runtime.cc revision 3d21bdf8894e780d349c481e5c9e29fe1556051c
1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include "runtime.h" 18 19// sys/mount.h has to come before linux/fs.h due to redefinition of MS_RDONLY, MS_BIND, etc 20#include <sys/mount.h> 21#ifdef __linux__ 22#include <linux/fs.h> 23#endif 24 25#include <signal.h> 26#include <sys/syscall.h> 27#include <valgrind.h> 28 29#include <cstdio> 30#include <cstdlib> 31#include <limits> 32#include <memory_representation.h> 33#include <vector> 34#include <fcntl.h> 35 36#include "JniConstants.h" 37#include "ScopedLocalRef.h" 38#include "arch/arm/quick_method_frame_info_arm.h" 39#include "arch/arm/registers_arm.h" 40#include "arch/arm64/quick_method_frame_info_arm64.h" 41#include "arch/arm64/registers_arm64.h" 42#include "arch/instruction_set_features.h" 43#include "arch/mips/quick_method_frame_info_mips.h" 44#include "arch/mips/registers_mips.h" 45#include "arch/mips64/quick_method_frame_info_mips64.h" 46#include "arch/mips64/registers_mips64.h" 47#include "arch/x86/quick_method_frame_info_x86.h" 48#include "arch/x86/registers_x86.h" 49#include "arch/x86_64/quick_method_frame_info_x86_64.h" 50#include "arch/x86_64/registers_x86_64.h" 51#include "art_field-inl.h" 52#include "art_method-inl.h" 53#include "asm_support.h" 54#include "atomic.h" 55#include "base/arena_allocator.h" 56#include "base/dumpable.h" 57#include "base/unix_file/fd_file.h" 58#include "class_linker-inl.h" 59#include "compiler_callbacks.h" 60#include "debugger.h" 61#include "elf_file.h" 62#include "entrypoints/runtime_asm_entrypoints.h" 63#include "fault_handler.h" 64#include "gc/accounting/card_table-inl.h" 65#include "gc/heap.h" 66#include "gc/space/image_space.h" 67#include "gc/space/space-inl.h" 68#include "handle_scope-inl.h" 69#include "image.h" 70#include "instrumentation.h" 71#include "intern_table.h" 72#include "interpreter/interpreter.h" 73#include "jit/jit.h" 74#include "jni_internal.h" 75#include "linear_alloc.h" 76#include "mirror/array.h" 77#include "mirror/class-inl.h" 78#include "mirror/class_loader.h" 79#include "mirror/field.h" 80#include "mirror/method.h" 81#include "mirror/stack_trace_element.h" 82#include "mirror/throwable.h" 83#include "monitor.h" 84#include "native/dalvik_system_DexFile.h" 85#include "native/dalvik_system_VMDebug.h" 86#include "native/dalvik_system_VMRuntime.h" 87#include "native/dalvik_system_VMStack.h" 88#include "native/dalvik_system_ZygoteHooks.h" 89#include "native/java_lang_Class.h" 90#include "native/java_lang_DexCache.h" 91#include "native/java_lang_Object.h" 92#include "native/java_lang_Runtime.h" 93#include "native/java_lang_String.h" 94#include "native/java_lang_StringFactory.h" 95#include "native/java_lang_System.h" 96#include "native/java_lang_Thread.h" 97#include "native/java_lang_Throwable.h" 98#include "native/java_lang_VMClassLoader.h" 99#include "native/java_lang_ref_FinalizerReference.h" 100#include "native/java_lang_ref_Reference.h" 101#include "native/java_lang_reflect_Array.h" 102#include "native/java_lang_reflect_Constructor.h" 103#include "native/java_lang_reflect_Field.h" 104#include "native/java_lang_reflect_Method.h" 105#include "native/java_lang_reflect_Proxy.h" 106#include "native/java_util_concurrent_atomic_AtomicLong.h" 107#include "native/libcore_util_CharsetUtils.h" 108#include "native/org_apache_harmony_dalvik_ddmc_DdmServer.h" 109#include "native/org_apache_harmony_dalvik_ddmc_DdmVmInternal.h" 110#include "native/sun_misc_Unsafe.h" 111#include "native_bridge_art_interface.h" 112#include "oat_file.h" 113#include "os.h" 114#include "parsed_options.h" 115#include "profiler.h" 116#include "quick/quick_method_frame_info.h" 117#include "reflection.h" 118#include "runtime_options.h" 119#include "ScopedLocalRef.h" 120#include "scoped_thread_state_change.h" 121#include "sigchain.h" 122#include "signal_catcher.h" 123#include "signal_set.h" 124#include "thread.h" 125#include "thread_list.h" 126#include "trace.h" 127#include "transaction.h" 128#include "verifier/method_verifier.h" 129#include "well_known_classes.h" 130 131namespace art { 132 133// If a signal isn't handled properly, enable a handler that attempts to dump the Java stack. 134static constexpr bool kEnableJavaStackTraceHandler = false; 135Runtime* Runtime::instance_ = nullptr; 136 137struct TraceConfig { 138 Trace::TraceMode trace_mode; 139 Trace::TraceOutputMode trace_output_mode; 140 std::string trace_file; 141 size_t trace_file_size; 142}; 143 144Runtime::Runtime() 145 : instruction_set_(kNone), 146 compiler_callbacks_(nullptr), 147 is_zygote_(false), 148 must_relocate_(false), 149 is_concurrent_gc_enabled_(true), 150 is_explicit_gc_disabled_(false), 151 dex2oat_enabled_(true), 152 image_dex2oat_enabled_(true), 153 default_stack_size_(0), 154 heap_(nullptr), 155 max_spins_before_thin_lock_inflation_(Monitor::kDefaultMaxSpinsBeforeThinLockInflation), 156 monitor_list_(nullptr), 157 monitor_pool_(nullptr), 158 thread_list_(nullptr), 159 intern_table_(nullptr), 160 class_linker_(nullptr), 161 signal_catcher_(nullptr), 162 java_vm_(nullptr), 163 fault_message_lock_("Fault message lock"), 164 fault_message_(""), 165 threads_being_born_(0), 166 shutdown_cond_(new ConditionVariable("Runtime shutdown", *Locks::runtime_shutdown_lock_)), 167 shutting_down_(false), 168 shutting_down_started_(false), 169 started_(false), 170 finished_starting_(false), 171 vfprintf_(nullptr), 172 exit_(nullptr), 173 abort_(nullptr), 174 stats_enabled_(false), 175 running_on_valgrind_(RUNNING_ON_VALGRIND > 0), 176 profiler_started_(false), 177 instrumentation_(), 178 main_thread_group_(nullptr), 179 system_thread_group_(nullptr), 180 system_class_loader_(nullptr), 181 dump_gc_performance_on_shutdown_(false), 182 preinitialization_transaction_(nullptr), 183 verify_(false), 184 allow_dex_file_fallback_(true), 185 target_sdk_version_(0), 186 implicit_null_checks_(false), 187 implicit_so_checks_(false), 188 implicit_suspend_checks_(false), 189 is_native_bridge_loaded_(false), 190 zygote_max_failed_boots_(0) { 191 CheckAsmSupportOffsetsAndSizes(); 192 std::fill(callee_save_methods_, callee_save_methods_ + arraysize(callee_save_methods_), 0u); 193} 194 195Runtime::~Runtime() { 196 if (is_native_bridge_loaded_) { 197 UnloadNativeBridge(); 198 } 199 if (dump_gc_performance_on_shutdown_) { 200 // This can't be called from the Heap destructor below because it 201 // could call RosAlloc::InspectAll() which needs the thread_list 202 // to be still alive. 203 heap_->DumpGcPerformanceInfo(LOG(INFO)); 204 } 205 206 Thread* self = Thread::Current(); 207 const bool attach_shutdown_thread = self == nullptr; 208 if (attach_shutdown_thread) { 209 CHECK(AttachCurrentThread("Shutdown thread", false, nullptr, false)); 210 self = Thread::Current(); 211 } else { 212 LOG(WARNING) << "Current thread not detached in Runtime shutdown"; 213 } 214 215 { 216 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 217 shutting_down_started_ = true; 218 while (threads_being_born_ > 0) { 219 shutdown_cond_->Wait(self); 220 } 221 shutting_down_ = true; 222 } 223 // Shutdown and wait for the daemons. 224 CHECK(self != nullptr); 225 if (IsFinishedStarting()) { 226 self->ClearException(); 227 self->GetJniEnv()->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 228 WellKnownClasses::java_lang_Daemons_stop); 229 } 230 if (attach_shutdown_thread) { 231 DetachCurrentThread(); 232 self = nullptr; 233 } 234 235 // Shut down background profiler before the runtime exits. 236 if (profiler_started_) { 237 BackgroundMethodSamplingProfiler::Shutdown(); 238 } 239 240 Trace::Shutdown(); 241 242 // Make sure to let the GC complete if it is running. 243 heap_->WaitForGcToComplete(gc::kGcCauseBackground, self); 244 heap_->DeleteThreadPool(); 245 if (jit_.get() != nullptr) { 246 VLOG(jit) << "Deleting jit thread pool"; 247 // Delete thread pool before the thread list since we don't want to wait forever on the 248 // JIT compiler threads. 