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/frame.inline.hpp" 57 #include "runtime/handshake.hpp" 58 #include "runtime/interfaceSupport.inline.hpp" 59 #include "runtime/javaCalls.hpp" 60 #include "runtime/jniHandles.inline.hpp" 61 #include "runtime/os.hpp" 62 #include "runtime/sweeper.hpp" 63 #include "runtime/thread.hpp" 64 #include "runtime/threadSMR.hpp" 65 #include "runtime/vm_version.hpp" 66 #include "services/memoryService.hpp" 67 #include "utilities/align.hpp" 68 #include "utilities/debug.hpp" 69 #include "utilities/elfFile.hpp" 70 #include "utilities/exceptions.hpp" 71 #include "utilities/macros.hpp" 72 #if INCLUDE_CDS 73 #include "prims/cdsoffsets.hpp" 74 #endif // INCLUDE_CDS 75 #if INCLUDE_ALL_GCS 76 #include "gc/g1/concurrentMarkThread.hpp" 77 #include "gc/g1/g1CollectedHeap.inline.hpp" 78 #include "gc/g1/g1ConcurrentMark.hpp" 79 #include "gc/g1/heapRegionRemSet.hpp" 80 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 81 #include "gc/parallel/adjoiningGenerations.hpp" 82 #endif // INCLUDE_ALL_GCS 83 #if INCLUDE_NMT 84 #include "services/mallocSiteTable.hpp" 85 #include "services/memTracker.hpp" 86 #include "utilities/nativeCallStack.hpp" 87 #endif // INCLUDE_NMT 88 89 #ifdef LINUX 90 #include "osContainer_linux.hpp" 91 #endif 92 93 #define SIZE_T_MAX_VALUE ((size_t) -1) 94 95 #define CHECK_JNI_EXCEPTION_(env, value) \ 96 do { \ 97 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 98 if (HAS_PENDING_EXCEPTION) { \ 99 return(value); \ 100 } \ 101 } while (0) 102 103 #define CHECK_JNI_EXCEPTION(env) \ 104 do { \ 105 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 106 if (HAS_PENDING_EXCEPTION) { \ 107 return; \ 108 } \ 109 } while (0) 110 111 bool WhiteBox::_used = false; 112 volatile bool WhiteBox::compilation_locked = false; 113 114 class VM_WhiteBoxOperation : public VM_Operation { 115 public: 116 VM_WhiteBoxOperation() { } 117 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 118 bool allow_nested_vm_operations() const { return true; } 119 }; 120 121 122 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 123 return (jlong)(void*)JNIHandles::resolve(obj); 124 WB_END 125 126 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 127 return heapOopSize; 128 WB_END 129 130 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 131 return os::vm_page_size(); 132 WB_END 133 134 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 135 return os::vm_allocation_granularity(); 136 WB_END 137 138 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 139 return os::large_page_size(); 140 WB_END 141 142 class WBIsKlassAliveClosure : public KlassClosure { 143 Symbol* _name; 144 bool _found; 145 public: 146 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} 147 148 void do_klass(Klass* k) { 149 if (_found) return; 150 Symbol* ksym = k->name(); 151 if (ksym->fast_compare(_name) == 0) { 152 _found = true; 153 } 154 } 155 156 bool found() const { 157 return _found; 158 } 159 }; 160 161 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) 162 oop h_name = JNIHandles::resolve(name); 163 if (h_name == NULL) return false; 164 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false); 165 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 166 167 WBIsKlassAliveClosure closure(sym); 168 ClassLoaderDataGraph::classes_do(&closure); 169 170 return closure.found(); 171 WB_END 172 173 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 174 #if INCLUDE_JVMTI 175 ResourceMark rm; 176 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 177 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 178 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 179 assert(err == JVMTI_ERROR_NONE, "must not fail"); 180 #endif 181 } 182 WB_END 183 184 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 185 #if INCLUDE_JVMTI 186 ResourceMark rm; 187 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 188 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 189 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 190 assert(err == JVMTI_ERROR_NONE, "must not fail"); 191 #endif 192 } 193 WB_END 194 195 196 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 197 return (jlong)Arguments::max_heap_for_compressed_oops(); 198 } 199 WB_END 200 201 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 202 CollectorPolicy * p = Universe::heap()->collector_policy(); 203 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " 204 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 205 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(), 206 p->space_alignment(), p->heap_alignment()); 207 } 208 WB_END 209 210 #ifndef PRODUCT 211 // Forward declaration 212 void TestReservedSpace_test(); 213 void TestReserveMemorySpecial_test(); 214 void TestVirtualSpace_test(); 215 void TestMetaspaceUtils_test(); 216 #endif 217 218 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) 219 #ifndef PRODUCT 220 TestReservedSpace_test(); 221 TestReserveMemorySpecial_test(); 222 TestVirtualSpace_test(); 223 TestMetaspaceUtils_test(); 224 #endif 225 WB_END 226 227 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 228 size_t granularity = os::vm_allocation_granularity(); 229 ReservedHeapSpace rhs(100 * granularity, granularity, false); 230 VirtualSpace vs; 231 vs.initialize(rhs, 50 * granularity); 232 233 // Check if constraints are complied 234 if (!( UseCompressedOops && rhs.base() != NULL && 235 Universe::narrow_oop_base() != NULL && 236 Universe::narrow_oop_use_implicit_null_checks() )) { 237 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 238 "\tUseCompressedOops is %d\n" 239 "\trhs.base() is " PTR_FORMAT "\n" 240 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n" 241 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d", 242 UseCompressedOops, 243 p2i(rhs.base()), 244 p2i(Universe::narrow_oop_base()), 245 Universe::narrow_oop_use_implicit_null_checks()); 246 return; 247 } 248 tty->print_cr("Reading from no access area... "); 249 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 250 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 251 WB_END 252 253 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 254 size_t magnitude, size_t iterations) { 255 size_t granularity = os::vm_allocation_granularity(); 256 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false); 257 VirtualSpace vs; 258 if (!vs.initialize(rhs, 0)) { 259 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 260 return 3; 261 } 262 263 int seed = os::random(); 264 tty->print_cr("Random seed is %d", seed); 265 os::init_random(seed); 266 267 for (size_t i = 0; i < iterations; i++) { 268 269 // Whether we will shrink or grow 270 bool shrink = os::random() % 2L == 0; 271 272 // Get random delta to resize virtual space 273 size_t delta = (size_t)os::random() % magnitude; 274 275 // If we are about to shrink virtual space below zero, then expand instead 276 if (shrink && vs.committed_size() < delta) { 277 shrink = false; 278 } 279 280 // Resizing by delta 281 if (shrink) { 282 vs.shrink_by(delta); 283 } else { 284 // If expanding fails expand_by will silently return false 285 vs.expand_by(delta, true); 286 } 287 } 288 return 0; 289 } 290 291 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 292 jlong reserved_space_size, jlong magnitude, jlong iterations)) 293 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 294 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 295 iterations); 296 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 297 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 298 return 1; 299 } 300 301 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 302 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 303 if (sizeof(size_t) < sizeof(jlong)) { 304 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; 305 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 306 || iterations > size_t_max_value) { 307 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 308 return 2; 309 } 310 } 311 312 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 313 (size_t) magnitude, (size_t) iterations); 314 WB_END 315 316 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name)) 317 return GCConfig::is_gc_supported((CollectedHeap::Name)name); 318 WB_END 319 320 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name)) 321 return GCConfig::is_gc_selected((CollectedHeap::Name)name); 322 WB_END 323 324 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o)) 325 return GCConfig::is_gc_selected_ergonomically(); 326 WB_END 327 328 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 329 oop p = JNIHandles::resolve(obj); 330 #if INCLUDE_ALL_GCS 331 if (UseG1GC) { 332 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 333 const HeapRegion* hr = g1->heap_region_containing(p); 334 if (hr == NULL) { 335 return false; 336 } 337 return !