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