runtime.cc revision 461687d898dfd91253f242072849a9fe43e5f523
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 "asm_support.h" 52#include "atomic.h" 53#include "base/arena_allocator.h" 54#include "base/dumpable.h" 55#include "base/unix_file/fd_file.h" 56#include "class_linker.h" 57#include "compiler_callbacks.h" 58#include "debugger.h" 59#include "elf_file.h" 60#include "entrypoints/runtime_asm_entrypoints.h" 61#include "fault_handler.h" 62#include "gc/accounting/card_table-inl.h" 63#include "gc/heap.h" 64#include "gc/space/image_space.h" 65#include "gc/space/space-inl.h" 66#include "handle_scope-inl.h" 67#include "image.h" 68#include "instrumentation.h" 69#include "intern_table.h" 70#include "interpreter/interpreter.h" 71#include "jit/jit.h" 72#include "jni_internal.h" 73#include "mirror/array.h" 74#include "mirror/art_field-inl.h" 75#include "mirror/art_method-inl.h" 76#include "mirror/class-inl.h" 77#include "mirror/class_loader.h" 78#include "mirror/field.h" 79#include "mirror/stack_trace_element.h" 80#include "mirror/throwable.h" 81#include "monitor.h" 82#include "native/dalvik_system_DexFile.h" 83#include "native/dalvik_system_VMDebug.h" 84#include "native/dalvik_system_VMRuntime.h" 85#include "native/dalvik_system_VMStack.h" 86#include "native/dalvik_system_ZygoteHooks.h" 87#include "native/java_lang_Class.h" 88#include "native/java_lang_DexCache.h" 89#include "native/java_lang_Object.h" 90#include "native/java_lang_Runtime.h" 91#include "native/java_lang_String.h" 92#include "native/java_lang_System.h" 93#include "native/java_lang_Thread.h" 94#include "native/java_lang_Throwable.h" 95#include "native/java_lang_VMClassLoader.h" 96#include "native/java_lang_ref_FinalizerReference.h" 97#include "native/java_lang_ref_Reference.h" 98#include "native/java_lang_reflect_Array.h" 99#include "native/java_lang_reflect_Constructor.h" 100#include "native/java_lang_reflect_Field.h" 101#include "native/java_lang_reflect_Method.h" 102#include "native/java_lang_reflect_Proxy.h" 103#include "native/java_util_concurrent_atomic_AtomicLong.h" 104#include "native/org_apache_harmony_dalvik_ddmc_DdmServer.h" 105#include "native/org_apache_harmony_dalvik_ddmc_DdmVmInternal.h" 106#include "native/sun_misc_Unsafe.h" 107#include "native_bridge_art_interface.h" 108#include "oat_file.h" 109#include "os.h" 110#include "parsed_options.h" 111#include "profiler.h" 112#include "quick/quick_method_frame_info.h" 113#include "reflection.h" 114#include "runtime_options.h" 115#include "ScopedLocalRef.h" 116#include "scoped_thread_state_change.h" 117#include "sigchain.h" 118#include "signal_catcher.h" 119#include "signal_set.h" 120#include "thread.h" 121#include "thread_list.h" 122#include "trace.h" 123#include "transaction.h" 124#include "verifier/method_verifier.h" 125#include "well_known_classes.h" 126 127namespace art { 128 129// If a signal isn't handled properly, enable a handler that attempts to dump the Java stack. 130static constexpr bool kEnableJavaStackTraceHandler = false; 131Runtime* Runtime::instance_ = nullptr; 132 133Runtime::Runtime() 134 : instruction_set_(kNone), 135 compiler_callbacks_(nullptr), 136 is_zygote_(false), 137 must_relocate_(false), 138 is_concurrent_gc_enabled_(true), 139 is_explicit_gc_disabled_(false), 140 dex2oat_enabled_(true), 141 image_dex2oat_enabled_(true), 142 default_stack_size_(0), 143 heap_(nullptr), 144 max_spins_before_thin_lock_inflation_(Monitor::kDefaultMaxSpinsBeforeThinLockInflation), 145 monitor_list_(nullptr), 146 monitor_pool_(nullptr), 147 thread_list_(nullptr), 148 intern_table_(nullptr), 149 class_linker_(nullptr), 150 signal_catcher_(nullptr), 151 java_vm_(nullptr), 152 fault_message_lock_("Fault message lock"), 153 fault_message_(""), 154 threads_being_born_(0), 155 shutdown_cond_(new ConditionVariable("Runtime shutdown", *Locks::runtime_shutdown_lock_)), 156 shutting_down_(false), 157 shutting_down_started_(false), 158 started_(false), 159 finished_starting_(false), 160 vfprintf_(nullptr), 161 exit_(nullptr), 162 abort_(nullptr), 163 stats_enabled_(false), 164 running_on_valgrind_(RUNNING_ON_VALGRIND > 0), 165 profiler_started_(false), 166 method_trace_(false), 167 method_trace_file_size_(0), 168 instrumentation_(), 169 main_thread_group_(nullptr), 170 system_thread_group_(nullptr), 171 system_class_loader_(nullptr), 172 dump_gc_performance_on_shutdown_(false), 173 preinitialization_transaction_(nullptr), 174 verify_(false), 175 allow_dex_file_fallback_(true), 176 target_sdk_version_(0), 177 implicit_null_checks_(false), 178 implicit_so_checks_(false), 179 implicit_suspend_checks_(false), 180 is_native_bridge_loaded_(false), 181 zygote_max_failed_boots_(0) { 182 CheckAsmSupportOffsetsAndSizes(); 183} 184 185Runtime::~Runtime() { 186 if (is_native_bridge_loaded_) { 187 UnloadNativeBridge(); 188 } 189 if (dump_gc_performance_on_shutdown_) { 190 // This can't be called from the Heap destructor below because it 191 // could call RosAlloc::InspectAll() which needs the thread_list 192 // to be still alive. 193 heap_->DumpGcPerformanceInfo(LOG(INFO)); 194 } 195 196 Thread* self = Thread::Current(); 197 const bool attach_shutdown_thread = self == nullptr; 198 if (attach_shutdown_thread) { 199 CHECK(AttachCurrentThread("Shutdown thread", false, nullptr, false)); 200 self = Thread::Current(); 201 } else { 202 LOG(WARNING) << "Current thread not detached in Runtime shutdown"; 203 } 204 205 { 206 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 207 shutting_down_started_ = true; 208 while (threads_being_born_ > 0) { 209 shutdown_cond_->Wait(self); 210 } 211 shutting_down_ = true; 212 } 213 // Shutdown and wait for the daemons. 214 CHECK(self != nullptr); 215 if (IsFinishedStarting()) { 216 self->ClearException(); 217 self->GetJniEnv()->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 218 WellKnownClasses::java_lang_Daemons_stop); 219 } 220 if (attach_shutdown_thread) { 221 DetachCurrentThread(); 222 self = nullptr; 223 } 224 225 // Shut down background profiler before the runtime exits. 226 if (profiler_started_) { 227 BackgroundMethodSamplingProfiler::Shutdown(); 228 } 229 230 Trace::Shutdown(); 231 232 // Make sure to let the GC complete if it is running. 233 heap_->WaitForGcToComplete(gc::kGcCauseBackground, self); 234 heap_->DeleteThreadPool(); 235 if (jit_.get() != nullptr) { 236 VLOG(jit) << "Deleting jit thread pool"; 237 // Delete thread pool before the thread list since we don't want to wait forever on the 238 // JIT compiler threads. 239 jit_->DeleteThreadPool(); 240 } 241 242 // Make sure our internal threads are dead before we start tearing down things they're using. 243 Dbg::StopJdwp(); 244 delete signal_catcher_; 245 246 // Make sure all other non-daemon threads have terminated, and all daemon threads are suspended. 247 delete thread_list_; 248 249 // Delete the JIT after thread list to ensure that there is no remaining threads which could be 250 // accessing the instrumentation when we delete it. 251 if (jit_.get() != nullptr) { 252 VLOG(jit) << "Deleting jit"; 253 jit_.reset(nullptr); 254 } 255 arena_pool_.reset(); 256 257 // Shutdown the fault manager if it was initialized. 