; 2463 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups); 2464 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup); 2465 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo); 2466 #endif 2467 return ret; 2468 WB_END 2469 2470 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 2471 os::print_os_info(tty); 2472 WB_END 2473 2474 // Elf decoder 2475 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 2476 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 2477 ElfFile::_do_not_cache_elf_section = true; 2478 #endif 2479 WB_END 2480 2481 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o)) 2482 return (jlong) ResolvedMethodTable::items_count(); 2483 WB_END 2484 2485 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o)) 2486 return (jint) ProtectionDomainCacheTable::removed_entries_count(); 2487 WB_END 2488 2489 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror)) 2490 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror)); 2491 // Return size in bytes. 2492 return k->size() * wordSize; 2493 WB_END 2494 2495 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java. 2496 // It explains how the thread's priority field is used for test state coordination. 2497 // 2498 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle)) 2499 oop target_oop = JNIHandles::resolve_non_null(target_handle); 2500 jlong tid = java_lang_Thread::thread_id(target_oop); 2501 JavaThread* target = java_lang_Thread::thread(target_oop); 2502 2503 // Grab a ThreadsListHandle to protect the target thread whilst terminating 2504 ThreadsListHandle tlh; 2505 2506 // Look up the target thread by tid to ensure it is present 2507 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid); 2508 if (t == NULL) { 2509 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!"); 2510 } 2511 2512 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected"); 2513 // Allow target to terminate by boosting priority 2514 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1)); 2515 2516 // Now wait for the target to terminate 2517 while (!target->is_terminated()) { 2518 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint 2519 os::naked_short_sleep(0); 2520 } 2521 2522 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated"); 2523 2524 // Now release the GC inducing thread - we have to re-resolve the external oop that 2525 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now. 2526 oop original = JNIHandles::resolve_non_null(target_handle); 2527 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2)); 2528 2529 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:"); 2530 2531 // The Java code should be creating garbage and triggering GC, which would potentially move 2532 // the threadObj oop. If the exiting thread is properly protected then its threadObj should 2533 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to 2534 // kick in. 2535 for (int i = 0; i < 5; i++) { 2536 oop original = JNIHandles::resolve_non_null(target_handle); 2537 oop current = t->threadObj(); 2538 if (original != current) { 2539 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i); 2540 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!"); 2541 } else { 2542 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i); 2543 ThreadBlockInVM tbivm(thread); 2544 os::naked_short_sleep(50); 2545 } 2546 } 2547 WB_END 2548 2549 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map)) 2550 ResourceMark rm; // for verify 2551 stringStream st; 2552 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) { 2553 frame* current_frame = fst.current(); 2554 if (log) { 2555 current_frame->print_value_on(&st, NULL); 2556 } 2557 current_frame->verify(fst.register_map()); 2558 } 2559 if (log) { 2560 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames"); 2561 tty->print_raw(st.freeze()); 2562 tty->print_cr("[WhiteBox::VerifyFrames] Done"); 2563 } 2564 WB_END 2565 2566 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb)) 2567 #if INCLUDE_JVMTI 2568 return JNI_TRUE; 2569 #else 2570 return JNI_FALSE; 2571 #endif 2572 WB_END 2573 2574 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time)) 2575 os::naked_short_sleep(time); 2576 WB_END 2577 2578 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o)) 2579 ThreadToNativeFromVM ttn(thread); 2580 jstring info_string = env->NewStringUTF(XSTR(LIBC)); 2581 CHECK_JNI_EXCEPTION_(env, NULL); 2582 return info_string; 2583 WB_END 2584 2585 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb)) 2586 GCLocker::lock_critical(thread); 2587 WB_END 2588 2589 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb)) 2590 GCLocker::unlock_critical(thread); 2591 WB_END 2592 2593 #define CC (char*) 2594 2595 static JNINativeMethod methods[] = { 2596 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 2597 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 2598 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 2599 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 2600 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 2601 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 2602 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 2603 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 2604 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 2605 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses }, 2606 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount }, 2607 {CC"parseCommandLine0", 2608 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;", 2609 (void*) &WB_ParseCommandLine 2610 }, 2611 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2612 (void*)&WB_AddToBootstrapClassLoaderSearch}, 2613 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2614 (void*)&WB_AddToSystemClassLoaderSearch}, 2615 {CC"getCompressedOopsMaxHeapSize", CC"()J", 2616 (void*)&WB_GetCompressedOopsMaxHeapSize}, 2617 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 2618 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 2619 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 2620 #if INCLUDE_CDS 2621 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName}, 2622 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName}, 2623 #endif 2624 #if INCLUDE_G1GC 2625 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 2626 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 2627 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 2628 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 2629 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 2630 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 2631 