whitebox.cpp revision 12290:8953c0318163
1/* 2 * Copyright (c) 2012, 2016, 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/classLoaderData.hpp" 30#include "classfile/modules.hpp" 31#include "classfile/stringTable.hpp" 32#include "code/codeCache.hpp" 33#include "compiler/methodMatcher.hpp" 34#include "compiler/directivesParser.hpp" 35#include "jvmtifiles/jvmtiEnv.hpp" 36#include "memory/metadataFactory.hpp" 37#include "memory/metaspaceShared.hpp" 38#include "memory/iterator.hpp" 39#include "memory/resourceArea.hpp" 40#include "memory/universe.hpp" 41#include "memory/oopFactory.hpp" 42#include "oops/constantPool.hpp" 43#include "oops/oop.inline.hpp" 44#include "prims/wbtestmethods/parserTests.hpp" 45#include "prims/whitebox.hpp" 46#include "runtime/arguments.hpp" 47#include "runtime/compilationPolicy.hpp" 48#include "runtime/deoptimization.hpp" 49#include "runtime/interfaceSupport.hpp" 50#include "runtime/javaCalls.hpp" 51#include "runtime/os.hpp" 52#include "runtime/sweeper.hpp" 53#include "runtime/thread.hpp" 54#include "runtime/vm_version.hpp" 55#include "utilities/array.hpp" 56#include "utilities/debug.hpp" 57#include "utilities/exceptions.hpp" 58#include "utilities/macros.hpp" 59#if INCLUDE_ALL_GCS 60#include "gc/g1/concurrentMarkThread.hpp" 61#include "gc/g1/g1CollectedHeap.inline.hpp" 62#include "gc/g1/g1ConcurrentMark.hpp" 63#include "gc/g1/heapRegionRemSet.hpp" 64#include "gc/parallel/parallelScavengeHeap.inline.hpp" 65#include "gc/parallel/adjoiningGenerations.hpp" 66#endif // INCLUDE_ALL_GCS 67#if INCLUDE_NMT 68#include "services/mallocSiteTable.hpp" 69#include "services/memTracker.hpp" 70#include "utilities/nativeCallStack.hpp" 71#endif // INCLUDE_NMT 72 73 74#define SIZE_T_MAX_VALUE ((size_t) -1) 75 76bool WhiteBox::_used = false; 77volatile bool WhiteBox::compilation_locked = false; 78 79class VM_WhiteBoxOperation : public VM_Operation { 80 public: 81 VM_WhiteBoxOperation() { } 82 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 83 bool allow_nested_vm_operations() const { return true; } 84}; 85 86 87WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 88 return (jlong)(void*)JNIHandles::resolve(obj); 89WB_END 90 91WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 92 return heapOopSize; 93WB_END 94 95WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 96 return os::vm_page_size(); 97WB_END 98 99WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 100 return os::vm_allocation_granularity(); 101WB_END 102 103WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 104 return os::large_page_size(); 105WB_END 106 107class WBIsKlassAliveClosure : public KlassClosure { 108 Symbol* _name; 109 bool _found; 110public: 111 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} 112 113 void do_klass(Klass* k) { 114 if (_found) return; 115 Symbol* ksym = k->name(); 116 if (ksym->fast_compare(_name) == 0) { 117 _found = true; 118 } 119 } 120 121 bool found() const { 122 return _found; 123 } 124}; 125 126WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) 127 Handle h_name = JNIHandles::resolve(name); 128 if (h_name.is_null()) return false; 129 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false); 130 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 131 132 WBIsKlassAliveClosure closure(sym); 133 ClassLoaderDataGraph::classes_do(&closure); 134 135 return closure.found(); 136WB_END 137 138WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 139#if INCLUDE_JVMTI 140 ResourceMark rm; 141 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 142 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 143 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 144 assert(err == JVMTI_ERROR_NONE, "must not fail"); 145#endif 146} 147WB_END 148 149WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 150#if INCLUDE_JVMTI 151 ResourceMark rm; 152 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 153 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 154 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 155 assert(err == JVMTI_ERROR_NONE, "must not fail"); 156#endif 157} 158WB_END 159 160 161WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 162 return (jlong)Arguments::max_heap_for_compressed_oops(); 163} 164WB_END 165 166WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 167 CollectorPolicy * p = Universe::heap()->collector_policy(); 168 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " 169 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 170 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(), 171 p->space_alignment(), p->heap_alignment()); 172} 173WB_END 174 175#ifndef PRODUCT 176// Forward declaration 177void TestReservedSpace_test(); 178void TestReserveMemorySpecial_test(); 179void TestVirtualSpace_test(); 180void TestMetaspaceAux_test(); 181#endif 182 183WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) 184#ifndef PRODUCT 185 TestReservedSpace_test(); 186 TestReserveMemorySpecial_test(); 187 TestVirtualSpace_test(); 188 TestMetaspaceAux_test(); 189#endif 190WB_END 191 192WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 193 size_t granularity = os::vm_allocation_granularity(); 194 ReservedHeapSpace rhs(100 * granularity, granularity, false); 195 VirtualSpace vs; 196 vs.initialize(rhs, 50 * granularity); 197 198 // Check if constraints are complied 199 if (!( UseCompressedOops && rhs.base() != NULL && 200 Universe::narrow_oop_base() != NULL && 201 Universe::narrow_oop_use_implicit_null_checks() )) { 202 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 203 "\tUseCompressedOops is %d\n" 204 "\trhs.base() is " PTR_FORMAT "\n" 205 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n" 206 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d", 207 UseCompressedOops, 208 p2i(rhs.base()), 209 p2i(Universe::narrow_oop_base()), 210 Universe::narrow_oop_use_implicit_null_checks()); 211 return; 212 } 213 tty->print_cr("Reading from no access area... "); 214 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 215 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 216WB_END 217 218static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 219 size_t magnitude, size_t iterations) { 220 size_t granularity = os::vm_allocation_granularity(); 221 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false); 222 VirtualSpace vs; 223 if (!vs.initialize(rhs, 0)) { 224 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 225 return 3; 226 } 227 228 long seed = os::random(); 229 tty->print_cr("Random seed is %ld", seed); 230 os::init_random(seed); 231 232 for (size_t i = 0; i < iterations; i++) { 233 234 // Whether we will shrink or grow 235 bool shrink = os::random() % 2L == 0; 236 237 // Get random delta to resize virtual space 238 size_t delta = (size_t)os::random() % magnitude; 239 240 // If we are about to shrink virtual space below zero, then expand instead 241 if (shrink && vs.committed_size() < delta) { 242 shrink = false; 243 } 244 245 // Resizing by delta 246 if (shrink) { 247 vs.shrink_by(delta); 248 } else { 249 // If expanding fails expand_by will silently return false 250 vs.expand_by(delta, true); 251 } 252 } 253 return 0; 254} 255 256WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 257 jlong reserved_space_size, jlong magnitude, jlong iterations)) 258 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 259 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 260 iterations); 261 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 262 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 263 return 1; 264 } 265 266 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 267 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 268 if (sizeof(size_t) < sizeof(jlong)) { 269 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; 270 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 271 || iterations > size_t_max_value) { 272 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 273 return 2; 274 } 275 } 276 277 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 278 (size_t) magnitude, (size_t) iterations); 279WB_END 280 281static const jint serial_code = 1; 282static const jint parallel_code = 2; 283static const jint cms_code = 4; 284static const jint g1_code = 8; 285 286WB_ENTRY(jint, WB_CurrentGC(JNIEnv* env, jobject o, jobject obj)) 287 if (UseSerialGC) { 288 return serial_code; 289 } else