258 fault_manager.Shutdown(); 259 260 delete monitor_list_; 261 delete monitor_pool_; 262 delete class_linker_; 263 delete heap_; 264 delete intern_table_; 265 delete java_vm_; 266 Thread::Shutdown(); 267 QuasiAtomic::Shutdown(); 268 verifier::MethodVerifier::Shutdown(); 269 MemMap::Shutdown(); 270 // TODO: acquire a static mutex on Runtime to avoid racing. 271 CHECK(instance_ == nullptr || instance_ == this); 272 instance_ = nullptr; 273} 274 275struct AbortState { 276 void Dump(std::ostream& os) const { 277 if (gAborting > 1) { 278 os << "Runtime aborting --- recursively, so no thread-specific detail!\n"; 279 return; 280 } 281 gAborting++; 282 os << "Runtime aborting...\n"; 283 if (Runtime::Current() == NULL) { 284 os << "(Runtime does not yet exist!)\n"; 285 return; 286 } 287 Thread* self = Thread::Current(); 288 if (self == nullptr) { 289 os << "(Aborting thread was not attached to runtime!)\n"; 290 DumpKernelStack(os, GetTid(), " kernel: ", false); 291 DumpNativeStack(os, GetTid(), " native: ", nullptr); 292 } else { 293 os << "Aborting thread:\n"; 294 if (Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)) { 295 DumpThread(os, self); 296 } else { 297 if (Locks::mutator_lock_->SharedTryLock(self)) { 298 DumpThread(os, self); 299 Locks::mutator_lock_->SharedUnlock(self); 300 } 301 } 302 } 303 DumpAllThreads(os, self); 304 } 305 306 // No thread-safety analysis as we do explicitly test for holding the mutator lock. 307 void DumpThread(std::ostream& os, Thread* self) const NO_THREAD_SAFETY_ANALYSIS { 308 DCHECK(Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)); 309 self->Dump(os); 310 if (self->IsExceptionPending()) { 311 mirror::Throwable* exception = self->GetException(); 312 os << "Pending exception " << exception->Dump(); 313 } 314 } 315 316 void DumpAllThreads(std::ostream& os, Thread* self) const { 317 Runtime* runtime = Runtime::Current(); 318 if (runtime != nullptr) { 319 ThreadList* thread_list = runtime->GetThreadList(); 320 if (thread_list != nullptr) { 321 bool tll_already_held = Locks::thread_list_lock_->IsExclusiveHeld(self); 322 bool ml_already_held = Locks::mutator_lock_->IsSharedHeld(self); 323 if (!tll_already_held || !ml_already_held) { 324 os << "Dumping all threads without appropriate locks held:" 325 << (!tll_already_held ? " thread list lock" : "") 326 << (!ml_already_held ? " mutator lock" : "") 327 << "\n"; 328 } 329 os << "All threads:\n"; 330 thread_list->Dump(os); 331 } 332 } 333 } 334}; 335 336void Runtime::Abort() { 337 gAborting++; // set before taking any locks 338 339 // Ensure that we don't have multiple threads trying to abort at once, 340 // which would result in significantly worse diagnostics. 341 MutexLock mu(Thread::Current(), *Locks::abort_lock_); 342 343 // Get any pending output out of the way. 344 fflush(NULL); 345 346 // Many people have difficulty distinguish aborts from crashes, 347 // so be explicit. 348 AbortState state; 349 LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state); 350 351 // Call the abort hook if we have one. 352 if (Runtime::Current() != NULL && Runtime::Current()->abort_ != NULL) { 353 LOG(INTERNAL_FATAL) << "Calling abort hook..."; 354 Runtime::Current()->abort_(); 355 // notreached 356 LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!"; 357 } 358 359#if defined(__GLIBC__) 360 // TODO: we ought to be able to use pthread_kill(3) here (or abort(3), 361 // which POSIX defines in terms of raise(3), which POSIX defines in terms 362 // of pthread_kill(3)). On Linux, though, libcorkscrew can't unwind through 363 // libpthread, which means the stacks we dump would be useless. Calling 364 // tgkill(2) directly avoids that. 365 syscall(__NR_tgkill, getpid(), GetTid(), SIGABRT); 366 // TODO: LLVM installs it's own SIGABRT handler so exit to be safe... Can we disable that in LLVM? 367 // If not, we could use sigaction(3) before calling tgkill(2) and lose this call to exit(3). 368 exit(1); 369#else 370 abort(); 371#endif 372 // notreached 373} 374 375void Runtime::PreZygoteFork() { 376 heap_->PreZygoteFork(); 377} 378 379void Runtime::CallExitHook(jint status) { 380 if (exit_ != NULL) { 381 ScopedThreadStateChange tsc(Thread::Current(), kNative); 382 exit_(status); 383 LOG(WARNING) << "Exit hook returned instead of exiting!"; 384 } 385} 386 387void Runtime::SweepSystemWeaks(IsMarkedCallback* visitor, void* arg) { 388 GetInternTable()->SweepInternTableWeaks(visitor, arg); 389 GetMonitorList()->SweepMonitorList(visitor, arg); 390 GetJavaVM()->SweepJniWeakGlobals(visitor, arg); 391} 392 393bool Runtime::Create(const RuntimeOptions& options, bool ignore_unrecognized) { 394 // TODO: acquire a static mutex on Runtime to avoid racing. 395 if (Runtime::instance_ != NULL) { 396 return false; 397 } 398 InitLogging(NULL); // Calls Locks::Init() as a side effect. 399 instance_ = new Runtime; 400 if (!instance_->Init(options, ignore_unrecognized)) { 401 // TODO: Currently deleting the instance will abort the runtime on destruction. Now This will 402 // leak memory, instead. Fix the destructor. b/19100793. 403 // delete instance_; 404 instance_ = NULL; 405 return false; 406 } 407 return true; 408} 409 410static jobject CreateSystemClassLoader(Runtime* runtime) { 411 if (runtime->IsAotCompiler() && !runtime->GetCompilerCallbacks()->IsBootImage()) { 412 return nullptr; 413 } 414 415 ScopedObjectAccess soa(Thread::Current()); 416 ClassLinker* cl = Runtime::Current()->GetClassLinker(); 417 418 StackHandleScope<2> hs(soa.Self()); 419 Handle<mirror::Class> class_loader_class( 420 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader))); 421 CHECK(cl->EnsureInitialized(soa.Self(), class_loader_class, true, true)); 422 423 mirror::ArtMethod* getSystemClassLoader = 424 class_loader_class->FindDirectMethod("getSystemClassLoader", "()Ljava/lang/ClassLoader;"); 425 CHECK(getSystemClassLoader != NULL); 426 427 JValue result = InvokeWithJValues(soa, nullptr, soa.EncodeMethod(getSystemClassLoader), nullptr); 428 JNIEnv* env = soa.Self()->GetJniEnv(); 429 ScopedLocalRef<jobject> system_class_loader(env, 430 soa.AddLocalReference<jobject>(result.GetL())); 431 CHECK(system_class_loader.get() != nullptr); 432 433 soa.Self()->SetClassLoaderOverride(system_class_loader.get()); 434 435 Handle<mirror::Class> thread_class( 436 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread))); 437 CHECK(cl->EnsureInitialized(soa.Self(), thread_class, true, true)); 438 439 mirror::ArtField* contextClassLoader = 440 thread_class->FindDeclaredInstanceField("contextClassLoader", "Ljava/lang/ClassLoader;"); 441 CHECK(contextClassLoader != NULL); 442 443 // We can't run in a transaction yet. 444 contextClassLoader->SetObject<false>(soa.Self()->GetPeer(), 445 soa.Decode<mirror::ClassLoader*>(system_class_loader.get())); 446 447 return env->NewGlobalRef(system_class_loader.get()); 448} 449 450std::string Runtime::GetPatchoatExecutable() const { 451 if (!patchoat_executable_.empty()) { 452 return patchoat_executable_; 453 } 454 std::string patchoat_executable(GetAndroidRoot()); 455 patchoat_executable += (kIsDebugBuild ? "/bin/patchoatd" : "/bin/patchoat"); 456 return patchoat_executable; 457} 458 459std::string Runtime::GetCompilerExecutable() const { 460 if (!compiler_executable_.empty()) { 461 return compiler_executable_; 462 } 463 std::string compiler_executable(GetAndroidRoot()); 464 compiler_executable += (kIsDebugBuild ? "/bin/dex2oatd" : "/bin/dex2oat"); 465 return compiler_executable; 466} 467 468bool Runtime::Start() { 469 VLOG(startup) << "Runtime::Start entering"; 470 471 // Restore main thread state to kNative as expected by native code. 472 Thread* self = Thread::Current(); 473 474 self->TransitionFromRunnableToSuspended(kNative); 475 476 started_ = true; 477 478 // Use !IsAotCompiler so that we get test coverage, tests are never the zygote. 