1 /* 2 * Copyright (c) 2012, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 27 #include <new> 28 29 #include "classfile/classLoaderData.hpp" 30 #include "classfile/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/concurrentMarkThread.hpp" 55 #include "gc/g1/g1CollectedHeap.inline.hpp" 56 #include "gc/g1/g1ConcurrentMark.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 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(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr)) 313 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 314 const HeapRegion* hr = g1->heap_region_containing((void*) addr); 315 return hr->is_humongous(); 316 WB_END 317 318 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr)) 319 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 320 const HeapRegion* hr = g1->heap_region_containing((void*) addr); 321 return hr->is_free(); 322 WB_END 323 324 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o)) 325 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 326 size_t nr = g1->max_regions(); 327 return (jlong)nr; 328 WB_END 329 330 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 331 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 332 size_t nr = g1->num_free_regions(); 333 return (jlong)nr; 334 WB_END 335 336 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 337 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 338 return g1h->concurrent_mark()->cmThread()->during_cycle(); 339 WB_END 340 341 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o)) 342 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 343 if (!g1h->concurrent_mark()->cmThread()->during_cycle()) { 344 g1h->collect(GCCause::_wb_conc_mark); 345 return true; 346 } 347 return false; 348 WB_END 349 350 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 351 return (jint)HeapRegion::GrainBytes; 352 WB_END 353 354 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o)) 355 ParallelScavengeHeap* ps = ParallelScavengeHeap::heap(); 356 size_t alignment = ps->gens()->virtual_spaces()->alignment(); 357 return (jlong)alignment; 358 WB_END 359 360 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o)) 361 size_t alignment = ParallelScavengeHeap::heap()->generation_alignment(); 362 return (jlong)alignment; 363 WB_END 364 365 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env)) 366 ResourceMark rm(THREAD); 367 G1CollectedHeap* g1h = G1CollectedHeap::heap(); 368 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage(); 369 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 370 return JNIHandles::make_local(env, h()); 371 WB_END 372 #endif // INCLUDE_ALL_GCS 373 374 #if INCLUDE_NMT 375 // Alloc memory using the test memory type so that we can use that to see if 376 // NMT picks it up correctly 377 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 378 jlong addr = 0; 379 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 380 return addr; 381 WB_END 382 383 // Alloc memory with pseudo call stack. The test can create psudo malloc 384 // allocation site to stress the malloc tracking. 385 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 386 address pc = (address)(size_t)pseudo_stack; 387 NativeCallStack stack(&pc, 1); 388 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 389 WB_END 390 391 // Free the memory allocated by NMTAllocTest 392 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 393 os::free((void*)(uintptr_t)mem); 394 WB_END 395 396 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 397 jlong addr = 0; 398 399 addr = (jlong)(uintptr_t)os::reserve_memory(size); 400 MemTracker::record_virtual_memory_type((address)addr, mtTest); 401 402 return addr; 403 WB_END 404 405 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 406 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 407 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 408 WB_END 409 410 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 411 os::uncommit_memory((char *)(uintptr_t)addr, size); 412 WB_END 413 414 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 415 os::release_memory((char *)(uintptr_t)addr, size); 416 WB_END 417 418 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env)) 419 // Test that we can downgrade NMT levels but not upgrade them. 420 if (MemTracker::tracking_level() == NMT_off) { 421 MemTracker::transition_to(NMT_off); 422 return MemTracker::tracking_level() == NMT_off; 423 } else { 424 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking"); 425 MemTracker::transition_to(NMT_summary); 426 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now"); 427 428 // Can't go to detail once NMT is set to summary. 429 MemTracker::transition_to(NMT_detail); 430 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now"); 431 432 // Shutdown sets tracking level to minimal. 433 MemTracker::shutdown(); 434 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); 435 436 // Once the tracking level is minimal, we cannot increase to summary. 437 // The code ignores this request instead of asserting because if the malloc site 438 // table overflows in another thread, it tries to change the code to summary. 439 MemTracker::transition_to(NMT_summary); 440 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 441 442 // Really can never go up to detail, verify that the code would never do this. 443 MemTracker::transition_to(NMT_detail); 444 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 445 return MemTracker::tracking_level() == NMT_minimal; 446 } 447 WB_END 448 449 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 450 int hash_size = MallocSiteTable::hash_buckets(); 451 assert(hash_size > 0, "NMT hash_size should be > 0"); 452 return (jint)hash_size; 453 WB_END 454 #endif // INCLUDE_NMT 455 456 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 457 assert(method != NULL, "method should not be null"); 458 ThreadToNativeFromVM ttn(thread); 459 return env->FromReflectedMethod(method); 460 } 461 462 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested 463 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation { 464 private: 465 int _result; 466 const bool _make_not_entrant; 467 public: 468 