if (UseParallelGC || UseParallelOldGC) { 290 return parallel_code; 291 } if (UseConcMarkSweepGC) { 292 return cms_code; 293 } else if (UseG1GC) { 294 return g1_code; 295 } 296 ShouldNotReachHere(); 297 return 0; 298WB_END 299 300WB_ENTRY(jint, WB_AllSupportedGC(JNIEnv* env, jobject o, jobject obj)) 301#if INCLUDE_ALL_GCS 302 return serial_code | parallel_code | cms_code | g1_code; 303#else 304 return serial_code; 305#endif // INCLUDE_ALL_GCS 306WB_END 307 308WB_ENTRY(jboolean, WB_GCSelectedByErgo(JNIEnv* env, jobject o, jobject obj)) 309 if (UseSerialGC) { 310 return FLAG_IS_ERGO(UseSerialGC); 311 } else if (UseParallelGC) { 312 return FLAG_IS_ERGO(UseParallelGC); 313 } else if (UseParallelOldGC) { 314 return FLAG_IS_ERGO(UseParallelOldGC); 315 } else if (UseConcMarkSweepGC) { 316 return FLAG_IS_ERGO(UseConcMarkSweepGC); 317 } else if (UseG1GC) { 318 return FLAG_IS_ERGO(UseG1GC); 319 } 320 ShouldNotReachHere(); 321 return false; 322WB_END 323 324WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 325 oop p = JNIHandles::resolve(obj); 326#if INCLUDE_ALL_GCS 327 if (UseG1GC) { 328 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 329 const HeapRegion* hr = g1->heap_region_containing(p); 330 if (hr == NULL) { 331 return false; 332 } 333 return !(hr->is_young()); 334 } else if (UseParallelGC) { 335 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 336 return !psh->is_in_young(p); 337 } 338#endif // INCLUDE_ALL_GCS 339 GenCollectedHeap* gch = GenCollectedHeap::heap(); 340 return !gch->is_in_young(p); 341WB_END 342 343WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 344 oop p = JNIHandles::resolve(obj); 345 return p->size() * HeapWordSize; 346WB_END 347 348WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 349 size_t alignment = Universe::heap()->collector_policy()->space_alignment(); 350 return (jlong)alignment; 351WB_END 352 353WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 354 size_t alignment = Universe::heap()->collector_policy()->heap_alignment(); 355 return (jlong)alignment; 356WB_END 357 358#if INCLUDE_ALL_GCS 359WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 360 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 361 oop result = JNIHandles::resolve(obj); 362 const HeapRegion* hr = g1->heap_region_containing(result); 363 return hr->is_humongous(); 364WB_END 365 366WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 367 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 368 const HeapRegion* hr = g1->heap_region_containing((void*) addr); 369 return hr->is_humongous(); 370WB_END 371 372WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 373 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 374 const HeapRegion* hr = g1->heap_region_containing((void*) addr); 375 return hr->is_free(); 376WB_END 377 378WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 379 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 380 size_t nr = g1->max_regions(); 381 return (jlong)nr; 382WB_END 383 384WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 385 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 386 size_t nr = g1->num_free_regions(); 387 return (jlong)nr; 388WB_END 389 390WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 391 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 392 return g1h->concurrent_mark()->cmThread()->during_cycle(); 393WB_END 394 395WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o)) 396 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 397 if (!g1h->concurrent_mark()->cmThread()->during_cycle()) { 398 g1h->collect(GCCause::_wb_conc_mark); 399 return true; 400 } 401 return false; 402WB_END 403 404WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 405 return (jint)HeapRegion::GrainBytes; 406WB_END 407 408WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 409#if INCLUDE_ALL_GCS 410 if (UseParallelGC) { 411 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment(); 412 } 413#endif // INCLUDE_ALL_GCS 414 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 415WB_END 416 417WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 418#if INCLUDE_ALL_GCS 419 if (UseParallelGC) { 420 return ParallelScavengeHeap::heap()->generation_alignment(); 421 } 422#endif // INCLUDE_ALL_GCS 423 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 424WB_END 425 426WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 427 ResourceMark rm(THREAD); 428 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 429 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 430 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 431 return JNIHandles::make_local(env, h()); 432WB_END 433 434class OldRegionsLivenessClosure: public HeapRegionClosure { 435 436 private: 437 const int _liveness; 438 size_t _total_count; 439 size_t _total_memory; 440 size_t _total_memory_to_free; 441 442 public: 443 OldRegionsLivenessClosure(int liveness) : 444 _liveness(liveness), 445 _total_count(0), 446 _total_memory(0), 447 _total_memory_to_free(0) { } 448 449 size_t total_count() { return _total_count; } 450 size_t total_memory() { return _total_memory; } 451 size_t total_memory_to_free() { return _total_memory_to_free; } 452 453 bool doHeapRegion(HeapRegion* r) { 454 if (r->is_old()) { 455 size_t prev_live = r->marked_bytes(); 456 size_t live = r->live_bytes(); 457 size_t size = r->used(); 458 size_t reg_size = HeapRegion::GrainBytes; 459 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 460 _total_memory += size; 461 ++_total_count; 462 if (size == reg_size) { 463 // we don't include non-full regions since they are unlikely included in mixed gc 464 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 465 _total_memory_to_free += size - prev_live; 466 } 467 } 468 } 469 return false; 470 } 471}; 472 473 474WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 475 if (!UseG1GC) { 476 THROW_MSG_NULL(vmSymbols::java_lang_RuntimeException(), "WB_G1GetMixedGCInfo: G1 is not enabled"); 477 } 478 if (liveness < 0) { 479 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 480 } 481 482 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 483 OldRegionsLivenessClosure rli(liveness); 484 g1h->heap_region_iterate(&rli); 485 486 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 487 result->long_at_put(0, rli.total_count()); 488 result->long_at_put(1, rli.total_memory()); 489 result->long_at_put(2, rli.total_memory_to_free()); 490 return (jlongArray) JNIHandles::make_local(env, result); 491WB_END 492 493 494 495#endif // INCLUDE_ALL_GCS 496 497#if INCLUDE_NMT 498// Alloc memory using the test memory type so that we can use that to see if 499// NMT picks it up correctly 500WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 501 jlong addr = 0; 502 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 503 return addr; 504WB_END 505 506// Alloc memory with pseudo call stack. The test can create psudo malloc 507// allocation site to stress the malloc tracking. 508WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 509 address pc = (address)(size_t)pseudo_stack; 510 NativeCallStack stack(&pc, 1); 511 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 512WB_END 513 514// Free the memory allocated by NMTAllocTest 515WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 516 os::free((void*)(uintptr_t)mem); 517WB_END 518 519WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 520 jlong addr = 0; 521 522 addr = (jlong)(uintptr_t)os::reserve_memory(size); 523 MemTracker::record_virtual_memory_type((address)addr, mtTest); 524 525 return addr; 526WB_END 527 528WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 529 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 530 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 531WB_END 532 533WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 534 os::uncommit_memory((char *)(uintptr_t)addr, size); 535WB_END 536 537WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 538 os::release_memory((char *)(uintptr_t)addr, size); 539WB_END 540 541WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env)) 542 // Test that we can downgrade NMT levels but not upgrade them. 543 if (MemTracker::tracking_level() == NMT_off) { 544 MemTracker::transition_to(NMT_off); 545 return MemTracker::tracking_level() == NMT_off; 546 } else { 547 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking"); 548 MemTracker::transition_to(NMT_summary); 549 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now"); 550 551 // Can't go to detail once NMT is set to summary. 