1/* 2 * Copyright (c) 2012, 2017, 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/objArrayKlass.hpp" 44#include "oops/objArrayOop.inline.hpp" 45#include "oops/oop.inline.hpp" 46#include "prims/wbtestmethods/parserTests.hpp" 47#include "prims/whitebox.hpp" 48#include "runtime/arguments.hpp" 49#include "runtime/compilationPolicy.hpp" 50#include "runtime/deoptimization.hpp" 51#include "runtime/interfaceSupport.hpp" 52#include "runtime/javaCalls.hpp" 53#include "runtime/os.hpp" 54#include "runtime/sweeper.hpp" 55#include "runtime/thread.hpp" 56#include "runtime/vm_version.hpp" 57#include "utilities/array.hpp" 58#include "utilities/debug.hpp" 59#include "utilities/exceptions.hpp" 60#include "utilities/macros.hpp" 61#if INCLUDE_ALL_GCS 62#include "gc/g1/concurrentMarkThread.hpp" 63#include "gc/g1/g1CollectedHeap.inline.hpp" 64#include "gc/g1/g1ConcurrentMark.hpp" 65#include "gc/g1/heapRegionRemSet.hpp" 66#include "gc/parallel/parallelScavengeHeap.inline.hpp" 67#include "gc/parallel/adjoiningGenerations.hpp" 68#endif // INCLUDE_ALL_GCS 69#if INCLUDE_NMT 70#include "services/mallocSiteTable.hpp" 71#include "services/memTracker.hpp" 72#include "utilities/nativeCallStack.hpp" 73#endif // INCLUDE_NMT 74 75 76#define SIZE_T_MAX_VALUE ((size_t) -1) 77 78bool WhiteBox::_used = false; 79volatile bool WhiteBox::compilation_locked = false; 80 81class VM_WhiteBoxOperation : public VM_Operation { 82 public: 83 VM_WhiteBoxOperation() { } 84 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 85 bool allow_nested_vm_operations() const { return true; } 86}; 87 88 89WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 90 return (jlong)(void*)JNIHandles::resolve(obj); 91WB_END 92 93WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 94 return heapOopSize; 95WB_END 96 97WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 98 return os::vm_page_size(); 99WB_END 100 101WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 102 return os::vm_allocation_granularity(); 103WB_END 104 105WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 106 return os::large_page_size(); 107WB_END 108 109class WBIsKlassAliveClosure : public KlassClosure { 110 Symbol* _name; 111 bool _found; 112public: 113 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} 114 115 void do_klass(Klass* k) { 116 if (_found) return; 117 Symbol* ksym = k->name(); 118 if (ksym->fast_compare(_name) == 0) { 119 _found = true; 120 } 121 } 122 123 bool found() const { 124 return _found; 125 } 126}; 127 128WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) 129 Handle h_name = JNIHandles::resolve(name); 130 if (h_name.is_null()) return false; 131 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false); 132 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 133 134 WBIsKlassAliveClosure closure(sym); 135 ClassLoaderDataGraph::classes_do(&closure); 136 137 return closure.found(); 138WB_END 139 140WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 141#if INCLUDE_JVMTI 142 ResourceMark rm; 143 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 144 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 145 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 146 assert(err == JVMTI_ERROR_NONE, "must not fail"); 147#endif 148} 149WB_END 150 151WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 152#if INCLUDE_JVMTI 153 ResourceMark rm; 154 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 155 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 156 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 157 assert(err == JVMTI_ERROR_NONE, "must not fail"); 158#endif 159} 160WB_END 161 162 163WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 164 return (jlong)Arguments::max_heap_for_compressed_oops(); 165} 166WB_END 167 168WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 169 CollectorPolicy * p = Universe::heap()->collector_policy(); 170 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " 171 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 172 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(), 173 p->space_alignment(), p->heap_alignment()); 174} 175WB_END 176 177#ifndef PRODUCT 178// Forward declaration 179void TestReservedSpace_test(); 180void TestReserveMemorySpecial_test(); 181void TestVirtualSpace_test(); 182void TestMetaspaceAux_test(); 183#endif 184 185WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) 186#ifndef PRODUCT 187 TestReservedSpace_test(); 188 TestReserveMemorySpecial_test(); 189 TestVirtualSpace_test(); 190 TestMetaspaceAux_test(); 191#endif 192WB_END 193 194WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 195 size_t granularity = os::vm_allocation_granularity(); 196 ReservedHeapSpace rhs(100 * granularity, granularity, false); 197 VirtualSpace vs; 198 vs.initialize(rhs, 50 * granularity); 199 200 // Check if constraints are complied 201 if (!( UseCompressedOops && rhs.base() != NULL && 202 Universe::narrow_oop_base() != NULL && 203 Universe::narrow_oop_use_implicit_null_checks() )) { 204 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 205 "\tUseCompressedOops is %d\n" 206 "\trhs.base() is " PTR_FORMAT "\n" 207 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n" 208 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d", 209 UseCompressedOops, 210 p2i(rhs.base()), 211 p2i(Universe::narrow_oop_base()), 212 Universe::narrow_oop_use_implicit_null_checks()); 213 return; 214 } 215 tty->print_cr("Reading from no access area... "); 216 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 217 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 218WB_END 219 220static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 221 size_t magnitude, size_t iterations) { 222 size_t granularity = os::vm_allocation_granularity(); 223 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false); 224 VirtualSpace vs; 225 if (!vs.initialize(rhs, 0)) { 226 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 227 return 3; 228 } 229 230 long seed = os::random(); 231 tty->print_cr("Random seed is %ld", seed); 232 os::init_random(seed); 233 234 for (size_t i = 0; i < iterations; i++) { 235 236 // Whether we will shrink or grow 237 bool shrink = os::random() % 2L == 0; 238 239 // Get random delta to resize virtual space 240 size_t delta = (size_t)os::random() % magnitude; 241 242 // If we are about to shrink virtual space below zero, then expand instead 243 if (shrink && vs.committed_size() < delta) { 244 shrink = false; 245 } 246 247 // Resizing by delta 248 if (shrink) { 249 vs.shrink_by(delta); 250 } else { 251 // If expanding fails expand_by will silently return false 252 vs.expand_by(delta, true); 253 } 254 } 255 return 0; 256} 257 258WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 259 jlong reserved_space_size, jlong magnitude, jlong iterations)) 260 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 261 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 262 iterations); 263 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 264 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 265 return 1; 266 } 267 268 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 269 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 270 if (sizeof(size_t) < sizeof(jlong)) { 271 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; 272 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 273 || iterations > size_t_max_value) { 274 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 275 return 2; 276 } 277 } 278 279 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 280 (size_t) magnitude, (size_t) iterations); 281WB_END 282 283static const jint serial_code = 1; 284static const jint parallel_code = 2; 285static const jint cms_code = 4; 286static const jint g1_code = 8; 287 288WB_ENTRY(jint, WB_CurrentGC(JNIEnv* env, jobject o, jobject obj)) 289 if (UseSerialGC) { 290 return serial_code; 291 } else if (UseParallelGC || UseParallelOldGC) { 292 return parallel_code; 293 } if (UseConcMarkSweepGC) { 294 return cms_code; 295 } else if (UseG1GC) { 296 return g1_code; 297 } 298 ShouldNotReachHere(); 299 return 0; 300WB_END 301 302WB_ENTRY(jint, WB_AllSupportedGC(JNIEnv* env, jobject o, jobject obj)) 303#if INCLUDE_ALL_GCS 304 return serial_code | parallel_code | cms_code | g1_code; 305#else 306 return serial_code; 307#endif // INCLUDE_ALL_GCS 308WB_END 309 310WB_ENTRY(jboolean, WB_GCSelectedByErgo(JNIEnv* env, jobject o, jobject obj)) 311 if (UseSerialGC) { 312 return FLAG_IS_ERGO(UseSerialGC); 313 } else if (UseParallelGC) { 314 return FLAG_IS_ERGO(UseParallelGC); 315 } else if (UseParallelOldGC) { 316 return FLAG_IS_ERGO(UseParallelOldGC); 317 } else if (UseConcMarkSweepGC) { 318 return FLAG_IS_ERGO(UseConcMarkSweepGC); 319 } else if (UseG1GC) { 320 return FLAG_IS_ERGO(UseG1GC); 321 } 322 ShouldNotReachHere(); 323 return false; 324WB_END 325 326WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 327 oop p = JNIHandles::resolve(obj); 328#if INCLUDE_ALL_GCS 329 if (UseG1GC) { 330 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 331 const HeapRegion* hr = g1->heap_region_containing(p); 332 if (hr == NULL) { 333 return false; 334 } 335 return !