1 /* 2 * Copyright (c) 2012, 2024, 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 "cds.h" 27 #include "cds/archiveHeapLoader.hpp" 28 #include "cds/cdsConstants.hpp" 29 #include "cds/filemap.hpp" 30 #include "cds/heapShared.hpp" 31 #include "cds/metaspaceShared.hpp" 32 #include "classfile/classLoader.hpp" 33 #include "classfile/classLoaderDataGraph.hpp" 34 #include "classfile/classLoaderStats.hpp" 35 #include "classfile/classPrinter.hpp" 36 #include "classfile/javaClasses.inline.hpp" 37 #include "classfile/modules.hpp" 38 #include "classfile/protectionDomainCache.hpp" 39 #include "classfile/stringTable.hpp" 40 #include "classfile/symbolTable.hpp" 41 #include "classfile/systemDictionary.hpp" 42 #include "classfile/vmSymbols.hpp" 43 #include "code/codeCache.hpp" 44 #include "compiler/compilationPolicy.hpp" 45 #include "compiler/compilerOracle.hpp" 46 #include "compiler/directivesParser.hpp" 47 #include "compiler/methodMatcher.hpp" 48 #include "gc/shared/concurrentGCBreakpoints.hpp" 49 #include "gc/shared/gcConfig.hpp" 50 #include "gc/shared/gcLocker.inline.hpp" 51 #include "gc/shared/genArguments.hpp" 52 #include "jvmtifiles/jvmtiEnv.hpp" 53 #include "logging/log.hpp" 54 #include "memory/iterator.hpp" 55 #include "memory/metadataFactory.hpp" 56 #include "memory/metaspace/testHelpers.hpp" 57 #include "memory/metaspaceUtils.hpp" 58 #include "memory/oopFactory.hpp" 59 #include "memory/resourceArea.hpp" 60 #include "memory/universe.hpp" 61 #include "nmt/mallocSiteTable.hpp" 62 #include "nmt/memTracker.hpp" 63 #include "oops/array.hpp" 64 #include "oops/compressedOops.hpp" 65 #include "oops/constantPool.inline.hpp" 66 #include "oops/klass.inline.hpp" 67 #include "oops/method.inline.hpp" 68 #include "oops/methodData.inline.hpp" 69 #include "oops/objArrayKlass.hpp" 70 #include "oops/objArrayOop.inline.hpp" 71 #include "oops/oop.inline.hpp" 72 #include "oops/typeArrayOop.inline.hpp" 73 #include "prims/jvmtiEnvBase.hpp" 74 #include "prims/resolvedMethodTable.hpp" 75 #include "prims/wbtestmethods/parserTests.hpp" 76 #include "prims/whitebox.inline.hpp" 77 #include "runtime/arguments.hpp" 78 #include "runtime/atomic.hpp" 79 #include "runtime/deoptimization.hpp" 80 #include "runtime/fieldDescriptor.inline.hpp" 81 #include "runtime/flags/jvmFlag.hpp" 82 #include "runtime/flags/jvmFlagAccess.hpp" 83 #include "runtime/frame.inline.hpp" 84 #include "runtime/handles.inline.hpp" 85 #include "runtime/handshake.hpp" 86 #include "runtime/interfaceSupport.inline.hpp" 87 #include "runtime/javaCalls.hpp" 88 #include "runtime/javaThread.inline.hpp" 89 #include "runtime/jniHandles.inline.hpp" 90 #include "runtime/lockStack.hpp" 91 #include "runtime/os.hpp" 92 #include "runtime/stackFrameStream.inline.hpp" 93 #include "runtime/synchronizer.hpp" 94 #include "runtime/threadSMR.hpp" 95 #include "runtime/vframe.hpp" 96 #include "runtime/vm_version.hpp" 97 #include "services/memoryService.hpp" 98 #include "utilities/align.hpp" 99 #include "utilities/checkedCast.hpp" 100 #include "utilities/debug.hpp" 101 #include "utilities/elfFile.hpp" 102 #include "utilities/exceptions.hpp" 103 #include "utilities/macros.hpp" 104 #include "utilities/nativeCallStack.hpp" 105 #include "utilities/ostream.hpp" 106 #if INCLUDE_G1GC 107 #include "gc/g1/g1Arguments.hpp" 108 #include "gc/g1/g1CollectedHeap.inline.hpp" 109 #include "gc/g1/g1ConcurrentMark.hpp" 110 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp" 111 #include "gc/g1/g1HeapRegionManager.hpp" 112 #include "gc/g1/g1HeapRegionRemSet.inline.hpp" 113 #endif // INCLUDE_G1GC 114 #if INCLUDE_PARALLELGC 115 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 116 #endif // INCLUDE_PARALLELGC 117 #if INCLUDE_SERIALGC 118 #include "gc/serial/serialHeap.hpp" 119 #endif // INCLUDE_SERIALGC 120 #if INCLUDE_ZGC 121 #include "gc/z/zAddress.inline.hpp" 122 #endif // INCLUDE_ZGC 123 #if INCLUDE_JVMCI 124 #include "jvmci/jvmciEnv.hpp" 125 #include "jvmci/jvmciRuntime.hpp" 126 #endif 127 #ifdef LINUX 128 #include "cgroupSubsystem_linux.hpp" 129 #include "osContainer_linux.hpp" 130 #include "os_linux.hpp" 131 #endif 132 133 #define CHECK_JNI_EXCEPTION_(env, value) \ 134 do { \ 135 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 136 THREAD->clear_pending_jni_exception_check(); \ 137 if (HAS_PENDING_EXCEPTION) { \ 138 return(value); \ 139 } \ 140 } while (0) 141 142 #define CHECK_JNI_EXCEPTION(env) \ 143 do { \ 144 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 145 THREAD->clear_pending_jni_exception_check(); \ 146 if (HAS_PENDING_EXCEPTION) { \ 147 return; \ 148 } \ 149 } while (0) 150 151 bool WhiteBox::_used = false; 152 volatile bool WhiteBox::compilation_locked = false; 153 154 class VM_WhiteBoxOperation : public VM_Operation { 155 public: 156 VM_WhiteBoxOperation() { } 157 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 158 bool allow_nested_vm_operations() const { return true; } 159 }; 160 161 162 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 163 return (jlong)(void*)JNIHandles::resolve(obj); 164 WB_END 165 166 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 167 return heapOopSize; 168 WB_END 169 170 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 171 return (jint)os::vm_page_size(); 172 WB_END 173 174 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 175 return os::vm_allocation_granularity(); 176 WB_END 177 178 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 179 return os::large_page_size(); 180 WB_END 181 182 class WBIsKlassAliveClosure : public LockedClassesDo { 183 Symbol* _name; 184 int _count; 185 public: 186 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {} 187 188 void do_klass(Klass* k) { 189 Symbol* ksym = k->name(); 190 if (ksym->fast_compare(_name) == 0) { 191 _count++; 192 } else if (k->is_instance_klass()) { 193 // Need special handling for hidden classes because the JVM 194 // appends "+<hex-address>" to hidden class names. 195 InstanceKlass *ik = InstanceKlass::cast(k); 196 if (ik->is_hidden()) { 197 ResourceMark rm; 198 char* k_name = ksym->as_C_string(); 199 // Find the first '+' char and truncate the string at that point. 200 // NOTE: This will not work correctly if the original hidden class 201 // name contains a '+'. 202 char* plus_char = strchr(k_name, '+'); 203 if (plus_char != nullptr) { 204 *plus_char = 0; 205 char* c_name = _name->as_C_string(); 206 if (strcmp(c_name, k_name) == 0) { 207 _count++; 208 } 209 } 210 } 211 } 212 } 213 214 int count() const { 215 return _count; 216 } 217 }; 218 219 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name)) 220 oop h_name = JNIHandles::resolve(name); 221 if (h_name == nullptr) { 222 return 0; 223 } 224 Symbol* sym = java_lang_String::as_symbol(h_name); 225 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 226 227 WBIsKlassAliveClosure closure(sym); 228 ClassLoaderDataGraph::classes_do(&closure); 229 230 // Return the count of alive classes with this name. 231 return closure.count(); 232 WB_END 233 234 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name)) 235 oop h_name = JNIHandles::resolve(name); 236 if (h_name == nullptr) { 237 return 0; 238 } 239 Symbol* sym = java_lang_String::as_symbol(h_name); 240 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 241 return (jint)sym->refcount(); 242 WB_END 243 244 245 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(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->AddToBootstrapClassLoaderSearch(seg); 251 assert(err == JVMTI_ERROR_NONE, "must not fail"); 252 #endif 253 } 254 WB_END 255 256 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 257 #if INCLUDE_JVMTI 258 ResourceMark rm; 259 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 260 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 261 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 262 assert(err == JVMTI_ERROR_NONE, "must not fail"); 263 #endif 264 } 265 WB_END 266 267 268 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 269 return (jlong)Arguments::max_heap_for_compressed_oops(); 270 } 271 WB_END 272 273 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 274 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " " 275 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 276 MinHeapSize, 277 InitialHeapSize, 278 MaxHeapSize, 279 SpaceAlignment, 280 HeapAlignment); 281 } 282 WB_END 283 284 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 285 size_t granularity = os::vm_allocation_granularity(); 286 ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size()); 287 VirtualSpace vs; 288 vs.initialize(rhs, 50 * granularity); 289 290 // Check if constraints are complied 291 if (!( UseCompressedOops && rhs.base() != nullptr && 292 CompressedOops::base() != nullptr && 293 CompressedOops::use_implicit_null_checks() )) { 294 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 295 "\tUseCompressedOops is %d\n" 296 "\trhs.base() is " PTR_FORMAT "\n" 297 "\tCompressedOops::base() is " PTR_FORMAT "\n" 298 "\tCompressedOops::use_implicit_null_checks() is %d", 299 UseCompressedOops, 300 p2i(rhs.base()), 301 p2i(CompressedOops::base()), 302 CompressedOops::use_implicit_null_checks()); 303 return; 304 } 305 tty->print_cr("Reading from no access area... "); 306 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 307 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 308 WB_END 309 310 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 311 size_t magnitude, size_t iterations) { 312 size_t granularity = os::vm_allocation_granularity(); 313 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size()); 314 VirtualSpace vs; 315 if (!vs.initialize(rhs, 0)) { 316 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 317 return 3; 318 } 319 320 int seed = os::random(); 321 tty->print_cr("Random seed is %d", seed); 322 323 for (size_t i = 0; i < iterations; i++) { 324 325 // Whether we will shrink or grow 326 bool shrink = os::random() % 2L == 0; 327 328 // Get random delta to resize virtual space 329 size_t delta = (size_t)os::random() % magnitude; 330 331 // If we are about to shrink virtual space below zero, then expand instead 332 if (shrink && vs.committed_size() < delta) { 333 shrink = false; 334 } 335 336 // Resizing by delta 337 if (shrink) { 338 vs.shrink_by(delta); 339 } else { 340 // If expanding fails expand_by will silently return false 341 vs.expand_by(delta, true); 342 } 343 } 344 return 0; 345 } 346 347 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 348 jlong reserved_space_size, jlong magnitude, jlong iterations)) 349 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 350 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 351 iterations); 352 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 353 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 354 return 1; 355 } 356 357 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 358 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 359 if (sizeof(size_t) < sizeof(jlong)) { 360 jlong size_t_max_value = (jlong)SIZE_MAX; 361 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 362 || iterations > size_t_max_value) { 363 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 364 return 2; 365 } 366 } 367 368 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 369 (size_t) magnitude, (size_t) iterations); 370 WB_END 371 372 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name)) 373 return GCConfig::is_gc_supported((CollectedHeap::Name)name); 374 WB_END 375 376 WB_ENTRY(jboolean, WB_HasLibgraal(JNIEnv* env, jobject o)) 377 #if INCLUDE_JVMCI 378 return JVMCI::shared_library_exists(); 379 #endif 380 return false; 381 WB_END 382 383 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name)) 384 #if INCLUDE_JVMCI 385 if (EnableJVMCI) { 386 // Enter the JVMCI env that will be used by the CompileBroker. 