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 "memory/filemap.hpp" 45 #include "memory/heapShared.inline.hpp" 46 #include "memory/metaspaceShared.hpp" 47 #include "memory/metadataFactory.hpp" 48 #include "memory/iterator.hpp" 49 #include "memory/resourceArea.hpp" 50 #include "memory/universe.hpp" 51 #include "memory/oopFactory.hpp" 52 #include "oops/array.hpp" 53 #include "oops/compressedOops.hpp" 54 #include "oops/constantPool.inline.hpp" 55 #include "oops/method.inline.hpp" 56 #include "oops/objArrayKlass.hpp" 57 #include "oops/objArrayOop.inline.hpp" 58 #include "oops/oop.inline.hpp" 59 #include "oops/typeArrayOop.inline.hpp" 60 #include "prims/resolvedMethodTable.hpp" 61 #include "prims/wbtestmethods/parserTests.hpp" 62 #include "prims/whitebox.inline.hpp" 63 #include "runtime/arguments.hpp" 64 #include "runtime/atomic.hpp" 65 #include "runtime/deoptimization.hpp" 66 #include "runtime/fieldDescriptor.inline.hpp" 67 #include "runtime/flags/jvmFlag.hpp" 68 #include "runtime/frame.inline.hpp" 69 #include "runtime/handles.inline.hpp" 70 #include "runtime/handshake.hpp" 71 #include "runtime/interfaceSupport.inline.hpp" 72 #include "runtime/javaCalls.hpp" 73 #include "runtime/jniHandles.inline.hpp" 74 #include "runtime/os.hpp" 75 #include "runtime/sweeper.hpp" 76 #include "runtime/synchronizer.hpp" 77 #include "runtime/thread.hpp" 78 #include "runtime/threadSMR.hpp" 79 #include "runtime/vm_version.hpp" 80 #include "services/memoryService.hpp" 81 #include "utilities/align.hpp" 82 #include "utilities/debug.hpp" 83 #include "utilities/elfFile.hpp" 84 #include "utilities/exceptions.hpp" 85 #include "utilities/macros.hpp" 86 #if INCLUDE_CDS 87 #include "prims/cdsoffsets.hpp" 88 #endif // INCLUDE_CDS 89 #if INCLUDE_G1GC 90 #include "gc/g1/g1Arguments.hpp" 91 #include "gc/g1/g1CollectedHeap.inline.hpp" 92 #include "gc/g1/g1ConcurrentMark.hpp" 93 #include "gc/g1/g1ConcurrentMarkThread.hpp" 94 #include "gc/g1/heapRegionRemSet.hpp" 95 #include "gc/g1/heterogeneousHeapRegionManager.hpp" 96 #endif // INCLUDE_G1GC 97 #if INCLUDE_PARALLELGC 98 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 99 #endif // INCLUDE_PARALLELGC 100 #if INCLUDE_NMT 101 #include "services/mallocSiteTable.hpp" 102 #include "services/memTracker.hpp" 103 #include "utilities/nativeCallStack.hpp" 104 #endif // INCLUDE_NMT 105 #if INCLUDE_AOT 106 #include "aot/aotLoader.hpp" 107 #endif // INCLUDE_AOT 108 109 #ifdef LINUX 110 #include "osContainer_linux.hpp" 111 #include "cgroupSubsystem_linux.hpp" 112 #endif 113 114 #define SIZE_T_MAX_VALUE ((size_t) -1) 115 116 #define CHECK_JNI_EXCEPTION_(env, value) \ 117 do { \ 118 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 119 THREAD->clear_pending_jni_exception_check(); \ 120 if (HAS_PENDING_EXCEPTION) { \ 121 return(value); \ 122 } \ 123 } while (0) 124 125 #define CHECK_JNI_EXCEPTION(env) \ 126 do { \ 127 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 128 THREAD->clear_pending_jni_exception_check(); \ 129 if (HAS_PENDING_EXCEPTION) { \ 130 return; \ 131 } \ 132 } while (0) 133 134 bool WhiteBox::_used = false; 135 volatile bool WhiteBox::compilation_locked = false; 136 137 class VM_WhiteBoxOperation : public VM_Operation { 138 public: 139 VM_WhiteBoxOperation() { } 140 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 141 bool allow_nested_vm_operations() const { return true; } 142 }; 143 144 145 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 146 return (jlong)(void*)JNIHandles::resolve(obj); 147 WB_END 148 149 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 150 return heapOopSize; 151 WB_END 152 153 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 154 return os::vm_page_size(); 155 WB_END 156 157 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 158 return os::vm_allocation_granularity(); 159 WB_END 160 161 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 162 return os::large_page_size(); 163 WB_END 164 165 class WBIsKlassAliveClosure : public LockedClassesDo { 166 Symbol* _name; 167 int _count; 168 public: 169 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {} 170 171 void do_klass(Klass* k) { 172 Symbol* ksym = k->name(); 173 if (ksym->fast_compare(_name) == 0) { 174 _count++; 175 } 176 } 177 178 int count() const { 179 return _count; 180 } 181 }; 182 183 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name)) 184 oop h_name = JNIHandles::resolve(name); 185 if (h_name == NULL) return false; 186 Symbol* sym = java_lang_String::as_symbol(h_name); 187 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 188 189 WBIsKlassAliveClosure closure(sym); 190 ClassLoaderDataGraph::classes_do(&closure); 191 192 // Return the count of alive classes with this name. 193 return closure.count(); 194 WB_END 195 196 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name)) 197 oop h_name = JNIHandles::resolve(name); 198 if (h_name == NULL) return false; 199 Symbol* sym = java_lang_String::as_symbol(h_name); 200 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 201 return (jint)sym->refcount(); 202 WB_END 203 204 205 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 206 #if INCLUDE_JVMTI 207 ResourceMark rm; 208 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 209 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 210 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 211 assert(err == JVMTI_ERROR_NONE, "must not fail"); 212 #endif 213 } 214 WB_END 215 216 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 217 #if INCLUDE_JVMTI 218 ResourceMark rm; 219 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 220 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 221 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 222 assert(err == JVMTI_ERROR_NONE, "must not fail"); 223 #endif 224 } 225 WB_END 226 227 228 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 229 return (jlong)Arguments::max_heap_for_compressed_oops(); 230 } 231 WB_END 232 233 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 234 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " " 235 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 236 MinHeapSize, 237 InitialHeapSize, 238 MaxHeapSize, 239 SpaceAlignment, 240 HeapAlignment); 241 } 242 WB_END 243 244 #ifndef PRODUCT 245 // Forward declaration 246 void TestReservedSpace_test(); 247 void TestReserveMemorySpecial_test(); 248 void TestVirtualSpace_test(); 249 #endif 250 251 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) 252 #ifndef PRODUCT 253 TestReservedSpace_test(); 254 TestReserveMemorySpecial_test(); 255 TestVirtualSpace_test(); 256 #endif 257 WB_END 258 259 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 260 size_t granularity = os::vm_allocation_granularity(); 261 ReservedHeapSpace rhs(100 * granularity, granularity, false); 262 VirtualSpace vs; 263 vs.initialize(rhs, 50 * granularity); 264 265 // Check if constraints are complied 266 if (!( UseCompressedOops && rhs.base() != NULL && 267 CompressedOops::base() != NULL && 268 CompressedOops::use_implicit_null_checks() )) { 269 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 270 "\tUseCompressedOops is %d\n" 271 "\trhs.base() is " PTR_FORMAT "\n" 272 "\tCompressedOops::base() is " PTR_FORMAT "\n" 273 "\tCompressedOops::use_implicit_null_checks() is %d", 274 UseCompressedOops, 275 p2i(rhs.base()), 276 p2i(CompressedOops::base()), 277 CompressedOops::use_implicit_null_checks()); 278 return; 279 } 280 tty->print_cr("Reading from no access area... "); 281 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 282 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 283 WB_END 284 285 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 286 size_t magnitude, size_t iterations) { 287 size_t granularity = os::vm_allocation_granularity(); 288 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false); 289 VirtualSpace vs; 290 if (!vs.initialize(rhs, 0)) { 291 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 292 return 3; 293 } 294 295 int seed = os::random(); 296 tty->print_cr("Random seed is %d", seed); 297 os::init_random(seed); 298 299 for (size_t i = 0; i < iterations; i++) { 300 301 // Whether we will shrink or grow 302 bool shrink = os::random() % 2L == 0; 303 304 // Get random delta to resize virtual space 305 size_t delta = (size_t)os::random() % magnitude; 306 307 // If we are about to shrink virtual space below zero, then expand instead 308 if (shrink && vs.committed_size() < delta) { 309 shrink = false; 310 } 311 312 // Resizing by delta 313 if (shrink) { 314 vs.shrink_by(delta); 315 } else { 316 // If expanding fails expand_by will silently return false 317 vs.expand_by(delta, true); 318 } 319 } 320 return 0; 321 } 322 323 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 324 jlong reserved_space_size, jlong magnitude, jlong iterations)) 325 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 326 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 327 iterations); 328 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 329 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 330 return 1; 331 } 332 333 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 334 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 335 if (sizeof(size_t) < sizeof(jlong)) { 336 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; 337 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 338 || iterations > size_t_max_value) { 339 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 340 return 2; 341 } 342 } 343 344 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 345 (size_t) magnitude, (size_t) iterations); 346 WB_END 347 348 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name)) 349 return GCConfig::is_gc_supported((CollectedHeap::Name)name); 350 WB_END 351 352 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name)) 353 return GCConfig::is_gc_selected((CollectedHeap::Name)name); 354 WB_END 355 356 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o)) 357 return GCConfig::is_gc_selected_ergonomically(); 358 WB_END 359 360 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 361 oop p = JNIHandles::resolve(obj); 362 #if INCLUDE_G1GC 363 if (UseG1GC) { 364 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 365 const HeapRegion* hr = g1h->heap_region_containing(p); 366 if (hr == NULL) { 367 return false; 368 } 369 return !