1 /* 2 * Copyright (c) 2012, 2018, 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 27 #include <new> 28 29 #include "classfile/classLoaderData.hpp" 30 #include "classfile/modules.hpp" 31 #include "classfile/stringTable.hpp" 32 #include "code/codeCache.hpp" 33 #include "compiler/methodMatcher.hpp" 34 #include "compiler/directivesParser.hpp" 35 #include "gc/shared/gcConfig.hpp" 36 #include "gc/shared/genCollectedHeap.hpp" 37 #include "jvmtifiles/jvmtiEnv.hpp" 38 #include "memory/metadataFactory.hpp" 39 #include "memory/metaspaceShared.hpp" 40 #include "memory/iterator.hpp" 41 #include "memory/resourceArea.hpp" 42 #include "memory/universe.hpp" 43 #include "memory/oopFactory.hpp" 44 #include "oops/array.hpp" 45 #include "oops/constantPool.inline.hpp" 46 #include "oops/method.inline.hpp" 47 #include "oops/objArrayKlass.hpp" 48 #include "oops/objArrayOop.inline.hpp" 49 #include "oops/oop.inline.hpp" 50 #include "oops/typeArrayOop.inline.hpp" 51 #include "prims/resolvedMethodTable.hpp" 52 #include "prims/wbtestmethods/parserTests.hpp" 53 #include "prims/whitebox.inline.hpp" 54 #include "runtime/arguments.hpp" 55 #include "runtime/compilationPolicy.hpp" 56 #include "runtime/deoptimization.hpp" 57 #include "runtime/fieldDescriptor.inline.hpp" 58 #include "runtime/flags/jvmFlag.hpp" 59 #include "runtime/frame.inline.hpp" 60 #include "runtime/handshake.hpp" 61 #include "runtime/interfaceSupport.inline.hpp" 62 #include "runtime/javaCalls.hpp" 63 #include "runtime/jniHandles.inline.hpp" 64 #include "runtime/os.hpp" 65 #include "runtime/sweeper.hpp" 66 #include "runtime/thread.hpp" 67 #include "runtime/threadSMR.hpp" 68 #include "runtime/vm_version.hpp" 69 #include "services/memoryService.hpp" 70 #include "utilities/align.hpp" 71 #include "utilities/debug.hpp" 72 #include "utilities/elfFile.hpp" 73 #include "utilities/exceptions.hpp" 74 #include "utilities/macros.hpp" 75 #if INCLUDE_CDS 76 #include "prims/cdsoffsets.hpp" 77 #endif // INCLUDE_CDS 78 #if INCLUDE_G1GC 79 #include "gc/g1/g1CollectedHeap.inline.hpp" 80 #include "gc/g1/g1ConcurrentMark.hpp" 81 #include "gc/g1/g1ConcurrentMarkThread.hpp" 82 #include "gc/g1/heapRegionRemSet.hpp" 83 #endif // INCLUDE_G1GC 84 #if INCLUDE_PARALLELGC 85 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 86 #include "gc/parallel/adjoiningGenerations.hpp" 87 #endif // INCLUDE_PARALLELGC 88 #if INCLUDE_NMT 89 #include "services/mallocSiteTable.hpp" 90 #include "services/memTracker.hpp" 91 #include "utilities/nativeCallStack.hpp" 92 #endif // INCLUDE_NMT 93 94 #ifdef LINUX 95 #include "osContainer_linux.hpp" 96 #endif 97 98 #define SIZE_T_MAX_VALUE ((size_t) -1) 99 100 #define CHECK_JNI_EXCEPTION_(env, value) \ 101 do { \ 102 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 103 THREAD->clear_pending_jni_exception_check(); \ 104 if (HAS_PENDING_EXCEPTION) { \ 105 return(value); \ 106 } \ 107 } while (0) 108 109 #define CHECK_JNI_EXCEPTION(env) \ 110 do { \ 111 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 112 THREAD->clear_pending_jni_exception_check(); \ 113 if (HAS_PENDING_EXCEPTION) { \ 114 return; \ 115 } \ 116 } while (0) 117 118 bool WhiteBox::_used = false; 119 volatile bool WhiteBox::compilation_locked = false; 120 121 class VM_WhiteBoxOperation : public VM_Operation { 122 public: 123 VM_WhiteBoxOperation() { } 124 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 125 bool allow_nested_vm_operations() const { return true; } 126 }; 127 128 129 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 130 return (jlong)(void*)JNIHandles::resolve(obj); 131 WB_END 132 133 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 134 return heapOopSize; 135 WB_END 136 137 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 138 return os::vm_page_size(); 139 WB_END 140 141 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 142 return os::vm_allocation_granularity(); 143 WB_END 144 145 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 146 return os::large_page_size(); 147 WB_END 148 149 class WBIsKlassAliveClosure : public KlassClosure { 150 Symbol* _name; 151 bool _found; 152 public: 153 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} 154 155 void do_klass(Klass* k) { 156 if (_found) return; 157 Symbol* ksym = k->name(); 158 if (ksym->fast_compare(_name) == 0) { 159 _found = true; 160 } 161 } 162 163 bool found() const { 164 return _found; 165 } 166 }; 167 168 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) 169 oop h_name = JNIHandles::resolve(name); 170 if (h_name == NULL) return false; 171 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false); 172 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 173 174 WBIsKlassAliveClosure closure(sym); 175 ClassLoaderDataGraph::classes_do(&closure); 176 177 return closure.found(); 178 WB_END 179 180 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 181 #if INCLUDE_JVMTI 182 ResourceMark rm; 183 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 184 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 185 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 186 assert(err == JVMTI_ERROR_NONE, "must not fail"); 187 #endif 188 } 189 WB_END 190 191 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 192 #if INCLUDE_JVMTI 193 ResourceMark rm; 194 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 195 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 196 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 197 assert(err == JVMTI_ERROR_NONE, "must not fail"); 198 #endif 199 } 200 WB_END 201 202 203 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 204 return (jlong)Arguments::max_heap_for_compressed_oops(); 205 } 206 WB_END 207 208 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 209 CollectorPolicy * p = Universe::heap()->collector_policy(); 210 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " 211 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 212 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(), 213 p->space_alignment(), p->heap_alignment()); 214 } 215 WB_END 216 217 #ifndef PRODUCT 218 // Forward declaration 219 void TestReservedSpace_test(); 220 void TestReserveMemorySpecial_test(); 221 void TestVirtualSpace_test(); 222 void TestMetaspaceUtils_test(); 223 #endif 224 225 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) 226 #ifndef PRODUCT 227 TestReservedSpace_test(); 228 TestReserveMemorySpecial_test(); 229 TestVirtualSpace_test(); 230 TestMetaspaceUtils_test(); 231 #endif 232 WB_END 233 234 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 235 size_t granularity = os::vm_allocation_granularity(); 236 ReservedHeapSpace rhs(100 * granularity, granularity, false); 237 VirtualSpace vs; 238 vs.initialize(rhs, 50 * granularity); 239 240 // Check if constraints are complied 241 if (!( UseCompressedOops && rhs.base() != NULL && 242 Universe::narrow_oop_base() != NULL && 243 Universe::narrow_oop_use_implicit_null_checks() )) { 244 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 245 "\tUseCompressedOops is %d\n" 246 "\trhs.base() is " PTR_FORMAT "\n" 247 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n" 248 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d", 249 UseCompressedOops, 250 p2i(rhs.base()), 251 p2i(Universe::narrow_oop_base()), 252 Universe::narrow_oop_use_implicit_null_checks()); 253 return; 254 } 255 tty->print_cr("Reading from no access area... "); 256 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 257 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 258 WB_END 259 260 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 261 size_t magnitude, size_t iterations) { 262 size_t granularity = os::vm_allocation_granularity(); 263 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false); 264 VirtualSpace vs; 265 if (!vs.initialize(rhs, 0)) { 266 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 267 return 3; 268 } 269 270 int seed = os::random(); 271 tty->print_cr("Random seed is %d", seed); 272 os::init_random(seed); 273 274 for (size_t i = 0; i < iterations; i++) { 275 276 // Whether we will shrink or grow 277 bool shrink = os::random() % 2L == 0; 278 279 // Get random delta to resize virtual space 280 size_t delta = (size_t)os::random() % magnitude; 281 282 // If we are about to shrink virtual space below zero, then expand instead 283 if (shrink && vs.committed_size() < delta) { 284 shrink = false; 285 } 286 287 // Resizing by delta 288 if (shrink) { 289 vs.shrink_by(delta); 290 } else { 291 // If expanding fails expand_by will silently return false 292 vs.expand_by(delta, true); 293 } 294 } 295 return 0; 296 } 297 298 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 299 jlong reserved_space_size, jlong magnitude, jlong iterations)) 300 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 301 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 302 iterations); 303 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 304 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 305 return 1; 306 } 307 308 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 309 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 310 if (sizeof(size_t) < sizeof(jlong)) { 311 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; 312 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 313 || iterations > size_t_max_value) { 314 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 315 return 2; 316 } 317 } 318 319 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 320 (size_t) magnitude, (size_t) iterations); 321 WB_END 322 323 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name)) 324 return GCConfig::is_gc_supported((CollectedHeap::Name)name); 325 WB_END 326 327 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name)) 328 return GCConfig::is_gc_selected((CollectedHeap::Name)name); 329 WB_END 330 331 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o)) 332 return GCConfig::is_gc_selected_ergonomically(); 333 WB_END 334 335 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 336 oop p = JNIHandles::resolve(obj); 337 #if INCLUDE_G1GC 338 if (UseG1GC) { 339 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 340 const HeapRegion* hr = g1h->heap_region_containing(p); 341 if (hr == NULL) { 342 return false; 343 } 344 return !