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 WB_ENTRY(jstring, WB_PrintString(JNIEnv* env, jobject wb, jstring str, jint max_length)) 183 ResourceMark rm(THREAD); 184 stringStream sb; 185 java_lang_String::print(JNIHandles::resolve(str), &sb, max_length); 186 oop result = java_lang_String::create_oop_from_str(sb.as_string(), THREAD); 187 return (jstring) JNIHandles::make_local(THREAD, result); 188 WB_END 189 190 class WBIsKlassAliveClosure : public LockedClassesDo { 191 Symbol* _name; 192 int _count; 193 public: 194 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {} 195 196 void do_klass(Klass* k) { 197 Symbol* ksym = k->name(); 198 if (ksym->fast_compare(_name) == 0) { 199 _count++; 200 } else if (k->is_instance_klass()) { 201 // Need special handling for hidden classes because the JVM 202 // appends "+<hex-address>" to hidden class names. 203 InstanceKlass *ik = InstanceKlass::cast(k); 204 if (ik->is_hidden()) { 205 ResourceMark rm; 206 char* k_name = ksym->as_C_string(); 207 // Find the first '+' char and truncate the string at that point. 208 // NOTE: This will not work correctly if the original hidden class 209 // name contains a '+'. 210 char* plus_char = strchr(k_name, '+'); 211 if (plus_char != nullptr) { 212 *plus_char = 0; 213 char* c_name = _name->as_C_string(); 214 if (strcmp(c_name, k_name) == 0) { 215 _count++; 216 } 217 } 218 } 219 } 220 } 221 222 int count() const { 223 return _count; 224 } 225 }; 226 227 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name)) 228 oop h_name = JNIHandles::resolve(name); 229 if (h_name == nullptr) { 230 return 0; 231 } 232 Symbol* sym = java_lang_String::as_symbol(h_name); 233 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 234 235 WBIsKlassAliveClosure closure(sym); 236 ClassLoaderDataGraph::classes_do(&closure); 237 238 // Return the count of alive classes with this name. 239 return closure.count(); 240 WB_END 241 242 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name)) 243 oop h_name = JNIHandles::resolve(name); 244 if (h_name == nullptr) { 245 return 0; 246 } 247 Symbol* sym = java_lang_String::as_symbol(h_name); 248 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 249 return (jint)sym->refcount(); 250 WB_END 251 252 253 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 254 #if INCLUDE_JVMTI 255 ResourceMark rm; 256 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 257 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 258 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 259 assert(err == JVMTI_ERROR_NONE, "must not fail"); 260 #endif 261 } 262 WB_END 263 264 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 265 #if INCLUDE_JVMTI 266 ResourceMark rm; 267 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 268 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 269 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 270 assert(err == JVMTI_ERROR_NONE, "must not fail"); 271 #endif 272 } 273 WB_END 274 275 276 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 277 return (jlong)Arguments::max_heap_for_compressed_oops(); 278 } 279 WB_END 280 281 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 282 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " " 283 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 284 MinHeapSize, 285 InitialHeapSize, 286 MaxHeapSize, 287 SpaceAlignment, 288 HeapAlignment); 289 } 290 WB_END 291 292 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 293 size_t granularity = os::vm_allocation_granularity(); 294 ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size()); 295 VirtualSpace vs; 296 vs.initialize(rhs, 50 * granularity); 297 298 // Check if constraints are complied 299 if (!( UseCompressedOops && rhs.base() != nullptr && 300 CompressedOops::base() != nullptr && 301 CompressedOops::use_implicit_null_checks() )) { 302 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 303 "\tUseCompressedOops is %d\n" 304 "\trhs.base() is " PTR_FORMAT "\n" 305 "\tCompressedOops::base() is " PTR_FORMAT "\n" 306 "\tCompressedOops::use_implicit_null_checks() is %d", 307 UseCompressedOops, 308 p2i(rhs.base()), 309 p2i(CompressedOops::base()), 310 CompressedOops::use_implicit_null_checks()); 311 return; 312 } 313 tty->print_cr("Reading from no access area... "); 314 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 315 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 316 WB_END 317 318 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 319 size_t magnitude, size_t iterations) { 320 size_t granularity = os::vm_allocation_granularity(); 321 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size()); 322 VirtualSpace vs; 323 if (!vs.initialize(rhs, 0)) { 324 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 325 return 3; 326 } 327 328 int seed = os::random(); 329 tty->print_cr("Random seed is %d", seed); 330 331 for (size_t i = 0; i < iterations; i++) { 332 333 // Whether we will shrink or grow 334 bool shrink = os::random() % 2L == 0; 335 336 // Get random delta to resize virtual space 337 size_t delta = (size_t)os::random() % magnitude; 338 339 // If we are about to shrink virtual space below zero, then expand instead 340 if (shrink && vs.committed_size() < delta) { 341 shrink = false; 342 } 343 344 // Resizing by delta 345 if (shrink) { 346 vs.shrink_by(delta); 347 } else { 348 // If expanding fails expand_by will silently return false 349 vs.expand_by(delta, true); 350 } 351 } 352 return 0; 353 } 354 355 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 356 jlong reserved_space_size, jlong magnitude, jlong iterations)) 357 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 358 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 359 iterations); 360 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 361 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 362 return 1; 363 } 364 365 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 366 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 367 if (sizeof(size_t) < sizeof(jlong)) { 368 jlong size_t_max_value = (jlong)SIZE_MAX; 369 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 370 || iterations > size_t_max_value) { 371 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 372 return 2; 373 } 374 } 375 376 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 377 (size_t) magnitude, (size_t) iterations); 378 WB_END 379 380 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name)) 381 return GCConfig::is_gc_supported((CollectedHeap::Name)name); 382 WB_END 383 384 WB_ENTRY(jboolean, WB_HasLibgraal(JNIEnv* env, jobject o)) 385 #if INCLUDE_JVMCI 386 return JVMCI::shared_library_exists(); 387 #endif 388 return false; 389 WB_END 390 391 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name)) 392 #if INCLUDE_JVMCI 393 if (EnableJVMCI) { 394 // Enter the JVMCI env that will be used by the CompileBroker. 395 JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__); 396 return jvmciEnv.init_error() == JNI_OK && jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name); 397 } 398 #endif 399 return false; 400 WB_END 401 402 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name)) 403 return GCConfig::is_gc_selected((CollectedHeap::Name)name); 404 WB_END 405 406 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o)) 407 return GCConfig::is_gc_selected_ergonomically(); 408 WB_END 409 410 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 411 oop p = JNIHandles::resolve(obj); 412 #if INCLUDE_G1GC 413 if (UseG1GC) { 414 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 415 const G1HeapRegion* hr = g1h->heap_region_containing(p); 416 return hr->is_old_or_humongous(); 417 } 418 #endif 419 #if INCLUDE_PARALLELGC 420 if (UseParallelGC) { 421 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 422 return !psh->is_in_young(p); 423 } 424 #endif 425 #if INCLUDE_ZGC 426 if (UseZGC) { 427 if (ZGenerational) { 428 return ZHeap::heap()->is_old(to_zaddress(p)); 429 } else { 430 return Universe::heap()->is_in(p); 431 } 432 } 433 #endif 434 #if INCLUDE_SHENANDOAHGC 435 if (UseShenandoahGC) { 436 return Universe::heap()->is_in(p); 437 } 438 #endif 439 #if INCLUDE_SERIALGC 440 if (UseSerialGC) { 441 return !SerialHeap::heap()->is_in_young(p); 442 } 443 #endif 444 ShouldNotReachHere(); 445 return false; 446 WB_END 447 448 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 449 oop p = JNIHandles::resolve(obj); 450 return p->size() * HeapWordSize; 451 WB_END 452 453 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 454 return (jlong)SpaceAlignment; 455 WB_END 456 457 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 458 return (jlong)HeapAlignment; 459 WB_END 460 461 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o)) 462 return Universe::heap()->supports_concurrent_gc_breakpoints(); 463 WB_END 464 465 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o)) 466 ConcurrentGCBreakpoints::acquire_control(); 467 WB_END 468 469 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o)) 470 ConcurrentGCBreakpoints::release_control(); 471 WB_END 472 473 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o)) 474 ConcurrentGCBreakpoints::run_to_idle(); 475 WB_END 476 477 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at)) 478 Handle h_name(THREAD, JNIHandles::resolve(at)); 479 ResourceMark rm; 480 const char* c_name = java_lang_String::as_utf8_string(h_name()); 481 return ConcurrentGCBreakpoints::run_to(c_name); 482 WB_END 483 484 #if INCLUDE_G1GC 485 486 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 487 if (UseG1GC) { 488 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 489 oop result = JNIHandles::resolve(obj); 490 const G1HeapRegion* hr = g1h->heap_region_containing(result); 491 return hr->is_humongous(); 492 } 493 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 494 WB_END 495 496 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 497 if (UseG1GC) { 498 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 499 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr); 500 return hr->is_humongous(); 501 } 502 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 503 WB_END 504 505 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 506 if (UseG1GC) { 507 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 508 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr); 509 return hr->is_free(); 510 } 511 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 512 WB_END 513 514 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 515 if (UseG1GC) { 516 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 517 size_t nr = g1h->max_regions(); 518 return (jlong)nr; 519 } 520 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 521 WB_END 522 523 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 524 if (UseG1GC) { 525 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 526 size_t nr = g1h->num_free_regions(); 527 return (jlong)nr; 528 } 529 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 530 WB_END 531 532 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 533 if (UseG1GC) { 534 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 535 return g1h->concurrent_mark()->cm_thread()->in_progress(); 536 } 537 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 538 WB_END 539 540 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o)) 541 if (UseG1GC) { 542 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 543 G1ConcurrentMark* cm = g1h->concurrent_mark(); 544 return cm->completed_mark_cycles(); 545 } 546 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled"); 547 WB_END 548 549 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 550 if (UseG1GC) { 551 return (jint)G1HeapRegion::GrainBytes; 552 } 553 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 554 WB_END 555 556 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o)) 557 if (UseG1GC) { 558 return G1CollectedHeap::heap()->has_uncommittable_regions(); 559 } 560 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled"); 561 WB_END 562 563 #endif // INCLUDE_G1GC 564 565 #if INCLUDE_PARALLELGC 566 567 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 568 if (UseParallelGC) { 569 return GenAlignment; 570 } 571 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 572 WB_END 573 574 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 575 if (UseParallelGC) { 576 return GenAlignment; 577 } 578 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 579 WB_END 580 581 #endif // INCLUDE_PARALLELGC 582 583 #if INCLUDE_G1GC 584 585 