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) : 469 _result(0), _make_not_entrant(make_not_entrant) { } 470 int result() const { return _result; } 471 472 void doit() { 473 for (JavaThread* t = Threads::first(); t != NULL; t = t->next()) { 474 if (t->has_last_Java_frame()) { 475 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) { 476 frame* f = fst.current(); 477 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) { 478 RegisterMap* reg_map = fst.register_map(); 479 Deoptimization::deoptimize(t, *f, reg_map); 480 if (_make_not_entrant) { 481 nmethod* nm = CodeCache::find_nmethod(f->pc()); 482 assert(nm != NULL, "sanity check"); 483 nm->make_not_entrant(); 484 } 485 ++_result; 486 } 487 } 488 } 489 } 490 } 491 }; 492 493 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant)) 494 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE); 495 VMThread::execute(&op); 496 return op.result(); 497 WB_END 498 499 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 500 MutexLockerEx mu(Compile_lock); 501 CodeCache::mark_all_nmethods_for_deoptimization(); 502 VM_Deoptimize op; 503 VMThread::execute(&op); 504 WB_END 505 506 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 507 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 508 int result = 0; 509 CHECK_JNI_EXCEPTION_(env, result); 510 MutexLockerEx mu(Compile_lock); 511 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 512 if (is_osr) { 513 result += mh->mark_osr_nmethods(); 514 } else if (mh->code() != NULL) { 515 mh->code()->mark_for_deoptimization(); 516 ++result; 517 } 518 result += CodeCache::mark_for_deoptimization(mh()); 519 if (result > 0) { 520 VM_Deoptimize op; 521 VMThread::execute(&op); 522 } 523 return result; 524 WB_END 525 526 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, 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 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 532 if (code == NULL) { 533 return JNI_FALSE; 534 } 535 return (code->is_alive() && !code->is_marked_for_deoptimization()); 536 WB_END 537 538 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 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 if (is_osr) { 544 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); 545 } else { 546 return CompilationPolicy::can_be_compiled(mh, comp_level); 547 } 548 WB_END 549 550 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 551 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 552 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 553 MutexLockerEx mu(Compile_lock); 554 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 555 return mh->queued_for_compilation(); 556 WB_END 557 558 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel)) 559 if (compLevel < CompLevel_none || compLevel > CompLevel_highest_tier) { 560 return false; // Intrinsic is not available on a non-existent compilation level. 561 } 562 jmethodID method_id, compilation_context_id; 563 method_id = reflected_method_to_jmid(thread, env, method); 564 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 565 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id)); 566 567 DirectiveSet* directive; 568 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel); 569 if (compilation_context != NULL) { 570 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context); 571 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 572 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id)); 573 directive = DirectivesStack::getMatchingDirective(cch, comp); 574 } else { 575 // Calling with NULL matches default directive 576 directive = DirectivesStack::getDefaultDirective(comp); 577 } 578 bool result = CompileBroker::compiler(compLevel)->is_intrinsic_available(mh, directive); 579 DirectivesStack::release(directive); 580 return result; 581 WB_END 582 583 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 584 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 585 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 586 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 587 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 588 return (code != NULL ? code->comp_level() : CompLevel_none); 589 WB_END 590 591 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 592 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 593 CHECK_JNI_EXCEPTION(env); 594 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 595 if (is_osr) { 596 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox"); 597 } else { 598 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); 599 } 600 WB_END 601 602 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 603 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 604 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 605 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 606 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 607 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 608 WB_END 609 610 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 611 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 612 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 613 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 614 bool result = mh->dont_inline(); 615 mh->set_dont_inline(value == JNI_TRUE); 616 return result; 617 WB_END 618 619 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 620 if (comp_level == CompLevel_any) { 621 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 622 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 623 } else { 624 return CompileBroker::queue_size(comp_level); 625 } 626 WB_END 627 628 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 629 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 630 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 631 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 632 bool result = mh->force_inline(); 633 mh->set_force_inline(value == JNI_TRUE); 634 return result; 635 WB_END 636 637 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 638 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 639 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 640 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 641 