1 /* 2 * Copyright (c) 2012, 2020, 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/classLoaderDataGraph.hpp" 30 #include "classfile/javaClasses.inline.hpp" 31 #include "classfile/modules.hpp" 32 #include "classfile/protectionDomainCache.hpp" 33 #include "classfile/stringTable.hpp" 34 #include "classfile/symbolTable.hpp" 35 #include "code/codeCache.hpp" 36 #include "compiler/compilationPolicy.hpp" 37 #include "compiler/methodMatcher.hpp" 38 #include "compiler/directivesParser.hpp" 39 #include "gc/shared/concurrentGCBreakpoints.hpp" 40 #include "gc/shared/gcConfig.hpp" 41 #include "gc/shared/genArguments.hpp" 42 #include "gc/shared/genCollectedHeap.hpp" 43 #include "jvmtifiles/jvmtiEnv.hpp" 44 #include "logging/log.hpp" 45 #include "memory/filemap.hpp" 46 #include "memory/heapShared.inline.hpp" 47 #include "memory/metaspaceShared.hpp" 48 #include "memory/metadataFactory.hpp" 49 #include "memory/iterator.hpp" 50 #include "memory/resourceArea.hpp" 51 #include "memory/universe.hpp" 52 #include "memory/oopFactory.hpp" 53 #include "oops/array.hpp" 54 #include "oops/compressedOops.hpp" 55 #include "oops/constantPool.inline.hpp" 56 #include "oops/method.inline.hpp" 57 #include "oops/objArrayKlass.hpp" 58 #include "oops/objArrayOop.inline.hpp" 59 #include "oops/oop.inline.hpp" 60 #include "oops/typeArrayOop.inline.hpp" 61 #include "prims/resolvedMethodTable.hpp" 62 #include "prims/wbtestmethods/parserTests.hpp" 63 #include "prims/whitebox.inline.hpp" 64 #include "runtime/arguments.hpp" 65 #include "runtime/atomic.hpp" 66 #include "runtime/deoptimization.hpp" 67 #include "runtime/fieldDescriptor.inline.hpp" 68 #include "runtime/flags/jvmFlag.hpp" 69 #include "runtime/frame.inline.hpp" 70 #include "runtime/handles.inline.hpp" 71 #include "runtime/handshake.hpp" 72 #include "runtime/interfaceSupport.inline.hpp" 73 #include "runtime/javaCalls.hpp" 74 #include "runtime/jniHandles.inline.hpp" 75 #include "runtime/os.hpp" 76 #include "runtime/sweeper.hpp" 77 #include "runtime/synchronizer.hpp" 78 #include "runtime/thread.hpp" 79 #include "runtime/threadSMR.hpp" 80 #include "runtime/vm_version.hpp" 81 #include "services/memoryService.hpp" 82 #include "utilities/align.hpp" 83 #include "utilities/debug.hpp" 84 #include "utilities/elfFile.hpp" 85 #include "utilities/exceptions.hpp" 86 #include "utilities/macros.hpp" 87 #if INCLUDE_CDS 88 #include "prims/cdsoffsets.hpp" 89 #endif // INCLUDE_CDS 90 #if INCLUDE_G1GC 91 #include "gc/g1/g1Arguments.hpp" 92 #include "gc/g1/g1CollectedHeap.inline.hpp" 93 #include "gc/g1/g1ConcurrentMark.hpp" 94 #include "gc/g1/g1ConcurrentMarkThread.hpp" 95 #include "gc/g1/heapRegionRemSet.hpp" 96 #include "gc/g1/heterogeneousHeapRegionManager.hpp" 97 #endif // INCLUDE_G1GC 98 #if INCLUDE_PARALLELGC 99 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 100 #endif // INCLUDE_PARALLELGC 101 #if INCLUDE_NMT 102 #include "services/mallocSiteTable.hpp" 103 #include "services/memTracker.hpp" 104 #include "utilities/nativeCallStack.hpp" 105 #endif // INCLUDE_NMT 106 #if INCLUDE_AOT 107 #include "aot/aotLoader.hpp" 108 #endif // INCLUDE_AOT 109 110 #ifdef LINUX 111 #include "osContainer_linux.hpp" 112 #include "cgroupSubsystem_linux.hpp" 113 #endif 114 115 #define SIZE_T_MAX_VALUE ((size_t) -1) 116 117 #define CHECK_JNI_EXCEPTION_(env, value) \ 118 do { \ 119 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 120 THREAD->clear_pending_jni_exception_check(); \ 121 if (HAS_PENDING_EXCEPTION) { \ 122 return(value); \ 123 } \ 124 } while (0) 125 126 #define CHECK_JNI_EXCEPTION(env) \ 127 do { \ 128 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 129 THREAD->clear_pending_jni_exception_check(); \ 130 if (HAS_PENDING_EXCEPTION) { \ 131 return; \ 132 } \ 133 } while (0) 134 135 bool WhiteBox::_used = false; 136 volatile bool WhiteBox::compilation_locked = false; 137 138 class VM_WhiteBoxOperation : public VM_Operation { 139 public: 140 VM_WhiteBoxOperation() { } 141 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 142 bool allow_nested_vm_operations() const { return true; } 143 }; 144 145 146 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 147 return (jlong)(void*)JNIHandles::resolve(obj); 148 WB_END 149 150 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 151 return heapOopSize; 152 WB_END 153 154 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 155 return os::vm_page_size(); 156 WB_END 157 158 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 159 return os::vm_allocation_granularity(); 160 WB_END 161 162 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 163 return os::large_page_size(); 164 WB_END 165 166 class WBIsKlassAliveClosure : public LockedClassesDo { 167 Symbol* _name; 168 int _count; 169 public: 170 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {} 171 172 void do_klass(Klass* k) { 173 Symbol* ksym = k->name(); 174 if (ksym->fast_compare(_name) == 0) { 175 _count++; 176 } 177 } 178 179 int count() const { 180 return _count; 181 } 182 }; 183 184 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name)) 185 oop h_name = JNIHandles::resolve(name); 186 if (h_name == NULL) return false; 187 Symbol* sym = java_lang_String::as_symbol(h_name); 188 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 189 190 WBIsKlassAliveClosure closure(sym); 191 ClassLoaderDataGraph::classes_do(&closure); 192 193 // Return the count of alive classes with this name. 194 return closure.count(); 195 WB_END 196 197 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name)) 198 oop h_name = JNIHandles::resolve(name); 199 if (h_name == NULL) return false; 200 Symbol* sym = java_lang_String::as_symbol(h_name); 201 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 202 return (jint)sym->refcount(); 203 WB_END 204 205 206 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 207 #if INCLUDE_JVMTI 208 ResourceMark rm; 209 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 210 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 211 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 212 assert(err == JVMTI_ERROR_NONE, "must not fail"); 213 #endif 214 } 215 WB_END 216 217 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 218 #if INCLUDE_JVMTI 219 ResourceMark rm; 220 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 221 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 222 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 223 assert(err == JVMTI_ERROR_NONE, "must not fail"); 224 #endif 225 } 226 WB_END 227 228 229 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 230 return (jlong)Arguments::max_heap_for_compressed_oops(); 231 } 232 WB_END 233 234 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 235 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " " 236 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 237 MinHeapSize, 238 InitialHeapSize, 239 MaxHeapSize, 240 SpaceAlignment, 241 HeapAlignment); 242 } 243 WB_END 244 245 #ifndef PRODUCT 246 // Forward declaration 247 void TestReservedSpace_test(); 248 void TestReserveMemorySpecial_test(); 249 void TestVirtualSpace_test(); 250 #endif 251 252 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) 253 #ifndef PRODUCT 254 TestReservedSpace_test(); 255 TestReserveMemorySpecial_test(); 256 TestVirtualSpace_test(); 257 #endif 258 WB_END 259 260 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 261 size_t granularity = os::vm_allocation_granularity(); 262 ReservedHeapSpace rhs(100 * granularity, granularity, false); 263 VirtualSpace vs; 264 vs.initialize(rhs, 50 * granularity); 265 266 // Check if constraints are complied 267 if (!( UseCompressedOops && rhs.base() != NULL && 268 CompressedOops::base() != NULL && 269 CompressedOops::use_implicit_null_checks() )) { 270 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 271 "\tUseCompressedOops is %d\n" 272 "\trhs.base() is " PTR_FORMAT "\n" 273 "\tCompressedOops::base() is " PTR_FORMAT "\n" 274 "\tCompressedOops::use_implicit_null_checks() is %d", 275 UseCompressedOops, 276 p2i(rhs.base()), 277 p2i(CompressedOops::base()), 278 CompressedOops::use_implicit_null_checks()); 279 return; 280 } 281 tty->print_cr("Reading from no access area... "); 282 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 283 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 284 WB_END 285 286 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 287 size_t magnitude, size_t iterations) { 288 size_t granularity = os::vm_allocation_granularity(); 289 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false); 290 VirtualSpace vs; 291 if (!vs.initialize(rhs, 0)) { 292 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 293 return 3; 294 } 295 296 int seed = os::random(); 297 tty->print_cr("Random seed is %d", seed); 298 os::init_random(seed); 299 300 for (size_t i = 0; i < iterations; i++) { 301 302 // Whether we will shrink or grow 303 bool shrink = os::random() % 2L == 0; 304 305 // Get random delta to resize virtual space 306 size_t delta = (size_t)os::random() % magnitude; 307 308 // If we are about to shrink virtual space below zero, then expand instead 309 if (shrink && vs.committed_size() < delta) { 310 shrink = false; 311 } 312 313 // Resizing by delta 314 if (shrink) { 315 vs.shrink_by(delta); 316 } else { 317 // If expanding fails expand_by will silently return false 318 vs.expand_by(delta, true); 319 } 320 } 321 return 0; 322 } 323 324 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 325 jlong reserved_space_size, jlong magnitude, jlong iterations)) 326 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 327 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 328 iterations); 329 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 330 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 331 return 1; 332 } 333 334 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 335 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 336 if (sizeof(size_t) < sizeof(jlong)) { 337 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; 338 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 339 || iterations > size_t_max_value) { 340 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 341 return 2; 342 } 343 } 344 345 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 346 (size_t) magnitude, (size_t) iterations); 347 WB_END 348 349 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name)) 350 return GCConfig::is_gc_supported((CollectedHeap::Name)name); 351 WB_END 352 353 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name)) 354 return GCConfig::is_gc_selected((CollectedHeap::Name)name); 355 WB_END 356 357 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o)) 358 return GCConfig::is_gc_selected_ergonomically(); 359 WB_END 360 361 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 362 oop p = JNIHandles::resolve(obj); 363 #if INCLUDE_G1GC 364 if (UseG1GC) { 365 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 366 const HeapRegion* hr = g1h->heap_region_containing(p); 367 if (hr == NULL) { 368 return false; 369 } 370 return !