1 /* 2 * Copyright (c) 2012, 2015, 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/stringTable.hpp" 31 #include "code/codeCache.hpp" 32 #include "compiler/methodMatcher.hpp" 33 #include "jvmtifiles/jvmtiEnv.hpp" 34 #include "memory/metadataFactory.hpp" 35 #include "memory/metaspaceShared.hpp" 36 #include "memory/universe.hpp" 37 #include "oops/oop.inline.hpp" 38 #include "prims/wbtestmethods/parserTests.hpp" 39 #include "prims/whitebox.hpp" 40 #include "runtime/arguments.hpp" 41 #include "runtime/compilationPolicy.hpp" 42 #include "runtime/deoptimization.hpp" 43 #include "runtime/interfaceSupport.hpp" 44 #include "runtime/javaCalls.hpp" 45 #include "runtime/os.hpp" 46 #include "runtime/sweeper.hpp" 47 #include "runtime/thread.hpp" 48 #include "runtime/vm_version.hpp" 49 #include "utilities/array.hpp" 50 #include "utilities/debug.hpp" 51 #include "utilities/exceptions.hpp" 52 #include "utilities/macros.hpp" 53 #if INCLUDE_ALL_GCS 54 #include "gc/g1/concurrentMark.hpp" 55 #include "gc/g1/concurrentMarkThread.hpp" 56 #include "gc/g1/g1CollectedHeap.inline.hpp" 57 #include "gc/g1/heapRegionRemSet.hpp" 58 #include "gc/parallel/parallelScavengeHeap.inline.hpp" 59 #include "gc/parallel/adjoiningGenerations.hpp" 60 #endif // INCLUDE_ALL_GCS 61 #if INCLUDE_NMT 62 #include "services/mallocSiteTable.hpp" 63 #include "services/memTracker.hpp" 64 #include "utilities/nativeCallStack.hpp" 65 #endif // INCLUDE_NMT 66 67 68 #define SIZE_T_MAX_VALUE ((size_t) -1) 69 70 bool WhiteBox::_used = false; 71 volatile bool WhiteBox::compilation_locked = false; 72 73 class VM_WhiteBoxOperation : public VM_Operation { 74 public: 75 VM_WhiteBoxOperation() { } 76 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 77 bool allow_nested_vm_operations() const { return true; } 78 }; 79 80 81 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 82 return (jlong)(void*)JNIHandles::resolve(obj); 83 WB_END 84 85 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 86 return heapOopSize; 87 WB_END 88 89 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 90 return os::vm_page_size(); 91 WB_END 92 93 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o)) 94 return os::vm_allocation_granularity(); 95 WB_END 96 97 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 98 return os::large_page_size(); 99 WB_END 100 101 class WBIsKlassAliveClosure : public KlassClosure { 102 Symbol* _name; 103 bool _found; 104 public: 105 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} 106 107 void do_klass(Klass* k) { 108 if (_found) return; 109 Symbol* ksym = k->name(); 110 if (ksym->fast_compare(_name) == 0) { 111 _found = true; 112 } 113 } 114 115 bool found() const { 116 return _found; 117 } 118 }; 119 120 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) 121 Handle h_name = JNIHandles::resolve(name); 122 if (h_name.is_null()) return false; 123 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false); 124 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 125 126 WBIsKlassAliveClosure closure(sym); 127 ClassLoaderDataGraph::classes_do(&closure); 128 129 return closure.found(); 130 WB_END 131 132 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 133 #if INCLUDE_JVMTI 134 ResourceMark rm; 135 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 136 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 137 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 138 assert(err == JVMTI_ERROR_NONE, "must not fail"); 139 #endif 140 } 141 WB_END 142 143 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 144 #if INCLUDE_JVMTI 145 ResourceMark rm; 146 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 147 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 148 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 149 assert(err == JVMTI_ERROR_NONE, "must not fail"); 150 #endif 151 } 152 WB_END 153 154 155 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 156 return (jlong)Arguments::max_heap_for_compressed_oops(); 157 } 158 WB_END 159 160 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 161 CollectorPolicy * p = Universe::heap()->collector_policy(); 162 gclog_or_tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " 163 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT, 164 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(), 165 p->space_alignment(), p->heap_alignment()); 166 } 167 WB_END 168 169 #ifndef PRODUCT 170 // Forward declaration 171 void TestReservedSpace_test(); 172 void TestReserveMemorySpecial_test(); 173 void TestVirtualSpace_test(); 174 void TestMetaspaceAux_test(); 175 #endif 176 177 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) 178 #ifndef PRODUCT 179 TestReservedSpace_test(); 180 TestReserveMemorySpecial_test(); 181 TestVirtualSpace_test(); 182 TestMetaspaceAux_test(); 183 #endif 184 WB_END 185 186 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 187 size_t granularity = os::vm_allocation_granularity(); 188 ReservedHeapSpace rhs(100 * granularity, granularity, false); 189 VirtualSpace vs; 190 vs.initialize(rhs, 50 * granularity); 191 192 // Check if constraints are complied 193 if (!( UseCompressedOops && rhs.base() != NULL && 194 Universe::narrow_oop_base() != NULL && 195 Universe::narrow_oop_use_implicit_null_checks() )) { 196 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 197 "\tUseCompressedOops is %d\n" 198 "\trhs.base() is " PTR_FORMAT "\n" 199 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n" 200 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d", 201 UseCompressedOops, 202 p2i(rhs.base()), 203 p2i(Universe::narrow_oop_base()), 204 Universe::narrow_oop_use_implicit_null_checks()); 205 return; 206 } 207 tty->print_cr("Reading from no access area... "); 208 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 209 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 210 WB_END 211 212 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 213 size_t magnitude, size_t iterations) { 214 size_t granularity = os::vm_allocation_granularity(); 215 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false); 216 VirtualSpace vs; 217 if (!vs.initialize(rhs, 0)) { 218 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 219 return 3; 220 } 221 222 long seed = os::random(); 223 tty->print_cr("Random seed is %ld", seed); 224 os::init_random(seed); 225 226 for (size_t i = 0; i < iterations; i++) { 227 228 // Whether we will shrink or grow 229 bool shrink = os::random() % 2L == 0; 230 231 // Get random delta to resize virtual space 232 size_t delta = (size_t)os::random() % magnitude; 233 234 // If we are about to shrink virtual space below zero, then expand instead 235 if (shrink && vs.committed_size() < delta) { 236 shrink = false; 237 } 238 239 // Resizing by delta 240 if (shrink) { 241 vs.shrink_by(delta); 242 } else { 243 // If expanding