1 /* 2 * Copyright (c) 2012, 2022, 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 #include <new> 27 #include "cds.h" 28 #include "cds/cdsConstants.hpp" 29 #include "cds/filemap.hpp" 30 #include "cds/heapShared.inline.hpp" 31 #include "cds/metaspaceShared.hpp" 32 #include "classfile/classLoaderDataGraph.hpp" 33 #include "classfile/javaClasses.inline.hpp" 34 #include "classfile/modules.hpp" 35 #include "classfile/protectionDomainCache.hpp" 36 #include "classfile/stringTable.hpp" 37 #include "classfile/symbolTable.hpp" 38 #include "classfile/systemDictionary.hpp" 39 #include "classfile/vmSymbols.hpp" 40 #include "code/codeCache.hpp" 41 #include "compiler/compilationPolicy.hpp" 42 #include "compiler/directivesParser.hpp" 43 #include "compiler/methodMatcher.hpp" 44 #include "gc/shared/concurrentGCBreakpoints.hpp" 45 #include "gc/shared/gcConfig.hpp" 46 #include "gc/shared/gcLocker.inline.hpp" 47 #include "gc/shared/genArguments.hpp" 48 #include "gc/shared/genCollectedHeap.hpp" 49 #include "jvmtifiles/jvmtiEnv.hpp" 50 #include "logging/log.hpp" 51 #include "memory/iterator.hpp" 52 #include "memory/metadataFactory.hpp" 53 #include "memory/iterator.inline.hpp" 54 #include "memory/metaspace/testHelpers.hpp" 55 #include "memory/metaspaceUtils.hpp" 56 #include "memory/oopFactory.hpp" 57 #include "memory/resourceArea.hpp" 58 #include "memory/universe.hpp" 59 #include "oops/array.hpp" 60 #include "oops/compressedOops.hpp" 61 #include "oops/compressedOops.inline.hpp" 62 #include "oops/constantPool.inline.hpp" 63 #include "oops/klass.inline.hpp" 64 #include "oops/method.inline.hpp" 65 #include "oops/objArrayKlass.hpp" 66 #include "oops/objArrayOop.inline.hpp" 67 #include "oops/oop.inline.hpp" 68 #include "oops/objArrayOop.inline.hpp" 69 #include "oops/typeArrayOop.inline.hpp" 70 #include "prims/resolvedMethodTable.hpp" 71 #include "prims/wbtestmethods/parserTests.hpp" 72 #include "prims/whitebox.inline.hpp" 73 #include "runtime/arguments.hpp" 74 #include "runtime/atomic.hpp" 75 #include "runtime/deoptimization.hpp" 76 #include "runtime/fieldDescriptor.inline.hpp" 77 #include "runtime/flags/jvmFlag.hpp" 78 #include "runtime/flags/jvmFlagAccess.hpp" 79 #include "runtime/frame.inline.hpp" 80 #include "runtime/handles.inline.hpp" 81 #include "runtime/handshake.hpp" 82 #include "runtime/interfaceSupport.inline.hpp" 83 #include "runtime/javaCalls.hpp" 84 #include "runtime/jniHandles.inline.hpp" 85 #include "runtime/os.hpp" 86 #include "runtime/stackFrameStream.inline.hpp" 87 #include "runtime/sweeper.hpp" 88 #include "runtime/synchronizer.hpp" 89 #include "runtime/thread.hpp" 90 #include "runtime/threadSMR.hpp" 91 #include "runtime/vframe.hpp" 92 #include "runtime/vm_version.hpp" 93 #include "services/mallocSiteTable.hpp" 94 #include "services/memoryService.hpp" 95 #include "services/memTracker.hpp" 96 #include "utilities/align.hpp" 97 #include "utilities/debug.hpp" 98 #include "utilities/elfFile.hpp" 99 #include "utilities/exceptions.hpp" 100 #include "utilities/macros.hpp" 101 #include "utilities/nativeCallStack.hpp" 102 #include "utilities/ostream.hpp" 103 #if INCLUDE_G1GC 104 #include "gc/g1/g1Arguments.hpp" 105 #include "gc/g1/g1CollectedHeap.inline.hpp" 106 #include "gc/g1/g1ConcurrentMark.hpp" 107 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp" 108 #include "gc/g1/heapRegionManager.hpp" 109 #include "gc/g1/heapRegionRemSet.inline.hpp" 110 #endif // INCLUDE_G1GC 111 #if INCLUDE_PARALLELGC 112 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 113 #endif // INCLUDE_PARALLELGC 114 #if INCLUDE_JVMCI 115 #include "jvmci/jvmciEnv.hpp" 116 #include "jvmci/jvmciRuntime.hpp" 117 #endif 118 119 #ifdef LINUX 120 #include "osContainer_linux.hpp" 121 #include "cgroupSubsystem_linux.hpp" 122 #endif 123 124 #define SIZE_T_MAX_VALUE ((size_t) -1) 125 126 #define CHECK_JNI_EXCEPTION_(env, value) \ 127 do { \ 128 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 129 THREAD->clear_pending_jni_exception_check(); \ 130 if (HAS_PENDING_EXCEPTION) { \ 131 return(value); \ 132 } \ 133 } while (0) 134 135 #define CHECK_JNI_EXCEPTION(env) \ 136 do { \ 137 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 138 THREAD->clear_pending_jni_exception_check(); \ 139 if (HAS_PENDING_EXCEPTION) { \ 140 return; \ 141 } \ 142 } while (0) 143 144 bool WhiteBox::_used = false; 145 volatile bool WhiteBox::compilation_locked = false; 146 147 class VM_WhiteBoxOperation : public VM_Operation { 148 public: 149 VM_WhiteBoxOperation() { } 150 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 151 bool allow_nested_vm_operations() const { return true; } 152 }; 153 154 155 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 156 return (jlong)(void*)JNIHandles::resolve(obj); 157 WB_END 158 159 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 160 return heapOopSize; 161 WB_END 162 163 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 164 return os::vm_page_size(); 165 WB_END 166 167 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 168 return os::vm_allocation_granularity(); 169 WB_END 170 171 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 172 return os::large_page_size(); 173 WB_END 174 175 class WBIsKlassAliveClosure : public LockedClassesDo { 176 Symbol* _name; 177 int _count; 178 public: 179 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {} 180 181 void do_klass(Klass* k) { 182 Symbol* ksym = k->name(); 183 if (ksym->fast_compare(_name) == 0) { 184 _count++; 185 } else if (k->is_instance_klass()) { 186 // Need special handling for hidden classes because the JVM 187 // appends "+<hex-address>" to hidden class names. 188 InstanceKlass *ik = InstanceKlass::cast(k); 189 if (ik->is_hidden()) { 190 ResourceMark rm; 191 char* k_name = ksym->as_C_string(); 192 // Find the first '+' char and truncate the string at that point. 193 // NOTE: This will not work correctly if the original hidden class 194 // name contains a '+'. 195 char* plus_char = strchr(k_name, '+'); 196 if (plus_char != NULL) { 197 *plus_char = 0; 198 char* c_name = _name->as_C_string(); 199 if (strcmp(c_name, k_name) == 0) { 200 _count++; 201 } 202 } 203 } 204 } 205 } 206 207 int count() const { 208 return _count; 209 } 210 }; 211 212 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name)) 213 oop h_name = JNIHandles::resolve(name); 214 if (h_name == NULL) return false; 215 Symbol* sym = java_lang_String::as_symbol(h_name); 216 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 217 218 WBIsKlassAliveClosure closure(sym); 219 ClassLoaderDataGraph::classes_do(&closure); 220 221 // Return the count of alive classes with this name. 222 return closure.count(); 223 WB_END 224 225 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name)) 226 oop h_name = JNIHandles::resolve(name); 227 if (h_name == NULL) return false; 228 Symbol* sym = java_lang_String::as_symbol(h_name); 229 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 230 return (jint)sym->refcount(); 231 WB_END 232 233 234 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 235 #if INCLUDE_JVMTI 236 ResourceMark rm; 237 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 238 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 239 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 240 assert(err == JVMTI_ERROR_NONE, "must not fail"); 241 #endif 242 } 243 WB_END 244 245 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 246 #if INCLUDE_JVMTI 247 ResourceMark rm; 248 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 249 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 250 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 251 assert(err == JVMTI_ERROR_NONE, "must not fail"); 252 #endif 253 } 254 WB_END 255 256 257 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 258 return (jlong)Arguments::max_heap_for_compressed_oops(); 259 } 260 WB_END 261 262 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 263 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " " 264 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 265 MinHeapSize, 266 InitialHeapSize, 267 MaxHeapSize, 268 SpaceAlignment, 269 HeapAlignment); 270 } 271 WB_END 272 273 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 274 size_t granularity = os::vm_allocation_granularity(); 275 ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size()); 276 VirtualSpace vs; 277 vs.initialize(rhs, 50 * granularity); 278 279 // Check if constraints are complied 280 if (!( UseCompressedOops && rhs.base() != NULL && 281 CompressedOops::base() != NULL && 282 CompressedOops::use_implicit_null_checks() )) { 283 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 284 "\tUseCompressedOops is %d\n" 285 "\trhs.base() is " PTR_FORMAT "\n" 286 "\tCompressedOops::base() is " PTR_FORMAT "\n" 287 "\tCompressedOops::use_implicit_null_checks() is %d", 288 UseCompressedOops, 289 p2i(rhs.base()), 290 p2i(CompressedOops::base()), 291 CompressedOops::use_implicit_null_checks()); 292 return; 293 } 294 tty->print_cr("Reading from no access area... "); 295 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 296 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 297 WB_END 298 299 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 300 size_t magnitude, size_t iterations) { 301 size_t granularity = os::vm_allocation_granularity(); 302 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size()); 303 VirtualSpace vs; 304 if (!vs.initialize(rhs, 0)) { 305 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 306 return 3; 307 } 308 309 int seed = os::random(); 310 tty->print_cr("Random seed is %d", seed); 311 312 for (size_t i = 0; i < iterations; i++) { 313 314 // Whether we will shrink or grow 315 bool shrink = os::random() % 2L == 0; 316 317 // Get random delta to resize virtual space 318 size_t delta = (size_t)os::random() % magnitude; 319 320 // If we are about to shrink virtual space below zero, then expand instead 321 if (shrink && vs.committed_size() < delta) { 322 shrink = false; 323 } 324 325 // Resizing by delta 326 if (shrink) { 327 vs.shrink_by(delta); 328 } else { 329 // If expanding fails expand_by will silently return false 330 vs.expand_by(delta, true); 331 } 332 } 333 return 0; 334 } 335 336 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 337 jlong reserved_space_size, jlong magnitude, jlong iterations)) 338 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 339 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 340 iterations); 341 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 342 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 343 return 1; 344 } 345 346 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 347 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 348 if (sizeof(size_t) < sizeof(jlong)) { 349 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; 350 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 351 || iterations > size_t_max_value) { 352 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 353 return 2; 354 } 355 } 356 357 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 358 (size_t) magnitude, (size_t) iterations); 359 WB_END 360 361 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name)) 362 return GCConfig::is_gc_supported((CollectedHeap::Name)name); 363 WB_END 364 365 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name)) 366 #if INCLUDE_JVMCI 367 if (EnableJVMCI) { 368 JVMCIEnv jvmciEnv(thread, env, __FILE__, __LINE__); 369 return jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name); 370 } 371 #endif 372 return false; 373 WB_END 374 375 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name)) 376 return GCConfig::is_gc_selected((CollectedHeap::Name)name); 377 WB_END 378 379 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o)) 380 return GCConfig::is_gc_selected_ergonomically(); 381 WB_END 382 383 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 384 oop p = JNIHandles::resolve(obj); 385 #if INCLUDE_G1GC 386 if (UseG1GC) { 387 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 388 const HeapRegion* hr = g1h->heap_region_containing(p); 389 if (hr == NULL) { 390 return false; 391 } 392 return !