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