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 586 if (UseG1GC) { 587 ResourceMark rm(THREAD); 588 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 589 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 590 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 591 return JNIHandles::make_local(THREAD, h()); 592 } 593 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 594 WB_END 595 596 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o)) 597 if (UseG1GC) { 598 G1NUMA* numa = G1NUMA::numa(); 599 return (jint)numa->num_active_nodes(); 600 } 601 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled"); 602 WB_END 603 604 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o)) 605 if (UseG1GC) { 606 G1NUMA* numa = G1NUMA::numa(); 607 int num_node_ids = checked_cast<int>(numa->num_active_nodes()); 608 const uint* node_ids = numa->node_ids(); 609 610 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL); 611 for (int i = 0; i < num_node_ids; i++) { 612 result->int_at_put(i, checked_cast<jint>(node_ids[i])); 613 } 614 return (jintArray) JNIHandles::make_local(THREAD, result); 615 } 616 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled"); 617 WB_END 618 619 class OldRegionsLivenessClosure: public G1HeapRegionClosure { 620 621 private: 622 const int _liveness; 623 size_t _total_count; 624 size_t _total_memory; 625 size_t _total_memory_to_free; 626 627 public: 628 OldRegionsLivenessClosure(int liveness) : 629 _liveness(liveness), 630 _total_count(0), 631 _total_memory(0), 632 _total_memory_to_free(0) { } 633 634 size_t total_count() { return _total_count; } 635 size_t total_memory() { return _total_memory; } 636 size_t total_memory_to_free() { return _total_memory_to_free; } 637 638 bool do_heap_region(G1HeapRegion* r) { 639 if (r->is_old()) { 640 size_t live = r->live_bytes(); 641 size_t size = r->used(); 642 size_t reg_size = G1HeapRegion::GrainBytes; 643 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 644 _total_memory += size; 645 ++_total_count; 646 if (size == reg_size) { 647 // We don't include non-full regions since they are unlikely included in mixed gc 648 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 649 _total_memory_to_free += size - live; 650 } 651 } 652 } 653 return false; 654 } 655 }; 656 657 658 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 659 if (!UseG1GC) { 660 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 661 } 662 if (liveness < 0) { 663 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 664 } 665 666 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 667 OldRegionsLivenessClosure rli(liveness); 668 g1h->heap_region_iterate(&rli); 669 670 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 671 result->long_at_put(0, rli.total_count()); 672 result->long_at_put(1, rli.total_memory()); 673 result->long_at_put(2, rli.total_memory_to_free()); 674 return (jlongArray) JNIHandles::make_local(THREAD, result); 675 WB_END 676 677 #endif // INCLUDE_G1GC 678 679 // Alloc memory using the test memory tag so that we can use that to see if 680 // NMT picks it up correctly 681 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 682 jlong addr = 0; 683 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 684 return addr; 685 WB_END 686 687 // Alloc memory with pseudo call stack. The test can create pseudo malloc 688 // allocation site to stress the malloc tracking. 689 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 690 address pc = (address)(size_t)pseudo_stack; 691 NativeCallStack stack(&pc, 1); 692 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 693 WB_END 694 695 // Alloc memory with pseudo call stack and specific memory tag. 696 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint mem_tag)) 697 address pc = (address)(size_t)pseudo_stack; 698 NativeCallStack stack(&pc, 1); 699 return (jlong)(uintptr_t)os::malloc(size, (MemTag)mem_tag, stack); 700 WB_END 701 702 // Free the memory allocated by NMTAllocTest 703 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 704 os::free((void*)(uintptr_t)mem); 705 WB_END 706 707 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 708 jlong addr = 0; 709 710 addr = (jlong)(uintptr_t)os::reserve_memory(size); 711 MemTracker::record_virtual_memory_tag((address)addr, mtTest); 712 713 return addr; 714 WB_END 715 716 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size)) 717 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size); 718 MemTracker::record_virtual_memory_tag((address)addr, mtTest); 719 720 return addr; 721 WB_END 722 723 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 724 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 725 MemTracker::record_virtual_memory_tag((address)(uintptr_t)addr, mtTest); 726 WB_END 727 728 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 729 os::uncommit_memory((char *)(uintptr_t)addr, size); 730 WB_END 731 732 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 733 os::release_memory((char *)(uintptr_t)addr, size); 734 WB_END 735 736 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 737 int hash_size = MallocSiteTable::hash_buckets(); 738 assert(hash_size > 0, "NMT hash_size should be > 0"); 739 return (jint)hash_size; 740 WB_END 741 742 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size)) 743 Arena* arena = new (mtTest) Arena(mtTest, Arena::Tag::tag_other, size_t(init_size)); 744 return (jlong)arena; 745 WB_END 746 747 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena)) 748 Arena* a = (Arena*)arena; 749 delete a; 750 WB_END 751 752 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size)) 753 Arena* a = (Arena*)arena; 754 a->Amalloc(size_t(size)); 755 WB_END 756 757 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 758 assert(method != nullptr, "method should not be null"); 759 ThreadToNativeFromVM ttn(thread); 760 return env->FromReflectedMethod(method); 761 } 762 763 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 764 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 765 private: 766 int _result; 767 const bool _make_not_entrant; 768 public: 769 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 770 _result(0), _make_not_entrant(make_not_entrant) { } 771 int result() const { return _result; } 772 773 void doit() { 774 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 775 if (t->has_last_Java_frame()) { 776 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) { 777 frame* f = fst.current(); 778 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 779 Deoptimization::deoptimize(t, *f); 780 if (_make_not_entrant) { 781 nmethod* nm = CodeCache::find_nmethod(f->pc()); 782 assert(nm != nullptr, "did not find nmethod"); 783 nm->make_not_entrant(); 784 } 785 ++_result; 786 } 787 } 788 } 789 } 790 } 791 }; 792 793 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 794 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 795 VMThread::execute(&op); 796 return op.result(); 797 WB_END 798 799 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth)) 800 bool result = false; 801 if (thread->has_last_Java_frame()) { 802 ResourceMark rm(THREAD); 803 RegisterMap reg_map(thread, 804 RegisterMap::UpdateMap::include, 805 RegisterMap::ProcessFrames::include, 806 RegisterMap::WalkContinuation::skip); 807 javaVFrame *jvf = thread->last_java_vframe(®_map); 808 for (jint d = 0; d < depth && jvf != nullptr; d++) { 809 jvf = jvf->java_sender(); 810 } 811 result = jvf != nullptr && jvf->fr().is_deoptimized_frame(); 812 } 813 return result; 814 WB_END 815 816 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 817 DeoptimizationScope deopt_scope; 818 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope); 819 deopt_scope.deoptimize_marked(); 820 WB_END 821 822 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 823 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 824 int result = 0; 825 CHECK_JNI_EXCEPTION_(env, result); 826 827 DeoptimizationScope deopt_scope; 828 { 829 MutexLocker mu(Compile_lock); 830 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 831 if (is_osr) { 832 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh()); 833 } else { 834 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag); 835 if (mh->code() != nullptr) { 836 deopt_scope.mark(mh->code()); 837 ++result; 838 } 839 } 840 CodeCache::mark_for_deoptimization(&deopt_scope, mh()); 841 } 842 843 deopt_scope.deoptimize_marked(); 844 845 return result; 846 WB_END 847 848 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 849 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 850 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 851 MutexLocker mu(Compile_lock); 852 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 853 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 854 if (code == nullptr) { 855 return JNI_FALSE; 856 } 857 return !code->is_marked_for_deoptimization(); 858 WB_END 859 860 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) { 861 if (comp == nullptr) { 862 return true; 863 } 864 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 865 bool exclude = directive->ExcludeOption; 866 DirectivesStack::release(directive); 867 return exclude; 868 } 869 870 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) { 871 if (is_osr) { 872 return CompilationPolicy::can_be_osr_compiled(mh, level); 873 } else { 874 return CompilationPolicy::can_be_compiled(mh, level); 875 } 876 } 877 878 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 879 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) { 880 return false; 881 } 882 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 883 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 884 MutexLocker mu(Compile_lock); 885 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 886 887 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by 888 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive 889 // to exclude a compilation of 'method'. 890 if (comp_level == CompLevel_any) { 891 // Both compilers could have ExcludeOption set. Check all combinations. 892 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh); 893 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh); 894 if (excluded_c1 && excluded_c2) { 895 // Compilation of 'method' excluded by both compilers. 896 return false; 897 } 898 899 if (excluded_c1) { 900 // C1 only has ExcludeOption set: Check if compilable with C2. 901 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization); 902 } else if (excluded_c2) { 903 // C2 only has ExcludeOption set: Check if compilable with C1. 904 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple); 905 } 906 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) { 907 // Compilation of 'method' excluded by compiler used for 'comp_level'. 908 return false; 909 } 910 911 return can_be_compiled_at_level(mh, is_osr, (int)comp_level); 912 WB_END 913 914 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 915 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 916 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 917 MutexLocker mu(Compile_lock); 918 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 919 return mh->queued_for_compilation(); 920 WB_END 921 922 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 923 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) { 924 return false; // Intrinsic is not available on a non-existent compilation level. 925 } 926 jmethodID method_id, compilation_context_id; 927 method_id = reflected_method_to_jmid(thread, env, method); 928 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 929 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 930 931 DirectiveSet* directive; 932 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 933 assert(comp != nullptr, "compiler not available"); 934 if (compilation_context != nullptr) { 935 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 936 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 937 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 938 directive = DirectivesStack::getMatchingDirective(cch, comp); 939 } else { 940 // Calling with null matches default directive 941 directive = DirectivesStack::getDefaultDirective(comp); 942 } 943 bool result = comp->is_intrinsic_available(mh, directive); 944 DirectivesStack::release(directive); 945 return result; 946 WB_END 947 948 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 949 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 950 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 951 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 952 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 953 return (code != nullptr ? code->comp_level() : CompLevel_none); 954 WB_END 955 956 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 957 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 958 CHECK_JNI_EXCEPTION(env); 959 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 960 if (is_osr) { 961 mh->set_not_osr_compilable("WhiteBox", comp_level); 962 } else { 963 mh->set_not_compilable("WhiteBox", comp_level); 964 } 965 WB_END 966 967 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method)) 968 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 969 CHECK_JNI_EXCEPTION_(env, 0); 970 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 971 uint cnt = 0; 972 MethodData* mdo = mh->method_data(); 973 if (mdo != nullptr) { 974 cnt = mdo->decompile_count(); 975 } 976 return cnt; 977 WB_END 978 979 // Get the trap count of a method for a specific reason. If the trap count for 980 // that reason did overflow, this includes the overflow trap count of the method. 