(hr->is_young()); 345 } 346 #endif 347 #if INCLUDE_PARALLELGC 348 if (UseParallelGC) { 349 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 350 return !psh->is_in_young(p); 351 } 352 #endif 353 #if INCLUDE_ZGC 354 if (UseZGC) { 355 return Universe::heap()->is_in(p); 356 } 357 #endif 358 GenCollectedHeap* gch = GenCollectedHeap::heap(); 359 return !gch->is_in_young(p); 360 WB_END 361 362 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 363 oop p = JNIHandles::resolve(obj); 364 return p->size() * HeapWordSize; 365 WB_END 366 367 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 368 size_t alignment = Universe::heap()->collector_policy()->space_alignment(); 369 return (jlong)alignment; 370 WB_END 371 372 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 373 size_t alignment = Universe::heap()->collector_policy()->heap_alignment(); 374 return (jlong)alignment; 375 WB_END 376 377 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o)) 378 return Universe::heap()->supports_concurrent_phase_control(); 379 WB_END 380 381 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o)) 382 const char* const* phases = Universe::heap()->concurrent_phases(); 383 jint nphases = 0; 384 for ( ; phases[nphases] != NULL; ++nphases) ; 385 386 ResourceMark rm(thread); 387 ThreadToNativeFromVM ttn(thread); 388 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 389 CHECK_JNI_EXCEPTION_(env, NULL); 390 391 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL); 392 CHECK_JNI_EXCEPTION_(env, NULL); 393 394 // If push fails, return with pending exception. 395 if (env->PushLocalFrame(nphases) < 0) return NULL; 396 for (jint i = 0; i < nphases; ++i) { 397 jstring phase = env->NewStringUTF(phases[i]); 398 CHECK_JNI_EXCEPTION_(env, NULL); 399 env->SetObjectArrayElement(result, i, phase); 400 CHECK_JNI_EXCEPTION_(env, NULL); 401 } 402 env->PopLocalFrame(NULL); 403 404 return result; 405 WB_END 406 407 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name)) 408 Handle h_name(THREAD, JNIHandles::resolve(name)); 409 ResourceMark rm; 410 const char* c_name = java_lang_String::as_utf8_string(h_name()); 411 return Universe::heap()->request_concurrent_phase(c_name); 412 WB_END 413 414 #if INCLUDE_G1GC 415 416 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 417 if (UseG1GC) { 418 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 419 oop result = JNIHandles::resolve(obj); 420 const HeapRegion* hr = g1h->heap_region_containing(result); 421 return hr->is_humongous(); 422 } 423 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 424 WB_END 425 426 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 427 if (UseG1GC) { 428 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 429 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 430 return hr->is_humongous(); 431 } 432 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 433 WB_END 434 435 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 436 if (UseG1GC) { 437 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 438 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 439 return hr->is_free(); 440 } 441 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 442 WB_END 443 444 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 445 if (UseG1GC) { 446 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 447 size_t nr = g1h->max_regions(); 448 return (jlong)nr; 449 } 450 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 451 WB_END 452 453 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 454 if (UseG1GC) { 455 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 456 size_t nr = g1h->num_free_regions(); 457 return (jlong)nr; 458 } 459 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 460 WB_END 461 462 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 463 if (UseG1GC) { 464 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 465 return g1h->concurrent_mark()->cm_thread()->during_cycle(); 466 } 467 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 468 WB_END 469 470 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o)) 471 if (UseG1GC) { 472 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 473 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) { 474 g1h->collect(GCCause::_wb_conc_mark); 475 return true; 476 } 477 return false; 478 } 479 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled"); 480 WB_END 481 482 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 483 if (UseG1GC) { 484 return (jint)HeapRegion::GrainBytes; 485 } 486 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 487 WB_END 488 489 #endif // INCLUDE_G1GC 490 491 #if INCLUDE_PARALLELGC 492 493 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 494 if (UseParallelGC) { 495 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment(); 496 } 497 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 498 WB_END 499 500 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 501 if (UseParallelGC) { 502 return ParallelScavengeHeap::heap()->generation_alignment(); 503 } 504 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 505 WB_END 506 507 #endif // INCLUDE_PARALLELGC 508 509 #if INCLUDE_G1GC 510 511 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 512 if (UseG1GC) { 513 ResourceMark rm(THREAD); 514 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 515 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 516 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 517 return JNIHandles::make_local(env, h()); 518 } 519 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 520 WB_END 521 522 class OldRegionsLivenessClosure: public HeapRegionClosure { 523 524 private: 525 const int _liveness; 526 size_t _total_count; 527 size_t _total_memory; 528 size_t _total_memory_to_free; 529 530 public: 531 OldRegionsLivenessClosure(int liveness) : 532 _liveness(liveness), 533 _total_count(0), 534 _total_memory(0), 535 _total_memory_to_free(0) { } 536 537 size_t total_count() { return _total_count; } 538 size_t total_memory() { return _total_memory; } 539 size_t total_memory_to_free() { return _total_memory_to_free; } 540 541 bool do_heap_region(HeapRegion* r) { 542 if (r->is_old()) { 543 size_t prev_live = r->marked_bytes(); 544 size_t live = r->live_bytes(); 545 size_t size = r->used(); 546 size_t reg_size = HeapRegion::GrainBytes; 547 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 548 _total_memory += size; 549 ++_total_count; 550 if (size == reg_size) { 551 // we don't include non-full regions since they are unlikely included in mixed gc 552 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 553 _total_memory_to_free += size - prev_live; 554 } 555 } 556 } 557 return false; 558 } 559 }; 560 561 562 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 563 if (!UseG1GC) { 564 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 565 } 566 if (liveness < 0) { 567 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 568 } 569 570 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 571 OldRegionsLivenessClosure rli(liveness); 572 g1h->heap_region_iterate(&rli); 573 574 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 575 result->long_at_put(0, rli.total_count()); 576 result->long_at_put(1, rli.total_memory()); 577 result->long_at_put(2, rli.total_memory_to_free()); 578 return (jlongArray) JNIHandles::make_local(env, result); 579 WB_END 580 581 #endif // INCLUDE_G1GC 582 583 #if INCLUDE_NMT 584 // Alloc memory using the test memory type so that we can use that to see if 585 // NMT picks it up correctly 586 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 587 jlong addr = 0; 588 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 589 return addr; 590 WB_END 591 592 // Alloc memory with pseudo call stack. The test can create psudo malloc 593 // allocation site to stress the malloc tracking. 594 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 595 address pc = (address)(size_t)pseudo_stack; 596 NativeCallStack stack(&pc, 1); 597 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 598 WB_END 599 600 // Free the memory allocated by NMTAllocTest 601 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 602 os::free((void*)(uintptr_t)mem); 603 WB_END 604 605 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 606 jlong addr = 0; 607 608 addr = (jlong)(uintptr_t)os::reserve_memory(size); 609 MemTracker::record_virtual_memory_type((address)addr, mtTest); 610 611 return addr; 612 WB_END 613 614 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size)) 615 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr); 616 MemTracker::record_virtual_memory_type((address)addr, mtTest); 617 618 return addr; 619 WB_END 620 621 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 622 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 623 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 624 WB_END 625 626 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 627 os::uncommit_memory((char *)(uintptr_t)addr, size); 628 WB_END 629 630 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 631 os::release_memory((char *)(uintptr_t)addr, size); 632 WB_END 633 634 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env)) 635 // Test that we can downgrade NMT levels but not upgrade them. 636 if (MemTracker::tracking_level() == NMT_off) { 637 MemTracker::transition_to(NMT_off); 638 return MemTracker::tracking_level() == NMT_off; 639 } else { 640 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking"); 641 MemTracker::transition_to(NMT_summary); 642 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now"); 643 644 // Can't go to detail once NMT is set to summary. 