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 2632 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 2633 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit}, 2634 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 2635 (void*)&WB_G1AuxiliaryMemoryUsage }, 2636 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount }, 2637 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds }, 2638 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 2639 #endif // INCLUDE_G1GC 2640 #if INCLUDE_PARALLELGC 2641 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 2642 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 2643 #endif 2644 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 2645 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 2646 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType}, 2647 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 2648 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 2649 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 2650 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 2651 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 2652 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 2653 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 2654 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena }, 2655 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena }, 2656 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc }, 2657 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 2658 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized}, 2659 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 2660 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 2661 (void*)&WB_DeoptimizeMethod }, 2662 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 2663 (void*)&WB_IsMethodCompiled }, 2664 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 2665 (void*)&WB_IsMethodCompilable}, 2666 {CC"isMethodQueuedForCompilation0", 2667 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 2668 {CC"isIntrinsicAvailable0", 2669 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2670 (void*)&WB_IsIntrinsicAvailable}, 2671 {CC"makeMethodNotCompilable0", 2672 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2673 {CC"testSetDontInlineMethod0", 2674 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2675 {CC"getMethodCompilationLevel0", 2676 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2677 {CC"getMethodDecompileCount0", 2678 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount}, 2679 {CC"getMethodTrapCount0", 2680 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2681 (void*)&WB_GetMethodTrapCount}, 2682 {CC"getDeoptCount0", 2683 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount}, 2684 {CC"getMethodEntryBci0", 2685 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2686 {CC"getCompileQueueSize", 2687 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2688 {CC"testSetForceInlineMethod0", 2689 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2690 {CC"enqueueMethodForCompilation0", 2691 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2692 {CC"enqueueInitializerForCompilation0", 2693 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2694 {CC"markMethodProfiled", 2695 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled}, 2696 {CC"clearMethodState0", 2697 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2698 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2699 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2700 {CC"matchesMethod", 2701 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2702 (void*)&WB_MatchesMethod}, 2703 {CC"matchesInline", 2704 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2705 (void*)&WB_MatchesInline}, 2706 {CC"shouldPrintAssembly", 2707 CC"(Ljava/lang/reflect/Executable;I)Z", 2708 (void*)&WB_ShouldPrintAssembly}, 2709 2710 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2711 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2712 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2713 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2714 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2715 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2716 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2717 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2718 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2719 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2720 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2721 (void*)&WB_SetStringVMFlag}, 2722 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2723 (void*)&WB_GetBooleanVMFlag}, 2724 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2725 (void*)&WB_GetIntVMFlag}, 2726 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2727 (void*)&WB_GetUintVMFlag}, 2728 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2729 (void*)&WB_GetIntxVMFlag}, 2730 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2731 (void*)&WB_GetUintxVMFlag}, 2732 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2733 (void*)&WB_GetUint64VMFlag}, 2734 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2735 (void*)&WB_GetSizeTVMFlag}, 2736 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2737 (void*)&WB_GetDoubleVMFlag}, 2738 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2739 (void*)&WB_GetStringVMFlag}, 2740 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2741 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2742 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2743 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2744 {CC"allocateMetaspace", 2745 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2746 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2747 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2748 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment }, 2749 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2750 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2751 (void*)&WB_GetNMethod }, 2752 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2753 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2754 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2755 {CC"getCompilationActivityMode", 2756 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2757 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2758 (void*)&WB_GetMethodData }, 2759 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2760 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2761 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2762 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2763 (void*)&WB_DefineModule }, 2764 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2765 (void*)&WB_AddModuleExports }, 2766 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2767 (void*)&WB_AddReadsModule }, 2768 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2769 (void*)&WB_AddModuleExportsToAllUnnamed }, 2770 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2771 (void*)&WB_AddModuleExportsToAll }, 2772 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors }, 2773 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2774 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2775 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint }, 2776 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2777 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 2778 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 2779 {CC"remapInstructionOperandFromCPCache0", 2780 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 2781 {CC"encodeConstantPoolIndyIndex0", 2782 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 2783 {CC"getObjectsViaKlassOopMaps0", 2784 CC"(Ljava/lang/Object;)[Ljava/lang/Object;", (void*)&WB_getObjectsViaKlassOopMaps}, 2785 {CC"getObjectsViaOopIterator0", 2786 CC"(Ljava/lang/Object;)[Ljava/lang/Object;",(void*)&WB_getObjectsViaOopIterator}, 2787 {CC"getObjectsViaFrameOopIterator", 2788 CC"(I)[Ljava/lang/Object;", (void*)&WB_getObjectsViaFrameOopIterator}, 2789 {CC"getMethodBooleanOption", 2790 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2791 (void*)&WB_GetMethodBooleaneOption}, 2792 {CC"getMethodIntxOption", 2793 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2794 (void*)&WB_GetMethodIntxOption}, 2795 {CC"getMethodUintxOption", 2796 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2797 (void*)&WB_GetMethodUintxOption}, 2798 {CC"getMethodDoubleOption", 2799 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2800 (void*)&WB_GetMethodDoubleOption}, 2801 {CC"getMethodStringOption", 2802 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2803 (void*)&WB_GetMethodStringOption}, 2804 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;", 2805 (void*)&WB_GetDefaultArchivePath}, 2806 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion}, 2807 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion}, 2808 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled}, 2809 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 2810 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString }, 2811 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2812 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped }, 2813 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 2814 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass}, 2815 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2816 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded }, 2817 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded }, 2818 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded }, 2819 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded }, 2820 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC}, 2821 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive }, 2822 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed }, 2823 2824 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2825 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors }, 2826 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2827 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack }, 2828 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock}, 2829 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread }, 2830 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames }, 2831 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2832 (void*)&WB_AddCompilerDirective }, 2833 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2834 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported}, 2835 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler}, 2836 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected}, 2837 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically}, 2838 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints}, 2839 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl}, 2840 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl}, 2841 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle}, 2842 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z", 2843 (void*)&WB_ConcurrentGCRunTo}, 2844 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2845 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2846 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2847 {CC"validateCgroup", 2848 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I", 2849 (void*)&WB_ValidateCgroup }, 2850 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2851 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 2852 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount }, 2853 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount }, 2854 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize}, 2855 2856 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext}, 2857 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext}, 2858 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext}, 2859 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext}, 2860 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext}, 2861 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext}, 2862 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext}, 2863 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena}, 2864 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena}, 2865 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena}, 2866 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize}, 2867 2868 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded}, 2869 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe}, 2870 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName}, 2871 2872 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical}, 2873 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical}, 2874 }; 2875 2876 2877 #undef CC 2878 2879 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2880 { 2881 if (WhiteBoxAPI) { 2882 // Make sure that wbclass is loaded by the null classloader 2883 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass))); 2884 Handle loader(THREAD, ik->class_loader()); 2885 if (loader.is_null()) { 2886 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2887 WhiteBox::set_used(); 2888 } 2889 } 2890 } 2891 JVM_END