249 jit_->DeleteThreadPool(); 250 } 251 252 // Make sure our internal threads are dead before we start tearing down things they're using. 253 Dbg::StopJdwp(); 254 delete signal_catcher_; 255 256 // Make sure all other non-daemon threads have terminated, and all daemon threads are suspended. 257 delete thread_list_; 258 259 // Delete the JIT after thread list to ensure that there is no remaining threads which could be 260 // accessing the instrumentation when we delete it. 261 if (jit_.get() != nullptr) { 262 VLOG(jit) << "Deleting jit"; 263 jit_.reset(nullptr); 264 } 265 linear_alloc_.reset(); 266 arena_pool_.reset(); 267 low_4gb_arena_pool_.reset(); 268 269 // Shutdown the fault manager if it was initialized. 270 fault_manager.Shutdown(); 271 272 delete monitor_list_; 273 delete monitor_pool_; 274 delete class_linker_; 275 delete heap_; 276 delete intern_table_; 277 delete java_vm_; 278 Thread::Shutdown(); 279 QuasiAtomic::Shutdown(); 280 verifier::MethodVerifier::Shutdown(); 281 MemMap::Shutdown(); 282 // TODO: acquire a static mutex on Runtime to avoid racing. 283 CHECK(instance_ == nullptr || instance_ == this); 284 instance_ = nullptr; 285} 286 287struct AbortState { 288 void Dump(std::ostream& os) const { 289 if (gAborting > 1) { 290 os << "Runtime aborting --- recursively, so no thread-specific detail!\n"; 291 return; 292 } 293 gAborting++; 294 os << "Runtime aborting...\n"; 295 if (Runtime::Current() == nullptr) { 296 os << "(Runtime does not yet exist!)\n"; 297 return; 298 } 299 Thread* self = Thread::Current(); 300 if (self == nullptr) { 301 os << "(Aborting thread was not attached to runtime!)\n"; 302 DumpKernelStack(os, GetTid(), " kernel: ", false); 303 DumpNativeStack(os, GetTid(), " native: ", nullptr); 304 } else { 305 os << "Aborting thread:\n"; 306 if (Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)) { 307 DumpThread(os, self); 308 } else { 309 if (Locks::mutator_lock_->SharedTryLock(self)) { 310 DumpThread(os, self); 311 Locks::mutator_lock_->SharedUnlock(self); 312 } 313 } 314 } 315 DumpAllThreads(os, self); 316 } 317 318 // No thread-safety analysis as we do explicitly test for holding the mutator lock. 319 void DumpThread(std::ostream& os, Thread* self) const NO_THREAD_SAFETY_ANALYSIS { 320 DCHECK(Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)); 321 self->Dump(os); 322 if (self->IsExceptionPending()) { 323 mirror::Throwable* exception = self->GetException(); 324 os << "Pending exception " << exception->Dump(); 325 } 326 } 327 328 void DumpAllThreads(std::ostream& os, Thread* self) const { 329 Runtime* runtime = Runtime::Current(); 330 if (runtime != nullptr) { 331 ThreadList* thread_list = runtime->GetThreadList(); 332 if (thread_list != nullptr) { 333 bool tll_already_held = Locks::thread_list_lock_->IsExclusiveHeld(self); 334 bool ml_already_held = Locks::mutator_lock_->IsSharedHeld(self); 335 if (!tll_already_held || !ml_already_held) { 336 os << "Dumping all threads without appropriate locks held:" 337 << (!tll_already_held ? " thread list lock" : "") 338 << (!ml_already_held ? " mutator lock" : "") 339 << "\n"; 340 } 341 os << "All threads:\n"; 342 thread_list->Dump(os); 343 } 344 } 345 } 346}; 347 348void Runtime::Abort() { 349 gAborting++; // set before taking any locks 350 351 // Ensure that we don't have multiple threads trying to abort at once, 352 // which would result in significantly worse diagnostics. 353 MutexLock mu(Thread::Current(), *Locks::abort_lock_); 354 355 // Get any pending output out of the way. 356 fflush(nullptr); 357 358 // Many people have difficulty distinguish aborts from crashes, 359 // so be explicit. 360 AbortState state; 361 LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state); 362 363 // Call the abort hook if we have one. 364 if (Runtime::Current() != nullptr && Runtime::Current()->abort_ != nullptr) { 365 LOG(INTERNAL_FATAL) << "Calling abort hook..."; 366 Runtime::Current()->abort_(); 367 // notreached 368 LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!"; 369 } 370 371#if defined(__GLIBC__) 372 // TODO: we ought to be able to use pthread_kill(3) here (or abort(3), 373 // which POSIX defines in terms of raise(3), which POSIX defines in terms 374 // of pthread_kill(3)). On Linux, though, libcorkscrew can't unwind through 375 // libpthread, which means the stacks we dump would be useless. Calling 376 // tgkill(2) directly avoids that. 377 syscall(__NR_tgkill, getpid(), GetTid(), SIGABRT); 378 // TODO: LLVM installs it's own SIGABRT handler so exit to be safe... Can we disable that in LLVM? 379 // If not, we could use sigaction(3) before calling tgkill(2) and lose this call to exit(3). 380 exit(1); 381#else 382 abort(); 383#endif 384 // notreached 385} 386 387void Runtime::PreZygoteFork() { 388 heap_->PreZygoteFork(); 389} 390 391void Runtime::CallExitHook(jint status) { 392 if (exit_ != nullptr) { 393 ScopedThreadStateChange tsc(Thread::Current(), kNative); 394 exit_(status); 395 LOG(WARNING) << "Exit hook returned instead of exiting!"; 396 } 397} 398 399void Runtime::SweepSystemWeaks(IsMarkedCallback* visitor, void* arg) { 400 GetInternTable()->SweepInternTableWeaks(visitor, arg); 401 GetMonitorList()->SweepMonitorList(visitor, arg); 402 GetJavaVM()->SweepJniWeakGlobals(visitor, arg); 403} 404 405bool Runtime::Create(const RuntimeOptions& options, bool ignore_unrecognized) { 406 // TODO: acquire a static mutex on Runtime to avoid racing. 407 if (Runtime::instance_ != nullptr) { 408 return false; 409 } 410 InitLogging(nullptr); // Calls Locks::Init() as a side effect. 411 instance_ = new Runtime; 412 if (!instance_->Init(options, ignore_unrecognized)) { 413 // TODO: Currently deleting the instance will abort the runtime on destruction. Now This will 414 // leak memory, instead. Fix the destructor. b/19100793. 415 // delete instance_; 416 instance_ = nullptr; 417 return false; 418 } 419 return true; 420} 421 422static jobject CreateSystemClassLoader(Runtime* runtime) { 423 if (runtime->IsAotCompiler() && !runtime->GetCompilerCallbacks()->IsBootImage()) { 424 return nullptr; 425 } 426 427 ScopedObjectAccess soa(Thread::Current()); 428 ClassLinker* cl = Runtime::Current()->GetClassLinker(); 429 auto pointer_size = cl->GetImagePointerSize(); 430 431 StackHandleScope<2> hs(soa.Self()); 432 Handle<mirror::Class> class_loader_class( 433 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader))); 434 CHECK(cl->EnsureInitialized(soa.Self(), class_loader_class, true, true)); 435 436 ArtMethod* getSystemClassLoader = class_loader_class->FindDirectMethod( 437 "getSystemClassLoader", "()Ljava/lang/ClassLoader;", pointer_size); 438 CHECK(getSystemClassLoader != nullptr); 439 440 JValue result = InvokeWithJValues(soa, nullptr, soa.EncodeMethod(getSystemClassLoader), nullptr); 441 JNIEnv* env = soa.Self()->GetJniEnv(); 442 ScopedLocalRef<jobject> system_class_loader(env, soa.AddLocalReference<jobject>(result.GetL())); 443 CHECK(system_class_loader.get() != nullptr); 444 445 soa.Self()->SetClassLoaderOverride(system_class_loader.get()); 446 447 Handle<mirror::Class> thread_class( 448 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread))); 449 CHECK(cl->EnsureInitialized(soa.Self(), thread_class, true, true)); 450 451 ArtField* contextClassLoader = 452 thread_class->FindDeclaredInstanceField("contextClassLoader", "Ljava/lang/ClassLoader;"); 453 CHECK(contextClassLoader != nullptr); 454 455 // We can't run in a transaction yet. 456 contextClassLoader->SetObject<false>(soa.Self()->GetPeer(), 457 soa.Decode<mirror::ClassLoader*>(system_class_loader.get())); 458 459 return env->NewGlobalRef(system_class_loader.get()); 460} 461 462std::string Runtime::GetPatchoatExecutable() const { 463 if (!patchoat_executable_.empty()) { 464 return patchoat_executable_; 465 } 466 std::string patchoat_executable(GetAndroidRoot()); 467 patchoat_executable += (kIsDebugBuild ? "/bin/patchoatd" : "/bin/patchoat"); 468 return patchoat_executable; 469} 470 471std::string Runtime::GetCompilerExecutable() const { 472 if (!compiler_executable_.empty()) { 473 return compiler_executable_; 474 } 475 std::string compiler_executable(GetAndroidRoot()); 476 compiler_executable += (kIsDebugBuild ? "/bin/dex2oatd" : "/bin/dex2oat"); 477 return compiler_executable; 478} 479 480bool Runtime::Start() { 481 VLOG(startup) << "Runtime::Start entering"; 482 483 // Restore main thread state to kNative as expected by native code. 484 Thread* self = Thread::Current(); 485 486 self->TransitionFromRunnableToSuspended(kNative); 487 488 started_ = true; 489 490 // Use !IsAotCompiler so that we get test coverage, tests are never the zygote. 