1 /* 2 * Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 27 #include <new> 28 29 #include "classfile/classLoaderDataGraph.hpp" 30 #include "classfile/modules.hpp" 31 #include "classfile/protectionDomainCache.hpp" 32 #include "classfile/stringTable.hpp" 33 #include "code/codeCache.hpp" 34 #include "compiler/methodMatcher.hpp" 35 #include "compiler/directivesParser.hpp" 36 #include "gc/shared/gcConfig.hpp" 37 #include "gc/shared/genCollectedHeap.hpp" 38 #include "jvmtifiles/jvmtiEnv.hpp" 39 #include "memory/heapShared.inline.hpp" 40 #include "memory/metaspaceShared.hpp" 41 #include "memory/metadataFactory.hpp" 42 #include "memory/iterator.hpp" 43 #include "memory/resourceArea.hpp" 44 #include "memory/universe.hpp" 45 #include "memory/oopFactory.hpp" 46 #include "oops/array.hpp" 47 #include "oops/constantPool.inline.hpp" 48 #include "oops/method.inline.hpp" 49 #include "oops/objArrayKlass.hpp" 50 #include "oops/objArrayOop.inline.hpp" 51 #include "oops/oop.inline.hpp" 52 #include "oops/typeArrayOop.inline.hpp" 53 #include "prims/resolvedMethodTable.hpp" 54 #include "prims/wbtestmethods/parserTests.hpp" 55 #include "prims/whitebox.inline.hpp" 56 #include "runtime/arguments.hpp" 57 #include "runtime/compilationPolicy.hpp" 58 #include "runtime/deoptimization.hpp" 59 #include "runtime/fieldDescriptor.inline.hpp" 60 #include "runtime/flags/jvmFlag.hpp" 61 #include "runtime/frame.inline.hpp" 62 #include "runtime/handshake.hpp" 63 #include "runtime/interfaceSupport.inline.hpp" 64 #include "runtime/javaCalls.hpp" 65 #include "runtime/jniHandles.inline.hpp" 66 #include "runtime/os.hpp" 67 #include "runtime/sweeper.hpp" 68 #include "runtime/thread.hpp" 69 #include "runtime/threadSMR.hpp" 70 #include "runtime/vm_version.hpp" 71 #include "services/memoryService.hpp" 72 #include "utilities/align.hpp" 73 #include "utilities/debug.hpp" 74 #include "utilities/elfFile.hpp" 75 #include "utilities/exceptions.hpp" 76 #include "utilities/macros.hpp" 77 #if INCLUDE_CDS 78 #include "prims/cdsoffsets.hpp" 79 #endif // INCLUDE_CDS 80 #if INCLUDE_G1GC 81 #include "gc/g1/g1CollectedHeap.inline.hpp" 82 #include "gc/g1/g1ConcurrentMark.hpp" 83 #include "gc/g1/g1ConcurrentMarkThread.hpp" 84 #include "gc/g1/heapRegionRemSet.hpp" 85 #include "gc/g1/heterogeneousHeapRegionManager.hpp" 86 #endif // INCLUDE_G1GC 87 #if INCLUDE_PARALLELGC 88 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 89 #include "gc/parallel/adjoiningGenerations.hpp" 90 #endif // INCLUDE_PARALLELGC 91 #if INCLUDE_NMT 92 #include "services/mallocSiteTable.hpp" 93 #include "services/memTracker.hpp" 94 #include "utilities/nativeCallStack.hpp" 95 #endif // INCLUDE_NMT 96 #if INCLUDE_AOT 97 #include "aot/aotLoader.hpp" 98 #endif // INCLUDE_AOT 99 100 #ifdef LINUX 101 #include "osContainer_linux.hpp" 102 #endif 103 104 #define SIZE_T_MAX_VALUE ((size_t) -1) 105 106 #define CHECK_JNI_EXCEPTION_(env, value) \ 107 do { \ 108 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 109 THREAD->clear_pending_jni_exception_check(); \ 110 if (HAS_PENDING_EXCEPTION) { \ 111 return(value); \ 112 } \ 113 } while (0) 114 115 #define CHECK_JNI_EXCEPTION(env) \ 116 do { \ 117 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 118 THREAD->clear_pending_jni_exception_check(); \ 119 if (HAS_PENDING_EXCEPTION) { \ 120 return; \ 121 } \ 122 } while (0) 123 124 bool WhiteBox::_used = false; 125 volatile bool WhiteBox::compilation_locked = false; 126 127 class VM_WhiteBoxOperation : public VM_Operation { 128 public: 129 VM_WhiteBoxOperation() { } 130 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 131 bool allow_nested_vm_operations() const { return true; } 132 }; 133 134 135 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 136 return (jlong)(void*)JNIHandles::resolve(obj); 137 WB_END 138 139 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 140 return heapOopSize; 141 WB_END 142 143 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 144 return os::vm_page_size(); 145 WB_END 146 147 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 148 return os::vm_allocation_granularity(); 149 WB_END 150 151 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 152 return os::large_page_size(); 153 WB_END 154 155 class WBIsKlassAliveClosure : public LockedClassesDo { 156 Symbol* _name; 157 bool _found; 158 public: 159 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} 160 161 void do_klass(Klass* k) { 162 if (_found) return; 163 Symbol* ksym = k->name(); 164 if (ksym->fast_compare(_name) == 0) { 165 _found = true; 166 } 167 } 168 169 bool found() const { 170 return _found; 171 } 172 }; 173 174 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) 175 oop h_name = JNIHandles::resolve(name); 176 if (h_name == NULL) return false; 177 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false); 178 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 179 180 WBIsKlassAliveClosure closure(sym); 181 ClassLoaderDataGraph::classes_do(&closure); 182 183 return closure.found(); 184 WB_END 185 186 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name)) 187 oop h_name = JNIHandles::resolve(name); 188 if (h_name == NULL) return false; 189 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_0); 190 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 191 return (jint)sym->refcount(); 192 WB_END 193 194 195 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 196 #if INCLUDE_JVMTI 197 ResourceMark rm; 198 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 199 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 200 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 201 assert(err == JVMTI_ERROR_NONE, "must not fail"); 202 #endif 203 } 204 WB_END 205 206 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 207 #if INCLUDE_JVMTI 208 ResourceMark rm; 209 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 210 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 211 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 212 assert(err == JVMTI_ERROR_NONE, "must not fail"); 213 #endif 214 } 215 WB_END 216 217 218 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 219 return (jlong)Arguments::max_heap_for_compressed_oops(); 220 } 221 WB_END 222 223 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 224 CollectorPolicy * p = Universe::heap()->collector_policy(); 225 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " 226 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 227 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(), 228 p->space_alignment(), p->heap_alignment()); 229 } 230 WB_END 231 232 #ifndef PRODUCT 233 // Forward declaration 234 void TestReservedSpace_test(); 235 void TestReserveMemorySpecial_test(); 236 void TestVirtualSpace_test(); 237 void TestMetaspaceUtils_test(); 238 #endif 239 240 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) 241 #ifndef PRODUCT 242 TestReservedSpace_test(); 243 TestReserveMemorySpecial_test(); 244 TestVirtualSpace_test(); 245 TestMetaspaceUtils_test(); 246 #endif 247 WB_END 248 249 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 250 size_t granularity = os::vm_allocation_granularity(); 251 ReservedHeapSpace rhs(100 * granularity, granularity, false); 252 VirtualSpace vs; 253 vs.initialize(rhs, 50 * granularity); 254 255 // Check if constraints are complied 256 if (!( UseCompressedOops && rhs.base() != NULL && 257 Universe::narrow_oop_base() != NULL && 258 Universe::narrow_oop_use_implicit_null_checks() )) { 259 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 260 "\tUseCompressedOops is %d\n" 261 "\trhs.base() is " PTR_FORMAT "\n" 262 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n" 263 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d", 264 UseCompressedOops, 265 p2i(rhs.base()), 266 p2i(Universe::narrow_oop_base()), 267 Universe::narrow_oop_use_implicit_null_checks()); 268 return; 269 } 270 tty->print_cr("Reading from no access area... "); 271 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 272 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 273 WB_END 274 275 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 276 size_t magnitude, size_t iterations) { 277 size_t granularity = os::vm_allocation_granularity(); 278 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false); 279 VirtualSpace vs; 280 if (!vs.initialize(rhs, 0)) { 281 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 282 return 3; 283 } 284 285 int seed = os::random(); 286 tty->print_cr("Random seed is %d", seed); 287 os::init_random(seed); 288 289 for (size_t i = 0; i < iterations; i++) { 290 291 // Whether we will shrink or grow 292 bool shrink = os::random() % 2L == 0; 293 294 // Get random delta to resize virtual space 295 size_t delta = (size_t)os::random() % magnitude; 296 297 // If we are about to shrink virtual space below zero, then expand instead 298 if (shrink && vs.committed_size() < delta) { 299 shrink = false; 300 } 301 302 // Resizing by delta 303 if (shrink) { 304 vs.shrink_by(delta); 305 } else { 306 // If expanding fails expand_by will silently return false 307 vs.expand_by(delta, true); 308 } 309 } 310 return 0; 311 } 312 313 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 314 jlong reserved_space_size, jlong magnitude, jlong iterations)) 315 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 316 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 317 iterations); 318 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 319 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 320 return 1; 321 } 322 323 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 324 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 325 if (sizeof(size_t) < sizeof(jlong)) { 326 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; 327 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 328 || iterations > size_t_max_value) { 329 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 330 return 2; 331 } 332 } 333 334 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 335 (size_t) magnitude, (size_t) iterations); 336 WB_END 337 338 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name)) 339 return GCConfig::is_gc_supported((CollectedHeap::Name)name); 340 WB_END 341 342 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name)) 343 return GCConfig::is_gc_selected((CollectedHeap::Name)name); 344 WB_END 345 346 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o)) 347 return GCConfig::is_gc_selected_ergonomically(); 348 WB_END 349 350 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 351 oop p = JNIHandles::resolve(obj); 352 #if INCLUDE_G1GC 353 if (UseG1GC) { 354 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 355 const HeapRegion* hr = g1h->heap_region_containing(p); 356 if (hr == NULL) { 357 return false; 358 } 359 return !