1 /* 2 * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 27 #include <new> 28 29 #include "classfile/classLoaderData.hpp" 30 #include "classfile/modules.hpp" 31 #include "classfile/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.inline.hpp" 44 #include "oops/method.inline.hpp" 45 #include "oops/objArrayKlass.hpp" 46 #include "oops/objArrayOop.inline.hpp" 47 #include "oops/oop.inline.hpp" 48 #include "oops/typeArrayOop.inline.hpp" 49 #include "prims/wbtestmethods/parserTests.hpp" 50 #include "prims/whitebox.inline.hpp" 51 #include "runtime/arguments.hpp" 52 #include "runtime/compilationPolicy.hpp" 53 #include "runtime/deoptimization.hpp" 54 #include "runtime/frame.inline.hpp" 55 #include "runtime/handshake.hpp" 56 #include "runtime/interfaceSupport.inline.hpp" 57 #include "runtime/javaCalls.hpp" 58 #include "runtime/jniHandles.inline.hpp" 59 #include "runtime/os.hpp" 60 #include "runtime/sweeper.hpp" 61 #include "runtime/thread.hpp" 62 #include "runtime/threadSMR.hpp" 63 #include "runtime/vm_version.hpp" 64 #include "services/memoryService.hpp" 65 #include "utilities/align.hpp" 66 #include "utilities/debug.hpp" 67 #include "utilities/elfFile.hpp" 68 #include "utilities/exceptions.hpp" 69 #include "utilities/macros.hpp" 70 #if INCLUDE_CDS 71 #include "prims/cdsoffsets.hpp" 72 #endif // INCLUDE_CDS 73 #if INCLUDE_ALL_GCS 74 #include "gc/g1/concurrentMarkThread.hpp" 75 #include "gc/g1/g1CollectedHeap.inline.hpp" 76 #include "gc/g1/g1ConcurrentMark.hpp" 77 #include "gc/g1/heapRegionRemSet.hpp" 78 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 79 #include "gc/parallel/adjoiningGenerations.hpp" 80 #endif // INCLUDE_ALL_GCS 81 #if INCLUDE_NMT 82 #include "services/mallocSiteTable.hpp" 83 #include "services/memTracker.hpp" 84 #include "utilities/nativeCallStack.hpp" 85 #endif // INCLUDE_NMT 86 87 #ifdef LINUX 88 #include "osContainer_linux.hpp" 89 #endif 90 91 #define SIZE_T_MAX_VALUE ((size_t) -1) 92 93 #define CHECK_JNI_EXCEPTION_(env, value) \ 94 do { \ 95 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 96 if (HAS_PENDING_EXCEPTION) { \ 97 return(value); \ 98 } \ 99 } while (0) 100 101 #define CHECK_JNI_EXCEPTION(env) \ 102 do { \ 103 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 104 if (HAS_PENDING_EXCEPTION) { \ 105 return; \ 106 } \ 107 } while (0) 108 109 bool WhiteBox::_used = false; 110 volatile bool WhiteBox::compilation_locked = false; 111 112 class VM_WhiteBoxOperation : public VM_Operation { 113 public: 114 VM_WhiteBoxOperation() { } 115 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 116 bool allow_nested_vm_operations() const { return true; } 117 }; 118 119 120 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 121 return (jlong)(void*)JNIHandles::resolve(obj); 122 WB_END 123 124 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 125 return heapOopSize; 126 WB_END 127 128 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 129 return os::vm_page_size(); 130 WB_END 131 132 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 133 return os::vm_allocation_granularity(); 134 WB_END 135 136 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 137 return os::large_page_size(); 138 WB_END 139 140 class WBIsKlassAliveClosure : public KlassClosure { 141 Symbol* _name; 142 bool _found; 143 public: 144 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} 145 146 void do_klass(Klass* k) { 147 if (_found) return; 148 Symbol* ksym = k->name(); 149 if (ksym->fast_compare(_name) == 0) { 150 _found = true; 151 } 152 } 153 154 bool found() const { 155 return _found; 156 } 157 }; 158 159 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) 160 oop h_name = JNIHandles::resolve(name); 161 if (h_name == NULL) return false; 162 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false); 163 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 164 165 WBIsKlassAliveClosure closure(sym); 166 ClassLoaderDataGraph::classes_do(&closure); 167 168 return closure.found(); 169 WB_END 170 171 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 172 #if INCLUDE_JVMTI 173 ResourceMark rm; 174 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 175 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 176 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 177 assert(err == JVMTI_ERROR_NONE, "must not fail"); 178 #endif 179 } 180 WB_END 181 182 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 183 #if INCLUDE_JVMTI 184 ResourceMark rm; 185 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 186 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 187 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 188 assert(err == JVMTI_ERROR_NONE, "must not fail"); 189 #endif 190 } 191 WB_END 192 193 194 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 195 return (jlong)Arguments::max_heap_for_compressed_oops(); 196 } 197 WB_END 198 199 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 200 CollectorPolicy * p = Universe::heap()->collector_policy(); 201 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " 202 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 203 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(), 204 p->space_alignment(), p->heap_alignment()); 205 } 206 WB_END 207 208 #ifndef PRODUCT 209 // Forward declaration 210 void TestReservedSpace_test(); 211 void TestReserveMemorySpecial_test(); 212 void TestVirtualSpace_test(); 213 void TestMetaspaceUtils_test(); 214 #endif 215 216 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) 217 #ifndef PRODUCT 218 TestReservedSpace_test(); 219 TestReserveMemorySpecial_test(); 220 TestVirtualSpace_test(); 221 TestMetaspaceUtils_test(); 222 #endif 223 WB_END 224 225 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 226 size_t granularity = os::vm_allocation_granularity(); 227 ReservedHeapSpace rhs(100 * granularity, granularity, false); 228 VirtualSpace vs; 229 vs.initialize(rhs, 50 * granularity); 230 231 // Check if constraints are complied 232 if (!( UseCompressedOops && rhs.base() != NULL && 233 Universe::narrow_oop_base() != NULL && 234 Universe::narrow_oop_use_implicit_null_checks() )) { 235 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 236 "\tUseCompressedOops is %d\n" 237 "\trhs.base() is " PTR_FORMAT "\n" 238 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n" 239 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d", 240 UseCompressedOops, 241 p2i(rhs.base()), 242 p2i(Universe::narrow_oop_base()), 243 Universe::narrow_oop_use_implicit_null_checks()); 244 return; 245 } 246 tty->print_cr("Reading from no access area... "); 247 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 248 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 249 WB_END 250 251 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 252 size_t magnitude, size_t iterations) { 253 size_t granularity = os::vm_allocation_granularity(); 254 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false); 255 VirtualSpace vs; 256 if (!vs.initialize(rhs, 0)) { 257 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 258 return 3; 259 } 260 261 int seed = os::random(); 262 tty->print_cr("Random seed is %d", seed); 263 os::init_random(seed); 264 265 for (size_t i = 0; i < iterations; i++) { 266 267 // Whether we will shrink or grow 268 bool shrink = os::random() % 2L == 0; 269 270 // Get random delta to resize virtual space 271 size_t delta = (size_t)os::random() % magnitude; 272 273 // If we are about to shrink virtual space below zero, then expand instead 274 if (shrink && vs.committed_size() < delta) { 275 shrink = false; 276 } 277 278 // Resizing by delta 279 if (shrink) { 280 vs.shrink_by(delta); 281 } else { 282 // If expanding fails expand_by will silently return false 283 vs.expand_by(delta, true); 284 } 285 } 286 return 0; 287 } 288 289 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 290 jlong reserved_space_size, jlong magnitude, jlong iterations)) 291 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 292 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 293 iterations); 294 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 295 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 296 return 1; 297 } 298 299 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 300 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 301 if (sizeof(size_t) < sizeof(jlong)) { 302 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; 303 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 304 || iterations > size_t_max_value) { 305 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 306 return 2; 307 } 308 } 309 310 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 311 (size_t) magnitude, (size_t) iterations); 312 WB_END 313 314 static const jint serial_code = 1; 315 static const jint parallel_code = 2; 316 static const jint cms_code = 4; 317 static const jint g1_code = 8; 318 319 WB_ENTRY(jint, WB_CurrentGC(JNIEnv* env, jobject o, jobject obj)) 320 if (UseSerialGC) { 321 return serial_code; 322 } else if (UseParallelGC || UseParallelOldGC) { 323 return parallel_code; 324 } if (UseConcMarkSweepGC) { 325 return cms_code; 326 } else if (UseG1GC) { 327 return g1_code; 328 } 329 ShouldNotReachHere(); 330 return 0; 331 WB_END 332 333 WB_ENTRY(jint, WB_AllSupportedGC(JNIEnv* env, jobject o, jobject obj)) 334 #if INCLUDE_ALL_GCS 335 return serial_code | parallel_code | cms_code | g1_code; 336 #else 337 return serial_code; 338 #endif // INCLUDE_ALL_GCS 339 WB_END 340 341 WB_ENTRY(jboolean, WB_GCSelectedByErgo(JNIEnv* env, jobject o, jobject obj)) 342 if (UseSerialGC) { 343 return FLAG_IS_ERGO(UseSerialGC); 344 } else if (UseParallelGC) { 345 return FLAG_IS_ERGO(UseParallelGC); 346 } else if (UseParallelOldGC) { 347 return FLAG_IS_ERGO(UseParallelOldGC); 348 } else if (UseConcMarkSweepGC) { 349 return FLAG_IS_ERGO(UseConcMarkSweepGC); 350 } else if (UseG1GC) { 351 return FLAG_IS_ERGO(UseG1GC); 352 } 353 ShouldNotReachHere(); 354 return false; 355 WB_END 356 357 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 358 oop p = JNIHandles::resolve(obj); 359 #if INCLUDE_ALL_GCS 360 if (UseG1GC) { 361 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 362 const HeapRegion* hr = g1->heap_region_containing(p); 363 if (hr == NULL) { 364 return false; 365 } 366 return !