479 if (!IsAotCompiler()) { 480 ScopedObjectAccess soa(self); 481 gc::space::ImageSpace* image_space = heap_->GetImageSpace(); 482 if (image_space != nullptr) { 483 GetInternTable()->AddImageStringsToTable(image_space); 484 GetClassLinker()->MoveImageClassesToClassTable(); 485 } 486 } 487 488 // If we are the zygote then we need to wait until after forking to create the code cache 489 // due to SELinux restrictions on r/w/x memory regions. 490 if (!IsZygote() && jit_options_->UseJIT()) { 491 CreateJit(); 492 } 493 494 if (!IsImageDex2OatEnabled() || !GetHeap()->HasImageSpace()) { 495 ScopedObjectAccess soa(self); 496 StackHandleScope<1> hs(soa.Self()); 497 auto klass(hs.NewHandle<mirror::Class>(mirror::Class::GetJavaLangClass())); 498 class_linker_->EnsureInitialized(soa.Self(), klass, true, true); 499 } 500 501 // InitNativeMethods needs to be after started_ so that the classes 502 // it touches will have methods linked to the oat file if necessary. 503 InitNativeMethods(); 504 505 // Initialize well known thread group values that may be accessed threads while attaching. 506 InitThreadGroups(self); 507 508 Thread::FinishStartup(); 509 510 system_class_loader_ = CreateSystemClassLoader(this); 511 512 if (is_zygote_) { 513 if (!InitZygote()) { 514 return false; 515 } 516 } else { 517 if (is_native_bridge_loaded_) { 518 PreInitializeNativeBridge("."); 519 } 520 DidForkFromZygote(self->GetJniEnv(), NativeBridgeAction::kInitialize, 521 GetInstructionSetString(kRuntimeISA)); 522 } 523 524 StartDaemonThreads(); 525 526 { 527 ScopedObjectAccess soa(self); 528 self->GetJniEnv()->locals.AssertEmpty(); 529 } 530 531 VLOG(startup) << "Runtime::Start exiting"; 532 finished_starting_ = true; 533 534 if (profiler_options_.IsEnabled() && !profile_output_filename_.empty()) { 535 // User has asked for a profile using -Xenable-profiler. 536 // Create the profile file if it doesn't exist. 537 int fd = open(profile_output_filename_.c_str(), O_RDWR|O_CREAT|O_EXCL, 0660); 538 if (fd >= 0) { 539 close(fd); 540 } else if (errno != EEXIST) { 541 LOG(INFO) << "Failed to access the profile file. Profiler disabled."; 542 return true; 543 } 544 StartProfiler(profile_output_filename_.c_str()); 545 } 546 547 return true; 548} 549 550void Runtime::EndThreadBirth() EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_) { 551 DCHECK_GT(threads_being_born_, 0U); 552 threads_being_born_--; 553 if (shutting_down_started_ && threads_being_born_ == 0) { 554 shutdown_cond_->Broadcast(Thread::Current()); 555 } 556} 557 558// Do zygote-mode-only initialization. 559bool Runtime::InitZygote() { 560#ifdef __linux__ 561 // zygote goes into its own process group 562 setpgid(0, 0); 563 564 // See storage config details at http://source.android.com/tech/storage/ 565 // Create private mount namespace shared by all children 566 if (unshare(CLONE_NEWNS) == -1) { 567 PLOG(WARNING) << "Failed to unshare()"; 568 return false; 569 } 570 571 // Mark rootfs as being a slave so that changes from default 572 // namespace only flow into our children. 573 if (mount("rootfs", "/", NULL, (MS_SLAVE | MS_REC), NULL) == -1) { 574 PLOG(WARNING) << "Failed to mount() rootfs as MS_SLAVE"; 575 return false; 576 } 577 578 // Create a staging tmpfs that is shared by our children; they will 579 // bind mount storage into their respective private namespaces, which 580 // are isolated from each other. 581 const char* target_base = getenv("EMULATED_STORAGE_TARGET"); 582 if (target_base != NULL) { 583 if (mount("tmpfs", target_base, "tmpfs", MS_NOSUID | MS_NODEV, 584 "uid=0,gid=1028,mode=0751") == -1) { 585 LOG(WARNING) << "Failed to mount tmpfs to " << target_base; 586 return false; 587 } 588 } 589 590 return true; 591#else 592 UNIMPLEMENTED(FATAL); 593 return false; 594#endif 595} 596 597void Runtime::DidForkFromZygote(JNIEnv* env, NativeBridgeAction action, const char* isa) { 598 is_zygote_ = false; 599 600 if (is_native_bridge_loaded_) { 601 switch (action) { 602 case NativeBridgeAction::kUnload: 603 UnloadNativeBridge(); 604 is_native_bridge_loaded_ = false; 605 break; 606 607 case NativeBridgeAction::kInitialize: 608 InitializeNativeBridge(env, isa); 609 break; 610 } 611 } 612 613 // Create the thread pools. 614 heap_->CreateThreadPool(); 615 if (jit_.get() == nullptr && jit_options_->UseJIT()) { 616 // Create the JIT if the flag is set and we haven't already create it (happens for run-tests). 617 CreateJit(); 618 } 619 620 StartSignalCatcher(); 621 622 // Start the JDWP thread. If the command-line debugger flags specified "suspend=y", 623 // this will pause the runtime, so we probably want this to come last. 624 Dbg::StartJdwp(); 625} 626 627void Runtime::StartSignalCatcher() { 628 if (!is_zygote_) { 629 signal_catcher_ = new SignalCatcher(stack_trace_file_); 630 } 631} 632 633bool Runtime::IsShuttingDown(Thread* self) { 634 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 635 return IsShuttingDownLocked(); 636} 637 638void Runtime::StartDaemonThreads() { 639 VLOG(startup) << "Runtime::StartDaemonThreads entering"; 640 641 Thread* self = Thread::Current(); 642 643 // Must be in the kNative state for calling native methods. 644 CHECK_EQ(self->GetState(), kNative); 645 646 JNIEnv* env = self->GetJniEnv(); 647 env->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 648 WellKnownClasses::java_lang_Daemons_start); 649 if (env->ExceptionCheck()) { 650 env->ExceptionDescribe(); 651 LOG(FATAL) << "Error starting java.lang.Daemons"; 652 } 653 654 VLOG(startup) << "Runtime::StartDaemonThreads exiting"; 655} 656 657static bool OpenDexFilesFromImage(const std::string& image_location, 658 std::vector<std::unique_ptr<const DexFile>>* dex_files, 659 size_t* failures) { 660 DCHECK(dex_files != nullptr) << "OpenDexFilesFromImage: out-param is NULL"; 661 std::string system_filename; 662 bool has_system = false; 663 std::string cache_filename_unused; 664 bool dalvik_cache_exists_unused; 665 bool has_cache_unused; 666 bool is_global_cache_unused; 667 bool found_image = gc::space::ImageSpace::FindImageFilename(image_location.c_str(), 668 kRuntimeISA, 669 &system_filename, 670 &has_system, 671 &cache_filename_unused, 672 &dalvik_cache_exists_unused, 673 &has_cache_unused, 674 &is_global_cache_unused); 675 *failures = 0; 676 if (!found_image || !has_system) { 677 return false; 678 } 679 std::string error_msg; 680 // We are falling back to non-executable use of the oat file because patching failed, presumably 681 // due to lack of space. 