1 /* 2 * Copyright (c) 2012, 2020, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 27 #include <new> 28 29 #include "classfile/classLoaderDataGraph.hpp" 30 #include "classfile/modules.hpp" 31 #include "classfile/protectionDomainCache.hpp" 32 #include "classfile/stringTable.hpp" 33 #include "classfile/symbolTable.hpp" 34 #include "code/codeCache.hpp" 35 #include "compiler/compilationPolicy.hpp" 36 #include "compiler/methodMatcher.hpp" 37 #include "compiler/directivesParser.hpp" 38 #include "gc/shared/concurrentGCBreakpoints.hpp" 39 #include "gc/shared/gcConfig.hpp" 40 #include "gc/shared/genArguments.hpp" 41 #include "gc/shared/genCollectedHeap.hpp" 42 #include "jvmtifiles/jvmtiEnv.hpp" 43 #include "memory/filemap.hpp" 44 #include "memory/heapShared.inline.hpp" 45 #include "memory/metaspaceShared.hpp" 46 #include "memory/metadataFactory.hpp" 47 #include "memory/iterator.hpp" 48 #include "memory/resourceArea.hpp" 49 #include "memory/universe.hpp" 50 #include "memory/oopFactory.hpp" 51 #include "oops/array.hpp" 52 #include "oops/compressedOops.hpp" 53 #include "oops/constantPool.inline.hpp" 54 #include "oops/method.inline.hpp" 55 #include "oops/objArrayKlass.hpp" 56 #include "oops/objArrayOop.inline.hpp" 57 #include "oops/oop.inline.hpp" 58 #include "oops/typeArrayOop.inline.hpp" 59 #include "prims/resolvedMethodTable.hpp" 60 #include "prims/wbtestmethods/parserTests.hpp" 61 #include "prims/whitebox.inline.hpp" 62 #include "runtime/arguments.hpp" 63 #include "runtime/atomic.hpp" 64 #include "runtime/deoptimization.hpp" 65 #include "runtime/fieldDescriptor.inline.hpp" 66 #include "runtime/flags/jvmFlag.hpp" 67 #include "runtime/frame.inline.hpp" 68 #include "runtime/handles.inline.hpp" 69 #include "runtime/handshake.hpp" 70 #include "runtime/interfaceSupport.inline.hpp" 71 #include "runtime/javaCalls.hpp" 72 #include "runtime/jniHandles.inline.hpp" 73 #include "runtime/os.hpp" 74 #include "runtime/sweeper.hpp" 75 #include "runtime/thread.hpp" 76 #include "runtime/threadSMR.hpp" 77 #include "runtime/vm_version.hpp" 78 #include "services/memoryService.hpp" 79 #include "utilities/align.hpp" 80 #include "utilities/debug.hpp" 81 #include "utilities/elfFile.hpp" 82 #include "utilities/exceptions.hpp" 83 #include "utilities/macros.hpp" 84 #if INCLUDE_CDS 85 #include "prims/cdsoffsets.hpp" 86 #endif // INCLUDE_CDS 87 #if INCLUDE_G1GC 88 #include "gc/g1/g1Arguments.hpp" 89 #include "gc/g1/g1CollectedHeap.inline.hpp" 90 #include "gc/g1/g1ConcurrentMark.hpp" 91 #include "gc/g1/g1ConcurrentMarkThread.hpp" 92 #include "gc/g1/heapRegionRemSet.hpp" 93 #include "gc/g1/heterogeneousHeapRegionManager.hpp" 94 #endif // INCLUDE_G1GC 95 #if INCLUDE_PARALLELGC 96 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 97 #include "gc/parallel/adjoiningGenerations.hpp" 98 #endif // INCLUDE_PARALLELGC 99 #if INCLUDE_NMT 100 #include "services/mallocSiteTable.hpp" 101 #include "services/memTracker.hpp" 102 #include "utilities/nativeCallStack.hpp" 103 #endif // INCLUDE_NMT 104 #if INCLUDE_AOT 105 #include "aot/aotLoader.hpp" 106 #endif // INCLUDE_AOT 107 108 #ifdef LINUX 109 #include "osContainer_linux.hpp" 110 #include "cgroupSubsystem_linux.hpp" 111 #endif 112 113 #define SIZE_T_MAX_VALUE ((size_t) -1) 114 115 #define CHECK_JNI_EXCEPTION_(env, value) \ 116 do { \ 117 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 118 THREAD->clear_pending_jni_exception_check(); \ 119 if (HAS_PENDING_EXCEPTION) { \ 120 return(value); \ 121 } \ 122 } while (0) 123 124 #define CHECK_JNI_EXCEPTION(env) \ 125 do { \ 126 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 127 THREAD->clear_pending_jni_exception_check(); \ 128 if (HAS_PENDING_EXCEPTION) { \ 129 return; \ 130 } \ 131 } while (0) 132 133 bool WhiteBox::_used = false; 134 volatile bool WhiteBox::compilation_locked = false; 135 136 class VM_WhiteBoxOperation : public VM_Operation { 137 public: 138 VM_WhiteBoxOperation() { } 139 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 140 bool allow_nested_vm_operations() const { return true; } 141 }; 142 143 144 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 145 return (jlong)(void*)JNIHandles::resolve(obj); 146 WB_END 147 148 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 149 return heapOopSize; 150 WB_END 151 152 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 153 return os::vm_page_size(); 154 WB_END 155 156 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 157 return os::vm_allocation_granularity(); 158 WB_END 159 160 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 161 return os::large_page_size(); 162 WB_END 163 164 class WBIsKlassAliveClosure : public LockedClassesDo { 165 Symbol* _name; 166 int _count; 167 public: 168 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {} 169 170 void do_klass(Klass* k) { 171 Symbol* ksym = k->name(); 172 if (ksym->fast_compare(_name) == 0) { 173 _count++; 174 } 175 } 176 177 int count() const { 178 return _count; 179 } 180 }; 181 182 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name)) 183 oop h_name = JNIHandles::resolve(name); 184 if (h_name == NULL) return false; 185 Symbol* sym = java_lang_String::as_symbol(h_name); 186 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 187 188 WBIsKlassAliveClosure closure(sym); 189 ClassLoaderDataGraph::classes_do(&closure); 190 191 // Return the count of alive classes with this name. 192 return closure.count(); 193 WB_END 194 195 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name)) 196 oop h_name = JNIHandles::resolve(name); 197 if (h_name == NULL) return false; 198 Symbol* sym = java_lang_String::as_symbol(h_name); 199 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 200 return (jint)sym->refcount(); 201 WB_END 202 203 204 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 205 #if INCLUDE_JVMTI 206 ResourceMark rm; 207 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 208 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 209 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 210 assert(err == JVMTI_ERROR_NONE, "must not fail"); 211 #endif 212 } 213 WB_END 214 215 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 216 #if INCLUDE_JVMTI 217 ResourceMark rm; 218 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 219 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 220 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 221 assert(err == JVMTI_ERROR_NONE, "must not fail"); 222 #endif 223 } 224 WB_END 225 226 227 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 228 return (jlong)Arguments::max_heap_for_compressed_oops(); 229 } 230 WB_END 231 232 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 233 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " " 234 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 235 MinHeapSize, 236 InitialHeapSize, 237 MaxHeapSize, 238 SpaceAlignment, 239 HeapAlignment); 240 } 241 WB_END 242 243 #ifndef PRODUCT 244 // Forward declaration 245 void TestReservedSpace_test(); 246 void TestReserveMemorySpecial_test(); 247 void TestVirtualSpace_test(); 248 #endif 249 250 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) 251 #ifndef PRODUCT 252 TestReservedSpace_test(); 253 TestReserveMemorySpecial_test(); 254 TestVirtualSpace_test(); 255 #endif 256 WB_END 257 258 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 259 size_t granularity = os::vm_allocation_granularity(); 260 ReservedHeapSpace rhs(100 * granularity, granularity, false); 261 VirtualSpace vs; 262 vs.initialize(rhs, 50 * granularity); 263 264 // Check if constraints are complied 265 if (!( UseCompressedOops && rhs.base() != NULL && 266 CompressedOops::base() != NULL && 267 CompressedOops::use_implicit_null_checks() )) { 268 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 269 "\tUseCompressedOops is %d\n" 270 "\trhs.base() is " PTR_FORMAT "\n" 271 "\tCompressedOops::base() is " PTR_FORMAT "\n" 272 "\tCompressedOops::use_implicit_null_checks() is %d", 273 UseCompressedOops, 274 p2i(rhs.base()), 275 p2i(CompressedOops::base()), 276 CompressedOops::use_implicit_null_checks()); 277 return; 278 } 279 tty->print_cr("Reading from no access area... "); 280 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 281 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 282 WB_END 283 284 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 285 size_t magnitude, size_t iterations) { 286 size_t granularity = os::vm_allocation_granularity(); 287 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false); 288 VirtualSpace vs; 289 if (!vs.initialize(rhs, 0)) { 290 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 291 return 3; 292 } 293 294 int seed = os::random(); 295 tty->print_cr("Random seed is %d", seed); 296 os::init_random(seed); 297 298 for (size_t i = 0; i < iterations; i++) { 299 300 // Whether we will shrink or grow 301 bool shrink = os::random() % 2L == 0; 302 303 // Get random delta to resize virtual space 304 size_t delta = (size_t)os::random() % magnitude; 305 306 // If we are about to shrink virtual space below zero, then expand instead 307 if (shrink && vs.committed_size() < delta) { 308 shrink = false; 309 } 310 311 // Resizing by delta 312 if (shrink) { 313 vs.shrink_by(delta); 314 } else { 315 // If expanding fails expand_by will silently return false 316 vs.expand_by(delta, true); 317 } 318 } 319 return 0; 320 } 321 322 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 323 jlong reserved_space_size, jlong magnitude, jlong iterations)) 324 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 325 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 326 iterations); 327 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 328 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 329 return 1; 330 } 331 332 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 333 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 334 if (sizeof(size_t) < sizeof(jlong)) { 335 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; 336 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 337 || iterations > size_t_max_value) { 338 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 339 return 2; 340 } 341 } 342 343 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 344 (size_t) magnitude, (size_t) iterations); 345 WB_END 346 347 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name)) 348 return GCConfig::is_gc_supported((CollectedHeap::Name)name); 349 WB_END 350 351 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name)) 352 return GCConfig::is_gc_selected((CollectedHeap::Name)name); 353 WB_END 354 355 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o)) 356 return GCConfig::is_gc_selected_ergonomically(); 357 WB_END 358 359 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 360 oop p = JNIHandles::resolve(obj); 361 #if INCLUDE_G1GC 362 if (UseG1GC) { 363 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 364 const HeapRegion* hr = g1h->heap_region_containing(p); 365 if (hr == NULL) { 366 return false; 367 } 368 return !