(hr->is_young()); 367 } else if (UseParallelGC) { 368 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 369 return !psh->is_in_young(p); 370 } 371 #endif // INCLUDE_ALL_GCS 372 GenCollectedHeap* gch = GenCollectedHeap::heap(); 373 return !gch->is_in_young(p); 374 WB_END 375 376 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 377 oop p = JNIHandles::resolve(obj); 378 return p->size() * HeapWordSize; 379 WB_END 380 381 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 382 size_t alignment = Universe::heap()->collector_policy()->space_alignment(); 383 return (jlong)alignment; 384 WB_END 385 386 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 387 size_t alignment = Universe::heap()->collector_policy()->heap_alignment(); 388 return (jlong)alignment; 389 WB_END 390 391 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o)) 392 return Universe::heap()->supports_concurrent_phase_control(); 393 WB_END 394 395 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o)) 396 const char* const* phases = Universe::heap()->concurrent_phases(); 397 jint nphases = 0; 398 for ( ; phases[nphases] != NULL; ++nphases) ; 399 400 ResourceMark rm(thread); 401 ThreadToNativeFromVM ttn(thread); 402 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 403 CHECK_JNI_EXCEPTION_(env, NULL); 404 405 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL); 406 CHECK_JNI_EXCEPTION_(env, NULL); 407 408 // If push fails, return with pending exception. 409 if (env->PushLocalFrame(nphases) < 0) return NULL; 410 for (jint i = 0; i < nphases; ++i) { 411 jstring phase = env->NewStringUTF(phases[i]); 412 CHECK_JNI_EXCEPTION_(env, NULL); 413 env->SetObjectArrayElement(result, i, phase); 414 CHECK_JNI_EXCEPTION_(env, NULL); 415 } 416 env->PopLocalFrame(NULL); 417 418 return result; 419 WB_END 420 421 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name)) 422 Handle h_name(THREAD, JNIHandles::resolve(name)); 423 ResourceMark rm; 424 const char* c_name = java_lang_String::as_utf8_string(h_name()); 425 return Universe::heap()->request_concurrent_phase(c_name); 426 WB_END 427 428 #if INCLUDE_ALL_GCS 429 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 430 if (UseG1GC) { 431 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 432 oop result = JNIHandles::resolve(obj); 433 const HeapRegion* hr = g1->heap_region_containing(result); 434 return hr->is_humongous(); 435 } 436 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 437 WB_END 438 439 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 440 if (UseG1GC) { 441 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 442 const HeapRegion* hr = g1->heap_region_containing((void*) addr); 443 return hr->is_humongous(); 444 } 445 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 446 WB_END 447 448 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 449 if (UseG1GC) { 450 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 451 const HeapRegion* hr = g1->heap_region_containing((void*) addr); 452 return hr->is_free(); 453 } 454 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 455 WB_END 456 457 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 458 if (UseG1GC) { 459 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 460 size_t nr = g1->max_regions(); 461 return (jlong)nr; 462 } 463 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 464 WB_END 465 466 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 467 if (UseG1GC) { 468 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 469 size_t nr = g1->num_free_regions(); 470 return (jlong)nr; 471 } 472 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 473 WB_END 474 475 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 476 if (UseG1GC) { 477 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 478 return g1h->concurrent_mark()->cm_thread()->during_cycle(); 479 } 480 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 481 WB_END 482 483 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o)) 484 if (UseG1GC) { 485 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 486 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) { 487 g1h->collect(GCCause::_wb_conc_mark); 488 return true; 489 } 490 return false; 491 } 492 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled"); 493 WB_END 494 495 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 496 if (UseG1GC) { 497 return (jint)HeapRegion::GrainBytes; 498 } 499 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 500 WB_END 501 502 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 503 #if INCLUDE_ALL_GCS 504 if (UseParallelGC) { 505 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment(); 506 } 507 #endif // INCLUDE_ALL_GCS 508 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 509 WB_END 510 511 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 512 #if INCLUDE_ALL_GCS 513 if (UseParallelGC) { 514 return ParallelScavengeHeap::heap()->generation_alignment(); 515 } 516 #endif // INCLUDE_ALL_GCS 517 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 518 WB_END 519 520 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 521 #if INCLUDE_ALL_GCS 522 if (UseG1GC) { 523 ResourceMark rm(THREAD); 524 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 525 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 526 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 527 return JNIHandles::make_local(env, h()); 528 } 529 #endif // INCLUDE_ALL_GCS 530 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 531 WB_END 532 533 class OldRegionsLivenessClosure: public HeapRegionClosure { 534 535 private: 536 const int _liveness; 537 size_t _total_count; 538 size_t _total_memory; 539 size_t _total_memory_to_free; 540 541 public: 542 OldRegionsLivenessClosure(int liveness) : 543 _liveness(liveness), 544 _total_count(0), 545 _total_memory(0), 546 _total_memory_to_free(0) { } 547 548 size_t total_count() { return _total_count; } 549 size_t total_memory() { return _total_memory; } 550 size_t total_memory_to_free() { return _total_memory_to_free; } 551 552 bool do_heap_region(HeapRegion* r) { 553 if (r->is_old()) { 554 size_t prev_live = r->marked_bytes(); 555 size_t live = r->live_bytes(); 556 size_t size = r->used(); 557 size_t reg_size = HeapRegion::GrainBytes; 558 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 559 _total_memory += size; 560 ++_total_count; 561 if (size == reg_size) { 562 // we don't include non-full regions since they are unlikely included in mixed gc 563 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 564 _total_memory_to_free += size - prev_live; 565 } 566 } 567 } 568 return false; 569 } 570 }; 571 572 573 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 574 if (!UseG1GC) { 575 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 576 } 577 if (liveness < 0) { 578 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 579 } 580 581 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 582 OldRegionsLivenessClosure rli(liveness); 583 g1h->heap_region_iterate(&rli); 584 585 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 586 result->long_at_put(0, rli.total_count()); 587 result->long_at_put(1, rli.total_memory()); 588 result->long_at_put(2, rli.total_memory_to_free()); 589 return (jlongArray) JNIHandles::make_local(env, result); 590 WB_END 591 592 #endif // INCLUDE_ALL_GCS 593 594 #if INCLUDE_NMT 595 // Alloc memory using the test memory type so that we can use that to see if 596 // NMT picks it up correctly 597 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 598 jlong addr = 0; 599 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 600 return addr; 601 WB_END 602 603 // Alloc memory with pseudo call stack. The test can create psudo malloc 604 // allocation site to stress the malloc tracking. 