1 /* 2 * Copyright (c) 2012, 2019, 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/modules.hpp" 31 #include "classfile/protectionDomainCache.hpp" 32 #include "classfile/stringTable.hpp" 33 #include "classfile/symbolTable.hpp" 34 #include "code/codeCache.hpp" 35 #include "compiler/compilationPolicy.hpp" 36 #include "compiler/methodMatcher.hpp" 37 #include "compiler/directivesParser.hpp" 38 #include "gc/shared/gcConfig.hpp" 39 #include "gc/shared/genArguments.hpp" 40 #include "gc/shared/genCollectedHeap.hpp" 41 #include "jvmtifiles/jvmtiEnv.hpp" 42 #include "memory/filemap.hpp" 43 #include "memory/heapShared.inline.hpp" 44 #include "memory/metaspaceShared.hpp" 45 #include "memory/metadataFactory.hpp" 46 #include "memory/iterator.hpp" 47 #include "memory/resourceArea.hpp" 48 #include "memory/universe.hpp" 49 #include "memory/oopFactory.hpp" 50 #include "oops/array.hpp" 51 #include "oops/compressedOops.hpp" 52 #include "oops/constantPool.inline.hpp" 53 #include "oops/method.inline.hpp" 54 #include "oops/objArrayKlass.hpp" 55 #include "oops/objArrayOop.inline.hpp" 56 #include "oops/oop.inline.hpp" 57 #include "oops/typeArrayOop.inline.hpp" 58 #include "prims/resolvedMethodTable.hpp" 59 #include "prims/wbtestmethods/parserTests.hpp" 60 #include "prims/whitebox.inline.hpp" 61 #include "runtime/arguments.hpp" 62 #include "runtime/deoptimization.hpp" 63 #include "runtime/fieldDescriptor.inline.hpp" 64 #include "runtime/flags/jvmFlag.hpp" 65 #include "runtime/frame.inline.hpp" 66 #include "runtime/handles.inline.hpp" 67 #include "runtime/handshake.hpp" 68 #include "runtime/interfaceSupport.inline.hpp" 69 #include "runtime/javaCalls.hpp" 70 #include "runtime/jniHandles.inline.hpp" 71 #include "runtime/os.hpp" 72 #include "runtime/sweeper.hpp" 73 #include "runtime/synchronizer.hpp" 74 #include "runtime/thread.hpp" 75 #include "runtime/threadSMR.hpp" 76 #include "runtime/vm_version.hpp" 77 #include "services/memoryService.hpp" 78 #include "utilities/align.hpp" 79 #include "utilities/debug.hpp" 80 #include "utilities/elfFile.hpp" 81 #include "utilities/exceptions.hpp" 82 #include "utilities/macros.hpp" 83 #if INCLUDE_CDS 84 #include "prims/cdsoffsets.hpp" 85 #endif // INCLUDE_CDS 86 #if INCLUDE_G1GC 87 #include "gc/g1/g1Arguments.hpp" 88 #include "gc/g1/g1CollectedHeap.inline.hpp" 89 #include "gc/g1/g1ConcurrentMark.hpp" 90 #include "gc/g1/g1ConcurrentMarkThread.hpp" 91 #include "gc/g1/heapRegionRemSet.hpp" 92 #include "gc/g1/heterogeneousHeapRegionManager.hpp" 93 #endif // INCLUDE_G1GC 94 #if INCLUDE_PARALLELGC 95 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 96 #include "gc/parallel/adjoiningGenerations.hpp" 97 #endif // INCLUDE_PARALLELGC 98 #if INCLUDE_NMT 99 #include "services/mallocSiteTable.hpp" 100 #include "services/memTracker.hpp" 101 #include "utilities/nativeCallStack.hpp" 102 #endif // INCLUDE_NMT 103 #if INCLUDE_AOT 104 #include "aot/aotLoader.hpp" 105 #endif // INCLUDE_AOT 106 107 #ifdef LINUX 108 #include "osContainer_linux.hpp" 109 #endif 110 111 #define SIZE_T_MAX_VALUE ((size_t) -1) 112 113 #define CHECK_JNI_EXCEPTION_(env, value) \ 114 do { \ 115 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 116 THREAD->clear_pending_jni_exception_check(); \ 117 if (HAS_PENDING_EXCEPTION) { \ 118 return(value); \ 119 } \ 120 } while (0) 121 122 #define CHECK_JNI_EXCEPTION(env) \ 123 do { \ 124 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 125 THREAD->clear_pending_jni_exception_check(); \ 126 if (HAS_PENDING_EXCEPTION) { \ 127 return; \ 128 } \ 129 } while (0) 130 131 bool WhiteBox::_used = false; 132 volatile bool WhiteBox::compilation_locked = false; 133 134 class VM_WhiteBoxOperation : public VM_Operation { 135 public: 136 VM_WhiteBoxOperation() { } 137 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 138 bool allow_nested_vm_operations() const { return true; } 139 }; 140 141 142 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 143 return (jlong)(void*)JNIHandles::resolve(obj); 144 WB_END 145 146 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 147 return heapOopSize; 148 WB_END 149 150 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 151 return os::vm_page_size(); 152 WB_END 153 154 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 155 return os::vm_allocation_granularity(); 156 WB_END 157 158 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 159 return os::large_page_size(); 160 WB_END 161 162 class WBIsKlassAliveClosure : public LockedClassesDo { 163 Symbol* _name; 164 bool _found; 165 public: 166 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} 167 168 void do_klass(Klass* k) { 169 if (_found) return; 170 Symbol* ksym = k->name(); 171 if (ksym->fast_compare(_name) == 0) { 172 _found = true; 173 } 174 } 175 176 bool found() const { 177 return _found; 178 } 179 }; 180 181 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) 182 oop h_name = JNIHandles::resolve(name); 183 if (h_name == NULL) return false; 184 Symbol* sym = java_lang_String::as_symbol(h_name); 185 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 186 187 WBIsKlassAliveClosure closure(sym); 188 ClassLoaderDataGraph::classes_do(&closure); 189 190 return closure.found(); 191 WB_END 192 193 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name)) 194 oop h_name = JNIHandles::resolve(name); 195 if (h_name == NULL) return false; 196 Symbol* sym = java_lang_String::as_symbol(h_name); 197 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 198 return (jint)sym->refcount(); 199 WB_END 200 201 202 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 203 #if INCLUDE_JVMTI 204 ResourceMark rm; 205 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 206 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 207 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 208 assert(err == JVMTI_ERROR_NONE, "must not fail"); 209 #endif 210 } 211 WB_END 212 213 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 214 #if INCLUDE_JVMTI 215 ResourceMark rm; 216 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 217 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 218 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 219 assert(err == JVMTI_ERROR_NONE, "must not fail"); 220 #endif 221 } 222 WB_END 223 224 225 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 226 return (jlong)Arguments::max_heap_for_compressed_oops(); 227 } 228 WB_END 229 230 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 231 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " " 232 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 233 MinHeapSize, 234 InitialHeapSize, 235 MaxHeapSize, 236 SpaceAlignment, 237 HeapAlignment); 238 } 239 WB_END 240 241 #ifndef PRODUCT 242 // Forward declaration 243 void TestReservedSpace_test(); 244 void TestReserveMemorySpecial_test(); 245 void TestVirtualSpace_test(); 246 #endif 247 248 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) 249 #ifndef PRODUCT 250 TestReservedSpace_test(); 251 TestReserveMemorySpecial_test(); 252 TestVirtualSpace_test(); 253 #endif 254 WB_END 255 256 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 257 size_t granularity = os::vm_allocation_granularity(); 258 ReservedHeapSpace rhs(100 * granularity, granularity, false); 259 VirtualSpace vs; 260 vs.initialize(rhs, 50 * granularity); 261 262 // Check if constraints are complied 263 if (!( UseCompressedOops && rhs.base() != NULL && 264 CompressedOops::base() != NULL && 265 CompressedOops::use_implicit_null_checks() )) { 266 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 267 "\tUseCompressedOops is %d\n" 268 "\trhs.base() is " PTR_FORMAT "\n" 269 "\tCompressedOops::base() is " PTR_FORMAT "\n" 270 "\tCompressedOops::use_implicit_null_checks() is %d", 271 UseCompressedOops, 272 p2i(rhs.base()), 273 p2i(CompressedOops::base()), 274 CompressedOops::use_implicit_null_checks()); 275 return; 276 } 277 tty->print_cr("Reading from no access area... "); 278 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 279 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 280 WB_END 281 282 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 283 size_t magnitude, size_t iterations) { 284 size_t granularity = os::vm_allocation_granularity(); 285 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false); 286 VirtualSpace vs; 287 if (!vs.initialize(rhs, 0)) { 288 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 289 return 3; 290 } 291 292 int seed = os::random(); 293 tty->print_cr("Random seed is %d", seed); 294 os::init_random(seed); 295 296 for (size_t i = 0; i < iterations; i++) { 297 298 // Whether we will shrink or grow 299 bool shrink = os::random() % 2L == 0; 300 301 // Get random delta to resize virtual space 302 size_t delta = (size_t)os::random() % magnitude; 303 304 // If we are about to shrink virtual space below zero, then expand instead 305 if (shrink && vs.committed_size() < delta) { 306 shrink = false; 307 } 308 309 // Resizing by delta 310 if (shrink) { 311 vs.shrink_by(delta); 312 } else { 313 // If expanding fails expand_by will silently return false 314 vs.expand_by(delta, true); 315 } 316 } 317 return 0; 318 } 319 320 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 321 jlong reserved_space_size, jlong magnitude, jlong iterations)) 322 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 323 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 324 iterations); 325 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 326 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 327 return 1; 328 } 329 330 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 331 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 332 if (sizeof(size_t) < sizeof(jlong)) { 333 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; 334 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 335 || iterations > size_t_max_value) { 336 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 337 return 2; 338 } 339 } 340 341 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 342 (size_t) magnitude, (size_t) iterations); 343 WB_END 344 345 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name)) 346 return GCConfig::is_gc_supported((CollectedHeap::Name)name); 347 WB_END 348 349 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name)) 350 return GCConfig::is_gc_selected((CollectedHeap::Name)name); 351 WB_END 352 353 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o)) 354 return GCConfig::is_gc_selected_ergonomically(); 355 WB_END 356 357 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 358 oop p = JNIHandles::resolve(obj); 359 #if INCLUDE_G1GC 360 if (UseG1GC) { 361 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 362 const HeapRegion* hr = g1h->heap_region_containing(p); 363 if (hr == NULL) { 364 return false; 365 } 366 return !