645 MemTracker::transition_to(NMT_detail); 646 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now"); 647 648 // Shutdown sets tracking level to minimal. 649 MemTracker::shutdown(); 650 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); 651 652 // Once the tracking level is minimal, we cannot increase to summary. 653 // The code ignores this request instead of asserting because if the malloc site 654 // table overflows in another thread, it tries to change the code to summary. 655 MemTracker::transition_to(NMT_summary); 656 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 657 658 // Really can never go up to detail, verify that the code would never do this. 659 MemTracker::transition_to(NMT_detail); 660 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 661 return MemTracker::tracking_level() == NMT_minimal; 662 } 663 WB_END 664 665 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 666 int hash_size = MallocSiteTable::hash_buckets(); 667 assert(hash_size > 0, "NMT hash_size should be > 0"); 668 return (jint)hash_size; 669 WB_END 670 #endif // INCLUDE_NMT 671 672 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 673 assert(method != NULL, "method should not be null"); 674 ThreadToNativeFromVM ttn(thread); 675 return env->FromReflectedMethod(method); 676 } 677 678 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 679 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 680 private: 681 int _result; 682 const bool _make_not_entrant; 683 public: 684 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 685 _result(0), _make_not_entrant(make_not_entrant) { } 686 int result() const { return _result; } 687 688 void doit() { 689 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 690 if (t->has_last_Java_frame()) { 691 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) { 692 frame* f = fst.current(); 693 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 694 RegisterMap* reg_map = fst.register_map(); 695 Deoptimization::deoptimize(t, *f, reg_map); 696 if (_make_not_entrant) { 697 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 698 assert(cm != NULL, "sanity check"); 699 cm->make_not_entrant(); 700 } 701 ++_result; 702 } 703 } 704 } 705 } 706 } 707 }; 708 709 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 710 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 711 VMThread::execute(&op); 712 return op.result(); 713 WB_END 714 715 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 716 MutexLockerEx mu(Compile_lock); 717 CodeCache::mark_all_nmethods_for_deoptimization(); 718 VM_Deoptimize op; 719 VMThread::execute(&op); 720 WB_END 721 722 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 723 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 724 int result = 0; 725 CHECK_JNI_EXCEPTION_(env, result); 726 MutexLockerEx mu(Compile_lock); 727 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 728 if (is_osr) { 729 result += mh->mark_osr_nmethods(); 730 } else if (mh->code() != NULL) { 731 mh->code()->mark_for_deoptimization(); 732 ++result; 733 } 734 result += CodeCache::mark_for_deoptimization(mh()); 735 if (result > 0) { 736 VM_Deoptimize op; 737 VMThread::execute(&op); 738 } 739 return result; 740 WB_END 741 742 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 743 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 744 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 745 MutexLockerEx mu(Compile_lock); 746 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 747 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 748 if (code == NULL) { 749 return JNI_FALSE; 750 } 751 return (code->is_alive() && !code->is_marked_for_deoptimization()); 752 WB_END 753 754 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 755 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 756 return false; 757 } 758 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 759 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 760 MutexLockerEx mu(Compile_lock); 761 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 762 if (is_osr) { 763 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); 764 } else { 765 return CompilationPolicy::can_be_compiled(mh, comp_level); 766 } 767 WB_END 768 769 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 770 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 771 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 772 MutexLockerEx mu(Compile_lock); 773 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 774 return mh->queued_for_compilation(); 775 WB_END 776 777 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 778 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 779 return false; // Intrinsic is not available on a non-existent compilation level. 780 } 781 jmethodID method_id, compilation_context_id; 782 method_id = reflected_method_to_jmid(thread, env, method); 783 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 784 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 785 786 DirectiveSet* directive; 787 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 788 assert(comp != NULL, "compiler not available"); 789 if (compilation_context != NULL) { 790 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 791 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 792 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 793 directive = DirectivesStack::getMatchingDirective(cch, comp); 794 } else { 795 // Calling with NULL matches default directive 796 directive = DirectivesStack::getDefaultDirective(comp); 797 } 798 bool result = comp->is_intrinsic_available(mh, directive); 799 DirectivesStack::release(directive); 800 return result; 801 WB_END 802 803 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 804 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 805 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 806 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 807 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 808 return (code != NULL ? code->comp_level() : CompLevel_none); 809 WB_END 810 811 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 812 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 813 CHECK_JNI_EXCEPTION(env); 814 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 815 if (is_osr) { 816 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox"); 817 } else { 818 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); 819 } 820 WB_END 821 822 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 823 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 824 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 825 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 826 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 827 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 828 WB_END 829 830 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 831 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 832 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 833 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 834 bool result = mh->dont_inline(); 835 mh->set_dont_inline(value == JNI_TRUE); 836 return result; 837 WB_END 838 839 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 840 if (comp_level == CompLevel_any) { 841 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 842 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 843 } else { 844 return CompileBroker::queue_size(comp_level); 845 } 846 WB_END 847 848 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 849 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 850 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 851 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 852 bool result = mh->force_inline(); 853 mh->set_force_inline(value == JNI_TRUE); 854 return result; 855 WB_END 856 857 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) { 858 // Screen for unavailable/bad comp level or null method 859 AbstractCompiler* comp = CompileBroker::compiler(comp_level); 860 if (method == NULL) { 861 tty->print_cr("WB error: request to compile NULL method"); 862 return false; 863 } 864 if (comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 865 tty->print_cr("WB error: invalid compilation level %d", comp_level); 866 return false; 867 } 868 if (comp == NULL) { 869 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level); 870 return false; 871 } 872 873 // Check if compilation is blocking 874 methodHandle mh(THREAD, method); 875 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 876 bool is_blocking = !directive->BackgroundCompilationOption; 877 DirectivesStack::release(directive); 878 879 // Compile method and check result 880 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD); 881 MutexLockerEx mu(Compile_lock); 882 bool is_queued = mh->queued_for_compilation(); 883 