(hr->is_young()); 360 } 361 #endif 362 #if INCLUDE_PARALLELGC 363 if (UseParallelGC) { 364 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 365 return !psh->is_in_young(p); 366 } 367 #endif 368 #if INCLUDE_ZGC 369 if (UseZGC) { 370 return Universe::heap()->is_in(p); 371 } 372 #endif 373 GenCollectedHeap* gch = GenCollectedHeap::heap(); 374 return !gch->is_in_young(p); 375 WB_END 376 377 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 378 oop p = JNIHandles::resolve(obj); 379 return Universe::heap()->obj_size(p) * HeapWordSize; 380 WB_END 381 382 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 383 size_t alignment = Universe::heap()->collector_policy()->space_alignment(); 384 return (jlong)alignment; 385 WB_END 386 387 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 388 size_t alignment = Universe::heap()->collector_policy()->heap_alignment(); 389 return (jlong)alignment; 390 WB_END 391 392 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o)) 393 return Universe::heap()->supports_concurrent_phase_control(); 394 WB_END 395 396 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o)) 397 const char* const* phases = Universe::heap()->concurrent_phases(); 398 jint nphases = 0; 399 for ( ; phases[nphases] != NULL; ++nphases) ; 400 401 ResourceMark rm(thread); 402 ThreadToNativeFromVM ttn(thread); 403 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 404 CHECK_JNI_EXCEPTION_(env, NULL); 405 406 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL); 407 CHECK_JNI_EXCEPTION_(env, NULL); 408 409 // If push fails, return with pending exception. 410 if (env->PushLocalFrame(nphases) < 0) return NULL; 411 for (jint i = 0; i < nphases; ++i) { 412 jstring phase = env->NewStringUTF(phases[i]); 413 CHECK_JNI_EXCEPTION_(env, NULL); 414 env->SetObjectArrayElement(result, i, phase); 415 CHECK_JNI_EXCEPTION_(env, NULL); 416 } 417 env->PopLocalFrame(NULL); 418 419 return result; 420 WB_END 421 422 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name)) 423 Handle h_name(THREAD, JNIHandles::resolve(name)); 424 ResourceMark rm; 425 const char* c_name = java_lang_String::as_utf8_string(h_name()); 426 return Universe::heap()->request_concurrent_phase(c_name); 427 WB_END 428 429 #if INCLUDE_G1GC 430 431 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 432 if (UseG1GC) { 433 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 434 oop result = JNIHandles::resolve(obj); 435 const HeapRegion* hr = g1h->heap_region_containing(result); 436 return hr->is_humongous(); 437 } 438 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 439 WB_END 440 441 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 442 if (UseG1GC) { 443 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 444 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 445 return hr->is_humongous(); 446 } 447 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 448 WB_END 449 450 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 451 if (UseG1GC) { 452 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 453 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 454 return hr->is_free(); 455 } 456 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 457 WB_END 458 459 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 460 if (UseG1GC) { 461 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 462 size_t nr = g1h->max_regions(); 463 return (jlong)nr; 464 } 465 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 466 WB_END 467 468 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 469 if (UseG1GC) { 470 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 471 size_t nr = g1h->num_free_regions(); 472 return (jlong)nr; 473 } 474 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 475 WB_END 476 477 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 478 if (UseG1GC) { 479 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 480 return g1h->concurrent_mark()->cm_thread()->during_cycle(); 481 } 482 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 483 WB_END 484 485 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o)) 486 if (UseG1GC) { 487 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 488 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) { 489 g1h->collect(GCCause::_wb_conc_mark); 490 return true; 491 } 492 return false; 493 } 494 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled"); 495 WB_END 496 497 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 498 if (UseG1GC) { 499 return (jint)HeapRegion::GrainBytes; 500 } 501 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 502 WB_END 503 504 #endif // INCLUDE_G1GC 505 506 #if INCLUDE_G1GC || INCLUDE_PARALLELGC 507 WB_ENTRY(jlong, WB_DramReservedStart(JNIEnv* env, jobject o)) 508 #if INCLUDE_G1GC 509 if (UseG1GC) { 510 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 511 if (g1h->g1_collector_policy()->is_hetero_heap()) { 512 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_dram(); 513 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes); 514 } else { 515 return (jlong)g1h->base(); 516 } 517 } 518 #endif // INCLUDE_G1GC 519 #if INCLUDE_PARALLELGC 520 if (UseParallelGC) { 521 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 522 if (AllocateOldGenAt != NULL) { 523 MemRegion reserved = ps_heap->young_gen()->reserved(); 524 return (jlong)reserved.start(); 525 } else { 526 return (jlong)ps_heap->base(); 527 } 528 } 529 #endif // INCLUDE_PARALLELGC 530 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedStart: enabled only for G1 and Parallel GC"); 531 WB_END 532 533 WB_ENTRY(jlong, WB_DramReservedEnd(JNIEnv* env, jobject o)) 534 #if INCLUDE_G1GC 535 if (UseG1GC) { 536 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 537 if (g1h->g1_collector_policy()->is_hetero_heap()) { 538 uint end_region = HeterogeneousHeapRegionManager::manager()->end_index_of_dram(); 539 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1); 540 } else { 541 return (jlong)g1h->base() + g1h->collector_policy()->max_heap_byte_size(); 542 } 543 } 544 #endif // INCLUDE_G1GC 545 #if INCLUDE_PARALLELGC 546 if (UseParallelGC) { 547 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 548 if (AllocateOldGenAt != NULL) { 549 MemRegion reserved = ps_heap->young_gen()->reserved(); 550 return (jlong)reserved.end(); 551 } else { 552 return (jlong)ps_heap->reserved_region().end(); 553 } 554 } 555 #endif // INCLUDE_PARALLELGC 556 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedEnd: enabled only for G1 and Parallel GC"); 557 WB_END 558 559 WB_ENTRY(jlong, WB_NvdimmReservedStart(JNIEnv* env, jobject o)) 560 #if INCLUDE_G1GC 561 if (UseG1GC) { 562 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 563 if (g1h->g1_collector_policy()->is_hetero_heap()) { 564 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm(); 565 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes); 566 } else { 567 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 568 } 569 } 570 #endif // INCLUDE_G1GC 571 #if INCLUDE_PARALLELGC 572 if (UseParallelGC) { 573 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 574 if (AllocateOldGenAt != NULL) { 575 MemRegion reserved = ps_heap->old_gen()->reserved(); 576 return (jlong)reserved.start(); 577 } else { 578 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 579 } 580 } 581 #endif // INCLUDE_PARALLELGC 582 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: enabled only for G1 and Parallel GC"); 583 WB_END 584 585 WB_ENTRY(jlong, WB_NvdimmReservedEnd(JNIEnv* env, jobject o)) 586 #if INCLUDE_G1GC 587 if (UseG1GC) { 588 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 589 if (g1h->g1_collector_policy()->is_hetero_heap()) { 590 uint end_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm(); 591 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1); 592 } else { 593 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 594 } 595 } 596 #endif // INCLUDE_G1GC 597 #if INCLUDE_PARALLELGC 598 if (UseParallelGC) { 599 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 600 if (AllocateOldGenAt != NULL) { 601 MemRegion reserved = ps_heap->old_gen()->reserved(); 602 return (jlong)reserved.end(); 603 } else { 604 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 605 } 606 } 607 #endif // INCLUDE_PARALLELGC 608 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: enabled only for G1 and Parallel GC"); 609 WB_END 610 611 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC 612 613 #if INCLUDE_PARALLELGC 614 615 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 616 if (UseParallelGC) { 617 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment(); 618 } 619 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 620 WB_END 621 622 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 623 if (UseParallelGC) { 624 return ParallelScavengeHeap::heap()->generation_alignment(); 625 } 626 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 627 WB_END 628 629 #endif // INCLUDE_PARALLELGC 630 631 #if INCLUDE_G1GC 632 633 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 634 if (UseG1GC) { 635 ResourceMark rm(THREAD); 636 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 637 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 638 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 639 return JNIHandles::make_local(env, h()); 640 } 641 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 642 WB_END 643 644 class OldRegionsLivenessClosure: public HeapRegionClosure { 645 646 private: 647 const int _liveness; 648 size_t _total_count; 649 size_t _total_memory; 650 size_t _total_memory_to_free; 651 652 public: 653 OldRegionsLivenessClosure(int liveness) : 654 _liveness(liveness), 655 _total_count(0), 656 _total_memory(0), 657 _total_memory_to_free(0) { } 658 659 size_t total_count() { return _total_count; } 660 size_t total_memory() { return _total_memory; } 