(hr->is_young()); 370 } 371 #endif 372 #if INCLUDE_PARALLELGC 373 if (UseParallelGC) { 374 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 375 return !psh->is_in_young(p); 376 } 377 #endif 378 #if INCLUDE_ZGC 379 if (UseZGC) { 380 return Universe::heap()->is_in(p); 381 } 382 #endif 383 GenCollectedHeap* gch = GenCollectedHeap::heap(); 384 return !gch->is_in_young(p); 385 WB_END 386 387 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 388 oop p = JNIHandles::resolve(obj); 389 return Universe::heap()->obj_size(p) * HeapWordSize; 390 WB_END 391 392 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 393 return (jlong)SpaceAlignment; 394 WB_END 395 396 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 397 return (jlong)HeapAlignment; 398 WB_END 399 400 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o)) 401 return Universe::heap()->supports_concurrent_gc_breakpoints(); 402 WB_END 403 404 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o)) 405 ConcurrentGCBreakpoints::acquire_control(); 406 WB_END 407 408 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o)) 409 ConcurrentGCBreakpoints::release_control(); 410 WB_END 411 412 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o)) 413 ConcurrentGCBreakpoints::run_to_idle(); 414 WB_END 415 416 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at)) 417 Handle h_name(THREAD, JNIHandles::resolve(at)); 418 ResourceMark rm; 419 const char* c_name = java_lang_String::as_utf8_string(h_name()); 420 return ConcurrentGCBreakpoints::run_to(c_name); 421 WB_END 422 423 #if INCLUDE_G1GC 424 425 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 426 if (UseG1GC) { 427 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 428 oop result = JNIHandles::resolve(obj); 429 const HeapRegion* hr = g1h->heap_region_containing(result); 430 return hr->is_humongous(); 431 } 432 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 433 WB_END 434 435 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 436 if (UseG1GC) { 437 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 438 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 439 return hr->is_humongous(); 440 } 441 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 442 WB_END 443 444 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 445 if (UseG1GC) { 446 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 447 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 448 return hr->is_free(); 449 } 450 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 451 WB_END 452 453 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 454 if (UseG1GC) { 455 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 456 size_t nr = g1h->max_regions(); 457 return (jlong)nr; 458 } 459 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 460 WB_END 461 462 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 463 if (UseG1GC) { 464 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 465 size_t nr = g1h->num_free_regions(); 466 return (jlong)nr; 467 } 468 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 469 WB_END 470 471 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 472 if (UseG1GC) { 473 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 474 return g1h->concurrent_mark()->cm_thread()->during_cycle(); 475 } 476 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 477 WB_END 478 479 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o)) 480 if (UseG1GC) { 481 if (AsyncDeflateIdleMonitors) { 482 // AsyncDeflateIdleMonitors needs to know when System.gc() or 483 // the equivalent is called so any special clean up can be done 484 // at a safepoint, e.g., TestHumongousClassLoader.java. 485 ObjectSynchronizer::set_is_special_deflation_requested(true); 486 } 487 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 488 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) { 489 g1h->collect(GCCause::_wb_conc_mark); 490 return true; 491 } 492 return false; 493 } 494 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled"); 495 WB_END 496 497 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 498 if (UseG1GC) { 499 return (jint)HeapRegion::GrainBytes; 500 } 501 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 502 WB_END 503 504 #endif // INCLUDE_G1GC 505 506 #if INCLUDE_G1GC || INCLUDE_PARALLELGC 507 WB_ENTRY(jlong, WB_DramReservedStart(JNIEnv* env, jobject o)) 508 #if INCLUDE_G1GC 509 if (UseG1GC) { 510 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 511 if (g1h->is_heterogeneous_heap()) { 512 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_dram(); 513 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes); 514 } else { 515 return (jlong)g1h->base(); 516 } 517 } 518 #endif // INCLUDE_G1GC 519 #if INCLUDE_PARALLELGC 520 if (UseParallelGC) { 521 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 522 if (AllocateOldGenAt != NULL) { 523 MemRegion reserved = ps_heap->young_gen()->reserved(); 524 return (jlong)reserved.start(); 525 } else { 526 return (jlong)ps_heap->base(); 527 } 528 } 529 #endif // INCLUDE_PARALLELGC 530 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedStart: enabled only for G1 and Parallel GC"); 531 WB_END 532 533 WB_ENTRY(jlong, WB_DramReservedEnd(JNIEnv* env, jobject o)) 534 #if INCLUDE_G1GC 535 if (UseG1GC) { 536 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 537 if (g1h->is_heterogeneous_heap()) { 538 uint end_region = HeterogeneousHeapRegionManager::manager()->end_index_of_dram(); 539 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1); 540 } else { 541 return (jlong)g1h->base() + G1Arguments::heap_max_size_bytes(); 542 } 543 } 544 #endif // INCLUDE_G1GC 545 #if INCLUDE_PARALLELGC 546 if (UseParallelGC) { 547 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 548 if (AllocateOldGenAt != NULL) { 549 MemRegion reserved = ps_heap->young_gen()->reserved(); 550 return (jlong)reserved.end(); 551 } else { 552 return (jlong)ps_heap->reserved_region().end(); 553 } 554 } 555 #endif // INCLUDE_PARALLELGC 556 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedEnd: enabled only for G1 and Parallel GC"); 557 WB_END 558 559 WB_ENTRY(jlong, WB_NvdimmReservedStart(JNIEnv* env, jobject o)) 560 #if INCLUDE_G1GC 561 if (UseG1GC) { 562 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 563 if (g1h->is_heterogeneous_heap()) { 564 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm(); 565 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes); 566 } else { 567 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 568 } 569 } 570 #endif // INCLUDE_G1GC 571 #if INCLUDE_PARALLELGC 572 if (UseParallelGC) { 573 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 574 if (AllocateOldGenAt != NULL) { 575 MemRegion reserved = ps_heap->old_gen()->reserved(); 576 return (jlong)reserved.start(); 577 } else { 578 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 579 } 580 } 581 #endif // INCLUDE_PARALLELGC 582 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: enabled only for G1 and Parallel GC"); 583 WB_END 584 585 WB_ENTRY(jlong, WB_NvdimmReservedEnd(JNIEnv* env, jobject o)) 586 #if INCLUDE_G1GC 587 if (UseG1GC) { 588 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 589 if (g1h->is_heterogeneous_heap()) { 590 uint end_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm(); 591 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1); 592 } else { 593 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 594 } 595 } 596 #endif // INCLUDE_G1GC 597 #if INCLUDE_PARALLELGC 598 if (UseParallelGC) { 599 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 600 if (AllocateOldGenAt != NULL) { 601 MemRegion reserved = ps_heap->old_gen()->reserved(); 602 return (jlong)reserved.end(); 603 } else { 604 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 605 } 606 } 607 #endif // INCLUDE_PARALLELGC 608 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: enabled only for G1 and Parallel GC"); 609 WB_END 610 611 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC 612 613 #if INCLUDE_PARALLELGC 614 615 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 616 if (UseParallelGC) { 617 return GenAlignment; 618 } 619 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 620 WB_END 621 622 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 623 if (UseParallelGC) { 624 return GenAlignment; 625 } 626 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 627 WB_END 628 629 #endif // INCLUDE_PARALLELGC 630 631 #if INCLUDE_G1GC 632 633 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 634 if (UseG1GC) { 635 ResourceMark rm(THREAD); 636 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 637 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 638 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 639 return JNIHandles::make_local(env, h()); 640 } 641 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 642 WB_END 643 644 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o)) 645 if (UseG1GC) { 646 G1NUMA* numa = G1NUMA::numa(); 647 return (jint)numa->num_active_nodes(); 648 } 649 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled"); 650 WB_END 651 652 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o)) 653 if (UseG1GC) { 654 G1NUMA* numa = G1NUMA::numa(); 655 int num_node_ids = (int)numa->num_active_nodes(); 656 const int* node_ids = numa->node_ids(); 657 658 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL); 659 for (int i = 0; i < num_node_ids; i++) { 660 result->int_at_put(i, (jint)node_ids[i]); 661 } 662 return (jintArray) JNIHandles::make_local(env, result); 663 } 664 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled"); 665 WB_END 666 667 class OldRegionsLivenessClosure: public HeapRegionClosure { 668 669 private: 670 const int _liveness; 671 size_t _total_count; 672 size_t _total_memory; 673 size_t _total_memory_to_free; 674 675 public: 676 OldRegionsLivenessClosure(int liveness) : 677 _liveness(liveness), 678 _total_count(0), 679 _total_memory(0), 680 _total_memory_to_free(0) { } 681 682 size_t total_count() { return _total_count; } 683 size_t total_memory() { return _total_memory; } 684 size_t total_memory_to_free() { return _total_memory_to_free; } 685 686 bool do_heap_region(HeapRegion* r) { 687 if (r->is_old()) { 688 size_t prev_live = r->marked_bytes(); 689 size_t live = r->live_bytes(); 690 size_t size = r->used(); 691 size_t reg_size = HeapRegion::GrainBytes; 692 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 693 _total_memory += size; 694 ++_total_count; 695 if (size == reg_size) { 696 // we don't include non-full regions since they are unlikely included in mixed gc 697 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 698 _total_memory_to_free += size - prev_live; 699 } 700 } 701 } 702 return false; 703 } 704 }; 705 706 707 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 708 if (!UseG1GC) { 709 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 710 } 711 if (liveness < 0) { 712 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 713 } 714 715 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 716 OldRegionsLivenessClosure rli(liveness); 717 g1h->heap_region_iterate(&rli); 718 719 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 720 result->long_at_put(0, rli.total_count()); 721 result->long_at_put(1, rli.total_memory()); 722 result->long_at_put(2, rli.total_memory_to_free()); 723 return (jlongArray) JNIHandles::make_local(env, result); 724 WB_END 725 726 #endif // INCLUDE_G1GC 727 728 #if INCLUDE_NMT 729 // Alloc memory using the test memory type so that we can use that to see if 730 // NMT picks it up correctly 731 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 732 jlong addr = 0; 733 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 734 return addr; 735 WB_END 736 737 // Alloc memory with pseudo call stack. The test can create psudo malloc 738 // allocation site to stress the malloc tracking. 