(hr->is_young()); 369 } 370 #endif 371 #if INCLUDE_PARALLELGC 372 if (UseParallelGC) { 373 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 374 return !psh->is_in_young(p); 375 } 376 #endif 377 #if INCLUDE_ZGC 378 if (UseZGC) { 379 return Universe::heap()->is_in(p); 380 } 381 #endif 382 GenCollectedHeap* gch = GenCollectedHeap::heap(); 383 return !gch->is_in_young(p); 384 WB_END 385 386 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 387 oop p = JNIHandles::resolve(obj); 388 return Universe::heap()->obj_size(p) * HeapWordSize; 389 WB_END 390 391 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 392 return (jlong)SpaceAlignment; 393 WB_END 394 395 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 396 return (jlong)HeapAlignment; 397 WB_END 398 399 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o)) 400 return Universe::heap()->supports_concurrent_gc_breakpoints(); 401 WB_END 402 403 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o)) 404 ConcurrentGCBreakpoints::acquire_control(); 405 WB_END 406 407 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o)) 408 ConcurrentGCBreakpoints::release_control(); 409 WB_END 410 411 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o)) 412 ConcurrentGCBreakpoints::run_to_idle(); 413 WB_END 414 415 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at)) 416 Handle h_name(THREAD, JNIHandles::resolve(at)); 417 ResourceMark rm; 418 const char* c_name = java_lang_String::as_utf8_string(h_name()); 419 return ConcurrentGCBreakpoints::run_to(c_name); 420 WB_END 421 422 #if INCLUDE_G1GC 423 424 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 425 if (UseG1GC) { 426 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 427 oop result = JNIHandles::resolve(obj); 428 const HeapRegion* hr = g1h->heap_region_containing(result); 429 return hr->is_humongous(); 430 } 431 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 432 WB_END 433 434 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 435 if (UseG1GC) { 436 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 437 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 438 return hr->is_humongous(); 439 } 440 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 441 WB_END 442 443 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 444 if (UseG1GC) { 445 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 446 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 447 return hr->is_free(); 448 } 449 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 450 WB_END 451 452 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 453 if (UseG1GC) { 454 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 455 size_t nr = g1h->max_regions(); 456 return (jlong)nr; 457 } 458 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 459 WB_END 460 461 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 462 if (UseG1GC) { 463 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 464 size_t nr = g1h->num_free_regions(); 465 return (jlong)nr; 466 } 467 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 468 WB_END 469 470 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 471 if (UseG1GC) { 472 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 473 return g1h->concurrent_mark()->cm_thread()->during_cycle(); 474 } 475 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 476 WB_END 477 478 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o)) 479 if (UseG1GC) { 480 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 481 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) { 482 g1h->collect(GCCause::_wb_conc_mark); 483 return true; 484 } 485 return false; 486 } 487 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled"); 488 WB_END 489 490 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 491 if (UseG1GC) { 492 return (jint)HeapRegion::GrainBytes; 493 } 494 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 495 WB_END 496 497 #endif // INCLUDE_G1GC 498 499 #if INCLUDE_G1GC || INCLUDE_PARALLELGC 500 WB_ENTRY(jlong, WB_DramReservedStart(JNIEnv* env, jobject o)) 501 #if INCLUDE_G1GC 502 if (UseG1GC) { 503 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 504 if (g1h->is_heterogeneous_heap()) { 505 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_dram(); 506 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes); 507 } else { 508 return (jlong)g1h->base(); 509 } 510 } 511 #endif // INCLUDE_G1GC 512 #if INCLUDE_PARALLELGC 513 if (UseParallelGC) { 514 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 515 if (AllocateOldGenAt != NULL) { 516 MemRegion reserved = ps_heap->young_gen()->reserved(); 517 return (jlong)reserved.start(); 518 } else { 519 return (jlong)ps_heap->base(); 520 } 521 } 522 #endif // INCLUDE_PARALLELGC 523 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedStart: enabled only for G1 and Parallel GC"); 524 WB_END 525 526 WB_ENTRY(jlong, WB_DramReservedEnd(JNIEnv* env, jobject o)) 527 #if INCLUDE_G1GC 528 if (UseG1GC) { 529 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 530 if (g1h->is_heterogeneous_heap()) { 531 uint end_region = HeterogeneousHeapRegionManager::manager()->end_index_of_dram(); 532 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1); 533 } else { 534 return (jlong)g1h->base() + G1Arguments::heap_max_size_bytes(); 535 } 536 } 537 #endif // INCLUDE_G1GC 538 #if INCLUDE_PARALLELGC 539 if (UseParallelGC) { 540 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 541 if (AllocateOldGenAt != NULL) { 542 MemRegion reserved = ps_heap->young_gen()->reserved(); 543 return (jlong)reserved.end(); 544 } else { 545 return (jlong)ps_heap->reserved_region().end(); 546 } 547 } 548 #endif // INCLUDE_PARALLELGC 549 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedEnd: enabled only for G1 and Parallel GC"); 550 WB_END 551 552 WB_ENTRY(jlong, WB_NvdimmReservedStart(JNIEnv* env, jobject o)) 553 #if INCLUDE_G1GC 554 if (UseG1GC) { 555 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 556 if (g1h->is_heterogeneous_heap()) { 557 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm(); 558 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes); 559 } else { 560 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 561 } 562 } 563 #endif // INCLUDE_G1GC 564 #if INCLUDE_PARALLELGC 565 if (UseParallelGC) { 566 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 567 if (AllocateOldGenAt != NULL) { 568 MemRegion reserved = ps_heap->old_gen()->reserved(); 569 return (jlong)reserved.start(); 570 } else { 571 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 572 } 573 } 574 #endif // INCLUDE_PARALLELGC 575 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: enabled only for G1 and Parallel GC"); 576 WB_END 577 578 WB_ENTRY(jlong, WB_NvdimmReservedEnd(JNIEnv* env, jobject o)) 579 #if INCLUDE_G1GC 580 if (UseG1GC) { 581 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 582 if (g1h->is_heterogeneous_heap()) { 583 uint end_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm(); 584 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1); 585 } else { 586 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 587 } 588 } 589 #endif // INCLUDE_G1GC 590 #if INCLUDE_PARALLELGC 591 if (UseParallelGC) { 592 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 593 if (AllocateOldGenAt != NULL) { 594 MemRegion reserved = ps_heap->old_gen()->reserved(); 595 return (jlong)reserved.end(); 596 } else { 597 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 598 } 599 } 600 #endif // INCLUDE_PARALLELGC 601 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: enabled only for G1 and Parallel GC"); 602 WB_END 603 604 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC 605 606 #if INCLUDE_PARALLELGC 607 608 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 609 if (UseParallelGC) { 610 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment(); 611 } 612 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 613 WB_END 614 615 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 616 if (UseParallelGC) { 617 return GenAlignment; 618 } 619 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 620 WB_END 621 622 #endif // INCLUDE_PARALLELGC 623 624 #if INCLUDE_G1GC 625 626 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 627 if (UseG1GC) { 628 ResourceMark rm(THREAD); 629 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 630 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 631 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 632 return JNIHandles::make_local(env, h()); 633 } 634 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 635 WB_END 636 637 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o)) 638 if (UseG1GC) { 639 G1NUMA* numa = G1NUMA::numa(); 640 return (jint)numa->num_active_nodes(); 641 } 642 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled"); 643 WB_END 644 645 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o)) 646 if (UseG1GC) { 647 G1NUMA* numa = G1NUMA::numa(); 648 int num_node_ids = (int)numa->num_active_nodes(); 649 const int* node_ids = numa->node_ids(); 650 651 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL); 652 for (int i = 0; i < num_node_ids; i++) { 653 result->int_at_put(i, (jint)node_ids[i]); 654 } 655 return (jintArray) JNIHandles::make_local(env, result); 656 } 657 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled"); 658 WB_END 659 660 class OldRegionsLivenessClosure: public HeapRegionClosure { 661 662 private: 663 const int _liveness; 664 size_t _total_count; 665 size_t _total_memory; 666 size_t _total_memory_to_free; 667 668 public: 669 OldRegionsLivenessClosure(int liveness) : 670 _liveness(liveness), 671 _total_count(0), 672 _total_memory(0), 673 _total_memory_to_free(0) { } 674 675 size_t total_count() { return _total_count; } 676 size_t total_memory() { return _total_memory; } 677 size_t total_memory_to_free() { return _total_memory_to_free; } 678 679 bool do_heap_region(HeapRegion* r) { 680 if (r->is_old()) { 681 size_t prev_live = r->marked_bytes(); 682 size_t live = r->live_bytes(); 683 size_t size = r->used(); 684 size_t reg_size = HeapRegion::GrainBytes; 685 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 686 _total_memory += size; 687 ++_total_count; 688 if (size == reg_size) { 689 // we don't include non-full regions since they are unlikely included in mixed gc 690 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 691 _total_memory_to_free += size - prev_live; 692 } 693 } 694 } 695 return false; 696 } 697 }; 698 699 700 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 701 if (!UseG1GC) { 702 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 703 } 704 if (liveness < 0) { 705 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 706 } 707 708 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 709 OldRegionsLivenessClosure rli(liveness); 710 g1h->heap_region_iterate(&rli); 711 712 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 713 result->long_at_put(0, rli.total_count()); 714 result->long_at_put(1, rli.total_memory()); 715 result->long_at_put(2, rli.total_memory_to_free()); 716 return (jlongArray) JNIHandles::make_local(env, result); 717 WB_END 718 719 #endif // INCLUDE_G1GC 720 721 #if INCLUDE_NMT 722 // Alloc memory using the test memory type so that we can use that to see if 723 // NMT picks it up correctly 724 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 725 jlong addr = 0; 726 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 727 return addr; 728 WB_END 729 730 // Alloc memory with pseudo call stack. The test can create psudo malloc 731 // allocation site to stress the malloc tracking. 