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