739 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 740 address pc = (address)(size_t)pseudo_stack; 741 NativeCallStack stack(&pc, 1); 742 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 743 WB_END 744 745 // Alloc memory with pseudo call stack and specific memory type. 746 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type)) 747 address pc = (address)(size_t)pseudo_stack; 748 NativeCallStack stack(&pc, 1); 749 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack); 750 WB_END 751 752 // Free the memory allocated by NMTAllocTest 753 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 754 os::free((void*)(uintptr_t)mem); 755 WB_END 756 757 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 758 jlong addr = 0; 759 760 addr = (jlong)(uintptr_t)os::reserve_memory(size); 761 MemTracker::record_virtual_memory_type((address)addr, mtTest); 762 763 return addr; 764 WB_END 765 766 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size)) 767 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr); 768 MemTracker::record_virtual_memory_type((address)addr, mtTest); 769 770 return addr; 771 WB_END 772 773 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 774 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 775 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 776 WB_END 777 778 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 779 os::uncommit_memory((char *)(uintptr_t)addr, size); 780 WB_END 781 782 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 783 os::release_memory((char *)(uintptr_t)addr, size); 784 WB_END 785 786 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env)) 787 // Test that we can downgrade NMT levels but not upgrade them. 788 if (MemTracker::tracking_level() == NMT_off) { 789 MemTracker::transition_to(NMT_off); 790 return MemTracker::tracking_level() == NMT_off; 791 } else { 792 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking"); 793 MemTracker::transition_to(NMT_summary); 794 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now"); 795 796 // Can't go to detail once NMT is set to summary. 797 MemTracker::transition_to(NMT_detail); 798 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now"); 799 800 // Shutdown sets tracking level to minimal. 801 MemTracker::shutdown(); 802 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); 803 804 // Once the tracking level is minimal, we cannot increase to summary. 805 // The code ignores this request instead of asserting because if the malloc site 806 // table overflows in another thread, it tries to change the code to summary. 807 MemTracker::transition_to(NMT_summary); 808 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 809 810 // Really can never go up to detail, verify that the code would never do this. 811 MemTracker::transition_to(NMT_detail); 812 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 813 return MemTracker::tracking_level() == NMT_minimal; 814 } 815 WB_END 816 817 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 818 int hash_size = MallocSiteTable::hash_buckets(); 819 assert(hash_size > 0, "NMT hash_size should be > 0"); 820 return (jint)hash_size; 821 WB_END 822 823 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size)) 824 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size)); 825 return (jlong)arena; 826 WB_END 827 828 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena)) 829 Arena* a = (Arena*)arena; 830 delete a; 831 WB_END 832 833 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size)) 834 Arena* a = (Arena*)arena; 835 a->Amalloc(size_t(size)); 836 WB_END 837 #endif // INCLUDE_NMT 838 839 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 840 assert(method != NULL, "method should not be null"); 841 ThreadToNativeFromVM ttn(thread); 842 return env->FromReflectedMethod(method); 843 } 844 845 static CompLevel highestCompLevel() { 846 return TieredCompilation ? MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) : CompLevel_highest_tier; 847 } 848 849 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 850 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 851 private: 852 int _result; 853 const bool _make_not_entrant; 854 public: 855 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 856 _result(0), _make_not_entrant(make_not_entrant) { } 857 int result() const { return _result; } 858 859 void doit() { 860 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 861 if (t->has_last_Java_frame()) { 862 for (StackFrameStream fst(t, false); !fst.is_done(); fst.next()) { 863 frame* f = fst.current(); 864 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 865 Deoptimization::deoptimize(t, *f); 866 if (_make_not_entrant) { 867 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 868 assert(cm != NULL, "sanity check"); 869 cm->make_not_entrant(); 870 } 871 ++_result; 872 } 873 } 874 } 875 } 876 } 877 }; 878 879 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 880 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 881 VMThread::execute(&op); 882 return op.result(); 883 WB_END 884 885 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 886 CodeCache::mark_all_nmethods_for_deoptimization(); 887 Deoptimization::deoptimize_all_marked(); 888 WB_END 889 890 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 891 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 892 int result = 0; 893 CHECK_JNI_EXCEPTION_(env, result); 894 MutexLocker mu(Compile_lock); 895 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 896 if (is_osr) { 897 result += mh->mark_osr_nmethods(); 898 } else if (mh->code() != NULL) { 899 mh->code()->mark_for_deoptimization(); 900 ++result; 901 } 902 result += CodeCache::mark_for_deoptimization(mh()); 903 if (result > 0) { 904 Deoptimization::deoptimize_all_marked(); 905 } 906 return result; 907 WB_END 908 909 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 910 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 911 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 912 MutexLocker mu(Compile_lock); 913 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 914 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 915 if (code == NULL) { 916 return JNI_FALSE; 917 } 918 return (code->is_alive() && !code->is_marked_for_deoptimization()); 919 WB_END 920 921 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 922 if (method == NULL || comp_level > highestCompLevel()) { 923 return false; 924 } 925 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 926 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 927 MutexLocker mu(Compile_lock); 928 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 929 if (is_osr) { 930 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); 931 } else { 932 return CompilationPolicy::can_be_compiled(mh, comp_level); 933 } 934 WB_END 935 936 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 937 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 938 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 939 MutexLocker mu(Compile_lock); 940 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 941 return mh->queued_for_compilation(); 942 WB_END 943 944 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 945 if (compLevel < CompLevel_none || compLevel > highestCompLevel()) { 946 return false; // Intrinsic is not available on a non-existent compilation level. 947 } 948 jmethodID method_id, compilation_context_id; 949 method_id = reflected_method_to_jmid(thread, env, method); 950 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 951 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 952 953 DirectiveSet* directive; 954 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 955 assert(comp != NULL, "compiler not available"); 956 if (compilation_context != NULL) { 957 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 958 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 959 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 960 directive = DirectivesStack::getMatchingDirective(cch, comp); 961 } else { 962 // Calling with NULL matches default directive 963 directive = DirectivesStack::getDefaultDirective(comp); 964 } 965 bool result = comp->is_intrinsic_available(mh, directive); 966 DirectivesStack::release(directive); 967 return result; 968 WB_END 969 970 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 971 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 972 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 973 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 974 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 975 return (code != NULL ? code->comp_level() : CompLevel_none); 976 WB_END 977 978 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 979 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 980 CHECK_JNI_EXCEPTION(env); 981 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 982 if (is_osr) { 983 mh->set_not_osr_compilable("WhiteBox", comp_level); 984 } else { 985 mh->set_not_compilable("WhiteBox", comp_level); 986 } 987 WB_END 988 989 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 990 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 991 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 992 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 993 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 994 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 995 WB_END 996 997 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 998 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 999 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1000 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1001 bool result = mh->dont_inline(); 1002 mh->set_dont_inline(value == JNI_TRUE); 1003 return result; 1004 WB_END 1005 1006 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 1007 if (comp_level == CompLevel_any) { 1008 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 1009 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 1010 } else { 1011 return CompileBroker::queue_size(comp_level); 1012 } 1013 WB_END 1014 1015 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1016 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1017 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1018 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1019 bool result = mh->force_inline(); 1020 mh->set_force_inline(value == JNI_TRUE); 1021 return result; 1022 WB_END 1023 1024 #ifdef LINUX 1025 bool WhiteBox::validate_cgroup(const char* proc_cgroups, 1026 const char* proc_self_cgroup, 1027 const char* proc_self_mountinfo, 1028 u1* cg_flags) { 1029 CgroupInfo cg_infos[4]; 1030 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups, 1031 proc_self_cgroup, 1032 proc_self_mountinfo, cg_flags); 1033 } 1034 #endif 1035 1036 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) { 1037 // Screen for unavailable/bad comp level or null method 1038 AbstractCompiler* comp = CompileBroker::compiler(comp_level); 1039 if (method == NULL) { 1040 tty->print_cr("WB error: request to compile NULL method"); 1041 return false; 1042 } 1043 if (comp_level > highestCompLevel()) { 1044 tty->print_cr("WB error: invalid compilation level %d", comp_level); 1045 return false; 1046 } 1047 if (comp == NULL) { 1048 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level); 