(hr->is_young()); 336 } else if (UseParallelGC) { 337 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 338 return !psh->is_in_young(p); 339 } 340#endif // INCLUDE_ALL_GCS 341 GenCollectedHeap* gch = GenCollectedHeap::heap(); 342 return !gch->is_in_young(p); 343WB_END 344 345WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 346 oop p = JNIHandles::resolve(obj); 347 return p->size() * HeapWordSize; 348WB_END 349 350WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 351 size_t alignment = Universe::heap()->collector_policy()->space_alignment(); 352 return (jlong)alignment; 353WB_END 354 355WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o)) 356 size_t alignment = Universe::heap()->collector_policy()->heap_alignment(); 357 return (jlong)alignment; 358WB_END 359 360#if INCLUDE_ALL_GCS 361WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 362 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 363 oop result = JNIHandles::resolve(obj); 364 const HeapRegion* hr = g1->heap_region_containing(result); 365 return hr->is_humongous(); 366WB_END 367 368WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 369 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 370 const HeapRegion* hr = g1->heap_region_containing((void*) addr); 371 return hr->is_humongous(); 372WB_END 373 374WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 375 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 376 const HeapRegion* hr = g1->heap_region_containing((void*) addr); 377 return hr->is_free(); 378WB_END 379 380WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 381 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 382 size_t nr = g1->max_regions(); 383 return (jlong)nr; 384WB_END 385 386WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 387 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 388 size_t nr = g1->num_free_regions(); 389 return (jlong)nr; 390WB_END 391 392WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 393 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 394 return g1h->concurrent_mark()->cmThread()->during_cycle(); 395WB_END 396 397WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o)) 398 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 399 if (!g1h->concurrent_mark()->cmThread()->during_cycle()) { 400 g1h->collect(GCCause::_wb_conc_mark); 401 return true; 402 } 403 return false; 404WB_END 405 406WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 407 return (jint)HeapRegion::GrainBytes; 408WB_END 409 410WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 411#if INCLUDE_ALL_GCS 412 if (UseParallelGC) { 413 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment(); 414 } 415#endif // INCLUDE_ALL_GCS 416 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled"); 417WB_END 418 419WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 420#if INCLUDE_ALL_GCS 421 if (UseParallelGC) { 422 return ParallelScavengeHeap::heap()->generation_alignment(); 423 } 424#endif // INCLUDE_ALL_GCS 425 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled"); 426WB_END 427 428WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 429 ResourceMark rm(THREAD); 430 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 431 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 432 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 433 return JNIHandles::make_local(env, h()); 434WB_END 435 436class OldRegionsLivenessClosure: public HeapRegionClosure { 437 438 private: 439 const int _liveness; 440 size_t _total_count; 441 size_t _total_memory; 442 size_t _total_memory_to_free; 443 444 public: 445 OldRegionsLivenessClosure(int liveness) : 446 _liveness(liveness), 447 _total_count(0), 448 _total_memory(0), 449 _total_memory_to_free(0) { } 450 451 size_t total_count() { return _total_count; } 452 size_t total_memory() { return _total_memory; } 453 size_t total_memory_to_free() { return _total_memory_to_free; } 454 455 bool doHeapRegion(HeapRegion* r) { 456 if (r->is_old()) { 457 size_t prev_live = r->marked_bytes(); 458 size_t live = r->live_bytes(); 459 size_t size = r->used(); 460 size_t reg_size = HeapRegion::GrainBytes; 461 if (size > 0 && ((int)(live * 100 / size) < _liveness)) { 462 _total_memory += size; 463 ++_total_count; 464 if (size == reg_size) { 465 // we don't include non-full regions since they are unlikely included in mixed gc 466 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed 467 _total_memory_to_free += size - prev_live; 468 } 469 } 470 } 471 return false; 472 } 473}; 474 475 476WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness)) 477 if (!UseG1GC) { 478 THROW_MSG_NULL(vmSymbols::java_lang_RuntimeException(), "WB_G1GetMixedGCInfo: G1 is not enabled"); 479 } 480 if (liveness < 0) { 481 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative"); 482 } 483 484 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 485 OldRegionsLivenessClosure rli(liveness); 486 g1h->heap_region_iterate(&rli); 487 488 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL); 489 result->long_at_put(0, rli.total_count()); 490 result->long_at_put(1, rli.total_memory()); 491 result->long_at_put(2, rli.total_memory_to_free()); 492 return (jlongArray) JNIHandles::make_local(env, result); 493WB_END 494 495 496 497#endif // INCLUDE_ALL_GCS 498 499#if INCLUDE_NMT 500// Alloc memory using the test memory type so that we can use that to see if 501// NMT picks it up correctly 502WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 503 jlong addr = 0; 504 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 505 return addr; 506WB_END 507 508// Alloc memory with pseudo call stack. The test can create psudo malloc 509// allocation site to stress the malloc tracking. 510WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 511 address pc = (address)(size_t)pseudo_stack; 512 NativeCallStack stack(&pc, 1); 513 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 514WB_END 515 516// Free the memory allocated by NMTAllocTest 517WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 518 os::free((void*)(uintptr_t)mem); 519WB_END 520 521WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 522 jlong addr = 0; 523 524 addr = (jlong)(uintptr_t)os::reserve_memory(size); 525 MemTracker::record_virtual_memory_type((address)addr, mtTest); 526 527 return addr; 528WB_END 529 530WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 531 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 532 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 533WB_END 534 535WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 536 os::uncommit_memory((char *)(uintptr_t)addr, size); 537WB_END 538 539WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 540 os::release_memory((char *)(uintptr_t)addr, size); 541WB_END 542 543WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env)) 544 // Test that we can downgrade NMT levels but not upgrade them. 545 if (MemTracker::tracking_level() == NMT_off) { 546 MemTracker::transition_to(NMT_off); 547 return MemTracker::tracking_level() == NMT_off; 548 } else { 549 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking"); 550 MemTracker::transition_to(NMT_summary); 551 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now"); 552 553 // Can't go to detail once NMT is set to summary. 554 MemTracker::transition_to(NMT_detail); 555 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now"); 556 557 // Shutdown sets tracking level to minimal. 558 MemTracker::shutdown(); 559 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); 560 561 // Once the tracking level is minimal, we cannot increase to summary. 562 // The code ignores this request instead of asserting because if the malloc site 563 // table overflows in another thread, it tries to change the code to summary. 