491 if (!IsAotCompiler()) { 492 ScopedObjectAccess soa(self); 493 gc::space::ImageSpace* image_space = heap_->GetImageSpace(); 494 if (image_space != nullptr) { 495 GetInternTable()->AddImageStringsToTable(image_space); 496 GetClassLinker()->MoveImageClassesToClassTable(); 497 } 498 } 499 500 // If we are the zygote then we need to wait until after forking to create the code cache 501 // due to SELinux restrictions on r/w/x memory regions. 502 if (!IsZygote() && jit_options_->UseJIT()) { 503 CreateJit(); 504 } 505 506 if (!IsImageDex2OatEnabled() || !GetHeap()->HasImageSpace()) { 507 ScopedObjectAccess soa(self); 508 StackHandleScope<1> hs(soa.Self()); 509 auto klass(hs.NewHandle<mirror::Class>(mirror::Class::GetJavaLangClass())); 510 class_linker_->EnsureInitialized(soa.Self(), klass, true, true); 511 } 512 513 // InitNativeMethods needs to be after started_ so that the classes 514 // it touches will have methods linked to the oat file if necessary. 515 InitNativeMethods(); 516 517 // Initialize well known thread group values that may be accessed threads while attaching. 518 InitThreadGroups(self); 519 520 Thread::FinishStartup(); 521 522 system_class_loader_ = CreateSystemClassLoader(this); 523 524 if (is_zygote_) { 525 if (!InitZygote()) { 526 return false; 527 } 528 } else { 529 if (is_native_bridge_loaded_) { 530 PreInitializeNativeBridge("."); 531 } 532 DidForkFromZygote(self->GetJniEnv(), NativeBridgeAction::kInitialize, 533 GetInstructionSetString(kRuntimeISA)); 534 } 535 536 StartDaemonThreads(); 537 538 { 539 ScopedObjectAccess soa(self); 540 self->GetJniEnv()->locals.AssertEmpty(); 541 } 542 543 VLOG(startup) << "Runtime::Start exiting"; 544 finished_starting_ = true; 545 546 if (profiler_options_.IsEnabled() && !profile_output_filename_.empty()) { 547 // User has asked for a profile using -Xenable-profiler. 548 // Create the profile file if it doesn't exist. 549 int fd = open(profile_output_filename_.c_str(), O_RDWR|O_CREAT|O_EXCL, 0660); 550 if (fd >= 0) { 551 close(fd); 552 } else if (errno != EEXIST) { 553 LOG(INFO) << "Failed to access the profile file. Profiler disabled."; 554 return true; 555 } 556 StartProfiler(profile_output_filename_.c_str()); 557 } 558 559 if (trace_config_.get() != nullptr && trace_config_->trace_file != "") { 560 ScopedThreadStateChange tsc(self, kWaitingForMethodTracingStart); 561 Trace::Start(trace_config_->trace_file.c_str(), 562 -1, 563 static_cast<int>(trace_config_->trace_file_size), 564 0, 565 trace_config_->trace_output_mode, 566 trace_config_->trace_mode, 567 0); 568 } 569 570 return true; 571} 572 573void Runtime::EndThreadBirth() EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_) { 574 DCHECK_GT(threads_being_born_, 0U); 575 threads_being_born_--; 576 if (shutting_down_started_ && threads_being_born_ == 0) { 577 shutdown_cond_->Broadcast(Thread::Current()); 578 } 579} 580 581// Do zygote-mode-only initialization. 582bool Runtime::InitZygote() { 583#ifdef __linux__ 584 // zygote goes into its own process group 585 setpgid(0, 0); 586 587 // See storage config details at http://source.android.com/tech/storage/ 588 // Create private mount namespace shared by all children 589 if (unshare(CLONE_NEWNS) == -1) { 590 PLOG(WARNING) << "Failed to unshare()"; 591 return false; 592 } 593 594 // Mark rootfs as being a slave so that changes from default 595 // namespace only flow into our children. 596 if (mount("rootfs", "/", nullptr, (MS_SLAVE | MS_REC), nullptr) == -1) { 597 PLOG(WARNING) << "Failed to mount() rootfs as MS_SLAVE"; 598 return false; 599 } 600 601 // Create a staging tmpfs that is shared by our children; they will 602 // bind mount storage into their respective private namespaces, which 603 // are isolated from each other. 604 const char* target_base = getenv("EMULATED_STORAGE_TARGET"); 605 if (target_base != nullptr) { 606 if (mount("tmpfs", target_base, "tmpfs", MS_NOSUID | MS_NODEV, 607 "uid=0,gid=1028,mode=0751") == -1) { 608 LOG(WARNING) << "Failed to mount tmpfs to " << target_base; 609 return false; 610 } 611 } 612 613 return true; 614#else 615 UNIMPLEMENTED(FATAL); 616 return false; 617#endif 618} 619 620void Runtime::DidForkFromZygote(JNIEnv* env, NativeBridgeAction action, const char* isa) { 621 is_zygote_ = false; 622 623 if (is_native_bridge_loaded_) { 624 switch (action) { 625 case NativeBridgeAction::kUnload: 626 UnloadNativeBridge(); 627 is_native_bridge_loaded_ = false; 628 break; 629 630 case NativeBridgeAction::kInitialize: 631 InitializeNativeBridge(env, isa); 632 break; 633 } 634 } 635 636 // Create the thread pools. 637 heap_->CreateThreadPool(); 638 if (jit_.get() == nullptr && jit_options_->UseJIT()) { 639 // Create the JIT if the flag is set and we haven't already create it (happens for run-tests). 640 CreateJit(); 641 } 642 643 StartSignalCatcher(); 644 645 // Start the JDWP thread. If the command-line debugger flags specified "suspend=y", 646 // this will pause the runtime, so we probably want this to come last. 647 Dbg::StartJdwp(); 648} 649 650void Runtime::StartSignalCatcher() { 651 if (!is_zygote_) { 652 signal_catcher_ = new SignalCatcher(stack_trace_file_); 653 } 654} 655 656bool Runtime::IsShuttingDown(Thread* self) { 657 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 658 return IsShuttingDownLocked(); 659} 660 661void Runtime::StartDaemonThreads() { 662 VLOG(startup) << "Runtime::StartDaemonThreads entering"; 663 664 Thread* self = Thread::Current(); 665 666 // Must be in the kNative state for calling native methods. 667 CHECK_EQ(self->GetState(), kNative); 668 669 JNIEnv* env = self->GetJniEnv(); 670 env->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 671 WellKnownClasses::java_lang_Daemons_start); 672 if (env->ExceptionCheck()) { 673 env->ExceptionDescribe(); 674 LOG(FATAL) << "Error starting java.lang.Daemons"; 675 } 676 677 VLOG(startup) << "Runtime::StartDaemonThreads exiting"; 678} 679 680static bool OpenDexFilesFromImage(const std::string& image_location, 681 std::vector<std::unique_ptr<const DexFile>>* dex_files, 682 size_t* failures) { 683 DCHECK(dex_files != nullptr) << "OpenDexFilesFromImage: out-param is nullptr"; 684 std::string system_filename; 685 bool has_system = false; 686 std::string cache_filename_unused; 687 bool dalvik_cache_exists_unused; 688 bool has_cache_unused; 689 bool is_global_cache_unused; 690 bool found_image = gc::space::ImageSpace::FindImageFilename(image_location.c_str(), 691 kRuntimeISA, 692 &system_filename, 693 &has_system, 694 &cache_filename_unused, 695 &dalvik_cache_exists_unused, 696 &has_cache_unused, 697 &is_global_cache_unused); 698 *failures = 0; 699 if (!found_image || !has_system) { 700 return false; 701 } 702 std::string error_msg; 703 // We are falling back to non-executable use of the oat file because patching failed, presumably 704 // due to lack of space. 