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* g1h = G1CollectedHeap::heap(); 326 return g1h->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)); 554 555 DirectiveSet* directive; 556 if (compilation_context != NULL) { 557 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 558 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 559 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 560 directive = DirectivesStack::getMatchingDirective(cch, CompileBroker::compiler((int)compLevel)); 561 } else { 562 // Calling with NULL matches default directive 563 directive = DirectivesStack::getDefaultDirective(CompileBroker::compiler((int)compLevel)); 564 } 565 bool result = CompileBroker::compiler(compLevel)->is_intrinsic_available(mh, directive); 566 DirectivesStack::release(directive); 567 return result; 568 WB_END 569 570 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 571 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 572 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 573 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 574 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 575 return (code != NULL ? code->comp_level() : CompLevel_none); 576 WB_END 577 578 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 579 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 580 CHECK_JNI_EXCEPTION(env); 581 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 582 if (is_osr) { 583 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox"); 584 } else { 585 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); 586 } 587 WB_END 588 589 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 590 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 591 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 592 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 593 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 594 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 595 WB_END 596 597 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 598 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 599 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 600 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 601 bool result = mh->dont_inline(); 602 mh->set_dont_inline(value == JNI_TRUE); 603 return result; 604 WB_END 605 606 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 607 if (comp_level == CompLevel_any) { 608 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 609 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 610 } else { 611 return CompileBroker::queue_size(comp_level); 612 } 613 WB_END 614 615 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 616 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 617 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 618 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 619 bool result = mh->force_inline(); 620 mh->set_force_inline(value == JNI_TRUE); 621 return result; 622 WB_END 623 624 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 625 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 626 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 627 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 628 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD); 629 MutexLockerEx mu(Compile_lock); 630 return (mh->queued_for_compilation() || nm != NULL); 631 WB_END 632 633 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method)) 634 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 635 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 636 637 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 638 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(CompLevel_simple)); 639 bool result = directive->PrintAssemblyOption; 640 DirectivesStack::release(directive); 641 642 return result; 643 WB_END 644 645 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 646 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 647 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 648 649 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 650 651 ResourceMark rm; 652 const char* error_msg = NULL; 653 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 654 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 655 656 if (m == NULL) { 657 assert(error_msg != NULL, "Always have an error message"); 658 tty->print_cr("Got error: %s", error_msg); 659 return -1; // Pattern failed 660 } 661 662 // Pattern works - now check if it matches 663 int result; 664 if (m->match(mh, InlineMatcher::force_inline)) { 665 result = 2; // Force inline match 666 } else if (m->match(mh, InlineMatcher::dont_inline)) { 667 result = 1; // Dont inline match 668 } else { 669 result = 0; // No match 670 } 671 delete m; 672 return result; 673 WB_END 674 675 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 676 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 677 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 678 679 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 680 681 ResourceMark rm; 682 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 683 684 const char* error_msg = NULL; 685 686 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg); 687 if (m == NULL) { 688 assert(error_msg != NULL, "Must have error_msg"); 689 tty->print_cr("Got error: %s", error_msg); 690 return -1; 691 } 692 693 // Pattern works - now check if it matches 694 int result = m->matches(mh); 695 delete m; 696 assert(result == 0 || result == 1, "Result out of range"); 697 return result; 698 WB_END 699 700 class AlwaysFalseClosure : public BoolObjectClosure { 701 public: 702 bool