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/debug.hpp" 59 #include "utilities/exceptions.hpp" 60 #include "utilities/macros.hpp" 61 #if INCLUDE_ALL_GCS 62 #include "gc/g1/concurrentMarkThread.hpp" 63 #include "gc/g1/g1CollectedHeap.inline.hpp" 64 #include "gc/g1/g1ConcurrentMark.hpp" 65 #include "gc/g1/heapRegionRemSet.hpp" 66 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 67 #include "gc/parallel/adjoiningGenerations.hpp" 68 #endif // INCLUDE_ALL_GCS 69 #if INCLUDE_NMT 70 #include "services/mallocSiteTable.hpp" 71 #include "services/memTracker.hpp" 72 #include "utilities/nativeCallStack.hpp" 73 #endif // INCLUDE_NMT 74 75 76 #define SIZE_T_MAX_VALUE ((size_t) -1) 77 78 bool WhiteBox::_used = false; 79 volatile bool WhiteBox::compilation_locked = false; 80 81 class VM_WhiteBoxOperation : public VM_Operation { 82 public: 83 VM_WhiteBoxOperation() { } 84 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 85 bool allow_nested_vm_operations() const { return true; } 86 }; 87 88 89 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 90 return (jlong)(void*)JNIHandles::resolve(obj); 91 WB_END 92 93 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 94 return heapOopSize; 95 WB_END 96 97 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 98 return os::vm_page_size(); 99 WB_END 100 101 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 102 return os::vm_allocation_granularity(); 103 WB_END 104 105 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 106 return os::large_page_size(); 107 WB_END 108 109 class WBIsKlassAliveClosure : public KlassClosure { 110 Symbol* _name; 111 bool _found; 112 public: 113 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} 114 115 void do_klass(Klass* k) { 116 if (_found) return; 117 Symbol* ksym = k->name(); 118 if (ksym->fast_compare(_name) == 0) { 119 _found = true; 120 } 121 } 122 123 bool found() const { 124 return _found; 125 } 126 }; 127 128 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) 129 oop h_name = JNIHandles::resolve(name); 130 if (h_name == NULL) return false; 131 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false); 132 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 133 134 WBIsKlassAliveClosure closure(sym); 135 ClassLoaderDataGraph::classes_do(&closure); 136 137 return closure.found(); 138 WB_END 139 140 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 141 #if INCLUDE_JVMTI 142 ResourceMark rm; 143 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 144 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 145 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 146 assert(err == JVMTI_ERROR_NONE, "must not fail"); 147 #endif 148 } 149 WB_END 150 151 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 152 #if INCLUDE_JVMTI 153 ResourceMark rm; 154 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 155 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 156 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 157 assert(err == JVMTI_ERROR_NONE, "must not fail"); 158 #endif 159 } 160 WB_END 161 162 163 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 164 return (jlong)Arguments::max_heap_for_compressed_oops(); 165 } 166 WB_END 167 168 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 169 CollectorPolicy * p = Universe::heap()->collector_policy(); 170 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " 171 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 172 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(), 173 p->space_alignment(), p->heap_alignment()); 174 } 175 WB_END 176 177 #ifndef PRODUCT 178 // Forward declaration 179 void TestReservedSpace_test(); 180 void TestReserveMemorySpecial_test(); 181 void TestVirtualSpace_test(); 182 void TestMetaspaceAux_test(); 183 #endif 184 185 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) 186 #ifndef PRODUCT 187 TestReservedSpace_test(); 188 TestReserveMemorySpecial_test(); 189 TestVirtualSpace_test(); 190 TestMetaspaceAux_test(); 191 #endif 192 WB_END 193 194 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 195 size_t granularity = os::vm_allocation_granularity(); 196 ReservedHeapSpace rhs(100 * granularity, granularity, false); 197 VirtualSpace vs; 198 vs.initialize(rhs, 50 * granularity); 199 200 // Check if constraints are complied 201 if (!( UseCompressedOops && rhs.base() != NULL && 202 Universe::narrow_oop_base() != NULL && 203 Universe::narrow_oop_use_implicit_null_checks() )) { 204 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 205 "\tUseCompressedOops is %d\n" 206 "\trhs.base() is " PTR_FORMAT "\n" 207 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n" 208 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d", 209 UseCompressedOops, 210 p2i(rhs.base()), 211 p2i(Universe::narrow_oop_base()), 212 Universe::narrow_oop_use_implicit_null_checks()); 213 return; 214 } 215 tty->print_cr("Reading from no access area... "); 216 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 217 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 218 WB_END 219 220 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 221 size_t magnitude, size_t iterations) { 222 size_t granularity = os::vm_allocation_granularity(); 223 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false); 224 VirtualSpace vs; 225 if (!vs.initialize(rhs, 0)) { 226 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 227 return 3; 228 } 229 230 long seed = os::random(); 231 tty->print_cr("Random seed is %ld", seed); 232 os::init_random(seed); 233 234 for (size_t i = 0; i < iterations; i++) { 235 236 // Whether we will shrink or grow 237 bool shrink = os::random() % 2L == 0; 238 239 // Get random delta to resize virtual space 240 size_t delta = (size_t)os::random() % magnitude; 241 242 // If we are about to shrink virtual space below zero, then expand instead 243 if (shrink && vs.committed_size() < delta) { 244 shrink = false; 245 } 246 247 // Resizing by delta 248 if (shrink) { 249 vs.shrink_by(delta); 250 } else { 251 // If expanding fails expand_by will silently return false 252 vs.expand_by(delta, true); 253 } 254 } 255 return 0; 256 } 257 258 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 259 jlong reserved_space_size, jlong magnitude, jlong iterations)) 260 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 261 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 262 iterations); 263 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 264 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 265 return 1; 266 } 267 268 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 269 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 270 if (sizeof(size_t) < sizeof(jlong)) { 271 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; 272 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 273 || iterations > size_t_max_value) { 274 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 275 return 2; 276 } 277 } 278 279 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 280 (size_t) magnitude, (size_t) iterations); 281 WB_END 282 283 static const jint serial_code = 1; 284 static const jint parallel_code = 2; 285 static const jint cms_code = 4; 286 static const jint g1_code = 8; 287 288 WB_ENTRY(jint, WB_CurrentGC(JNIEnv* env, jobject o, jobject obj)) 289 if (UseSerialGC) { 290 return serial_code; 291 } else if (UseParallelGC || UseParallelOldGC) { 292 return parallel_code; 293 } if (UseConcMarkSweepGC) { 294 return cms_code; 295 } else if (UseG1GC) { 296 return g1_code; 297 } 298 ShouldNotReachHere(); 299 return 0; 300 WB_END 301 302 WB_ENTRY(jint, WB_AllSupportedGC(JNIEnv* env, jobject o, jobject obj)) 303 #if INCLUDE_ALL_GCS 304 return serial_code | parallel_code | cms_code | g1_code; 305 #else 306 return serial_code; 307 #endif // INCLUDE_ALL_GCS 308 WB_END 309 310 WB_ENTRY(jboolean, WB_GCSelectedByErgo(JNIEnv* env, jobject o, jobject obj)) 311 if (UseSerialGC) { 312 return FLAG_IS_ERGO(UseSerialGC); 313 } else if (UseParallelGC) { 314 return FLAG_IS_ERGO(UseParallelGC); 315 } else if (UseParallelOldGC) { 316 return FLAG_IS_ERGO(UseParallelOldGC); 317 } else if (UseConcMarkSweepGC) { 318 return FLAG_IS_ERGO(UseConcMarkSweepGC); 319 } else if (UseG1GC) { 320 return FLAG_IS_ERGO(UseG1GC); 321 } 322 ShouldNotReachHere(); 323 return false; 324 WB_END 325 326 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 327 oop p = JNIHandles::resolve(obj); 328 #if INCLUDE_ALL_GCS 329 if (UseG1GC) { 330 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 331 const HeapRegion* hr = g1->heap_region_containing(p); 332 if (hr == NULL) { 333 return false; 334 } 335 return !