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) { 859 tty->print_cr("WB error: request to compile NULL method"); 860 return false; 861 } 862 if (comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 863 tty->print_cr("WB error: invalid compilation level %d", comp_level); 864 return false; 865 } 866 if (comp == NULL) { 867 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level); 868 return false; 869 } 870 871 // Check if compilation is blocking 872 methodHandle mh(THREAD, method); 873 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 874 bool is_blocking = !directive->BackgroundCompilationOption; 875 DirectivesStack::release(directive); 876 877 // Compile method and check result 878 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD); 879 MutexLockerEx mu(Compile_lock); 880 bool is_queued = mh->queued_for_compilation(); 881 if ((!is_blocking && is_queued) || nm != NULL) { 882 return true; 883 } 884 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level); 885 mh->print_short_name(tty); 886 tty->cr(); 887 if (is_blocking && is_queued) { 888 tty->print_cr("WB error: blocking compilation is still in queue!"); 889 } 890 return false; 891 } 892 893 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 894 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 895 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 896 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 897 WB_END 898 899 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 900 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 901 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD); 902 WB_END 903 904 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 905 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 906 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 907 908 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 909 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 910 bool result = directive->PrintAssemblyOption; 911 DirectivesStack::release(directive); 912 913 return result; 914 WB_END 915 916 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 917 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 918 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 919 920 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 921 922 ResourceMark rm; 923 const char* error_msg = NULL; 924 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 925 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 926 927 if (m == NULL) { 928 assert(error_msg != NULL, "Always have an error message"); 929 tty->print_cr("Got error: %s", error_msg); 930 return -1; // Pattern failed 931 } 932 933 // Pattern works - now check if it matches 934 int result; 935 if (m->match(mh, InlineMatcher::force_inline)) { 936 result = 2; // Force inline match 937 } else if (m->match(mh, InlineMatcher::dont_inline)) { 938 result = 1; // Dont inline match 939 } else { 940 result = 0; // No match 941 } 942 delete m; 943 return result; 944 WB_END 945 946 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 947 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 948 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 949 950 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 951 952 ResourceMark rm; 953 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 954 955 const char* error_msg = NULL; 956 957 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg); 958 if (m == NULL) { 959 assert(error_msg != NULL, "Must have error_msg"); 960 tty->print_cr("Got error: %s", error_msg); 961 return -1; 962 } 963 964 // Pattern works - now check if it matches 965 int result = m->matches(mh); 966 delete m; 967 assert(result == 0 || result == 1, "Result out of range"); 968 return result; 969 WB_END 970 971 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 972 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 973 CHECK_JNI_EXCEPTION(env); 974 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 975 MutexLockerEx mu(Compile_lock); 976 MethodData* mdo = mh->method_data(); 977 MethodCounters* mcs = mh->method_counters(); 978 979 if (mdo != NULL) { 980 mdo->init(); 981 ResourceMark rm; 982 int arg_count = mdo->method()->size_of_parameters(); 983 for (int i = 0; i < arg_count; i++) { 984 mdo->set_arg_modified(i, 0); 985 } 986 MutexLockerEx mu(mdo->extra_data_lock()); 987 mdo->clean_method_data(/*always_clean*/true); 988 } 989 990 mh->clear_not_c1_compilable(); 991 mh->clear_not_c2_compilable(); 992 mh->clear_not_c2_osr_compilable(); 993 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 994 if (mcs != NULL) { 995 mcs->backedge_counter()->init(); 996 mcs->invocation_counter()->init(); 997 mcs->set_interpreter_invocation_count(0); 998 mcs->set_interpreter_throwout_count(0); 999 1000 #ifdef TIERED 1001 mcs->set_rate(0.0F); 1002 mh->set_prev_event_count(0); 1003 mh->set_prev_time(0); 1004 #endif 1005 } 1006 WB_END 1007 1008 template <typename T> 1009 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const char*, T*, bool, bool)) { 1010 if (name == NULL) { 1011 return false; 1012 } 1013 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1014 const char* flag_name = env->GetStringUTFChars(name, NULL); 1015 CHECK_JNI_EXCEPTION_(env, false); 1016 JVMFlag::Error result = (*TAt)(flag_name, value, true, true); 1017 env->ReleaseStringUTFChars(name, flag_name); 1018 return (result == JVMFlag::SUCCESS); 1019 } 1020 1021 template <typename T> 1022 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(const char*, T*, JVMFlag::Flags)) { 1023 if (name == NULL) { 1024 return false; 1025 } 1026 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1027 const char* flag_name = env->GetStringUTFChars(name, NULL); 1028 CHECK_JNI_EXCEPTION_(env, false); 1029 JVMFlag::Error result = (*TAtPut)(flag_name, value, JVMFlag::INTERNAL); 1030 env->ReleaseStringUTFChars(name, flag_name); 1031 return (result == JVMFlag::SUCCESS); 1032 } 1033 1034 template <typename T> 1035 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1036 ResourceMark rm(thread); 