605 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 606 address pc = (address)(size_t)pseudo_stack; 607 NativeCallStack stack(&pc, 1); 608 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 609 WB_END 610 611 // Free the memory allocated by NMTAllocTest 612 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 613 os::free((void*)(uintptr_t)mem); 614 WB_END 615 616 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 617 jlong addr = 0; 618 619 addr = (jlong)(uintptr_t)os::reserve_memory(size); 620 MemTracker::record_virtual_memory_type((address)addr, mtTest); 621 622 return addr; 623 WB_END 624 625 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size)) 626 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr); 627 MemTracker::record_virtual_memory_type((address)addr, mtTest); 628 629 return addr; 630 WB_END 631 632 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 633 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 634 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 635 WB_END 636 637 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 638 os::uncommit_memory((char *)(uintptr_t)addr, size); 639 WB_END 640 641 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 642 os::release_memory((char *)(uintptr_t)addr, size); 643 WB_END 644 645 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env)) 646 // Test that we can downgrade NMT levels but not upgrade them. 647 if (MemTracker::tracking_level() == NMT_off) { 648 MemTracker::transition_to(NMT_off); 649 return MemTracker::tracking_level() == NMT_off; 650 } else { 651 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking"); 652 MemTracker::transition_to(NMT_summary); 653 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now"); 654 655 // Can't go to detail once NMT is set to summary. 656 MemTracker::transition_to(NMT_detail); 657 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now"); 658 659 // Shutdown sets tracking level to minimal. 660 MemTracker::shutdown(); 661 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); 662 663 // Once the tracking level is minimal, we cannot increase to summary. 664 // The code ignores this request instead of asserting because if the malloc site 665 // table overflows in another thread, it tries to change the code to summary. 666 MemTracker::transition_to(NMT_summary); 667 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 668 669 // Really can never go up to detail, verify that the code would never do this. 670 MemTracker::transition_to(NMT_detail); 671 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 672 return MemTracker::tracking_level() == NMT_minimal; 673 } 674 WB_END 675 676 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 677 int hash_size = MallocSiteTable::hash_buckets(); 678 assert(hash_size > 0, "NMT hash_size should be > 0"); 679 return (jint)hash_size; 680 WB_END 681 #endif // INCLUDE_NMT 682 683 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 684 assert(method != NULL, "method should not be null"); 685 ThreadToNativeFromVM ttn(thread); 686 return env->FromReflectedMethod(method); 687 } 688 689 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 690 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 691 private: 692 int _result; 693 const bool _make_not_entrant; 694 public: 695 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 696 _result(0), _make_not_entrant(make_not_entrant) { } 697 int result() const { return _result; } 698 699 void doit() { 700 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 701 if (t->has_last_Java_frame()) { 702 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) { 703 frame* f = fst.current(); 704 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 705 RegisterMap* reg_map = fst.register_map(); 706 Deoptimization::deoptimize(t, *f, reg_map); 707 if (_make_not_entrant) { 708 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 709 assert(cm != NULL, "sanity check"); 710 cm->make_not_entrant(); 711 } 712 ++_result; 713 } 714 } 715 } 716 } 717 } 718 }; 719 720 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 721 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 722 VMThread::execute(&op); 723 return op.result(); 724 WB_END 725 726 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 727 MutexLockerEx mu(Compile_lock); 728 CodeCache::mark_all_nmethods_for_deoptimization(); 729 VM_Deoptimize op; 730 VMThread::execute(&op); 731 WB_END 732 733 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 734 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 735 int result = 0; 736 CHECK_JNI_EXCEPTION_(env, result); 737 MutexLockerEx mu(Compile_lock); 738 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 739 if (is_osr) { 740 result += mh->mark_osr_nmethods(); 741 } else if (mh->code() != NULL) { 742 mh->code()->mark_for_deoptimization(); 743 ++result; 744 } 745 result += CodeCache::mark_for_deoptimization(mh()); 746 if (result > 0) { 747 VM_Deoptimize op; 748 VMThread::execute(&op); 749 } 750 return result; 751 WB_END 752 753 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 754 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 755 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 756 MutexLockerEx mu(Compile_lock); 757 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 758 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 759 if (code == NULL) { 760 return JNI_FALSE; 761 } 762 return (code->is_alive() && !code->is_marked_for_deoptimization()); 763 WB_END 764 765 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 766 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 767 return false; 768 } 769 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 770 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 771 MutexLockerEx mu(Compile_lock); 772 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 773 if (is_osr) { 774 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); 775 } else { 776 return CompilationPolicy::can_be_compiled(mh, comp_level); 777 } 778 WB_END 779 780 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 781 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 782 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 783 MutexLockerEx mu(Compile_lock); 784 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 785 return mh->queued_for_compilation(); 786 WB_END 787 788 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 789 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 790 return false; // Intrinsic is not available on a non-existent compilation level. 791 } 792 jmethodID method_id, compilation_context_id; 793 method_id = reflected_method_to_jmid(thread, env, method); 794 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 795 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 796 797 DirectiveSet* directive; 798 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 799 assert(comp != NULL, "compiler not available"); 800 if (compilation_context != NULL) { 801 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 802 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 803 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 804 directive = DirectivesStack::getMatchingDirective(cch, comp); 805 } else { 806 // Calling with NULL matches default directive 807 directive = DirectivesStack::getDefaultDirective(comp); 808 } 809 bool result = comp->is_intrinsic_available(mh, directive); 810 DirectivesStack::release(directive); 811 return result; 812 WB_END 813 814 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 815 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 816 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 817 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 818 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 819 return (code != NULL ? code->comp_level() : CompLevel_none); 820 WB_END 821 822 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 823 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 824 CHECK_JNI_EXCEPTION(env); 825 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 826 if (is_osr) { 827 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox"); 828 } else { 829 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); 830 } 831 WB_END 832 833 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 834 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 835 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 836 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 837 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 838 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 839 WB_END 840 841 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 842 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 843 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 844 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 845 bool result = mh->dont_inline(); 846 mh->set_dont_inline(value == JNI_TRUE); 847 return result; 848 WB_END 849 850 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 851 if (comp_level == CompLevel_any) { 852 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 853 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 854 } else { 855 return CompileBroker::queue_size(comp_level); 856 } 857 WB_END 858 859 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 860 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 861 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 862 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 863 bool result = mh->force_inline(); 864 mh->set_force_inline(value == JNI_TRUE); 865 return result; 866 WB_END 867 868 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) { 869 // Screen for unavailable/bad comp level or null method 870 AbstractCompiler* comp = CompileBroker::compiler(comp_level); 871 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) || comp == NULL) { 872 return false; 873 } 874 875 // Check if compilation is blocking 876 methodHandle mh(THREAD, method); 877 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 878 bool is_blocking = !directive->BackgroundCompilationOption; 879 DirectivesStack::release(directive); 