(hr->is_young()); 336 } else if (UseParallelGC) { 337 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 338 return !psh->is_in_young(p); 339 } 340 #endif // INCLUDE_ALL_GCS 341 GenCollectedHeap* gch = GenCollectedHeap::heap(); 342 return !gch->is_in_young(p); 343 WB_END 344 345 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 346 oop p = JNIHandles::resolve(obj); 347 return p->size() * HeapWordSize; 348 WB_END 349 350 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 351 size_t alignment = Universe::heap()->collector_policy()->space_alignment(); 352 return (jlong)alignment; 353 WB_END 354 355 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 356 size_t alignment = Universe::heap()->collector_policy()->heap_alignment(); 357 return (jlong)alignment; 358 WB_END 359 360 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o)) 361 return Universe::heap()->supports_concurrent_phase_control(); 362 WB_END 363 364 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o)) 365 const char* const* phases = Universe::heap()->concurrent_phases(); 366 jint nphases = 0; 367 for ( ; phases[nphases] != NULL; ++nphases) ; 368 369 ResourceMark rm(thread); 370 ThreadToNativeFromVM ttn(thread); 371 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 372 CHECK_JNI_EXCEPTION_(env, NULL); 373 374 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL); 375 CHECK_JNI_EXCEPTION_(env, NULL); 376 377 // If push fails, return with pending exception. 378 if (env->PushLocalFrame(nphases) < 0) return NULL; 379 for (jint i = 0; i < nphases; ++i) { 380 jstring phase = env->NewStringUTF(phases[i]); 381 CHECK_JNI_EXCEPTION_(env, NULL); 382 env->SetObjectArrayElement(result, i, phase); 383 CHECK_JNI_EXCEPTION_(env, NULL); 384 } 385 env->PopLocalFrame(NULL); 386 387 return result; 388 WB_END 389 390 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name)) 391 Handle h_name(THREAD, JNIHandles::resolve(name)); 392 ResourceMark rm; 393 const char* c_name = java_lang_String::as_utf8_string(h_name()); 394 return Universe::heap()->request_concurrent_phase(c_name); 395 WB_END 396 397 #if INCLUDE_ALL_GCS 398 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 399 if (UseG1GC) { 400 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 401 oop result = JNIHandles::resolve(obj); 402 const HeapRegion* hr = g1->heap_region_containing(result); 403 return hr->is_humongous(); 404 } 405 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 406 WB_END 407 408 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 409 if (UseG1GC) { 410 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 411 const HeapRegion* hr = g1->heap_region_containing((void*) addr); 412 return hr->is_humongous(); 413 } 414 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 415 WB_END 416 417 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 418 if (UseG1GC) { 419 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 420 const HeapRegion* hr = g1->heap_region_containing((void*) addr); 421 return hr->is_free(); 422 } 423 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 424 WB_END 425 426 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 427 if (UseG1GC) { 428 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 429 size_t nr = g1->max_regions(); 430 return (jlong)nr; 431 } 432 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 433 WB_END 434 435 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 436 if (UseG1GC) { 437 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 438 size_t nr = g1->num_free_regions(); 439 return (jlong)nr; 440 } 441 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 442 WB_END 443 444 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 445 if (UseG1GC) { 446 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 447 return g1h->concurrent_mark()->cmThread()->during_cycle(); 448 } 449 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 450 WB_END 451 452 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o)) 453 if (UseG1GC) { 454 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 455 if (!g1h->concurrent_mark()->cmThread()->during_cycle()) { 456 g1h->collect(GCCause::_wb_conc_mark); 457 return true; 458 } 459 return false; 460 } 461 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled"); 462 WB_END 463 464 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 465 if (UseG1GC) { 466 return (jint)HeapRegion::GrainBytes; 467 } 468 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 469 WB_END 470 471 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 472 #if INCLUDE_ALL_GCS 473 if (UseParallelGC) { 474 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment(); 475 } 476 #endif // INCLUDE_ALL_GCS 477 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 478 WB_END 479 480 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 481 #if INCLUDE_ALL_GCS 482 if (UseParallelGC) { 483 return ParallelScavengeHeap::heap()->generation_alignment(); 484 } 485 #endif // INCLUDE_ALL_GCS 486 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 487 WB_END 488 489 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 490 #if INCLUDE_ALL_GCS 491 if (UseG1GC) { 492 ResourceMark rm(THREAD); 493 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 494 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 495 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 496 return JNIHandles::make_local(env, h()); 497 } 498 #endif // INCLUDE_ALL_GCS 499 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 500 WB_END 501 502 class OldRegionsLivenessClosure: public HeapRegionClosure { 503 504 private: 505 const int _liveness; 506 size_t _total_count; 507 size_t _total_memory; 508 size_t _total_memory_to_free; 509 510 public: 511 OldRegionsLivenessClosure(int liveness) : 512 _liveness(liveness), 513 _total_count(0), 514 _total_memory(0), 515 _total_memory_to_free(0) { } 516 517 size_t total_count() { return _total_count; } 518 size_t total_memory() { return _total_memory; } 519 size_t total_memory_to_free() { return _total_memory_to_free; } 520 521 bool doHeapRegion(HeapRegion* r) { 522 if (r->is_old()) { 523 size_t prev_live = r->marked_bytes(); 524 size_t live = r->live_bytes(); 525 size_t size = r->used(); 526 size_t reg_size = HeapRegion::GrainBytes; 527 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 528 _total_memory += size; 529 ++_total_count; 530 if (size == reg_size) { 531 // we don't include non-full regions since they are unlikely included in mixed gc 532 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 533 _total_memory_to_free += size - prev_live; 534 } 535 } 536 } 537 return false; 538 } 539 }; 540 541 542 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 543 if (!UseG1GC) { 544 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 545 } 546 if (liveness < 0) { 547 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 548 } 549 550 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 551 OldRegionsLivenessClosure rli(liveness); 552 g1h->heap_region_iterate(&rli); 553 554 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 555 result->long_at_put(0, rli.total_count()); 556 result->long_at_put(1, rli.total_memory()); 557 result->long_at_put(2, rli.total_memory_to_free()); 558 return (jlongArray) JNIHandles::make_local(env, result); 559 WB_END 560 561 #endif // INCLUDE_ALL_GCS 562 563 #if INCLUDE_NMT 564 // Alloc memory using the test memory type so that we can use that to see if 565 // NMT picks it up correctly 566 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 567 jlong addr = 0; 568 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 569 return addr; 570 WB_END 571 572 // Alloc memory with pseudo call stack. The test can create psudo malloc 573 // allocation site to stress the malloc tracking. 574 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 575 address pc = (address)(size_t)pseudo_stack; 576 NativeCallStack stack(&pc, 1); 577 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 578 WB_END 579 580 // Free the memory allocated by NMTAllocTest 581 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 582 os::free((void*)(uintptr_t)mem); 583 WB_END 584 585 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 586 jlong addr = 0; 587 588 addr = (jlong)(uintptr_t)os::reserve_memory(size); 589 MemTracker::record_virtual_memory_type((address)addr, mtTest); 590 591 return addr; 592 WB_END 593 594 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 595 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 596 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 597 WB_END 598 599 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 600 os::uncommit_memory((char *)(uintptr_t)addr, size); 601 WB_END 602 603 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 604 os::release_memory((char *)(uintptr_t)addr, size); 605 WB_END 606 607 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env)) 608 // Test that we can downgrade NMT levels but not upgrade them. 609 if (MemTracker::tracking_level() == NMT_off) { 610 MemTracker::transition_to(NMT_off); 611 return MemTracker::tracking_level() == NMT_off; 612 } else { 613 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking"); 614 MemTracker::transition_to(NMT_summary); 615 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now"); 616 617 // Can't go to detail once NMT is set to summary. 