732 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 733 address pc = (address)(size_t)pseudo_stack; 734 NativeCallStack stack(&pc, 1); 735 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 736 WB_END 737 738 // Alloc memory with pseudo call stack and specific memory type. 739 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type)) 740 address pc = (address)(size_t)pseudo_stack; 741 NativeCallStack stack(&pc, 1); 742 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack); 743 WB_END 744 745 // Free the memory allocated by NMTAllocTest 746 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 747 os::free((void*)(uintptr_t)mem); 748 WB_END 749 750 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 751 jlong addr = 0; 752 753 addr = (jlong)(uintptr_t)os::reserve_memory(size); 754 MemTracker::record_virtual_memory_type((address)addr, mtTest); 755 756 return addr; 757 WB_END 758 759 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size)) 760 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr); 761 MemTracker::record_virtual_memory_type((address)addr, mtTest); 762 763 return addr; 764 WB_END 765 766 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 767 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 768 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 769 WB_END 770 771 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 772 os::uncommit_memory((char *)(uintptr_t)addr, size); 773 WB_END 774 775 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 776 os::release_memory((char *)(uintptr_t)addr, size); 777 WB_END 778 779 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env)) 780 // Test that we can downgrade NMT levels but not upgrade them. 781 if (MemTracker::tracking_level() == NMT_off) { 782 MemTracker::transition_to(NMT_off); 783 return MemTracker::tracking_level() == NMT_off; 784 } else { 785 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking"); 786 MemTracker::transition_to(NMT_summary); 787 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now"); 788 789 // Can't go to detail once NMT is set to summary. 790 MemTracker::transition_to(NMT_detail); 791 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now"); 792 793 // Shutdown sets tracking level to minimal. 794 MemTracker::shutdown(); 795 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); 796 797 // Once the tracking level is minimal, we cannot increase to summary. 798 // The code ignores this request instead of asserting because if the malloc site 799 // table overflows in another thread, it tries to change the code to summary. 800 MemTracker::transition_to(NMT_summary); 801 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 802 803 // Really can never go up to detail, verify that the code would never do this. 804 MemTracker::transition_to(NMT_detail); 805 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 806 return MemTracker::tracking_level() == NMT_minimal; 807 } 808 WB_END 809 810 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 811 int hash_size = MallocSiteTable::hash_buckets(); 812 assert(hash_size > 0, "NMT hash_size should be > 0"); 813 return (jint)hash_size; 814 WB_END 815 816 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size)) 817 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size)); 818 return (jlong)arena; 819 WB_END 820 821 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena)) 822 Arena* a = (Arena*)arena; 823 delete a; 824 WB_END 825 826 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size)) 827 Arena* a = (Arena*)arena; 828 a->Amalloc(size_t(size)); 829 WB_END 830 #endif // INCLUDE_NMT 831 832 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 833 assert(method != NULL, "method should not be null"); 834 ThreadToNativeFromVM ttn(thread); 835 return env->FromReflectedMethod(method); 836 } 837 838 static CompLevel highestCompLevel() { 839 return TieredCompilation ? MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) : CompLevel_highest_tier; 840 } 841 842 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 843 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 844 private: 845 int _result; 846 const bool _make_not_entrant; 847 public: 848 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 849 _result(0), _make_not_entrant(make_not_entrant) { } 850 int result() const { return _result; } 851 852 void doit() { 853 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 854 if (t->has_last_Java_frame()) { 855 for (StackFrameStream fst(t, false); !fst.is_done(); fst.next()) { 856 frame* f = fst.current(); 857 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 858 Deoptimization::deoptimize(t, *f); 859 if (_make_not_entrant) { 860 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 861 assert(cm != NULL, "sanity check"); 862 cm->make_not_entrant(); 863 } 864 ++_result; 865 } 866 } 867 } 868 } 869 } 870 }; 871 872 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 873 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 874 VMThread::execute(&op); 875 return op.result(); 876 WB_END 877 878 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 879 CodeCache::mark_all_nmethods_for_deoptimization(); 880 Deoptimization::deoptimize_all_marked(); 881 WB_END 882 883 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 884 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 885 int result = 0; 886 CHECK_JNI_EXCEPTION_(env, result); 887 MutexLocker mu(Compile_lock); 888 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 889 if (is_osr) { 890 result += mh->mark_osr_nmethods(); 891 } else if (mh->code() != NULL) { 892 mh->code()->mark_for_deoptimization(); 893 ++result; 894 } 895 result += CodeCache::mark_for_deoptimization(mh()); 896 if (result > 0) { 897 Deoptimization::deoptimize_all_marked(); 898 } 899 return result; 900 WB_END 901 902 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 903 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 904 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 905 MutexLocker mu(Compile_lock); 906 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 907 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 908 if (code == NULL) { 909 return JNI_FALSE; 910 } 911 return (code->is_alive() && !code->is_marked_for_deoptimization()); 912 WB_END 913 914 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 915 if (method == NULL || comp_level > highestCompLevel()) { 916 return false; 917 } 918 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 919 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 920 MutexLocker mu(Compile_lock); 921 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 922 if (is_osr) { 923 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); 924 } else { 925 return CompilationPolicy::can_be_compiled(mh, comp_level); 926 } 927 WB_END 928 929 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 930 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 931 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 932 MutexLocker mu(Compile_lock); 933 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 934 return mh->queued_for_compilation(); 935 WB_END 936 937 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 938 if (compLevel < CompLevel_none || compLevel > highestCompLevel()) { 939 return false; // Intrinsic is not available on a non-existent compilation level. 940 } 941 jmethodID method_id, compilation_context_id; 942 method_id = reflected_method_to_jmid(thread, env, method); 943 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 944 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 945 946 DirectiveSet* directive; 947 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 948 assert(comp != NULL, "compiler not available"); 949 if (compilation_context != NULL) { 950 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 951 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 952 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 953 directive = DirectivesStack::getMatchingDirective(cch, comp); 954 } else { 955 // Calling with NULL matches default directive 956 directive = DirectivesStack::getDefaultDirective(comp); 957 } 958 bool result = comp->is_intrinsic_available(mh, directive); 959 DirectivesStack::release(directive); 960 return result; 961 WB_END 962 963 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 964 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 965 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 966 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 967 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 968 return (code != NULL ? code->comp_level() : CompLevel_none); 969 WB_END 970 971 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 972 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 973 CHECK_JNI_EXCEPTION(env); 974 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 975 if (is_osr) { 976 mh->set_not_osr_compilable("WhiteBox", comp_level); 977 } else { 978 mh->set_not_compilable("WhiteBox", comp_level); 979 } 980 WB_END 981 982 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 983 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 984 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 985 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 986 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 987 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 988 WB_END 989 990 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 991 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 992 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 993 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 994 bool result = mh->dont_inline(); 995 mh->set_dont_inline(value == JNI_TRUE); 996 return result; 997 WB_END 998 999 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 1000 if (comp_level == CompLevel_any) { 1001 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 1002 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 1003 } else { 1004 return CompileBroker::queue_size(comp_level); 1005 } 1006 WB_END 1007 1008 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1009 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1010 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1011 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1012 bool result = mh->force_inline(); 1013 mh->set_force_inline(value == JNI_TRUE); 