(hr->is_young()); 338 } else if (UseParallelGC) { 339 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 340 return !psh->is_in_young(p); 341 } 342 #endif // INCLUDE_ALL_GCS 343 GenCollectedHeap* gch = GenCollectedHeap::heap(); 344 return !gch->is_in_young(p); 345 WB_END 346 347 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 348 oop p = JNIHandles::resolve(obj); 349 return p->size() * HeapWordSize; 350 WB_END 351 352 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 353 size_t alignment = Universe::heap()->collector_policy()->space_alignment(); 354 return (jlong)alignment; 355 WB_END 356 357 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 358 size_t alignment = Universe::heap()->collector_policy()->heap_alignment(); 359 return (jlong)alignment; 360 WB_END 361 362 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o)) 363 return Universe::heap()->supports_concurrent_phase_control(); 364 WB_END 365 366 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o)) 367 const char* const* phases = Universe::heap()->concurrent_phases(); 368 jint nphases = 0; 369 for ( ; phases[nphases] != NULL; ++nphases) ; 370 371 ResourceMark rm(thread); 372 ThreadToNativeFromVM ttn(thread); 373 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 374 CHECK_JNI_EXCEPTION_(env, NULL); 375 376 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL); 377 CHECK_JNI_EXCEPTION_(env, NULL); 378 379 // If push fails, return with pending exception. 380 if (env->PushLocalFrame(nphases) < 0) return NULL; 381 for (jint i = 0; i < nphases; ++i) { 382 jstring phase = env->NewStringUTF(phases[i]); 383 CHECK_JNI_EXCEPTION_(env, NULL); 384 env->SetObjectArrayElement(result, i, phase); 385 CHECK_JNI_EXCEPTION_(env, NULL); 386 } 387 env->PopLocalFrame(NULL); 388 389 return result; 390 WB_END 391 392 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name)) 393 Handle h_name(THREAD, JNIHandles::resolve(name)); 394 ResourceMark rm; 395 const char* c_name = java_lang_String::as_utf8_string(h_name()); 396 return Universe::heap()->request_concurrent_phase(c_name); 397 WB_END 398 399 #if INCLUDE_ALL_GCS 400 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 401 if (UseG1GC) { 402 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 403 oop result = JNIHandles::resolve(obj); 404 const HeapRegion* hr = g1->heap_region_containing(result); 405 return hr->is_humongous(); 406 } 407 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 408 WB_END 409 410 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 411 if (UseG1GC) { 412 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 413 const HeapRegion* hr = g1->heap_region_containing((void*) addr); 414 return hr->is_humongous(); 415 } 416 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 417 WB_END 418 419 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 420 if (UseG1GC) { 421 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 422 const HeapRegion* hr = g1->heap_region_containing((void*) addr); 423 return hr->is_free(); 424 } 425 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 426 WB_END 427 428 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 429 if (UseG1GC) { 430 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 431 size_t nr = g1->max_regions(); 432 return (jlong)nr; 433 } 434 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 435 WB_END 436 437 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 438 if (UseG1GC) { 439 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 440 size_t nr = g1->num_free_regions(); 441 return (jlong)nr; 442 } 443 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 444 WB_END 445 446 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 447 if (UseG1GC) { 448 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 449 return g1h->concurrent_mark()->cm_thread()->during_cycle(); 450 } 451 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 452 WB_END 453 454 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o)) 455 if (UseG1GC) { 456 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 457 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) { 458 g1h->collect(GCCause::_wb_conc_mark); 459 return true; 460 } 461 return false; 462 } 463 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled"); 464 WB_END 465 466 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 467 if (UseG1GC) { 468 return (jint)HeapRegion::GrainBytes; 469 } 470 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 471 WB_END 472 473 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 474 #if INCLUDE_ALL_GCS 475 if (UseParallelGC) { 476 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment(); 477 } 478 #endif // INCLUDE_ALL_GCS 479 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 480 WB_END 481 482 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 483 #if INCLUDE_ALL_GCS 484 if (UseParallelGC) { 485 return ParallelScavengeHeap::heap()->generation_alignment(); 486 } 487 #endif // INCLUDE_ALL_GCS 488 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 489 WB_END 490 491 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 492 #if INCLUDE_ALL_GCS 493 if (UseG1GC) { 494 ResourceMark rm(THREAD); 495 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 496 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 497 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 498 return JNIHandles::make_local(env, h()); 499 } 500 #endif // INCLUDE_ALL_GCS 501 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 502 WB_END 503 504 class OldRegionsLivenessClosure: public HeapRegionClosure { 505 506 private: 507 const int _liveness; 508 size_t _total_count; 509 size_t _total_memory; 510 size_t _total_memory_to_free; 511 512 public: 513 OldRegionsLivenessClosure(int liveness) : 514 _liveness(liveness), 515 _total_count(0), 516 _total_memory(0), 517 _total_memory_to_free(0) { } 518 519 size_t total_count() { return _total_count; } 520 size_t total_memory() { return _total_memory; } 521 size_t total_memory_to_free() { return _total_memory_to_free; } 522 523 bool do_heap_region(HeapRegion* r) { 524 if (r->is_old()) { 525 size_t prev_live = r->marked_bytes(); 526 size_t live = r->live_bytes(); 527 size_t size = r->used(); 528 size_t reg_size = HeapRegion::GrainBytes; 529 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 530 _total_memory += size; 531 ++_total_count; 532 if (size == reg_size) { 533 // we don't include non-full regions since they are unlikely included in mixed gc 534 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 535 _total_memory_to_free += size - prev_live; 536 } 537 } 538 } 539 return false; 540 } 541 }; 542 543 544 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 545 if (!UseG1GC) { 546 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 547 } 548 if (liveness < 0) { 549 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 550 } 551 552 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 553 OldRegionsLivenessClosure rli(liveness); 554 g1h->heap_region_iterate(&rli); 555 556 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 557 result->long_at_put(0, rli.total_count()); 558 result->long_at_put(1, rli.total_memory()); 559 result->long_at_put(2, rli.total_memory_to_free()); 560 return (jlongArray) JNIHandles::make_local(env, result); 561 WB_END 562 563 #endif // INCLUDE_ALL_GCS 564 565 #if INCLUDE_NMT 566 // Alloc memory using the test memory type so that we can use that to see if 567 // NMT picks it up correctly 568 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 569 jlong addr = 0; 570 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 571 return addr; 572 WB_END 573 574 // Alloc memory with pseudo call stack. The test can create psudo malloc 575 // allocation site to stress the malloc tracking. 576 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 577 address pc = (address)(size_t)pseudo_stack; 578 NativeCallStack stack(&pc, 1); 579 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 580 WB_END 581 582 // Free the memory allocated by NMTAllocTest 583 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 584 os::free((void*)(uintptr_t)mem); 585 WB_END 586 587 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 588 jlong addr = 0; 589 590 addr = (jlong)(uintptr_t)os::reserve_memory(size); 591 MemTracker::record_virtual_memory_type((address)addr, mtTest); 592 593 return addr; 594 WB_END 595 596 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size)) 597 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr); 598 MemTracker::record_virtual_memory_type((address)addr, mtTest); 599 600 return addr; 601 WB_END 602 603 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 604 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 605 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 606 WB_END 607 608 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 609 os::uncommit_memory((char *)(uintptr_t)addr, size); 610 WB_END 611 612 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 613 os::release_memory((char *)(uintptr_t)addr, size); 614 WB_END 615 616 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env)) 617 // Test that we can downgrade NMT levels but not upgrade them. 618 if (MemTracker::tracking_level() == NMT_off) { 619 MemTracker::transition_to(NMT_off); 620 return MemTracker::tracking_level() == NMT_off; 621 } else { 622 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking"); 623 MemTracker::transition_to(NMT_summary); 624 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now"); 625 626 // Can't go to detail once NMT is set to summary. 