981 // If 'reason' is null, the sum of the traps for all reasons will be returned. 982 // This number includes the overflow trap count if the trap count for any reason 983 // did overflow. 984 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj)) 985 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 986 CHECK_JNI_EXCEPTION_(env, 0); 987 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 988 uint cnt = 0; 989 MethodData* mdo = mh->method_data(); 990 if (mdo != nullptr) { 991 ResourceMark rm(THREAD); 992 char* reason_str = (reason_obj == nullptr) ? 993 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj)); 994 bool overflow = false; 995 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) { 996 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) { 997 cnt = mdo->trap_count(reason); 998 // Count in the overflow trap count on overflow 999 if (cnt == (uint)-1) { 1000 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count(); 1001 } 1002 break; 1003 } else if (reason_str == nullptr) { 1004 uint c = mdo->trap_count(reason); 1005 if (c == (uint)-1) { 1006 c = mdo->trap_count_limit(); 1007 if (!overflow) { 1008 // Count overflow trap count just once 1009 overflow = true; 1010 c += mdo->overflow_trap_count(); 1011 } 1012 } 1013 cnt += c; 1014 } 1015 } 1016 } 1017 return cnt; 1018 WB_END 1019 1020 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj)) 1021 if (reason_obj == nullptr && action_obj == nullptr) { 1022 return Deoptimization::total_deoptimization_count(); 1023 } 1024 ResourceMark rm(THREAD); 1025 const char *reason_str = (reason_obj == nullptr) ? 1026 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj)); 1027 const char *action_str = (action_obj == nullptr) ? 1028 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj)); 1029 1030 return Deoptimization::deoptimization_count(reason_str, action_str); 1031 WB_END 1032 1033 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 1034 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1035 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 1036 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1037 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 1038 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 1039 WB_END 1040 1041 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1042 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1043 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1044 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1045 bool result = mh->dont_inline(); 1046 mh->set_dont_inline(value == JNI_TRUE); 1047 return result; 1048 WB_END 1049 1050 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 1051 if (comp_level == CompLevel_any) { 1052 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 1053 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 1054 } else { 1055 return CompileBroker::queue_size(comp_level); 1056 } 1057 WB_END 1058 1059 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 1060 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1061 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1062 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1063 bool result = mh->force_inline(); 1064 mh->set_force_inline(value == JNI_TRUE); 1065 return result; 1066 WB_END 1067 1068 #ifdef LINUX 1069 bool WhiteBox::validate_cgroup(const char* proc_cgroups, 1070 const char* proc_self_cgroup, 1071 const char* proc_self_mountinfo, 1072 u1* cg_flags) { 1073 CgroupInfo cg_infos[CG_INFO_LENGTH]; 1074 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups, 1075 proc_self_cgroup, 1076 proc_self_mountinfo, cg_flags); 1077 } 1078 #endif 1079 1080 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) { 1081 // Screen for unavailable/bad comp level or null method 1082 AbstractCompiler* comp = CompileBroker::compiler(comp_level); 1083 if (method == nullptr) { 1084 tty->print_cr("WB error: request to compile null method"); 1085 return false; 1086 } 1087 if (comp_level > CompilationPolicy::highest_compile_level()) { 1088 tty->print_cr("WB error: invalid compilation level %d", comp_level); 1089 return false; 1090 } 1091 if (comp == nullptr) { 1092 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level); 1093 return false; 1094 } 1095 1096 // Check if compilation is blocking 1097 methodHandle mh(THREAD, method); 1098 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 1099 bool is_blocking = !directive->BackgroundCompilationOption; 1100 DirectivesStack::release(directive); 1101 1102 // Compile method and check result 1103 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false); 1104 MutexLocker mu(THREAD, Compile_lock); 1105 bool is_queued = mh->queued_for_compilation(); 1106 if ((!is_blocking && is_queued) || nm != nullptr) { 1107 return true; 1108 } 1109 // Check code again because compilation may be finished before Compile_lock is acquired. 1110 if (bci == InvocationEntryBci) { 1111 nmethod* code = mh->code(); 1112 if (code != nullptr) { 1113 return true; 1114 } 1115 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) { 1116 return true; 1117 } 1118 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level); 1119 mh->print_short_name(tty); 1120 tty->cr(); 1121 if (is_blocking && is_queued) { 1122 tty->print_cr("WB error: blocking compilation is still in queue!"); 1123 } 1124 return false; 1125 } 1126 1127 size_t WhiteBox::get_in_use_monitor_count() { 1128 return ObjectSynchronizer::_in_use_list.count(); 1129 } 1130 1131 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 1132 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1133 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1134 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 1135 WB_END 1136 1137 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 1138 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1139 Method* clinit = ik->class_initializer(); 1140 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) { 1141 return false; 1142 } 1143 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD); 1144 WB_END 1145 1146 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 1147 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1148 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1149 1150 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1151 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 1152 bool result = directive->PrintAssemblyOption; 1153 DirectivesStack::release(directive); 1154 1155 return result; 1156 WB_END 1157 1158 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1159 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1160 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1161 1162 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1163 1164 ResourceMark rm(THREAD); 1165 const char* error_msg = nullptr; 1166 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1167 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 1168 1169 if (m == nullptr) { 1170 assert(error_msg != nullptr, "Always have an error message"); 1171 tty->print_cr("Got error: %s", error_msg); 1172 return -1; // Pattern failed 1173 } 1174 1175 // Pattern works - now check if it matches 1176 int result; 1177 if (m->match(mh, InlineMatcher::force_inline)) { 1178 result = 2; // Force inline match 1179 } else if (m->match(mh, InlineMatcher::dont_inline)) { 1180 result = 1; // Dont inline match 1181 } else { 1182 result = 0; // No match 1183 } 1184 delete m; 1185 return result; 1186 WB_END 1187 1188 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1189 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1190 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1191 1192 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1193 1194 ResourceMark rm; 1195 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1196 1197 const char* error_msg = nullptr; 1198 1199 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false); 1200 if (m == nullptr) { 1201 assert(error_msg != nullptr, "Must have error_msg"); 1202 tty->print_cr("Got error: %s", error_msg); 1203 return -1; 1204 } 1205 1206 // Pattern works - now check if it matches 1207 int result = m->matches(mh); 1208 delete m; 1209 assert(result == 0 || result == 1, "Result out of range"); 1210 return result; 1211 WB_END 1212 1213 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method)) 1214 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1215 CHECK_JNI_EXCEPTION(env); 1216 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1217 1218 MethodData* mdo = mh->method_data(); 1219 if (mdo == nullptr) { 1220 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR); 1221 mdo = mh->method_data(); 1222 } 1223 mdo->init(); 1224 InvocationCounter* icnt = mdo->invocation_counter(); 1225 InvocationCounter* bcnt = mdo->backedge_counter(); 1226 // set i-counter according to CompilationPolicy::is_method_profiled 1227 icnt->set(Tier4MinInvocationThreshold); 1228 bcnt->set(Tier4CompileThreshold); 1229 WB_END 1230 1231 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 1232 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1233 CHECK_JNI_EXCEPTION(env); 1234 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1235 MutexLocker mu(THREAD, Compile_lock); 1236 MethodData* mdo = mh->method_data(); 1237 MethodCounters* mcs = mh->method_counters(); 1238 1239 if (mdo != nullptr) { 1240 mdo->init(); 1241 ResourceMark rm(THREAD); 1242 int arg_count = mdo->method()->size_of_parameters(); 1243 for (int i = 0; i < arg_count; i++) { 1244 mdo->set_arg_modified(i, 0); 1245 } 1246 mdo->clean_method_data(/*always_clean*/true); 1247 } 1248 1249 mh->clear_is_not_c1_compilable(); 1250 mh->clear_is_not_c2_compilable(); 1251 mh->clear_is_not_c2_osr_compilable(); 1252 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 1253 if (mcs != nullptr) { 1254 mcs->clear_counters(); 1255 } 1256 WB_END 1257 1258 template <typename T, int type_enum> 1259 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) { 1260 if (name == nullptr) { 1261 return false; 1262 } 1263 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1264 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1265 CHECK_JNI_EXCEPTION_(env, false); 1266 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name); 1267 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value); 1268 env->ReleaseStringUTFChars(name, flag_name); 1269 return (result == JVMFlag::SUCCESS); 1270 } 1271 1272 template <typename T, int type_enum> 1273 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) { 1274 if (name == nullptr) { 1275 return false; 1276 } 1277 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1278 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1279 CHECK_JNI_EXCEPTION_(env, false); 1280 JVMFlag* flag = JVMFlag::find_flag(flag_name); 1281 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL); 1282 env->ReleaseStringUTFChars(name, flag_name); 1283 return (result == JVMFlag::SUCCESS); 1284 } 1285 1286 template <typename T> 1287 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1288 ResourceMark rm(thread); 1289 jclass clazz = env->FindClass(name->as_C_string()); 1290 CHECK_JNI_EXCEPTION_(env, nullptr); 1291 jmethodID methodID = env->GetStaticMethodID(clazz, 1292 vmSymbols::valueOf_name()->as_C_string(), 1293 sig->as_C_string()); 1294 CHECK_JNI_EXCEPTION_(env, nullptr); 1295 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1296 CHECK_JNI_EXCEPTION_(env, nullptr); 1297 return result; 1298 } 1299 1300 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1301 