1014 return result; 1015 WB_END 1016 1017 #ifdef LINUX 1018 bool WhiteBox::validate_cgroup(const char* proc_cgroups, 1019 const char* proc_self_cgroup, 1020 const char* proc_self_mountinfo, 1021 u1* cg_flags) { 1022 CgroupInfo cg_infos[4]; 1023 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups, 1024 proc_self_cgroup, 1025 proc_self_mountinfo, cg_flags); 1026 } 1027 #endif 1028 1029 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) { 1030 // Screen for unavailable/bad comp level or null method 1031 AbstractCompiler* comp = CompileBroker::compiler(comp_level); 1032 if (method == NULL) { 1033 tty->print_cr("WB error: request to compile NULL method"); 1034 return false; 1035 } 1036 if (comp_level > highestCompLevel()) { 1037 tty->print_cr("WB error: invalid compilation level %d", comp_level); 1038 return false; 1039 } 1040 if (comp == NULL) { 1041 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level); 1042 return false; 1043 } 1044 1045 // Check if compilation is blocking 1046 methodHandle mh(THREAD, method); 1047 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 1048 bool is_blocking = !directive->BackgroundCompilationOption; 1049 DirectivesStack::release(directive); 1050 1051 // Compile method and check result 1052 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD); 1053 MutexLocker mu(THREAD, Compile_lock); 1054 bool is_queued = mh->queued_for_compilation(); 1055 if ((!is_blocking && is_queued) || nm != NULL) { 1056 return true; 1057 } 1058 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level); 1059 mh->print_short_name(tty); 1060 tty->cr(); 1061 if (is_blocking && is_queued) { 1062 tty->print_cr("WB error: blocking compilation is still in queue!"); 1063 } 1064 return false; 1065 } 1066 1067 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 1068 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1069 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1070 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 1071 WB_END 1072 1073 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 1074 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1075 Method* clinit = ik->class_initializer(); 1076 if (clinit == NULL) { 1077 return false; 1078 } 1079 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD); 1080 WB_END 1081 1082 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 1083 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1084 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1085 1086 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1087 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 1088 bool result = directive->PrintAssemblyOption; 1089 DirectivesStack::release(directive); 1090 1091 return result; 1092 WB_END 1093 1094 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1095 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1096 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1097 1098 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1099 1100 ResourceMark rm(THREAD); 1101 const char* error_msg = NULL; 1102 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1103 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 1104 1105 if (m == NULL) { 1106 assert(error_msg != NULL, "Always have an error message"); 1107 tty->print_cr("Got error: %s", error_msg); 1108 return -1; // Pattern failed 1109 } 1110 1111 // Pattern works - now check if it matches 1112 int result; 1113 if (m->match(mh, InlineMatcher::force_inline)) { 1114 result = 2; // Force inline match 1115 } else if (m->match(mh, InlineMatcher::dont_inline)) { 1116 result = 1; // Dont inline match 1117 } else { 1118 result = 0; // No match 1119 } 1120 delete m; 1121 return result; 1122 WB_END 1123 1124 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1125 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1126 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1127 1128 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1129 1130 ResourceMark rm; 1131 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1132 1133 const char* error_msg = NULL; 1134 1135 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg); 1136 if (m == NULL) { 1137 assert(error_msg != NULL, "Must have error_msg"); 1138 tty->print_cr("Got error: %s", error_msg); 1139 return -1; 1140 } 1141 1142 // Pattern works - now check if it matches 1143 int result = m->matches(mh); 1144 delete m; 1145 assert(result == 0 || result == 1, "Result out of range"); 1146 return result; 1147 WB_END 1148 1149 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method)) 1150 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1151 CHECK_JNI_EXCEPTION(env); 1152 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1153 1154 MethodData* mdo = mh->method_data(); 1155 if (mdo == NULL) { 1156 Method::build_interpreter_method_data(mh, CHECK_AND_CLEAR); 1157 mdo = mh->method_data(); 1158 } 1159 mdo->init(); 1160 InvocationCounter* icnt = mdo->invocation_counter(); 1161 InvocationCounter* bcnt = mdo->backedge_counter(); 1162 // set i-counter according to TieredThresholdPolicy::is_method_profiled 1163 icnt->set(Tier4MinInvocationThreshold); 1164 bcnt->set(Tier4CompileThreshold); 1165 WB_END 1166 1167 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 1168 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1169 CHECK_JNI_EXCEPTION(env); 1170 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1171 MutexLocker mu(THREAD, Compile_lock); 1172 MethodData* mdo = mh->method_data(); 1173 MethodCounters* mcs = mh->method_counters(); 1174 1175 if (mdo != NULL) { 1176 mdo->init(); 1177 ResourceMark rm(THREAD); 1178 int arg_count = mdo->method()->size_of_parameters(); 1179 for (int i = 0; i < arg_count; i++) { 1180 mdo->set_arg_modified(i, 0); 1181 } 1182 MutexLocker mu(THREAD, mdo->extra_data_lock()); 1183 mdo->clean_method_data(/*always_clean*/true); 1184 } 1185 1186 mh->clear_not_c1_compilable(); 1187 mh->clear_not_c2_compilable(); 1188 mh->clear_not_c2_osr_compilable(); 1189 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 1190 if (mcs != NULL) { 1191 mcs->backedge_counter()->init(); 1192 mcs->invocation_counter()->init(); 1193 mcs->set_interpreter_invocation_count(0); 1194 mcs->set_interpreter_throwout_count(0); 1195 1196 #ifdef TIERED 1197 mcs->set_rate(0.0F); 1198 mh->set_prev_event_count(0); 1199 mh->set_prev_time(0); 1200 #endif 1201 } 1202 WB_END 1203 1204 template <typename T> 1205 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const JVMFlag*, T*)) { 1206 if (name == NULL) { 1207 return false; 1208 } 1209 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1210 const char* flag_name = env->GetStringUTFChars(name, NULL); 1211 CHECK_JNI_EXCEPTION_(env, false); 1212 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name); 1213 JVMFlag::Error result = (*TAt)(flag, value); 1214 env->ReleaseStringUTFChars(name, flag_name); 1215 return (result == JVMFlag::SUCCESS); 1216 } 1217 1218 template <typename T> 1219 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(JVMFlag* flag, T*, JVMFlag::Flags)) { 1220 if (name == NULL) { 1221 return false; 1222 } 1223 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1224 const char* flag_name = env->GetStringUTFChars(name, NULL); 1225 CHECK_JNI_EXCEPTION_(env, false); 1226 JVMFlag* flag = JVMFlag::find_flag(flag_name); 1227 JVMFlag::Error result = (*TAtPut)(flag, value, JVMFlag::INTERNAL); 1228 env->ReleaseStringUTFChars(name, flag_name); 1229 return (result == JVMFlag::SUCCESS); 1230 } 1231 1232 template <typename T> 1233 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1234 ResourceMark rm(thread); 1235 jclass clazz = env->FindClass(name->as_C_string()); 1236 CHECK_JNI_EXCEPTION_(env, NULL); 1237 jmethodID methodID = env->GetStaticMethodID(clazz, 1238 vmSymbols::valueOf_name()->as_C_string(), 1239 sig->as_C_string()); 1240 CHECK_JNI_EXCEPTION_(env, NULL); 1241 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1242 CHECK_JNI_EXCEPTION_(env, NULL); 1243 return result; 1244 } 1245 1246 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1247 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1248 } 1249 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1250 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1251 } 1252 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1253 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1254 } 1255 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1256 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1257 }*/ 1258 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1259 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1260 } 1261 1262 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1263 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1264 const char* flag_name = env->GetStringUTFChars(name, NULL); 1265 CHECK_JNI_EXCEPTION_(env, NULL); 1266 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name); 1267 env->ReleaseStringUTFChars(name, flag_name); 1268 return result; 1269 } 1270 1271 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1272 const JVMFlag* flag = getVMFlag(thread, env, name); 1273 return (flag != NULL) && flag->is_constant_in_binary(); 1274 WB_END 1275 1276 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1277 const JVMFlag* flag = getVMFlag(thread, env, name); 1278 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 1279 WB_END 1280 1281 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1282 bool result; 1283 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) { 1284 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1285 return booleanBox(thread, env, result); 1286 } 1287 return NULL; 1288 WB_END 1289 1290 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1291 int result; 1292 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) { 1293 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1294 return longBox(thread, env, result); 1295 } 1296 return NULL; 1297 WB_END 1298 1299 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1300 uint result; 1301 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) { 1302 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1303 return longBox(thread, env, result); 1304 } 1305 return NULL; 1306 WB_END 1307 1308 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1309 intx result; 1310 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) { 1311 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1312 return longBox(thread, env, result); 1313 } 1314 return NULL; 1315 WB_END 1316 1317 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1318 uintx result; 1319 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) { 1320 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1321 return longBox(thread, env, result); 1322 } 1323 return NULL; 1324 WB_END 1325 1326 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1327 uint64_t result; 1328 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) { 1329 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1330 return longBox(thread, env, result); 