(hr->is_young()); 393 } 394 #endif 395 #if INCLUDE_PARALLELGC 396 if (UseParallelGC) { 397 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 398 return !psh->is_in_young(p); 399 } 400 #endif 401 #if INCLUDE_ZGC 402 if (UseZGC) { 403 return Universe::heap()->is_in(p); 404 } 405 #endif 406 #if INCLUDE_SHENANDOAHGC 407 if (UseShenandoahGC) { 408 return Universe::heap()->is_in(p); 409 } 410 #endif 411 GenCollectedHeap* gch = GenCollectedHeap::heap(); 412 return !gch->is_in_young(p); 413 WB_END 414 415 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 416 oop p = JNIHandles::resolve(obj); 417 return p->size() * HeapWordSize; 418 WB_END 419 420 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 421 return (jlong)SpaceAlignment; 422 WB_END 423 424 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 425 return (jlong)HeapAlignment; 426 WB_END 427 428 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o)) 429 return Universe::heap()->supports_concurrent_gc_breakpoints(); 430 WB_END 431 432 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o)) 433 ConcurrentGCBreakpoints::acquire_control(); 434 WB_END 435 436 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o)) 437 ConcurrentGCBreakpoints::release_control(); 438 WB_END 439 440 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o)) 441 ConcurrentGCBreakpoints::run_to_idle(); 442 WB_END 443 444 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at)) 445 Handle h_name(THREAD, JNIHandles::resolve(at)); 446 ResourceMark rm; 447 const char* c_name = java_lang_String::as_utf8_string(h_name()); 448 return ConcurrentGCBreakpoints::run_to(c_name); 449 WB_END 450 451 #if INCLUDE_G1GC 452 453 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 454 if (UseG1GC) { 455 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 456 oop result = JNIHandles::resolve(obj); 457 const HeapRegion* hr = g1h->heap_region_containing(result); 458 return hr->is_humongous(); 459 } 460 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 461 WB_END 462 463 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 464 if (UseG1GC) { 465 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 466 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 467 return hr->is_humongous(); 468 } 469 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 470 WB_END 471 472 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 473 if (UseG1GC) { 474 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 475 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 476 return hr->is_free(); 477 } 478 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 479 WB_END 480 481 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 482 if (UseG1GC) { 483 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 484 size_t nr = g1h->max_regions(); 485 return (jlong)nr; 486 } 487 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 488 WB_END 489 490 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 491 if (UseG1GC) { 492 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 493 size_t nr = g1h->num_free_regions(); 494 return (jlong)nr; 495 } 496 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 497 WB_END 498 499 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 500 if (UseG1GC) { 501 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 502 return g1h->concurrent_mark()->cm_thread()->in_progress(); 503 } 504 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 505 WB_END 506 507 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o)) 508 if (UseG1GC) { 509 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 510 if (!g1h->concurrent_mark()->cm_thread()->in_progress()) { 511 g1h->collect(GCCause::_wb_conc_mark); 512 return true; 513 } 514 return false; 515 } 516 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled"); 517 WB_END 518 519 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 520 if (UseG1GC) { 521 return (jint)HeapRegion::GrainBytes; 522 } 523 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 524 WB_END 525 526 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o)) 527 if (UseG1GC) { 528 return G1CollectedHeap::heap()->has_uncommittable_regions(); 529 } 530 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled"); 531 WB_END 532 533 #endif // INCLUDE_G1GC 534 535 #if INCLUDE_PARALLELGC 536 537 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 538 if (UseParallelGC) { 539 return GenAlignment; 540 } 541 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 542 WB_END 543 544 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 545 if (UseParallelGC) { 546 return GenAlignment; 547 } 548 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 549 WB_END 550 551 #endif // INCLUDE_PARALLELGC 552 553 #if INCLUDE_G1GC 554 555 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 556 if (UseG1GC) { 557 ResourceMark rm(THREAD); 558 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 559 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 560 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 561 return JNIHandles::make_local(THREAD, h()); 562 } 563 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 564 WB_END 565 566 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o)) 567 if (UseG1GC) { 568 G1NUMA* numa = G1NUMA::numa(); 569 return (jint)numa->num_active_nodes(); 570 } 571 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled"); 572 WB_END 573 574 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o)) 575 if (UseG1GC) { 576 G1NUMA* numa = G1NUMA::numa(); 577 int num_node_ids = (int)numa->num_active_nodes(); 578 const int* node_ids = numa->node_ids(); 579 580 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL); 581 for (int i = 0; i < num_node_ids; i++) { 582 result->int_at_put(i, (jint)node_ids[i]); 583 } 584 return (jintArray) JNIHandles::make_local(THREAD, result); 585 } 586 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled"); 587 WB_END 588 589 class OldRegionsLivenessClosure: public HeapRegionClosure { 590 591 private: 592 const int _liveness; 593 size_t _total_count; 594 size_t _total_memory; 595 size_t _total_memory_to_free; 596 597 public: 598 OldRegionsLivenessClosure(int liveness) : 599 _liveness(liveness), 600 _total_count(0), 601 _total_memory(0), 602 _total_memory_to_free(0) { } 603 604 size_t total_count() { return _total_count; } 605 size_t total_memory() { return _total_memory; } 606 size_t total_memory_to_free() { return _total_memory_to_free; } 607 608 bool do_heap_region(HeapRegion* r) { 609 if (r->is_old()) { 610 size_t prev_live = r->marked_bytes(); 611 size_t live = r->live_bytes(); 612 size_t size = r->used(); 613 size_t reg_size = HeapRegion::GrainBytes; 614 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 615 _total_memory += size; 616 ++_total_count; 617 if (size == reg_size) { 618 // we don't include non-full regions since they are unlikely included in mixed gc 619 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 620 _total_memory_to_free += size - prev_live; 621 } 622 } 623 } 624 return false; 625 } 626 }; 627 628 629 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 630 if (!UseG1GC) { 631 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 632 } 633 if (liveness < 0) { 634 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 635 } 636 637 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 638 OldRegionsLivenessClosure rli(liveness); 639 g1h->heap_region_iterate(&rli); 640 641 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 642 result->long_at_put(0, rli.total_count()); 643 result->long_at_put(1, rli.total_memory()); 644 result->long_at_put(2, rli.total_memory_to_free()); 645 return (jlongArray) JNIHandles::make_local(THREAD, result); 646 WB_END 647 648 #endif // INCLUDE_G1GC 649 650 // Alloc memory using the test memory type so that we can use that to see if 651 // NMT picks it up correctly 652 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 653 jlong addr = 0; 654 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 655 return addr; 656 WB_END 657 658 // Alloc memory with pseudo call stack. The test can create psudo malloc 659 // allocation site to stress the malloc tracking. 660 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 661 address pc = (address)(size_t)pseudo_stack; 662 NativeCallStack stack(&pc, 1); 663 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 664 WB_END 665 666 // Alloc memory with pseudo call stack and specific memory type. 667 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type)) 668 address pc = (address)(size_t)pseudo_stack; 669 NativeCallStack stack(&pc, 1); 670 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack); 671 WB_END 672 673 // Free the memory allocated by NMTAllocTest 674 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 675 os::free((void*)(uintptr_t)mem); 676 WB_END 677 678 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 679 jlong addr = 0; 680 681 addr = (jlong)(uintptr_t)os::reserve_memory(size); 682 MemTracker::record_virtual_memory_type((address)addr, mtTest); 683 684 return addr; 685 WB_END 686 687 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size)) 688 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size); 689 MemTracker::record_virtual_memory_type((address)addr, mtTest); 690 691 return addr; 692 WB_END 693 694 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 695 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 696 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 697 WB_END 698 699 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 700 os::uncommit_memory((char *)(uintptr_t)addr, size); 701 WB_END 702 703 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 704 os::release_memory((char *)(uintptr_t)addr, size); 705 WB_END 706 707 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 708 int hash_size = MallocSiteTable::hash_buckets(); 709 assert(hash_size > 0, "NMT hash_size should be > 0"); 710 return (jint)hash_size; 711 WB_END 712 713 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size)) 714 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size)); 715 return (jlong)arena; 716 WB_END 717 718 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena)) 719 Arena* a = (Arena*)arena; 720 delete a; 721 WB_END 722 723 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size)) 724 Arena* a = (Arena*)arena; 725 a->Amalloc(size_t(size)); 726 WB_END 727 728 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 729 assert(method != NULL, "method should not be null"); 730 ThreadToNativeFromVM ttn(thread); 731 return env->FromReflectedMethod(method); 732 } 733 734 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 735 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 736 private: 737 int _result; 738 const bool _make_not_entrant; 739 public: 740 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 741 _result(0), _make_not_entrant(make_not_entrant) { } 742 int result() const { return _result; } 743 744 void doit() { 745 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 746 if (t->has_last_Java_frame()) { 747 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) { 748 frame* f = fst.current(); 749 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 750 Deoptimization::deoptimize(t, *f); 751 if (_make_not_entrant) { 752 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 753 assert(cm != NULL, "sanity check"); 754 cm->make_not_entrant(); 755 } 756 ++_result; 757 } 758 } 759 } 760 } 761 } 762 }; 763 764 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 765 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 766 VMThread::execute(&op); 767 return op.result(); 768 WB_END 769 770 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth)) 771 bool result = false; 772 if (thread->has_last_Java_frame()) { 773 RegisterMap reg_map(thread); 774 javaVFrame *jvf = thread->last_java_vframe(®_map); 775 for (jint d = 0; d < depth && jvf != NULL; d++) { 776 jvf = jvf->java_sender(); 777 } 778 result = jvf != NULL && jvf->fr().is_deoptimized_frame(); 779 } 780 return result; 781 WB_END 782 783 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 784 CodeCache::mark_all_nmethods_for_deoptimization(); 785 Deoptimization::deoptimize_all_marked(); 786 WB_END 787 788 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 789 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 790 int result = 0; 791 CHECK_JNI_EXCEPTION_(env, result); 792 MutexLocker mu(Compile_lock); 793 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 794 if (is_osr) { 795 result += mh->mark_osr_nmethods(); 796 } else if (mh->code() != NULL) { 797 mh->code()->mark_for_deoptimization(); 798 ++result; 799 } 800 result += CodeCache::mark_for_deoptimization(mh()); 801 if (result > 0) { 802 Deoptimization::deoptimize_all_marked(); 803 } 804 return result; 805 WB_END 806 807 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 808 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 809 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 810 MutexLocker mu(Compile_lock); 811 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 812 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 813 if (code == NULL) { 814 return JNI_FALSE; 815 } 816 return (code->is_alive() && !code->is_marked_for_deoptimization()); 817 WB_END 818 819 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) { 820 if (comp == NULL) { 821 return true; 822 } 823 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 824 if (directive->ExcludeOption) { 825 return true; 826 } 827 return false; 828 } 829 830 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) { 831 if (is_osr) { 832 return CompilationPolicy::can_be_osr_compiled(mh, level); 833 } else { 834 return CompilationPolicy::can_be_compiled(mh, level); 835 } 836 } 837 838 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 839 if (method == NULL || comp_level > CompilationPolicy::highest_compile_level()) { 840 return false; 841 } 842 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 843 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 844 MutexLocker mu(Compile_lock); 845 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 846 847 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by 848 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive 849 // to exclude a compilation of 'method'. 