387 JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__); 388 return jvmciEnv.init_error() == JNI_OK && jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name); 389 } 390 #endif 391 return false; 392 WB_END 393 394 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name)) 395 return GCConfig::is_gc_selected((CollectedHeap::Name)name); 396 WB_END 397 398 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o)) 399 return GCConfig::is_gc_selected_ergonomically(); 400 WB_END 401 402 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 403 oop p = JNIHandles::resolve(obj); 404 #if INCLUDE_G1GC 405 if (UseG1GC) { 406 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 407 const G1HeapRegion* hr = g1h->heap_region_containing(p); 408 return hr->is_old_or_humongous(); 409 } 410 #endif 411 #if INCLUDE_PARALLELGC 412 if (UseParallelGC) { 413 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 414 return !psh->is_in_young(p); 415 } 416 #endif 417 #if INCLUDE_ZGC 418 if (UseZGC) { 419 if (ZGenerational) { 420 return ZHeap::heap()->is_old(to_zaddress(p)); 421 } else { 422 return Universe::heap()->is_in(p); 423 } 424 } 425 #endif 426 #if INCLUDE_SHENANDOAHGC 427 if (UseShenandoahGC) { 428 return Universe::heap()->is_in(p); 429 } 430 #endif 431 #if INCLUDE_SERIALGC 432 if (UseSerialGC) { 433 return !SerialHeap::heap()->is_in_young(p); 434 } 435 #endif 436 ShouldNotReachHere(); 437 return false; 438 WB_END 439 440 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 441 oop p = JNIHandles::resolve(obj); 442 return p->size() * HeapWordSize; 443 WB_END 444 445 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 446 return (jlong)SpaceAlignment; 447 WB_END 448 449 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 450 return (jlong)HeapAlignment; 451 WB_END 452 453 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o)) 454 return Universe::heap()->supports_concurrent_gc_breakpoints(); 455 WB_END 456 457 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o)) 458 ConcurrentGCBreakpoints::acquire_control(); 459 WB_END 460 461 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o)) 462 ConcurrentGCBreakpoints::release_control(); 463 WB_END 464 465 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o)) 466 ConcurrentGCBreakpoints::run_to_idle(); 467 WB_END 468 469 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at)) 470 Handle h_name(THREAD, JNIHandles::resolve(at)); 471 ResourceMark rm; 472 const char* c_name = java_lang_String::as_utf8_string(h_name()); 473 return ConcurrentGCBreakpoints::run_to(c_name); 474 WB_END 475 476 #if INCLUDE_G1GC 477 478 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 479 if (UseG1GC) { 480 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 481 oop result = JNIHandles::resolve(obj); 482 const G1HeapRegion* hr = g1h->heap_region_containing(result); 483 return hr->is_humongous(); 484 } 485 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 486 WB_END 487 488 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 489 if (UseG1GC) { 490 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 491 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr); 492 return hr->is_humongous(); 493 } 494 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 495 WB_END 496 497 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 498 if (UseG1GC) { 499 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 500 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr); 501 return hr->is_free(); 502 } 503 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 504 WB_END 505 506 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 507 if (UseG1GC) { 508 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 509 size_t nr = g1h->max_regions(); 510 return (jlong)nr; 511 } 512 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 513 WB_END 514 515 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 516 if (UseG1GC) { 517 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 518 size_t nr = g1h->num_free_regions(); 519 return (jlong)nr; 520 } 521 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 522 WB_END 523 524 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 525 if (UseG1GC) { 526 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 527 return g1h->concurrent_mark()->cm_thread()->in_progress(); 528 } 529 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 530 WB_END 531 532 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o)) 533 if (UseG1GC) { 534 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 535 G1ConcurrentMark* cm = g1h->concurrent_mark(); 536 return cm->completed_mark_cycles(); 537 } 538 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled"); 539 WB_END 540 541 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 542 if (UseG1GC) { 543 return (jint)G1HeapRegion::GrainBytes; 544 } 545 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 546 WB_END 547 548 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o)) 549 if (UseG1GC) { 550 return G1CollectedHeap::heap()->has_uncommittable_regions(); 551 } 552 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled"); 553 WB_END 554 555 #endif // INCLUDE_G1GC 556 557 #if INCLUDE_PARALLELGC 558 559 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 560 if (UseParallelGC) { 561 return GenAlignment; 562 } 563 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 564 WB_END 565 566 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 567 if (UseParallelGC) { 568 return GenAlignment; 569 } 570 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 571 WB_END 572 573 #endif // INCLUDE_PARALLELGC 574 575 #if INCLUDE_G1GC 576 577 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 578 if (UseG1GC) { 579 ResourceMark rm(THREAD); 580 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 581 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 582 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 583 return JNIHandles::make_local(THREAD, h()); 584 } 585 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 586 WB_END 587 588 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o)) 589 if (UseG1GC) { 590 G1NUMA* numa = G1NUMA::numa(); 591 return (jint)numa->num_active_nodes(); 592 } 593 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled"); 594 WB_END 595 596 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o)) 597 if (UseG1GC) { 598 G1NUMA* numa = G1NUMA::numa(); 599 int num_node_ids = checked_cast<int>(numa->num_active_nodes()); 600 const uint* node_ids = numa->node_ids(); 601 602 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL); 603 for (int i = 0; i < num_node_ids; i++) { 604 result->int_at_put(i, checked_cast<jint>(node_ids[i])); 605 } 606 return (jintArray) JNIHandles::make_local(THREAD, result); 607 } 608 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled"); 609 WB_END 610 611 class OldRegionsLivenessClosure: public G1HeapRegionClosure { 612 613 private: 614 const int _liveness; 615 size_t _total_count; 616 size_t _total_memory; 617 size_t _total_memory_to_free; 618 619 public: 620 OldRegionsLivenessClosure(int liveness) : 621 _liveness(liveness), 622 _total_count(0), 623 _total_memory(0), 624 _total_memory_to_free(0) { } 625 626 size_t total_count() { return _total_count; } 627 size_t total_memory() { return _total_memory; } 628 size_t total_memory_to_free() { return _total_memory_to_free; } 629 630 bool do_heap_region(G1HeapRegion* r) { 631 if (r->is_old()) { 632 size_t live = r->live_bytes(); 633 size_t size = r->used(); 634 size_t reg_size = G1HeapRegion::GrainBytes; 635 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 636 _total_memory += size; 637 ++_total_count; 638 if (size == reg_size) { 639 // We don't include non-full regions since they are unlikely included in mixed gc 640 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 641 _total_memory_to_free += size - live; 642 } 643 } 644 } 645 return false; 646 } 647 }; 648 649 650 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 651 if (!UseG1GC) { 652 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 653 } 654 if (liveness < 0) { 655 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 656 } 657 658 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 659 OldRegionsLivenessClosure rli(liveness); 660 g1h->heap_region_iterate(&rli); 661 662 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 663 result->long_at_put(0, rli.total_count()); 664 result->long_at_put(1, rli.total_memory()); 665 result->long_at_put(2, rli.total_memory_to_free()); 666 return (jlongArray) JNIHandles::make_local(THREAD, result); 667 WB_END 668 669 #endif // INCLUDE_G1GC 670 671 // Alloc memory using the test memory type so that we can use that to see if 672 // NMT picks it up correctly 673 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 674 jlong addr = 0; 675 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 676 return addr; 677 WB_END 678 679 // Alloc memory with pseudo call stack. The test can create pseudo malloc 680 // allocation site to stress the malloc tracking. 681 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 682 address pc = (address)(size_t)pseudo_stack; 683 NativeCallStack stack(&pc, 1); 684 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 685 WB_END 686 687 // Alloc memory with pseudo call stack and specific memory type. 688 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type)) 689 address pc = (address)(size_t)pseudo_stack; 690 NativeCallStack stack(&pc, 1); 691 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack); 692 WB_END 693 694 // Free the memory allocated by NMTAllocTest 695 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 696 os::free((void*)(uintptr_t)mem); 697 WB_END 698 699 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 700 jlong addr = 0; 701 702 addr = (jlong)(uintptr_t)os::reserve_memory(size); 703 MemTracker::record_virtual_memory_type((address)addr, mtTest); 704 705 return addr; 706 WB_END 707 708 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size)) 709 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size); 710 MemTracker::record_virtual_memory_type((address)addr, mtTest); 711 712 return addr; 713 WB_END 714 715 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 716 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 717 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 718 WB_END 719 720 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 721 os::uncommit_memory((char *)(uintptr_t)addr, size); 722 WB_END 723 724 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 725 os::release_memory((char *)(uintptr_t)addr, size); 726 WB_END 727 728 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 729 int hash_size = MallocSiteTable::hash_buckets(); 730 assert(hash_size > 0, "NMT hash_size should be > 0"); 731 return (jint)hash_size; 732 WB_END 733 734 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size)) 735 Arena* arena = new (mtTest) Arena(mtTest, Arena::Tag::tag_other, size_t(init_size)); 736 return (jlong)arena; 737 WB_END 738 739 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena)) 740 Arena* a = (Arena*)arena; 741 delete a; 742 WB_END 743 744 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size)) 745 Arena* a = (Arena*)arena; 746 a->Amalloc(size_t(size)); 747 WB_END 748 749 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 750 assert(method != nullptr, "method should not be null"); 751 ThreadToNativeFromVM ttn(thread); 752 return env->FromReflectedMethod(method); 753 } 754 755 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 756 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 757 private: 758 int _result; 759 const bool _make_not_entrant; 760 public: 761 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 762 _result(0), _make_not_entrant(make_not_entrant) { } 763 int result() const { return _result; } 764 765 void doit() { 766 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 767 if (t->has_last_Java_frame()) { 768 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) { 769 frame* f = fst.current(); 770 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 771 Deoptimization::deoptimize(t, *f); 772 if (_make_not_entrant) { 773 nmethod* nm = CodeCache::find_nmethod(f->pc()); 774 assert(nm != nullptr, "did not find nmethod"); 775 nm->make_not_entrant(); 776 } 777 ++_result; 778 } 779 } 780 } 781 } 782 } 783 }; 784 785 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 786 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 787 VMThread::execute(&op); 788 return op.result(); 789 WB_END 790 791 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth)) 792 bool result = false; 793 if (thread->has_last_Java_frame()) { 794 RegisterMap reg_map(thread, 795 RegisterMap::UpdateMap::include, 796 RegisterMap::ProcessFrames::include, 797 RegisterMap::WalkContinuation::skip); 798 javaVFrame *jvf = thread->last_java_vframe(®_map); 799 for (jint d = 0; d < depth && jvf != nullptr; d++) { 800 jvf = jvf->java_sender(); 801 } 802 result = jvf != nullptr && jvf->fr().is_deoptimized_frame(); 803 } 804 return result; 805 WB_END 806 807 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 808 DeoptimizationScope deopt_scope; 809 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope); 810 deopt_scope.deoptimize_marked(); 811 WB_END 812 813 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 814 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 815 int result = 0; 816 CHECK_JNI_EXCEPTION_(env, result); 817 818 DeoptimizationScope deopt_scope; 819 { 820 MutexLocker mu(Compile_lock); 821 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 822 if (is_osr) { 823 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh()); 824 } else { 825 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag); 826 if (mh->code() != nullptr) { 827 deopt_scope.mark(mh->code()); 828 ++result; 829 } 830 } 831 CodeCache::mark_for_deoptimization(&deopt_scope, mh()); 832 } 833 834 deopt_scope.deoptimize_marked(); 835 836 return result; 837 WB_END 838 839 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 840 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 841 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 842 MutexLocker mu(Compile_lock); 843 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 844 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 845 if (code == nullptr) { 846 return JNI_FALSE; 847 } 848 return !code->is_marked_for_deoptimization(); 849 WB_END 850 851 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) { 852 if (comp == nullptr) { 853 return true; 854 } 855 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 856 bool exclude = directive->ExcludeOption; 857 DirectivesStack::release(directive); 858 return exclude; 859 } 860 861 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) { 862 if (is_osr) { 863 return CompilationPolicy::can_be_osr_compiled(mh, level); 864 } else { 865 return CompilationPolicy::can_be_compiled(mh, level); 866 } 867 } 868 869 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 870 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) { 871 return false; 872 } 873 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 874 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 875 MutexLocker mu(Compile_lock); 876 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 877 878 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by 879 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive 880 // to exclude a compilation of 'method'. 