(hr->is_young()); 367 } 368 #endif 369 #if INCLUDE_PARALLELGC 370 if (UseParallelGC) { 371 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 372 return !psh->is_in_young(p); 373 } 374 #endif 375 #if INCLUDE_ZGC 376 if (UseZGC) { 377 return Universe::heap()->is_in(p); 378 } 379 #endif 380 GenCollectedHeap* gch = GenCollectedHeap::heap(); 381 return !gch->is_in_young(p); 382 WB_END 383 384 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 385 oop p = JNIHandles::resolve(obj); 386 return Universe::heap()->obj_size(p) * HeapWordSize; 387 WB_END 388 389 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 390 return (jlong)SpaceAlignment; 391 WB_END 392 393 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 394 return (jlong)HeapAlignment; 395 WB_END 396 397 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o)) 398 return Universe::heap()->supports_concurrent_phase_control(); 399 WB_END 400 401 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name)) 402 Handle h_name(THREAD, JNIHandles::resolve(name)); 403 ResourceMark rm; 404 const char* c_name = java_lang_String::as_utf8_string(h_name()); 405 return Universe::heap()->request_concurrent_phase(c_name); 406 WB_END 407 408 #if INCLUDE_G1GC 409 410 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 411 if (UseG1GC) { 412 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 413 oop result = JNIHandles::resolve(obj); 414 const HeapRegion* hr = g1h->heap_region_containing(result); 415 return hr->is_humongous(); 416 } 417 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 418 WB_END 419 420 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 421 if (UseG1GC) { 422 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 423 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 424 return hr->is_humongous(); 425 } 426 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 427 WB_END 428 429 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 430 if (UseG1GC) { 431 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 432 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 433 return hr->is_free(); 434 } 435 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 436 WB_END 437 438 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 439 if (UseG1GC) { 440 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 441 size_t nr = g1h->max_regions(); 442 return (jlong)nr; 443 } 444 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 445 WB_END 446 447 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 448 if (UseG1GC) { 449 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 450 size_t nr = g1h->num_free_regions(); 451 return (jlong)nr; 452 } 453 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 454 WB_END 455 456 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 457 if (UseG1GC) { 458 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 459 return g1h->concurrent_mark()->cm_thread()->during_cycle(); 460 } 461 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 462 WB_END 463 464 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o)) 465 if (UseG1GC) { 466 if (AsyncDeflateIdleMonitors) { 467 // AsyncDeflateIdleMonitors needs to know when System.gc() or 468 // the equivalent is called so any special clean up can be done 469 // at a safepoint, e.g., TestHumongousClassLoader.java. 470 ObjectSynchronizer::set_is_special_deflation_requested(true); 471 } 472 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 473 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) { 474 g1h->collect(GCCause::_wb_conc_mark); 475 return true; 476 } 477 return false; 478 } 479 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled"); 480 WB_END 481 482 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 483 if (UseG1GC) { 484 return (jint)HeapRegion::GrainBytes; 485 } 486 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 487 WB_END 488 489 #endif // INCLUDE_G1GC 490 491 #if INCLUDE_G1GC || INCLUDE_PARALLELGC 492 WB_ENTRY(jlong, WB_DramReservedStart(JNIEnv* env, jobject o)) 493 #if INCLUDE_G1GC 494 if (UseG1GC) { 495 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 496 if (g1h->is_heterogeneous_heap()) { 497 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_dram(); 498 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes); 499 } else { 500 return (jlong)g1h->base(); 501 } 502 } 503 #endif // INCLUDE_G1GC 504 #if INCLUDE_PARALLELGC 505 if (UseParallelGC) { 506 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 507 if (AllocateOldGenAt != NULL) { 508 MemRegion reserved = ps_heap->young_gen()->reserved(); 509 return (jlong)reserved.start(); 510 } else { 511 return (jlong)ps_heap->base(); 512 } 513 } 514 #endif // INCLUDE_PARALLELGC 515 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedStart: enabled only for G1 and Parallel GC"); 516 WB_END 517 518 WB_ENTRY(jlong, WB_DramReservedEnd(JNIEnv* env, jobject o)) 519 #if INCLUDE_G1GC 520 if (UseG1GC) { 521 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 522 if (g1h->is_heterogeneous_heap()) { 523 uint end_region = HeterogeneousHeapRegionManager::manager()->end_index_of_dram(); 524 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1); 525 } else { 526 return (jlong)g1h->base() + G1Arguments::heap_max_size_bytes(); 527 } 528 } 529 #endif // INCLUDE_G1GC 530 #if INCLUDE_PARALLELGC 531 if (UseParallelGC) { 532 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 533 if (AllocateOldGenAt != NULL) { 534 MemRegion reserved = ps_heap->young_gen()->reserved(); 535 return (jlong)reserved.end(); 536 } else { 537 return (jlong)ps_heap->reserved_region().end(); 538 } 539 } 540 #endif // INCLUDE_PARALLELGC 541 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedEnd: enabled only for G1 and Parallel GC"); 542 WB_END 543 544 WB_ENTRY(jlong, WB_NvdimmReservedStart(JNIEnv* env, jobject o)) 545 #if INCLUDE_G1GC 546 if (UseG1GC) { 547 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 548 if (g1h->is_heterogeneous_heap()) { 549 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm(); 550 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes); 551 } else { 552 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 553 } 554 } 555 #endif // INCLUDE_G1GC 556 #if INCLUDE_PARALLELGC 557 if (UseParallelGC) { 558 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 559 if (AllocateOldGenAt != NULL) { 560 MemRegion reserved = ps_heap->old_gen()->reserved(); 561 return (jlong)reserved.start(); 562 } else { 563 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 564 } 565 } 566 #endif // INCLUDE_PARALLELGC 567 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: enabled only for G1 and Parallel GC"); 568 WB_END 569 570 WB_ENTRY(jlong, WB_NvdimmReservedEnd(JNIEnv* env, jobject o)) 571 #if INCLUDE_G1GC 572 if (UseG1GC) { 573 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 574 if (g1h->is_heterogeneous_heap()) { 575 uint end_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm(); 576 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1); 577 } else { 578 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 579 } 580 } 581 #endif // INCLUDE_G1GC 582 #if INCLUDE_PARALLELGC 583 if (UseParallelGC) { 584 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 585 if (AllocateOldGenAt != NULL) { 586 MemRegion reserved = ps_heap->old_gen()->reserved(); 587 return (jlong)reserved.end(); 588 } else { 589 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 590 } 591 } 592 #endif // INCLUDE_PARALLELGC 593 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: enabled only for G1 and Parallel GC"); 594 WB_END 595 596 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC 597 598 #if INCLUDE_PARALLELGC 599 600 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 601 if (UseParallelGC) { 602 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment(); 603 } 604 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 605 WB_END 606 607 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 608 if (UseParallelGC) { 609 return GenAlignment; 610 } 611 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 612 WB_END 613 614 #endif // INCLUDE_PARALLELGC 615 616 #if INCLUDE_G1GC 617 618 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 619 if (UseG1GC) { 620 ResourceMark rm(THREAD); 621 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 622 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 623 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 624 return JNIHandles::make_local(env, h()); 625 } 626 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 627 WB_END 628 629 class OldRegionsLivenessClosure: public HeapRegionClosure { 630 631 private: 632 const int _liveness; 633 size_t _total_count; 634 size_t _total_memory; 635 size_t _total_memory_to_free; 636 637 public: 638 OldRegionsLivenessClosure(int liveness) : 639 _liveness(liveness), 640 _total_count(0), 641 _total_memory(0), 642 _total_memory_to_free(0) { } 643 644 size_t total_count() { return _total_count; } 645 size_t total_memory() { return _total_memory; } 646 size_t total_memory_to_free() { return _total_memory_to_free; } 647 648 bool do_heap_region(HeapRegion* r) { 649 if (r->is_old()) { 650 size_t prev_live = r->marked_bytes(); 651 size_t live = r->live_bytes(); 652 size_t size = r->used(); 653 size_t reg_size = HeapRegion::GrainBytes; 654 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 655 _total_memory += size; 656 ++_total_count; 657 if (size == reg_size) { 658 // we don't include non-full regions since they are unlikely included in mixed gc 659 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 660 _total_memory_to_free += size - prev_live; 661 } 662 } 663 } 664 return false; 665 } 666 }; 667 668 669 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 670 if (!UseG1GC) { 671 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 672 } 673 if (liveness < 0) { 674 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 675 } 676 677 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 678 OldRegionsLivenessClosure rli(liveness); 679 g1h->heap_region_iterate(&rli); 680 681 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 682 result->long_at_put(0, rli.total_count()); 683 result->long_at_put(1, rli.total_memory()); 684 result->long_at_put(2, rli.total_memory_to_free()); 685 return (jlongArray) JNIHandles::make_local(env, result); 686 WB_END 687 688 #endif // INCLUDE_G1GC 689 690 #if INCLUDE_NMT 691 // Alloc memory using the test memory type so that we can use that to see if 692 // NMT picks it up correctly 693 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 694 jlong addr = 0; 695 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 696 return addr; 697 WB_END 698 699 // Alloc memory with pseudo call stack. The test can create psudo malloc 700 // allocation site to stress the malloc tracking. 