850 if (comp_level == CompLevel_any) { 851 // Both compilers could have ExcludeOption set. Check all combinations. 852 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh); 853 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh); 854 if (excluded_c1 && excluded_c2) { 855 // Compilation of 'method' excluded by both compilers. 856 return false; 857 } 858 859 if (excluded_c1) { 860 // C1 only has ExcludeOption set: Check if compilable with C2. 861 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization); 862 } else if (excluded_c2) { 863 // C2 only has ExcludeOption set: Check if compilable with C1. 864 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple); 865 } 866 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) { 867 // Compilation of 'method' excluded by compiler used for 'comp_level'. 868 return false; 869 } 870 871 return can_be_compiled_at_level(mh, is_osr, (int)comp_level); 872 WB_END 873 874 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 875 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 876 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 877 MutexLocker mu(Compile_lock); 878 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 879 return mh->queued_for_compilation(); 880 WB_END 881 882 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 883 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) { 884 return false; // Intrinsic is not available on a non-existent compilation level. 885 } 886 jmethodID method_id, compilation_context_id; 887 method_id = reflected_method_to_jmid(thread, env, method); 888 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 889 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 890 891 DirectiveSet* directive; 892 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 893 assert(comp != NULL, "compiler not available"); 894 if (compilation_context != NULL) { 895 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 896 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 897 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 898 directive = DirectivesStack::getMatchingDirective(cch, comp); 899 } else { 900 // Calling with NULL matches default directive 901 directive = DirectivesStack::getDefaultDirective(comp); 902 } 903 bool result = comp->is_intrinsic_available(mh, directive); 904 DirectivesStack::release(directive); 905 return result; 906 WB_END 907 908 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 909 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 910 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 911 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 912 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 913 return (code != NULL ? code->comp_level() : CompLevel_none); 914 WB_END 915 916 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 917 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 918 CHECK_JNI_EXCEPTION(env); 919 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 920 if (is_osr) { 921 mh->set_not_osr_compilable("WhiteBox", comp_level); 922 } else { 923 mh->set_not_compilable("WhiteBox", comp_level); 924 } 925 WB_END 926 927 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method)) 928 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 929 CHECK_JNI_EXCEPTION_(env, 0); 930 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 931 uint cnt = 0; 932 MethodData* mdo = mh->method_data(); 933 if (mdo != NULL) { 934 cnt = mdo->decompile_count(); 935 } 936 return cnt; 937 WB_END 938 939 // Get the trap count of a method for a specific reason. If the trap count for 940 // that reason did overflow, this includes the overflow trap count of the method. 941 // If 'reason' is NULL, the sum of the traps for all reasons will be returned. 942 // This number includes the overflow trap count if the trap count for any reason 943 // did overflow. 944 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj)) 945 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 946 CHECK_JNI_EXCEPTION_(env, 0); 947 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 948 uint cnt = 0; 949 MethodData* mdo = mh->method_data(); 950 if (mdo != NULL) { 951 ResourceMark rm(THREAD); 952 char* reason_str = (reason_obj == NULL) ? 953 NULL : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj)); 954 bool overflow = false; 955 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) { 956 if (reason_str != NULL && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) { 957 cnt = mdo->trap_count(reason); 958 // Count in the overflow trap count on overflow 959 if (cnt == (uint)-1) { 960 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count(); 961 } 962 break; 963 } else if (reason_str == NULL) { 964 uint c = mdo->trap_count(reason); 965 if (c == (uint)-1) { 966 c = mdo->trap_count_limit(); 967 if (!overflow) { 968 // Count overflow trap count just once 969 overflow = true; 970 c += mdo->overflow_trap_count(); 971 } 972 } 973 cnt += c; 974 } 975 } 976 } 977 return cnt; 978 WB_END 979 980 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj)) 981 if (reason_obj == NULL && action_obj == NULL) { 982 return Deoptimization::total_deoptimization_count(); 983 } 984 ResourceMark rm(THREAD); 985 const char *reason_str = (reason_obj == NULL) ? 986 NULL : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj)); 987 const char *action_str = (action_obj == NULL) ? 988 NULL : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj)); 989 990 return Deoptimization::deoptimization_count(reason_str, action_str); 991 WB_END 992 993 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 994 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 995 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 996 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 997 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 998 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 999 WB_END 1000 1001 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1002 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1003 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1004 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1005 bool result = mh->dont_inline(); 1006 mh->set_dont_inline(value == JNI_TRUE); 1007 return result; 1008 WB_END 1009 1010 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 1011 if (comp_level == CompLevel_any) { 1012 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 1013 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 1014 } else { 1015 return CompileBroker::queue_size(comp_level); 1016 } 1017 WB_END 1018 1019 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1020 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1021 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1022 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1023 bool result = mh->force_inline(); 1024 mh->set_force_inline(value == JNI_TRUE); 1025 return result; 1026 WB_END 1027 1028 #ifdef LINUX 1029 bool WhiteBox::validate_cgroup(const char* proc_cgroups, 1030 const char* proc_self_cgroup, 1031 const char* proc_self_mountinfo, 1032 u1* cg_flags) { 1033 CgroupInfo cg_infos[CG_INFO_LENGTH]; 1034 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups, 1035 proc_self_cgroup, 1036 proc_self_mountinfo, cg_flags); 1037 } 1038 #endif 1039 1040 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) { 1041 // Screen for unavailable/bad comp level or null method 1042 AbstractCompiler* comp = CompileBroker::compiler(comp_level); 1043 if (method == NULL) { 1044 tty->print_cr("WB error: request to compile NULL method"); 1045 return false; 1046 } 1047 if (comp_level > CompilationPolicy::highest_compile_level()) { 1048 tty->print_cr("WB error: invalid compilation level %d", comp_level); 1049 return false; 1050 } 1051 if (comp == NULL) { 1052 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level); 1053 return false; 1054 } 1055 1056 // Check if compilation is blocking 1057 methodHandle mh(THREAD, method); 1058 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 1059 bool is_blocking = !directive->BackgroundCompilationOption; 1060 DirectivesStack::release(directive); 1061 1062 // Compile method and check result 1063 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false); 1064 MutexLocker mu(THREAD, Compile_lock); 1065 bool is_queued = mh->queued_for_compilation(); 1066 if ((!is_blocking && is_queued) || nm != NULL) { 1067 return true; 1068 } 1069 // Check code again because compilation may be finished before Compile_lock is acquired. 1070 if (bci == InvocationEntryBci) { 1071 CompiledMethod* code = mh->code(); 1072 if (code != NULL && code->as_nmethod_or_null() != NULL) { 1073 return true; 1074 } 1075 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != NULL) { 1076 return true; 1077 } 1078 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level); 1079 mh->print_short_name(tty); 1080 tty->cr(); 1081 if (is_blocking && is_queued) { 1082 tty->print_cr("WB error: blocking compilation is still in queue!"); 1083 } 1084 return false; 1085 } 1086 1087 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 1088 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1089 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1090 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 1091 WB_END 1092 1093 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 1094 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1095 Method* clinit = ik->class_initializer(); 1096 if (clinit == NULL || clinit->method_holder()->is_not_initialized()) { 1097 return false; 1098 } 1099 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD); 1100 WB_END 1101 1102 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 1103 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1104 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1105 1106 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1107 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 1108 bool result = directive->PrintAssemblyOption; 1109 DirectivesStack::release(directive); 1110 1111 return result; 1112 WB_END 1113 1114 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1115 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1116 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1117 1118 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1119 1120 ResourceMark rm(THREAD); 1121 const char* error_msg = NULL; 1122 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1123 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 1124 1125 if (m == NULL) { 1126 assert(error_msg != NULL, "Always have an error message"); 1127 tty->print_cr("Got error: %s", error_msg); 1128 return -1; // Pattern failed 1129 } 1130 1131 // Pattern works - now check if it matches 1132 int result; 1133 if (m->match(mh, InlineMatcher::force_inline)) { 1134 result = 2; // Force inline match 1135 } else if (m->match(mh, InlineMatcher::dont_inline)) { 1136 result = 1; // Dont inline match 1137 } else { 1138 result = 0; // No match 1139 } 1140 delete m; 1141 return result; 1142 WB_END 1143 1144 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1145 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1146 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1147 1148 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1149 1150 ResourceMark rm; 1151 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1152 1153 const char* error_msg = NULL; 1154 1155 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false); 1156 if (m == NULL) { 1157 assert(error_msg != NULL, "Must have error_msg"); 1158 tty->print_cr("Got error: %s", error_msg); 1159 return -1; 1160 } 1161 1162 // Pattern works - now check if it matches 1163 int result = m->matches(mh); 1164 delete m; 1165 assert(result == 0 || result == 1, "Result out of range"); 1166 return result; 1167 WB_END 1168 1169 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method)) 1170 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1171 CHECK_JNI_EXCEPTION(env); 1172 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1173 1174 MethodData* mdo = mh->method_data(); 1175 if (mdo == NULL) { 1176 Method::build_interpreter_method_data(mh, CHECK_AND_CLEAR); 1177 mdo = mh->method_data(); 1178 } 1179 mdo->init(); 1180 InvocationCounter* icnt = mdo->invocation_counter(); 1181 InvocationCounter* bcnt = mdo->backedge_counter(); 1182 // set i-counter according to CompilationPolicy::is_method_profiled 1183 icnt->set(Tier4MinInvocationThreshold); 1184 bcnt->set(Tier4CompileThreshold); 1185 WB_END 1186 1187 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 1188 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1189 CHECK_JNI_EXCEPTION(env); 1190 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1191 MutexLocker mu(THREAD, Compile_lock); 1192 MethodData* mdo = mh->method_data(); 1193 MethodCounters* mcs = mh->method_counters(); 1194 1195 if (mdo != NULL) { 1196 mdo->init(); 1197 ResourceMark rm(THREAD); 1198 int arg_count = mdo->method()->size_of_parameters(); 1199 for (int i = 0; i < arg_count; i++) { 1200 mdo->set_arg_modified(i, 0); 1201 } 1202 MutexLocker mu(THREAD, mdo->extra_data_lock()); 1203 mdo->clean_method_data(/*always_clean*/true); 1204 } 1205 1206 mh->clear_not_c1_compilable(); 1207 mh->clear_not_c2_compilable(); 1208 mh->clear_not_c2_osr_compilable(); 1209 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 1210 if (mcs != NULL) { 1211 mcs->clear_counters(); 1212 } 1213 WB_END 1214 1215 template <typename T, int type_enum> 1216 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) { 1217 if (name == NULL) { 1218 return false; 1219 } 1220 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1221 const char* flag_name = env->GetStringUTFChars(name, NULL); 1222 CHECK_JNI_EXCEPTION_(env, false); 1223 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name); 1224 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value); 1225 env->ReleaseStringUTFChars(name, flag_name); 1226 return (result == JVMFlag::SUCCESS); 1227 } 1228 1229 template <typename T, int type_enum> 1230 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) { 1231 if (name == NULL) { 1232 return false; 1233 } 1234 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1235 const char* flag_name = env->GetStringUTFChars(name, NULL); 1236 CHECK_JNI_EXCEPTION_(env, false); 1237 JVMFlag* flag = JVMFlag::find_flag(flag_name); 1238 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL); 1239 env->ReleaseStringUTFChars(name, flag_name); 1240 return (result == JVMFlag::SUCCESS); 1241 } 1242 1243 template <typename T> 1244 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1245 ResourceMark rm(thread); 1246 jclass clazz = env->FindClass(name->as_C_string()); 1247 CHECK_JNI_EXCEPTION_(env, NULL); 1248 jmethodID methodID = env->GetStaticMethodID(clazz, 1249 vmSymbols::valueOf_name()->as_C_string(), 1250 sig->as_C_string()); 1251 CHECK_JNI_EXCEPTION_(env, NULL); 1252 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1253 CHECK_JNI_EXCEPTION_(env, NULL); 1254 return result; 1255 } 1256 1257 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1258 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1259 } 1260 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1261 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1262 } 1263 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1264 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1265 } 1266 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1267 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1268 }*/ 1269 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1270 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1271 } 1272 1273 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1274 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1275 const char* flag_name = env->GetStringUTFChars(name, NULL); 1276 CHECK_JNI_EXCEPTION_(env, NULL); 1277 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name); 1278 env->ReleaseStringUTFChars(name, flag_name); 1279 return result; 1280 } 1281 1282 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1283 const JVMFlag* flag = getVMFlag(thread, env, name); 1284 return (flag != NULL) && flag->is_constant_in_binary(); 1285 WB_END 1286 1287 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1288 const JVMFlag* flag = getVMFlag(thread, env, name); 1289 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 1290 WB_END 1291 1292 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1293 bool result; 1294 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) { 1295 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1296 return booleanBox(thread, env, result); 1297 } 1298 return NULL; 1299 WB_END 1300 1301 template <typename T, int type_enum> 1302 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) { 1303 T result; 1304 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) { 1305 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1306 return longBox(thread, env, result); 1307 } 1308 return NULL; 1309 } 1310 1311 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1312 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name); 1313 WB_END 1314 1315 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1316 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name); 1317 WB_END 1318 1319 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1320 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name); 1321 WB_END 1322 1323 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1324 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name); 1325 WB_END 1326 1327 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1328 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name); 1329 WB_END 1330 1331 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1332 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name); 1333 WB_END 1334 1335 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1336 double result; 1337 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) { 1338 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1339 return doubleBox(thread, env, result); 1340 } 1341 return NULL; 1342 WB_END 1343 1344 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1345 ccstr ccstrResult; 1346 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) { 1347 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1348 jstring result = env->NewStringUTF(ccstrResult); 1349 CHECK_JNI_EXCEPTION_(env, NULL); 1350 return result; 1351 } 1352 return NULL; 1353 WB_END 1354 1355 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1356 bool result = value == JNI_TRUE ? true : false; 1357 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result); 1358 WB_END 1359 1360 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1361 int result = value; 1362 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result); 1363 WB_END 1364 1365 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1366 uint result = value; 1367 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result); 1368 WB_END 1369 1370 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1371 intx result = value; 1372 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result); 1373 WB_END 1374 1375 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1376 uintx result = value; 1377 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result); 1378 WB_END 1379 1380 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1381 uint64_t result = value; 1382 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result); 1383 WB_END 1384 1385 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1386 size_t result = value; 1387 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result); 1388 WB_END 1389 1390 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1391 double result = value; 1392 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result); 1393 WB_END 1394 1395 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1396 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1397 const char* ccstrValue; 1398 if (value == NULL) { 1399 ccstrValue = NULL; 1400 } 1401 else { 1402 ccstrValue = env->GetStringUTFChars(value, NULL); 1403 CHECK_JNI_EXCEPTION(env); 1404 } 1405 { 1406 ccstr param = ccstrValue; 1407 ThreadInVMfromNative ttvfn(thread); // back to VM 1408 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) { 1409 assert(param == NULL, "old value is freed automatically and not returned"); 1410 } 1411 } 1412 if (value != NULL) { 1413 env->ReleaseStringUTFChars(value, ccstrValue); 1414 } 1415 WB_END 1416 1417 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1418 WhiteBox::compilation_locked = true; 1419 WB_END 1420 1421 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1422 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1423 WhiteBox::compilation_locked = false; 1424 mo.notify_all(); 1425 WB_END 1426 1427 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 1428 // Force a code cache sweep and block until it finished 1429 NMethodSweeper::force_sweep(); 1430 WB_END 1431 1432 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1433 ResourceMark rm(THREAD); 1434 int len; 1435 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1436 return (StringTable::lookup(name, len) != NULL); 1437 WB_END 1438 1439 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1440 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1441 Universe::heap()->collect(GCCause::_wb_full_gc); 1442 #if INCLUDE_G1GC 1443 if (UseG1GC) { 1444 // Needs to be cleared explicitly for G1 1445 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1446 } 1447 #endif // INCLUDE_G1GC 1448 WB_END 1449 1450 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1451 Universe::heap()->collect(GCCause::_wb_young_gc); 1452 WB_END 1453 1454 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1455 // static+volatile in order to force the read to happen 1456 // (not be eliminated by the compiler) 1457 static char c; 1458 static volatile char* p; 1459 1460 p = os::reserve_memory(os::vm_allocation_granularity()); 1461 if (p == NULL) { 1462 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1463 } 1464 1465 c = *p; 1466 WB_END 1467 1468 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1469 const char* features = VM_Version::features_string(); 1470 ThreadToNativeFromVM ttn(thread); 1471 jstring features_string = env->NewStringUTF(features); 1472 1473 CHECK_JNI_EXCEPTION_(env, NULL); 1474 1475 return features_string; 1476 WB_END 1477 1478 int WhiteBox::get_blob_type(const CodeBlob* code) { 1479 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1480 return CodeCache::get_code_heap(code)->code_blob_type(); 1481 } 1482 1483 CodeHeap* WhiteBox::get_code_heap(int blob_type) { 1484 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1485 return CodeCache::get_code_heap(blob_type); 1486 } 1487 1488 struct CodeBlobStub { 1489 CodeBlobStub(const CodeBlob* blob) : 1490 name(os::strdup(blob->name())), 1491 size(blob->size()), 1492 blob_type(WhiteBox::get_blob_type(blob)), 1493 address((jlong) blob) { } 1494 ~CodeBlobStub() { os::free((void*) name); } 1495 const char* const name; 1496 const jint size; 1497 const jint blob_type; 1498 const jlong address; 1499 }; 1500 1501 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1502 ResourceMark rm; 1503 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1504 CHECK_JNI_EXCEPTION_(env, NULL); 1505 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1506 1507 jstring name = env->NewStringUTF(cb->name); 1508 CHECK_JNI_EXCEPTION_(env, NULL); 1509 env->SetObjectArrayElement(result, 0, name); 1510 1511 jobject obj = integerBox(thread, env, cb->size); 1512 CHECK_JNI_EXCEPTION_(env, NULL); 1513 env->SetObjectArrayElement(result, 1, obj); 1514 1515 obj = integerBox(thread, env, cb->blob_type); 1516 CHECK_JNI_EXCEPTION_(env, NULL); 1517 env->SetObjectArrayElement(result, 2, obj); 1518 1519 obj = longBox(thread, env, cb->address); 1520 CHECK_JNI_EXCEPTION_(env, NULL); 1521 env->SetObjectArrayElement(result, 3, obj); 1522 1523 return result; 1524 } 1525 1526 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1527 ResourceMark rm(THREAD); 1528 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1529 CHECK_JNI_EXCEPTION_(env, NULL); 1530 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1531 