661 size_t total_memory_to_free() { return _total_memory_to_free; } 662 663 bool do_heap_region(HeapRegion* r) { 664 if (r->is_old()) { 665 size_t prev_live = r->marked_bytes(); 666 size_t live = r->live_bytes(); 667 size_t size = r->used(); 668 size_t reg_size = HeapRegion::GrainBytes; 669 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 670 _total_memory += size; 671 ++_total_count; 672 if (size == reg_size) { 673 // we don't include non-full regions since they are unlikely included in mixed gc 674 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 675 _total_memory_to_free += size - prev_live; 676 } 677 } 678 } 679 return false; 680 } 681 }; 682 683 684 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 685 if (!UseG1GC) { 686 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 687 } 688 if (liveness < 0) { 689 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 690 } 691 692 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 693 OldRegionsLivenessClosure rli(liveness); 694 g1h->heap_region_iterate(&rli); 695 696 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 697 result->long_at_put(0, rli.total_count()); 698 result->long_at_put(1, rli.total_memory()); 699 result->long_at_put(2, rli.total_memory_to_free()); 700 return (jlongArray) JNIHandles::make_local(env, result); 701 WB_END 702 703 #endif // INCLUDE_G1GC 704 705 #if INCLUDE_NMT 706 // Alloc memory using the test memory type so that we can use that to see if 707 // NMT picks it up correctly 708 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 709 jlong addr = 0; 710 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 711 return addr; 712 WB_END 713 714 // Alloc memory with pseudo call stack. The test can create psudo malloc 715 // allocation site to stress the malloc tracking. 716 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 717 address pc = (address)(size_t)pseudo_stack; 718 NativeCallStack stack(&pc, 1); 719 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 720 WB_END 721 722 // Free the memory allocated by NMTAllocTest 723 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 724 os::free((void*)(uintptr_t)mem); 725 WB_END 726 727 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 728 jlong addr = 0; 729 730 addr = (jlong)(uintptr_t)os::reserve_memory(size); 731 MemTracker::record_virtual_memory_type((address)addr, mtTest); 732 733 return addr; 734 WB_END 735 736 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size)) 737 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr); 738 MemTracker::record_virtual_memory_type((address)addr, mtTest); 739 740 return addr; 741 WB_END 742 743 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 744 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 745 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 746 WB_END 747 748 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 749 os::uncommit_memory((char *)(uintptr_t)addr, size); 750 WB_END 751 752 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 753 os::release_memory((char *)(uintptr_t)addr, size); 754 WB_END 755 756 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env)) 757 // Test that we can downgrade NMT levels but not upgrade them. 758 if (MemTracker::tracking_level() == NMT_off) { 759 MemTracker::transition_to(NMT_off); 760 return MemTracker::tracking_level() == NMT_off; 761 } else { 762 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking"); 763 MemTracker::transition_to(NMT_summary); 764 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now"); 765 766 // Can't go to detail once NMT is set to summary. 767 MemTracker::transition_to(NMT_detail); 768 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now"); 769 770 // Shutdown sets tracking level to minimal. 771 MemTracker::shutdown(); 772 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); 773 774 // Once the tracking level is minimal, we cannot increase to summary. 775 // The code ignores this request instead of asserting because if the malloc site 776 // table overflows in another thread, it tries to change the code to summary. 777 MemTracker::transition_to(NMT_summary); 778 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 779 780 // Really can never go up to detail, verify that the code would never do this. 781 MemTracker::transition_to(NMT_detail); 782 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 783 return MemTracker::tracking_level() == NMT_minimal; 784 } 785 WB_END 786 787 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 788 int hash_size = MallocSiteTable::hash_buckets(); 789 assert(hash_size > 0, "NMT hash_size should be > 0"); 790 return (jint)hash_size; 791 WB_END 792 #endif // INCLUDE_NMT 793 794 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 795 assert(method != NULL, "method should not be null"); 796 ThreadToNativeFromVM ttn(thread); 797 return env->FromReflectedMethod(method); 798 } 799 800 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 801 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 802 private: 803 int _result; 804 const bool _make_not_entrant; 805 public: 806 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 807 _result(0), _make_not_entrant(make_not_entrant) { } 808 int result() const { return _result; } 809 810 void doit() { 811 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 812 if (t->has_last_Java_frame()) { 813 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) { 814 frame* f = fst.current(); 815 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 816 RegisterMap* reg_map = fst.register_map(); 817 Deoptimization::deoptimize(t, *f, reg_map); 818 if (_make_not_entrant) { 819 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 820 assert(cm != NULL, "sanity check"); 821 cm->make_not_entrant(); 822 } 823 ++_result; 824 } 825 } 826 } 827 } 828 } 829 }; 830 831 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 832 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 833 VMThread::execute(&op); 834 return op.result(); 835 WB_END 836 837 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 838 MutexLockerEx mu(Compile_lock); 839 CodeCache::mark_all_nmethods_for_deoptimization(); 840 VM_Deoptimize op; 841 VMThread::execute(&op); 842 WB_END 843 844 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 845 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 846 int result = 0; 847 CHECK_JNI_EXCEPTION_(env, result); 848 MutexLockerEx mu(Compile_lock); 849 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 850 if (is_osr) { 851 result += mh->mark_osr_nmethods(); 852 } else if (mh->code() != NULL) { 853 mh->code()->mark_for_deoptimization(); 854 ++result; 855 } 856 result += CodeCache::mark_for_deoptimization(mh()); 857 if (result > 0) { 858 VM_Deoptimize op; 859 VMThread::execute(&op); 860 } 861 return result; 862 WB_END 863 864 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 865 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 866 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 867 MutexLockerEx mu(Compile_lock); 868 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 869 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 870 if (code == NULL) { 871 return JNI_FALSE; 872 } 873 return (code->is_alive() && !code->is_marked_for_deoptimization()); 874 WB_END 875 876 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 877 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 878 return false; 879 } 880 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 881 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 882 MutexLockerEx mu(Compile_lock); 883 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 884 if (is_osr) { 885 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); 886 } else { 887 return CompilationPolicy::can_be_compiled(mh, comp_level); 888 } 889 WB_END 890 891 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 892 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 893 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 894 MutexLockerEx mu(Compile_lock); 895 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 896 return mh->queued_for_compilation(); 897 WB_END 898 899 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 900 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 901 return false; // Intrinsic is not available on a non-existent compilation level. 902 } 903 jmethodID method_id, compilation_context_id; 904 method_id = reflected_method_to_jmid(thread, env, method); 905 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 906 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 907 908 DirectiveSet* directive; 909 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 910 assert(comp != NULL, "compiler not available"); 911 if (compilation_context != NULL) { 912 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 913 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 914 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 915 directive = DirectivesStack::getMatchingDirective(cch, comp); 916 } else { 917 // Calling with NULL matches default directive 918 directive = DirectivesStack::getDefaultDirective(comp); 919 } 920 bool result = comp->is_intrinsic_available(mh, directive); 921 DirectivesStack::release(directive); 922 return result; 923 WB_END 924 925 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 926 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 927 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 928 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 929 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 930 return (code != NULL ? code->comp_level() : CompLevel_none); 931 WB_END 932 933 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 934 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 935 CHECK_JNI_EXCEPTION(env); 936 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 937 if (is_osr) { 938 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox"); 939 } else { 940 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); 941 } 942 WB_END 943 944 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 945 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 946 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 947 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 948 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 949 