(hr->is_young()); 371 } 372 #endif 373 #if INCLUDE_PARALLELGC 374 if (UseParallelGC) { 375 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 376 return !psh->is_in_young(p); 377 } 378 #endif 379 #if INCLUDE_ZGC 380 if (UseZGC) { 381 return Universe::heap()->is_in(p); 382 } 383 #endif 384 GenCollectedHeap* gch = GenCollectedHeap::heap(); 385 return !gch->is_in_young(p); 386 WB_END 387 388 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 389 oop p = JNIHandles::resolve(obj); 390 return p->size() * HeapWordSize; 391 WB_END 392 393 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 394 return (jlong)SpaceAlignment; 395 WB_END 396 397 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 398 return (jlong)HeapAlignment; 399 WB_END 400 401 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o)) 402 return Universe::heap()->supports_concurrent_gc_breakpoints(); 403 WB_END 404 405 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o)) 406 ConcurrentGCBreakpoints::acquire_control(); 407 WB_END 408 409 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o)) 410 ConcurrentGCBreakpoints::release_control(); 411 WB_END 412 413 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o)) 414 ConcurrentGCBreakpoints::run_to_idle(); 415 WB_END 416 417 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at)) 418 Handle h_name(THREAD, JNIHandles::resolve(at)); 419 ResourceMark rm; 420 const char* c_name = java_lang_String::as_utf8_string(h_name()); 421 return ConcurrentGCBreakpoints::run_to(c_name); 422 WB_END 423 424 #if INCLUDE_G1GC 425 426 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 427 if (UseG1GC) { 428 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 429 oop result = JNIHandles::resolve(obj); 430 const HeapRegion* hr = g1h->heap_region_containing(result); 431 return hr->is_humongous(); 432 } 433 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 434 WB_END 435 436 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 437 if (UseG1GC) { 438 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 439 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 440 return hr->is_humongous(); 441 } 442 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 443 WB_END 444 445 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 446 if (UseG1GC) { 447 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 448 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 449 return hr->is_free(); 450 } 451 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 452 WB_END 453 454 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 455 if (UseG1GC) { 456 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 457 size_t nr = g1h->max_regions(); 458 return (jlong)nr; 459 } 460 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 461 WB_END 462 463 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 464 if (UseG1GC) { 465 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 466 size_t nr = g1h->num_free_regions(); 467 return (jlong)nr; 468 } 469 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 470 WB_END 471 472 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 473 if (UseG1GC) { 474 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 475 return g1h->concurrent_mark()->cm_thread()->during_cycle(); 476 } 477 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 478 WB_END 479 480 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o)) 481 if (UseG1GC) { 482 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 483 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) { 484 g1h->collect(GCCause::_wb_conc_mark); 485 return true; 486 } 487 return false; 488 } 489 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled"); 490 WB_END 491 492 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 493 if (UseG1GC) { 494 return (jint)HeapRegion::GrainBytes; 495 } 496 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 497 WB_END 498 499 #endif // INCLUDE_G1GC 500 501 #if INCLUDE_G1GC || INCLUDE_PARALLELGC 502 WB_ENTRY(jlong, WB_DramReservedStart(JNIEnv* env, jobject o)) 503 #if INCLUDE_G1GC 504 if (UseG1GC) { 505 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 506 if (g1h->is_heterogeneous_heap()) { 507 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_dram(); 508 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes); 509 } else { 510 return (jlong)g1h->base(); 511 } 512 } 513 #endif // INCLUDE_G1GC 514 #if INCLUDE_PARALLELGC 515 if (UseParallelGC) { 516 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 517 if (AllocateOldGenAt != NULL) { 518 MemRegion reserved = ps_heap->young_gen()->reserved(); 519 return (jlong)reserved.start(); 520 } else { 521 return (jlong)ps_heap->base(); 522 } 523 } 524 #endif // INCLUDE_PARALLELGC 525 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedStart: enabled only for G1 and Parallel GC"); 526 WB_END 527 528 WB_ENTRY(jlong, WB_DramReservedEnd(JNIEnv* env, jobject o)) 529 #if INCLUDE_G1GC 530 if (UseG1GC) { 531 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 532 if (g1h->is_heterogeneous_heap()) { 533 uint end_region = HeterogeneousHeapRegionManager::manager()->end_index_of_dram(); 534 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1); 535 } else { 536 return (jlong)g1h->base() + G1Arguments::heap_max_size_bytes(); 537 } 538 } 539 #endif // INCLUDE_G1GC 540 #if INCLUDE_PARALLELGC 541 if (UseParallelGC) { 542 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 543 if (AllocateOldGenAt != NULL) { 544 MemRegion reserved = ps_heap->young_gen()->reserved(); 545 return (jlong)reserved.end(); 546 } else { 547 return (jlong)ps_heap->reserved_region().end(); 548 } 549 } 550 #endif // INCLUDE_PARALLELGC 551 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedEnd: enabled only for G1 and Parallel GC"); 552 WB_END 553 554 WB_ENTRY(jlong, WB_NvdimmReservedStart(JNIEnv* env, jobject o)) 555 #if INCLUDE_G1GC 556 if (UseG1GC) { 557 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 558 if (g1h->is_heterogeneous_heap()) { 559 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm(); 560 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes); 561 } else { 562 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 563 } 564 } 565 #endif // INCLUDE_G1GC 566 #if INCLUDE_PARALLELGC 567 if (UseParallelGC) { 568 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 569 if (AllocateOldGenAt != NULL) { 570 MemRegion reserved = ps_heap->old_gen()->reserved(); 571 return (jlong)reserved.start(); 572 } else { 573 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 574 } 575 } 576 #endif // INCLUDE_PARALLELGC 577 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: enabled only for G1 and Parallel GC"); 578 WB_END 579 580 WB_ENTRY(jlong, WB_NvdimmReservedEnd(JNIEnv* env, jobject o)) 581 #if INCLUDE_G1GC 582 if (UseG1GC) { 583 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 584 if (g1h->is_heterogeneous_heap()) { 585 uint end_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm(); 586 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1); 587 } else { 588 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 589 } 590 } 591 #endif // INCLUDE_G1GC 592 #if INCLUDE_PARALLELGC 593 if (UseParallelGC) { 594 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 595 if (AllocateOldGenAt != NULL) { 596 MemRegion reserved = ps_heap->old_gen()->reserved(); 597 return (jlong)reserved.end(); 598 } else { 599 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 600 } 601 } 602 #endif // INCLUDE_PARALLELGC 603 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: enabled only for G1 and Parallel GC"); 604 WB_END 605 606 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC 607 608 #if INCLUDE_PARALLELGC 609 610 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 611 if (UseParallelGC) { 612 return GenAlignment; 613 } 614 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 615 WB_END 616 617 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 618 if (UseParallelGC) { 619 return GenAlignment; 620 } 621 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 622 WB_END 623 624 #endif // INCLUDE_PARALLELGC 625 626 #if INCLUDE_G1GC 627 628 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 629 if (UseG1GC) { 630 ResourceMark rm(THREAD); 631 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 632 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 633 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 634 return JNIHandles::make_local(env, h()); 635 } 636 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 637 WB_END 638 639 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o)) 640 if (UseG1GC) { 641 G1NUMA* numa = G1NUMA::numa(); 642 return (jint)numa->num_active_nodes(); 643 } 644 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled"); 645 WB_END 646 647 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o)) 648 if (UseG1GC) { 649 G1NUMA* numa = G1NUMA::numa(); 650 int num_node_ids = (int)numa->num_active_nodes(); 651 const int* node_ids = numa->node_ids(); 652 653 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL); 654 for (int i = 0; i < num_node_ids; i++) { 655 result->int_at_put(i, (jint)node_ids[i]); 656 } 657 return (jintArray) JNIHandles::make_local(env, result); 658 } 659 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled"); 660 WB_END 661 662 class OldRegionsLivenessClosure: public HeapRegionClosure { 663 664 private: 665 const int _liveness; 666 size_t _total_count; 667 size_t _total_memory; 668 size_t _total_memory_to_free; 669 670 public: 671 OldRegionsLivenessClosure(int liveness) : 672 _liveness(liveness), 673 _total_count(0), 674 _total_memory(0), 675 _total_memory_to_free(0) { } 676 677 size_t total_count() { return _total_count; } 678 size_t total_memory() { return _total_memory; } 679 size_t total_memory_to_free() { return _total_memory_to_free; } 680 681 bool do_heap_region(HeapRegion* r) { 682 if (r->is_old()) { 683 size_t prev_live = r->marked_bytes(); 684 size_t live = r->live_bytes(); 685 size_t size = r->used(); 686 size_t reg_size = HeapRegion::GrainBytes; 687 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 688 _total_memory += size; 689 ++_total_count; 690 if (size == reg_size) { 691 // we don't include non-full regions since they are unlikely included in mixed gc 692 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 693 _total_memory_to_free += size - prev_live; 694 } 695 } 696 } 697 return false; 698 } 699 }; 700 701 702 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 703 if (!UseG1GC) { 704 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 705 } 706 if (liveness < 0) { 707 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 708 } 709 710 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 711 OldRegionsLivenessClosure rli(liveness); 712 g1h->heap_region_iterate(&rli); 713 714 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 715 result->long_at_put(0, rli.total_count()); 716 result->long_at_put(1, rli.total_memory()); 717 result->long_at_put(2, rli.total_memory_to_free()); 718 return (jlongArray) JNIHandles::make_local(env, result); 719 WB_END 720 721 #endif // INCLUDE_G1GC 722 723 #if INCLUDE_NMT 724 // Alloc memory using the test memory type so that we can use that to see if 725 // NMT picks it up correctly 726 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 727 jlong addr = 0; 728 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 729 return addr; 730 WB_END 731 732 // Alloc memory with pseudo call stack. The test can create psudo malloc 733 // allocation site to stress the malloc tracking. 