618 MemTracker::transition_to(NMT_detail); 619 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now"); 620 621 // Shutdown sets tracking level to minimal. 622 MemTracker::shutdown(); 623 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); 624 625 // Once the tracking level is minimal, we cannot increase to summary. 626 // The code ignores this request instead of asserting because if the malloc site 627 // table overflows in another thread, it tries to change the code to summary. 628 MemTracker::transition_to(NMT_summary); 629 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 630 631 // Really can never go up to detail, verify that the code would never do this. 632 MemTracker::transition_to(NMT_detail); 633 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 634 return MemTracker::tracking_level() == NMT_minimal; 635 } 636 WB_END 637 638 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 639 int hash_size = MallocSiteTable::hash_buckets(); 640 assert(hash_size > 0, "NMT hash_size should be > 0"); 641 return (jint)hash_size; 642 WB_END 643 #endif // INCLUDE_NMT 644 645 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 646 assert(method != NULL, "method should not be null"); 647 ThreadToNativeFromVM ttn(thread); 648 return env->FromReflectedMethod(method); 649 } 650 651 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 652 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 653 private: 654 int _result; 655 const bool _make_not_entrant; 656 public: 657 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 658 _result(0), _make_not_entrant(make_not_entrant) { } 659 int result() const { return _result; } 660 661 void doit() { 662 for (JavaThread* t = Threads::first(); t != NULL; t = t->next()) { 663 if (t->has_last_Java_frame()) { 664 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) { 665 frame* f = fst.current(); 666 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 667 RegisterMap* reg_map = fst.register_map(); 668 Deoptimization::deoptimize(t, *f, reg_map); 669 if (_make_not_entrant) { 670 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 671 assert(cm != NULL, "sanity check"); 672 cm->make_not_entrant(); 673 } 674 ++_result; 675 } 676 } 677 } 678 } 679 } 680 }; 681 682 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 683 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 684 VMThread::execute(&op); 685 return op.result(); 686 WB_END 687 688 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 689 MutexLockerEx mu(Compile_lock); 690 CodeCache::mark_all_nmethods_for_deoptimization(); 691 VM_Deoptimize op; 692 VMThread::execute(&op); 693 WB_END 694 695 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 696 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 697 int result = 0; 698 CHECK_JNI_EXCEPTION_(env, result); 699 MutexLockerEx mu(Compile_lock); 700 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 701 if (is_osr) { 702 result += mh->mark_osr_nmethods(); 703 } else if (mh->code() != NULL) { 704 mh->code()->mark_for_deoptimization(); 705 ++result; 706 } 707 result += CodeCache::mark_for_deoptimization(mh()); 708 if (result > 0) { 709 VM_Deoptimize op; 710 VMThread::execute(&op); 711 } 712 return result; 713 WB_END 714 715 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 716 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 717 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 718 MutexLockerEx mu(Compile_lock); 719 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 720 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 721 if (code == NULL) { 722 return JNI_FALSE; 723 } 724 return (code->is_alive() && !code->is_marked_for_deoptimization()); 725 WB_END 726 727 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 728 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 729 return false; 730 } 731 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 732 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 733 MutexLockerEx mu(Compile_lock); 734 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 735 if (is_osr) { 736 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); 737 } else { 738 return CompilationPolicy::can_be_compiled(mh, comp_level); 739 } 740 WB_END 741 742 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 743 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 744 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 745 MutexLockerEx mu(Compile_lock); 746 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 747 return mh->queued_for_compilation(); 748 WB_END 749 750 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 751 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 752 return false; // Intrinsic is not available on a non-existent compilation level. 753 } 754 jmethodID method_id, compilation_context_id; 755 method_id = reflected_method_to_jmid(thread, env, method); 756 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 757 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 758 759 DirectiveSet* directive; 760 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 761 assert(comp != NULL, "compiler not available"); 762 if (compilation_context != NULL) { 763 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 764 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 765 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 766 directive = DirectivesStack::getMatchingDirective(cch, comp); 767 } else { 768 // Calling with NULL matches default directive 769 directive = DirectivesStack::getDefaultDirective(comp); 770 } 771 bool result = comp->is_intrinsic_available(mh, directive); 772 DirectivesStack::release(directive); 773 return result; 774 WB_END 775 776 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 777 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 778 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 779 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 780 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 781 return (code != NULL ? code->comp_level() : CompLevel_none); 782 WB_END 783 784 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 785 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 786 CHECK_JNI_EXCEPTION(env); 787 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 788 if (is_osr) { 789 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox"); 790 } else { 791 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); 792 } 793 WB_END 794 795 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 796 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 797 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 798 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 799 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 800 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 801 WB_END 802 803 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 804 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 805 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 806 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 807 bool result = mh->dont_inline(); 808 mh->set_dont_inline(value == JNI_TRUE); 809 return result; 810 WB_END 811 812 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 813 if (comp_level == CompLevel_any) { 814 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 815 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 816 } else { 817 return CompileBroker::queue_size(comp_level); 818 } 819 WB_END 820 821 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 822 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 823 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 824 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 825 bool result = mh->force_inline(); 826 mh->set_force_inline(value == JNI_TRUE); 827 return result; 828 WB_END 829 830 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) { 831 // Screen for unavailable/bad comp level or null method 832 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) || 833 CompileBroker::compiler(comp_level) == NULL) { 834 return false; 835 } 836 methodHandle mh(THREAD, method); 