1331 } 1332 return NULL; 1333 WB_END 1334 1335 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1336 size_t result; 1337 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) { 1338 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1339 return longBox(thread, env, result); 1340 } 1341 return NULL; 1342 WB_END 1343 1344 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1345 double result; 1346 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) { 1347 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1348 return doubleBox(thread, env, result); 1349 } 1350 return NULL; 1351 WB_END 1352 1353 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1354 ccstr ccstrResult; 1355 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) { 1356 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1357 jstring result = env->NewStringUTF(ccstrResult); 1358 CHECK_JNI_EXCEPTION_(env, NULL); 1359 return result; 1360 } 1361 return NULL; 1362 WB_END 1363 1364 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1365 bool result = value == JNI_TRUE ? true : false; 1366 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut); 1367 WB_END 1368 1369 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1370 int result = value; 1371 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut); 1372 WB_END 1373 1374 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1375 uint result = value; 1376 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut); 1377 WB_END 1378 1379 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1380 intx result = value; 1381 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut); 1382 WB_END 1383 1384 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1385 uintx result = value; 1386 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut); 1387 WB_END 1388 1389 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1390 uint64_t result = value; 1391 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut); 1392 WB_END 1393 1394 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1395 size_t result = value; 1396 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut); 1397 WB_END 1398 1399 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1400 double result = value; 1401 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut); 1402 WB_END 1403 1404 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1405 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1406 const char* ccstrValue; 1407 if (value == NULL) { 1408 ccstrValue = NULL; 1409 } 1410 else { 1411 ccstrValue = env->GetStringUTFChars(value, NULL); 1412 CHECK_JNI_EXCEPTION(env); 1413 } 1414 ccstr ccstrResult = ccstrValue; 1415 bool needFree; 1416 { 1417 ThreadInVMfromNative ttvfn(thread); // back to VM 1418 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut); 1419 } 1420 if (value != NULL) { 1421 env->ReleaseStringUTFChars(value, ccstrValue); 1422 } 1423 if (needFree) { 1424 FREE_C_HEAP_ARRAY(char, ccstrResult); 1425 } 1426 WB_END 1427 1428 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1429 WhiteBox::compilation_locked = true; 1430 WB_END 1431 1432 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1433 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1434 WhiteBox::compilation_locked = false; 1435 mo.notify_all(); 1436 WB_END 1437 1438 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 1439 // Force a code cache sweep and block until it finished 1440 NMethodSweeper::force_sweep(); 1441 WB_END 1442 1443 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1444 ResourceMark rm(THREAD); 1445 int len; 1446 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1447 return (StringTable::lookup(name, len) != NULL); 1448 WB_END 1449 1450 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1451 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1452 Universe::heap()->collect(GCCause::_wb_full_gc); 1453 #if INCLUDE_G1GC 1454 if (UseG1GC) { 1455 // Needs to be cleared explicitly for G1 1456 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1457 } 1458 #endif // INCLUDE_G1GC 1459 WB_END 1460 1461 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1462 Universe::heap()->collect(GCCause::_wb_young_gc); 1463 WB_END 1464 1465 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1466 // static+volatile in order to force the read to happen 1467 // (not be eliminated by the compiler) 1468 static char c; 1469 static volatile char* p; 1470 1471 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 1472 if (p == NULL) { 1473 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1474 } 1475 1476 c = *p; 1477 WB_END 1478 1479 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1480 const char* features = VM_Version::features_string(); 1481 ThreadToNativeFromVM ttn(thread); 1482 jstring features_string = env->NewStringUTF(features); 1483 1484 CHECK_JNI_EXCEPTION_(env, NULL); 1485 1486 return features_string; 1487 WB_END 1488 1489 int WhiteBox::get_blob_type(const CodeBlob* code) { 1490 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1491 if (code->is_aot()) { 1492 return -1; 1493 } 1494 return CodeCache::get_code_heap(code)->code_blob_type(); 1495 } 1496 1497 CodeHeap* WhiteBox::get_code_heap(int blob_type) { 1498 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1499 return CodeCache::get_code_heap(blob_type); 1500 } 1501 1502 struct CodeBlobStub { 1503 CodeBlobStub(const CodeBlob* blob) : 1504 name(os::strdup(blob->name())), 1505 size(blob->size()), 1506 blob_type(WhiteBox::get_blob_type(blob)), 1507 address((jlong) blob) { } 1508 ~CodeBlobStub() { os::free((void*) name); } 1509 const char* const name; 1510 const jint size; 1511 const jint blob_type; 1512 const jlong address; 1513 }; 1514 1515 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1516 ResourceMark rm; 1517 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1518 CHECK_JNI_EXCEPTION_(env, NULL); 1519 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1520 1521 jstring name = env->NewStringUTF(cb->name); 1522 CHECK_JNI_EXCEPTION_(env, NULL); 1523 env->SetObjectArrayElement(result, 0, name); 1524 1525 jobject obj = integerBox(thread, env, cb->size); 1526 CHECK_JNI_EXCEPTION_(env, NULL); 1527 env->SetObjectArrayElement(result, 1, obj); 1528 1529 obj = integerBox(thread, env, cb->blob_type); 1530 CHECK_JNI_EXCEPTION_(env, NULL); 1531 env->SetObjectArrayElement(result, 2, obj); 1532 1533 obj = longBox(thread, env, cb->address); 1534 CHECK_JNI_EXCEPTION_(env, NULL); 1535 env->SetObjectArrayElement(result, 3, obj); 1536 1537 return result; 1538 } 1539 1540 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1541 ResourceMark rm(THREAD); 1542 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1543 CHECK_JNI_EXCEPTION_(env, NULL); 1544 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1545 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1546 jobjectArray result = NULL; 1547 if (code == NULL) { 1548 return result; 1549 } 1550 int comp_level = code->comp_level(); 1551 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size(); 1552 1553 ThreadToNativeFromVM ttn(thread); 1554 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1555 CHECK_JNI_EXCEPTION_(env, NULL); 1556 result = env->NewObjectArray(5, clazz, NULL); 1557 if (result == NULL) { 1558 return result; 1559 } 1560 1561 CodeBlobStub stub(code); 1562 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1563 CHECK_JNI_EXCEPTION_(env, NULL); 1564 env->SetObjectArrayElement(result, 0, codeBlob); 1565 1566 jobject level = integerBox(thread, env, comp_level); 1567 CHECK_JNI_EXCEPTION_(env, NULL); 1568 env->SetObjectArrayElement(result, 1, level); 1569 1570 jbyteArray insts = env->NewByteArray(insts_size); 1571 CHECK_JNI_EXCEPTION_(env, NULL); 1572 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1573 env->SetObjectArrayElement(result, 2, insts); 1574 1575 jobject id = integerBox(thread, env, code->compile_id()); 1576 CHECK_JNI_EXCEPTION_(env, NULL); 1577 env->SetObjectArrayElement(result, 3, id); 1578 1579 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1580 CHECK_JNI_EXCEPTION_(env, NULL); 1581 env->SetObjectArrayElement(result, 4, entry_point); 1582 1583 return result; 1584 WB_END 1585 1586 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1587 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1588 BufferBlob* blob; 1589 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1590 if (full_size < size) { 1591 full_size += align_up(size - full_size, oopSize); 1592 } 1593 { 1594 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1595 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1596 if (blob != NULL) { 1597 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1598 } 1599 } 1600 // Track memory usage statistic after releasing CodeCache_lock 1601 MemoryService::track_code_cache_memory_usage(); 1602 return blob; 1603 } 1604 1605 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1606 if (size < 0) { 1607 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1608 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1609 } 1610 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1611 WB_END 1612 1613 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1614 if (addr == 0) { 1615 return; 1616 } 1617 BufferBlob::free((BufferBlob*) addr); 1618 WB_END 1619 1620 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1621 ResourceMark rm; 1622 GrowableArray<CodeBlobStub*> blobs; 1623 { 1624 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1625 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1626 if (heap == NULL) { 1627 return NULL; 1628 } 1629 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1630 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1631 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1632 new (stub) CodeBlobStub(cb); 1633 blobs.append(stub); 1634 } 1635 } 1636 ThreadToNativeFromVM ttn(thread); 1637 jobjectArray result = NULL; 1638 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1639 CHECK_JNI_EXCEPTION_(env, NULL); 1640 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1641 CHECK_JNI_EXCEPTION_(env, NULL); 1642 if (result == NULL) { 1643 return result; 1644 } 1645 int i = 0; 1646 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1647 it != blobs.end(); ++it) { 1648 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1649 CHECK_JNI_EXCEPTION_(env, NULL); 1650 env->SetObjectArrayElement(result, i, obj); 1651 CHECK_JNI_EXCEPTION_(env, NULL); 1652 ++i; 1653 } 1654 return result; 1655 WB_END 1656 1657 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1658 return CompileBroker::get_compilation_activity_mode(); 1659 WB_END 1660 1661 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1662 if (addr == 0) { 1663 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1664 "WB_GetCodeBlob: addr is null"); 1665 } 1666 ThreadToNativeFromVM ttn(thread); 1667 CodeBlobStub stub((CodeBlob*) addr); 1668 return codeBlob2objectArray(thread, env, &stub); 1669 WB_END 1670 1671 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1672 