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD); 642 MutexLockerEx mu(Compile_lock); 643 return (mh->queued_for_compilation() || nm != NULL); 644 WB_END 645 646 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method)) 647 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 648 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 649 650 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 651 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(CompLevel_simple)); 652 bool result = directive->PrintAssemblyOption; 653 DirectivesStack::release(directive); 654 655 return result; 656 WB_END 657 658 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern)) 659 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 660 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 661 662 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 663 664 ResourceMark rm; 665 const char* error_msg = NULL; 666 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 667 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg); 668 669 if (m == NULL) { 670 assert(error_msg != NULL, "Always have an error message"); 671 tty->print_cr("Got error: %s", error_msg); 672 return -1; // Pattern failed 673 } 674 675 // Pattern works - now check if it matches 676 int result; 677 if (m->match(mh, InlineMatcher::force_inline)) { 678 result = 2; // Force inline match 679 } else if (m->match(mh, InlineMatcher::dont_inline)) { 680 result = 1; // Dont inline match 681 } else { 682 result = 0; // No match 683 } 684 delete m; 685 return result; 686 WB_END 687 688 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern)) 689 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 690 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 691 692 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 693 694 ResourceMark rm; 695 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern)); 696 697 const char* error_msg = NULL; 698 699 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg); 700 if (m == NULL) { 701 assert(error_msg != NULL, "Must have error_msg"); 702 tty->print_cr("Got error: %s", error_msg); 703 return -1; 704 } 705 706 // Pattern works - now check if it matches 707 int result = m->matches(mh); 708 delete m; 709 assert(result == 0 || result == 1, "Result out of range"); 710 return result; 711 WB_END 712 713 class AlwaysFalseClosure : public BoolObjectClosure { 714 public: 715 bool do_object_b(oop p) { return false; } 716 }; 717 718 static AlwaysFalseClosure always_false; 719 720 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 721 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 722 CHECK_JNI_EXCEPTION(env); 723 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 724 MutexLockerEx mu(Compile_lock); 725 MethodData* mdo = mh->method_data(); 726 MethodCounters* mcs = mh->method_counters(); 727 728 if (mdo != NULL) { 729 mdo->init(); 730 ResourceMark rm; 731 int arg_count = mdo->method()->size_of_parameters(); 732 for (int i = 0; i < arg_count; i++) { 733 mdo->set_arg_modified(i, 0); 734 } 735 MutexLockerEx mu(mdo->extra_data_lock()); 736 mdo->clean_method_data(&always_false); 737 } 738 739 mh->clear_not_c1_compilable(); 740 mh->clear_not_c2_compilable(); 741 mh->clear_not_c2_osr_compilable(); 742 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 743 if (mcs != NULL) { 744 mcs->backedge_counter()->init(); 745 mcs->invocation_counter()->init(); 746 mcs->set_interpreter_invocation_count(0); 747 mcs->set_interpreter_throwout_count(0); 748 749 #ifdef TIERED 750 mcs->set_rate(0.0F); 751 mh->set_prev_event_count(0); 752 mh->set_prev_time(0); 753 #endif 754 } 755 WB_END 756 757 template <typename T> 758 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) { 759 if (name == NULL) { 760 return false; 761 } 762 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 763 const char* flag_name = env->GetStringUTFChars(name, NULL); 764 Flag::Error result = (*TAt)(flag_name, value, true, true); 765 env->ReleaseStringUTFChars(name, flag_name); 766 return (result == Flag::SUCCESS); 767 } 768 769 template <typename T> 770 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) { 771 if (name == NULL) { 772 return false; 773 } 774 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 775 const char* flag_name = env->GetStringUTFChars(name, NULL); 776 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL); 777 env->ReleaseStringUTFChars(name, flag_name); 778 return (result == Flag::SUCCESS); 779 } 780 781 template <typename T> 782 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 783 ResourceMark rm(thread); 784 jclass clazz = env->FindClass(name->as_C_string()); 785 CHECK_JNI_EXCEPTION_(env, NULL); 786 jmethodID methodID = env->GetStaticMethodID(clazz, 787 vmSymbols::valueOf_name()->as_C_string(), 788 sig->as_C_string()); 789 CHECK_JNI_EXCEPTION_(env, NULL); 790 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 791 CHECK_JNI_EXCEPTION_(env, NULL); 792 return result; 793 } 794 795 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 796 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 797 } 798 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 799 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 800 } 801 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 802 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 803 } 804 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 805 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 806 }*/ 807 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 808 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 809 } 810 811 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) { 812 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 813 const char* flag_name = env->GetStringUTFChars(name, NULL); 814 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true); 815 env->ReleaseStringUTFChars(name, flag_name); 816 return result; 817 } 818 819 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name)) 820 Flag* flag = getVMFlag(thread, env, name); 821 return (flag != NULL) && flag->is_constant_in_binary(); 822 WB_END 823 824 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name)) 825 Flag* flag = getVMFlag(thread, env, name); 