fails expand_by will silently return false 244 vs.expand_by(delta, true); 245 } 246 } 247 return 0; 248 } 249 250 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 251 jlong reserved_space_size, jlong magnitude, jlong iterations)) 252 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", " 253 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude, 254 iterations); 255 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 256 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 257 return 1; 258 } 259 260 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 261 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 262 if (sizeof(size_t) < sizeof(jlong)) { 263 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; 264 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 265 || iterations > size_t_max_value) { 266 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 267 return 2; 268 } 269 } 270 271 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 272 (size_t) magnitude, (size_t) iterations); 273 WB_END 274 275 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 276 oop p = JNIHandles::resolve(obj); 277 #if INCLUDE_ALL_GCS 278 if (UseG1GC) { 279 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 280 const HeapRegion* hr = g1->heap_region_containing(p); 281 if (hr == NULL) { 282 return false; 283 } 284 return !(hr->is_young()); 285 } else if (UseParallelGC) { 286 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 287 return !psh->is_in_young(p); 288 } 289 #endif // INCLUDE_ALL_GCS 290 GenCollectedHeap* gch = GenCollectedHeap::heap(); 291 return !gch->is_in_young(p); 292 WB_END 293 294 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 295 oop p = JNIHandles::resolve(obj); 296 return p->size() * HeapWordSize; 297 WB_END 298 299 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o)) 300 size_t alignment = Universe::heap()->collector_policy()->space_alignment(); 301 return (jlong)alignment; 302 WB_END 303 304 #if INCLUDE_ALL_GCS 305 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 306 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 307 oop result = JNIHandles::resolve(obj); 308 const HeapRegion* hr = g1->heap_region_containing(result); 309 return hr->is_humongous(); 310 WB_END 311 312 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 313 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 314 size_t nr = g1->max_regions(); 315 return (jlong)nr; 316 WB_END 317 318 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 319 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 320 size_t nr = g1->num_free_regions(); 321 return (jlong)nr; 322 WB_END 323 324 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 325 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 326 return g1->concurrent_mark()->cmThread()->during_cycle(); 327 WB_END 328 329 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o)) 330 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 331 if (!g1h->concurrent_mark()->cmThread()->during_cycle()) { 332 g1h->collect(GCCause::_wb_conc_mark); 333 return true; 334 } 335 return false; 336 WB_END 337 338 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 339 return (jint)HeapRegion::GrainBytes; 340 WB_END 341 342 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 343 ParallelScavengeHeap* ps = ParallelScavengeHeap::heap(); 344 size_t alignment = ps->gens()->virtual_spaces()->alignment(); 345 return (jlong)alignment; 346 WB_END 347 348 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 349 size_t alignment = ParallelScavengeHeap::heap()->generation_alignment(); 350 return (jlong)alignment; 351 WB_END 352 353 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 354 ResourceMark rm(THREAD); 355 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 356 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 357 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 358 return JNIHandles::make_local(env, h()); 359 WB_END 360 #endif // INCLUDE_ALL_GCS 361 362 #if INCLUDE_NMT 363 // Alloc memory using the test memory type so that we can use that to see if 364 // NMT picks it up correctly 365 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 366 jlong addr = 0; 367 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 368 return addr; 369 WB_END 370 371 // Alloc memory with pseudo call stack. The test can create psudo malloc 372 // allocation site to stress the malloc tracking. 373 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 374 address pc = (address)(size_t)pseudo_stack; 375 NativeCallStack stack(&pc, 1); 376 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 377 WB_END 378 379 // Free the memory allocated by NMTAllocTest 380 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 381 os::free((void*)(uintptr_t)mem); 382 WB_END 383 384 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 385 jlong addr = 0; 386 387 addr = (jlong)(uintptr_t)os::reserve_memory(size); 388 MemTracker::record_virtual_memory_type((address)addr, mtTest); 389 390 return addr; 391 WB_END 392 393 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 394 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 395 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 396 WB_END 397 398 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 399 os::uncommit_memory((char *)(uintptr_t)addr, size); 400 WB_END 401 402 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 403 os::release_memory((char *)(uintptr_t)addr, size); 404 WB_END 405 406 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env)) 407 // Test that we can downgrade NMT levels but not upgrade them. 408 if (MemTracker::tracking_level() == NMT_off) { 409 MemTracker::transition_to(NMT_off); 410 return MemTracker::tracking_level() == NMT_off; 411 } else { 412 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking"); 413 MemTracker::transition_to(NMT_summary); 414 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now"); 415 416 // Can't go to detail once NMT is set to summary. 417 MemTracker::transition_to(NMT_detail); 418 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now"); 419 420 // Shutdown sets tracking level to minimal. 421 MemTracker::shutdown(); 422 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); 423 424 // Once the tracking level is minimal, we cannot increase to summary. 425 // The code ignores this request instead of asserting because if the malloc site 426 // table overflows in another thread, it tries to change the code to summary. 