1037 jclass clazz = env->FindClass(name->as_C_string()); 1038 CHECK_JNI_EXCEPTION_(env, NULL); 1039 jmethodID methodID = env->GetStaticMethodID(clazz, 1040 vmSymbols::valueOf_name()->as_C_string(), 1041 sig->as_C_string()); 1042 CHECK_JNI_EXCEPTION_(env, NULL); 1043 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1044 CHECK_JNI_EXCEPTION_(env, NULL); 1045 return result; 1046 } 1047 1048 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1049 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1050 } 1051 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1052 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1053 } 1054 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1055 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1056 } 1057 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1058 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1059 }*/ 1060 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1061 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1062 } 1063 1064 static JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1065 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1066 const char* flag_name = env->GetStringUTFChars(name, NULL); 1067 CHECK_JNI_EXCEPTION_(env, NULL); 1068 JVMFlag* result = JVMFlag::find_flag(flag_name, strlen(flag_name), true, true); 1069 env->ReleaseStringUTFChars(name, flag_name); 1070 return result; 1071 } 1072 1073 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1074 JVMFlag* flag = getVMFlag(thread, env, name); 1075 return (flag != NULL) && flag->is_constant_in_binary(); 1076 WB_END 1077 1078 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1079 JVMFlag* flag = getVMFlag(thread, env, name); 1080 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 1081 WB_END 1082 1083 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1084 bool result; 1085 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) { 1086 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1087 return booleanBox(thread, env, result); 1088 } 1089 return NULL; 1090 WB_END 1091 1092 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1093 int result; 1094 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) { 1095 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1096 return longBox(thread, env, result); 1097 } 1098 return NULL; 1099 WB_END 1100 1101 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1102 uint result; 1103 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) { 1104 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1105 return longBox(thread, env, result); 1106 } 1107 return NULL; 1108 WB_END 1109 1110 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1111 intx result; 1112 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) { 1113 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1114 return longBox(thread, env, result); 1115 } 1116 return NULL; 1117 WB_END 1118 1119 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1120 uintx result; 1121 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) { 1122 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1123 return longBox(thread, env, result); 1124 } 1125 return NULL; 1126 WB_END 1127 1128 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1129 uint64_t result; 1130 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) { 1131 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1132 return longBox(thread, env, result); 1133 } 1134 return NULL; 1135 WB_END 1136 1137 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1138 size_t result; 1139 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) { 1140 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1141 return longBox(thread, env, result); 1142 } 1143 return NULL; 1144 WB_END 1145 1146 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1147 double result; 1148 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) { 1149 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1150 return doubleBox(thread, env, result); 1151 } 1152 return NULL; 1153 WB_END 1154 1155 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1156 ccstr ccstrResult; 1157 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) { 1158 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1159 jstring result = env->NewStringUTF(ccstrResult); 1160 CHECK_JNI_EXCEPTION_(env, NULL); 1161 return result; 1162 } 1163 return NULL; 1164 WB_END 1165 1166 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1167 bool result = value == JNI_TRUE ? true : false; 1168 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut); 1169 WB_END 1170 1171 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1172 int result = value; 1173 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut); 1174 WB_END 1175 1176 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1177 uint result = value; 1178 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut); 1179 WB_END 1180 1181 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1182 intx result = value; 1183 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut); 1184 WB_END 1185 1186 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1187 uintx result = value; 1188 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut); 1189 WB_END 1190 1191 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1192 uint64_t result = value; 1193 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut); 1194 WB_END 1195 1196 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1197 size_t result = value; 1198 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut); 1199 WB_END 1200 1201 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1202 double result = value; 1203 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut); 1204 WB_END 1205 1206 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1207 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1208 const char* ccstrValue; 1209 if (value == NULL) { 1210 ccstrValue = NULL; 1211 } 1212 else { 1213 ccstrValue = env->GetStringUTFChars(value, NULL); 1214 