705 std::string oat_filename = ImageHeader::GetOatLocationFromImageLocation(system_filename.c_str()); 706 std::string oat_location = ImageHeader::GetOatLocationFromImageLocation(image_location.c_str()); 707 std::unique_ptr<File> file(OS::OpenFileForReading(oat_filename.c_str())); 708 if (file.get() == nullptr) { 709 return false; 710 } 711 std::unique_ptr<ElfFile> elf_file(ElfFile::Open(file.release(), false, false, &error_msg)); 712 if (elf_file.get() == nullptr) { 713 return false; 714 } 715 std::unique_ptr<OatFile> oat_file(OatFile::OpenWithElfFile(elf_file.release(), oat_location, 716 nullptr, &error_msg)); 717 if (oat_file.get() == nullptr) { 718 LOG(INFO) << "Unable to use '" << oat_filename << "' because " << error_msg; 719 return false; 720 } 721 722 for (const OatFile::OatDexFile* oat_dex_file : oat_file->GetOatDexFiles()) { 723 if (oat_dex_file == nullptr) { 724 *failures += 1; 725 continue; 726 } 727 std::unique_ptr<const DexFile> dex_file = oat_dex_file->OpenDexFile(&error_msg); 728 if (dex_file.get() == nullptr) { 729 *failures += 1; 730 } else { 731 dex_files->push_back(std::move(dex_file)); 732 } 733 } 734 Runtime::Current()->GetClassLinker()->RegisterOatFile(oat_file.release()); 735 return true; 736} 737 738 739static size_t OpenDexFiles(const std::vector<std::string>& dex_filenames, 740 const std::vector<std::string>& dex_locations, 741 const std::string& image_location, 742 std::vector<std::unique_ptr<const DexFile>>* dex_files) { 743 DCHECK(dex_files != nullptr) << "OpenDexFiles: out-param is nullptr"; 744 size_t failure_count = 0; 745 if (!image_location.empty() && OpenDexFilesFromImage(image_location, dex_files, &failure_count)) { 746 return failure_count; 747 } 748 failure_count = 0; 749 for (size_t i = 0; i < dex_filenames.size(); i++) { 750 const char* dex_filename = dex_filenames[i].c_str(); 751 const char* dex_location = dex_locations[i].c_str(); 752 std::string error_msg; 753 if (!OS::FileExists(dex_filename)) { 754 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 755 continue; 756 } 757 if (!DexFile::Open(dex_filename, dex_location, &error_msg, dex_files)) { 758 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 759 ++failure_count; 760 } 761 } 762 return failure_count; 763} 764 765bool Runtime::Init(const RuntimeOptions& raw_options, bool ignore_unrecognized) { 766 CHECK_EQ(sysconf(_SC_PAGE_SIZE), kPageSize); 767 768 MemMap::Init(); 769 770 using Opt = RuntimeArgumentMap; 771 RuntimeArgumentMap runtime_options; 772 std::unique_ptr<ParsedOptions> parsed_options( 773 ParsedOptions::Create(raw_options, ignore_unrecognized, &runtime_options)); 774 if (parsed_options.get() == nullptr) { 775 LOG(ERROR) << "Failed to parse options"; 776 return false; 777 } 778 VLOG(startup) << "Runtime::Init -verbose:startup enabled"; 779 780 QuasiAtomic::Startup(); 781 782 Monitor::Init(runtime_options.GetOrDefault(Opt::LockProfThreshold), 783 runtime_options.GetOrDefault(Opt::HookIsSensitiveThread)); 784 785 boot_class_path_string_ = runtime_options.ReleaseOrDefault(Opt::BootClassPath); 786 class_path_string_ = runtime_options.ReleaseOrDefault(Opt::ClassPath); 787 properties_ = runtime_options.ReleaseOrDefault(Opt::PropertiesList); 788 789 compiler_callbacks_ = runtime_options.GetOrDefault(Opt::CompilerCallbacksPtr); 790 patchoat_executable_ = runtime_options.ReleaseOrDefault(Opt::PatchOat); 791 must_relocate_ = runtime_options.GetOrDefault(Opt::Relocate); 792 is_zygote_ = runtime_options.Exists(Opt::Zygote); 793 is_explicit_gc_disabled_ = runtime_options.Exists(Opt::DisableExplicitGC); 794 dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::Dex2Oat); 795 image_dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::ImageDex2Oat); 796 797 vfprintf_ = runtime_options.GetOrDefault(Opt::HookVfprintf); 798 exit_ = runtime_options.GetOrDefault(Opt::HookExit); 799 abort_ = runtime_options.GetOrDefault(Opt::HookAbort); 800 801 default_stack_size_ = runtime_options.GetOrDefault(Opt::StackSize); 802 stack_trace_file_ = runtime_options.ReleaseOrDefault(Opt::StackTraceFile); 803 804 compiler_executable_ = runtime_options.ReleaseOrDefault(Opt::Compiler); 805 compiler_options_ = runtime_options.ReleaseOrDefault(Opt::CompilerOptions); 806 image_compiler_options_ = runtime_options.ReleaseOrDefault(Opt::ImageCompilerOptions); 807 image_location_ = runtime_options.GetOrDefault(Opt::Image); 808 809 max_spins_before_thin_lock_inflation_ = 810 runtime_options.GetOrDefault(Opt::MaxSpinsBeforeThinLockInflation); 811 812 monitor_list_ = new MonitorList; 813 monitor_pool_ = MonitorPool::Create(); 814 thread_list_ = new ThreadList; 815 intern_table_ = new InternTable; 816 817 verify_ = runtime_options.GetOrDefault(Opt::Verify); 818 allow_dex_file_fallback_ = !runtime_options.Exists(Opt::NoDexFileFallback); 819 820 Split(runtime_options.GetOrDefault(Opt::CpuAbiList), ',', &cpu_abilist_); 821 822 if (runtime_options.GetOrDefault(Opt::Interpret)) { 823 GetInstrumentation()->ForceInterpretOnly(); 824 } 825 826 zygote_max_failed_boots_ = runtime_options.GetOrDefault(Opt::ZygoteMaxFailedBoots); 827 828 XGcOption xgc_option = runtime_options.GetOrDefault(Opt::GcOption); 829 heap_ = new gc::Heap(runtime_options.GetOrDefault(Opt::MemoryInitialSize), 830 runtime_options.GetOrDefault(Opt::HeapGrowthLimit), 831 runtime_options.GetOrDefault(Opt::HeapMinFree), 832 runtime_options.GetOrDefault(Opt::HeapMaxFree), 833 runtime_options.GetOrDefault(Opt::HeapTargetUtilization), 834 runtime_options.GetOrDefault(Opt::ForegroundHeapGrowthMultiplier), 835 runtime_options.GetOrDefault(Opt::MemoryMaximumSize), 836 runtime_options.GetOrDefault(Opt::NonMovingSpaceCapacity), 837 runtime_options.GetOrDefault(Opt::Image), 838 runtime_options.GetOrDefault(Opt::ImageInstructionSet), 839 xgc_option.collector_type_, 840 runtime_options.GetOrDefault(Opt::BackgroundGc), 841 runtime_options.GetOrDefault(Opt::LargeObjectSpace), 842 runtime_options.GetOrDefault(Opt::LargeObjectThreshold), 843 runtime_options.GetOrDefault(Opt::ParallelGCThreads), 844 runtime_options.GetOrDefault(Opt::ConcGCThreads), 845 runtime_options.Exists(Opt::LowMemoryMode), 846 runtime_options.GetOrDefault(Opt::LongPauseLogThreshold), 847 runtime_options.GetOrDefault(Opt::LongGCLogThreshold), 848 runtime_options.Exists(Opt::IgnoreMaxFootprint), 849 runtime_options.GetOrDefault(Opt::UseTLAB), 850 xgc_option.verify_pre_gc_heap_, 851 xgc_option.verify_pre_sweeping_heap_, 852 xgc_option.verify_post_gc_heap_, 853 xgc_option.verify_pre_gc_rosalloc_, 854 xgc_option.verify_pre_sweeping_rosalloc_, 855 xgc_option.verify_post_gc_rosalloc_, 856 runtime_options.GetOrDefault(Opt::EnableHSpaceCompactForOOM), 857 runtime_options.GetOrDefault(Opt::HSpaceCompactForOOMMinIntervalsMs)); 858 859 if (heap_->GetImageSpace() == nullptr && !allow_dex_file_fallback_) { 860 LOG(ERROR) << "Dex file fallback disabled, cannot continue without image."; 861 return false; 862 } 863 864 dump_gc_performance_on_shutdown_ = runtime_options.Exists(Opt::DumpGCPerformanceOnShutdown); 865 866 if (runtime_options.Exists(Opt::JdwpOptions)) { 867 Dbg::ConfigureJdwp(runtime_options.GetOrDefault(Opt::JdwpOptions)); 868 } 869 870 jit_options_.reset(jit::JitOptions::CreateFromRuntimeArguments(runtime_options)); 871 if (IsAotCompiler()) { 872 // If we are already the compiler at this point, we must be dex2oat. Don't create the jit in 873 // this case. 874 // If runtime_options doesn't have UseJIT set to true then CreateFromRuntimeArguments returns 875 // null and we don't create the jit. 876 jit_options_->SetUseJIT(false); 877 } 878 879 // Use MemMap arena pool for jit, malloc otherwise. Malloc arenas are faster to allocate but 880 // can't be trimmed as easily. 881 const bool use_malloc = IsAotCompiler(); 882 arena_pool_.reset(new ArenaPool(use_malloc, false)); 883 if (IsCompiler() && Is64BitInstructionSet(kRuntimeISA)) { 884 // 4gb, no malloc. Explanation in header. 885 low_4gb_arena_pool_.reset(new ArenaPool(false, true)); 886 linear_alloc_.reset(new LinearAlloc(low_4gb_arena_pool_.get())); 887 } else { 888 linear_alloc_.reset(new LinearAlloc(arena_pool_.get())); 889 } 890 891 BlockSignals(); 892 InitPlatformSignalHandlers(); 893 894 // Change the implicit checks flags based on runtime architecture. 