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/handles.inline.hpp" 63 #include "runtime/handshake.hpp" 64 #include "runtime/interfaceSupport.inline.hpp" 65 #include "runtime/javaCalls.hpp" 66 #include "runtime/jniHandles.inline.hpp" 67 #include "runtime/os.hpp" 68 #include "runtime/sweeper.hpp" 69 #include "runtime/thread.hpp" 70 #include "runtime/threadSMR.hpp" 71 #include "runtime/vm_version.hpp" 72 #include "services/memoryService.hpp" 73 #include "utilities/align.hpp" 74 #include "utilities/debug.hpp" 75 #include "utilities/elfFile.hpp" 76 #include "utilities/exceptions.hpp" 77 #include "utilities/macros.hpp" 78 #if INCLUDE_CDS 79 #include "prims/cdsoffsets.hpp" 80 #endif // INCLUDE_CDS 81 #if INCLUDE_G1GC 82 #include "gc/g1/g1CollectedHeap.inline.hpp" 83 #include "gc/g1/g1ConcurrentMark.hpp" 84 #include "gc/g1/g1ConcurrentMarkThread.hpp" 85 #include "gc/g1/heapRegionRemSet.hpp" 86 #include "gc/g1/heterogeneousHeapRegionManager.hpp" 87 #endif // INCLUDE_G1GC 88 #if INCLUDE_PARALLELGC 89 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 90 #include "gc/parallel/adjoiningGenerations.hpp" 91 #endif // INCLUDE_PARALLELGC 92 #if INCLUDE_NMT 93 #include "services/mallocSiteTable.hpp" 94 #include "services/memTracker.hpp" 95 #include "utilities/nativeCallStack.hpp" 96 #endif // INCLUDE_NMT 97 #if INCLUDE_AOT 98 #include "aot/aotLoader.hpp" 99 #endif // INCLUDE_AOT 100 101 #ifdef LINUX 102 #include "osContainer_linux.hpp" 103 #endif 104 105 #define SIZE_T_MAX_VALUE ((size_t) -1) 106 107 #define CHECK_JNI_EXCEPTION_(env, value) \ 108 do { \ 109 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 110 THREAD->clear_pending_jni_exception_check(); \ 111 if (HAS_PENDING_EXCEPTION) { \ 112 return(value); \ 113 } \ 114 } while (0) 115 116 #define CHECK_JNI_EXCEPTION(env) \ 117 do { \ 118 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \ 119 THREAD->clear_pending_jni_exception_check(); \ 120 if (HAS_PENDING_EXCEPTION) { \ 121 return; \ 122 } \ 123 } while (0) 124 125 bool WhiteBox::_used = false; 126 volatile bool WhiteBox::compilation_locked = false; 127 128 class VM_WhiteBoxOperation : public VM_Operation { 129 public: 130 VM_WhiteBoxOperation() { } 131 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 132 bool allow_nested_vm_operations() const { return true; } 133 }; 134 135 136 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 137 return (jlong)(void*)JNIHandles::resolve(obj); 138 WB_END 139 140 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 141 return heapOopSize; 142 WB_END 143 144 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 145 return os::vm_page_size(); 146 WB_END 147 148 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 149 return os::vm_allocation_granularity(); 150 WB_END 151 152 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 153 return os::large_page_size(); 154 WB_END 155 156 class WBIsKlassAliveClosure : public LockedClassesDo { 157 Symbol* _name; 158 bool _found; 159 public: 160 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} 161 162 void do_klass(Klass* k) { 163 if (_found) return; 164 Symbol* ksym = k->name(); 165 if (ksym->fast_compare(_name) == 0) { 166 _found = true; 167 } 168 } 169 170 bool found() const { 171 return _found; 172 } 173 }; 174 175 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) 176 oop h_name = JNIHandles::resolve(name); 177 if (h_name == NULL) return false; 178 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false); 179 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 180 181 WBIsKlassAliveClosure closure(sym); 182 ClassLoaderDataGraph::classes_do(&closure); 183 184 return closure.found(); 185 WB_END 186 187 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name)) 188 oop h_name = JNIHandles::resolve(name); 189 if (h_name == NULL) return false; 190 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_0); 191 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 192 return (jint)sym->refcount(); 193 WB_END 194 195 196 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 197 #if INCLUDE_JVMTI 198 ResourceMark rm; 199 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 200 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 201 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 202 assert(err == JVMTI_ERROR_NONE, "must not fail"); 203 #endif 204 } 205 WB_END 206 207 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 208 #if INCLUDE_JVMTI 209 ResourceMark rm; 210 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 211 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 212 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 213 assert(err == JVMTI_ERROR_NONE, "must not fail"); 214 #endif 215 } 216 WB_END 217 218 219 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 220 return (jlong)Arguments::max_heap_for_compressed_oops(); 221 } 222 WB_END 223 224 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 225 CollectorPolicy * p = Universe::heap()->collector_policy(); 226 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " 227 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 228 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(), 229 p->space_alignment(), p->heap_alignment()); 230 } 231 WB_END 232 233 #ifndef PRODUCT 234 // Forward declaration 235 void TestReservedSpace_test(); 236 void TestReserveMemorySpecial_test(); 237 void TestVirtualSpace_test(); 238 void TestMetaspaceUtils_test(); 239 #endif 240 241 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) 242 #ifndef PRODUCT 243 TestReservedSpace_test(); 244 TestReserveMemorySpecial_test(); 245 TestVirtualSpace_test(); 246 TestMetaspaceUtils_test(); 247 #endif 248 WB_END 249 250 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 251 size_t granularity = os::vm_allocation_granularity(); 252 ReservedHeapSpace rhs(100 * granularity, granularity, false); 253 VirtualSpace vs; 254 vs.initialize(rhs, 50 * granularity); 255 256 // Check if constraints are complied 257 if (!( UseCompressedOops && rhs.base() != NULL && 258 Universe::narrow_oop_base() != NULL && 259 Universe::narrow_oop_use_implicit_null_checks() )) { 260 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 261 "\tUseCompressedOops is %d\n" 262 "\trhs.base() is " PTR_FORMAT "\n" 263 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n" 264 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d", 265 UseCompressedOops, 266 p2i(rhs.base()), 267 p2i(Universe::narrow_oop_base()), 268 Universe::narrow_oop_use_implicit_null_checks()); 269 return; 270 } 271 tty->print_cr("Reading from no access area... "); 272 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 273 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 274 WB_END 275 276 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 277 size_t magnitude, size_t iterations) { 278 size_t granularity = os::vm_allocation_granularity(); 279 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false); 280 VirtualSpace vs; 281 if (!vs.initialize(rhs, 0)) { 282 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 283 return 3; 284 } 285 286 int seed = os::random(); 287 tty->print_cr("Random seed is %d", seed); 288 os::init_random(seed); 289 290 for (size_t i = 0; i < iterations; i++) { 291 292 // Whether we will shrink or grow 293 bool shrink = os::random() % 2L == 0; 294 295 // Get random delta to resize virtual space 296 size_t delta = (size_t)os::random() % magnitude; 297 298 // If we are about to shrink virtual space below zero, then expand instead 299 if (shrink && vs.committed_size() < delta) { 300 shrink = false; 301 } 302 303 // Resizing by delta 304 if (shrink) { 305 vs.shrink_by(delta); 306 } else { 307 // If expanding fails expand_by will silently return false 308 vs.expand_by(delta, true); 309 } 310 } 311 return 0; 312 } 313 314 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 315 jlong reserved_space_size, jlong magnitude, jlong iterations)) 316 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 317 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 318 iterations); 319 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 320 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 321 return 1; 322 } 323 324 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 325 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 326 if (sizeof(size_t) < sizeof(jlong)) { 327 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; 328 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 329 || iterations > size_t_max_value) { 330 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 331 return 2; 332 } 333 } 334 335 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 336 (size_t) magnitude, (size_t) iterations); 337 WB_END 338 339 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name)) 340 return GCConfig::is_gc_supported((CollectedHeap::Name)name); 341 WB_END 342 343 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name)) 344 return GCConfig::is_gc_selected((CollectedHeap::Name)name); 345 WB_END 346 347 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o)) 348 return GCConfig::is_gc_selected_ergonomically(); 349 WB_END 350 351 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 352 oop p = JNIHandles::resolve(obj); 353 #if INCLUDE_G1GC 354 if (UseG1GC) { 355 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 356 const HeapRegion* hr = g1h->heap_region_containing(p); 357 if (hr == NULL) { 358 return false; 359 } 360 return !