564 MemTracker::transition_to(NMT_summary); 565 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 566 567 // Really can never go up to detail, verify that the code would never do this. 568 MemTracker::transition_to(NMT_detail); 569 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 570 return MemTracker::tracking_level() == NMT_minimal; 571 } 572WB_END 573 574WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 575 int hash_size = MallocSiteTable::hash_buckets(); 576 assert(hash_size > 0, "NMT hash_size should be > 0"); 577 return (jint)hash_size; 578WB_END 579#endif // INCLUDE_NMT 580 581static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 582 assert(method != NULL, "method should not be null"); 583 ThreadToNativeFromVM ttn(thread); 584 return env->FromReflectedMethod(method); 585} 586 587// Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 588class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 589 private: 590 int _result; 591 const bool _make_not_entrant; 592 public: 593 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 594 _result(0), _make_not_entrant(make_not_entrant) { } 595 int result() const { return _result; } 596 597 void doit() { 598 for (JavaThread* t = Threads::first(); t != NULL; t = t->next()) { 599 if (t->has_last_Java_frame()) { 600 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) { 601 frame* f = fst.current(); 602 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 603 RegisterMap* reg_map = fst.register_map(); 604 Deoptimization::deoptimize(t, *f, reg_map); 605 if (_make_not_entrant) { 606 CompiledMethod* cm = CodeCache::find_compiled(f->pc()); 607 assert(cm != NULL, "sanity check"); 608 cm->make_not_entrant(); 609 } 610 ++_result; 611 } 612 } 613 } 614 } 615 } 616}; 617 618WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 619 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 620 VMThread::execute(&op); 621 return op.result(); 622WB_END 623 624WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 625 MutexLockerEx mu(Compile_lock); 626 CodeCache::mark_all_nmethods_for_deoptimization(); 627 VM_Deoptimize op; 628 VMThread::execute(&op); 629WB_END 630 631WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 632 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 633 int result = 0; 634 CHECK_JNI_EXCEPTION_(env, result); 635 MutexLockerEx mu(Compile_lock); 636 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 637 if (is_osr) { 638 result += mh->mark_osr_nmethods(); 639 } else if (mh->code() != NULL) { 640 mh->code()->mark_for_deoptimization(); 641 ++result; 642 } 643 result += CodeCache::mark_for_deoptimization(mh()); 644 if (result > 0) { 645 VM_Deoptimize op; 646 VMThread::execute(&op); 647 } 648 return result; 649WB_END 650 651WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 652 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 653 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 654 MutexLockerEx mu(Compile_lock); 655 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 656 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 657 if (code == NULL) { 658 return JNI_FALSE; 659 } 660 return (code->is_alive() && !code->is_marked_for_deoptimization()); 661WB_END 662 663WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 664 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 665 return false; 666 } 667 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 668 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 669 MutexLockerEx mu(Compile_lock); 670 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 671 if (is_osr) { 672 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); 673 } else { 674 return CompilationPolicy::can_be_compiled(mh, comp_level); 675 } 676WB_END 677 678WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 679 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 680 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 681 MutexLockerEx mu(Compile_lock); 682 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 683 return mh->queued_for_compilation(); 684WB_END 685 686WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 687 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) { 688 return false; // Intrinsic is not available on a non-existent compilation level. 689 } 690 jmethodID method_id, compilation_context_id; 691 method_id = reflected_method_to_jmid(thread, env, method); 692 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 693 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 694 695 DirectiveSet* directive; 696 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 697 assert(comp != NULL, "compiler not available"); 698 if (compilation_context != NULL) { 699 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 700 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 701 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 702 directive = DirectivesStack::getMatchingDirective(cch, comp); 703 } else { 704 // Calling with NULL matches default directive 705 directive = DirectivesStack::getDefaultDirective(comp); 706 } 707 bool result = comp->is_intrinsic_available(mh, directive); 708 DirectivesStack::release(directive); 709 return result; 710WB_END 711 712WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 713 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 714 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 715 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 716 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 717 return (code != NULL ? code->comp_level() : CompLevel_none); 718WB_END 719 720WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 721 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 722 CHECK_JNI_EXCEPTION(env); 723 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 724 if (is_osr) { 725 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox"); 726 } else { 727 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); 728 } 729WB_END 730 731WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 732 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 733 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 734 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 735 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 736 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 737WB_END 738 739WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 740 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 741 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 742 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 743 bool result = mh->dont_inline(); 744 mh->set_dont_inline(value == JNI_TRUE); 745 return result; 746WB_END 747 748WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 749 if (comp_level == CompLevel_any) { 750 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 751 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 752 } else { 753 return CompileBroker::queue_size(comp_level); 754 } 755WB_END 756 757WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 758 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 759 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 760 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 761 bool result = mh->force_inline(); 762 mh->set_force_inline(value == JNI_TRUE); 763 return result; 764WB_END 765 766bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) { 767 // Screen for unavailable/bad comp level or null method 768 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) || 769 CompileBroker::compiler(comp_level) == NULL) { 770 return false; 771 } 772 methodHandle mh(THREAD, method); 773 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD); 774 MutexLockerEx mu(Compile_lock); 775 return (mh->queued_for_compilation() || nm != NULL); 776} 777 778WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 779 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 780 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 781 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD); 782WB_END 783 784WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level)) 785 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 786 return WhiteBox::compile_method(ikh->class_initializer(), comp_level, InvocationEntryBci, THREAD); 787WB_END 788 789WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level)) 790 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 791 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 792 793 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 794 