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