701 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 702 address pc = (address)(size_t)pseudo_stack; 703 NativeCallStack stack(&pc, 1); 704 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 705 WB_END 706 707 // Alloc memory with pseudo call stack and specific memory type. 708 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type)) 709 address pc = (address)(size_t)pseudo_stack; 710 NativeCallStack stack(&pc, 1); 711 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack); 712 WB_END 713 714 // Free the memory allocated by NMTAllocTest 715 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 716 os::free((void*)(uintptr_t)mem); 717 WB_END 718 719 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 720 jlong addr = 0; 721 722 addr = (jlong)(uintptr_t)os::reserve_memory(size); 723 MemTracker::record_virtual_memory_type((address)addr, mtTest); 724 725 return addr; 726 WB_END 727 728 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size)) 729 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr); 730 MemTracker::record_virtual_memory_type((address)addr, mtTest); 731 732 return addr; 733 WB_END 734 735 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 736 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 737 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 738 WB_END 739 740 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 741 os::uncommit_memory((char *)(uintptr_t)addr, size); 742 WB_END 743 744 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 745 os::release_memory((char *)(uintptr_t)addr, size); 746 WB_END 747 748 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env)) 749 // Test that we can downgrade NMT levels but not upgrade them. 750 if (MemTracker::tracking_level() == NMT_off) { 751 MemTracker::transition_to(NMT_off); 752 return MemTracker::tracking_level() == NMT_off; 753 } else { 754 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking"); 755 MemTracker::transition_to(NMT_summary); 756 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now"); 757 758 // Can't go to detail once NMT is set to summary. 759 MemTracker::transition_to(NMT_detail); 760 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now"); 761 762 // Shutdown sets tracking level to minimal. 763 MemTracker::shutdown(); 764 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); 765 766 // Once the tracking level is minimal, we cannot increase to summary. 767 // The code ignores this request instead of asserting because if the malloc site 768 // table overflows in another thread, it tries to change the code to summary. 769 MemTracker::transition_to(NMT_summary); 770 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 771 772 // Really can never go up to detail, verify that the code would never do this. 773 MemTracker::transition_to(NMT_detail); 774 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 775 return MemTracker::tracking_level() == NMT_minimal; 776 } 777 WB_END 778 779 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 780 int hash_size = MallocSiteTable::hash_buckets(); 781 assert(hash_size > 0, "NMT hash_size should be > 0"); 782 return (jint)hash_size; 783 WB_END 784 #endif // INCLUDE_NMT 785 786 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 787 assert(method != NULL, "method should not be null"); 788 ThreadToNativeFromVM ttn(thread); 789 return env->FromReflectedMethod(method); 790 } 791 792 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 793 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 794 private: 795 int _result; 796 const bool _make_not_entrant; 797 public: 798 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 799 _result(0), _make_not_entrant(make_not_entrant) { } 800 int result() const { return _result; } 801 802 void doit() { 803 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 804 if (t->has_last_Java_frame()) { 805 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) { 806 frame* f = fst.current(); 807 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 808 RegisterMap* reg_map = fst.register_map(); 809 Deoptimization::deoptimize(t, *f, reg_map); 810 if (_make_not_entrant) { 811 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 812 assert(cm != NULL, "sanity check"); 813 cm->make_not_entrant(); 814 } 815 ++_result; 816 } 817 } 818 } 819 } 820 } 821 }; 822 823 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 824 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 825 VMThread::execute(&op); 826 return op.result(); 827 WB_END 828 829 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 830 CodeCache::mark_all_nmethods_for_deoptimization(); 831 Deoptimization::deoptimize_all_marked(); 832 WB_END 833 834 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 835 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 836 int result = 0; 837 CHECK_JNI_EXCEPTION_(env, result); 838 MutexLocker mu(Compile_lock); 839 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 840 if (is_osr) { 841 result += mh->mark_osr_nmethods(); 842 } else if (mh->code() != NULL) { 843 mh->code()->mark_for_deoptimization(); 844 ++result; 845 } 846 result += CodeCache::mark_for_deoptimization(mh()); 847 if (result > 0) { 848 Deoptimization::deoptimize_all_marked(); 849 } 850 return result; 851 WB_END 852 853 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 854 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 855 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 856 MutexLocker mu(Compile_lock); 857 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 858 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 859 if (code == NULL) { 860 return JNI_FALSE; 861 } 862 return (code->is_alive() && !code->is_marked_for_deoptimization()); 863 WB_END 864 865 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 866 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 867 return false; 868 } 869 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 870 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 871 MutexLocker mu(Compile_lock); 872 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 873 if (is_osr) { 874 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); 875 } else { 876 return CompilationPolicy::can_be_compiled(mh, comp_level); 877 } 878 WB_END 879 880 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 881 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 882 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 883 MutexLocker mu(Compile_lock); 884 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 885 return mh->queued_for_compilation(); 886 WB_END 887 888 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 889 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 890 return false; // Intrinsic is not available on a non-existent compilation level. 891 } 892 jmethodID method_id, compilation_context_id; 893 method_id = reflected_method_to_jmid(thread, env, method); 894 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 895 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 896 897 DirectiveSet* directive; 898 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 899 assert(comp != NULL, "compiler not available"); 900 if (compilation_context != NULL) { 901 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 902 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 903 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 904 directive = DirectivesStack::getMatchingDirective(cch, comp); 905 } else { 906 // Calling with NULL matches default directive 907 directive = DirectivesStack::getDefaultDirective(comp); 908 } 909 bool result = comp->is_intrinsic_available(mh, directive); 910 DirectivesStack::release(directive); 911 return result; 912 WB_END 913 914 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 915 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 916 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 917 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 918 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 919 return (code != NULL ? code->comp_level() : CompLevel_none); 920 WB_END 921 922 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 923 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 924 CHECK_JNI_EXCEPTION(env); 925 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 926 if (is_osr) { 927 mh->set_not_osr_compilable("WhiteBox", comp_level); 928 } else { 929 mh->set_not_compilable("WhiteBox", comp_level); 930 } 931 WB_END 932 933 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 934 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 935 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 936 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 937 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 938 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 939 WB_END 940 941 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 942 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 943 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 944 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 945 bool result = mh->dont_inline(); 946 mh->set_dont_inline(value == JNI_TRUE); 947 return result; 948 WB_END 949 950 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 951 if (comp_level == CompLevel_any) { 952 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 953 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 954 } else { 955 return CompileBroker::queue_size(comp_level); 956 } 957 WB_END 958 959 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 960 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 961 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 962 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 963 bool result = mh->force_inline(); 964 mh->set_force_inline(value == JNI_TRUE); 965 return result; 966 WB_END 967 968 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) { 969 // Screen for unavailable/bad comp level or null method 970 AbstractCompiler* comp = CompileBroker::compiler(comp_level); 971 if (method == NULL) { 972 tty->print_cr("WB error: request to compile NULL method"); 973 return