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level)); 795 bool result = directive->PrintAssemblyOption; 796 DirectivesStack::release(directive); 797 798 return result; 799WB_END 800 801WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 802 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 803 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 804 805 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 806 807 ResourceMark rm; 808 const char* error_msg = NULL; 809 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 810 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 811 812 if (m == NULL) { 813 assert(error_msg != NULL, "Always have an error message"); 814 tty->print_cr("Got error: %s", error_msg); 815 return -1; // Pattern failed 816 } 817 818 // Pattern works - now check if it matches 819 int result; 820 if (m->match(mh, InlineMatcher::force_inline)) { 821 result = 2; // Force inline match 822 } else if (m->match(mh, InlineMatcher::dont_inline)) { 823 result = 1; // Dont inline match 824 } else { 825 result = 0; // No match 826 } 827 delete m; 828 return result; 829WB_END 830 831WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 832 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 833 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 834 835 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 836 837 ResourceMark rm; 838 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 839 840 const char* error_msg = NULL; 841 842 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg); 843 if (m == NULL) { 844 assert(error_msg != NULL, "Must have error_msg"); 845 tty->print_cr("Got error: %s", error_msg); 846 return -1; 847 } 848 849 // Pattern works - now check if it matches 850 int result = m->matches(mh); 851 delete m; 852 assert(result == 0 || result == 1, "Result out of range"); 853 return result; 854WB_END 855 856static AlwaysFalseClosure always_false; 857 858WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 859 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 860 CHECK_JNI_EXCEPTION(env); 861 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 862 MutexLockerEx mu(Compile_lock); 863 MethodData* mdo = mh->method_data(); 864 MethodCounters* mcs = mh->method_counters(); 865 866 if (mdo != NULL) { 867 mdo->init(); 868 ResourceMark rm; 869 int arg_count = mdo->method()->size_of_parameters(); 870 for (int i = 0; i < arg_count; i++) { 871 mdo->set_arg_modified(i, 0); 872 } 873 MutexLockerEx mu(mdo->extra_data_lock()); 874 mdo->clean_method_data(&always_false); 875 } 876 877 mh->clear_not_c1_compilable(); 878 mh->clear_not_c2_compilable(); 879 mh->clear_not_c2_osr_compilable(); 880 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 881 if (mcs != NULL) { 882 mcs->backedge_counter()->init(); 883 mcs->invocation_counter()->init(); 884 mcs->set_interpreter_invocation_count(0); 885 mcs->set_interpreter_throwout_count(0); 886 887#ifdef TIERED 888 mcs->set_rate(0.0F); 889 mh->set_prev_event_count(0); 890 mh->set_prev_time(0); 891#endif 892 } 893WB_END 894 895template <typename T> 896static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) { 897 if (name == NULL) { 898 return false; 899 } 900 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 901 const char* flag_name = env->GetStringUTFChars(name, NULL); 902 CHECK_JNI_EXCEPTION_(env, false); 903 Flag::Error result = (*TAt)(flag_name, value, true, true); 904 env->ReleaseStringUTFChars(name, flag_name); 905 return (result == Flag::SUCCESS); 906} 907 908template <typename T> 909static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) { 910 if (name == NULL) { 911 return false; 912 } 913 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 914 const char* flag_name = env->GetStringUTFChars(name, NULL); 915 CHECK_JNI_EXCEPTION_(env, false); 916 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL); 917 env->ReleaseStringUTFChars(name, flag_name); 918 return (result == Flag::SUCCESS); 919} 920 921template <typename T> 922static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 923 ResourceMark rm(thread); 924 jclass clazz = env->FindClass(name->as_C_string()); 925 CHECK_JNI_EXCEPTION_(env, NULL); 926 jmethodID methodID = env->GetStaticMethodID(clazz, 927 vmSymbols::valueOf_name()->as_C_string(), 928 sig->as_C_string()); 929 CHECK_JNI_EXCEPTION_(env, NULL); 930 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 931 CHECK_JNI_EXCEPTION_(env, NULL); 932 return result; 933} 934 935static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 936 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 937} 938static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 939 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 940} 941static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 942 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 943} 944/* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 945 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 946}*/ 947static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 948 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 949} 950 951static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 952 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 953 const char* flag_name = env->GetStringUTFChars(name, NULL); 954 CHECK_JNI_EXCEPTION_(env, NULL); 955 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true); 956 env->ReleaseStringUTFChars(name, flag_name); 957 return result; 958} 959 960WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 961 Flag* flag = getVMFlag(thread, env, name); 962 return (flag != NULL) && flag->is_constant_in_binary(); 963WB_END 964 965WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 966 Flag* flag = getVMFlag(thread, env, name); 967 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 968WB_END 969 970WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 971 bool result; 972 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) { 973 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 974 return booleanBox(thread, env, result); 975 } 976 return NULL; 977WB_END 978 979WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 980 int result; 981 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) { 982 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 983 return longBox(thread, env, result); 984 } 985 return NULL; 986WB_END 987 988WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 989 uint result; 990 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) { 991 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 992 return longBox(thread, env, result); 993 } 994 return NULL; 995WB_END 996 997WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 998 intx result; 999 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) { 1000 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1001 return longBox(thread, env, result); 1002 } 1003 return NULL; 1004WB_END 1005 1006WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 1007 uintx result; 1008 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) { 1009 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1010 return longBox(thread, env, result); 1011 } 1012 return NULL; 1013WB_END 1014 1015WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 1016 uint64_t result; 1017 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) { 1018 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1019 return longBox(thread, env, result); 1020 } 1021 return NULL; 1022WB_END 1023 1024WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 1025 uintx result; 1026 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) { 1027 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1028 return longBox(thread, env, result); 1029 } 1030 return NULL; 1031WB_END 1032 1033WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 1034 double result; 1035 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) { 1036 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1037 return doubleBox(thread, env, result); 1038 } 1039 return NULL; 1040WB_END 1041 1042WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 1043 ccstr ccstrResult; 1044 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) { 1045 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1046 jstring result = env->NewStringUTF(ccstrResult); 1047 CHECK_JNI_EXCEPTION_(env, NULL); 1048 return result; 1049 } 1050 return NULL; 1051WB_END 1052 1053WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 1054 bool result = value == JNI_TRUE ? true : false; 1055 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut); 1056WB_END 1057 1058WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1059 int result = value; 1060 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut); 1061WB_END 1062 1063WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1064 uint result = value; 1065 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut); 1066WB_END 1067 1068WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1069 intx result = value; 1070 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut); 1071WB_END 1072 1073WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1074 uintx result = value; 1075 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut); 1076WB_END 1077 1078WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1079 uint64_t result = value; 1080 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut); 1081WB_END 1082 1083WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 1084 size_t result = value; 1085 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut); 1086WB_END 1087 1088WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 1089 double result = value; 1090 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut); 1091WB_END 1092 1093WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 1094 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1095 const char* ccstrValue; 1096 if (value == NULL) { 1097 ccstrValue = NULL; 1098 } 1099 else { 1100 ccstrValue = env->GetStringUTFChars(value, NULL); 1101 CHECK_JNI_EXCEPTION(env); 1102 } 1103 ccstr ccstrResult = ccstrValue; 1104 bool needFree; 1105 { 1106 ThreadInVMfromNative ttvfn(thread); // back to VM 1107 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut); 1108 } 1109 if (value != NULL) { 1110 env->ReleaseStringUTFChars(value, ccstrValue); 1111 } 1112 if (needFree) { 1113 FREE_C_HEAP_ARRAY(char, ccstrResult); 1114 } 1115WB_END 1116 1117WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 1118 WhiteBox::compilation_locked = true; 1119WB_END 1120 1121WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 1122 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 1123 WhiteBox::compilation_locked = false; 1124 mo.notify_all(); 1125WB_END 1126 1127WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 1128 // Force a code cache sweep and block until it finished 1129 NMethodSweeper::force_sweep(); 1130WB_END 1131 1132WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 1133 ResourceMark rm(THREAD); 1134 int len; 1135 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 1136 return (StringTable::lookup(name, len) != NULL); 1137WB_END 1138 1139WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 1140 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true); 1141 Universe::heap()->collect(GCCause::_wb_full_gc); 1142#if INCLUDE_ALL_GCS 1143 if (UseG1GC) { 1144 // Needs to be cleared explicitly for G1 1145 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false); 1146 } 1147#endif // INCLUDE_ALL_GCS 1148WB_END 1149 1150WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1151 Universe::heap()->collect(GCCause::_wb_young_gc); 1152WB_END 1153 1154WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1155 // static+volatile in order to force the read to happen 1156 // (not be eliminated by the compiler) 1157 static char c; 1158 static volatile char* p; 1159 1160 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 1161 if (p == NULL) { 1162 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1163 } 1164 1165 c = *p; 1166WB_END 1167 1168WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1169 const char* features = VM_Version::features_string(); 1170 ThreadToNativeFromVM ttn(thread); 1171 jstring features_string = env->NewStringUTF(features); 1172 1173 CHECK_JNI_EXCEPTION_(env, NULL); 1174 1175 return features_string; 1176WB_END 1177 1178int WhiteBox::get_blob_type(const CodeBlob* code) { 1179 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1180 if (code->is_aot()) { 1181 return -1; 1182 } 1183 return CodeCache::get_code_heap(code)->code_blob_type(); 1184} 1185 1186CodeHeap* WhiteBox::get_code_heap(int blob_type) { 1187 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1188 return CodeCache::get_code_heap(blob_type); 1189} 1190 1191struct CodeBlobStub { 1192 CodeBlobStub(const CodeBlob* blob) : 1193 name(os::strdup(blob->name())), 1194 size(blob->size()), 1195 blob_type(WhiteBox::get_blob_type(blob)), 1196 address((jlong) blob) { } 1197 ~CodeBlobStub() { os::free((void*) name); } 1198 const char* const name; 1199 const jint size; 1200 const jint blob_type; 1201 const jlong address; 1202}; 1203 1204static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1205 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1206 CHECK_JNI_EXCEPTION_(env, NULL); 1207 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1208 1209 jstring name = env->NewStringUTF(cb->name); 1210 CHECK_JNI_EXCEPTION_(env, NULL); 1211 env->SetObjectArrayElement(result, 0, name); 1212 1213 jobject obj = integerBox(thread, env, cb->size); 1214 CHECK_JNI_EXCEPTION_(env, NULL); 1215 env->SetObjectArrayElement(result, 1, obj); 1216 1217 obj = integerBox(thread, env, cb->blob_type); 1218 CHECK_JNI_EXCEPTION_(env, NULL); 1219 env->SetObjectArrayElement(result, 2, obj); 1220 1221 obj = longBox(thread, env, cb->address); 1222 CHECK_JNI_EXCEPTION_(env, NULL); 1223 env->SetObjectArrayElement(result, 3, obj); 1224 1225 return result; 1226} 1227 1228WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1229 ResourceMark rm(THREAD); 1230 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1231 CHECK_JNI_EXCEPTION_(env, NULL); 1232 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1233 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1234 jobjectArray result = NULL; 1235 if (code == NULL) { 1236 return result; 1237 } 1238 int comp_level = code->comp_level(); 1239 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size(); 1240 1241 ThreadToNativeFromVM ttn(thread); 1242 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1243 CHECK_JNI_EXCEPTION_(env, NULL); 1244 result = env->NewObjectArray(5, clazz, NULL); 1245 if (result == NULL) { 1246 return result; 1247 } 1248 1249 CodeBlobStub stub(code); 1250 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1251 CHECK_JNI_EXCEPTION_(env, NULL); 1252 env->SetObjectArrayElement(result, 0, codeBlob); 1253 1254 jobject level = integerBox(thread, env, comp_level); 1255 CHECK_JNI_EXCEPTION_(env, NULL); 1256 env->SetObjectArrayElement(result, 1, level); 1257 1258 jbyteArray insts = env->NewByteArray(insts_size); 1259 CHECK_JNI_EXCEPTION_(env, NULL); 1260 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1261 env->SetObjectArrayElement(result, 2, insts); 1262 1263 jobject id = integerBox(thread, env, code->compile_id()); 1264 CHECK_JNI_EXCEPTION_(env, NULL); 1265 env->SetObjectArrayElement(result, 3, id); 1266 1267 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1268 CHECK_JNI_EXCEPTION_(env, NULL); 1269 env->SetObjectArrayElement(result, 4, entry_point); 1270 1271 return result; 1272WB_END 1273 1274CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1275 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1276 BufferBlob* blob; 1277 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1278 if (full_size < size) { 1279 full_size += round_to(size - full_size, oopSize); 1280 } 1281 { 1282 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1283 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1284 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1285 } 1286 // Track memory usage statistic after releasing CodeCache_lock 1287 MemoryService::track_code_cache_memory_usage(); 1288 return blob; 1289} 1290 1291WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1292 if (size < 0) { 1293 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1294 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1295 } 1296 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1297WB_END 1298 1299WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1300 if (addr == 0) { 1301 return; 1302 } 1303 BufferBlob::free((BufferBlob*) addr); 1304WB_END 1305 1306WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1307 ResourceMark rm; 1308 GrowableArray<CodeBlobStub*> blobs; 1309 { 1310 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1311 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1312 if (heap == NULL) { 1313 return NULL; 1314 } 1315 