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/handshake.hpp" 53 #include "runtime/interfaceSupport.hpp" 54 #include "runtime/javaCalls.hpp" 55 #include "runtime/os.hpp" 56 #include "runtime/sweeper.hpp" 57 #include "runtime/thread.hpp" 58 #include "runtime/threadSMR.hpp" 59 #include "runtime/vm_version.hpp" 60 #include "utilities/align.hpp" 61 #include "utilities/debug.hpp" 62 #include "utilities/exceptions.hpp" 63 #include "utilities/macros.hpp" 64 #if INCLUDE_ALL_GCS 65 #include "gc/g1/concurrentMarkThread.hpp" 66 #include "gc/g1/g1CollectedHeap.inline.hpp" 67 #include "gc/g1/g1ConcurrentMark.hpp" 68 #include "gc/g1/heapRegionRemSet.hpp" 69 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 70 #include "gc/parallel/adjoiningGenerations.hpp" 71 #endif // INCLUDE_ALL_GCS 72 #if INCLUDE_NMT 73 #include "services/mallocSiteTable.hpp" 74 #include "services/memTracker.hpp" 75 #include "utilities/nativeCallStack.hpp" 76 #endif // INCLUDE_NMT 77 78 #ifdef LINUX 79 #include "utilities/elfFile.hpp" 80 #include "osContainer_linux.hpp" 81 #endif 82 83 #define SIZE_T_MAX_VALUE ((size_t) -1) 84 85 bool WhiteBox::_used = false; 86 volatile bool WhiteBox::compilation_locked = false; 87 88 class VM_WhiteBoxOperation : public VM_Operation { 89 public: 90 VM_WhiteBoxOperation() { } 91 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 92 bool allow_nested_vm_operations() const { return true; } 93 }; 94 95 96 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 97 return (jlong)(void*)JNIHandles::resolve(obj); 98 WB_END 99 100 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 101 return heapOopSize; 102 WB_END 103 104 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 105 return os::vm_page_size(); 106 WB_END 107 108 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 109 return os::vm_allocation_granularity(); 110 WB_END 111 112 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 113 return os::large_page_size(); 114 WB_END 115 116 class WBIsKlassAliveClosure : public KlassClosure { 117 Symbol* _name; 118 bool _found; 119 public: 120 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} 121 122 void do_klass(Klass* k) { 123 if (_found) return; 124 Symbol* ksym = k->name(); 125 if (ksym->fast_compare(_name) == 0) { 126 _found = true; 127 } 128 } 129 130 bool found() const { 131 return _found; 132 } 133 }; 134 135 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) 136 oop h_name = JNIHandles::resolve(name); 137 if (h_name == NULL) return false; 138 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false); 139 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 140 141 WBIsKlassAliveClosure closure(sym); 142 ClassLoaderDataGraph::classes_do(&closure); 143 144 return closure.found(); 145 WB_END 146 147 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 148 #if INCLUDE_JVMTI 149 ResourceMark rm; 150 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 151 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 152 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 153 assert(err == JVMTI_ERROR_NONE, "must not fail"); 154 #endif 155 } 156 WB_END 157 158 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 159 #if INCLUDE_JVMTI 160 ResourceMark rm; 161 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 162 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 163 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 164 assert(err == JVMTI_ERROR_NONE, "must not fail"); 165 #endif 166 } 167 WB_END 168 169 170 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 171 return (jlong)Arguments::max_heap_for_compressed_oops(); 172 } 173 WB_END 174 175 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 176 CollectorPolicy * p = Universe::heap()->collector_policy(); 177 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " 178 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 179 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(), 180 p->space_alignment(), p->heap_alignment()); 181 } 182 WB_END 183 184 #ifndef PRODUCT 185 // Forward declaration 186 void TestReservedSpace_test(); 187 void TestReserveMemorySpecial_test(); 188 void TestVirtualSpace_test(); 189 void TestMetaspaceAux_test(); 190 #endif 191 192 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) 193 #ifndef PRODUCT 194 TestReservedSpace_test(); 195 TestReserveMemorySpecial_test(); 196 TestVirtualSpace_test(); 197 TestMetaspaceAux_test(); 198 #endif 199 WB_END 200 201 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 202 size_t granularity = os::vm_allocation_granularity(); 203 ReservedHeapSpace rhs(100 * granularity, granularity, false); 204 VirtualSpace vs; 205 vs.initialize(rhs, 50 * granularity); 206 207 // Check if constraints are complied 208 if (!( UseCompressedOops && rhs.base() != NULL && 209 Universe::narrow_oop_base() != NULL && 210 Universe::narrow_oop_use_implicit_null_checks() )) { 211 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 212 "\tUseCompressedOops is %d\n" 213 "\trhs.base() is " PTR_FORMAT "\n" 214 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n" 215 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d", 216 UseCompressedOops, 217 p2i(rhs.base()), 218 p2i(Universe::narrow_oop_base()), 219 Universe::narrow_oop_use_implicit_null_checks()); 220 return; 221 } 222 tty->print_cr("Reading from no access area... "); 223 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 224 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 225 WB_END 226 227 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 228 size_t magnitude, size_t iterations) { 229 size_t granularity = os::vm_allocation_granularity(); 230 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false); 231 VirtualSpace vs; 232 if (!vs.initialize(rhs, 0)) { 233 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 234 return 3; 235 } 236 237 int seed = os::random(); 238 tty->print_cr("Random seed is %d", seed); 239 os::init_random(seed); 240 241 for (size_t i = 0; i < iterations; i++) { 242 243 // Whether we will shrink or grow 244 bool shrink = os::random() % 2L == 0; 245 246 // Get random delta to resize virtual space 247 size_t delta = (size_t)os::random() % magnitude; 248 249 // If we are about to shrink virtual space below zero, then expand instead 250 if (shrink && vs.committed_size() < delta) { 251 shrink = false; 252 } 253 254 // Resizing by delta 255 if (shrink) { 256 vs.shrink_by(delta); 257 } else { 258 // If expanding fails expand_by will silently return false 259 vs.expand_by(delta, true); 260 } 261 } 262 return 0; 263 } 264 265 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 266 jlong reserved_space_size, jlong magnitude, jlong iterations)) 267 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 268 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 269 iterations); 270 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 271 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 272 return 1; 273 } 274 275 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 276 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 277 if (sizeof(size_t) < sizeof(jlong)) { 278 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; 279 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 280 || iterations > size_t_max_value) { 281 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 282 return 2; 283 } 284 } 285 286 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 287 (size_t) magnitude, (size_t) iterations); 288 WB_END 289 290 static const jint serial_code = 1; 291 static const jint parallel_code = 2; 292 static const jint cms_code = 4; 293 static const jint g1_code = 8; 294 295 WB_ENTRY(jint, WB_CurrentGC(JNIEnv* env, jobject o, jobject obj)) 296 if (UseSerialGC) { 297 return serial_code; 298 } else if (UseParallelGC || UseParallelOldGC) { 299 return parallel_code; 300 } if (UseConcMarkSweepGC) { 301 return cms_code; 302 } else if (UseG1GC) { 303 return g1_code; 304 } 305 ShouldNotReachHere(); 306 return 0; 307 WB_END 308 309 WB_ENTRY(jint, WB_AllSupportedGC(JNIEnv* env, jobject o, jobject obj)) 310 #if INCLUDE_ALL_GCS 311 return serial_code | parallel_code | cms_code | g1_code; 312 #else 313 return serial_code; 314 #endif // INCLUDE_ALL_GCS 315 WB_END 316 317 WB_ENTRY(jboolean, WB_GCSelectedByErgo(JNIEnv* env, jobject o, jobject obj)) 318 if (UseSerialGC) { 319 return FLAG_IS_ERGO(UseSerialGC); 320 } else if (UseParallelGC) { 321 return FLAG_IS_ERGO(UseParallelGC); 322 } else if (UseParallelOldGC) { 323 return FLAG_IS_ERGO(UseParallelOldGC); 324 } else if (UseConcMarkSweepGC) { 325 return FLAG_IS_ERGO(UseConcMarkSweepGC); 326 } else if (UseG1GC) { 327 return FLAG_IS_ERGO(UseG1GC); 328 } 329 ShouldNotReachHere(); 330 return false; 331 WB_END 332 333 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 334 oop p = JNIHandles::resolve(obj); 335 #if INCLUDE_ALL_GCS 336 if (UseG1GC) { 337 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 338 const HeapRegion* hr = g1->heap_region_containing(p); 339 if (hr == NULL) { 340 return false; 341 } 342 return !