552 MemTracker::transition_to(NMT_detail); 553 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now"); 554 555 // Shutdown sets tracking level to minimal. 556 MemTracker::shutdown(); 557 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); 558 559 // Once the tracking level is minimal, we cannot increase to summary. 560 // The code ignores this request instead of asserting because if the malloc site 561 // table overflows in another thread, it tries to change the code to summary. 562 MemTracker::transition_to(NMT_summary); 563 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 564 565 // Really can never go up to detail, verify that the code would never do this. 566 MemTracker::transition_to(NMT_detail); 567 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 568 return MemTracker::tracking_level() == NMT_minimal; 569 } 570WB_END 571 572WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 573 int hash_size = MallocSiteTable::hash_buckets(); 574 assert(hash_size > 0, "NMT hash_size should be > 0"); 575 return (jint)hash_size; 576WB_END 577#endif // INCLUDE_NMT 578 579static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 580 assert(method != NULL, "method should not be null"); 581 ThreadToNativeFromVM ttn(thread); 582 return env->FromReflectedMethod(method); 583} 584 585// Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 586class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 587 private: 588 int _result; 589 const bool _make_not_entrant; 590 public: 591 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 592 _result(0), _make_not_entrant(make_not_entrant) { } 593 int result() const { return _result; } 594 595 void doit() { 596 for (JavaThread* t = Threads::first(); t != NULL; t = t->next()) { 597 if (t->has_last_Java_frame()) { 598 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) { 599 frame* f = fst.current(); 600 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 601 RegisterMap* reg_map = fst.register_map(); 602 Deoptimization::deoptimize(t, *f, reg_map); 603 if (_make_not_entrant) { 604 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 605 assert(cm != NULL, "sanity check"); 606 cm->make_not_entrant(); 607 } 608 ++_result; 609 } 610 } 611 } 612 } 613 } 614}; 615 616WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 617 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 618 VMThread::execute(&op); 619 return op.result(); 620WB_END 621 622WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 623 MutexLockerEx mu(Compile_lock); 624 CodeCache::mark_all_nmethods_for_deoptimization(); 625 VM_Deoptimize op; 626 VMThread::execute(&op); 627WB_END 628 629WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 630 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 631 int result = 0; 632 CHECK_JNI_EXCEPTION_(env, result); 633 MutexLockerEx mu(Compile_lock); 634 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 635 if (is_osr) { 636 result += mh->mark_osr_nmethods(); 637 } else if (mh->code() != NULL) { 638 mh->code()->mark_for_deoptimization(); 639 ++result; 640 } 641 result += CodeCache::mark_for_deoptimization(mh()); 642 if (result > 0) { 643 VM_Deoptimize op; 644 VMThread::execute(&op); 645 } 646 return result; 647WB_END 648 649WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 650 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 651 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 652 MutexLockerEx mu(Compile_lock); 653 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 654 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 655 if (code == NULL) { 656 return JNI_FALSE; 657 } 658 return (code->is_alive() && !code->is_marked_for_deoptimization()); 659WB_END 660 661WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 662 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 663 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 664 MutexLockerEx mu(Compile_lock); 665 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 666 if (is_osr) { 667 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); 668 } else { 669 return CompilationPolicy::can_be_compiled(mh, comp_level); 670 } 671WB_END 672 673WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 674 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 675 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 676 MutexLockerEx mu(Compile_lock); 677 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 678 return mh->queued_for_compilation(); 679WB_END 680 681WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 682 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 683 return false; // Intrinsic is not available on a non-existent compilation level. 684 } 685 jmethodID method_id, compilation_context_id; 686 method_id = reflected_method_to_jmid(thread, env, method); 687 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 688 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 689 690 DirectiveSet* directive; 691 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 692 assert(comp != NULL, "compiler not available"); 693 if (compilation_context != NULL) { 694 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 695 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 696 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 697 directive = DirectivesStack::getMatchingDirective(cch, comp); 698 } else { 699 // Calling with NULL matches default directive 700 directive = DirectivesStack::getDefaultDirective(comp); 701 } 702 bool result = comp->is_intrinsic_available(mh, directive); 703 DirectivesStack::release(directive); 704 return result; 705WB_END 706 707WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 708 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 709 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 710 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 711 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 712 return (code != NULL ? code->comp_level() : CompLevel_none); 713WB_END 714 715WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 716 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 717 CHECK_JNI_EXCEPTION(env); 718 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 719 if (is_osr) { 720 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox"); 721 } else { 722 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); 723 } 724WB_END 725 726WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 727 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 728 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 729 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 730 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 731 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 732WB_END 733 734WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 735 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 736 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 737 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 738 bool result = mh->dont_inline(); 739 mh->set_dont_inline(value == JNI_TRUE); 740 return result; 741WB_END 742 743WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 744 if (comp_level == CompLevel_any) { 745 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 746 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 747 } else { 748 return CompileBroker::queue_size(comp_level); 749 } 750WB_END 751 752WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 753 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 754 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 755 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 756 bool result = mh->force_inline(); 757 mh->set_force_inline(value == JNI_TRUE); 758 return result; 759WB_END 760 761bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) { 762 // Screen for unavailable/bad comp level or null method 763 if (method == NULL || comp_level > TieredStopAtLevel || 764 CompileBroker::compiler(comp_level) == NULL) { 765 return false; 766 } 767 methodHandle mh(THREAD, method); 768 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD); 769 MutexLockerEx mu(Compile_lock); 770 return (mh->queued_for_compilation() || nm != NULL); 771} 772 773WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 