837 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD); 838 MutexLockerEx mu(Compile_lock); 839 return (mh->queued_for_compilation() || nm != NULL); 840 } 841 842 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 843 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 844 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 845 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 846 WB_END 847 848 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 849 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 850 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD); 851 WB_END 852 853 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 854 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 855 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 856 857 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 858 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 859 bool result = directive->PrintAssemblyOption; 860 DirectivesStack::release(directive); 861 862 return result; 863 WB_END 864 865 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 866 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 867 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 868 869 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 870 871 ResourceMark rm; 872 const char* error_msg = NULL; 873 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 874 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 875 876 if (m == NULL) { 877 assert(error_msg != NULL, "Always have an error message"); 878 tty->print_cr("Got error: %s", error_msg); 879 return -1; // Pattern failed 880 } 881 882 // Pattern works - now check if it matches 883 int result; 884 if (m->match(mh, InlineMatcher::force_inline)) { 885 result = 2; // Force inline match 886 } else if (m->match(mh, InlineMatcher::dont_inline)) { 887 result = 1; // Dont inline match 888 } else { 889 result = 0; // No match 890 } 891 delete m; 892 return result; 893 WB_END 894 895 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 896 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 897 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 898 899 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 900 901 ResourceMark rm; 902 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 903 904 const char* error_msg = NULL; 905 906 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg); 907 if (m == NULL) { 908 assert(error_msg != NULL, "Must have error_msg"); 909 tty->print_cr("Got error: %s", error_msg); 910 return -1; 911 } 912 913 // Pattern works - now check if it matches 914 int result = m->matches(mh); 915 delete m; 916 assert(result == 0 || result == 1, "Result out of range"); 917 return result; 918 WB_END 919 920 static AlwaysFalseClosure always_false; 921 922 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 923 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 924 CHECK_JNI_EXCEPTION(env); 925 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 926 MutexLockerEx mu(Compile_lock); 927 MethodData* mdo = mh->method_data(); 928 MethodCounters* mcs = mh->method_counters(); 929 930 if (mdo != NULL) { 931 mdo->init(); 932 ResourceMark rm; 933 int arg_count = mdo->method()->size_of_parameters(); 934 for (int i = 0; i < arg_count; i++) { 935 mdo->set_arg_modified(i, 0); 936 } 937 MutexLockerEx mu(mdo->extra_data_lock()); 938 mdo->clean_method_data(&always_false); 939 } 940 941 mh->clear_not_c1_compilable(); 942 mh->clear_not_c2_compilable(); 943 mh->clear_not_c2_osr_compilable(); 944 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 945 if (mcs != NULL) { 946 mcs->backedge_counter()->init(); 947 mcs->invocation_counter()->init(); 948 mcs->set_interpreter_invocation_count(0); 949 mcs->set_interpreter_throwout_count(0); 950 951 #ifdef TIERED 952 mcs->set_rate(0.0F); 953 mh->set_prev_event_count(0); 954 mh->set_prev_time(0); 955 #endif 956 } 957 WB_END 958 959 template <typename T> 960 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) { 961 if (name == NULL) { 962 return false; 963 } 964 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 965 const char* flag_name = env->GetStringUTFChars(name, NULL); 966 CHECK_JNI_EXCEPTION_(env, false); 967 Flag::Error result = (*TAt)(flag_name, value, true, true); 968 env->ReleaseStringUTFChars(name, flag_name); 969 return (result == Flag::SUCCESS); 970 } 971 972 template <typename T> 973 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) { 974 if (name == NULL) { 975 return false; 976 } 977 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 978 const char* flag_name = env->GetStringUTFChars(name, NULL); 979 CHECK_JNI_EXCEPTION_(env, false); 980 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL); 981 env->ReleaseStringUTFChars(name, flag_name); 982 return (result == Flag::SUCCESS); 983 } 984 985 template <typename T> 986 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 987 ResourceMark rm(thread); 988 jclass clazz = env->FindClass(name->as_C_string()); 989 CHECK_JNI_EXCEPTION_(env, NULL); 990 jmethodID methodID = env->GetStaticMethodID(clazz, 991 vmSymbols::valueOf_name()->as_C_string(), 992 sig->as_C_string()); 993 CHECK_JNI_EXCEPTION_(env, NULL); 994 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 995 CHECK_JNI_EXCEPTION_(env, NULL); 996 return result; 997 } 998 999 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1000 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1001 } 1002 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1003 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1004 } 1005 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1006 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1007 } 1008 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1009 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1010 }*/ 1011 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1012 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1013 } 1014 1015 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 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, NULL); 1019 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true); 1020 env->ReleaseStringUTFChars(name, flag_name); 1021 return result; 1022 } 1023 1024 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1025 Flag* flag = getVMFlag(thread, env, name); 1026 return (flag != NULL) && flag->is_constant_in_binary(); 1027 WB_END 1028 1029 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1030 Flag* flag = getVMFlag(thread, env, name); 1031 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 1032 WB_END 1033 1034 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1035 bool result; 1036 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) { 1037 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1038 return booleanBox(thread, env, result); 1039 } 1040 return NULL; 1041 WB_END 1042 1043 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1044 int result; 1045 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) { 1046 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1047 return longBox(thread, env, result); 1048 } 1049 return NULL; 1050 WB_END 1051 1052 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1053 uint result; 1054 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) { 1055 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1056 return longBox(thread, env, result); 1057 } 1058 return NULL; 1059 WB_END 1060 1061 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1062 intx result; 1063 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) { 1064 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1065 return longBox(thread, env, result); 1066 } 1067 return NULL; 1068 WB_END 1069 1070 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1071 uintx result; 1072 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) { 1073 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1074 return longBox(thread, env, result); 1075 } 1076 return NULL; 1077 WB_END 1078 1079 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1080 uint64_t result; 1081 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) { 1082 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1083 return longBox(thread, env, result); 1084 } 1085 return NULL; 1086 WB_END 1087 1088 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1089 uintx result; 1090 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) { 1091 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1092 return longBox(thread, env, result); 1093 } 1094 return NULL; 1095 WB_END 1096 1097 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1098 double result; 1099 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) { 1100 