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1532 jobjectArray result = NULL; 1533 if (code == NULL) { 1534 return result; 1535 } 1536 int comp_level = code->comp_level(); 1537 int insts_size = code->insts_size(); 1538 1539 ThreadToNativeFromVM ttn(thread); 1540 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1541 CHECK_JNI_EXCEPTION_(env, NULL); 1542 result = env->NewObjectArray(5, clazz, NULL); 1543 if (result == NULL) { 1544 return result; 1545 } 1546 1547 CodeBlobStub stub(code); 1548 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1549 CHECK_JNI_EXCEPTION_(env, NULL); 1550 env->SetObjectArrayElement(result, 0, codeBlob); 1551 1552 jobject level = integerBox(thread, env, comp_level); 1553 CHECK_JNI_EXCEPTION_(env, NULL); 1554 env->SetObjectArrayElement(result, 1, level); 1555 1556 jbyteArray insts = env->NewByteArray(insts_size); 1557 CHECK_JNI_EXCEPTION_(env, NULL); 1558 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1559 env->SetObjectArrayElement(result, 2, insts); 1560 1561 jobject id = integerBox(thread, env, code->compile_id()); 1562 CHECK_JNI_EXCEPTION_(env, NULL); 1563 env->SetObjectArrayElement(result, 3, id); 1564 1565 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1566 CHECK_JNI_EXCEPTION_(env, NULL); 1567 env->SetObjectArrayElement(result, 4, entry_point); 1568 1569 return result; 1570 WB_END 1571 1572 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1573 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1574 BufferBlob* blob; 1575 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1576 if (full_size < size) { 1577 full_size += align_up(size - full_size, oopSize); 1578 } 1579 { 1580 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1581 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1582 if (blob != NULL) { 1583 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1584 } 1585 } 1586 // Track memory usage statistic after releasing CodeCache_lock 1587 MemoryService::track_code_cache_memory_usage(); 1588 return blob; 1589 } 1590 1591 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1592 if (size < 0) { 1593 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1594 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1595 } 1596 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1597 WB_END 1598 1599 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1600 if (addr == 0) { 1601 return; 1602 } 1603 BufferBlob::free((BufferBlob*) addr); 1604 WB_END 1605 1606 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1607 ResourceMark rm; 1608 GrowableArray<CodeBlobStub*> blobs; 1609 { 1610 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1611 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1612 if (heap == NULL) { 1613 return NULL; 1614 } 1615 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1616 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1617 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1618 new (stub) CodeBlobStub(cb); 1619 blobs.append(stub); 1620 } 1621 } 1622 ThreadToNativeFromVM ttn(thread); 1623 jobjectArray result = NULL; 1624 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1625 CHECK_JNI_EXCEPTION_(env, NULL); 1626 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1627 CHECK_JNI_EXCEPTION_(env, NULL); 1628 if (result == NULL) { 1629 return result; 1630 } 1631 int i = 0; 1632 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1633 it != blobs.end(); ++it) { 1634 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1635 CHECK_JNI_EXCEPTION_(env, NULL); 1636 env->SetObjectArrayElement(result, i, obj); 1637 CHECK_JNI_EXCEPTION_(env, NULL); 1638 ++i; 1639 } 1640 return result; 1641 WB_END 1642 1643 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1644 return CompileBroker::get_compilation_activity_mode(); 1645 WB_END 1646 1647 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1648 if (addr == 0) { 1649 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1650 "WB_GetCodeBlob: addr is null"); 1651 } 1652 ThreadToNativeFromVM ttn(thread); 1653 CodeBlobStub stub((CodeBlob*) addr); 1654 return codeBlob2objectArray(thread, env, &stub); 1655 WB_END 1656 1657 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1658 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1659 CHECK_JNI_EXCEPTION_(env, 0); 1660 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1661 return (jlong) mh->method_data(); 1662 WB_END 1663 1664 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1665 return (jlong) thread->stack_size(); 1666 WB_END 1667 1668 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1669 return (jlong) thread->stack_overflow_state()->stack_available( 1670 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size(); 1671 WB_END 1672 1673 1674 int WhiteBox::array_bytes_to_length(size_t bytes) { 1675 return Array<u1>::bytes_to_length(bytes); 1676 } 1677 1678 /////////////// 1679 // MetaspaceTestContext and MetaspaceTestArena 1680 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit)) 1681 metaspace::MetaspaceTestContext* context = 1682 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit); 1683 return (jlong)p2i(context); 1684 WB_END 1685 1686 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1687 delete (metaspace::MetaspaceTestContext*) context; 1688 WB_END 1689 1690 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1691 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1692 context0->purge_area(); 1693 WB_END 1694 1695 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1696 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1697 context0->print_on(tty); 1698 WB_END 1699 1700 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1701 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1702 return context0->committed_words(); 1703 WB_END 1704 1705 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1706 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1707 return context0->used_words(); 1708 WB_END 1709 1710 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro)) 1711 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType; 1712 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1713 return (jlong)p2i(context0->create_arena(type)); 1714 WB_END 1715 1716 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena)) 1717 delete (metaspace::MetaspaceTestArena*) arena; 1718 WB_END 1719 1720 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size)) 1721 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena; 1722 MetaWord* p = arena0->allocate((size_t) word_size); 1723 return (jlong)p2i(p); 1724 WB_END 1725 1726 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size)) 1727 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena; 1728 arena0->deallocate((MetaWord*)p, (size_t) word_size); 1729 WB_END 1730 1731 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb)) 1732 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord; 1733 WB_END 1734 1735 ////////////// 1736 1737 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1738 if (size < 0) { 1739 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1740 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1741 } 1742 1743 oop class_loader_oop = JNIHandles::resolve(class_loader); 1744 ClassLoaderData* cld = class_loader_oop != NULL 1745 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1746 : ClassLoaderData::the_null_class_loader_data(); 1747 1748 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1749 1750 return (jlong)(uintptr_t)metadata; 1751 WB_END 1752 1753 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1754 jstring version, jstring location, jobjectArray packages)) 1755 Handle h_module (THREAD, JNIHandles::resolve(module)); 1756 Modules::define_module(h_module, is_open, version, location, packages, CHECK); 1757 WB_END 1758 1759 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1760 Handle h_from_module (THREAD, JNIHandles::resolve(from_module)); 1761 Handle h_to_module (THREAD, JNIHandles::resolve(to_module)); 1762 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK); 1763 WB_END 1764 1765 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1766 Handle h_module (THREAD, JNIHandles::resolve(module)); 1767 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK); 1768 WB_END 1769 1770 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1771 Handle h_module (THREAD, JNIHandles::resolve(module)); 1772 Modules::add_module_exports(h_module, package, Handle(), CHECK); 1773 WB_END 1774 1775 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1776 Handle h_from_module (THREAD, JNIHandles::resolve(from_module)); 1777 Handle h_source_module (THREAD, JNIHandles::resolve(source_module)); 1778 Modules::add_reads_module(h_from_module, h_source_module, CHECK); 1779 WB_END 1780 1781 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1782 if (inc < 0) { 1783 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1784 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1785 } 1786 1787 jlong max_size_t = (jlong) ((size_t) -1); 1788 if (inc > max_size_t) { 1789 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1790 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1791 } 1792 1793 size_t new_cap_until_GC = 0; 1794 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1795 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1796 if (!success) { 1797 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1798 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1799 "due to contention with another thread"); 1800 } 1801 return (jlong) new_cap_until_GC; 1802 WB_END 1803 1804 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1805 return (jlong) MetaspaceGC::capacity_until_GC(); 1806 WB_END 1807 1808 // The function is only valid when CDS is available. 1809 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb)) 1810 #if INCLUDE_CDS 1811 return (jlong)MetaspaceShared::core_region_alignment(); 1812 #else 1813 ShouldNotReachHere(); 1814 return 0L; 1815 #endif 1816 WB_END 1817 1818 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1819 oop obj_oop = JNIHandles::resolve(obj); 1820 return (jboolean) obj_oop->mark().has_monitor(); 1821 WB_END 1822 1823 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb)) 1824 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors"); 1825 return ObjectSynchronizer::request_deflate_idle_monitors(); 1826 WB_END 1827 1828 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1829 VM_ForceSafepoint force_safepoint_op; 1830 VMThread::execute(&force_safepoint_op); 1831 WB_END 1832 1833 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1834 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1835 return (jlong) ik->constants(); 1836 WB_END 1837 1838 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1839 return ConstantPool::CPCACHE_INDEX_TAG; 1840 WB_END 1841 1842 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1843 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1844 ConstantPool* cp = ik->constants(); 1845 if (cp->cache() == NULL) { 1846 return -1; 1847 } 1848 return cp->cache()->length(); 1849 WB_END 1850 1851 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1852 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1853 ConstantPool* cp = ik->constants(); 1854 if (cp->cache() == NULL) { 1855 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1856 } 1857 jint cpci = index; 1858 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1859 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1860 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1861 } 1862 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1863 return cpi; 1864 WB_END 1865 1866 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1867 return ConstantPool::encode_invokedynamic_index(index); 1868 WB_END 1869 1870 WB_ENTRY(jobjectArray, WB_getObjectsViaKlassOopMaps(JNIEnv* env, jobject wb, jobject thing)) 1871 oop aoop = JNIHandles::resolve(thing); 1872 if (!aoop->is_instance()) { 1873 return NULL; 1874 } 1875 instanceHandle ih(THREAD, (instanceOop) aoop); 1876 InstanceKlass* klass = InstanceKlass::cast(ih->klass()); 1877 if (klass->nonstatic_oop_map_count() == 0) { 1878 return NULL; 1879 } 1880 const OopMapBlock* map = klass->start_of_nonstatic_oop_maps(); 1881 const OopMapBlock* const end = map + klass->nonstatic_oop_map_count(); 1882 int oop_count = 0; 1883 while (map < end) { 1884 oop_count += map->count(); 1885 map++; 1886 } 1887 1888 objArrayHandle result_array = 1889 oopFactory::new_objArray_handle(vmClasses::Object_klass(), oop_count, CHECK_NULL); 1890 map = klass->start_of_nonstatic_oop_maps(); 1891 int index = 0; 1892 while (map < end) { 1893 int offset = map->offset(); 1894 for (unsigned int j = 0; j < map->count(); j++) { 