774 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 775 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 776 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 777WB_END 778 779WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 780 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 781 return WhiteBox::compile_method(ikh->class_initializer(), comp_level, InvocationEntryBci, THREAD); 782WB_END 783 784WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 785 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 786 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 787 788 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 789 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 790 bool result = directive->PrintAssemblyOption; 791 DirectivesStack::release(directive); 792 793 return result; 794WB_END 795 796WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 797 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 798 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 799 800 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 801 802 ResourceMark rm; 803 const char* error_msg = NULL; 804 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 805 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 806 807 if (m == NULL) { 808 assert(error_msg != NULL, "Always have an error message"); 809 tty->print_cr("Got error: %s", error_msg); 810 return -1; // Pattern failed 811 } 812 813 // Pattern works - now check if it matches 814 int result; 815 if (m->match(mh, InlineMatcher::force_inline)) { 816 result = 2; // Force inline match 817 } else if (m->match(mh, InlineMatcher::dont_inline)) { 818 result = 1; // Dont inline match 819 } else { 820 result = 0; // No match 821 } 822 delete m; 823 return result; 824WB_END 825 826WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 827 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 828 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 829 830 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 831 832 ResourceMark rm; 833 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 834 835 const char* error_msg = NULL; 836 837 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg); 838 if (m == NULL) { 839 assert(error_msg != NULL, "Must have error_msg"); 840 tty->print_cr("Got error: %s", error_msg); 841 return -1; 842 } 843 844 // Pattern works - now check if it matches 845 int result = m->matches(mh); 846 delete m; 847 assert(result == 0 || result == 1, "Result out of range"); 848 return result; 849WB_END 850 851static AlwaysFalseClosure always_false; 852 853WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 854 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 855 CHECK_JNI_EXCEPTION(env); 856 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 857 MutexLockerEx mu(Compile_lock); 858 MethodData* mdo = mh->method_data(); 859 MethodCounters* mcs = mh->method_counters(); 860 861 if (mdo != NULL) { 862 mdo->init(); 863 ResourceMark rm; 864 int arg_count = mdo->method()->size_of_parameters(); 865 for (int i = 0; i < arg_count; i++) { 866 mdo->set_arg_modified(i, 0); 867 } 868 MutexLockerEx mu(mdo->extra_data_lock()); 869 mdo->clean_method_data(&always_false); 870 } 871 872 mh->clear_not_c1_compilable(); 873 mh->clear_not_c2_compilable(); 874 mh->clear_not_c2_osr_compilable(); 875 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 876 if (mcs != NULL) { 877 mcs->backedge_counter()->init(); 878 mcs->invocation_counter()->init(); 879 mcs->set_interpreter_invocation_count(0); 880 mcs->set_interpreter_throwout_count(0); 881 882#ifdef TIERED 883 mcs->set_rate(0.0F); 884 mh->set_prev_event_count(0); 885 mh->set_prev_time(0); 886#endif 887 } 888WB_END 889 890template <typename T> 891static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) { 892 if (name == NULL) { 893 return false; 894 } 895 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 896 const char* flag_name = env->GetStringUTFChars(name, NULL); 897 CHECK_JNI_EXCEPTION_(env, false); 898 Flag::Error result = (*TAt)(flag_name, value, true, true); 899 env->ReleaseStringUTFChars(name, flag_name); 900 return (result == Flag::SUCCESS); 901} 902 903template <typename T> 904static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) { 905 if (name == NULL) { 906 return false; 907 } 908 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 909 const char* flag_name = env->GetStringUTFChars(name, NULL); 910 CHECK_JNI_EXCEPTION_(env, false); 911 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL); 912 env->ReleaseStringUTFChars(name, flag_name); 913 return (result == Flag::SUCCESS); 914} 915 916template <typename T> 917static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 918 ResourceMark rm(thread); 919 jclass clazz = env->FindClass(name->as_C_string()); 920 CHECK_JNI_EXCEPTION_(env, NULL); 921 jmethodID methodID = env->GetStaticMethodID(clazz, 922 vmSymbols::valueOf_name()->as_C_string(), 923 sig->as_C_string()); 924 CHECK_JNI_EXCEPTION_(env, NULL); 925 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 926 CHECK_JNI_EXCEPTION_(env, NULL); 927 return result; 928} 929 930static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 931 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 932} 933static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 934 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 935} 936static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 937 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 938} 939/* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 940 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 941}*/ 942static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 943 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 944} 945 946static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 947 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 948 const char* flag_name = env->GetStringUTFChars(name, NULL); 949 CHECK_JNI_EXCEPTION_(env, NULL); 950 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true); 951 env->ReleaseStringUTFChars(name, flag_name); 952 return result; 953} 954 955WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 956 Flag* flag = getVMFlag(thread, env, name); 957 return (flag != NULL) && flag->is_constant_in_binary(); 958WB_END 959 960WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 961 Flag* flag = getVMFlag(thread, env, name); 962 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 963WB_END 964 965WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 966 bool result; 967 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) { 968 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 969 return booleanBox(thread, env, result); 970 } 971 return NULL; 972WB_END 973 974WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 975 int result; 976 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) { 977 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 978 return longBox(thread, env, result); 979 } 980 return NULL; 981WB_END 982 983WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 984 uint result; 985 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) { 986 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 987 return longBox(thread, env, result); 988 } 989 return NULL; 990WB_END 991 992WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 993 intx result; 994 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) { 995 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 996 return longBox(thread, env, result); 997 } 998 return NULL; 999WB_END 1000 1001WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1002 uintx result; 1003 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) { 1004 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1005 return longBox(thread, env, result); 1006 } 1007 return NULL; 1008WB_END 1009 1010WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1011 uint64_t result; 1012 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) { 1013 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1014 return longBox(thread, env, result); 1015 } 1016 return NULL; 1017WB_END 1018 1019WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1020 uintx result; 1021 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) { 1022 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1023 