627 MemTracker::transition_to(NMT_detail); 628 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now"); 629 630 // Shutdown sets tracking level to minimal. 631 MemTracker::shutdown(); 632 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); 633 634 // Once the tracking level is minimal, we cannot increase to summary. 635 // The code ignores this request instead of asserting because if the malloc site 636 // table overflows in another thread, it tries to change the code to summary. 637 MemTracker::transition_to(NMT_summary); 638 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 639 640 // Really can never go up to detail, verify that the code would never do this. 641 MemTracker::transition_to(NMT_detail); 642 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 643 return MemTracker::tracking_level() == NMT_minimal; 644 } 645 WB_END 646 647 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 648 int hash_size = MallocSiteTable::hash_buckets(); 649 assert(hash_size > 0, "NMT hash_size should be > 0"); 650 return (jint)hash_size; 651 WB_END 652 #endif // INCLUDE_NMT 653 654 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 655 assert(method != NULL, "method should not be null"); 656 ThreadToNativeFromVM ttn(thread); 657 return env->FromReflectedMethod(method); 658 } 659 660 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 661 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 662 private: 663 int _result; 664 const bool _make_not_entrant; 665 public: 666 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 667 _result(0), _make_not_entrant(make_not_entrant) { } 668 int result() const { return _result; } 669 670 void doit() { 671 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 672 if (t->has_last_Java_frame()) { 673 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) { 674 frame* f = fst.current(); 675 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 676 RegisterMap* reg_map = fst.register_map(); 677 Deoptimization::deoptimize(t, *f, reg_map); 678 if (_make_not_entrant) { 679 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 680 assert(cm != NULL, "sanity check"); 681 cm->make_not_entrant(); 682 } 683 ++_result; 684 } 685 } 686 } 687 } 688 } 689 }; 690 691 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 692 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 693 VMThread::execute(&op); 694 return op.result(); 695 WB_END 696 697 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 698 MutexLockerEx mu(Compile_lock); 699 CodeCache::mark_all_nmethods_for_deoptimization(); 700 VM_Deoptimize op; 701 VMThread::execute(&op); 702 WB_END 703 704 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 705 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 706 int result = 0; 707 CHECK_JNI_EXCEPTION_(env, result); 708 MutexLockerEx mu(Compile_lock); 709 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 710 if (is_osr) { 711 result += mh->mark_osr_nmethods(); 712 } else if (mh->code() != NULL) { 713 mh->code()->mark_for_deoptimization(); 714 ++result; 715 } 716 result += CodeCache::mark_for_deoptimization(mh()); 717 if (result > 0) { 718 VM_Deoptimize op; 719 VMThread::execute(&op); 720 } 721 return result; 722 WB_END 723 724 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 725 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 726 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 727 MutexLockerEx mu(Compile_lock); 728 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 729 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 730 if (code == NULL) { 731 return JNI_FALSE; 732 } 733 return (code->is_alive() && !code->is_marked_for_deoptimization()); 734 WB_END 735 736 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 737 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 738 return false; 739 } 740 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 741 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 742 MutexLockerEx mu(Compile_lock); 743 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 744 if (is_osr) { 745 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); 746 } else { 747 return CompilationPolicy::can_be_compiled(mh, comp_level); 748 } 749 WB_END 750 751 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 752 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 753 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 754 MutexLockerEx mu(Compile_lock); 755 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 756 return mh->queued_for_compilation(); 757 WB_END 758 759 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 760 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 761 return false; // Intrinsic is not available on a non-existent compilation level. 762 } 763 jmethodID method_id, compilation_context_id; 764 method_id = reflected_method_to_jmid(thread, env, method); 765 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 766 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 767 768 DirectiveSet* directive; 769 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 770 assert(comp != NULL, "compiler not available"); 771 if (compilation_context != NULL) { 772 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 773 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 774 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 775 directive = DirectivesStack::getMatchingDirective(cch, comp); 776 } else { 777 // Calling with NULL matches default directive 778 directive = DirectivesStack::getDefaultDirective(comp); 779 } 780 bool result = comp->is_intrinsic_available(mh, directive); 781 DirectivesStack::release(directive); 782 return result; 783 WB_END 784 785 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 786 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 787 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 788 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 789 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 790 return (code != NULL ? code->comp_level() : CompLevel_none); 791 WB_END 792 793 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 794 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 795 CHECK_JNI_EXCEPTION(env); 796 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 797 if (is_osr) { 798 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox"); 799 } else { 800 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); 801 } 802 WB_END 803 804 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 805 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 806 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 807 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 808 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 809 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 810 WB_END 811 812 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 813 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 814 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 815 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 816 bool result = mh->dont_inline(); 817 mh->set_dont_inline(value == JNI_TRUE); 818 return result; 819 WB_END 820 821 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 822 if (comp_level == CompLevel_any) { 823 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 824 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 825 } else { 826 return CompileBroker::queue_size(comp_level); 827 } 828 WB_END 829 830 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 831 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 832 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 833 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 834 bool result = mh->force_inline(); 835 mh->set_force_inline(value == JNI_TRUE); 836 return result; 837 WB_END 838 839 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) { 840 // Screen for unavailable/bad comp level or null method 841 AbstractCompiler* comp = CompileBroker::compiler(comp_level); 842 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) || comp == NULL) { 843 return false; 844 } 845 846 // Check if compilation is blocking 847 methodHandle mh(THREAD, method); 848 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 849 bool is_blocking = !directive->BackgroundCompilationOption; 850 DirectivesStack::release(directive); 851 852 // Compile method and check result 853 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD); 854 MutexLockerEx mu(Compile_lock); 855 return ((!is_blocking && mh->queued_for_compilation()) || nm != NULL); 856 } 857 858 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 859 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 860 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 861 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 862 WB_END 863 864 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 865 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 866 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD); 867 WB_END 868 869 