1 /* 2 * Copyright (c) 2012, 2017, 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 "jvmtifiles/jvmtiEnv.hpp" 36 #include "memory/metadataFactory.hpp" 37 #include "memory/metaspaceShared.hpp" 38 #include "memory/iterator.hpp" 39 #include "memory/resourceArea.hpp" 40 #include "memory/universe.hpp" 41 #include "memory/oopFactory.hpp" 42 #include "oops/array.hpp" 43 #include "oops/constantPool.hpp" 44 #include "oops/objArrayKlass.hpp" 45 #include "oops/objArrayOop.inline.hpp" 46 #include "oops/oop.inline.hpp" 47 #include "prims/wbtestmethods/parserTests.hpp" 48 #include "prims/whitebox.hpp" 49 #include "runtime/arguments.hpp" 50 #include "runtime/compilationPolicy.hpp" 51 #include "runtime/deoptimization.hpp" 52 #include "runtime/interfaceSupport.hpp" 53 #include "runtime/javaCalls.hpp" 54 #include "runtime/os.hpp" 55 #include "runtime/sweeper.hpp" 56 #include "runtime/thread.hpp" 57 #include "runtime/vm_version.hpp" 58 #include "utilities/align.hpp" 59 #include "utilities/debug.hpp" 60 #include "utilities/exceptions.hpp" 61 #include "utilities/macros.hpp" 62 #if INCLUDE_ALL_GCS 63 #include "gc/g1/concurrentMarkThread.hpp" 64 #include "gc/g1/g1CollectedHeap.inline.hpp" 65 #include "gc/g1/g1ConcurrentMark.hpp" 66 #include "gc/g1/heapRegionRemSet.hpp" 67 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 68 #include "gc/parallel/adjoiningGenerations.hpp" 69 #endif // INCLUDE_ALL_GCS 70 #if INCLUDE_NMT 71 #include "services/mallocSiteTable.hpp" 72 #include "services/memTracker.hpp" 73 #include "utilities/nativeCallStack.hpp" 74 #endif // INCLUDE_NMT 75 76 #ifdef LINUX 77 #include "utilities/elfFile.hpp" 78 #endif 79 80 81 #define SIZE_T_MAX_VALUE ((size_t) -1) 82 83 bool WhiteBox::_used = false; 84 volatile bool WhiteBox::compilation_locked = false; 85 86 class VM_WhiteBoxOperation : public VM_Operation { 87 public: 88 VM_WhiteBoxOperation() { } 89 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 90 bool allow_nested_vm_operations() const { return true; } 91 }; 92 93 94 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 95 return (jlong)(void*)JNIHandles::resolve(obj); 96 WB_END 97 98 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 99 return heapOopSize; 100 WB_END 101 102 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 103 return os::vm_page_size(); 104 WB_END 105 106 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 107 return os::vm_allocation_granularity(); 108 WB_END 109 110 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 111 return os::large_page_size(); 112 WB_END 113 114 class WBIsKlassAliveClosure : public KlassClosure { 115 Symbol* _name; 116 bool _found; 117 public: 118 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} 119 120 void do_klass(Klass* k) { 121 if (_found) return; 122 Symbol* ksym = k->name(); 123 if (ksym->fast_compare(_name) == 0) { 124 _found = true; 125 } 126 } 127 128 bool found() const { 129 return _found; 130 } 131 }; 132 133 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) 134 oop h_name = JNIHandles::resolve(name); 135 if (h_name == NULL) return false; 136 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false); 137 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 138 139 WBIsKlassAliveClosure closure(sym); 140 ClassLoaderDataGraph::classes_do(&closure); 141 142 return closure.found(); 143 WB_END 144 145 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 146 #if INCLUDE_JVMTI 147 ResourceMark rm; 148 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 149 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 150 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 151 assert(err == JVMTI_ERROR_NONE, "must not fail"); 152 #endif 153 } 154 WB_END 155 156 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 157 #if INCLUDE_JVMTI 158 ResourceMark rm; 159 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 160 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 161 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 162 assert(err == JVMTI_ERROR_NONE, "must not fail"); 163 #endif 164 } 165 WB_END 166 167 168 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 169 return (jlong)Arguments::max_heap_for_compressed_oops(); 170 } 171 WB_END 172 173 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 174 CollectorPolicy * p = Universe::heap()->collector_policy(); 175 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " 176 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 177 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(), 178 p->space_alignment(), p->heap_alignment()); 179 } 180 WB_END 181 182 #ifndef PRODUCT 183 // Forward declaration 184 void TestReservedSpace_test(); 185 void TestReserveMemorySpecial_test(); 186 void TestVirtualSpace_test(); 187 void TestMetaspaceAux_test(); 188 #endif 189 190 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) 191 #ifndef PRODUCT 192 TestReservedSpace_test(); 193 TestReserveMemorySpecial_test(); 194 TestVirtualSpace_test(); 195 TestMetaspaceAux_test(); 196 #endif 197 WB_END 198 199 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 200 size_t granularity = os::vm_allocation_granularity(); 201 ReservedHeapSpace rhs(100 * granularity, granularity, false); 202 VirtualSpace vs; 203 vs.initialize(rhs, 50 * granularity); 204 205 // Check if constraints are complied 206 if (!( UseCompressedOops && rhs.base() != NULL && 207 Universe::narrow_oop_base() != NULL && 208 Universe::narrow_oop_use_implicit_null_checks() )) { 209 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 210 "\tUseCompressedOops is %d\n" 211 "\trhs.base() is " PTR_FORMAT "\n" 212 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n" 213 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d", 214 UseCompressedOops, 215 p2i(rhs.base()), 216 p2i(Universe::narrow_oop_base()), 217 Universe::narrow_oop_use_implicit_null_checks()); 218 return; 219 } 220 tty->print_cr("Reading from no access area... "); 221 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 222 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 223 WB_END 224 225 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 226 size_t magnitude, size_t iterations) { 227 size_t granularity = os::vm_allocation_granularity(); 228 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false); 229 VirtualSpace vs; 230 if (!vs.initialize(rhs, 0)) { 231 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 232 return 3; 233 } 234 235 int seed = os::random(); 236 tty->print_cr("Random seed is %d", seed); 237 os::init_random(seed); 238 239 for (size_t i = 0; i < iterations; i++) { 240 241 // Whether we will shrink or grow 242 bool shrink = os::random() % 2L == 0; 243 244 // Get random delta to resize virtual space 245 size_t delta = (size_t)os::random() % magnitude; 246 247 // If we are about to shrink virtual space below zero, then expand instead 248 if (shrink && vs.committed_size() < delta) { 249 shrink = false; 250 } 251 252 // Resizing by delta 253 if (shrink) { 254 vs.shrink_by(delta); 255 } else { 256 // If expanding fails expand_by will silently return false 257 vs.expand_by(delta, true); 258 } 259 } 260 return 0; 261 } 262 263 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 264 jlong reserved_space_size, jlong magnitude, jlong iterations)) 265 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 266 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 267 iterations); 268 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 269 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 270 return 1; 271 } 272 273 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 274 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 275 if (sizeof(size_t) < sizeof(jlong)) { 276 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; 277 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 278 || iterations > size_t_max_value) { 279 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 280 return 2; 281 } 282 } 283 284 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 285 (size_t) magnitude, (size_t) iterations); 286 WB_END 287 288 static const jint serial_code = 1; 289 static const jint parallel_code = 2; 290 static const jint cms_code = 4; 291 static const jint g1_code = 8; 292 293 WB_ENTRY(jint, WB_CurrentGC(JNIEnv* env, jobject o, jobject obj)) 294 if (UseSerialGC) { 295 return serial_code; 296 } else if (UseParallelGC || UseParallelOldGC) { 297 return parallel_code; 298 } if (UseConcMarkSweepGC) { 299 return cms_code; 300 } else if (UseG1GC) { 301 return g1_code; 302 } 303 ShouldNotReachHere(); 304 return 0; 305 WB_END 306 307 WB_ENTRY(jint, WB_AllSupportedGC(JNIEnv* env, jobject o, jobject obj)) 308 #if INCLUDE_ALL_GCS 309 return serial_code | parallel_code | cms_code | g1_code; 310 #else 311 return serial_code; 312 #endif // INCLUDE_ALL_GCS 313 WB_END 314 315 WB_ENTRY(jboolean, WB_GCSelectedByErgo(JNIEnv* env, jobject o, jobject obj)) 316 if (UseSerialGC) { 317 return FLAG_IS_ERGO(UseSerialGC); 318 } else if (UseParallelGC) { 319 return FLAG_IS_ERGO(UseParallelGC); 320 } else if (UseParallelOldGC) { 321 return FLAG_IS_ERGO(UseParallelOldGC); 322 } else if (UseConcMarkSweepGC) { 323 return FLAG_IS_ERGO(UseConcMarkSweepGC); 324 } else if (UseG1GC) { 325 return FLAG_IS_ERGO(UseG1GC); 326 } 327 ShouldNotReachHere(); 328 return false; 329 WB_END 330 331 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 332 oop p = JNIHandles::resolve(obj); 333 #if INCLUDE_ALL_GCS 334 if (UseG1GC) { 335 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 336 const HeapRegion* hr = g1->heap_region_containing(p); 337 if (hr == NULL) { 338 return false; 339 } 340 return !