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1302 } 1303 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1304 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1305 } 1306 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1307 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1308 } 1309 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1310 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1311 }*/ 1312 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1313 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1314 } 1315 1316 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1317 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1318 const char* flag_name = env->GetStringUTFChars(name, nullptr); 1319 CHECK_JNI_EXCEPTION_(env, nullptr); 1320 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name); 1321 env->ReleaseStringUTFChars(name, flag_name); 1322 return result; 1323 } 1324 1325 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1326 const JVMFlag* flag = getVMFlag(thread, env, name); 1327 return (flag != nullptr) && flag->is_constant_in_binary(); 1328 WB_END 1329 1330 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name)) 1331 const JVMFlag* flag = getVMFlag(thread, env, name); 1332 return (flag != nullptr) && flag->is_default(); 1333 WB_END 1334 1335 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1336 const JVMFlag* flag = getVMFlag(thread, env, name); 1337 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker()); 1338 WB_END 1339 1340 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1341 bool result; 1342 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) { 1343 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1344 return booleanBox(thread, env, result); 1345 } 1346 return nullptr; 1347 WB_END 1348 1349 template <typename T, int type_enum> 1350 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) { 1351 T result; 1352 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) { 1353 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1354 return longBox(thread, env, result); 1355 } 1356 return nullptr; 1357 } 1358 1359 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1360 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name); 1361 WB_END 1362 1363 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1364 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name); 1365 WB_END 1366 1367 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1368 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name); 1369 WB_END 1370 1371 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1372 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name); 1373 WB_END 1374 1375 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1376 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name); 1377 WB_END 1378 1379 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1380 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name); 1381 WB_END 1382 1383 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1384 double result; 1385 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) { 1386 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1387 return doubleBox(thread, env, result); 1388 } 1389 return nullptr; 1390 WB_END 1391 1392 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1393 ccstr ccstrResult; 1394 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) { 1395 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1396 jstring result = env->NewStringUTF(ccstrResult); 1397 CHECK_JNI_EXCEPTION_(env, nullptr); 1398 return result; 1399 } 1400 return nullptr; 1401 WB_END 1402 1403 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1404 bool result = value == JNI_TRUE ? true : false; 1405 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result); 1406 WB_END 1407 1408 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1409 int result = checked_cast<int>(value); 1410 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result); 1411 WB_END 1412 1413 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1414 uint result = checked_cast<uint>(value); 1415 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result); 1416 WB_END 1417 1418 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1419 intx result = value; 1420 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result); 1421 WB_END 1422 1423 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1424 uintx result = value; 1425 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result); 1426 WB_END 1427 1428 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1429 uint64_t result = value; 1430 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result); 1431 WB_END 1432 1433 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1434 size_t result = value; 1435 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result); 1436 WB_END 1437 1438 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1439 double result = value; 1440 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result); 1441 WB_END 1442 1443 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1444 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1445 const char* ccstrValue; 1446 if (value == nullptr) { 1447 ccstrValue = nullptr; 1448 } 1449 else { 1450 ccstrValue = env->GetStringUTFChars(value, nullptr); 1451 CHECK_JNI_EXCEPTION(env); 1452 } 1453 { 1454 ccstr param = ccstrValue; 1455 ThreadInVMfromNative ttvfn(thread); // back to VM 1456 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) { 1457 assert(param == nullptr, "old value is freed automatically and not returned"); 1458 } 1459 } 1460 if (value != nullptr) { 1461 env->ReleaseStringUTFChars(value, ccstrValue); 1462 } 1463 WB_END 1464 1465 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1466 WhiteBox::compilation_locked = true; 1467 WB_END 1468 1469 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1470 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1471 WhiteBox::compilation_locked = false; 1472 mo.notify_all(); 1473 WB_END 1474 1475 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1476 ResourceMark rm(THREAD); 1477 int len; 1478 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1479 return (StringTable::lookup(name, len) != nullptr); 1480 WB_END 1481 1482 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1483 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1484 Universe::heap()->collect(GCCause::_wb_full_gc); 1485 #if INCLUDE_G1GC || INCLUDE_SERIALGC 1486 if (UseG1GC || UseSerialGC) { 1487 // Needs to be cleared explicitly for G1 and Serial GC. 1488 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1489 } 1490 #endif // INCLUDE_G1GC || INCLUDE_SERIALGC 1491 WB_END 1492 1493 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1494 Universe::heap()->collect(GCCause::_wb_young_gc); 1495 WB_END 1496 1497 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1498 // static+volatile in order to force the read to happen 1499 // (not be eliminated by the compiler) 1500 static char c; 1501 static volatile char* p; 1502 1503 p = os::reserve_memory(os::vm_allocation_granularity()); 1504 if (p == nullptr) { 1505 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1506 } 1507 1508 c = *p; 1509 WB_END 1510 1511 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1512 const char* features = VM_Version::features_string(); 1513 ThreadToNativeFromVM ttn(thread); 1514 jstring features_string = env->NewStringUTF(features); 1515 1516 CHECK_JNI_EXCEPTION_(env, nullptr); 1517 1518 return features_string; 1519 WB_END 1520 1521 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) { 1522 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1523 return CodeCache::get_code_heap(code)->code_blob_type(); 1524 } 1525 1526 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) { 1527 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1528 return CodeCache::get_code_heap(blob_type); 1529 } 1530 1531 struct CodeBlobStub { 1532 CodeBlobStub(const CodeBlob* blob) : 1533 name(os::strdup(blob->name())), 1534 size(blob->size()), 1535 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))), 1536 address((jlong) blob) { } 1537 ~CodeBlobStub() { os::free((void*) name); } 1538 const char* const name; 1539 const jint size; 1540 const jint blob_type; 1541 const jlong address; 1542 }; 1543 1544 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1545 ResourceMark rm; 1546 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1547 CHECK_JNI_EXCEPTION_(env, nullptr); 1548 jobjectArray result = env->NewObjectArray(4, clazz, nullptr); 1549 1550 jstring name = env->NewStringUTF(cb->name); 1551 CHECK_JNI_EXCEPTION_(env, nullptr); 1552 env->SetObjectArrayElement(result, 0, name); 1553 1554 jobject obj = integerBox(thread, env, cb->size); 1555 CHECK_JNI_EXCEPTION_(env, nullptr); 1556 env->SetObjectArrayElement(result, 1, obj); 1557 1558 obj = integerBox(thread, env, cb->blob_type); 1559 CHECK_JNI_EXCEPTION_(env, nullptr); 1560 env->SetObjectArrayElement(result, 2, obj); 1561 1562 obj = longBox(thread, env, cb->address); 1563 CHECK_JNI_EXCEPTION_(env, nullptr); 1564 env->SetObjectArrayElement(result, 3, obj); 1565 1566 return result; 1567 } 1568 1569 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1570 ResourceMark rm(THREAD); 1571 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1572 CHECK_JNI_EXCEPTION_(env, nullptr); 1573 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1574 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1575 jobjectArray result = nullptr; 1576 if (code == nullptr) { 1577 return result; 1578 } 1579 int comp_level = code->comp_level(); 1580 int insts_size = code->insts_size(); 1581 1582 ThreadToNativeFromVM ttn(thread); 1583 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1584 CHECK_JNI_EXCEPTION_(env, nullptr); 1585 result = env->NewObjectArray(5, clazz, nullptr); 1586 if (result == nullptr) { 1587 return result; 1588 } 1589 1590 CodeBlobStub stub(code); 1591 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1592 CHECK_JNI_EXCEPTION_(env, nullptr); 1593 env->SetObjectArrayElement(result, 0, codeBlob); 1594 1595 jobject level = integerBox(thread, env, comp_level); 1596 CHECK_JNI_EXCEPTION_(env, nullptr); 1597 env->SetObjectArrayElement(result, 1, level); 1598 1599 jbyteArray insts = env->NewByteArray(insts_size); 1600 CHECK_JNI_EXCEPTION_(env, nullptr); 1601 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1602 env->SetObjectArrayElement(result, 2, insts); 1603 1604 jobject id = integerBox(thread, env, code->compile_id()); 1605 CHECK_JNI_EXCEPTION_(env, nullptr); 1606 env->SetObjectArrayElement(result, 3, id); 1607 1608 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1609 CHECK_JNI_EXCEPTION_(env, nullptr); 1610 env->SetObjectArrayElement(result, 4, entry_point); 1611 1612 return result; 1613 WB_END 1614 1615 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) { 1616 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1617 BufferBlob* blob; 1618 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1619 if (full_size < size) { 1620 full_size += align_up(size - full_size, oopSize); 1621 } 1622 { 1623 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1624 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1625 if (blob != nullptr) { 1626 ::new (blob) BufferBlob("WB::DummyBlob", CodeBlobKind::Buffer, full_size); 1627 } 1628 } 1629 // Track memory usage statistic after releasing CodeCache_lock 1630 MemoryService::track_code_cache_memory_usage(); 1631 return blob; 1632 } 1633 1634 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1635 if (size < 0) { 1636 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1637 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1638 } 1639 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type)); 1640 WB_END 1641 1642 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1643 if (addr == 0) { 1644 return; 1645 } 1646 BufferBlob::free((BufferBlob*) addr); 1647 WB_END 1648 1649 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1650 ResourceMark rm; 1651 GrowableArray<CodeBlobStub*> blobs; 1652 { 1653 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1654 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type)); 1655 if (heap == nullptr) { 1656 return nullptr; 1657 } 1658 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1659 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) { 1660 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1661 new (stub) CodeBlobStub(cb); 1662 blobs.append(stub); 1663 } 