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/protectionDomainCache.hpp" 32 #include "classfile/stringTable.hpp" 33 #include "code/codeCache.hpp" 34 #include "compiler/methodMatcher.hpp" 35 #include "compiler/directivesParser.hpp" 36 #include "gc/shared/gcConfig.hpp" 37 #include "gc/shared/genCollectedHeap.hpp" 38 #include "jvmtifiles/jvmtiEnv.hpp" 39 #include "memory/metadataFactory.hpp" 40 #include "memory/metaspaceShared.hpp" 41 #include "memory/iterator.hpp" 42 #include "memory/resourceArea.hpp" 43 #include "memory/universe.hpp" 44 #include "memory/oopFactory.hpp" 45 #include "oops/array.hpp" 46 #include "oops/constantPool.inline.hpp" 47 #include "oops/method.inline.hpp" 48 #include "oops/objArrayKlass.hpp" 49 #include "oops/objArrayOop.inline.hpp" 50 #include "oops/oop.inline.hpp" 51 #include "oops/typeArrayOop.inline.hpp" 52 #include "prims/resolvedMethodTable.hpp" 53 #include "prims/wbtestmethods/parserTests.hpp" 54 #include "prims/whitebox.inline.hpp" 55 #include "runtime/arguments.hpp" 56 #include "runtime/compilationPolicy.hpp" 57 #include "runtime/deoptimization.hpp" 58 #include "runtime/fieldDescriptor.inline.hpp" 59 #include "runtime/flags/jvmFlag.hpp" 60 #include "runtime/frame.inline.hpp" 61 #include "runtime/handshake.hpp" 62 #include "runtime/interfaceSupport.inline.hpp" 63 #include "runtime/javaCalls.hpp" 64 #include "runtime/jniHandles.inline.hpp" 65 #include "runtime/os.hpp" 66 #include "runtime/sweeper.hpp" 67 #include "runtime/thread.hpp" 68 #include "runtime/threadSMR.hpp" 69 #include "runtime/vm_version.hpp" 70 #include "services/memoryService.hpp" 71 #include "utilities/align.hpp" 72 #include "utilities/debug.hpp" 73 #include "utilities/elfFile.hpp" 74 #include "utilities/exceptions.hpp" 75 #include "utilities/macros.hpp" 76 #if INCLUDE_CDS 77 #include "prims/cdsoffsets.hpp" 78 #endif // INCLUDE_CDS 79 #if INCLUDE_G1GC 80 #include "gc/g1/g1CollectedHeap.inline.hpp" 81 #include "gc/g1/g1ConcurrentMark.hpp" 82 #include "gc/g1/g1ConcurrentMarkThread.hpp" 83 #include "gc/g1/heapRegionRemSet.hpp" 84 #endif // INCLUDE_G1GC 85 #if INCLUDE_PARALLELGC 86 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 87 #include "gc/parallel/adjoiningGenerations.hpp" 88 #endif // INCLUDE_PARALLELGC 89 #if INCLUDE_NMT 90 #include "services/mallocSiteTable.hpp" 91 #include "services/memTracker.hpp" 92 #include "utilities/nativeCallStack.hpp" 93 #endif // INCLUDE_NMT 94 95 #ifdef LINUX 96 #include "osContainer_linux.hpp" 97 #endif 98 99 #define SIZE_T_MAX_VALUE ((size_t) -1) 100 101 #define CHECK_JNI_EXCEPTION_(env, value) \ 102 do { \ 103 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 104 THREAD->clear_pending_jni_exception_check(); \ 105 if (HAS_PENDING_EXCEPTION) { \ 106 return(value); \ 107 } \ 108 } while (0) 109 110 #define CHECK_JNI_EXCEPTION(env) \ 111 do { \ 112 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 113 THREAD->clear_pending_jni_exception_check(); \ 114 if (HAS_PENDING_EXCEPTION) { \ 115 return; \ 116 } \ 117 } while (0) 118 119 bool WhiteBox::_used = false; 120 volatile bool WhiteBox::compilation_locked = false; 121 122 class VM_WhiteBoxOperation : public VM_Operation { 123 public: 124 VM_WhiteBoxOperation() { } 125 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 126 bool allow_nested_vm_operations() const { return true; } 127 }; 128 129 130 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 131 return (jlong)(void*)JNIHandles::resolve(obj); 132 WB_END 133 134 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 135 return heapOopSize; 136 WB_END 137 138 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 139 return os::vm_page_size(); 140 WB_END 141 142 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 143 return os::vm_allocation_granularity(); 144 WB_END 145 146 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 147 return os::large_page_size(); 148 WB_END 149 150 class WBIsKlassAliveClosure : public LockedClassesDo { 151 Symbol* _name; 152 bool _found; 153 public: 154 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} 155 156 void do_klass(Klass* k) { 157 if (_found) return; 158 Symbol* ksym = k->name(); 159 if (ksym->fast_compare(_name) == 0) { 160 _found = true; 161 } 162 } 163 164 bool found() const { 165 return _found; 166 } 167 }; 168 169 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) 170 oop h_name = JNIHandles::resolve(name); 171 if (h_name == NULL) return false; 172 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false); 173 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 174 175 WBIsKlassAliveClosure closure(sym); 176 ClassLoaderDataGraph::classes_do(&closure); 177 178 return closure.found(); 179 WB_END 180 181 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 182 #if INCLUDE_JVMTI 183 ResourceMark rm; 184 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 185 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 186 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 187 assert(err == JVMTI_ERROR_NONE, "must not fail"); 188 #endif 189 } 190 WB_END 191 192 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 193 #if INCLUDE_JVMTI 194 ResourceMark rm; 195 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 196 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 197 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 198 assert(err == JVMTI_ERROR_NONE, "must not fail"); 199 #endif 200 } 201 WB_END 202 203 204 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 205 return (jlong)Arguments::max_heap_for_compressed_oops(); 206 } 207 WB_END 208 209 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 210 CollectorPolicy * p = Universe::heap()->collector_policy(); 211 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " 212 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 213 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(), 214 p->space_alignment(), p->heap_alignment()); 215 } 216 WB_END 217 218 #ifndef PRODUCT 219 // Forward declaration 220 void TestReservedSpace_test(); 221 void TestReserveMemorySpecial_test(); 222 void TestVirtualSpace_test(); 223 void TestMetaspaceUtils_test(); 224 #endif 225 226 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) 227 #ifndef PRODUCT 228 TestReservedSpace_test(); 229 TestReserveMemorySpecial_test(); 230 TestVirtualSpace_test(); 231 TestMetaspaceUtils_test(); 232 #endif 233 WB_END 234 235 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 236 size_t granularity = os::vm_allocation_granularity(); 237 ReservedHeapSpace rhs(100 * granularity, granularity, false); 238 VirtualSpace vs; 239 vs.initialize(rhs, 50 * granularity); 240 241 // Check if constraints are complied 242 if (!( UseCompressedOops && rhs.base() != NULL && 243 Universe::narrow_oop_base() != NULL && 244 Universe::narrow_oop_use_implicit_null_checks() )) { 245 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 246 "\tUseCompressedOops is %d\n" 247 "\trhs.base() is " PTR_FORMAT "\n" 248 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n" 249 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d", 250 UseCompressedOops, 251 p2i(rhs.base()), 252 p2i(Universe::narrow_oop_base()), 253 Universe::narrow_oop_use_implicit_null_checks()); 254 return; 255 } 256 tty->print_cr("Reading from no access area... "); 257 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 258 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 259 WB_END 260 261 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 262 size_t magnitude, size_t iterations) { 263 size_t granularity = os::vm_allocation_granularity(); 264 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false); 265 VirtualSpace vs; 266 if (!vs.initialize(rhs, 0)) { 267 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 268 return 3; 269 } 270 271 int seed = os::random(); 272 tty->print_cr("Random seed is %d", seed); 273 os::init_random(seed); 274 275 for (size_t i = 0; i < iterations; i++) { 276 277 // Whether we will shrink or grow 278 bool shrink = os::random() % 2L == 0; 279 280 // Get random delta to resize virtual space 281 size_t delta = (size_t)os::random() % magnitude; 282 283 // If we are about to shrink virtual space below zero, then expand instead 284 if (shrink && vs.committed_size() < delta) { 285 shrink = false; 286 } 287 288 // Resizing by delta 289 if (shrink) { 290 vs.shrink_by(delta); 291 } else { 292 // If expanding fails expand_by will silently return false 293 vs.expand_by(delta, true); 294 } 295 } 296 return 0; 297 } 298 299 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 300 jlong reserved_space_size, jlong magnitude, jlong iterations)) 301 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 302 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 303 iterations); 304 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 305 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 306 return 1; 307 } 308 309 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 310 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 311 if (sizeof(size_t) < sizeof(jlong)) { 312 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; 313 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 314 || iterations > size_t_max_value) { 315 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 316 return 2; 317 } 318 } 319 320 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 321 (size_t) magnitude, (size_t) iterations); 322 WB_END 323 324 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name)) 325 return GCConfig::is_gc_supported((CollectedHeap::Name)name); 326 WB_END 327 328 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name)) 329 return GCConfig::is_gc_selected((CollectedHeap::Name)name); 330 WB_END 331 332 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o)) 333 return GCConfig::is_gc_selected_ergonomically(); 334 WB_END 335 336 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 337 oop p = JNIHandles::resolve(obj); 338 #if INCLUDE_G1GC 339 if (UseG1GC) { 340 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 341 const HeapRegion* hr = g1h->heap_region_containing(p); 342 if (hr == NULL) { 343 return false; 344 } 345 return !