false; 974 } 975 if (comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 976 tty->print_cr("WB error: invalid compilation level %d", comp_level); 977 return false; 978 } 979 if (comp == NULL) { 980 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level); 981 return false; 982 } 983 984 // Check if compilation is blocking 985 methodHandle mh(THREAD, method); 986 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 987 bool is_blocking = !directive->BackgroundCompilationOption; 988 DirectivesStack::release(directive); 989 990 // Compile method and check result 991 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD); 992 MutexLocker mu(Compile_lock); 993 bool is_queued = mh->queued_for_compilation(); 994 if ((!is_blocking && is_queued) || nm != NULL) { 995 return true; 996 } 997 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level); 998 mh->print_short_name(tty); 999 tty->cr(); 1000 if (is_blocking && is_queued) { 1001 tty->print_cr("WB error: blocking compilation is still in queue!"); 1002 } 1003 return false; 1004 } 1005 1006 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 1007 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1008 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1009 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 1010 WB_END 1011 1012 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 1013 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1014 Method* clinit = ik->class_initializer(); 1015 if (clinit == NULL) { 1016 return false; 1017 } 1018 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD); 1019 WB_END 1020 1021 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 1022 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1023 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1024 1025 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1026 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 1027 bool result = directive->PrintAssemblyOption; 1028 DirectivesStack::release(directive); 1029 1030 return result; 1031 WB_END 1032 1033 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1034 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1035 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1036 1037 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1038 1039 ResourceMark rm; 1040 const char* error_msg = NULL; 1041 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1042 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 1043 1044 if (m == NULL) { 1045 assert(error_msg != NULL, "Always have an error message"); 1046 tty->print_cr("Got error: %s", error_msg); 1047 return -1; // Pattern failed 1048 } 1049 1050 // Pattern works - now check if it matches 1051 int result; 1052 if (m->match(mh, InlineMatcher::force_inline)) { 1053 result = 2; // Force inline match 1054 } else if (m->match(mh, InlineMatcher::dont_inline)) { 1055 result = 1; // Dont inline match 1056 } else { 1057 result = 0; // No match 1058 } 1059 delete m; 1060 return result; 1061 WB_END 1062 1063 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1064 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1065 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1066 1067 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1068 1069 ResourceMark rm; 1070 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1071 1072 const char* error_msg = NULL; 1073 1074 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg); 1075 if (m == NULL) { 1076 assert(error_msg != NULL, "Must have error_msg"); 1077 tty->print_cr("Got error: %s", error_msg); 1078 return -1; 1079 } 1080 1081 // Pattern works - now check if it matches 1082 int result = m->matches(mh); 1083 delete m; 1084 assert(result == 0 || result == 1, "Result out of range"); 1085 return result; 1086 WB_END 1087 1088 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method)) 1089 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1090 CHECK_JNI_EXCEPTION(env); 1091 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1092 1093 MethodData* mdo = mh->method_data(); 1094 if (mdo == NULL) { 1095 Method::build_interpreter_method_data(mh, CHECK_AND_CLEAR); 1096 mdo = mh->method_data(); 1097 } 1098 mdo->init(); 1099 InvocationCounter* icnt = mdo->invocation_counter(); 1100 InvocationCounter* bcnt = mdo->backedge_counter(); 1101 // set i-counter according to TieredThresholdPolicy::is_method_profiled 1102 icnt->set(InvocationCounter::wait_for_compile, Tier4MinInvocationThreshold); 1103 bcnt->set(InvocationCounter::wait_for_compile, Tier4CompileThreshold); 1104 WB_END 1105 1106 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 1107 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1108 CHECK_JNI_EXCEPTION(env); 1109 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1110 MutexLocker mu(Compile_lock); 1111 MethodData* mdo = mh->method_data(); 1112 MethodCounters* mcs = mh->method_counters(); 1113 1114 if (mdo != NULL) { 1115 mdo->init(); 1116 ResourceMark rm; 1117 int arg_count = mdo->method()->size_of_parameters(); 1118 for (int i = 0; i < arg_count; i++) { 1119 mdo->set_arg_modified(i, 0); 1120 } 1121 MutexLocker mu(mdo->extra_data_lock()); 1122 mdo->clean_method_data(/*always_clean*/true); 1123 } 1124 1125 mh->clear_not_c1_compilable(); 1126 mh->clear_not_c2_compilable(); 1127 mh->clear_not_c2_osr_compilable(); 1128 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 1129 if (mcs != NULL) { 1130 mcs->backedge_counter()->init(); 1131 mcs->invocation_counter()->init(); 1132 mcs->set_interpreter_invocation_count(0); 1133 mcs->set_interpreter_throwout_count(0); 1134 1135 #ifdef TIERED 1136 mcs->set_rate(0.0F); 1137 mh->set_prev_event_count(0); 1138 mh->set_prev_time(0); 1139 #endif 1140 } 1141 WB_END 1142 1143 template <typename T> 1144 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const JVMFlag*, T*)) { 1145 if (name == NULL) { 1146 return false; 1147 } 1148 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1149 const char* flag_name = env->GetStringUTFChars(name, NULL); 1150 CHECK_JNI_EXCEPTION_(env, false); 1151 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name); 1152 JVMFlag::Error result = (*TAt)(flag, value); 1153 env->ReleaseStringUTFChars(name, flag_name); 1154 return (result == JVMFlag::SUCCESS); 1155 } 1156 1157 template <typename T> 1158 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(JVMFlag* flag, T*, JVMFlag::Flags)) { 1159 if (name == NULL) { 1160 return false; 1161 } 1162 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1163 const char* flag_name = env->GetStringUTFChars(name, NULL); 1164 CHECK_JNI_EXCEPTION_(env, false); 1165 JVMFlag* flag = JVMFlag::find_flag(flag_name); 1166 JVMFlag::Error result = (*TAtPut)(flag, value, JVMFlag::INTERNAL); 1167 env->ReleaseStringUTFChars(name, flag_name); 1168 return (result == JVMFlag::SUCCESS); 1169 } 1170 1171 template <typename T> 1172 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1173 ResourceMark rm(thread); 1174 jclass clazz = env->FindClass(name->as_C_string()); 1175 CHECK_JNI_EXCEPTION_(env, NULL); 1176 jmethodID methodID = env->GetStaticMethodID(clazz, 1177 vmSymbols::valueOf_name()->as_C_string(), 1178 sig->as_C_string()); 1179 CHECK_JNI_EXCEPTION_(env, NULL); 1180 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1181 CHECK_JNI_EXCEPTION_(env, NULL); 1182 return result; 1183 } 1184 1185 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1186 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1187 } 1188 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1189 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1190 } 1191 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1192 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1193 } 1194 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1195 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1196 }*/ 1197 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1198 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1199 } 1200 1201 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1202 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1203 const char* flag_name = env->GetStringUTFChars(name, NULL); 1204 CHECK_JNI_EXCEPTION_(env, NULL); 1205 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name); 1206 env->ReleaseStringUTFChars(name, flag_name); 1207 return result; 1208 } 1209 1210 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1211 const JVMFlag* flag = getVMFlag(thread, env, name); 1212 return (flag != NULL) && flag->is_constant_in_binary(); 1213 WB_END 1214 1215 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1216 const JVMFlag* flag = getVMFlag(thread, env, name); 1217 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 1218 WB_END 1219 1220 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1221 bool result; 1222 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) { 1223 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1224 return booleanBox(thread, env, result); 1225 } 1226 return NULL; 1227 WB_END 1228 1229 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1230 int result; 1231 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) { 1232 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1233 return longBox(thread, env, result); 1234 } 1235 return NULL; 1236 WB_END 1237 1238 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1239 uint result; 1240 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) { 1241 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1242 return longBox(thread, env, result); 1243 } 1244 return NULL; 1245 WB_END 1246 1247 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1248 intx result; 1249 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) { 1250 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1251 return longBox(thread, env, result); 1252 } 1253 return NULL; 1254 WB_END 1255 1256 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1257 uintx result; 1258 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) { 1259 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1260 return longBox(thread, env, result); 1261 } 1262 return NULL; 1263 WB_END 1264 1265 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1266 uint64_t result; 1267 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) { 1268 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1269 return longBox(thread, env, result); 1270 } 1271 return NULL; 1272 WB_END 1273 1274 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1275 size_t result; 1276 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) { 1277 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1278 