(hr->is_young()); 343 } else if (UseParallelGC) { 344 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 345 return !psh->is_in_young(p); 346 } 347 #endif // INCLUDE_ALL_GCS 348 GenCollectedHeap* gch = GenCollectedHeap::heap(); 349 return !gch->is_in_young(p); 350 WB_END 351 352 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 353 oop p = JNIHandles::resolve(obj); 354 return p->size() * HeapWordSize; 355 WB_END 356 357 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 358 size_t alignment = Universe::heap()->collector_policy()->space_alignment(); 359 return (jlong)alignment; 360 WB_END 361 362 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 363 size_t alignment = Universe::heap()->collector_policy()->heap_alignment(); 364 return (jlong)alignment; 365 WB_END 366 367 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o)) 368 return Universe::heap()->supports_concurrent_phase_control(); 369 WB_END 370 371 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o)) 372 const char* const* phases = Universe::heap()->concurrent_phases(); 373 jint nphases = 0; 374 for ( ; phases[nphases] != NULL; ++nphases) ; 375 376 ResourceMark rm(thread); 377 ThreadToNativeFromVM ttn(thread); 378 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 379 CHECK_JNI_EXCEPTION_(env, NULL); 380 381 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL); 382 CHECK_JNI_EXCEPTION_(env, NULL); 383 384 // If push fails, return with pending exception. 385 if (env->PushLocalFrame(nphases) < 0) return NULL; 386 for (jint i = 0; i < nphases; ++i) { 387 jstring phase = env->NewStringUTF(phases[i]); 388 CHECK_JNI_EXCEPTION_(env, NULL); 389 env->SetObjectArrayElement(result, i, phase); 390 CHECK_JNI_EXCEPTION_(env, NULL); 391 } 392 env->PopLocalFrame(NULL); 393 394 return result; 395 WB_END 396 397 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name)) 398 Handle h_name(THREAD, JNIHandles::resolve(name)); 399 ResourceMark rm; 400 const char* c_name = java_lang_String::as_utf8_string(h_name()); 401 return Universe::heap()->request_concurrent_phase(c_name); 402 WB_END 403 404 #if INCLUDE_ALL_GCS 405 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 406 if (UseG1GC) { 407 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 408 oop result = JNIHandles::resolve(obj); 409 const HeapRegion* hr = g1->heap_region_containing(result); 410 return hr->is_humongous(); 411 } 412 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 413 WB_END 414 415 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 416 if (UseG1GC) { 417 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 418 const HeapRegion* hr = g1->heap_region_containing((void*) addr); 419 return hr->is_humongous(); 420 } 421 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 422 WB_END 423 424 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 425 if (UseG1GC) { 426 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 427 const HeapRegion* hr = g1->heap_region_containing((void*) addr); 428 return hr->is_free(); 429 } 430 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 431 WB_END 432 433 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 434 if (UseG1GC) { 435 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 436 size_t nr = g1->max_regions(); 437 return (jlong)nr; 438 } 439 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 440 WB_END 441 442 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 443 if (UseG1GC) { 444 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 445 size_t nr = g1->num_free_regions(); 446 return (jlong)nr; 447 } 448 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 449 WB_END 450 451 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 452 if (UseG1GC) { 453 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 454 return g1h->concurrent_mark()->cm_thread()->during_cycle(); 455 } 456 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 457 WB_END 458 459 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o)) 460 if (UseG1GC) { 461 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 462 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) { 463 g1h->collect(GCCause::_wb_conc_mark); 464 return true; 465 } 466 return false; 467 } 468 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled"); 469 WB_END 470 471 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 472 if (UseG1GC) { 473 return (jint)HeapRegion::GrainBytes; 474 } 475 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 476 WB_END 477 478 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 479 #if INCLUDE_ALL_GCS 480 if (UseParallelGC) { 481 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment(); 482 } 483 #endif // INCLUDE_ALL_GCS 484 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 485 WB_END 486 487 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 488 #if INCLUDE_ALL_GCS 489 if (UseParallelGC) { 490 return ParallelScavengeHeap::heap()->generation_alignment(); 491 } 492 #endif // INCLUDE_ALL_GCS 493 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 494 WB_END 495 496 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 497 #if INCLUDE_ALL_GCS 498 if (UseG1GC) { 499 ResourceMark rm(THREAD); 500 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 501 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 502 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 503 return JNIHandles::make_local(env, h()); 504 } 505 #endif // INCLUDE_ALL_GCS 506 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 507 WB_END 508 509 class OldRegionsLivenessClosure: public HeapRegionClosure { 510 511 private: 512 const int _liveness; 513 size_t _total_count; 514 size_t _total_memory; 515 size_t _total_memory_to_free; 516 517 public: 518 OldRegionsLivenessClosure(int liveness) : 519 _liveness(liveness), 520 _total_count(0), 521 _total_memory(0), 522 _total_memory_to_free(0) { } 523 524 size_t total_count() { return _total_count; } 525 size_t total_memory() { return _total_memory; } 526 size_t total_memory_to_free() { return _total_memory_to_free; } 527 528 bool doHeapRegion(HeapRegion* r) { 529 if (r->is_old()) { 530 size_t prev_live = r->marked_bytes(); 531 size_t live = r->live_bytes(); 532 size_t size = r->used(); 533 size_t reg_size = HeapRegion::GrainBytes; 534 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 535 _total_memory += size; 536 ++_total_count; 537 if (size == reg_size) { 538 // we don't include non-full regions since they are unlikely included in mixed gc 539 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 540 _total_memory_to_free += size - prev_live; 541 } 542 } 543 } 544 return false; 545 } 546 }; 547 548 549 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 550 if (!UseG1GC) { 551 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 552 } 553 if (liveness < 0) { 554 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 555 } 556 557 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 558 OldRegionsLivenessClosure rli(liveness); 559 g1h->heap_region_iterate(&rli); 560 561 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 562 result->long_at_put(0, rli.total_count()); 563 result->long_at_put(1, rli.total_memory()); 564 result->long_at_put(2, rli.total_memory_to_free()); 565 return (jlongArray) JNIHandles::make_local(env, result); 566 WB_END 567 568 #endif // INCLUDE_ALL_GCS 569 570 #if INCLUDE_NMT 571 // Alloc memory using the test memory type so that we can use that to see if 572 // NMT picks it up correctly 573 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 574 jlong addr = 0; 575 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 576 return addr; 577 WB_END 578 579 // Alloc memory with pseudo call stack. The test can create psudo malloc 580 // allocation site to stress the malloc tracking. 581 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 582 address pc = (address)(size_t)pseudo_stack; 583 NativeCallStack stack(&pc, 1); 584 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 585 WB_END 586 587 // Free the memory allocated by NMTAllocTest 588 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 589 os::free((void*)(uintptr_t)mem); 590 WB_END 591 592 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 593 jlong addr = 0; 594 595 addr = (jlong)(uintptr_t)os::reserve_memory(size); 596 MemTracker::record_virtual_memory_type((address)addr, mtTest); 597 598 return addr; 599 WB_END 600 601 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 602 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 603 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 604 WB_END 605 606 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 607 os::uncommit_memory((char *)(uintptr_t)addr, size); 608 WB_END 609 610 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 611 os::release_memory((char *)(uintptr_t)addr, size); 612 WB_END 613 614 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env)) 615 // Test that we can downgrade NMT levels but not upgrade them. 616 if (MemTracker::tracking_level() == NMT_off) { 617 MemTracker::transition_to(NMT_off); 618 return MemTracker::tracking_level() == NMT_off; 619 } else { 620 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking"); 621 MemTracker::transition_to(NMT_summary); 622 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now"); 623 624 // Can't go to detail once NMT is set to summary. 