895 switch (kRuntimeISA) { 896 case kArm: 897 case kThumb2: 898 case kX86: 899 case kArm64: 900 case kX86_64: 901 implicit_null_checks_ = true; 902 // Installing stack protection does not play well with valgrind. 903 implicit_so_checks_ = (RUNNING_ON_VALGRIND == 0); 904 break; 905 default: 906 // Keep the defaults. 907 break; 908 } 909 910 // Always initialize the signal chain so that any calls to sigaction get 911 // correctly routed to the next in the chain regardless of whether we 912 // have claimed the signal or not. 913 InitializeSignalChain(); 914 915 if (implicit_null_checks_ || implicit_so_checks_ || implicit_suspend_checks_) { 916 fault_manager.Init(); 917 918 // These need to be in a specific order. The null point check handler must be 919 // after the suspend check and stack overflow check handlers. 920 // 921 // Note: the instances attach themselves to the fault manager and are handled by it. The manager 922 // will delete the instance on Shutdown(). 923 if (implicit_suspend_checks_) { 924 new SuspensionHandler(&fault_manager); 925 } 926 927 if (implicit_so_checks_) { 928 new StackOverflowHandler(&fault_manager); 929 } 930 931 if (implicit_null_checks_) { 932 new NullPointerHandler(&fault_manager); 933 } 934 935 if (kEnableJavaStackTraceHandler) { 936 new JavaStackTraceHandler(&fault_manager); 937 } 938 } 939 940 java_vm_ = new JavaVMExt(this, runtime_options); 941 942 Thread::Startup(); 943 944 // ClassLinker needs an attached thread, but we can't fully attach a thread without creating 945 // objects. We can't supply a thread group yet; it will be fixed later. Since we are the main 946 // thread, we do not get a java peer. 947 Thread* self = Thread::Attach("main", false, nullptr, false); 948 CHECK_EQ(self->GetThreadId(), ThreadList::kMainThreadId); 949 CHECK(self != nullptr); 950 951 // Set us to runnable so tools using a runtime can allocate and GC by default 952 self->TransitionFromSuspendedToRunnable(); 953 954 // Now we're attached, we can take the heap locks and validate the heap. 955 GetHeap()->EnableObjectValidation(); 956 957 CHECK_GE(GetHeap()->GetContinuousSpaces().size(), 1U); 958 class_linker_ = new ClassLinker(intern_table_); 959 if (GetHeap()->HasImageSpace()) { 960 class_linker_->InitFromImage(); 961 if (kIsDebugBuild) { 962 GetHeap()->GetImageSpace()->VerifyImageAllocations(); 963 } 964 if (boot_class_path_string_.empty()) { 965 // The bootclasspath is not explicitly specified: construct it from the loaded dex files. 966 const std::vector<const DexFile*>& boot_class_path = GetClassLinker()->GetBootClassPath(); 967 std::vector<std::string> dex_locations; 968 dex_locations.reserve(boot_class_path.size()); 969 for (const DexFile* dex_file : boot_class_path) { 970 dex_locations.push_back(dex_file->GetLocation()); 971 } 972 boot_class_path_string_ = Join(dex_locations, ':'); 973 } 974 } else { 975 std::vector<std::string> dex_filenames; 976 Split(boot_class_path_string_, ':', &dex_filenames); 977 978 std::vector<std::string> dex_locations; 979 if (!runtime_options.Exists(Opt::BootClassPathLocations)) { 980 dex_locations = dex_filenames; 981 } else { 982 dex_locations = runtime_options.GetOrDefault(Opt::BootClassPathLocations); 983 CHECK_EQ(dex_filenames.size(), dex_locations.size()); 984 } 985 986 std::vector<std::unique_ptr<const DexFile>> boot_class_path; 987 OpenDexFiles(dex_filenames, 988 dex_locations, 989 runtime_options.GetOrDefault(Opt::Image), 990 &boot_class_path); 991 instruction_set_ = runtime_options.GetOrDefault(Opt::ImageInstructionSet); 992 class_linker_->InitWithoutImage(std::move(boot_class_path)); 993 994 // TODO: Should we move the following to InitWithoutImage? 995 SetInstructionSet(instruction_set_); 996 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 997 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 998 if (!HasCalleeSaveMethod(type)) { 999 SetCalleeSaveMethod(CreateCalleeSaveMethod(), type); 1000 } 1001 } 1002 } 1003 1004 CHECK(class_linker_ != nullptr); 1005 1006 // Initialize the special sentinel_ value early. 1007 sentinel_ = GcRoot<mirror::Object>(class_linker_->AllocObject(self)); 1008 CHECK(sentinel_.Read() != nullptr); 1009 1010 verifier::MethodVerifier::Init(); 1011 1012 if (runtime_options.Exists(Opt::MethodTrace)) { 1013 trace_config_.reset(new TraceConfig()); 1014 trace_config_->trace_file = runtime_options.ReleaseOrDefault(Opt::MethodTraceFile); 1015 trace_config_->trace_file_size = runtime_options.ReleaseOrDefault(Opt::MethodTraceFileSize); 1016 trace_config_->trace_mode = Trace::TraceMode::kMethodTracing; 1017 trace_config_->trace_output_mode = runtime_options.Exists(Opt::MethodTraceStreaming) ? 1018 Trace::TraceOutputMode::kStreaming : 1019 Trace::TraceOutputMode::kFile; 1020 } 1021 1022 { 1023 auto&& profiler_options = runtime_options.ReleaseOrDefault(Opt::ProfilerOpts); 1024 profile_output_filename_ = profiler_options.output_file_name_; 1025 1026 // TODO: Don't do this, just change ProfilerOptions to include the output file name? 1027 ProfilerOptions other_options( 1028 profiler_options.enabled_, 1029 profiler_options.period_s_, 1030 profiler_options.duration_s_, 1031 profiler_options.interval_us_, 1032 profiler_options.backoff_coefficient_, 1033 profiler_options.start_immediately_, 1034 profiler_options.top_k_threshold_, 1035 profiler_options.top_k_change_threshold_, 1036 profiler_options.profile_type_, 1037 profiler_options.max_stack_depth_); 1038 1039 profiler_options_ = other_options; 1040 } 1041 1042 // TODO: move this to just be an Trace::Start argument 1043 Trace::SetDefaultClockSource(runtime_options.GetOrDefault(Opt::ProfileClock)); 1044 1045 // Pre-allocate an OutOfMemoryError for the double-OOME case. 1046 self->ThrowNewException("Ljava/lang/OutOfMemoryError;", 1047 "OutOfMemoryError thrown while trying to throw OutOfMemoryError; " 1048 "no stack trace available"); 1049 pre_allocated_OutOfMemoryError_ = GcRoot<mirror::Throwable>(self->GetException()); 1050 self->ClearException(); 1051 1052 // Pre-allocate a NoClassDefFoundError for the common case of failing to find a system class 1053 // ahead of checking the application's class loader. 1054 self->ThrowNewException("Ljava/lang/NoClassDefFoundError;", 1055 "Class not found using the boot class loader; no stack trace available"); 1056 pre_allocated_NoClassDefFoundError_ = GcRoot<mirror::Throwable>(self->GetException()); 1057 self->ClearException(); 1058 1059 // Look for a native bridge. 1060 // 1061 // The intended flow here is, in the case of a running system: 1062 // 1063 // Runtime::Init() (zygote): 1064 // LoadNativeBridge -> dlopen from cmd line parameter. 1065 // | 1066 // V 1067 // Runtime::Start() (zygote): 1068 // No-op wrt native bridge. 1069 // | 1070 // | start app 1071 // V 1072 // DidForkFromZygote(action) 1073 // action = kUnload -> dlclose native bridge. 1074 // action = kInitialize -> initialize library 1075 // 1076 // 1077 // The intended flow here is, in the case of a simple dalvikvm call: 1078 // 1079 // Runtime::Init(): 1080 // LoadNativeBridge -> dlopen from cmd line parameter. 1081 // | 1082 // V 1083 // Runtime::Start(): 1084 // DidForkFromZygote(kInitialize) -> try to initialize any native bridge given. 1085 // No-op wrt native bridge. 1086 { 1087 std::string native_bridge_file_name = runtime_options.ReleaseOrDefault(Opt::NativeBridge); 1088 is_native_bridge_loaded_ = LoadNativeBridge(native_bridge_file_name); 1089 } 1090 1091 VLOG(startup) << "Runtime::Init exiting"; 1092 1093 return true; 1094} 1095 1096void Runtime::InitNativeMethods() { 1097 VLOG(startup) << "Runtime::InitNativeMethods entering"; 1098 Thread* self = Thread::Current(); 1099 JNIEnv* env = self->GetJniEnv(); 1100 1101 // Must be in the kNative state for calling native methods (JNI_OnLoad code). 