(hr->is_young()); 361 } 362 #endif 363 #if INCLUDE_PARALLELGC 364 if (UseParallelGC) { 365 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 366 return !psh->is_in_young(p); 367 } 368 #endif 369 #if INCLUDE_ZGC 370 if (UseZGC) { 371 return Universe::heap()->is_in(p); 372 } 373 #endif 374 GenCollectedHeap* gch = GenCollectedHeap::heap(); 375 return !gch->is_in_young(p); 376 WB_END 377 378 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 379 oop p = JNIHandles::resolve(obj); 380 return Universe::heap()->obj_size(p) * HeapWordSize; 381 WB_END 382 383 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 384 size_t alignment = Universe::heap()->collector_policy()->space_alignment(); 385 return (jlong)alignment; 386 WB_END 387 388 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 389 size_t alignment = Universe::heap()->collector_policy()->heap_alignment(); 390 return (jlong)alignment; 391 WB_END 392 393 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o)) 394 return Universe::heap()->supports_concurrent_phase_control(); 395 WB_END 396 397 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name)) 398 Handle h_name(THREAD, JNIHandles::resolve(name)); 399 ResourceMark rm; 400 const char* c_name = java_lang_String::as_utf8_string(h_name()); 401 return Universe::heap()->request_concurrent_phase(c_name); 402 WB_END 403 404 #if INCLUDE_G1GC 405 406 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 407 if (UseG1GC) { 408 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 409 oop result = JNIHandles::resolve(obj); 410 const HeapRegion* hr = g1h->heap_region_containing(result); 411 return hr->is_humongous(); 412 } 413 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled"); 414 WB_END 415 416 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 417 if (UseG1GC) { 418 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 419 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 420 return hr->is_humongous(); 421 } 422 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled"); 423 WB_END 424 425 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 426 if (UseG1GC) { 427 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 428 const HeapRegion* hr = g1h->heap_region_containing((void*) addr); 429 return hr->is_free(); 430 } 431 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled"); 432 WB_END 433 434 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 435 if (UseG1GC) { 436 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 437 size_t nr = g1h->max_regions(); 438 return (jlong)nr; 439 } 440 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled"); 441 WB_END 442 443 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 444 if (UseG1GC) { 445 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 446 size_t nr = g1h->num_free_regions(); 447 return (jlong)nr; 448 } 449 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled"); 450 WB_END 451 452 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 453 if (UseG1GC) { 454 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 455 return g1h->concurrent_mark()->cm_thread()->during_cycle(); 456 } 457 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled"); 458 WB_END 459 460 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o)) 461 if (UseG1GC) { 462 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 463 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) { 464 g1h->collect(GCCause::_wb_conc_mark); 465 return true; 466 } 467 return false; 468 } 469 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled"); 470 WB_END 471 472 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 473 if (UseG1GC) { 474 return (jint)HeapRegion::GrainBytes; 475 } 476 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled"); 477 WB_END 478 479 #endif // INCLUDE_G1GC 480 481 #if INCLUDE_G1GC || INCLUDE_PARALLELGC 482 WB_ENTRY(jlong, WB_DramReservedStart(JNIEnv* env, jobject o)) 483 #if INCLUDE_G1GC 484 if (UseG1GC) { 485 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 486 if (g1h->g1_collector_policy()->is_hetero_heap()) { 487 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_dram(); 488 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes); 489 } else { 490 return (jlong)g1h->base(); 491 } 492 } 493 #endif // INCLUDE_G1GC 494 #if INCLUDE_PARALLELGC 495 if (UseParallelGC) { 496 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 497 if (AllocateOldGenAt != NULL) { 498 MemRegion reserved = ps_heap->young_gen()->reserved(); 499 return (jlong)reserved.start(); 500 } else { 501 return (jlong)ps_heap->base(); 502 } 503 } 504 #endif // INCLUDE_PARALLELGC 505 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedStart: enabled only for G1 and Parallel GC"); 506 WB_END 507 508 WB_ENTRY(jlong, WB_DramReservedEnd(JNIEnv* env, jobject o)) 509 #if INCLUDE_G1GC 510 if (UseG1GC) { 511 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 512 if (g1h->g1_collector_policy()->is_hetero_heap()) { 513 uint end_region = HeterogeneousHeapRegionManager::manager()->end_index_of_dram(); 514 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1); 515 } else { 516 return (jlong)g1h->base() + g1h->collector_policy()->max_heap_byte_size(); 517 } 518 } 519 #endif // INCLUDE_G1GC 520 #if INCLUDE_PARALLELGC 521 if (UseParallelGC) { 522 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 523 if (AllocateOldGenAt != NULL) { 524 MemRegion reserved = ps_heap->young_gen()->reserved(); 525 return (jlong)reserved.end(); 526 } else { 527 return (jlong)ps_heap->reserved_region().end(); 528 } 529 } 530 #endif // INCLUDE_PARALLELGC 531 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedEnd: enabled only for G1 and Parallel GC"); 532 WB_END 533 534 WB_ENTRY(jlong, WB_NvdimmReservedStart(JNIEnv* env, jobject o)) 535 #if INCLUDE_G1GC 536 if (UseG1GC) { 537 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 538 if (g1h->g1_collector_policy()->is_hetero_heap()) { 539 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm(); 540 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes); 541 } else { 542 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 543 } 544 } 545 #endif // INCLUDE_G1GC 546 #if INCLUDE_PARALLELGC 547 if (UseParallelGC) { 548 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 549 if (AllocateOldGenAt != NULL) { 550 MemRegion reserved = ps_heap->old_gen()->reserved(); 551 return (jlong)reserved.start(); 552 } else { 553 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 554 } 555 } 556 #endif // INCLUDE_PARALLELGC 557 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: enabled only for G1 and Parallel GC"); 558 WB_END 559 560 WB_ENTRY(jlong, WB_NvdimmReservedEnd(JNIEnv* env, jobject o)) 561 #if INCLUDE_G1GC 562 if (UseG1GC) { 563 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 564 if (g1h->g1_collector_policy()->is_hetero_heap()) { 565 uint end_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm(); 566 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1); 567 } else { 568 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 569 } 570 } 571 #endif // INCLUDE_G1GC 572 #if INCLUDE_PARALLELGC 573 if (UseParallelGC) { 574 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap(); 575 if (AllocateOldGenAt != NULL) { 576 MemRegion reserved = ps_heap->old_gen()->reserved(); 577 return (jlong)reserved.end(); 578 } else { 579 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag"); 580 } 581 } 582 #endif // INCLUDE_PARALLELGC 583 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: enabled only for G1 and Parallel GC"); 584 WB_END 585 586 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC 587 588 #if INCLUDE_PARALLELGC 589 590 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 591 if (UseParallelGC) { 592 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment(); 593 } 594 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 595 WB_END 596 597 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 598 if (UseParallelGC) { 599 return ParallelScavengeHeap::heap()->generation_alignment(); 600 } 601 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 602 WB_END 603 604 #endif // INCLUDE_PARALLELGC 605 606 #if INCLUDE_G1GC 607 608 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 609 if (UseG1GC) { 610 ResourceMark rm(THREAD); 611 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 612 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 613 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 614 return JNIHandles::make_local(env, h()); 615 } 616 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled"); 617 WB_END 618 619 class OldRegionsLivenessClosure: public HeapRegionClosure { 620 621 private: 622 const int _liveness; 623 size_t _total_count; 624 size_t _total_memory; 625 size_t _total_memory_to_free; 626 627 public: 628 OldRegionsLivenessClosure(int liveness) : 629 _liveness(liveness), 630 _total_count(0), 631 _total_memory(0), 632 _total_memory_to_free(0) { } 633 634 size_t total_count() { return _total_count; } 635 size_t total_memory() { return _total_memory; } 636 size_t total_memory_to_free() { return _total_memory_to_free; } 637 638 bool do_heap_region(HeapRegion* r) { 639 if (r->is_old()) { 640 size_t prev_live = r->marked_bytes(); 641 size_t live = r->live_bytes(); 642 size_t size = r->used(); 643 size_t reg_size = HeapRegion::GrainBytes; 644 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 645 _total_memory += size; 646 ++_total_count; 647 if (size == reg_size) { 648 // we don't include non-full regions since they are unlikely included in mixed gc 649 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 650 _total_memory_to_free += size - prev_live; 651 } 652 } 653 } 654 return false; 655 } 656 }; 657 658 659 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 660 if (!UseG1GC) { 661 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled"); 662 } 663 if (liveness < 0) { 664 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 665 } 666 667 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 668 OldRegionsLivenessClosure rli(liveness); 669 g1h->heap_region_iterate(&rli); 670 671 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 672 result->long_at_put(0, rli.total_count()); 673 result->long_at_put(1, rli.total_memory()); 674 result->long_at_put(2, rli.total_memory_to_free()); 675 return (jlongArray) JNIHandles::make_local(env, result); 676 WB_END 677 678 #endif // INCLUDE_G1GC 679 680 #if INCLUDE_NMT 681 // Alloc memory using the test memory type so that we can use that to see if 682 // NMT picks it up correctly 683 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 684 jlong addr = 0; 685 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 686 return addr; 687 WB_END 688 689 // Alloc memory with pseudo call stack. The test can create psudo malloc 690 // allocation site to stress the malloc tracking. 