427 MemTracker::transition_to(NMT_summary); 428 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 429 430 // Really can never go up to detail, verify that the code would never do this. 431 MemTracker::transition_to(NMT_detail); 432 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 433 return MemTracker::tracking_level() == NMT_minimal; 434 } 435 WB_END 436 437 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 438 int hash_size = MallocSiteTable::hash_buckets(); 439 assert(hash_size > 0, "NMT hash_size should be > 0"); 440 return (jint)hash_size; 441 WB_END 442 #endif // INCLUDE_NMT 443 444 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 445 assert(method != NULL, "method should not be null"); 446 ThreadToNativeFromVM ttn(thread); 447 return env->FromReflectedMethod(method); 448 } 449 450 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 451 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 452 private: 453 int _result; 454 const bool _make_not_entrant; 455 public: 456 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 457 _result(0), _make_not_entrant(make_not_entrant) { } 458 int result() const { return _result; } 459 460 void doit() { 461 for (JavaThread* t = Threads::first(); t != NULL; t = t->next()) { 462 if (t->has_last_Java_frame()) { 463 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) { 464 frame* f = fst.current(); 465 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 466 RegisterMap* reg_map = fst.register_map(); 467 Deoptimization::deoptimize(t, *f, reg_map); 468 if (_make_not_entrant) { 469 nmethod* nm = CodeCache::find_nmethod(f->pc()); 470 assert(nm != NULL, "sanity check"); 471 nm->make_not_entrant(); 472 } 473 ++_result; 474 } 475 } 476 } 477 } 478 } 479 }; 480 481 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 482 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 483 VMThread::execute(&op); 484 return op.result(); 485 WB_END 486 487 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 488 MutexLockerEx mu(Compile_lock); 489 CodeCache::mark_all_nmethods_for_deoptimization(); 490 VM_Deoptimize op; 491 VMThread::execute(&op); 492 WB_END 493 494 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 495 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 496 int result = 0; 497 CHECK_JNI_EXCEPTION_(env, result); 498 MutexLockerEx mu(Compile_lock); 499 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 500 if (is_osr) { 501 result += mh->mark_osr_nmethods(); 502 } else if (mh->code() != NULL) { 503 mh->code()->mark_for_deoptimization(); 504 ++result; 505 } 506 result += CodeCache::mark_for_deoptimization(mh()); 507 if (result > 0) { 508 VM_Deoptimize op; 509 VMThread::execute(&op); 510 } 511 return result; 512 WB_END 513 514 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 515 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 516 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 517 MutexLockerEx mu(Compile_lock); 518 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 519 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 520 if (code == NULL) { 521 return JNI_FALSE; 522 } 523 return (code->is_alive() && !code->is_marked_for_deoptimization()); 524 WB_END 525 526 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 527 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 528 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 529 MutexLockerEx mu(Compile_lock); 530 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 531 if (is_osr) { 532 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); 533 } else { 534 return CompilationPolicy::can_be_compiled(mh, comp_level); 535 } 536 WB_END 537 538 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 539 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 540 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 541 MutexLockerEx mu(Compile_lock); 542 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 543 return mh->queued_for_compilation(); 544 WB_END 545 546 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 547 if (compLevel < CompLevel_none || compLevel > CompLevel_highest_tier) { 548 return false; // Intrinsic is not available on a non-existent compilation level. 549 } 550 jmethodID method_id, compilation_context_id; 551 method_id = reflected_method_to_jmid(thread, env, method); 552 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 553 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 554 if (compilation_context != NULL) { 555 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 556 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 557 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 558 return CompileBroker::compiler(compLevel)->is_intrinsic_available(mh, cch); 559 } else { 560 return CompileBroker::compiler(compLevel)->is_intrinsic_available(mh, NULL); 561 } 562 WB_END 563 564 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 565 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 566 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 567 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 568 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 569 return (code != NULL ? code->comp_level() : CompLevel_none); 570 WB_END 571 572 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 573 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 574 CHECK_JNI_EXCEPTION(env); 575 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 576 if (is_osr) { 577 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox"); 578 } else { 579 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); 580 } 581 WB_END 582 583 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 584 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 585 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 586 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 587 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 588 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 589 WB_END 590 591 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 592 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 593 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 594 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 595 bool result = mh->dont_inline(); 596 mh->set_dont_inline(value == JNI_TRUE); 597 return result; 598 WB_END 599 600 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 601 if (comp_level == CompLevel_any) { 602 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 603 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 604 } else { 605 return CompileBroker::queue_size(comp_level); 606 } 607 WB_END 608 609 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 610 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 611 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 612 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 613 bool result = mh->force_inline(); 614 mh->set_force_inline(value == JNI_TRUE); 615 return result; 616 WB_END 617 618 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 619 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 620 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 621 