1049 return false; 1050 } 1051 1052 // Check if compilation is blocking 1053 methodHandle mh(THREAD, method); 1054 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 1055 bool is_blocking = !directive->BackgroundCompilationOption; 1056 DirectivesStack::release(directive); 1057 1058 // Compile method and check result 1059 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD); 1060 MutexLocker mu(THREAD, Compile_lock); 1061 bool is_queued = mh->queued_for_compilation(); 1062 if ((!is_blocking && is_queued) || nm != NULL) { 1063 return true; 1064 } 1065 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level); 1066 mh->print_short_name(tty); 1067 tty->cr(); 1068 if (is_blocking && is_queued) { 1069 tty->print_cr("WB error: blocking compilation is still in queue!"); 1070 } 1071 return false; 1072 } 1073 1074 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 1075 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1076 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1077 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 1078 WB_END 1079 1080 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 1081 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1082 Method* clinit = ik->class_initializer(); 1083 if (clinit == NULL) { 1084 return false; 1085 } 1086 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD); 1087 WB_END 1088 1089 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 1090 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1091 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1092 1093 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1094 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 1095 bool result = directive->PrintAssemblyOption; 1096 DirectivesStack::release(directive); 1097 1098 return result; 1099 WB_END 1100 1101 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1102 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1103 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1104 1105 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1106 1107 ResourceMark rm(THREAD); 1108 const char* error_msg = NULL; 1109 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1110 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 1111 1112 if (m == NULL) { 1113 assert(error_msg != NULL, "Always have an error message"); 1114 tty->print_cr("Got error: %s", error_msg); 1115 return -1; // Pattern failed 1116 } 1117 1118 // Pattern works - now check if it matches 1119 int result; 1120 if (m->match(mh, InlineMatcher::force_inline)) { 1121 result = 2; // Force inline match 1122 } else if (m->match(mh, InlineMatcher::dont_inline)) { 1123 result = 1; // Dont inline match 1124 } else { 1125 result = 0; // No match 1126 } 1127 delete m; 1128 return result; 1129 WB_END 1130 1131 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1132 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1133 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1134 1135 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1136 1137 ResourceMark rm; 1138 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1139 1140 const char* error_msg = NULL; 1141 1142 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg); 1143 if (m == NULL) { 1144 assert(error_msg != NULL, "Must have error_msg"); 1145 tty->print_cr("Got error: %s", error_msg); 1146 return -1; 1147 } 1148 1149 // Pattern works - now check if it matches 1150 int result = m->matches(mh); 1151 delete m; 1152 assert(result == 0 || result == 1, "Result out of range"); 1153 return result; 1154 WB_END 1155 1156 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method)) 1157 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1158 CHECK_JNI_EXCEPTION(env); 1159 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1160 1161 MethodData* mdo = mh->method_data(); 1162 if (mdo == NULL) { 1163 Method::build_interpreter_method_data(mh, CHECK_AND_CLEAR); 1164 mdo = mh->method_data(); 1165 } 1166 mdo->init(); 1167 InvocationCounter* icnt = mdo->invocation_counter(); 1168 InvocationCounter* bcnt = mdo->backedge_counter(); 1169 // set i-counter according to TieredThresholdPolicy::is_method_profiled 1170 icnt->set(Tier4MinInvocationThreshold); 1171 bcnt->set(Tier4CompileThreshold); 1172 WB_END 1173 1174 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 1175 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1176 CHECK_JNI_EXCEPTION(env); 1177 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1178 MutexLocker mu(THREAD, Compile_lock); 1179 MethodData* mdo = mh->method_data(); 1180 MethodCounters* mcs = mh->method_counters(); 1181 1182 if (mdo != NULL) { 1183 mdo->init(); 1184 ResourceMark rm(THREAD); 1185 int arg_count = mdo->method()->size_of_parameters(); 1186 for (int i = 0; i < arg_count; i++) { 1187 mdo->set_arg_modified(i, 0); 1188 } 1189 MutexLocker mu(THREAD, mdo->extra_data_lock()); 1190 mdo->clean_method_data(/*always_clean*/true); 1191 } 1192 1193 mh->clear_not_c1_compilable(); 1194 mh->clear_not_c2_compilable(); 1195 mh->clear_not_c2_osr_compilable(); 1196 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 1197 if (mcs != NULL) { 1198 mcs->backedge_counter()->init(); 1199 mcs->invocation_counter()->init(); 1200 mcs->set_interpreter_invocation_count(0); 1201 mcs->set_interpreter_throwout_count(0); 1202 1203 #ifdef TIERED 1204 mcs->set_rate(0.0F); 1205 mh->set_prev_event_count(0); 1206 mh->set_prev_time(0); 1207 #endif 1208 } 1209 WB_END 1210 1211 template <typename T> 1212 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const JVMFlag*, T*)) { 1213 if (name == NULL) { 1214 return false; 1215 } 1216 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1217 const char* flag_name = env->GetStringUTFChars(name, NULL); 1218 CHECK_JNI_EXCEPTION_(env, false); 1219 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name); 1220 JVMFlag::Error result = (*TAt)(flag, value); 1221 env->ReleaseStringUTFChars(name, flag_name); 1222 return (result == JVMFlag::SUCCESS); 1223 } 1224 1225 template <typename T> 1226 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(JVMFlag* flag, T*, JVMFlag::Flags)) { 1227 if (name == NULL) { 1228 return false; 1229 } 1230 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1231 const char* flag_name = env->GetStringUTFChars(name, NULL); 1232 CHECK_JNI_EXCEPTION_(env, false); 1233 JVMFlag* flag = JVMFlag::find_flag(flag_name); 1234 JVMFlag::Error result = (*TAtPut)(flag, value, JVMFlag::INTERNAL); 1235 env->ReleaseStringUTFChars(name, flag_name); 1236 return (result == JVMFlag::SUCCESS); 1237 } 1238 1239 template <typename T> 1240 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1241 ResourceMark rm(thread); 1242 jclass clazz = env->FindClass(name->as_C_string()); 1243 CHECK_JNI_EXCEPTION_(env, NULL); 1244 jmethodID methodID = env->GetStaticMethodID(clazz, 1245 vmSymbols::valueOf_name()->as_C_string(), 1246 sig->as_C_string()); 1247 CHECK_JNI_EXCEPTION_(env, NULL); 1248 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1249 CHECK_JNI_EXCEPTION_(env, NULL); 1250 return result; 1251 } 1252 1253 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1254 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1255 } 1256 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1257 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1258 } 1259 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1260 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1261 } 1262 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1263 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1264 }*/ 1265 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1266 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1267 } 1268 1269 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1270 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1271 const char* flag_name = env->GetStringUTFChars(name, NULL); 1272 CHECK_JNI_EXCEPTION_(env, NULL); 1273 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name); 1274 env->ReleaseStringUTFChars(name, flag_name); 1275 return result; 1276 } 1277 1278 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1279 const JVMFlag* flag = getVMFlag(thread, env, name); 1280 return (flag != NULL) && flag->is_constant_in_binary(); 1281 WB_END 1282 1283 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1284 const JVMFlag* flag = getVMFlag(thread, env, name); 1285 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 1286 WB_END 1287 1288 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1289 bool result; 1290 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) { 1291 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1292 return booleanBox(thread, env, result); 1293 } 1294 return NULL; 1295 WB_END 1296 1297 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1298 int result; 1299 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) { 1300 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1301 return longBox(thread, env, result); 1302 } 1303 return NULL; 1304 WB_END 1305 1306 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1307 uint result; 1308 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) { 1309 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1310 return longBox(thread, env, result); 1311 } 1312 return NULL; 1313 WB_END 1314 1315 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1316 intx result; 1317 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) { 1318 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1319 return longBox(thread, env, result); 1320 } 1321 return NULL; 1322 WB_END 1323 1324 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1325 uintx result; 1326 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) { 1327 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1328 return longBox(thread, env, result); 1329 } 1330 return NULL; 1331 WB_END 1332 1333 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1334 uint64_t result; 1335 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) { 1336 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1337 return longBox(thread, env, result); 1338 } 1339 return NULL; 1340 WB_END 1341 1342 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1343 size_t result; 1344 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) { 1345 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1346 return longBox(thread, env, result); 1347 } 1348 return NULL; 1349 WB_END 1350 1351 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1352 double result; 1353 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) { 1354 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1355 return doubleBox(thread, env, result); 1356 } 1357 return NULL; 1358 WB_END 1359 1360 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1361 ccstr ccstrResult; 1362 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) { 1363 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1364 jstring result = env->NewStringUTF(ccstrResult); 1365 CHECK_JNI_EXCEPTION_(env, NULL); 1366 return result; 1367 } 1368 return NULL; 1369 WB_END 1370 1371 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1372 bool result = value == JNI_TRUE ? true : false; 1373 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut); 1374 WB_END 1375 1376 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1377 int result = value; 1378 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut); 1379 WB_END 1380 1381 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1382 uint result = value; 1383 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut); 1384 WB_END 1385 1386 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1387 intx result = value; 1388 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut); 1389 WB_END 1390 1391 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1392 uintx result = value; 1393 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut); 1394 WB_END 1395 1396 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1397 uint64_t result = value; 1398 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut); 1399 WB_END 1400 1401 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1402 size_t result = value; 1403 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut); 1404 WB_END 1405 1406 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1407 double result = value; 1408 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut); 1409 WB_END 1410 1411 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1412 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1413 const char* ccstrValue; 1414 if (value == NULL) { 1415 ccstrValue = NULL; 1416 } 1417 else { 1418 ccstrValue = env->GetStringUTFChars(value, NULL); 1419 CHECK_JNI_EXCEPTION(env); 1420 } 1421 ccstr ccstrResult = ccstrValue; 1422 bool needFree; 1423 { 1424 ThreadInVMfromNative ttvfn(thread); // back to VM 1425 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut); 1426 } 1427 if (value != NULL) { 1428 env->ReleaseStringUTFChars(value, ccstrValue); 1429 } 1430 if (needFree) { 1431 FREE_C_HEAP_ARRAY(char, ccstrResult); 1432 } 1433 WB_END 1434 1435 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1436 WhiteBox::compilation_locked = true; 1437 WB_END 1438 1439 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1440 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1441 WhiteBox::compilation_locked = false; 1442 mo.notify_all(); 1443 WB_END 1444 1445 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 1446 // Force a code cache sweep and block until it finished 1447 NMethodSweeper::force_sweep(); 1448 WB_END 1449 1450 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1451 ResourceMark rm(THREAD); 1452 int len; 1453 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1454 return (StringTable::lookup(name, len) != NULL); 1455 WB_END 1456 1457 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1458 if (AsyncDeflateIdleMonitors) { 1459 // AsyncDeflateIdleMonitors needs to know when System.gc() or 1460 // the equivalent is called so any special clean up can be done 1461 // at a safepoint, e.g., TestHumongousClassLoader.java. 1462 ObjectSynchronizer::set_is_special_deflation_requested(true); 1463 } 1464 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1465 Universe::heap()->collect(GCCause::_wb_full_gc); 1466 #if INCLUDE_G1GC 1467 if (UseG1GC) { 1468 // Needs to be cleared explicitly for G1 1469 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1470 } 1471 #endif // INCLUDE_G1GC 1472 WB_END 1473 1474 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1475 Universe::heap()->collect(GCCause::_wb_young_gc); 1476 WB_END 1477 1478 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1479 // static+volatile in order to force the read to happen 1480 // (not be eliminated by the compiler) 1481 static char c; 1482 static volatile char* p; 1483 1484 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 1485 if (p == NULL) { 1486 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1487 } 1488 1489 c = *p; 1490 WB_END 1491 1492 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1493 const char* features = VM_Version::features_string(); 1494 ThreadToNativeFromVM ttn(thread); 1495 jstring features_string = env->NewStringUTF(features); 1496 1497 CHECK_JNI_EXCEPTION_(env, NULL); 1498 1499 return features_string; 1500 WB_END 1501 1502 int WhiteBox::get_blob_type(const CodeBlob* code) { 1503 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1504 if (code->is_aot()) { 1505 return -1; 1506 } 1507 return CodeCache::get_code_heap(code)->code_blob_type(); 1508 } 1509 1510 CodeHeap* WhiteBox::get_code_heap(int blob_type) { 1511 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1512 return CodeCache::get_code_heap(blob_type); 1513 } 1514 1515 struct CodeBlobStub { 1516 CodeBlobStub(const CodeBlob* blob) : 1517 name(os::strdup(blob->name())), 1518 size(blob->size()), 1519 blob_type(WhiteBox::get_blob_type(blob)), 1520 address((jlong) blob) { } 1521 ~CodeBlobStub() { os::free((void*) name); } 1522 const char* const name; 1523 const jint size; 1524 const jint blob_type; 1525 const jlong address; 1526 }; 1527 1528 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1529 ResourceMark rm; 1530 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1531 CHECK_JNI_EXCEPTION_(env, NULL); 1532 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1533 1534 jstring name = env->NewStringUTF(cb->name); 1535 CHECK_JNI_EXCEPTION_(env, NULL); 1536 env->SetObjectArrayElement(result, 0, name); 1537 1538 jobject obj = integerBox(thread, env, cb->size); 1539 CHECK_JNI_EXCEPTION_(env, NULL); 1540 env->SetObjectArrayElement(result, 1, obj); 1541 1542 obj = integerBox(thread, env, cb->blob_type); 1543 CHECK_JNI_EXCEPTION_(env, NULL); 1544 env->SetObjectArrayElement(result, 2, obj); 1545 1546 obj = longBox(thread, env, cb->address); 1547 CHECK_JNI_EXCEPTION_(env, NULL); 1548 env->SetObjectArrayElement(result, 3, obj); 1549 1550 return result; 1551 } 1552 1553 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1554 ResourceMark rm(THREAD); 1555 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1556 CHECK_JNI_EXCEPTION_(env, NULL); 1557 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1558 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1559 jobjectArray result = NULL; 1560 if (code == NULL) { 1561 return result; 1562 } 1563 int comp_level = code->comp_level(); 1564 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size(); 1565 1566 ThreadToNativeFromVM ttn(thread); 1567 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1568 CHECK_JNI_EXCEPTION_(env, NULL); 1569 result = env->NewObjectArray(5, clazz, NULL); 1570 if (result == NULL) { 1571 return result; 1572 } 1573 1574 CodeBlobStub stub(code); 1575 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1576 CHECK_JNI_EXCEPTION_(env, NULL); 1577 env->SetObjectArrayElement(result, 0, codeBlob); 1578 1579 jobject level = integerBox(thread, env, comp_level); 1580 CHECK_JNI_EXCEPTION_(env, NULL); 1581 env->SetObjectArrayElement(result, 1, level); 1582 1583 jbyteArray insts = env->NewByteArray(insts_size); 1584 CHECK_JNI_EXCEPTION_(env, NULL); 1585 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1586 env->SetObjectArrayElement(result, 2, insts); 1587 1588 jobject id = integerBox(thread, env, code->compile_id()); 1589 CHECK_JNI_EXCEPTION_(env, NULL); 1590 env->SetObjectArrayElement(result, 3, id); 1591 1592 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1593 CHECK_JNI_EXCEPTION_(env, NULL); 1594 env->SetObjectArrayElement(result, 4, entry_point); 1595 1596 return result; 1597 WB_END 1598 1599 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1600 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1601 BufferBlob* blob; 1602 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1603 if (full_size < size) { 1604 full_size += align_up(size - full_size, oopSize); 1605 } 1606 { 1607 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1608 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1609 if (blob != NULL) { 1610 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1611 } 1612 } 1613 // Track memory usage statistic after releasing CodeCache_lock 1614 MemoryService::track_code_cache_memory_usage(); 1615 return blob; 1616 } 1617 1618 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1619 if (size < 0) { 1620 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1621 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1622 } 1623 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1624 WB_END 1625 1626 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1627 if (addr == 0) { 1628 return; 1629 } 1630 BufferBlob::free((BufferBlob*) addr); 1631 WB_END 1632 1633 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1634 ResourceMark rm; 1635 GrowableArray<CodeBlobStub*> blobs; 1636 { 1637 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1638 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1639 if (heap == NULL) { 1640 return NULL; 1641 } 1642 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1643 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1644 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1645 new (stub) CodeBlobStub(cb); 1646 blobs.append(stub); 1647 } 1648 } 1649 ThreadToNativeFromVM ttn(thread); 1650 jobjectArray result = NULL; 1651 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1652 CHECK_JNI_EXCEPTION_(env, NULL); 1653 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1654 CHECK_JNI_EXCEPTION_(env, NULL); 1655 if (result == NULL) { 1656 return result; 1657 } 1658 int i = 0; 1659 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1660 it != blobs.end(); ++it) { 1661 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1662 CHECK_JNI_EXCEPTION_(env, NULL); 1663 env->SetObjectArrayElement(result, i, obj); 1664 CHECK_JNI_EXCEPTION_(env, NULL); 1665 ++i; 1666 } 1667 return result; 1668 WB_END 1669 1670 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1671 return CompileBroker::get_compilation_activity_mode(); 1672 WB_END 1673 1674 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1675 if (addr == 0) { 1676 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1677 "WB_GetCodeBlob: addr is null"); 1678 } 1679 ThreadToNativeFromVM ttn(thread); 1680 CodeBlobStub stub((CodeBlob*) addr); 1681 return codeBlob2objectArray(thread, env, &stub); 1682 WB_END 1683 1684 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1685 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1686 CHECK_JNI_EXCEPTION_(env, 0); 1687 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1688 return (jlong) mh->method_data(); 1689 WB_END 1690 1691 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1692 return (jlong) Thread::current()->stack_size(); 1693 WB_END 1694 1695 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1696 JavaThread* t = JavaThread::current(); 1697 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size(); 1698 WB_END 1699 1700 1701 int WhiteBox::array_bytes_to_length(size_t bytes) { 1702 return Array<u1>::bytes_to_length(bytes); 1703 } 1704 1705 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1706 if (size < 0) { 1707 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1708 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1709 } 1710 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 