do_object_b(oop p) { return false; } 703 }; 704 705 static AlwaysFalseClosure always_false; 706 707 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 708 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 709 CHECK_JNI_EXCEPTION(env); 710 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 711 MutexLockerEx mu(Compile_lock); 712 MethodData* mdo = mh->method_data(); 713 MethodCounters* mcs = mh->method_counters(); 714 715 if (mdo != NULL) { 716 mdo->init(); 717 ResourceMark rm; 718 int arg_count = mdo->method()->size_of_parameters(); 719 for (int i = 0; i < arg_count; i++) { 720 mdo->set_arg_modified(i, 0); 721 } 722 MutexLockerEx mu(mdo->extra_data_lock()); 723 mdo->clean_method_data(&always_false); 724 } 725 726 mh->clear_not_c1_compilable(); 727 mh->clear_not_c2_compilable(); 728 mh->clear_not_c2_osr_compilable(); 729 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 730 if (mcs != NULL) { 731 mcs->backedge_counter()->init(); 732 mcs->invocation_counter()->init(); 733 mcs->set_interpreter_invocation_count(0); 734 mcs->set_interpreter_throwout_count(0); 735 736 #ifdef TIERED 737 mcs->set_rate(0.0F); 738 mh->set_prev_event_count(0); 739 mh->set_prev_time(0); 740 #endif 741 } 742 WB_END 743 744 template <typename T> 745 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) { 746 if (name == NULL) { 747 return false; 748 } 749 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 750 const char* flag_name = env->GetStringUTFChars(name, NULL); 751 Flag::Error result = (*TAt)(flag_name, value, true, true); 752 env->ReleaseStringUTFChars(name, flag_name); 753 return (result == Flag::SUCCESS); 754 } 755 756 template <typename T> 757 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) { 758 if (name == NULL) { 759 return false; 760 } 761 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 762 const char* flag_name = env->GetStringUTFChars(name, NULL); 763 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL); 764 env->ReleaseStringUTFChars(name, flag_name); 765 return (result == Flag::SUCCESS); 766 } 767 768 template <typename T> 769 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 770 ResourceMark rm(thread); 771 jclass clazz = env->FindClass(name->as_C_string()); 772 CHECK_JNI_EXCEPTION_(env, NULL); 773 jmethodID methodID = env->GetStaticMethodID(clazz, 774 vmSymbols::valueOf_name()->as_C_string(), 775 sig->as_C_string()); 776 CHECK_JNI_EXCEPTION_(env, NULL); 777 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 778 CHECK_JNI_EXCEPTION_(env, NULL); 779 return result; 780 } 781 782 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 783 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 784 } 785 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 786 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 787 } 788 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 789 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 790 } 791 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 792 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 793 }*/ 794 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 795 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 796 } 797 798 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 799 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 800 const char* flag_name = env->GetStringUTFChars(name, NULL); 801 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true); 802 env->ReleaseStringUTFChars(name, flag_name); 803 return result; 804 } 805 806 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 807 Flag* flag = getVMFlag(thread, env, name); 808 return (flag != NULL) && flag->is_constant_in_binary(); 809 WB_END 810 811 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 812 Flag* flag = getVMFlag(thread, env, name); 813 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 814 WB_END 815 816 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 817 bool result; 818 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) { 819 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 820 return booleanBox(thread, env, result); 821 } 822 return NULL; 823 WB_END 824 825 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 826 int result; 827 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) { 828 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 829 return longBox(thread, env, result); 830 } 831 return NULL; 832 WB_END 833 834 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 835 uint result; 836 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) { 837 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 838 return longBox(thread, env, result); 839 } 840 return NULL; 841 WB_END 842 843 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 844 intx result; 845 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) { 846 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 847 return longBox(thread, env, result); 848 } 849 return NULL; 850 WB_END 851 852 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 853 uintx result; 854 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) { 855 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 856 return longBox(thread, env, result); 857 } 858 return NULL; 859 WB_END 860 861 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 862 uint64_t result; 863 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) { 864 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 865 return longBox(thread, env, result); 866 } 867 return NULL; 868 WB_END 869 870 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 871 uintx result; 872 