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 622 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD); 623 MutexLockerEx mu(Compile_lock); 624 return (mh->queued_for_compilation() || nm != NULL); 625 WB_END 626 627 628 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 629 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 630 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 631 632 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 633 634 ResourceMark rm; 635 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 636 637 const char* error_msg = NULL; 638 639 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg); 640 if (m == NULL) { 641 assert(error_msg != NULL, "Must have error_msg"); 642 tty->print_cr("Got error: %s", error_msg); 643 return -1; 644 } 645 646 // Pattern works - now check if it matches 647 int result = m->matches(mh); 648 delete m; 649 assert(result == 0 || result == 1, "Result out of range"); 650 return result; 651 WB_END 652 653 class AlwaysFalseClosure : public BoolObjectClosure { 654 public: 655 bool do_object_b(oop p) { return false; } 656 }; 657 658 static AlwaysFalseClosure always_false; 659 660 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 661 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 662 CHECK_JNI_EXCEPTION(env); 663 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 664 MutexLockerEx mu(Compile_lock); 665 MethodData* mdo = mh->method_data(); 666 MethodCounters* mcs = mh->method_counters(); 667 668 if (mdo != NULL) { 669 mdo->init(); 670 ResourceMark rm; 671 int arg_count = mdo->method()->size_of_parameters(); 672 for (int i = 0; i < arg_count; i++) { 673 mdo->set_arg_modified(i, 0); 674 } 675 MutexLockerEx mu(mdo->extra_data_lock()); 676 mdo->clean_method_data(&always_false); 677 } 678 679 mh->clear_not_c1_compilable(); 680 mh->clear_not_c2_compilable(); 681 mh->clear_not_c2_osr_compilable(); 682 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 683 if (mcs != NULL) { 684 mcs->backedge_counter()->init(); 685 mcs->invocation_counter()->init(); 686 mcs->set_interpreter_invocation_count(0); 687 mcs->set_interpreter_throwout_count(0); 688 689 #ifdef TIERED 690 mcs->set_rate(0.0F); 691 mh->set_prev_event_count(0); 692 mh->set_prev_time(0); 693 #endif 694 } 695 WB_END 696 697 template <typename T> 698 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) { 699 if (name == NULL) { 700 return false; 701 } 702 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 703 const char* flag_name = env->GetStringUTFChars(name, NULL); 704 Flag::Error result = (*TAt)(flag_name, value, true, true); 705 env->ReleaseStringUTFChars(name, flag_name); 706 return (result == Flag::SUCCESS); 707 } 708 709 template <typename T> 710 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) { 711 if (name == NULL) { 712 return false; 713 } 714 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 715 const char* flag_name = env->GetStringUTFChars(name, NULL); 716 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL); 717 env->ReleaseStringUTFChars(name, flag_name); 718 return (result == Flag::SUCCESS); 719 } 720 721 template <typename T> 722 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 723 ResourceMark rm(thread); 724 jclass clazz = env->FindClass(name->as_C_string()); 725 CHECK_JNI_EXCEPTION_(env, NULL); 726 jmethodID methodID = env->GetStaticMethodID(clazz, 727 vmSymbols::valueOf_name()->as_C_string(), 728 sig->as_C_string()); 729 CHECK_JNI_EXCEPTION_(env, NULL); 730 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 731 CHECK_JNI_EXCEPTION_(env, NULL); 732 return result; 733 } 734 735 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 736 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 737 } 738 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 739 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 740 } 741 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 742 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 743 } 744 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 745 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 746 }*/ 747 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 748 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 749 } 750 751 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 752 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 753 const char* flag_name = env->GetStringUTFChars(name, NULL); 754 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true); 755 env->ReleaseStringUTFChars(name, flag_name); 756 return result; 757 } 758 759 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 760 Flag* flag = getVMFlag(thread, env, name); 761 return (flag != NULL) && flag->is_constant_in_binary(); 762 WB_END 763 764 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 765 Flag* flag = getVMFlag(thread, env, name); 766 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 767 WB_END 768 769 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 770 bool result; 771 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) { 772 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 773 return booleanBox(thread, env, result); 774 } 775 return NULL; 776 WB_END 777 778 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 779 int result; 780 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) { 781 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 782 return longBox(thread, env, result); 783 } 784 return NULL; 785 WB_END 786 787 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 788 uint result; 789 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) { 790 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 791 return longBox(thread, env, result); 792 } 793 return NULL; 794 WB_END 795 796 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 797 intx result; 798 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) { 799 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 800 return longBox(thread, env, result); 801 } 802 return NULL; 803 WB_END 804 805 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 806 uintx result; 807 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) { 808 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 809 return longBox(thread, env, result); 810 } 811 return NULL; 812 WB_END 813 814 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 815 uint64_t result; 816 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) { 817 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 818 return longBox(thread, env, result); 819 } 820 return NULL; 821 WB_END 822 823 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 824 uintx result; 825 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) { 826 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 827 return longBox(thread, env, result); 828 } 829 return NULL; 830 WB_END 831 