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1717 1718 return (jlong)(uintptr_t)metadata; 1719 WB_END 1720 1721 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 1722 oop class_loader_oop = JNIHandles::resolve(class_loader); 1723 ClassLoaderData* cld = class_loader_oop != NULL 1724 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1725 : ClassLoaderData::the_null_class_loader_data(); 1726 1727 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 1728 WB_END 1729 1730 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1731 jstring version, jstring location, jobjectArray packages)) 1732 Modules::define_module(module, is_open, version, location, packages, CHECK); 1733 WB_END 1734 1735 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1736 Modules::add_module_exports_qualified(from_module, package, to_module, CHECK); 1737 WB_END 1738 1739 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1740 Modules::add_module_exports_to_all_unnamed(module, package, CHECK); 1741 WB_END 1742 1743 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1744 Modules::add_module_exports(module, package, NULL, CHECK); 1745 WB_END 1746 1747 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1748 Modules::add_reads_module(from_module, source_module, CHECK); 1749 WB_END 1750 1751 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1752 if (inc < 0) { 1753 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1754 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1755 } 1756 1757 jlong max_size_t = (jlong) ((size_t) -1); 1758 if (inc > max_size_t) { 1759 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1760 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1761 } 1762 1763 size_t new_cap_until_GC = 0; 1764 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1765 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1766 if (!success) { 1767 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1768 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1769 "due to contention with another thread"); 1770 } 1771 return (jlong) new_cap_until_GC; 1772 WB_END 1773 1774 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1775 return (jlong) MetaspaceGC::capacity_until_GC(); 1776 WB_END 1777 1778 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb)) 1779 return (jlong)Metaspace::reserve_alignment(); 1780 WB_END 1781 1782 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue)) 1783 Mutex::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ? 1784 Mutex::_safepoint_check_always : 1785 Mutex::_safepoint_check_never; 1786 Mutex::SafepointCheckFlag sfpt_check_attempted = attemptedNoSafepointValue ? 1787 Mutex::_no_safepoint_check_flag : 1788 Mutex::_safepoint_check_flag; 1789 MutexLocker ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required), 1790 sfpt_check_attempted); 1791 WB_END 1792 1793 WB_ENTRY(void, WB_AssertSpecialLock(JNIEnv* env, jobject o, jboolean allowVMBlock, jboolean safepointCheck)) 1794 // Create a special lock violating condition in value 1795 Mutex::SafepointCheckRequired sfpt_check_required = safepointCheck ? 1796 Mutex::_safepoint_check_always : 1797 Mutex::_safepoint_check_never; 1798 Mutex::SafepointCheckFlag safepoint_check = safepointCheck ? 1799 Monitor::_safepoint_check_flag : 1800 Monitor::_no_safepoint_check_flag; 1801 1802 MutexLocker ml(new Mutex(Mutex::special, "SpecialTest_lock", allowVMBlock, sfpt_check_required), safepoint_check); 1803 // If the lock above succeeds, try to safepoint to test the NSV implied with this special lock. 1804 ThreadBlockInVM tbivm(JavaThread::current()); 1805 WB_END 1806 1807 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1808 oop obj_oop = JNIHandles::resolve(obj); 1809 return (jboolean) obj_oop->mark().has_monitor(); 1810 WB_END 1811 1812 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1813 if (AsyncDeflateIdleMonitors) { 1814 // AsyncDeflateIdleMonitors needs to know when System.gc() or 1815 // the equivalent is called so any special clean up can be done 1816 // at a safepoint, e.g., TestRTMTotalCountIncrRate.java or 1817 // TestUseRTMForStackLocks.java. 1818 ObjectSynchronizer::set_is_special_deflation_requested(true); 1819 } 1820 VM_ForceSafepoint force_safepoint_op; 1821 VMThread::execute(&force_safepoint_op); 1822 WB_END 1823 1824 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1825 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1826 return (jlong) ik->constants(); 1827 WB_END 1828 1829 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1830 return ConstantPool::CPCACHE_INDEX_TAG; 1831 WB_END 1832 1833 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1834 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1835 ConstantPool* cp = ik->constants(); 1836 if (cp->cache() == NULL) { 1837 return -1; 1838 } 1839 return cp->cache()->length(); 1840 WB_END 1841 1842 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1843 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1844 ConstantPool* cp = ik->constants(); 1845 if (cp->cache() == NULL) { 1846 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1847 } 1848 jint cpci = index; 1849 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1850 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1851 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1852 } 1853 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1854 return cpi; 1855 WB_END 1856 1857 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1858 return ConstantPool::encode_invokedynamic_index(index); 1859 WB_END 1860 1861 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1862 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1863 VMThread::execute(&clear_ics); 1864 WB_END 1865 1866 template <typename T> 1867 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1868 assert(value != NULL, "sanity"); 1869 if (method == NULL || name == NULL) { 1870 return false; 1871 } 1872 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1873 CHECK_JNI_EXCEPTION_(env, false); 1874 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1875 // can't be in VM when we call JNI 1876 ThreadToNativeFromVM ttnfv(thread); 1877 const char* flag_name = env->GetStringUTFChars(name, NULL); 1878 CHECK_JNI_EXCEPTION_(env, false); 1879 bool result = CompilerOracle::has_option_value(mh, flag_name, *value); 1880 env->ReleaseStringUTFChars(name, flag_name); 1881 return result; 1882 } 1883 1884 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1885 bool result; 1886 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1887 // can't be in VM when we call JNI 1888 ThreadToNativeFromVM ttnfv(thread); 1889 return booleanBox(thread, env, result); 1890 } 1891 return NULL; 1892 WB_END 1893 1894 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1895 intx result; 1896 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1897 // can't be in VM when we call JNI 1898 ThreadToNativeFromVM ttnfv(thread); 1899 return longBox(thread, env, result); 1900 } 1901 return NULL; 1902 WB_END 1903 1904 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1905 uintx result; 1906 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1907 // can't be in VM when we call JNI 1908 ThreadToNativeFromVM ttnfv(thread); 1909 return longBox(thread, env, result); 1910 } 1911 return NULL; 1912 WB_END 1913 1914 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1915 double result; 1916 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1917 // can't be in VM when we call JNI 1918 ThreadToNativeFromVM ttnfv(thread); 1919 return doubleBox(thread, env, result); 1920 } 1921 return NULL; 1922 WB_END 1923 1924 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1925 ccstr ccstrResult; 1926 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 1927 // can't be in VM when we call JNI 1928 ThreadToNativeFromVM ttnfv(thread); 1929 jstring result = env->NewStringUTF(ccstrResult); 1930 CHECK_JNI_EXCEPTION_(env, NULL); 1931 return result; 1932 } 1933 return NULL; 1934 WB_END 1935 1936 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb)) 1937 const char* p = Arguments::get_default_shared_archive_path(); 1938 ThreadToNativeFromVM ttn(thread); 1939 jstring path_string = env->NewStringUTF(p); 1940 1941 CHECK_JNI_EXCEPTION_(env, NULL); 1942 1943 return path_string; 1944 WB_END 1945 1946 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb)) 1947 return UseSharedSpaces; 1948 WB_END 1949 1950 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb)) 1951 return FileMapInfo::memory_mapping_failed(); 1952 WB_END 1953 1954 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 1955 oop obj_oop = JNIHandles::resolve(obj); 1956 return HeapShared::is_archived_object(obj_oop); 1957 WB_END 1958 1959 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 1960 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1961 WB_END 1962 1963 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env)) 1964 return !HeapShared::closed_archive_heap_region_mapped(); 1965 WB_END 1966 1967 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz)) 1968 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 1969 if (k->is_instance_klass()) { 1970 InstanceKlass *ik = InstanceKlass::cast(k); 1971 ConstantPool *cp = ik->constants(); 1972 objArrayOop refs = cp->resolved_references(); 1973 return (jobject)JNIHandles::make_local(env, refs); 1974 } else { 1975 return NULL; 1976 } 1977 WB_END 1978 1979 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz)) 1980 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 1981 if (!k->is_instance_klass()) { 1982 return; 1983 } 1984 InstanceKlass *ik = InstanceKlass::cast(k); 1985 ik->link_class(THREAD); // may throw verification error 1986 WB_END 1987 1988 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 1989 return HeapShared::open_archive_heap_region_mapped(); 1990 WB_END 1991 1992 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env)) 1993 #if INCLUDE_CDS 1994 return true; 1995 #else 1996 return false; 1997 #endif // INCLUDE_CDS 1998 WB_END 1999 2000 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncludedInVmBuild(JNIEnv* env)) 2001 #if COMPILER2_OR_JVMCI 2002 return true; 2003 #else 2004 return false; 2005 #endif 2006 WB_END 2007 2008 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env)) 2009 return HeapShared::is_heap_object_archiving_allowed(); 2010 WB_END 2011 2012 2013 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env)) 2014 #if INCLUDE_JFR 2015 return true; 2016 #else 2017 return false; 2018 #endif // INCLUDE_JFR 2019 WB_END 2020 2021 #if INCLUDE_CDS 2022 2023 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name)) 2024 ResourceMark rm; 2025 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 2026 int result = CDSOffsets::find_offset(c_name); 2027 return (jint)result; 2028 WB_END 2029 2030 #endif // INCLUDE_CDS 2031 2032 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 2033 class TraceSelfClosure : public HandshakeClosure { 2034 jint _num_threads_completed; 2035 2036 void do_thread(Thread* th) { 2037 assert(th->is_Java_thread(), "sanity"); 2038 JavaThread* jt = (JavaThread*)th; 2039 ResourceMark rm; 2040 2041 jt->print_on(tty); 2042 jt->print_stack_on(tty); 2043 