1102 CHECK_EQ(self->GetState(), kNative); 1103 1104 // First set up JniConstants, which is used by both the runtime's built-in native 1105 // methods and libcore. 1106 JniConstants::init(env); 1107 WellKnownClasses::Init(env); 1108 1109 // Then set up the native methods provided by the runtime itself. 1110 RegisterRuntimeNativeMethods(env); 1111 1112 // Then set up libcore, which is just a regular JNI library with a regular JNI_OnLoad. 1113 // Most JNI libraries can just use System.loadLibrary, but libcore can't because it's 1114 // the library that implements System.loadLibrary! 1115 { 1116 std::string reason; 1117 if (!java_vm_->LoadNativeLibrary(env, "libjavacore.so", nullptr, &reason)) { 1118 LOG(FATAL) << "LoadNativeLibrary failed for \"libjavacore.so\": " << reason; 1119 } 1120 } 1121 1122 // Initialize well known classes that may invoke runtime native methods. 1123 WellKnownClasses::LateInit(env); 1124 1125 VLOG(startup) << "Runtime::InitNativeMethods exiting"; 1126} 1127 1128void Runtime::InitThreadGroups(Thread* self) { 1129 JNIEnvExt* env = self->GetJniEnv(); 1130 ScopedJniEnvLocalRefState env_state(env); 1131 main_thread_group_ = 1132 env->NewGlobalRef(env->GetStaticObjectField( 1133 WellKnownClasses::java_lang_ThreadGroup, 1134 WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup)); 1135 CHECK(main_thread_group_ != nullptr || IsAotCompiler()); 1136 system_thread_group_ = 1137 env->NewGlobalRef(env->GetStaticObjectField( 1138 WellKnownClasses::java_lang_ThreadGroup, 1139 WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup)); 1140 CHECK(system_thread_group_ != nullptr || IsAotCompiler()); 1141} 1142 1143jobject Runtime::GetMainThreadGroup() const { 1144 CHECK(main_thread_group_ != nullptr || IsAotCompiler()); 1145 return main_thread_group_; 1146} 1147 1148jobject Runtime::GetSystemThreadGroup() const { 1149 CHECK(system_thread_group_ != nullptr || IsAotCompiler()); 1150 return system_thread_group_; 1151} 1152 1153jobject Runtime::GetSystemClassLoader() const { 1154 CHECK(system_class_loader_ != nullptr || IsAotCompiler()); 1155 return system_class_loader_; 1156} 1157 1158void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) { 1159 register_dalvik_system_DexFile(env); 1160 register_dalvik_system_VMDebug(env); 1161 register_dalvik_system_VMRuntime(env); 1162 register_dalvik_system_VMStack(env); 1163 register_dalvik_system_ZygoteHooks(env); 1164 register_java_lang_Class(env); 1165 register_java_lang_DexCache(env); 1166 register_java_lang_Object(env); 1167 register_java_lang_ref_FinalizerReference(env); 1168 register_java_lang_reflect_Array(env); 1169 register_java_lang_reflect_Constructor(env); 1170 register_java_lang_reflect_Field(env); 1171 register_java_lang_reflect_Method(env); 1172 register_java_lang_reflect_Proxy(env); 1173 register_java_lang_ref_Reference(env); 1174 register_java_lang_Runtime(env); 1175 register_java_lang_String(env); 1176 register_java_lang_StringFactory(env); 1177 register_java_lang_System(env); 1178 register_java_lang_Thread(env); 1179 register_java_lang_Throwable(env); 1180 register_java_lang_VMClassLoader(env); 1181 register_java_util_concurrent_atomic_AtomicLong(env); 1182 register_libcore_util_CharsetUtils(env); 1183 register_org_apache_harmony_dalvik_ddmc_DdmServer(env); 1184 register_org_apache_harmony_dalvik_ddmc_DdmVmInternal(env); 1185 register_sun_misc_Unsafe(env); 1186} 1187 1188void Runtime::DumpForSigQuit(std::ostream& os) { 1189 GetClassLinker()->DumpForSigQuit(os); 1190 GetInternTable()->DumpForSigQuit(os); 1191 GetJavaVM()->DumpForSigQuit(os); 1192 GetHeap()->DumpForSigQuit(os); 1193 TrackedAllocators::Dump(os); 1194 os << "\n"; 1195 1196 thread_list_->DumpForSigQuit(os); 1197 BaseMutex::DumpAll(os); 1198} 1199 1200void Runtime::DumpLockHolders(std::ostream& os) { 1201 uint64_t mutator_lock_owner = Locks::mutator_lock_->GetExclusiveOwnerTid(); 1202 pid_t thread_list_lock_owner = GetThreadList()->GetLockOwner(); 1203 pid_t classes_lock_owner = GetClassLinker()->GetClassesLockOwner(); 1204 pid_t dex_lock_owner = GetClassLinker()->GetDexLockOwner(); 1205 if ((thread_list_lock_owner | classes_lock_owner | dex_lock_owner) != 0) { 1206 os << "Mutator lock exclusive owner tid: " << mutator_lock_owner << "\n" 1207 << "ThreadList lock owner tid: " << thread_list_lock_owner << "\n" 1208 << "ClassLinker classes lock owner tid: " << classes_lock_owner << "\n" 1209 << "ClassLinker dex lock owner tid: " << dex_lock_owner << "\n"; 1210 } 1211} 1212 1213void Runtime::SetStatsEnabled(bool new_state) { 1214 Thread* self = Thread::Current(); 1215 MutexLock mu(self, *Locks::instrument_entrypoints_lock_); 1216 if (new_state == true) { 1217 GetStats()->Clear(~0); 1218 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1219 self->GetStats()->Clear(~0); 1220 if (stats_enabled_ != new_state) { 1221 GetInstrumentation()->InstrumentQuickAllocEntryPointsLocked(); 1222 } 1223 } else if (stats_enabled_ != new_state) { 1224 GetInstrumentation()->UninstrumentQuickAllocEntryPointsLocked(); 1225 } 1226 stats_enabled_ = new_state; 1227} 1228 1229void Runtime::ResetStats(int kinds) { 1230 GetStats()->Clear(kinds & 0xffff); 1231 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1232 Thread::Current()->GetStats()->Clear(kinds >> 16); 1233} 1234 1235int32_t Runtime::GetStat(int kind) { 1236 RuntimeStats* stats; 1237 if (kind < (1<<16)) { 1238 stats = GetStats(); 1239 } else { 1240 stats = Thread::Current()->GetStats(); 1241 kind >>= 16; 1242 } 1243 switch (kind) { 1244 case KIND_ALLOCATED_OBJECTS: 1245 return stats->allocated_objects; 1246 case KIND_ALLOCATED_BYTES: 1247 return stats->allocated_bytes; 1248 case KIND_FREED_OBJECTS: 1249 return stats->freed_objects; 1250 case KIND_FREED_BYTES: 1251 return stats->freed_bytes; 1252 case KIND_GC_INVOCATIONS: 1253 return stats->gc_for_alloc_count; 1254 case KIND_CLASS_INIT_COUNT: 1255 return stats->class_init_count; 1256 case KIND_CLASS_INIT_TIME: 1257 // Convert ns to us, reduce to 32 bits. 1258 return static_cast<int>(stats->class_init_time_ns / 1000); 1259 case KIND_EXT_ALLOCATED_OBJECTS: 1260 case KIND_EXT_ALLOCATED_BYTES: 1261 case KIND_EXT_FREED_OBJECTS: 1262 case KIND_EXT_FREED_BYTES: 1263 return 0; // backward compatibility 1264 default: 1265 LOG(FATAL) << "Unknown statistic " << kind; 1266 return -1; // unreachable 1267 } 1268} 1269 1270void Runtime::BlockSignals() { 1271 SignalSet signals; 1272 signals.Add(SIGPIPE); 1273 // SIGQUIT is used to dump the runtime's state (including stack traces). 1274 signals.Add(SIGQUIT); 1275 // SIGUSR1 is used to initiate a GC. 1276 signals.Add(SIGUSR1); 1277 signals.Block(); 1278} 1279 1280bool Runtime::AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group, 1281 bool create_peer) { 1282 return Thread::Attach(thread_name, as_daemon, thread_group, create_peer) != nullptr; 1283} 1284 1285void Runtime::DetachCurrentThread() { 1286 Thread* self = Thread::Current(); 1287 if (self == nullptr) { 1288 LOG(FATAL) << "attempting to detach thread that is not attached"; 1289 } 1290 if (self->HasManagedStack()) { 1291 LOG(FATAL) << *Thread::Current() << " attempting to detach while still running code"; 1292 } 1293 thread_list_->Unregister(self); 1294} 1295 1296mirror::Throwable* Runtime::GetPreAllocatedOutOfMemoryError() { 1297 mirror::Throwable* oome = pre_allocated_OutOfMemoryError_.Read(); 1298 if (oome == nullptr) { 1299 LOG(ERROR) << "Failed to return pre-allocated OOME"; 1300 } 1301 return oome; 1302} 1303 1304mirror::Throwable* Runtime::GetPreAllocatedNoClassDefFoundError() { 1305 mirror::Throwable* ncdfe = pre_allocated_NoClassDefFoundError_.Read(); 1306 if (ncdfe == nullptr) { 1307 LOG(ERROR) << "Failed to return pre-allocated NoClassDefFoundError"; 1308 } 1309 return ncdfe; 1310} 1311 1312void Runtime::VisitConstantRoots(RootVisitor* visitor) { 1313 // Visit the classes held as static in mirror classes, these can be visited concurrently and only 1314 // need to be visited once per GC since they never change. 