return longBox(thread, env, result); 1279 } 1280 return NULL; 1281 WB_END 1282 1283 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1284 double result; 1285 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) { 1286 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1287 return doubleBox(thread, env, result); 1288 } 1289 return NULL; 1290 WB_END 1291 1292 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1293 ccstr ccstrResult; 1294 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) { 1295 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1296 jstring result = env->NewStringUTF(ccstrResult); 1297 CHECK_JNI_EXCEPTION_(env, NULL); 1298 return result; 1299 } 1300 return NULL; 1301 WB_END 1302 1303 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1304 bool result = value == JNI_TRUE ? true : false; 1305 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut); 1306 WB_END 1307 1308 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1309 int result = value; 1310 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut); 1311 WB_END 1312 1313 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1314 uint result = value; 1315 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut); 1316 WB_END 1317 1318 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1319 intx result = value; 1320 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut); 1321 WB_END 1322 1323 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1324 uintx result = value; 1325 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut); 1326 WB_END 1327 1328 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1329 uint64_t result = value; 1330 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut); 1331 WB_END 1332 1333 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1334 size_t result = value; 1335 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut); 1336 WB_END 1337 1338 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1339 double result = value; 1340 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut); 1341 WB_END 1342 1343 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1344 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1345 const char* ccstrValue; 1346 if (value == NULL) { 1347 ccstrValue = NULL; 1348 } 1349 else { 1350 ccstrValue = env->GetStringUTFChars(value, NULL); 1351 CHECK_JNI_EXCEPTION(env); 1352 } 1353 ccstr ccstrResult = ccstrValue; 1354 bool needFree; 1355 { 1356 ThreadInVMfromNative ttvfn(thread); // back to VM 1357 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut); 1358 } 1359 if (value != NULL) { 1360 env->ReleaseStringUTFChars(value, ccstrValue); 1361 } 1362 if (needFree) { 1363 FREE_C_HEAP_ARRAY(char, ccstrResult); 1364 } 1365 WB_END 1366 1367 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1368 WhiteBox::compilation_locked = true; 1369 WB_END 1370 1371 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1372 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1373 WhiteBox::compilation_locked = false; 1374 mo.notify_all(); 1375 WB_END 1376 1377 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 1378 // Force a code cache sweep and block until it finished 1379 NMethodSweeper::force_sweep(); 1380 WB_END 1381 1382 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1383 ResourceMark rm(THREAD); 1384 int len; 1385 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1386 return (StringTable::lookup(name, len) != NULL); 1387 WB_END 1388 1389 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1390 if (AsyncDeflateIdleMonitors) { 1391 // AsyncDeflateIdleMonitors needs to know when System.gc() or 1392 // the equivalent is called so any special clean up can be done 1393 // at a safepoint, e.g., TestHumongousClassLoader.java. 1394 ObjectSynchronizer::set_is_special_deflation_requested(true); 1395 } 1396 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1397 Universe::heap()->collect(GCCause::_wb_full_gc); 1398 #if INCLUDE_G1GC 1399 if (UseG1GC) { 1400 // Needs to be cleared explicitly for G1 1401 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1402 } 1403 #endif // INCLUDE_G1GC 1404 WB_END 1405 1406 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1407 Universe::heap()->collect(GCCause::_wb_young_gc); 1408 WB_END 1409 1410 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1411 // static+volatile in order to force the read to happen 1412 // (not be eliminated by the compiler) 1413 static char c; 1414 static volatile char* p; 1415 1416 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 1417 if (p == NULL) { 1418 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1419 } 1420 1421 c = *p; 1422 WB_END 1423 1424 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1425 const char* features = VM_Version::features_string(); 1426 ThreadToNativeFromVM ttn(thread); 1427 jstring features_string = env->NewStringUTF(features); 1428 1429 CHECK_JNI_EXCEPTION_(env, NULL); 1430 1431 return features_string; 1432 WB_END 1433 1434 int WhiteBox::get_blob_type(const CodeBlob* code) { 1435 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1436 if (code->is_aot()) { 1437 return -1; 1438 } 1439 return CodeCache::get_code_heap(code)->code_blob_type(); 1440 } 1441 1442 CodeHeap* WhiteBox::get_code_heap(int blob_type) { 1443 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1444 return CodeCache::get_code_heap(blob_type); 1445 } 1446 1447 struct CodeBlobStub { 1448 CodeBlobStub(const CodeBlob* blob) : 1449 name(os::strdup(blob->name())), 1450 size(blob->size()), 1451 blob_type(WhiteBox::get_blob_type(blob)), 1452 address((jlong) blob) { } 1453 ~CodeBlobStub() { os::free((void*) name); } 1454 const char* const name; 1455 const jint size; 1456 const jint blob_type; 1457 const jlong address; 1458 }; 1459 1460 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1461 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1462 CHECK_JNI_EXCEPTION_(env, NULL); 1463 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1464 1465 jstring name = env->NewStringUTF(cb->name); 1466 CHECK_JNI_EXCEPTION_(env, NULL); 1467 env->SetObjectArrayElement(result, 0, name); 1468 1469 jobject obj = integerBox(thread, env, cb->size); 1470 CHECK_JNI_EXCEPTION_(env, NULL); 1471 env->SetObjectArrayElement(result, 1, obj); 1472 1473 obj = integerBox(thread, env, cb->blob_type); 1474 CHECK_JNI_EXCEPTION_(env, NULL); 1475 env->SetObjectArrayElement(result, 2, obj); 1476 1477 obj = longBox(thread, env, cb->address); 1478 CHECK_JNI_EXCEPTION_(env, NULL); 1479 env->SetObjectArrayElement(result, 3, obj); 1480 1481 return result; 1482 } 1483 1484 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1485 ResourceMark rm(THREAD); 1486 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1487 CHECK_JNI_EXCEPTION_(env, NULL); 1488 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1489 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1490 jobjectArray result = NULL; 1491 if (code == NULL) { 1492 return result; 1493 } 1494 int comp_level = code->comp_level(); 1495 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size(); 1496 1497 ThreadToNativeFromVM ttn(thread); 1498 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1499 CHECK_JNI_EXCEPTION_(env, NULL); 1500 result = env->NewObjectArray(5, clazz, NULL); 1501 if (result == NULL) { 1502 return result; 1503 } 1504 1505 CodeBlobStub stub(code); 1506 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1507 CHECK_JNI_EXCEPTION_(env, NULL); 1508 env->SetObjectArrayElement(result, 0, codeBlob); 1509 1510 jobject level = integerBox(thread, env, comp_level); 1511 CHECK_JNI_EXCEPTION_(env, NULL); 1512 env->SetObjectArrayElement(result, 1, level); 1513 1514 jbyteArray insts = env->NewByteArray(insts_size); 1515 CHECK_JNI_EXCEPTION_(env, NULL); 1516 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1517 env->SetObjectArrayElement(result, 2, insts); 1518 1519 jobject id = integerBox(thread, env, code->compile_id()); 1520 CHECK_JNI_EXCEPTION_(env, NULL); 1521 env->SetObjectArrayElement(result, 3, id); 1522 1523 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1524 CHECK_JNI_EXCEPTION_(env, NULL); 1525 env->SetObjectArrayElement(result, 4, entry_point); 1526 1527 return result; 1528 WB_END 1529 1530 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1531 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1532 BufferBlob* blob; 1533 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1534 if (full_size < size) { 1535 full_size += align_up(size - full_size, oopSize); 1536 } 1537 { 1538 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1539 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1540 if (blob != NULL) { 1541 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1542 } 1543 } 1544 // Track memory usage statistic after releasing CodeCache_lock 1545 MemoryService::track_code_cache_memory_usage(); 1546 return blob; 1547 } 1548 1549 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1550 if (size < 0) { 1551 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1552 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1553 } 1554 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1555 WB_END 1556 1557 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1558 if (addr == 0) { 1559 return; 1560 } 1561 BufferBlob::free((BufferBlob*) addr); 1562 WB_END 1563 1564 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1565 ResourceMark rm; 1566 GrowableArray<CodeBlobStub*> blobs; 1567 { 1568 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1569 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1570 if (heap == NULL) { 1571 return NULL; 1572 } 1573 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1574 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1575 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1576 new (stub) CodeBlobStub(cb); 1577 blobs.append(stub); 1578 } 1579 } 1580 ThreadToNativeFromVM ttn(thread); 1581 jobjectArray result = NULL; 1582 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1583 CHECK_JNI_EXCEPTION_(env, NULL); 1584 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1585 CHECK_JNI_EXCEPTION_(env, NULL); 1586 if (result == NULL) { 1587 return result; 1588 } 1589 int i = 0; 1590 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1591 it != blobs.end(); ++it) { 1592 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1593 CHECK_JNI_EXCEPTION_(env, NULL); 1594 env->SetObjectArrayElement(result, i, obj); 1595 CHECK_JNI_EXCEPTION_(env, NULL); 1596 ++i; 1597 } 1598 return result; 1599 WB_END 1600 1601 