CHECK_JNI_EXCEPTION(env); 1215 } 1216 ccstr ccstrResult = ccstrValue; 1217 bool needFree; 1218 { 1219 ThreadInVMfromNative ttvfn(thread); // back to VM 1220 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut); 1221 } 1222 if (value != NULL) { 1223 env->ReleaseStringUTFChars(value, ccstrValue); 1224 } 1225 if (needFree) { 1226 FREE_C_HEAP_ARRAY(char, ccstrResult); 1227 } 1228 WB_END 1229 1230 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1231 WhiteBox::compilation_locked = true; 1232 WB_END 1233 1234 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1235 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1236 WhiteBox::compilation_locked = false; 1237 mo.notify_all(); 1238 WB_END 1239 1240 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 1241 // Force a code cache sweep and block until it finished 1242 NMethodSweeper::force_sweep(); 1243 WB_END 1244 1245 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1246 ResourceMark rm(THREAD); 1247 int len; 1248 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1249 return (StringTable::lookup(name, len) != NULL); 1250 WB_END 1251 1252 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1253 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1254 Universe::heap()->collect(GCCause::_wb_full_gc); 1255 #if INCLUDE_G1GC 1256 if (UseG1GC) { 1257 // Needs to be cleared explicitly for G1 1258 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1259 } 1260 #endif // INCLUDE_G1GC 1261 WB_END 1262 1263 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1264 Universe::heap()->collect(GCCause::_wb_young_gc); 1265 WB_END 1266 1267 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1268 // static+volatile in order to force the read to happen 1269 // (not be eliminated by the compiler) 1270 static char c; 1271 static volatile char* p; 1272 1273 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 1274 if (p == NULL) { 1275 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1276 } 1277 1278 c = *p; 1279 WB_END 1280 1281 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1282 const char* features = VM_Version::features_string(); 1283 ThreadToNativeFromVM ttn(thread); 1284 jstring features_string = env->NewStringUTF(features); 1285 1286 CHECK_JNI_EXCEPTION_(env, NULL); 1287 1288 return features_string; 1289 WB_END 1290 1291 int WhiteBox::get_blob_type(const CodeBlob* code) { 1292 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1293 if (code->is_aot()) { 1294 return -1; 1295 } 1296 return CodeCache::get_code_heap(code)->code_blob_type(); 1297 } 1298 1299 CodeHeap* WhiteBox::get_code_heap(int blob_type) { 1300 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1301 return CodeCache::get_code_heap(blob_type); 1302 } 1303 1304 struct CodeBlobStub { 1305 CodeBlobStub(const CodeBlob* blob) : 1306 name(os::strdup(blob->name())), 1307 size(blob->size()), 1308 blob_type(WhiteBox::get_blob_type(blob)), 1309 address((jlong) blob) { } 1310 ~CodeBlobStub() { os::free((void*) name); } 1311 const char* const name; 1312 const jint size; 1313 const jint blob_type; 1314 const jlong address; 1315 }; 1316 1317 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1318 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1319 CHECK_JNI_EXCEPTION_(env, NULL); 1320 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1321 1322 jstring name = env->NewStringUTF(cb->name); 1323 CHECK_JNI_EXCEPTION_(env, NULL); 1324 env->SetObjectArrayElement(result, 0, name); 1325 1326 jobject obj = integerBox(thread, env, cb->size); 1327 CHECK_JNI_EXCEPTION_(env, NULL); 1328 env->SetObjectArrayElement(result, 1, obj); 1329 1330 obj = integerBox(thread, env, cb->blob_type); 1331 CHECK_JNI_EXCEPTION_(env, NULL); 1332 env->SetObjectArrayElement(result, 2, obj); 1333 1334 obj = longBox(thread, env, cb->address); 1335 CHECK_JNI_EXCEPTION_(env, NULL); 1336 env->SetObjectArrayElement(result, 3, obj); 1337 1338 return result; 1339 } 1340 1341 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1342 ResourceMark rm(THREAD); 1343 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1344 CHECK_JNI_EXCEPTION_(env, NULL); 1345 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1346 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1347 jobjectArray result = NULL; 1348 if (code == NULL) { 1349 return result; 1350 } 1351 int comp_level = code->comp_level(); 1352 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size(); 1353 1354 ThreadToNativeFromVM ttn(thread); 1355 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1356 CHECK_JNI_EXCEPTION_(env, NULL); 1357 result = env->NewObjectArray(5, clazz, NULL); 1358 if (result == NULL) { 1359 return result; 1360 } 1361 1362 CodeBlobStub stub(code); 1363 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1364 CHECK_JNI_EXCEPTION_(env, NULL); 1365 env->SetObjectArrayElement(result, 0, codeBlob); 1366 1367 jobject level = integerBox(thread, env, comp_level); 1368 CHECK_JNI_EXCEPTION_(env, NULL); 1369 env->SetObjectArrayElement(result, 1, level); 1370 1371 jbyteArray insts = env->NewByteArray(insts_size); 1372 CHECK_JNI_EXCEPTION_(env, NULL); 1373 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1374 env->SetObjectArrayElement(result, 2, insts); 1375 1376 jobject id = integerBox(thread, env, code->compile_id()); 1377 CHECK_JNI_EXCEPTION_(env, NULL); 1378 env->SetObjectArrayElement(result, 3, id); 1379 1380 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1381 CHECK_JNI_EXCEPTION_(env, NULL); 1382 env->SetObjectArrayElement(result, 4, entry_point); 1383 1384 return result; 1385 WB_END 1386 1387 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1388 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1389 BufferBlob* blob; 1390 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1391 if (full_size < size) { 1392 full_size += align_up(size - full_size, oopSize); 1393 } 1394 { 1395 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1396 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1397 if (blob != NULL) { 1398 