if ((!is_blocking && is_queued) || nm != NULL) { 884 return true; 885 } 886 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level); 887 mh->print_short_name(tty); 888 tty->cr(); 889 if (is_blocking && is_queued) { 890 tty->print_cr("WB error: blocking compilation is still in queue!"); 891 } 892 return false; 893 } 894 895 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 896 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 897 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 898 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 899 WB_END 900 901 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 902 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 903 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD); 904 WB_END 905 906 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 907 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 908 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 909 910 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 911 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 912 bool result = directive->PrintAssemblyOption; 913 DirectivesStack::release(directive); 914 915 return result; 916 WB_END 917 918 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 919 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 920 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 921 922 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 923 924 ResourceMark rm; 925 const char* error_msg = NULL; 926 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 927 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 928 929 if (m == NULL) { 930 assert(error_msg != NULL, "Always have an error message"); 931 tty->print_cr("Got error: %s", error_msg); 932 return -1; // Pattern failed 933 } 934 935 // Pattern works - now check if it matches 936 int result; 937 if (m->match(mh, InlineMatcher::force_inline)) { 938 result = 2; // Force inline match 939 } else if (m->match(mh, InlineMatcher::dont_inline)) { 940 result = 1; // Dont inline match 941 } else { 942 result = 0; // No match 943 } 944 delete m; 945 return result; 946 WB_END 947 948 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 949 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 950 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 951 952 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 953 954 ResourceMark rm; 955 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 956 957 const char* error_msg = NULL; 958 959 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg); 960 if (m == NULL) { 961 assert(error_msg != NULL, "Must have error_msg"); 962 tty->print_cr("Got error: %s", error_msg); 963 return -1; 964 } 965 966 // Pattern works - now check if it matches 967 int result = m->matches(mh); 968 delete m; 969 assert(result == 0 || result == 1, "Result out of range"); 970 return result; 971 WB_END 972 973 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 974 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 975 CHECK_JNI_EXCEPTION(env); 976 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 977 MutexLockerEx mu(Compile_lock); 978 MethodData* mdo = mh->method_data(); 979 MethodCounters* mcs = mh->method_counters(); 980 981 if (mdo != NULL) { 982 mdo->init(); 983 ResourceMark rm; 984 int arg_count = mdo->method()->size_of_parameters(); 985 for (int i = 0; i < arg_count; i++) { 986 mdo->set_arg_modified(i, 0); 987 } 988 MutexLockerEx mu(mdo->extra_data_lock()); 989 mdo->clean_method_data(/*always_clean*/true); 990 } 991 992 mh->clear_not_c1_compilable(); 993 mh->clear_not_c2_compilable(); 994 mh->clear_not_c2_osr_compilable(); 995 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 996 if (mcs != NULL) { 997 mcs->backedge_counter()->init(); 998 mcs->invocation_counter()->init(); 999 mcs->set_interpreter_invocation_count(0); 1000 mcs->set_interpreter_throwout_count(0); 1001 1002 #ifdef TIERED 1003 mcs->set_rate(0.0F); 1004 mh->set_prev_event_count(0); 1005 mh->set_prev_time(0); 1006 #endif 1007 } 1008 WB_END 1009 1010 template <typename T> 1011 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const char*, T*, bool, bool)) { 1012 if (name == NULL) { 1013 return false; 1014 } 1015 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1016 const char* flag_name = env->GetStringUTFChars(name, NULL); 1017 CHECK_JNI_EXCEPTION_(env, false); 1018 JVMFlag::Error result = (*TAt)(flag_name, value, true, true); 1019 env->ReleaseStringUTFChars(name, flag_name); 1020 return (result == JVMFlag::SUCCESS); 1021 } 1022 1023 template <typename T> 1024 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(const char*, T*, JVMFlag::Flags)) { 1025 if (name == NULL) { 1026 return false; 1027 } 1028 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1029 const char* flag_name = env->GetStringUTFChars(name, NULL); 1030 CHECK_JNI_EXCEPTION_(env, false); 1031 JVMFlag::Error result = (*TAtPut)(flag_name, value, JVMFlag::INTERNAL); 1032 env->ReleaseStringUTFChars(name, flag_name); 1033 return (result == JVMFlag::SUCCESS); 1034 } 1035 1036 template <typename T> 1037 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1038 ResourceMark rm(thread); 1039 jclass clazz = env->FindClass(name->as_C_string()); 1040 CHECK_JNI_EXCEPTION_(env, NULL); 1041 jmethodID methodID = env->GetStaticMethodID(clazz, 1042 vmSymbols::valueOf_name()->as_C_string(), 1043 sig->as_C_string()); 1044 CHECK_JNI_EXCEPTION_(env, NULL); 1045 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1046 CHECK_JNI_EXCEPTION_(env, NULL); 1047 return result; 1048 } 1049 1050 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1051 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1052 } 1053 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1054 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1055 } 1056 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1057 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1058 } 1059 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1060 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1061 }*/ 1062 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1063 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1064 } 1065 1066 static JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1067 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1068 const char* flag_name = env->GetStringUTFChars(name, NULL); 1069 CHECK_JNI_EXCEPTION_(env, NULL); 1070 JVMFlag* result = JVMFlag::find_flag(flag_name, strlen(flag_name), true, true); 1071 env->ReleaseStringUTFChars(name, flag_name); 1072 return result; 1073 } 1074 1075 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1076 JVMFlag* flag = getVMFlag(thread, env, name); 1077 return (flag != NULL) && flag->is_constant_in_binary(); 1078 WB_END 1079 1080 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1081 JVMFlag* flag = getVMFlag(thread, env, name); 1082 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 1083 WB_END 1084 1085 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1086 bool result; 1087 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) { 1088 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1089 return booleanBox(thread, env, result); 1090 } 1091 return NULL; 1092 WB_END 1093 1094 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1095 int result; 1096 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) { 1097 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1098 return longBox(thread, env, result); 1099 } 1100 return NULL; 1101 WB_END 1102 1103 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1104 uint result; 1105 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) { 1106 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1107 return longBox(thread, env, result); 1108 } 1109 return NULL; 1110 WB_END 1111 1112 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1113 intx result; 1114 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) { 1115 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1116 return longBox(thread, env, result); 1117 } 1118 return NULL; 1119 WB_END 1120 1121 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1122 uintx result; 1123 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) { 1124 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1125 return longBox(thread, env, result); 1126 } 1127 return NULL; 1128 WB_END 1129 1130 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1131 uint64_t result; 1132 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) { 1133 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1134 return longBox(thread, env, result); 1135 } 1136 return NULL; 1137 WB_END 1138 1139 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1140 size_t result; 1141 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) { 1142 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1143 return longBox(thread, env, result); 1144 } 1145 return NULL; 1146 WB_END 1147 1148 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1149 double result; 1150 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) { 1151 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1152 return doubleBox(thread, env, result); 1153 } 1154 return NULL; 1155 WB_END 1156 1157 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1158 ccstr ccstrResult; 1159 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) { 1160 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1161 jstring result = env->NewStringUTF(ccstrResult); 1162 CHECK_JNI_EXCEPTION_(env, NULL); 1163 return result; 1164 } 1165 return NULL; 1166 WB_END 1167 