1664 } 1665 ThreadToNativeFromVM ttn(thread); 1666 jobjectArray result = nullptr; 1667 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1668 CHECK_JNI_EXCEPTION_(env, nullptr); 1669 result = env->NewObjectArray(blobs.length(), clazz, nullptr); 1670 CHECK_JNI_EXCEPTION_(env, nullptr); 1671 if (result == nullptr) { 1672 return result; 1673 } 1674 int i = 0; 1675 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1676 it != blobs.end(); ++it) { 1677 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1678 CHECK_JNI_EXCEPTION_(env, nullptr); 1679 env->SetObjectArrayElement(result, i, obj); 1680 CHECK_JNI_EXCEPTION_(env, nullptr); 1681 ++i; 1682 } 1683 return result; 1684 WB_END 1685 1686 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1687 return CompileBroker::get_compilation_activity_mode(); 1688 WB_END 1689 1690 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1691 if (addr == 0) { 1692 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1693 "WB_GetCodeBlob: addr is null"); 1694 } 1695 ThreadToNativeFromVM ttn(thread); 1696 CodeBlobStub stub((CodeBlob*) addr); 1697 return codeBlob2objectArray(thread, env, &stub); 1698 WB_END 1699 1700 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1701 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1702 CHECK_JNI_EXCEPTION_(env, 0); 1703 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1704 return (jlong) mh->method_data(); 1705 WB_END 1706 1707 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1708 return (jlong) thread->stack_size(); 1709 WB_END 1710 1711 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1712 return (jlong) thread->stack_overflow_state()->stack_available( 1713 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size(); 1714 WB_END 1715 1716 1717 int WhiteBox::array_bytes_to_length(size_t bytes) { 1718 return Array<u1>::bytes_to_length(bytes); 1719 } 1720 1721 /////////////// 1722 // MetaspaceTestContext and MetaspaceTestArena 1723 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit)) 1724 metaspace::MetaspaceTestContext* context = 1725 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit); 1726 return (jlong)p2i(context); 1727 WB_END 1728 1729 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1730 delete (metaspace::MetaspaceTestContext*) context; 1731 WB_END 1732 1733 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1734 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1735 context0->purge_area(); 1736 WB_END 1737 1738 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1739 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1740 context0->print_on(tty); 1741 WB_END 1742 1743 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1744 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1745 return context0->committed_words(); 1746 WB_END 1747 1748 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context)) 1749 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1750 return context0->used_words(); 1751 WB_END 1752 1753 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro)) 1754 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType; 1755 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context; 1756 return (jlong)p2i(context0->create_arena(type)); 1757 WB_END 1758 1759 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena)) 1760 delete (metaspace::MetaspaceTestArena*) arena; 1761 WB_END 1762 1763 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size)) 1764 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena; 1765 MetaWord* p = arena0->allocate((size_t) word_size); 1766 return (jlong)p2i(p); 1767 WB_END 1768 1769 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size)) 1770 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena; 1771 arena0->deallocate((MetaWord*)p, (size_t) word_size); 1772 WB_END 1773 1774 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb)) 1775 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord; 1776 WB_END 1777 1778 ////////////// 1779 1780 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1781 if (size < 0) { 1782 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1783 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1784 } 1785 1786 oop class_loader_oop = JNIHandles::resolve(class_loader); 1787 ClassLoaderData* cld = class_loader_oop != nullptr 1788 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1789 : ClassLoaderData::the_null_class_loader_data(); 1790 1791 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1792 1793 return (jlong)(uintptr_t)metadata; 1794 WB_END 1795 1796 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1797 jstring version, jstring location, jobjectArray packages)) 1798 Handle h_module (THREAD, JNIHandles::resolve(module)); 1799 Modules::define_module(h_module, is_open, version, location, packages, CHECK); 1800 WB_END 1801 1802 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1803 Handle h_from_module (THREAD, JNIHandles::resolve(from_module)); 1804 Handle h_to_module (THREAD, JNIHandles::resolve(to_module)); 1805 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK); 1806 WB_END 1807 1808 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1809 Handle h_module (THREAD, JNIHandles::resolve(module)); 1810 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK); 1811 WB_END 1812 1813 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1814 Handle h_module (THREAD, JNIHandles::resolve(module)); 1815 Modules::add_module_exports(h_module, package, Handle(), CHECK); 1816 WB_END 1817 1818 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1819 Handle h_from_module (THREAD, JNIHandles::resolve(from_module)); 1820 Handle h_source_module (THREAD, JNIHandles::resolve(source_module)); 1821 Modules::add_reads_module(h_from_module, h_source_module, CHECK); 1822 WB_END 1823 1824 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1825 if (inc < 0) { 1826 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1827 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1828 } 1829 1830 jlong max_size_t = (jlong) ((size_t) -1); 1831 if (inc > max_size_t) { 1832 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1833 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1834 } 1835 1836 size_t new_cap_until_GC = 0; 1837 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1838 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1839 if (!success) { 1840 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1841 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1842 "due to contention with another thread"); 1843 } 1844 return (jlong) new_cap_until_GC; 1845 WB_END 1846 1847 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1848 return (jlong) MetaspaceGC::capacity_until_GC(); 1849 WB_END 1850 1851 // The function is only valid when CDS is available. 1852 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb)) 1853 #if INCLUDE_CDS 1854 return (jlong)MetaspaceShared::core_region_alignment(); 1855 #else 1856 ShouldNotReachHere(); 1857 return 0L; 1858 #endif 1859 WB_END 1860 1861 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1862 oop obj_oop = JNIHandles::resolve(obj); 1863 return (jboolean) obj_oop->mark().has_monitor(); 1864 WB_END 1865 1866 WB_ENTRY(jlong, WB_getInUseMonitorCount(JNIEnv* env, jobject wb)) 1867 return (jlong) WhiteBox::get_in_use_monitor_count(); 1868 WB_END 1869 1870 WB_ENTRY(jint, WB_getLockStackCapacity(JNIEnv* env)) 1871 return (jint) LockStack::CAPACITY; 1872 WB_END 1873 1874 WB_ENTRY(jboolean, WB_supportsRecursiveLightweightLocking(JNIEnv* env)) 1875 return (jboolean) VM_Version::supports_recursive_lightweight_locking(); 1876 WB_END 1877 1878 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb)) 1879 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors"); 1880 return ObjectSynchronizer::request_deflate_idle_monitors_from_wb(); 1881 WB_END 1882 1883 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1884 VM_ForceSafepoint force_safepoint_op; 1885 VMThread::execute(&force_safepoint_op); 1886 WB_END 1887 1888 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb)) 1889 nullStream dev_null; 1890 ClassLoaderStatsVMOperation force_op(&dev_null); 1891 VMThread::execute(&force_op); 1892 WB_END 1893 1894 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1895 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1896 return (jlong) ik->constants(); 1897 WB_END 1898 1899 WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass)) 1900 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1901 objArrayOop resolved_refs= ik->constants()->resolved_references(); 1902 return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs); 1903 WB_END 1904 1905 WB_ENTRY(jint, WB_getFieldEntriesLength(JNIEnv* env, jobject wb, jclass klass)) 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_entries_length(); 1912 WB_END 1913 1914 WB_ENTRY(jint, WB_getFieldCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index)) 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_field_entry_at(index)->constant_pool_index(); 1921 WB_END 1922 1923 WB_ENTRY(jint, WB_getMethodEntriesLength(JNIEnv* env, jobject wb, jclass klass)) 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_entries_length(); 1930 WB_END 1931 1932 WB_ENTRY(jint, WB_getMethodCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index)) 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_method_entry_at(index)->constant_pool_index(); 1939 WB_END 1940 1941 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass)) 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_entries_length(); 1948 WB_END 1949 1950 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index)) 1951 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1952 ConstantPool* cp = ik->constants(); 1953 if (cp->cache() == nullptr) { 1954 return -1; 1955 } 1956 return cp->resolved_indy_entry_at(index)->constant_pool_index(); 1957 WB_END 1958 1959 WB_ENTRY(jobject, WB_printClasses(JNIEnv* env, jobject wb, jstring class_name_pattern, jint flags)) 1960 ThreadToNativeFromVM ttnfv(thread); 1961 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr); 1962 ResourceMark rm; 1963 stringStream st; 1964 { 1965 ThreadInVMfromNative ttvfn(thread); // back to VM 1966 ClassPrinter::print_classes(c, flags, &st); 1967 } 1968 jstring result = env->NewStringUTF(st.freeze()); 1969 CHECK_JNI_EXCEPTION_(env, nullptr); 1970 return result; 1971 WB_END 1972 1973 WB_ENTRY(jobject, WB_printMethods(JNIEnv* env, jobject wb, jstring class_name_pattern, jstring method_pattern, jint flags)) 1974 ThreadToNativeFromVM ttnfv(thread); 1975 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr); 1976 const char* m = env->GetStringUTFChars(method_pattern, nullptr); 1977 ResourceMark rm; 1978 stringStream st; 1979 { 1980 ThreadInVMfromNative ttvfn(thread); // back to VM 1981 ClassPrinter::print_methods(c, m, flags, &st); 1982 } 1983 jstring result = env->NewStringUTF(st.freeze()); 1984 CHECK_JNI_EXCEPTION_(env, nullptr); 1985 return result; 1986 WB_END 1987 1988 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1989 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1990 VMThread::execute(&clear_ics); 1991 WB_END 1992 1993 template <typename T> 1994 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1995 assert(value != nullptr, "sanity"); 1996 if (method == nullptr || name == nullptr) { 1997 return false; 1998 } 1999 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 2000 CHECK_JNI_EXCEPTION_(env, false); 2001 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 2002 // can't be in VM when we call JNI 2003 ThreadToNativeFromVM ttnfv(thread); 2004 const char* flag_name = env->GetStringUTFChars(name, nullptr); 2005 CHECK_JNI_EXCEPTION_(env, false); 2006 CompileCommandEnum option = CompilerOracle::string_to_option(flag_name); 2007 env->ReleaseStringUTFChars(name, flag_name); 2008 if (option == CompileCommandEnum::Unknown) { 2009 return false; 2010 } 2011 if (!CompilerOracle::option_matches_type(option, *value)) { 2012 return false; 2013 } 2014 return CompilerOracle::has_option_value(mh, option, *value); 2015 } 2016 2017 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2018 bool result; 2019 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 2020 // can't be in VM when we call JNI 2021 ThreadToNativeFromVM ttnfv(thread); 2022 return booleanBox(thread, env, result); 2023 } 2024 return nullptr; 2025 WB_END 2026 2027 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2028 intx result; 2029 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 