(hr->is_young()); 346 } 347 #endif 348 #if INCLUDE_PARALLELGC 349 if (UseParallelGC) { 350 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 351 return !psh->is_in_young(p); 352 } 353 #endif 354 #if INCLUDE_ZGC 355 if (UseZGC) { 356 return Universe::heap()->is_in(p); 357 } 358 #endif 359 GenCollectedHeap* gch = GenCollectedHeap::heap(); 360 return !gch->is_in_young(p); 361 WB_END 362 363 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 364 oop p = JNIHandles::resolve(obj); 365 return p->size() * HeapWordSize; 366 WB_END 367 368 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 369 size_t alignment = Universe::heap()->collector_policy()->space_alignment(); 370 return (jlong)alignment; 371 WB_END 372 373 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 374 size_t alignment = Universe::heap()->collector_policy()->heap_alignment(); 375 return (jlong)alignment; 376 WB_END 377 378 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o)) 379 return Universe::heap()->supports_concurrent_phase_control(); 380 WB_END 381 382 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o)) 383 const char* const* phases = Universe::heap()->concurrent_phases(); 384 jint nphases = 0; 385 for ( ; phases[nphases] != NULL; ++nphases) ; 386 387 ResourceMark rm(thread); 388 ThreadToNativeFromVM ttn(thread); 389 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 390 CHECK_JNI_EXCEPTION_(env, NULL); 391 392 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL); 393 CHECK_JNI_EXCEPTION_(env, NULL); 394 395 // If push fails, return with pending exception. 396 if (env->PushLocalFrame(nphases) < 0) return NULL; 397 for (jint i = 0; i < nphases; ++i) { 398 jstring phase = env->NewStringUTF(phases[i]); 399 CHECK_JNI_EXCEPTION_(env, NULL); 400 env->SetObjectArrayElement(result, i, phase); 401 CHECK_JNI_EXCEPTION_(env, NULL); 402 } 403 env->PopLocalFrame(NULL); 404 405 return result; 406 WB_END 407 408 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name)) 409 Handle h_name(THREAD, JNIHandles::resolve(name)); 410 ResourceMark rm; 411 const char* c_name = java_lang_String::as_utf8_string(h_name()); 412 return Universe::heap()->request_concurrent_phase(c_name); 413 WB_END 414 415 #if INCLUDE_G1GC 416 417 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 418 if (UseG1GC) { 419 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 420 oop result = JNIHandles::resolve(obj); 421 const HeapRegion* hr = g1h->heap_region_containing(result); 422 return hr->is_humongous(); 423 } 424 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 425 WB_END 426 427 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 428 if (UseG1GC) { 429 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 430 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 431 return hr->is_humongous(); 432 } 433 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 434 WB_END 435 436 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 437 if (UseG1GC) { 438 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 439 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 440 return hr->is_free(); 441 } 442 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 443 WB_END 444 445 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 446 if (UseG1GC) { 447 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 448 size_t nr = g1h->max_regions(); 449 return (jlong)nr; 450 } 451 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 452 WB_END 453 454 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 455 if (UseG1GC) { 456 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 457 size_t nr = g1h->num_free_regions(); 458 return (jlong)nr; 459 } 460 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 461 WB_END 462 463 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 464 if (UseG1GC) { 465 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 466 return g1h->concurrent_mark()->cm_thread()->during_cycle(); 467 } 468 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 469 WB_END 470 471 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o)) 472 if (UseG1GC) { 473 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 474 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) { 475 g1h->collect(GCCause::_wb_conc_mark); 476 return true; 477 } 478 return false; 479 } 480 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled"); 481 WB_END 482 483 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 484 if (UseG1GC) { 485 return (jint)HeapRegion::GrainBytes; 486 } 487 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 488 WB_END 489 490 #endif // INCLUDE_G1GC 491 492 #if INCLUDE_PARALLELGC 493 494 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 495 if (UseParallelGC) { 496 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment(); 497 } 498 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 499 WB_END 500 501 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 502 if (UseParallelGC) { 503 return ParallelScavengeHeap::heap()->generation_alignment(); 504 } 505 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 506 WB_END 507 508 #endif // INCLUDE_PARALLELGC 509 510 #if INCLUDE_G1GC 511 512 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 513 if (UseG1GC) { 514 ResourceMark rm(THREAD); 515 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 516 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 517 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 518 return JNIHandles::make_local(env, h()); 519 } 520 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 521 WB_END 522 523 class OldRegionsLivenessClosure: public HeapRegionClosure { 524 525 private: 526 const int _liveness; 527 size_t _total_count; 528 size_t _total_memory; 529 size_t _total_memory_to_free; 530 531 public: 532 OldRegionsLivenessClosure(int liveness) : 533 _liveness(liveness), 534 _total_count(0), 535 _total_memory(0), 536 _total_memory_to_free(0) { } 537 538 size_t total_count() { return _total_count; } 539 size_t total_memory() { return _total_memory; } 540 size_t total_memory_to_free() { return _total_memory_to_free; } 541 542 bool do_heap_region(HeapRegion* r) { 543 if (r->is_old()) { 544 size_t prev_live = r->marked_bytes(); 545 size_t live = r->live_bytes(); 546 size_t size = r->used(); 547 size_t reg_size = HeapRegion::GrainBytes; 548 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 549 _total_memory += size; 550 ++_total_count; 551 if (size == reg_size) { 552 // we don't include non-full regions since they are unlikely included in mixed gc 553 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 554 _total_memory_to_free += size - prev_live; 555 } 556 } 557 } 558 return false; 559 } 560 }; 561 562 563 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 564 if (!UseG1GC) { 565 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 566 } 567 if (liveness < 0) { 568 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 569 } 570 571 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 572 OldRegionsLivenessClosure rli(liveness); 573 g1h->heap_region_iterate(&rli); 574 575 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 576 result->long_at_put(0, rli.total_count()); 577 result->long_at_put(1, rli.total_memory()); 578 result->long_at_put(2, rli.total_memory_to_free()); 579 return (jlongArray) JNIHandles::make_local(env, result); 580 WB_END 581 582 #endif // INCLUDE_G1GC 583 584 #if INCLUDE_NMT 585 // Alloc memory using the test memory type so that we can use that to see if 586 // NMT picks it up correctly 587 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 588 jlong addr = 0; 589 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 590 return addr; 591 WB_END 592 593 // Alloc memory with pseudo call stack. The test can create psudo malloc 594 // allocation site to stress the malloc tracking. 595 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 596 address pc = (address)(size_t)pseudo_stack; 597 NativeCallStack stack(&pc, 1); 598 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 599 WB_END 600 601 // Free the memory allocated by NMTAllocTest 602 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 603 os::free((void*)(uintptr_t)mem); 604 WB_END 605 606 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 607 jlong addr = 0; 608 609 addr = (jlong)(uintptr_t)os::reserve_memory(size); 610 MemTracker::record_virtual_memory_type((address)addr, mtTest); 611 612 return addr; 613 WB_END 614 615 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size)) 616 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr); 617 MemTracker::record_virtual_memory_type((address)addr, mtTest); 618 619 return addr; 620 WB_END 621 622 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 623 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 624 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 625 WB_END 626 627 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 628 os::uncommit_memory((char *)(uintptr_t)addr, size); 629 WB_END 630 631 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 632 os::release_memory((char *)(uintptr_t)addr, size); 633 WB_END 634 635 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env)) 636 // Test that we can downgrade NMT levels but not upgrade them. 637 if (MemTracker::tracking_level() == NMT_off) { 638 MemTracker::transition_to(NMT_off); 639 return MemTracker::tracking_level() == NMT_off; 640 } else { 641 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking"); 642 MemTracker::transition_to(NMT_summary); 643 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now"); 644 645 // Can't go to detail once NMT is set to summary. 