tty->cr(); 2044 Atomic::inc(&_num_threads_completed); 2045 } 2046 2047 public: 2048 TraceSelfClosure() : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {} 2049 2050 jint num_threads_completed() const { return _num_threads_completed; } 2051 }; 2052 TraceSelfClosure tsc; 2053 2054 if (all_threads) { 2055 Handshake::execute(&tsc); 2056 } else { 2057 oop thread_oop = JNIHandles::resolve(thread_handle); 2058 if (thread_oop != NULL) { 2059 JavaThread* target = java_lang_Thread::thread(thread_oop); 2060 Handshake::execute(&tsc, target); 2061 } 2062 } 2063 return tsc.num_threads_completed(); 2064 WB_END 2065 2066 //Some convenience methods to deal with objects from java 2067 int WhiteBox::offset_for_field(const char* field_name, oop object, 2068 Symbol* signature_symbol) { 2069 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 2070 Thread* THREAD = Thread::current(); 2071 2072 //Get the class of our object 2073 Klass* arg_klass = object->klass(); 2074 //Turn it into an instance-klass 2075 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 2076 2077 //Create symbols to look for in the class 2078 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name); 2079 2080 //To be filled in with an offset of the field we're looking for 2081 fieldDescriptor fd; 2082 2083 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 2084 if (res == NULL) { 2085 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 2086 name_symbol->as_C_string()); 2087 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 2088 } 2089 2090 //fetch the field at the offset we've found 2091 int dest_offset = fd.offset(); 2092 2093 return dest_offset; 2094 } 2095 2096 2097 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 2098 int offset = offset_for_field(field_name, object, 2099 vmSymbols::string_signature()); 2100 oop string = object->obj_field(offset); 2101 if (string == NULL) { 2102 return NULL; 2103 } 2104 const char* ret = java_lang_String::as_utf8_string(string); 2105 return ret; 2106 } 2107 2108 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 2109 int offset = 2110 offset_for_field(field_name, object, vmSymbols::bool_signature()); 2111 bool ret = (object->bool_field(offset) == JNI_TRUE); 2112 return ret; 2113 } 2114 2115 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 2116 ResourceMark rm; 2117 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 2118 2119 // one by one registration natives for exception catching 2120 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 2121 CHECK_JNI_EXCEPTION(env); 2122 for (int i = 0, n = method_count; i < n; ++i) { 2123 // Skip dummy entries 2124 if (method_array[i].fnPtr == NULL) continue; 2125 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 2126 jthrowable throwable_obj = env->ExceptionOccurred(); 2127 if (throwable_obj != NULL) { 2128 env->ExceptionClear(); 2129 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 2130 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 2131 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 2132 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 2133 method_array[i].name, method_array[i].signature); 2134 } 2135 } else { 2136 // Registration failed unexpectedly. 2137 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 2138 method_array[i].name, method_array[i].signature); 2139 env->UnregisterNatives(wbclass); 2140 break; 2141 } 2142 } 2143 } 2144 } 2145 2146 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 2147 // can't be in VM when we call JNI 2148 ThreadToNativeFromVM ttnfv(thread); 2149 const char* dir = env->GetStringUTFChars(compDirect, NULL); 2150 CHECK_JNI_EXCEPTION_(env, 0); 2151 int ret; 2152 { 2153 ThreadInVMfromNative ttvfn(thread); // back to VM 2154 ret = DirectivesParser::parse_string(dir, tty); 2155 } 2156 env->ReleaseStringUTFChars(compDirect, dir); 2157 // -1 for error parsing directive. Return 0 as number of directives added. 2158 if (ret == -1) { 2159 ret = 0; 2160 } 2161 return (jint) ret; 2162 WB_END 2163 2164 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 2165 DirectivesStack::pop(count); 2166 WB_END 2167 2168 // Checks that the library libfile has the noexecstack bit set. 2169 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 2170 jboolean ret = false; 2171 #ifdef LINUX 2172 // Can't be in VM when we call JNI. 2173 ThreadToNativeFromVM ttnfv(thread); 2174 const char* lf = env->GetStringUTFChars(libfile, NULL); 2175 CHECK_JNI_EXCEPTION_(env, 0); 2176 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 2177 env->ReleaseStringUTFChars(libfile, lf); 2178 #endif 2179 return ret; 2180 WB_END 2181 2182 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 2183 LINUX_ONLY(return OSContainer::is_containerized();) 2184 return false; 2185 WB_END 2186 2187 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env, 2188 jobject o, 2189 jstring proc_cgroups, 2190 jstring proc_self_cgroup, 2191 jstring proc_self_mountinfo)) 2192 jint ret = 0; 2193 #ifdef LINUX 2194 ThreadToNativeFromVM ttnfv(thread); 2195 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, NULL); 2196 CHECK_JNI_EXCEPTION_(env, 0); 2197 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, NULL); 2198 CHECK_JNI_EXCEPTION_(env, 0); 2199 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, NULL); 2200 CHECK_JNI_EXCEPTION_(env, 0); 2201 u1 cg_type_flags = 0; 2202 // This sets cg_type_flags 2203 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags); 2204 ret = (jint)cg_type_flags; 2205 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups); 2206 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup); 2207 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo); 2208 #endif 2209 return ret; 2210 WB_END 2211 2212 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 2213 os::print_os_info(tty); 2214 WB_END 2215 2216 // Elf decoder 2217 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 2218 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 2219 ElfFile::_do_not_cache_elf_section = true; 2220 #endif 2221 WB_END 2222 2223 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o)) 2224 return (jlong) ResolvedMethodTable::items_count(); 2225 WB_END 2226 2227 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o)) 2228 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count(); 2229 WB_END 2230 2231 WB_ENTRY(jint, WB_AotLibrariesCount(JNIEnv* env, jobject o)) 2232 jint result = 0; 2233 #if INCLUDE_AOT 2234 result = (jint) AOTLoader::heaps_count(); 2235 #endif 2236 return result; 2237 WB_END 2238 2239 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror)) 2240 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror)); 2241 // Return size in bytes. 2242 return k->size() * wordSize; 2243 WB_END 2244 2245 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java. 2246 // It explains how the thread's priority field is used for test state coordination. 2247 // 2248 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle)) 2249 oop target_oop = JNIHandles::resolve_non_null(target_handle); 2250 jlong tid = java_lang_Thread::thread_id(target_oop); 2251 JavaThread* target = java_lang_Thread::thread(target_oop); 2252 2253 // Grab a ThreadsListHandle to protect the target thread whilst terminating 2254 ThreadsListHandle tlh; 2255 2256 // Look up the target thread by tid to ensure it is present 2257 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid); 2258 if (t == NULL) { 2259 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!"); 2260 } 2261 2262 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected"); 2263 // Allow target to terminate by boosting priority 2264 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1)); 2265 2266 // Now wait for the target to terminate 2267 while (!target->is_terminated()) { 2268 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint 2269 os::naked_short_sleep(0); 2270 } 2271 2272 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated"); 2273 2274 // Now release the GC inducing thread - we have to re-resolve the external oop that 2275 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now. 2276 oop original = JNIHandles::resolve_non_null(target_handle); 2277 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2)); 2278 2279 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:"); 2280 2281 // The Java code should be creating garbage and triggering GC, which would potentially move 2282 // the threadObj oop. If the exiting thread is properly protected then its threadObj should 2283 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to 2284 // kick in. 2285 for (int i = 0; i < 5; i++) { 2286 oop original = JNIHandles::resolve_non_null(target_handle); 2287 oop current = t->threadObj(); 2288 if (original != current) { 2289 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i); 2290 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!"); 2291 } else { 2292 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i); 2293 ThreadBlockInVM tbivm(thread); 2294 os::naked_short_sleep(50); 2295 } 2296 } 2297 WB_END 2298 2299 #define CC (char*) 2300 2301 static JNINativeMethod methods[] = { 2302 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 2303 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 2304 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 2305 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 2306 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 2307 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 2308 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 2309 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 2310 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 2311 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses }, 2312 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount }, 2313 {CC"parseCommandLine0", 2314 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 2315 (void*) &WB_ParseCommandLine 2316 }, 2317 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2318 (void*)&WB_AddToBootstrapClassLoaderSearch}, 2319 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2320 (void*)&WB_AddToSystemClassLoaderSearch}, 2321 {CC"getCompressedOopsMaxHeapSize", CC"()J", 2322 (void*)&WB_GetCompressedOopsMaxHeapSize}, 2323 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 2324 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 2325 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 2326 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 2327 #if INCLUDE_CDS 2328 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName}, 2329 #endif 2330 #if INCLUDE_G1GC 2331 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 2332 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 2333 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 2334 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 2335 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 2336 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 2337 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 2338 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 2339 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 2340 (void*)&WB_G1AuxiliaryMemoryUsage }, 2341 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount }, 2342 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds }, 2343 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 2344 #endif // INCLUDE_G1GC 2345 #if INCLUDE_G1GC || INCLUDE_PARALLELGC 2346 {CC"dramReservedStart", CC"()J", (void*)&WB_DramReservedStart }, 2347 {CC"dramReservedEnd", CC"()J", (void*)&WB_DramReservedEnd }, 2348 {CC"nvdimmReservedStart", CC"()J", (void*)&WB_NvdimmReservedStart }, 2349 {CC"nvdimmReservedEnd", CC"()J", (void*)&WB_NvdimmReservedEnd }, 2350 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC 2351 #if INCLUDE_PARALLELGC 2352 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 2353 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 2354 #endif 2355 #if INCLUDE_NMT 2356 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 2357 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 2358 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType}, 2359 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 2360 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 2361 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 2362 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 2363 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 2364 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 2365 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 2366 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 2367 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena }, 2368 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena }, 2369 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc }, 2370 #endif // INCLUDE_NMT 2371 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 2372 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 2373 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 2374 (void*)&WB_DeoptimizeMethod }, 2375 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 2376 (void*)&WB_IsMethodCompiled }, 2377 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 2378 (void*)&WB_IsMethodCompilable}, 2379 {CC"isMethodQueuedForCompilation0", 2380 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 2381 {CC"isIntrinsicAvailable0", 2382 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2383 (void*)&WB_IsIntrinsicAvailable}, 2384 {CC"makeMethodNotCompilable0", 2385 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2386 {CC"testSetDontInlineMethod0", 2387 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2388 {CC"getMethodCompilationLevel0", 2389 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2390 {CC"getMethodEntryBci0", 2391 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2392 {CC"getCompileQueueSize", 2393 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2394 {CC"testSetForceInlineMethod0", 2395 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2396 {CC"enqueueMethodForCompilation0", 2397 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2398 {CC"enqueueInitializerForCompilation0", 2399 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2400 {CC"markMethodProfiled", 2401 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled}, 2402 {CC"clearMethodState0", 2403 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2404 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2405 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2406 {CC"matchesMethod", 2407 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2408 (void*)&WB_MatchesMethod}, 2409 {CC"matchesInline", 2410 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2411 (void*)&WB_MatchesInline}, 2412 {CC"shouldPrintAssembly", 2413 CC"(Ljava/lang/reflect/Executable;I)Z", 2414 (void*)&WB_ShouldPrintAssembly}, 2415 2416 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2417 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2418 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2419 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2420 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2421 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2422 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2423 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2424 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2425 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2426 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2427 (void*)&WB_SetStringVMFlag}, 2428 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2429 (void*)&WB_GetBooleanVMFlag}, 2430 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2431 (void*)&WB_GetIntVMFlag}, 2432 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2433 (void*)&WB_GetUintVMFlag}, 2434 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2435 (void*)&WB_GetIntxVMFlag}, 2436 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2437 (void*)&WB_GetUintxVMFlag}, 2438 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2439 (void*)&WB_GetUint64VMFlag}, 2440 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2441 (void*)&WB_GetSizeTVMFlag}, 2442 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2443 (void*)&WB_GetDoubleVMFlag}, 2444 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2445 (void*)&WB_GetStringVMFlag}, 2446 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2447 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2448 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2449 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2450 {CC"allocateMetaspace", 2451 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2452 {CC"freeMetaspace", 2453 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 2454 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2455 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2456 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment }, 2457 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2458 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2459 (void*)&WB_GetNMethod }, 2460 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 2461 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2462 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2463 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2464 {CC"getCompilationActivityMode", 2465 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2466 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2467 (void*)&WB_GetMethodData }, 2468 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2469 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2470 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2471 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2472 (void*)&WB_DefineModule }, 2473 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2474 (void*)&WB_AddModuleExports }, 2475 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2476 (void*)&WB_AddReadsModule }, 2477 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2478 (void*)&WB_AddModuleExportsToAllUnnamed }, 2479 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2480 (void*)&WB_AddModuleExportsToAll }, 2481 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls }, 2482 {CC"assertSpecialLock", CC"(ZZ)V", (void*)&WB_AssertSpecialLock }, 2483 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2484 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2485 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2486 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 2487 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 2488 {CC"remapInstructionOperandFromCPCache0", 2489 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 2490 {CC"encodeConstantPoolIndyIndex0", 2491 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 2492 {CC"getMethodBooleanOption", 2493 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2494 (void*)&WB_GetMethodBooleaneOption}, 2495 {CC"getMethodIntxOption", 2496 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2497 (void*)&WB_GetMethodIntxOption}, 2498 {CC"getMethodUintxOption", 2499 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2500 (void*)&WB_GetMethodUintxOption}, 2501 {CC"getMethodDoubleOption", 2502 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2503 (void*)&WB_GetMethodDoubleOption}, 2504 {CC"getMethodStringOption", 2505 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2506 (void*)&WB_GetMethodStringOption}, 2507 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;", 2508 (void*)&WB_GetDefaultArchivePath}, 2509 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled}, 2510 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 2511 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2512 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored }, 2513 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 2514 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass}, 2515 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2516 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild }, 2517 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild }, 2518 {CC"isC2OrJVMCIIncludedInVmBuild", CC"()Z", (void*)&WB_isC2OrJVMCIIncludedInVmBuild }, 2519 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported }, 2520 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed }, 2521 2522 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2523 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2524 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread }, 2525 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2526 (void*)&WB_AddCompilerDirective }, 2527 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2528 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported}, 2529 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected}, 2530 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically}, 2531 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints}, 2532 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl}, 2533 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl}, 2534 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle}, 2535 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z", 2536 (void*)&WB_ConcurrentGCRunTo}, 2537 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2538 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2539 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2540 {CC"validateCgroup", 2541 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I", 2542 (void*)&WB_ValidateCgroup }, 2543 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2544 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 2545 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount }, 2546 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount }, 2547 {CC"aotLibrariesCount", CC"()I", (void*)&WB_AotLibrariesCount }, 2548 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize}, 2549 }; 2550 2551 2552 #undef CC 2553 2554 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2555 { 2556 if (WhiteBoxAPI) { 2557 // Make sure that wbclass is loaded by the null classloader 2558 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass()); 2559 Handle loader(THREAD, ik->class_loader()); 2560 if (loader.is_null()) { 2561 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2562 WhiteBox::set_used(); 2563 } 2564 } 2565 } 2566 JVM_END