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) { 873 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 874 return longBox(thread, env, result); 875 } 876 return NULL; 877 WB_END 878 879 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 880 double result; 881 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) { 882 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 883 return doubleBox(thread, env, result); 884 } 885 return NULL; 886 WB_END 887 888 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 889 ccstr ccstrResult; 890 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) { 891 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 892 jstring result = env->NewStringUTF(ccstrResult); 893 CHECK_JNI_EXCEPTION_(env, NULL); 894 return result; 895 } 896 return NULL; 897 WB_END 898 899 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 900 bool result = value == JNI_TRUE ? true : false; 901 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut); 902 WB_END 903 904 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 905 int result = value; 906 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut); 907 WB_END 908 909 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 910 uint result = value; 911 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut); 912 WB_END 913 914 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 915 intx result = value; 916 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut); 917 WB_END 918 919 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 920 uintx result = value; 921 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut); 922 WB_END 923 924 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 925 uint64_t result = value; 926 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut); 927 WB_END 928 929 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 930 size_t result = value; 931 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut); 932 WB_END 933 934 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 935 double result = value; 936 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut); 937 WB_END 938 939 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 940 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 941 const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL); 942 ccstr ccstrResult = ccstrValue; 943 bool needFree; 944 { 945 ThreadInVMfromNative ttvfn(thread); // back to VM 946 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut); 947 } 948 if (value != NULL) { 949 env->ReleaseStringUTFChars(value, ccstrValue); 950 } 951 if (needFree) { 952 FREE_C_HEAP_ARRAY(char, ccstrResult); 953 } 954 WB_END 955 956 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 957 WhiteBox::compilation_locked = true; 958 WB_END 959 960 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 961 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 962 WhiteBox::compilation_locked = false; 963 mo.notify_all(); 964 WB_END 965 966 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 967 // Force a code cache sweep and block until it finished 968 NMethodSweeper::force_sweep(); 969 WB_END 970 971 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 972 ResourceMark rm(THREAD); 973 int len; 974 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 975 return (StringTable::lookup(name, len) != NULL); 976 WB_END 977 978 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 979 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true); 980 Universe::heap()->collect(GCCause::_last_ditch_collection); 981 #if INCLUDE_ALL_GCS 982 if (UseG1GC) { 983 // Needs to be cleared explicitly for G1 984 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false); 985 } 986 #endif // INCLUDE_ALL_GCS 987 WB_END 988 989 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 990 Universe::heap()->collect(GCCause::_wb_young_gc); 991 WB_END 992 993 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 994 // static+volatile in order to force the read to happen 995 // (not be eliminated by the compiler) 996 static char c; 997 static volatile char* p; 998 999 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 1000 if (p == NULL) { 1001 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1002 } 1003 1004 c = *p; 1005 WB_END 1006 1007 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1008 const char* cpu_features = VM_Version::cpu_features(); 1009 ThreadToNativeFromVM ttn(thread); 1010 jstring features_string = env->NewStringUTF(cpu_features); 1011 1012 CHECK_JNI_EXCEPTION_(env, NULL); 1013 1014 return features_string; 1015 WB_END 1016 1017 int WhiteBox::get_blob_type(const CodeBlob* code) { 1018 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1019 return CodeCache::get_code_heap(code)->code_blob_type(); 1020 } 1021 1022 CodeHeap* WhiteBox::get_code_heap(int blob_type) { 1023 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1024 return CodeCache::get_code_heap(blob_type); 1025 } 1026 1027 struct CodeBlobStub { 1028 CodeBlobStub(const CodeBlob* blob) : 1029 name(os::strdup(blob->name())), 1030 size(blob->size()), 1031 blob_type(WhiteBox::get_blob_type(blob)), 1032 address((jlong) blob) { } 1033 ~CodeBlobStub() { os::free((void*) name); } 1034 const char* const name; 1035 const jint size; 1036 const jint blob_type; 1037 const jlong address; 1038 }; 1039 1040 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1041 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1042 CHECK_JNI_EXCEPTION_(env, NULL); 1043 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1044 1045 jstring name = env->NewStringUTF(cb->name); 