(hr->is_young()); 341 } else if (UseParallelGC) { 342 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 343 return !psh->is_in_young(p); 344 } 345 #endif // INCLUDE_ALL_GCS 346 GenCollectedHeap* gch = GenCollectedHeap::heap(); 347 return !gch->is_in_young(p); 348 WB_END 349 350 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 351 oop p = JNIHandles::resolve(obj); 352 return p->size() * HeapWordSize; 353 WB_END 354 355 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 356 size_t alignment = Universe::heap()->collector_policy()->space_alignment(); 357 return (jlong)alignment; 358 WB_END 359 360 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 361 size_t alignment = Universe::heap()->collector_policy()->heap_alignment(); 362 return (jlong)alignment; 363 WB_END 364 365 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o)) 366 return Universe::heap()->supports_concurrent_phase_control(); 367 WB_END 368 369 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o)) 370 const char* const* phases = Universe::heap()->concurrent_phases(); 371 jint nphases = 0; 372 for ( ; phases[nphases] != NULL; ++nphases) ; 373 374 ResourceMark rm(thread); 375 ThreadToNativeFromVM ttn(thread); 376 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 377 CHECK_JNI_EXCEPTION_(env, NULL); 378 379 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL); 380 CHECK_JNI_EXCEPTION_(env, NULL); 381 382 // If push fails, return with pending exception. 383 if (env->PushLocalFrame(nphases) < 0) return NULL; 384 for (jint i = 0; i < nphases; ++i) { 385 jstring phase = env->NewStringUTF(phases[i]); 386 CHECK_JNI_EXCEPTION_(env, NULL); 387 env->SetObjectArrayElement(result, i, phase); 388 CHECK_JNI_EXCEPTION_(env, NULL); 389 } 390 env->PopLocalFrame(NULL); 391 392 return result; 393 WB_END 394 395 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name)) 396 Handle h_name(THREAD, JNIHandles::resolve(name)); 397 ResourceMark rm; 398 const char* c_name = java_lang_String::as_utf8_string(h_name()); 399 return Universe::heap()->request_concurrent_phase(c_name); 400 WB_END 401 402 #if INCLUDE_ALL_GCS 403 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 404 if (UseG1GC) { 405 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 406 oop result = JNIHandles::resolve(obj); 407 const HeapRegion* hr = g1->heap_region_containing(result); 408 return hr->is_humongous(); 409 } 410 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 411 WB_END 412 413 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 414 if (UseG1GC) { 415 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 416 const HeapRegion* hr = g1->heap_region_containing((void*) addr); 417 return hr->is_humongous(); 418 } 419 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 420 WB_END 421 422 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 423 if (UseG1GC) { 424 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 425 const HeapRegion* hr = g1->heap_region_containing((void*) addr); 426 return hr->is_free(); 427 } 428 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 429 WB_END 430 431 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 432 if (UseG1GC) { 433 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 434 size_t nr = g1->max_regions(); 435 return (jlong)nr; 436 } 437 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 438 WB_END 439 440 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 441 if (UseG1GC) { 442 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 443 size_t nr = g1->num_free_regions(); 444 return (jlong)nr; 445 } 446 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 447 WB_END 448 449 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 450 if (UseG1GC) { 451 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 452 return g1h->concurrent_mark()->cmThread()->during_cycle(); 453 } 454 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 455 WB_END 456 457 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o)) 458 if (UseG1GC) { 459 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 460 if (!g1h->concurrent_mark()->cmThread()->during_cycle()) { 461 g1h->collect(GCCause::_wb_conc_mark); 462 return true; 463 } 464 return false; 465 } 466 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled"); 467 WB_END 468 469 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 470 if (UseG1GC) { 471 return (jint)HeapRegion::GrainBytes; 472 } 473 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 474 WB_END 475 476 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 477 #if INCLUDE_ALL_GCS 478 if (UseParallelGC) { 479 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment(); 480 } 481 #endif // INCLUDE_ALL_GCS 482 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 483 WB_END 484 485 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 486 #if INCLUDE_ALL_GCS 487 if (UseParallelGC) { 488 return ParallelScavengeHeap::heap()->generation_alignment(); 489 } 490 #endif // INCLUDE_ALL_GCS 491 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 492 WB_END 493 494 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 495 #if INCLUDE_ALL_GCS 496 if (UseG1GC) { 497 ResourceMark rm(THREAD); 498 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 499 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 500 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 501 return JNIHandles::make_local(env, h()); 502 } 503 #endif // INCLUDE_ALL_GCS 504 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 505 WB_END 506 507 class OldRegionsLivenessClosure: public HeapRegionClosure { 508 509 private: 510 const int _liveness; 511 size_t _total_count; 512 size_t _total_memory; 513 size_t _total_memory_to_free; 514 515 public: 516 OldRegionsLivenessClosure(int liveness) : 517 _liveness(liveness), 518 _total_count(0), 519 _total_memory(0), 520 _total_memory_to_free(0) { } 521 522 size_t total_count() { return _total_count; } 523 size_t total_memory() { return _total_memory; } 524 size_t total_memory_to_free() { return _total_memory_to_free; } 525 526 bool doHeapRegion(HeapRegion* r) { 527 if (r->is_old()) { 528 size_t prev_live = r->marked_bytes(); 529 size_t live = r->live_bytes(); 530 size_t size = r->used(); 531 size_t reg_size = HeapRegion::GrainBytes; 532 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 533 _total_memory += size; 534 ++_total_count; 535 if (size == reg_size) { 536 // we don't include non-full regions since they are unlikely included in mixed gc 537 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 538 _total_memory_to_free += size - prev_live; 539 } 540 } 541 } 542 return false; 543 } 544 }; 545 546 547 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 548 if (!UseG1GC) { 549 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 550 } 551 if (liveness < 0) { 552 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 553 } 554 555 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 556 OldRegionsLivenessClosure rli(liveness); 557 g1h->heap_region_iterate(&rli); 558 559 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 560 result->long_at_put(0, rli.total_count()); 561 result->long_at_put(1, rli.total_memory()); 562 result->long_at_put(2, rli.total_memory_to_free()); 563 return (jlongArray) JNIHandles::make_local(env, result); 564 WB_END 565 566 #endif // INCLUDE_ALL_GCS 567 568 #if INCLUDE_NMT 569 // Alloc memory using the test memory type so that we can use that to see if 570 // NMT picks it up correctly 571 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 572 jlong addr = 0; 573 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 574 return addr; 575 WB_END 576 577 // Alloc memory with pseudo call stack. The test can create psudo malloc 578 // allocation site to stress the malloc tracking. 