682 std::string oat_filename = ImageHeader::GetOatLocationFromImageLocation(system_filename.c_str()); 683 std::string oat_location = ImageHeader::GetOatLocationFromImageLocation(image_location.c_str()); 684 std::unique_ptr<File> file(OS::OpenFileForReading(oat_filename.c_str())); 685 if (file.get() == nullptr) { 686 return false; 687 } 688 std::unique_ptr<ElfFile> elf_file(ElfFile::Open(file.release(), false, false, &error_msg)); 689 if (elf_file.get() == nullptr) { 690 return false; 691 } 692 std::unique_ptr<OatFile> oat_file(OatFile::OpenWithElfFile(elf_file.release(), oat_location, 693 nullptr, &error_msg)); 694 if (oat_file.get() == nullptr) { 695 LOG(INFO) << "Unable to use '" << oat_filename << "' because " << error_msg; 696 return false; 697 } 698 699 for (const OatFile::OatDexFile* oat_dex_file : oat_file->GetOatDexFiles()) { 700 if (oat_dex_file == nullptr) { 701 *failures += 1; 702 continue; 703 } 704 std::unique_ptr<const DexFile> dex_file = oat_dex_file->OpenDexFile(&error_msg); 705 if (dex_file.get() == nullptr) { 706 *failures += 1; 707 } else { 708 dex_files->push_back(std::move(dex_file)); 709 } 710 } 711 Runtime::Current()->GetClassLinker()->RegisterOatFile(oat_file.release()); 712 return true; 713} 714 715 716static size_t OpenDexFiles(const std::vector<std::string>& dex_filenames, 717 const std::vector<std::string>& dex_locations, 718 const std::string& image_location, 719 std::vector<std::unique_ptr<const DexFile>>* dex_files) { 720 DCHECK(dex_files != nullptr) << "OpenDexFiles: out-param is NULL"; 721 size_t failure_count = 0; 722 if (!image_location.empty() && OpenDexFilesFromImage(image_location, dex_files, &failure_count)) { 723 return failure_count; 724 } 725 failure_count = 0; 726 for (size_t i = 0; i < dex_filenames.size(); i++) { 727 const char* dex_filename = dex_filenames[i].c_str(); 728 const char* dex_location = dex_locations[i].c_str(); 729 std::string error_msg; 730 if (!OS::FileExists(dex_filename)) { 731 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 732 continue; 733 } 734 if (!DexFile::Open(dex_filename, dex_location, &error_msg, dex_files)) { 735 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 736 ++failure_count; 737 } 738 } 739 return failure_count; 740} 741 742bool Runtime::Init(const RuntimeOptions& raw_options, bool ignore_unrecognized) { 743 CHECK_EQ(sysconf(_SC_PAGE_SIZE), kPageSize); 744 745 MemMap::Init(); 746 747 using Opt = RuntimeArgumentMap; 748 RuntimeArgumentMap runtime_options; 749 std::unique_ptr<ParsedOptions> parsed_options( 750 ParsedOptions::Create(raw_options, ignore_unrecognized, &runtime_options)); 751 if (parsed_options.get() == nullptr) { 752 LOG(ERROR) << "Failed to parse options"; 753 return false; 754 } 755 VLOG(startup) << "Runtime::Init -verbose:startup enabled"; 756 757 QuasiAtomic::Startup(); 758 759 Monitor::Init(runtime_options.GetOrDefault(Opt::LockProfThreshold), 760 runtime_options.GetOrDefault(Opt::HookIsSensitiveThread)); 761 762 boot_class_path_string_ = runtime_options.ReleaseOrDefault(Opt::BootClassPath); 763 class_path_string_ = runtime_options.ReleaseOrDefault(Opt::ClassPath); 764 properties_ = runtime_options.ReleaseOrDefault(Opt::PropertiesList); 765 766 compiler_callbacks_ = runtime_options.GetOrDefault(Opt::CompilerCallbacksPtr); 767 patchoat_executable_ = runtime_options.ReleaseOrDefault(Opt::PatchOat); 768 must_relocate_ = runtime_options.GetOrDefault(Opt::Relocate); 769 is_zygote_ = runtime_options.Exists(Opt::Zygote); 770 is_explicit_gc_disabled_ = runtime_options.Exists(Opt::DisableExplicitGC); 771 dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::Dex2Oat); 772 image_dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::ImageDex2Oat); 773 774 vfprintf_ = runtime_options.GetOrDefault(Opt::HookVfprintf); 775 exit_ = runtime_options.GetOrDefault(Opt::HookExit); 776 abort_ = runtime_options.GetOrDefault(Opt::HookAbort); 777 778 default_stack_size_ = runtime_options.GetOrDefault(Opt::StackSize); 779 stack_trace_file_ = runtime_options.ReleaseOrDefault(Opt::StackTraceFile); 780 781 compiler_executable_ = runtime_options.ReleaseOrDefault(Opt::Compiler); 782 compiler_options_ = runtime_options.ReleaseOrDefault(Opt::CompilerOptions); 783 image_compiler_options_ = runtime_options.ReleaseOrDefault(Opt::ImageCompilerOptions); 784 image_location_ = runtime_options.GetOrDefault(Opt::Image); 785 786 max_spins_before_thin_lock_inflation_ = 787 runtime_options.GetOrDefault(Opt::MaxSpinsBeforeThinLockInflation); 788 789 monitor_list_ = new MonitorList; 790 monitor_pool_ = MonitorPool::Create(); 791 thread_list_ = new ThreadList; 792 intern_table_ = new InternTable; 793 794 verify_ = runtime_options.GetOrDefault(Opt::Verify); 795 allow_dex_file_fallback_ = !runtime_options.Exists(Opt::NoDexFileFallback); 796 797 Split(runtime_options.GetOrDefault(Opt::CpuAbiList), ',', &cpu_abilist_); 798 799 if (runtime_options.GetOrDefault(Opt::Interpret)) { 800 GetInstrumentation()->ForceInterpretOnly(); 801 } 802 803 zygote_max_failed_boots_ = runtime_options.GetOrDefault(Opt::ZygoteMaxFailedBoots); 804 805 XGcOption xgc_option = runtime_options.GetOrDefault(Opt::GcOption); 806 heap_ = new gc::Heap(runtime_options.GetOrDefault(Opt::MemoryInitialSize), 807 runtime_options.GetOrDefault(Opt::HeapGrowthLimit), 808 runtime_options.GetOrDefault(Opt::HeapMinFree), 809 runtime_options.GetOrDefault(Opt::HeapMaxFree), 810 runtime_options.GetOrDefault(Opt::HeapTargetUtilization), 811 runtime_options.GetOrDefault(Opt::ForegroundHeapGrowthMultiplier), 812 runtime_options.GetOrDefault(Opt::MemoryMaximumSize), 813 runtime_options.GetOrDefault(Opt::NonMovingSpaceCapacity), 814 runtime_options.GetOrDefault(Opt::Image), 815 runtime_options.GetOrDefault(Opt::ImageInstructionSet), 816 xgc_option.collector_type_, 817 runtime_options.GetOrDefault(Opt::BackgroundGc), 818 runtime_options.GetOrDefault(Opt::LargeObjectSpace), 819 runtime_options.GetOrDefault(Opt::LargeObjectThreshold), 820 runtime_options.GetOrDefault(Opt::ParallelGCThreads), 821 runtime_options.GetOrDefault(Opt::ConcGCThreads), 822 runtime_options.Exists(Opt::LowMemoryMode), 823 runtime_options.GetOrDefault(Opt::LongPauseLogThreshold), 824 runtime_options.GetOrDefault(Opt::LongGCLogThreshold), 825 runtime_options.Exists(Opt::IgnoreMaxFootprint), 826 runtime_options.GetOrDefault(Opt::UseTLAB), 827 xgc_option.verify_pre_gc_heap_, 828 xgc_option.verify_pre_sweeping_heap_, 829 xgc_option.verify_post_gc_heap_, 830 xgc_option.verify_pre_gc_rosalloc_, 831 xgc_option.verify_pre_sweeping_rosalloc_, 832 xgc_option.verify_post_gc_rosalloc_, 833 runtime_options.GetOrDefault(Opt::EnableHSpaceCompactForOOM), 834 runtime_options.GetOrDefault(Opt::HSpaceCompactForOOMMinIntervalsMs)); 835 836 if (heap_->GetImageSpace() == nullptr && !allow_dex_file_fallback_) { 837 LOG(ERROR) << "Dex file fallback disabled, cannot continue without image."; 838 return false; 839 } 840 841 dump_gc_performance_on_shutdown_ = runtime_options.Exists(Opt::DumpGCPerformanceOnShutdown); 842 843 if (runtime_options.Exists(Opt::JdwpOptions)) { 844 Dbg::ConfigureJdwp(runtime_options.GetOrDefault(Opt::JdwpOptions)); 845 } 846 847 jit_options_.reset(jit::JitOptions::CreateFromRuntimeArguments(runtime_options)); 848 bool use_jit = jit_options_->UseJIT(); 849 if (IsAotCompiler()) { 850 // If we are already the compiler at this point, we must be dex2oat. Don't create the jit in 851 // this case. 852 // If runtime_options doesn't have UseJIT set to true then CreateFromRuntimeArguments returns 853 // nullptr and we don't create the jit. 854 use_jit = false; 855 } 856 857 // Use MemMap arena pool for jit, malloc otherwise. Malloc arenas are faster to allocate but 858 // can't be trimmed as easily. 