1315 mirror::Class::VisitRoots(visitor); 1316 mirror::Constructor::VisitRoots(visitor); 1317 mirror::Reference::VisitRoots(visitor); 1318 mirror::Method::VisitRoots(visitor); 1319 mirror::StackTraceElement::VisitRoots(visitor); 1320 mirror::String::VisitRoots(visitor); 1321 mirror::Throwable::VisitRoots(visitor); 1322 mirror::Field::VisitRoots(visitor); 1323 // Visit all the primitive array types classes. 1324 mirror::PrimitiveArray<uint8_t>::VisitRoots(visitor); // BooleanArray 1325 mirror::PrimitiveArray<int8_t>::VisitRoots(visitor); // ByteArray 1326 mirror::PrimitiveArray<uint16_t>::VisitRoots(visitor); // CharArray 1327 mirror::PrimitiveArray<double>::VisitRoots(visitor); // DoubleArray 1328 mirror::PrimitiveArray<float>::VisitRoots(visitor); // FloatArray 1329 mirror::PrimitiveArray<int32_t>::VisitRoots(visitor); // IntArray 1330 mirror::PrimitiveArray<int64_t>::VisitRoots(visitor); // LongArray 1331 mirror::PrimitiveArray<int16_t>::VisitRoots(visitor); // ShortArray 1332 // Visiting the roots of these ArtMethods is not currently required since all the GcRoots are 1333 // null. 1334 BufferedRootVisitor<16> buffered_visitor(visitor, RootInfo(kRootVMInternal)); 1335 if (HasResolutionMethod()) { 1336 resolution_method_->VisitRoots(buffered_visitor); 1337 } 1338 if (HasImtConflictMethod()) { 1339 imt_conflict_method_->VisitRoots(buffered_visitor); 1340 } 1341 if (imt_unimplemented_method_ != nullptr) { 1342 imt_unimplemented_method_->VisitRoots(buffered_visitor); 1343 } 1344 for (size_t i = 0; i < kLastCalleeSaveType; ++i) { 1345 auto* m = reinterpret_cast<ArtMethod*>(callee_save_methods_[i]); 1346 if (m != nullptr) { 1347 m->VisitRoots(buffered_visitor); 1348 } 1349 } 1350} 1351 1352void Runtime::VisitConcurrentRoots(RootVisitor* visitor, VisitRootFlags flags) { 1353 intern_table_->VisitRoots(visitor, flags); 1354 class_linker_->VisitRoots(visitor, flags); 1355 if ((flags & kVisitRootFlagNewRoots) == 0) { 1356 // Guaranteed to have no new roots in the constant roots. 1357 VisitConstantRoots(visitor); 1358 } 1359} 1360 1361void Runtime::VisitTransactionRoots(RootVisitor* visitor) { 1362 if (preinitialization_transaction_ != nullptr) { 1363 preinitialization_transaction_->VisitRoots(visitor); 1364 } 1365} 1366 1367void Runtime::VisitNonThreadRoots(RootVisitor* visitor) { 1368 java_vm_->VisitRoots(visitor); 1369 sentinel_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1370 pre_allocated_OutOfMemoryError_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1371 pre_allocated_NoClassDefFoundError_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1372 verifier::MethodVerifier::VisitStaticRoots(visitor); 1373 VisitTransactionRoots(visitor); 1374} 1375 1376void Runtime::VisitNonConcurrentRoots(RootVisitor* visitor) { 1377 thread_list_->VisitRoots(visitor); 1378 VisitNonThreadRoots(visitor); 1379} 1380 1381void Runtime::VisitThreadRoots(RootVisitor* visitor) { 1382 thread_list_->VisitRoots(visitor); 1383} 1384 1385size_t Runtime::FlipThreadRoots(Closure* thread_flip_visitor, Closure* flip_callback, 1386 gc::collector::GarbageCollector* collector) { 1387 return thread_list_->FlipThreadRoots(thread_flip_visitor, flip_callback, collector); 1388} 1389 1390void Runtime::VisitRoots(RootVisitor* visitor, VisitRootFlags flags) { 1391 VisitNonConcurrentRoots(visitor); 1392 VisitConcurrentRoots(visitor, flags); 1393} 1394 1395void Runtime::VisitImageRoots(RootVisitor* visitor) { 1396 for (auto* space : GetHeap()->GetContinuousSpaces()) { 1397 if (space->IsImageSpace()) { 1398 auto* image_space = space->AsImageSpace(); 1399 const auto& image_header = image_space->GetImageHeader(); 1400 for (size_t i = 0; i < ImageHeader::kImageRootsMax; ++i) { 1401 auto* obj = image_header.GetImageRoot(static_cast<ImageHeader::ImageRoot>(i)); 1402 if (obj != nullptr) { 1403 auto* after_obj = obj; 1404 visitor->VisitRoot(&after_obj, RootInfo(kRootStickyClass)); 1405 CHECK_EQ(after_obj, obj); 1406 } 1407 } 1408 } 1409 } 1410} 1411 1412ArtMethod* Runtime::CreateImtConflictMethod() { 1413 auto* method = Runtime::Current()->GetClassLinker()->CreateRuntimeMethod(); 1414 // When compiling, the code pointer will get set later when the image is loaded. 1415 if (IsAotCompiler()) { 1416 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1417 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1418 } else { 1419 method->SetEntryPointFromQuickCompiledCode(GetQuickImtConflictStub()); 1420 } 1421 return method; 1422} 1423 1424void Runtime::SetImtConflictMethod(ArtMethod* method) { 1425 CHECK(method != nullptr); 1426 CHECK(method->IsRuntimeMethod()); 1427 imt_conflict_method_ = method; 1428} 1429 1430ArtMethod* Runtime::CreateResolutionMethod() { 1431 auto* method = Runtime::Current()->GetClassLinker()->CreateRuntimeMethod(); 1432 // When compiling, the code pointer will get set later when the image is loaded. 1433 if (IsAotCompiler()) { 1434 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1435 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1436 } else { 1437 method->SetEntryPointFromQuickCompiledCode(GetQuickResolutionStub()); 1438 } 1439 return method; 1440} 1441 1442ArtMethod* Runtime::CreateCalleeSaveMethod() { 1443 auto* method = Runtime::Current()->GetClassLinker()->CreateRuntimeMethod(); 1444 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1445 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1446 DCHECK_NE(instruction_set_, kNone); 1447 DCHECK(method->IsRuntimeMethod()); 1448 return method; 1449} 1450 1451void Runtime::DisallowNewSystemWeaks() { 1452 monitor_list_->DisallowNewMonitors(); 1453 intern_table_->DisallowNewInterns(); 1454 java_vm_->DisallowNewWeakGlobals(); 1455} 1456 1457void Runtime::AllowNewSystemWeaks() { 1458 monitor_list_->AllowNewMonitors(); 1459 intern_table_->AllowNewInterns(); 1460 java_vm_->AllowNewWeakGlobals(); 1461} 1462 1463void Runtime::EnsureNewSystemWeaksDisallowed() { 1464 // Lock and unlock the system weak locks once to ensure that no 1465 // threads are still in the middle of adding new system weaks. 1466 monitor_list_->EnsureNewMonitorsDisallowed(); 1467 intern_table_->EnsureNewInternsDisallowed(); 1468 java_vm_->EnsureNewWeakGlobalsDisallowed(); 1469} 1470 1471void Runtime::SetInstructionSet(InstructionSet instruction_set) { 1472 instruction_set_ = instruction_set; 1473 if ((instruction_set_ == kThumb2) || (instruction_set_ == kArm)) { 1474 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1475 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1476 callee_save_method_frame_infos_[i] = arm::ArmCalleeSaveMethodFrameInfo(type); 1477 } 1478 } else if (instruction_set_ == kMips) { 1479 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1480 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1481 callee_save_method_frame_infos_[i] = mips::MipsCalleeSaveMethodFrameInfo(type); 1482 } 1483 } else if (instruction_set_ == kMips64) { 1484 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1485 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1486 callee_save_method_frame_infos_[i] = mips64::Mips64CalleeSaveMethodFrameInfo(type); 1487 } 1488 } else if (instruction_set_ == kX86) { 1489 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1490 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1491 callee_save_method_frame_infos_[i] = x86::X86CalleeSaveMethodFrameInfo(type); 1492 } 1493 } else if (instruction_set_ == kX86_64) { 1494 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1495 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1496 callee_save_method_frame_infos_[i] = x86_64::X86_64CalleeSaveMethodFrameInfo(type); 1497 } 1498 } else if (instruction_set_ == kArm64) { 1499 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1500 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1501 callee_save_method_frame_infos_[i] = arm64::Arm64CalleeSaveMethodFrameInfo(type); 1502 } 1503 } else { 1504 UNIMPLEMENTED(FATAL) << instruction_set_; 1505 } 1506} 1507 1508void Runtime::SetCalleeSaveMethod(ArtMethod* method, CalleeSaveType type) { 1509 DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType)); 1510 CHECK(method != nullptr); 1511 callee_save_methods_[type] = reinterpret_cast<uintptr_t>(method); 1512} 1513 1514void Runtime::StartProfiler(const char* profile_output_filename) { 1515 profile_output_filename_ = profile_output_filename; 1516 profiler_started_ = 1517 BackgroundMethodSamplingProfiler::Start(profile_output_filename_, profiler_options_); 1518} 1519 1520// Transaction support. 