1895 result_array->obj_at_put(index++, ih->obj_field(offset)); 1896 offset += heapOopSize; 1897 } 1898 map++; 1899 } 1900 return (jobjectArray)JNIHandles::make_local(THREAD, result_array()); 1901 WB_END 1902 1903 class CollectOops : public BasicOopIterateClosure { 1904 public: 1905 GrowableArray<Handle>* array; 1906 1907 jobjectArray create_jni_result(JNIEnv* env, TRAPS) { 1908 objArrayHandle result_array = 1909 oopFactory::new_objArray_handle(vmClasses::Object_klass(), array->length(), CHECK_NULL); 1910 for (int i = 0 ; i < array->length(); i++) { 1911 result_array->obj_at_put(i, array->at(i)()); 1912 } 1913 return (jobjectArray)JNIHandles::make_local(THREAD, result_array()); 1914 } 1915 1916 void add_oop(oop o) { 1917 Handle oh = Handle(Thread::current(), o); 1918 // Value might be oop, but JLS can't see as Object, just iterate through it... 1919 if (oh != NULL && oh->is_inline_type()) { 1920 oh->oop_iterate(this); 1921 } else { 1922 array->append(oh); 1923 } 1924 } 1925 1926 void do_oop(oop* o) { add_oop(HeapAccess<>::oop_load(o)); } 1927 void do_oop(narrowOop* v) { add_oop(HeapAccess<>::oop_load(v)); } 1928 }; 1929 1930 1931 WB_ENTRY(jobjectArray, WB_getObjectsViaOopIterator(JNIEnv* env, jobject wb, jobject thing)) 1932 ResourceMark rm(thread); 1933 Handle objh(thread, JNIHandles::resolve(thing)); 1934 GrowableArray<Handle>* array = new GrowableArray<Handle>(128); 1935 CollectOops collectOops; 1936 collectOops.array = array; 1937 objh->oop_iterate(&collectOops); 1938 return collectOops.create_jni_result(env, THREAD); 1939 WB_END 1940 1941 WB_ENTRY(jobjectArray, WB_getObjectsViaFrameOopIterator(JNIEnv* env, jobject wb, jint depth)) 1942 ResourceMark rm(THREAD); 1943 GrowableArray<Handle>* array = new GrowableArray<Handle>(128); 1944 CollectOops collectOops; 1945 collectOops.array = array; 1946 StackFrameStream sfs(thread, false /* update */, true /* process_frames */); 1947 while (depth > 0) { // Skip the native WB API frame 1948 sfs.next(); 1949 frame* f = sfs.current(); 1950 f->oops_do(&collectOops, NULL, sfs.register_map()); 1951 depth--; 1952 } 1953 return collectOops.create_jni_result(env, THREAD); 1954 WB_END 1955 1956 1957 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1958 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1959 VMThread::execute(&clear_ics); 1960 WB_END 1961 1962 template <typename T> 1963 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1964 assert(value != NULL, "sanity"); 1965 if (method == NULL || name == NULL) { 1966 return false; 1967 } 1968 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1969 CHECK_JNI_EXCEPTION_(env, false); 1970 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1971 // can't be in VM when we call JNI 1972 ThreadToNativeFromVM ttnfv(thread); 1973 const char* flag_name = env->GetStringUTFChars(name, NULL); 1974 CHECK_JNI_EXCEPTION_(env, false); 1975 enum CompileCommand option = CompilerOracle::string_to_option(flag_name); 1976 env->ReleaseStringUTFChars(name, flag_name); 1977 if (option == CompileCommand::Unknown) { 1978 return false; 1979 } 1980 if (!CompilerOracle::option_matches_type(option, *value)) { 1981 return false; 1982 } 1983 return CompilerOracle::has_option_value(mh, option, *value); 1984 } 1985 1986 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1987 bool result; 1988 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1989 // can't be in VM when we call JNI 1990 ThreadToNativeFromVM ttnfv(thread); 1991 return booleanBox(thread, env, result); 1992 } 1993 return NULL; 1994 WB_END 1995 1996 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1997 intx result; 1998 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1999 // can't be in VM when we call JNI 2000 ThreadToNativeFromVM ttnfv(thread); 2001 return longBox(thread, env, result); 2002 } 2003 return NULL; 2004 WB_END 2005 2006 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2007 uintx result; 2008 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 2009 // can't be in VM when we call JNI 2010 ThreadToNativeFromVM ttnfv(thread); 2011 return longBox(thread, env, result); 2012 } 2013 return NULL; 2014 WB_END 2015 2016 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2017 double result; 2018 if (GetMethodOption <double> (thread, env, method, name, &result)) { 2019 // can't be in VM when we call JNI 2020 ThreadToNativeFromVM ttnfv(thread); 2021 return doubleBox(thread, env, result); 2022 } 2023 return NULL; 2024 WB_END 2025 2026 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2027 ccstr ccstrResult; 2028 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 2029 // can't be in VM when we call JNI 2030 ThreadToNativeFromVM ttnfv(thread); 2031 jstring result = env->NewStringUTF(ccstrResult); 2032 CHECK_JNI_EXCEPTION_(env, NULL); 2033 return result; 2034 } 2035 return NULL; 2036 WB_END 2037 2038 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb)) 2039 const char* p = Arguments::get_default_shared_archive_path(); 2040 ThreadToNativeFromVM ttn(thread); 2041 jstring path_string = env->NewStringUTF(p); 2042 2043 CHECK_JNI_EXCEPTION_(env, NULL); 2044 2045 return path_string; 2046 WB_END 2047 2048 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb)) 2049 return UseSharedSpaces; 2050 WB_END 2051 2052 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb)) 2053 #if INCLUDE_CDS 2054 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION; 2055 #else 2056 ShouldNotReachHere(); 2057 return (jint)-1; 2058 #endif 2059 WB_END 2060 2061 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb)) 2062 #if INCLUDE_CDS 2063 return (jint)CURRENT_CDS_ARCHIVE_VERSION; 2064 #else 2065 ShouldNotReachHere(); 2066 return (jint)-1; 2067 #endif 2068 WB_END 2069 2070 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb)) 2071 return FileMapInfo::memory_mapping_failed(); 2072 WB_END 2073 2074 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 2075 oop obj_oop = JNIHandles::resolve(obj); 2076 return Universe::heap()->is_archived_object(obj_oop); 2077 WB_END 2078 2079 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str)) 2080 ResourceMark rm(THREAD); 2081 oop str_oop = JNIHandles::resolve(str); 2082 int length; 2083 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false)); 2084 return StringTable::lookup_shared(chars, length) == str_oop; 2085 WB_END 2086 2087 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 2088 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2089 WB_END 2090 2091 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env)) 2092 return HeapShared::closed_regions_mapped(); 2093 WB_END 2094 2095 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz)) 2096 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 2097 if (k->is_instance_klass()) { 2098 InstanceKlass *ik = InstanceKlass::cast(k); 2099 ConstantPool *cp = ik->constants(); 2100 objArrayOop refs = cp->resolved_references(); 2101 return (jobject)JNIHandles::make_local(THREAD, refs); 2102 } else { 2103 return NULL; 2104 } 2105 WB_END 2106 2107 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz)) 2108 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 2109 if (!k->is_instance_klass()) { 2110 return; 2111 } 2112 InstanceKlass *ik = InstanceKlass::cast(k); 2113 ik->link_class(THREAD); // may throw verification error 2114 WB_END 2115 2116 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 2117 return HeapShared::open_regions_mapped(); 2118 WB_END 2119 2120 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env)) 2121 #if INCLUDE_CDS 2122 return true; 2123 #else 2124 return false; 2125 #endif // INCLUDE_CDS 2126 WB_END 2127 2128 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env)) 2129 #if COMPILER2_OR_JVMCI 2130 return true; 2131 #else 2132 return false; 2133 #endif 2134 WB_END 2135 2136 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env)) 2137 #if INCLUDE_JVMCI 2138 return JVMCIGlobals::gc_supports_jvmci(); 2139 #else 2140 return false; 2141 #endif 2142 WB_END 2143 2144 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env)) 2145 return HeapShared::can_write(); 2146 WB_END 2147 2148 2149 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env)) 2150 #if INCLUDE_JFR 2151 return true; 2152 #else 2153 return false; 2154 #endif // INCLUDE_JFR 2155 WB_END 2156 2157 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env)) 2158 #if defined(DTRACE_ENABLED) 2159 return true; 2160 #else 2161 return false; 2162 #endif // DTRACE_ENABLED 2163 WB_END 2164 2165 #if INCLUDE_CDS 2166 2167 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name)) 2168 ResourceMark rm; 2169 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 2170 jint result = (jint)CDSConstants::get_cds_offset(c_name); 2171 return result; 2172 WB_END 2173 2174 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name)) 2175 ResourceMark rm; 2176 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 2177 jint result = (jint)CDSConstants::get_cds_constant(c_name); 2178 return result; 2179 WB_END 2180 2181 #endif // INCLUDE_CDS 2182 2183 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle)) 2184 class ReadMonitorsClosure : public HandshakeClosure { 2185 jboolean _executed; 2186 2187 void do_thread(Thread* th) { 2188 JavaThread* jt = JavaThread::cast(th); 2189 ResourceMark rm; 2190 2191 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>(); 2192 2193 if (!jt->has_last_Java_frame()) { 2194 return; 2195 } 2196 RegisterMap rmap(jt); 2197 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != NULL; vf = vf->java_sender()) { 2198 GrowableArray<MonitorInfo*> *monitors = vf->monitors(); 2199 if (monitors != NULL) { 2200 int len = monitors->length(); 2201 // Walk monitors youngest to oldest 2202 for (int i = len - 1; i >= 0; i--) { 2203 MonitorInfo* mon_info = monitors->at(i); 2204 if (mon_info->eliminated()) continue; 2205 oop owner = mon_info->owner(); 2206 if (owner != NULL) { 2207 info->append(mon_info); 2208 } 2209 } 2210 } 2211 } 2212 _executed = true; 2213 } 2214 2215 public: 2216 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {} 2217 jboolean executed() const { return _executed; } 2218 }; 2219 2220 ReadMonitorsClosure rmc; 2221 if (thread_handle != NULL) { 2222 ThreadsListHandle tlh; 2223 JavaThread* target = nullptr; 2224 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, NULL); 2225 if (is_alive) { 2226 Handshake::execute(&rmc, &tlh, target); 2227 } 2228 } 2229 return rmc.executed(); 2230 WB_END 2231 2232 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 2233 class TraceSelfClosure : public HandshakeClosure { 2234 jint _num_threads_completed; 2235 2236 void do_thread(Thread* th) { 2237 JavaThread* jt = JavaThread::cast(th); 2238 ResourceMark rm; 2239 2240 jt->print_on(tty); 2241 jt->print_stack_on(tty); 2242 tty->cr(); 2243 Atomic::inc(&_num_threads_completed); 2244 } 2245 2246 public: 2247 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {} 2248 2249 jint num_threads_completed() const { return _num_threads_completed; } 2250 }; 2251 TraceSelfClosure tsc(Thread::current()); 2252 2253 if (all_threads) { 2254 Handshake::execute(&tsc); 2255 } else if (thread_handle != NULL) { 2256 ThreadsListHandle tlh; 2257 JavaThread* target = nullptr; 2258 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, NULL); 2259 if (is_alive) { 2260 Handshake::execute(&tsc, &tlh, target); 2261 } 2262 } 2263 return tsc.num_threads_completed(); 2264 WB_END 2265 2266 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle)) 2267 class TraceSelfClosure : public AsyncHandshakeClosure { 2268 JavaThread* _self; 2269 void do_thread(Thread* th) { 2270 assert(th->is_Java_thread(), "sanity"); 2271 // AsynchHandshake handshakes are only executed by target. 2272 assert(_self == th, "Must be"); 2273 assert(Thread::current() == th, "Must be"); 2274 JavaThread* jt = JavaThread::cast(th); 2275 ResourceMark rm; 2276 jt->print_on(tty); 2277 jt->print_stack_on(tty); 2278 tty->cr(); 2279 } 2280 2281 public: 2282 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {} 2283 }; 2284 if (thread_handle != NULL) { 2285 ThreadsListHandle tlh; 2286 JavaThread* target = nullptr; 2287 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, NULL); 2288 if (is_alive) { 2289 TraceSelfClosure* tsc = new TraceSelfClosure(target); 2290 Handshake::execute(tsc, target); 2291 } 2292 } 2293 WB_END 2294 2295 static volatile int _emulated_lock = 0; 2296 2297 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender)) 2298 JavaThread* self = JavaThread::current(); 2299 2300 { 2301 // Before trying to acquire the lock transition into a safepoint safe state. 