880 881 // Compile method and check result 882 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD); 883 MutexLockerEx mu(Compile_lock); 884 return ((!is_blocking && mh->queued_for_compilation()) || nm != NULL); 885 } 886 887 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 888 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 889 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 890 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 891 WB_END 892 893 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 894 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 895 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD); 896 WB_END 897 898 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 899 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 900 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 901 902 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 903 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 904 bool result = directive->PrintAssemblyOption; 905 DirectivesStack::release(directive); 906 907 return result; 908 WB_END 909 910 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 911 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 912 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 913 914 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 915 916 ResourceMark rm; 917 const char* error_msg = NULL; 918 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 919 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 920 921 if (m == NULL) { 922 assert(error_msg != NULL, "Always have an error message"); 923 tty->print_cr("Got error: %s", error_msg); 924 return -1; // Pattern failed 925 } 926 927 // Pattern works - now check if it matches 928 int result; 929 if (m->match(mh, InlineMatcher::force_inline)) { 930 result = 2; // Force inline match 931 } else if (m->match(mh, InlineMatcher::dont_inline)) { 932 result = 1; // Dont inline match 933 } else { 934 result = 0; // No match 935 } 936 delete m; 937 return result; 938 WB_END 939 940 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 941 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 942 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 943 944 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 945 946 ResourceMark rm; 947 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 948 949 const char* error_msg = NULL; 950 951 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg); 952 if (m == NULL) { 953 assert(error_msg != NULL, "Must have error_msg"); 954 tty->print_cr("Got error: %s", error_msg); 955 return -1; 956 } 957 958 // Pattern works - now check if it matches 959 int result = m->matches(mh); 960 delete m; 961 assert(result == 0 || result == 1, "Result out of range"); 962 return result; 963 WB_END 964 965 static AlwaysFalseClosure always_false; 966 967 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 968 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 969 CHECK_JNI_EXCEPTION(env); 970 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 971 MutexLockerEx mu(Compile_lock); 972 MethodData* mdo = mh->method_data(); 973 MethodCounters* mcs = mh->method_counters(); 974 975 if (mdo != NULL) { 976 mdo->init(); 977 ResourceMark rm; 978 int arg_count = mdo->method()->size_of_parameters(); 979 for (int i = 0; i < arg_count; i++) { 980 mdo->set_arg_modified(i, 0); 981 } 982 MutexLockerEx mu(mdo->extra_data_lock()); 983 mdo->clean_method_data(&always_false); 984 } 985 986 mh->clear_not_c1_compilable(); 987 mh->clear_not_c2_compilable(); 988 mh->clear_not_c2_osr_compilable(); 989 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 990 if (mcs != NULL) { 991 mcs->backedge_counter()->init(); 992 mcs->invocation_counter()->init(); 993 mcs->set_interpreter_invocation_count(0); 994 mcs->set_interpreter_throwout_count(0); 995 996 #ifdef TIERED 997 mcs->set_rate(0.0F); 998 mh->set_prev_event_count(0); 999 mh->set_prev_time(0); 1000 #endif 1001 } 1002 WB_END 1003 1004 template <typename T> 1005 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) { 1006 if (name == NULL) { 1007 return false; 1008 } 1009 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1010 const char* flag_name = env->GetStringUTFChars(name, NULL); 1011 CHECK_JNI_EXCEPTION_(env, false); 1012 Flag::Error result = (*TAt)(flag_name, value, true, true); 1013 env->ReleaseStringUTFChars(name, flag_name); 1014 return (result == Flag::SUCCESS); 1015 } 1016 1017 template <typename T> 1018 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) { 1019 if (name == NULL) { 1020 return false; 1021 } 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, false); 1025 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL); 1026 env->ReleaseStringUTFChars(name, flag_name); 1027 return (result == Flag::SUCCESS); 1028 } 1029 1030 template <typename T> 1031 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1032 ResourceMark rm(thread); 1033 jclass clazz = env->FindClass(name->as_C_string()); 1034 CHECK_JNI_EXCEPTION_(env, NULL); 1035 jmethodID methodID = env->GetStaticMethodID(clazz, 1036 vmSymbols::valueOf_name()->as_C_string(), 1037 sig->as_C_string()); 1038 CHECK_JNI_EXCEPTION_(env, NULL); 1039 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1040 CHECK_JNI_EXCEPTION_(env, NULL); 1041 return result; 1042 } 1043 1044 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1045 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1046 } 1047 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1048 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1049 } 1050 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1051 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1052 } 1053 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1054 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1055 }*/ 1056 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1057 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1058 } 1059 1060 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1061 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1062 const char* flag_name = env->GetStringUTFChars(name, NULL); 1063 CHECK_JNI_EXCEPTION_(env, NULL); 1064 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true); 1065 env->ReleaseStringUTFChars(name, flag_name); 1066 return result; 1067 } 1068 1069 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1070 Flag* flag = getVMFlag(thread, env, name); 1071 return (flag != NULL) && flag->is_constant_in_binary(); 1072 WB_END 1073 1074 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1075 Flag* flag = getVMFlag(thread, env, name); 1076 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 1077 WB_END 1078 1079 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1080 bool result; 1081 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) { 1082 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1083 return booleanBox(thread, env, result); 1084 } 1085 return NULL; 1086 WB_END 1087 1088 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1089 int result; 1090 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) { 1091 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1092 return longBox(thread, env, result); 1093 } 1094 return NULL; 1095 WB_END 1096 1097 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1098 uint result; 1099 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) { 1100 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1101 return longBox(thread, env, result); 1102 } 1103 return NULL; 1104 WB_END 1105 1106 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1107 intx result; 1108 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) { 1109 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1110 return longBox(thread, env, result); 1111 } 1112 return NULL; 1113 WB_END 1114 1115 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1116 uintx result; 1117 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) { 1118 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1119 return longBox(thread, env, result); 1120 } 1121 return NULL; 1122 WB_END 1123 1124 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1125 uint64_t result; 1126 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) { 1127 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1128 return longBox(thread, env, result); 1129 } 1130 return NULL; 1131 WB_END 1132 1133 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1134 uintx result; 1135 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) { 1136 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1137 return longBox(thread, env, result); 1138 } 1139 return NULL; 1140 WB_END 1141 1142 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1143 double result; 1144 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) { 1145 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1146 return doubleBox(thread, env, result); 1147 } 1148 return NULL; 1149 WB_END 1150 1151 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1152 ccstr ccstrResult; 1153 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) { 1154 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1155 jstring result = env->NewStringUTF(ccstrResult); 1156 CHECK_JNI_EXCEPTION_(env, NULL); 1157 return result; 1158 } 1159 return NULL; 1160 WB_END 1161 1162 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1163 bool result = value == JNI_TRUE ? true : false; 