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 870 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 871 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 872 873 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 874 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 875 bool result = directive->PrintAssemblyOption; 876 DirectivesStack::release(directive); 877 878 return result; 879 WB_END 880 881 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 882 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 883 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 884 885 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 886 887 ResourceMark rm; 888 const char* error_msg = NULL; 889 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 890 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 891 892 if (m == NULL) { 893 assert(error_msg != NULL, "Always have an error message"); 894 tty->print_cr("Got error: %s", error_msg); 895 return -1; // Pattern failed 896 } 897 898 // Pattern works - now check if it matches 899 int result; 900 if (m->match(mh, InlineMatcher::force_inline)) { 901 result = 2; // Force inline match 902 } else if (m->match(mh, InlineMatcher::dont_inline)) { 903 result = 1; // Dont inline match 904 } else { 905 result = 0; // No match 906 } 907 delete m; 908 return result; 909 WB_END 910 911 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 912 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 913 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 914 915 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 916 917 ResourceMark rm; 918 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 919 920 const char* error_msg = NULL; 921 922 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg); 923 if (m == NULL) { 924 assert(error_msg != NULL, "Must have error_msg"); 925 tty->print_cr("Got error: %s", error_msg); 926 return -1; 927 } 928 929 // Pattern works - now check if it matches 930 int result = m->matches(mh); 931 delete m; 932 assert(result == 0 || result == 1, "Result out of range"); 933 return result; 934 WB_END 935 936 static AlwaysFalseClosure always_false; 937 938 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 939 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 940 CHECK_JNI_EXCEPTION(env); 941 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 942 MutexLockerEx mu(Compile_lock); 943 MethodData* mdo = mh->method_data(); 944 MethodCounters* mcs = mh->method_counters(); 945 946 if (mdo != NULL) { 947 mdo->init(); 948 ResourceMark rm; 949 int arg_count = mdo->method()->size_of_parameters(); 950 for (int i = 0; i < arg_count; i++) { 951 mdo->set_arg_modified(i, 0); 952 } 953 MutexLockerEx mu(mdo->extra_data_lock()); 954 mdo->clean_method_data(&always_false); 955 } 956 957 mh->clear_not_c1_compilable(); 958 mh->clear_not_c2_compilable(); 959 mh->clear_not_c2_osr_compilable(); 960 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 961 if (mcs != NULL) { 962 mcs->backedge_counter()->init(); 963 mcs->invocation_counter()->init(); 964 mcs->set_interpreter_invocation_count(0); 965 mcs->set_interpreter_throwout_count(0); 966 967 #ifdef TIERED 968 mcs->set_rate(0.0F); 969 mh->set_prev_event_count(0); 970 mh->set_prev_time(0); 971 #endif 972 } 973 WB_END 974 975 template <typename T> 976 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) { 977 if (name == NULL) { 978 return false; 979 } 980 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 981 const char* flag_name = env->GetStringUTFChars(name, NULL); 982 CHECK_JNI_EXCEPTION_(env, false); 983 Flag::Error result = (*TAt)(flag_name, value, true, true); 984 env->ReleaseStringUTFChars(name, flag_name); 985 return (result == Flag::SUCCESS); 986 } 987 988 template <typename T> 989 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) { 990 if (name == NULL) { 991 return false; 992 } 993 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 994 const char* flag_name = env->GetStringUTFChars(name, NULL); 995 CHECK_JNI_EXCEPTION_(env, false); 996 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL); 997 env->ReleaseStringUTFChars(name, flag_name); 998 return (result == Flag::SUCCESS); 999 } 1000 1001 template <typename T> 1002 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1003 ResourceMark rm(thread); 1004 jclass clazz = env->FindClass(name->as_C_string()); 1005 CHECK_JNI_EXCEPTION_(env, NULL); 1006 jmethodID methodID = env->GetStaticMethodID(clazz, 1007 vmSymbols::valueOf_name()->as_C_string(), 1008 sig->as_C_string()); 1009 CHECK_JNI_EXCEPTION_(env, NULL); 1010 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1011 CHECK_JNI_EXCEPTION_(env, NULL); 1012 return result; 1013 } 1014 1015 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1016 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1017 } 1018 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1019 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1020 } 1021 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1022 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1023 } 1024 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1025 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1026 }*/ 1027 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1028 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1029 } 1030 1031 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1032 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1033 const char* flag_name = env->GetStringUTFChars(name, NULL); 1034 CHECK_JNI_EXCEPTION_(env, NULL); 1035 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true); 1036 env->ReleaseStringUTFChars(name, flag_name); 1037 return result; 1038 } 1039 1040 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1041 Flag* flag = getVMFlag(thread, env, name); 1042 return (flag != NULL) && flag->is_constant_in_binary(); 1043 WB_END 1044 1045 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1046 Flag* flag = getVMFlag(thread, env, name); 1047 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 1048 WB_END 1049 1050 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1051 bool result; 1052 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) { 1053 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1054 return booleanBox(thread, env, result); 1055 } 1056 return NULL; 1057 WB_END 1058 1059 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1060 int result; 1061 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) { 1062 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1063 return longBox(thread, env, result); 1064 } 1065 return NULL; 1066 WB_END 1067 1068 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1069 uint result; 1070 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) { 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_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1078 intx result; 1079 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) { 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_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1087 uintx result; 1088 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) { 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_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1096 uint64_t result; 1097 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) { 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_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1105 uintx result; 1106 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_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_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1114 double result; 1115 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) { 1116 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1117 return doubleBox(thread, env, result); 1118 } 1119 return NULL; 1120 WB_END 1121 1122 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1123 ccstr ccstrResult; 1124 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) { 1125 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1126 jstring result = env->NewStringUTF(ccstrResult); 1127 CHECK_JNI_EXCEPTION_(env, NULL); 1128 return result; 1129 } 1130 return NULL; 1131 WB_END 1132 1133 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1134 bool result = value == JNI_TRUE ? true : false; 1135 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut); 1136 WB_END 1137 1138 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1139 int result = value; 1140 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut); 1141 WB_END 1142 1143 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1144 uint result = value; 1145 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut); 1146 WB_END 1147 1148 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1149 intx result = value; 1150 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut); 1151 WB_END 1152 1153 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1154 uintx result = value; 1155 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut); 1156 WB_END 1157 1158 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1159 uint64_t result = value; 1160 