1168 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1169 bool result = value == JNI_TRUE ? true : false; 1170 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut); 1171 WB_END 1172 1173 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1174 int result = value; 1175 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut); 1176 WB_END 1177 1178 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1179 uint result = value; 1180 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut); 1181 WB_END 1182 1183 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1184 intx result = value; 1185 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut); 1186 WB_END 1187 1188 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1189 uintx result = value; 1190 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut); 1191 WB_END 1192 1193 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1194 uint64_t result = value; 1195 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut); 1196 WB_END 1197 1198 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1199 size_t result = value; 1200 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut); 1201 WB_END 1202 1203 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1204 double result = value; 1205 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut); 1206 WB_END 1207 1208 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1209 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1210 const char* ccstrValue; 1211 if (value == NULL) { 1212 ccstrValue = NULL; 1213 } 1214 else { 1215 ccstrValue = env->GetStringUTFChars(value, NULL); 1216 CHECK_JNI_EXCEPTION(env); 1217 } 1218 ccstr ccstrResult = ccstrValue; 1219 bool needFree; 1220 { 1221 ThreadInVMfromNative ttvfn(thread); // back to VM 1222 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut); 1223 } 1224 if (value != NULL) { 1225 env->ReleaseStringUTFChars(value, ccstrValue); 1226 } 1227 if (needFree) { 1228 FREE_C_HEAP_ARRAY(char, ccstrResult); 1229 } 1230 WB_END 1231 1232 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1233 WhiteBox::compilation_locked = true; 1234 WB_END 1235 1236 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1237 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1238 WhiteBox::compilation_locked = false; 1239 mo.notify_all(); 1240 WB_END 1241 1242 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 1243 // Force a code cache sweep and block until it finished 1244 NMethodSweeper::force_sweep(); 1245 WB_END 1246 1247 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1248 ResourceMark rm(THREAD); 1249 int len; 1250 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1251 return (StringTable::lookup(name, len) != NULL); 1252 WB_END 1253 1254 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1255 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1256 Universe::heap()->collect(GCCause::_wb_full_gc); 1257 #if INCLUDE_G1GC 1258 if (UseG1GC) { 1259 // Needs to be cleared explicitly for G1 1260 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1261 } 1262 #endif // INCLUDE_G1GC 1263 WB_END 1264 1265 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1266 Universe::heap()->collect(GCCause::_wb_young_gc); 1267 WB_END 1268 1269 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1270 // static+volatile in order to force the read to happen 1271 // (not be eliminated by the compiler) 1272 static char c; 1273 static volatile char* p; 1274 1275 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 1276 if (p == NULL) { 1277 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1278 } 1279 1280 c = *p; 1281 WB_END 1282 1283 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1284 const char* features = VM_Version::features_string(); 1285 ThreadToNativeFromVM ttn(thread); 1286 jstring features_string = env->NewStringUTF(features); 1287 1288 CHECK_JNI_EXCEPTION_(env, NULL); 1289 1290 return features_string; 1291 WB_END 1292 1293 int WhiteBox::get_blob_type(const CodeBlob* code) { 1294 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1295 if (code->is_aot()) { 1296 return -1; 1297 } 1298 return CodeCache::get_code_heap(code)->code_blob_type(); 1299 } 1300 1301 CodeHeap* WhiteBox::get_code_heap(int blob_type) { 1302 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1303 return CodeCache::get_code_heap(blob_type); 1304 } 1305 1306 struct CodeBlobStub { 1307 CodeBlobStub(const CodeBlob* blob) : 1308 name(os::strdup(blob->name())), 1309 size(blob->size()), 1310 blob_type(WhiteBox::get_blob_type(blob)), 1311 address((jlong) blob) { } 1312 ~CodeBlobStub() { os::free((void*) name); } 1313 const char* const name; 1314 const jint size; 1315 const jint blob_type; 1316 const jlong address; 1317 }; 1318 1319 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1320 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1321 CHECK_JNI_EXCEPTION_(env, NULL); 1322 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1323 1324 jstring name = env->NewStringUTF(cb->name); 1325 CHECK_JNI_EXCEPTION_(env, NULL); 1326 env->SetObjectArrayElement(result, 0, name); 1327 1328 jobject obj = integerBox(thread, env, cb->size); 1329 CHECK_JNI_EXCEPTION_(env, NULL); 1330 env->SetObjectArrayElement(result, 1, obj); 1331 1332 obj = integerBox(thread, env, cb->blob_type); 1333 CHECK_JNI_EXCEPTION_(env, NULL); 1334 env->SetObjectArrayElement(result, 2, obj); 1335 1336 obj = longBox(thread, env, cb->address); 1337 CHECK_JNI_EXCEPTION_(env, NULL); 1338 env->SetObjectArrayElement(result, 3, obj); 1339 1340 return result; 1341 } 1342 1343 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1344 ResourceMark rm(THREAD); 1345 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1346 CHECK_JNI_EXCEPTION_(env, NULL); 1347 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1348 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1349 jobjectArray result = NULL; 1350 if (code == NULL) { 1351 return result; 1352 } 1353 int comp_level = code->comp_level(); 1354 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size(); 1355 1356 ThreadToNativeFromVM ttn(thread); 1357 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1358 CHECK_JNI_EXCEPTION_(env, NULL); 1359 result = env->NewObjectArray(5, clazz, NULL); 1360 if (result == NULL) { 1361 return result; 1362 } 1363 1364 CodeBlobStub stub(code); 1365 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1366 CHECK_JNI_EXCEPTION_(env, NULL); 1367 env->SetObjectArrayElement(result, 0, codeBlob); 1368 1369 jobject level = integerBox(thread, env, comp_level); 1370 CHECK_JNI_EXCEPTION_(env, NULL); 1371 env->SetObjectArrayElement(result, 1, level); 1372 1373 jbyteArray insts = env->NewByteArray(insts_size); 1374 CHECK_JNI_EXCEPTION_(env, NULL); 1375 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1376 env->SetObjectArrayElement(result, 2, insts); 1377 1378 jobject id = integerBox(thread, env, code->compile_id()); 1379 CHECK_JNI_EXCEPTION_(env, NULL); 1380 env->SetObjectArrayElement(result, 3, id); 1381 1382 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1383 CHECK_JNI_EXCEPTION_(env, NULL); 1384 env->SetObjectArrayElement(result, 4, entry_point); 1385 1386 return result; 1387 WB_END 1388 1389 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1390 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1391 BufferBlob* blob; 1392 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1393 if (full_size < size) { 1394 full_size += align_up(size - full_size, oopSize); 1395 } 1396 { 1397 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1398 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1399 if (blob != NULL) { 1400 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1401 } 1402 } 1403 // Track memory usage statistic after releasing CodeCache_lock 1404 MemoryService::track_code_cache_memory_usage(); 1405 return blob; 1406 } 1407 1408 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1409 if (size < 0) { 1410 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1411 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1412 } 1413 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1414 WB_END 1415 1416 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1417 if (addr == 0) { 1418 return; 1419 } 1420 BufferBlob::free((BufferBlob*) addr); 1421 WB_END 1422 1423 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1424 ResourceMark rm; 1425 GrowableArray<CodeBlobStub*> blobs; 1426 { 1427 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1428 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1429 if (heap == NULL) { 1430 return NULL; 1431 } 1432 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1433 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1434 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1435 new (stub) CodeBlobStub(cb); 1436 blobs.append(stub); 1437 } 1438 } 1439 if (blobs.length() == 0) { 1440 return NULL; 1441 } 1442 ThreadToNativeFromVM ttn(thread); 1443 jobjectArray result = NULL; 1444 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1445 CHECK_JNI_EXCEPTION_(env, NULL); 1446 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1447 CHECK_JNI_EXCEPTION_(env, NULL); 1448 if (result == NULL) { 1449 return result; 1450 } 1451 int i = 0; 1452 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1453 it != blobs.end(); ++it) { 1454 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1455 CHECK_JNI_EXCEPTION_(env, NULL); 1456 env->SetObjectArrayElement(result, i, obj); 1457 CHECK_JNI_EXCEPTION_(env, NULL); 1458 ++i; 1459 } 1460 return result; 1461 WB_END 1462 