826 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker()); 827 WB_END 828 829 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 830 bool result; 831 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) { 832 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 833 return booleanBox(thread, env, result); 834 } 835 return NULL; 836 WB_END 837 838 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name)) 839 int result; 840 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) { 841 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 842 return longBox(thread, env, result); 843 } 844 return NULL; 845 WB_END 846 847 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name)) 848 uint result; 849 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) { 850 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 851 return longBox(thread, env, result); 852 } 853 return NULL; 854 WB_END 855 856 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 857 intx result; 858 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) { 859 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 860 return longBox(thread, env, result); 861 } 862 return NULL; 863 WB_END 864 865 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 866 uintx result; 867 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) { 868 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 869 return longBox(thread, env, result); 870 } 871 return NULL; 872 WB_END 873 874 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 875 uint64_t result; 876 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) { 877 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 878 return longBox(thread, env, result); 879 } 880 return NULL; 881 WB_END 882 883 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name)) 884 uintx result; 885 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) { 886 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 887 return longBox(thread, env, result); 888 } 889 return NULL; 890 WB_END 891 892 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 893 double result; 894 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) { 895 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 896 return doubleBox(thread, env, result); 897 } 898 return NULL; 899 WB_END 900 901 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 902 ccstr ccstrResult; 903 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) { 904 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 905 jstring result = env->NewStringUTF(ccstrResult); 906 CHECK_JNI_EXCEPTION_(env, NULL); 907 return result; 908 } 909 return NULL; 910 WB_END 911 912 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 913 bool result = value == JNI_TRUE ? true : false; 914 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut); 915 WB_END 916 917 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 918 int result = value; 919 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut); 920 WB_END 921 922 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 923 uint result = value; 924 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut); 925 WB_END 926 927 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 928 intx result = value; 929 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut); 930 WB_END 931 932 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 933 uintx result = value; 934 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut); 935 WB_END 936 937 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 938 uint64_t result = value; 939 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut); 940 WB_END 941 942 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 943 size_t result = value; 944 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut); 945 WB_END 946 947 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 948 double result = value; 949 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut); 950 WB_END 951 952 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 953 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 954 const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL); 955 ccstr ccstrResult = ccstrValue; 956 bool needFree; 957 { 958 ThreadInVMfromNative ttvfn(thread); // back to VM 959 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut); 960 } 961 if (value != NULL) { 962 env->ReleaseStringUTFChars(value, ccstrValue); 963 } 964 if (needFree) { 965 FREE_C_HEAP_ARRAY(char, ccstrResult); 966 } 967 WB_END 968 969 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout)) 970 WhiteBox::compilation_locked = true; 971 WB_END 972 973 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o)) 974 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag); 975 WhiteBox::compilation_locked = false; 976 mo.notify_all(); 977 WB_END 978 979 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o)) 980 // Force a code cache sweep and block until it finished 981 NMethodSweeper::force_sweep(); 982 WB_END 983 984 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 985 ResourceMark rm(THREAD); 986 int len; 987 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 988 return (StringTable::lookup(name, len) != NULL); 989 WB_END 990 991 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 992 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true); 993 Universe::heap()->collect(GCCause::_last_ditch_collection); 994 #if INCLUDE_ALL_GCS 995 if (UseG1GC) { 996 // Needs to be cleared explicitly for G1 997 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false); 998 } 999 #endif // INCLUDE_ALL_GCS 1000 WB_END 1001 1002 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 1003 Universe::heap()->collect(GCCause::_wb_young_gc); 1004 WB_END 1005 1006 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 1007 // static+volatile in order to force the read to happen 1008 // (not be eliminated by the compiler) 1009 static char c; 1010 static volatile char* p; 1011 1012 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 1013 if (p == NULL) { 1014 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 1015 } 1016 1017 c = *p; 1018 WB_END 1019 1020 