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1673 CHECK_JNI_EXCEPTION_(env, 0); 1674 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1675 return (jlong) mh->method_data(); 1676 WB_END 1677 1678 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1679 return (jlong) Thread::current()->stack_size(); 1680 WB_END 1681 1682 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1683 JavaThread* t = JavaThread::current(); 1684 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size(); 1685 WB_END 1686 1687 1688 int WhiteBox::array_bytes_to_length(size_t bytes) { 1689 return Array<u1>::bytes_to_length(bytes); 1690 } 1691 1692 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1693 if (size < 0) { 1694 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1695 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1696 } 1697 1698 oop class_loader_oop = JNIHandles::resolve(class_loader); 1699 ClassLoaderData* cld = class_loader_oop != NULL 1700 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1701 : ClassLoaderData::the_null_class_loader_data(); 1702 1703 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1704 1705 return (jlong)(uintptr_t)metadata; 1706 WB_END 1707 1708 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 1709 oop class_loader_oop = JNIHandles::resolve(class_loader); 1710 ClassLoaderData* cld = class_loader_oop != NULL 1711 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1712 : ClassLoaderData::the_null_class_loader_data(); 1713 1714 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 1715 WB_END 1716 1717 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1718 jstring version, jstring location, jobjectArray packages)) 1719 ResourceMark rm(THREAD); 1720 1721 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages)); 1722 objArrayHandle packages_h(THREAD, packages_oop); 1723 int num_packages = (packages_h == NULL ? 0 : packages_h->length()); 1724 1725 char** pkgs = NULL; 1726 if (num_packages > 0) { 1727 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages); 1728 for (int x = 0; x < num_packages; x++) { 1729 oop pkg_str = packages_h->obj_at(x); 1730 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) { 1731 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 1732 err_msg("Bad package name")); 1733 } 1734 pkgs[x] = java_lang_String::as_utf8_string(pkg_str); 1735 } 1736 } 1737 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK); 1738 WB_END 1739 1740 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1741 ResourceMark rm(THREAD); 1742 char* package_name = NULL; 1743 if (package != NULL) { 1744 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1745 } 1746 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK); 1747 WB_END 1748 1749 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1750 ResourceMark rm(THREAD); 1751 char* package_name = NULL; 1752 if (package != NULL) { 1753 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1754 } 1755 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK); 1756 WB_END 1757 1758 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1759 ResourceMark rm(THREAD); 1760 char* package_name = NULL; 1761 if (package != NULL) { 1762 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1763 } 1764 Modules::add_module_exports(module, package_name, NULL, CHECK); 1765 WB_END 1766 1767 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1768 Modules::add_reads_module(from_module, source_module, CHECK); 1769 WB_END 1770 1771 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1772 if (inc < 0) { 1773 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1774 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1775 } 1776 1777 jlong max_size_t = (jlong) ((size_t) -1); 1778 if (inc > max_size_t) { 1779 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1780 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1781 } 1782 1783 size_t new_cap_until_GC = 0; 1784 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1785 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1786 if (!success) { 1787 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1788 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1789 "due to contention with another thread"); 1790 } 1791 return (jlong) new_cap_until_GC; 1792 WB_END 1793 1794 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1795 return (jlong) MetaspaceGC::capacity_until_GC(); 1796 WB_END 1797 1798 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb)) 1799 return (jlong)Metaspace::reserve_alignment(); 1800 WB_END 1801 1802 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue)) 1803 Mutex::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ? 1804 Mutex::_safepoint_check_always : 1805 Mutex::_safepoint_check_never; 1806 Mutex::SafepointCheckFlag sfpt_check_attempted = attemptedNoSafepointValue ? 1807 Mutex::_no_safepoint_check_flag : 1808 Mutex::_safepoint_check_flag; 1809 MutexLocker ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required), 1810 sfpt_check_attempted); 1811 WB_END 1812 1813 WB_ENTRY(void, WB_AssertSpecialLock(JNIEnv* env, jobject o, jboolean allowVMBlock, jboolean safepointCheck)) 1814 // Create a special lock violating condition in value 1815 Mutex::SafepointCheckRequired sfpt_check_required = safepointCheck ? 1816 Mutex::_safepoint_check_always : 1817 Mutex::_safepoint_check_never; 1818 Mutex::SafepointCheckFlag safepoint_check = safepointCheck ? 1819 Monitor::_safepoint_check_flag : 1820 Monitor::_no_safepoint_check_flag; 1821 1822 MutexLocker ml(new Mutex(Mutex::special, "SpecialTest_lock", allowVMBlock, sfpt_check_required), safepoint_check); 1823 // If the lock above succeeds, try to safepoint to test the NSV implied with this special lock. 1824 ThreadBlockInVM tbivm(JavaThread::current()); 1825 WB_END 1826 1827 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1828 oop obj_oop = JNIHandles::resolve(obj); 1829 return (jboolean) obj_oop->mark().has_monitor(); 1830 WB_END 1831 1832 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1833 VM_ForceSafepoint force_safepoint_op; 1834 VMThread::execute(&force_safepoint_op); 1835 WB_END 1836 1837 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1838 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1839 return (jlong) ik->constants(); 1840 WB_END 1841 1842 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1843 return ConstantPool::CPCACHE_INDEX_TAG; 1844 WB_END 1845 1846 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1847 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1848 ConstantPool* cp = ik->constants(); 1849 if (cp->cache() == NULL) { 1850 return -1; 1851 } 1852 return cp->cache()->length(); 1853 WB_END 1854 1855 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1856 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1857 ConstantPool* cp = ik->constants(); 1858 if (cp->cache() == NULL) { 1859 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1860 } 1861 jint cpci = index; 1862 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1863 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1864 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1865 } 1866 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1867 return cpi; 1868 WB_END 1869 1870 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1871 return ConstantPool::encode_invokedynamic_index(index); 1872 WB_END 1873 1874 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1875 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1876 VMThread::execute(&clear_ics); 1877 WB_END 1878 1879 template <typename T> 1880 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1881 assert(value != NULL, "sanity"); 1882 if (method == NULL || name == NULL) { 1883 return false; 1884 } 1885 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1886 CHECK_JNI_EXCEPTION_(env, false); 1887 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1888 // can't be in VM when we call JNI 1889 ThreadToNativeFromVM ttnfv(thread); 1890 const char* flag_name = env->GetStringUTFChars(name, NULL); 1891 CHECK_JNI_EXCEPTION_(env, false); 1892 bool result = CompilerOracle::has_option_value(mh, flag_name, *value); 1893 env->ReleaseStringUTFChars(name, flag_name); 1894 return result; 1895 } 1896 1897 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1898 bool result; 1899 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1900 // can't be in VM when we call JNI 1901 ThreadToNativeFromVM ttnfv(thread); 1902 return booleanBox(thread, env, result); 1903 } 1904 return NULL; 1905 WB_END 1906 1907 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1908 intx result; 1909 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1910 // can't be in VM when we call JNI 1911 ThreadToNativeFromVM ttnfv(thread); 1912 return longBox(thread, env, result); 1913 } 1914 return NULL; 1915 WB_END 1916 1917 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1918 uintx result; 1919 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1920 // can't be in VM when we call JNI 1921 ThreadToNativeFromVM ttnfv(thread); 1922 return longBox(thread, env, result); 1923 } 1924 return NULL; 1925 WB_END 1926 1927 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1928 double result; 1929 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1930 // can't be in VM when we call JNI 1931 ThreadToNativeFromVM ttnfv(thread); 1932 return doubleBox(thread, env, result); 1933 } 1934 return NULL; 1935 WB_END 1936 1937 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1938 ccstr ccstrResult; 1939 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 1940 // can't be in VM when we call JNI 1941 ThreadToNativeFromVM ttnfv(thread); 1942 jstring result = env->NewStringUTF(ccstrResult); 1943 CHECK_JNI_EXCEPTION_(env, NULL); 1944 return result; 1945 } 1946 return NULL; 1947 WB_END 1948 1949 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb)) 1950 const char* p = Arguments::get_default_shared_archive_path(); 1951 ThreadToNativeFromVM ttn(thread); 1952 jstring path_string = env->NewStringUTF(p); 1953 1954 CHECK_JNI_EXCEPTION_(env, NULL); 1955 1956 return path_string; 1957 WB_END 1958 1959 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb)) 1960 return UseSharedSpaces; 1961 WB_END 1962 1963 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb)) 1964 return FileMapInfo::memory_mapping_failed(); 1965 WB_END 1966 1967 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 1968 oop obj_oop = JNIHandles::resolve(obj); 1969 return HeapShared::is_archived_object(obj_oop); 1970 WB_END 1971 1972 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 1973 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1974 WB_END 1975 1976 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env)) 1977 return !HeapShared::closed_archive_heap_region_mapped(); 1978 WB_END 1979 1980 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz)) 1981 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 1982 if (k->is_instance_klass()) { 1983 