734 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 735 address pc = (address)(size_t)pseudo_stack; 736 NativeCallStack stack(&pc, 1); 737 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 738 WB_END 739 740 // Alloc memory with pseudo call stack and specific memory type. 741 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type)) 742 address pc = (address)(size_t)pseudo_stack; 743 NativeCallStack stack(&pc, 1); 744 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack); 745 WB_END 746 747 // Free the memory allocated by NMTAllocTest 748 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 749 os::free((void*)(uintptr_t)mem); 750 WB_END 751 752 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 753 jlong addr = 0; 754 755 addr = (jlong)(uintptr_t)os::reserve_memory(size); 756 MemTracker::record_virtual_memory_type((address)addr, mtTest); 757 758 return addr; 759 WB_END 760 761 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size)) 762 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr); 763 MemTracker::record_virtual_memory_type((address)addr, mtTest); 764 765 return addr; 766 WB_END 767 768 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 769 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 770 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 771 WB_END 772 773 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 774 os::uncommit_memory((char *)(uintptr_t)addr, size); 775 WB_END 776 777 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 778 os::release_memory((char *)(uintptr_t)addr, size); 779 WB_END 780 781 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env)) 782 // Test that we can downgrade NMT levels but not upgrade them. 783 if (MemTracker::tracking_level() == NMT_off) { 784 MemTracker::transition_to(NMT_off); 785 return MemTracker::tracking_level() == NMT_off; 786 } else { 787 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking"); 788 MemTracker::transition_to(NMT_summary); 789 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now"); 790 791 // Can't go to detail once NMT is set to summary. 792 MemTracker::transition_to(NMT_detail); 793 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now"); 794 795 // Shutdown sets tracking level to minimal. 796 MemTracker::shutdown(); 797 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); 798 799 // Once the tracking level is minimal, we cannot increase to summary. 800 // The code ignores this request instead of asserting because if the malloc site 801 // table overflows in another thread, it tries to change the code to summary. 802 MemTracker::transition_to(NMT_summary); 803 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 804 805 // Really can never go up to detail, verify that the code would never do this. 806 MemTracker::transition_to(NMT_detail); 807 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 808 return MemTracker::tracking_level() == NMT_minimal; 809 } 810 WB_END 811 812 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 813 int hash_size = MallocSiteTable::hash_buckets(); 814 assert(hash_size > 0, "NMT hash_size should be > 0"); 815 return (jint)hash_size; 816 WB_END 817 818 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size)) 819 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size)); 820 return (jlong)arena; 821 WB_END 822 823 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena)) 824 Arena* a = (Arena*)arena; 825 delete a; 826 WB_END 827 828 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size)) 829 Arena* a = (Arena*)arena; 830 a->Amalloc(size_t(size)); 831 WB_END 832 #endif // INCLUDE_NMT 833 834 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 835 assert(method != NULL, "method should not be null"); 836 ThreadToNativeFromVM ttn(thread); 837 return env->FromReflectedMethod(method); 838 } 839 840 static CompLevel highestCompLevel() { 841 return TieredCompilation ? MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) : CompLevel_highest_tier; 842 } 843 844 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 845 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 846 private: 847 int _result; 848 const bool _make_not_entrant; 849 public: 850 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 851 _result(0), _make_not_entrant(make_not_entrant) { } 852 int result() const { return _result; } 853 854 void doit() { 855 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 856 if (t->has_last_Java_frame()) { 857 for (StackFrameStream fst(t, false); !fst.is_done(); fst.next()) { 858 frame* f = fst.current(); 859 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 860 Deoptimization::deoptimize(t, *f); 861 if (_make_not_entrant) { 862 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 863 assert(cm != NULL, "sanity check"); 864 cm->make_not_entrant(); 865 } 866 ++_result; 867 } 868 } 869 } 870 } 871 } 872 }; 873 874 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 875 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 876 VMThread::execute(&op); 877 return op.result(); 878 WB_END 879 880 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 881 CodeCache::mark_all_nmethods_for_deoptimization(); 882 Deoptimization::deoptimize_all_marked(); 883 WB_END 884 885 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 886 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 887 int result = 0; 888 CHECK_JNI_EXCEPTION_(env, result); 889 MutexLocker mu(Compile_lock); 890 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 891 if (is_osr) { 892 result += mh->mark_osr_nmethods(); 893 } else if (mh->code() != NULL) { 894 mh->code()->mark_for_deoptimization(); 895 ++result; 896 } 897 result += CodeCache::mark_for_deoptimization(mh()); 898 if (result > 0) { 899 Deoptimization::deoptimize_all_marked(); 900 } 901 return result; 902 WB_END 903 904 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 905 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 906 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 907 MutexLocker mu(Compile_lock); 908 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 909 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 910 if (code == NULL) { 911 return JNI_FALSE; 912 } 913 return (code->is_alive() && !code->is_marked_for_deoptimization()); 914 WB_END 915 916 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 917 if (method == NULL || comp_level > highestCompLevel()) { 918 return false; 919 } 920 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 921 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 922 MutexLocker mu(Compile_lock); 923 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 924 if (is_osr) { 925 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); 926 } else { 927 return CompilationPolicy::can_be_compiled(mh, comp_level); 928 } 929 WB_END 930 931 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 932 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 933 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 934 MutexLocker mu(Compile_lock); 935 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 936 return mh->queued_for_compilation(); 937 WB_END 938 939 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 940 if (compLevel < CompLevel_none || compLevel > highestCompLevel()) { 941 return false; // Intrinsic is not available on a non-existent compilation level. 942 } 943 jmethodID method_id, compilation_context_id; 944 method_id = reflected_method_to_jmid(thread, env, method); 945 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 946 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 947 948 DirectiveSet* directive; 949 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 950 assert(comp != NULL, "compiler not available"); 951 if (compilation_context != NULL) { 952 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 953 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 954 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 955 directive = DirectivesStack::getMatchingDirective(cch, comp); 956 } else { 957 // Calling with NULL matches default directive 958 directive = DirectivesStack::getDefaultDirective(comp); 959 } 960 bool result = comp->is_intrinsic_available(mh, directive); 961 DirectivesStack::release(directive); 962 return result; 963 WB_END 964 965 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 966 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 967 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 968 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 969 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 970 return (code != NULL ? code->comp_level() : CompLevel_none); 971 WB_END 972 973 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 974 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 975 CHECK_JNI_EXCEPTION(env); 976 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 977 if (is_osr) { 978 mh->set_not_osr_compilable("WhiteBox", comp_level); 979 } else { 980 mh->set_not_compilable("WhiteBox", comp_level); 981 } 982 WB_END 983 984 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 985 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 986 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 987 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 988 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 989 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 990 WB_END 991 992 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 993 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 994 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 995 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 996 bool result = mh->dont_inline(); 997 mh->set_dont_inline(value == JNI_TRUE); 998 return result; 999 WB_END 1000 1001 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 1002 if (comp_level == CompLevel_any) { 1003 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 1004 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 1005 } else { 1006 return CompileBroker::queue_size(comp_level); 1007 } 1008 WB_END 1009 1010 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1011 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1012 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1013 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1014 bool result = mh->force_inline(); 1015 mh->set_force_inline(value == JNI_TRUE); 1016 return result; 1017 WB_END 1018 1019 #ifdef LINUX 1020 bool WhiteBox::validate_cgroup(const char* proc_cgroups, 1021 const char* proc_self_cgroup, 1022 const char* proc_self_mountinfo, 1023 u1* cg_flags) { 1024 CgroupInfo cg_infos[4]; 1025 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups, 1026 proc_self_cgroup, 1027 proc_self_mountinfo, cg_flags); 1028 } 1029 #endif 1030 1031 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) { 1032 // Screen for unavailable/bad comp level or null method 1033 AbstractCompiler* comp = CompileBroker::compiler(comp_level); 1034 if (method == NULL) { 