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1602 return CompileBroker::get_compilation_activity_mode(); 1603 WB_END 1604 1605 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1606 if (addr == 0) { 1607 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1608 "WB_GetCodeBlob: addr is null"); 1609 } 1610 ThreadToNativeFromVM ttn(thread); 1611 CodeBlobStub stub((CodeBlob*) addr); 1612 return codeBlob2objectArray(thread, env, &stub); 1613 WB_END 1614 1615 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1616 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1617 CHECK_JNI_EXCEPTION_(env, 0); 1618 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1619 return (jlong) mh->method_data(); 1620 WB_END 1621 1622 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1623 return (jlong) Thread::current()->stack_size(); 1624 WB_END 1625 1626 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1627 JavaThread* t = JavaThread::current(); 1628 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size(); 1629 WB_END 1630 1631 1632 int WhiteBox::array_bytes_to_length(size_t bytes) { 1633 return Array<u1>::bytes_to_length(bytes); 1634 } 1635 1636 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1637 if (size < 0) { 1638 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1639 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1640 } 1641 1642 oop class_loader_oop = JNIHandles::resolve(class_loader); 1643 ClassLoaderData* cld = class_loader_oop != NULL 1644 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1645 : ClassLoaderData::the_null_class_loader_data(); 1646 1647 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1648 1649 return (jlong)(uintptr_t)metadata; 1650 WB_END 1651 1652 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 1653 oop class_loader_oop = JNIHandles::resolve(class_loader); 1654 ClassLoaderData* cld = class_loader_oop != NULL 1655 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1656 : ClassLoaderData::the_null_class_loader_data(); 1657 1658 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 1659 WB_END 1660 1661 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1662 jstring version, jstring location, jobjectArray packages)) 1663 ResourceMark rm(THREAD); 1664 1665 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages)); 1666 objArrayHandle packages_h(THREAD, packages_oop); 1667 int num_packages = (packages_h == NULL ? 0 : packages_h->length()); 1668 1669 char** pkgs = NULL; 1670 if (num_packages > 0) { 1671 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages); 1672 for (int x = 0; x < num_packages; x++) { 1673 oop pkg_str = packages_h->obj_at(x); 1674 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) { 1675 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 1676 err_msg("Bad package name")); 1677 } 1678 pkgs[x] = java_lang_String::as_utf8_string(pkg_str); 1679 } 1680 } 1681 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK); 1682 WB_END 1683 1684 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1685 ResourceMark rm(THREAD); 1686 char* package_name = NULL; 1687 if (package != NULL) { 1688 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1689 } 1690 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK); 1691 WB_END 1692 1693 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1694 ResourceMark rm(THREAD); 1695 char* package_name = NULL; 1696 if (package != NULL) { 1697 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1698 } 1699 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK); 1700 WB_END 1701 1702 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1703 ResourceMark rm(THREAD); 1704 char* package_name = NULL; 1705 if (package != NULL) { 1706 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1707 } 1708 Modules::add_module_exports(module, package_name, NULL, CHECK); 1709 WB_END 1710 1711 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1712 Modules::add_reads_module(from_module, source_module, CHECK); 1713 WB_END 1714 1715 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1716 if (inc < 0) { 1717 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1718 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1719 } 1720 1721 jlong max_size_t = (jlong) ((size_t) -1); 1722 if (inc > max_size_t) { 1723 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1724 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1725 } 1726 1727 size_t new_cap_until_GC = 0; 1728 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1729 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1730 if (!success) { 1731 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1732 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1733 "due to contention with another thread"); 1734 } 1735 return (jlong) new_cap_until_GC; 1736 WB_END 1737 1738 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1739 return (jlong) MetaspaceGC::capacity_until_GC(); 1740 WB_END 1741 1742 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb)) 1743 return MetaspaceGC::should_concurrent_collect(); 1744 WB_END 1745 1746 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb)) 1747 return (jlong)Metaspace::reserve_alignment(); 1748 WB_END 1749 1750 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue)) 1751 Mutex::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ? 1752 Mutex::_safepoint_check_always : 1753 Mutex::_safepoint_check_never; 1754 Mutex::SafepointCheckFlag sfpt_check_attempted = attemptedNoSafepointValue ? 1755 Mutex::_no_safepoint_check_flag : 1756 Mutex::_safepoint_check_flag; 1757 MutexLocker ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required), 1758 sfpt_check_attempted); 1759 WB_END 1760 1761 WB_ENTRY(void, WB_AssertSpecialLock(JNIEnv* env, jobject o, jboolean allowVMBlock, jboolean safepointCheck)) 1762 // Create a special lock violating condition in value 1763 Mutex::SafepointCheckRequired sfpt_check_required = safepointCheck ? 1764 Mutex::_safepoint_check_always : 1765 Mutex::_safepoint_check_never; 1766 Mutex::SafepointCheckFlag safepoint_check = safepointCheck ? 1767 Monitor::_safepoint_check_flag : 1768 Monitor::_no_safepoint_check_flag; 1769 1770 MutexLocker ml(new Mutex(Mutex::special, "SpecialTest_lock", allowVMBlock, sfpt_check_required), safepoint_check); 1771 // If the lock above succeeds, try to safepoint to test the NSV implied with this special lock. 1772 ThreadBlockInVM tbivm(JavaThread::current()); 1773 WB_END 1774 1775 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1776 oop obj_oop = JNIHandles::resolve(obj); 1777 return (jboolean) obj_oop->mark().has_monitor(); 1778 WB_END 1779 1780 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1781 VM_ForceSafepoint force_safepoint_op; 1782 VMThread::execute(&force_safepoint_op); 1783 WB_END 1784 1785 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1786 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1787 return (jlong) ik->constants(); 1788 WB_END 1789 1790 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1791 return ConstantPool::CPCACHE_INDEX_TAG; 1792 WB_END 1793 1794 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1795 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1796 ConstantPool* cp = ik->constants(); 1797 if (cp->cache() == NULL) { 1798 return -1; 1799 } 1800 return cp->cache()->length(); 1801 WB_END 1802 1803 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1804 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1805 ConstantPool* cp = ik->constants(); 1806 if (cp->cache() == NULL) { 1807 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1808 } 1809 jint cpci = index; 1810 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1811 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1812 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1813 } 1814 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1815 return cpi; 1816 WB_END 1817 1818 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1819 return ConstantPool::encode_invokedynamic_index(index); 1820 WB_END 1821 1822 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1823 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1824 VMThread::execute(&clear_ics); 1825 WB_END 1826 1827 template <typename T> 1828 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1829 assert(value != NULL, "sanity"); 1830 if (method == NULL || name == NULL) { 1831 return false; 1832 } 1833 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1834 CHECK_JNI_EXCEPTION_(env, false); 1835 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1836 // can't be in VM when we call JNI 1837 ThreadToNativeFromVM ttnfv(thread); 1838 const char* flag_name = env->GetStringUTFChars(name, NULL); 1839 CHECK_JNI_EXCEPTION_(env, false); 1840 bool result = CompilerOracle::has_option_value(mh, flag_name, *value); 1841 env->ReleaseStringUTFChars(name, flag_name); 1842 return result; 1843 } 1844 1845 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1846 bool result; 1847 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1848 // can't be in VM when we call JNI 1849 ThreadToNativeFromVM ttnfv(thread); 1850 return booleanBox(thread, env, result); 1851 } 1852 return NULL; 1853 WB_END 1854 1855 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1856 intx result; 1857 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1858 // can't be in VM when we call JNI 1859 ThreadToNativeFromVM ttnfv(thread); 1860 return longBox(thread, env, result); 1861 } 1862 return NULL; 1863 WB_END 1864 1865 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1866 uintx result; 1867 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1868 // can't be in VM when we call JNI 1869 ThreadToNativeFromVM ttnfv(thread); 1870 return longBox(thread, env, result); 1871 } 1872 return NULL; 1873 WB_END 1874 1875 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1876 double result; 1877 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1878 // can't be in VM when we call JNI 1879 ThreadToNativeFromVM ttnfv(thread); 1880 return doubleBox(thread, env, result); 1881 } 1882 return NULL; 1883 WB_END 1884 1885 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1886 ccstr ccstrResult; 1887 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 1888 // can't be in VM when we call JNI 1889 ThreadToNativeFromVM ttnfv(thread); 1890 jstring result = env->NewStringUTF(ccstrResult); 1891 CHECK_JNI_EXCEPTION_(env, NULL); 1892 return result; 1893 } 1894 return NULL; 1895 WB_END 1896 1897 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb)) 1898 const char* p = Arguments::get_default_shared_archive_path(); 