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1399 } 1400 } 1401 // Track memory usage statistic after releasing CodeCache_lock 1402 MemoryService::track_code_cache_memory_usage(); 1403 return blob; 1404 } 1405 1406 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1407 if (size < 0) { 1408 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1409 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1410 } 1411 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1412 WB_END 1413 1414 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1415 if (addr == 0) { 1416 return; 1417 } 1418 BufferBlob::free((BufferBlob*) addr); 1419 WB_END 1420 1421 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1422 ResourceMark rm; 1423 GrowableArray<CodeBlobStub*> blobs; 1424 { 1425 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1426 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1427 if (heap == NULL) { 1428 return NULL; 1429 } 1430 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1431 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1432 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1433 new (stub) CodeBlobStub(cb); 1434 blobs.append(stub); 1435 } 1436 } 1437 if (blobs.length() == 0) { 1438 return NULL; 1439 } 1440 ThreadToNativeFromVM ttn(thread); 1441 jobjectArray result = NULL; 1442 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1443 CHECK_JNI_EXCEPTION_(env, NULL); 1444 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1445 CHECK_JNI_EXCEPTION_(env, NULL); 1446 if (result == NULL) { 1447 return result; 1448 } 1449 int i = 0; 1450 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1451 it != blobs.end(); ++it) { 1452 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1453 CHECK_JNI_EXCEPTION_(env, NULL); 1454 env->SetObjectArrayElement(result, i, obj); 1455 CHECK_JNI_EXCEPTION_(env, NULL); 1456 ++i; 1457 } 1458 return result; 1459 WB_END 1460 1461 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1462 return CompileBroker::get_compilation_activity_mode(); 1463 WB_END 1464 1465 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1466 if (addr == 0) { 1467 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1468 "WB_GetCodeBlob: addr is null"); 1469 } 1470 ThreadToNativeFromVM ttn(thread); 1471 CodeBlobStub stub((CodeBlob*) addr); 1472 return codeBlob2objectArray(thread, env, &stub); 1473 WB_END 1474 1475 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1476 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1477 CHECK_JNI_EXCEPTION_(env, 0); 1478 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1479 return (jlong) mh->method_data(); 1480 WB_END 1481 1482 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1483 return (jlong) Thread::current()->stack_size(); 1484 WB_END 1485 1486 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1487 JavaThread* t = JavaThread::current(); 1488 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size(); 1489 WB_END 1490 1491 1492 int WhiteBox::array_bytes_to_length(size_t bytes) { 1493 return Array<u1>::bytes_to_length(bytes); 1494 } 1495 1496 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1497 if (size < 0) { 1498 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1499 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1500 } 1501 1502 oop class_loader_oop = JNIHandles::resolve(class_loader); 1503 ClassLoaderData* cld = class_loader_oop != NULL 1504 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1505 : ClassLoaderData::the_null_class_loader_data(); 1506 1507 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1508 1509 return (jlong)(uintptr_t)metadata; 1510 WB_END 1511 1512 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 1513 oop class_loader_oop = JNIHandles::resolve(class_loader); 1514 ClassLoaderData* cld = class_loader_oop != NULL 1515 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1516 : ClassLoaderData::the_null_class_loader_data(); 1517 1518 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 1519 WB_END 1520 1521 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1522 jstring version, jstring location, jobjectArray packages)) 1523 ResourceMark rm(THREAD); 1524 1525 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages)); 1526 objArrayHandle packages_h(THREAD, packages_oop); 1527 int num_packages = (packages_h == NULL ? 0 : packages_h->length()); 1528 1529 char** pkgs = NULL; 1530 if (num_packages > 0) { 1531 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages); 1532 for (int x = 0; x < num_packages; x++) { 1533 oop pkg_str = packages_h->obj_at(x); 1534 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) { 1535 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 1536 err_msg("Bad package name")); 1537 } 1538 pkgs[x] = java_lang_String::as_utf8_string(pkg_str); 1539 } 1540 } 1541 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK); 1542 WB_END 1543 1544 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1545 ResourceMark rm(THREAD); 1546 char* package_name = NULL; 1547 if (package != NULL) { 1548 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1549 } 1550 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK); 1551 WB_END 1552 1553 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1554 ResourceMark rm(THREAD); 1555 char* package_name = NULL; 1556 if (package != NULL) { 1557 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1558 } 1559 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK); 1560 WB_END 1561 1562 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1563 ResourceMark rm(THREAD); 1564 char* package_name = NULL; 1565 if (package != NULL) { 1566 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1567 } 1568 Modules::add_module_exports(module, package_name, NULL, CHECK); 1569 WB_END 1570 1571 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1572 Modules::add_reads_module(from_module, source_module, CHECK); 1573 WB_END 1574 1575 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1576 if (inc < 0) { 1577 