646 MemTracker::transition_to(NMT_detail); 647 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now"); 648 649 // Shutdown sets tracking level to minimal. 650 MemTracker::shutdown(); 651 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); 652 653 // Once the tracking level is minimal, we cannot increase to summary. 654 // The code ignores this request instead of asserting because if the malloc site 655 // table overflows in another thread, it tries to change the code to summary. 656 MemTracker::transition_to(NMT_summary); 657 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 658 659 // Really can never go up to detail, verify that the code would never do this. 660 MemTracker::transition_to(NMT_detail); 661 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 662 return MemTracker::tracking_level() == NMT_minimal; 663 } 664 WB_END 665 666 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 667 int hash_size = MallocSiteTable::hash_buckets(); 668 assert(hash_size > 0, "NMT hash_size should be > 0"); 669 return (jint)hash_size; 670 WB_END 671 #endif // INCLUDE_NMT 672 673 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 674 assert(method != NULL, "method should not be null"); 675 ThreadToNativeFromVM ttn(thread); 676 return env->FromReflectedMethod(method); 677 } 678 679 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 680 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 681 private: 682 int _result; 683 const bool _make_not_entrant; 684 public: 685 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 686 _result(0), _make_not_entrant(make_not_entrant) { } 687 int result() const { return _result; } 688 689 void doit() { 690 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 691 if (t->has_last_Java_frame()) { 692 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) { 693 frame* f = fst.current(); 694 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 695 RegisterMap* reg_map = fst.register_map(); 696 Deoptimization::deoptimize(t, *f, reg_map); 697 if (_make_not_entrant) { 698 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 699 assert(cm != NULL, "sanity check"); 700 cm->make_not_entrant(); 701 } 702 ++_result; 703 } 704 } 705 } 706 } 707 } 708 }; 709 710 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 711 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 712 VMThread::execute(&op); 713 return op.result(); 714 WB_END 715 716 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 717 MutexLockerEx mu(Compile_lock); 718 CodeCache::mark_all_nmethods_for_deoptimization(); 719 VM_Deoptimize op; 720 VMThread::execute(&op); 721 WB_END 722 723 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 724 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 725 int result = 0; 726 CHECK_JNI_EXCEPTION_(env, result); 727 MutexLockerEx mu(Compile_lock); 728 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 729 if (is_osr) { 730 result += mh->mark_osr_nmethods(); 731 } else if (mh->code() != NULL) { 732 mh->code()->mark_for_deoptimization(); 733 ++result; 734 } 735 result += CodeCache::mark_for_deoptimization(mh()); 736 if (result > 0) { 737 VM_Deoptimize op; 738 VMThread::execute(&op); 739 } 740 return result; 741 WB_END 742 743 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 744 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 745 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 746 MutexLockerEx mu(Compile_lock); 747 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 748 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 749 if (code == NULL) { 750 return JNI_FALSE; 751 } 752 return (code->is_alive() && !code->is_marked_for_deoptimization()); 753 WB_END 754 755 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 756 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 757 return false; 758 } 759 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 760 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 761 MutexLockerEx mu(Compile_lock); 762 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 763 if (is_osr) { 764 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); 765 } else { 766 return CompilationPolicy::can_be_compiled(mh, comp_level); 767 } 768 WB_END 769 770 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 771 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 772 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 773 MutexLockerEx mu(Compile_lock); 774 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 775 return mh->queued_for_compilation(); 776 WB_END 777 778 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 779 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 780 return false; // Intrinsic is not available on a non-existent compilation level. 781 } 782 jmethodID method_id, compilation_context_id; 783 method_id = reflected_method_to_jmid(thread, env, method); 784 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 785 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 786 787 DirectiveSet* directive; 788 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 789 assert(comp != NULL, "compiler not available"); 790 if (compilation_context != NULL) { 791 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 792 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 793 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 794 directive = DirectivesStack::getMatchingDirective(cch, comp); 795 } else { 796 // Calling with NULL matches default directive 797 directive = DirectivesStack::getDefaultDirective(comp); 798 } 799 bool result = comp->is_intrinsic_available(mh, directive); 800 DirectivesStack::release(directive); 801 return result; 802 WB_END 803 804 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 805 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 806 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 807 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 808 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 809 return (code != NULL ? code->comp_level() : CompLevel_none); 810 WB_END 811 812 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 813 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 814 CHECK_JNI_EXCEPTION(env); 815 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 816 if (is_osr) { 817 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox"); 818 } else { 819 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); 820 } 821 WB_END 822 823 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 824 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 825 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 826 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 827 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 828 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 829 WB_END 830 831 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 832 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 833 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 834 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 835 bool result = mh->dont_inline(); 836 mh->set_dont_inline(value == JNI_TRUE); 837 return result; 838 WB_END 839 840 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 841 if (comp_level == CompLevel_any) { 842 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 843 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 844 } else { 845 return CompileBroker::queue_size(comp_level); 846 } 847 WB_END 848 849 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 850 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 851 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 852 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 853 bool result = mh->force_inline(); 854 mh->set_force_inline(value == JNI_TRUE); 855 return result; 856 WB_END 857 858 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) { 859 // Screen for unavailable/bad comp level or null method 860 AbstractCompiler* comp = CompileBroker::compiler(comp_level); 861 if (method == NULL) { 862 tty->print_cr("WB error: request to compile NULL method"); 863 return false; 864 } 865 if (comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 866 tty->print_cr("WB error: invalid compilation level %d", comp_level); 867 return false; 868 } 869 if (comp == NULL) { 870 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level); 871 return false; 872 } 873 874 // Check if compilation is blocking 875 methodHandle mh(THREAD, method); 876 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 877 bool is_blocking = !directive->BackgroundCompilationOption; 878 DirectivesStack::release(directive); 879 880 // Compile method and check result 881 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD); 882 MutexLockerEx mu(Compile_lock); 883 bool is_queued = mh->queued_for_compilation(); 884 if ((!is_blocking && is_queued) || nm != NULL) { 885 return true; 886 } 887 