2302 // Otherwise if either suspender or suspendee blocks for a safepoint 2303 // in ~ThreadBlockInVM the other one could loop forever trying to acquire 2304 // the lock without allowing the safepoint to progress. 2305 ThreadBlockInVM tbivm(self); 2306 2307 // We will deadlock here if we are 'suspender' and 'suspendee' 2308 // suspended in ~ThreadBlockInVM. This verifies we only suspend 2309 // at the right place. 2310 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {} 2311 assert(_emulated_lock == 1, "Must be locked"); 2312 2313 // Sleep much longer in suspendee to force situation where 2314 // 'suspender' is waiting above to acquire lock. 2315 os::naked_short_sleep(suspender ? 1 : 10); 2316 } 2317 Atomic::store(&_emulated_lock, 0); 2318 WB_END 2319 2320 // Some convenience methods to deal with objects from java 2321 int WhiteBox::offset_for_field(const char* field_name, oop object, 2322 Symbol* signature_symbol) { 2323 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 2324 2325 //Get the class of our object 2326 Klass* arg_klass = object->klass(); 2327 //Turn it into an instance-klass 2328 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 2329 2330 //Create symbols to look for in the class 2331 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name); 2332 2333 //To be filled in with an offset of the field we're looking for 2334 fieldDescriptor fd; 2335 2336 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 2337 if (res == NULL) { 2338 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 2339 name_symbol->as_C_string()); 2340 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 2341 } 2342 2343 //fetch the field at the offset we've found 2344 int dest_offset = fd.offset(); 2345 2346 return dest_offset; 2347 } 2348 2349 2350 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 2351 int offset = offset_for_field(field_name, object, 2352 vmSymbols::string_signature()); 2353 oop string = object->obj_field(offset); 2354 if (string == NULL) { 2355 return NULL; 2356 } 2357 const char* ret = java_lang_String::as_utf8_string(string); 2358 return ret; 2359 } 2360 2361 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 2362 int offset = 2363 offset_for_field(field_name, object, vmSymbols::bool_signature()); 2364 bool ret = (object->bool_field(offset) == JNI_TRUE); 2365 return ret; 2366 } 2367 2368 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 2369 ResourceMark rm; 2370 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass)); 2371 const char* klass_name = klass->external_name(); 2372 2373 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 2374 2375 // one by one registration natives for exception catching 2376 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 2377 CHECK_JNI_EXCEPTION(env); 2378 for (int i = 0, n = method_count; i < n; ++i) { 2379 // Skip dummy entries 2380 if (method_array[i].fnPtr == NULL) continue; 2381 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 2382 jthrowable throwable_obj = env->ExceptionOccurred(); 2383 if (throwable_obj != NULL) { 2384 env->ExceptionClear(); 2385 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 2386 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 2387 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 2388 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s", 2389 klass_name, method_array[i].name, method_array[i].signature); 2390 } 2391 } else { 2392 // Registration failed unexpectedly. 2393 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered", 2394 klass_name, method_array[i].name, method_array[i].signature); 2395 env->UnregisterNatives(wbclass); 2396 break; 2397 } 2398 } 2399 } 2400 } 2401 2402 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 2403 // can't be in VM when we call JNI 2404 ThreadToNativeFromVM ttnfv(thread); 2405 const char* dir = env->GetStringUTFChars(compDirect, NULL); 2406 CHECK_JNI_EXCEPTION_(env, 0); 2407 int ret; 2408 { 2409 ThreadInVMfromNative ttvfn(thread); // back to VM 2410 ret = DirectivesParser::parse_string(dir, tty); 2411 } 2412 env->ReleaseStringUTFChars(compDirect, dir); 2413 // -1 for error parsing directive. Return 0 as number of directives added. 2414 if (ret == -1) { 2415 ret = 0; 2416 } 2417 return (jint) ret; 2418 WB_END 2419 2420 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 2421 DirectivesStack::pop(count); 2422 WB_END 2423 2424 // Checks that the library libfile has the noexecstack bit set. 2425 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 2426 jboolean ret = false; 2427 #ifdef LINUX 2428 // Can't be in VM when we call JNI. 2429 ThreadToNativeFromVM ttnfv(thread); 2430 const char* lf = env->GetStringUTFChars(libfile, NULL); 2431 CHECK_JNI_EXCEPTION_(env, 0); 2432 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 2433 env->ReleaseStringUTFChars(libfile, lf); 2434 #endif 2435 return ret; 2436 WB_END 2437 2438 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 2439 LINUX_ONLY(return OSContainer::is_containerized();) 2440 return false; 2441 WB_END 2442 2443 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env, 2444 jobject o, 2445 jstring proc_cgroups, 2446 jstring proc_self_cgroup, 2447 jstring proc_self_mountinfo)) 2448 jint ret = 0; 2449 #ifdef LINUX 2450 ThreadToNativeFromVM ttnfv(thread); 2451 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, NULL); 2452 CHECK_JNI_EXCEPTION_(env, 0); 2453 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, NULL); 2454 CHECK_JNI_EXCEPTION_(env, 0); 2455 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, NULL); 2456 CHECK_JNI_EXCEPTION_(env, 0); 2457 u1 cg_type_flags = 0; 2458 // This sets cg_type_flags 2459 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags); 2460 ret = (jint)cg_type_flags; 2461 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups); 2462 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup); 2463 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo); 2464 #endif 2465 return ret; 2466 WB_END 2467 2468 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 2469 os::print_os_info(tty); 2470 WB_END 2471 2472 // Elf decoder 2473 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 2474 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 2475 ElfFile::_do_not_cache_elf_section = true; 2476 #endif 2477 WB_END 2478 2479 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o)) 2480 return (jlong) ResolvedMethodTable::items_count(); 2481 WB_END 2482 2483 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o)) 2484 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count(); 2485 WB_END 2486 2487 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror)) 2488 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror)); 2489 // Return size in bytes. 2490 return k->size() * wordSize; 2491 WB_END 2492 2493 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java. 2494 // It explains how the thread's priority field is used for test state coordination. 2495 // 2496 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle)) 2497 oop target_oop = JNIHandles::resolve_non_null(target_handle); 2498 jlong tid = java_lang_Thread::thread_id(target_oop); 2499 JavaThread* target = java_lang_Thread::thread(target_oop); 2500 2501 // Grab a ThreadsListHandle to protect the target thread whilst terminating 2502 ThreadsListHandle tlh; 2503 2504 // Look up the target thread by tid to ensure it is present 2505 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid); 2506 if (t == NULL) { 2507 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!"); 2508 } 2509 2510 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected"); 2511 // Allow target to terminate by boosting priority 2512 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1)); 2513 2514 // Now wait for the target to terminate 2515 while (!target->is_terminated()) { 2516 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint 2517 os::naked_short_sleep(0); 2518 } 2519 2520 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated"); 2521 2522 // Now release the GC inducing thread - we have to re-resolve the external oop that 2523 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now. 2524 oop original = JNIHandles::resolve_non_null(target_handle); 2525 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2)); 2526 2527 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:"); 2528 2529 // The Java code should be creating garbage and triggering GC, which would potentially move 2530 // the threadObj oop. If the exiting thread is properly protected then its threadObj should 2531 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to 2532 // kick in. 2533 for (int i = 0; i < 5; i++) { 2534 oop original = JNIHandles::resolve_non_null(target_handle); 2535 oop current = t->threadObj(); 2536 if (original != current) { 2537 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i); 2538 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!"); 2539 } else { 2540 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i); 2541 ThreadBlockInVM tbivm(thread); 2542 os::naked_short_sleep(50); 2543 } 2544 } 2545 WB_END 2546 2547 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map)) 2548 ResourceMark rm; // for verify 2549 stringStream st; 2550 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) { 2551 frame* current_frame = fst.current(); 2552 if (log) { 2553 current_frame->print_value_on(&st, NULL); 2554 } 2555 current_frame->verify(fst.register_map()); 2556 } 2557 if (log) { 2558 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames"); 2559 tty->print_raw(st.as_string()); 2560 tty->print_cr("[WhiteBox::VerifyFrames] Done"); 2561 } 2562 WB_END 2563 2564 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb)) 2565 #if INCLUDE_JVMTI 2566 return JNI_TRUE; 2567 #else 2568 return JNI_FALSE; 2569 #endif 2570 WB_END 2571 2572 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time)) 2573 os::naked_short_sleep(time); 2574 WB_END 2575 2576 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o)) 2577 ThreadToNativeFromVM ttn(thread); 2578 jstring info_string = env->NewStringUTF(XSTR(LIBC)); 2579 CHECK_JNI_EXCEPTION_(env, NULL); 2580 return info_string; 2581 WB_END 2582 2583 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb)) 2584 GCLocker::lock_critical(thread); 2585 WB_END 2586 2587 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb)) 2588 GCLocker::unlock_critical(thread); 2589 WB_END 2590 2591 #define CC (char*) 2592 2593 static JNINativeMethod methods[] = { 2594 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 2595 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 2596 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 2597 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 2598 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 2599 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 2600 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 2601 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 2602 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 2603 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses }, 2604 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount }, 2605 {CC"parseCommandLine0", 2606 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;", 2607 (void*) &WB_ParseCommandLine 2608 }, 2609 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2610 (void*)&WB_AddToBootstrapClassLoaderSearch}, 2611 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2612 (void*)&WB_AddToSystemClassLoaderSearch}, 2613 {CC"getCompressedOopsMaxHeapSize", CC"()J", 2614 (void*)&WB_GetCompressedOopsMaxHeapSize}, 2615 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 2616 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 2617 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 2618 #if INCLUDE_CDS 2619 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName}, 2620 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName}, 2621 #endif 2622 #if INCLUDE_G1GC 2623 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 2624 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 2625 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 2626 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 2627 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 2628 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 2629 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 2630 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 2631 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit}, 2632 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 2633 (void*)&WB_G1AuxiliaryMemoryUsage }, 2634 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount }, 2635 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds }, 2636 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 2637 #endif // INCLUDE_G1GC 