625 MemTracker::transition_to(NMT_detail); 626 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now"); 627 628 // Shutdown sets tracking level to minimal. 629 MemTracker::shutdown(); 630 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); 631 632 // Once the tracking level is minimal, we cannot increase to summary. 633 // The code ignores this request instead of asserting because if the malloc site 634 // table overflows in another thread, it tries to change the code to summary. 635 MemTracker::transition_to(NMT_summary); 636 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 637 638 // Really can never go up to detail, verify that the code would never do this. 639 MemTracker::transition_to(NMT_detail); 640 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 641 return MemTracker::tracking_level() == NMT_minimal; 642 } 643 WB_END 644 645 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 646 int hash_size = MallocSiteTable::hash_buckets(); 647 assert(hash_size > 0, "NMT hash_size should be > 0"); 648 return (jint)hash_size; 649 WB_END 650 #endif // INCLUDE_NMT 651 652 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 653 assert(method != NULL, "method should not be null"); 654 ThreadToNativeFromVM ttn(thread); 655 return env->FromReflectedMethod(method); 656 } 657 658 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 659 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 660 private: 661 int _result; 662 const bool _make_not_entrant; 663 public: 664 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 665 _result(0), _make_not_entrant(make_not_entrant) { } 666 int result() const { return _result; } 667 668 void doit() { 669 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 670 if (t->has_last_Java_frame()) { 671 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) { 672 frame* f = fst.current(); 673 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 674 RegisterMap* reg_map = fst.register_map(); 675 Deoptimization::deoptimize(t, *f, reg_map); 676 if (_make_not_entrant) { 677 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 678 assert(cm != NULL, "sanity check"); 679 cm->make_not_entrant(); 680 } 681 ++_result; 682 } 683 } 684 } 685 } 686 } 687 }; 688 689 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 690 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 691 VMThread::execute(&op); 692 return op.result(); 693 WB_END 694 695 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 696 MutexLockerEx mu(Compile_lock); 697 CodeCache::mark_all_nmethods_for_deoptimization(); 698 VM_Deoptimize op; 699 VMThread::execute(&op); 700 WB_END 701 702 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 703 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 704 int result = 0; 705 CHECK_JNI_EXCEPTION_(env, result); 706 MutexLockerEx mu(Compile_lock); 707 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 708 if (is_osr) { 709 result += mh->mark_osr_nmethods(); 710 } else if (mh->code() != NULL) { 711 mh->code()->mark_for_deoptimization(); 712 ++result; 713 } 714 result += CodeCache::mark_for_deoptimization(mh()); 715 if (result > 0) { 716 VM_Deoptimize op; 717 VMThread::execute(&op); 718 } 719 return result; 720 WB_END 721 722 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 723 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 724 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 725 MutexLockerEx mu(Compile_lock); 726 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 727 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 728 if (code == NULL) { 729 return JNI_FALSE; 730 } 731 return (code->is_alive() && !code->is_marked_for_deoptimization()); 732 WB_END 733 734 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 735 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 736 return false; 737 } 738 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 739 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 740 MutexLockerEx mu(Compile_lock); 741 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 742 if (is_osr) { 743 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); 744 } else { 745 return CompilationPolicy::can_be_compiled(mh, comp_level); 746 } 747 WB_END 748 749 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 750 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 751 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 752 MutexLockerEx mu(Compile_lock); 753 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 754 return mh->queued_for_compilation(); 755 WB_END 756 757 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 758 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 759 return false; // Intrinsic is not available on a non-existent compilation level. 760 } 761 jmethodID method_id, compilation_context_id; 762 method_id = reflected_method_to_jmid(thread, env, method); 763 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 764 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 765 766 DirectiveSet* directive; 767 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 768 assert(comp != NULL, "compiler not available"); 769 if (compilation_context != NULL) { 770 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 771 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 772 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 773 directive = DirectivesStack::getMatchingDirective(cch, comp); 774 } else { 775 // Calling with NULL matches default directive 776 directive = DirectivesStack::getDefaultDirective(comp); 777 } 778 bool result = comp->is_intrinsic_available(mh, directive); 779 DirectivesStack::release(directive); 780 return result; 781 WB_END 782 783 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 784 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 785 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 786 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 787 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 788 return (code != NULL ? code->comp_level() : CompLevel_none); 789 WB_END 790 791 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 792 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 793 CHECK_JNI_EXCEPTION(env); 794 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 795 if (is_osr) { 796 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox"); 797 } else { 798 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); 799 } 800 WB_END 801 802 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 803 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 804 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 805 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 806 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 807 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 808 WB_END 809 810 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 811 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 812 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 813 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 814 bool result = mh->dont_inline(); 815 mh->set_dont_inline(value == JNI_TRUE); 816 return result; 817 WB_END 818 819 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 820 if (comp_level == CompLevel_any) { 821 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 822 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 823 } else { 824 return CompileBroker::queue_size(comp_level); 825 } 826 WB_END 827 828 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 829 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 830 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 831 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 832 bool result = mh->force_inline(); 833 mh->set_force_inline(value == JNI_TRUE); 834 return result; 835 WB_END 836 837 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) { 838 // Screen for unavailable/bad comp level or null method 839 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) || 840 CompileBroker::compiler(comp_level) == NULL) { 841 return false; 842 } 843 methodHandle mh(THREAD, method); 844 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD); 845 MutexLockerEx mu(Compile_lock); 846 return (mh->queued_for_compilation() || nm != NULL); 847 } 848 849 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 850 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 851 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 852 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 853 WB_END 854 855 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 856 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 857 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD); 858 WB_END 859 860 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 861 