881 if (comp_level == CompLevel_any) { 882 // Both compilers could have ExcludeOption set. Check all combinations. 883 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh); 884 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh); 885 if (excluded_c1 && excluded_c2) { 886 // Compilation of 'method' excluded by both compilers. 887 return false; 888 } 889 890 if (excluded_c1) { 891 // C1 only has ExcludeOption set: Check if compilable with C2. 892 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization); 893 } else if (excluded_c2) { 894 // C2 only has ExcludeOption set: Check if compilable with C1. 895 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple); 896 } 897 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) { 898 // Compilation of 'method' excluded by compiler used for 'comp_level'. 899 return false; 900 } 901 902 return can_be_compiled_at_level(mh, is_osr, (int)comp_level); 903 WB_END 904 905 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 906 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 907 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 908 MutexLocker mu(Compile_lock); 909 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 910 return mh->queued_for_compilation(); 911 WB_END 912 913 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 914 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) { 915 return false; // Intrinsic is not available on a non-existent compilation level. 916 } 917 jmethodID method_id, compilation_context_id; 918 method_id = reflected_method_to_jmid(thread, env, method); 919 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 920 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 921 922 DirectiveSet* directive; 923 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 924 assert(comp != nullptr, "compiler not available"); 925 if (compilation_context != nullptr) { 926 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 927 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 928 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 929 directive = DirectivesStack::getMatchingDirective(cch, comp); 930 } else { 931 // Calling with null matches default directive 932 directive = DirectivesStack::getDefaultDirective(comp); 933 } 934 bool result = comp->is_intrinsic_available(mh, directive); 935 DirectivesStack::release(directive); 936 return result; 937 WB_END 938 939 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 940 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 941 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 942 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 943 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 944 return (code != nullptr ? code->comp_level() : CompLevel_none); 945 WB_END 946 947 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 948 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 949 CHECK_JNI_EXCEPTION(env); 950 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 951 if (is_osr) { 952 mh->set_not_osr_compilable("WhiteBox", comp_level); 953 } else { 954 mh->set_not_compilable("WhiteBox", comp_level); 955 } 956 WB_END 957 958 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method)) 959 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 960 CHECK_JNI_EXCEPTION_(env, 0); 961 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 962 uint cnt = 0; 963 MethodData* mdo = mh->method_data(); 964 if (mdo != nullptr) { 965 cnt = mdo->decompile_count(); 966 } 967 return cnt; 968 WB_END 969 970 // Get the trap count of a method for a specific reason. If the trap count for 971 // that reason did overflow, this includes the overflow trap count of the method. 972 // If 'reason' is null, the sum of the traps for all reasons will be returned. 973 // This number includes the overflow trap count if the trap count for any reason 974 // did overflow. 975 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj)) 976 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 977 CHECK_JNI_EXCEPTION_(env, 0); 978 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 979 uint cnt = 0; 980 MethodData* mdo = mh->method_data(); 981 if (mdo != nullptr) { 982 ResourceMark rm(THREAD); 983 char* reason_str = (reason_obj == nullptr) ? 984 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj)); 985 bool overflow = false; 986 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) { 987 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) { 988 cnt = mdo->trap_count(reason); 989 // Count in the overflow trap count on overflow 990 if (cnt == (uint)-1) { 991 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count(); 992 } 993 break; 994 } else if (reason_str == nullptr) { 995 uint c = mdo->trap_count(reason); 996 if (c == (uint)-1) { 997 c = mdo->trap_count_limit(); 998 if (!overflow) { 999 // Count overflow trap count just once 1000 overflow = true; 1001 c += mdo->overflow_trap_count(); 1002 } 1003 } 1004 cnt += c; 1005 } 1006 } 1007 } 1008 return cnt; 1009 WB_END 1010 1011 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj)) 1012 if (reason_obj == nullptr && action_obj == nullptr) { 1013 return Deoptimization::total_deoptimization_count(); 1014 } 1015 ResourceMark rm(THREAD); 1016 const char *reason_str = (reason_obj == nullptr) ? 1017 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj)); 1018 const char *action_str = (action_obj == nullptr) ? 1019 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj)); 1020 1021 return Deoptimization::deoptimization_count(reason_str, action_str); 1022 WB_END 1023 1024 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 1025 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1026 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 1027 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1028 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 1029 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 1030 WB_END 1031 1032 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1033 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1034 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1035 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1036 bool result = mh->dont_inline(); 1037 mh->set_dont_inline(value == JNI_TRUE); 1038 return result; 1039 WB_END 1040 1041 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 1042 if (comp_level == CompLevel_any) { 1043 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 1044 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 1045 } else { 1046 return CompileBroker::queue_size(comp_level); 1047 } 1048 WB_END 1049 1050 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1051 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1052 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1053 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1054 bool result = mh->force_inline(); 1055 mh->set_force_inline(value == JNI_TRUE); 1056 return result; 1057 WB_END 1058 1059 #ifdef LINUX 1060 bool WhiteBox::validate_cgroup(const char* proc_cgroups, 1061 const char* proc_self_cgroup, 1062 const char* proc_self_mountinfo, 1063 u1* cg_flags) { 1064 CgroupInfo cg_infos[CG_INFO_LENGTH]; 1065 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups, 1066 proc_self_cgroup, 1067 proc_self_mountinfo, cg_flags); 1068 } 1069 #endif 1070 1071 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) { 1072 // Screen for unavailable/bad comp level or null method 1073 AbstractCompiler* comp = CompileBroker::compiler(comp_level); 1074 if (method == nullptr) { 1075 tty->print_cr("WB error: request to compile null method"); 1076 return false; 1077 } 1078 if (comp_level > CompilationPolicy::highest_compile_level()) { 1079 tty->print_cr("WB error: invalid compilation level %d", comp_level); 1080 return false; 1081 } 1082 if (comp == nullptr) { 1083 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level); 1084 return false; 1085 } 1086 1087 // Check if compilation is blocking 1088 methodHandle mh(THREAD, method); 1089 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 1090 bool is_blocking = !directive->BackgroundCompilationOption; 1091 DirectivesStack::release(directive); 1092 1093 // Compile method and check result 1094 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false); 1095 MutexLocker mu(THREAD, Compile_lock); 1096 bool is_queued = mh->queued_for_compilation(); 1097 if ((!is_blocking && is_queued) || nm != nullptr) { 1098 return true; 1099 } 1100 // Check code again because compilation may be finished before Compile_lock is acquired. 1101 if (bci == InvocationEntryBci) { 1102 nmethod* code = mh->code(); 1103 if (code != nullptr) { 1104 return true; 1105 } 1106 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) { 1107 return true; 1108 } 1109 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level); 1110 mh->print_short_name(tty); 1111 tty->cr(); 1112 if (is_blocking && is_queued) { 1113 tty->print_cr("WB error: blocking compilation is still in queue!"); 1114 } 1115 return false; 1116 } 1117 1118 size_t WhiteBox::get_in_use_monitor_count() { 1119 return ObjectSynchronizer::_in_use_list.count(); 1120 } 1121 1122 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 1123 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1124 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1125 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 1126 WB_END 1127 1128 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 1129 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1130 Method* clinit = ik->class_initializer(); 1131 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) { 1132 return false; 1133 } 1134 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD); 1135 WB_END 1136 1137 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 1138 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1139 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1140 1141 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1142 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 1143 bool result = directive->PrintAssemblyOption; 1144 DirectivesStack::release(directive); 1145 1146 return result; 1147 WB_END 1148 1149 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1150 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1151 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1152 1153 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1154 1155 ResourceMark rm(THREAD); 1156 const char* error_msg = nullptr; 1157 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1158 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 1159 1160 if (m == nullptr) { 1161 assert(error_msg != nullptr, "Always have an error message"); 1162 tty->print_cr("Got error: %s", error_msg); 1163 return -1; // Pattern failed 1164 } 1165 1166 // Pattern works - now check if it matches 1167 int result; 1168 if (m->match(mh, InlineMatcher::force_inline)) { 1169 result = 2; // Force inline match 1170 } else if (m->match(mh, InlineMatcher::dont_inline)) { 1171 result = 1; // Dont inline match 1172 } else { 1173 result = 0; // No match 1174 } 1175 delete m; 1176 return result; 1177 WB_END 1178 1179 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1180 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1181 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1182 1183 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1184 1185 ResourceMark rm; 1186 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1187 1188 const char* error_msg = nullptr; 1189 1190 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false); 1191 if (m == nullptr) { 1192 assert(error_msg != nullptr, "Must have error_msg"); 1193 tty->print_cr("Got error: %s", error_msg); 1194 return -1; 1195 } 1196 1197 // Pattern works - now check if it matches 1198 int result = m->matches(mh); 1199 delete m; 1200 assert(result == 0 || result == 1, "Result out of range"); 1201 return result; 1202 WB_END 1203 1204 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method)) 1205 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1206 CHECK_JNI_EXCEPTION(env); 1207 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1208 1209 MethodData* mdo = mh->method_data(); 1210 if (mdo == nullptr) { 1211 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR); 1212 mdo = mh->method_data(); 1213 } 1214 mdo->init(); 1215 InvocationCounter* icnt = mdo->invocation_counter(); 1216 InvocationCounter* bcnt = mdo->backedge_counter(); 1217 // set i-counter according to CompilationPolicy::is_method_profiled 1218 icnt->set(Tier4MinInvocationThreshold); 1219 bcnt->set(Tier4CompileThreshold); 1220 WB_END 1221 1222 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 1223 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1224 CHECK_JNI_EXCEPTION(env); 1225 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1226 MutexLocker mu(THREAD, Compile_lock); 1227 MethodData* mdo = mh->method_data(); 1228 MethodCounters* mcs = mh->method_counters(); 1229 1230 if (mdo != nullptr) { 1231 mdo->init(); 1232 ResourceMark rm(THREAD); 1233 int arg_count = mdo->method()->size_of_parameters(); 1234 for (int i = 0; i < arg_count; i++) { 1235 mdo->set_arg_modified(i, 0); 1236 } 1237 mdo->clean_method_data(/*always_clean*/true); 1238 } 1239 1240 mh->clear_is_not_c1_compilable(); 1241 mh->clear_is_not_c2_compilable(); 1242 mh->clear_is_not_c2_osr_compilable(); 1243 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 1244 if (mcs != nullptr) { 1245 mcs->clear_counters(); 1246 } 1247 WB_END 1248 1249 template <typename T, int type_enum> 1250 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) { 1251 if (name == nullptr) { 1252 return false; 1253 } 1254 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1255 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1256 CHECK_JNI_EXCEPTION_(env, false); 1257 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name); 1258 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value); 1259 env->ReleaseStringUTFChars(name, flag_name); 1260 return (result == JVMFlag::SUCCESS); 1261 } 1262 1263 template <typename T, int type_enum> 1264 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) { 1265 if (name == nullptr) { 1266 return false; 1267 } 1268 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1269 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1270 CHECK_JNI_EXCEPTION_(env, false); 1271 JVMFlag* flag = JVMFlag::find_flag(flag_name); 1272 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL); 1273 env->ReleaseStringUTFChars(name, flag_name); 1274 return (result == JVMFlag::SUCCESS); 1275 } 1276 1277 template <typename T> 1278 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1279 ResourceMark rm(thread); 1280 jclass clazz = env->FindClass(name->as_C_string()); 1281 CHECK_JNI_EXCEPTION_(env, nullptr); 1282 jmethodID methodID = env->GetStaticMethodID(clazz, 1283 vmSymbols::valueOf_name()->as_C_string(), 1284 sig->as_C_string()); 1285 CHECK_JNI_EXCEPTION_(env, nullptr); 1286 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1287 CHECK_JNI_EXCEPTION_(env, nullptr); 1288 return result; 1289 } 1290 1291 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1292 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1293 } 1294 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1295 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1296 } 1297 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1298 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1299 } 1300 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1301 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1302 }*/ 1303 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1304 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1305 } 1306 1307 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1308 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1309 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1310 CHECK_JNI_EXCEPTION_(env, nullptr); 1311 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name); 1312 env->ReleaseStringUTFChars(name, flag_name); 1313 return result; 1314 } 1315 1316 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1317 const JVMFlag* flag = getVMFlag(thread, env, name); 1318 return (flag != nullptr) && flag->is_constant_in_binary(); 1319 WB_END 1320 1321 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name)) 1322 const JVMFlag* flag = getVMFlag(thread, env, name); 1323 return (flag != nullptr) && flag->is_default(); 1324 WB_END 1325 1326 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1327 const JVMFlag* flag = getVMFlag(thread, env, name); 1328 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker()); 1329 WB_END 1330 1331 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1332 bool result; 1333 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) { 1334 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1335 return booleanBox(thread, env, result); 1336 } 1337 return nullptr; 1338 WB_END 1339 1340 template <typename T, int type_enum> 1341 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) { 1342 T result; 1343 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) { 1344 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1345 return longBox(thread, env, result); 1346 } 1347 return nullptr; 1348 } 1349 1350 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1351 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name); 1352 WB_END 1353 1354 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1355 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name); 1356 WB_END 1357 1358 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1359 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name); 1360 WB_END 1361 1362 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1363 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name); 1364 WB_END 1365 1366 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1367 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name); 1368 WB_END 1369 1370 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1371 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name); 1372 WB_END 1373 1374 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1375 double result; 1376 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) { 1377 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1378 return doubleBox(thread, env, result); 1379 } 1380 return nullptr; 1381 WB_END 1382 1383 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1384 ccstr ccstrResult; 1385 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) { 1386 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1387 jstring result = env->NewStringUTF(ccstrResult); 1388 CHECK_JNI_EXCEPTION_(env, nullptr); 1389 return result; 1390 } 1391 return nullptr; 1392 WB_END 1393 1394 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1395 bool result = value == JNI_TRUE ? true : false; 1396 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result); 1397 WB_END 1398 1399 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1400 int result = checked_cast<int>(value); 1401 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result); 1402 WB_END 1403 1404 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1405 uint result = checked_cast<uint>(value); 1406 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result); 1407 WB_END 1408 1409 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1410 intx result = value; 1411 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result); 1412 WB_END 1413 1414 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1415 uintx result = value; 1416 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result); 1417 WB_END 1418 1419 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1420 uint64_t result = value; 1421 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result); 1422 WB_END 1423 1424 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1425 size_t result = value; 1426 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result); 1427 WB_END 1428 1429 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1430 double result = value; 1431 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result); 1432 WB_END 1433 1434 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1435 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1436 const char* ccstrValue; 1437 if (value == nullptr) { 1438 ccstrValue = nullptr; 1439 } 1440 else { 1441 ccstrValue = env->GetStringUTFChars(value, nullptr); 1442 CHECK_JNI_EXCEPTION(env); 1443 } 1444 { 1445 ccstr param = ccstrValue; 1446 ThreadInVMfromNative ttvfn(thread); // back to VM 1447 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) { 1448 assert(param == nullptr, "old value is freed automatically and not returned"); 1449 } 1450 } 1451 if (value != nullptr) { 1452 env->ReleaseStringUTFChars(value, ccstrValue); 1453 } 1454 WB_END 1455 1456 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1457 WhiteBox::compilation_locked = true; 1458 WB_END 1459 1460 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1461 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1462 WhiteBox::compilation_locked = false; 1463 mo.notify_all(); 1464 WB_END 1465 1466 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1467 ResourceMark rm(THREAD); 1468 int len; 1469 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1470 return (StringTable::lookup(name, len) != nullptr); 1471 WB_END 1472 1473 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1474 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1475 Universe::heap()->collect(GCCause::_wb_full_gc); 1476 #if INCLUDE_G1GC || INCLUDE_SERIALGC 1477 if (UseG1GC || UseSerialGC) { 1478 // Needs to be cleared explicitly for G1 and Serial GC. 1479 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1480 } 1481 #endif // INCLUDE_G1GC || INCLUDE_SERIALGC 1482 WB_END 1483 1484 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1485 Universe::heap()->collect(GCCause::_wb_young_gc); 1486 WB_END 1487 1488 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1489 // static+volatile in order to force the read to happen 1490 // (not be eliminated by the compiler) 1491 static char c; 1492 static volatile char* p; 1493 1494 p = os::reserve_memory(os::vm_allocation_granularity()); 1495 if (p == nullptr) { 1496 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1497 } 1498 1499 c = *p; 1500 WB_END 1501 1502 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1503 const char* features = VM_Version::features_string(); 1504 ThreadToNativeFromVM ttn(thread); 1505 jstring features_string = env->NewStringUTF(features); 1506 1507 CHECK_JNI_EXCEPTION_(env, nullptr); 1508 1509 return features_string; 1510 WB_END 1511 1512 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) { 1513 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1514 return CodeCache::get_code_heap(code)->code_blob_type(); 1515 } 1516 1517 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) { 1518 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1519 return CodeCache::get_code_heap(blob_type); 1520 } 1521 1522 struct CodeBlobStub { 1523 CodeBlobStub(const CodeBlob* blob) : 1524 name(os::strdup(blob->name())), 1525 size(blob->size()), 1526 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))), 1527 address((jlong) blob) { } 1528 ~CodeBlobStub() { os::free((void*) name); } 1529 const char* const name; 1530 const jint size; 1531 const jint blob_type; 1532 const jlong address; 1533 }; 1534 1535 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1536 ResourceMark rm; 1537 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1538 CHECK_JNI_EXCEPTION_(env, nullptr); 1539 jobjectArray result = env->NewObjectArray(4, clazz, nullptr); 1540 1541 jstring name = env->NewStringUTF(cb->name); 1542 CHECK_JNI_EXCEPTION_(env, nullptr); 1543 env->SetObjectArrayElement(result, 0, name); 1544 1545 jobject obj = integerBox(thread, env, cb->size); 1546 CHECK_JNI_EXCEPTION_(env, nullptr); 1547 env->SetObjectArrayElement(result, 1, obj); 1548 1549 obj = integerBox(thread, env, cb->blob_type); 1550 CHECK_JNI_EXCEPTION_(env, nullptr); 1551 env->SetObjectArrayElement(result, 2, obj); 1552 1553 obj = longBox(thread, env, cb->address); 1554 CHECK_JNI_EXCEPTION_(env, nullptr); 1555 env->SetObjectArrayElement(result, 3, obj); 1556 1557 return result; 1558 } 1559 1560 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1561 ResourceMark rm(THREAD); 1562 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1563 CHECK_JNI_EXCEPTION_(env, nullptr); 1564 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1565 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1566 jobjectArray result = nullptr; 1567 if (code == nullptr) { 1568 return result; 1569 } 1570 int comp_level = code->comp_level(); 1571 int insts_size = code->insts_size(); 1572 1573 ThreadToNativeFromVM ttn(thread); 1574 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1575 CHECK_JNI_EXCEPTION_(env, nullptr); 1576 result = env->NewObjectArray(5, clazz, nullptr); 1577 if (result == nullptr) { 1578 return result; 1579 } 1580 1581 CodeBlobStub stub(code); 1582 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1583 CHECK_JNI_EXCEPTION_(env, nullptr); 1584 env->SetObjectArrayElement(result, 0, codeBlob); 1585 1586 jobject level = integerBox(thread, env, comp_level); 1587 CHECK_JNI_EXCEPTION_(env, nullptr); 