return longBox(thread, env, result); 1024 } 1025 return NULL; 1026WB_END 1027 1028WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1029 double result; 1030 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) { 1031 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1032 return doubleBox(thread, env, result); 1033 } 1034 return NULL; 1035WB_END 1036 1037WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1038 ccstr ccstrResult; 1039 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) { 1040 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1041 jstring result = env->NewStringUTF(ccstrResult); 1042 CHECK_JNI_EXCEPTION_(env, NULL); 1043 return result; 1044 } 1045 return NULL; 1046WB_END 1047 1048WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1049 bool result = value == JNI_TRUE ? true : false; 1050 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut); 1051WB_END 1052 1053WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1054 int result = value; 1055 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut); 1056WB_END 1057 1058WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1059 uint result = value; 1060 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut); 1061WB_END 1062 1063WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1064 intx result = value; 1065 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut); 1066WB_END 1067 1068WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1069 uintx result = value; 1070 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut); 1071WB_END 1072 1073WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1074 uint64_t result = value; 1075 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut); 1076WB_END 1077 1078WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1079 size_t result = value; 1080 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut); 1081WB_END 1082 1083WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1084 double result = value; 1085 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut); 1086WB_END 1087 1088WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1089 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1090 const char* ccstrValue; 1091 if (value == NULL) { 1092 ccstrValue = NULL; 1093 } 1094 else { 1095 ccstrValue = env->GetStringUTFChars(value, NULL); 1096 CHECK_JNI_EXCEPTION(env); 1097 } 1098 ccstr ccstrResult = ccstrValue; 1099 bool needFree; 1100 { 1101 ThreadInVMfromNative ttvfn(thread); // back to VM 1102 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut); 1103 } 1104 if (value != NULL) { 1105 env->ReleaseStringUTFChars(value, ccstrValue); 1106 } 1107 if (needFree) { 1108 FREE_C_HEAP_ARRAY(char, ccstrResult); 1109 } 1110WB_END 1111 1112WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1113 WhiteBox::compilation_locked = true; 1114WB_END 1115 1116WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1117 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1118 WhiteBox::compilation_locked = false; 1119 mo.notify_all(); 1120WB_END 1121 1122WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 1123 // Force a code cache sweep and block until it finished 1124 NMethodSweeper::force_sweep(); 1125WB_END 1126 1127WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1128 ResourceMark rm(THREAD); 1129 int len; 1130 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1131 return (StringTable::lookup(name, len) != NULL); 1132WB_END 1133 1134WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1135 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true); 1136 Universe::heap()->collect(GCCause::_wb_full_gc); 1137#if INCLUDE_ALL_GCS 1138 if (UseG1GC) { 1139 // Needs to be cleared explicitly for G1 1140 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false); 1141 } 1142#endif // INCLUDE_ALL_GCS 1143WB_END 1144 1145WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1146 Universe::heap()->collect(GCCause::_wb_young_gc); 1147WB_END 1148 1149WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1150 // static+volatile in order to force the read to happen 1151 // (not be eliminated by the compiler) 1152 static char c; 1153 static volatile char* p; 1154 1155 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 1156 if (p == NULL) { 1157 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1158 } 1159 1160 c = *p; 1161WB_END 1162 1163WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1164 const char* features = VM_Version::features_string(); 1165 ThreadToNativeFromVM ttn(thread); 1166 jstring features_string = env->NewStringUTF(features); 1167 1168 CHECK_JNI_EXCEPTION_(env, NULL); 1169 1170 return features_string; 1171WB_END 1172 1173int WhiteBox::get_blob_type(const CodeBlob* code) { 1174 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1175 return CodeCache::get_code_heap(code)->code_blob_type(); 1176} 1177 1178CodeHeap* WhiteBox::get_code_heap(int blob_type) { 1179 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1180 return CodeCache::get_code_heap(blob_type); 1181} 1182 1183struct CodeBlobStub { 1184 CodeBlobStub(const CodeBlob* blob) : 1185 name(os::strdup(blob->name())), 1186 size(blob->size()), 1187 blob_type(WhiteBox::get_blob_type(blob)), 1188 address((jlong) blob) { } 1189 ~CodeBlobStub() { os::free((void*) name); } 1190 const char* const name; 1191 const jint size; 1192 const jint blob_type; 1193 const jlong address; 1194}; 1195 1196static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1197 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1198 CHECK_JNI_EXCEPTION_(env, NULL); 1199 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1200 1201 jstring name = env->NewStringUTF(cb->name); 1202 CHECK_JNI_EXCEPTION_(env, NULL); 1203 env->SetObjectArrayElement(result, 0, name); 1204 1205 jobject obj = integerBox(thread, env, cb->size); 1206 CHECK_JNI_EXCEPTION_(env, NULL); 1207 env->SetObjectArrayElement(result, 1, obj); 1208 1209 obj = integerBox(thread, env, cb->blob_type); 1210 CHECK_JNI_EXCEPTION_(env, NULL); 1211 env->SetObjectArrayElement(result, 2, obj); 1212 1213 obj = longBox(thread, env, cb->address); 1214 CHECK_JNI_EXCEPTION_(env, NULL); 1215 env->SetObjectArrayElement(result, 3, obj); 1216 1217 return result; 1218} 1219 1220WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1221 ResourceMark rm(THREAD); 1222 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1223 CHECK_JNI_EXCEPTION_(env, NULL); 1224 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1225 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1226 jobjectArray result = NULL; 1227 if (code == NULL) { 1228 return result; 1229 } 1230 int insts_size = code->insts_size(); 1231 1232 ThreadToNativeFromVM ttn(thread); 1233 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1234 CHECK_JNI_EXCEPTION_(env, NULL); 1235 result = env->NewObjectArray(5, clazz, NULL); 1236 if (result == NULL) { 1237 return result; 1238 } 1239 1240 CodeBlobStub stub(code); 1241 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1242 CHECK_JNI_EXCEPTION_(env, NULL); 1243 env->SetObjectArrayElement(result, 0, codeBlob); 1244 1245 jobject level = integerBox(thread, env, code->comp_level()); 1246 CHECK_JNI_EXCEPTION_(env, NULL); 1247 env->SetObjectArrayElement(result, 1, level); 1248 1249 jbyteArray insts = env->NewByteArray(insts_size); 1250 CHECK_JNI_EXCEPTION_(env, NULL); 1251 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1252 env->SetObjectArrayElement(result, 2, insts); 1253 1254 jobject id = integerBox(thread, env, code->compile_id()); 1255 CHECK_JNI_EXCEPTION_(env, NULL); 1256 env->SetObjectArrayElement(result, 3, id); 1257 1258 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1259 CHECK_JNI_EXCEPTION_(env, NULL); 1260 env->SetObjectArrayElement(result, 4, entry_point); 1261 1262 return result; 1263WB_END 1264 1265CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1266 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1267 BufferBlob* blob; 1268 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1269 if (full_size < size) { 1270 full_size += round_to(size - full_size, oopSize); 1271 } 1272 { 1273 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1274 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1275 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1276 } 1277 // Track memory usage statistic after releasing CodeCache_lock 