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1578 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1579 } 1580 1581 jlong max_size_t = (jlong) ((size_t) -1); 1582 if (inc > max_size_t) { 1583 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1584 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1585 } 1586 1587 size_t new_cap_until_GC = 0; 1588 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1589 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1590 if (!success) { 1591 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1592 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1593 "due to contention with another thread"); 1594 } 1595 return (jlong) new_cap_until_GC; 1596 WB_END 1597 1598 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1599 return (jlong) MetaspaceGC::capacity_until_GC(); 1600 WB_END 1601 1602 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb)) 1603 return MetaspaceGC::should_concurrent_collect(); 1604 WB_END 1605 1606 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb)) 1607 return (jlong)Metaspace::reserve_alignment(); 1608 WB_END 1609 1610 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue)) 1611 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ? 1612 Monitor::_safepoint_check_always : 1613 Monitor::_safepoint_check_never; 1614 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required), 1615 attemptedNoSafepointValue == JNI_TRUE); 1616 WB_END 1617 1618 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1619 oop obj_oop = JNIHandles::resolve(obj); 1620 return (jboolean) obj_oop->mark()->has_monitor(); 1621 WB_END 1622 1623 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1624 VM_ForceSafepoint force_safepoint_op; 1625 VMThread::execute(&force_safepoint_op); 1626 WB_END 1627 1628 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1629 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1630 return (jlong) ik->constants(); 1631 WB_END 1632 1633 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1634 return ConstantPool::CPCACHE_INDEX_TAG; 1635 WB_END 1636 1637 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1638 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1639 ConstantPool* cp = ik->constants(); 1640 if (cp->cache() == NULL) { 1641 return -1; 1642 } 1643 return cp->cache()->length(); 1644 WB_END 1645 1646 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1647 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1648 ConstantPool* cp = ik->constants(); 1649 if (cp->cache() == NULL) { 1650 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1651 } 1652 jint cpci = index; 1653 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1654 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1655 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1656 } 1657 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1658 return cpi; 1659 WB_END 1660 1661 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1662 return ConstantPool::encode_invokedynamic_index(index); 1663 WB_END 1664 1665 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1666 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1667 VMThread::execute(&clear_ics); 1668 WB_END 1669 1670 template <typename T> 1671 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1672 assert(value != NULL, "sanity"); 1673 if (method == NULL || name == NULL) { 1674 return false; 1675 } 1676 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1677 CHECK_JNI_EXCEPTION_(env, false); 1678 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1679 // can't be in VM when we call JNI 1680 ThreadToNativeFromVM ttnfv(thread); 1681 const char* flag_name = env->GetStringUTFChars(name, NULL); 1682 CHECK_JNI_EXCEPTION_(env, false); 1683 bool result = CompilerOracle::has_option_value(mh, flag_name, *value); 1684 env->ReleaseStringUTFChars(name, flag_name); 1685 return result; 1686 } 1687 1688 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1689 bool result; 1690 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1691 // can't be in VM when we call JNI 1692 ThreadToNativeFromVM ttnfv(thread); 1693 return booleanBox(thread, env, result); 1694 } 1695 return NULL; 1696 WB_END 1697 1698 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1699 intx result; 1700 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1701 // can't be in VM when we call JNI 1702 ThreadToNativeFromVM ttnfv(thread); 1703 return longBox(thread, env, result); 1704 } 1705 return NULL; 1706 WB_END 1707 1708 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1709 uintx result; 1710 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1711 // can't be in VM when we call JNI 1712 ThreadToNativeFromVM ttnfv(thread); 1713 return longBox(thread, env, result); 1714 } 1715 return NULL; 1716 WB_END 1717 1718 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1719 double result; 1720 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1721 // can't be in VM when we call JNI 1722 ThreadToNativeFromVM ttnfv(thread); 1723 return doubleBox(thread, env, result); 1724 } 1725 return NULL; 1726 WB_END 1727 1728 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1729 ccstr ccstrResult; 1730 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 1731 // can't be in VM when we call JNI 1732 ThreadToNativeFromVM ttnfv(thread); 1733 jstring result = env->NewStringUTF(ccstrResult); 1734 CHECK_JNI_EXCEPTION_(env, NULL); 1735 return result; 1736 } 1737 return NULL; 1738 WB_END 1739 1740 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 1741 oop obj_oop = JNIHandles::resolve(obj); 1742 return MetaspaceShared::is_archive_object(obj_oop); 1743 WB_END 1744 1745 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 1746 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1747 WB_END 1748 1749 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env)) 1750 return !StringTable::shared_string_mapped(); 1751 WB_END 1752 1753 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz)) 1754 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 