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