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level); 888 mh->print_short_name(tty); 889 tty->cr(); 890 if (is_blocking && is_queued) { 891 tty->print_cr("WB error: blocking compilation is still in queue!"); 892 } 893 return false; 894 } 895 896 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 897 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 898 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 899 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 900 WB_END 901 902 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 903 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 904 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD); 905 WB_END 906 907 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 908 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 909 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 910 911 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 912 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 913 bool result = directive->PrintAssemblyOption; 914 DirectivesStack::release(directive); 915 916 return result; 917 WB_END 918 919 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 920 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 921 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 922 923 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 924 925 ResourceMark rm; 926 const char* error_msg = NULL; 927 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 928 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 929 930 if (m == NULL) { 931 assert(error_msg != NULL, "Always have an error message"); 932 tty->print_cr("Got error: %s", error_msg); 933 return -1; // Pattern failed 934 } 935 936 // Pattern works - now check if it matches 937 int result; 938 if (m->match(mh, InlineMatcher::force_inline)) { 939 result = 2; // Force inline match 940 } else if (m->match(mh, InlineMatcher::dont_inline)) { 941 result = 1; // Dont inline match 942 } else { 943 result = 0; // No match 944 } 945 delete m; 946 return result; 947 WB_END 948 949 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 950 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 951 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 952 953 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 954 955 ResourceMark rm; 956 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 957 958 const char* error_msg = NULL; 959 960 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg); 961 if (m == NULL) { 962 assert(error_msg != NULL, "Must have error_msg"); 963 tty->print_cr("Got error: %s", error_msg); 964 return -1; 965 } 966 967 // Pattern works - now check if it matches 968 int result = m->matches(mh); 969 delete m; 970 assert(result == 0 || result == 1, "Result out of range"); 971 return result; 972 WB_END 973 974 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 975 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 976 CHECK_JNI_EXCEPTION(env); 977 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 978 MutexLockerEx mu(Compile_lock); 979 MethodData* mdo = mh->method_data(); 980 MethodCounters* mcs = mh->method_counters(); 981 982 if (mdo != NULL) { 983 mdo->init(); 984 ResourceMark rm; 985 int arg_count = mdo->method()->size_of_parameters(); 986 for (int i = 0; i < arg_count; i++) { 987 mdo->set_arg_modified(i, 0); 988 } 989 MutexLockerEx mu(mdo->extra_data_lock()); 990 mdo->clean_method_data(/*always_clean*/true); 991 } 992 993 mh->clear_not_c1_compilable(); 994 mh->clear_not_c2_compilable(); 995 mh->clear_not_c2_osr_compilable(); 996 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 997 if (mcs != NULL) { 998 mcs->backedge_counter()->init(); 999 mcs->invocation_counter()->init(); 1000 mcs->set_interpreter_invocation_count(0); 1001 mcs->set_interpreter_throwout_count(0); 1002 1003 #ifdef TIERED 1004 mcs->set_rate(0.0F); 1005 mh->set_prev_event_count(0); 1006 mh->set_prev_time(0); 1007 #endif 1008 } 1009 WB_END 1010 1011 template <typename T> 1012 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const char*, T*, bool, bool)) { 1013 if (name == NULL) { 1014 return false; 1015 } 1016 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1017 const char* flag_name = env->GetStringUTFChars(name, NULL); 1018 CHECK_JNI_EXCEPTION_(env, false); 1019 JVMFlag::Error result = (*TAt)(flag_name, value, true, true); 1020 env->ReleaseStringUTFChars(name, flag_name); 1021 return (result == JVMFlag::SUCCESS); 1022 } 1023 1024 template <typename T> 1025 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(const char*, T*, JVMFlag::Flags)) { 1026 if (name == NULL) { 1027 return false; 1028 } 1029 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1030 const char* flag_name = env->GetStringUTFChars(name, NULL); 1031 CHECK_JNI_EXCEPTION_(env, false); 1032 JVMFlag::Error result = (*TAtPut)(flag_name, value, JVMFlag::INTERNAL); 1033 env->ReleaseStringUTFChars(name, flag_name); 1034 return (result == JVMFlag::SUCCESS); 1035 } 1036 1037 template <typename T> 1038 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1039 ResourceMark rm(thread); 1040 jclass clazz = env->FindClass(name->as_C_string()); 1041 CHECK_JNI_EXCEPTION_(env, NULL); 1042 jmethodID methodID = env->GetStaticMethodID(clazz, 1043 vmSymbols::valueOf_name()->as_C_string(), 1044 sig->as_C_string()); 1045 CHECK_JNI_EXCEPTION_(env, NULL); 1046 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1047 CHECK_JNI_EXCEPTION_(env, NULL); 1048 return result; 1049 } 1050 1051 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1052 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1053 } 1054 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1055 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1056 } 1057 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1058 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1059 } 1060 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1061 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1062 }*/ 1063 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1064 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1065 } 1066 1067 static JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1068 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1069 const char* flag_name = env->GetStringUTFChars(name, NULL); 1070 CHECK_JNI_EXCEPTION_(env, NULL); 1071 JVMFlag* result = JVMFlag::find_flag(flag_name, strlen(flag_name), true, true); 1072 env->ReleaseStringUTFChars(name, flag_name); 1073 return result; 1074 } 1075 1076 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1077 JVMFlag* flag = getVMFlag(thread, env, name); 1078 return (flag != NULL) && flag->is_constant_in_binary(); 1079 WB_END 1080 1081 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1082 JVMFlag* flag = getVMFlag(thread, env, name); 1083 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 1084 WB_END 1085 1086 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1087 bool result; 1088 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) { 1089 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1090 return booleanBox(thread, env, result); 1091 } 1092 return NULL; 1093 WB_END 1094 1095 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1096 int result; 1097 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) { 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_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1105 uint result; 1106 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) { 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_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1114 intx result; 1115 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) { 1116 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1117 return longBox(thread, env, result); 1118 } 1119 return NULL; 1120 WB_END 1121 1122 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1123 uintx result; 1124 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) { 1125 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1126 return longBox(thread, env, result); 1127 } 1128 return NULL; 1129 WB_END 1130 1131 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1132 uint64_t result; 1133 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) { 1134 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1135 return longBox(thread, env, result); 1136 } 1137 return NULL; 1138 WB_END 1139 1140 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1141 size_t result; 1142 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) { 1143 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1144 return longBox(thread, env, result); 1145 } 1146 return NULL; 1147 WB_END 1148 1149 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1150 double result; 1151 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) { 1152 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1153 return doubleBox(thread, env, result); 1154 } 1155 return NULL; 1156 WB_END 1157 1158 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1159 ccstr ccstrResult; 1160 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) { 1161 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1162 jstring result = env->NewStringUTF(ccstrResult); 1163 CHECK_JNI_EXCEPTION_(env, NULL); 1164 return result; 1165 } 1166 return NULL; 1167 WB_END 1168 1169 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1170 bool result = value == JNI_TRUE ? true : false; 1171 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut); 1172 WB_END 1173 1174 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1175 