579 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 580 address pc = (address)(size_t)pseudo_stack; 581 NativeCallStack stack(&pc, 1); 582 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 583 WB_END 584 585 // Free the memory allocated by NMTAllocTest 586 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 587 os::free((void*)(uintptr_t)mem); 588 WB_END 589 590 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 591 jlong addr = 0; 592 593 addr = (jlong)(uintptr_t)os::reserve_memory(size); 594 MemTracker::record_virtual_memory_type((address)addr, mtTest); 595 596 return addr; 597 WB_END 598 599 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 600 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 601 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 602 WB_END 603 604 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 605 os::uncommit_memory((char *)(uintptr_t)addr, size); 606 WB_END 607 608 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 609 os::release_memory((char *)(uintptr_t)addr, size); 610 WB_END 611 612 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env)) 613 // Test that we can downgrade NMT levels but not upgrade them. 614 if (MemTracker::tracking_level() == NMT_off) { 615 MemTracker::transition_to(NMT_off); 616 return MemTracker::tracking_level() == NMT_off; 617 } else { 618 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking"); 619 MemTracker::transition_to(NMT_summary); 620 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now"); 621 622 // Can't go to detail once NMT is set to summary. 623 MemTracker::transition_to(NMT_detail); 624 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now"); 625 626 // Shutdown sets tracking level to minimal. 627 MemTracker::shutdown(); 628 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); 629 630 // Once the tracking level is minimal, we cannot increase to summary. 631 // The code ignores this request instead of asserting because if the malloc site 632 // table overflows in another thread, it tries to change the code to summary. 633 MemTracker::transition_to(NMT_summary); 634 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 635 636 // Really can never go up to detail, verify that the code would never do this. 637 MemTracker::transition_to(NMT_detail); 638 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 639 return MemTracker::tracking_level() == NMT_minimal; 640 } 641 WB_END 642 643 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 644 int hash_size = MallocSiteTable::hash_buckets(); 645 assert(hash_size > 0, "NMT hash_size should be > 0"); 646 return (jint)hash_size; 647 WB_END 648 #endif // INCLUDE_NMT 649 650 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 651 assert(method != NULL, "method should not be null"); 652 ThreadToNativeFromVM ttn(thread); 653 return env->FromReflectedMethod(method); 654 } 655 656 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 657 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 658 private: 659 int _result; 660 const bool _make_not_entrant; 661 public: 662 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 663 _result(0), _make_not_entrant(make_not_entrant) { } 664 int result() const { return _result; } 665 666 void doit() { 667 for (JavaThread* t = Threads::first(); t != NULL; t = t->next()) { 668 if (t->has_last_Java_frame()) { 669 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) { 670 frame* f = fst.current(); 671 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 672 RegisterMap* reg_map = fst.register_map(); 673 Deoptimization::deoptimize(t, *f, reg_map); 674 if (_make_not_entrant) { 675 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 676 assert(cm != NULL, "sanity check"); 677 cm->make_not_entrant(); 678 } 679 ++_result; 680 } 681 } 682 } 683 } 684 } 685 }; 686 687 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 688 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 689 VMThread::execute(&op); 690 return op.result(); 691 WB_END 692 693 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 694 MutexLockerEx mu(Compile_lock); 695 CodeCache::mark_all_nmethods_for_deoptimization(); 696 VM_Deoptimize op; 697 VMThread::execute(&op); 698 WB_END 699 700 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 701 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 702 int result = 0; 703 CHECK_JNI_EXCEPTION_(env, result); 704 MutexLockerEx mu(Compile_lock); 705 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 706 if (is_osr) { 707 result += mh->mark_osr_nmethods(); 708 } else if (mh->code() != NULL) { 709 mh->code()->mark_for_deoptimization(); 710 ++result; 711 } 712 result += CodeCache::mark_for_deoptimization(mh()); 713 if (result > 0) { 714 VM_Deoptimize op; 715 VMThread::execute(&op); 716 } 717 return result; 718 WB_END 719 720 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 721 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 722 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 723 MutexLockerEx mu(Compile_lock); 724 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 725 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 726 if (code == NULL) { 727 return JNI_FALSE; 728 } 729 return (code->is_alive() && !code->is_marked_for_deoptimization()); 730 WB_END 731 732 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 733 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 734 return false; 735 } 736 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 737 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 738 MutexLockerEx mu(Compile_lock); 739 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 740 if (is_osr) { 741 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); 742 } else { 743 return CompilationPolicy::can_be_compiled(mh, comp_level); 744 } 745 WB_END 746 747 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 748 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 749 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 750 MutexLockerEx mu(Compile_lock); 751 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 752 return mh->queued_for_compilation(); 753 WB_END 754 755 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 756 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 757 return false; // Intrinsic is not available on a non-existent compilation level. 758 } 759 jmethodID method_id, compilation_context_id; 760 method_id = reflected_method_to_jmid(thread, env, method); 761 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 762 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 763 764 DirectiveSet* directive; 765 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 766 assert(comp != NULL, "compiler not available"); 767 if (compilation_context != NULL) { 768 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 769 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 770 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 771 directive = DirectivesStack::getMatchingDirective(cch, comp); 772 } else { 773 // Calling with NULL matches default directive 774 directive = DirectivesStack::getDefaultDirective(comp); 775 } 776 bool result = comp->is_intrinsic_available(mh, directive); 777 DirectivesStack::release(directive); 778 return result; 779 WB_END 780 781 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 782 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 783 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 784 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 785 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 786 return (code != NULL ? code->comp_level() : CompLevel_none); 787 WB_END 788 789 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 790 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 791 CHECK_JNI_EXCEPTION(env); 792 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 793 if (is_osr) { 794 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox"); 795 } else { 796 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); 797 } 798 WB_END 799 800 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 801 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 802 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 803 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 804 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 805 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 806 WB_END 807 808 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 809 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 810 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 811 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 812 bool result = mh->dont_inline(); 813 mh->set_dont_inline(value == JNI_TRUE); 814 return result; 815 WB_END 816 817 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 818 if (comp_level == CompLevel_any) { 819 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 820 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 821 } else { 822 return CompileBroker::queue_size(comp_level); 823 } 824 WB_END 825 826 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 827 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 828 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 829 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 830 bool result = mh->force_inline(); 831 mh->set_force_inline(value == JNI_TRUE); 832 return result; 833 WB_END 834 835 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) { 836 // Screen for unavailable/bad comp level or null method 837 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) || 838 CompileBroker::compiler(comp_level) == NULL) { 839 return false; 840 } 841 methodHandle mh(THREAD, method); 842 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD); 843 MutexLockerEx mu(Compile_lock); 844 return (mh->queued_for_compilation() || nm != NULL); 845 } 846 847 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 848 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 849 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 850 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 851 WB_END 852 853 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 854 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 855 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD); 856 WB_END 857 858 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 859 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 860 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 861 862 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 863 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 864 bool result = directive->PrintAssemblyOption; 865 DirectivesStack::release(directive); 866 867 return result; 868 WB_END 869 870 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 871 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 872 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 873 874 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 875 876 ResourceMark rm; 877 const char* error_msg = NULL; 878 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 879 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 880 881 if (m == NULL) { 882 assert(error_msg != NULL, "Always have an error message"); 883 tty->print_cr("Got error: %s", error_msg); 884 return -1; // Pattern failed 885 } 886 887 // Pattern works - now check if it matches 888 int result; 889 if (m->match(mh, InlineMatcher::force_inline)) { 890 result = 2; // Force inline match 891 } else if (m->match(mh, InlineMatcher::dont_inline)) { 892 result = 1; // Dont inline match 893 } else { 894 result = 0; // No match 895 } 896 delete m; 897 return result; 898 WB_END 899 900 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 901 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 902 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 903 904 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 905 906 ResourceMark rm; 907 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 908 909 const char* error_msg = NULL; 910 911 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg); 912 if (m == NULL) { 913 assert(error_msg != NULL, "Must have error_msg"); 914 tty->print_cr("Got error: %s", error_msg); 915 return -1; 916 } 917 918 // Pattern works - now check if it matches 919 int result = m->matches(mh); 920 delete m; 921 assert(result == 0 || result == 1, "Result out of range"); 922 return result; 923 WB_END 924 925 static AlwaysFalseClosure always_false; 926 927 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 928 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 929 CHECK_JNI_EXCEPTION(env); 930 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 931 MutexLockerEx mu(Compile_lock); 932 MethodData* mdo = mh->method_data(); 933 MethodCounters* mcs = mh->method_counters(); 934 935 if (mdo != NULL) { 936 mdo->init(); 937 ResourceMark rm; 938 int arg_count = mdo->method()->size_of_parameters(); 939 for (int i = 0; i < arg_count; i++) { 940 mdo->set_arg_modified(i, 0); 941 } 942 MutexLockerEx mu(mdo->extra_data_lock()); 943 mdo->clean_method_data(&always_false); 944 } 945 946 mh->clear_not_c1_compilable(); 947 mh->clear_not_c2_compilable(); 948 mh->clear_not_c2_osr_compilable(); 949 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 950 if (mcs != NULL) { 951 mcs->backedge_counter()->init(); 952 mcs->invocation_counter()->init(); 953 mcs->set_interpreter_invocation_count(0); 954 mcs->set_interpreter_throwout_count(0); 955 956 #ifdef TIERED 957 mcs->set_rate(0.0F); 958 mh->set_prev_event_count(0); 959 mh->set_prev_time(0); 960 #endif 961 } 962 WB_END 963 964 template <typename T> 965 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) { 966 if (name == NULL) { 967 return false; 968 } 969 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 970 const char* flag_name = env->GetStringUTFChars(name, NULL); 971 CHECK_JNI_EXCEPTION_(env, false); 972 Flag::Error result = (*TAt)(flag_name, value, true, true); 973 env->ReleaseStringUTFChars(name, flag_name); 974 return (result == Flag::SUCCESS); 975 } 976 977 template <typename T> 978 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) { 979 if (name == NULL) { 980 return false; 981 } 982 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 983 const char* flag_name = env->GetStringUTFChars(name, NULL); 984 CHECK_JNI_EXCEPTION_(env, false); 985 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL); 986 env->ReleaseStringUTFChars(name, flag_name); 987 return (result == Flag::SUCCESS); 988 } 989 990 template <typename T> 991 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 992 ResourceMark rm(thread); 993 jclass clazz = env->FindClass(name->as_C_string()); 994 CHECK_JNI_EXCEPTION_(env, NULL); 995 jmethodID methodID = env->GetStaticMethodID(clazz, 996 vmSymbols::valueOf_name()->as_C_string(), 997 sig->as_C_string()); 998 CHECK_JNI_EXCEPTION_(env, NULL); 999 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1000 CHECK_JNI_EXCEPTION_(env, NULL); 1001 return result; 1002 } 1003 1004 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1005 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1006 } 1007 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1008 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1009 } 1010 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1011 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1012 } 1013 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1014 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1015 }*/ 1016 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1017 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1018 } 1019 1020 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1021 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1022 const char* flag_name = env->GetStringUTFChars(name, NULL); 1023 CHECK_JNI_EXCEPTION_(env, NULL); 1024 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true); 1025 env->ReleaseStringUTFChars(name, flag_name); 1026 return result; 1027 } 1028 1029 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1030 Flag* flag = getVMFlag(thread, env, name); 1031 return (flag != NULL) && flag->is_constant_in_binary(); 1032 WB_END 1033 1034 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1035 Flag* flag = getVMFlag(thread, env, name); 1036 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 1037 WB_END 1038 1039 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1040 bool result; 1041 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) { 1042 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1043 return booleanBox(thread, env, result); 1044 } 1045 return NULL; 1046 WB_END 1047 1048 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1049 int result; 1050 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) { 1051 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1052 return longBox(thread, env, result); 1053 } 1054 return NULL; 1055 WB_END 1056 1057 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1058 uint result; 1059 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) { 1060 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1061 return longBox(thread, env, result); 1062 } 1063 return NULL; 1064 WB_END 1065 1066 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1067 intx result; 1068 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) { 1069 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1070 return longBox(thread, env, result); 1071 } 1072 return NULL; 1073 WB_END 1074 1075 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1076 uintx result; 1077 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) { 1078 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1079 return longBox(thread, env, result); 1080 } 1081 return NULL; 1082 WB_END 1083 1084 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1085 uint64_t result; 1086 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) { 1087 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1088 return longBox(thread, env, result); 1089 } 1090 return NULL; 1091 WB_END 1092 1093 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1094 uintx result; 1095 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) { 1096 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1097 