1588 env->SetObjectArrayElement(result, 1, level); 1589 1590 jbyteArray insts = env->NewByteArray(insts_size); 1591 CHECK_JNI_EXCEPTION_(env, nullptr); 1592 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1593 env->SetObjectArrayElement(result, 2, insts); 1594 1595 jobject id = integerBox(thread, env, code->compile_id()); 1596 CHECK_JNI_EXCEPTION_(env, nullptr); 1597 env->SetObjectArrayElement(result, 3, id); 1598 1599 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1600 CHECK_JNI_EXCEPTION_(env, nullptr); 1601 env->SetObjectArrayElement(result, 4, entry_point); 1602 1603 return result; 1604 WB_END 1605 1606 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) { 1607 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1608 BufferBlob* blob; 1609 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1610 if (full_size < size) { 1611 full_size += align_up(size - full_size, oopSize); 1612 } 1613 { 1614 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1615 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1616 if (blob != nullptr) { 1617 ::new (blob) BufferBlob("WB::DummyBlob", CodeBlobKind::Buffer, full_size); 1618 } 1619 } 1620 // Track memory usage statistic after releasing CodeCache_lock 1621 MemoryService::track_code_cache_memory_usage(); 1622 return blob; 1623 } 1624 1625 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1626 if (size < 0) { 1627 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1628 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1629 } 1630 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type)); 1631 WB_END 1632 1633 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1634 if (addr == 0) { 1635 return; 1636 } 1637 BufferBlob::free((BufferBlob*) addr); 1638 WB_END 1639 1640 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1641 ResourceMark rm; 1642 GrowableArray<CodeBlobStub*> blobs; 1643 { 1644 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1645 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type)); 1646 if (heap == nullptr) { 1647 return nullptr; 1648 } 1649 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1650 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) { 1651 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1652 new (stub) CodeBlobStub(cb); 1653 blobs.append(stub); 1654 } 1655 } 1656 ThreadToNativeFromVM ttn(thread); 1657 jobjectArray result = nullptr; 1658 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1659 CHECK_JNI_EXCEPTION_(env, nullptr); 1660 result = env->NewObjectArray(blobs.length(), clazz, nullptr); 1661 CHECK_JNI_EXCEPTION_(env, nullptr); 1662 if (result == nullptr) { 1663 return result; 1664 } 1665 int i = 0; 1666 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1667 it != blobs.end(); ++it) { 1668 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1669 CHECK_JNI_EXCEPTION_(env, nullptr); 1670 env->SetObjectArrayElement(result, i, obj); 1671 CHECK_JNI_EXCEPTION_(env, nullptr); 1672 ++i; 1673 } 1674 return result; 1675 WB_END 1676 1677 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1678 return CompileBroker::get_compilation_activity_mode(); 1679 WB_END 1680 1681 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1682 if (addr == 0) { 1683 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1684 "WB_GetCodeBlob: addr is null"); 1685 } 1686 ThreadToNativeFromVM ttn(thread); 1687 CodeBlobStub stub((CodeBlob*) addr); 1688 return codeBlob2objectArray(thread, env, &stub); 1689 WB_END 1690 1691 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1692 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1693 CHECK_JNI_EXCEPTION_(env, 0); 1694 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1695 return (jlong) mh->method_data(); 1696 WB_END 1697 1698 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1699 return (jlong) thread->stack_size(); 1700 WB_END 1701 1702 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1703 return (jlong) thread->stack_overflow_state()->stack_available( 1704 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size(); 1705 WB_END 1706 1707 1708 int WhiteBox::array_bytes_to_length(size_t bytes) { 1709 return Array<u1>::bytes_to_length(bytes); 1710 } 1711 1712 /////////////// 1713 // MetaspaceTestContext and MetaspaceTestArena 1714 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit)) 1715 metaspace::MetaspaceTestContext* context = 1716 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit); 1717 return (jlong)p2i(context); 1718 WB_END 1719 1720 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1721 delete (metaspace::MetaspaceTestContext*) context; 1722 WB_END 1723 1724 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1725 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1726 context0->purge_area(); 1727 WB_END 1728 1729 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1730 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1731 context0->print_on(tty); 1732 WB_END 1733 1734 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1735 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1736 return context0->committed_words(); 1737 WB_END 1738 1739 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1740 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1741 return context0->used_words(); 1742 WB_END 1743 1744 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro)) 1745 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType; 1746 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1747 return (jlong)p2i(context0->create_arena(type)); 1748 WB_END 1749 1750 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena)) 1751 delete (metaspace::MetaspaceTestArena*) arena; 1752 WB_END 1753 1754 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size)) 1755 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena; 1756 MetaWord* p = arena0->allocate((size_t) word_size); 1757 return (jlong)p2i(p); 1758 WB_END 1759 1760 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size)) 1761 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena; 1762 arena0->deallocate((MetaWord*)p, (size_t) word_size); 1763 WB_END 1764 1765 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb)) 1766 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord; 1767 WB_END 1768 1769 ////////////// 1770 1771 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1772 if (size < 0) { 1773 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1774 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1775 } 1776 1777 oop class_loader_oop = JNIHandles::resolve(class_loader); 1778 ClassLoaderData* cld = class_loader_oop != nullptr 1779 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1780 : ClassLoaderData::the_null_class_loader_data(); 1781 1782 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1783 1784 return (jlong)(uintptr_t)metadata; 1785 WB_END 1786 1787 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1788 jstring version, jstring location, jobjectArray packages)) 1789 Handle h_module (THREAD, JNIHandles::resolve(module)); 1790 Modules::define_module(h_module, is_open, version, location, packages, CHECK); 1791 WB_END 1792 1793 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1794 Handle h_from_module (THREAD, JNIHandles::resolve(from_module)); 1795 Handle h_to_module (THREAD, JNIHandles::resolve(to_module)); 1796 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK); 1797 WB_END 1798 1799 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1800 Handle h_module (THREAD, JNIHandles::resolve(module)); 1801 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK); 1802 WB_END 1803 1804 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1805 Handle h_module (THREAD, JNIHandles::resolve(module)); 1806 Modules::add_module_exports(h_module, package, Handle(), CHECK); 1807 WB_END 1808 1809 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1810 Handle h_from_module (THREAD, JNIHandles::resolve(from_module)); 1811 Handle h_source_module (THREAD, JNIHandles::resolve(source_module)); 1812 Modules::add_reads_module(h_from_module, h_source_module, CHECK); 1813 WB_END 1814 1815 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1816 if (inc < 0) { 1817 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1818 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1819 } 1820 1821 jlong max_size_t = (jlong) ((size_t) -1); 1822 if (inc > max_size_t) { 1823 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1824 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1825 } 1826 1827 size_t new_cap_until_GC = 0; 1828 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1829 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1830 if (!success) { 1831 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1832 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1833 "due to contention with another thread"); 1834 } 1835 return (jlong) new_cap_until_GC; 1836 WB_END 1837 1838 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1839 return (jlong) MetaspaceGC::capacity_until_GC(); 1840 WB_END 1841 1842 // The function is only valid when CDS is available. 1843 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb)) 1844 #if INCLUDE_CDS 1845 return (jlong)MetaspaceShared::core_region_alignment(); 1846 #else 1847 ShouldNotReachHere(); 1848 return 0L; 1849 #endif 1850 WB_END 1851 1852 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1853 oop obj_oop = JNIHandles::resolve(obj); 1854 return (jboolean) obj_oop->mark().has_monitor(); 1855 WB_END 1856 1857 WB_ENTRY(jlong, WB_getInUseMonitorCount(JNIEnv* env, jobject wb)) 1858 return (jlong) WhiteBox::get_in_use_monitor_count(); 1859 WB_END 1860 1861 WB_ENTRY(jint, WB_getLockStackCapacity(JNIEnv* env)) 1862 return (jint) LockStack::CAPACITY; 1863 WB_END 1864 1865 WB_ENTRY(jboolean, WB_supportsRecursiveLightweightLocking(JNIEnv* env)) 1866 return (jboolean) VM_Version::supports_recursive_lightweight_locking(); 1867 WB_END 1868 1869 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb)) 1870 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors"); 1871 return ObjectSynchronizer::request_deflate_idle_monitors_from_wb(); 1872 WB_END 1873 1874 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1875 VM_ForceSafepoint force_safepoint_op; 1876 VMThread::execute(&force_safepoint_op); 1877 WB_END 1878 1879 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb)) 1880 nullStream dev_null; 1881 ClassLoaderStatsVMOperation force_op(&dev_null); 1882 VMThread::execute(&force_op); 1883 WB_END 1884 1885 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1886 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1887 return (jlong) ik->constants(); 1888 WB_END 1889 1890 WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass)) 1891 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1892 objArrayOop resolved_refs= ik->constants()->resolved_references(); 1893 return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs); 1894 WB_END 1895 1896 WB_ENTRY(jint, WB_getFieldEntriesLength(JNIEnv* env, jobject wb, jclass klass)) 1897 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1898 ConstantPool* cp = ik->constants(); 1899 if (cp->cache() == nullptr) { 1900 return -1; 1901 } 1902 return cp->resolved_field_entries_length(); 1903 WB_END 1904 1905 WB_ENTRY(jint, WB_getFieldCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index)) 1906 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1907 ConstantPool* cp = ik->constants(); 1908 if (cp->cache() == nullptr) { 1909 return -1; 1910 } 1911 return cp->resolved_field_entry_at(index)->constant_pool_index(); 1912 WB_END 1913 1914 WB_ENTRY(jint, WB_getMethodEntriesLength(JNIEnv* env, jobject wb, jclass klass)) 1915 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1916 ConstantPool* cp = ik->constants(); 1917 if (cp->cache() == nullptr) { 1918 return -1; 1919 } 1920 return cp->resolved_method_entries_length(); 1921 WB_END 1922 1923 WB_ENTRY(jint, WB_getMethodCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index)) 1924 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1925 ConstantPool* cp = ik->constants(); 1926 if (cp->cache() == nullptr) { 1927 return -1; 1928 } 1929 return cp->resolved_method_entry_at(index)->constant_pool_index(); 1930 WB_END 1931 1932 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass)) 1933 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1934 ConstantPool* cp = ik->constants(); 1935 if (cp->cache() == nullptr) { 1936 return -1; 1937 } 1938 return cp->resolved_indy_entries_length(); 1939 WB_END 1940 1941 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index)) 1942 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1943 ConstantPool* cp = ik->constants(); 1944 if (cp->cache() == nullptr) { 1945 return -1; 1946 } 1947 return cp->resolved_indy_entry_at(index)->constant_pool_index(); 1948 WB_END 1949 1950 WB_ENTRY(jobject, WB_printClasses(JNIEnv* env, jobject wb, jstring class_name_pattern, jint flags)) 1951 ThreadToNativeFromVM ttnfv(thread); 1952 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr); 1953 ResourceMark rm; 1954 stringStream st; 1955 { 1956 ThreadInVMfromNative ttvfn(thread); // back