int result = value; 1176 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut); 1177 WB_END 1178 1179 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1180 uint result = value; 1181 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut); 1182 WB_END 1183 1184 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1185 intx result = value; 1186 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut); 1187 WB_END 1188 1189 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1190 uintx result = value; 1191 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut); 1192 WB_END 1193 1194 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1195 uint64_t result = value; 1196 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut); 1197 WB_END 1198 1199 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1200 size_t result = value; 1201 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut); 1202 WB_END 1203 1204 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1205 double result = value; 1206 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut); 1207 WB_END 1208 1209 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1210 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1211 const char* ccstrValue; 1212 if (value == NULL) { 1213 ccstrValue = NULL; 1214 } 1215 else { 1216 ccstrValue = env->GetStringUTFChars(value, NULL); 1217 CHECK_JNI_EXCEPTION(env); 1218 } 1219 ccstr ccstrResult = ccstrValue; 1220 bool needFree; 1221 { 1222 ThreadInVMfromNative ttvfn(thread); // back to VM 1223 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut); 1224 } 1225 if (value != NULL) { 1226 env->ReleaseStringUTFChars(value, ccstrValue); 1227 } 1228 if (needFree) { 1229 FREE_C_HEAP_ARRAY(char, ccstrResult); 1230 } 1231 WB_END 1232 1233 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1234 WhiteBox::compilation_locked = true; 1235 WB_END 1236 1237 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1238 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1239 WhiteBox::compilation_locked = false; 1240 mo.notify_all(); 1241 WB_END 1242 1243 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 1244 // Force a code cache sweep and block until it finished 1245 NMethodSweeper::force_sweep(); 1246 WB_END 1247 1248 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1249 ResourceMark rm(THREAD); 1250 int len; 1251 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1252 return (StringTable::lookup(name, len) != NULL); 1253 WB_END 1254 1255 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1256 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1257 Universe::heap()->collect(GCCause::_wb_full_gc); 1258 #if INCLUDE_G1GC 1259 if (UseG1GC) { 1260 // Needs to be cleared explicitly for G1 1261 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1262 } 1263 #endif // INCLUDE_G1GC 1264 WB_END 1265 1266 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1267 Universe::heap()->collect(GCCause::_wb_young_gc); 1268 WB_END 1269 1270 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1271 // static+volatile in order to force the read to happen 1272 // (not be eliminated by the compiler) 1273 static char c; 1274 static volatile char* p; 1275 1276 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 1277 if (p == NULL) { 1278 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1279 } 1280 1281 c = *p; 1282 WB_END 1283 1284 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1285 const char* features = VM_Version::features_string(); 1286 ThreadToNativeFromVM ttn(thread); 1287 jstring features_string = env->NewStringUTF(features); 1288 1289 CHECK_JNI_EXCEPTION_(env, NULL); 1290 1291 return features_string; 1292 WB_END 1293 1294 int WhiteBox::get_blob_type(const CodeBlob* code) { 1295 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1296 if (code->is_aot()) { 1297 return -1; 1298 } 1299 return CodeCache::get_code_heap(code)->code_blob_type(); 1300 } 1301 1302 CodeHeap* WhiteBox::get_code_heap(int blob_type) { 1303 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1304 return CodeCache::get_code_heap(blob_type); 1305 } 1306 1307 struct CodeBlobStub { 1308 CodeBlobStub(const CodeBlob* blob) : 1309 name(os::strdup(blob->name())), 1310 size(blob->size()), 1311 blob_type(WhiteBox::get_blob_type(blob)), 1312 address((jlong) blob) { } 1313 ~CodeBlobStub() { os::free((void*) name); } 1314 const char* const name; 1315 const jint size; 1316 const jint blob_type; 1317 const jlong address; 1318 }; 1319 1320 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1321 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1322 CHECK_JNI_EXCEPTION_(env, NULL); 1323 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1324 1325 jstring name = env->NewStringUTF(cb->name); 1326 CHECK_JNI_EXCEPTION_(env, NULL); 1327 env->SetObjectArrayElement(result, 0, name); 1328 1329 jobject obj = integerBox(thread, env, cb->size); 1330 CHECK_JNI_EXCEPTION_(env, NULL); 1331 env->SetObjectArrayElement(result, 1, obj); 1332 1333 obj = integerBox(thread, env, cb->blob_type); 1334 CHECK_JNI_EXCEPTION_(env, NULL); 1335 env->SetObjectArrayElement(result, 2, obj); 1336 1337 obj = longBox(thread, env, cb->address); 1338 CHECK_JNI_EXCEPTION_(env, NULL); 1339 env->SetObjectArrayElement(result, 3, obj); 1340 1341 return result; 1342 } 1343 1344 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1345 ResourceMark rm(THREAD); 1346 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1347 CHECK_JNI_EXCEPTION_(env, NULL); 1348 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1349 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1350 jobjectArray result = NULL; 1351 if (code == NULL) { 1352 return result; 1353 } 1354 int comp_level = code->comp_level(); 1355 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size(); 1356 1357 ThreadToNativeFromVM ttn(thread); 1358 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1359 CHECK_JNI_EXCEPTION_(env, NULL); 1360 result = env->NewObjectArray(5, clazz, NULL); 1361 if (result == NULL) { 1362 return result; 1363 } 1364 1365 CodeBlobStub stub(code); 1366 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1367 CHECK_JNI_EXCEPTION_(env, NULL); 1368 env->SetObjectArrayElement(result, 0, codeBlob); 1369 1370 jobject level = integerBox(thread, env, comp_level); 1371 CHECK_JNI_EXCEPTION_(env, NULL); 1372 env->SetObjectArrayElement(result, 1, level); 1373 1374 jbyteArray insts = env->NewByteArray(insts_size); 1375 CHECK_JNI_EXCEPTION_(env, NULL); 1376 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1377 env->SetObjectArrayElement(result, 2, insts); 1378 1379 jobject id = integerBox(thread, env, code->compile_id()); 1380 CHECK_JNI_EXCEPTION_(env, NULL); 1381 env->SetObjectArrayElement(result, 3, id); 1382 1383 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1384 CHECK_JNI_EXCEPTION_(env, NULL); 1385 env->SetObjectArrayElement(result, 4, entry_point); 1386 1387 return result; 1388 WB_END 1389 1390 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1391 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1392 BufferBlob* blob; 1393 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1394 if (full_size < size) { 1395 full_size += align_up(size - full_size, oopSize); 1396 } 1397 { 1398 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1399 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1400 if (blob != NULL) { 1401 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1402 } 1403 } 1404 // Track memory usage statistic after releasing CodeCache_lock 1405 MemoryService::track_code_cache_memory_usage(); 1406 return blob; 1407 } 1408 1409 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1410 if (size < 0) { 1411 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1412 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1413 } 1414 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1415 WB_END 1416 1417 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1418 if (addr == 0) { 1419 return; 1420 } 1421 BufferBlob::free((BufferBlob*) addr); 1422 WB_END 1423 1424 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1425 ResourceMark rm; 1426 GrowableArray<CodeBlobStub*> blobs; 1427 { 1428 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1429 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1430 if (heap == NULL) { 1431 return NULL; 1432 } 1433 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1434 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1435 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1436 new (stub) CodeBlobStub(cb); 1437 blobs.append(stub); 1438 } 1439 } 1440 if (blobs.length() == 0) { 1441 return NULL; 1442 } 1443 ThreadToNativeFromVM ttn(thread); 1444 jobjectArray result = NULL; 1445 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1446 CHECK_JNI_EXCEPTION_(env, NULL); 1447 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1448 CHECK_JNI_EXCEPTION_(env, NULL); 1449 if (result == NULL) { 1450 return result; 1451 } 1452 int i = 0; 1453 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1454 it != blobs.end(); ++it) { 1455 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1456 CHECK_JNI_EXCEPTION_(env, NULL); 1457 env->SetObjectArrayElement(result, i, obj); 1458 CHECK_JNI_EXCEPTION_(env, NULL); 1459 ++i; 1460 } 1461 return result; 1462 WB_END 1463 1464 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1465 return CompileBroker::get_compilation_activity_mode(); 1466 WB_END 1467 1468 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1469 if (addr == 0) { 1470 