InstanceKlass *ik = InstanceKlass::cast(k); 1984 ConstantPool *cp = ik->constants(); 1985 objArrayOop refs = cp->resolved_references(); 1986 return (jobject)JNIHandles::make_local(env, refs); 1987 } else { 1988 return NULL; 1989 } 1990 WB_END 1991 1992 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz)) 1993 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 1994 if (!k->is_instance_klass()) { 1995 return; 1996 } 1997 InstanceKlass *ik = InstanceKlass::cast(k); 1998 ik->link_class(THREAD); // may throw verification error 1999 WB_END 2000 2001 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 2002 return HeapShared::open_archive_heap_region_mapped(); 2003 WB_END 2004 2005 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env)) 2006 #if INCLUDE_CDS 2007 return true; 2008 #else 2009 return false; 2010 #endif // INCLUDE_CDS 2011 WB_END 2012 2013 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncludedInVmBuild(JNIEnv* env)) 2014 #if COMPILER2_OR_JVMCI 2015 return true; 2016 #else 2017 return false; 2018 #endif 2019 WB_END 2020 2021 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env)) 2022 return HeapShared::is_heap_object_archiving_allowed(); 2023 WB_END 2024 2025 2026 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env)) 2027 #if INCLUDE_JFR 2028 return true; 2029 #else 2030 return false; 2031 #endif // INCLUDE_JFR 2032 WB_END 2033 2034 #if INCLUDE_CDS 2035 2036 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name)) 2037 ResourceMark rm; 2038 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 2039 int result = CDSOffsets::find_offset(c_name); 2040 return (jint)result; 2041 WB_END 2042 2043 #endif // INCLUDE_CDS 2044 2045 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 2046 class TraceSelfClosure : public HandshakeClosure { 2047 jint _num_threads_completed; 2048 2049 void do_thread(Thread* th) { 2050 assert(th->is_Java_thread(), "sanity"); 2051 JavaThread* jt = (JavaThread*)th; 2052 ResourceMark rm; 2053 2054 jt->print_on(tty); 2055 jt->print_stack_on(tty); 2056 tty->cr(); 2057 Atomic::inc(&_num_threads_completed); 2058 } 2059 2060 public: 2061 TraceSelfClosure() : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {} 2062 2063 jint num_threads_completed() const { return _num_threads_completed; } 2064 }; 2065 TraceSelfClosure tsc; 2066 2067 if (all_threads) { 2068 Handshake::execute(&tsc); 2069 } else { 2070 oop thread_oop = JNIHandles::resolve(thread_handle); 2071 if (thread_oop != NULL) { 2072 JavaThread* target = java_lang_Thread::thread(thread_oop); 2073 Handshake::execute(&tsc, target); 2074 } 2075 } 2076 return tsc.num_threads_completed(); 2077 WB_END 2078 2079 //Some convenience methods to deal with objects from java 2080 int WhiteBox::offset_for_field(const char* field_name, oop object, 2081 Symbol* signature_symbol) { 2082 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 2083 Thread* THREAD = Thread::current(); 2084 2085 //Get the class of our object 2086 Klass* arg_klass = object->klass(); 2087 //Turn it into an instance-klass 2088 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 2089 2090 //Create symbols to look for in the class 2091 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name); 2092 2093 //To be filled in with an offset of the field we're looking for 2094 fieldDescriptor fd; 2095 2096 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 2097 if (res == NULL) { 2098 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 2099 name_symbol->as_C_string()); 2100 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 2101 } 2102 2103 //fetch the field at the offset we've found 2104 int dest_offset = fd.offset(); 2105 2106 return dest_offset; 2107 } 2108 2109 2110 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 2111 int offset = offset_for_field(field_name, object, 2112 vmSymbols::string_signature()); 2113 oop string = object->obj_field(offset); 2114 if (string == NULL) { 2115 return NULL; 2116 } 2117 const char* ret = java_lang_String::as_utf8_string(string); 2118 return ret; 2119 } 2120 2121 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 2122 int offset = 2123 offset_for_field(field_name, object, vmSymbols::bool_signature()); 2124 bool ret = (object->bool_field(offset) == JNI_TRUE); 2125 return ret; 2126 } 2127 2128 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 2129 ResourceMark rm; 2130 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 2131 2132 // one by one registration natives for exception catching 2133 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 2134 CHECK_JNI_EXCEPTION(env); 2135 for (int i = 0, n = method_count; i < n; ++i) { 2136 // Skip dummy entries 2137 if (method_array[i].fnPtr == NULL) continue; 2138 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 2139 jthrowable throwable_obj = env->ExceptionOccurred(); 2140 if (throwable_obj != NULL) { 2141 env->ExceptionClear(); 2142 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 2143 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 2144 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 2145 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 2146 method_array[i].name, method_array[i].signature); 2147 } 2148 } else { 2149 // Registration failed unexpectedly. 2150 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 2151 method_array[i].name, method_array[i].signature); 2152 env->UnregisterNatives(wbclass); 2153 break; 2154 } 2155 } 2156 } 2157 } 2158 2159 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 2160 // can't be in VM when we call JNI 2161 ThreadToNativeFromVM ttnfv(thread); 2162 const char* dir = env->GetStringUTFChars(compDirect, NULL); 2163 CHECK_JNI_EXCEPTION_(env, 0); 2164 int ret; 2165 { 2166 ThreadInVMfromNative ttvfn(thread); // back to VM 2167 ret = DirectivesParser::parse_string(dir, tty); 2168 } 2169 env->ReleaseStringUTFChars(compDirect, dir); 2170 // -1 for error parsing directive. Return 0 as number of directives added. 2171 if (ret == -1) { 2172 ret = 0; 2173 } 2174 return (jint) ret; 2175 WB_END 2176 2177 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 2178 DirectivesStack::pop(count); 2179 WB_END 2180 2181 // Checks that the library libfile has the noexecstack bit set. 2182 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 2183 jboolean ret = false; 2184 #ifdef LINUX 2185 // Can't be in VM when we call JNI. 2186 ThreadToNativeFromVM ttnfv(thread); 2187 const char* lf = env->GetStringUTFChars(libfile, NULL); 2188 CHECK_JNI_EXCEPTION_(env, 0); 2189 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 2190 env->ReleaseStringUTFChars(libfile, lf); 2191 #endif 2192 return ret; 2193 WB_END 2194 2195 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 2196 LINUX_ONLY(return OSContainer::is_containerized();) 2197 return false; 2198 WB_END 2199 2200 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env, 2201 jobject o, 2202 jstring proc_cgroups, 2203 jstring proc_self_cgroup, 2204 jstring proc_self_mountinfo)) 2205 jint ret = 0; 2206 #ifdef LINUX 2207 ThreadToNativeFromVM ttnfv(thread); 2208 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, NULL); 2209 CHECK_JNI_EXCEPTION_(env, 0); 2210 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, NULL); 2211 CHECK_JNI_EXCEPTION_(env, 0); 2212 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, NULL); 2213 CHECK_JNI_EXCEPTION_(env, 0); 2214 u1 cg_type_flags = 0; 2215 // This sets cg_type_flags 2216 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags); 2217 ret = (jint)cg_type_flags; 2218 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups); 2219 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup); 2220 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo); 2221 #endif 2222 return ret; 2223 WB_END 2224 2225 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 2226 os::print_os_info(tty); 2227 WB_END 2228 2229 // Elf decoder 2230 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 2231 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 2232 ElfFile::_do_not_cache_elf_section = true; 2233 #endif 2234 WB_END 2235 2236 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o)) 2237 return (jlong) ResolvedMethodTable::items_count(); 2238 WB_END 2239 2240 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o)) 2241 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count(); 2242 WB_END 2243 2244 WB_ENTRY(jint, WB_AotLibrariesCount(JNIEnv* env, jobject o)) 2245 jint result = 0; 2246 #if INCLUDE_AOT 2247 result = (jint) AOTLoader::heaps_count(); 2248 #endif 2249 return result; 2250 WB_END 2251 2252 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror)) 2253 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror)); 2254 // Return size in bytes. 2255 return k->size() * wordSize; 2256 WB_END 2257 2258 #define CC (char*) 2259 2260 static JNINativeMethod methods[] = { 2261 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 2262 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 2263 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 2264 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 2265 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 2266 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 2267 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 2268 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 2269 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 2270 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses }, 2271 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount }, 2272 {CC"parseCommandLine0", 2273 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 2274 (void*) &WB_ParseCommandLine 2275 }, 2276 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2277 (void*)&WB_AddToBootstrapClassLoaderSearch}, 2278 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2279 (void*)&WB_AddToSystemClassLoaderSearch}, 2280 {CC"getCompressedOopsMaxHeapSize", CC"()J", 2281 (void*)&WB_GetCompressedOopsMaxHeapSize}, 2282 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 2283 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 2284 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 2285 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 2286 #if INCLUDE_CDS 2287 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName}, 2288 #endif 2289 #if INCLUDE_G1GC 2290 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 2291 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 2292 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 2293 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 2294 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 2295 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 2296 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 2297 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 2298 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 2299 (void*)&WB_G1AuxiliaryMemoryUsage }, 2300 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount }, 2301 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds }, 2302 