to VM 1957 ClassPrinter::print_classes(c, flags, &st); 1958 } 1959 jstring result = env->NewStringUTF(st.freeze()); 1960 CHECK_JNI_EXCEPTION_(env, nullptr); 1961 return result; 1962 WB_END 1963 1964 WB_ENTRY(jobject, WB_printMethods(JNIEnv* env, jobject wb, jstring class_name_pattern, jstring method_pattern, jint flags)) 1965 ThreadToNativeFromVM ttnfv(thread); 1966 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr); 1967 const char* m = env->GetStringUTFChars(method_pattern, nullptr); 1968 ResourceMark rm; 1969 stringStream st; 1970 { 1971 ThreadInVMfromNative ttvfn(thread); // back to VM 1972 ClassPrinter::print_methods(c, m, flags, &st); 1973 } 1974 jstring result = env->NewStringUTF(st.freeze()); 1975 CHECK_JNI_EXCEPTION_(env, nullptr); 1976 return result; 1977 WB_END 1978 1979 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1980 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1981 VMThread::execute(&clear_ics); 1982 WB_END 1983 1984 template <typename T> 1985 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1986 assert(value != nullptr, "sanity"); 1987 if (method == nullptr || name == nullptr) { 1988 return false; 1989 } 1990 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1991 CHECK_JNI_EXCEPTION_(env, false); 1992 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1993 // can't be in VM when we call JNI 1994 ThreadToNativeFromVM ttnfv(thread); 1995 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1996 CHECK_JNI_EXCEPTION_(env, false); 1997 CompileCommandEnum option = CompilerOracle::string_to_option(flag_name); 1998 env->ReleaseStringUTFChars(name, flag_name); 1999 if (option == CompileCommandEnum::Unknown) { 2000 return false; 2001 } 2002 if (!CompilerOracle::option_matches_type(option, *value)) { 2003 return false; 2004 } 2005 return CompilerOracle::has_option_value(mh, option, *value); 2006 } 2007 2008 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2009 bool result; 2010 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 2011 // can't be in VM when we call JNI 2012 ThreadToNativeFromVM ttnfv(thread); 2013 return booleanBox(thread, env, result); 2014 } 2015 return nullptr; 2016 WB_END 2017 2018 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2019 intx result; 2020 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 2021 // can't be in VM when we call JNI 2022 ThreadToNativeFromVM ttnfv(thread); 2023 return longBox(thread, env, result); 2024 } 2025 return nullptr; 2026 WB_END 2027 2028 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2029 uintx result; 2030 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 2031 // can't be in VM when we call JNI 2032 ThreadToNativeFromVM ttnfv(thread); 2033 return longBox(thread, env, result); 2034 } 2035 return nullptr; 2036 WB_END 2037 2038 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2039 double result; 2040 if (GetMethodOption <double> (thread, env, method, name, &result)) { 2041 // can't be in VM when we call JNI 2042 ThreadToNativeFromVM ttnfv(thread); 2043 return doubleBox(thread, env, result); 2044 } 2045 return nullptr; 2046 WB_END 2047 2048 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2049 ccstr ccstrResult; 2050 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 2051 // can't be in VM when we call JNI 2052 ThreadToNativeFromVM ttnfv(thread); 2053 jstring result = env->NewStringUTF(ccstrResult); 2054 CHECK_JNI_EXCEPTION_(env, nullptr); 2055 return result; 2056 } 2057 return nullptr; 2058 WB_END 2059 2060 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb)) 2061 const char* p = CDSConfig::default_archive_path(); 2062 ThreadToNativeFromVM ttn(thread); 2063 jstring path_string = env->NewStringUTF(p); 2064 2065 CHECK_JNI_EXCEPTION_(env, nullptr); 2066 2067 return path_string; 2068 WB_END 2069 2070 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb)) 2071 return CDSConfig::is_using_archive(); 2072 WB_END 2073 2074 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb)) 2075 #if INCLUDE_CDS 2076 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION; 2077 #else 2078 ShouldNotReachHere(); 2079 return (jint)-1; 2080 #endif 2081 WB_END 2082 2083 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb)) 2084 #if INCLUDE_CDS 2085 return (jint)CURRENT_CDS_ARCHIVE_VERSION; 2086 #else 2087 ShouldNotReachHere(); 2088 return (jint)-1; 2089 #endif 2090 WB_END 2091 2092 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb)) 2093 return FileMapInfo::memory_mapping_failed(); 2094 WB_END 2095 2096 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str)) 2097 ResourceMark rm(THREAD); 2098 oop str_oop = JNIHandles::resolve(str); 2099 int length; 2100 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false)); 2101 return StringTable::lookup_shared(chars, length) == str_oop; 2102 WB_END 2103 2104 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 2105 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2106 WB_END 2107 2108 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env)) 2109 return ArchiveHeapLoader::is_mapped(); 2110 WB_END 2111 2112 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz)) 2113 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 2114 if (!k->is_instance_klass()) { 2115 return; 2116 } 2117 InstanceKlass *ik = InstanceKlass::cast(k); 2118 ik->link_class(THREAD); // may throw verification error 2119 WB_END 2120 2121 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 2122 return ArchiveHeapLoader::is_mapped(); 2123 WB_END 2124 2125 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env)) 2126 #if INCLUDE_CDS 2127 // An exploded build inhibits use of CDS. Therefore, for the 2128 // purpose of testing, the JVM can be treated as not having CDS 2129 // built in at all. 2130 return ClassLoader::has_jrt_entry(); 2131 #else 2132 return false; 2133 #endif // INCLUDE_CDS 2134 WB_END 2135 2136 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env)) 2137 #if COMPILER2_OR_JVMCI 2138 return true; 2139 #else 2140 return false; 2141 #endif 2142 WB_END 2143 2144 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env)) 2145 #if INCLUDE_JVMCI 2146 return JVMCIGlobals::gc_supports_jvmci(); 2147 #else 2148 return false; 2149 #endif 2150 WB_END 2151 2152 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env)) 2153 return HeapShared::can_write(); 2154 WB_END 2155 2156 2157 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env)) 2158 #if INCLUDE_JFR 2159 return true; 2160 #else 2161 return false; 2162 #endif // INCLUDE_JFR 2163 WB_END 2164 2165 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env)) 2166 #if defined(DTRACE_ENABLED) 2167 return true; 2168 #else 2169 return false; 2170 #endif // DTRACE_ENABLED 2171 WB_END 2172 2173 #if INCLUDE_CDS 2174 2175 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name)) 2176 ResourceMark rm; 2177 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 2178 jint result = (jint)CDSConstants::get_cds_offset(c_name); 2179 return result; 2180 WB_END 2181 2182 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name)) 2183 ResourceMark rm; 2184 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 2185 jint result = (jint)CDSConstants::get_cds_constant(c_name); 2186 return result; 2187 WB_END 2188 2189 #endif // INCLUDE_CDS 2190 2191 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle)) 2192 class ReadMonitorsClosure : public HandshakeClosure { 2193 jboolean _executed; 2194 2195 void do_thread(Thread* th) { 2196 JavaThread* jt = JavaThread::cast(th); 2197 ResourceMark rm; 2198 2199 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>(); 2200 2201 if (!jt->has_last_Java_frame()) { 2202 return; 2203 } 2204 RegisterMap rmap(jt, 2205 RegisterMap::UpdateMap::include, 2206 RegisterMap::ProcessFrames::include, 2207 RegisterMap::WalkContinuation::skip); 2208 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) { 2209 GrowableArray<MonitorInfo*> *monitors = vf->monitors(); 2210 if (monitors != nullptr) { 2211 int len = monitors->length(); 2212 // Walk monitors youngest to oldest 2213 for (int i = len - 1; i >= 0; i--) { 2214 MonitorInfo* mon_info = monitors->at(i); 2215 if (mon_info->eliminated()) continue; 2216 oop owner = mon_info->owner(); 2217 if (owner != nullptr) { 2218 info->append(mon_info); 2219 } 2220 } 2221 } 2222 } 2223 _executed = true; 2224 } 2225 2226 public: 2227 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {} 2228 jboolean executed() const { return _executed; } 2229 }; 2230 2231 ReadMonitorsClosure rmc; 2232 if (thread_handle != nullptr) { 2233 ThreadsListHandle tlh; 2234 JavaThread* target = nullptr; 2235 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2236 if (is_alive) { 2237 Handshake::execute(&rmc, &tlh, target); 2238 } 2239 } 2240 return rmc.executed(); 2241 WB_END 2242 2243 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 2244 class TraceSelfClosure : public HandshakeClosure { 2245 jint _num_threads_completed; 2246 2247 void do_thread(Thread* th) { 2248 JavaThread* jt = JavaThread::cast(th); 2249 ResourceMark rm; 2250 2251 jt->print_on(tty); 2252 jt->print_stack_on(tty); 2253 tty->cr(); 2254 Atomic::inc(&_num_threads_completed); 2255 } 2256 2257 public: 2258 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {} 2259 2260 jint num_threads_completed() const { return _num_threads_completed; } 2261 }; 2262 TraceSelfClosure tsc(Thread::current()); 2263 2264 if (all_threads) { 2265 Handshake::execute(&tsc); 2266 } else if (thread_handle != nullptr) { 2267 ThreadsListHandle tlh; 2268 JavaThread* target = nullptr; 2269 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2270 if (is_alive) { 2271 Handshake::execute(&tsc, &tlh, target); 2272 } 2273 } 2274 return tsc.num_threads_completed(); 2275 WB_END 2276 2277 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle)) 2278 class TraceSelfClosure : public AsyncHandshakeClosure { 2279 JavaThread* _self; 2280 void do_thread(Thread* th) { 2281 assert(th->is_Java_thread(), "sanity"); 2282 // AsynchHandshake handshakes are only executed by target. 2283 assert(_self == th, "Must be"); 2284 assert(Thread::current() == th, "Must be"); 2285 JavaThread* jt = JavaThread::cast(th); 2286 ResourceMark rm; 2287 jt->print_on(tty); 2288 jt->print_stack_on(tty); 2289 tty->cr(); 2290 } 2291 2292 public: 2293 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {} 2294 }; 2295 if (thread_handle != nullptr) { 2296 ThreadsListHandle tlh; 2297 JavaThread* target = nullptr; 2298 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2299 if (is_alive) { 2300 TraceSelfClosure* tsc = new TraceSelfClosure(target); 2301 Handshake::execute(tsc, target); 2302 } 2303 } 2304 WB_END 2305 2306 static volatile int _emulated_lock = 0; 2307 2308 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender)) 2309 JavaThread* self = JavaThread::current(); 2310 2311 { 2312 // Before trying to acquire the lock transition into a safepoint safe state. 2313 // Otherwise if either suspender or suspendee blocks for a safepoint 2314 // in ~ThreadBlockInVM the other one could loop forever trying to acquire 2315 // the lock without allowing the safepoint to progress. 2316 ThreadBlockInVM tbivm(self); 2317 2318 // We will deadlock here if we are 'suspender' and 'suspendee' 2319 // suspended in ~ThreadBlockInVM. This verifies we only suspend 2320 // at the right place. 2321 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {} 2322 assert(_emulated_lock == 1, "Must be locked"); 2323 2324 // Sleep much longer in suspendee to force situation where 2325 // 'suspender' is waiting above to acquire lock. 2326 os::naked_short_sleep(suspender ? 1 : 10); 2327 } 2328 Atomic::store(&_emulated_lock, 0); 2329 WB_END 2330 2331 // Some convenience methods to deal with objects from java 2332 int WhiteBox::offset_for_field(const char* field_name, oop object, 2333 Symbol* signature_symbol) { 2334 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid"); 2335 2336 //Get the class of our object 2337 Klass* arg_klass = object->klass(); 2338 //Turn it into an instance-klass 2339 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 2340 2341 //Create symbols to look for in the class 2342 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name); 2343 2344 //To be filled in with an offset of the field we're looking for 2345 fieldDescriptor fd; 2346 2347 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 2348 if (res == nullptr) { 2349 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 2350 name_symbol->as_C_string()); 2351 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 2352 } 2353 2354 //fetch the field at the offset we've found 2355 int dest_offset = fd.offset(); 2356 2357 return dest_offset; 2358 } 2359 2360 2361 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 2362 int offset = offset_for_field(field_name, object, 2363 vmSymbols::string_signature()); 2364 oop string = object->obj_field(offset); 2365 if (string == nullptr) { 2366 return nullptr; 2367 } 2368 const char* ret = java_lang_String::as_utf8_string(string); 2369 return ret; 2370 } 2371 2372 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 2373 int offset = 2374 offset_for_field(field_name, object, vmSymbols::bool_signature()); 2375 bool ret = (object->bool_field(offset) == JNI_TRUE); 2376 return ret; 2377 } 2378 2379 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 2380 ResourceMark rm; 2381 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass)); 2382 const char* klass_name = klass->external_name(); 2383 2384 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 2385 2386 // one by one registration natives for exception catching 2387 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 2388 CHECK_JNI_EXCEPTION(env); 2389 for (int i = 0, n = method_count; i < n; ++i) { 2390 // Skip dummy entries 2391 if (method_array[i].fnPtr == nullptr) continue; 2392 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 2393 jthrowable throwable_obj = env->ExceptionOccurred(); 2394 if (throwable_obj != nullptr) { 2395 env->ExceptionClear(); 2396 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 2397 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 2398 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 2399 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s", 2400 klass_name, method_array[i].name, method_array[i].signature); 2401 } 2402 } else { 2403 // Registration failed unexpectedly. 