1521void Runtime::EnterTransactionMode(Transaction* transaction) { 1522 DCHECK(IsAotCompiler()); 1523 DCHECK(transaction != nullptr); 1524 DCHECK(!IsActiveTransaction()); 1525 preinitialization_transaction_ = transaction; 1526} 1527 1528void Runtime::ExitTransactionMode() { 1529 DCHECK(IsAotCompiler()); 1530 DCHECK(IsActiveTransaction()); 1531 preinitialization_transaction_ = nullptr; 1532} 1533 1534bool Runtime::IsTransactionAborted() const { 1535 if (!IsActiveTransaction()) { 1536 return false; 1537 } else { 1538 DCHECK(IsAotCompiler()); 1539 return preinitialization_transaction_->IsAborted(); 1540 } 1541} 1542 1543void Runtime::AbortTransactionAndThrowAbortError(Thread* self, const std::string& abort_message) { 1544 DCHECK(IsAotCompiler()); 1545 DCHECK(IsActiveTransaction()); 1546 // Throwing an exception may cause its class initialization. If we mark the transaction 1547 // aborted before that, we may warn with a false alarm. Throwing the exception before 1548 // marking the transaction aborted avoids that. 1549 preinitialization_transaction_->ThrowAbortError(self, &abort_message); 1550 preinitialization_transaction_->Abort(abort_message); 1551} 1552 1553void Runtime::ThrowTransactionAbortError(Thread* self) { 1554 DCHECK(IsAotCompiler()); 1555 DCHECK(IsActiveTransaction()); 1556 // Passing nullptr means we rethrow an exception with the earlier transaction abort message. 1557 preinitialization_transaction_->ThrowAbortError(self, nullptr); 1558} 1559 1560void Runtime::RecordWriteFieldBoolean(mirror::Object* obj, MemberOffset field_offset, 1561 uint8_t value, bool is_volatile) const { 1562 DCHECK(IsAotCompiler()); 1563 DCHECK(IsActiveTransaction()); 1564 preinitialization_transaction_->RecordWriteFieldBoolean(obj, field_offset, value, is_volatile); 1565} 1566 1567void Runtime::RecordWriteFieldByte(mirror::Object* obj, MemberOffset field_offset, 1568 int8_t value, bool is_volatile) const { 1569 DCHECK(IsAotCompiler()); 1570 DCHECK(IsActiveTransaction()); 1571 preinitialization_transaction_->RecordWriteFieldByte(obj, field_offset, value, is_volatile); 1572} 1573 1574void Runtime::RecordWriteFieldChar(mirror::Object* obj, MemberOffset field_offset, 1575 uint16_t value, bool is_volatile) const { 1576 DCHECK(IsAotCompiler()); 1577 DCHECK(IsActiveTransaction()); 1578 preinitialization_transaction_->RecordWriteFieldChar(obj, field_offset, value, is_volatile); 1579} 1580 1581void Runtime::RecordWriteFieldShort(mirror::Object* obj, MemberOffset field_offset, 1582 int16_t value, bool is_volatile) const { 1583 DCHECK(IsAotCompiler()); 1584 DCHECK(IsActiveTransaction()); 1585 preinitialization_transaction_->RecordWriteFieldShort(obj, field_offset, value, is_volatile); 1586} 1587 1588void Runtime::RecordWriteField32(mirror::Object* obj, MemberOffset field_offset, 1589 uint32_t value, bool is_volatile) const { 1590 DCHECK(IsAotCompiler()); 1591 DCHECK(IsActiveTransaction()); 1592 preinitialization_transaction_->RecordWriteField32(obj, field_offset, value, is_volatile); 1593} 1594 1595void Runtime::RecordWriteField64(mirror::Object* obj, MemberOffset field_offset, 1596 uint64_t value, bool is_volatile) const { 1597 DCHECK(IsAotCompiler()); 1598 DCHECK(IsActiveTransaction()); 1599 preinitialization_transaction_->RecordWriteField64(obj, field_offset, value, is_volatile); 1600} 1601 1602void Runtime::RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset, 1603 mirror::Object* value, bool is_volatile) const { 1604 DCHECK(IsAotCompiler()); 1605 DCHECK(IsActiveTransaction()); 1606 preinitialization_transaction_->RecordWriteFieldReference(obj, field_offset, value, is_volatile); 1607} 1608 1609void Runtime::RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const { 1610 DCHECK(IsAotCompiler()); 1611 DCHECK(IsActiveTransaction()); 1612 preinitialization_transaction_->RecordWriteArray(array, index, value); 1613} 1614 1615void Runtime::RecordStrongStringInsertion(mirror::String* s) const { 1616 DCHECK(IsAotCompiler()); 1617 DCHECK(IsActiveTransaction()); 1618 preinitialization_transaction_->RecordStrongStringInsertion(s); 1619} 1620 1621void Runtime::RecordWeakStringInsertion(mirror::String* s) const { 1622 DCHECK(IsAotCompiler()); 1623 DCHECK(IsActiveTransaction()); 1624 preinitialization_transaction_->RecordWeakStringInsertion(s); 1625} 1626 1627void Runtime::RecordStrongStringRemoval(mirror::String* s) const { 1628 DCHECK(IsAotCompiler()); 1629 DCHECK(IsActiveTransaction()); 1630 preinitialization_transaction_->RecordStrongStringRemoval(s); 1631} 1632 1633void Runtime::RecordWeakStringRemoval(mirror::String* s) const { 1634 DCHECK(IsAotCompiler()); 1635 DCHECK(IsActiveTransaction()); 1636 preinitialization_transaction_->RecordWeakStringRemoval(s); 1637} 1638 1639void Runtime::SetFaultMessage(const std::string& message) { 1640 MutexLock mu(Thread::Current(), fault_message_lock_); 1641 fault_message_ = message; 1642} 1643 1644void Runtime::AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* argv) 1645 const { 1646 if (GetInstrumentation()->InterpretOnly() || UseJit()) { 1647 argv->push_back("--compiler-filter=interpret-only"); 1648 } 1649 1650 // Make the dex2oat instruction set match that of the launching runtime. If we have multiple 1651 // architecture support, dex2oat may be compiled as a different instruction-set than that 1652 // currently being executed. 1653 std::string instruction_set("--instruction-set="); 1654 instruction_set += GetInstructionSetString(kRuntimeISA); 1655 argv->push_back(instruction_set); 1656 1657 std::unique_ptr<const InstructionSetFeatures> features(InstructionSetFeatures::FromCppDefines()); 1658 std::string feature_string("--instruction-set-features="); 1659 feature_string += features->GetFeatureString(); 1660 argv->push_back(feature_string); 1661} 1662 1663void Runtime::UpdateProfilerState(int state) { 1664 VLOG(profiler) << "Profiler state updated to " << state; 1665} 1666 1667void Runtime::CreateJit() { 1668 CHECK(!IsAotCompiler()); 1669 if (GetInstrumentation()->IsForcedInterpretOnly()) { 1670 // Don't create JIT if forced interpret only. 1671 return; 1672 } 1673 std::string error_msg; 1674 jit_.reset(jit::Jit::Create(jit_options_.get(), &error_msg)); 1675 if (jit_.get() != nullptr) { 1676 compiler_callbacks_ = jit_->GetCompilerCallbacks(); 1677 jit_->CreateInstrumentationCache(jit_options_->GetCompileThreshold()); 1678 jit_->CreateThreadPool(); 1679 } else { 1680 LOG(WARNING) << "Failed to create JIT " << error_msg; 1681 } 1682} 1683 1684bool Runtime::CanRelocate() const { 1685 return !IsAotCompiler() || compiler_callbacks_->IsRelocationPossible(); 1686} 1687 1688bool Runtime::IsCompilingBootImage() const { 1689 return IsCompiler() && compiler_callbacks_->IsBootImage(); 1690} 1691 1692void Runtime::SetResolutionMethod(ArtMethod* method) { 1693 CHECK(method != nullptr); 1694 CHECK(method->IsRuntimeMethod()) << method; 1695 resolution_method_ = method; 1696} 1697 1698void Runtime::SetImtUnimplementedMethod(ArtMethod* method) { 1699 CHECK(method != nullptr); 1700 CHECK(method->IsRuntimeMethod()); 1701 imt_unimplemented_method_ = method; 1702} 1703 1704} // namespace art 1705