859 const bool use_malloc = !use_jit; 860 arena_pool_.reset(new ArenaPool(use_malloc)); 861 862 BlockSignals(); 863 InitPlatformSignalHandlers(); 864 865 // Change the implicit checks flags based on runtime architecture. 866 switch (kRuntimeISA) { 867 case kArm: 868 case kThumb2: 869 case kX86: 870 case kArm64: 871 case kX86_64: 872 implicit_null_checks_ = true; 873 // Installing stack protection does not play well with valgrind. 874 implicit_so_checks_ = (RUNNING_ON_VALGRIND == 0); 875 break; 876 default: 877 // Keep the defaults. 878 break; 879 } 880 881 // Always initialize the signal chain so that any calls to sigaction get 882 // correctly routed to the next in the chain regardless of whether we 883 // have claimed the signal or not. 884 InitializeSignalChain(); 885 886 if (implicit_null_checks_ || implicit_so_checks_ || implicit_suspend_checks_) { 887 fault_manager.Init(); 888 889 // These need to be in a specific order. The null point check handler must be 890 // after the suspend check and stack overflow check handlers. 891 // 892 // Note: the instances attach themselves to the fault manager and are handled by it. The manager 893 // will delete the instance on Shutdown(). 894 if (implicit_suspend_checks_) { 895 new SuspensionHandler(&fault_manager); 896 } 897 898 if (implicit_so_checks_) { 899 new StackOverflowHandler(&fault_manager); 900 } 901 902 if (implicit_null_checks_) { 903 new NullPointerHandler(&fault_manager); 904 } 905 906 if (kEnableJavaStackTraceHandler) { 907 new JavaStackTraceHandler(&fault_manager); 908 } 909 } 910 911 java_vm_ = new JavaVMExt(this, runtime_options); 912 913 Thread::Startup(); 914 915 // ClassLinker needs an attached thread, but we can't fully attach a thread without creating 916 // objects. We can't supply a thread group yet; it will be fixed later. Since we are the main 917 // thread, we do not get a java peer. 918 Thread* self = Thread::Attach("main", false, nullptr, false); 919 CHECK_EQ(self->GetThreadId(), ThreadList::kMainThreadId); 920 CHECK(self != nullptr); 921 922 // Set us to runnable so tools using a runtime can allocate and GC by default 923 self->TransitionFromSuspendedToRunnable(); 924 925 // Now we're attached, we can take the heap locks and validate the heap. 926 GetHeap()->EnableObjectValidation(); 927 928 CHECK_GE(GetHeap()->GetContinuousSpaces().size(), 1U); 929 class_linker_ = new ClassLinker(intern_table_); 930 if (GetHeap()->HasImageSpace()) { 931 class_linker_->InitFromImage(); 932 if (kIsDebugBuild) { 933 GetHeap()->GetImageSpace()->VerifyImageAllocations(); 934 } 935 if (boot_class_path_string_.empty()) { 936 // The bootclasspath is not explicitly specified: construct it from the loaded dex files. 937 const std::vector<const DexFile*>& boot_class_path = GetClassLinker()->GetBootClassPath(); 938 std::vector<std::string> dex_locations; 939 dex_locations.reserve(boot_class_path.size()); 940 for (const DexFile* dex_file : boot_class_path) { 941 dex_locations.push_back(dex_file->GetLocation()); 942 } 943 boot_class_path_string_ = Join(dex_locations, ':'); 944 } 945 } else { 946 std::vector<std::string> dex_filenames; 947 Split(boot_class_path_string_, ':', &dex_filenames); 948 949 std::vector<std::string> dex_locations; 950 if (!runtime_options.Exists(Opt::BootClassPathLocations)) { 951 dex_locations = dex_filenames; 952 } else { 953 dex_locations = runtime_options.GetOrDefault(Opt::BootClassPathLocations); 954 CHECK_EQ(dex_filenames.size(), dex_locations.size()); 955 } 956 957 std::vector<std::unique_ptr<const DexFile>> boot_class_path; 958 OpenDexFiles(dex_filenames, 959 dex_locations, 960 runtime_options.GetOrDefault(Opt::Image), 961 &boot_class_path); 962 instruction_set_ = runtime_options.GetOrDefault(Opt::ImageInstructionSet); 963 class_linker_->InitWithoutImage(std::move(boot_class_path)); 964 965 // TODO: Should we move the following to InitWithoutImage? 966 SetInstructionSet(instruction_set_); 967 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 968 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 969 if (!HasCalleeSaveMethod(type)) { 970 SetCalleeSaveMethod(CreateCalleeSaveMethod(), type); 971 } 972 } 973 } 974 975 CHECK(class_linker_ != nullptr); 976 977 // Initialize the special sentinel_ value early. 978 sentinel_ = GcRoot<mirror::Object>(class_linker_->AllocObject(self)); 979 CHECK(sentinel_.Read() != nullptr); 980 981 verifier::MethodVerifier::Init(); 982 983 method_trace_ = runtime_options.Exists(Opt::MethodTrace); 984 method_trace_file_ = runtime_options.ReleaseOrDefault(Opt::MethodTraceFile); 985 method_trace_file_size_ = runtime_options.ReleaseOrDefault(Opt::MethodTraceFileSize); 986 987 { 988 auto&& profiler_options = runtime_options.ReleaseOrDefault(Opt::ProfilerOpts); 989 profile_output_filename_ = profiler_options.output_file_name_; 990 991 // TODO: Don't do this, just change ProfilerOptions to include the output file name? 992 ProfilerOptions other_options( 993 profiler_options.enabled_, 994 profiler_options.period_s_, 995 profiler_options.duration_s_, 996 profiler_options.interval_us_, 997 profiler_options.backoff_coefficient_, 998 profiler_options.start_immediately_, 999 profiler_options.top_k_threshold_, 1000 profiler_options.top_k_change_threshold_, 1001 profiler_options.profile_type_, 1002 profiler_options.max_stack_depth_); 1003 1004 profiler_options_ = other_options; 1005 } 1006 1007 // TODO: move this to just be an Trace::Start argument 1008 Trace::SetDefaultClockSource(runtime_options.GetOrDefault(Opt::ProfileClock)); 1009 1010 if (method_trace_) { 1011 ScopedThreadStateChange tsc(self, kWaitingForMethodTracingStart); 1012 Trace::Start(method_trace_file_.c_str(), 1013 -1, 1014 static_cast<int>(method_trace_file_size_), 1015 0, 1016 Trace::TraceOutputMode::kFile, 1017 Trace::TraceMode::kMethodTracing, 1018 0); 1019 } 1020 1021 // Pre-allocate an OutOfMemoryError for the double-OOME case. 1022 self->ThrowNewException("Ljava/lang/OutOfMemoryError;", 1023 "OutOfMemoryError thrown while trying to throw OutOfMemoryError; " 1024 "no stack trace available"); 1025 pre_allocated_OutOfMemoryError_ = GcRoot<mirror::Throwable>(self->GetException()); 1026 self->ClearException(); 1027 1028 // Pre-allocate a NoClassDefFoundError for the common case of failing to find a system class 1029 // ahead of checking the application's class loader. 