1046 CHECK_JNI_EXCEPTION_(env, NULL); 1047 env->SetObjectArrayElement(result, 0, name); 1048 1049 jobject obj = integerBox(thread, env, cb->size); 1050 CHECK_JNI_EXCEPTION_(env, NULL); 1051 env->SetObjectArrayElement(result, 1, obj); 1052 1053 obj = integerBox(thread, env, cb->blob_type); 1054 CHECK_JNI_EXCEPTION_(env, NULL); 1055 env->SetObjectArrayElement(result, 2, obj); 1056 1057 obj = longBox(thread, env, cb->address); 1058 CHECK_JNI_EXCEPTION_(env, NULL); 1059 env->SetObjectArrayElement(result, 3, obj); 1060 1061 return result; 1062 } 1063 1064 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1065 ResourceMark rm(THREAD); 1066 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1067 CHECK_JNI_EXCEPTION_(env, NULL); 1068 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1069 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1070 jobjectArray result = NULL; 1071 if (code == NULL) { 1072 return result; 1073 } 1074 int insts_size = code->insts_size(); 1075 1076 ThreadToNativeFromVM ttn(thread); 1077 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1078 CHECK_JNI_EXCEPTION_(env, NULL); 1079 result = env->NewObjectArray(5, clazz, NULL); 1080 if (result == NULL) { 1081 return result; 1082 } 1083 1084 CodeBlobStub stub(code); 1085 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1086 env->SetObjectArrayElement(result, 0, codeBlob); 1087 1088 jobject level = integerBox(thread, env, code->comp_level()); 1089 CHECK_JNI_EXCEPTION_(env, NULL); 1090 env->SetObjectArrayElement(result, 1, level); 1091 1092 jbyteArray insts = env->NewByteArray(insts_size); 1093 CHECK_JNI_EXCEPTION_(env, NULL); 1094 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1095 env->SetObjectArrayElement(result, 2, insts); 1096 1097 jobject id = integerBox(thread, env, code->compile_id()); 1098 CHECK_JNI_EXCEPTION_(env, NULL); 1099 env->SetObjectArrayElement(result, 3, id); 1100 1101 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1102 CHECK_JNI_EXCEPTION_(env, NULL); 1103 env->SetObjectArrayElement(result, 4, entry_point); 1104 1105 return result; 1106 WB_END 1107 1108 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1109 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1110 BufferBlob* blob; 1111 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1112 if (full_size < size) { 1113 full_size += round_to(size - full_size, oopSize); 1114 } 1115 { 1116 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1117 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1118 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1119 } 1120 // Track memory usage statistic after releasing CodeCache_lock 1121 MemoryService::track_code_cache_memory_usage(); 1122 return blob; 1123 } 1124 1125 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1126 if (size < 0) { 1127 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1128 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1129 } 1130 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1131 WB_END 1132 1133 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1134 if (addr == 0) { 1135 return; 1136 } 1137 BufferBlob::free((BufferBlob*) addr); 1138 WB_END 1139 1140 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1141 ResourceMark rm; 1142 GrowableArray<CodeBlobStub*> blobs; 1143 { 1144 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1145 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1146 if (heap == NULL) { 1147 return NULL; 1148 } 1149 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1150 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1151 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1152 new (stub) CodeBlobStub(cb); 1153 blobs.append(stub); 1154 } 1155 } 1156 if (blobs.length() == 0) { 1157 return NULL; 1158 } 1159 ThreadToNativeFromVM ttn(thread); 1160 jobjectArray result = NULL; 1161 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1162 CHECK_JNI_EXCEPTION_(env, NULL); 1163 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1164 if (result == NULL) { 1165 return result; 1166 } 1167 int i = 0; 1168 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1169 it != blobs.end(); ++it) { 1170 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1171 env->SetObjectArrayElement(result, i, obj); 1172 ++i; 1173 } 1174 return result; 1175 WB_END 1176 1177 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1178 return CompileBroker::get_compilation_activity_mode(); 1179 WB_END 1180 1181 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1182 if (addr == 0) { 1183 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1184 "WB_GetCodeBlob: addr is null"); 1185 } 1186 ThreadToNativeFromVM ttn(thread); 1187 CodeBlobStub stub((CodeBlob*) addr); 1188 return codeBlob2objectArray(thread, env, &stub); 1189 WB_END 1190 1191 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1192 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1193 CHECK_JNI_EXCEPTION_(env, 0); 1194 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1195 return (jlong) mh->method_data(); 1196 WB_END 1197 1198 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1199 return (jlong) Thread::current()->stack_size(); 1200 WB_END 1201 1202 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1203 JavaThread* t = JavaThread::current(); 1204 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong) StackShadowPages * os::vm_page_size(); 1205 WB_END 1206 1207 1208 int WhiteBox::array_bytes_to_length(size_t bytes) { 1209 return Array<u1>::bytes_to_length(bytes); 1210 } 1211 1212 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1213 