2404 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered", 2405 klass_name, method_array[i].name, method_array[i].signature); 2406 env->UnregisterNatives(wbclass); 2407 break; 2408 } 2409 } 2410 } 2411 } 2412 2413 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 2414 // can't be in VM when we call JNI 2415 ThreadToNativeFromVM ttnfv(thread); 2416 const char* dir = env->GetStringUTFChars(compDirect, nullptr); 2417 CHECK_JNI_EXCEPTION_(env, 0); 2418 int ret; 2419 { 2420 ThreadInVMfromNative ttvfn(thread); // back to VM 2421 ret = DirectivesParser::parse_string(dir, tty); 2422 } 2423 env->ReleaseStringUTFChars(compDirect, dir); 2424 // -1 for error parsing directive. Return 0 as number of directives added. 2425 if (ret == -1) { 2426 ret = 0; 2427 } 2428 return (jint) ret; 2429 WB_END 2430 2431 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 2432 DirectivesStack::pop(count); 2433 WB_END 2434 2435 // Checks that the library libfile has the noexecstack bit set. 2436 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 2437 jboolean ret = false; 2438 #ifdef LINUX 2439 // Can't be in VM when we call JNI. 2440 ThreadToNativeFromVM ttnfv(thread); 2441 const char* lf = env->GetStringUTFChars(libfile, nullptr); 2442 CHECK_JNI_EXCEPTION_(env, 0); 2443 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 2444 env->ReleaseStringUTFChars(libfile, lf); 2445 #endif 2446 return ret; 2447 WB_END 2448 2449 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 2450 LINUX_ONLY(return OSContainer::is_containerized();) 2451 return false; 2452 WB_END 2453 2454 // Physical memory of the host machine (including containers) 2455 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o)) 2456 LINUX_ONLY(return os::Linux::physical_memory();) 2457 return os::physical_memory(); 2458 WB_END 2459 2460 // Physical swap of the host machine (including containers), Linux only. 2461 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o)) 2462 LINUX_ONLY(return (jlong)os::Linux::host_swap();) 2463 return -1; // Not used/implemented on other platforms 2464 WB_END 2465 2466 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env, 2467 jobject o, 2468 jstring proc_cgroups, 2469 jstring proc_self_cgroup, 2470 jstring proc_self_mountinfo)) 2471 jint ret = 0; 2472 #ifdef LINUX 2473 ThreadToNativeFromVM ttnfv(thread); 2474 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, nullptr); 2475 CHECK_JNI_EXCEPTION_(env, 0); 2476 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr); 2477 CHECK_JNI_EXCEPTION_(env, 0); 2478 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr); 2479 CHECK_JNI_EXCEPTION_(env, 0); 2480 u1 cg_type_flags = 0; 2481 // This sets cg_type_flags 2482 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags); 2483 ret = (jint)cg_type_flags; 2484 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups); 2485 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup); 2486 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo); 2487 #endif 2488 return ret; 2489 WB_END 2490 2491 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 2492 os::print_os_info(tty); 2493 WB_END 2494 2495 // Elf decoder 2496 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 2497 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 2498 ElfFile::_do_not_cache_elf_section = true; 2499 #endif 2500 WB_END 2501 2502 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o)) 2503 return (jlong) ResolvedMethodTable::items_count(); 2504 WB_END 2505 2506 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o)) 2507 return (jint) ProtectionDomainCacheTable::removed_entries_count(); 2508 WB_END 2509 2510 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror)) 2511 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror)); 2512 // Return size in bytes. 2513 return k->size() * wordSize; 2514 WB_END 2515 2516 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java. 2517 // It explains how the thread's priority field is used for test state coordination. 2518 // 2519 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle)) 2520 oop target_oop = JNIHandles::resolve_non_null(target_handle); 2521 jlong tid = java_lang_Thread::thread_id(target_oop); 2522 JavaThread* target = java_lang_Thread::thread(target_oop); 2523 2524 // Grab a ThreadsListHandle to protect the target thread whilst terminating 2525 ThreadsListHandle tlh; 2526 2527 // Look up the target thread by tid to ensure it is present 2528 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid); 2529 if (t == nullptr) { 2530 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!"); 2531 } 2532 2533 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected"); 2534 // Allow target to terminate by boosting priority 2535 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1)); 2536 2537 // Now wait for the target to terminate 2538 while (!target->is_terminated()) { 2539 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint 2540 os::naked_short_sleep(0); 2541 } 2542 2543 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated"); 2544 2545 // Now release the GC inducing thread - we have to re-resolve the external oop that 2546 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now. 2547 oop original = JNIHandles::resolve_non_null(target_handle); 2548 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2)); 2549 2550 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:"); 2551 2552 // The Java code should be creating garbage and triggering GC, which would potentially move 2553 // the threadObj oop. If the exiting thread is properly protected then its threadObj should 2554 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to 2555 // kick in. 2556 for (int i = 0; i < 5; i++) { 2557 oop original = JNIHandles::resolve_non_null(target_handle); 2558 oop current = t->threadObj(); 2559 if (original != current) { 2560 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i); 2561 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!"); 2562 } else { 2563 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i); 2564 ThreadBlockInVM tbivm(thread); 2565 os::naked_short_sleep(50); 2566 } 2567 } 2568 WB_END 2569 2570 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map)) 2571 ResourceMark rm; // for verify 2572 stringStream st; 2573 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) { 2574 frame* current_frame = fst.current(); 2575 if (log) { 2576 current_frame->print_value_on(&st, nullptr); 2577 } 2578 current_frame->verify(fst.register_map()); 2579 } 2580 if (log) { 2581 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames"); 2582 tty->print_raw(st.freeze()); 2583 tty->print_cr("[WhiteBox::VerifyFrames] Done"); 2584 } 2585 WB_END 2586 2587 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb)) 2588 #if INCLUDE_JVMTI 2589 return JNI_TRUE; 2590 #else 2591 return JNI_FALSE; 2592 #endif 2593 WB_END 2594 2595 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time)) 2596 os::naked_short_sleep(time); 2597 WB_END 2598 2599 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o)) 2600 ThreadToNativeFromVM ttn(thread); 2601 jstring info_string = env->NewStringUTF(XSTR(LIBC)); 2602 CHECK_JNI_EXCEPTION_(env, nullptr); 2603 return info_string; 2604 WB_END 2605 2606 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb)) 2607 GCLocker::lock_critical(thread); 2608 WB_END 2609 2610 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb)) 2611 GCLocker::unlock_critical(thread); 2612 WB_END 2613 2614 WB_ENTRY(void, WB_PinObject(JNIEnv* env, jobject wb, jobject o)) 2615 #if INCLUDE_G1GC 2616 if (!UseG1GC) { 2617 ShouldNotReachHere(); 2618 return; 2619 } 2620 oop obj = JNIHandles::resolve(o); 2621 G1CollectedHeap::heap()->pin_object(thread, obj); 2622 #else 2623 ShouldNotReachHere(); 2624 #endif // INCLUDE_G1GC 2625 WB_END 2626 2627 WB_ENTRY(void, WB_UnpinObject(JNIEnv* env, jobject wb, jobject o)) 2628 #if INCLUDE_G1GC 2629 if (!UseG1GC) { 2630 ShouldNotReachHere(); 2631 return; 2632 } 2633 oop obj = JNIHandles::resolve(o); 2634 G1CollectedHeap::heap()->unpin_object(thread, obj); 2635 #else 2636 ShouldNotReachHere(); 2637 #endif // INCLUDE_G1GC 2638 WB_END 2639 2640 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable)) 2641 if (!Continuations::enabled()) { 2642 tty->print_cr("WB error: must be Continuations::enabled()!"); 2643 return JNI_FALSE; 2644 } 2645 jboolean result = false; 2646 #if INCLUDE_JVMTI 2647 if (enable) { 2648 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti(); 2649 } else { 2650 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti(); 2651 } 2652 #endif 2653 return result; 2654 WB_END 2655 2656 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size)) 2657 void* const from = (void*)addr; 2658 void* const to = (void*)(addr + size); 2659 if (from > to) { 2660 os::pretouch_memory(from, to, os::vm_page_size()); 2661 } 2662 WB_END 2663 2664 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target)) 2665 ClassLoaderDataGraph::safepoint_and_clean_metaspaces(); 2666 WB_END 2667 2668 // Reports resident set size (RSS) in bytes 2669 WB_ENTRY(jlong, WB_Rss(JNIEnv* env, jobject o)) 2670 return os::rss(); 2671 WB_END 2672 2673 #define CC (char*) 2674 2675 static JNINativeMethod methods[] = { 2676 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 2677 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 2678 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 2679 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 2680 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 2681 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 2682 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 2683 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 2684 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 2685 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses }, 2686 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount }, 2687 {CC"parseCommandLine0", 2688 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;", 2689 (void*) &WB_ParseCommandLine 2690 }, 2691 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2692 (void*)&WB_AddToBootstrapClassLoaderSearch}, 2693 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2694 (void*)&WB_AddToSystemClassLoaderSearch}, 2695 {CC"getCompressedOopsMaxHeapSize", CC"()J", 2696 (void*)&WB_GetCompressedOopsMaxHeapSize}, 2697 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 2698 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 2699 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 2700 #if INCLUDE_CDS 2701 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName}, 2702 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName}, 2703 #endif 2704 #if INCLUDE_G1GC 2705 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 2706 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles}, 2707 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 2708 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 2709 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 2710 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 2711 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 2712 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 2713 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit}, 2714 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 2715 (void*)&WB_G1AuxiliaryMemoryUsage }, 2716 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount }, 2717 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds }, 2718 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 2719 #endif // INCLUDE_G1GC 2720 #if INCLUDE_PARALLELGC 2721 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 2722 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 2723 #endif 2724 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 2725 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 2726 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType}, 2727 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 