1278 MemoryService::track_code_cache_memory_usage(); 1279 return blob; 1280} 1281 1282WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1283 if (size < 0) { 1284 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1285 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1286 } 1287 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1288WB_END 1289 1290WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1291 if (addr == 0) { 1292 return; 1293 } 1294 BufferBlob::free((BufferBlob*) addr); 1295WB_END 1296 1297WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1298 ResourceMark rm; 1299 GrowableArray<CodeBlobStub*> blobs; 1300 { 1301 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1302 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1303 if (heap == NULL) { 1304 return NULL; 1305 } 1306 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1307 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1308 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1309 new (stub) CodeBlobStub(cb); 1310 blobs.append(stub); 1311 } 1312 } 1313 if (blobs.length() == 0) { 1314 return NULL; 1315 } 1316 ThreadToNativeFromVM ttn(thread); 1317 jobjectArray result = NULL; 1318 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1319 CHECK_JNI_EXCEPTION_(env, NULL); 1320 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1321 CHECK_JNI_EXCEPTION_(env, NULL); 1322 if (result == NULL) { 1323 return result; 1324 } 1325 int i = 0; 1326 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1327 it != blobs.end(); ++it) { 1328 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1329 CHECK_JNI_EXCEPTION_(env, NULL); 1330 env->SetObjectArrayElement(result, i, obj); 1331 CHECK_JNI_EXCEPTION_(env, NULL); 1332 ++i; 1333 } 1334 return result; 1335WB_END 1336 1337WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1338 return CompileBroker::get_compilation_activity_mode(); 1339WB_END 1340 1341WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1342 if (addr == 0) { 1343 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1344 "WB_GetCodeBlob: addr is null"); 1345 } 1346 ThreadToNativeFromVM ttn(thread); 1347 CodeBlobStub stub((CodeBlob*) addr); 1348 return codeBlob2objectArray(thread, env, &stub); 1349WB_END 1350 1351WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1352 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1353 CHECK_JNI_EXCEPTION_(env, 0); 1354 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1355 return (jlong) mh->method_data(); 1356WB_END 1357 1358WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1359 return (jlong) Thread::current()->stack_size(); 1360WB_END 1361 1362WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1363 JavaThread* t = JavaThread::current(); 1364 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size(); 1365WB_END 1366 1367 1368int WhiteBox::array_bytes_to_length(size_t bytes) { 1369 return Array<u1>::bytes_to_length(bytes); 1370} 1371 1372WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1373 if (size < 0) { 1374 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1375 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1376 } 1377 1378 oop class_loader_oop = JNIHandles::resolve(class_loader); 1379 ClassLoaderData* cld = class_loader_oop != NULL 1380 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1381 : ClassLoaderData::the_null_class_loader_data(); 1382 1383 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1384 1385 return (jlong)(uintptr_t)metadata; 1386WB_END 1387 1388WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 1389 oop class_loader_oop = JNIHandles::resolve(class_loader); 1390 ClassLoaderData* cld = class_loader_oop != NULL 1391 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1392 : ClassLoaderData::the_null_class_loader_data(); 1393 1394 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 1395WB_END 1396 1397WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jstring version, jstring location, 1398 jobjectArray packages)) 1399 Modules::define_module(module, version, location, packages, CHECK); 1400WB_END 1401 1402WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1403 Modules::add_module_exports_qualified(from_module, package, to_module, CHECK); 1404WB_END 1405 1406WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1407 Modules::add_module_exports_to_all_unnamed(module, package, CHECK); 1408WB_END 1409 1410WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1411 Modules::add_module_exports(module, package, NULL, CHECK); 1412WB_END 1413 1414WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1415 Modules::add_reads_module(from_module, source_module, CHECK); 1416WB_END 1417 1418WB_ENTRY(void, WB_AddModulePackage(JNIEnv* env, jobject o, jclass module, jstring package)) 1419 Modules::add_module_package(module, package, CHECK); 1420WB_END 1421 1422WB_ENTRY(jobject, WB_GetModuleByPackageName(JNIEnv* env, jobject o, jobject loader, jstring package)) 1423 return Modules::get_module_by_package_name(loader, package, THREAD); 1424WB_END 1425 1426WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1427 if (inc < 0) { 1428 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1429 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1430 } 1431 1432 jlong max_size_t = (jlong) ((size_t) -1); 1433 if (inc > max_size_t) { 1434 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1435 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1436 } 1437 1438 size_t new_cap_until_GC = 0; 1439 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment()); 1440 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1441 if (!success) { 1442 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1443 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1444 "due to contention with another thread"); 1445 } 1446 return (jlong) new_cap_until_GC; 1447WB_END 1448 1449WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1450 return (jlong) MetaspaceGC::capacity_until_GC(); 1451WB_END 1452 1453WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb)) 1454 return MetaspaceGC::should_concurrent_collect(); 1455WB_END 1456 1457 1458WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue)) 1459 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ? 1460 Monitor::_safepoint_check_always : 1461 Monitor::_safepoint_check_never; 1462 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required), 1463 attemptedNoSafepointValue == JNI_TRUE); 1464WB_END 1465 1466WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1467 oop obj_oop = JNIHandles::resolve(obj); 1468 return (jboolean) obj_oop->mark()->has_monitor(); 1469WB_END 1470 1471WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1472 VM_ForceSafepoint force_safepoint_op; 1473 VMThread::execute(&force_safepoint_op); 1474WB_END 1475 1476WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1477 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1478 return (jlong) ikh->constants(); 1479WB_END 1480 1481WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1482 return ConstantPool::CPCACHE_INDEX_TAG; 1483WB_END 1484 1485WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1486 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1487 ConstantPool* cp = ikh->constants(); 1488 if (cp->cache() == NULL) { 1489 return -1; 1490 } 1491 return cp->cache()->length(); 1492WB_END 1493 1494WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1495 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1496 ConstantPool* cp = ikh->constants(); 1497 if (cp->cache() == NULL) { 1498 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1499 } 1500 jint cpci = index; 1501 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1502 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1503 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1504 } 1505 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1506 return cpi; 1507WB_END 1508 1509WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1510 return ConstantPool::encode_invokedynamic_index(index); 1511WB_END 1512 1513WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1514 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1515 VMThread::execute(&clear_ics); 1516WB_END 1517 1518template <typename T> 1519static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1520 assert(value != NULL, "sanity"); 1521 if (method == NULL || name == NULL) { 1522 return false; 1523 } 1524 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1525 CHECK_JNI_EXCEPTION_(env, false); 1526 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1527 // can't be in VM when we call JNI 1528 ThreadToNativeFromVM ttnfv(thread); 1529 const char* flag_name = env->GetStringUTFChars(name, NULL); 1530 CHECK_JNI_EXCEPTION_(env, false); 1531 bool result = CompilerOracle::has_option_value(mh, flag_name, *value); 1532 env->ReleaseStringUTFChars(name, flag_name); 1533 return result; 1534} 1535 1536WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1537 bool result; 1538 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1539 // can't be in VM when we call JNI 1540 ThreadToNativeFromVM ttnfv(thread); 1541 return booleanBox(thread, env, result); 1542 } 1543 return NULL; 1544WB_END 1545 1546WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1547 intx result; 1548 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1549 // can't be in VM when we call JNI 1550 ThreadToNativeFromVM ttnfv(thread); 1551 return longBox(thread, env, result); 1552 } 1553 return NULL; 1554WB_END 1555 1556WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1557 uintx result; 1558 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1559 // can't be in VM when we call JNI 1560 ThreadToNativeFromVM ttnfv(thread); 1561 return longBox(thread, env, result); 1562 } 1563 return NULL; 1564WB_END 1565 1566WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1567 double result; 1568 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1569 // can't be in VM when we call JNI 1570 ThreadToNativeFromVM ttnfv(thread); 1571 return doubleBox(thread, env, result); 1572 } 1573 return NULL; 1574WB_END 1575 1576WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1577 ccstr ccstrResult; 1578 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 1579 // can't be in VM when we call JNI 1580 ThreadToNativeFromVM ttnfv(thread); 1581 jstring result = env->NewStringUTF(ccstrResult); 1582 CHECK_JNI_EXCEPTION_(env, NULL); 1583 return result; 1584 } 1585 return NULL; 1586WB_END 1587 1588WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 1589 oop obj_oop = JNIHandles::resolve(obj); 1590 return MetaspaceShared::is_in_shared_space((void*)obj_oop); 1591WB_END 1592 1593WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 1594 return (jboolean)MetaspaceShared::is_in_shared_space(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1595WB_END 1596 1597WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env)) 1598 return StringTable::shared_string_ignored(); 1599WB_END 1600 1601//Some convenience methods to deal with objects from java 1602int WhiteBox::offset_for_field(const char* field_name, oop object, 1603 Symbol* signature_symbol) { 1604 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 1605 Thread* THREAD = Thread::current(); 1606 1607 //Get the class of our object 1608 Klass* arg_klass = object->klass(); 1609 //Turn it into an instance-klass 1610 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 1611 1612 //Create symbols to look for in the class 1613 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), 1614 THREAD); 1615 1616 //To be filled in with an offset of the field we're looking for 1617 fieldDescriptor fd; 1618 1619 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 1620 if (res == NULL) { 1621 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 1622 name_symbol->as_C_string()); 1623 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 1624 } 1625 1626 //fetch the field at the offset we've found 1627 int dest_offset = fd.offset(); 1628 1629 return dest_offset; 1630} 1631 1632 1633const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 1634 int offset = offset_for_field(field_name, object, 1635 vmSymbols::string_signature()); 1636 oop string = object->obj_field(offset); 1637 if (string == NULL) { 1638 return NULL; 1639 } 1640 const char* ret = java_lang_String::as_utf8_string(string); 1641 return ret; 1642} 1643 1644bool WhiteBox::lookup_bool(const char* field_name, oop object) { 1645 int offset = 1646 offset_for_field(field_name, object, vmSymbols::bool_signature()); 1647 bool ret = (object->bool_field(offset) == JNI_TRUE); 1648 return ret; 1649} 1650 1651void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 1652 ResourceMark rm; 1653 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1654 1655 // one by one registration natives for exception catching 1656 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 1657 CHECK_JNI_EXCEPTION(env); 1658 for (int i = 0, n = method_count; i < n; ++i) { 1659 // Skip dummy entries 1660 if (method_array[i].fnPtr == NULL) continue; 1661 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 1662 jthrowable throwable_obj = env->ExceptionOccurred(); 1663 if (throwable_obj != NULL) { 1664 env->ExceptionClear(); 1665 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 1666 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 1667 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 1668 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 1669 method_array[i].name, method_array[i].signature); 1670 } 1671 } else { 1672 // Registration failed unexpectedly. 1673 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 1674 method_array[i].name, method_array[i].signature); 1675 env->UnregisterNatives(wbclass); 1676 break; 1677 } 1678 } 1679 } 1680} 1681 1682WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 1683 // can't be in VM when we call JNI 1684 ThreadToNativeFromVM ttnfv(thread); 1685 const char* dir = env->GetStringUTFChars(compDirect, NULL); 1686 CHECK_JNI_EXCEPTION_(env, 0); 1687 int ret; 1688 { 1689 ThreadInVMfromNative ttvfn(thread); // back to VM 1690 ret = DirectivesParser::parse_string(dir, tty); 1691 } 1692 env->ReleaseStringUTFChars(compDirect, dir); 1693 // -1 for error parsing directive. Return 0 as number of directives added. 1694 if (ret == -1) { 1695 ret = 0; 1696 } 1697 return (jint) ret; 1698WB_END 1699 1700WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 1701 DirectivesStack::pop(count); 1702WB_END 1703 1704#define CC (char*) 1705 1706static JNINativeMethod methods[] = { 1707 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 1708 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 1709 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 1710 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 1711 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 1712 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 1713 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 1714 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 1715 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 1716 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, 1717 {CC"parseCommandLine0", 1718 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 1719 (void*) &WB_ParseCommandLine 1720 }, 1721 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1722 (void*)&WB_AddToBootstrapClassLoaderSearch}, 1723 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1724 (void*)&WB_AddToSystemClassLoaderSearch}, 1725 {CC"getCompressedOopsMaxHeapSize", CC"()J", 1726 (void*)&WB_GetCompressedOopsMaxHeapSize}, 1727 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 1728 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 1729 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 1730 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 1731#if INCLUDE_ALL_GCS 1732 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 1733 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 1734 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 1735 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 1736 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 1737 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 1738 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 1739 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 1740 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 1741 (void*)&WB_G1AuxiliaryMemoryUsage }, 1742 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 1743 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 1744 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 1745#endif // INCLUDE_ALL_GCS 1746#if INCLUDE_NMT 1747 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 1748 