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1101 return doubleBox(thread, env, result); 1102 } 1103 return NULL; 1104 WB_END 1105 1106 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1107 ccstr ccstrResult; 1108 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) { 1109 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1110 jstring result = env->NewStringUTF(ccstrResult); 1111 CHECK_JNI_EXCEPTION_(env, NULL); 1112 return result; 1113 } 1114 return NULL; 1115 WB_END 1116 1117 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1118 bool result = value == JNI_TRUE ? true : false; 1119 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut); 1120 WB_END 1121 1122 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1123 int result = value; 1124 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut); 1125 WB_END 1126 1127 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1128 uint result = value; 1129 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut); 1130 WB_END 1131 1132 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1133 intx result = value; 1134 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut); 1135 WB_END 1136 1137 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1138 uintx result = value; 1139 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut); 1140 WB_END 1141 1142 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1143 uint64_t result = value; 1144 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut); 1145 WB_END 1146 1147 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1148 size_t result = value; 1149 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut); 1150 WB_END 1151 1152 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1153 double result = value; 1154 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut); 1155 WB_END 1156 1157 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1158 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1159 const char* ccstrValue; 1160 if (value == NULL) { 1161 ccstrValue = NULL; 1162 } 1163 else { 1164 ccstrValue = env->GetStringUTFChars(value, NULL); 1165 CHECK_JNI_EXCEPTION(env); 1166 } 1167 ccstr ccstrResult = ccstrValue; 1168 bool needFree; 1169 { 1170 ThreadInVMfromNative ttvfn(thread); // back to VM 1171 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut); 1172 } 1173 if (value != NULL) { 1174 env->ReleaseStringUTFChars(value, ccstrValue); 1175 } 1176 if (needFree) { 1177 FREE_C_HEAP_ARRAY(char, ccstrResult); 1178 } 1179 WB_END 1180 1181 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1182 WhiteBox::compilation_locked = true; 1183 WB_END 1184 1185 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1186 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1187 WhiteBox::compilation_locked = false; 1188 mo.notify_all(); 1189 WB_END 1190 1191 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 1192 // Force a code cache sweep and block until it finished 1193 NMethodSweeper::force_sweep(); 1194 WB_END 1195 1196 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1197 ResourceMark rm(THREAD); 1198 int len; 1199 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1200 return (StringTable::lookup(name, len) != NULL); 1201 WB_END 1202 1203 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1204 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true); 1205 Universe::heap()->collect(GCCause::_wb_full_gc); 1206 #if INCLUDE_ALL_GCS 1207 if (UseG1GC) { 1208 // Needs to be cleared explicitly for G1 1209 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false); 1210 } 1211 #endif // INCLUDE_ALL_GCS 1212 WB_END 1213 1214 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1215 Universe::heap()->collect(GCCause::_wb_young_gc); 1216 WB_END 1217 1218 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1219 // static+volatile in order to force the read to happen 1220 // (not be eliminated by the compiler) 1221 static char c; 1222 static volatile char* p; 1223 1224 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 1225 if (p == NULL) { 1226 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1227 } 1228 1229 c = *p; 1230 WB_END 1231 1232 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1233 const char* features = VM_Version::features_string(); 1234 ThreadToNativeFromVM ttn(thread); 1235 jstring features_string = env->NewStringUTF(features); 1236 1237 CHECK_JNI_EXCEPTION_(env, NULL); 1238 1239 return features_string; 1240 WB_END 1241 1242 int WhiteBox::get_blob_type(const CodeBlob* code) { 1243 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1244 if (code->is_aot()) { 1245 return -1; 1246 } 1247 return CodeCache::get_code_heap(code)->code_blob_type(); 1248 } 1249 1250 CodeHeap* WhiteBox::get_code_heap(int blob_type) { 1251 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1252 return CodeCache::get_code_heap(blob_type); 1253 } 1254 1255 struct CodeBlobStub { 1256 CodeBlobStub(const CodeBlob* blob) : 1257 name(os::strdup(blob->name())), 1258 size(blob->size()), 1259 blob_type(WhiteBox::get_blob_type(blob)), 1260 address((jlong) blob) { } 1261 ~CodeBlobStub() { os::free((void*) name); } 1262 const char* const name; 1263 const jint size; 1264 const jint blob_type; 1265 const jlong address; 1266 }; 1267 1268 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1269 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1270 CHECK_JNI_EXCEPTION_(env, NULL); 1271 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1272 1273 jstring name = env->NewStringUTF(cb->name); 1274 CHECK_JNI_EXCEPTION_(env, NULL); 1275 env->SetObjectArrayElement(result, 0, name); 1276 1277 jobject obj = integerBox(thread, env, cb->size); 1278 CHECK_JNI_EXCEPTION_(env, NULL); 1279 env->SetObjectArrayElement(result, 1, obj); 1280 1281 obj = integerBox(thread, env, cb->blob_type); 1282 CHECK_JNI_EXCEPTION_(env, NULL); 1283 env->SetObjectArrayElement(result, 2, obj); 1284 1285 obj = longBox(thread, env, cb->address); 1286 CHECK_JNI_EXCEPTION_(env, NULL); 1287 env->SetObjectArrayElement(result, 3, obj); 1288 1289 return result; 1290 } 1291 1292 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1293 ResourceMark rm(THREAD); 1294 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1295 CHECK_JNI_EXCEPTION_(env, NULL); 1296 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1297 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1298 jobjectArray result = NULL; 1299 if (code == NULL) { 1300 return result; 1301 } 1302 int comp_level = code->comp_level(); 1303 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size(); 1304 1305 ThreadToNativeFromVM ttn(thread); 1306 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1307 CHECK_JNI_EXCEPTION_(env, NULL); 1308 result = env->NewObjectArray(5, clazz, NULL); 1309 if (result == NULL) { 1310 return result; 1311 } 1312 1313 CodeBlobStub stub(code); 1314 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1315 CHECK_JNI_EXCEPTION_(env, NULL); 1316 env->SetObjectArrayElement(result, 0, codeBlob); 1317 1318 jobject level = integerBox(thread, env, comp_level); 1319 CHECK_JNI_EXCEPTION_(env, NULL); 1320 env->SetObjectArrayElement(result, 1, level); 1321 1322 jbyteArray insts = env->NewByteArray(insts_size); 1323 CHECK_JNI_EXCEPTION_(env, NULL); 1324 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1325 env->SetObjectArrayElement(result, 2, insts); 1326 1327 jobject id = integerBox(thread, env, code->compile_id()); 1328 CHECK_JNI_EXCEPTION_(env, NULL); 1329 env->SetObjectArrayElement(result, 3, id); 1330 1331 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1332 CHECK_JNI_EXCEPTION_(env, NULL); 1333 env->SetObjectArrayElement(result, 4, entry_point); 1334 1335 return result; 1336 WB_END 1337 1338 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1339 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1340 BufferBlob* blob; 1341 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1342 if (full_size < size) { 1343 full_size += round_to(size - full_size, oopSize); 1344 } 1345 { 1346 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1347 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1348 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1349 } 1350 // Track memory usage statistic after releasing CodeCache_lock 1351 MemoryService::track_code_cache_memory_usage(); 1352 return blob; 1353 } 1354 1355 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1356 if (size < 0) { 1357 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1358 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1359 } 1360 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1361 WB_END 1362 1363 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1364 