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1316 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1317 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1318 new (stub) CodeBlobStub(cb); 1319 blobs.append(stub); 1320 } 1321 } 1322 if (blobs.length() == 0) { 1323 return NULL; 1324 } 1325 ThreadToNativeFromVM ttn(thread); 1326 jobjectArray result = NULL; 1327 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1328 CHECK_JNI_EXCEPTION_(env, NULL); 1329 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1330 CHECK_JNI_EXCEPTION_(env, NULL); 1331 if (result == NULL) { 1332 return result; 1333 } 1334 int i = 0; 1335 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1336 it != blobs.end(); ++it) { 1337 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1338 CHECK_JNI_EXCEPTION_(env, NULL); 1339 env->SetObjectArrayElement(result, i, obj); 1340 CHECK_JNI_EXCEPTION_(env, NULL); 1341 ++i; 1342 } 1343 return result; 1344WB_END 1345 1346WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1347 return CompileBroker::get_compilation_activity_mode(); 1348WB_END 1349 1350WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1351 if (addr == 0) { 1352 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1353 "WB_GetCodeBlob: addr is null"); 1354 } 1355 ThreadToNativeFromVM ttn(thread); 1356 CodeBlobStub stub((CodeBlob*) addr); 1357 return codeBlob2objectArray(thread, env, &stub); 1358WB_END 1359 1360WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1361 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1362 CHECK_JNI_EXCEPTION_(env, 0); 1363 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1364 return (jlong) mh->method_data(); 1365WB_END 1366 1367WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1368 return (jlong) Thread::current()->stack_size(); 1369WB_END 1370 1371WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1372 JavaThread* t = JavaThread::current(); 1373 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size(); 1374WB_END 1375 1376 1377int WhiteBox::array_bytes_to_length(size_t bytes) { 1378 return Array<u1>::bytes_to_length(bytes); 1379} 1380 1381WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1382 if (size < 0) { 1383 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1384 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1385 } 1386 1387 oop class_loader_oop = JNIHandles::resolve(class_loader); 1388 ClassLoaderData* cld = class_loader_oop != NULL 1389 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1390 : ClassLoaderData::the_null_class_loader_data(); 1391 1392 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1393 1394 return (jlong)(uintptr_t)metadata; 1395WB_END 1396 1397WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 1398 oop class_loader_oop = JNIHandles::resolve(class_loader); 1399 ClassLoaderData* cld = class_loader_oop != NULL 1400 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1401 : ClassLoaderData::the_null_class_loader_data(); 1402 1403 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 1404WB_END 1405 1406WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jstring version, jstring location, 1407 jobjectArray packages)) 1408 ResourceMark rm(THREAD); 1409 1410 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages)); 1411 objArrayHandle packages_h(THREAD, packages_oop); 1412 int num_packages = (packages_h == NULL ? 0 : packages_h->length()); 1413 1414 char** pkgs = NULL; 1415 if (num_packages > 0) { 1416 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages); 1417 for (int x = 0; x < num_packages; x++) { 1418 oop pkg_str = packages_h->obj_at(x); 1419 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) { 1420 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 1421 err_msg("Bad package name")); 1422 } 1423 pkgs[x] = java_lang_String::as_utf8_string(pkg_str); 1424 } 1425 } 1426 Modules::define_module(module, version, location, (const char* const*)pkgs, num_packages, CHECK); 1427WB_END 1428 1429WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module)) 1430 ResourceMark rm(THREAD); 1431 char* package_name = NULL; 1432 if (package != NULL) { 1433 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1434 } 1435 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK); 1436WB_END 1437 1438WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package)) 1439 ResourceMark rm(THREAD); 1440 char* package_name = NULL; 1441 if (package != NULL) { 1442 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1443 } 1444 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK); 1445WB_END 1446 1447WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package)) 1448 ResourceMark rm(THREAD); 1449 char* package_name = NULL; 1450 if (package != NULL) { 1451 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1452 } 1453 Modules::add_module_exports(module, package_name, NULL, CHECK); 1454WB_END 1455 1456WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module)) 1457 Modules::add_reads_module(from_module, source_module, CHECK); 1458WB_END 1459 1460WB_ENTRY(jobject, WB_GetModuleByPackageName(JNIEnv* env, jobject o, jobject loader, jstring package)) 1461 ResourceMark rm(THREAD); 1462 char* package_name = NULL; 1463 if (package != NULL) { 1464 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); 1465 } 1466 return Modules::get_module_by_package_name(loader, package_name, THREAD); 1467WB_END 1468 1469WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1470 if (inc < 0) { 1471 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1472 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1473 } 1474 1475 jlong max_size_t = (jlong) ((size_t) -1); 1476 if (inc > max_size_t) { 1477 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1478 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1479 } 1480 1481 size_t new_cap_until_GC = 0; 1482 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment()); 1483 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1484 if (!success) { 1485 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1486 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1487 "due to contention with another thread"); 1488 } 1489 return (jlong) new_cap_until_GC; 1490WB_END 1491 1492WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1493 return (jlong) MetaspaceGC::capacity_until_GC(); 1494WB_END 1495 1496WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb)) 1497 return MetaspaceGC::should_concurrent_collect(); 1498WB_END 1499 1500 1501WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue)) 1502 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ? 1503 Monitor::_safepoint_check_always : 1504 Monitor::_safepoint_check_never; 1505 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required), 1506 attemptedNoSafepointValue == JNI_TRUE); 1507WB_END 1508 1509WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1510 oop obj_oop = JNIHandles::resolve(obj); 1511 return (jboolean) obj_oop->mark()->has_monitor(); 1512WB_END 1513 1514WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1515 VM_ForceSafepoint force_safepoint_op; 1516 VMThread::execute(&force_safepoint_op); 1517WB_END 1518 1519WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1520 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1521 return (jlong) ikh->constants(); 1522WB_END 1523 1524WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb)) 1525 return ConstantPool::CPCACHE_INDEX_TAG; 1526WB_END 1527 1528WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass)) 1529 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1530 ConstantPool* cp = ikh->constants(); 1531 if (cp->cache() == NULL) { 1532 return -1; 1533 } 1534 return cp->cache()->length(); 1535WB_END 1536 1537WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index)) 1538 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1539 ConstantPool* cp = ikh->constants(); 1540 if (cp->cache() == NULL) { 1541 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache"); 1542 } 1543 jint cpci = index; 1544 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG; 1545 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) { 1546 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range"); 1547 } 1548 jint cpi = cp->remap_instruction_operand_from_cache(cpci); 1549 return cpi; 1550WB_END 1551 1552WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index)) 1553 return ConstantPool::encode_invokedynamic_index(index); 1554WB_END 1555 1556WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs)) 