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 1749 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 1750 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 1751 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 1752 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 1753 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 1754 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 1755 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 1756#endif // INCLUDE_NMT 1757 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 1758 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 1759 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 1760 (void*)&WB_DeoptimizeMethod }, 1761 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 1762 (void*)&WB_IsMethodCompiled }, 1763 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 1764 (void*)&WB_IsMethodCompilable}, 1765 {CC"isMethodQueuedForCompilation0", 1766 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 1767 {CC"isIntrinsicAvailable0", 1768 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 1769 (void*)&WB_IsIntrinsicAvailable}, 1770 {CC"makeMethodNotCompilable0", 1771 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 1772 {CC"testSetDontInlineMethod0", 1773 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 1774 {CC"getMethodCompilationLevel0", 1775 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 1776 {CC"getMethodEntryBci0", 1777 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 1778 {CC"getCompileQueueSize", 1779 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 1780 {CC"testSetForceInlineMethod0", 1781 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 1782 {CC"enqueueMethodForCompilation0", 1783 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 1784 {CC"enqueueInitializerForCompilation0", 1785 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 1786 {CC"clearMethodState0", 1787 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 1788 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 1789 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 1790 {CC"matchesMethod", 1791 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 1792 (void*)&WB_MatchesMethod}, 1793 {CC"matchesInline", 1794 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 1795 (void*)&WB_MatchesInline}, 1796 {CC"shouldPrintAssembly", 1797 CC"(Ljava/lang/reflect/Executable;I)Z", 1798 (void*)&WB_ShouldPrintAssembly}, 1799 1800 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 1801 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 1802 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 1803 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 1804 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 1805 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 1806 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 1807 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 1808 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 1809 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 1810 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 1811 (void*)&WB_SetStringVMFlag}, 1812 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 1813 (void*)&WB_GetBooleanVMFlag}, 1814 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1815 (void*)&WB_GetIntVMFlag}, 1816 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1817 (void*)&WB_GetUintVMFlag}, 1818 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1819 (void*)&WB_GetIntxVMFlag}, 1820 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1821 (void*)&WB_GetUintxVMFlag}, 1822 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1823 (void*)&WB_GetUint64VMFlag}, 1824 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1825 (void*)&WB_GetSizeTVMFlag}, 1826 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 1827 (void*)&WB_GetDoubleVMFlag}, 1828 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 1829 (void*)&WB_GetStringVMFlag}, 1830 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 1831 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 1832 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 1833 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 1834 {CC"allocateMetaspace", 1835 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 1836 {CC"freeMetaspace", 1837 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 1838 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 1839 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 1840 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect }, 1841 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 1842 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 1843 (void*)&WB_GetNMethod }, 1844 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 1845 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 1846 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 1847 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 1848 {CC"getCompilationActivityMode", 1849 CC"()I", (void*)&WB_GetCompilationActivityMode}, 1850 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 1851 (void*)&WB_GetMethodData }, 1852 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 1853 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 1854 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 1855 {CC"DefineModule", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 1856 (void*)&WB_DefineModule }, 1857 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 1858 (void*)&WB_AddModuleExports }, 1859 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 1860 (void*)&WB_AddReadsModule }, 1861 {CC"AddModulePackage", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 1862 (void*)&WB_AddModulePackage }, 1863 {CC"GetModuleByPackageName", CC"(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;", 1864 (void*)&WB_GetModuleByPackageName }, 1865 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 1866 (void*)&WB_AddModuleExportsToAllUnnamed }, 1867 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 1868 (void*)&WB_AddModuleExportsToAll }, 1869 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls }, 1870 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 1871 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 1872 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 1873 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 1874 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 1875 {CC"remapInstructionOperandFromCPCache0", 1876 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 1877 {CC"encodeConstantPoolIndyIndex0", 1878 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 1879 {CC"getMethodBooleanOption", 1880 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 1881 (void*)&WB_GetMethodBooleaneOption}, 1882 {CC"getMethodIntxOption", 1883 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 1884 (void*)&WB_GetMethodIntxOption}, 1885 {CC"getMethodUintxOption", 1886 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 1887 (void*)&WB_GetMethodUintxOption}, 1888 {CC"getMethodDoubleOption", 1889 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 1890 (void*)&WB_GetMethodDoubleOption}, 1891 {CC"getMethodStringOption", 1892 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 1893 (void*)&WB_GetMethodStringOption}, 1894 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 1895 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 1896 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored }, 1897 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 1898 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 1899 (void*)&WB_AddCompilerDirective }, 1900 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 1901 {CC"currentGC", CC"()I", (void*)&WB_CurrentGC}, 1902 {CC"allSupportedGC", CC"()I", (void*)&WB_AllSupportedGC}, 1903 {CC"gcSelectedByErgo", CC"()Z", (void*)&WB_GCSelectedByErgo}, 1904}; 1905 1906#undef CC 1907 1908JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 1909 { 1910 if (WhiteBoxAPI) { 1911 // Make sure that wbclass is loaded by the null classloader 1912 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass()); 1913 Handle loader(ikh->class_loader()); 1914 if (loader.is_null()) { 1915 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 1916 WhiteBox::register_extended(env, wbclass, thread); 1917 WhiteBox::set_used(); 1918 } 1919 } 1920 } 1921JVM_END 1922