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 1021 const char* features = VM_Version::features_string(); 1022 ThreadToNativeFromVM ttn(thread); 1023 jstring features_string = env->NewStringUTF(features); 1024 1025 CHECK_JNI_EXCEPTION_(env, NULL); 1026 1027 return features_string; 1028 WB_END 1029 1030 int WhiteBox::get_blob_type(const CodeBlob* code) { 1031 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1032 return CodeCache::get_code_heap(code)->code_blob_type(); 1033 } 1034 1035 CodeHeap* WhiteBox::get_code_heap(int blob_type) { 1036 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1037 return CodeCache::get_code_heap(blob_type); 1038 } 1039 1040 struct CodeBlobStub { 1041 CodeBlobStub(const CodeBlob* blob) : 1042 name(os::strdup(blob->name())), 1043 size(blob->size()), 1044 blob_type(WhiteBox::get_blob_type(blob)), 1045 address((jlong) blob) { } 1046 ~CodeBlobStub() { os::free((void*) name); } 1047 const char* const name; 1048 const jint size; 1049 const jint blob_type; 1050 const jlong address; 1051 }; 1052 1053 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) { 1054 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1055 CHECK_JNI_EXCEPTION_(env, NULL); 1056 jobjectArray result = env->NewObjectArray(4, clazz, NULL); 1057 1058 jstring name = env->NewStringUTF(cb->name); 1059 CHECK_JNI_EXCEPTION_(env, NULL); 1060 env->SetObjectArrayElement(result, 0, name); 1061 1062 jobject obj = integerBox(thread, env, cb->size); 1063 CHECK_JNI_EXCEPTION_(env, NULL); 1064 env->SetObjectArrayElement(result, 1, obj); 1065 1066 obj = integerBox(thread, env, cb->blob_type); 1067 CHECK_JNI_EXCEPTION_(env, NULL); 1068 env->SetObjectArrayElement(result, 2, obj); 1069 1070 obj = longBox(thread, env, cb->address); 1071 CHECK_JNI_EXCEPTION_(env, NULL); 1072 env->SetObjectArrayElement(result, 3, obj); 1073 1074 return result; 1075 } 1076 1077 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 1078 ResourceMark rm(THREAD); 1079 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1080 CHECK_JNI_EXCEPTION_(env, NULL); 1081 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 1082 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 1083 jobjectArray result = NULL; 1084 if (code == NULL) { 1085 return result; 1086 } 1087 int insts_size = code->insts_size(); 1088 1089 ThreadToNativeFromVM ttn(thread); 1090 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1091 CHECK_JNI_EXCEPTION_(env, NULL); 1092 result = env->NewObjectArray(5, clazz, NULL); 1093 if (result == NULL) { 1094 return result; 1095 } 1096 1097 CodeBlobStub stub(code); 1098 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub); 1099 CHECK_JNI_EXCEPTION_(env, NULL); 1100 env->SetObjectArrayElement(result, 0, codeBlob); 1101 1102 jobject level = integerBox(thread, env, code->comp_level()); 1103 CHECK_JNI_EXCEPTION_(env, NULL); 1104 env->SetObjectArrayElement(result, 1, level); 1105 1106 jbyteArray insts = env->NewByteArray(insts_size); 1107 CHECK_JNI_EXCEPTION_(env, NULL); 1108 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 1109 env->SetObjectArrayElement(result, 2, insts); 1110 1111 jobject id = integerBox(thread, env, code->compile_id()); 1112 CHECK_JNI_EXCEPTION_(env, NULL); 1113 env->SetObjectArrayElement(result, 3, id); 1114 1115 jobject entry_point = longBox(thread, env, (jlong) code->entry_point()); 1116 CHECK_JNI_EXCEPTION_(env, NULL); 1117 env->SetObjectArrayElement(result, 4, entry_point); 1118 1119 return result; 1120 WB_END 1121 1122 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) { 1123 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled"); 1124 BufferBlob* blob; 1125 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob)); 1126 if (full_size < size) { 1127 full_size += round_to(size - full_size, oopSize); 1128 } 1129 { 1130 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1131 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type); 1132 ::new (blob) BufferBlob("WB::DummyBlob", full_size); 1133 } 1134 // Track memory usage statistic after releasing CodeCache_lock 1135 MemoryService::track_code_cache_memory_usage(); 1136 return blob; 1137 } 1138 1139 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type)) 1140 if (size < 0) { 1141 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1142 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size)); 1143 } 1144 return (jlong) WhiteBox::allocate_code_blob(size, blob_type); 1145 WB_END 1146 1147 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1148 if (addr == 0) { 1149 return; 1150 } 1151 BufferBlob::free((BufferBlob*) addr); 1152 WB_END 1153 1154 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type)) 1155 ResourceMark rm; 1156 GrowableArray<CodeBlobStub*> blobs; 1157 { 1158 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1159 CodeHeap* heap = WhiteBox::get_code_heap(blob_type); 1160 if (heap == NULL) { 1161 return NULL; 1162 } 1163 for (CodeBlob* cb = (CodeBlob*) heap->first(); 1164 cb != NULL; cb = (CodeBlob*) heap->next(cb)) { 1165 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub); 1166 new (stub) CodeBlobStub(cb); 1167 blobs.append(stub); 1168 } 1169 } 1170 if (blobs.length() == 0) { 1171 return NULL; 1172 } 1173 ThreadToNativeFromVM ttn(thread); 1174 jobjectArray result = NULL; 1175 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 1176 CHECK_JNI_EXCEPTION_(env, NULL); 1177 result = env->NewObjectArray(blobs.length(), clazz, NULL); 1178 if (result == NULL) { 1179 return result; 1180 } 1181 int i = 0; 1182 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin(); 1183 it != blobs.end(); ++it) { 1184 jobjectArray obj = codeBlob2objectArray(thread, env, *it); 1185 CHECK_JNI_EXCEPTION_(env, NULL); 1186 env->SetObjectArrayElement(result, i, obj); 1187 ++i; 1188 } 1189 return result; 1190 WB_END 1191 1192 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o)) 1193 return CompileBroker::get_compilation_activity_mode(); 1194 WB_END 1195 1196 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr)) 1197 if (addr == 0) { 1198 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 1199 "WB_GetCodeBlob: addr is null"); 1200 } 1201 ThreadToNativeFromVM ttn(thread); 1202 CodeBlobStub