1030 self->ThrowNewException("Ljava/lang/NoClassDefFoundError;", 1031 "Class not found using the boot class loader; no stack trace available"); 1032 pre_allocated_NoClassDefFoundError_ = GcRoot<mirror::Throwable>(self->GetException()); 1033 self->ClearException(); 1034 1035 // Look for a native bridge. 1036 // 1037 // The intended flow here is, in the case of a running system: 1038 // 1039 // Runtime::Init() (zygote): 1040 // LoadNativeBridge -> dlopen from cmd line parameter. 1041 // | 1042 // V 1043 // Runtime::Start() (zygote): 1044 // No-op wrt native bridge. 1045 // | 1046 // | start app 1047 // V 1048 // DidForkFromZygote(action) 1049 // action = kUnload -> dlclose native bridge. 1050 // action = kInitialize -> initialize library 1051 // 1052 // 1053 // The intended flow here is, in the case of a simple dalvikvm call: 1054 // 1055 // Runtime::Init(): 1056 // LoadNativeBridge -> dlopen from cmd line parameter. 1057 // | 1058 // V 1059 // Runtime::Start(): 1060 // DidForkFromZygote(kInitialize) -> try to initialize any native bridge given. 1061 // No-op wrt native bridge. 1062 { 1063 std::string native_bridge_file_name = runtime_options.ReleaseOrDefault(Opt::NativeBridge); 1064 is_native_bridge_loaded_ = LoadNativeBridge(native_bridge_file_name); 1065 } 1066 1067 VLOG(startup) << "Runtime::Init exiting"; 1068 return true; 1069} 1070 1071void Runtime::InitNativeMethods() { 1072 VLOG(startup) << "Runtime::InitNativeMethods entering"; 1073 Thread* self = Thread::Current(); 1074 JNIEnv* env = self->GetJniEnv(); 1075 1076 // Must be in the kNative state for calling native methods (JNI_OnLoad code). 1077 CHECK_EQ(self->GetState(), kNative); 1078 1079 // First set up JniConstants, which is used by both the runtime's built-in native 1080 // methods and libcore. 1081 JniConstants::init(env); 1082 WellKnownClasses::Init(env); 1083 1084 // Then set up the native methods provided by the runtime itself. 1085 RegisterRuntimeNativeMethods(env); 1086 1087 // Then set up libcore, which is just a regular JNI library with a regular JNI_OnLoad. 1088 // Most JNI libraries can just use System.loadLibrary, but libcore can't because it's 1089 // the library that implements System.loadLibrary! 1090 { 1091 std::string reason; 1092 if (!java_vm_->LoadNativeLibrary(env, "libjavacore.so", nullptr, &reason)) { 1093 LOG(FATAL) << "LoadNativeLibrary failed for \"libjavacore.so\": " << reason; 1094 } 1095 } 1096 1097 // Initialize well known classes that may invoke runtime native methods. 1098 WellKnownClasses::LateInit(env); 1099 1100 VLOG(startup) << "Runtime::InitNativeMethods exiting"; 1101} 1102 1103void Runtime::InitThreadGroups(Thread* self) { 1104 JNIEnvExt* env = self->GetJniEnv(); 1105 ScopedJniEnvLocalRefState env_state(env); 1106 main_thread_group_ = 1107 env->NewGlobalRef(env->GetStaticObjectField( 1108 WellKnownClasses::java_lang_ThreadGroup, 1109 WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup)); 1110 CHECK(main_thread_group_ != NULL || IsAotCompiler()); 1111 system_thread_group_ = 1112 env->NewGlobalRef(env->GetStaticObjectField( 1113 WellKnownClasses::java_lang_ThreadGroup, 1114 WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup)); 1115 CHECK(system_thread_group_ != NULL || IsAotCompiler()); 1116} 1117 1118jobject Runtime::GetMainThreadGroup() const { 1119 CHECK(main_thread_group_ != NULL || IsAotCompiler()); 1120 return main_thread_group_; 1121} 1122 1123jobject Runtime::GetSystemThreadGroup() const { 1124 CHECK(system_thread_group_ != NULL || IsAotCompiler()); 1125 return system_thread_group_; 1126} 1127 1128jobject Runtime::GetSystemClassLoader() const { 1129 CHECK(system_class_loader_ != NULL || IsAotCompiler()); 1130 return system_class_loader_; 1131} 1132 1133void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) { 1134 register_dalvik_system_DexFile(env); 1135 register_dalvik_system_VMDebug(env); 1136 register_dalvik_system_VMRuntime(env); 1137 register_dalvik_system_VMStack(env); 1138 register_dalvik_system_ZygoteHooks(env); 1139 register_java_lang_Class(env); 1140 register_java_lang_DexCache(env); 1141 register_java_lang_Object(env); 1142 register_java_lang_ref_FinalizerReference(env); 1143 register_java_lang_reflect_Array(env); 1144 register_java_lang_reflect_Constructor(env); 1145 register_java_lang_reflect_Field(env); 1146 register_java_lang_reflect_Method(env); 1147 register_java_lang_reflect_Proxy(env); 1148 register_java_lang_ref_Reference(env); 1149 register_java_lang_Runtime(env); 1150 register_java_lang_String(env); 1151 register_java_lang_System(env); 1152 register_java_lang_Thread(env); 1153 register_java_lang_Throwable(env); 1154 register_java_lang_VMClassLoader(env); 1155 register_java_util_concurrent_atomic_AtomicLong(env); 1156 register_org_apache_harmony_dalvik_ddmc_DdmServer(env); 1157 register_org_apache_harmony_dalvik_ddmc_DdmVmInternal(env); 1158 register_sun_misc_Unsafe(env); 1159} 1160 1161void Runtime::DumpForSigQuit(std::ostream& os) { 1162 GetClassLinker()->DumpForSigQuit(os); 1163 GetInternTable()->DumpForSigQuit(os); 1164 GetJavaVM()->DumpForSigQuit(os); 1165 GetHeap()->DumpForSigQuit(os); 1166 TrackedAllocators::Dump(os); 1167 os << "\n"; 1168 1169 thread_list_->DumpForSigQuit(os); 1170 BaseMutex::DumpAll(os); 1171} 1172 1173void Runtime::DumpLockHolders(std::ostream& os) { 1174 uint64_t mutator_lock_owner = Locks::mutator_lock_->GetExclusiveOwnerTid(); 1175 pid_t thread_list_lock_owner = GetThreadList()->GetLockOwner(); 1176 pid_t classes_lock_owner = GetClassLinker()->GetClassesLockOwner(); 1177 pid_t dex_lock_owner = GetClassLinker()->GetDexLockOwner(); 1178 if ((thread_list_lock_owner | classes_lock_owner | dex_lock_owner) != 0) { 1179 os << "Mutator lock exclusive owner tid: " << mutator_lock_owner << "\n" 1180 << "ThreadList lock owner tid: " << thread_list_lock_owner << "\n" 1181 << "ClassLinker classes lock owner tid: " << classes_lock_owner << "\n" 1182 << "ClassLinker dex lock owner tid: " << dex_lock_owner << "\n"; 1183 } 1184} 1185 1186void Runtime::SetStatsEnabled(bool new_state) { 1187 Thread* self = Thread::Current(); 1188 MutexLock mu(self, *Locks::instrument_entrypoints_lock_); 1189 if (new_state == true) { 1190 GetStats()->Clear(~0); 1191 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1192 self->GetStats()->Clear(~0); 1193 if (stats_enabled_ != new_state) { 1194 GetInstrumentation()->InstrumentQuickAllocEntryPointsLocked(); 1195 } 1196 } else if (stats_enabled_ != new_state) { 1197 GetInstrumentation()->UninstrumentQuickAllocEntryPointsLocked(); 1198 } 1199 stats_enabled_ = new_state; 1200} 1201 1202void Runtime::ResetStats(int kinds) { 1203 GetStats()->Clear(kinds & 0xffff); 1204 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1205 Thread::Current()->GetStats()->Clear(kinds >> 16); 1206} 1207 1208int32_t Runtime::GetStat(int kind) { 1209 RuntimeStats* stats; 1210 if (kind < (1<<16)) { 1211 stats = GetStats(); 1212 } else { 1213 stats = Thread::Current()->GetStats(); 1214 kind >>= 16; 1215 } 1216 switch (kind) { 1217 case KIND_ALLOCATED_OBJECTS: 1218 return stats->allocated_objects; 1219 case KIND_ALLOCATED_BYTES: 1220 return stats->allocated_bytes; 1221 case KIND_FREED_OBJECTS: 1222 return stats->freed_objects; 1223 case KIND_FREED_BYTES: 1224 return stats->freed_bytes; 1225 case KIND_GC_INVOCATIONS: 1226 return stats->gc_for_alloc_count; 1227 case KIND_CLASS_INIT_COUNT: 1228 return stats->class_init_count; 1229 case KIND_CLASS_INIT_TIME: 1230 // Convert ns to us, reduce to 32 bits. 1231 return static_cast<int>(stats->class_init_time_ns / 1000); 1232 case KIND_EXT_ALLOCATED_OBJECTS: 1233 case KIND_EXT_ALLOCATED_BYTES: 1234 case KIND_EXT_FREED_OBJECTS: 1235 case KIND_EXT_FREED_BYTES: 1236 return 0; // backward compatibility 1237 default: 1238 LOG(FATAL) << "Unknown statistic " << kind; 1239 return -1; // unreachable 1240 } 1241} 1242 1243void Runtime::BlockSignals() { 1244 SignalSet signals; 1245 signals.Add(SIGPIPE); 1246 // SIGQUIT is used to dump the runtime's state (including stack traces). 