if (addr == 0) { 1365 return; 1366 } 1367 BufferBlob::free((BufferBlob*) addr); 1368 WB_END 1369 1370 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1371 ResourceMark rm; 1372 GrowableArray<CodeBlobStub*> blobs; 1373 { 1374 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1375 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1376 if (heap == NULL) { 1377 return NULL; 1378 } 1379 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1380 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1381 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1382 new (stub) CodeBlobStub(cb); 1383 blobs.append(stub); 1384 } 1385 } 1386 if (blobs.length() == 0) { 1387 return NULL; 1388 } 1389 ThreadToNativeFromVM ttn(thread); 1390 jobjectArray result = NULL; 1391 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1392 CHECK_JNI_EXCEPTION_(env, NULL); 1393 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1394 CHECK_JNI_EXCEPTION_(env, NULL); 1395 if (result == NULL) { 1396 return result; 1397 } 1398 int i = 0; 1399 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1400 it != blobs.end(); ++it) { 1401 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1402 CHECK_JNI_EXCEPTION_(env, NULL); 1403 env->SetObjectArrayElement(result, i, obj); 1404 CHECK_JNI_EXCEPTION_(env, NULL); 1405 ++i; 1406 } 1407 return result; 1408 WB_END 1409 1410 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1411 return CompileBroker::get_compilation_activity_mode(); 1412 WB_END 1413 1414 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1415 if (addr == 0) { 1416 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1417 "WB_GetCodeBlob: addr is null"); 1418 } 1419 ThreadToNativeFromVM ttn(thread); 1420 CodeBlobStub stub((CodeBlob*) addr); 1421 return codeBlob2objectArray(thread, env, &stub); 1422 WB_END 1423 1424 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1425 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1426 CHECK_JNI_EXCEPTION_(env, 0); 1427 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1428 return (jlong) mh->method_data(); 1429 WB_END 1430 1431 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1432 return (jlong) Thread::current()->stack_size(); 1433 WB_END 1434 1435 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1436 JavaThread* t = JavaThread::current(); 1437 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size(); 1438 WB_END 1439 1440 1441 int WhiteBox::array_bytes_to_length(size_t bytes) { 1442 return Array<u1>::bytes_to_length(bytes); 1443 } 1444 1445 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1446 if (size < 0) { 1447 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1448 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1449 } 1450 1451 oop class_loader_oop = JNIHandles::resolve(class_loader); 1452 ClassLoaderData* cld = class_loader_oop != NULL 1453 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1454 : ClassLoaderData::the_null_class_loader_data(); 1455 1456 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1457 1458 return (jlong)(uintptr_t)metadata; 1459 WB_END 1460 1461 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 1462 oop class_loader_oop = JNIHandles::resolve(class_loader); 1463 ClassLoaderData* cld = class_loader_oop != NULL 1464 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1465 : ClassLoaderData::the_null_class_loader_data(); 1466 1467 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 1468 WB_END 1469 1470 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1471 jstring version, jstring location, jobjectArray packages)) 1472 ResourceMark rm(THREAD); 1473 1474 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages)); 1475 objArrayHandle packages_h(THREAD, packages_oop); 1476 int num_packages = (packages_h == NULL ? 0 : packages_h->length()); 1477 1478 char** pkgs = NULL; 1479 if (num_packages > 0) { 1480 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages); 1481 for (int x = 0; x < num_packages; x++) { 1482 oop pkg_str = packages_h->obj_at(x); 1483 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) { 1484 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 1485 err_msg("Bad package name")); 1486 } 1487 pkgs[x] = java_lang_String::as_utf8_string(pkg_str); 1488 } 1489 } 1490 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK); 1491 WB_END 1492 1493 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1494 ResourceMark rm(THREAD); 1495 char* package_name = NULL; 1496 if (package != NULL) { 1497 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1498 } 1499 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK); 1500 WB_END 1501 1502 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1503 ResourceMark rm(THREAD); 1504 char* package_name = NULL; 1505 if (package != NULL) { 1506 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1507 } 1508 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK); 1509 WB_END 1510 1511 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1512 ResourceMark rm(THREAD); 1513 char* package_name = NULL; 1514 if (package != NULL) { 1515 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1516 } 1517 Modules::add_module_exports(module, package_name, NULL, CHECK); 1518 WB_END 1519 1520 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1521 Modules::add_reads_module(from_module, source_module, CHECK); 1522 WB_END 1523 1524 WB_ENTRY(void, WB_AddModulePackage(JNIEnv* env, jobject o, jclass module, jstring package)) 1525 ResourceMark rm(THREAD); 1526 char* package_name = NULL; 1527 if (package != NULL) { 1528 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1529 } 1530 Modules::add_module_package(module, package_name, CHECK); 1531 WB_END 1532 1533 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1534 if (inc < 0) { 1535 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1536 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1537 } 1538 1539 jlong max_size_t = (jlong) ((size_t) -1); 1540 if (inc > max_size_t) { 1541 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1542 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1543 } 1544 1545 size_t new_cap_until_GC = 0; 1546 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment()); 1547 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1548 if (!success) { 1549 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1550 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1551 "due to contention with another thread"); 1552 } 1553 return (jlong) new_cap_until_GC; 1554 WB_END 1555 1556 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1557 return (jlong) MetaspaceGC::capacity_until_GC(); 1558 WB_END 1559 1560 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb)) 1561 return MetaspaceGC::should_concurrent_collect(); 1562 WB_END 1563 1564 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb)) 1565 return (jlong)Metaspace::reserve_alignment(); 1566 WB_END 1567 1568 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue)) 1569 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ? 1570 Monitor::_safepoint_check_always : 1571 Monitor::_safepoint_check_never; 1572 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required), 1573 attemptedNoSafepointValue == JNI_TRUE); 1574 WB_END 1575 1576 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1577 oop obj_oop = JNIHandles::resolve(obj); 1578 return (jboolean) obj_oop->mark()->has_monitor(); 1579 WB_END 1580 1581 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1582 VM_ForceSafepoint force_safepoint_op; 1583 VMThread::execute(&force_safepoint_op); 1584 WB_END 1585 1586 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1587 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1588 return (jlong) ik->constants(); 1589 WB_END 1590 1591 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1592 return ConstantPool::CPCACHE_INDEX_TAG; 1593 WB_END 1594 1595 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1596 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1597 ConstantPool* cp = ik->constants(); 1598 if (cp->cache() == NULL) { 1599 return -1; 1600 } 1601 return cp->cache()->length(); 1602 WB_END 1603 1604 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1605 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1606 ConstantPool* cp = ik->constants(); 1607 if (cp->cache() == NULL) { 1608 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1609 } 1610 jint cpci = index; 1611 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1612 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1613 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1614 } 1615 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1616 return cpi; 1617 WB_END 1618 