1035 tty->print_cr("WB error: request to compile NULL method"); 1036 return false; 1037 } 1038 if (comp_level > highestCompLevel()) { 1039 tty->print_cr("WB error: invalid compilation level %d", comp_level); 1040 return false; 1041 } 1042 if (comp == NULL) { 1043 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level); 1044 return false; 1045 } 1046 1047 // Check if compilation is blocking 1048 methodHandle mh(THREAD, method); 1049 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 1050 bool is_blocking = !directive->BackgroundCompilationOption; 1051 DirectivesStack::release(directive); 1052 1053 // Compile method and check result 1054 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD); 1055 MutexLocker mu(THREAD, Compile_lock); 1056 bool is_queued = mh->queued_for_compilation(); 1057 if ((!is_blocking && is_queued) || nm != NULL) { 1058 return true; 1059 } 1060 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level); 1061 mh->print_short_name(tty); 1062 tty->cr(); 1063 if (is_blocking && is_queued) { 1064 tty->print_cr("WB error: blocking compilation is still in queue!"); 1065 } 1066 return false; 1067 } 1068 1069 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 1070 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1071 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1072 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 1073 WB_END 1074 1075 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 1076 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1077 Method* clinit = ik->class_initializer(); 1078 if (clinit == NULL) { 1079 return false; 1080 } 1081 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD); 1082 WB_END 1083 1084 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 1085 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1086 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1087 1088 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1089 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 1090 bool result = directive->PrintAssemblyOption; 1091 DirectivesStack::release(directive); 1092 1093 return result; 1094 WB_END 1095 1096 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1097 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1098 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1099 1100 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1101 1102 ResourceMark rm(THREAD); 1103 const char* error_msg = NULL; 1104 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1105 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 1106 1107 if (m == NULL) { 1108 assert(error_msg != NULL, "Always have an error message"); 1109 tty->print_cr("Got error: %s", error_msg); 1110 return -1; // Pattern failed 1111 } 1112 1113 // Pattern works - now check if it matches 1114 int result; 1115 if (m->match(mh, InlineMatcher::force_inline)) { 1116 result = 2; // Force inline match 1117 } else if (m->match(mh, InlineMatcher::dont_inline)) { 1118 result = 1; // Dont inline match 1119 } else { 1120 result = 0; // No match 1121 } 1122 delete m; 1123 return result; 1124 WB_END 1125 1126 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1127 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1128 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1129 1130 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1131 1132 ResourceMark rm; 1133 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1134 1135 const char* error_msg = NULL; 1136 1137 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg); 1138 if (m == NULL) { 1139 assert(error_msg != NULL, "Must have error_msg"); 1140 tty->print_cr("Got error: %s", error_msg); 1141 return -1; 1142 } 1143 1144 // Pattern works - now check if it matches 1145 int result = m->matches(mh); 1146 delete m; 1147 assert(result == 0 || result == 1, "Result out of range"); 1148 return result; 1149 WB_END 1150 1151 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method)) 1152 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1153 CHECK_JNI_EXCEPTION(env); 1154 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1155 1156 MethodData* mdo = mh->method_data(); 1157 if (mdo == NULL) { 1158 Method::build_interpreter_method_data(mh, CHECK_AND_CLEAR); 1159 mdo = mh->method_data(); 1160 } 1161 mdo->init(); 1162 InvocationCounter* icnt = mdo->invocation_counter(); 1163 InvocationCounter* bcnt = mdo->backedge_counter(); 1164 // set i-counter according to TieredThresholdPolicy::is_method_profiled 1165 icnt->set(Tier4MinInvocationThreshold); 1166 bcnt->set(Tier4CompileThreshold); 1167 WB_END 1168 1169 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 1170 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1171 CHECK_JNI_EXCEPTION(env); 1172 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1173 MutexLocker mu(THREAD, Compile_lock); 1174 MethodData* mdo = mh->method_data(); 1175 MethodCounters* mcs = mh->method_counters(); 1176 1177 if (mdo != NULL) { 1178 mdo->init(); 1179 ResourceMark rm(THREAD); 1180 int arg_count = mdo->method()->size_of_parameters(); 1181 for (int i = 0; i < arg_count; i++) { 1182 mdo->set_arg_modified(i, 0); 1183 } 1184 MutexLocker mu(THREAD, mdo->extra_data_lock()); 1185 mdo->clean_method_data(/*always_clean*/true); 1186 } 1187 1188 mh->clear_not_c1_compilable(); 1189 mh->clear_not_c2_compilable(); 1190 mh->clear_not_c2_osr_compilable(); 1191 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 1192 if (mcs != NULL) { 1193 mcs->backedge_counter()->init(); 1194 mcs->invocation_counter()->init(); 1195 mcs->set_interpreter_invocation_count(0); 1196 mcs->set_interpreter_throwout_count(0); 1197 1198 #ifdef TIERED 1199 mcs->set_rate(0.0F); 1200 mh->set_prev_event_count(0); 1201 mh->set_prev_time(0); 1202 #endif 1203 } 1204 WB_END 1205 1206 template <typename T> 1207 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const JVMFlag*, T*)) { 1208 if (name == NULL) { 1209 return false; 1210 } 1211 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1212 const char* flag_name = env->GetStringUTFChars(name, NULL); 1213 CHECK_JNI_EXCEPTION_(env, false); 1214 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name); 1215 JVMFlag::Error result = (*TAt)(flag, value); 1216 env->ReleaseStringUTFChars(name, flag_name); 1217 return (result == JVMFlag::SUCCESS); 1218 } 1219 1220 template <typename T> 1221 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(JVMFlag* flag, T*, JVMFlag::Flags)) { 1222 if (name == NULL) { 1223 return false; 1224 } 1225 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1226 const char* flag_name = env->GetStringUTFChars(name, NULL); 1227 CHECK_JNI_EXCEPTION_(env, false); 1228 JVMFlag* flag = JVMFlag::find_flag(flag_name); 1229 JVMFlag::Error result = (*TAtPut)(flag, value, JVMFlag::INTERNAL); 1230 env->ReleaseStringUTFChars(name, flag_name); 1231 return (result == JVMFlag::SUCCESS); 1232 } 1233 1234 template <typename T> 1235 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1236 ResourceMark rm(thread); 1237 jclass clazz = env->FindClass(name->as_C_string()); 1238 CHECK_JNI_EXCEPTION_(env, NULL); 1239 jmethodID methodID = env->GetStaticMethodID(clazz, 1240 vmSymbols::valueOf_name()->as_C_string(), 1241 sig->as_C_string()); 1242 CHECK_JNI_EXCEPTION_(env, NULL); 1243 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1244 CHECK_JNI_EXCEPTION_(env, NULL); 1245 return result; 1246 } 1247 1248 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1249 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1250 } 1251 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1252 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1253 } 1254 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1255 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1256 } 1257 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1258 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1259 }*/ 1260 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1261 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1262 } 1263 1264 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1265 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1266 const char* flag_name = env->GetStringUTFChars(name, NULL); 1267 CHECK_JNI_EXCEPTION_(env, NULL); 1268 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name); 1269 env->ReleaseStringUTFChars(name, flag_name); 1270 return result; 1271 } 1272 1273 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1274 const JVMFlag* flag = getVMFlag(thread, env, name); 1275 return (flag != NULL) && flag->is_constant_in_binary(); 1276 WB_END 1277 1278 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1279 const JVMFlag* flag = getVMFlag(thread, env, name); 1280 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 1281 WB_END 1282 1283 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1284 bool result; 1285 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) { 1286 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1287 return booleanBox(thread, env, result); 1288 } 1289 return NULL; 1290 WB_END 1291 1292 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1293 int result; 1294 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) { 1295 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1296 return longBox(thread, env, result); 1297 } 1298 return NULL; 1299 WB_END 1300 1301 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1302 uint result; 1303 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) { 1304 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1305 return longBox(thread, env, result); 1306 } 1307 return NULL; 1308 WB_END 1309 1310 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1311 intx result; 1312 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) { 1313 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1314 return longBox(thread, env, result); 1315 } 1316 return NULL; 1317 WB_END 1318 1319 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1320 uintx result; 1321 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) { 1322 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1323 return longBox(thread, env, result); 1324 } 1325 return NULL; 1326 WB_END 1327 1328 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1329 uint64_t result; 1330 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) { 1331 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1332 return longBox(thread, env, result); 1333 } 1334 return NULL; 1335 WB_END 1336 1337 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1338 size_t result; 1339 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) { 1340 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1341 return longBox(thread, env, result); 1342 } 1343 return NULL; 1344 WB_END 1345 1346 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1347 double result; 1348 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) { 1349 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1350 return doubleBox(thread, env, result); 1351 } 1352 return NULL; 1353 WB_END 1354 1355 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1356 ccstr ccstrResult; 1357 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) { 1358 