691 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 692 address pc = (address)(size_t)pseudo_stack; 693 NativeCallStack stack(&pc, 1); 694 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 695 WB_END 696 697 // Alloc memory with pseudo call stack and specific memory type. 698 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type)) 699 address pc = (address)(size_t)pseudo_stack; 700 NativeCallStack stack(&pc, 1); 701 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack); 702 WB_END 703 704 // Free the memory allocated by NMTAllocTest 705 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 706 os::free((void*)(uintptr_t)mem); 707 WB_END 708 709 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 710 jlong addr = 0; 711 712 addr = (jlong)(uintptr_t)os::reserve_memory(size); 713 MemTracker::record_virtual_memory_type((address)addr, mtTest); 714 715 return addr; 716 WB_END 717 718 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size)) 719 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr); 720 MemTracker::record_virtual_memory_type((address)addr, mtTest); 721 722 return addr; 723 WB_END 724 725 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 726 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 727 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 728 WB_END 729 730 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 731 os::uncommit_memory((char *)(uintptr_t)addr, size); 732 WB_END 733 734 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 735 os::release_memory((char *)(uintptr_t)addr, size); 736 WB_END 737 738 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env)) 739 // Test that we can downgrade NMT levels but not upgrade them. 740 if (MemTracker::tracking_level() == NMT_off) { 741 MemTracker::transition_to(NMT_off); 742 return MemTracker::tracking_level() == NMT_off; 743 } else { 744 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking"); 745 MemTracker::transition_to(NMT_summary); 746 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now"); 747 748 // Can't go to detail once NMT is set to summary. 749 MemTracker::transition_to(NMT_detail); 750 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now"); 751 752 // Shutdown sets tracking level to minimal. 753 MemTracker::shutdown(); 754 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); 755 756 // Once the tracking level is minimal, we cannot increase to summary. 757 // The code ignores this request instead of asserting because if the malloc site 758 // table overflows in another thread, it tries to change the code to summary. 759 MemTracker::transition_to(NMT_summary); 760 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 761 762 // Really can never go up to detail, verify that the code would never do this. 763 MemTracker::transition_to(NMT_detail); 764 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 765 return MemTracker::tracking_level() == NMT_minimal; 766 } 767 WB_END 768 769 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 770 int hash_size = MallocSiteTable::hash_buckets(); 771 assert(hash_size > 0, "NMT hash_size should be > 0"); 772 return (jint)hash_size; 773 WB_END 774 #endif // INCLUDE_NMT 775 776 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 777 assert(method != NULL, "method should not be null"); 778 ThreadToNativeFromVM ttn(thread); 779 return env->FromReflectedMethod(method); 780 } 781 782 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 783 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 784 private: 785 int _result; 786 const bool _make_not_entrant; 787 public: 788 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 789 _result(0), _make_not_entrant(make_not_entrant) { } 790 int result() const { return _result; } 791 792 void doit() { 793 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) { 794 if (t->has_last_Java_frame()) { 795 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) { 796 frame* f = fst.current(); 797 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 798 RegisterMap* reg_map = fst.register_map(); 799 Deoptimization::deoptimize(t, *f, reg_map); 800 if (_make_not_entrant) { 801 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 802 assert(cm != NULL, "sanity check"); 803 cm->make_not_entrant(); 804 } 805 ++_result; 806 } 807 } 808 } 809 } 810 } 811 }; 812 813 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 814 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 815 VMThread::execute(&op); 816 return op.result(); 817 WB_END 818 819 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 820 MutexLockerEx mu(Compile_lock); 821 CodeCache::mark_all_nmethods_for_deoptimization(); 822 VM_Deoptimize op; 823 VMThread::execute(&op); 824 WB_END 825 826 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 827 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 828 int result = 0; 829 CHECK_JNI_EXCEPTION_(env, result); 830 MutexLockerEx mu(Compile_lock); 831 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 832 if (is_osr) { 833 result += mh->mark_osr_nmethods(); 834 } else if (mh->code() != NULL) { 835 mh->code()->mark_for_deoptimization(); 836 ++result; 837 } 838 result += CodeCache::mark_for_deoptimization(mh()); 839 if (result > 0) { 840 VM_Deoptimize op; 841 VMThread::execute(&op); 842 } 843 return result; 844 WB_END 845 846 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 847 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 848 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 849 MutexLockerEx mu(Compile_lock); 850 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 851 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 852 if (code == NULL) { 853 return JNI_FALSE; 854 } 855 return (code->is_alive() && !code->is_marked_for_deoptimization()); 856 WB_END 857 858 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 859 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 860 return false; 861 } 862 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 863 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 864 MutexLockerEx mu(Compile_lock); 865 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 866 if (is_osr) { 867 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); 868 } else { 869 return CompilationPolicy::can_be_compiled(mh, comp_level); 870 } 871 WB_END 872 873 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 874 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 875 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 876 MutexLockerEx mu(Compile_lock); 877 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 878 return mh->queued_for_compilation(); 879 WB_END 880 881 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 882 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 883 return false; // Intrinsic is not available on a non-existent compilation level. 884 } 885 jmethodID method_id, compilation_context_id; 886 method_id = reflected_method_to_jmid(thread, env, method); 887 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 888 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 889 890 DirectiveSet* directive; 891 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 892 assert(comp != NULL, "compiler not available"); 893 if (compilation_context != NULL) { 894 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 895 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 896 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 897 directive = DirectivesStack::getMatchingDirective(cch, comp); 898 } else { 899 // Calling with NULL matches default directive 900 directive = DirectivesStack::getDefaultDirective(comp); 901 } 902 bool result = comp->is_intrinsic_available(mh, directive); 903 DirectivesStack::release(directive); 904 return result; 905 WB_END 906 907 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 908 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 909 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 910 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 911 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 912 return (code != NULL ? code->comp_level() : CompLevel_none); 913 WB_END 914 915 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 916 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 917 CHECK_JNI_EXCEPTION(env); 918 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 919 if (is_osr) { 920 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox"); 921 } else { 922 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); 923 } 924 WB_END 925 926 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 927 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 928 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 929 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 930 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 931 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 932 WB_END 933 934 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 935 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 936 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 937 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 938 bool result = mh->dont_inline(); 939 mh->set_dont_inline(value == JNI_TRUE); 940 return result; 941 WB_END 942 943 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 944 if (comp_level == CompLevel_any) { 945 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 946 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 947 } else { 948 return CompileBroker::queue_size(comp_level); 949 } 950 WB_END 951 952 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(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->force_inline(); 957 mh->set_force_inline(value == JNI_TRUE); 958 return result; 959 WB_END 960 961 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) { 