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1471 "WB_GetCodeBlob: addr is null"); 1472 } 1473 ThreadToNativeFromVM ttn(thread); 1474 CodeBlobStub stub((CodeBlob*) addr); 1475 return codeBlob2objectArray(thread, env, &stub); 1476 WB_END 1477 1478 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1479 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1480 CHECK_JNI_EXCEPTION_(env, 0); 1481 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1482 return (jlong) mh->method_data(); 1483 WB_END 1484 1485 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1486 return (jlong) Thread::current()->stack_size(); 1487 WB_END 1488 1489 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1490 JavaThread* t = JavaThread::current(); 1491 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size(); 1492 WB_END 1493 1494 1495 int WhiteBox::array_bytes_to_length(size_t bytes) { 1496 return Array<u1>::bytes_to_length(bytes); 1497 } 1498 1499 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1500 if (size < 0) { 1501 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1502 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1503 } 1504 1505 oop class_loader_oop = JNIHandles::resolve(class_loader); 1506 ClassLoaderData* cld = class_loader_oop != NULL 1507 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1508 : ClassLoaderData::the_null_class_loader_data(); 1509 1510 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1511 1512 return (jlong)(uintptr_t)metadata; 1513 WB_END 1514 1515 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 1516 oop class_loader_oop = JNIHandles::resolve(class_loader); 1517 ClassLoaderData* cld = class_loader_oop != NULL 1518 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1519 : ClassLoaderData::the_null_class_loader_data(); 1520 1521 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 1522 WB_END 1523 1524 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1525 jstring version, jstring location, jobjectArray packages)) 1526 ResourceMark rm(THREAD); 1527 1528 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages)); 1529 objArrayHandle packages_h(THREAD, packages_oop); 1530 int num_packages = (packages_h == NULL ? 0 : packages_h->length()); 1531 1532 char** pkgs = NULL; 1533 if (num_packages > 0) { 1534 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages); 1535 for (int x = 0; x < num_packages; x++) { 1536 oop pkg_str = packages_h->obj_at(x); 1537 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) { 1538 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 1539 err_msg("Bad package name")); 1540 } 1541 pkgs[x] = java_lang_String::as_utf8_string(pkg_str); 1542 } 1543 } 1544 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK); 1545 WB_END 1546 1547 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1548 ResourceMark rm(THREAD); 1549 char* package_name = NULL; 1550 if (package != NULL) { 1551 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1552 } 1553 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK); 1554 WB_END 1555 1556 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1557 ResourceMark rm(THREAD); 1558 char* package_name = NULL; 1559 if (package != NULL) { 1560 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1561 } 1562 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK); 1563 WB_END 1564 1565 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1566 ResourceMark rm(THREAD); 1567 char* package_name = NULL; 1568 if (package != NULL) { 1569 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1570 } 1571 Modules::add_module_exports(module, package_name, NULL, CHECK); 1572 WB_END 1573 1574 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1575 Modules::add_reads_module(from_module, source_module, CHECK); 1576 WB_END 1577 1578 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1579 if (inc < 0) { 1580 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1581 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1582 } 1583 1584 jlong max_size_t = (jlong) ((size_t) -1); 1585 if (inc > max_size_t) { 1586 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1587 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1588 } 1589 1590 size_t new_cap_until_GC = 0; 1591 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1592 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1593 if (!success) { 1594 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1595 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1596 "due to contention with another thread"); 1597 } 1598 return (jlong) new_cap_until_GC; 1599 WB_END 1600 1601 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1602 return (jlong) MetaspaceGC::capacity_until_GC(); 1603 WB_END 1604 1605 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb)) 1606 return MetaspaceGC::should_concurrent_collect(); 1607 WB_END 1608 1609 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb)) 1610 return (jlong)Metaspace::reserve_alignment(); 1611 WB_END 1612 1613 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue)) 1614 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ? 1615 Monitor::_safepoint_check_always : 1616 Monitor::_safepoint_check_never; 1617 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required), 1618 attemptedNoSafepointValue == JNI_TRUE); 1619 WB_END 1620 1621 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1622 oop obj_oop = JNIHandles::resolve(obj); 1623 return (jboolean) obj_oop->mark()->has_monitor(); 1624 WB_END 1625 1626 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1627 VM_ForceSafepoint force_safepoint_op; 1628 VMThread::execute(&force_safepoint_op); 1629 WB_END 1630 1631 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1632 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1633 return (jlong) ik->constants(); 1634 WB_END 1635 1636 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1637 return ConstantPool::CPCACHE_INDEX_TAG; 1638 WB_END 1639 1640 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1641 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1642 ConstantPool* cp = ik->constants(); 1643 if (cp->cache() == NULL) { 1644 return -1; 1645 } 1646 return cp->cache()->length(); 1647 WB_END 1648 1649 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1650 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1651 ConstantPool* cp = ik->constants(); 1652 if (cp->cache() == NULL) { 1653 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1654 } 1655 jint cpci = index; 1656 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1657 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1658 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1659 } 1660 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1661 return cpi; 1662 WB_END 1663 1664 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1665 return ConstantPool::encode_invokedynamic_index(index); 1666 WB_END 1667 1668 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1669 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1670 VMThread::execute(&clear_ics); 1671 WB_END 1672 1673 template <typename T> 1674 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1675 assert(value != NULL, "sanity"); 1676 if (method == NULL || name == NULL) { 1677 return false; 1678 } 1679 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1680 CHECK_JNI_EXCEPTION_(env, false); 1681 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1682 // can't be in VM when we call JNI 1683 ThreadToNativeFromVM ttnfv(thread); 1684 const char* flag_name = env->GetStringUTFChars(name, NULL); 1685 CHECK_JNI_EXCEPTION_(env, false); 1686 bool result = CompilerOracle::has_option_value(mh, flag_name, *value); 1687 env->ReleaseStringUTFChars(name, flag_name); 1688 return result; 1689 } 1690 1691 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1692 bool result; 1693 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1694 // can't be in VM when we call JNI 1695 ThreadToNativeFromVM ttnfv(thread); 1696 return booleanBox(thread, env, result); 1697 } 1698 return NULL; 1699 WB_END 1700 1701 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1702 intx result; 1703 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1704 // can't be in VM when we call JNI 1705 ThreadToNativeFromVM ttnfv(thread); 1706 return longBox(thread, env, result); 1707 } 1708 return NULL; 1709 WB_END 1710 1711 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1712 uintx result; 1713 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1714 // can't be in VM when we call JNI 1715 ThreadToNativeFromVM ttnfv(thread); 1716 return longBox(thread, env, result); 1717 } 1718 return NULL; 1719 WB_END 1720 1721 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1722 double result; 1723 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1724 // can't be in VM when we call JNI 1725 ThreadToNativeFromVM ttnfv(thread); 1726 return doubleBox(thread, env, result); 1727 } 1728 return NULL; 1729 WB_END 1730 1731 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1732 ccstr ccstrResult; 1733 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 1734 // can't be in VM when we call JNI 1735 ThreadToNativeFromVM ttnfv(thread); 1736 jstring result = env->NewStringUTF(ccstrResult); 1737 CHECK_JNI_EXCEPTION_(env, NULL); 1738 return result; 1739 } 1740 return NULL; 1741 WB_END 1742 1743 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 1744 oop obj_oop = JNIHandles::resolve(obj); 1745 return MetaspaceShared::is_archive_object(obj_oop); 1746 WB_END 1747 1748 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 