2030 // can't be in VM when we call JNI 2031 ThreadToNativeFromVM ttnfv(thread); 2032 return longBox(thread, env, result); 2033 } 2034 return nullptr; 2035 WB_END 2036 2037 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2038 uintx result; 2039 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 2040 // can't be in VM when we call JNI 2041 ThreadToNativeFromVM ttnfv(thread); 2042 return longBox(thread, env, result); 2043 } 2044 return nullptr; 2045 WB_END 2046 2047 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2048 double result; 2049 if (GetMethodOption <double> (thread, env, method, name, &result)) { 2050 // can't be in VM when we call JNI 2051 ThreadToNativeFromVM ttnfv(thread); 2052 return doubleBox(thread, env, result); 2053 } 2054 return nullptr; 2055 WB_END 2056 2057 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 2058 ccstr ccstrResult; 2059 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 2060 // can't be in VM when we call JNI 2061 ThreadToNativeFromVM ttnfv(thread); 2062 jstring result = env->NewStringUTF(ccstrResult); 2063 CHECK_JNI_EXCEPTION_(env, nullptr); 2064 return result; 2065 } 2066 return nullptr; 2067 WB_END 2068 2069 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb)) 2070 const char* p = CDSConfig::default_archive_path(); 2071 ThreadToNativeFromVM ttn(thread); 2072 jstring path_string = env->NewStringUTF(p); 2073 2074 CHECK_JNI_EXCEPTION_(env, nullptr); 2075 2076 return path_string; 2077 WB_END 2078 2079 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb)) 2080 return CDSConfig::is_using_archive(); 2081 WB_END 2082 2083 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb)) 2084 #if INCLUDE_CDS 2085 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION; 2086 #else 2087 ShouldNotReachHere(); 2088 return (jint)-1; 2089 #endif 2090 WB_END 2091 2092 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb)) 2093 #if INCLUDE_CDS 2094 return (jint)CURRENT_CDS_ARCHIVE_VERSION; 2095 #else 2096 ShouldNotReachHere(); 2097 return (jint)-1; 2098 #endif 2099 WB_END 2100 2101 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb)) 2102 return FileMapInfo::memory_mapping_failed(); 2103 WB_END 2104 2105 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str)) 2106 ResourceMark rm(THREAD); 2107 oop str_oop = JNIHandles::resolve(str); 2108 int length; 2109 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false)); 2110 return StringTable::lookup_shared(chars, length) == str_oop; 2111 WB_END 2112 2113 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 2114 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 2115 WB_END 2116 2117 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env)) 2118 return ArchiveHeapLoader::is_mapped(); 2119 WB_END 2120 2121 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz)) 2122 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 2123 if (!k->is_instance_klass()) { 2124 return; 2125 } 2126 InstanceKlass *ik = InstanceKlass::cast(k); 2127 ik->link_class(THREAD); // may throw verification error 2128 WB_END 2129 2130 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 2131 return ArchiveHeapLoader::is_mapped(); 2132 WB_END 2133 2134 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env)) 2135 #if INCLUDE_CDS 2136 // An exploded build inhibits use of CDS. Therefore, for the 2137 // purpose of testing, the JVM can be treated as not having CDS 2138 // built in at all. 2139 return ClassLoader::has_jrt_entry(); 2140 #else 2141 return false; 2142 #endif // INCLUDE_CDS 2143 WB_END 2144 2145 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env)) 2146 #if COMPILER2_OR_JVMCI 2147 return true; 2148 #else 2149 return false; 2150 #endif 2151 WB_END 2152 2153 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env)) 2154 #if INCLUDE_JVMCI 2155 return JVMCIGlobals::gc_supports_jvmci(); 2156 #else 2157 return false; 2158 #endif 2159 WB_END 2160 2161 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env)) 2162 return HeapShared::can_write(); 2163 WB_END 2164 2165 2166 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env)) 2167 #if INCLUDE_JFR 2168 return true; 2169 #else 2170 return false; 2171 #endif // INCLUDE_JFR 2172 WB_END 2173 2174 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env)) 2175 #if defined(DTRACE_ENABLED) 2176 return true; 2177 #else 2178 return false; 2179 #endif // DTRACE_ENABLED 2180 WB_END 2181 2182 #if INCLUDE_CDS 2183 2184 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name)) 2185 ResourceMark rm; 2186 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 2187 jint result = (jint)CDSConstants::get_cds_offset(c_name); 2188 return result; 2189 WB_END 2190 2191 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name)) 2192 ResourceMark rm; 2193 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 2194 jint result = (jint)CDSConstants::get_cds_constant(c_name); 2195 return result; 2196 WB_END 2197 2198 #endif // INCLUDE_CDS 2199 2200 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle)) 2201 class ReadMonitorsClosure : public HandshakeClosure { 2202 jboolean _executed; 2203 2204 void do_thread(Thread* th) { 2205 JavaThread* jt = JavaThread::cast(th); 2206 ResourceMark rm; 2207 2208 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>(); 2209 2210 if (!jt->has_last_Java_frame()) { 2211 return; 2212 } 2213 RegisterMap rmap(jt, 2214 RegisterMap::UpdateMap::include, 2215 RegisterMap::ProcessFrames::include, 2216 RegisterMap::WalkContinuation::skip); 2217 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) { 2218 GrowableArray<MonitorInfo*> *monitors = vf->monitors(); 2219 if (monitors != nullptr) { 2220 int len = monitors->length(); 2221 // Walk monitors youngest to oldest 2222 for (int i = len - 1; i >= 0; i--) { 2223 MonitorInfo* mon_info = monitors->at(i); 2224 if (mon_info->eliminated()) continue; 2225 oop owner = mon_info->owner(); 2226 if (owner != nullptr) { 2227 info->append(mon_info); 2228 } 2229 } 2230 } 2231 } 2232 _executed = true; 2233 } 2234 2235 public: 2236 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {} 2237 jboolean executed() const { return _executed; } 2238 }; 2239 2240 ReadMonitorsClosure rmc; 2241 if (thread_handle != nullptr) { 2242 ThreadsListHandle tlh; 2243 JavaThread* target = nullptr; 2244 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2245 if (is_alive) { 2246 Handshake::execute(&rmc, &tlh, target); 2247 } 2248 } 2249 return rmc.executed(); 2250 WB_END 2251 2252 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 2253 class TraceSelfClosure : public HandshakeClosure { 2254 jint _num_threads_completed; 2255 2256 void do_thread(Thread* th) { 2257 JavaThread* jt = JavaThread::cast(th); 2258 ResourceMark rm; 2259 2260 jt->print_on(tty); 2261 jt->print_stack_on(tty); 2262 tty->cr(); 2263 Atomic::inc(&_num_threads_completed); 2264 } 2265 2266 public: 2267 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {} 2268 2269 jint num_threads_completed() const { return _num_threads_completed; } 2270 }; 2271 TraceSelfClosure tsc(Thread::current()); 2272 2273 if (all_threads) { 2274 Handshake::execute(&tsc); 2275 } else if (thread_handle != nullptr) { 2276 ThreadsListHandle tlh; 2277 JavaThread* target = nullptr; 2278 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2279 if (is_alive) { 2280 Handshake::execute(&tsc, &tlh, target); 2281 } 2282 } 2283 return tsc.num_threads_completed(); 2284 WB_END 2285 2286 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle)) 2287 class TraceSelfClosure : public AsyncHandshakeClosure { 2288 JavaThread* _self; 2289 void do_thread(Thread* th) { 2290 assert(th->is_Java_thread(), "sanity"); 2291 // AsynchHandshake handshakes are only executed by target. 2292 assert(_self == th, "Must be"); 2293 assert(Thread::current() == th, "Must be"); 2294 JavaThread* jt = JavaThread::cast(th); 2295 ResourceMark rm; 2296 jt->print_on(tty); 2297 jt->print_stack_on(tty); 2298 tty->cr(); 2299 } 2300 2301 public: 2302 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {} 2303 }; 2304 if (thread_handle != nullptr) { 2305 ThreadsListHandle tlh; 2306 JavaThread* target = nullptr; 2307 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr); 2308 if (is_alive) { 2309 TraceSelfClosure* tsc = new TraceSelfClosure(target); 2310 Handshake::execute(tsc, target); 2311 } 2312 } 2313 WB_END 2314 2315 static volatile int _emulated_lock = 0; 2316 2317 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender)) 2318 JavaThread* self = JavaThread::current(); 2319 2320 { 2321 // Before trying to acquire the lock transition into a safepoint safe state. 2322 // Otherwise if either suspender or suspendee blocks for a safepoint 2323 // in ~ThreadBlockInVM the other one could loop forever trying to acquire 2324 // the lock without allowing the safepoint to progress. 2325 ThreadBlockInVM tbivm(self); 2326 2327 // We will deadlock here if we are 'suspender' and 'suspendee' 2328 // suspended in ~ThreadBlockInVM. This verifies we only suspend 2329 // at the right place. 2330 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {} 2331 assert(_emulated_lock == 1, "Must be locked"); 2332 2333 // Sleep much longer in suspendee to force situation where 2334 // 'suspender' is waiting above to acquire lock. 2335 os::naked_short_sleep(suspender ? 1 : 10); 2336 } 2337 Atomic::store(&_emulated_lock, 0); 2338 WB_END 2339 2340 // Some convenience methods to deal with objects from java 2341 int WhiteBox::offset_for_field(const char* field_name, oop object, 2342 Symbol* signature_symbol) { 2343 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid"); 2344 2345 //Get the class of our object 2346 Klass* arg_klass = object->klass(); 2347 //Turn it into an instance-klass 2348 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 2349 2350 //Create symbols to look for in the class 2351 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name); 2352 2353 //To be filled in with an offset of the field we're looking for 2354 fieldDescriptor fd; 2355 2356 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 2357 if (res == nullptr) { 2358 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 2359 name_symbol->as_C_string()); 2360 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 2361 } 2362 2363 //fetch the field at the offset we've found 2364 int dest_offset = fd.offset(); 2365 2366 return dest_offset; 2367 } 2368 2369 2370 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 2371 int offset = offset_for_field(field_name, object, 2372 vmSymbols::string_signature()); 2373 oop string = object->obj_field(offset); 2374 if (string == nullptr) { 2375 return nullptr; 2376 } 2377 const char* ret = java_lang_String::as_utf8_string(string); 2378 return ret; 2379 } 2380 2381 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 2382 int offset = 2383 offset_for_field(field_name, object, vmSymbols::bool_signature()); 2384 bool ret = (object->bool_field(offset) == JNI_TRUE); 2385 return ret; 2386 } 2387 2388 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 2389 ResourceMark rm; 2390 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass)); 2391 const char* klass_name = klass->external_name(); 2392 2393 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 2394 2395 // one by one registration natives for exception catching 2396 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 2397 CHECK_JNI_EXCEPTION(env); 2398 for (int i = 0, n = method_count; i < n; ++i) { 2399 // Skip dummy entries 2400 if (method_array[i].fnPtr == nullptr) continue; 2401 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 2402 jthrowable throwable_obj = env->ExceptionOccurred(); 2403 if (throwable_obj != nullptr) { 2404 env->ExceptionClear(); 2405 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 2406 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 2407 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 2408 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s", 2409 klass_name, method_array[i].name, method_array[i].signature); 2410 } 2411 } else { 2412 // Registration failed unexpectedly. 2413 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered", 2414 klass_name, method_array[i].name, method_array[i].signature); 2415 env->UnregisterNatives(wbclass); 2416 break; 2417 } 2418 } 2419 } 2420 } 2421 2422 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 2423 // can't be in VM when we call JNI 2424 ThreadToNativeFromVM ttnfv(thread); 2425 const char* dir = env->GetStringUTFChars(compDirect, nullptr); 2426 CHECK_JNI_EXCEPTION_(env, 0); 2427 int ret; 2428 { 2429 ThreadInVMfromNative ttvfn(thread); // back to VM 2430 ret = DirectivesParser::parse_string(dir, tty); 2431 } 2432 env->ReleaseStringUTFChars(compDirect, dir); 2433 // -1 for error parsing directive. Return 0 as number of directives added. 