1899 ThreadToNativeFromVM ttn(thread); 1900 jstring path_string = env->NewStringUTF(p); 1901 1902 CHECK_JNI_EXCEPTION_(env, NULL); 1903 1904 return path_string; 1905 WB_END 1906 1907 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb)) 1908 return UseSharedSpaces; 1909 WB_END 1910 1911 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb)) 1912 return FileMapInfo::memory_mapping_failed(); 1913 WB_END 1914 1915 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 1916 oop obj_oop = JNIHandles::resolve(obj); 1917 return HeapShared::is_archived_object(obj_oop); 1918 WB_END 1919 1920 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 1921 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1922 WB_END 1923 1924 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env)) 1925 return !HeapShared::closed_archive_heap_region_mapped(); 1926 WB_END 1927 1928 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz)) 1929 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 1930 if (k->is_instance_klass()) { 1931 InstanceKlass *ik = InstanceKlass::cast(k); 1932 ConstantPool *cp = ik->constants(); 1933 objArrayOop refs = cp->resolved_references(); 1934 return (jobject)JNIHandles::make_local(env, refs); 1935 } else { 1936 return NULL; 1937 } 1938 WB_END 1939 1940 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz)) 1941 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 1942 if (!k->is_instance_klass()) { 1943 return; 1944 } 1945 InstanceKlass *ik = InstanceKlass::cast(k); 1946 ik->link_class(THREAD); // may throw verification error 1947 WB_END 1948 1949 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 1950 return HeapShared::open_archive_heap_region_mapped(); 1951 WB_END 1952 1953 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env)) 1954 #if INCLUDE_CDS 1955 # ifdef _LP64 1956 if (!UseCompressedOops || !UseCompressedClassPointers) { 1957 // On 64-bit VMs, CDS is supported only with compressed oops/pointers 1958 return false; 1959 } 1960 # endif // _LP64 1961 return true; 1962 #else 1963 return false; 1964 #endif // INCLUDE_CDS 1965 WB_END 1966 1967 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env)) 1968 return HeapShared::is_heap_object_archiving_allowed(); 1969 WB_END 1970 1971 1972 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env)) 1973 #if INCLUDE_JFR 1974 return true; 1975 #else 1976 return false; 1977 #endif // INCLUDE_JFR 1978 WB_END 1979 1980 #if INCLUDE_CDS 1981 1982 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name)) 1983 ResourceMark rm; 1984 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 1985 int result = CDSOffsets::find_offset(c_name); 1986 return (jint)result; 1987 WB_END 1988 1989 #endif // INCLUDE_CDS 1990 1991 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 1992 class TraceSelfClosure : public ThreadClosure { 1993 jint _num_threads_completed; 1994 1995 void do_thread(Thread* th) { 1996 assert(th->is_Java_thread(), "sanity"); 1997 JavaThread* jt = (JavaThread*)th; 1998 ResourceMark rm; 1999 2000 jt->print_on(tty); 2001 jt->print_stack_on(tty); 2002 tty->cr(); 2003 Atomic::inc(&_num_threads_completed); 2004 } 2005 2006 public: 2007 TraceSelfClosure() : _num_threads_completed(0) {} 2008 2009 jint num_threads_completed() const { return _num_threads_completed; } 2010 }; 2011 TraceSelfClosure tsc; 2012 2013 if (all_threads) { 2014 Handshake::execute(&tsc); 2015 } else { 2016 oop thread_oop = JNIHandles::resolve(thread_handle); 2017 if (thread_oop != NULL) { 2018 JavaThread* target = java_lang_Thread::thread(thread_oop); 2019 Handshake::execute(&tsc, target); 2020 } 2021 } 2022 return tsc.num_threads_completed(); 2023 WB_END 2024 2025 //Some convenience methods to deal with objects from java 2026 int WhiteBox::offset_for_field(const char* field_name, oop object, 2027 Symbol* signature_symbol) { 2028 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 2029 Thread* THREAD = Thread::current(); 2030 2031 //Get the class of our object 2032 Klass* arg_klass = object->klass(); 2033 //Turn it into an instance-klass 2034 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 2035 2036 //Create symbols to look for in the class 2037 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name); 2038 2039 //To be filled in with an offset of the field we're looking for 2040 fieldDescriptor fd; 2041 2042 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 2043 if (res == NULL) { 2044 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 2045 name_symbol->as_C_string()); 2046 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 2047 } 2048 2049 //fetch the field at the offset we've found 2050 int dest_offset = fd.offset(); 2051 2052 return dest_offset; 2053 } 2054 2055 2056 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 2057 int offset = offset_for_field(field_name, object, 2058 vmSymbols::string_signature()); 2059 oop string = object->obj_field(offset); 2060 if (string == NULL) { 2061 return NULL; 2062 } 2063 const char* ret = java_lang_String::as_utf8_string(string); 2064 return ret; 2065 } 2066 2067 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 2068 int offset = 2069 offset_for_field(field_name, object, vmSymbols::bool_signature()); 2070 bool ret = (object->bool_field(offset) == JNI_TRUE); 2071 return ret; 2072 } 2073 2074 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 2075 ResourceMark rm; 2076 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 2077 2078 // one by one registration natives for exception catching 2079 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 2080 CHECK_JNI_EXCEPTION(env); 2081 for (int i = 0, n = method_count; i < n; ++i) { 2082 // Skip dummy entries 2083 if (method_array[i].fnPtr == NULL) continue; 2084 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 2085 jthrowable throwable_obj = env->ExceptionOccurred(); 2086 if (throwable_obj != NULL) { 2087 env->ExceptionClear(); 2088 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 2089 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 2090 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 2091 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 2092 method_array[i].name, method_array[i].signature); 2093 } 2094 } else { 2095 // Registration failed unexpectedly. 2096 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 2097 method_array[i].name, method_array[i].signature); 2098 env->UnregisterNatives(wbclass); 2099 break; 2100 } 2101 } 2102 } 2103 } 2104 2105 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 2106 // can't be in VM when we call JNI 2107 ThreadToNativeFromVM ttnfv(thread); 2108 const char* dir = env->GetStringUTFChars(compDirect, NULL); 2109 CHECK_JNI_EXCEPTION_(env, 0); 2110 int ret; 2111 { 2112 ThreadInVMfromNative ttvfn(thread); // back to VM 2113 ret = DirectivesParser::parse_string(dir, tty); 2114 } 2115 env->ReleaseStringUTFChars(compDirect, dir); 2116 // -1 for error parsing directive. Return 0 as number of directives added. 2117 if (ret == -1) { 2118 ret = 0; 2119 } 2120 return (jint) ret; 2121 WB_END 2122 2123 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 2124 DirectivesStack::pop(count); 2125 WB_END 2126 2127 // Checks that the library libfile has the noexecstack bit set. 2128 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 2129 jboolean ret = false; 2130 #ifdef LINUX 2131 // Can't be in VM when we call JNI. 2132 ThreadToNativeFromVM ttnfv(thread); 2133 const char* lf = env->GetStringUTFChars(libfile, NULL); 2134 CHECK_JNI_EXCEPTION_(env, 0); 2135 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 2136 env->ReleaseStringUTFChars(libfile, lf); 2137 #endif 2138 return ret; 2139 WB_END 2140 2141 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 2142 LINUX_ONLY(return OSContainer::is_containerized();) 2143 return false; 2144 WB_END 2145 2146 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 2147 os::print_os_info(tty); 2148 WB_END 2149 2150 // Elf decoder 2151 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 2152 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 2153 ElfFile::_do_not_cache_elf_section = true; 2154 #endif 2155 WB_END 2156 2157 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o)) 2158 return (jlong) ResolvedMethodTable::items_count(); 2159 WB_END 2160 2161 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o)) 2162 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count(); 2163 WB_END 2164 2165 WB_ENTRY(jint, WB_AotLibrariesCount(JNIEnv* env, jobject o)) 2166 jint result = 0; 2167 #if INCLUDE_AOT 2168 result = (jint) AOTLoader::heaps_count(); 2169 #endif 2170 return result; 2171 WB_END 2172 2173 #define CC (char*) 2174 2175 static JNINativeMethod methods[] = { 2176 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 2177 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 2178 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 2179 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 2180 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 2181 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 2182 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 2183 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 2184 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 2185 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, 2186 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount }, 2187 {CC"parseCommandLine0", 2188 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 2189 (void*) &WB_ParseCommandLine 2190 }, 2191 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2192 (void*)&WB_AddToBootstrapClassLoaderSearch}, 2193 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2194 (void*)&WB_AddToSystemClassLoaderSearch}, 2195 {CC"getCompressedOopsMaxHeapSize", CC"()J", 2196 (void*)&WB_GetCompressedOopsMaxHeapSize}, 2197 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 2198 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 2199 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 2200 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 2201 #if INCLUDE_CDS 2202 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName}, 2203 #endif 2204 #if INCLUDE_G1GC 2205 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 2206 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 2207 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 2208 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 2209 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 2210 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 2211 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 2212 