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 950 WB_END 951 952 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 953 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 954 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 955 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 956 bool result = mh->dont_inline(); 957 mh->set_dont_inline(value == JNI_TRUE); 958 return result; 959 WB_END 960 961 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 962 if (comp_level == CompLevel_any) { 963 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 964 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 965 } else { 966 return CompileBroker::queue_size(comp_level); 967 } 968 WB_END 969 970 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 971 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 972 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 973 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 974 bool result = mh->force_inline(); 975 mh->set_force_inline(value == JNI_TRUE); 976 return result; 977 WB_END 978 979 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) { 980 // Screen for unavailable/bad comp level or null method 981 AbstractCompiler* comp = CompileBroker::compiler(comp_level); 982 if (method == NULL) { 983 tty->print_cr("WB error: request to compile NULL method"); 984 return false; 985 } 986 if (comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 987 tty->print_cr("WB error: invalid compilation level %d", comp_level); 988 return false; 989 } 990 if (comp == NULL) { 991 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level); 992 return false; 993 } 994 995 // Check if compilation is blocking 996 methodHandle mh(THREAD, method); 997 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 998 bool is_blocking = !directive->BackgroundCompilationOption; 999 DirectivesStack::release(directive); 1000 1001 // Compile method and check result 1002 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD); 1003 MutexLockerEx mu(Compile_lock); 1004 bool is_queued = mh->queued_for_compilation(); 1005 if ((!is_blocking && is_queued) || nm != NULL) { 1006 return true; 1007 } 1008 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level); 1009 mh->print_short_name(tty); 1010 tty->cr(); 1011 if (is_blocking && is_queued) { 1012 tty->print_cr("WB error: blocking compilation is still in queue!"); 1013 } 1014 return false; 1015 } 1016 1017 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 1018 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1019 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1020 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 1021 WB_END 1022 1023 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 1024 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1025 Method* clinit = ik->class_initializer(); 1026 if (clinit == NULL) { 1027 return false; 1028 } 1029 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD); 1030 WB_END 1031 1032 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 1033 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1034 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1035 1036 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1037 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 1038 bool result = directive->PrintAssemblyOption; 1039 DirectivesStack::release(directive); 1040 1041 return result; 1042 WB_END 1043 1044 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1045 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1046 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1047 1048 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1049 1050 ResourceMark rm; 1051 const char* error_msg = NULL; 1052 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1053 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 1054 1055 if (m == NULL) { 1056 assert(error_msg != NULL, "Always have an error message"); 1057 tty->print_cr("Got error: %s", error_msg); 1058 return -1; // Pattern failed 1059 } 1060 1061 // Pattern works - now check if it matches 1062 int result; 1063 if (m->match(mh, InlineMatcher::force_inline)) { 1064 result = 2; // Force inline match 1065 } else if (m->match(mh, InlineMatcher::dont_inline)) { 1066 result = 1; // Dont inline match 1067 } else { 1068 result = 0; // No match 1069 } 1070 delete m; 1071 return result; 1072 WB_END 1073 1074 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1075 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1076 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1077 1078 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1079 1080 ResourceMark rm; 1081 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1082 1083 const char* error_msg = NULL; 1084 1085 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg); 1086 if (m == NULL) { 1087 assert(error_msg != NULL, "Must have error_msg"); 1088 tty->print_cr("Got error: %s", error_msg); 1089 return -1; 1090 } 1091 1092 // Pattern works - now check if it matches 1093 int result = m->matches(mh); 1094 delete m; 1095 assert(result == 0 || result == 1, "Result out of range"); 1096 return result; 1097 WB_END 1098 1099 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 1100 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1101 CHECK_JNI_EXCEPTION(env); 1102 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1103 MutexLockerEx mu(Compile_lock); 1104 MethodData* mdo = mh->method_data(); 1105 MethodCounters* mcs = mh->method_counters(); 1106 1107 if (mdo != NULL) { 1108 mdo->init(); 1109 ResourceMark rm; 1110 int arg_count = mdo->method()->size_of_parameters(); 1111 for (int i = 0; i < arg_count; i++) { 1112 mdo->set_arg_modified(i, 0); 1113 } 1114 MutexLockerEx mu(mdo->extra_data_lock()); 1115 mdo->clean_method_data(/*always_clean*/true); 1116 } 1117 1118 mh->clear_not_c1_compilable(); 1119 mh->clear_not_c2_compilable(); 1120 mh->clear_not_c2_osr_compilable(); 1121 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 1122 if (mcs != NULL) { 1123 mcs->backedge_counter()->init(); 1124 mcs->invocation_counter()->init(); 1125 mcs->set_interpreter_invocation_count(0); 1126 mcs->set_interpreter_throwout_count(0); 1127 1128 #ifdef TIERED 1129 mcs->set_rate(0.0F); 1130 mh->set_prev_event_count(0); 1131 mh->set_prev_time(0); 1132 #endif 1133 } 1134 WB_END 1135 1136 template <typename T> 1137 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const char*, T*, bool, bool)) { 1138 if (name == NULL) { 1139 return false; 1140 } 1141 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1142 const char* flag_name = env->GetStringUTFChars(name, NULL); 1143 CHECK_JNI_EXCEPTION_(env, false); 1144 JVMFlag::Error result = (*TAt)(flag_name, value, true, true); 1145 env->ReleaseStringUTFChars(name, flag_name); 1146 return (result == JVMFlag::SUCCESS); 1147 } 1148 1149 template <typename T> 1150 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(const char*, T*, JVMFlag::Flags)) { 1151 if (name == NULL) { 1152 return false; 1153 } 1154 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1155 const char* flag_name = env->GetStringUTFChars(name, NULL); 1156 CHECK_JNI_EXCEPTION_(env, false); 1157 JVMFlag::Error result = (*TAtPut)(flag_name, value, JVMFlag::INTERNAL); 1158 env->ReleaseStringUTFChars(name, flag_name); 1159 return (result == JVMFlag::SUCCESS); 1160 } 1161 1162 template <typename T> 1163 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1164 ResourceMark rm(thread); 1165 jclass clazz = env->FindClass(name->as_C_string()); 1166 CHECK_JNI_EXCEPTION_(env, NULL); 1167 jmethodID methodID = env->GetStaticMethodID(clazz, 1168 vmSymbols::valueOf_name()->as_C_string(), 1169 sig->as_C_string()); 1170 CHECK_JNI_EXCEPTION_(env, NULL); 1171 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1172 CHECK_JNI_EXCEPTION_(env, NULL); 1173 return result; 1174 } 1175 1176 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1177 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1178 } 1179 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1180 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1181 } 1182 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1183 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1184 } 1185 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1186 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1187 }*/ 1188 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1189 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1190 } 1191 1192 static JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1193 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1194 const char* flag_name = env->GetStringUTFChars(name, NULL); 1195 CHECK_JNI_EXCEPTION_(env, NULL); 1196 JVMFlag* result = JVMFlag::find_flag(flag_name, strlen(flag_name), true, true); 1197 env->ReleaseStringUTFChars(name, flag_name); 1198 return result; 1199 } 1200 1201 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1202 JVMFlag* flag = getVMFlag(thread, env, name); 1203 return (flag != NULL) && flag->is_constant_in_binary(); 1204 WB_END 1205 1206 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1207 JVMFlag* flag = getVMFlag(thread, env, name); 1208 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 1209 WB_END 1210 1211 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1212 bool result; 1213 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) { 1214 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1215 return booleanBox(thread, env, result); 1216 } 1217 return NULL; 1218 WB_END 1219 1220 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1221 int result; 1222 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) { 1223 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1224 return longBox(thread, env, result); 1225 } 1226 return NULL; 1227 WB_END 1228 1229 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1230 uint result; 1231 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) { 1232 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1233 return longBox(thread, env, result); 1234 } 1235 return NULL; 1236 WB_END 1237 1238 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1239 intx result; 1240 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) { 1241 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1242 return longBox(thread, env, result); 1243 } 1244 return NULL; 1245 WB_END 1246 1247 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1248 uintx result; 1249 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) { 1250 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1251 return longBox(thread, env, result); 1252 } 1253 return NULL; 1254 WB_END 1255 1256 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1257 uint64_t result; 1258 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) { 1259 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1260 return longBox(thread, env, result); 1261 } 1262 return NULL; 1263 WB_END 1264 1265 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1266 size_t result; 1267 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) { 1268 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1269 return longBox(thread, env, result); 1270 } 1271 return NULL; 1272 WB_END 1273 1274 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1275 double result; 1276 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) { 1277 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1278 return doubleBox(thread, env, result); 1279 } 1280 return NULL; 1281 WB_END 1282 1283 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1284 ccstr ccstrResult; 1285 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) { 1286 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1287 jstring result = env->NewStringUTF(ccstrResult); 1288 CHECK_JNI_EXCEPTION_(env, NULL); 1289 return result; 1290 } 1291 return NULL; 1292 WB_END 1293 1294 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1295 bool result = value == JNI_TRUE ? true : false; 1296 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut); 1297 WB_END 1298 1299 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1300 int result = value; 1301 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut); 1302 WB_END 1303 1304 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1305 uint result = value; 1306 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut); 1307 WB_END 1308 1309 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1310 intx result = value; 1311 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut); 1312 WB_END 1313 1314 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1315 uintx result = value; 1316 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut); 1317 WB_END 1318 1319 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1320 uint64_t result = value; 1321 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut); 1322 WB_END 1323 1324 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1325 size_t result = value; 1326 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut); 1327 WB_END 1328 1329 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1330 double result = value; 1331 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut); 1332 WB_END 1333 1334 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1335 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1336 const char* ccstrValue; 1337 if (value == NULL) { 1338 ccstrValue = NULL; 1339 } 1340 else { 1341 ccstrValue = env->GetStringUTFChars(value, NULL); 1342 CHECK_JNI_EXCEPTION(env); 1343 } 1344 ccstr ccstrResult = ccstrValue; 1345 bool needFree; 1346 { 1347 ThreadInVMfromNative ttvfn(thread); // back to VM 1348 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut); 1349 } 1350 if (value != NULL) { 1351 env->ReleaseStringUTFChars(value, ccstrValue); 1352 } 1353 if (needFree) { 1354 FREE_C_HEAP_ARRAY(char, ccstrResult); 1355 } 1356 WB_END 1357 1358 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1359 WhiteBox::compilation_locked = true; 1360 WB_END 1361 1362 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1363 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1364 WhiteBox::compilation_locked = false; 1365 mo.notify_all(); 1366 WB_END 1367 1368 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 1369 // Force a code cache sweep and block until it finished 1370 NMethodSweeper::force_sweep(); 1371 WB_END 1372 1373 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1374 ResourceMark rm(THREAD); 1375 int len; 1376 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1377 return (StringTable::lookup(name, len) != NULL); 1378 WB_END 1379 1380 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1381 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1382 Universe::heap()->collect(GCCause::_wb_full_gc); 1383 #if INCLUDE_G1GC 1384 if (UseG1GC) { 1385 // Needs to be cleared explicitly for G1 1386 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1387 } 1388 #endif // INCLUDE_G1GC 1389 WB_END 1390 1391 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1392 Universe::heap()->collect(GCCause::_wb_young_gc); 1393 WB_END 1394 1395 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1396 // static+volatile in order to force the read to happen 1397 // (not be eliminated by the compiler) 1398 static char c; 1399 static volatile char* p; 1400 1401 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 1402 if (p == NULL) { 1403 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1404 } 1405 1406 c = *p; 1407 WB_END 1408 1409 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1410 const char* features = VM_Version::features_string(); 1411 ThreadToNativeFromVM ttn(thread); 1412 jstring features_string = env->NewStringUTF(features); 1413 1414 CHECK_JNI_EXCEPTION_(env, NULL); 1415 1416 return features_string; 1417 WB_END 1418 1419 int WhiteBox::get_blob_type(const CodeBlob* code) { 1420 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1421 if (code->is_aot()) { 1422 return -1; 1423 } 1424 return CodeCache::get_code_heap(code)->code_blob_type(); 1425 } 1426 1427 CodeHeap* WhiteBox::get_code_heap(int blob_type) { 1428 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1429 return CodeCache::get_code_heap(blob_type); 1430 } 1431 1432 struct CodeBlobStub { 1433 CodeBlobStub(const CodeBlob* blob) : 1434 name(os::strdup(blob->name())), 1435 size(blob->size()), 1436 blob_type(WhiteBox::get_blob_type(blob)), 1437 address((jlong) blob) { } 1438 ~CodeBlobStub() { os::free((void*) name); } 1439 const char* const name; 1440 const jint size; 1441 const jint blob_type; 1442 const jlong address; 1443 }; 1444 1445 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1446 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1447 CHECK_JNI_EXCEPTION_(env, NULL); 1448 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1449 1450 jstring name = env->NewStringUTF(cb->name); 1451 CHECK_JNI_EXCEPTION_(env, NULL); 1452 env->SetObjectArrayElement(result, 0, name); 1453 1454 jobject obj = integerBox(thread, env, cb->size); 1455 CHECK_JNI_EXCEPTION_(env, NULL); 1456 env->SetObjectArrayElement(result, 1, obj); 1457 1458 obj = integerBox(thread, env, cb->blob_type); 1459 CHECK_JNI_EXCEPTION_(env, NULL); 1460 env->SetObjectArrayElement(result, 2, obj); 1461 1462 obj = longBox(thread, env, cb->address); 1463 CHECK_JNI_EXCEPTION_(env, NULL); 1464 env->SetObjectArrayElement(result, 3, obj); 1465 1466 return result; 1467 } 1468 1469 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1470 ResourceMark rm(THREAD); 1471 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1472 CHECK_JNI_EXCEPTION_(env, NULL); 1473 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1474 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1475 jobjectArray result = NULL; 1476 if (code == NULL) { 1477 return result; 1478 } 1479 int comp_level = code->comp_level(); 1480 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size(); 1481 1482 ThreadToNativeFromVM ttn(thread); 1483 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1484 CHECK_JNI_EXCEPTION_(env, NULL); 1485 result = env->NewObjectArray(5, clazz, NULL); 1486 if (result == NULL) { 1487 return result; 1488 } 1489 1490 CodeBlobStub stub(code); 1491 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1492 CHECK_JNI_EXCEPTION_(env, NULL); 1493 env->SetObjectArrayElement(result, 0, codeBlob); 1494 1495 jobject level = integerBox(thread, env, comp_level); 1496 CHECK_JNI_EXCEPTION_(env, NULL); 1497 env->SetObjectArrayElement(result, 1, level); 1498 1499 jbyteArray insts = env->NewByteArray(insts_size); 1500 CHECK_JNI_EXCEPTION_(env, NULL); 1501 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1502 env->SetObjectArrayElement(result, 2, insts); 1503 1504 jobject id = integerBox(thread, env, code->compile_id()); 1505 CHECK_JNI_EXCEPTION_(env, NULL); 1506 env->SetObjectArrayElement(result, 3, id); 1507 1508 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1509 CHECK_JNI_EXCEPTION_(env, NULL); 1510 env->SetObjectArrayElement(result, 4, entry_point); 1511 1512 return result; 1513 WB_END 1514 1515 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1516 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1517 BufferBlob* blob; 1518 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1519 if (full_size < size) { 1520 full_size += align_up(size - full_size, oopSize); 1521 } 1522 { 1523 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1524 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1525 if (blob != NULL) { 1526 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1527 } 1528 } 1529 // Track memory usage statistic after releasing CodeCache_lock 1530 MemoryService::track_code_cache_memory_usage(); 1531 return blob; 1532 } 1533 1534 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1535 if (size < 0) { 1536 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1537 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1538 } 1539 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1540 WB_END 1541 1542 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1543 if (addr == 0) { 1544 return; 1545 } 1546 BufferBlob::free((BufferBlob*) addr); 1547 WB_END 1548 1549 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1550 ResourceMark rm; 1551 GrowableArray<CodeBlobStub*> blobs; 1552 { 1553 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1554 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1555 if (heap == NULL) { 1556 return NULL; 1557 } 1558 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1559 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1560 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1561 new (stub) CodeBlobStub(cb); 