if (size < 0) { 1214 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1215 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1216 } 1217 1218 oop class_loader_oop = JNIHandles::resolve(class_loader); 1219 ClassLoaderData* cld = class_loader_oop != NULL 1220 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1221 : ClassLoaderData::the_null_class_loader_data(); 1222 1223 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1224 1225 return (jlong)(uintptr_t)metadata; 1226 WB_END 1227 1228 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 1229 oop class_loader_oop = JNIHandles::resolve(class_loader); 1230 ClassLoaderData* cld = class_loader_oop != NULL 1231 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1232 : ClassLoaderData::the_null_class_loader_data(); 1233 1234 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 1235 WB_END 1236 1237 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1238 if (inc < 0) { 1239 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1240 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1241 } 1242 1243 jlong max_size_t = (jlong) ((size_t) -1); 1244 if (inc > max_size_t) { 1245 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1246 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1247 } 1248 1249 size_t new_cap_until_GC = 0; 1250 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment()); 1251 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1252 if (!success) { 1253 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1254 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1255 "due to contention with another thread"); 1256 } 1257 return (jlong) new_cap_until_GC; 1258 WB_END 1259 1260 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1261 return (jlong) MetaspaceGC::capacity_until_GC(); 1262 WB_END 1263 1264 1265 1266 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue)) 1267 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ? 1268 Monitor::_safepoint_check_always : 1269 Monitor::_safepoint_check_never; 1270 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required), 1271 attemptedNoSafepointValue == JNI_TRUE); 1272 WB_END 1273 1274 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1275 oop obj_oop = JNIHandles::resolve(obj); 1276 return (jboolean) obj_oop->mark()->has_monitor(); 1277 WB_END 1278 1279 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1280 VM_ForceSafepoint force_safepoint_op; 1281 VMThread::execute(&force_safepoint_op); 1282 WB_END 1283 1284 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1285 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1286 return (jlong) ikh->constants(); 1287 WB_END 1288 1289 template <typename T> 1290 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1291 assert(value != NULL, "sanity"); 1292 if (method == NULL || name == NULL) { 1293 return false; 1294 } 1295 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1296 CHECK_JNI_EXCEPTION_(env, false); 1297 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1298 // can't be in VM when we call JNI 1299 ThreadToNativeFromVM ttnfv(thread); 1300 const char* flag_name = env->GetStringUTFChars(name, NULL); 1301 bool result = CompilerOracle::has_option_value(mh, flag_name, *value); 1302 env->ReleaseStringUTFChars(name, flag_name); 1303 return result; 1304 } 1305 1306 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1307 bool result; 1308 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1309 // can't be in VM when we call JNI 1310 ThreadToNativeFromVM ttnfv(thread); 1311 return booleanBox(thread, env, result); 1312 } 1313 return NULL; 1314 WB_END 1315 1316 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1317 intx result; 1318 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1319 // can't be in VM when we call JNI 1320 ThreadToNativeFromVM ttnfv(thread); 1321 return longBox(thread, env, result); 1322 } 1323 return NULL; 1324 WB_END 1325 1326 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1327 uintx result; 1328 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1329 // can't be in VM when we call JNI 1330 ThreadToNativeFromVM ttnfv(thread); 1331 return longBox(thread, env, result); 1332 } 1333 return NULL; 1334 WB_END 1335 1336 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1337 double result; 1338 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1339 // can't be in VM when we call JNI 1340 ThreadToNativeFromVM ttnfv(thread); 1341 return doubleBox(thread, env, result); 1342 } 1343 return NULL; 1344 WB_END 1345 1346 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1347 ccstr ccstrResult; 1348 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 1349 // can't be in VM when we call JNI 1350 ThreadToNativeFromVM ttnfv(thread); 1351 jstring result = env->NewStringUTF(ccstrResult); 1352 CHECK_JNI_EXCEPTION_(env, NULL); 1353 return result; 1354 } 1355 return NULL; 1356 WB_END 1357 1358 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 1359 oop obj_oop = JNIHandles::resolve(obj); 1360 return MetaspaceShared::is_in_shared_space((void*)obj_oop); 1361 WB_END 1362 1363 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env)) 1364 return StringTable::shared_string_ignored(); 1365 WB_END 1366 1367 //Some convenience methods to deal with objects from java 1368 int WhiteBox::offset_for_field(const char* field_name, oop object, 1369 Symbol* signature_symbol) { 1370 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 1371 Thread* THREAD = Thread::current(); 1372 1373 //Get the class of our object 1374 Klass* arg_klass = object->klass(); 1375 //Turn