stub((CodeBlob*) addr); 1203 return codeBlob2objectArray(thread, env, &stub); 1204 WB_END 1205 1206 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method)) 1207 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1208 CHECK_JNI_EXCEPTION_(env, 0); 1209 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1210 return (jlong) mh->method_data(); 1211 WB_END 1212 1213 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o)) 1214 return (jlong) Thread::current()->stack_size(); 1215 WB_END 1216 1217 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o)) 1218 JavaThread* t = JavaThread::current(); 1219 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size(); 1220 WB_END 1221 1222 1223 int WhiteBox::array_bytes_to_length(size_t bytes) { 1224 return Array<u1>::bytes_to_length(bytes); 1225 } 1226 1227 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 1228 if (size < 0) { 1229 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1230 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 1231 } 1232 1233 oop class_loader_oop = JNIHandles::resolve(class_loader); 1234 ClassLoaderData* cld = class_loader_oop != NULL 1235 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1236 : ClassLoaderData::the_null_class_loader_data(); 1237 1238 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 1239 1240 return (jlong)(uintptr_t)metadata; 1241 WB_END 1242 1243 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 1244 oop class_loader_oop = JNIHandles::resolve(class_loader); 1245 ClassLoaderData* cld = class_loader_oop != NULL 1246 ? java_lang_ClassLoader::loader_data(class_loader_oop) 1247 : ClassLoaderData::the_null_class_loader_data(); 1248 1249 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 1250 WB_END 1251 1252 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 1253 if (inc < 0) { 1254 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1255 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 1256 } 1257 1258 jlong max_size_t = (jlong) ((size_t) -1); 1259 if (inc > max_size_t) { 1260 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1261 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 1262 } 1263 1264 size_t new_cap_until_GC = 0; 1265 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment()); 1266 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 1267 if (!success) { 1268 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 1269 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 1270 "due to contention with another thread"); 1271 } 1272 return (jlong) new_cap_until_GC; 1273 WB_END 1274 1275 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 1276 return (jlong) MetaspaceGC::capacity_until_GC(); 1277 WB_END 1278 1279 1280 1281 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue)) 1282 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ? 1283 Monitor::_safepoint_check_always : 1284 Monitor::_safepoint_check_never; 1285 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required), 1286 attemptedNoSafepointValue == JNI_TRUE); 1287 WB_END 1288 1289 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz)) 1290 return (jboolean)MetaspaceShared::is_in_shared_space(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz))); 1291 WB_END 1292 1293 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj)) 1294 oop obj_oop = JNIHandles::resolve(obj); 1295 return (jboolean) obj_oop->mark()->has_monitor(); 1296 WB_END 1297 1298 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb)) 1299 VM_ForceSafepoint force_safepoint_op; 1300 VMThread::execute(&force_safepoint_op); 1301 WB_END 1302 1303 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass)) 1304 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass))); 1305 return (jlong) ikh->constants(); 1306 WB_END 1307 1308 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb)) 1309 VM_ClearICs clear_ics; 1310 VMThread::execute(&clear_ics); 1311 WB_END 1312 1313 template <typename T> 1314 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) { 1315 assert(value != NULL, "sanity"); 1316 if (method == NULL || name == NULL) { 1317 return false; 1318 } 1319 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 1320 CHECK_JNI_EXCEPTION_(env, false); 1321 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid)); 1322 // can't be in VM when we call JNI 1323 ThreadToNativeFromVM ttnfv(thread); 1324 const char* flag_name = env->GetStringUTFChars(name, NULL); 1325 bool result = CompilerOracle::has_option_value(mh, flag_name, *value); 1326 env->ReleaseStringUTFChars(name, flag_name); 1327 return result; 1328 } 1329 1330 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1331 bool result; 1332 if (GetMethodOption<bool> (thread, env, method, name, &result)) { 1333 // can't be in VM when we call JNI 1334 ThreadToNativeFromVM ttnfv(thread); 1335 return booleanBox(thread, env, result); 1336 } 1337 return NULL; 1338 WB_END 1339 1340 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1341 intx result; 1342 if (GetMethodOption <intx> (thread, env, method, name, &result)) { 1343 // can't be in VM when we call JNI 1344 ThreadToNativeFromVM ttnfv(thread); 1345 return longBox(thread, env, result); 1346 } 1347 return NULL; 1348 WB_END 1349 1350 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1351 uintx result; 1352 if (GetMethodOption <uintx> (thread, env, method, name, &result)) { 1353 // can't be in VM when we call JNI 1354 ThreadToNativeFromVM ttnfv(thread); 1355 return longBox(thread, env, result); 1356 } 1357 return NULL; 1358 WB_END 1359 1360 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1361 double result; 1362 if (GetMethodOption <double> (thread, env, method, name, &result)) { 1363 // can't be in VM when we call JNI 1364 ThreadToNativeFromVM ttnfv(thread); 1365 return doubleBox(thread, env, result); 1366 } 1367 return NULL; 1368 WB_END 1369 1370 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name)) 1371 ccstr ccstrResult; 1372 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) { 1373 // can't be in VM when we call JNI 1374 ThreadToNativeFromVM ttnfv(thread); 1375 jstring result = env->NewStringUTF(ccstrResult); 1376 CHECK_JNI_EXCEPTION_(env, NULL); 1377 return result; 