1755 if (k->is_instance_klass()) { 1756 InstanceKlass *ik = InstanceKlass::cast(k); 1757 ConstantPool *cp = ik->constants(); 1758 objArrayOop refs = cp->resolved_references(); 1759 return (jobject)JNIHandles::make_local(env, refs); 1760 } else { 1761 return NULL; 1762 } 1763 WB_END 1764 1765 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 1766 return MetaspaceShared::open_archive_heap_region_mapped(); 1767 WB_END 1768 1769 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env)) 1770 #if INCLUDE_CDS 1771 # ifdef _LP64 1772 if (!UseCompressedOops || !UseCompressedClassPointers) { 1773 // On 64-bit VMs, CDS is supported only with compressed oops/pointers 1774 return false; 1775 } 1776 # endif // _LP64 1777 return true; 1778 #else 1779 return false; 1780 #endif // INCLUDE_CDS 1781 WB_END 1782 1783 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env)) 1784 return MetaspaceShared::is_heap_object_archiving_allowed(); 1785 WB_END 1786 1787 1788 #if INCLUDE_CDS 1789 1790 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name)) 1791 ResourceMark rm; 1792 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 1793 int result = CDSOffsets::find_offset(c_name); 1794 return (jint)result; 1795 WB_END 1796 1797 #endif // INCLUDE_CDS 1798 1799 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 1800 class TraceSelfClosure : public ThreadClosure { 1801 jint _num_threads_completed; 1802 1803 void do_thread(Thread* th) { 1804 assert(th->is_Java_thread(), "sanity"); 1805 JavaThread* jt = (JavaThread*)th; 1806 ResourceMark rm; 1807 1808 jt->print_on(tty); 1809 jt->print_stack_on(tty); 1810 tty->cr(); 1811 Atomic::inc(&_num_threads_completed); 1812 } 1813 1814 public: 1815 TraceSelfClosure() : _num_threads_completed(0) {} 1816 1817 jint num_threads_completed() const { return _num_threads_completed; } 1818 }; 1819 TraceSelfClosure tsc; 1820 1821 if (all_threads) { 1822 Handshake::execute(&tsc); 1823 } else { 1824 oop thread_oop = JNIHandles::resolve(thread_handle); 1825 if (thread_oop != NULL) { 1826 JavaThread* target = java_lang_Thread::thread(thread_oop); 1827 Handshake::execute(&tsc, target); 1828 } 1829 } 1830 return tsc.num_threads_completed(); 1831 WB_END 1832 1833 //Some convenience methods to deal with objects from java 1834 int WhiteBox::offset_for_field(const char* field_name, oop object, 1835 Symbol* signature_symbol) { 1836 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 1837 Thread* THREAD = Thread::current(); 1838 1839 //Get the class of our object 1840 Klass* arg_klass = object->klass(); 1841 //Turn it into an instance-klass 1842 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 1843 1844 //Create symbols to look for in the class 1845 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), 1846 THREAD); 1847 1848 //To be filled in with an offset of the field we're looking for 1849 fieldDescriptor fd; 1850 1851 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 1852 if (res == NULL) { 1853 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 1854 name_symbol->as_C_string()); 1855 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 1856 } 1857 1858 //fetch the field at the offset we've found 1859 int dest_offset = fd.offset(); 1860 1861 return dest_offset; 1862 } 1863 1864 1865 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 1866 int offset = offset_for_field(field_name, object, 1867 vmSymbols::string_signature()); 1868 oop string = object->obj_field(offset); 1869 if (string == NULL) { 1870 return NULL; 1871 } 1872 const char* ret = java_lang_String::as_utf8_string(string); 1873 return ret; 1874 } 1875 1876 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 1877 int offset = 1878 offset_for_field(field_name, object, vmSymbols::bool_signature()); 1879 bool ret = (object->bool_field(offset) == JNI_TRUE); 1880 return ret; 1881 } 1882 1883 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 1884 ResourceMark rm; 1885 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1886 1887 // one by one registration natives for exception catching 1888 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 1889 CHECK_JNI_EXCEPTION(env); 1890 for (int i = 0, n = method_count; i < n; ++i) { 1891 // Skip dummy entries 1892 if (method_array[i].fnPtr == NULL) continue; 1893 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 1894 jthrowable throwable_obj = env->ExceptionOccurred(); 1895 if (throwable_obj != NULL) { 1896 env->ExceptionClear(); 1897 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 1898 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 1899 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 1900 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 1901 method_array[i].name, method_array[i].signature); 1902 } 1903 } else { 1904 // Registration failed unexpectedly. 1905 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 1906 method_array[i].name, method_array[i].signature); 1907 env->UnregisterNatives(wbclass); 1908 break; 1909 } 1910 } 1911 } 1912 } 1913 1914 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 1915 // can't be in VM when we call JNI 1916 ThreadToNativeFromVM ttnfv(thread); 1917 const char* dir = env->GetStringUTFChars(compDirect, NULL); 1918 CHECK_JNI_EXCEPTION_(env, 0); 1919 int ret; 1920 { 1921 ThreadInVMfromNative ttvfn(thread); // back to VM 1922 ret = DirectivesParser::parse_string(dir, tty); 1923 } 1924 env->ReleaseStringUTFChars(compDirect, dir); 1925 // -1 for error parsing directive. Return 0 as number of directives added. 