962 // Screen for unavailable/bad comp level or null method 963 AbstractCompiler* comp = CompileBroker::compiler(comp_level); 964 if (method == NULL) { 965 tty->print_cr("WB error: request to compile NULL method"); 966 return false; 967 } 968 if (comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 969 tty->print_cr("WB error: invalid compilation level %d", comp_level); 970 return false; 971 } 972 if (comp == NULL) { 973 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level); 974 return false; 975 } 976 977 // Check if compilation is blocking 978 methodHandle mh(THREAD, method); 979 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp); 980 bool is_blocking = !directive->BackgroundCompilationOption; 981 DirectivesStack::release(directive); 982 983 // Compile method and check result 984 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD); 985 MutexLockerEx mu(Compile_lock); 986 bool is_queued = mh->queued_for_compilation(); 987 if ((!is_blocking && is_queued) || nm != NULL) { 988 return true; 989 } 990 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level); 991 mh->print_short_name(tty); 992 tty->cr(); 993 if (is_blocking && is_queued) { 994 tty->print_cr("WB error: blocking compilation is still in queue!"); 995 } 996 return false; 997 } 998 999 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 1000 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1001 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1002 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 1003 WB_END 1004 1005 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 1006 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1007 Method* clinit = ik->class_initializer(); 1008 if (clinit == NULL) { 1009 return false; 1010 } 1011 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD); 1012 WB_END 1013 1014 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 1015 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1016 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1017 1018 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1019 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 1020 bool result = directive->PrintAssemblyOption; 1021 DirectivesStack::release(directive); 1022 1023 return result; 1024 WB_END 1025 1026 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1027 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1028 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1029 1030 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1031 1032 ResourceMark rm; 1033 const char* error_msg = NULL; 1034 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1035 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 1036 1037 if (m == NULL) { 1038 assert(error_msg != NULL, "Always have an error message"); 1039 tty->print_cr("Got error: %s", error_msg); 1040 return -1; // Pattern failed 1041 } 1042 1043 // Pattern works - now check if it matches 1044 int result; 1045 if (m->match(mh, InlineMatcher::force_inline)) { 1046 result = 2; // Force inline match 1047 } else if (m->match(mh, InlineMatcher::dont_inline)) { 1048 result = 1; // Dont inline match 1049 } else { 1050 result = 0; // No match 1051 } 1052 delete m; 1053 return result; 1054 WB_END 1055 1056 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 1057 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1058 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 1059 1060 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1061 1062 ResourceMark rm; 1063 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 1064 1065 const char* error_msg = NULL; 1066 1067 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg); 1068 if (m == NULL) { 1069 assert(error_msg != NULL, "Must have error_msg"); 1070 tty->print_cr("Got error: %s", error_msg); 1071 return -1; 1072 } 1073 1074 // Pattern works - now check if it matches 1075 int result = m->matches(mh); 1076 delete m; 1077 assert(result == 0 || result == 1, "Result out of range"); 1078 return result; 1079 WB_END 1080 1081 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 1082 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1083 CHECK_JNI_EXCEPTION(env); 1084 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1085 MutexLockerEx mu(Compile_lock); 1086 MethodData* mdo = mh->method_data(); 1087 MethodCounters* mcs = mh->method_counters(); 1088 1089 if (mdo != NULL) { 1090 mdo->init(); 1091 ResourceMark rm; 1092 int arg_count = mdo->method()->size_of_parameters(); 1093 for (int i = 0; i < arg_count; i++) { 1094 mdo->set_arg_modified(i, 0); 1095 } 1096 MutexLockerEx mu(mdo->extra_data_lock()); 1097 mdo->clean_method_data(/*always_clean*/true); 1098 } 1099 1100 mh->clear_not_c1_compilable(); 1101 mh->clear_not_c2_compilable(); 1102 mh->clear_not_c2_osr_compilable(); 1103 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 1104 if (mcs != NULL) { 1105 mcs->backedge_counter()->init(); 1106 mcs->invocation_counter()->init(); 1107 mcs->set_interpreter_invocation_count(0); 1108 mcs->set_interpreter_throwout_count(0); 1109 1110 #ifdef TIERED 1111 mcs->set_rate(0.0F); 1112 mh->set_prev_event_count(0); 1113 mh->set_prev_time(0); 1114 #endif 1115 } 1116 WB_END 1117 1118 template <typename T> 1119 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const char*, T*, bool, bool)) { 1120 if (name == NULL) { 1121 return false; 1122 } 1123 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1124 const char* flag_name = env->GetStringUTFChars(name, NULL); 1125 CHECK_JNI_EXCEPTION_(env, false); 1126 JVMFlag::Error result = (*TAt)(flag_name, value, true, true); 1127 env->ReleaseStringUTFChars(name, flag_name); 1128 return (result == JVMFlag::SUCCESS); 1129 } 1130 1131 template <typename T> 1132 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(const char*, T*, JVMFlag::Flags)) { 1133 if (name == NULL) { 1134 return false; 1135 } 1136 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1137 const char* flag_name = env->GetStringUTFChars(name, NULL); 1138 CHECK_JNI_EXCEPTION_(env, false); 1139 JVMFlag::Error result = (*TAtPut)(flag_name, value, JVMFlag::INTERNAL); 1140 env->ReleaseStringUTFChars(name, flag_name); 1141 return (result == JVMFlag::SUCCESS); 1142 } 1143 1144 template <typename T> 1145 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 1146 ResourceMark rm(thread); 1147 jclass clazz = env->FindClass(name->as_C_string()); 1148 CHECK_JNI_EXCEPTION_(env, NULL); 1149 jmethodID methodID = env->GetStaticMethodID(clazz, 1150 vmSymbols::valueOf_name()->as_C_string(), 1151 sig->as_C_string()); 1152 CHECK_JNI_EXCEPTION_(env, NULL); 1153 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 1154 CHECK_JNI_EXCEPTION_(env, NULL); 1155 return result; 1156 } 1157 1158 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 1159 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 1160 } 1161 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 1162 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 1163 } 1164 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 1165 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 1166 } 1167 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 1168 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 1169 }*/ 1170 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 1171 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 1172 } 1173 1174 static JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 1175 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1176 const char* flag_name = env->GetStringUTFChars(name, NULL); 1177 CHECK_JNI_EXCEPTION_(env, NULL); 1178 JVMFlag* result = JVMFlag::find_flag(flag_name, strlen(flag_name), true, true); 1179 env->ReleaseStringUTFChars(name, flag_name); 1180 return result; 1181 } 1182 1183 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 1184 JVMFlag* flag = getVMFlag(thread, env, name); 1185 return (flag != NULL) && flag->is_constant_in_binary(); 1186 WB_END 1187 1188 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 1189 JVMFlag* flag = getVMFlag(thread, env, name); 1190 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 1191 WB_END 1192 1193 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 1194 bool result; 1195 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) { 1196 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1197 return booleanBox(thread, env, result); 1198 } 1199 return NULL; 1200 WB_END 1201 1202 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 1203 int result; 1204 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) { 1205 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1206 return longBox(thread, env, result); 1207 } 1208 return NULL; 1209 WB_END 1210 1211 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 1212 uint result; 1213 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) { 1214 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1215 return longBox(thread, env, result); 1216 } 1217 return NULL; 1218 WB_END 1219 1220 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 1221 intx result; 1222 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) { 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_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1230 uintx result; 1231 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) { 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_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1239 uint64_t result; 1240 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) { 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_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1248 size_t result; 1249 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) { 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_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1257 double result; 1258 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) { 1259 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1260 return doubleBox(thread, env, result); 1261 } 1262 return NULL; 1263 WB_END 1264 1265 