1164 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut); 1165 WB_END 1166 1167 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1168 int result = value; 1169 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut); 1170 WB_END 1171 1172 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1173 uint result = value; 1174 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut); 1175 WB_END 1176 1177 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1178 intx result = value; 1179 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut); 1180 WB_END 1181 1182 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1183 uintx result = value; 1184 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut); 1185 WB_END 1186 1187 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1188 uint64_t result = value; 1189 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut); 1190 WB_END 1191 1192 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1193 size_t result = value; 1194 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut); 1195 WB_END 1196 1197 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1198 double result = value; 1199 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut); 1200 WB_END 1201 1202 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1203 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1204 const char* ccstrValue; 1205 if (value == NULL) { 1206 ccstrValue = NULL; 1207 } 1208 else { 1209 ccstrValue = env->GetStringUTFChars(value, NULL); 1210 CHECK_JNI_EXCEPTION(env); 1211 } 1212 ccstr ccstrResult = ccstrValue; 1213 bool needFree; 1214 { 1215 ThreadInVMfromNative ttvfn(thread); // back to VM 1216 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut); 1217 } 1218 if (value != NULL) { 1219 env->ReleaseStringUTFChars(value, ccstrValue); 1220 } 1221 if (needFree) { 1222 FREE_C_HEAP_ARRAY(char, ccstrResult); 1223 } 1224 WB_END 1225 1226 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1227 WhiteBox::compilation_locked = true; 1228 WB_END 1229 1230 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1231 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1232 WhiteBox::compilation_locked = false; 1233 mo.notify_all(); 1234 WB_END 1235 1236 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 1237 // Force a code cache sweep and block until it finished 1238 NMethodSweeper::force_sweep(); 1239 WB_END 1240 1241 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1242 ResourceMark rm(THREAD); 1243 int len; 1244 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1245 return (StringTable::lookup(name, len) != NULL); 1246 WB_END 1247 1248 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1249 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1250 Universe::heap()->collect(GCCause::_wb_full_gc); 1251 #if INCLUDE_ALL_GCS 1252 if (UseG1GC) { 1253 // Needs to be cleared explicitly for G1 1254 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1255 } 1256 #endif // INCLUDE_ALL_GCS 1257 WB_END 1258 1259 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1260 Universe::heap()->collect(GCCause::_wb_young_gc); 1261 WB_END 1262 1263 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1264 // static+volatile in order to force the read to happen 1265 // (not be eliminated by the compiler) 1266 static char c; 1267 static volatile char* p; 1268 1269 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 1270 if (p == NULL) { 1271 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1272 } 1273 1274 c = *p; 1275 WB_END 1276 1277 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1278 const char* features = VM_Version::features_string(); 1279 ThreadToNativeFromVM ttn(thread); 1280 jstring features_string = env->NewStringUTF(features); 1281 1282 CHECK_JNI_EXCEPTION_(env, NULL); 1283 1284 return features_string; 1285 WB_END 1286 1287 int WhiteBox::get_blob_type(const CodeBlob* code) { 1288 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1289 if (code->is_aot()) { 1290 return -1; 1291 } 1292 return CodeCache::get_code_heap(code)->code_blob_type(); 1293 } 1294 1295 CodeHeap* WhiteBox::get_code_heap(int blob_type) { 1296 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1297 return CodeCache::get_code_heap(blob_type); 1298 } 1299 1300 struct CodeBlobStub { 1301 CodeBlobStub(const CodeBlob* blob) : 1302 name(os::strdup(blob->name())), 1303 size(blob->size()), 1304 blob_type(WhiteBox::get_blob_type(blob)), 1305 address((jlong) blob) { } 1306 ~CodeBlobStub() { os::free((void*) name); } 1307 const char* const name; 1308 const jint size; 1309 const jint blob_type; 1310 const jlong address; 1311 }; 1312 1313 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1314 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1315 CHECK_JNI_EXCEPTION_(env, NULL); 1316 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1317 1318 jstring name = env->NewStringUTF(cb->name); 1319 CHECK_JNI_EXCEPTION_(env, NULL); 1320 env->SetObjectArrayElement(result, 0, name); 1321 1322 jobject obj = integerBox(thread, env, cb->size); 1323 CHECK_JNI_EXCEPTION_(env, NULL); 1324 env->SetObjectArrayElement(result, 1, obj); 1325 1326 obj = integerBox(thread, env, cb->blob_type); 1327 CHECK_JNI_EXCEPTION_(env, NULL); 1328 env->SetObjectArrayElement(result, 2, obj); 1329 1330 obj = longBox(thread, env, cb->address); 1331 CHECK_JNI_EXCEPTION_(env, NULL); 1332 env->SetObjectArrayElement(result, 3, obj); 1333 1334 return result; 1335 } 1336 1337 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1338 ResourceMark rm(THREAD); 1339 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1340 CHECK_JNI_EXCEPTION_(env, NULL); 1341 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1342 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1343 jobjectArray result = NULL; 1344 if (code == NULL) { 1345 return result; 1346 } 1347 int comp_level = code->comp_level(); 1348 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size(); 1349 1350 ThreadToNativeFromVM ttn(thread); 1351 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1352 CHECK_JNI_EXCEPTION_(env, NULL); 1353 result = env->NewObjectArray(5, clazz, NULL); 1354 if (result == NULL) { 1355 return result; 1356 } 1357 1358 CodeBlobStub stub(code); 1359 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1360 CHECK_JNI_EXCEPTION_(env, NULL); 1361 env->SetObjectArrayElement(result, 0, codeBlob); 1362 1363 jobject level = integerBox(thread, env, comp_level); 1364 CHECK_JNI_EXCEPTION_(env, NULL); 1365 env->SetObjectArrayElement(result, 1, level); 1366 1367 jbyteArray insts = env->NewByteArray(insts_size); 1368 CHECK_JNI_EXCEPTION_(env, NULL); 1369 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1370 env->SetObjectArrayElement(result, 2, insts); 1371 1372 jobject id = integerBox(thread, env, code->compile_id()); 1373 CHECK_JNI_EXCEPTION_(env, NULL); 1374 env->SetObjectArrayElement(result, 3, id); 1375 1376 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1377 CHECK_JNI_EXCEPTION_(env, NULL); 1378 env->SetObjectArrayElement(result, 4, entry_point); 1379 1380 return result; 1381 WB_END 1382 1383 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1384 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1385 BufferBlob* blob; 1386 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1387 if (full_size < size) { 1388 full_size += align_up(size - full_size, oopSize); 1389 } 1390 { 1391 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1392 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1393 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1394 } 1395 // Track memory usage statistic after releasing CodeCache_lock 1396 MemoryService::track_code_cache_memory_usage(); 1397 return blob; 1398 } 1399 1400 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1401 if (size < 0) { 1402 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1403 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1404 } 1405 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1406 WB_END 1407 1408 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1409 if (addr == 0) { 1410 return; 1411 } 1412 BufferBlob::free((BufferBlob*) addr); 1413 WB_END 1414 1415 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1416 ResourceMark rm; 1417 GrowableArray<CodeBlobStub*> blobs; 1418 { 1419 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1420 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1421 if (heap == NULL) { 1422 return NULL; 1423 } 1424 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1425 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1426 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1427 new (stub) CodeBlobStub(cb); 1428 blobs.append(stub); 1429 } 1430 } 1431 if (blobs.length() == 0) { 1432 return NULL; 1433 } 1434 ThreadToNativeFromVM ttn(thread); 1435 jobjectArray result = NULL; 1436 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1437 CHECK_JNI_EXCEPTION_(env, NULL); 1438 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1439 CHECK_JNI_EXCEPTION_(env, NULL); 1440 if (result == NULL) { 1441 return result; 1442 } 1443 int i = 0; 1444 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1445 it != blobs.end(); ++it) { 1446 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1447 CHECK_JNI_EXCEPTION_(env, NULL); 1448 env->SetObjectArrayElement(result, i, obj); 1449 CHECK_JNI_EXCEPTION_(env, NULL); 1450 ++i; 1451 } 