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1359 jstring result = env->NewStringUTF(ccstrResult); 1360 CHECK_JNI_EXCEPTION_(env, NULL); 1361 return result; 1362 } 1363 return NULL; 1364 WB_END 1365 1366 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1367 bool result = value == JNI_TRUE ? true : false; 1368 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut); 1369 WB_END 1370 1371 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1372 int result = value; 1373 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut); 1374 WB_END 1375 1376 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1377 uint result = value; 1378 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut); 1379 WB_END 1380 1381 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1382 intx result = value; 1383 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut); 1384 WB_END 1385 1386 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1387 uintx result = value; 1388 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut); 1389 WB_END 1390 1391 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1392 uint64_t result = value; 1393 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut); 1394 WB_END 1395 1396 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1397 size_t result = value; 1398 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut); 1399 WB_END 1400 1401 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1402 double result = value; 1403 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut); 1404 WB_END 1405 1406 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1407 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1408 const char* ccstrValue; 1409 if (value == NULL) { 1410 ccstrValue = NULL; 1411 } 1412 else { 1413 ccstrValue = env->GetStringUTFChars(value, NULL); 1414 CHECK_JNI_EXCEPTION(env); 1415 } 1416 ccstr ccstrResult = ccstrValue; 1417 bool needFree; 1418 { 1419 ThreadInVMfromNative ttvfn(thread); // back to VM 1420 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut); 1421 } 1422 if (value != NULL) { 1423 env->ReleaseStringUTFChars(value, ccstrValue); 1424 } 1425 if (needFree) { 1426 FREE_C_HEAP_ARRAY(char, ccstrResult); 1427 } 1428 WB_END 1429 1430 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1431 WhiteBox::compilation_locked = true; 1432 WB_END 1433 1434 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1435 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1436 WhiteBox::compilation_locked = false; 1437 mo.notify_all(); 1438 WB_END 1439 1440 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 1441 // Force a code cache sweep and block until it finished 1442 NMethodSweeper::force_sweep(); 1443 WB_END 1444 1445 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1446 ResourceMark rm(THREAD); 1447 int len; 1448 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1449 return (StringTable::lookup(name, len) != NULL); 1450 WB_END 1451 1452 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1453 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1454 Universe::heap()->collect(GCCause::_wb_full_gc); 1455 #if INCLUDE_G1GC 1456 if (UseG1GC) { 1457 // Needs to be cleared explicitly for G1 1458 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1459 } 1460 #endif // INCLUDE_G1GC 1461 WB_END 1462 1463 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1464 Universe::heap()->collect(GCCause::_wb_young_gc); 1465 WB_END 1466 1467 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1468 // static+volatile in order to force the read to happen 1469 // (not be eliminated by the compiler) 1470 static char c; 1471 static volatile char* p; 1472 1473 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 1474 if (p == NULL) { 1475 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1476 } 1477 1478 c = *p; 1479 WB_END 1480 1481 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1482 const char* features = VM_Version::features_string(); 1483 ThreadToNativeFromVM ttn(thread); 1484 jstring features_string = env->NewStringUTF(features); 1485 1486 CHECK_JNI_EXCEPTION_(env, NULL); 1487 1488 return features_string; 1489 WB_END 1490 1491 int WhiteBox::get_blob_type(const CodeBlob* code) { 1492 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1493 if (code->is_aot()) { 1494 return -1; 1495 } 1496 return CodeCache::get_code_heap(code)->code_blob_type(); 1497 } 1498 1499 CodeHeap* WhiteBox::get_code_heap(int blob_type) { 1500 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1501 return CodeCache::get_code_heap(blob_type); 1502 } 1503 1504 struct CodeBlobStub { 1505 CodeBlobStub(const CodeBlob* blob) : 1506 name(os::strdup(blob->name())), 1507 size(blob->size()), 1508 blob_type(WhiteBox::get_blob_type(blob)), 1509 address((jlong) blob) { } 1510 ~CodeBlobStub() { os::free((void*) name); } 1511 const char* const name; 1512 const jint size; 1513 const jint blob_type; 1514 const jlong address; 1515 }; 1516 1517 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1518 ResourceMark rm; 1519 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1520 CHECK_JNI_EXCEPTION_(env, NULL); 1521 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1522 1523 jstring name = env->NewStringUTF(cb->name); 1524 CHECK_JNI_EXCEPTION_(env, NULL); 1525 env->SetObjectArrayElement(result, 0, name); 1526 1527 jobject obj = integerBox(thread, env, cb->size); 1528 CHECK_JNI_EXCEPTION_(env, NULL); 1529 env->SetObjectArrayElement(result, 1, obj); 1530 1531 obj = integerBox(thread, env, cb->blob_type); 1532 CHECK_JNI_EXCEPTION_(env, NULL); 1533 env->SetObjectArrayElement(result, 2, obj); 1534 1535 obj = longBox(thread, env, cb->address); 1536 CHECK_JNI_EXCEPTION_(env, NULL); 1537 env->SetObjectArrayElement(result, 3, obj); 1538 1539 return result; 1540 } 1541 1542 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1543 ResourceMark rm(THREAD); 1544 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1545 CHECK_JNI_EXCEPTION_(env, NULL); 1546 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1547 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1548 jobjectArray result = NULL; 1549 if (code == NULL) { 1550 return result; 1551 } 1552 int comp_level = code->comp_level(); 1553 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size(); 1554 1555 ThreadToNativeFromVM ttn(thread); 1556 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1557 CHECK_JNI_EXCEPTION_(env, NULL); 1558 result = env->NewObjectArray(5, clazz, NULL); 1559 if (result == NULL) { 1560 return result; 1561 } 1562 1563 CodeBlobStub stub(code); 1564 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1565 CHECK_JNI_EXCEPTION_(env, NULL); 1566 env->SetObjectArrayElement(result, 0, codeBlob); 1567 1568 jobject level = integerBox(thread, env, comp_level); 1569 CHECK_JNI_EXCEPTION_(env, NULL); 1570 env->SetObjectArrayElement(result, 1, level); 1571 1572 jbyteArray insts = env->NewByteArray(insts_size); 1573 CHECK_JNI_EXCEPTION_(env, NULL); 1574 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1575 env->SetObjectArrayElement(result, 2, insts); 1576 1577 jobject id = integerBox(thread, env, code->compile_id()); 1578 CHECK_JNI_EXCEPTION_(env, NULL); 1579 env->SetObjectArrayElement(result, 3, id); 1580 1581 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1582 CHECK_JNI_EXCEPTION_(env, NULL); 1583 env->SetObjectArrayElement(result, 4, entry_point); 1584 1585 return result; 1586 WB_END 1587 1588 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1589 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1590 BufferBlob* blob; 1591 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1592 if (full_size < size) { 1593 full_size += align_up(size - full_size, oopSize); 1594 } 1595 { 1596 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1597 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1598 if (blob != NULL) { 1599 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1600 } 1601 } 1602 // Track memory usage statistic after releasing CodeCache_lock 1603 MemoryService::track_code_cache_memory_usage(); 1604 return blob; 1605 } 1606 1607 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1608 if (size < 0) { 1609 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1610 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1611 } 1612 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1613 WB_END 1614 1615 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1616 if (addr == 0) { 1617 return; 1618 } 1619 BufferBlob::free((BufferBlob*) addr); 1620 WB_END 1621 1622 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1623 ResourceMark rm; 1624 GrowableArray<CodeBlobStub*> blobs; 1625 { 1626 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1627 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1628 if (heap == NULL) { 1629 return NULL; 1630 } 1631 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1632 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1633 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1634 new (stub) CodeBlobStub(cb); 1635 blobs.append(stub); 1636 } 1637 } 1638 ThreadToNativeFromVM ttn(thread); 1639 jobjectArray result = NULL; 1640 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1641 CHECK_JNI_EXCEPTION_(env, NULL); 1642 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1643 CHECK_JNI_EXCEPTION_(env, NULL); 1644 if (result == NULL) { 1645 return result; 1646 } 1647 int i = 0; 1648 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1649 it != blobs.end(); ++it) { 1650 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1651 CHECK_JNI_EXCEPTION_(env, NULL); 1652 env->SetObjectArrayElement(result, i, obj); 1653 CHECK_JNI_EXCEPTION_(env, NULL); 1654 ++i; 1655 } 1656 return result; 1657 WB_END 1658 1659 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1660 return CompileBroker::get_compilation_activity_mode(); 1661 WB_END 1662 1663 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1664 if (addr == 0) { 1665 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1666 "WB_GetCodeBlob: addr is null"); 1667 } 1668 ThreadToNativeFromVM ttn(thread); 1669 CodeBlobStub stub((CodeBlob*) addr); 1670 return codeBlob2objectArray(thread, env, &stub); 1671 WB_END 1672 1673 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1674 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1675 CHECK_JNI_EXCEPTION_(env, 0); 1676 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1677 return (jlong) mh->method_data(); 1678 WB_END 1679 1680 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1681 return (jlong) Thread::current()->stack_size(); 1682 WB_END 1683 1684 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1685 JavaThread* t = JavaThread::current(); 1686 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size(); 1687 WB_END 1688 1689 1690 int WhiteBox::array_bytes_to_length(size_t bytes) { 1691 return Array<u1>::bytes_to_length(bytes); 1692 } 1693 1694 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1695 if (size < 0) { 1696 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1697 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1698 } 1699 1700 oop class_loader_oop = JNIHandles::resolve(class_loader); 1701 ClassLoaderData* cld = class_loader_oop != NULL 1702 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1703 : ClassLoaderData::the_null_class_loader_data(); 1704 1705 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1706 1707 return (jlong)(uintptr_t)metadata; 1708 WB_END 1709 1710 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 1711 oop class_loader_oop = JNIHandles::resolve(class_loader); 1712 ClassLoaderData* cld = class_loader_oop != NULL 1713 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1714 : ClassLoaderData::the_null_class_loader_data(); 1715 1716 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 1717 WB_END 1718 1719 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1720 jstring version, jstring location, jobjectArray packages)) 1721 Modules::define_module(module, is_open, version, location, packages, CHECK); 1722 WB_END 1723 1724 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1725 Modules::add_module_exports_qualified(from_module, package, to_module, CHECK); 1726 WB_END 1727 1728 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1729 Modules::add_module_exports_to_all_unnamed(module, package, CHECK); 1730 WB_END 1731 1732 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1733 Modules::add_module_exports(module, package, NULL, CHECK); 1734 WB_END 1735 1736 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1737 Modules::add_reads_module(from_module, source_module, CHECK); 1738 WB_END 1739 1740 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1741 if (inc < 0) { 1742 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1743 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1744 } 1745 1746 jlong max_size_t = (jlong) ((size_t) -1); 1747 if (inc > max_size_t) { 1748 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1749 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1750 } 1751 1752 size_t new_cap_until_GC = 0; 1753 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1754 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1755 if (!success) { 1756 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1757 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1758 "due to contention with another thread"); 1759 } 1760 return (jlong) new_cap_until_GC; 1761 WB_END 1762 1763 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1764 return (jlong) MetaspaceGC::capacity_until_GC(); 1765 WB_END 1766 1767 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb)) 1768 return (jlong)Metaspace::reserve_alignment(); 1769 WB_END 1770 1771 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue)) 1772 Mutex::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ? 1773 Mutex::_safepoint_check_always : 1774 Mutex::_safepoint_check_never; 1775 Mutex::SafepointCheckFlag sfpt_check_attempted = attemptedNoSafepointValue ? 1776 Mutex::_no_safepoint_check_flag : 1777 Mutex::_safepoint_check_flag; 1778 MutexLocker ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required), 1779 sfpt_check_attempted); 1780 WB_END 1781 1782 WB_ENTRY(void, WB_AssertSpecialLock(JNIEnv* env, jobject o, jboolean allowVMBlock, jboolean safepointCheck)) 1783 // Create a special lock violating condition in value 1784 Mutex::SafepointCheckRequired sfpt_check_required = safepointCheck ? 1785 Mutex::_safepoint_check_always : 1786 Mutex::_safepoint_check_never; 1787 Mutex::SafepointCheckFlag safepoint_check = safepointCheck ? 1788 Monitor::_safepoint_check_flag : 1789 Monitor::_no_safepoint_check_flag; 1790 1791 MutexLocker ml(new Mutex(Mutex::special, "SpecialTest_lock", allowVMBlock, sfpt_check_required), safepoint_check); 1792 // If the lock above succeeds, try to safepoint to test the NSV implied with this special lock. 1793 ThreadBlockInVM tbivm(JavaThread::current()); 1794 WB_END 1795 1796 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1797 oop obj_oop = JNIHandles::resolve(obj); 1798 return (jboolean) obj_oop->mark().has_monitor(); 1799 WB_END 1800 1801 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb)) 1802 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors"); 1803 return ObjectSynchronizer::request_deflate_idle_monitors(); 1804 WB_END 1805 1806 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1807 VM_ForceSafepoint force_safepoint_op; 1808 VMThread::execute(&force_safepoint_op); 1809 WB_END 1810 1811 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1812 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1813 return (jlong) ik->constants(); 1814 WB_END 1815 1816 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1817 return ConstantPool::CPCACHE_INDEX_TAG; 1818 WB_END 1819 1820 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1821 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1822 ConstantPool* cp = ik->constants(); 1823 if (cp->cache() == NULL) { 1824 return -1; 1825 } 1826 return cp->cache()->length(); 1827 WB_END 1828 1829 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1830 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1831 ConstantPool* cp = ik->constants(); 1832 if (cp->cache() == NULL) { 1833 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1834 } 1835 jint cpci = index; 1836 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1837 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1838 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1839 } 1840 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1841 return cpi; 1842 WB_END 1843 1844 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1845 return ConstantPool::encode_invokedynamic_index(index); 1846 WB_END 1847 1848 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1849 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1850 VMThread::execute(&clear_ics); 1851 WB_END 1852 1853 template <typename T> 1854 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1855 assert(value != NULL, "sanity"); 1856 if (method == NULL || name == NULL) { 1857 return false; 1858 } 1859 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1860 CHECK_JNI_EXCEPTION_(env, false); 1861 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1862 // can't be in VM when we call JNI 1863 ThreadToNativeFromVM ttnfv(thread); 1864 const char* flag_name = env->GetStringUTFChars(name, NULL); 1865 CHECK_JNI_EXCEPTION_(env, false); 1866 bool result = CompilerOracle::has_option_value(mh, flag_name, *value); 1867 env->ReleaseStringUTFChars(name, flag_name); 1868 return result; 1869 } 1870 1871 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1872 bool result; 1873 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1874 // can't be in VM when we call JNI 1875 ThreadToNativeFromVM ttnfv(thread); 1876 return booleanBox(thread, env, result); 1877 } 1878 return NULL; 1879 WB_END 1880 1881 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1882 intx result; 1883 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1884 // can't be in VM when we call JNI 1885 ThreadToNativeFromVM ttnfv(thread); 1886 return longBox(thread, env, result); 1887 } 1888 return NULL; 1889 WB_END 1890 1891 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1892 uintx result; 1893 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1894 // can't be in VM when we call JNI 1895 ThreadToNativeFromVM ttnfv(thread); 1896 return longBox(thread, env, result); 1897 } 1898 return NULL; 1899 WB_END 1900 1901 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1902 double result; 1903 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1904 // can't be in VM when we call JNI 1905 ThreadToNativeFromVM ttnfv(thread); 1906 return doubleBox(thread, env, result); 1907 } 1908 return NULL; 1909 WB_END 1910 1911 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1912 ccstr ccstrResult; 1913 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 1914 // can't be in VM when we call JNI 1915 ThreadToNativeFromVM ttnfv(thread); 1916 jstring result = env->NewStringUTF(ccstrResult); 1917 CHECK_JNI_EXCEPTION_(env, NULL); 1918 return result; 1919 } 1920 return NULL; 1921 WB_END 1922 1923 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb)) 1924 const char* p = Arguments::get_default_shared_archive_path(); 1925 ThreadToNativeFromVM ttn(thread); 1926 jstring path_string = env->NewStringUTF(p); 1927 1928 CHECK_JNI_EXCEPTION_(env, NULL); 1929 1930 return path_string; 1931 WB_END 1932 1933 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb)) 1934 return UseSharedSpaces; 1935 WB_END 1936 1937 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb)) 1938 return FileMapInfo::memory_mapping_failed(); 1939 WB_END 1940 1941 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 1942 oop obj_oop = JNIHandles::resolve(obj); 1943 return HeapShared::is_archived_object(obj_oop); 1944 WB_END 1945 1946 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 1947 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1948 WB_END 1949 1950 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env)) 1951 return !HeapShared::closed_archive_heap_region_mapped(); 1952 WB_END 1953 1954 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz)) 1955 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 1956 if (k->is_instance_klass()) { 1957 InstanceKlass *ik = InstanceKlass::cast(k); 1958 ConstantPool *cp = ik->constants(); 1959 objArrayOop refs = cp->resolved_references(); 1960 return (jobject)JNIHandles::make_local(env, refs); 1961 } else { 1962 return NULL; 1963 } 1964 WB_END 1965 1966 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz)) 1967 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 1968 if (!k->is_instance_klass()) { 1969 return; 1970 } 1971 InstanceKlass *ik = InstanceKlass::cast(k); 1972 ik->link_class(THREAD); // may throw verification error 1973 WB_END 1974 1975 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 1976 return HeapShared::open_archive_heap_region_mapped(); 1977 WB_END 1978 1979 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env)) 1980 #if INCLUDE_CDS 1981 return true; 1982 #else 1983 return false; 1984 #endif // INCLUDE_CDS 1985 WB_END 1986 1987 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncludedInVmBuild(JNIEnv* env)) 1988 #if COMPILER2_OR_JVMCI 1989 return true; 1990 #else 1991 return false; 1992 #endif 1993 WB_END 1994 1995 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env)) 1996 return HeapShared::is_heap_object_archiving_allowed(); 1997 WB_END 1998 1999 2000 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env)) 2001 #if INCLUDE_JFR 2002 return true; 2003 #else 2004 return false; 2005 #endif // INCLUDE_JFR 2006 WB_END 2007 2008 #if INCLUDE_CDS 2009 2010 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name)) 2011 ResourceMark rm; 2012 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 2013 int result = CDSOffsets::find_offset(c_name); 2014 return (jint)result; 2015 WB_END 2016 2017 #endif // INCLUDE_CDS 2018 2019 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 2020 class TraceSelfClosure : public HandshakeClosure { 2021 jint _num_threads_completed; 2022 2023 void do_thread(Thread* th) { 2024 assert(th->is_Java_thread(), "sanity"); 2025 JavaThread* jt = (JavaThread*)th; 2026 ResourceMark rm; 2027 2028 jt->print_on(tty); 2029 jt->print_stack_on(tty); 2030 tty->cr(); 2031 