return longBox(thread, env, result); 1098 } 1099 return NULL; 1100 WB_END 1101 1102 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1103 double result; 1104 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) { 1105 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1106 return doubleBox(thread, env, result); 1107 } 1108 return NULL; 1109 WB_END 1110 1111 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1112 ccstr ccstrResult; 1113 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) { 1114 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1115 jstring result = env->NewStringUTF(ccstrResult); 1116 CHECK_JNI_EXCEPTION_(env, NULL); 1117 return result; 1118 } 1119 return NULL; 1120 WB_END 1121 1122 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1123 bool result = value == JNI_TRUE ? true : false; 1124 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut); 1125 WB_END 1126 1127 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1128 int result = value; 1129 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut); 1130 WB_END 1131 1132 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1133 uint result = value; 1134 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut); 1135 WB_END 1136 1137 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1138 intx result = value; 1139 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut); 1140 WB_END 1141 1142 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1143 uintx result = value; 1144 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut); 1145 WB_END 1146 1147 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1148 uint64_t result = value; 1149 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut); 1150 WB_END 1151 1152 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1153 size_t result = value; 1154 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut); 1155 WB_END 1156 1157 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1158 double result = value; 1159 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut); 1160 WB_END 1161 1162 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1163 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1164 const char* ccstrValue; 1165 if (value == NULL) { 1166 ccstrValue = NULL; 1167 } 1168 else { 1169 ccstrValue = env->GetStringUTFChars(value, NULL); 1170 CHECK_JNI_EXCEPTION(env); 1171 } 1172 ccstr ccstrResult = ccstrValue; 1173 bool needFree; 1174 { 1175 ThreadInVMfromNative ttvfn(thread); // back to VM 1176 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut); 1177 } 1178 if (value != NULL) { 1179 env->ReleaseStringUTFChars(value, ccstrValue); 1180 } 1181 if (needFree) { 1182 FREE_C_HEAP_ARRAY(char, ccstrResult); 1183 } 1184 WB_END 1185 1186 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1187 WhiteBox::compilation_locked = true; 1188 WB_END 1189 1190 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1191 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1192 WhiteBox::compilation_locked = false; 1193 mo.notify_all(); 1194 WB_END 1195 1196 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 1197 // Force a code cache sweep and block until it finished 1198 NMethodSweeper::force_sweep(); 1199 WB_END 1200 1201 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1202 ResourceMark rm(THREAD); 1203 int len; 1204 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1205 return (StringTable::lookup(name, len) != NULL); 1206 WB_END 1207 1208 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1209 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true); 1210 Universe::heap()->collect(GCCause::_wb_full_gc); 1211 #if INCLUDE_ALL_GCS 1212 if (UseG1GC) { 1213 // Needs to be cleared explicitly for G1 1214 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false); 1215 } 1216 #endif // INCLUDE_ALL_GCS 1217 WB_END 1218 1219 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1220 Universe::heap()->collect(GCCause::_wb_young_gc); 1221 WB_END 1222 1223 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1224 // static+volatile in order to force the read to happen 1225 // (not be eliminated by the compiler) 1226 static char c; 1227 static volatile char* p; 1228 1229 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 1230 if (p == NULL) { 1231 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1232 } 1233 1234 c = *p; 1235 WB_END 1236 1237 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1238 const char* features = VM_Version::features_string(); 1239 ThreadToNativeFromVM ttn(thread); 1240 jstring features_string = env->NewStringUTF(features); 1241 1242 CHECK_JNI_EXCEPTION_(env, NULL); 1243 1244 return features_string; 1245 WB_END 1246 1247 int WhiteBox::get_blob_type(const CodeBlob* code) { 1248 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1249 if (code->is_aot()) { 1250 return -1; 1251 } 1252 return CodeCache::get_code_heap(code)->code_blob_type(); 1253 } 1254 1255 CodeHeap* WhiteBox::get_code_heap(int blob_type) { 1256 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1257 return CodeCache::get_code_heap(blob_type); 1258 } 1259 1260 struct CodeBlobStub { 1261 CodeBlobStub(const CodeBlob* blob) : 1262 name(os::strdup(blob->name())), 1263 size(blob->size()), 1264 blob_type(WhiteBox::get_blob_type(blob)), 1265 address((jlong) blob) { } 1266 ~CodeBlobStub() { os::free((void*) name); } 1267 const char* const name; 1268 const jint size; 1269 const jint blob_type; 1270 const jlong address; 1271 }; 1272 1273 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1274 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1275 CHECK_JNI_EXCEPTION_(env, NULL); 1276 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1277 1278 jstring name = env->NewStringUTF(cb->name); 1279 CHECK_JNI_EXCEPTION_(env, NULL); 1280 env->SetObjectArrayElement(result, 0, name); 1281 1282 jobject obj = integerBox(thread, env, cb->size); 1283 CHECK_JNI_EXCEPTION_(env, NULL); 1284 env->SetObjectArrayElement(result, 1, obj); 1285 1286 obj = integerBox(thread, env, cb->blob_type); 1287 CHECK_JNI_EXCEPTION_(env, NULL); 1288 env->SetObjectArrayElement(result, 2, obj); 1289 1290 obj = longBox(thread, env, cb->address); 1291 CHECK_JNI_EXCEPTION_(env, NULL); 1292 env->SetObjectArrayElement(result, 3, obj); 1293 1294 return result; 1295 } 1296 1297 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1298 ResourceMark rm(THREAD); 1299 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1300 CHECK_JNI_EXCEPTION_(env, NULL); 1301 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1302 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1303 jobjectArray result = NULL; 1304 if (code == NULL) { 1305 return result; 1306 } 1307 int comp_level = code->comp_level(); 1308 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size(); 1309 1310 ThreadToNativeFromVM ttn(thread); 1311 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1312 CHECK_JNI_EXCEPTION_(env, NULL); 1313 result = env->NewObjectArray(5, clazz, NULL); 1314 if (result == NULL) { 1315 return result; 1316 } 1317 1318 CodeBlobStub stub(code); 1319 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1320 CHECK_JNI_EXCEPTION_(env, NULL); 1321 env->SetObjectArrayElement(result, 0, codeBlob); 1322 1323 jobject level = integerBox(thread, env, comp_level); 1324 CHECK_JNI_EXCEPTION_(env, NULL); 1325 env->SetObjectArrayElement(result, 1, level); 1326 1327 jbyteArray insts = env->NewByteArray(insts_size); 1328 CHECK_JNI_EXCEPTION_(env, NULL); 1329 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1330 env->SetObjectArrayElement(result, 2, insts); 1331 1332 jobject id = integerBox(thread, env, code->compile_id()); 1333 CHECK_JNI_EXCEPTION_(env, NULL); 1334 env->SetObjectArrayElement(result, 3, id); 1335 1336 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1337 CHECK_JNI_EXCEPTION_(env, NULL); 1338 env->SetObjectArrayElement(result, 4, entry_point); 1339 1340 return result; 1341 WB_END 1342 1343 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1344 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1345 BufferBlob* blob; 1346 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1347 if (full_size < size) { 1348 full_size += align_up(size - full_size, oopSize); 1349 } 1350 { 1351 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1352 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1353 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1354 } 1355 // Track memory usage statistic after releasing CodeCache_lock 1356 MemoryService::track_code_cache_memory_usage(); 1357 return blob; 1358 } 1359 1360 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1361 if (size < 0) { 1362 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1363 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1364 } 1365 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1366 WB_END 1367 1368 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1369 