1557 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE); 1558 VMThread::execute(&clear_ics); 1559WB_END 1560 1561template <typename T> 1562static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1563 assert(value != NULL, "sanity"); 1564 if (method == NULL || name == NULL) { 1565 return false; 1566 } 1567 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1568 CHECK_JNI_EXCEPTION_(env, false); 1569 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1570 // can't be in VM when we call JNI 1571 ThreadToNativeFromVM ttnfv(thread); 1572 const char* flag_name = env->GetStringUTFChars(name, NULL); 1573 CHECK_JNI_EXCEPTION_(env, false); 1574 bool result = CompilerOracle::has_option_value(mh, flag_name, *value); 1575 env->ReleaseStringUTFChars(name, flag_name); 1576 return result; 1577} 1578 1579WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1580 bool result; 1581 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1582 // can't be in VM when we call JNI 1583 ThreadToNativeFromVM ttnfv(thread); 1584 return booleanBox(thread, env, result); 1585 } 1586 return NULL; 1587WB_END 1588 1589WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1590 intx result; 1591 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1592 // can't be in VM when we call JNI 1593 ThreadToNativeFromVM ttnfv(thread); 1594 return longBox(thread, env, result); 1595 } 1596 return NULL; 1597WB_END 1598 1599WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1600 uintx result; 1601 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1602 // can't be in VM when we call JNI 1603 ThreadToNativeFromVM ttnfv(thread); 1604 return longBox(thread, env, result); 1605 } 1606 return NULL; 1607WB_END 1608 1609WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1610 double result; 1611 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1612 // can't be in VM when we call JNI 1613 ThreadToNativeFromVM ttnfv(thread); 1614 return doubleBox(thread, env, result); 1615 } 1616 return NULL; 1617WB_END 1618 1619WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1620 ccstr ccstrResult; 1621 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 1622 // can't be in VM when we call JNI 1623 ThreadToNativeFromVM ttnfv(thread); 1624 jstring result = env->NewStringUTF(ccstrResult); 1625 CHECK_JNI_EXCEPTION_(env, NULL); 1626 return result; 1627 } 1628 return NULL; 1629WB_END 1630 1631WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 1632 oop obj_oop = JNIHandles::resolve(obj); 1633 return MetaspaceShared::is_in_shared_space((void*)obj_oop); 1634WB_END 1635 1636WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 1637 return (jboolean)MetaspaceShared::is_in_shared_space(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1638WB_END 1639 1640WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env)) 1641 return StringTable::shared_string_ignored(); 1642WB_END 1643 1644//Some convenience methods to deal with objects from java 1645int WhiteBox::offset_for_field(const char* field_name, oop object, 1646 Symbol* signature_symbol) { 1647 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 1648 Thread* THREAD = Thread::current(); 1649 1650 //Get the class of our object 1651 Klass* arg_klass = object->klass(); 1652 //Turn it into an instance-klass 1653 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 1654 1655 //Create symbols to look for in the class 1656 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), 1657 THREAD); 1658 1659 //To be filled in with an offset of the field we're looking for 1660 fieldDescriptor fd; 1661 1662 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 1663 if (res == NULL) { 1664 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 1665 name_symbol->as_C_string()); 1666 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class"); 1667 } 1668 1669 //fetch the field at the offset we've found 1670 int dest_offset = fd.offset(); 1671 1672 return dest_offset; 1673} 1674 1675 1676const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 1677 int offset = offset_for_field(field_name, object, 1678 vmSymbols::string_signature()); 1679 oop string = object->obj_field(offset); 1680 if (string == NULL) { 1681 return NULL; 1682 } 1683 const char* ret = java_lang_String::as_utf8_string(string); 1684 return ret; 1685} 1686 1687bool WhiteBox::lookup_bool(const char* field_name, oop object) { 1688 int offset = 1689 offset_for_field(field_name, object, vmSymbols::bool_signature()); 1690 bool ret = (object->bool_field(offset) == JNI_TRUE); 1691 return ret; 1692} 1693 1694void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 1695 ResourceMark rm; 1696 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1697 1698 // one by one registration natives for exception catching 1699 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 1700 CHECK_JNI_EXCEPTION(env); 1701 for (int i = 0, n = method_count; i < n; ++i) { 1702 // Skip dummy entries 1703 if (method_array[i].fnPtr == NULL) continue; 1704 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 1705 jthrowable throwable_obj = env->ExceptionOccurred(); 1706 if (throwable_obj != NULL) { 1707 env->ExceptionClear(); 1708 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 1709 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 1710 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 1711 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 1712 method_array[i].name, method_array[i].signature); 1713 } 1714 } else { 1715 // Registration failed unexpectedly. 1716 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 1717 method_array[i].name, method_array[i].signature); 1718 env->UnregisterNatives(wbclass); 1719 break; 1720 } 1721 } 1722 } 1723} 1724 1725WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect)) 1726 // can't be in VM when we call JNI 1727 ThreadToNativeFromVM ttnfv(thread); 1728 const char* dir = env->GetStringUTFChars(compDirect, NULL); 1729 CHECK_JNI_EXCEPTION_(env, 0); 1730 int ret; 1731 { 1732 ThreadInVMfromNative ttvfn(thread); // back to VM 1733 ret = DirectivesParser::parse_string(dir, tty); 1734 } 1735 env->ReleaseStringUTFChars(compDirect, dir); 1736 // -1 for error parsing directive. Return 0 as number of directives added. 1737 if (ret == -1) { 1738 ret = 0; 1739 } 1740 return (jint) ret; 1741WB_END 1742 1743WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count)) 1744 DirectivesStack::pop(count); 1745WB_END 1746 1747#define CC (char*) 1748 1749static JNINativeMethod methods[] = { 1750 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 1751 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 1752 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 1753 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 1754 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 1755 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 1756 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 1757 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 1758 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment}, 1759 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, 1760 {CC"parseCommandLine0", 1761 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 1762 (void*) &WB_ParseCommandLine 1763 }, 1764 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1765 (void*)&WB_AddToBootstrapClassLoaderSearch}, 1766 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1767 (void*)&WB_AddToSystemClassLoaderSearch}, 1768 {CC"getCompressedOopsMaxHeapSize", CC"()J", 1769 (void*)&WB_GetCompressedOopsMaxHeapSize}, 1770 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 1771 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 1772 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 1773 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 1774#if INCLUDE_ALL_GCS 1775 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 1776 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 1777 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 1778 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 1779 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 1780 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 1781 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 1782 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 1783 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 1784 (void*)&WB_G1AuxiliaryMemoryUsage }, 1785 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 1786 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 1787 