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut); 1161 WB_END 1162 1163 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1164 size_t result = value; 1165 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut); 1166 WB_END 1167 1168 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1169 double result = value; 1170 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut); 1171 WB_END 1172 1173 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1174 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1175 const char* ccstrValue; 1176 if (value == NULL) { 1177 ccstrValue = NULL; 1178 } 1179 else { 1180 ccstrValue = env->GetStringUTFChars(value, NULL); 1181 CHECK_JNI_EXCEPTION(env); 1182 } 1183 ccstr ccstrResult = ccstrValue; 1184 bool needFree; 1185 { 1186 ThreadInVMfromNative ttvfn(thread); // back to VM 1187 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut); 1188 } 1189 if (value != NULL) { 1190 env->ReleaseStringUTFChars(value, ccstrValue); 1191 } 1192 if (needFree) { 1193 FREE_C_HEAP_ARRAY(char, ccstrResult); 1194 } 1195 WB_END 1196 1197 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1198 WhiteBox::compilation_locked = true; 1199 WB_END 1200 1201 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1202 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1203 WhiteBox::compilation_locked = false; 1204 mo.notify_all(); 1205 WB_END 1206 1207 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 1208 // Force a code cache sweep and block until it finished 1209 NMethodSweeper::force_sweep(); 1210 WB_END 1211 1212 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1213 ResourceMark rm(THREAD); 1214 int len; 1215 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1216 return (StringTable::lookup(name, len) != NULL); 1217 WB_END 1218 1219 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1220 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1221 Universe::heap()->collect(GCCause::_wb_full_gc); 1222 #if INCLUDE_ALL_GCS 1223 if (UseG1GC) { 1224 // Needs to be cleared explicitly for G1 1225 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1226 } 1227 #endif // INCLUDE_ALL_GCS 1228 WB_END 1229 1230 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1231 Universe::heap()->collect(GCCause::_wb_young_gc); 1232 WB_END 1233 1234 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1235 // static+volatile in order to force the read to happen 1236 // (not be eliminated by the compiler) 1237 static char c; 1238 static volatile char* p; 1239 1240 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 1241 if (p == NULL) { 1242 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1243 } 1244 1245 c = *p; 1246 WB_END 1247 1248 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1249 const char* features = VM_Version::features_string(); 1250 ThreadToNativeFromVM ttn(thread); 1251 jstring features_string = env->NewStringUTF(features); 1252 1253 CHECK_JNI_EXCEPTION_(env, NULL); 1254 1255 return features_string; 1256 WB_END 1257 1258 int WhiteBox::get_blob_type(const CodeBlob* code) { 1259 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1260 if (code->is_aot()) { 1261 return -1; 1262 } 1263 return CodeCache::get_code_heap(code)->code_blob_type(); 1264 } 1265 1266 CodeHeap* WhiteBox::get_code_heap(int blob_type) { 1267 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1268 return CodeCache::get_code_heap(blob_type); 1269 } 1270 1271 struct CodeBlobStub { 1272 CodeBlobStub(const CodeBlob* blob) : 1273 name(os::strdup(blob->name())), 1274 size(blob->size()), 1275 blob_type(WhiteBox::get_blob_type(blob)), 1276 address((jlong) blob) { } 1277 ~CodeBlobStub() { os::free((void*) name); } 1278 const char* const name; 1279 const jint size; 1280 const jint blob_type; 1281 const jlong address; 1282 }; 1283 1284 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1285 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1286 CHECK_JNI_EXCEPTION_(env, NULL); 1287 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1288 1289 jstring name = env->NewStringUTF(cb->name); 1290 CHECK_JNI_EXCEPTION_(env, NULL); 1291 env->SetObjectArrayElement(result, 0, name); 1292 1293 jobject obj = integerBox(thread, env, cb->size); 1294 CHECK_JNI_EXCEPTION_(env, NULL); 1295 env->SetObjectArrayElement(result, 1, obj); 1296 1297 obj = integerBox(thread, env, cb->blob_type); 1298 CHECK_JNI_EXCEPTION_(env, NULL); 1299 env->SetObjectArrayElement(result, 2, obj); 1300 1301 obj = longBox(thread, env, cb->address); 1302 CHECK_JNI_EXCEPTION_(env, NULL); 1303 env->SetObjectArrayElement(result, 3, obj); 1304 1305 return result; 1306 } 1307 1308 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1309 ResourceMark rm(THREAD); 1310 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1311 CHECK_JNI_EXCEPTION_(env, NULL); 1312 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1313 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1314 jobjectArray result = NULL; 1315 if (code == NULL) { 1316 return result; 1317 } 1318 int comp_level = code->comp_level(); 1319 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size(); 1320 1321 ThreadToNativeFromVM ttn(thread); 1322 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1323 CHECK_JNI_EXCEPTION_(env, NULL); 1324 result = env->NewObjectArray(5, clazz, NULL); 1325 if (result == NULL) { 1326 return result; 1327 } 1328 1329 CodeBlobStub stub(code); 1330 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1331 CHECK_JNI_EXCEPTION_(env, NULL); 1332 env->SetObjectArrayElement(result, 0, codeBlob); 1333 1334 jobject level = integerBox(thread, env, comp_level); 1335 CHECK_JNI_EXCEPTION_(env, NULL); 1336 env->SetObjectArrayElement(result, 1, level); 1337 1338 jbyteArray insts = env->NewByteArray(insts_size); 1339 CHECK_JNI_EXCEPTION_(env, NULL); 1340 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1341 env->SetObjectArrayElement(result, 2, insts); 1342 1343 jobject id = integerBox(thread, env, code->compile_id()); 1344 CHECK_JNI_EXCEPTION_(env, NULL); 1345 env->SetObjectArrayElement(result, 3, id); 1346 1347 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1348 CHECK_JNI_EXCEPTION_(env, NULL); 1349 env->SetObjectArrayElement(result, 4, entry_point); 1350 1351 return result; 1352 WB_END 1353 1354 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1355 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1356 BufferBlob* blob; 1357 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1358 if (full_size < size) { 1359 full_size += align_up(size - full_size, oopSize); 1360 } 1361 { 1362 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1363 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1364 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1365 } 1366 // Track memory usage statistic after releasing CodeCache_lock 1367 MemoryService::track_code_cache_memory_usage(); 1368 return blob; 1369 } 1370 1371 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1372 if (size < 0) { 1373 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1374 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1375 } 1376 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1377 WB_END 1378 1379 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1380 if (addr == 0) { 1381 return; 1382 } 1383 BufferBlob::free((BufferBlob*) addr); 1384 WB_END 1385 1386 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1387 ResourceMark rm; 1388 GrowableArray<CodeBlobStub*> blobs; 1389 { 1390 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1391 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1392 if (heap == NULL) { 1393 return NULL; 1394 } 1395 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1396 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1397 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1398 new (stub) CodeBlobStub(cb); 1399 blobs.append(stub); 1400 } 1401 } 1402 if (blobs.length() == 0) { 1403 return NULL; 1404 } 1405 ThreadToNativeFromVM ttn(thread); 1406 jobjectArray result = NULL; 1407 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1408 CHECK_JNI_EXCEPTION_(env, NULL); 1409 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1410 CHECK_JNI_EXCEPTION_(env, NULL); 1411 if (result == NULL) { 1412 return result; 1413 } 1414 int i = 0; 1415 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1416 it != blobs.end(); ++it) { 1417 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1418 CHECK_JNI_EXCEPTION_(env, NULL); 1419 env->SetObjectArrayElement(result, i, obj); 1420 CHECK_JNI_EXCEPTION_(env, NULL); 1421 ++i; 1422 } 1423 return result; 1424 WB_END 1425 1426 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1427 return CompileBroker::get_compilation_activity_mode(); 1428 WB_END 1429 1430 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1431 if (addr == 0) { 1432 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1433 "WB_GetCodeBlob: addr is null"); 1434 } 1435 ThreadToNativeFromVM ttn(thread); 1436 CodeBlobStub stub((CodeBlob*) addr); 1437 return codeBlob2objectArray(thread, env, &stub); 1438 WB_END 1439 1440 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1441 