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