1452 return result; 1453 WB_END 1454 1455 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1456 return CompileBroker::get_compilation_activity_mode(); 1457 WB_END 1458 1459 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1460 if (addr == 0) { 1461 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1462 "WB_GetCodeBlob: addr is null"); 1463 } 1464 ThreadToNativeFromVM ttn(thread); 1465 CodeBlobStub stub((CodeBlob*) addr); 1466 return codeBlob2objectArray(thread, env, &stub); 1467 WB_END 1468 1469 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1470 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1471 CHECK_JNI_EXCEPTION_(env, 0); 1472 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1473 return (jlong) mh->method_data(); 1474 WB_END 1475 1476 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1477 return (jlong) Thread::current()->stack_size(); 1478 WB_END 1479 1480 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1481 JavaThread* t = JavaThread::current(); 1482 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size(); 1483 WB_END 1484 1485 1486 int WhiteBox::array_bytes_to_length(size_t bytes) { 1487 return Array<u1>::bytes_to_length(bytes); 1488 } 1489 1490 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1491 if (size < 0) { 1492 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1493 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1494 } 1495 1496 oop class_loader_oop = JNIHandles::resolve(class_loader); 1497 ClassLoaderData* cld = class_loader_oop != NULL 1498 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1499 : ClassLoaderData::the_null_class_loader_data(); 1500 1501 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1502 1503 return (jlong)(uintptr_t)metadata; 1504 WB_END 1505 1506 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 1507 oop class_loader_oop = JNIHandles::resolve(class_loader); 1508 ClassLoaderData* cld = class_loader_oop != NULL 1509 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1510 : ClassLoaderData::the_null_class_loader_data(); 1511 1512 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 1513 WB_END 1514 1515 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1516 jstring version, jstring location, jobjectArray packages)) 1517 ResourceMark rm(THREAD); 1518 1519 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages)); 1520 objArrayHandle packages_h(THREAD, packages_oop); 1521 int num_packages = (packages_h == NULL ? 0 : packages_h->length()); 1522 1523 char** pkgs = NULL; 1524 if (num_packages > 0) { 1525 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages); 1526 for (int x = 0; x < num_packages; x++) { 1527 oop pkg_str = packages_h->obj_at(x); 1528 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) { 1529 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 1530 err_msg("Bad package name")); 1531 } 1532 pkgs[x] = java_lang_String::as_utf8_string(pkg_str); 1533 } 1534 } 1535 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK); 1536 WB_END 1537 1538 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1539 ResourceMark rm(THREAD); 1540 char* package_name = NULL; 1541 if (package != NULL) { 1542 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1543 } 1544 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK); 1545 WB_END 1546 1547 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1548 ResourceMark rm(THREAD); 1549 char* package_name = NULL; 1550 if (package != NULL) { 1551 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1552 } 1553 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK); 1554 WB_END 1555 1556 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1557 ResourceMark rm(THREAD); 1558 char* package_name = NULL; 1559 if (package != NULL) { 1560 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1561 } 1562 Modules::add_module_exports(module, package_name, NULL, CHECK); 1563 WB_END 1564 1565 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1566 Modules::add_reads_module(from_module, source_module, CHECK); 1567 WB_END 1568 1569 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1570 if (inc < 0) { 1571 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1572 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1573 } 1574 1575 jlong max_size_t = (jlong) ((size_t) -1); 1576 if (inc > max_size_t) { 1577 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1578 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1579 } 1580 1581 size_t new_cap_until_GC = 0; 1582 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1583 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1584 if (!success) { 1585 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1586 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1587 "due to contention with another thread"); 1588 } 1589 return (jlong) new_cap_until_GC; 1590 WB_END 1591 1592 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1593 return (jlong) MetaspaceGC::capacity_until_GC(); 1594 WB_END 1595 1596 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb)) 1597 return MetaspaceGC::should_concurrent_collect(); 1598 WB_END 1599 1600 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb)) 1601 return (jlong)Metaspace::reserve_alignment(); 1602 WB_END 1603 1604 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue)) 1605 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ? 1606 Monitor::_safepoint_check_always : 1607 Monitor::_safepoint_check_never; 1608 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required), 1609 attemptedNoSafepointValue == JNI_TRUE); 1610 WB_END 1611 1612 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1613 oop obj_oop = JNIHandles::resolve(obj); 1614 return (jboolean) obj_oop->mark()->has_monitor(); 1615 WB_END 1616 1617 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1618 VM_ForceSafepoint force_safepoint_op; 1619 VMThread::execute(&force_safepoint_op); 1620 WB_END 1621 1622 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1623 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1624 return (jlong) ik->constants(); 1625 WB_END 1626 1627 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1628 return ConstantPool::CPCACHE_INDEX_TAG; 1629 WB_END 1630 1631 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1632 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1633 ConstantPool* cp = ik->constants(); 1634 if (cp->cache() == NULL) { 1635 return -1; 1636 } 1637 return cp->cache()->length(); 1638 WB_END 1639 1640 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1641 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1642 ConstantPool* cp = ik->constants(); 1643 if (cp->cache() == NULL) { 1644 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1645 } 1646 jint cpci = index; 1647 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1648 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1649 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1650 } 1651 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1652 return cpi; 1653 WB_END 1654 1655 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1656 return ConstantPool::encode_invokedynamic_index(index); 1657 WB_END 1658 1659 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1660 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1661 VMThread::execute(&clear_ics); 1662 WB_END 1663 1664 template <typename T> 1665 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1666 assert(value != NULL, "sanity"); 1667 if (method == NULL || name == NULL) { 1668 return false; 1669 } 1670 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1671 CHECK_JNI_EXCEPTION_(env, false); 1672 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1673 // can't be in VM when we call JNI 1674 ThreadToNativeFromVM ttnfv(thread); 1675 const char* flag_name = env->GetStringUTFChars(name, NULL); 1676 CHECK_JNI_EXCEPTION_(env, false); 1677 bool result = CompilerOracle::has_option_value(mh, flag_name, *value); 1678 env->ReleaseStringUTFChars(name, flag_name); 1679 return result; 1680 } 1681 1682 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1683 bool result; 1684 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1685 // can't be in VM when we call JNI 1686 ThreadToNativeFromVM ttnfv(thread); 1687 return booleanBox(thread, env, result); 1688 } 1689 return NULL; 1690 WB_END 1691 1692 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1693 intx result; 1694 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1695 // can't be in VM when we call JNI 1696 ThreadToNativeFromVM ttnfv(thread); 1697 return longBox(thread, env, result); 1698 } 1699 return NULL; 1700 WB_END 1701 1702 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1703 uintx result; 1704 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1705 // can't be in VM when we call JNI 1706 ThreadToNativeFromVM ttnfv(thread); 1707 return longBox(thread, env, result); 1708 } 1709 return NULL; 1710 WB_END 1711 1712 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1713 double result; 1714 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1715 // can't be in VM when we call JNI 1716 ThreadToNativeFromVM ttnfv(thread); 1717 return doubleBox(thread, env, result); 1718 } 1719 return NULL; 1720 WB_END 1721 1722 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1723 ccstr ccstrResult; 1724 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 1725 // can't be in VM