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1442 CHECK_JNI_EXCEPTION_(env, 0); 1443 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1444 return (jlong) mh->method_data(); 1445 WB_END 1446 1447 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1448 return (jlong) Thread::current()->stack_size(); 1449 WB_END 1450 1451 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1452 JavaThread* t = JavaThread::current(); 1453 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size(); 1454 WB_END 1455 1456 1457 int WhiteBox::array_bytes_to_length(size_t bytes) { 1458 return Array<u1>::bytes_to_length(bytes); 1459 } 1460 1461 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1462 if (size < 0) { 1463 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1464 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1465 } 1466 1467 oop class_loader_oop = JNIHandles::resolve(class_loader); 1468 ClassLoaderData* cld = class_loader_oop != NULL 1469 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1470 : ClassLoaderData::the_null_class_loader_data(); 1471 1472 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1473 1474 return (jlong)(uintptr_t)metadata; 1475 WB_END 1476 1477 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 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 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 1484 WB_END 1485 1486 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1487 jstring version, jstring location, jobjectArray packages)) 1488 ResourceMark rm(THREAD); 1489 1490 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages)); 1491 objArrayHandle packages_h(THREAD, packages_oop); 1492 int num_packages = (packages_h == NULL ? 0 : packages_h->length()); 1493 1494 char** pkgs = NULL; 1495 if (num_packages > 0) { 1496 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages); 1497 for (int x = 0; x < num_packages; x++) { 1498 oop pkg_str = packages_h->obj_at(x); 1499 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) { 1500 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 1501 err_msg("Bad package name")); 1502 } 1503 pkgs[x] = java_lang_String::as_utf8_string(pkg_str); 1504 } 1505 } 1506 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK); 1507 WB_END 1508 1509 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1510 ResourceMark rm(THREAD); 1511 char* package_name = NULL; 1512 if (package != NULL) { 1513 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1514 } 1515 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK); 1516 WB_END 1517 1518 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1519 ResourceMark rm(THREAD); 1520 char* package_name = NULL; 1521 if (package != NULL) { 1522 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1523 } 1524 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK); 1525 WB_END 1526 1527 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1528 ResourceMark rm(THREAD); 1529 char* package_name = NULL; 1530 if (package != NULL) { 1531 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1532 } 1533 Modules::add_module_exports(module, package_name, NULL, CHECK); 1534 WB_END 1535 1536 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1537 Modules::add_reads_module(from_module, source_module, CHECK); 1538 WB_END 1539 1540 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1541 if (inc < 0) { 1542 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1543 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1544 } 1545 1546 jlong max_size_t = (jlong) ((size_t) -1); 1547 if (inc > max_size_t) { 1548 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1549 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1550 } 1551 1552 size_t new_cap_until_GC = 0; 1553 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1554 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1555 if (!success) { 1556 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1557 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1558 "due to contention with another thread"); 1559 } 1560 return (jlong) new_cap_until_GC; 1561 WB_END 1562 1563 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1564 return (jlong) MetaspaceGC::capacity_until_GC(); 1565 WB_END 1566 1567 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb)) 1568 return MetaspaceGC::should_concurrent_collect(); 1569 WB_END 1570 1571 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb)) 1572 return (jlong)Metaspace::reserve_alignment(); 1573 WB_END 1574 1575 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue)) 1576 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ? 1577 Monitor::_safepoint_check_always : 1578 Monitor::_safepoint_check_never; 1579 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required), 1580 attemptedNoSafepointValue == JNI_TRUE); 1581 WB_END 1582 1583 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1584 oop obj_oop = JNIHandles::resolve(obj); 1585 return (jboolean) obj_oop->mark()->has_monitor(); 1586 WB_END 1587 1588 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1589 VM_ForceSafepoint force_safepoint_op; 1590 VMThread::execute(&force_safepoint_op); 1591 WB_END 1592 1593 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1594 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1595 return (jlong) ik->constants(); 1596 WB_END 1597 1598 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1599 return ConstantPool::CPCACHE_INDEX_TAG; 1600 WB_END 1601 1602 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1603 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1604 ConstantPool* cp = ik->constants(); 1605 if (cp->cache() == NULL) { 1606 return -1; 1607 } 1608 return cp->cache()->length(); 1609 WB_END 1610 1611 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1612 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1613 ConstantPool* cp = ik->constants(); 1614 if (cp->cache() == NULL) { 1615 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1616 } 1617 jint cpci = index; 1618 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1619 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1620 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1621 } 1622 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1623 return cpi; 1624 WB_END 1625 1626 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1627 return ConstantPool::encode_invokedynamic_index(index); 1628 WB_END 1629 1630 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1631 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1632 VMThread::execute(&clear_ics); 1633 WB_END 1634 1635 template <typename T> 1636 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1637 assert(value != NULL, "sanity"); 1638 if (method == NULL || name == NULL) { 1639 return false; 1640 } 1641 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1642 CHECK_JNI_EXCEPTION_(env, false); 1643 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1644 // can't be in VM when we call JNI 1645 ThreadToNativeFromVM ttnfv(thread); 1646 const char* flag_name = env->GetStringUTFChars(name, NULL); 1647 CHECK_JNI_EXCEPTION_(env, false); 1648 bool result = CompilerOracle::has_option_value(mh, flag_name, *value); 1649 env->ReleaseStringUTFChars(name, flag_name); 1650 return result; 1651 } 1652 1653 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1654 bool result; 1655 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1656 // can't be in VM when we call JNI 1657 ThreadToNativeFromVM ttnfv(thread); 1658 return booleanBox(thread, env, result); 1659 } 1660 return NULL; 1661 WB_END 1662 1663 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1664 intx result; 1665 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1666 // can't be in VM when we call JNI 1667 ThreadToNativeFromVM ttnfv(thread); 1668 return longBox(thread, env, result); 1669 } 1670 return NULL; 1671 WB_END 1672 1673 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1674 uintx result; 1675 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1676 // can't be in VM when we call JNI 1677 ThreadToNativeFromVM ttnfv(thread); 1678 return longBox(thread, env, result); 1679 } 1680 return NULL; 1681 WB_END 1682 1683 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1684 double result; 1685 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1686 // can't be in VM when we call JNI 1687 ThreadToNativeFromVM ttnfv(thread); 1688 return doubleBox(thread, env, result); 1689 } 1690 return NULL; 1691 WB_END 1692 1693 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1694 ccstr ccstrResult; 1695 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 1696 // can't be in VM when we call JNI 1697 ThreadToNativeFromVM ttnfv(thread); 1698 jstring result = env->NewStringUTF(ccstrResult); 1699 CHECK_JNI_EXCEPTION_(env, NULL); 1700 return result; 1701 } 1702 return NULL; 1703 WB_END 1704 1705 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 1706 oop obj_oop = JNIHandles::resolve(obj); 1707 return oopDesc::is_archive_object(obj_oop); 1708 WB_END 1709 1710 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 1711 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1712 WB_END 1713 1714 