Atomic::inc(&_num_threads_completed); 2032 } 2033 2034 public: 2035 TraceSelfClosure() : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {} 2036 2037 jint num_threads_completed() const { return _num_threads_completed; } 2038 }; 2039 TraceSelfClosure tsc; 2040 2041 if (all_threads) { 2042 Handshake::execute(&tsc); 2043 } else { 2044 oop thread_oop = JNIHandles::resolve(thread_handle); 2045 if (thread_oop != NULL) { 2046 JavaThread* target = java_lang_Thread::thread(thread_oop); 2047 Handshake::execute(&tsc, target); 2048 } 2049 } 2050 return tsc.num_threads_completed(); 2051 WB_END 2052 2053 //Some convenience methods to deal with objects from java 2054 int WhiteBox::offset_for_field(const char* field_name, oop object, 2055 Symbol* signature_symbol) { 2056 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 2057 Thread* THREAD = Thread::current(); 2058 2059 //Get the class of our object 2060 Klass* arg_klass = object->klass(); 2061 //Turn it into an instance-klass 2062 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 2063 2064 //Create symbols to look for in the class 2065 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name); 2066 2067 //To be filled in with an offset of the field we're looking for 2068 fieldDescriptor fd; 2069 2070 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 2071 if (res == NULL) { 2072 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 2073 name_symbol->as_C_string()); 2074 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 2075 } 2076 2077 //fetch the field at the offset we've found 2078 int dest_offset = fd.offset(); 2079 2080 return dest_offset; 2081 } 2082 2083 2084 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 2085 int offset = offset_for_field(field_name, object, 2086 vmSymbols::string_signature()); 2087 oop string = object->obj_field(offset); 2088 if (string == NULL) { 2089 return NULL; 2090 } 2091 const char* ret = java_lang_String::as_utf8_string(string); 2092 return ret; 2093 } 2094 2095 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 2096 int offset = 2097 offset_for_field(field_name, object, vmSymbols::bool_signature()); 2098 bool ret = (object->bool_field(offset) == JNI_TRUE); 2099 return ret; 2100 } 2101 2102 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 2103 ResourceMark rm; 2104 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 2105 2106 // one by one registration natives for exception catching 2107 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 2108 CHECK_JNI_EXCEPTION(env); 2109 for (int i = 0, n = method_count; i < n; ++i) { 2110 // Skip dummy entries 2111 if (method_array[i].fnPtr == NULL) continue; 2112 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 2113 jthrowable throwable_obj = env->ExceptionOccurred(); 2114 if (throwable_obj != NULL) { 2115 env->ExceptionClear(); 2116 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 2117 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 2118 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 2119 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 2120 method_array[i].name, method_array[i].signature); 2121 } 2122 } else { 2123 // Registration failed unexpectedly. 2124 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 2125 method_array[i].name, method_array[i].signature); 2126 env->UnregisterNatives(wbclass); 2127 break; 2128 } 2129 } 2130 } 2131 } 2132 2133 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 2134 // can't be in VM when we call JNI 2135 ThreadToNativeFromVM ttnfv(thread); 2136 const char* dir = env->GetStringUTFChars(compDirect, NULL); 2137 CHECK_JNI_EXCEPTION_(env, 0); 2138 int ret; 2139 { 2140 ThreadInVMfromNative ttvfn(thread); // back to VM 2141 ret = DirectivesParser::parse_string(dir, tty); 2142 } 2143 env->ReleaseStringUTFChars(compDirect, dir); 2144 // -1 for error parsing directive. Return 0 as number of directives added. 2145 if (ret == -1) { 2146 ret = 0; 2147 } 2148 return (jint) ret; 2149 WB_END 2150 2151 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 2152 DirectivesStack::pop(count); 2153 WB_END 2154 2155 // Checks that the library libfile has the noexecstack bit set. 2156 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 2157 jboolean ret = false; 2158 #ifdef LINUX 2159 // Can't be in VM when we call JNI. 2160 ThreadToNativeFromVM ttnfv(thread); 2161 const char* lf = env->GetStringUTFChars(libfile, NULL); 2162 CHECK_JNI_EXCEPTION_(env, 0); 2163 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 2164 env->ReleaseStringUTFChars(libfile, lf); 2165 #endif 2166 return ret; 2167 WB_END 2168 2169 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 2170 LINUX_ONLY(return OSContainer::is_containerized();) 2171 return false; 2172 WB_END 2173 2174 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env, 2175 jobject o, 2176 jstring proc_cgroups, 2177 jstring proc_self_cgroup, 2178 jstring proc_self_mountinfo)) 2179 jint ret = 0; 2180 #ifdef LINUX 2181 ThreadToNativeFromVM ttnfv(thread); 2182 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, NULL); 2183 CHECK_JNI_EXCEPTION_(env, 0); 2184 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, NULL); 2185 CHECK_JNI_EXCEPTION_(env, 0); 2186 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, NULL); 2187 CHECK_JNI_EXCEPTION_(env, 0); 2188 u1 cg_type_flags = 0; 2189 // This sets cg_type_flags 2190 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags); 2191 ret = (jint)cg_type_flags; 2192 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups); 2193 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup); 2194 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo); 2195 #endif 2196 return ret; 2197 WB_END 2198 2199 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 2200 os::print_os_info(tty); 2201 WB_END 2202 2203 // Elf decoder 2204 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 2205 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 2206 ElfFile::_do_not_cache_elf_section = true; 2207 #endif 2208 WB_END 2209 2210 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o)) 2211 return (jlong) ResolvedMethodTable::items_count(); 2212 WB_END 2213 2214 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o)) 2215 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count(); 2216 WB_END 2217 2218 WB_ENTRY(jint, WB_AotLibrariesCount(JNIEnv* env, jobject o)) 2219 jint result = 0; 2220 #if INCLUDE_AOT 2221 result = (jint) AOTLoader::heaps_count(); 2222 #endif 2223 return result; 2224 WB_END 2225 2226 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror)) 2227 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror)); 2228 // Return size in bytes. 2229 return k->size() * wordSize; 2230 WB_END 2231 2232 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java. 2233 // It explains how the thread's priority field is used for test state coordination. 2234 // 2235 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle)) 2236 oop target_oop = JNIHandles::resolve_non_null(target_handle); 2237 jlong tid = java_lang_Thread::thread_id(target_oop); 2238 JavaThread* target = java_lang_Thread::thread(target_oop); 2239 2240 // Grab a ThreadsListHandle to protect the target thread whilst terminating 2241 ThreadsListHandle tlh; 2242 2243 // Look up the target thread by tid to ensure it is present 2244 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid); 2245 if (t == NULL) { 2246 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!"); 2247 } 2248 2249 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected"); 2250 // Allow target to terminate by boosting priority 2251 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1)); 2252 2253 // Now wait for the target to terminate 2254 while (!target->is_terminated()) { 2255 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint 2256 os::naked_short_sleep(0); 2257 } 2258 2259 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated"); 2260 2261 // Now release the GC inducing thread - we have to re-resolve the external oop that 2262 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now. 2263 oop original = JNIHandles::resolve_non_null(target_handle); 2264 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2)); 2265 2266 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:"); 2267 2268 // The Java code should be creating garbage and triggering GC, which would potentially move 2269 // the threadObj oop. If the exiting thread is properly protected then its threadObj should 2270 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to 2271 // kick in. 2272 for (int i = 0; i < 5; i++) { 2273 oop original = JNIHandles::resolve_non_null(target_handle); 2274 oop current = t->threadObj(); 2275 if (original != current) { 2276 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i); 2277 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!"); 2278 } else { 2279 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i); 2280 ThreadBlockInVM tbivm(thread); 2281 os::naked_short_sleep(50); 2282 } 2283 } 2284 WB_END 2285 2286 #define CC (char*) 2287 2288 static JNINativeMethod methods[] = { 2289 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 2290 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 2291 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 2292 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 2293 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 2294 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 2295 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 2296 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 2297 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 2298 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses }, 2299 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount }, 2300 {CC"parseCommandLine0", 2301 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 2302 (void*) &WB_ParseCommandLine 2303 }, 2304 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2305 (void*)&WB_AddToBootstrapClassLoaderSearch}, 2306 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2307 (void*)&WB_AddToSystemClassLoaderSearch}, 2308 {CC"getCompressedOopsMaxHeapSize", CC"()J", 2309 (void*)&WB_GetCompressedOopsMaxHeapSize}, 2310 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 2311 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 2312 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 2313 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 2314 #if INCLUDE_CDS 2315 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName}, 2316 #endif 2317 #if INCLUDE_G1GC 2318 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 2319 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 2320 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 2321 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 2322 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 2323 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 2324 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 2325 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 2326 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 2327 (void*)&WB_G1AuxiliaryMemoryUsage }, 2328 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount }, 2329 