1562 blobs.append(stub); 1563 } 1564 } 1565 if (blobs.length() == 0) { 1566 return NULL; 1567 } 1568 ThreadToNativeFromVM ttn(thread); 1569 jobjectArray result = NULL; 1570 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1571 CHECK_JNI_EXCEPTION_(env, NULL); 1572 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1573 CHECK_JNI_EXCEPTION_(env, NULL); 1574 if (result == NULL) { 1575 return result; 1576 } 1577 int i = 0; 1578 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1579 it != blobs.end(); ++it) { 1580 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1581 CHECK_JNI_EXCEPTION_(env, NULL); 1582 env->SetObjectArrayElement(result, i, obj); 1583 CHECK_JNI_EXCEPTION_(env, NULL); 1584 ++i; 1585 } 1586 return result; 1587 WB_END 1588 1589 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1590 return CompileBroker::get_compilation_activity_mode(); 1591 WB_END 1592 1593 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1594 if (addr == 0) { 1595 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1596 "WB_GetCodeBlob: addr is null"); 1597 } 1598 ThreadToNativeFromVM ttn(thread); 1599 CodeBlobStub stub((CodeBlob*) addr); 1600 return codeBlob2objectArray(thread, env, &stub); 1601 WB_END 1602 1603 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1604 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1605 CHECK_JNI_EXCEPTION_(env, 0); 1606 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1607 return (jlong) mh->method_data(); 1608 WB_END 1609 1610 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1611 return (jlong) Thread::current()->stack_size(); 1612 WB_END 1613 1614 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1615 JavaThread* t = JavaThread::current(); 1616 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size(); 1617 WB_END 1618 1619 1620 int WhiteBox::array_bytes_to_length(size_t bytes) { 1621 return Array<u1>::bytes_to_length(bytes); 1622 } 1623 1624 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1625 if (size < 0) { 1626 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1627 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1628 } 1629 1630 oop class_loader_oop = JNIHandles::resolve(class_loader); 1631 ClassLoaderData* cld = class_loader_oop != NULL 1632 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1633 : ClassLoaderData::the_null_class_loader_data(); 1634 1635 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1636 1637 return (jlong)(uintptr_t)metadata; 1638 WB_END 1639 1640 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 1641 oop class_loader_oop = JNIHandles::resolve(class_loader); 1642 ClassLoaderData* cld = class_loader_oop != NULL 1643 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1644 : ClassLoaderData::the_null_class_loader_data(); 1645 1646 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 1647 WB_END 1648 1649 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1650 jstring version, jstring location, jobjectArray packages)) 1651 ResourceMark rm(THREAD); 1652 1653 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages)); 1654 objArrayHandle packages_h(THREAD, packages_oop); 1655 int num_packages = (packages_h == NULL ? 0 : packages_h->length()); 1656 1657 char** pkgs = NULL; 1658 if (num_packages > 0) { 1659 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages); 1660 for (int x = 0; x < num_packages; x++) { 1661 oop pkg_str = packages_h->obj_at(x); 1662 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) { 1663 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 1664 err_msg("Bad package name")); 1665 } 1666 pkgs[x] = java_lang_String::as_utf8_string(pkg_str); 1667 } 1668 } 1669 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK); 1670 WB_END 1671 1672 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1673 ResourceMark rm(THREAD); 1674 char* package_name = NULL; 1675 if (package != NULL) { 1676 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1677 } 1678 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK); 1679 WB_END 1680 1681 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1682 ResourceMark rm(THREAD); 1683 char* package_name = NULL; 1684 if (package != NULL) { 1685 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1686 } 1687 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK); 1688 WB_END 1689 1690 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1691 ResourceMark rm(THREAD); 1692 char* package_name = NULL; 1693 if (package != NULL) { 1694 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1695 } 1696 Modules::add_module_exports(module, package_name, NULL, CHECK); 1697 WB_END 1698 1699 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1700 Modules::add_reads_module(from_module, source_module, CHECK); 1701 WB_END 1702 1703 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1704 if (inc < 0) { 1705 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1706 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1707 } 1708 1709 jlong max_size_t = (jlong) ((size_t) -1); 1710 if (inc > max_size_t) { 1711 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1712 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1713 } 1714 1715 size_t new_cap_until_GC = 0; 1716 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1717 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1718 if (!success) { 1719 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1720 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1721 "due to contention with another thread"); 1722 } 1723 return (jlong) new_cap_until_GC; 1724 WB_END 1725 1726 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1727 return (jlong) MetaspaceGC::capacity_until_GC(); 1728 WB_END 1729 1730 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb)) 1731 return MetaspaceGC::should_concurrent_collect(); 1732 WB_END 1733 1734 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb)) 1735 return (jlong)Metaspace::reserve_alignment(); 1736 WB_END 1737 1738 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue)) 1739 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ? 1740 Monitor::_safepoint_check_always : 1741 Monitor::_safepoint_check_never; 1742 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required), 1743 attemptedNoSafepointValue == JNI_TRUE); 1744 WB_END 1745 1746 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1747 oop obj_oop = JNIHandles::resolve(obj); 1748 return (jboolean) obj_oop->mark()->has_monitor(); 1749 WB_END 1750 1751 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1752 VM_ForceSafepoint force_safepoint_op; 1753 VMThread::execute(&force_safepoint_op); 1754 WB_END 1755 1756 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1757 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1758 return (jlong) ik->constants(); 1759 WB_END 1760 1761 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1762 return ConstantPool::CPCACHE_INDEX_TAG; 1763 WB_END 1764 1765 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1766 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1767 ConstantPool* cp = ik->constants(); 1768 if (cp->cache() == NULL) { 1769 return -1; 1770 } 1771 return cp->cache()->length(); 1772 WB_END 1773 1774 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1775 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1776 ConstantPool* cp = ik->constants(); 1777 if (cp->cache() == NULL) { 1778 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1779 } 1780 jint cpci = index; 1781 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1782 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1783 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1784 } 1785 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1786 return cpi; 1787 WB_END 1788 1789 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1790 return ConstantPool::encode_invokedynamic_index(index); 1791 WB_END 1792 1793 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1794 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1795 VMThread::execute(&clear_ics); 1796 WB_END 1797 1798 template <typename T> 1799 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1800 assert(value != NULL, "sanity"); 1801 if (method == NULL || name == NULL) { 1802 return false; 1803 } 1804 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1805 CHECK_JNI_EXCEPTION_(env, false); 1806 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1807 // can't be in VM when we call JNI 1808 ThreadToNativeFromVM ttnfv(thread); 1809 const char* flag_name = env->GetStringUTFChars(name, NULL); 1810 CHECK_JNI_EXCEPTION_(env, false); 1811 bool result = CompilerOracle::has_option_value(mh, flag_name, *value); 1812 env->ReleaseStringUTFChars(name, flag_name); 1813 return result; 1814 } 1815 1816 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1817 bool result; 1818 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1819 // can't be in VM when we call JNI 1820 ThreadToNativeFromVM ttnfv(thread); 1821 return booleanBox(thread, env, result); 1822 } 1823 return NULL; 1824 WB_END 1825 1826 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1827 intx result; 1828 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1829 // can't be in VM when we call JNI 1830 ThreadToNativeFromVM ttnfv(thread); 1831 return longBox(thread, env, result); 1832 } 1833 return NULL; 1834 WB_END 1835 1836 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1837 uintx result; 1838 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1839 // can't be in VM when we call JNI 1840 ThreadToNativeFromVM ttnfv(thread); 1841 return longBox(thread, env, result); 1842 } 1843 return NULL; 1844 WB_END 1845 1846 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1847 double result; 1848 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1849 // can't be in VM when we call JNI 1850 ThreadToNativeFromVM ttnfv(thread); 1851 return doubleBox(thread, env, result); 1852 } 1853 return NULL; 1854 WB_END 1855 1856 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1857 ccstr ccstrResult; 1858 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 1859 // can't be in VM when we call JNI 1860 ThreadToNativeFromVM ttnfv(thread); 1861 jstring result = env->NewStringUTF(ccstrResult); 1862 CHECK_JNI_EXCEPTION_(env, NULL); 1863 return result; 1864 } 1865 return NULL; 1866 