it into an instance-klass 1376 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 1377 1378 //Create symbols to look for in the class 1379 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), 1380 THREAD); 1381 1382 //To be filled in with an offset of the field we're looking for 1383 fieldDescriptor fd; 1384 1385 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 1386 if (res == NULL) { 1387 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 1388 name_symbol->as_C_string()); 1389 vm_exit_during_initialization("Invalid layout of preloaded class: use -XX:+TraceClassLoading to see the origin of the problem class"); 1390 } 1391 1392 //fetch the field at the offset we've found 1393 int dest_offset = fd.offset(); 1394 1395 return dest_offset; 1396 } 1397 1398 1399 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 1400 int offset = offset_for_field(field_name, object, 1401 vmSymbols::string_signature()); 1402 oop string = object->obj_field(offset); 1403 if (string == NULL) { 1404 return NULL; 1405 } 1406 const char* ret = java_lang_String::as_utf8_string(string); 1407 return ret; 1408 } 1409 1410 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 1411 int offset = 1412 offset_for_field(field_name, object, vmSymbols::bool_signature()); 1413 bool ret = (object->bool_field(offset) == JNI_TRUE); 1414 return ret; 1415 } 1416 1417 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 1418 ResourceMark rm; 1419 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1420 1421 // one by one registration natives for exception catching 1422 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 1423 CHECK_JNI_EXCEPTION(env); 1424 for (int i = 0, n = method_count; i < n; ++i) { 1425 // Skip dummy entries 1426 if (method_array[i].fnPtr == NULL) continue; 1427 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 1428 jthrowable throwable_obj = env->ExceptionOccurred(); 1429 if (throwable_obj != NULL) { 1430 env->ExceptionClear(); 1431 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 1432 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 1433 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 1434 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 1435 method_array[i].name, method_array[i].signature); 1436 } 1437 } else { 1438 // Registration failed unexpectedly. 1439 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 1440 method_array[i].name, method_array[i].signature); 1441 env->UnregisterNatives(wbclass); 1442 break; 1443 } 1444 } 1445 } 1446 } 1447 1448 #define CC (char*) 1449 1450 static JNINativeMethod methods[] = { 1451 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 1452 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 1453 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 1454 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 1455 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 1456 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 1457 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 1458 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 1459 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, 1460 {CC"parseCommandLine0", 1461 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 1462 (void*) &WB_ParseCommandLine 1463 }, 1464 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1465 (void*)&WB_AddToBootstrapClassLoaderSearch}, 1466 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1467 (void*)&WB_AddToSystemClassLoaderSearch}, 1468 {CC"getCompressedOopsMaxHeapSize", CC"()J", 1469 (void*)&WB_GetCompressedOopsMaxHeapSize}, 1470 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 1471 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 1472 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 1473 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 1474 #if INCLUDE_ALL_GCS 1475 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 1476 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 1477 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 1478 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 1479 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 1480 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 1481 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 1482 (void*)&WB_G1AuxiliaryMemoryUsage }, 1483 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 1484 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 1485 #endif // INCLUDE_ALL_GCS 1486 #if INCLUDE_NMT 1487 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 1488 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 1489 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 1490 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 1491 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 1492 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 1493 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 1494 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 1495 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 1496 #endif // INCLUDE_NMT 1497 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 1498 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 1499 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 1500 (void*)&WB_DeoptimizeMethod }, 1501 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 1502 (void*)&WB_IsMethodCompiled }, 1503 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 1504 (void*)&WB_IsMethodCompilable}, 1505 {CC"isMethodQueuedForCompilation0", 1506 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 1507 {CC"isIntrinsicAvailable0", 1508 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 