1463 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1464 return CompileBroker::get_compilation_activity_mode(); 1465 WB_END 1466 1467 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1468 if (addr == 0) { 1469 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1470 "WB_GetCodeBlob: addr is null"); 1471 } 1472 ThreadToNativeFromVM ttn(thread); 1473 CodeBlobStub stub((CodeBlob*) addr); 1474 return codeBlob2objectArray(thread, env, &stub); 1475 WB_END 1476 1477 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1478 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1479 CHECK_JNI_EXCEPTION_(env, 0); 1480 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1481 return (jlong) mh->method_data(); 1482 WB_END 1483 1484 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1485 return (jlong) Thread::current()->stack_size(); 1486 WB_END 1487 1488 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1489 JavaThread* t = JavaThread::current(); 1490 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size(); 1491 WB_END 1492 1493 1494 int WhiteBox::array_bytes_to_length(size_t bytes) { 1495 return Array<u1>::bytes_to_length(bytes); 1496 } 1497 1498 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1499 if (size < 0) { 1500 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1501 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1502 } 1503 1504 oop class_loader_oop = JNIHandles::resolve(class_loader); 1505 ClassLoaderData* cld = class_loader_oop != NULL 1506 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1507 : ClassLoaderData::the_null_class_loader_data(); 1508 1509 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1510 1511 return (jlong)(uintptr_t)metadata; 1512 WB_END 1513 1514 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 1515 oop class_loader_oop = JNIHandles::resolve(class_loader); 1516 ClassLoaderData* cld = class_loader_oop != NULL 1517 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1518 : ClassLoaderData::the_null_class_loader_data(); 1519 1520 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 1521 WB_END 1522 1523 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1524 jstring version, jstring location, jobjectArray packages)) 1525 ResourceMark rm(THREAD); 1526 1527 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages)); 1528 objArrayHandle packages_h(THREAD, packages_oop); 1529 int num_packages = (packages_h == NULL ? 0 : packages_h->length()); 1530 1531 char** pkgs = NULL; 1532 if (num_packages > 0) { 1533 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages); 1534 for (int x = 0; x < num_packages; x++) { 1535 oop pkg_str = packages_h->obj_at(x); 1536 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) { 1537 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 1538 err_msg("Bad package name")); 1539 } 1540 pkgs[x] = java_lang_String::as_utf8_string(pkg_str); 1541 } 1542 } 1543 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK); 1544 WB_END 1545 1546 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1547 ResourceMark rm(THREAD); 1548 char* package_name = NULL; 1549 if (package != NULL) { 1550 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1551 } 1552 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK); 1553 WB_END 1554 1555 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1556 ResourceMark rm(THREAD); 1557 char* package_name = NULL; 1558 if (package != NULL) { 1559 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1560 } 1561 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK); 1562 WB_END 1563 1564 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1565 ResourceMark rm(THREAD); 1566 char* package_name = NULL; 1567 if (package != NULL) { 1568 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1569 } 1570 Modules::add_module_exports(module, package_name, NULL, CHECK); 1571 WB_END 1572 1573 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1574 Modules::add_reads_module(from_module, source_module, CHECK); 1575 WB_END 1576 1577 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1578 if (inc < 0) { 1579 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1580 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1581 } 1582 1583 jlong max_size_t = (jlong) ((size_t) -1); 1584 if (inc > max_size_t) { 1585 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1586 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1587 } 1588 1589 size_t new_cap_until_GC = 0; 1590 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1591 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1592 if (!success) { 1593 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1594 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1595 "due to contention with another thread"); 1596 } 1597 return (jlong) new_cap_until_GC; 1598 WB_END 1599 1600 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1601 return (jlong) MetaspaceGC::capacity_until_GC(); 1602 WB_END 1603 1604 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb)) 1605 return MetaspaceGC::should_concurrent_collect(); 1606 WB_END 1607 1608 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb)) 1609 return (jlong)Metaspace::reserve_alignment(); 1610 WB_END 1611 1612 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue)) 1613 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ? 1614 Monitor::_safepoint_check_always : 1615 Monitor::_safepoint_check_never; 1616 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required), 1617 attemptedNoSafepointValue == JNI_TRUE); 1618 WB_END 1619 1620 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1621 oop obj_oop = JNIHandles::resolve(obj); 1622 return (jboolean) obj_oop->mark()->has_monitor(); 1623 WB_END 1624 1625 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1626 VM_ForceSafepoint force_safepoint_op; 1627 VMThread::execute(&force_safepoint_op); 1628 WB_END 1629 1630 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1631 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1632 return (jlong) ik->constants(); 1633 WB_END 1634 1635 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1636 return ConstantPool::CPCACHE_INDEX_TAG; 1637 WB_END 1638 1639 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1640 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1641 ConstantPool* cp = ik->constants(); 1642 if (cp->cache() == NULL) { 1643 return -1; 1644 } 1645 return cp->cache()->length(); 1646 WB_END 1647 1648 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1649 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1650 ConstantPool* cp = ik->constants(); 1651 if (cp->cache() == NULL) { 1652 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1653 } 1654 jint cpci = index; 1655 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1656 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1657 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1658 } 1659 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1660 return cpi; 1661 WB_END 1662 1663 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1664 return ConstantPool::encode_invokedynamic_index(index); 1665 WB_END 1666 1667 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1668 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1669 VMThread::execute(&clear_ics); 1670 WB_END 1671 1672 template <typename T> 1673 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1674 assert(value != NULL, "sanity"); 1675 if (method == NULL || name == NULL) { 1676 return false; 1677 } 1678 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1679 CHECK_JNI_EXCEPTION_(env, false); 1680 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1681 // can't be in VM when we call JNI 1682 ThreadToNativeFromVM ttnfv(thread); 1683 const char* flag_name = env->GetStringUTFChars(name, NULL); 1684 CHECK_JNI_EXCEPTION_(env, false); 1685 bool result = CompilerOracle::has_option_value(mh, flag_name, *value); 1686 env->ReleaseStringUTFChars(name, flag_name); 1687 return result; 1688 } 1689 1690 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1691 bool result; 1692 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1693 // can't be in VM when we call JNI 1694 ThreadToNativeFromVM ttnfv(thread); 1695 return booleanBox(thread, env, result); 1696 } 1697 return NULL; 1698 WB_END 1699 1700 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1701 intx result; 1702 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1703 // can't be in VM when we call JNI 1704 ThreadToNativeFromVM ttnfv(thread); 1705 return longBox(thread, env, result); 1706 } 1707 return NULL; 1708 WB_END 1709 1710 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1711 uintx result; 1712 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1713 // can't be in VM when we call JNI 1714 ThreadToNativeFromVM ttnfv(thread); 1715 return longBox(thread, env, result); 1716 } 1717 return NULL; 1718 WB_END 1719 1720 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1721 double result; 1722 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1723 // can't be in VM when we call JNI 1724 ThreadToNativeFromVM ttnfv(thread); 1725 return doubleBox(thread, env, result); 1726 } 1727 return NULL; 1728 WB_END 1729 1730 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1731 ccstr ccstrResult; 1732 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 1733 // can't be in VM when we call JNI 1734 ThreadToNativeFromVM ttnfv(thread); 1735 jstring result = env->NewStringUTF(ccstrResult); 1736 CHECK_JNI_EXCEPTION_(env, NULL); 1737 return result; 1738 } 1739 return NULL; 1740 WB_END 