WB_END 1867 1868 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb)) 1869 const char* p = Arguments::get_default_shared_archive_path(); 1870 ThreadToNativeFromVM ttn(thread); 1871 jstring path_string = env->NewStringUTF(p); 1872 1873 CHECK_JNI_EXCEPTION_(env, NULL); 1874 1875 return path_string; 1876 WB_END 1877 1878 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb)) 1879 return UseSharedSpaces; 1880 WB_END 1881 1882 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 1883 oop obj_oop = JNIHandles::resolve(obj); 1884 return HeapShared::is_archived_object(obj_oop); 1885 WB_END 1886 1887 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 1888 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1889 WB_END 1890 1891 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env)) 1892 return !HeapShared::closed_archive_heap_region_mapped(); 1893 WB_END 1894 1895 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz)) 1896 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 1897 if (k->is_instance_klass()) { 1898 InstanceKlass *ik = InstanceKlass::cast(k); 1899 ConstantPool *cp = ik->constants(); 1900 objArrayOop refs = cp->resolved_references(); 1901 return (jobject)JNIHandles::make_local(env, refs); 1902 } else { 1903 return NULL; 1904 } 1905 WB_END 1906 1907 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 1908 return HeapShared::open_archive_heap_region_mapped(); 1909 WB_END 1910 1911 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env)) 1912 #if INCLUDE_CDS 1913 # ifdef _LP64 1914 if (!UseCompressedOops || !UseCompressedClassPointers) { 1915 // On 64-bit VMs, CDS is supported only with compressed oops/pointers 1916 return false; 1917 } 1918 # endif // _LP64 1919 return true; 1920 #else 1921 return false; 1922 #endif // INCLUDE_CDS 1923 WB_END 1924 1925 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env)) 1926 return HeapShared::is_heap_object_archiving_allowed(); 1927 WB_END 1928 1929 1930 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env)) 1931 #if INCLUDE_JFR 1932 return true; 1933 #else 1934 return false; 1935 #endif // INCLUDE_JFR 1936 WB_END 1937 1938 #if INCLUDE_CDS 1939 1940 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name)) 1941 ResourceMark rm; 1942 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 1943 int result = CDSOffsets::find_offset(c_name); 1944 return (jint)result; 1945 WB_END 1946 1947 #endif // INCLUDE_CDS 1948 1949 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 1950 class TraceSelfClosure : public ThreadClosure { 1951 jint _num_threads_completed; 1952 1953 void do_thread(Thread* th) { 1954 assert(th->is_Java_thread(), "sanity"); 1955 JavaThread* jt = (JavaThread*)th; 1956 ResourceMark rm; 1957 1958 jt->print_on(tty); 1959 jt->print_stack_on(tty); 1960 tty->cr(); 1961 Atomic::inc(&_num_threads_completed); 1962 } 1963 1964 public: 1965 TraceSelfClosure() : _num_threads_completed(0) {} 1966 1967 jint num_threads_completed() const { return _num_threads_completed; } 1968 }; 1969 TraceSelfClosure tsc; 1970 1971 if (all_threads) { 1972 Handshake::execute(&tsc); 1973 } else { 1974 oop thread_oop = JNIHandles::resolve(thread_handle); 1975 if (thread_oop != NULL) { 1976 JavaThread* target = java_lang_Thread::thread(thread_oop); 1977 Handshake::execute(&tsc, target); 1978 } 1979 } 1980 return tsc.num_threads_completed(); 1981 WB_END 1982 1983 //Some convenience methods to deal with objects from java 1984 int WhiteBox::offset_for_field(const char* field_name, oop object, 1985 Symbol* signature_symbol) { 1986 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 1987 Thread* THREAD = Thread::current(); 1988 1989 //Get the class of our object 1990 Klass* arg_klass = object->klass(); 1991 //Turn it into an instance-klass 1992 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 1993 1994 //Create symbols to look for in the class 1995 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), 1996 THREAD); 1997 1998 //To be filled in with an offset of the field we're looking for 1999 fieldDescriptor fd; 2000 2001 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 2002 if (res == NULL) { 2003 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 2004 name_symbol->as_C_string()); 2005 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 2006 } 2007 2008 //fetch the field at the offset we've found 2009 int dest_offset = fd.offset(); 2010 2011 return dest_offset; 2012 } 2013 2014 2015 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 2016 int offset = offset_for_field(field_name, object, 2017 vmSymbols::string_signature()); 2018 oop string = object->obj_field(offset); 2019 if (string == NULL) { 2020 return NULL; 2021 } 2022 const char* ret = java_lang_String::as_utf8_string(string); 2023 return ret; 2024 } 2025 2026 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 2027 int offset = 2028 offset_for_field(field_name, object, vmSymbols::bool_signature()); 2029 bool ret = (object->bool_field(offset) == JNI_TRUE); 2030 return ret; 2031 } 2032 2033 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 2034 ResourceMark rm; 2035 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 2036 2037 // one by one registration natives for exception catching 2038 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 2039 CHECK_JNI_EXCEPTION(env); 2040 for (int i = 0, n = method_count; i < n; ++i) { 2041 // Skip dummy entries 2042 if (method_array[i].fnPtr == NULL) continue; 2043 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 2044 jthrowable throwable_obj = env->ExceptionOccurred(); 2045 if (throwable_obj != NULL) { 2046 env->ExceptionClear(); 2047 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 2048 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 2049 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 2050 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 2051 method_array[i].name, method_array[i].signature); 2052 } 2053 } else { 2054 // Registration failed unexpectedly. 2055 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 2056 method_array[i].name, method_array[i].signature); 2057 env->UnregisterNatives(wbclass); 2058 break; 2059 } 2060 } 2061 } 2062 } 2063 2064 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 2065 // can't be in VM when we call JNI 2066 ThreadToNativeFromVM ttnfv(thread); 2067 const char* dir = env->GetStringUTFChars(compDirect, NULL); 2068 CHECK_JNI_EXCEPTION_(env, 0); 2069 int ret; 2070 { 2071 ThreadInVMfromNative ttvfn(thread); // back to VM 2072 ret = DirectivesParser::parse_string(dir, tty); 2073 } 2074 env->ReleaseStringUTFChars(compDirect, dir); 2075 // -1 for error parsing directive. Return 0 as number of directives added. 2076 if (ret == -1) { 2077 ret = 0; 2078 } 2079 return (jint) ret; 2080 WB_END 2081 2082 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 2083 DirectivesStack::pop(count); 2084 WB_END 2085 2086 // Checks that the library libfile has the noexecstack bit set. 2087 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 2088 jboolean ret = false; 2089 #ifdef LINUX 2090 // Can't be in VM when we call JNI. 2091 ThreadToNativeFromVM ttnfv(thread); 2092 const char* lf = env->GetStringUTFChars(libfile, NULL); 2093 CHECK_JNI_EXCEPTION_(env, 0); 2094 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 2095 env->ReleaseStringUTFChars(libfile, lf); 2096 #endif 2097 return ret; 2098 WB_END 2099 2100 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 2101 LINUX_ONLY(return OSContainer::is_containerized();) 2102 return false; 2103 WB_END 2104 2105 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 2106 os::print_os_info(tty); 2107 WB_END 2108 2109 // Elf decoder 2110 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 2111 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 2112 ElfFile::_do_not_cache_elf_section = true; 2113 #endif 2114 WB_END 2115 2116 WB_ENTRY(jint, WB_ResolvedMethodRemovedCount(JNIEnv* env, jobject o)) 2117 return (jint) ResolvedMethodTable::removed_entries_count(); 2118 WB_END 2119 2120 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o)) 2121 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count(); 2122 WB_END 2123 2124 WB_ENTRY(jint, WB_AotLibrariesCount(JNIEnv* env, jobject o)) 2125 jint result = 0; 2126 #if INCLUDE_AOT 2127 result = (jint) AOTLoader::libraries_count(); 2128 #endif 2129 return result; 2130 WB_END 2131 2132 #define CC (char*) 2133 2134 static JNINativeMethod methods[] = { 2135 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 2136 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 2137 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 2138 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 2139 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 2140 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 2141 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 2142 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 2143 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 2144 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, 2145 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount }, 2146 {CC"parseCommandLine0", 2147 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 2148 (void*) &WB_ParseCommandLine 2149 }, 2150 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2151 (void*)&WB_AddToBootstrapClassLoaderSearch}, 2152 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2153 (void*)&WB_AddToSystemClassLoaderSearch}, 2154 {CC"getCompressedOopsMaxHeapSize", CC"()J", 2155 (void*)&WB_GetCompressedOopsMaxHeapSize}, 2156 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 2157 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 2158 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 2159 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 2160 #if INCLUDE_CDS 2161 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName}, 2162 #endif 2163 #if INCLUDE_G1GC 2164 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 2165 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 2166 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 2167 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 2168 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 2169 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 2170 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 2171 