1509 (void*)&WB_IsIntrinsicAvailable}, 1510 {CC"makeMethodNotCompilable0", 1511 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 1512 {CC"testSetDontInlineMethod0", 1513 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 1514 {CC"getMethodCompilationLevel0", 1515 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 1516 {CC"getMethodEntryBci0", 1517 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 1518 {CC"getCompileQueueSize", 1519 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 1520 {CC"testSetForceInlineMethod0", 1521 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 1522 {CC"enqueueMethodForCompilation0", 1523 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 1524 {CC"clearMethodState0", 1525 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 1526 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 1527 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 1528 {CC"matchesMethod", 1529 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 1530 (void*)&WB_MatchesMethod}, 1531 {CC"matchesInline", 1532 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 1533 (void*)&WB_MatchesInline}, 1534 {CC"shouldPrintAssembly", 1535 CC"(Ljava/lang/reflect/Executable;)Z", 1536 (void*)&WB_ShouldPrintAssembly}, 1537 1538 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 1539 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 1540 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 1541 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 1542 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 1543 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 1544 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 1545 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 1546 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 1547 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 1548 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 1549 (void*)&WB_SetStringVMFlag}, 1550 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 1551 (void*)&WB_GetBooleanVMFlag}, 1552 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1553 (void*)&WB_GetIntVMFlag}, 1554 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1555 (void*)&WB_GetUintVMFlag}, 1556 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1557 (void*)&WB_GetIntxVMFlag}, 1558 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1559 (void*)&WB_GetUintxVMFlag}, 1560 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1561 (void*)&WB_GetUint64VMFlag}, 1562 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1563 (void*)&WB_GetSizeTVMFlag}, 1564 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 1565 (void*)&WB_GetDoubleVMFlag}, 1566 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 1567 (void*)&WB_GetStringVMFlag}, 1568 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 1569 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 1570 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 1571 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 1572 {CC"allocateMetaspace", 1573 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 1574 {CC"freeMetaspace", 1575 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 1576 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 1577 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 1578 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 1579 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 1580 (void*)&WB_GetNMethod }, 1581 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 1582 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 1583 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 1584 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 1585 {CC"getCompilationActivityMode", 1586 CC"()I", (void*)&WB_GetCompilationActivityMode}, 1587 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 1588 (void*)&WB_GetMethodData }, 1589 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 1590 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 1591 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 1592 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls }, 1593 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 1594 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 1595 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 1596 {CC"getMethodBooleanOption", 1597 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 1598 (void*)&WB_GetMethodBooleaneOption}, 1599 {CC"getMethodIntxOption", 1600 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 1601 (void*)&WB_GetMethodIntxOption}, 1602 {CC"getMethodUintxOption", 1603 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 1604 (void*)&WB_GetMethodUintxOption}, 1605 {CC"getMethodDoubleOption", 1606 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 1607 (void*)&WB_GetMethodDoubleOption}, 1608 {CC"getMethodStringOption", 1609 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 1610 (void*)&WB_GetMethodStringOption}, 1611 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 1612 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored }, 1613 }; 1614 1615 #undef CC 1616 1617 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 1618 { 1619 if (WhiteBoxAPI) { 1620 // Make sure that wbclass is loaded by the null classloader 1621 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass()); 1622 Handle loader(ikh->class_loader()); 1623 if (loader.is_null()) { 1624 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 1625 WhiteBox::register_extended(env, wbclass, thread); 1626 WhiteBox::set_used(); 1627 } 1628 } 1629 } 1630 JVM_END