1741 1742 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 1743 oop obj_oop = JNIHandles::resolve(obj); 1744 return MetaspaceShared::is_archive_object(obj_oop); 1745 WB_END 1746 1747 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 1748 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1749 WB_END 1750 1751 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env)) 1752 return !StringTable::shared_string_mapped(); 1753 WB_END 1754 1755 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz)) 1756 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 1757 if (k->is_instance_klass()) { 1758 InstanceKlass *ik = InstanceKlass::cast(k); 1759 ConstantPool *cp = ik->constants(); 1760 objArrayOop refs = cp->resolved_references(); 1761 return (jobject)JNIHandles::make_local(env, refs); 1762 } else { 1763 return NULL; 1764 } 1765 WB_END 1766 1767 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 1768 return MetaspaceShared::open_archive_heap_region_mapped(); 1769 WB_END 1770 1771 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env)) 1772 #if INCLUDE_CDS 1773 # ifdef _LP64 1774 if (!UseCompressedOops || !UseCompressedClassPointers) { 1775 // On 64-bit VMs, CDS is supported only with compressed oops/pointers 1776 return false; 1777 } 1778 # endif // _LP64 1779 return true; 1780 #else 1781 return false; 1782 #endif // INCLUDE_CDS 1783 WB_END 1784 1785 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env)) 1786 return MetaspaceShared::is_heap_object_archiving_allowed(); 1787 WB_END 1788 1789 1790 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env)) 1791 #if INCLUDE_JFR 1792 return true; 1793 #else 1794 return false; 1795 #endif // INCLUDE_JFR 1796 WB_END 1797 1798 #if INCLUDE_CDS 1799 1800 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name)) 1801 ResourceMark rm; 1802 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 1803 int result = CDSOffsets::find_offset(c_name); 1804 return (jint)result; 1805 WB_END 1806 1807 #endif // INCLUDE_CDS 1808 1809 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 1810 class TraceSelfClosure : public ThreadClosure { 1811 jint _num_threads_completed; 1812 1813 void do_thread(Thread* th) { 1814 assert(th->is_Java_thread(), "sanity"); 1815 JavaThread* jt = (JavaThread*)th; 1816 ResourceMark rm; 1817 1818 jt->print_on(tty); 1819 jt->print_stack_on(tty); 1820 tty->cr(); 1821 Atomic::inc(&_num_threads_completed); 1822 } 1823 1824 public: 1825 TraceSelfClosure() : _num_threads_completed(0) {} 1826 1827 jint num_threads_completed() const { return _num_threads_completed; } 1828 }; 1829 TraceSelfClosure tsc; 1830 1831 if (all_threads) { 1832 Handshake::execute(&tsc); 1833 } else { 1834 oop thread_oop = JNIHandles::resolve(thread_handle); 1835 if (thread_oop != NULL) { 1836 JavaThread* target = java_lang_Thread::thread(thread_oop); 1837 Handshake::execute(&tsc, target); 1838 } 1839 } 1840 return tsc.num_threads_completed(); 1841 WB_END 1842 1843 //Some convenience methods to deal with objects from java 1844 int WhiteBox::offset_for_field(const char* field_name, oop object, 1845 Symbol* signature_symbol) { 1846 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 1847 Thread* THREAD = Thread::current(); 1848 1849 //Get the class of our object 1850 Klass* arg_klass = object->klass(); 1851 //Turn it into an instance-klass 1852 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 1853 1854 //Create symbols to look for in the class 1855 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), 1856 THREAD); 1857 1858 //To be filled in with an offset of the field we're looking for 1859 fieldDescriptor fd; 1860 1861 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 1862 if (res == NULL) { 1863 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 1864 name_symbol->as_C_string()); 1865 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 1866 } 1867 1868 //fetch the field at the offset we've found 1869 int dest_offset = fd.offset(); 1870 1871 return dest_offset; 1872 } 1873 1874 1875 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 1876 int offset = offset_for_field(field_name, object, 1877 vmSymbols::string_signature()); 1878 oop string = object->obj_field(offset); 1879 if (string == NULL) { 1880 return NULL; 1881 } 1882 const char* ret = java_lang_String::as_utf8_string(string); 1883 return ret; 1884 } 1885 1886 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 1887 int offset = 1888 offset_for_field(field_name, object, vmSymbols::bool_signature()); 1889 bool ret = (object->bool_field(offset) == JNI_TRUE); 1890 return ret; 1891 } 1892 1893 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 1894 ResourceMark rm; 1895 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1896 1897 // one by one registration natives for exception catching 1898 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 1899 CHECK_JNI_EXCEPTION(env); 1900 for (int i = 0, n = method_count; i < n; ++i) { 1901 // Skip dummy entries 1902 if (method_array[i].fnPtr == NULL) continue; 1903 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 1904 jthrowable throwable_obj = env->ExceptionOccurred(); 1905 if (throwable_obj != NULL) { 1906 env->ExceptionClear(); 1907 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 1908 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 1909 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 1910 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 1911 method_array[i].name, method_array[i].signature); 1912 } 1913 } else { 1914 // Registration failed unexpectedly. 1915 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 1916 method_array[i].name, method_array[i].signature); 1917 env->UnregisterNatives(wbclass); 1918 break; 1919 } 1920 } 1921 } 1922 } 1923 1924 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 1925 // can't be in VM when we call JNI 1926 ThreadToNativeFromVM ttnfv(thread); 1927 const char* dir = env->GetStringUTFChars(compDirect, NULL); 1928 CHECK_JNI_EXCEPTION_(env, 0); 1929 int ret; 1930 { 1931 ThreadInVMfromNative ttvfn(thread); // back to VM 1932 ret = DirectivesParser::parse_string(dir, tty); 1933 } 1934 env->ReleaseStringUTFChars(compDirect, dir); 1935 // -1 for error parsing directive. Return 0 as number of directives added. 1936 if (ret == -1) { 1937 ret = 0; 1938 } 1939 return (jint) ret; 1940 WB_END 1941 1942 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 1943 DirectivesStack::pop(count); 1944 WB_END 1945 1946 // Checks that the library libfile has the noexecstack bit set. 1947 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 1948 jboolean ret = false; 1949 #ifdef LINUX 1950 // Can't be in VM when we call JNI. 1951 ThreadToNativeFromVM ttnfv(thread); 1952 const char* lf = env->GetStringUTFChars(libfile, NULL); 1953 CHECK_JNI_EXCEPTION_(env, 0); 1954 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 1955 env->ReleaseStringUTFChars(libfile, lf); 1956 #endif 1957 return ret; 1958 WB_END 1959 1960 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 1961 LINUX_ONLY(return OSContainer::is_containerized();) 1962 return false; 1963 WB_END 1964 1965 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 1966 os::print_os_info(tty); 1967 WB_END 1968 1969 // Elf decoder 1970 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 1971 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 1972 ElfFile::_do_not_cache_elf_section = true; 1973 #endif 1974 WB_END 1975 1976 WB_ENTRY(jint, WB_ResolvedMethodRemovedCount(JNIEnv* env, jobject o)) 1977 return (jint) ResolvedMethodTable::removed_entries_count(); 1978 WB_END 1979 1980 1981 #define CC (char*) 1982 1983 static JNINativeMethod methods[] = { 1984 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 1985 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 1986 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 1987 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 1988 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 1989 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 1990 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 1991 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 1992 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 1993 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, 1994 {CC"parseCommandLine0", 1995 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 1996 (void*) &WB_ParseCommandLine 1997 }, 1998 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1999 (void*)&WB_AddToBootstrapClassLoaderSearch}, 2000 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2001 (void*)&WB_AddToSystemClassLoaderSearch}, 2002 {CC"getCompressedOopsMaxHeapSize", CC"()J", 2003 (void*)&WB_GetCompressedOopsMaxHeapSize}, 2004 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 2005 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 2006 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 2007 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 2008 #if INCLUDE_CDS 2009 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName}, 2010 #endif 2011 #if INCLUDE_G1GC 2012 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 2013 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 2014 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 2015 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 2016 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 2017 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 2018 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 2019 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 2020 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 