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 2172 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 2173 (void*)&WB_G1AuxiliaryMemoryUsage }, 2174 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 2175 #endif // INCLUDE_G1GC 2176 #if INCLUDE_G1GC || INCLUDE_PARALLELGC 2177 {CC"dramReservedStart", CC"()J", (void*)&WB_DramReservedStart }, 2178 {CC"dramReservedEnd", CC"()J", (void*)&WB_DramReservedEnd }, 2179 {CC"nvdimmReservedStart", CC"()J", (void*)&WB_NvdimmReservedStart }, 2180 {CC"nvdimmReservedEnd", CC"()J", (void*)&WB_NvdimmReservedEnd }, 2181 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC 2182 #if INCLUDE_PARALLELGC 2183 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 2184 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 2185 #endif 2186 #if INCLUDE_NMT 2187 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 2188 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 2189 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 2190 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 2191 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 2192 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 2193 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 2194 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 2195 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 2196 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 2197 #endif // INCLUDE_NMT 2198 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 2199 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 2200 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 2201 (void*)&WB_DeoptimizeMethod }, 2202 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 2203 (void*)&WB_IsMethodCompiled }, 2204 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 2205 (void*)&WB_IsMethodCompilable}, 2206 {CC"isMethodQueuedForCompilation0", 2207 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 2208 {CC"isIntrinsicAvailable0", 2209 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2210 (void*)&WB_IsIntrinsicAvailable}, 2211 {CC"makeMethodNotCompilable0", 2212 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2213 {CC"testSetDontInlineMethod0", 2214 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2215 {CC"getMethodCompilationLevel0", 2216 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2217 {CC"getMethodEntryBci0", 2218 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2219 {CC"getCompileQueueSize", 2220 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2221 {CC"testSetForceInlineMethod0", 2222 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2223 {CC"enqueueMethodForCompilation0", 2224 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2225 {CC"enqueueInitializerForCompilation0", 2226 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2227 {CC"clearMethodState0", 2228 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2229 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2230 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2231 {CC"matchesMethod", 2232 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2233 (void*)&WB_MatchesMethod}, 2234 {CC"matchesInline", 2235 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2236 (void*)&WB_MatchesInline}, 2237 {CC"shouldPrintAssembly", 2238 CC"(Ljava/lang/reflect/Executable;I)Z", 2239 (void*)&WB_ShouldPrintAssembly}, 2240 2241 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2242 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2243 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2244 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2245 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2246 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2247 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2248 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2249 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2250 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2251 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2252 (void*)&WB_SetStringVMFlag}, 2253 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2254 (void*)&WB_GetBooleanVMFlag}, 2255 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2256 (void*)&WB_GetIntVMFlag}, 2257 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2258 (void*)&WB_GetUintVMFlag}, 2259 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2260 (void*)&WB_GetIntxVMFlag}, 2261 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2262 (void*)&WB_GetUintxVMFlag}, 2263 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2264 (void*)&WB_GetUint64VMFlag}, 2265 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2266 (void*)&WB_GetSizeTVMFlag}, 2267 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2268 (void*)&WB_GetDoubleVMFlag}, 2269 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2270 (void*)&WB_GetStringVMFlag}, 2271 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2272 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2273 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2274 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2275 {CC"allocateMetaspace", 2276 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2277 {CC"freeMetaspace", 2278 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 2279 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2280 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2281 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect }, 2282 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment }, 2283 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2284 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2285 (void*)&WB_GetNMethod }, 2286 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 2287 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2288 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2289 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2290 {CC"getCompilationActivityMode", 2291 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2292 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2293 (void*)&WB_GetMethodData }, 2294 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2295 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2296 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2297 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2298 (void*)&WB_DefineModule }, 2299 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2300 (void*)&WB_AddModuleExports }, 2301 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2302 (void*)&WB_AddReadsModule }, 2303 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2304 (void*)&WB_AddModuleExportsToAllUnnamed }, 2305 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2306 (void*)&WB_AddModuleExportsToAll }, 2307 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls }, 2308 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2309 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2310 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2311 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 2312 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 2313 {CC"remapInstructionOperandFromCPCache0", 2314 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 2315 {CC"encodeConstantPoolIndyIndex0", 2316 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 2317 {CC"getMethodBooleanOption", 2318 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2319 (void*)&WB_GetMethodBooleaneOption}, 2320 {CC"getMethodIntxOption", 2321 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2322 (void*)&WB_GetMethodIntxOption}, 2323 {CC"getMethodUintxOption", 2324 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2325 (void*)&WB_GetMethodUintxOption}, 2326 {CC"getMethodDoubleOption", 2327 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2328 (void*)&WB_GetMethodDoubleOption}, 2329 {CC"getMethodStringOption", 2330 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2331 (void*)&WB_GetMethodStringOption}, 2332 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;", 2333 (void*)&WB_GetDefaultArchivePath}, 2334 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled}, 2335 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 2336 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2337 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored }, 2338 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 2339 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2340 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild }, 2341 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild }, 2342 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported }, 2343 2344 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2345 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2346 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2347 (void*)&WB_AddCompilerDirective }, 2348 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2349 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported}, 2350 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected}, 2351 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically}, 2352 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl}, 2353 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;", 2354 (void*)&WB_GetConcurrentGCPhases}, 2355 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z", 2356 (void*)&WB_RequestConcurrentGCPhase}, 2357 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2358 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2359 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2360 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2361 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 2362 {CC"resolvedMethodRemovedCount", CC"()I", (void*)&WB_ResolvedMethodRemovedCount }, 2363 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount }, 2364 {CC"aotLibrariesCount", CC"()I", (void*)&WB_AotLibrariesCount }, 2365 }; 2366 2367 2368 #undef CC 2369 2370 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2371 { 2372 if (WhiteBoxAPI) { 2373 // Make sure that wbclass is loaded by the null classloader 2374 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass()); 2375 Handle loader(THREAD, ik->class_loader()); 2376 if (loader.is_null()) { 2377 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2378 WhiteBox::set_used(); 2379 } 2380 } 2381 } 2382 JVM_END