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds }, 2330 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 2331 #endif // INCLUDE_G1GC 2332 #if INCLUDE_G1GC || INCLUDE_PARALLELGC 2333 {CC"dramReservedStart", CC"()J", (void*)&WB_DramReservedStart }, 2334 {CC"dramReservedEnd", CC"()J", (void*)&WB_DramReservedEnd }, 2335 {CC"nvdimmReservedStart", CC"()J", (void*)&WB_NvdimmReservedStart }, 2336 {CC"nvdimmReservedEnd", CC"()J", (void*)&WB_NvdimmReservedEnd }, 2337 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC 2338 #if INCLUDE_PARALLELGC 2339 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 2340 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 2341 #endif 2342 #if INCLUDE_NMT 2343 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 2344 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 2345 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType}, 2346 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 2347 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 2348 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 2349 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 2350 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 2351 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 2352 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 2353 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 2354 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena }, 2355 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena }, 2356 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc }, 2357 #endif // INCLUDE_NMT 2358 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 2359 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 2360 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 2361 (void*)&WB_DeoptimizeMethod }, 2362 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 2363 (void*)&WB_IsMethodCompiled }, 2364 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 2365 (void*)&WB_IsMethodCompilable}, 2366 {CC"isMethodQueuedForCompilation0", 2367 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 2368 {CC"isIntrinsicAvailable0", 2369 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2370 (void*)&WB_IsIntrinsicAvailable}, 2371 {CC"makeMethodNotCompilable0", 2372 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2373 {CC"testSetDontInlineMethod0", 2374 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2375 {CC"getMethodCompilationLevel0", 2376 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2377 {CC"getMethodEntryBci0", 2378 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2379 {CC"getCompileQueueSize", 2380 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2381 {CC"testSetForceInlineMethod0", 2382 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2383 {CC"enqueueMethodForCompilation0", 2384 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2385 {CC"enqueueInitializerForCompilation0", 2386 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2387 {CC"markMethodProfiled", 2388 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled}, 2389 {CC"clearMethodState0", 2390 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2391 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2392 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2393 {CC"matchesMethod", 2394 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2395 (void*)&WB_MatchesMethod}, 2396 {CC"matchesInline", 2397 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2398 (void*)&WB_MatchesInline}, 2399 {CC"shouldPrintAssembly", 2400 CC"(Ljava/lang/reflect/Executable;I)Z", 2401 (void*)&WB_ShouldPrintAssembly}, 2402 2403 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2404 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2405 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2406 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2407 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2408 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2409 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2410 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2411 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2412 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2413 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2414 (void*)&WB_SetStringVMFlag}, 2415 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2416 (void*)&WB_GetBooleanVMFlag}, 2417 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2418 (void*)&WB_GetIntVMFlag}, 2419 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2420 (void*)&WB_GetUintVMFlag}, 2421 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2422 (void*)&WB_GetIntxVMFlag}, 2423 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2424 (void*)&WB_GetUintxVMFlag}, 2425 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2426 (void*)&WB_GetUint64VMFlag}, 2427 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2428 (void*)&WB_GetSizeTVMFlag}, 2429 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2430 (void*)&WB_GetDoubleVMFlag}, 2431 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2432 (void*)&WB_GetStringVMFlag}, 2433 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2434 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2435 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2436 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2437 {CC"allocateMetaspace", 2438 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2439 {CC"freeMetaspace", 2440 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 2441 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2442 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2443 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment }, 2444 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2445 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2446 (void*)&WB_GetNMethod }, 2447 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 2448 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2449 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2450 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2451 {CC"getCompilationActivityMode", 2452 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2453 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2454 (void*)&WB_GetMethodData }, 2455 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2456 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2457 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2458 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2459 (void*)&WB_DefineModule }, 2460 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2461 (void*)&WB_AddModuleExports }, 2462 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2463 (void*)&WB_AddReadsModule }, 2464 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2465 (void*)&WB_AddModuleExportsToAllUnnamed }, 2466 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2467 (void*)&WB_AddModuleExportsToAll }, 2468 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls }, 2469 {CC"assertSpecialLock", CC"(ZZ)V", (void*)&WB_AssertSpecialLock }, 2470 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors }, 2471 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2472 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2473 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2474 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 2475 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 2476 {CC"remapInstructionOperandFromCPCache0", 2477 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 2478 {CC"encodeConstantPoolIndyIndex0", 2479 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 2480 {CC"getMethodBooleanOption", 2481 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2482 (void*)&WB_GetMethodBooleaneOption}, 2483 {CC"getMethodIntxOption", 2484 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2485 (void*)&WB_GetMethodIntxOption}, 2486 {CC"getMethodUintxOption", 2487 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2488 (void*)&WB_GetMethodUintxOption}, 2489 {CC"getMethodDoubleOption", 2490 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2491 (void*)&WB_GetMethodDoubleOption}, 2492 {CC"getMethodStringOption", 2493 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2494 (void*)&WB_GetMethodStringOption}, 2495 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;", 2496 (void*)&WB_GetDefaultArchivePath}, 2497 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled}, 2498 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 2499 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2500 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored }, 2501 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 2502 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass}, 2503 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2504 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild }, 2505 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild }, 2506 {CC"isC2OrJVMCIIncludedInVmBuild", CC"()Z", (void*)&WB_isC2OrJVMCIIncludedInVmBuild }, 2507 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported }, 2508 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed }, 2509 2510 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2511 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2512 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread }, 2513 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2514 (void*)&WB_AddCompilerDirective }, 2515 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2516 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported}, 2517 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected}, 2518 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically}, 2519 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints}, 2520 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl}, 2521 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl}, 2522 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle}, 2523 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z", 2524 (void*)&WB_ConcurrentGCRunTo}, 2525 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2526 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2527 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2528 {CC"validateCgroup", 2529 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I", 2530 (void*)&WB_ValidateCgroup }, 2531 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2532 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 2533 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount }, 2534 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount }, 2535 {CC"aotLibrariesCount", CC"()I", (void*)&WB_AotLibrariesCount }, 2536 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize}, 2537 }; 2538 2539 2540 #undef CC 2541 2542 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2543 { 2544 if (WhiteBoxAPI) { 2545 // Make sure that wbclass is loaded by the null classloader 2546 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass))); 2547 Handle loader(THREAD, ik->class_loader()); 2548 if (loader.is_null()) { 2549 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2550 WhiteBox::set_used(); 2551 } 2552 } 2553 } 2554 JVM_END