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 2213 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 2214 (void*)&WB_G1AuxiliaryMemoryUsage }, 2215 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 2216 #endif // INCLUDE_G1GC 2217 #if INCLUDE_G1GC || INCLUDE_PARALLELGC 2218 {CC"dramReservedStart", CC"()J", (void*)&WB_DramReservedStart }, 2219 {CC"dramReservedEnd", CC"()J", (void*)&WB_DramReservedEnd }, 2220 {CC"nvdimmReservedStart", CC"()J", (void*)&WB_NvdimmReservedStart }, 2221 {CC"nvdimmReservedEnd", CC"()J", (void*)&WB_NvdimmReservedEnd }, 2222 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC 2223 #if INCLUDE_PARALLELGC 2224 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 2225 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 2226 #endif 2227 #if INCLUDE_NMT 2228 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 2229 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 2230 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType}, 2231 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 2232 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 2233 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 2234 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 2235 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 2236 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 2237 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 2238 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 2239 #endif // INCLUDE_NMT 2240 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 2241 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 2242 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 2243 (void*)&WB_DeoptimizeMethod }, 2244 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 2245 (void*)&WB_IsMethodCompiled }, 2246 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 2247 (void*)&WB_IsMethodCompilable}, 2248 {CC"isMethodQueuedForCompilation0", 2249 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 2250 {CC"isIntrinsicAvailable0", 2251 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2252 (void*)&WB_IsIntrinsicAvailable}, 2253 {CC"makeMethodNotCompilable0", 2254 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2255 {CC"testSetDontInlineMethod0", 2256 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2257 {CC"getMethodCompilationLevel0", 2258 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2259 {CC"getMethodEntryBci0", 2260 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2261 {CC"getCompileQueueSize", 2262 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2263 {CC"testSetForceInlineMethod0", 2264 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2265 {CC"enqueueMethodForCompilation0", 2266 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2267 {CC"enqueueInitializerForCompilation0", 2268 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2269 {CC"markMethodProfiled", 2270 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled}, 2271 {CC"clearMethodState0", 2272 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2273 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2274 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2275 {CC"matchesMethod", 2276 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2277 (void*)&WB_MatchesMethod}, 2278 {CC"matchesInline", 2279 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2280 (void*)&WB_MatchesInline}, 2281 {CC"shouldPrintAssembly", 2282 CC"(Ljava/lang/reflect/Executable;I)Z", 2283 (void*)&WB_ShouldPrintAssembly}, 2284 2285 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2286 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2287 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2288 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2289 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2290 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2291 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2292 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2293 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2294 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2295 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2296 (void*)&WB_SetStringVMFlag}, 2297 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2298 (void*)&WB_GetBooleanVMFlag}, 2299 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2300 (void*)&WB_GetIntVMFlag}, 2301 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2302 (void*)&WB_GetUintVMFlag}, 2303 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2304 (void*)&WB_GetIntxVMFlag}, 2305 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2306 (void*)&WB_GetUintxVMFlag}, 2307 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2308 (void*)&WB_GetUint64VMFlag}, 2309 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2310 (void*)&WB_GetSizeTVMFlag}, 2311 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2312 (void*)&WB_GetDoubleVMFlag}, 2313 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2314 (void*)&WB_GetStringVMFlag}, 2315 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2316 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2317 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2318 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2319 {CC"allocateMetaspace", 2320 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2321 {CC"freeMetaspace", 2322 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 2323 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2324 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2325 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect }, 2326 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment }, 2327 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2328 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2329 (void*)&WB_GetNMethod }, 2330 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 2331 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2332 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2333 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2334 {CC"getCompilationActivityMode", 2335 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2336 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2337 (void*)&WB_GetMethodData }, 2338 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2339 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2340 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2341 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2342 (void*)&WB_DefineModule }, 2343 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2344 (void*)&WB_AddModuleExports }, 2345 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2346 (void*)&WB_AddReadsModule }, 2347 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2348 (void*)&WB_AddModuleExportsToAllUnnamed }, 2349 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2350 (void*)&WB_AddModuleExportsToAll }, 2351 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls }, 2352 {CC"assertSpecialLock", CC"(ZZ)V", (void*)&WB_AssertSpecialLock }, 2353 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2354 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2355 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2356 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 2357 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 2358 {CC"remapInstructionOperandFromCPCache0", 2359 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 2360 {CC"encodeConstantPoolIndyIndex0", 2361 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 2362 {CC"getMethodBooleanOption", 2363 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2364 (void*)&WB_GetMethodBooleaneOption}, 2365 {CC"getMethodIntxOption", 2366 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2367 (void*)&WB_GetMethodIntxOption}, 2368 {CC"getMethodUintxOption", 2369 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2370 (void*)&WB_GetMethodUintxOption}, 2371 {CC"getMethodDoubleOption", 2372 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2373 (void*)&WB_GetMethodDoubleOption}, 2374 {CC"getMethodStringOption", 2375 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2376 (void*)&WB_GetMethodStringOption}, 2377 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;", 2378 (void*)&WB_GetDefaultArchivePath}, 2379 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled}, 2380 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 2381 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2382 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored }, 2383 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 2384 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass}, 2385 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2386 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild }, 2387 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild }, 2388 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported }, 2389 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed }, 2390 2391 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2392 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2393 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2394 (void*)&WB_AddCompilerDirective }, 2395 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2396 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported}, 2397 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected}, 2398 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically}, 2399 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl}, 2400 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z", 2401 (void*)&WB_RequestConcurrentGCPhase}, 2402 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2403 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2404 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2405 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2406 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 2407 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount }, 2408 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount }, 2409 {CC"aotLibrariesCount", CC"()I", (void*)&WB_AotLibrariesCount }, 2410 }; 2411 2412 2413 #undef CC 2414 2415 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2416 { 2417 if (WhiteBoxAPI) { 2418 // Make sure that wbclass is loaded by the null classloader 2419 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass()); 2420 Handle loader(THREAD, ik->class_loader()); 2421 if (loader.is_null()) { 2422 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2423 WhiteBox::set_used(); 2424 } 2425 } 2426 } 2427 JVM_END