832 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 833 double result; 834 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) { 835 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 836 return doubleBox(thread, env, result); 837 } 838 return NULL; 839 WB_END 840 841 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 842 ccstr ccstrResult; 843 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) { 844 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 845 jstring result = env->NewStringUTF(ccstrResult); 846 CHECK_JNI_EXCEPTION_(env, NULL); 847 return result; 848 } 849 return NULL; 850 WB_END 851 852 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 853 bool result = value == JNI_TRUE ? true : false; 854 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut); 855 WB_END 856 857 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 858 int result = value; 859 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut); 860 WB_END 861 862 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 863 uint result = value; 864 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut); 865 WB_END 866 867 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 868 intx result = value; 869 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut); 870 WB_END 871 872 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 873 uintx result = value; 874 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut); 875 WB_END 876 877 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 878 uint64_t result = value; 879 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut); 880 WB_END 881 882 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 883 size_t result = value; 884 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut); 885 WB_END 886 887 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 888 double result = value; 889 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut); 890 WB_END 891 892 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 893 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 894 const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL); 895 ccstr ccstrResult = ccstrValue; 896 bool needFree; 897 { 898 ThreadInVMfromNative ttvfn(thread); // back to VM 899 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut); 900 } 901 if (value != NULL) { 902 env->ReleaseStringUTFChars(value, ccstrValue); 903 } 904 if (needFree) { 905 FREE_C_HEAP_ARRAY(char, ccstrResult); 906 } 907 WB_END 908 909 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 910 WhiteBox::compilation_locked = true; 911 WB_END 912 913 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 914 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 915 WhiteBox::compilation_locked = false; 916 mo.notify_all(); 917 WB_END 918 919 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 920 // Force a code cache sweep and block until it finished 921 NMethodSweeper::force_sweep(); 922 WB_END 923 924 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 925 ResourceMark rm(THREAD); 926 int len; 927 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 928 return (StringTable::lookup(name, len) != NULL); 929 WB_END 930 931 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 932 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true); 933 Universe::heap()->collect(GCCause::_last_ditch_collection); 934 #if INCLUDE_ALL_GCS 935 if (UseG1GC) { 936 // Needs to be cleared explicitly for G1 937 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false); 938 } 939 #endif // INCLUDE_ALL_GCS 940 WB_END 941 942 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 943 Universe::heap()->collect(GCCause::_wb_young_gc); 944 WB_END 945 946 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 947 // static+volatile in order to force the read to happen 948 // (not be eliminated by the compiler) 949 static char c; 950 static volatile char* p; 951 952 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 953 if (p == NULL) { 954 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 955 } 956 957 c = *p; 958 WB_END 959 960 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 961 const char* cpu_features = VM_Version::cpu_features(); 962 ThreadToNativeFromVM ttn(thread); 963 jstring features_string = env->NewStringUTF(cpu_features); 964 965 CHECK_JNI_EXCEPTION_(env, NULL); 966 967 return features_string; 968 WB_END 969 970 int WhiteBox::get_blob_type(const CodeBlob* code) { 971 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 972 return CodeCache::get_code_heap(code)->code_blob_type(); 973 } 974 975 CodeHeap* WhiteBox::get_code_heap(int blob_type) { 976 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 977 return CodeCache::get_code_heap(blob_type); 978 } 979 980 struct CodeBlobStub { 981 CodeBlobStub(const CodeBlob* blob) : 982 name(os::strdup(blob->name())), 983 size(blob->size()), 984 blob_type(WhiteBox::get_blob_type(blob)) { } 985 ~CodeBlobStub() { os::free((void*) name); } 986 const char* const name; 987 const int size; 988 const int blob_type; 989 }; 990 991 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 992 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 993 CHECK_JNI_EXCEPTION_(env, NULL); 994 jobjectArray result = env->NewObjectArray(3, clazz, NULL); 995 996 jstring name = env->NewStringUTF(cb->name); 997 CHECK_JNI_EXCEPTION_(env, NULL); 998 env->SetObjectArrayElement(result, 0, name); 999 1000 jobject obj = integerBox(thread, env, cb->size); 1001 CHECK_JNI_EXCEPTION_(env, NULL); 1002 env->SetObjectArrayElement(result, 1, obj); 1003 1004 obj = integerBox(thread, env, cb->blob_type); 1005 CHECK_JNI_EXCEPTION_(env, NULL); 1006 env->SetObjectArrayElement(result, 2, obj); 1007 1008 return result; 1009 } 1010 1011 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1012 ResourceMark rm(THREAD); 1013 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1014 CHECK_JNI_EXCEPTION_(env, NULL); 1015 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1016 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1017 jobjectArray result = NULL; 1018 if (code == NULL) { 1019 return result; 1020 } 1021 int insts_size = code->insts_size(); 1022 1023 ThreadToNativeFromVM ttn(thread); 1024 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1025 CHECK_JNI_EXCEPTION_(env, NULL); 1026 result = env->NewObjectArray(5, clazz, NULL); 1027 if (result == NULL) { 1028 return result; 1029 } 1030 1031 CodeBlobStub stub(code); 1032 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1033 env->SetObjectArrayElement(result, 0, codeBlob); 1034 1035 jobject level = integerBox(thread, env, code->comp_level()); 1036 CHECK_JNI_EXCEPTION_(env, NULL); 1037 env->SetObjectArrayElement(result, 1, level); 1038 1039 jbyteArray insts = env->NewByteArray(insts_size); 1040 CHECK_JNI_EXCEPTION_(env, NULL); 1041 