1619 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1620 return ConstantPool::encode_invokedynamic_index(index); 1621 WB_END 1622 1623 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1624 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1625 VMThread::execute(&clear_ics); 1626 WB_END 1627 1628 template <typename T> 1629 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1630 assert(value != NULL, "sanity"); 1631 if (method == NULL || name == NULL) { 1632 return false; 1633 } 1634 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1635 CHECK_JNI_EXCEPTION_(env, false); 1636 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1637 // can't be in VM when we call JNI 1638 ThreadToNativeFromVM ttnfv(thread); 1639 const char* flag_name = env->GetStringUTFChars(name, NULL); 1640 CHECK_JNI_EXCEPTION_(env, false); 1641 bool result = CompilerOracle::has_option_value(mh, flag_name, *value); 1642 env->ReleaseStringUTFChars(name, flag_name); 1643 return result; 1644 } 1645 1646 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1647 bool result; 1648 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1649 // can't be in VM when we call JNI 1650 ThreadToNativeFromVM ttnfv(thread); 1651 return booleanBox(thread, env, result); 1652 } 1653 return NULL; 1654 WB_END 1655 1656 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1657 intx result; 1658 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1659 // can't be in VM when we call JNI 1660 ThreadToNativeFromVM ttnfv(thread); 1661 return longBox(thread, env, result); 1662 } 1663 return NULL; 1664 WB_END 1665 1666 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1667 uintx result; 1668 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1669 // can't be in VM when we call JNI 1670 ThreadToNativeFromVM ttnfv(thread); 1671 return longBox(thread, env, result); 1672 } 1673 return NULL; 1674 WB_END 1675 1676 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1677 double result; 1678 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1679 // can't be in VM when we call JNI 1680 ThreadToNativeFromVM ttnfv(thread); 1681 return doubleBox(thread, env, result); 1682 } 1683 return NULL; 1684 WB_END 1685 1686 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1687 ccstr ccstrResult; 1688 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 1689 // can't be in VM when we call JNI 1690 ThreadToNativeFromVM ttnfv(thread); 1691 jstring result = env->NewStringUTF(ccstrResult); 1692 CHECK_JNI_EXCEPTION_(env, NULL); 1693 return result; 1694 } 1695 return NULL; 1696 WB_END 1697 1698 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 1699 oop obj_oop = JNIHandles::resolve(obj); 1700 return MetaspaceShared::is_in_shared_space((void*)obj_oop); 1701 WB_END 1702 1703 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 1704 return (jboolean)MetaspaceShared::is_in_shared_space(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1705 WB_END 1706 1707 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env)) 1708 return StringTable::shared_string_ignored(); 1709 WB_END 1710 1711 //Some convenience methods to deal with objects from java 1712 int WhiteBox::offset_for_field(const char* field_name, oop object, 1713 Symbol* signature_symbol) { 1714 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 1715 Thread* THREAD = Thread::current(); 1716 1717 //Get the class of our object 1718 Klass* arg_klass = object->klass(); 1719 //Turn it into an instance-klass 1720 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 1721 1722 //Create symbols to look for in the class 1723 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), 1724 THREAD); 1725 1726 //To be filled in with an offset of the field we're looking for 1727 fieldDescriptor fd; 1728 1729 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 1730 if (res == NULL) { 1731 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 1732 name_symbol->as_C_string()); 1733 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 1734 } 1735 1736 //fetch the field at the offset we've found 1737 int dest_offset = fd.offset(); 1738 1739 return dest_offset; 1740 } 1741 1742 1743 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 1744 int offset = offset_for_field(field_name, object, 1745 vmSymbols::string_signature()); 1746 oop string = object->obj_field(offset); 1747 if (string == NULL) { 1748 return NULL; 1749 } 1750 const char* ret = java_lang_String::as_utf8_string(string); 1751 return ret; 1752 } 1753 1754 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 1755 int offset = 1756 offset_for_field(field_name, object, vmSymbols::bool_signature()); 1757 bool ret = (object->bool_field(offset) == JNI_TRUE); 1758 return ret; 1759 } 1760 1761 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 1762 ResourceMark rm; 1763 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1764 1765 // one by one registration natives for exception catching 1766 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 1767 CHECK_JNI_EXCEPTION(env); 1768 for (int i = 0, n = method_count; i < n; ++i) { 1769 // Skip dummy entries 1770 if (method_array[i].fnPtr == NULL) continue; 1771 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 1772 jthrowable throwable_obj = env->ExceptionOccurred(); 1773 if (throwable_obj != NULL) { 1774 env->ExceptionClear(); 1775 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 1776 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 1777 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 1778 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 1779 method_array[i].name, method_array[i].signature); 1780 } 1781 } else { 1782 // Registration failed unexpectedly. 1783 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 1784 method_array[i].name, method_array[i].signature); 1785 env->UnregisterNatives(wbclass); 1786 break; 1787 } 1788 } 1789 } 1790 } 1791 1792 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 1793 // can't be in VM when we call JNI 1794 ThreadToNativeFromVM ttnfv(thread); 1795 const char* dir = env->GetStringUTFChars(compDirect, NULL); 1796 CHECK_JNI_EXCEPTION_(env, 0); 1797 int ret; 1798 { 1799 ThreadInVMfromNative ttvfn(thread); // back to VM 1800 ret = DirectivesParser::parse_string(dir, tty); 1801 } 1802 env->ReleaseStringUTFChars(compDirect, dir); 1803 // -1 for error parsing directive. Return 0 as number of directives added. 1804 if (ret == -1) { 1805 ret = 0; 1806 } 1807 return (jint) ret; 1808 WB_END 1809 1810 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 1811 DirectivesStack::pop(count); 1812 WB_END 1813 1814 #define CC (char*) 1815 1816 static JNINativeMethod methods[] = { 1817 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 1818 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 1819 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 1820 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 1821 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 1822 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 1823 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 1824 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 1825 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 1826 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, 1827 {CC"parseCommandLine0", 1828 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 1829 (void*) &WB_ParseCommandLine 1830 }, 1831 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1832 (void*)&WB_AddToBootstrapClassLoaderSearch}, 1833 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1834 (void*)&WB_AddToSystemClassLoaderSearch}, 1835 {CC"getCompressedOopsMaxHeapSize", CC"()J", 1836 (void*)&WB_GetCompressedOopsMaxHeapSize}, 1837 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 1838 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 1839 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 1840 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 1841 #if INCLUDE_ALL_GCS 1842 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 1843 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 1844 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 1845 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 1846 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 1847 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 1848 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 1849 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 1850 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 1851 (void*)&WB_G1AuxiliaryMemoryUsage }, 1852 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 1853 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 1854 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 