2434 if (ret == -1) { 2435 ret = 0; 2436 } 2437 return (jint) ret; 2438 WB_END 2439 2440 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 2441 DirectivesStack::pop(count); 2442 WB_END 2443 2444 // Checks that the library libfile has the noexecstack bit set. 2445 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 2446 jboolean ret = false; 2447 #ifdef LINUX 2448 // Can't be in VM when we call JNI. 2449 ThreadToNativeFromVM ttnfv(thread); 2450 const char* lf = env->GetStringUTFChars(libfile, nullptr); 2451 CHECK_JNI_EXCEPTION_(env, 0); 2452 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 2453 env->ReleaseStringUTFChars(libfile, lf); 2454 #endif 2455 return ret; 2456 WB_END 2457 2458 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 2459 LINUX_ONLY(return OSContainer::is_containerized();) 2460 return false; 2461 WB_END 2462 2463 // Physical memory of the host machine (including containers) 2464 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o)) 2465 LINUX_ONLY(return os::Linux::physical_memory();) 2466 return os::physical_memory(); 2467 WB_END 2468 2469 // Physical swap of the host machine (including containers), Linux only. 2470 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o)) 2471 LINUX_ONLY(return (jlong)os::Linux::host_swap();) 2472 return -1; // Not used/implemented on other platforms 2473 WB_END 2474 2475 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env, 2476 jobject o, 2477 jstring proc_cgroups, 2478 jstring proc_self_cgroup, 2479 jstring proc_self_mountinfo)) 2480 jint ret = 0; 2481 #ifdef LINUX 2482 ThreadToNativeFromVM ttnfv(thread); 2483 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, nullptr); 2484 CHECK_JNI_EXCEPTION_(env, 0); 2485 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr); 2486 CHECK_JNI_EXCEPTION_(env, 0); 2487 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr); 2488 CHECK_JNI_EXCEPTION_(env, 0); 2489 u1 cg_type_flags = 0; 2490 // This sets cg_type_flags 2491 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags); 2492 ret = (jint)cg_type_flags; 2493 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups); 2494 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup); 2495 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo); 2496 #endif 2497 return ret; 2498 WB_END 2499 2500 // Available cpus of the host machine, Linux only. 2501 // Used in container testing. 2502 WB_ENTRY(jint, WB_HostCPUs(JNIEnv* env, jobject o)) 2503 LINUX_ONLY(return os::Linux::active_processor_count();) 2504 return -1; // Not used/implemented on other platforms 2505 WB_END 2506 2507 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 2508 os::print_os_info(tty); 2509 WB_END 2510 2511 // Elf decoder 2512 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 2513 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 2514 ElfFile::_do_not_cache_elf_section = true; 2515 #endif 2516 WB_END 2517 2518 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o)) 2519 return (jlong) ResolvedMethodTable::items_count(); 2520 WB_END 2521 2522 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o)) 2523 return (jint) ProtectionDomainCacheTable::removed_entries_count(); 2524 WB_END 2525 2526 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror)) 2527 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror)); 2528 // Return size in bytes. 2529 return k->size() * wordSize; 2530 WB_END 2531 2532 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java. 2533 // It explains how the thread's priority field is used for test state coordination. 2534 // 2535 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle)) 2536 oop target_oop = JNIHandles::resolve_non_null(target_handle); 2537 jlong tid = java_lang_Thread::thread_id(target_oop); 2538 JavaThread* target = java_lang_Thread::thread(target_oop); 2539 2540 // Grab a ThreadsListHandle to protect the target thread whilst terminating 2541 ThreadsListHandle tlh; 2542 2543 // Look up the target thread by tid to ensure it is present 2544 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid); 2545 if (t == nullptr) { 2546 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!"); 2547 } 2548 2549 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected"); 2550 // Allow target to terminate by boosting priority 2551 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1)); 2552 2553 // Now wait for the target to terminate 2554 while (!target->is_terminated()) { 2555 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint 2556 os::naked_short_sleep(0); 2557 } 2558 2559 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated"); 2560 2561 // Now release the GC inducing thread - we have to re-resolve the external oop that 2562 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now. 2563 oop original = JNIHandles::resolve_non_null(target_handle); 2564 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2)); 2565 2566 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:"); 2567 2568 // The Java code should be creating garbage and triggering GC, which would potentially move 2569 // the threadObj oop. If the exiting thread is properly protected then its threadObj should 2570 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to 2571 // kick in. 2572 for (int i = 0; i < 5; i++) { 2573 oop original = JNIHandles::resolve_non_null(target_handle); 2574 oop current = t->threadObj(); 2575 if (original != current) { 2576 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i); 2577 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!"); 2578 } else { 2579 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i); 2580 ThreadBlockInVM tbivm(thread); 2581 os::naked_short_sleep(50); 2582 } 2583 } 2584 WB_END 2585 2586 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map)) 2587 ResourceMark rm; // for verify 2588 stringStream st; 2589 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) { 2590 frame* current_frame = fst.current(); 2591 if (log) { 2592 current_frame->print_value_on(&st); 2593 } 2594 current_frame->verify(fst.register_map()); 2595 } 2596 if (log) { 2597 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames"); 2598 tty->print_raw(st.freeze()); 2599 tty->print_cr("[WhiteBox::VerifyFrames] Done"); 2600 } 2601 WB_END 2602 2603 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb)) 2604 #if INCLUDE_JVMTI 2605 return JNI_TRUE; 2606 #else 2607 return JNI_FALSE; 2608 #endif 2609 WB_END 2610 2611 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time)) 2612 os::naked_short_sleep(time); 2613 WB_END 2614 2615 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o)) 2616 ThreadToNativeFromVM ttn(thread); 2617 jstring info_string = env->NewStringUTF(XSTR(LIBC)); 2618 CHECK_JNI_EXCEPTION_(env, nullptr); 2619 return info_string; 2620 WB_END 2621 2622 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb)) 2623 GCLocker::lock_critical(thread); 2624 WB_END 2625 2626 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb)) 2627 GCLocker::unlock_critical(thread); 2628 WB_END 2629 2630 WB_ENTRY(void, WB_PinObject(JNIEnv* env, jobject wb, jobject o)) 2631 #if INCLUDE_G1GC 2632 if (!UseG1GC) { 2633 ShouldNotReachHere(); 2634 return; 2635 } 2636 oop obj = JNIHandles::resolve(o); 2637 G1CollectedHeap::heap()->pin_object(thread, obj); 2638 #else 2639 ShouldNotReachHere(); 2640 #endif // INCLUDE_G1GC 2641 WB_END 2642 2643 WB_ENTRY(void, WB_UnpinObject(JNIEnv* env, jobject wb, jobject o)) 2644 #if INCLUDE_G1GC 2645 if (!UseG1GC) { 2646 ShouldNotReachHere(); 2647 return; 2648 } 2649 oop obj = JNIHandles::resolve(o); 2650 G1CollectedHeap::heap()->unpin_object(thread, obj); 2651 #else 2652 ShouldNotReachHere(); 2653 #endif // INCLUDE_G1GC 2654 WB_END 2655 2656 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable)) 2657 if (!Continuations::enabled()) { 2658 tty->print_cr("WB error: must be Continuations::enabled()!"); 2659 return JNI_FALSE; 2660 } 2661 jboolean result = false; 2662 #if INCLUDE_JVMTI 2663 if (enable) { 2664 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti(); 2665 } else { 2666 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti(); 2667 } 2668 #endif 2669 return result; 2670 WB_END 2671 2672 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size)) 2673 void* const from = (void*)addr; 2674 void* const to = (void*)(addr + size); 2675 if (from > to) { 2676 os::pretouch_memory(from, to, os::vm_page_size()); 2677 } 2678 WB_END 2679 2680 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target)) 2681 ClassLoaderDataGraph::safepoint_and_clean_metaspaces(); 2682 WB_END 2683 2684 // Reports resident set size (RSS) in bytes 2685 WB_ENTRY(jlong, WB_Rss(JNIEnv* env, jobject o)) 2686 return os::rss(); 2687 WB_END 2688 2689 #define CC (char*) 2690 2691 static JNINativeMethod methods[] = { 2692 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 2693 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 2694 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 2695 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 2696 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 2697 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 2698 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 2699 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 2700 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 2701 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses }, 2702 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount }, 2703 {CC"parseCommandLine0", 2704 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;", 2705 (void*) &WB_ParseCommandLine 2706 }, 2707 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2708 (void*)&WB_AddToBootstrapClassLoaderSearch}, 2709 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2710 (void*)&WB_AddToSystemClassLoaderSearch}, 2711 {CC"getCompressedOopsMaxHeapSize", CC"()J", 2712 (void*)&WB_GetCompressedOopsMaxHeapSize}, 2713 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 2714 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 2715 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 2716 #if INCLUDE_CDS 2717 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName}, 2718 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName}, 2719 #endif 2720 #if INCLUDE_G1GC 2721 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 2722 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles}, 2723 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 2724 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 2725 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 2726 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 2727 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 2728 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 2729 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit}, 2730 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 2731 (void*)&WB_G1AuxiliaryMemoryUsage }, 2732 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount }, 2733 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds }, 2734 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 2735 #endif // INCLUDE_G1GC 2736 #if INCLUDE_PARALLELGC 2737 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 2738 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 2739 #endif 2740 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 2741 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 2742 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType}, 2743 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 2744 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 2745 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 2746 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 2747 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 2748 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 2749 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 2750 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena }, 2751 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena }, 2752 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc }, 2753 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 2754 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized}, 2755 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 2756 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 