when we call JNI 1726 ThreadToNativeFromVM ttnfv(thread); 1727 jstring result = env->NewStringUTF(ccstrResult); 1728 CHECK_JNI_EXCEPTION_(env, NULL); 1729 return result; 1730 } 1731 return NULL; 1732 WB_END 1733 1734 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 1735 oop obj_oop = JNIHandles::resolve(obj); 1736 return oopDesc::is_archive_object(obj_oop); 1737 WB_END 1738 1739 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 1740 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1741 WB_END 1742 1743 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env)) 1744 return !StringTable::shared_string_mapped(); 1745 WB_END 1746 1747 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz)) 1748 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 1749 if (k->is_instance_klass()) { 1750 InstanceKlass *ik = InstanceKlass::cast(k); 1751 ConstantPool *cp = ik->constants(); 1752 objArrayOop refs = cp->resolved_references(); 1753 return (jobject)JNIHandles::make_local(env, refs); 1754 } else { 1755 return NULL; 1756 } 1757 WB_END 1758 1759 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 1760 return MetaspaceShared::open_archive_heap_region_mapped(); 1761 WB_END 1762 1763 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env)) 1764 #if INCLUDE_CDS 1765 # ifdef _LP64 1766 if (!UseCompressedOops || !UseCompressedClassPointers) { 1767 // On 64-bit VMs, CDS is supported only with compressed oops/pointers 1768 return false; 1769 } 1770 # endif // _LP64 1771 return true; 1772 #else 1773 return false; 1774 #endif // INCLUDE_CDS 1775 WB_END 1776 1777 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env)) 1778 return MetaspaceShared::is_heap_object_archiving_allowed(); 1779 WB_END 1780 1781 1782 #if INCLUDE_CDS 1783 1784 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name)) 1785 ResourceMark rm; 1786 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 1787 int result = CDSOffsets::find_offset(c_name); 1788 return (jint)result; 1789 WB_END 1790 1791 #endif // INCLUDE_CDS 1792 1793 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 1794 class TraceSelfClosure : public ThreadClosure { 1795 jint _num_threads_completed; 1796 1797 void do_thread(Thread* th) { 1798 assert(th->is_Java_thread(), "sanity"); 1799 JavaThread* jt = (JavaThread*)th; 1800 ResourceMark rm; 1801 1802 jt->print_on(tty); 1803 jt->print_stack_on(tty); 1804 tty->cr(); 1805 Atomic::inc(&_num_threads_completed); 1806 } 1807 1808 public: 1809 TraceSelfClosure() : _num_threads_completed(0) {} 1810 1811 jint num_threads_completed() const { return _num_threads_completed; } 1812 }; 1813 TraceSelfClosure tsc; 1814 1815 if (all_threads) { 1816 Handshake::execute(&tsc); 1817 } else { 1818 oop thread_oop = JNIHandles::resolve(thread_handle); 1819 if (thread_oop != NULL) { 1820 JavaThread* target = java_lang_Thread::thread(thread_oop); 1821 Handshake::execute(&tsc, target); 1822 } 1823 } 1824 return tsc.num_threads_completed(); 1825 WB_END 1826 1827 //Some convenience methods to deal with objects from java 1828 int WhiteBox::offset_for_field(const char* field_name, oop object, 1829 Symbol* signature_symbol) { 1830 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 1831 Thread* THREAD = Thread::current(); 1832 1833 //Get the class of our object 1834 Klass* arg_klass = object->klass(); 1835 //Turn it into an instance-klass 1836 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 1837 1838 //Create symbols to look for in the class 1839 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), 1840 THREAD); 1841 1842 //To be filled in with an offset of the field we're looking for 1843 fieldDescriptor fd; 1844 1845 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 1846 if (res == NULL) { 1847 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 1848 name_symbol->as_C_string()); 1849 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 1850 } 1851 1852 //fetch the field at the offset we've found 1853 int dest_offset = fd.offset(); 1854 1855 return dest_offset; 1856 } 1857 1858 1859 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 1860 int offset = offset_for_field(field_name, object, 1861 vmSymbols::string_signature()); 1862 oop string = object->obj_field(offset); 1863 if (string == NULL) { 1864 return NULL; 1865 } 1866 const char* ret = java_lang_String::as_utf8_string(string); 1867 return ret; 1868 } 1869 1870 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 1871 int offset = 1872 offset_for_field(field_name, object, vmSymbols::bool_signature()); 1873 bool ret = (object->bool_field(offset) == JNI_TRUE); 1874 return ret; 1875 } 1876 1877 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 1878 ResourceMark rm; 1879 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1880 1881 // one by one registration natives for exception catching 1882 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 1883 CHECK_JNI_EXCEPTION(env); 1884 for (int i = 0, n = method_count; i < n; ++i) { 1885 // Skip dummy entries 1886 if (method_array[i].fnPtr == NULL) continue; 1887 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 1888 jthrowable throwable_obj = env->ExceptionOccurred(); 1889 if (throwable_obj != NULL) { 1890 env->ExceptionClear(); 1891 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 1892 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 1893 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 1894 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 1895 method_array[i].name, method_array[i].signature); 1896 } 1897 } else { 1898 // Registration failed unexpectedly. 1899 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 1900 method_array[i].name, method_array[i].signature); 1901 env->UnregisterNatives(wbclass); 1902 break; 1903 } 1904 } 1905 } 1906 } 1907 1908 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 1909 // can't be in VM when we call JNI 1910 ThreadToNativeFromVM ttnfv(thread); 1911 const char* dir = env->GetStringUTFChars(compDirect, NULL); 1912 CHECK_JNI_EXCEPTION_(env, 0); 1913 int ret; 1914 { 1915 ThreadInVMfromNative ttvfn(thread); // back to VM 1916 ret = DirectivesParser::parse_string(dir, tty); 1917 } 1918 env->ReleaseStringUTFChars(compDirect, dir); 1919 // -1 for error parsing directive. Return 0 as number of directives added. 1920 if (ret == -1) { 1921 ret = 0; 1922 } 1923 return (jint) ret; 1924 WB_END 1925 1926 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 1927 DirectivesStack::pop(count); 1928 WB_END 1929 1930 // Checks that the library libfile has the noexecstack bit set. 1931 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 1932 jboolean ret = false; 1933 #ifdef LINUX 1934 // Can't be in VM when we call JNI. 1935 ThreadToNativeFromVM ttnfv(thread); 1936 const char* lf = env->GetStringUTFChars(libfile, NULL); 1937 CHECK_JNI_EXCEPTION_(env, 0); 1938 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 1939 env->ReleaseStringUTFChars(libfile, lf); 1940 #endif 1941 return ret; 1942 WB_END 1943 1944 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 1945 LINUX_ONLY(return OSContainer::is_containerized();) 1946 return false; 1947 WB_END 1948 1949 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 1950 os::print_os_info(tty); 1951 WB_END 1952 1953 // Elf decoder 1954 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 1955 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 1956 ElfFile::_do_not_cache_elf_section = true; 1957 #endif 1958 WB_END 1959 1960 1961 #define CC (char*) 1962 1963 static JNINativeMethod methods[] = { 1964 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 1965 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 1966 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 1967 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 1968 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 1969 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 1970 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 1971 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 1972 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 1973 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, 1974 {CC"parseCommandLine0", 1975 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 1976 (void*) &WB_ParseCommandLine 1977 }, 1978 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1979 (void*)&WB_AddToBootstrapClassLoaderSearch}, 1980 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1981 (void*)&WB_AddToSystemClassLoaderSearch}, 1982 {CC"getCompressedOopsMaxHeapSize", CC"()J", 1983 (void*)&WB_GetCompressedOopsMaxHeapSize}, 1984 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 1985 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 1986 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 1987 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 1988 #if INCLUDE_CDS 1989 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName}, 1990 #endif 1991 #if INCLUDE_ALL_GCS 1992 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 1993 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 1994 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 1995 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 1996 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 1997 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 1998 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 1999 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 