1749 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1750 WB_END 1751 1752 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env)) 1753 return !StringTable::shared_string_mapped(); 1754 WB_END 1755 1756 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz)) 1757 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 1758 if (k->is_instance_klass()) { 1759 InstanceKlass *ik = InstanceKlass::cast(k); 1760 ConstantPool *cp = ik->constants(); 1761 objArrayOop refs = cp->resolved_references(); 1762 return (jobject)JNIHandles::make_local(env, refs); 1763 } else { 1764 return NULL; 1765 } 1766 WB_END 1767 1768 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 1769 return MetaspaceShared::open_archive_heap_region_mapped(); 1770 WB_END 1771 1772 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env)) 1773 #if INCLUDE_CDS 1774 # ifdef _LP64 1775 if (!UseCompressedOops || !UseCompressedClassPointers) { 1776 // On 64-bit VMs, CDS is supported only with compressed oops/pointers 1777 return false; 1778 } 1779 # endif // _LP64 1780 return true; 1781 #else 1782 return false; 1783 #endif // INCLUDE_CDS 1784 WB_END 1785 1786 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env)) 1787 return MetaspaceShared::is_heap_object_archiving_allowed(); 1788 WB_END 1789 1790 1791 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env)) 1792 #if INCLUDE_JFR 1793 return true; 1794 #else 1795 return false; 1796 #endif // INCLUDE_JFR 1797 WB_END 1798 1799 #if INCLUDE_CDS 1800 1801 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name)) 1802 ResourceMark rm; 1803 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 1804 int result = CDSOffsets::find_offset(c_name); 1805 return (jint)result; 1806 WB_END 1807 1808 #endif // INCLUDE_CDS 1809 1810 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 1811 class TraceSelfClosure : public ThreadClosure { 1812 jint _num_threads_completed; 1813 1814 void do_thread(Thread* th) { 1815 assert(th->is_Java_thread(), "sanity"); 1816 JavaThread* jt = (JavaThread*)th; 1817 ResourceMark rm; 1818 1819 jt->print_on(tty); 1820 jt->print_stack_on(tty); 1821 tty->cr(); 1822 Atomic::inc(&_num_threads_completed); 1823 } 1824 1825 public: 1826 TraceSelfClosure() : _num_threads_completed(0) {} 1827 1828 jint num_threads_completed() const { return _num_threads_completed; } 1829 }; 1830 TraceSelfClosure tsc; 1831 1832 if (all_threads) { 1833 Handshake::execute(&tsc); 1834 } else { 1835 oop thread_oop = JNIHandles::resolve(thread_handle); 1836 if (thread_oop != NULL) { 1837 JavaThread* target = java_lang_Thread::thread(thread_oop); 1838 Handshake::execute(&tsc, target); 1839 } 1840 } 1841 return tsc.num_threads_completed(); 1842 WB_END 1843 1844 //Some convenience methods to deal with objects from java 1845 int WhiteBox::offset_for_field(const char* field_name, oop object, 1846 Symbol* signature_symbol) { 1847 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 1848 Thread* THREAD = Thread::current(); 1849 1850 //Get the class of our object 1851 Klass* arg_klass = object->klass(); 1852 //Turn it into an instance-klass 1853 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 1854 1855 //Create symbols to look for in the class 1856 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), 1857 THREAD); 1858 1859 //To be filled in with an offset of the field we're looking for 1860 fieldDescriptor fd; 1861 1862 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 1863 if (res == NULL) { 1864 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 1865 name_symbol->as_C_string()); 1866 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 1867 } 1868 1869 //fetch the field at the offset we've found 1870 int dest_offset = fd.offset(); 1871 1872 return dest_offset; 1873 } 1874 1875 1876 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 1877 int offset = offset_for_field(field_name, object, 1878 vmSymbols::string_signature()); 1879 oop string = object->obj_field(offset); 1880 if (string == NULL) { 1881 return NULL; 1882 } 1883 const char* ret = java_lang_String::as_utf8_string(string); 1884 return ret; 1885 } 1886 1887 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 1888 int offset = 1889 offset_for_field(field_name, object, vmSymbols::bool_signature()); 1890 bool ret = (object->bool_field(offset) == JNI_TRUE); 1891 return ret; 1892 } 1893 1894 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 1895 ResourceMark rm; 1896 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1897 1898 // one by one registration natives for exception catching 1899 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 1900 CHECK_JNI_EXCEPTION(env); 1901 for (int i = 0, n = method_count; i < n; ++i) { 1902 // Skip dummy entries 1903 if (method_array[i].fnPtr == NULL) continue; 1904 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 1905 jthrowable throwable_obj = env->ExceptionOccurred(); 1906 if (throwable_obj != NULL) { 1907 env->ExceptionClear(); 1908 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 1909 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 1910 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 1911 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 1912 method_array[i].name, method_array[i].signature); 1913 } 1914 } else { 1915 // Registration failed unexpectedly. 1916 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 1917 method_array[i].name, method_array[i].signature); 1918 env->UnregisterNatives(wbclass); 1919 break; 1920 } 1921 } 1922 } 1923 } 1924 1925 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 1926 // can't be in VM when we call JNI 1927 ThreadToNativeFromVM ttnfv(thread); 1928 const char* dir = env->GetStringUTFChars(compDirect, NULL); 1929 CHECK_JNI_EXCEPTION_(env, 0); 1930 int ret; 1931 { 1932 ThreadInVMfromNative ttvfn(thread); // back to VM 1933 ret = DirectivesParser::parse_string(dir, tty); 1934 } 1935 env->ReleaseStringUTFChars(compDirect, dir); 1936 // -1 for error parsing directive. Return 0 as number of directives added. 1937 if (ret == -1) { 1938 ret = 0; 1939 } 1940 return (jint) ret; 1941 WB_END 1942 1943 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 1944 DirectivesStack::pop(count); 1945 WB_END 1946 1947 // Checks that the library libfile has the noexecstack bit set. 1948 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 1949 jboolean ret = false; 1950 #ifdef LINUX 1951 // Can't be in VM when we call JNI. 1952 ThreadToNativeFromVM ttnfv(thread); 1953 const char* lf = env->GetStringUTFChars(libfile, NULL); 1954 CHECK_JNI_EXCEPTION_(env, 0); 1955 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 1956 env->ReleaseStringUTFChars(libfile, lf); 1957 #endif 1958 return ret; 1959 WB_END 1960 1961 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 1962 LINUX_ONLY(return OSContainer::is_containerized();) 1963 return false; 1964 WB_END 1965 1966 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 1967 os::print_os_info(tty); 1968 WB_END 1969 1970 // Elf decoder 1971 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 1972 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 1973 ElfFile::_do_not_cache_elf_section = true; 1974 #endif 1975 WB_END 1976 1977 WB_ENTRY(jint, WB_ResolvedMethodRemovedCount(JNIEnv* env, jobject o)) 1978 return (jint) ResolvedMethodTable::removed_entries_count(); 1979 WB_END 1980 1981 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o)) 1982 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count(); 1983 WB_END 1984 1985 1986 #define CC (char*) 1987 1988 static JNINativeMethod methods[] = { 1989 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 1990 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 1991 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 1992 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 1993 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 1994 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 1995 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 1996 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 1997 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 1998 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, 1999 {CC"parseCommandLine0", 2000 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 2001 (void*) &WB_ParseCommandLine 2002 }, 2003 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2004 (void*)&WB_AddToBootstrapClassLoaderSearch}, 2005 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2006 (void*)&WB_AddToSystemClassLoaderSearch}, 2007 {CC"getCompressedOopsMaxHeapSize", CC"()J", 2008 (void*)&WB_GetCompressedOopsMaxHeapSize}, 2009 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 2010 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 2011 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 2012 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 2013 #if INCLUDE_CDS 2014 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName}, 2015 #endif 2016 #if INCLUDE_G1GC 2017 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 2018 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 2019 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 2020 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 2021 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 2022 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 2023 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 2024 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 2025 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 2026 (void*)&WB_G1AuxiliaryMemoryUsage }, 2027 