2757 (void*)&WB_DeoptimizeMethod }, 2758 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 2759 (void*)&WB_IsMethodCompiled }, 2760 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 2761 (void*)&WB_IsMethodCompilable}, 2762 {CC"isMethodQueuedForCompilation0", 2763 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 2764 {CC"isIntrinsicAvailable0", 2765 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2766 (void*)&WB_IsIntrinsicAvailable}, 2767 {CC"makeMethodNotCompilable0", 2768 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2769 {CC"testSetDontInlineMethod0", 2770 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2771 {CC"getMethodCompilationLevel0", 2772 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2773 {CC"getMethodDecompileCount0", 2774 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount}, 2775 {CC"getMethodTrapCount0", 2776 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2777 (void*)&WB_GetMethodTrapCount}, 2778 {CC"getDeoptCount0", 2779 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount}, 2780 {CC"getMethodEntryBci0", 2781 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2782 {CC"getCompileQueueSize", 2783 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2784 {CC"testSetForceInlineMethod0", 2785 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2786 {CC"enqueueMethodForCompilation0", 2787 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2788 {CC"enqueueInitializerForCompilation0", 2789 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2790 {CC"markMethodProfiled", 2791 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled}, 2792 {CC"clearMethodState0", 2793 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2794 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2795 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2796 {CC"matchesMethod", 2797 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2798 (void*)&WB_MatchesMethod}, 2799 {CC"matchesInline", 2800 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2801 (void*)&WB_MatchesInline}, 2802 {CC"shouldPrintAssembly", 2803 CC"(Ljava/lang/reflect/Executable;I)Z", 2804 (void*)&WB_ShouldPrintAssembly}, 2805 2806 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2807 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag}, 2808 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2809 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2810 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2811 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2812 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2813 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2814 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2815 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2816 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2817 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2818 (void*)&WB_SetStringVMFlag}, 2819 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2820 (void*)&WB_GetBooleanVMFlag}, 2821 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2822 (void*)&WB_GetIntVMFlag}, 2823 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2824 (void*)&WB_GetUintVMFlag}, 2825 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2826 (void*)&WB_GetIntxVMFlag}, 2827 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2828 (void*)&WB_GetUintxVMFlag}, 2829 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2830 (void*)&WB_GetUint64VMFlag}, 2831 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2832 (void*)&WB_GetSizeTVMFlag}, 2833 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2834 (void*)&WB_GetDoubleVMFlag}, 2835 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2836 (void*)&WB_GetStringVMFlag}, 2837 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2838 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2839 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2840 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2841 {CC"allocateMetaspace", 2842 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2843 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2844 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2845 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment }, 2846 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2847 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2848 (void*)&WB_GetNMethod }, 2849 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2850 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2851 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2852 {CC"getCompilationActivityMode", 2853 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2854 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2855 (void*)&WB_GetMethodData }, 2856 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2857 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2858 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2859 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2860 (void*)&WB_DefineModule }, 2861 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2862 (void*)&WB_AddModuleExports }, 2863 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2864 (void*)&WB_AddReadsModule }, 2865 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2866 (void*)&WB_AddModuleExportsToAllUnnamed }, 2867 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2868 (void*)&WB_AddModuleExportsToAll }, 2869 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors }, 2870 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2871 {CC"getInUseMonitorCount", CC"()J", (void*)&WB_getInUseMonitorCount }, 2872 {CC"getLockStackCapacity", CC"()I", (void*)&WB_getLockStackCapacity }, 2873 {CC"supportsRecursiveLightweightLocking", CC"()Z", (void*)&WB_supportsRecursiveLightweightLocking }, 2874 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2875 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint }, 2876 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2877 {CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 2878 {CC"getFieldEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getFieldEntriesLength}, 2879 {CC"getFieldCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getFieldCPIndex}, 2880 {CC"getMethodEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getMethodEntriesLength}, 2881 {CC"getMethodCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getMethodCPIndex}, 2882 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength}, 2883 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex}, 2884 {CC"printClasses0", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printClasses}, 2885 {CC"printMethods0", CC"(Ljava/lang/String;Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printMethods}, 2886 {CC"getMethodBooleanOption", 2887 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2888 (void*)&WB_GetMethodBooleaneOption}, 2889 {CC"getMethodIntxOption", 2890 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2891 (void*)&WB_GetMethodIntxOption}, 2892 {CC"getMethodUintxOption", 2893 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2894 (void*)&WB_GetMethodUintxOption}, 2895 {CC"getMethodDoubleOption", 2896 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2897 (void*)&WB_GetMethodDoubleOption}, 2898 {CC"getMethodStringOption", 2899 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2900 (void*)&WB_GetMethodStringOption}, 2901 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;", 2902 (void*)&WB_GetDefaultArchivePath}, 2903 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion}, 2904 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion}, 2905 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled}, 2906 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString }, 2907 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2908 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped }, 2909 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass}, 2910 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2911 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded }, 2912 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded }, 2913 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded }, 2914 {CC"hasLibgraal", CC"()Z", (void*)&WB_HasLibgraal }, 2915 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded }, 2916 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC}, 2917 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive }, 2918 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed }, 2919 2920 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2921 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors }, 2922 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2923 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack }, 2924 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock}, 2925 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread }, 2926 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames }, 2927 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2928 (void*)&WB_AddCompilerDirective }, 2929 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2930 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported}, 2931 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler}, 2932 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected}, 2933 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically}, 2934 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints}, 2935 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl}, 2936 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl}, 2937 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle}, 2938 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z", 2939 (void*)&WB_ConcurrentGCRunTo}, 2940 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2941 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2942 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2943 {CC"validateCgroup", 2944 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I", 2945 (void*)&WB_ValidateCgroup }, 2946 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory }, 2947 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap }, 2948 {CC"hostCPUs", CC"()I", (void*)&WB_HostCPUs }, 2949 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2950 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 2951 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount }, 2952 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount }, 2953 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize}, 2954 2955 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext}, 2956 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext}, 2957 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext}, 2958 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext}, 2959 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext}, 2960 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext}, 2961 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext}, 2962 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena}, 2963 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena}, 2964 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena}, 2965 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize}, 2966 2967 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded}, 2968 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe}, 2969 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName}, 2970 2971 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical}, 2972 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical}, 2973 {CC"pinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_PinObject}, 2974 {CC"unpinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_UnpinObject}, 2975 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode}, 2976 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory}, 2977 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces}, 2978 {CC"rss", CC"()J", (void*)&WB_Rss}, 2979 {CC"printString", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_PrintString}, 2980 }; 2981 2982 2983 #undef CC 2984 2985 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2986 { 2987 if (WhiteBoxAPI) { 2988 // Make sure that wbclass is loaded by the null classloader 2989 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass))); 2990 Handle loader(THREAD, ik->class_loader()); 2991 if (loader.is_null()) { 2992 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2993 WhiteBox::set_used(); 2994 } 2995 } 2996 } 2997 JVM_END