2021 (void*)&WB_G1AuxiliaryMemoryUsage }, 2022 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 2023 #endif // INCLUDE_G1GC 2024 #if INCLUDE_PARALLELGC 2025 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 2026 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 2027 #endif 2028 #if INCLUDE_NMT 2029 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 2030 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 2031 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 2032 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 2033 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 2034 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 2035 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 2036 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 2037 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 2038 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 2039 #endif // INCLUDE_NMT 2040 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 2041 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 2042 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 2043 (void*)&WB_DeoptimizeMethod }, 2044 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 2045 (void*)&WB_IsMethodCompiled }, 2046 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 2047 (void*)&WB_IsMethodCompilable}, 2048 {CC"isMethodQueuedForCompilation0", 2049 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 2050 {CC"isIntrinsicAvailable0", 2051 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2052 (void*)&WB_IsIntrinsicAvailable}, 2053 {CC"makeMethodNotCompilable0", 2054 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2055 {CC"testSetDontInlineMethod0", 2056 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2057 {CC"getMethodCompilationLevel0", 2058 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2059 {CC"getMethodEntryBci0", 2060 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2061 {CC"getCompileQueueSize", 2062 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2063 {CC"testSetForceInlineMethod0", 2064 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2065 {CC"enqueueMethodForCompilation0", 2066 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2067 {CC"enqueueInitializerForCompilation0", 2068 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2069 {CC"clearMethodState0", 2070 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2071 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2072 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2073 {CC"matchesMethod", 2074 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2075 (void*)&WB_MatchesMethod}, 2076 {CC"matchesInline", 2077 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2078 (void*)&WB_MatchesInline}, 2079 {CC"shouldPrintAssembly", 2080 CC"(Ljava/lang/reflect/Executable;I)Z", 2081 (void*)&WB_ShouldPrintAssembly}, 2082 2083 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2084 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2085 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2086 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2087 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2088 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2089 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2090 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2091 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2092 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2093 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2094 (void*)&WB_SetStringVMFlag}, 2095 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2096 (void*)&WB_GetBooleanVMFlag}, 2097 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2098 (void*)&WB_GetIntVMFlag}, 2099 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2100 (void*)&WB_GetUintVMFlag}, 2101 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2102 (void*)&WB_GetIntxVMFlag}, 2103 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2104 (void*)&WB_GetUintxVMFlag}, 2105 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2106 (void*)&WB_GetUint64VMFlag}, 2107 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2108 (void*)&WB_GetSizeTVMFlag}, 2109 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2110 (void*)&WB_GetDoubleVMFlag}, 2111 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2112 (void*)&WB_GetStringVMFlag}, 2113 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2114 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2115 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2116 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2117 {CC"allocateMetaspace", 2118 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2119 {CC"freeMetaspace", 2120 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 2121 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2122 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2123 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect }, 2124 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment }, 2125 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2126 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2127 (void*)&WB_GetNMethod }, 2128 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 2129 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2130 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2131 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2132 {CC"getCompilationActivityMode", 2133 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2134 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2135 (void*)&WB_GetMethodData }, 2136 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2137 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2138 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2139 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2140 (void*)&WB_DefineModule }, 2141 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2142 (void*)&WB_AddModuleExports }, 2143 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2144 (void*)&WB_AddReadsModule }, 2145 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2146 (void*)&WB_AddModuleExportsToAllUnnamed }, 2147 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2148 (void*)&WB_AddModuleExportsToAll }, 2149 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls }, 2150 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2151 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2152 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2153 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 2154 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 2155 {CC"remapInstructionOperandFromCPCache0", 2156 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 2157 {CC"encodeConstantPoolIndyIndex0", 2158 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 2159 {CC"getMethodBooleanOption", 2160 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2161 (void*)&WB_GetMethodBooleaneOption}, 2162 {CC"getMethodIntxOption", 2163 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2164 (void*)&WB_GetMethodIntxOption}, 2165 {CC"getMethodUintxOption", 2166 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2167 (void*)&WB_GetMethodUintxOption}, 2168 {CC"getMethodDoubleOption", 2169 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2170 (void*)&WB_GetMethodDoubleOption}, 2171 {CC"getMethodStringOption", 2172 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2173 (void*)&WB_GetMethodStringOption}, 2174 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 2175 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2176 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored }, 2177 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 2178 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2179 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild }, 2180 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild }, 2181 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported }, 2182 2183 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2184 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2185 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2186 (void*)&WB_AddCompilerDirective }, 2187 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2188 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported}, 2189 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected}, 2190 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically}, 2191 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl}, 2192 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;", 2193 (void*)&WB_GetConcurrentGCPhases}, 2194 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z", 2195 (void*)&WB_RequestConcurrentGCPhase}, 2196 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2197 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2198 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2199 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2200 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 2201 {CC"resolvedMethodRemovedCount", CC"()I", (void*)&WB_ResolvedMethodRemovedCount }, 2202 }; 2203 2204 2205 #undef CC 2206 2207 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2208 { 2209 if (WhiteBoxAPI) { 2210 // Make sure that wbclass is loaded by the null classloader 2211 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass()); 2212 Handle loader(THREAD, ik->class_loader()); 2213 if (loader.is_null()) { 2214 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2215 WhiteBox::set_used(); 2216 } 2217 } 2218 } 2219 JVM_END