1247 signals.Add(SIGQUIT); 1248 // SIGUSR1 is used to initiate a GC. 1249 signals.Add(SIGUSR1); 1250 signals.Block(); 1251} 1252 1253bool Runtime::AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group, 1254 bool create_peer) { 1255 return Thread::Attach(thread_name, as_daemon, thread_group, create_peer) != NULL; 1256} 1257 1258void Runtime::DetachCurrentThread() { 1259 Thread* self = Thread::Current(); 1260 if (self == NULL) { 1261 LOG(FATAL) << "attempting to detach thread that is not attached"; 1262 } 1263 if (self->HasManagedStack()) { 1264 LOG(FATAL) << *Thread::Current() << " attempting to detach while still running code"; 1265 } 1266 thread_list_->Unregister(self); 1267} 1268 1269mirror::Throwable* Runtime::GetPreAllocatedOutOfMemoryError() { 1270 mirror::Throwable* oome = pre_allocated_OutOfMemoryError_.Read(); 1271 if (oome == nullptr) { 1272 LOG(ERROR) << "Failed to return pre-allocated OOME"; 1273 } 1274 return oome; 1275} 1276 1277mirror::Throwable* Runtime::GetPreAllocatedNoClassDefFoundError() { 1278 mirror::Throwable* ncdfe = pre_allocated_NoClassDefFoundError_.Read(); 1279 if (ncdfe == nullptr) { 1280 LOG(ERROR) << "Failed to return pre-allocated NoClassDefFoundError"; 1281 } 1282 return ncdfe; 1283} 1284 1285void Runtime::VisitConstantRoots(RootCallback* callback, void* arg) { 1286 // Visit the classes held as static in mirror classes, these can be visited concurrently and only 1287 // need to be visited once per GC since they never change. 1288 mirror::ArtField::VisitRoots(callback, arg); 1289 mirror::ArtMethod::VisitRoots(callback, arg); 1290 mirror::Class::VisitRoots(callback, arg); 1291 mirror::Reference::VisitRoots(callback, arg); 1292 mirror::StackTraceElement::VisitRoots(callback, arg); 1293 mirror::String::VisitRoots(callback, arg); 1294 mirror::Throwable::VisitRoots(callback, arg); 1295 mirror::Field::VisitRoots(callback, arg); 1296 // Visit all the primitive array types classes. 1297 mirror::PrimitiveArray<uint8_t>::VisitRoots(callback, arg); // BooleanArray 1298 mirror::PrimitiveArray<int8_t>::VisitRoots(callback, arg); // ByteArray 1299 mirror::PrimitiveArray<uint16_t>::VisitRoots(callback, arg); // CharArray 1300 mirror::PrimitiveArray<double>::VisitRoots(callback, arg); // DoubleArray 1301 mirror::PrimitiveArray<float>::VisitRoots(callback, arg); // FloatArray 1302 mirror::PrimitiveArray<int32_t>::VisitRoots(callback, arg); // IntArray 1303 mirror::PrimitiveArray<int64_t>::VisitRoots(callback, arg); // LongArray 1304 mirror::PrimitiveArray<int16_t>::VisitRoots(callback, arg); // ShortArray 1305} 1306 1307void Runtime::VisitConcurrentRoots(RootCallback* callback, void* arg, VisitRootFlags flags) { 1308 intern_table_->VisitRoots(callback, arg, flags); 1309 class_linker_->VisitRoots(callback, arg, flags); 1310 if ((flags & kVisitRootFlagNewRoots) == 0) { 1311 // Guaranteed to have no new roots in the constant roots. 1312 VisitConstantRoots(callback, arg); 1313 } 1314} 1315 1316void Runtime::VisitTransactionRoots(RootCallback* callback, void* arg) { 1317 if (preinitialization_transaction_ != nullptr) { 1318 preinitialization_transaction_->VisitRoots(callback, arg); 1319 } 1320} 1321 1322void Runtime::VisitNonThreadRoots(RootCallback* callback, void* arg) { 1323 java_vm_->VisitRoots(callback, arg); 1324 sentinel_.VisitRootIfNonNull(callback, arg, RootInfo(kRootVMInternal)); 1325 pre_allocated_OutOfMemoryError_.VisitRootIfNonNull(callback, arg, RootInfo(kRootVMInternal)); 1326 resolution_method_.VisitRoot(callback, arg, RootInfo(kRootVMInternal)); 1327 pre_allocated_NoClassDefFoundError_.VisitRootIfNonNull(callback, arg, RootInfo(kRootVMInternal)); 1328 imt_conflict_method_.VisitRootIfNonNull(callback, arg, RootInfo(kRootVMInternal)); 1329 imt_unimplemented_method_.VisitRootIfNonNull(callback, arg, RootInfo(kRootVMInternal)); 1330 default_imt_.VisitRootIfNonNull(callback, arg, RootInfo(kRootVMInternal)); 1331 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 1332 callee_save_methods_[i].VisitRootIfNonNull(callback, arg, RootInfo(kRootVMInternal)); 1333 } 1334 verifier::MethodVerifier::VisitStaticRoots(callback, arg); 1335 VisitTransactionRoots(callback, arg); 1336 instrumentation_.VisitRoots(callback, arg); 1337} 1338 1339void Runtime::VisitNonConcurrentRoots(RootCallback* callback, void* arg) { 1340 thread_list_->VisitRoots(callback, arg); 1341 VisitNonThreadRoots(callback, arg); 1342} 1343 1344void Runtime::VisitThreadRoots(RootCallback* callback, void* arg) { 1345 thread_list_->VisitRoots(callback, arg); 1346} 1347 1348size_t Runtime::FlipThreadRoots(Closure* thread_flip_visitor, Closure* flip_callback, 1349 gc::collector::GarbageCollector* collector) { 1350 return thread_list_->FlipThreadRoots(thread_flip_visitor, flip_callback, collector); 1351} 1352 1353void Runtime::VisitRoots(RootCallback* callback, void* arg, VisitRootFlags flags) { 1354 VisitNonConcurrentRoots(callback, arg); 1355 VisitConcurrentRoots(callback, arg, flags); 1356} 1357 1358void Runtime::VisitImageRoots(RootCallback* callback, void* arg) { 1359 for (auto* space : GetHeap()->GetContinuousSpaces()) { 1360 if (space->IsImageSpace()) { 1361 auto* image_space = space->AsImageSpace(); 1362 const auto& image_header = image_space->GetImageHeader(); 1363 for (size_t i = 0; i < ImageHeader::kImageRootsMax; ++i) { 1364 auto* obj = image_header.GetImageRoot(static_cast<ImageHeader::ImageRoot>(i)); 1365 if (obj != nullptr) { 1366 auto* after_obj = obj; 1367 callback(&after_obj, arg, RootInfo(kRootStickyClass)); 1368 CHECK_EQ(after_obj, obj); 1369 } 1370 } 1371 } 1372 } 1373} 1374 1375mirror::ObjectArray<mirror::ArtMethod>* Runtime::CreateDefaultImt(ClassLinker* cl) { 1376 Thread* self = Thread::Current(); 1377 StackHandleScope<1> hs(self); 1378 Handle<mirror::ObjectArray<mirror::ArtMethod>> imtable( 1379 hs.NewHandle(cl->AllocArtMethodArray(self, 64))); 1380 mirror::ArtMethod* imt_conflict_method = Runtime::Current()->GetImtConflictMethod(); 1381 for (size_t i = 0; i < static_cast<size_t>(imtable->GetLength()); i++) { 1382 imtable->Set<false>(i, imt_conflict_method); 1383 } 1384 return imtable.Get(); 1385} 1386 1387mirror::ArtMethod* Runtime::CreateImtConflictMethod() { 1388 Thread* self = Thread::Current(); 1389 Runtime* runtime = Runtime::Current(); 1390 ClassLinker* class_linker = runtime->GetClassLinker(); 1391 StackHandleScope<1> hs(self); 1392 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self))); 1393 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod()); 1394 // TODO: use a special method for imt conflict method saves. 