2638 #if INCLUDE_PARALLELGC 2639 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 2640 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 2641 #endif 2642 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 2643 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 2644 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType}, 2645 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 2646 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 2647 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 2648 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 2649 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 2650 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 2651 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 2652 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena }, 2653 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena }, 2654 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc }, 2655 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 2656 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized}, 2657 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 2658 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 2659 (void*)&WB_DeoptimizeMethod }, 2660 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 2661 (void*)&WB_IsMethodCompiled }, 2662 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 2663 (void*)&WB_IsMethodCompilable}, 2664 {CC"isMethodQueuedForCompilation0", 2665 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 2666 {CC"isIntrinsicAvailable0", 2667 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2668 (void*)&WB_IsIntrinsicAvailable}, 2669 {CC"makeMethodNotCompilable0", 2670 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2671 {CC"testSetDontInlineMethod0", 2672 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2673 {CC"getMethodCompilationLevel0", 2674 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2675 {CC"getMethodDecompileCount0", 2676 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount}, 2677 {CC"getMethodTrapCount0", 2678 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2679 (void*)&WB_GetMethodTrapCount}, 2680 {CC"getDeoptCount0", 2681 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount}, 2682 {CC"getMethodEntryBci0", 2683 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2684 {CC"getCompileQueueSize", 2685 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2686 {CC"testSetForceInlineMethod0", 2687 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2688 {CC"enqueueMethodForCompilation0", 2689 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2690 {CC"enqueueInitializerForCompilation0", 2691 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2692 {CC"markMethodProfiled", 2693 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled}, 2694 {CC"clearMethodState0", 2695 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2696 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2697 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2698 {CC"matchesMethod", 2699 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2700 (void*)&WB_MatchesMethod}, 2701 {CC"matchesInline", 2702 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2703 (void*)&WB_MatchesInline}, 2704 {CC"shouldPrintAssembly", 2705 CC"(Ljava/lang/reflect/Executable;I)Z", 2706 (void*)&WB_ShouldPrintAssembly}, 2707 2708 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2709 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2710 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2711 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2712 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2713 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2714 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2715 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2716 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2717 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2718 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2719 (void*)&WB_SetStringVMFlag}, 2720 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2721 (void*)&WB_GetBooleanVMFlag}, 2722 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2723 (void*)&WB_GetIntVMFlag}, 2724 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2725 (void*)&WB_GetUintVMFlag}, 2726 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2727 (void*)&WB_GetIntxVMFlag}, 2728 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2729 (void*)&WB_GetUintxVMFlag}, 2730 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2731 (void*)&WB_GetUint64VMFlag}, 2732 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2733 (void*)&WB_GetSizeTVMFlag}, 2734 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2735 (void*)&WB_GetDoubleVMFlag}, 2736 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2737 (void*)&WB_GetStringVMFlag}, 2738 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2739 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2740 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2741 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2742 {CC"allocateMetaspace", 2743 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2744 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2745 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2746 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment }, 2747 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2748 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2749 (void*)&WB_GetNMethod }, 2750 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 2751 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2752 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2753 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2754 {CC"getCompilationActivityMode", 2755 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2756 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2757 (void*)&WB_GetMethodData }, 2758 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2759 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2760 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2761 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2762 (void*)&WB_DefineModule }, 2763 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2764 (void*)&WB_AddModuleExports }, 2765 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2766 (void*)&WB_AddReadsModule }, 2767 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2768 (void*)&WB_AddModuleExportsToAllUnnamed }, 2769 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2770 (void*)&WB_AddModuleExportsToAll }, 2771 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors }, 2772 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2773 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2774 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2775 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 2776 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 2777 {CC"remapInstructionOperandFromCPCache0", 2778 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 2779 {CC"encodeConstantPoolIndyIndex0", 2780 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 2781 {CC"getObjectsViaKlassOopMaps0", 2782 CC"(Ljava/lang/Object;)[Ljava/lang/Object;", (void*)&WB_getObjectsViaKlassOopMaps}, 2783 {CC"getObjectsViaOopIterator0", 2784 CC"(Ljava/lang/Object;)[Ljava/lang/Object;",(void*)&WB_getObjectsViaOopIterator}, 2785 {CC"getObjectsViaFrameOopIterator", 2786 CC"(I)[Ljava/lang/Object;", (void*)&WB_getObjectsViaFrameOopIterator}, 2787 {CC"getMethodBooleanOption", 2788 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2789 (void*)&WB_GetMethodBooleaneOption}, 2790 {CC"getMethodIntxOption", 2791 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2792 (void*)&WB_GetMethodIntxOption}, 2793 {CC"getMethodUintxOption", 2794 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2795 (void*)&WB_GetMethodUintxOption}, 2796 {CC"getMethodDoubleOption", 2797 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2798 (void*)&WB_GetMethodDoubleOption}, 2799 {CC"getMethodStringOption", 2800 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2801 (void*)&WB_GetMethodStringOption}, 2802 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;", 2803 (void*)&WB_GetDefaultArchivePath}, 2804 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion}, 2805 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion}, 2806 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled}, 2807 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 2808 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString }, 2809 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2810 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped }, 2811 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 2812 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass}, 2813 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2814 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded }, 2815 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded }, 2816 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded }, 2817 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded }, 2818 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC}, 2819 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive }, 2820 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed }, 2821 2822 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2823 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors }, 2824 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2825 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack }, 2826 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock}, 2827 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread }, 2828 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames }, 2829 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2830 (void*)&WB_AddCompilerDirective }, 2831 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2832 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported}, 2833 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler}, 2834 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected}, 2835 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically}, 2836 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints}, 2837 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl}, 2838 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl}, 2839 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle}, 2840 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z", 2841 (void*)&WB_ConcurrentGCRunTo}, 2842 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2843 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2844 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2845 {CC"validateCgroup", 2846 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I", 2847 (void*)&WB_ValidateCgroup }, 2848 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2849 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 2850 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount }, 2851 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount }, 2852 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize}, 2853 2854 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext}, 2855 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext}, 2856 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext}, 2857 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext}, 2858 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext}, 2859 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext}, 2860 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext}, 2861 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena}, 2862 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena}, 2863 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena}, 2864 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize}, 2865 2866 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded}, 2867 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe}, 2868 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName}, 2869 2870 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical}, 2871 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical}, 2872 }; 2873 2874 2875 #undef CC 2876 2877 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2878 { 2879 if (WhiteBoxAPI) { 2880 // Make sure that wbclass is loaded by the null classloader 2881 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass))); 2882 Handle loader(THREAD, ik->class_loader()); 2883 if (loader.is_null()) { 2884 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2885 WhiteBox::set_used(); 2886 } 2887 } 2888 } 2889 JVM_END