1926 if (ret == -1) { 1927 ret = 0; 1928 } 1929 return (jint) ret; 1930 WB_END 1931 1932 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 1933 DirectivesStack::pop(count); 1934 WB_END 1935 1936 // Checks that the library libfile has the noexecstack bit set. 1937 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 1938 jboolean ret = false; 1939 #ifdef LINUX 1940 // Can't be in VM when we call JNI. 1941 ThreadToNativeFromVM ttnfv(thread); 1942 const char* lf = env->GetStringUTFChars(libfile, NULL); 1943 CHECK_JNI_EXCEPTION_(env, 0); 1944 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 1945 env->ReleaseStringUTFChars(libfile, lf); 1946 #endif 1947 return ret; 1948 WB_END 1949 1950 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 1951 LINUX_ONLY(return OSContainer::is_containerized();) 1952 return false; 1953 WB_END 1954 1955 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 1956 os::print_os_info(tty); 1957 WB_END 1958 1959 // Elf decoder 1960 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 1961 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 1962 ElfFile::_do_not_cache_elf_section = true; 1963 #endif 1964 WB_END 1965 1966 1967 #define CC (char*) 1968 1969 static JNINativeMethod methods[] = { 1970 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 1971 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 1972 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 1973 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 1974 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 1975 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 1976 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 1977 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 1978 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 1979 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, 1980 {CC"parseCommandLine0", 1981 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 1982 (void*) &WB_ParseCommandLine 1983 }, 1984 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1985 (void*)&WB_AddToBootstrapClassLoaderSearch}, 1986 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1987 (void*)&WB_AddToSystemClassLoaderSearch}, 1988 {CC"getCompressedOopsMaxHeapSize", CC"()J", 1989 (void*)&WB_GetCompressedOopsMaxHeapSize}, 1990 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 1991 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 1992 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 1993 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 1994 #if INCLUDE_CDS 1995 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName}, 1996 #endif 1997 #if INCLUDE_G1GC 1998 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 1999 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 2000 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 2001 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 2002 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 2003 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 2004 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 2005 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 2006 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 2007 (void*)&WB_G1AuxiliaryMemoryUsage }, 2008 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 2009 #endif // INCLUDE_G1GC 2010 #if INCLUDE_PARALLELGC 2011 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 2012 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 2013 #endif 2014 #if INCLUDE_NMT 2015 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 2016 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 2017 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 2018 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 2019 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 2020 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 2021 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 2022 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 2023 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 2024 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 2025 #endif // INCLUDE_NMT 2026 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 2027 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 2028 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 2029 (void*)&WB_DeoptimizeMethod }, 2030 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 2031 (void*)&WB_IsMethodCompiled }, 2032 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 2033 (void*)&WB_IsMethodCompilable}, 2034 {CC"isMethodQueuedForCompilation0", 2035 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 2036 {CC"isIntrinsicAvailable0", 2037 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2038 (void*)&WB_IsIntrinsicAvailable}, 2039 {CC"makeMethodNotCompilable0", 2040 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2041 {CC"testSetDontInlineMethod0", 2042 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2043 {CC"getMethodCompilationLevel0", 2044 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2045 {CC"getMethodEntryBci0", 2046 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2047 {CC"getCompileQueueSize", 2048 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2049 {CC"testSetForceInlineMethod0", 2050 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2051 {CC"enqueueMethodForCompilation0", 2052 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2053 {CC"enqueueInitializerForCompilation0", 2054 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2055 {CC"clearMethodState0", 2056 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2057 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2058 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2059 {CC"matchesMethod", 2060 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2061 (void*)&WB_MatchesMethod}, 2062 {CC"matchesInline", 2063 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2064 (void*)&WB_MatchesInline}, 2065 {CC"shouldPrintAssembly", 2066 CC"(Ljava/lang/reflect/Executable;I)Z", 2067 (void*)&WB_ShouldPrintAssembly}, 2068 2069 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2070 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2071 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2072 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2073 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2074 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2075 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2076 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2077 