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env)) 1715 return !StringTable::shared_string_mapped(); 1716 WB_END 1717 1718 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz)) 1719 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 1720 if (k->is_instance_klass()) { 1721 InstanceKlass *ik = InstanceKlass::cast(k); 1722 ConstantPool *cp = ik->constants(); 1723 objArrayOop refs = cp->resolved_references(); 1724 return (jobject)JNIHandles::make_local(env, refs); 1725 } else { 1726 return NULL; 1727 } 1728 WB_END 1729 1730 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 1731 return MetaspaceShared::open_archive_heap_region_mapped(); 1732 WB_END 1733 1734 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env)) 1735 #if INCLUDE_CDS 1736 # ifdef _LP64 1737 if (!UseCompressedOops || !UseCompressedClassPointers) { 1738 // On 64-bit VMs, CDS is supported only with compressed oops/pointers 1739 return false; 1740 } 1741 # endif // _LP64 1742 return true; 1743 #else 1744 return false; 1745 #endif // INCLUDE_CDS 1746 WB_END 1747 1748 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env)) 1749 return MetaspaceShared::is_heap_object_archiving_allowed(); 1750 WB_END 1751 1752 1753 #if INCLUDE_CDS 1754 1755 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name)) 1756 ResourceMark rm; 1757 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 1758 int result = CDSOffsets::find_offset(c_name); 1759 return (jint)result; 1760 WB_END 1761 1762 #endif // INCLUDE_CDS 1763 1764 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 1765 class TraceSelfClosure : public ThreadClosure { 1766 jint _num_threads_completed; 1767 1768 void do_thread(Thread* th) { 1769 assert(th->is_Java_thread(), "sanity"); 1770 JavaThread* jt = (JavaThread*)th; 1771 ResourceMark rm; 1772 1773 jt->print_on(tty); 1774 jt->print_stack_on(tty); 1775 tty->cr(); 1776 Atomic::inc(&_num_threads_completed); 1777 } 1778 1779 public: 1780 TraceSelfClosure() : _num_threads_completed(0) {} 1781 1782 jint num_threads_completed() const { return _num_threads_completed; } 1783 }; 1784 TraceSelfClosure tsc; 1785 1786 if (all_threads) { 1787 Handshake::execute(&tsc); 1788 } else { 1789 oop thread_oop = JNIHandles::resolve(thread_handle); 1790 if (thread_oop != NULL) { 1791 JavaThread* target = java_lang_Thread::thread(thread_oop); 1792 Handshake::execute(&tsc, target); 1793 } 1794 } 1795 return tsc.num_threads_completed(); 1796 WB_END 1797 1798 //Some convenience methods to deal with objects from java 1799 int WhiteBox::offset_for_field(const char* field_name, oop object, 1800 Symbol* signature_symbol) { 1801 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 1802 Thread* THREAD = Thread::current(); 1803 1804 //Get the class of our object 1805 Klass* arg_klass = object->klass(); 1806 //Turn it into an instance-klass 1807 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 1808 1809 //Create symbols to look for in the class 1810 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), 1811 THREAD); 1812 1813 //To be filled in with an offset of the field we're looking for 1814 fieldDescriptor fd; 1815 1816 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 1817 if (res == NULL) { 1818 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 1819 name_symbol->as_C_string()); 1820 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 1821 } 1822 1823 //fetch the field at the offset we've found 1824 int dest_offset = fd.offset(); 1825 1826 return dest_offset; 1827 } 1828 1829 1830 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 1831 int offset = offset_for_field(field_name, object, 1832 vmSymbols::string_signature()); 1833 oop string = object->obj_field(offset); 1834 if (string == NULL) { 1835 return NULL; 1836 } 1837 const char* ret = java_lang_String::as_utf8_string(string); 1838 return ret; 1839 } 1840 1841 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 1842 int offset = 1843 offset_for_field(field_name, object, vmSymbols::bool_signature()); 1844 bool ret = (object->bool_field(offset) == JNI_TRUE); 1845 return ret; 1846 } 1847 1848 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 1849 ResourceMark rm; 1850 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1851 1852 // one by one registration natives for exception catching 1853 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 1854 CHECK_JNI_EXCEPTION(env); 1855 for (int i = 0, n = method_count; i < n; ++i) { 1856 // Skip dummy entries 1857 if (method_array[i].fnPtr == NULL) continue; 1858 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 1859 jthrowable throwable_obj = env->ExceptionOccurred(); 1860 if (throwable_obj != NULL) { 1861 env->ExceptionClear(); 1862 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 1863 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 1864 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 1865 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 1866 method_array[i].name, method_array[i].signature); 1867 } 1868 } else { 1869 // Registration failed unexpectedly. 1870 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 1871 method_array[i].name, method_array[i].signature); 1872 env->UnregisterNatives(wbclass); 1873 break; 1874 } 1875 } 1876 } 1877 } 1878 1879 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 1880 // can't be in VM when we call JNI 1881 ThreadToNativeFromVM ttnfv(thread); 1882 const char* dir = env->GetStringUTFChars(compDirect, NULL); 1883 CHECK_JNI_EXCEPTION_(env, 0); 1884 int ret; 1885 { 1886 ThreadInVMfromNative ttvfn(thread); // back to VM 1887 ret = DirectivesParser::parse_string(dir, tty); 1888 } 1889 env->ReleaseStringUTFChars(compDirect, dir); 1890 // -1 for error parsing directive. Return 0 as number of directives added. 1891 if (ret == -1) { 1892 ret = 0; 1893 } 1894 return (jint) ret; 1895 WB_END 1896 1897 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 1898 DirectivesStack::pop(count); 1899 WB_END 1900 1901 // Checks that the library libfile has the noexecstack bit set. 1902 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 1903 jboolean ret = false; 1904 #ifdef LINUX 1905 // Can't be in VM when we call JNI. 1906 ThreadToNativeFromVM ttnfv(thread); 1907 const char* lf = env->GetStringUTFChars(libfile, NULL); 1908 CHECK_JNI_EXCEPTION_(env, 0); 1909 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 1910 env->ReleaseStringUTFChars(libfile, lf); 1911 #endif 1912 return ret; 1913 WB_END 1914 1915 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 1916 LINUX_ONLY(return OSContainer::is_containerized();) 1917 return false; 1918 WB_END 1919 1920 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 1921 os::print_os_info(tty); 1922 WB_END 1923 1924 // Elf decoder 1925 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 1926 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 1927 ElfFile::_do_not_cache_elf_section = true; 1928 #endif 1929 WB_END 1930 1931 1932 #define CC (char*) 1933 1934 static JNINativeMethod methods[] = { 1935 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 1936 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 1937 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 1938 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 1939 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 1940 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 1941 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 1942 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 1943 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 1944 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, 1945 {CC"parseCommandLine0", 1946 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 1947 (void*) &WB_ParseCommandLine 1948 }, 1949 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1950 (void*)&WB_AddToBootstrapClassLoaderSearch}, 1951 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1952 (void*)&WB_AddToSystemClassLoaderSearch}, 1953 {CC"getCompressedOopsMaxHeapSize", CC"()J", 1954 (void*)&WB_GetCompressedOopsMaxHeapSize}, 1955 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 1956 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 1957 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 1958 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 1959 #if INCLUDE_CDS 1960 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName}, 1961 #endif 1962 #if INCLUDE_ALL_GCS 1963 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 1964 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 1965 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 1966 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 1967 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 1968 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 1969 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 1970 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 1971 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 1972 (void*)&WB_G1AuxiliaryMemoryUsage }, 1973 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 1974 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 1975 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 