if (addr == 0) { 1370 return; 1371 } 1372 BufferBlob::free((BufferBlob*) addr); 1373 WB_END 1374 1375 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1376 ResourceMark rm; 1377 GrowableArray<CodeBlobStub*> blobs; 1378 { 1379 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1380 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1381 if (heap == NULL) { 1382 return NULL; 1383 } 1384 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1385 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1386 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1387 new (stub) CodeBlobStub(cb); 1388 blobs.append(stub); 1389 } 1390 } 1391 if (blobs.length() == 0) { 1392 return NULL; 1393 } 1394 ThreadToNativeFromVM ttn(thread); 1395 jobjectArray result = NULL; 1396 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1397 CHECK_JNI_EXCEPTION_(env, NULL); 1398 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1399 CHECK_JNI_EXCEPTION_(env, NULL); 1400 if (result == NULL) { 1401 return result; 1402 } 1403 int i = 0; 1404 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1405 it != blobs.end(); ++it) { 1406 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1407 CHECK_JNI_EXCEPTION_(env, NULL); 1408 env->SetObjectArrayElement(result, i, obj); 1409 CHECK_JNI_EXCEPTION_(env, NULL); 1410 ++i; 1411 } 1412 return result; 1413 WB_END 1414 1415 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1416 return CompileBroker::get_compilation_activity_mode(); 1417 WB_END 1418 1419 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1420 if (addr == 0) { 1421 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1422 "WB_GetCodeBlob: addr is null"); 1423 } 1424 ThreadToNativeFromVM ttn(thread); 1425 CodeBlobStub stub((CodeBlob*) addr); 1426 return codeBlob2objectArray(thread, env, &stub); 1427 WB_END 1428 1429 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1430 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1431 CHECK_JNI_EXCEPTION_(env, 0); 1432 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1433 return (jlong) mh->method_data(); 1434 WB_END 1435 1436 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1437 return (jlong) Thread::current()->stack_size(); 1438 WB_END 1439 1440 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1441 JavaThread* t = JavaThread::current(); 1442 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size(); 1443 WB_END 1444 1445 1446 int WhiteBox::array_bytes_to_length(size_t bytes) { 1447 return Array<u1>::bytes_to_length(bytes); 1448 } 1449 1450 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1451 if (size < 0) { 1452 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1453 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1454 } 1455 1456 oop class_loader_oop = JNIHandles::resolve(class_loader); 1457 ClassLoaderData* cld = class_loader_oop != NULL 1458 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1459 : ClassLoaderData::the_null_class_loader_data(); 1460 1461 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1462 1463 return (jlong)(uintptr_t)metadata; 1464 WB_END 1465 1466 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 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 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 1473 WB_END 1474 1475 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1476 jstring version, jstring location, jobjectArray packages)) 1477 ResourceMark rm(THREAD); 1478 1479 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages)); 1480 objArrayHandle packages_h(THREAD, packages_oop); 1481 int num_packages = (packages_h == NULL ? 0 : packages_h->length()); 1482 1483 char** pkgs = NULL; 1484 if (num_packages > 0) { 1485 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages); 1486 for (int x = 0; x < num_packages; x++) { 1487 oop pkg_str = packages_h->obj_at(x); 1488 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) { 1489 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 1490 err_msg("Bad package name")); 1491 } 1492 pkgs[x] = java_lang_String::as_utf8_string(pkg_str); 1493 } 1494 } 1495 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK); 1496 WB_END 1497 1498 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1499 ResourceMark rm(THREAD); 1500 char* package_name = NULL; 1501 if (package != NULL) { 1502 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1503 } 1504 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK); 1505 WB_END 1506 1507 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1508 ResourceMark rm(THREAD); 1509 char* package_name = NULL; 1510 if (package != NULL) { 1511 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1512 } 1513 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK); 1514 WB_END 1515 1516 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1517 ResourceMark rm(THREAD); 1518 char* package_name = NULL; 1519 if (package != NULL) { 1520 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1521 } 1522 Modules::add_module_exports(module, package_name, NULL, CHECK); 1523 WB_END 1524 1525 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1526 Modules::add_reads_module(from_module, source_module, CHECK); 1527 WB_END 1528 1529 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1530 if (inc < 0) { 1531 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1532 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1533 } 1534 1535 jlong max_size_t = (jlong) ((size_t) -1); 1536 if (inc > max_size_t) { 1537 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1538 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1539 } 1540 1541 size_t new_cap_until_GC = 0; 1542 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1543 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1544 if (!success) { 1545 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1546 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1547 "due to contention with another thread"); 1548 } 1549 return (jlong) new_cap_until_GC; 1550 WB_END 1551 1552 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1553 return (jlong) MetaspaceGC::capacity_until_GC(); 1554 WB_END 1555 1556 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb)) 1557 return MetaspaceGC::should_concurrent_collect(); 1558 WB_END 1559 1560 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb)) 1561 return (jlong)Metaspace::reserve_alignment(); 1562 WB_END 1563 1564 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue)) 1565 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ? 1566 Monitor::_safepoint_check_always : 1567 Monitor::_safepoint_check_never; 1568 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required), 1569 attemptedNoSafepointValue == JNI_TRUE); 1570 WB_END 1571 1572 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1573 oop obj_oop = JNIHandles::resolve(obj); 1574 return (jboolean) obj_oop->mark()->has_monitor(); 1575 WB_END 1576 1577 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1578 VM_ForceSafepoint force_safepoint_op; 1579 VMThread::execute(&force_safepoint_op); 1580 WB_END 1581 1582 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1583 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1584 return (jlong) ik->constants(); 1585 WB_END 1586 1587 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1588 return ConstantPool::CPCACHE_INDEX_TAG; 1589 WB_END 1590 1591 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1592 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1593 ConstantPool* cp = ik->constants(); 1594 if (cp->cache() == NULL) { 1595 return -1; 1596 } 1597 return cp->cache()->length(); 1598 WB_END 1599 1600 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1601 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1602 ConstantPool* cp = ik->constants(); 1603 if (cp->cache() == NULL) { 1604 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1605 } 1606 jint cpci = index; 1607 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1608 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1609 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1610 } 1611 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1612 return cpi; 1613 WB_END 1614 1615 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1616 return ConstantPool::encode_invokedynamic_index(index); 1617 WB_END 1618 1619 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1620 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1621 VMThread::execute(&clear_ics); 1622 WB_END 1623 1624 template <typename T> 1625 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1626 assert(value != NULL, "sanity"); 1627 if (method == NULL || name == NULL) { 1628 return false; 1629 } 1630 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1631 CHECK_JNI_EXCEPTION_(env, false); 1632 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1633 // can't be in VM when we call JNI 1634 ThreadToNativeFromVM ttnfv(thread); 