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2078 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2079 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2080 (void*)&WB_SetStringVMFlag}, 2081 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2082 (void*)&WB_GetBooleanVMFlag}, 2083 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2084 (void*)&WB_GetIntVMFlag}, 2085 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2086 (void*)&WB_GetUintVMFlag}, 2087 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2088 (void*)&WB_GetIntxVMFlag}, 2089 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2090 (void*)&WB_GetUintxVMFlag}, 2091 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2092 (void*)&WB_GetUint64VMFlag}, 2093 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2094 (void*)&WB_GetSizeTVMFlag}, 2095 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2096 (void*)&WB_GetDoubleVMFlag}, 2097 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2098 (void*)&WB_GetStringVMFlag}, 2099 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2100 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2101 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2102 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2103 {CC"allocateMetaspace", 2104 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2105 {CC"freeMetaspace", 2106 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 2107 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2108 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2109 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect }, 2110 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment }, 2111 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2112 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2113 (void*)&WB_GetNMethod }, 2114 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 2115 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2116 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2117 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2118 {CC"getCompilationActivityMode", 2119 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2120 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2121 (void*)&WB_GetMethodData }, 2122 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2123 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2124 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2125 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2126 (void*)&WB_DefineModule }, 2127 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2128 (void*)&WB_AddModuleExports }, 2129 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2130 (void*)&WB_AddReadsModule }, 2131 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2132 (void*)&WB_AddModuleExportsToAllUnnamed }, 2133 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2134 (void*)&WB_AddModuleExportsToAll }, 2135 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls }, 2136 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2137 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2138 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2139 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 2140 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 2141 {CC"remapInstructionOperandFromCPCache0", 2142 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 2143 {CC"encodeConstantPoolIndyIndex0", 2144 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 2145 {CC"getMethodBooleanOption", 2146 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2147 (void*)&WB_GetMethodBooleaneOption}, 2148 {CC"getMethodIntxOption", 2149 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2150 (void*)&WB_GetMethodIntxOption}, 2151 {CC"getMethodUintxOption", 2152 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2153 (void*)&WB_GetMethodUintxOption}, 2154 {CC"getMethodDoubleOption", 2155 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2156 (void*)&WB_GetMethodDoubleOption}, 2157 {CC"getMethodStringOption", 2158 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2159 (void*)&WB_GetMethodStringOption}, 2160 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 2161 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2162 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored }, 2163 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 2164 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2165 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild }, 2166 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported }, 2167 2168 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2169 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2170 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2171 (void*)&WB_AddCompilerDirective }, 2172 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2173 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported}, 2174 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected}, 2175 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically}, 2176 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl}, 2177 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;", 2178 (void*)&WB_GetConcurrentGCPhases}, 2179 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z", 2180 (void*)&WB_RequestConcurrentGCPhase}, 2181 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2182 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2183 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2184 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2185 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 2186 }; 2187 2188 2189 #undef CC 2190 2191 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2192 { 2193 if (WhiteBoxAPI) { 2194 // Make sure that wbclass is loaded by the null classloader 2195 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass()); 2196 Handle loader(THREAD, ik->class_loader()); 2197 if (loader.is_null()) { 2198 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2199 WhiteBox::set_used(); 2200 } 2201 } 2202 } 2203 JVM_END