1976 #endif // INCLUDE_ALL_GCS 1977 #if INCLUDE_NMT 1978 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 1979 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 1980 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 1981 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 1982 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 1983 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 1984 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 1985 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 1986 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 1987 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 1988 #endif // INCLUDE_NMT 1989 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 1990 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 1991 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 1992 (void*)&WB_DeoptimizeMethod }, 1993 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 1994 (void*)&WB_IsMethodCompiled }, 1995 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 1996 (void*)&WB_IsMethodCompilable}, 1997 {CC"isMethodQueuedForCompilation0", 1998 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 1999 {CC"isIntrinsicAvailable0", 2000 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2001 (void*)&WB_IsIntrinsicAvailable}, 2002 {CC"makeMethodNotCompilable0", 2003 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2004 {CC"testSetDontInlineMethod0", 2005 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2006 {CC"getMethodCompilationLevel0", 2007 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2008 {CC"getMethodEntryBci0", 2009 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2010 {CC"getCompileQueueSize", 2011 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2012 {CC"testSetForceInlineMethod0", 2013 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2014 {CC"enqueueMethodForCompilation0", 2015 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2016 {CC"enqueueInitializerForCompilation0", 2017 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2018 {CC"clearMethodState0", 2019 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2020 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2021 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2022 {CC"matchesMethod", 2023 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2024 (void*)&WB_MatchesMethod}, 2025 {CC"matchesInline", 2026 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2027 (void*)&WB_MatchesInline}, 2028 {CC"shouldPrintAssembly", 2029 CC"(Ljava/lang/reflect/Executable;I)Z", 2030 (void*)&WB_ShouldPrintAssembly}, 2031 2032 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2033 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2034 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2035 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2036 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2037 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2038 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2039 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2040 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2041 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2042 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2043 (void*)&WB_SetStringVMFlag}, 2044 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2045 (void*)&WB_GetBooleanVMFlag}, 2046 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2047 (void*)&WB_GetIntVMFlag}, 2048 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2049 (void*)&WB_GetUintVMFlag}, 2050 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2051 (void*)&WB_GetIntxVMFlag}, 2052 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2053 (void*)&WB_GetUintxVMFlag}, 2054 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2055 (void*)&WB_GetUint64VMFlag}, 2056 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2057 (void*)&WB_GetSizeTVMFlag}, 2058 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2059 (void*)&WB_GetDoubleVMFlag}, 2060 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2061 (void*)&WB_GetStringVMFlag}, 2062 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2063 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2064 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2065 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2066 {CC"allocateMetaspace", 2067 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2068 {CC"freeMetaspace", 2069 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 2070 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2071 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2072 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect }, 2073 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment }, 2074 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2075 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2076 (void*)&WB_GetNMethod }, 2077 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 2078 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2079 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2080 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2081 {CC"getCompilationActivityMode", 2082 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2083 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2084 (void*)&WB_GetMethodData }, 2085 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2086 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2087 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2088 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2089 (void*)&WB_DefineModule }, 2090 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2091 (void*)&WB_AddModuleExports }, 2092 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2093 (void*)&WB_AddReadsModule }, 2094 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2095 (void*)&WB_AddModuleExportsToAllUnnamed }, 2096 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2097 (void*)&WB_AddModuleExportsToAll }, 2098 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls }, 2099 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2100 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2101 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2102 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 2103 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 2104 {CC"remapInstructionOperandFromCPCache0", 2105 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 2106 {CC"encodeConstantPoolIndyIndex0", 2107 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 2108 {CC"getMethodBooleanOption", 2109 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2110 (void*)&WB_GetMethodBooleaneOption}, 2111 {CC"getMethodIntxOption", 2112 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2113 (void*)&WB_GetMethodIntxOption}, 2114 {CC"getMethodUintxOption", 2115 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2116 (void*)&WB_GetMethodUintxOption}, 2117 {CC"getMethodDoubleOption", 2118 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2119 (void*)&WB_GetMethodDoubleOption}, 2120 {CC"getMethodStringOption", 2121 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2122 (void*)&WB_GetMethodStringOption}, 2123 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 2124 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2125 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored }, 2126 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 2127 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2128 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild }, 2129 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported }, 2130 2131 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2132 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2133 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2134 (void*)&WB_AddCompilerDirective }, 2135 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2136 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported}, 2137 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected}, 2138 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically}, 2139 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl}, 2140 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;", 2141 (void*)&WB_GetConcurrentGCPhases}, 2142 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z", 2143 (void*)&WB_RequestConcurrentGCPhase}, 2144 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2145 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2146 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2147 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2148 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 2149 }; 2150 2151 2152 #undef CC 2153 2154 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2155 { 2156 if (WhiteBoxAPI) { 2157 // Make sure that wbclass is loaded by the null classloader 2158 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass()); 2159 Handle loader(THREAD, ik->class_loader()); 2160 if (loader.is_null()) { 2161 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2162 WhiteBox::set_used(); 2163 } 2164 } 2165 } 2166 JVM_END