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 862 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 863 864 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 865 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 866 bool result = directive->PrintAssemblyOption; 867 DirectivesStack::release(directive); 868 869 return result; 870 WB_END 871 872 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 873 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 874 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 875 876 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 877 878 ResourceMark rm; 879 const char* error_msg = NULL; 880 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 881 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 882 883 if (m == NULL) { 884 assert(error_msg != NULL, "Always have an error message"); 885 tty->print_cr("Got error: %s", error_msg); 886 return -1; // Pattern failed 887 } 888 889 // Pattern works - now check if it matches 890 int result; 891 if (m->match(mh, InlineMatcher::force_inline)) { 892 result = 2; // Force inline match 893 } else if (m->match(mh, InlineMatcher::dont_inline)) { 894 result = 1; // Dont inline match 895 } else { 896 result = 0; // No match 897 } 898 delete m; 899 return result; 900 WB_END 901 902 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 903 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 904 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 905 906 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 907 908 ResourceMark rm; 909 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 910 911 const char* error_msg = NULL; 912 913 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg); 914 if (m == NULL) { 915 assert(error_msg != NULL, "Must have error_msg"); 916 tty->print_cr("Got error: %s", error_msg); 917 return -1; 918 } 919 920 // Pattern works - now check if it matches 921 int result = m->matches(mh); 922 delete m; 923 assert(result == 0 || result == 1, "Result out of range"); 924 return result; 925 WB_END 926 927 static AlwaysFalseClosure always_false; 928 929 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 930 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 931 CHECK_JNI_EXCEPTION(env); 932 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 933 MutexLockerEx mu(Compile_lock); 934 MethodData* mdo = mh->method_data(); 935 MethodCounters* mcs = mh->method_counters(); 936 937 if (mdo != NULL) { 938 mdo->init(); 939 ResourceMark rm; 940 int arg_count = mdo->method()->size_of_parameters(); 941 for (int i = 0; i < arg_count; i++) { 942 mdo->set_arg_modified(i, 0); 943 } 944 MutexLockerEx mu(mdo->extra_data_lock()); 945 mdo->clean_method_data(&always_false); 946 } 947 948 mh->clear_not_c1_compilable(); 949 mh->clear_not_c2_compilable(); 950 mh->clear_not_c2_osr_compilable(); 951 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 952 if (mcs != NULL) { 953 mcs->backedge_counter()->init(); 954 mcs->invocation_counter()->init(); 955 mcs->set_interpreter_invocation_count(0); 956 mcs->set_interpreter_throwout_count(0); 957 958 #ifdef TIERED 959 mcs->set_rate(0.0F); 960 mh->set_prev_event_count(0); 961 mh->set_prev_time(0); 962 #endif 963 } 964 WB_END 965 966 template <typename T> 967 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) { 968 if (name == NULL) { 969 return false; 970 } 971 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 972 const char* flag_name = env->GetStringUTFChars(name, NULL); 973 CHECK_JNI_EXCEPTION_(env, false); 974 Flag::Error result = (*TAt)(flag_name, value, true, true); 975 env->ReleaseStringUTFChars(name, flag_name); 976 return (result == Flag::SUCCESS); 977 } 978 979 template <typename T> 980 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) { 981 if (name == NULL) { 982 return false; 983 } 984 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 985 const char* flag_name = env->GetStringUTFChars(name, NULL); 986 CHECK_JNI_EXCEPTION_(env, false); 987 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL); 988 env->ReleaseStringUTFChars(name, flag_name); 989 return (result == Flag::SUCCESS); 990 } 991 992 template <typename T> 993 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 994 ResourceMark rm(thread); 995 jclass clazz = env->FindClass(name->as_C_string()); 996 CHECK_JNI_EXCEPTION_(env, NULL); 997 jmethodID methodID = env->GetStaticMethodID(clazz, 998 vmSymbols::valueOf_name()->as_C_string(), 999 sig->as_C_string()); 1000 CHECK_JNI_EXCEPTION_(env, NULL); 1001 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1002 CHECK_JNI_EXCEPTION_(env, NULL); 1003 return result; 1004 } 1005 1006 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1007 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1008 } 1009 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1010 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1011 } 1012 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1013 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1014 } 1015 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1016 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1017 }*/ 1018 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1019 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1020 } 1021 1022 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1023 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1024 const char* flag_name = env->GetStringUTFChars(name, NULL); 1025 CHECK_JNI_EXCEPTION_(env, NULL); 1026 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true); 1027 env->ReleaseStringUTFChars(name, flag_name); 1028 return result; 1029 } 1030 1031 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1032 Flag* flag = getVMFlag(thread, env, name); 1033 return (flag != NULL) && flag->is_constant_in_binary(); 1034 WB_END 1035 1036 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1037 Flag* flag = getVMFlag(thread, env, name); 1038 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 1039 WB_END 1040 1041 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1042 bool result; 1043 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) { 1044 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1045 return booleanBox(thread, env, result); 1046 } 1047 return NULL; 1048 WB_END 1049 1050 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1051 int result; 1052 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) { 1053 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1054 return longBox(thread, env, result); 1055 } 1056 return NULL; 1057 WB_END 1058 1059 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1060 uint result; 1061 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) { 1062 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1063 return longBox(thread, env, result); 1064 } 1065 return NULL; 1066 WB_END 1067 1068 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1069 intx result; 1070 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) { 1071 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1072 return longBox(thread, env, result); 1073 } 1074 return NULL; 1075 WB_END 1076 1077 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1078 uintx result; 1079 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) { 1080 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1081 return longBox(thread, env, result); 1082 } 1083 return NULL; 1084 WB_END 1085 1086 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1087 uint64_t result; 1088 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) { 1089 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1090 return longBox(thread, env, result); 1091 } 1092 return NULL; 1093 WB_END 1094 1095 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1096 uintx result; 1097 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) { 1098 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1099 return longBox(thread, env, result); 1100 } 1101 return NULL; 1102 WB_END 1103 1104 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1105 double result; 1106 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) { 1107 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1108 return doubleBox(thread, env, result); 1109 } 1110 return NULL; 1111 WB_END 1112 1113 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1114 ccstr ccstrResult; 1115 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) { 1116 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1117 jstring result = env->NewStringUTF(ccstrResult); 1118 CHECK_JNI_EXCEPTION_(env, NULL); 1119 return result; 1120 } 1121 return NULL; 1122 WB_END 1123 1124 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1125 bool result = value == JNI_TRUE ? true : false; 1126 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut); 1127 WB_END 1128 1129 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1130 int result = value; 1131 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut); 1132 WB_END 1133 1134 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1135 uint result = value; 1136 