2000 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 2001 (void*)&WB_G1AuxiliaryMemoryUsage }, 2002 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 2003 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 2004 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 2005 #endif // INCLUDE_ALL_GCS 2006 #if INCLUDE_NMT 2007 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 2008 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 2009 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 2010 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 2011 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 2012 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 2013 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 2014 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 2015 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 2016 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 2017 #endif // INCLUDE_NMT 2018 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 2019 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 2020 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 2021 (void*)&WB_DeoptimizeMethod }, 2022 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 2023 (void*)&WB_IsMethodCompiled }, 2024 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 2025 (void*)&WB_IsMethodCompilable}, 2026 {CC"isMethodQueuedForCompilation0", 2027 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 2028 {CC"isIntrinsicAvailable0", 2029 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2030 (void*)&WB_IsIntrinsicAvailable}, 2031 {CC"makeMethodNotCompilable0", 2032 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2033 {CC"testSetDontInlineMethod0", 2034 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2035 {CC"getMethodCompilationLevel0", 2036 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2037 {CC"getMethodEntryBci0", 2038 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2039 {CC"getCompileQueueSize", 2040 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2041 {CC"testSetForceInlineMethod0", 2042 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2043 {CC"enqueueMethodForCompilation0", 2044 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2045 {CC"enqueueInitializerForCompilation0", 2046 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2047 {CC"clearMethodState0", 2048 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2049 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2050 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2051 {CC"matchesMethod", 2052 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2053 (void*)&WB_MatchesMethod}, 2054 {CC"matchesInline", 2055 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2056 (void*)&WB_MatchesInline}, 2057 {CC"shouldPrintAssembly", 2058 CC"(Ljava/lang/reflect/Executable;I)Z", 2059 (void*)&WB_ShouldPrintAssembly}, 2060 2061 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2062 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2063 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2064 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2065 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2066 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2067 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2068 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2069 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2070 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2071 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2072 (void*)&WB_SetStringVMFlag}, 2073 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2074 (void*)&WB_GetBooleanVMFlag}, 2075 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2076 (void*)&WB_GetIntVMFlag}, 2077 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2078 (void*)&WB_GetUintVMFlag}, 2079 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2080 (void*)&WB_GetIntxVMFlag}, 2081 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2082 (void*)&WB_GetUintxVMFlag}, 2083 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2084 (void*)&WB_GetUint64VMFlag}, 2085 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2086 (void*)&WB_GetSizeTVMFlag}, 2087 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2088 (void*)&WB_GetDoubleVMFlag}, 2089 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2090 (void*)&WB_GetStringVMFlag}, 2091 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2092 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2093 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2094 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2095 {CC"allocateMetaspace", 2096 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2097 {CC"freeMetaspace", 2098 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 2099 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2100 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2101 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect }, 2102 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment }, 2103 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2104 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2105 (void*)&WB_GetNMethod }, 2106 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 2107 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2108 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2109 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2110 {CC"getCompilationActivityMode", 2111 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2112 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2113 (void*)&WB_GetMethodData }, 2114 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2115 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2116 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2117 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2118 (void*)&WB_DefineModule }, 2119 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2120 (void*)&WB_AddModuleExports }, 2121 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2122 (void*)&WB_AddReadsModule }, 2123 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2124 (void*)&WB_AddModuleExportsToAllUnnamed }, 2125 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2126 (void*)&WB_AddModuleExportsToAll }, 2127 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls }, 2128 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2129 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2130 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2131 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 2132 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 2133 {CC"remapInstructionOperandFromCPCache0", 2134 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 2135 {CC"encodeConstantPoolIndyIndex0", 2136 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 2137 {CC"getMethodBooleanOption", 2138 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2139 (void*)&WB_GetMethodBooleaneOption}, 2140 {CC"getMethodIntxOption", 2141 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2142 (void*)&WB_GetMethodIntxOption}, 2143 {CC"getMethodUintxOption", 2144 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2145 (void*)&WB_GetMethodUintxOption}, 2146 {CC"getMethodDoubleOption", 2147 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2148 (void*)&WB_GetMethodDoubleOption}, 2149 {CC"getMethodStringOption", 2150 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2151 (void*)&WB_GetMethodStringOption}, 2152 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 2153 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2154 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored }, 2155 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 2156 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2157 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild }, 2158 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported }, 2159 2160 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2161 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2162 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2163 (void*)&WB_AddCompilerDirective }, 2164 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2165 {CC"currentGC", CC"()I", (void*)&WB_CurrentGC}, 2166 {CC"allSupportedGC", CC"()I", (void*)&WB_AllSupportedGC}, 2167 {CC"gcSelectedByErgo", CC"()Z", (void*)&WB_GCSelectedByErgo}, 2168 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl}, 2169 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;", 2170 (void*)&WB_GetConcurrentGCPhases}, 2171 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z", 2172 (void*)&WB_RequestConcurrentGCPhase}, 2173 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2174 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2175 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2176 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2177 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 2178 }; 2179 2180 2181 #undef CC 2182 2183 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2184 { 2185 if (WhiteBoxAPI) { 2186 // Make sure that wbclass is loaded by the null classloader 2187 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass()); 2188 Handle loader(THREAD, ik->class_loader()); 2189 if (loader.is_null()) { 2190 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2191 WhiteBox::set_used(); 2192 } 2193 } 2194 } 2195 JVM_END