1378 } 1379 return NULL; 1380 WB_END 1381 1382 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj)) 1383 oop obj_oop = JNIHandles::resolve(obj); 1384 return MetaspaceShared::is_in_shared_space((void*)obj_oop); 1385 WB_END 1386 1387 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env)) 1388 return StringTable::shared_string_ignored(); 1389 WB_END 1390 1391 //Some convenience methods to deal with objects from java 1392 int WhiteBox::offset_for_field(const char* field_name, oop object, 1393 Symbol* signature_symbol) { 1394 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 1395 Thread* THREAD = Thread::current(); 1396 1397 //Get the class of our object 1398 Klass* arg_klass = object->klass(); 1399 //Turn it into an instance-klass 1400 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 1401 1402 //Create symbols to look for in the class 1403 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), 1404 THREAD); 1405 1406 //To be filled in with an offset of the field we're looking for 1407 fieldDescriptor fd; 1408 1409 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 1410 if (res == NULL) { 1411 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 1412 name_symbol->as_C_string()); 1413 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:classload=info to see the origin of the problem class"); 1414 } 1415 1416 //fetch the field at the offset we've found 1417 int dest_offset = fd.offset(); 1418 1419 return dest_offset; 1420 } 1421 1422 1423 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 1424 int offset = offset_for_field(field_name, object, 1425 vmSymbols::string_signature()); 1426 oop string = object->obj_field(offset); 1427 if (string == NULL) { 1428 return NULL; 1429 } 1430 const char* ret = java_lang_String::as_utf8_string(string); 1431 return ret; 1432 } 1433 1434 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 1435 int offset = 1436 offset_for_field(field_name, object, vmSymbols::bool_signature()); 1437 bool ret = (object->bool_field(offset) == JNI_TRUE); 1438 return ret; 1439 } 1440 1441 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 1442 ResourceMark rm; 1443 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 1444 1445 // one by one registration natives for exception catching 1446 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 1447 CHECK_JNI_EXCEPTION(env); 1448 for (int i = 0, n = method_count; i < n; ++i) { 1449 // Skip dummy entries 1450 if (method_array[i].fnPtr == NULL) continue; 1451 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 1452 jthrowable throwable_obj = env->ExceptionOccurred(); 1453 if (throwable_obj != NULL) { 1454 env->ExceptionClear(); 1455 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 1456 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 1457 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 1458 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 1459 method_array[i].name, method_array[i].signature); 1460 } 1461 } else { 1462 // Registration failed unexpectedly. 1463 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 1464 method_array[i].name, method_array[i].signature); 1465 env->UnregisterNatives(wbclass); 1466 break; 1467 } 1468 } 1469 } 1470 } 1471 1472 #define CC (char*) 1473 1474 static JNINativeMethod methods[] = { 1475 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 1476 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 1477 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 1478 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 1479 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 1480 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity }, 1481 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize}, 1482 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment}, 1483 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, 1484 {CC"parseCommandLine0", 1485 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 1486 (void*) &WB_ParseCommandLine 1487 }, 1488 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1489 (void*)&WB_AddToBootstrapClassLoaderSearch}, 1490 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V", 1491 (void*)&WB_AddToSystemClassLoaderSearch}, 1492 {CC"getCompressedOopsMaxHeapSize", CC"()J", 1493 (void*)&WB_GetCompressedOopsMaxHeapSize}, 1494 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 1495 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 1496 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 1497 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 1498 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass }, 1499 #if INCLUDE_ALL_GCS 1500 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 1501 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z",(void*)&WB_G1IsHumongous }, 1502 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion}, 1503 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion}, 1504 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions }, 1505 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 1506 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 1507 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle }, 1508 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;", 1509 (void*)&WB_G1AuxiliaryMemoryUsage }, 1510 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment}, 1511 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment}, 1512 #endif // INCLUDE_ALL_GCS 1513 #if INCLUDE_NMT 1514 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 1515 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 1516 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 1517 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 1518 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 1519 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 1520 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 1521 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 1522 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 1523 #endif // INCLUDE_NMT 1524 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames }, 1525 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 1526 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I", 1527 (void*)&WB_DeoptimizeMethod }, 1528 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z", 1529 (void*)&WB_IsMethodCompiled }, 1530 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z", 1531 (void*)&WB_IsMethodCompilable}, 1532 {CC"isMethodQueuedForCompilation0", 1533 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 1534 {CC"isIntrinsicAvailable0", 1535 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z", 1536 (void*)&WB_IsIntrinsicAvailable}, 1537 {CC"makeMethodNotCompilable0", 1538 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 1539 {CC"testSetDontInlineMethod0", 1540 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 1541 {CC"getMethodCompilationLevel0", 1542 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 1543 {CC"getMethodEntryBci0", 1544 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 1545 {CC"getCompileQueueSize", 1546 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 1547 {CC"testSetForceInlineMethod0", 1548 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 1549 {CC"enqueueMethodForCompilation0", 1550 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 1551 {CC"clearMethodState0", 1552 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 1553 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation}, 1554 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation}, 1555 {CC"matchesMethod", 1556 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 1557 (void*)&WB_MatchesMethod}, 1558 {CC"matchesInline", 1559 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I", 1560 (void*)&WB_MatchesInline}, 1561 {CC"shouldPrintAssembly", 1562 CC"(Ljava/lang/reflect/Executable;)Z", 1563 (void*)&WB_ShouldPrintAssembly}, 1564 1565 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag}, 1566 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag}, 1567 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 1568 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag}, 1569 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag}, 1570 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 1571 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 1572 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 1573 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag}, 1574 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 1575 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 1576 (void*)&WB_SetStringVMFlag}, 1577 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 1578 (void*)&WB_GetBooleanVMFlag}, 1579 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1580 (void*)&WB_GetIntVMFlag}, 1581 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1582 (void*)&WB_GetUintVMFlag}, 1583 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1584 (void*)&WB_GetIntxVMFlag}, 1585 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1586 (void*)&WB_GetUintxVMFlag}, 1587 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1588 (void*)&WB_GetUint64VMFlag}, 1589 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1590 (void*)&WB_GetSizeTVMFlag}, 1591 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 1592 (void*)&WB_GetDoubleVMFlag}, 1593 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 1594 (void*)&WB_GetStringVMFlag}, 1595 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 1596 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 1597 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 1598 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 1599 {CC"allocateMetaspace", 1600 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 1601 {CC"freeMetaspace", 1602 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 1603 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 1604 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 1605 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 1606 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 1607 (void*)&WB_GetNMethod }, 1608 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep }, 1609 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob }, 1610 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob }, 1611 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries }, 1612 {CC"getCompilationActivityMode", 1613 CC"()I", (void*)&WB_GetCompilationActivityMode}, 1614 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J", 1615 (void*)&WB_GetMethodData }, 1616 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob }, 1617 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize }, 1618 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize }, 1619 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls }, 1620 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated }, 1621 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint }, 1622 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool }, 1623 {CC"getMethodBooleanOption", 1624 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;", 1625 (void*)&WB_GetMethodBooleaneOption}, 1626 {CC"getMethodIntxOption", 1627 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 1628 (void*)&WB_GetMethodIntxOption}, 1629 {CC"getMethodUintxOption", 1630 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;", 1631 (void*)&WB_GetMethodUintxOption}, 1632 {CC"getMethodDoubleOption", 1633 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;", 1634 (void*)&WB_GetMethodDoubleOption}, 1635 {CC"getMethodStringOption", 1636 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;", 1637 (void*)&WB_GetMethodStringOption}, 1638 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared }, 1639 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored }, 1640 {CC"clearInlineCaches", CC"()V", (void*)&WB_ClearInlineCaches }, 1641 }; 1642 1643 #undef CC 1644 1645 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 1646 { 1647 if (WhiteBoxAPI) { 1648 // Make sure that wbclass is loaded by the null classloader 1649 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass()); 1650 Handle loader(ikh->class_loader()); 1651 if (loader.is_null()) { 1652 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 1653 WhiteBox::register_extended(env, wbclass, thread); 1654 WhiteBox::set_used(); 1655 } 1656 } 1657 } 1658 JVM_END