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut); 1137 WB_END 1138 1139 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1140 intx result = value; 1141 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut); 1142 WB_END 1143 1144 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1145 uintx result = value; 1146 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut); 1147 WB_END 1148 1149 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1150 uint64_t result = value; 1151 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut); 1152 WB_END 1153 1154 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1155 size_t result = value; 1156 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut); 1157 WB_END 1158 1159 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1160 double result = value; 1161 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut); 1162 WB_END 1163 1164 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1165 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1166 const char* ccstrValue; 1167 if (value == NULL) { 1168 ccstrValue = NULL; 1169 } 1170 else { 1171 ccstrValue = env->GetStringUTFChars(value, NULL); 1172 CHECK_JNI_EXCEPTION(env); 1173 } 1174 ccstr ccstrResult = ccstrValue; 1175 bool needFree; 1176 { 1177 ThreadInVMfromNative ttvfn(thread); // back to VM 1178 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut); 1179 } 1180 if (value != NULL) { 1181 env->ReleaseStringUTFChars(value, ccstrValue); 1182 } 1183 if (needFree) { 1184 FREE_C_HEAP_ARRAY(char, ccstrResult); 1185 } 1186 WB_END 1187 1188 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1189 WhiteBox::compilation_locked = true; 1190 WB_END 1191 1192 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1193 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1194 WhiteBox::compilation_locked = false; 1195 mo.notify_all(); 1196 WB_END 1197 1198 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 1199 // Force a code cache sweep and block until it finished 1200 NMethodSweeper::force_sweep(); 1201 WB_END 1202 1203 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1204 ResourceMark rm(THREAD); 1205 int len; 1206 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1207 return (StringTable::lookup(name, len) != NULL); 1208 WB_END 1209 1210 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1211 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true); 1212 Universe::heap()->collect(GCCause::_wb_full_gc); 1213 #if INCLUDE_ALL_GCS 1214 if (UseG1GC) { 1215 // Needs to be cleared explicitly for G1 1216 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false); 1217 } 1218 #endif // INCLUDE_ALL_GCS 1219 WB_END 1220 1221 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1222 Universe::heap()->collect(GCCause::_wb_young_gc); 1223 WB_END 1224 1225 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1226 // static+volatile in order to force the read to happen 1227 // (not be eliminated by the compiler) 1228 static char c; 1229 static volatile char* p; 1230 1231 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 1232 if (p == NULL) { 1233 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1234 } 1235 1236 c = *p; 1237 WB_END 1238 1239 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1240 const char* features = VM_Version::features_string(); 1241 ThreadToNativeFromVM ttn(thread); 1242 jstring features_string = env->NewStringUTF(features); 1243 1244 CHECK_JNI_EXCEPTION_(env, NULL); 1245 1246 return features_string; 1247 WB_END 1248 1249 int WhiteBox::get_blob_type(const CodeBlob* code) { 1250 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1251 if (code->is_aot()) { 1252 return -1; 1253 } 1254 return CodeCache::get_code_heap(code)->code_blob_type(); 1255 } 1256 1257 CodeHeap* WhiteBox::get_code_heap(int blob_type) { 1258 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1259 return CodeCache::get_code_heap(blob_type); 1260 } 1261 1262 struct CodeBlobStub { 1263 CodeBlobStub(const CodeBlob* blob) : 1264 name(os::strdup(blob->name())), 1265 size(blob->size()), 1266 blob_type(WhiteBox::get_blob_type(blob)), 1267 address((jlong) blob) { } 1268 ~CodeBlobStub() { os::free((void*) name); } 1269 const char* const name; 1270 const jint size; 1271 const jint blob_type; 1272 const jlong address; 1273 }; 1274 1275 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1276 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1277 CHECK_JNI_EXCEPTION_(env, NULL); 1278 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1279 1280 jstring name = env->NewStringUTF(cb->name); 1281 CHECK_JNI_EXCEPTION_(env, NULL); 1282 env->SetObjectArrayElement(result, 0, name); 1283 1284 jobject obj = integerBox(thread, env, cb->size); 1285 CHECK_JNI_EXCEPTION_(env, NULL); 1286 env->SetObjectArrayElement(result, 1, obj); 1287 1288 obj = integerBox(thread, env, cb->blob_type); 1289 CHECK_JNI_EXCEPTION_(env, NULL); 1290 env->SetObjectArrayElement(result, 2, obj); 1291 1292 obj = longBox(thread, env, cb->address); 1293 CHECK_JNI_EXCEPTION_(env, NULL); 1294 env->SetObjectArrayElement(result, 3, obj); 1295 1296 return result; 1297 } 1298 1299 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1300 ResourceMark rm(THREAD); 1301 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1302 CHECK_JNI_EXCEPTION_(env, NULL); 1303 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1304 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1305 jobjectArray result = NULL; 1306 if (code == NULL) { 1307 return result; 1308 } 1309 int comp_level = code->comp_level(); 1310 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size(); 1311 1312 ThreadToNativeFromVM ttn(thread); 1313 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1314 CHECK_JNI_EXCEPTION_(env, NULL); 1315 result = env->NewObjectArray(5, clazz, NULL); 1316 if (result == NULL) { 1317 return result; 1318 } 1319 1320 CodeBlobStub stub(code); 1321 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1322 CHECK_JNI_EXCEPTION_(env, NULL); 1323 env->SetObjectArrayElement(result, 0, codeBlob); 1324 1325 jobject level = integerBox(thread, env, comp_level); 1326 CHECK_JNI_EXCEPTION_(env, NULL); 1327 env->SetObjectArrayElement(result, 1, level); 1328 1329 jbyteArray insts = env->NewByteArray(insts_size); 1330 CHECK_JNI_EXCEPTION_(env, NULL); 1331 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1332 env->SetObjectArrayElement(result, 2, insts); 1333 1334 jobject id = integerBox(thread, env, code->compile_id()); 1335 CHECK_JNI_EXCEPTION_(env, NULL); 1336 env->SetObjectArrayElement(result, 3, id); 1337 1338 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1339 CHECK_JNI_EXCEPTION_(env, NULL); 1340 env->SetObjectArrayElement(result, 4, entry_point); 1341 1342 return result; 1343 WB_END 1344 1345 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1346 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1347 BufferBlob* blob; 1348 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1349 if (full_size < size) { 1350 full_size += align_up(size - full_size, oopSize); 1351 } 1352 { 1353 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1354 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1355 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1356 } 1357 // Track memory usage statistic after releasing CodeCache_lock 1358 MemoryService::track_code_cache_memory_usage(); 1359 return blob; 1360 } 1361 1362 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1363 if (size < 0) { 1364 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1365 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1366 } 1367 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1368 WB_END 1369 1370 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1371 if (addr == 0) { 1372 return; 1373 } 1374 BufferBlob::free((BufferBlob*) addr); 1375 WB_END 1376 1377 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1378 ResourceMark rm; 1379 GrowableArray<CodeBlobStub*> blobs; 1380 { 1381 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1382 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1383 if (heap == NULL) { 1384 return NULL; 1385 } 1386 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1387 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1388 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1389 new (stub) CodeBlobStub(cb); 1390 blobs.append(stub); 1391 } 1392 } 1393 if (blobs.length() == 0) { 1394 return NULL; 1395 } 1396 ThreadToNativeFromVM ttn(thread); 1397 jobjectArray result = NULL; 1398 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1399 CHECK_JNI_EXCEPTION_(env, NULL); 1400 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1401 CHECK_JNI_EXCEPTION_(env, NULL); 1402 if (result == NULL) { 1403 return result; 1404 } 1405 int i = 0; 1406 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1407 it != blobs.end(); ++it) { 1408 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1409 CHECK_JNI_EXCEPTION_(env, NULL); 1410 env->SetObjectArrayElement(result, i, obj); 1411 CHECK_JNI_EXCEPTION_(env, NULL); 