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1042 env->SetObjectArrayElement(result, 2, insts); 1043 1044 jobject id = integerBox(thread, env, code->compile_id()); 1045 CHECK_JNI_EXCEPTION_(env, NULL); 1046 env->SetObjectArrayElement(result, 3, id); 1047 1048 jobject address = longBox(thread, env, (jlong) code); 1049 CHECK_JNI_EXCEPTION_(env, NULL); 1050 env->SetObjectArrayElement(result, 4, address); 1051 1052 return result; 1053 WB_END 1054 1055 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1056 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1057 BufferBlob* blob; 1058 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1059 if (full_size < size) { 1060 full_size += round_to(size - full_size, oopSize); 1061 } 1062 { 1063 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1064 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1065 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1066 } 1067 // Track memory usage statistic after releasing CodeCache_lock 1068 MemoryService::track_code_cache_memory_usage(); 1069 return blob; 1070 } 1071 1072 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1073 if (size < 0) { 1074 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1075 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1076 } 1077 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1078 WB_END 1079 1080 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1081 if (addr == 0) { 1082 return; 1083 } 1084 BufferBlob::free((BufferBlob*) addr); 1085 WB_END 1086 1087 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1088 ResourceMark rm; 1089 GrowableArray<CodeBlobStub*> blobs; 1090 { 1091 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1092 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1093 if (heap == NULL) { 1094 return NULL; 1095 } 1096 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1097 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1098 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1099 new (stub) CodeBlobStub(cb); 1100 blobs.append(stub); 1101 } 1102 } 1103 if (blobs.length() == 0) { 1104 return NULL; 1105 } 1106 ThreadToNativeFromVM ttn(thread); 1107 jobjectArray result = NULL; 1108 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1109 CHECK_JNI_EXCEPTION_(env, NULL); 1110 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1111 if (result == NULL) { 1112 return result; 1113 } 1114 int i = 0; 1115 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1116 it != blobs.end(); ++it) { 1117 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1118 env->SetObjectArrayElement(result, i, obj); 1119 ++i; 1120 } 1121 return result; 1122 WB_END 1123 1124 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1125 return CompileBroker::get_compilation_activity_mode(); 1126 WB_END 1127 1128 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1129 if (addr == 0) { 1130 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1131 "WB_GetCodeBlob: addr is null"); 1132 } 1133 ThreadToNativeFromVM ttn(thread); 1134 CodeBlobStub stub((CodeBlob*) addr); 1135 return codeBlob2objectArray(thread, env, &stub); 1136 WB_END 1137 1138 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1139 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1140 CHECK_JNI_EXCEPTION_(env, 0); 1141 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1142 return (jlong) mh->method_data(); 1143 WB_END 1144 1145 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1146 return (jlong) Thread::current()->stack_size(); 1147 WB_END 1148 1149 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1150 JavaThread* t = JavaThread::current(); 1151 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong) StackShadowPages * os::vm_page_size(); 1152 WB_END 1153 1154 1155 int WhiteBox::array_bytes_to_length(size_t bytes) { 1156 return Array<u1>::bytes_to_length(bytes); 1157 } 1158 1159 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1160 if (size < 0) { 1161 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1162 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1163 } 1164 1165 oop class_loader_oop = JNIHandles::resolve(class_loader); 1166 ClassLoaderData* cld = class_loader_oop != NULL 1167 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1168 : ClassLoaderData::the_null_class_loader_data(); 1169 1170 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1171 1172 return (jlong)(uintptr_t)metadata; 1173 WB_END 1174 1175 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 1176 oop class_loader_oop = JNIHandles::resolve(class_loader); 1177 ClassLoaderData* cld = class_loader_oop != NULL 1178 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1179 : ClassLoaderData::the_null_class_loader_data(); 1180 1181 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 1182 WB_END 1183 1184 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1185 if (inc < 0) { 1186 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1187 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1188 } 1189 1190 jlong max_size_t = (jlong) ((size_t) -1); 1191 if (inc > max_size_t) { 1192 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1193 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1194 } 1195 1196 size_t new_cap_until_GC = 0; 1197 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment()); 1198 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1199 if (!success) { 1200 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1201 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1202 "due to contention with another thread"); 1203 } 1204 return (jlong) new_cap_until_GC; 1205 WB_END 1206 1207 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1208 return (jlong) MetaspaceGC::capacity_until_GC(); 1209 WB_END 1210 1211 1212 1213 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue)) 1214 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ? 