1855 #endif // INCLUDE_ALL_GCS 1856 #if INCLUDE_NMT 1857 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 1858 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 1859 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 1860 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 1861 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 1862 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 1863 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 1864 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 1865 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 1866 #endif // INCLUDE_NMT 1867 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 1868 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 1869 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 1870 (void*)&WB_DeoptimizeMethod }, 1871 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 1872 (void*)&WB_IsMethodCompiled }, 1873 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 1874 (void*)&WB_IsMethodCompilable}, 1875 {CC"isMethodQueuedForCompilation0", 1876 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 1877 {CC"isIntrinsicAvailable0", 1878 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 1879 (void*)&WB_IsIntrinsicAvailable}, 1880 {CC"makeMethodNotCompilable0", 1881 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 1882 {CC"testSetDontInlineMethod0", 1883 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 1884 {CC"getMethodCompilationLevel0", 1885 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 1886 {CC"getMethodEntryBci0", 1887 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 1888 {CC"getCompileQueueSize", 1889 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 1890 {CC"testSetForceInlineMethod0", 1891 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 1892 {CC"enqueueMethodForCompilation0", 1893 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 1894 {CC"enqueueInitializerForCompilation0", 1895 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 1896 {CC"clearMethodState0", 1897 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 1898 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 1899 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 1900 {CC"matchesMethod", 1901 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 1902 (void*)&WB_MatchesMethod}, 1903 {CC"matchesInline", 1904 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 1905 (void*)&WB_MatchesInline}, 1906 {CC"shouldPrintAssembly", 1907 CC"(Ljava/lang/reflect/Executable;I)Z", 1908 (void*)&WB_ShouldPrintAssembly}, 1909 1910 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 1911 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 1912 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 1913 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 1914 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 1915 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 1916 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 1917 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 1918 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 1919 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 1920 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 1921 (void*)&WB_SetStringVMFlag}, 1922 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 1923 (void*)&WB_GetBooleanVMFlag}, 1924 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1925 (void*)&WB_GetIntVMFlag}, 1926 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1927 (void*)&WB_GetUintVMFlag}, 1928 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1929 (void*)&WB_GetIntxVMFlag}, 1930 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1931 (void*)&WB_GetUintxVMFlag}, 1932 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1933 (void*)&WB_GetUint64VMFlag}, 1934 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1935 (void*)&WB_GetSizeTVMFlag}, 1936 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 1937 (void*)&WB_GetDoubleVMFlag}, 1938 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 1939 (void*)&WB_GetStringVMFlag}, 1940 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 1941 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 1942 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 1943 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 1944 {CC"allocateMetaspace", 1945 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 1946 {CC"freeMetaspace", 1947 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 1948 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 1949 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 1950 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect }, 1951 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment }, 1952 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 1953 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 1954 (void*)&WB_GetNMethod }, 1955 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 1956 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 1957 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 1958 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 1959 {CC"getCompilationActivityMode", 1960 CC"()I", (void*)&WB_GetCompilationActivityMode}, 1961 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 1962 (void*)&WB_GetMethodData }, 1963 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 1964 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 1965 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 1966 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 1967 (void*)&WB_DefineModule }, 1968 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 1969 (void*)&WB_AddModuleExports }, 1970 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 1971 (void*)&WB_AddReadsModule }, 1972 {CC"AddModulePackage", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 1973 (void*)&WB_AddModulePackage }, 1974 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 1975 (void*)&WB_AddModuleExportsToAllUnnamed }, 1976 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 1977 (void*)&WB_AddModuleExportsToAll }, 1978 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls }, 1979 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 1980 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 1981 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 1982 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 1983 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 1984 {CC"remapInstructionOperandFromCPCache0", 1985 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 1986 {CC"encodeConstantPoolIndyIndex0", 1987 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 1988 {CC"getMethodBooleanOption", 1989 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 1990 (void*)&WB_GetMethodBooleaneOption}, 1991 {CC"getMethodIntxOption", 1992 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 1993 (void*)&WB_GetMethodIntxOption}, 1994 {CC"getMethodUintxOption", 1995 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 1996 (void*)&WB_GetMethodUintxOption}, 1997 {CC"getMethodDoubleOption", 1998 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 1999 (void*)&WB_GetMethodDoubleOption}, 2000 {CC"getMethodStringOption", 2001 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2002 (void*)&WB_GetMethodStringOption}, 2003 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 2004 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2005 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored }, 2006 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2007 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2008 (void*)&WB_AddCompilerDirective }, 2009 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2010 {CC"currentGC", CC"()I", (void*)&WB_CurrentGC}, 2011 {CC"allSupportedGC", CC"()I", (void*)&WB_AllSupportedGC}, 2012 {CC"gcSelectedByErgo", CC"()Z", (void*)&WB_GCSelectedByErgo}, 2013 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl}, 2014 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;", 2015 (void*)&WB_GetConcurrentGCPhases}, 2016 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z", 2017 (void*)&WB_RequestConcurrentGCPhase}, 2018 }; 2019 2020 #undef CC 2021 2022 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2023 { 2024 if (WhiteBoxAPI) { 2025 // Make sure that wbclass is loaded by the null classloader 2026 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass()); 2027 Handle loader(THREAD, ik->class_loader()); 2028 if (loader.is_null()) { 2029 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2030 WhiteBox::register_extended(env, wbclass, thread); 2031 WhiteBox::set_used(); 2032 } 2033 } 2034 } 2035 JVM_END