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 2303 #endif // INCLUDE_G1GC 2304 #if INCLUDE_G1GC || INCLUDE_PARALLELGC 2305 {CC"dramReservedStart", CC"()J", (void*)&WB_DramReservedStart }, 2306 {CC"dramReservedEnd", CC"()J", (void*)&WB_DramReservedEnd }, 2307 {CC"nvdimmReservedStart", CC"()J", (void*)&WB_NvdimmReservedStart }, 2308 {CC"nvdimmReservedEnd", CC"()J", (void*)&WB_NvdimmReservedEnd }, 2309 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC 2310 #if INCLUDE_PARALLELGC 2311 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 2312 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 2313 #endif 2314 #if INCLUDE_NMT 2315 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 2316 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 2317 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType}, 2318 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 2319 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 2320 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 2321 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 2322 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 2323 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 2324 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 2325 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 2326 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena }, 2327 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena }, 2328 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc }, 2329 #endif // INCLUDE_NMT 2330 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 2331 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 2332 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 2333 (void*)&WB_DeoptimizeMethod }, 2334 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 2335 (void*)&WB_IsMethodCompiled }, 2336 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 2337 (void*)&WB_IsMethodCompilable}, 2338 {CC"isMethodQueuedForCompilation0", 2339 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 2340 {CC"isIntrinsicAvailable0", 2341 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2342 (void*)&WB_IsIntrinsicAvailable}, 2343 {CC"makeMethodNotCompilable0", 2344 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2345 {CC"testSetDontInlineMethod0", 2346 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2347 {CC"getMethodCompilationLevel0", 2348 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2349 {CC"getMethodEntryBci0", 2350 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2351 {CC"getCompileQueueSize", 2352 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2353 {CC"testSetForceInlineMethod0", 2354 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2355 {CC"enqueueMethodForCompilation0", 2356 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2357 {CC"enqueueInitializerForCompilation0", 2358 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2359 {CC"markMethodProfiled", 2360 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled}, 2361 {CC"clearMethodState0", 2362 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2363 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2364 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2365 {CC"matchesMethod", 2366 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2367 (void*)&WB_MatchesMethod}, 2368 {CC"matchesInline", 2369 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2370 (void*)&WB_MatchesInline}, 2371 {CC"shouldPrintAssembly", 2372 CC"(Ljava/lang/reflect/Executable;I)Z", 2373 (void*)&WB_ShouldPrintAssembly}, 2374 2375 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2376 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2377 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2378 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2379 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2380 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2381 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2382 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2383 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2384 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2385 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2386 (void*)&WB_SetStringVMFlag}, 2387 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2388 (void*)&WB_GetBooleanVMFlag}, 2389 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2390 (void*)&WB_GetIntVMFlag}, 2391 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2392 (void*)&WB_GetUintVMFlag}, 2393 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2394 (void*)&WB_GetIntxVMFlag}, 2395 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2396 (void*)&WB_GetUintxVMFlag}, 2397 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2398 (void*)&WB_GetUint64VMFlag}, 2399 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2400 (void*)&WB_GetSizeTVMFlag}, 2401 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2402 (void*)&WB_GetDoubleVMFlag}, 2403 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2404 (void*)&WB_GetStringVMFlag}, 2405 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2406 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2407 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2408 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2409 {CC"allocateMetaspace", 2410 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2411 {CC"freeMetaspace", 2412 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 2413 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2414 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2415 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment }, 2416 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2417 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2418 (void*)&WB_GetNMethod }, 2419 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 2420 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2421 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2422 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2423 {CC"getCompilationActivityMode", 2424 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2425 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2426 (void*)&WB_GetMethodData }, 2427 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2428 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2429 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2430 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2431 (void*)&WB_DefineModule }, 2432 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2433 (void*)&WB_AddModuleExports }, 2434 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2435 (void*)&WB_AddReadsModule }, 2436 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2437 (void*)&WB_AddModuleExportsToAllUnnamed }, 2438 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2439 (void*)&WB_AddModuleExportsToAll }, 2440 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls }, 2441 {CC"assertSpecialLock", CC"(ZZ)V", (void*)&WB_AssertSpecialLock }, 2442 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2443 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2444 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2445 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 2446 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 2447 {CC"remapInstructionOperandFromCPCache0", 2448 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 2449 {CC"encodeConstantPoolIndyIndex0", 2450 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 2451 {CC"getMethodBooleanOption", 2452 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2453 (void*)&WB_GetMethodBooleaneOption}, 2454 {CC"getMethodIntxOption", 2455 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2456 (void*)&WB_GetMethodIntxOption}, 2457 {CC"getMethodUintxOption", 2458 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2459 (void*)&WB_GetMethodUintxOption}, 2460 {CC"getMethodDoubleOption", 2461 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2462 (void*)&WB_GetMethodDoubleOption}, 2463 {CC"getMethodStringOption", 2464 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2465 (void*)&WB_GetMethodStringOption}, 2466 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;", 2467 (void*)&WB_GetDefaultArchivePath}, 2468 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled}, 2469 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 2470 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2471 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored }, 2472 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 2473 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass}, 2474 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2475 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild }, 2476 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild }, 2477 {CC"isC2OrJVMCIIncludedInVmBuild", CC"()Z", (void*)&WB_isC2OrJVMCIIncludedInVmBuild }, 2478 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported }, 2479 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed }, 2480 2481 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2482 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2483 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2484 (void*)&WB_AddCompilerDirective }, 2485 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2486 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported}, 2487 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected}, 2488 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically}, 2489 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints}, 2490 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl}, 2491 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl}, 2492 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle}, 2493 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z", 2494 (void*)&WB_ConcurrentGCRunTo}, 2495 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2496 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2497 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2498 {CC"validateCgroup", 2499 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I", 2500 (void*)&WB_ValidateCgroup }, 2501 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2502 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 2503 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount }, 2504 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount }, 2505 {CC"aotLibrariesCount", CC"()I", (void*)&WB_AotLibrariesCount }, 2506 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize}, 2507 }; 2508 2509 2510 #undef CC 2511 2512 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2513 { 2514 if (WhiteBoxAPI) { 2515 // Make sure that wbclass is loaded by the null classloader 2516 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass()); 2517 Handle loader(THREAD, ik->class_loader()); 2518 if (loader.is_null()) { 2519 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2520 WhiteBox::set_used(); 2521 } 2522 } 2523 } 2524 JVM_END