1215 Monitor::_safepoint_check_always : 1216 Monitor::_safepoint_check_never; 1217 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required), 1218 attemptedNoSafepointValue == JNI_TRUE); 1219 WB_END 1220 1221 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1222 oop obj_oop = JNIHandles::resolve(obj); 1223 return (jboolean) obj_oop->mark()->has_monitor(); 1224 WB_END 1225 1226 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1227 VM_ForceSafepoint force_safepoint_op; 1228 VMThread::execute(&force_safepoint_op); 1229 WB_END 1230 1231 WB_ENTRY(long, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1232 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1233 return (long) ikh->constants(); 1234 WB_END 1235 1236 template <typename T> 1237 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1238 assert(value != NULL, "sanity"); 1239 if (method == NULL || name == NULL) { 1240 return false; 1241 } 1242 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1243 CHECK_JNI_EXCEPTION_(env, false); 1244 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1245 // can't be in VM when we call JNI 1246 ThreadToNativeFromVM ttnfv(thread); 1247 const char* flag_name = env->GetStringUTFChars(name, NULL); 1248 bool result = CompilerOracle::has_option_value(mh, flag_name, *value); 1249 env->ReleaseStringUTFChars(name, flag_name); 1250 return result; 1251 } 1252 1253 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1254 bool result; 1255 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1256 // can't be in VM when we call JNI 1257 ThreadToNativeFromVM ttnfv(thread); 1258 return booleanBox(thread, env, result); 1259 } 1260 return NULL; 1261 WB_END 1262 1263 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1264 intx result; 1265 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1266 // can't be in VM when we call JNI 1267 ThreadToNativeFromVM ttnfv(thread); 1268 return longBox(thread, env, result); 1269 } 1270 return NULL; 1271 WB_END 1272 1273 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1274 uintx result; 1275 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1276 // can't be in VM when we call JNI 1277 ThreadToNativeFromVM ttnfv(thread); 1278 return longBox(thread, env, result); 1279 } 1280 return NULL; 1281 WB_END 1282 1283 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1284 double result; 1285 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1286 // can't be in VM when we call JNI 1287 ThreadToNativeFromVM ttnfv(thread); 1288 return doubleBox(thread, env, result); 1289 } 1290 return NULL; 1291 WB_END 1292 1293 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1294 ccstr ccstrResult; 1295 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 1296 // can't be in VM when we call JNI 1297 ThreadToNativeFromVM ttnfv(thread); 1298 jstring result = env->NewStringUTF(ccstrResult); 1299 CHECK_JNI_EXCEPTION_(env, NULL); 1300 return result; 1301 } 1302 return NULL; 1303 WB_END 1304 1305 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 1306 oop obj_oop = JNIHandles::resolve(obj); 1307 return MetaspaceShared::is_in_shared_space((void*)obj_oop); 1308 WB_END 1309 1310 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env)) 1311 return StringTable::shared_string_ignored(); 1312 WB_END 1313 1314 //Some convenience methods to deal with objects from java 1315 int WhiteBox::offset_for_field(const char* field_name, oop object, 1316 Symbol* signature_symbol) { 1317 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 1318 Thread* THREAD = Thread::current(); 1319 1320 //Get the class of our object 1321 Klass* arg_klass = object->klass(); 1322 //Turn it into an instance-klass 1323 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 1324 1325 //Create symbols to look for in the class 1326 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), 1327 THREAD); 1328 1329 //To be filled in with an offset of the field we're looking for 1330 fieldDescriptor fd; 1331 1332 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 1333 if (res == NULL) { 1334 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 1335 name_symbol->as_C_string()); 1336 vm_exit_during_initialization("Invalid layout of preloaded class: use -XX:+TraceClassLoading to see the origin of the problem class"); 1337 } 1338 1339 //fetch the field at the offset we've found 1340 int dest_offset = fd.offset(); 1341 1342 return dest_offset; 1343 } 1344 1345 1346 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 1347 int offset = offset_for_field(field_name, object, 1348 vmSymbols::string_signature()); 1349 oop string = object->obj_field(offset); 1350 if (string == NULL) { 1351 return NULL; 1352 } 1353 const char* ret = java_lang_String::as_utf8_string(string); 1354 return ret; 1355 } 1356 1357 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 1358 int offset = 1359 offset_for_field(field_name, object, vmSymbols::bool_signature()); 1360 bool ret = (object->bool_field(offset) == JNI_TRUE); 1361 return ret; 1362 } 1363 1364 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 1365 ResourceMark rm; 1366 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1367 1368 // one by one registration natives for exception catching 1369 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 1370 CHECK_JNI_EXCEPTION(env); 1371 for (int i = 0, n = method_count; i < n; ++i) { 1372 // Skip dummy entries 1373 if (method_array[i].fnPtr == NULL) continue; 1374 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 1375 jthrowable throwable_obj = env->ExceptionOccurred(); 1376 if (throwable_obj != NULL) { 1377 env->ExceptionClear(); 1378 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 1379 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 1380 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 1381 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 1382 method_array[i].name, method_array[i].signature); 1383 } 1384 } else { 1385 // Registration failed unexpectedly. 1386 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 1387 method_array[i].name, method_array[i].signature); 1388 env->UnregisterNatives(wbclass); 1389 break; 1390 } 1391 } 1392 } 1393 } 1394 1395 #define CC (char*) 1396 1397 static JNINativeMethod methods[] = { 1398 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 1399 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 1400 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 1401 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 1402 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 1403 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 1404 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 1405 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 1406 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, 1407 {CC"parseCommandLine0", 1408 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 1409 (void*) &WB_ParseCommandLine 1410 }, 1411 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1412 (void*)&WB_AddToBootstrapClassLoaderSearch}, 1413 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1414 (void*)&WB_AddToSystemClassLoaderSearch}, 1415 {CC"getCompressedOopsMaxHeapSize", CC"()J", 1416 (void*)&WB_GetCompressedOopsMaxHeapSize}, 1417 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 1418 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 1419 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 1420 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 1421 #if INCLUDE_ALL_GCS 1422 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 1423 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 1424 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 1425 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 1426 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 