1412 ++i; 1413 } 1414 return result; 1415 WB_END 1416 1417 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1418 return CompileBroker::get_compilation_activity_mode(); 1419 WB_END 1420 1421 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1422 if (addr == 0) { 1423 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1424 "WB_GetCodeBlob: addr is null"); 1425 } 1426 ThreadToNativeFromVM ttn(thread); 1427 CodeBlobStub stub((CodeBlob*) addr); 1428 return codeBlob2objectArray(thread, env, &stub); 1429 WB_END 1430 1431 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1432 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1433 CHECK_JNI_EXCEPTION_(env, 0); 1434 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1435 return (jlong) mh->method_data(); 1436 WB_END 1437 1438 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1439 return (jlong) Thread::current()->stack_size(); 1440 WB_END 1441 1442 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1443 JavaThread* t = JavaThread::current(); 1444 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size(); 1445 WB_END 1446 1447 1448 int WhiteBox::array_bytes_to_length(size_t bytes) { 1449 return Array<u1>::bytes_to_length(bytes); 1450 } 1451 1452 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1453 if (size < 0) { 1454 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1455 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1456 } 1457 1458 oop class_loader_oop = JNIHandles::resolve(class_loader); 1459 ClassLoaderData* cld = class_loader_oop != NULL 1460 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1461 : ClassLoaderData::the_null_class_loader_data(); 1462 1463 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1464 1465 return (jlong)(uintptr_t)metadata; 1466 WB_END 1467 1468 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 1469 oop class_loader_oop = JNIHandles::resolve(class_loader); 1470 ClassLoaderData* cld = class_loader_oop != NULL 1471 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1472 : ClassLoaderData::the_null_class_loader_data(); 1473 1474 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 1475 WB_END 1476 1477 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1478 jstring version, jstring location, jobjectArray packages)) 1479 ResourceMark rm(THREAD); 1480 1481 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages)); 1482 objArrayHandle packages_h(THREAD, packages_oop); 1483 int num_packages = (packages_h == NULL ? 0 : packages_h->length()); 1484 1485 char** pkgs = NULL; 1486 if (num_packages > 0) { 1487 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages); 1488 for (int x = 0; x < num_packages; x++) { 1489 oop pkg_str = packages_h->obj_at(x); 1490 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) { 1491 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 1492 err_msg("Bad package name")); 1493 } 1494 pkgs[x] = java_lang_String::as_utf8_string(pkg_str); 1495 } 1496 } 1497 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK); 1498 WB_END 1499 1500 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1501 ResourceMark rm(THREAD); 1502 char* package_name = NULL; 1503 if (package != NULL) { 1504 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1505 } 1506 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK); 1507 WB_END 1508 1509 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1510 ResourceMark rm(THREAD); 1511 char* package_name = NULL; 1512 if (package != NULL) { 1513 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1514 } 1515 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK); 1516 WB_END 1517 1518 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1519 ResourceMark rm(THREAD); 1520 char* package_name = NULL; 1521 if (package != NULL) { 1522 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1523 } 1524 Modules::add_module_exports(module, package_name, NULL, CHECK); 1525 WB_END 1526 1527 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1528 Modules::add_reads_module(from_module, source_module, CHECK); 1529 WB_END 1530 1531 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1532 if (inc < 0) { 1533 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1534 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1535 } 1536 1537 jlong max_size_t = (jlong) ((size_t) -1); 1538 if (inc > max_size_t) { 1539 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1540 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1541 } 1542 1543 size_t new_cap_until_GC = 0; 1544 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1545 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1546 if (!success) { 1547 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1548 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1549 "due to contention with another thread"); 1550 } 1551 return (jlong) new_cap_until_GC; 1552 WB_END 1553 1554 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1555 return (jlong) MetaspaceGC::capacity_until_GC(); 1556 WB_END 1557 1558 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb)) 1559 return MetaspaceGC::should_concurrent_collect(); 1560 WB_END 1561 1562 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb)) 1563 return (jlong)Metaspace::reserve_alignment(); 1564 WB_END 1565 1566 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue)) 1567 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ? 1568 Monitor::_safepoint_check_always : 1569 Monitor::_safepoint_check_never; 1570 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required), 1571 attemptedNoSafepointValue == JNI_TRUE); 1572 WB_END 1573 1574 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1575 oop obj_oop = JNIHandles::resolve(obj); 1576 return (jboolean) obj_oop->mark()->has_monitor(); 1577 WB_END 1578 1579 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1580 VM_ForceSafepoint force_safepoint_op; 1581 VMThread::execute(&force_safepoint_op); 1582 WB_END 1583 1584 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1585 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1586 return (jlong) ik->constants(); 1587 WB_END 1588 1589 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1590 return ConstantPool::CPCACHE_INDEX_TAG; 1591 WB_END 1592 1593 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1594 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1595 ConstantPool* cp = ik->constants(); 1596 if (cp->cache() == NULL) { 1597 return -1; 1598 } 1599 return cp->cache()->length(); 1600 WB_END 1601 1602 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1603 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1604 ConstantPool* cp = ik->constants(); 1605 if (cp->cache() == NULL) { 1606 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1607 } 1608 jint cpci = index; 1609 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1610 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1611 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1612 } 1613 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1614 return cpi; 1615 WB_END 1616 1617 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1618 return ConstantPool::encode_invokedynamic_index(index); 1619 WB_END 1620 1621 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1622 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1623 VMThread::execute(&clear_ics); 1624 WB_END 1625 1626 template <typename T> 1627 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1628 assert(value != NULL, "sanity"); 1629 if (method == NULL || name == NULL) { 1630 return false; 1631 } 1632 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1633 CHECK_JNI_EXCEPTION_(env, false); 1634 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1635 // can't be in VM when we call JNI 1636 ThreadToNativeFromVM ttnfv(thread); 1637 const char* flag_name = env->GetStringUTFChars(name, NULL); 1638 CHECK_JNI_EXCEPTION_(env, false); 1639 bool result = CompilerOracle::has_option_value(mh, flag_name, *value); 1640 env->ReleaseStringUTFChars(name, flag_name); 1641 return result; 1642 } 1643 1644 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1645 bool result; 1646 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1647 // can't be in VM when we call JNI 1648 ThreadToNativeFromVM ttnfv(thread); 1649 return booleanBox(thread, env, result); 1650 } 1651 return NULL; 1652 WB_END 1653 1654 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1655 intx result; 1656 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1657 // can't be in VM when we call JNI 1658 ThreadToNativeFromVM ttnfv(thread); 1659 return longBox(thread, env, result); 1660 } 1661 return NULL; 1662 WB_END 1663 1664 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1665 uintx result; 1666 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1667 // can't be in VM when we call JNI 1668 ThreadToNativeFromVM ttnfv(thread); 1669 return longBox(thread, env, result); 1670 } 1671 return NULL; 1672 WB_END 1673 1674 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1675 double result; 1676 