1635 const char* flag_name = env->GetStringUTFChars(name, NULL); 1636 CHECK_JNI_EXCEPTION_(env, false); 1637 bool result = CompilerOracle::has_option_value(mh, flag_name, *value); 1638 env->ReleaseStringUTFChars(name, flag_name); 1639 return result; 1640 } 1641 1642 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1643 bool result; 1644 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1645 // can't be in VM when we call JNI 1646 ThreadToNativeFromVM ttnfv(thread); 1647 return booleanBox(thread, env, result); 1648 } 1649 return NULL; 1650 WB_END 1651 1652 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1653 intx result; 1654 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1655 // can't be in VM when we call JNI 1656 ThreadToNativeFromVM ttnfv(thread); 1657 return longBox(thread, env, result); 1658 } 1659 return NULL; 1660 WB_END 1661 1662 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1663 uintx result; 1664 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1665 // can't be in VM when we call JNI 1666 ThreadToNativeFromVM ttnfv(thread); 1667 return longBox(thread, env, result); 1668 } 1669 return NULL; 1670 WB_END 1671 1672 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1673 double result; 1674 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1675 // can't be in VM when we call JNI 1676 ThreadToNativeFromVM ttnfv(thread); 1677 return doubleBox(thread, env, result); 1678 } 1679 return NULL; 1680 WB_END 1681 1682 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1683 ccstr ccstrResult; 1684 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 1685 // can't be in VM when we call JNI 1686 ThreadToNativeFromVM ttnfv(thread); 1687 jstring result = env->NewStringUTF(ccstrResult); 1688 CHECK_JNI_EXCEPTION_(env, NULL); 1689 return result; 1690 } 1691 return NULL; 1692 WB_END 1693 1694 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 1695 oop obj_oop = JNIHandles::resolve(obj); 1696 return oopDesc::is_archive_object(obj_oop); 1697 WB_END 1698 1699 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 1700 return (jboolean)MetaspaceShared::is_in_shared_space(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1701 WB_END 1702 1703 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env)) 1704 return !StringTable::shared_string_mapped(); 1705 WB_END 1706 1707 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz)) 1708 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 1709 if (k->is_instance_klass()) { 1710 InstanceKlass *ik = InstanceKlass::cast(k); 1711 ConstantPool *cp = ik->constants(); 1712 objArrayOop refs = cp->resolved_references(); 1713 return (jobject)JNIHandles::make_local(env, refs); 1714 } else { 1715 return NULL; 1716 } 1717 WB_END 1718 1719 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env)) 1720 #if INCLUDE_CDS 1721 return true; 1722 #else 1723 return false; 1724 #endif 1725 WB_END 1726 1727 //Some convenience methods to deal with objects from java 1728 int WhiteBox::offset_for_field(const char* field_name, oop object, 1729 Symbol* signature_symbol) { 1730 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 1731 Thread* THREAD = Thread::current(); 1732 1733 //Get the class of our object 1734 Klass* arg_klass = object->klass(); 1735 //Turn it into an instance-klass 1736 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 1737 1738 //Create symbols to look for in the class 1739 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), 1740 THREAD); 1741 1742 //To be filled in with an offset of the field we're looking for 1743 fieldDescriptor fd; 1744 1745 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 1746 if (res == NULL) { 1747 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 1748 name_symbol->as_C_string()); 1749 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 1750 } 1751 1752 //fetch the field at the offset we've found 1753 int dest_offset = fd.offset(); 1754 1755 return dest_offset; 1756 } 1757 1758 1759 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 1760 int offset = offset_for_field(field_name, object, 1761 vmSymbols::string_signature()); 1762 oop string = object->obj_field(offset); 1763 if (string == NULL) { 1764 return NULL; 1765 } 1766 const char* ret = java_lang_String::as_utf8_string(string); 1767 return ret; 1768 } 1769 1770 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 1771 int offset = 1772 offset_for_field(field_name, object, vmSymbols::bool_signature()); 1773 bool ret = (object->bool_field(offset) == JNI_TRUE); 1774 return ret; 1775 } 1776 1777 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 1778 ResourceMark rm; 1779 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1780 1781 // one by one registration natives for exception catching 1782 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 1783 CHECK_JNI_EXCEPTION(env); 1784 for (int i = 0, n = method_count; i < n; ++i) { 1785 // Skip dummy entries 1786 if (method_array[i].fnPtr == NULL) continue; 1787 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 1788 jthrowable throwable_obj = env->ExceptionOccurred(); 1789 if (throwable_obj != NULL) { 1790 env->ExceptionClear(); 1791 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 1792 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 1793 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 1794 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 1795 method_array[i].name, method_array[i].signature); 1796 } 1797 } else { 1798 // Registration failed unexpectedly. 1799 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 1800 method_array[i].name, method_array[i].signature); 1801 env->UnregisterNatives(wbclass); 1802 break; 1803 } 1804 } 1805 } 1806 } 1807 1808 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 1809 // can't be in VM when we call JNI 1810 ThreadToNativeFromVM ttnfv(thread); 1811 const char* dir = env->GetStringUTFChars(compDirect, NULL); 1812 CHECK_JNI_EXCEPTION_(env, 0); 1813 int ret; 1814 { 1815 ThreadInVMfromNative ttvfn(thread); // back to VM 1816 ret = DirectivesParser::parse_string(dir, tty); 1817 } 1818 env->ReleaseStringUTFChars(compDirect, dir); 1819 // -1 for error parsing directive. Return 0 as number of directives added. 1820 if (ret == -1) { 1821 ret = 0; 1822 } 1823 return (jint) ret; 1824 WB_END 1825 1826 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 1827 DirectivesStack::pop(count); 1828 WB_END 1829 1830 // Checks that the library libfile has the noexecstack bit set. 1831 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 1832 jboolean ret = false; 1833 #ifdef LINUX 1834 // Can't be in VM when we call JNI. 1835 ThreadToNativeFromVM ttnfv(thread); 1836 const char* lf = env->GetStringUTFChars(libfile, NULL); 1837 CHECK_JNI_EXCEPTION_(env, 0); 1838 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 1839 env->ReleaseStringUTFChars(libfile, lf); 1840 #endif 1841 return ret; 1842 WB_END 1843 1844 #define CC (char*) 1845 1846 static JNINativeMethod methods[] = { 1847 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 1848 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 1849 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 1850 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 1851 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 1852 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 1853 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 1854 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 1855 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 1856 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, 1857 {CC"parseCommandLine0", 1858 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 1859 (void*) &WB_ParseCommandLine 1860 }, 1861 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1862 (void*)&WB_AddToBootstrapClassLoaderSearch}, 1863 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1864 (void*)&WB_AddToSystemClassLoaderSearch}, 1865 {CC"getCompressedOopsMaxHeapSize", CC"()J", 1866 (void*)&WB_GetCompressedOopsMaxHeapSize}, 1867 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 1868 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 1869 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 1870 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 1871 #if INCLUDE_ALL_GCS 1872 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 1873 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 1874 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 1875 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 1876 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 1877 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 1878 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 1879 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 1880 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 1881 (void*)&WB_G1AuxiliaryMemoryUsage }, 1882 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 