1427 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 1428 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 1429 (void*)&WB_G1AuxiliaryMemoryUsage }, 1430 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 1431 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 1432 #endif // INCLUDE_ALL_GCS 1433 #if INCLUDE_NMT 1434 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 1435 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 1436 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 1437 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 1438 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 1439 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 1440 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 1441 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 1442 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 1443 #endif // INCLUDE_NMT 1444 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 1445 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 1446 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 1447 (void*)&WB_DeoptimizeMethod }, 1448 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 1449 (void*)&WB_IsMethodCompiled }, 1450 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 1451 (void*)&WB_IsMethodCompilable}, 1452 {CC"isMethodQueuedForCompilation0", 1453 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 1454 {CC"isIntrinsicAvailable0", 1455 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 1456 (void*)&WB_IsIntrinsicAvailable}, 1457 {CC"makeMethodNotCompilable0", 1458 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 1459 {CC"testSetDontInlineMethod0", 1460 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 1461 {CC"getMethodCompilationLevel0", 1462 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 1463 {CC"getMethodEntryBci0", 1464 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 1465 {CC"getCompileQueueSize", 1466 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 1467 {CC"testSetForceInlineMethod0", 1468 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 1469 {CC"enqueueMethodForCompilation0", 1470 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 1471 {CC"clearMethodState0", 1472 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 1473 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 1474 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 1475 {CC"matchesMethod", 1476 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 1477 (void*)&WB_MatchesMethod}, 1478 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 1479 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 1480 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 1481 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 1482 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 1483 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 1484 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 1485 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 1486 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 1487 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 1488 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 1489 (void*)&WB_SetStringVMFlag}, 1490 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 1491 (void*)&WB_GetBooleanVMFlag}, 1492 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1493 (void*)&WB_GetIntVMFlag}, 1494 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1495 (void*)&WB_GetUintVMFlag}, 1496 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1497 (void*)&WB_GetIntxVMFlag}, 1498 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1499 (void*)&WB_GetUintxVMFlag}, 1500 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1501 (void*)&WB_GetUint64VMFlag}, 1502 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1503 (void*)&WB_GetSizeTVMFlag}, 1504 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 1505 (void*)&WB_GetDoubleVMFlag}, 1506 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 1507 (void*)&WB_GetStringVMFlag}, 1508 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 1509 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 1510 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 1511 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 1512 {CC"allocateMetaspace", 1513 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 1514 {CC"freeMetaspace", 1515 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 1516 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 1517 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 1518 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 1519 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 1520 (void*)&WB_GetNMethod }, 1521 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 1522 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 1523 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 1524 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 1525 {CC"getCompilationActivityMode", 1526 CC"()I", (void*)&WB_GetCompilationActivityMode}, 1527 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 1528 (void*)&WB_GetMethodData }, 1529 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 1530 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 1531 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 1532 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls }, 1533 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 1534 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 1535 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 1536 {CC"getMethodBooleanOption", 1537 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 1538 (void*)&WB_GetMethodBooleaneOption}, 1539 {CC"getMethodIntxOption", 1540 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 1541 (void*)&WB_GetMethodIntxOption}, 1542 {CC"getMethodUintxOption", 1543 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 1544 (void*)&WB_GetMethodUintxOption}, 1545 {CC"getMethodDoubleOption", 1546 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 1547 (void*)&WB_GetMethodDoubleOption}, 1548 {CC"getMethodStringOption", 1549 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 1550 (void*)&WB_GetMethodStringOption}, 1551 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 1552 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored }, 1553 }; 1554 1555 #undef CC 1556 1557 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 1558 { 1559 if (WhiteBoxAPI) { 1560 // Make sure that wbclass is loaded by the null classloader 1561 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass()); 1562 Handle loader(ikh->class_loader()); 1563 if (loader.is_null()) { 1564 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 1565 WhiteBox::register_extended(env, wbclass, thread); 1566 WhiteBox::set_used(); 1567 } 1568 } 1569 } 1570 JVM_END