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1677 // can't be in VM when we call JNI 1678 ThreadToNativeFromVM ttnfv(thread); 1679 return doubleBox(thread, env, result); 1680 } 1681 return NULL; 1682 WB_END 1683 1684 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1685 ccstr ccstrResult; 1686 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 1687 // can't be in VM when we call JNI 1688 ThreadToNativeFromVM ttnfv(thread); 1689 jstring result = env->NewStringUTF(ccstrResult); 1690 CHECK_JNI_EXCEPTION_(env, NULL); 1691 return result; 1692 } 1693 return NULL; 1694 WB_END 1695 1696 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 1697 oop obj_oop = JNIHandles::resolve(obj); 1698 return oopDesc::is_archive_object(obj_oop); 1699 WB_END 1700 1701 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 1702 return (jboolean)MetaspaceShared::is_in_shared_space(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1703 WB_END 1704 1705 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env)) 1706 return !StringTable::shared_string_mapped(); 1707 WB_END 1708 1709 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz)) 1710 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 1711 if (k->is_instance_klass()) { 1712 InstanceKlass *ik = InstanceKlass::cast(k); 1713 ConstantPool *cp = ik->constants(); 1714 objArrayOop refs = cp->resolved_references(); 1715 return (jobject)JNIHandles::make_local(env, refs); 1716 } else { 1717 return NULL; 1718 } 1719 WB_END 1720 1721 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 1722 return MetaspaceShared::open_archive_heap_region_mapped(); 1723 WB_END 1724 1725 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env)) 1726 #if INCLUDE_CDS 1727 return true; 1728 #else 1729 return false; 1730 #endif 1731 WB_END 1732 1733 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 1734 class TraceSelfClosure : public ThreadClosure { 1735 jint _num_threads_completed; 1736 1737 void do_thread(Thread* th) { 1738 assert(th->is_Java_thread(), "sanity"); 1739 JavaThread* jt = (JavaThread*)th; 1740 ResourceMark rm; 1741 1742 jt->print_on(tty); 1743 jt->print_stack_on(tty); 1744 tty->cr(); 1745 Atomic::inc(&_num_threads_completed); 1746 } 1747 1748 public: 1749 TraceSelfClosure() : _num_threads_completed(0) {} 1750 1751 jint num_threads_completed() const { return _num_threads_completed; } 1752 }; 1753 TraceSelfClosure tsc; 1754 1755 if (all_threads) { 1756 Handshake::execute(&tsc); 1757 } else { 1758 oop thread_oop = JNIHandles::resolve(thread_handle); 1759 if (thread_oop != NULL) { 1760 JavaThread* target = java_lang_Thread::thread(thread_oop); 1761 Handshake::execute(&tsc, target); 1762 } 1763 } 1764 return tsc.num_threads_completed(); 1765 WB_END 1766 1767 //Some convenience methods to deal with objects from java 1768 int WhiteBox::offset_for_field(const char* field_name, oop object, 1769 Symbol* signature_symbol) { 1770 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 1771 Thread* THREAD = Thread::current(); 1772 1773 //Get the class of our object 1774 Klass* arg_klass = object->klass(); 1775 //Turn it into an instance-klass 1776 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 1777 1778 //Create symbols to look for in the class 1779 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), 1780 THREAD); 1781 1782 //To be filled in with an offset of the field we're looking for 1783 fieldDescriptor fd; 1784 1785 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 1786 if (res == NULL) { 1787 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 1788 name_symbol->as_C_string()); 1789 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 1790 } 1791 1792 //fetch the field at the offset we've found 1793 int dest_offset = fd.offset(); 1794 1795 return dest_offset; 1796 } 1797 1798 1799 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 1800 int offset = offset_for_field(field_name, object, 1801 vmSymbols::string_signature()); 1802 oop string = object->obj_field(offset); 1803 if (string == NULL) { 1804 return NULL; 1805 } 1806 const char* ret = java_lang_String::as_utf8_string(string); 1807 return ret; 1808 } 1809 1810 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 1811 int offset = 1812 offset_for_field(field_name, object, vmSymbols::bool_signature()); 1813 bool ret = (object->bool_field(offset) == JNI_TRUE); 1814 return ret; 1815 } 1816 1817 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 1818 ResourceMark rm; 1819 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1820 1821 // one by one registration natives for exception catching 1822 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 1823 CHECK_JNI_EXCEPTION(env); 1824 for (int i = 0, n = method_count; i < n; ++i) { 1825 // Skip dummy entries 1826 if (method_array[i].fnPtr == NULL) continue; 1827 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 1828 jthrowable throwable_obj = env->ExceptionOccurred(); 1829 if (throwable_obj != NULL) { 1830 env->ExceptionClear(); 1831 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 1832 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 1833 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 1834 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 1835 method_array[i].name, method_array[i].signature); 1836 } 1837 } else { 1838 // Registration failed unexpectedly. 1839 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 1840 method_array[i].name, method_array[i].signature); 1841 env->UnregisterNatives(wbclass); 1842 break; 1843 } 1844 } 1845 } 1846 } 1847 1848 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 1849 // can't be in VM when we call JNI 1850 ThreadToNativeFromVM ttnfv(thread); 1851 const char* dir = env->GetStringUTFChars(compDirect, NULL); 1852 CHECK_JNI_EXCEPTION_(env, 0); 1853 int ret; 1854 { 1855 ThreadInVMfromNative ttvfn(thread); // back to VM 1856 ret = DirectivesParser::parse_string(dir, tty); 1857 } 1858 env->ReleaseStringUTFChars(compDirect, dir); 1859 // -1 for error parsing directive. Return 0 as number of directives added. 1860 if (ret == -1) { 1861 ret = 0; 1862 } 1863 return (jint) ret; 1864 WB_END 1865 1866 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 1867 DirectivesStack::pop(count); 1868 WB_END 1869 1870 // Checks that the library libfile has the noexecstack bit set. 1871 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 1872 jboolean ret = false; 1873 #ifdef LINUX 1874 // Can't be in VM when we call JNI. 1875 ThreadToNativeFromVM ttnfv(thread); 1876 const char* lf = env->GetStringUTFChars(libfile, NULL); 1877 CHECK_JNI_EXCEPTION_(env, 0); 1878 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 1879 env->ReleaseStringUTFChars(libfile, lf); 1880 #endif 1881 return ret; 1882 WB_END 1883 1884 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 1885 LINUX_ONLY(return OSContainer::is_containerized();) 1886 return false; 1887 WB_END 1888 1889 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 1890 os::print_os_info(tty); 1891 WB_END 1892 1893 1894 #define CC (char*) 1895 1896 static JNINativeMethod methods[] = { 1897 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 1898 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 1899 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 1900 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 1901 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 1902 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 1903 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 1904 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 1905 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 1906 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, 1907 {CC"parseCommandLine0", 1908 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 1909 (void*) &WB_ParseCommandLine 1910 }, 1911 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1912 (void*)&WB_AddToBootstrapClassLoaderSearch}, 1913 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1914 (void*)&WB_AddToSystemClassLoaderSearch}, 1915 {CC"getCompressedOopsMaxHeapSize", CC"()J", 1916 (void*)&WB_GetCompressedOopsMaxHeapSize}, 1917 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 1918 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 1919 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 1920 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 1921 #if INCLUDE_ALL_GCS 1922 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 1923 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 1924 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 1925 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 1926 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 1927 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 1928 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 1929 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 1930 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 1931 (void*)&WB_G1AuxiliaryMemoryUsage }, 1932 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 1933 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 1934 