1883 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 1884 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 1885 #endif // INCLUDE_ALL_GCS 1886 #if INCLUDE_NMT 1887 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 1888 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 1889 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 1890 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 1891 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 1892 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 1893 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 1894 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 1895 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 1896 #endif // INCLUDE_NMT 1897 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 1898 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 1899 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 1900 (void*)&WB_DeoptimizeMethod }, 1901 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 1902 (void*)&WB_IsMethodCompiled }, 1903 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 1904 (void*)&WB_IsMethodCompilable}, 1905 {CC"isMethodQueuedForCompilation0", 1906 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 1907 {CC"isIntrinsicAvailable0", 1908 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 1909 (void*)&WB_IsIntrinsicAvailable}, 1910 {CC"makeMethodNotCompilable0", 1911 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 1912 {CC"testSetDontInlineMethod0", 1913 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 1914 {CC"getMethodCompilationLevel0", 1915 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 1916 {CC"getMethodEntryBci0", 1917 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 1918 {CC"getCompileQueueSize", 1919 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 1920 {CC"testSetForceInlineMethod0", 1921 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 1922 {CC"enqueueMethodForCompilation0", 1923 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 1924 {CC"enqueueInitializerForCompilation0", 1925 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 1926 {CC"clearMethodState0", 1927 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 1928 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 1929 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 1930 {CC"matchesMethod", 1931 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 1932 (void*)&WB_MatchesMethod}, 1933 {CC"matchesInline", 1934 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 1935 (void*)&WB_MatchesInline}, 1936 {CC"shouldPrintAssembly", 1937 CC"(Ljava/lang/reflect/Executable;I)Z", 1938 (void*)&WB_ShouldPrintAssembly}, 1939 1940 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 1941 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 1942 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 1943 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 1944 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 1945 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 1946 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 1947 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 1948 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 1949 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 1950 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 1951 (void*)&WB_SetStringVMFlag}, 1952 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 1953 (void*)&WB_GetBooleanVMFlag}, 1954 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1955 (void*)&WB_GetIntVMFlag}, 1956 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1957 (void*)&WB_GetUintVMFlag}, 1958 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1959 (void*)&WB_GetIntxVMFlag}, 1960 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1961 (void*)&WB_GetUintxVMFlag}, 1962 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1963 (void*)&WB_GetUint64VMFlag}, 1964 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1965 (void*)&WB_GetSizeTVMFlag}, 1966 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 1967 (void*)&WB_GetDoubleVMFlag}, 1968 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 1969 (void*)&WB_GetStringVMFlag}, 1970 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 1971 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 1972 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 1973 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 1974 {CC"allocateMetaspace", 1975 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 1976 {CC"freeMetaspace", 1977 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 1978 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 1979 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 1980 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect }, 1981 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment }, 1982 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 1983 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 1984 (void*)&WB_GetNMethod }, 1985 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 1986 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 1987 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 1988 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 1989 {CC"getCompilationActivityMode", 1990 CC"()I", (void*)&WB_GetCompilationActivityMode}, 1991 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 1992 (void*)&WB_GetMethodData }, 1993 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 1994 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 1995 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 1996 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 1997 (void*)&WB_DefineModule }, 1998 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 1999 (void*)&WB_AddModuleExports }, 2000 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2001 (void*)&WB_AddReadsModule }, 2002 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2003 (void*)&WB_AddModuleExportsToAllUnnamed }, 2004 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2005 (void*)&WB_AddModuleExportsToAll }, 2006 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls }, 2007 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2008 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2009 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2010 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 2011 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 2012 {CC"remapInstructionOperandFromCPCache0", 2013 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 2014 {CC"encodeConstantPoolIndyIndex0", 2015 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 2016 {CC"getMethodBooleanOption", 2017 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2018 (void*)&WB_GetMethodBooleaneOption}, 2019 {CC"getMethodIntxOption", 2020 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2021 (void*)&WB_GetMethodIntxOption}, 2022 {CC"getMethodUintxOption", 2023 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2024 (void*)&WB_GetMethodUintxOption}, 2025 {CC"getMethodDoubleOption", 2026 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2027 (void*)&WB_GetMethodDoubleOption}, 2028 {CC"getMethodStringOption", 2029 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2030 (void*)&WB_GetMethodStringOption}, 2031 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 2032 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2033 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored }, 2034 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 2035 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild }, 2036 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2037 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2038 (void*)&WB_AddCompilerDirective }, 2039 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2040 {CC"currentGC", CC"()I", (void*)&WB_CurrentGC}, 2041 {CC"allSupportedGC", CC"()I", (void*)&WB_AllSupportedGC}, 2042 {CC"gcSelectedByErgo", CC"()Z", (void*)&WB_GCSelectedByErgo}, 2043 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl}, 2044 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;", 2045 (void*)&WB_GetConcurrentGCPhases}, 2046 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z", 2047 (void*)&WB_RequestConcurrentGCPhase}, 2048 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2049 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2050 }; 2051 2052 #undef CC 2053 2054 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2055 { 2056 if (WhiteBoxAPI) { 2057 // Make sure that wbclass is loaded by the null classloader 2058 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass()); 2059 Handle loader(THREAD, ik->class_loader()); 2060 if (loader.is_null()) { 2061 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2062 WhiteBox::register_extended(env, wbclass, thread); 2063 WhiteBox::set_used(); 2064 } 2065 } 2066 } 2067 JVM_END