2728 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 2729 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 2730 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 2731 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 2732 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 2733 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 2734 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena }, 2735 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena }, 2736 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc }, 2737 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 2738 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized}, 2739 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 2740 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 2741 (void*)&WB_DeoptimizeMethod }, 2742 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 2743 (void*)&WB_IsMethodCompiled }, 2744 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 2745 (void*)&WB_IsMethodCompilable}, 2746 {CC"isMethodQueuedForCompilation0", 2747 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 2748 {CC"isIntrinsicAvailable0", 2749 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2750 (void*)&WB_IsIntrinsicAvailable}, 2751 {CC"makeMethodNotCompilable0", 2752 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2753 {CC"testSetDontInlineMethod0", 2754 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2755 {CC"getMethodCompilationLevel0", 2756 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2757 {CC"getMethodDecompileCount0", 2758 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount}, 2759 {CC"getMethodTrapCount0", 2760 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2761 (void*)&WB_GetMethodTrapCount}, 2762 {CC"getDeoptCount0", 2763 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount}, 2764 {CC"getMethodEntryBci0", 2765 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2766 {CC"getCompileQueueSize", 2767 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2768 {CC"testSetForceInlineMethod0", 2769 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2770 {CC"enqueueMethodForCompilation0", 2771 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2772 {CC"enqueueInitializerForCompilation0", 2773 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2774 {CC"markMethodProfiled", 2775 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled}, 2776 {CC"clearMethodState0", 2777 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2778 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2779 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2780 {CC"matchesMethod", 2781 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2782 (void*)&WB_MatchesMethod}, 2783 {CC"matchesInline", 2784 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2785 (void*)&WB_MatchesInline}, 2786 {CC"shouldPrintAssembly", 2787 CC"(Ljava/lang/reflect/Executable;I)Z", 2788 (void*)&WB_ShouldPrintAssembly}, 2789 2790 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2791 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag}, 2792 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2793 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2794 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2795 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2796 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2797 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2798 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2799 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2800 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2801 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2802 (void*)&WB_SetStringVMFlag}, 2803 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2804 (void*)&WB_GetBooleanVMFlag}, 2805 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2806 (void*)&WB_GetIntVMFlag}, 2807 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2808 (void*)&WB_GetUintVMFlag}, 2809 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2810 (void*)&WB_GetIntxVMFlag}, 2811 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2812 (void*)&WB_GetUintxVMFlag}, 2813 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2814 (void*)&WB_GetUint64VMFlag}, 2815 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2816 (void*)&WB_GetSizeTVMFlag}, 2817 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2818 (void*)&WB_GetDoubleVMFlag}, 2819 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2820 (void*)&WB_GetStringVMFlag}, 2821 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2822 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2823 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2824 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2825 {CC"allocateMetaspace", 2826 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2827 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2828 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2829 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment }, 2830 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2831 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2832 (void*)&WB_GetNMethod }, 2833 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2834 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2835 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2836 {CC"getCompilationActivityMode", 2837 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2838 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2839 (void*)&WB_GetMethodData }, 2840 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2841 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2842 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2843 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2844 (void*)&WB_DefineModule }, 2845 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2846 (void*)&WB_AddModuleExports }, 2847 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2848 (void*)&WB_AddReadsModule }, 2849 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2850 (void*)&WB_AddModuleExportsToAllUnnamed }, 2851 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2852 (void*)&WB_AddModuleExportsToAll }, 2853 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors }, 2854 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2855 {CC"getInUseMonitorCount", CC"()J", (void*)&WB_getInUseMonitorCount }, 2856 {CC"getLockStackCapacity", CC"()I", (void*)&WB_getLockStackCapacity }, 2857 {CC"supportsRecursiveLightweightLocking", CC"()Z", (void*)&WB_supportsRecursiveLightweightLocking }, 2858 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2859 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint }, 2860 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2861 {CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 2862 {CC"getFieldEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getFieldEntriesLength}, 2863 {CC"getFieldCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getFieldCPIndex}, 2864 {CC"getMethodEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getMethodEntriesLength}, 2865 {CC"getMethodCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getMethodCPIndex}, 2866 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength}, 2867 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex}, 2868 {CC"printClasses0", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printClasses}, 2869 {CC"printMethods0", CC"(Ljava/lang/String;Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printMethods}, 2870 {CC"getMethodBooleanOption", 2871 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2872 (void*)&WB_GetMethodBooleaneOption}, 2873 {CC"getMethodIntxOption", 2874 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2875 (void*)&WB_GetMethodIntxOption}, 2876 {CC"getMethodUintxOption", 2877 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2878 (void*)&WB_GetMethodUintxOption}, 2879 {CC"getMethodDoubleOption", 2880 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2881 (void*)&WB_GetMethodDoubleOption}, 2882 {CC"getMethodStringOption", 2883 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2884 (void*)&WB_GetMethodStringOption}, 2885 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;", 2886 (void*)&WB_GetDefaultArchivePath}, 2887 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion}, 2888 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion}, 2889 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled}, 2890 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString }, 2891 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2892 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped }, 2893 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass}, 2894 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2895 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded }, 2896 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded }, 2897 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded }, 2898 {CC"hasLibgraal", CC"()Z", (void*)&WB_HasLibgraal }, 2899 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded }, 2900 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC}, 2901 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive }, 2902 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed }, 2903 2904 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2905 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors }, 2906 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2907 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack }, 2908 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock}, 2909 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread }, 2910 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames }, 2911 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2912 (void*)&WB_AddCompilerDirective }, 2913 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2914 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported}, 2915 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler}, 2916 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected}, 2917 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically}, 2918 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints}, 2919 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl}, 2920 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl}, 2921 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle}, 2922 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z", 2923 (void*)&WB_ConcurrentGCRunTo}, 2924 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2925 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2926 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2927 {CC"validateCgroup", 2928 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I", 2929 (void*)&WB_ValidateCgroup }, 2930 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory }, 2931 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap }, 2932 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2933 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 2934 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount }, 2935 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount }, 2936 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize}, 2937 2938 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext}, 2939 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext}, 2940 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext}, 2941 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext}, 2942 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext}, 2943 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext}, 2944 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext}, 2945 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena}, 2946 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena}, 2947 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena}, 2948 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize}, 2949 2950 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded}, 2951 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe}, 2952 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName}, 2953 2954 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical}, 2955 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical}, 2956 {CC"pinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_PinObject}, 2957 {CC"unpinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_UnpinObject}, 2958 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode}, 2959 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory}, 2960 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces}, 2961 {CC"rss", CC"()J", (void*)&WB_Rss}, 2962 }; 2963 2964 2965 #undef CC 2966 2967 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2968 { 2969 if (WhiteBoxAPI) { 2970 // Make sure that wbclass is loaded by the null classloader 2971 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass))); 2972 Handle loader(THREAD, ik->class_loader()); 2973 if (loader.is_null()) { 2974 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2975 WhiteBox::set_used(); 2976 } 2977 } 2978 } 2979 JVM_END