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1266 ccstr ccstrResult; 1267 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) { 1268 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1269 jstring result = env->NewStringUTF(ccstrResult); 1270 CHECK_JNI_EXCEPTION_(env, NULL); 1271 return result; 1272 } 1273 return NULL; 1274 WB_END 1275 1276 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1277 bool result = value == JNI_TRUE ? true : false; 1278 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut); 1279 WB_END 1280 1281 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1282 int result = value; 1283 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut); 1284 WB_END 1285 1286 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1287 uint result = value; 1288 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut); 1289 WB_END 1290 1291 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1292 intx result = value; 1293 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut); 1294 WB_END 1295 1296 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1297 uintx result = value; 1298 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut); 1299 WB_END 1300 1301 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1302 uint64_t result = value; 1303 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut); 1304 WB_END 1305 1306 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1307 size_t result = value; 1308 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut); 1309 WB_END 1310 1311 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1312 double result = value; 1313 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut); 1314 WB_END 1315 1316 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1317 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1318 const char* ccstrValue; 1319 if (value == NULL) { 1320 ccstrValue = NULL; 1321 } 1322 else { 1323 ccstrValue = env->GetStringUTFChars(value, NULL); 1324 CHECK_JNI_EXCEPTION(env); 1325 } 1326 ccstr ccstrResult = ccstrValue; 1327 bool needFree; 1328 { 1329 ThreadInVMfromNative ttvfn(thread); // back to VM 1330 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut); 1331 } 1332 if (value != NULL) { 1333 env->ReleaseStringUTFChars(value, ccstrValue); 1334 } 1335 if (needFree) { 1336 FREE_C_HEAP_ARRAY(char, ccstrResult); 1337 } 1338 WB_END 1339 1340 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1341 WhiteBox::compilation_locked = true; 1342 WB_END 1343 1344 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1345 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1346 WhiteBox::compilation_locked = false; 1347 mo.notify_all(); 1348 WB_END 1349 1350 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 1351 // Force a code cache sweep and block until it finished 1352 NMethodSweeper::force_sweep(); 1353 WB_END 1354 1355 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1356 ResourceMark rm(THREAD); 1357 int len; 1358 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1359 return (StringTable::lookup(name, len) != NULL); 1360 WB_END 1361 1362 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1363 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true); 1364 Universe::heap()->collect(GCCause::_wb_full_gc); 1365 #if INCLUDE_G1GC 1366 if (UseG1GC) { 1367 // Needs to be cleared explicitly for G1 1368 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false); 1369 } 1370 #endif // INCLUDE_G1GC 1371 WB_END 1372 1373 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1374 Universe::heap()->collect(GCCause::_wb_young_gc); 1375 WB_END 1376 1377 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1378 // static+volatile in order to force the read to happen 1379 // (not be eliminated by the compiler) 1380 static char c; 1381 static volatile char* p; 1382 1383 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 1384 if (p == NULL) { 1385 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1386 } 1387 1388 c = *p; 1389 WB_END 1390 1391 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1392 const char* features = VM_Version::features_string(); 1393 ThreadToNativeFromVM ttn(thread); 1394 jstring features_string = env->NewStringUTF(features); 1395 1396 CHECK_JNI_EXCEPTION_(env, NULL); 1397 1398 return features_string; 1399 WB_END 1400 1401 int WhiteBox::get_blob_type(const CodeBlob* code) { 1402 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1403 if (code->is_aot()) { 1404 return -1; 1405 } 1406 return CodeCache::get_code_heap(code)->code_blob_type(); 1407 } 1408 1409 CodeHeap* WhiteBox::get_code_heap(int blob_type) { 1410 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1411 return CodeCache::get_code_heap(blob_type); 1412 } 1413 1414 struct CodeBlobStub { 1415 CodeBlobStub(const CodeBlob* blob) : 1416 name(os::strdup(blob->name())), 1417 size(blob->size()), 1418 blob_type(WhiteBox::get_blob_type(blob)), 1419 address((jlong) blob) { } 1420 ~CodeBlobStub() { os::free((void*) name); } 1421 const char* const name; 1422 const jint size; 1423 const jint blob_type; 1424 const jlong address; 1425 }; 1426 1427 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1428 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1429 CHECK_JNI_EXCEPTION_(env, NULL); 1430 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1431 1432 jstring name = env->NewStringUTF(cb->name); 1433 CHECK_JNI_EXCEPTION_(env, NULL); 1434 env->SetObjectArrayElement(result, 0, name); 1435 1436 jobject obj = integerBox(thread, env, cb->size); 1437 CHECK_JNI_EXCEPTION_(env, NULL); 1438 env->SetObjectArrayElement(result, 1, obj); 1439 1440 obj = integerBox(thread, env, cb->blob_type); 1441 CHECK_JNI_EXCEPTION_(env, NULL); 1442 env->SetObjectArrayElement(result, 2, obj); 1443 1444 obj = longBox(thread, env, cb->address); 1445 CHECK_JNI_EXCEPTION_(env, NULL); 1446 env->SetObjectArrayElement(result, 3, obj); 1447 1448 return result; 1449 } 1450 1451 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1452 ResourceMark rm(THREAD); 1453 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1454 CHECK_JNI_EXCEPTION_(env, NULL); 1455 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1456 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1457 jobjectArray result = NULL; 1458 if (code == NULL) { 1459 return result; 1460 } 1461 int comp_level = code->comp_level(); 1462 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size(); 1463 1464 ThreadToNativeFromVM ttn(thread); 1465 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1466 CHECK_JNI_EXCEPTION_(env, NULL); 1467 result = env->NewObjectArray(5, clazz, NULL); 1468 if (result == NULL) { 1469 return result; 1470 } 1471 1472 CodeBlobStub stub(code); 1473 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1474 CHECK_JNI_EXCEPTION_(env, NULL); 1475 env->SetObjectArrayElement(result, 0, codeBlob); 1476 1477 jobject level = integerBox(thread, env, comp_level); 1478 CHECK_JNI_EXCEPTION_(env, NULL); 1479 env->SetObjectArrayElement(result, 1, level); 1480 1481 jbyteArray insts = env->NewByteArray(insts_size); 1482 CHECK_JNI_EXCEPTION_(env, NULL); 1483 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1484 env->SetObjectArrayElement(result, 2, insts); 1485 1486 jobject id = integerBox(thread, env, code->compile_id()); 1487 CHECK_JNI_EXCEPTION_(env, NULL); 1488 env->SetObjectArrayElement(result, 3, id); 1489 1490 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1491 CHECK_JNI_EXCEPTION_(env, NULL); 1492 env->SetObjectArrayElement(result, 4, entry_point); 1493 1494 return result; 1495 WB_END 1496 1497 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1498 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1499 BufferBlob* blob; 1500 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1501 if (full_size < size) { 1502 full_size += align_up(size - full_size, oopSize); 1503 } 1504 { 1505 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1506 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1507 if (blob != NULL) { 1508 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1509 } 1510 } 1511 // Track memory usage statistic after releasing CodeCache_lock 1512 MemoryService::track_code_cache_memory_usage(); 1513 return blob; 1514 } 1515 1516 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1517 if (size < 0) { 1518 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1519 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1520 } 1521 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1522 WB_END 1523 1524 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1525 if (addr == 0) { 1526 return; 1527 } 1528 BufferBlob::free((BufferBlob*) addr); 1529 WB_END 1530 1531 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1532 ResourceMark rm; 1533 GrowableArray<CodeBlobStub*> blobs; 1534 { 1535 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1536 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1537 if (heap == NULL) { 1538 return NULL; 1539 } 1540 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1541 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1542 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1543 new (stub) CodeBlobStub(cb); 1544 blobs.append(stub); 1545 } 1546 } 1547 ThreadToNativeFromVM ttn(thread); 1548 jobjectArray result = NULL; 1549 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1550 CHECK_JNI_EXCEPTION_(env, NULL); 1551 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1552 CHECK_JNI_EXCEPTION_(env, NULL); 1553 if (result == NULL) { 1554 return result; 1555 } 1556 int i = 0; 1557 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1558 it != blobs.end(); ++it) { 1559 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1560 CHECK_JNI_EXCEPTION_(env, NULL); 1561 env->SetObjectArrayElement(result, i, obj); 1562 CHECK_JNI_EXCEPTION_(env, NULL); 1563 ++i; 1564 } 1565 return result; 1566 WB_END 1567 1568 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1569 return CompileBroker::get_compilation_activity_mode(); 1570 WB_END 1571 1572 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1573 