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 2028 #endif // INCLUDE_G1GC 2029 #if INCLUDE_PARALLELGC 2030 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 2031 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 2032 #endif 2033 #if INCLUDE_NMT 2034 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 2035 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 2036 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 2037 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 2038 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 2039 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 2040 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 2041 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 2042 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 2043 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 2044 #endif // INCLUDE_NMT 2045 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 2046 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 2047 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 2048 (void*)&WB_DeoptimizeMethod }, 2049 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 2050 (void*)&WB_IsMethodCompiled }, 2051 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 2052 (void*)&WB_IsMethodCompilable}, 2053 {CC"isMethodQueuedForCompilation0", 2054 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 2055 {CC"isIntrinsicAvailable0", 2056 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2057 (void*)&WB_IsIntrinsicAvailable}, 2058 {CC"makeMethodNotCompilable0", 2059 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2060 {CC"testSetDontInlineMethod0", 2061 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2062 {CC"getMethodCompilationLevel0", 2063 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2064 {CC"getMethodEntryBci0", 2065 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2066 {CC"getCompileQueueSize", 2067 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2068 {CC"testSetForceInlineMethod0", 2069 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2070 {CC"enqueueMethodForCompilation0", 2071 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2072 {CC"enqueueInitializerForCompilation0", 2073 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2074 {CC"clearMethodState0", 2075 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2076 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2077 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2078 {CC"matchesMethod", 2079 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2080 (void*)&WB_MatchesMethod}, 2081 {CC"matchesInline", 2082 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2083 (void*)&WB_MatchesInline}, 2084 {CC"shouldPrintAssembly", 2085 CC"(Ljava/lang/reflect/Executable;I)Z", 2086 (void*)&WB_ShouldPrintAssembly}, 2087 2088 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2089 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2090 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2091 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2092 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2093 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2094 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2095 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2096 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2097 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2098 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2099 (void*)&WB_SetStringVMFlag}, 2100 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2101 (void*)&WB_GetBooleanVMFlag}, 2102 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2103 (void*)&WB_GetIntVMFlag}, 2104 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2105 (void*)&WB_GetUintVMFlag}, 2106 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2107 (void*)&WB_GetIntxVMFlag}, 2108 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2109 (void*)&WB_GetUintxVMFlag}, 2110 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2111 (void*)&WB_GetUint64VMFlag}, 2112 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2113 (void*)&WB_GetSizeTVMFlag}, 2114 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2115 (void*)&WB_GetDoubleVMFlag}, 2116 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2117 (void*)&WB_GetStringVMFlag}, 2118 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2119 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2120 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2121 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2122 {CC"allocateMetaspace", 2123 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2124 {CC"freeMetaspace", 2125 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 2126 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2127 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2128 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect }, 2129 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment }, 2130 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2131 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2132 (void*)&WB_GetNMethod }, 2133 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 2134 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2135 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2136 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2137 {CC"getCompilationActivityMode", 2138 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2139 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2140 (void*)&WB_GetMethodData }, 2141 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2142 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2143 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2144 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2145 (void*)&WB_DefineModule }, 2146 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2147 (void*)&WB_AddModuleExports }, 2148 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2149 (void*)&WB_AddReadsModule }, 2150 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2151 (void*)&WB_AddModuleExportsToAllUnnamed }, 2152 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2153 (void*)&WB_AddModuleExportsToAll }, 2154 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls }, 2155 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2156 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2157 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2158 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 2159 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 2160 {CC"remapInstructionOperandFromCPCache0", 2161 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 2162 {CC"encodeConstantPoolIndyIndex0", 2163 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 2164 {CC"getMethodBooleanOption", 2165 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2166 (void*)&WB_GetMethodBooleaneOption}, 2167 {CC"getMethodIntxOption", 2168 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2169 (void*)&WB_GetMethodIntxOption}, 2170 {CC"getMethodUintxOption", 2171 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2172 (void*)&WB_GetMethodUintxOption}, 2173 {CC"getMethodDoubleOption", 2174 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2175 (void*)&WB_GetMethodDoubleOption}, 2176 {CC"getMethodStringOption", 2177 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2178 (void*)&WB_GetMethodStringOption}, 2179 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 2180 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2181 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored }, 2182 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 2183 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2184 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild }, 2185 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild }, 2186 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported }, 2187 2188 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2189 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2190 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2191 (void*)&WB_AddCompilerDirective }, 2192 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2193 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported}, 2194 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected}, 2195 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically}, 2196 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl}, 2197 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;", 2198 (void*)&WB_GetConcurrentGCPhases}, 2199 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z", 2200 (void*)&WB_RequestConcurrentGCPhase}, 2201 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2202 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2203 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2204 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2205 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 2206 {CC"resolvedMethodRemovedCount", CC"()I", (void*)&WB_ResolvedMethodRemovedCount }, 2207 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount }, 2208 }; 2209 2210 2211 #undef CC 2212 2213 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2214 { 2215 if (WhiteBoxAPI) { 2216 // Make sure that wbclass is loaded by the null classloader 2217 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass()); 2218 Handle loader(THREAD, ik->class_loader()); 2219 if (loader.is_null()) { 2220 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2221 WhiteBox::set_used(); 2222 } 2223 } 2224 } 2225 JVM_END