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 1935 #endif // INCLUDE_ALL_GCS 1936 #if INCLUDE_NMT 1937 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 1938 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 1939 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 1940 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 1941 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 1942 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 1943 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 1944 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 1945 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 1946 #endif // INCLUDE_NMT 1947 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 1948 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 1949 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 1950 (void*)&WB_DeoptimizeMethod }, 1951 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 1952 (void*)&WB_IsMethodCompiled }, 1953 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 1954 (void*)&WB_IsMethodCompilable}, 1955 {CC"isMethodQueuedForCompilation0", 1956 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 1957 {CC"isIntrinsicAvailable0", 1958 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 1959 (void*)&WB_IsIntrinsicAvailable}, 1960 {CC"makeMethodNotCompilable0", 1961 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 1962 {CC"testSetDontInlineMethod0", 1963 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 1964 {CC"getMethodCompilationLevel0", 1965 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 1966 {CC"getMethodEntryBci0", 1967 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 1968 {CC"getCompileQueueSize", 1969 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 1970 {CC"testSetForceInlineMethod0", 1971 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 1972 {CC"enqueueMethodForCompilation0", 1973 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 1974 {CC"enqueueInitializerForCompilation0", 1975 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 1976 {CC"clearMethodState0", 1977 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 1978 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 1979 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 1980 {CC"matchesMethod", 1981 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 1982 (void*)&WB_MatchesMethod}, 1983 {CC"matchesInline", 1984 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 1985 (void*)&WB_MatchesInline}, 1986 {CC"shouldPrintAssembly", 1987 CC"(Ljava/lang/reflect/Executable;I)Z", 1988 (void*)&WB_ShouldPrintAssembly}, 1989 1990 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 1991 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 1992 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 1993 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 1994 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 1995 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 1996 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 1997 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 1998 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 1999 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2000 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2001 (void*)&WB_SetStringVMFlag}, 2002 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2003 (void*)&WB_GetBooleanVMFlag}, 2004 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2005 (void*)&WB_GetIntVMFlag}, 2006 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2007 (void*)&WB_GetUintVMFlag}, 2008 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2009 (void*)&WB_GetIntxVMFlag}, 2010 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2011 (void*)&WB_GetUintxVMFlag}, 2012 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2013 (void*)&WB_GetUint64VMFlag}, 2014 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2015 (void*)&WB_GetSizeTVMFlag}, 2016 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2017 (void*)&WB_GetDoubleVMFlag}, 2018 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2019 (void*)&WB_GetStringVMFlag}, 2020 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2021 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2022 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2023 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2024 {CC"allocateMetaspace", 2025 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2026 {CC"freeMetaspace", 2027 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 2028 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2029 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2030 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect }, 2031 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment }, 2032 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2033 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2034 (void*)&WB_GetNMethod }, 2035 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 2036 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2037 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2038 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2039 {CC"getCompilationActivityMode", 2040 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2041 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2042 (void*)&WB_GetMethodData }, 2043 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2044 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2045 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2046 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2047 (void*)&WB_DefineModule }, 2048 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2049 (void*)&WB_AddModuleExports }, 2050 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2051 (void*)&WB_AddReadsModule }, 2052 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2053 (void*)&WB_AddModuleExportsToAllUnnamed }, 2054 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2055 (void*)&WB_AddModuleExportsToAll }, 2056 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls }, 2057 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2058 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2059 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2060 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 2061 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 2062 {CC"remapInstructionOperandFromCPCache0", 2063 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 2064 {CC"encodeConstantPoolIndyIndex0", 2065 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 2066 {CC"getMethodBooleanOption", 2067 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2068 (void*)&WB_GetMethodBooleaneOption}, 2069 {CC"getMethodIntxOption", 2070 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2071 (void*)&WB_GetMethodIntxOption}, 2072 {CC"getMethodUintxOption", 2073 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2074 (void*)&WB_GetMethodUintxOption}, 2075 {CC"getMethodDoubleOption", 2076 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2077 (void*)&WB_GetMethodDoubleOption}, 2078 {CC"getMethodStringOption", 2079 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2080 (void*)&WB_GetMethodStringOption}, 2081 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 2082 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2083 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored }, 2084 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 2085 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2086 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild }, 2087 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2088 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2089 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2090 (void*)&WB_AddCompilerDirective }, 2091 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2092 {CC"currentGC", CC"()I", (void*)&WB_CurrentGC}, 2093 {CC"allSupportedGC", CC"()I", (void*)&WB_AllSupportedGC}, 2094 {CC"gcSelectedByErgo", CC"()Z", (void*)&WB_GCSelectedByErgo}, 2095 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl}, 2096 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;", 2097 (void*)&WB_GetConcurrentGCPhases}, 2098 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z", 2099 (void*)&WB_RequestConcurrentGCPhase}, 2100 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2101 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2102 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2103 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2104 }; 2105 2106 2107 #undef CC 2108 2109 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2110 { 2111 if (WhiteBoxAPI) { 2112 // Make sure that wbclass is loaded by the null classloader 2113 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass()); 2114 Handle loader(THREAD, ik->class_loader()); 2115 if (loader.is_null()) { 2116 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2117 WhiteBox::register_extended(env, wbclass, thread); 2118 WhiteBox::set_used(); 2119 } 2120 } 2121 } 2122 JVM_END