if (addr == 0) { 1574 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1575 "WB_GetCodeBlob: addr is null"); 1576 } 1577 ThreadToNativeFromVM ttn(thread); 1578 CodeBlobStub stub((CodeBlob*) addr); 1579 return codeBlob2objectArray(thread, env, &stub); 1580 WB_END 1581 1582 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1583 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1584 CHECK_JNI_EXCEPTION_(env, 0); 1585 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1586 return (jlong) mh->method_data(); 1587 WB_END 1588 1589 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1590 return (jlong) Thread::current()->stack_size(); 1591 WB_END 1592 1593 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1594 JavaThread* t = JavaThread::current(); 1595 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size(); 1596 WB_END 1597 1598 1599 int WhiteBox::array_bytes_to_length(size_t bytes) { 1600 return Array<u1>::bytes_to_length(bytes); 1601 } 1602 1603 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1604 if (size < 0) { 1605 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1606 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1607 } 1608 1609 oop class_loader_oop = JNIHandles::resolve(class_loader); 1610 ClassLoaderData* cld = class_loader_oop != NULL 1611 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1612 : ClassLoaderData::the_null_class_loader_data(); 1613 1614 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1615 1616 return (jlong)(uintptr_t)metadata; 1617 WB_END 1618 1619 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 1620 oop class_loader_oop = JNIHandles::resolve(class_loader); 1621 ClassLoaderData* cld = class_loader_oop != NULL 1622 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop) 1623 : ClassLoaderData::the_null_class_loader_data(); 1624 1625 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 1626 WB_END 1627 1628 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open, 1629 jstring version, jstring location, jobjectArray packages)) 1630 ResourceMark rm(THREAD); 1631 1632 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages)); 1633 objArrayHandle packages_h(THREAD, packages_oop); 1634 int num_packages = (packages_h == NULL ? 0 : packages_h->length()); 1635 1636 char** pkgs = NULL; 1637 if (num_packages > 0) { 1638 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages); 1639 for (int x = 0; x < num_packages; x++) { 1640 oop pkg_str = packages_h->obj_at(x); 1641 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) { 1642 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 1643 err_msg("Bad package name")); 1644 } 1645 pkgs[x] = java_lang_String::as_utf8_string(pkg_str); 1646 } 1647 } 1648 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK); 1649 WB_END 1650 1651 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1652 ResourceMark rm(THREAD); 1653 char* package_name = NULL; 1654 if (package != NULL) { 1655 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1656 } 1657 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK); 1658 WB_END 1659 1660 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1661 ResourceMark rm(THREAD); 1662 char* package_name = NULL; 1663 if (package != NULL) { 1664 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1665 } 1666 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK); 1667 WB_END 1668 1669 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1670 ResourceMark rm(THREAD); 1671 char* package_name = NULL; 1672 if (package != NULL) { 1673 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1674 } 1675 Modules::add_module_exports(module, package_name, NULL, CHECK); 1676 WB_END 1677 1678 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1679 Modules::add_reads_module(from_module, source_module, CHECK); 1680 WB_END 1681 1682 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1683 if (inc < 0) { 1684 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1685 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1686 } 1687 1688 jlong max_size_t = (jlong) ((size_t) -1); 1689 if (inc > max_size_t) { 1690 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1691 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1692 } 1693 1694 size_t new_cap_until_GC = 0; 1695 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment()); 1696 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1697 if (!success) { 1698 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1699 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1700 "due to contention with another thread"); 1701 } 1702 return (jlong) new_cap_until_GC; 1703 WB_END 1704 1705 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1706 return (jlong) MetaspaceGC::capacity_until_GC(); 1707 WB_END 1708 1709 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb)) 1710 return MetaspaceGC::should_concurrent_collect(); 1711 WB_END 1712 1713 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb)) 1714 return (jlong)Metaspace::reserve_alignment(); 1715 WB_END 1716 1717 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue)) 1718 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ? 1719 Monitor::_safepoint_check_always : 1720 Monitor::_safepoint_check_never; 1721 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required), 1722 attemptedNoSafepointValue == JNI_TRUE); 1723 WB_END 1724 1725 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1726 oop obj_oop = JNIHandles::resolve(obj); 1727 return (jboolean) obj_oop->mark()->has_monitor(); 1728 WB_END 1729 1730 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1731 VM_ForceSafepoint force_safepoint_op; 1732 VMThread::execute(&force_safepoint_op); 1733 WB_END 1734 1735 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1736 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1737 return (jlong) ik->constants(); 1738 WB_END 1739 1740 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1741 return ConstantPool::CPCACHE_INDEX_TAG; 1742 WB_END 1743 1744 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1745 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1746 ConstantPool* cp = ik->constants(); 1747 if (cp->cache() == NULL) { 1748 return -1; 1749 } 1750 return cp->cache()->length(); 1751 WB_END 1752 1753 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1754 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1755 ConstantPool* cp = ik->constants(); 1756 if (cp->cache() == NULL) { 1757 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1758 } 1759 jint cpci = index; 1760 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1761 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1762 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1763 } 1764 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1765 return cpi; 1766 WB_END 1767 1768 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1769 return ConstantPool::encode_invokedynamic_index(index); 1770 WB_END 1771 1772 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1773 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1774 VMThread::execute(&clear_ics); 1775 WB_END 1776 1777 template <typename T> 1778 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1779 assert(value != NULL, "sanity"); 1780 if (method == NULL || name == NULL) { 1781 return false; 1782 } 1783 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1784 CHECK_JNI_EXCEPTION_(env, false); 1785 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1786 // can't be in VM when we call JNI 1787 ThreadToNativeFromVM ttnfv(thread); 1788 const char* flag_name = env->GetStringUTFChars(name, NULL); 1789 CHECK_JNI_EXCEPTION_(env, false); 1790 bool result = CompilerOracle::has_option_value(mh, flag_name, *value); 1791 env->ReleaseStringUTFChars(name, flag_name); 1792 return result; 1793 } 1794 1795 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1796 bool result; 1797 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1798 // can't be in VM when we call JNI 1799 ThreadToNativeFromVM ttnfv(thread); 1800 return booleanBox(thread, env, result); 1801 } 1802 return NULL; 1803 WB_END 1804 1805 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1806 intx result; 1807 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1808 // can't be in VM when we call JNI 1809 ThreadToNativeFromVM ttnfv(thread); 1810 return longBox(thread, env, result); 1811 } 1812 return NULL; 1813 WB_END 1814 1815 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1816 uintx result; 1817 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1818 // can't be in VM when we call JNI 1819 ThreadToNativeFromVM ttnfv(thread); 1820 return longBox(thread, env, result); 1821 } 1822 return NULL; 1823 WB_END 1824 1825 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1826 double result; 1827 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1828 // can't be in VM when we call JNI 1829 ThreadToNativeFromVM ttnfv(thread); 1830 return doubleBox(thread, env, result); 1831 } 1832 return NULL; 1833 WB_END 1834 1835 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1836 ccstr ccstrResult; 1837 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 1838 // can't be in VM when we call JNI 1839 ThreadToNativeFromVM ttnfv(thread); 1840 jstring result = env->NewStringUTF(ccstrResult); 1841 CHECK_JNI_EXCEPTION_(env, NULL); 1842 return result; 1843 } 1844 return NULL; 1845 WB_END 1846 1847 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb)) 1848 const char* p = Arguments::get_default_shared_archive_path(); 1849 ThreadToNativeFromVM ttn(thread); 1850 jstring path_string = env->NewStringUTF(p); 1851 1852 CHECK_JNI_EXCEPTION_(env, NULL); 1853 1854 return path_string; 1855 WB_END 1856 1857 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb)) 1858 return UseSharedSpaces; 1859 WB_END 1860 1861 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 1862 oop obj_oop = JNIHandles::resolve(obj); 1863 return HeapShared::is_archived_object(obj_oop); 1864 WB_END 1865 1866 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 