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo }, 1788#endif // INCLUDE_ALL_GCS 1789#if INCLUDE_NMT 1790 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 1791 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 1792 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 1793 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 1794 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 1795 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 1796 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 1797 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 1798 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 1799#endif // INCLUDE_NMT 1800 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 1801 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 1802 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 1803 (void*)&WB_DeoptimizeMethod }, 1804 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 1805 (void*)&WB_IsMethodCompiled }, 1806 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 1807 (void*)&WB_IsMethodCompilable}, 1808 {CC"isMethodQueuedForCompilation0", 1809 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 1810 {CC"isIntrinsicAvailable0", 1811 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 1812 (void*)&WB_IsIntrinsicAvailable}, 1813 {CC"makeMethodNotCompilable0", 1814 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 1815 {CC"testSetDontInlineMethod0", 1816 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 1817 {CC"getMethodCompilationLevel0", 1818 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 1819 {CC"getMethodEntryBci0", 1820 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 1821 {CC"getCompileQueueSize", 1822 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 1823 {CC"testSetForceInlineMethod0", 1824 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 1825 {CC"enqueueMethodForCompilation0", 1826 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 1827 {CC"enqueueInitializerForCompilation0", 1828 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation}, 1829 {CC"clearMethodState0", 1830 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 1831 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 1832 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 1833 {CC"matchesMethod", 1834 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 1835 (void*)&WB_MatchesMethod}, 1836 {CC"matchesInline", 1837 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 1838 (void*)&WB_MatchesInline}, 1839 {CC"shouldPrintAssembly", 1840 CC"(Ljava/lang/reflect/Executable;I)Z", 1841 (void*)&WB_ShouldPrintAssembly}, 1842 1843 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 1844 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 1845 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 1846 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 1847 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 1848 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 1849 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 1850 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 1851 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 1852 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 1853 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 1854 (void*)&WB_SetStringVMFlag}, 1855 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 1856 (void*)&WB_GetBooleanVMFlag}, 1857 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1858 (void*)&WB_GetIntVMFlag}, 1859 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1860 (void*)&WB_GetUintVMFlag}, 1861 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1862 (void*)&WB_GetIntxVMFlag}, 1863 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1864 (void*)&WB_GetUintxVMFlag}, 1865 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1866 (void*)&WB_GetUint64VMFlag}, 1867 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1868 (void*)&WB_GetSizeTVMFlag}, 1869 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 1870 (void*)&WB_GetDoubleVMFlag}, 1871 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 1872 (void*)&WB_GetStringVMFlag}, 1873 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 1874 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 1875 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 1876 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 1877 {CC"allocateMetaspace", 1878 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 1879 {CC"freeMetaspace", 1880 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 1881 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 1882 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 1883 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect }, 1884 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 1885 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 1886 (void*)&WB_GetNMethod }, 1887 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 1888 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 1889 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 1890 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 1891 {CC"getCompilationActivityMode", 1892 CC"()I", (void*)&WB_GetCompilationActivityMode}, 1893 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 1894 (void*)&WB_GetMethodData }, 1895 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 1896 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 1897 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 1898 {CC"DefineModule", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V", 1899 (void*)&WB_DefineModule }, 1900 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", 1901 (void*)&WB_AddModuleExports }, 1902 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V", 1903 (void*)&WB_AddReadsModule }, 1904 {CC"GetModuleByPackageName", CC"(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;", 1905 (void*)&WB_GetModuleByPackageName }, 1906 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 1907 (void*)&WB_AddModuleExportsToAllUnnamed }, 1908 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V", 1909 (void*)&WB_AddModuleExportsToAll }, 1910 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls }, 1911 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 1912 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 1913 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 1914 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag}, 1915 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength}, 1916 {CC"remapInstructionOperandFromCPCache0", 1917 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache}, 1918 {CC"encodeConstantPoolIndyIndex0", 1919 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex}, 1920 {CC"getMethodBooleanOption", 1921 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 1922 (void*)&WB_GetMethodBooleaneOption}, 1923 {CC"getMethodIntxOption", 1924 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 1925 (void*)&WB_GetMethodIntxOption}, 1926 {CC"getMethodUintxOption", 1927 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 1928 (void*)&WB_GetMethodUintxOption}, 1929 {CC"getMethodDoubleOption", 1930 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 1931 (void*)&WB_GetMethodDoubleOption}, 1932 {CC"getMethodStringOption", 1933 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 1934 (void*)&WB_GetMethodStringOption}, 1935 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 1936 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 1937 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored }, 1938 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches }, 1939 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I", 1940 (void*)&WB_AddCompilerDirective }, 1941 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective }, 1942 {CC"currentGC", CC"()I", (void*)&WB_CurrentGC}, 1943 {CC"allSupportedGC", CC"()I", (void*)&WB_AllSupportedGC}, 1944 {CC"gcSelectedByErgo", CC"()Z", (void*)&WB_GCSelectedByErgo}, 1945}; 1946 1947#undef CC 1948 1949JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 1950 { 1951 if (WhiteBoxAPI) { 1952 // Make sure that wbclass is loaded by the null classloader 1953 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass()); 1954 Handle loader(ikh->class_loader()); 1955 if (loader.is_null()) { 1956 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 1957 WhiteBox::register_extended(env, wbclass, thread); 1958 WhiteBox::set_used(); 1959 } 1960 } 1961 } 1962JVM_END 1963