1867 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1868 WB_END 1869 1870 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env)) 1871 return !HeapShared::closed_archive_heap_region_mapped(); 1872 WB_END 1873 1874 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz)) 1875 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)); 1876 if (k->is_instance_klass()) { 1877 InstanceKlass *ik = InstanceKlass::cast(k); 1878 ConstantPool *cp = ik->constants(); 1879 objArrayOop refs = cp->resolved_references(); 1880 return (jobject)JNIHandles::make_local(env, refs); 1881 } else { 1882 return NULL; 1883 } 1884 WB_END 1885 1886 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env)) 1887 return HeapShared::open_archive_heap_region_mapped(); 1888 WB_END 1889 1890 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env)) 1891 #if INCLUDE_CDS 1892 # ifdef _LP64 1893 if (!UseCompressedOops || !UseCompressedClassPointers) { 1894 // On 64-bit VMs, CDS is supported only with compressed oops/pointers 1895 return false; 1896 } 1897 # endif // _LP64 1898 return true; 1899 #else 1900 return false; 1901 #endif // INCLUDE_CDS 1902 WB_END 1903 1904 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env)) 1905 return HeapShared::is_heap_object_archiving_allowed(); 1906 WB_END 1907 1908 1909 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env)) 1910 #if INCLUDE_JFR 1911 return true; 1912 #else 1913 return false; 1914 #endif // INCLUDE_JFR 1915 WB_END 1916 1917 #if INCLUDE_CDS 1918 1919 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name)) 1920 ResourceMark rm; 1921 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); 1922 int result = CDSOffsets::find_offset(c_name); 1923 return (jint)result; 1924 WB_END 1925 1926 #endif // INCLUDE_CDS 1927 1928 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads)) 1929 class TraceSelfClosure : public ThreadClosure { 1930 jint _num_threads_completed; 1931 1932 void do_thread(Thread* th) { 1933 assert(th->is_Java_thread(), "sanity"); 1934 JavaThread* jt = (JavaThread*)th; 1935 ResourceMark rm; 1936 1937 jt->print_on(tty); 1938 jt->print_stack_on(tty); 1939 tty->cr(); 1940 Atomic::inc(&_num_threads_completed); 1941 } 1942 1943 public: 1944 TraceSelfClosure() : _num_threads_completed(0) {} 1945 1946 jint num_threads_completed() const { return _num_threads_completed; } 1947 }; 1948 TraceSelfClosure tsc; 1949 1950 if (all_threads) { 1951 Handshake::execute(&tsc); 1952 } else { 1953 oop thread_oop = JNIHandles::resolve(thread_handle); 1954 if (thread_oop != NULL) { 1955 JavaThread* target = java_lang_Thread::thread(thread_oop); 1956 Handshake::execute(&tsc, target); 1957 } 1958 } 1959 return tsc.num_threads_completed(); 1960 WB_END 1961 1962 //Some convenience methods to deal with objects from java 1963 int WhiteBox::offset_for_field(const char* field_name, oop object, 1964 Symbol* signature_symbol) { 1965 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 1966 Thread* THREAD = Thread::current(); 1967 1968 //Get the class of our object 1969 Klass* arg_klass = object->klass(); 1970 //Turn it into an instance-klass 1971 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 1972 1973 //Create symbols to look for in the class 1974 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), 1975 THREAD); 1976 1977 //To be filled in with an offset of the field we're looking for 1978 fieldDescriptor fd; 1979 1980 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 1981 if (res == NULL) { 1982 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 1983 name_symbol->as_C_string()); 1984 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 1985 } 1986 1987 //fetch the field at the offset we've found 1988 int dest_offset = fd.offset(); 1989 1990 return dest_offset; 1991 } 1992 1993 1994 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 1995 int offset = offset_for_field(field_name, object, 1996 vmSymbols::string_signature()); 1997 oop string = object->obj_field(offset); 1998 if (string == NULL) { 1999 return NULL; 2000 } 2001 const char* ret = java_lang_String::as_utf8_string(string); 2002 return ret; 2003 } 2004 2005 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 2006 int offset = 2007 offset_for_field(field_name, object, vmSymbols::bool_signature()); 2008 bool ret = (object->bool_field(offset) == JNI_TRUE); 2009 return ret; 2010 } 2011 2012 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 2013 ResourceMark rm; 2014 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 2015 2016 // one by one registration natives for exception catching 2017 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 2018 CHECK_JNI_EXCEPTION(env); 2019 for (int i = 0, n = method_count; i < n; ++i) { 2020 // Skip dummy entries 2021 if (method_array[i].fnPtr == NULL) continue; 2022 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 2023 jthrowable throwable_obj = env->ExceptionOccurred(); 2024 if (throwable_obj != NULL) { 2025 env->ExceptionClear(); 2026 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 2027 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 2028 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 2029 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 2030 method_array[i].name, method_array[i].signature); 2031 } 2032 } else { 2033 // Registration failed unexpectedly. 2034 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 2035 method_array[i].name, method_array[i].signature); 2036 env->UnregisterNatives(wbclass); 2037 break; 2038 } 2039 } 2040 } 2041 } 2042 2043 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 2044 // can't be in VM when we call JNI 2045 ThreadToNativeFromVM ttnfv(thread); 2046 const char* dir = env->GetStringUTFChars(compDirect, NULL); 2047 CHECK_JNI_EXCEPTION_(env, 0); 2048 int ret; 2049 { 2050 ThreadInVMfromNative ttvfn(thread); // back to VM 2051 ret = DirectivesParser::parse_string(dir, tty); 2052 } 2053 env->ReleaseStringUTFChars(compDirect, dir); 2054 // -1 for error parsing directive. Return 0 as number of directives added. 2055 if (ret == -1) { 2056 ret = 0; 2057 } 2058 return (jint) ret; 2059 WB_END 2060 2061 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 2062 DirectivesStack::pop(count); 2063 WB_END 2064 2065 // Checks that the library libfile has the noexecstack bit set. 2066 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile)) 2067 jboolean ret = false; 2068 #ifdef LINUX 2069 // Can't be in VM when we call JNI. 2070 ThreadToNativeFromVM ttnfv(thread); 2071 const char* lf = env->GetStringUTFChars(libfile, NULL); 2072 CHECK_JNI_EXCEPTION_(env, 0); 2073 ret = (jboolean) ElfFile::specifies_noexecstack(lf); 2074 env->ReleaseStringUTFChars(libfile, lf); 2075 #endif 2076 return ret; 2077 WB_END 2078 2079 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o)) 2080 LINUX_ONLY(return OSContainer::is_containerized();) 2081 return false; 2082 WB_END 2083 2084 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o)) 2085 os::print_os_info(tty); 2086 WB_END 2087 2088 // Elf decoder 2089 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env)) 2090 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX) 2091 ElfFile::_do_not_cache_elf_section = true; 2092 #endif 2093 WB_END 2094 2095 WB_ENTRY(jint, WB_ResolvedMethodRemovedCount(JNIEnv* env, jobject o)) 2096 return (jint) ResolvedMethodTable::removed_entries_count(); 2097 WB_END 2098 2099 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o)) 2100 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count(); 2101 WB_END 2102 2103 WB_ENTRY(jint, WB_AotLibrariesCount(JNIEnv* env, jobject o)) 2104 jint result = 0; 2105 #if INCLUDE_AOT 2106 result = (jint) AOTLoader::heaps_count(); 2107 #endif 2108 return result; 2109 WB_END 2110 2111 #define CC (char*) 2112 2113 static JNINativeMethod methods[] = { 2114 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 2115 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 2116 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 2117 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 2118 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 2119 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 2120 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 2121 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 2122 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 2123 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, 2124 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount }, 2125 {CC"parseCommandLine0", 2126 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 2127 (void*) &WB_ParseCommandLine 2128 }, 2129 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2130 (void*)&WB_AddToBootstrapClassLoaderSearch}, 2131 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 2132 (void*)&WB_AddToSystemClassLoaderSearch}, 2133 {CC"getCompressedOopsMaxHeapSize", CC"()J", 2134 (void*)&WB_GetCompressedOopsMaxHeapSize}, 2135 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 2136 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 2137 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 2138 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 2139 #if INCLUDE_CDS 2140 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName}, 2141 #endif 2142 #if INCLUDE_G1GC 2143 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 2144 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 2145 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 2146 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 2147 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 2148 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 2149 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 2150 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 2151 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 2152 (void*)&WB_G1AuxiliaryMemoryUsage }, 2153 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 2154 #endif // INCLUDE_G1GC 2155 #if INCLUDE_G1GC || INCLUDE_PARALLELGC 2156 {CC"dramReservedStart", CC"()J", (void*)&WB_DramReservedStart }, 2157 {CC"dramReservedEnd", CC"()J", (void*)&WB_DramReservedEnd }, 2158 {CC"nvdimmReservedStart", CC"()J", (void*)&WB_NvdimmReservedStart }, 2159 {CC"nvdimmReservedEnd", CC"()J", (void*)&WB_NvdimmReservedEnd }, 2160 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC 2161 #if INCLUDE_PARALLELGC 2162 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 2163 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 2164 #endif 2165 #if INCLUDE_NMT 2166 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 2167 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 2168 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType}, 2169 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 2170 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 2171 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt }, 2172 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 2173 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 2174 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 2175 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 2176 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 2177 #endif // INCLUDE_NMT 2178 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 2179 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 2180 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 2181 (void*)&WB_DeoptimizeMethod }, 2182 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 2183 (void*)&WB_IsMethodCompiled }, 2184 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 2185 (void*)&WB_IsMethodCompilable}, 2186 {CC"isMethodQueuedForCompilation0", 2187 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 2188 {CC"isIntrinsicAvailable0", 2189 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 2190 (void*)&WB_IsIntrinsicAvailable}, 2191 {CC"makeMethodNotCompilable0", 2192 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 2193 {CC"testSetDontInlineMethod0", 2194 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 2195 {CC"getMethodCompilationLevel0", 2196 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 2197 {CC"getMethodEntryBci0", 2198 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 2199 {CC"getCompileQueueSize", 2200 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 2201 {CC"testSetForceInlineMethod0", 2202 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 2203 {CC"enqueueMethodForCompilation0", 2204 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 2205 {CC"enqueueInitializerForCompilation0", 2206 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 2207 {CC"clearMethodState0", 2208 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 2209 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 2210 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 2211 {CC"matchesMethod", 2212 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2213 (void*)&WB_MatchesMethod}, 2214 {CC"matchesInline", 2215 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 2216 (void*)&WB_MatchesInline}, 2217 {CC"shouldPrintAssembly", 2218 CC"(Ljava/lang/reflect/Executable;I)Z", 2219 (void*)&WB_ShouldPrintAssembly}, 2220 2221 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 2222 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 2223 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 2224 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 2225 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 2226 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 2227 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 2228 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 2229 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 2230 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 2231 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 2232 (void*)&WB_SetStringVMFlag}, 2233 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 2234 (void*)&WB_GetBooleanVMFlag}, 2235 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2236 (void*)&WB_GetIntVMFlag}, 2237 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2238 (void*)&WB_GetUintVMFlag}, 2239 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2240 (void*)&WB_GetIntxVMFlag}, 2241 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2242 (void*)&WB_GetUintxVMFlag}, 2243 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2244 (void*)&WB_GetUint64VMFlag}, 2245 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 2246 (void*)&WB_GetSizeTVMFlag}, 2247 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 2248 (void*)&WB_GetDoubleVMFlag}, 2249 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 2250 (void*)&WB_GetStringVMFlag}, 2251 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 2252 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 2253 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 2254 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 2255 {CC"allocateMetaspace", 2256 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 2257 {CC"freeMetaspace", 2258 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 2259 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 2260 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 2261 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect }, 2262 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment }, 2263 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 2264 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 2265 (void*)&WB_GetNMethod }, 2266 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 2267 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 2268 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 2269 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 2270 {CC"getCompilationActivityMode", 2271 CC"()I", (void*)&WB_GetCompilationActivityMode}, 2272 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 2273 (void*)&WB_GetMethodData }, 2274 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 2275 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 2276 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 2277 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 2278 (void*)&WB_DefineModule }, 2279 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 2280 (void*)&WB_AddModuleExports }, 2281 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 2282 (void*)&WB_AddReadsModule }, 2283 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2284 (void*)&WB_AddModuleExportsToAllUnnamed }, 2285 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 2286 (void*)&WB_AddModuleExportsToAll }, 2287 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls }, 2288 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 2289 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 2290 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 2291 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 2292 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 2293 {CC"remapInstructionOperandFromCPCache0", 2294 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 2295 {CC"encodeConstantPoolIndyIndex0", 2296 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 2297 {CC"getMethodBooleanOption", 2298 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 2299 (void*)&WB_GetMethodBooleaneOption}, 2300 {CC"getMethodIntxOption", 2301 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2302 (void*)&WB_GetMethodIntxOption}, 2303 {CC"getMethodUintxOption", 2304 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 2305 (void*)&WB_GetMethodUintxOption}, 2306 {CC"getMethodDoubleOption", 2307 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 2308 (void*)&WB_GetMethodDoubleOption}, 2309 {CC"getMethodStringOption", 2310 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 2311 (void*)&WB_GetMethodStringOption}, 2312 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;", 2313 (void*)&WB_GetDefaultArchivePath}, 2314 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled}, 2315 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 2316 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 2317 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored }, 2318 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences}, 2319 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped}, 2320 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild }, 2321 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild }, 2322 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported }, 2323 2324 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 2325 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack }, 2326 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 2327 (void*)&WB_AddCompilerDirective }, 2328 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 2329 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported}, 2330 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected}, 2331 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically}, 2332 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl}, 2333 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z", 2334 (void*)&WB_RequestConcurrentGCPhase}, 2335 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z", 2336 (void*)&WB_CheckLibSpecifiesNoexecstack}, 2337 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized }, 2338 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo }, 2339 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache }, 2340 {CC"resolvedMethodRemovedCount", CC"()I", (void*)&WB_ResolvedMethodRemovedCount }, 2341 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount }, 2342 {CC"aotLibrariesCount", CC"()I", (void*)&WB_AotLibrariesCount }, 2343 }; 2344 2345 2346 #undef CC 2347 2348 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 2349 { 2350 if (WhiteBoxAPI) { 2351 // Make sure that wbclass is loaded by the null classloader 2352 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass()); 2353 Handle loader(THREAD, ik->class_loader()); 2354 if (loader.is_null()) { 2355 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 2356 WhiteBox::set_used(); 2357 } 2358 } 2359 } 2360 JVM_END