1395 method->SetDexMethodIndex(DexFile::kDexNoIndex); 1396 // When compiling, the code pointer will get set later when the image is loaded. 1397 if (runtime->IsAotCompiler()) { 1398 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1399 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1400 } else { 1401 method->SetEntryPointFromQuickCompiledCode(GetQuickImtConflictStub()); 1402 } 1403 return method.Get(); 1404} 1405 1406void Runtime::SetImtConflictMethod(mirror::ArtMethod* method) { 1407 imt_conflict_method_ = GcRoot<mirror::ArtMethod>(method); 1408} 1409 1410mirror::ArtMethod* Runtime::CreateResolutionMethod() { 1411 Thread* self = Thread::Current(); 1412 Runtime* runtime = Runtime::Current(); 1413 ClassLinker* class_linker = runtime->GetClassLinker(); 1414 StackHandleScope<1> hs(self); 1415 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self))); 1416 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod()); 1417 // TODO: use a special method for resolution method saves 1418 method->SetDexMethodIndex(DexFile::kDexNoIndex); 1419 // When compiling, the code pointer will get set later when the image is loaded. 1420 if (runtime->IsAotCompiler()) { 1421 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1422 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1423 } else { 1424 method->SetEntryPointFromQuickCompiledCode(GetQuickResolutionStub()); 1425 } 1426 return method.Get(); 1427} 1428 1429mirror::ArtMethod* Runtime::CreateCalleeSaveMethod() { 1430 Thread* self = Thread::Current(); 1431 Runtime* runtime = Runtime::Current(); 1432 ClassLinker* class_linker = runtime->GetClassLinker(); 1433 StackHandleScope<1> hs(self); 1434 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self))); 1435 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod()); 1436 // TODO: use a special method for callee saves 1437 method->SetDexMethodIndex(DexFile::kDexNoIndex); 1438 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1439 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1440 DCHECK_NE(instruction_set_, kNone); 1441 return method.Get(); 1442} 1443 1444void Runtime::DisallowNewSystemWeaks() { 1445 monitor_list_->DisallowNewMonitors(); 1446 intern_table_->DisallowNewInterns(); 1447 java_vm_->DisallowNewWeakGlobals(); 1448} 1449 1450void Runtime::AllowNewSystemWeaks() { 1451 monitor_list_->AllowNewMonitors(); 1452 intern_table_->AllowNewInterns(); 1453 java_vm_->AllowNewWeakGlobals(); 1454} 1455 1456void Runtime::EnsureNewSystemWeaksDisallowed() { 1457 // Lock and unlock the system weak locks once to ensure that no 1458 // threads are still in the middle of adding new system weaks. 1459 monitor_list_->EnsureNewMonitorsDisallowed(); 1460 intern_table_->EnsureNewInternsDisallowed(); 1461 java_vm_->EnsureNewWeakGlobalsDisallowed(); 1462} 1463 1464void Runtime::SetInstructionSet(InstructionSet instruction_set) { 1465 instruction_set_ = instruction_set; 1466 if ((instruction_set_ == kThumb2) || (instruction_set_ == kArm)) { 1467 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1468 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1469 callee_save_method_frame_infos_[i] = arm::ArmCalleeSaveMethodFrameInfo(type); 1470 } 1471 } else if (instruction_set_ == kMips) { 1472 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1473 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1474 callee_save_method_frame_infos_[i] = mips::MipsCalleeSaveMethodFrameInfo(type); 1475 } 1476 } else if (instruction_set_ == kMips64) { 1477 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1478 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1479 callee_save_method_frame_infos_[i] = mips64::Mips64CalleeSaveMethodFrameInfo(type); 1480 } 1481 } else if (instruction_set_ == kX86) { 1482 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1483 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1484 callee_save_method_frame_infos_[i] = x86::X86CalleeSaveMethodFrameInfo(type); 1485 } 1486 } else if (instruction_set_ == kX86_64) { 1487 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1488 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1489 callee_save_method_frame_infos_[i] = x86_64::X86_64CalleeSaveMethodFrameInfo(type); 1490 } 1491 } else if (instruction_set_ == kArm64) { 1492 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1493 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1494 callee_save_method_frame_infos_[i] = arm64::Arm64CalleeSaveMethodFrameInfo(type); 1495 } 1496 } else { 1497 UNIMPLEMENTED(FATAL) << instruction_set_; 1498 } 1499} 1500 1501void Runtime::SetCalleeSaveMethod(mirror::ArtMethod* method, CalleeSaveType type) { 1502 DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType)); 1503 callee_save_methods_[type] = GcRoot<mirror::ArtMethod>(method); 1504} 1505 1506void Runtime::StartProfiler(const char* profile_output_filename) { 1507 profile_output_filename_ = profile_output_filename; 1508 profiler_started_ = 1509 BackgroundMethodSamplingProfiler::Start(profile_output_filename_, profiler_options_); 1510} 1511 1512// Transaction support. 1513void Runtime::EnterTransactionMode(Transaction* transaction) { 1514 DCHECK(IsAotCompiler()); 1515 DCHECK(transaction != nullptr); 1516 DCHECK(!IsActiveTransaction()); 1517 preinitialization_transaction_ = transaction; 1518} 1519 1520void Runtime::ExitTransactionMode() { 1521 DCHECK(IsAotCompiler()); 1522 DCHECK(IsActiveTransaction()); 1523 preinitialization_transaction_ = nullptr; 1524} 1525 1526 1527bool Runtime::IsTransactionAborted() const { 1528 if (!IsActiveTransaction()) { 1529 return false; 1530 } else { 1531 DCHECK(IsAotCompiler()); 1532 return preinitialization_transaction_->IsAborted(); 1533 } 1534} 1535 1536void Runtime::AbortTransactionAndThrowInternalError(Thread* self, 1537 const std::string& abort_message) { 1538 DCHECK(IsAotCompiler()); 1539 DCHECK(IsActiveTransaction()); 1540 // Throwing an exception may cause its class initialization. If we mark the transaction 1541 // aborted before that, we may warn with a false alarm. Throwing the exception before 1542 // marking the transaction aborted avoids that. 1543 preinitialization_transaction_->ThrowInternalError(self, false); 1544 preinitialization_transaction_->Abort(abort_message); 1545} 1546 1547void Runtime::ThrowInternalErrorForAbortedTransaction(Thread* self) { 1548 DCHECK(IsAotCompiler()); 1549 DCHECK(IsActiveTransaction()); 1550 preinitialization_transaction_->ThrowInternalError(self, true); 1551} 1552 1553void Runtime::RecordWriteFieldBoolean(mirror::Object* obj, MemberOffset field_offset, 1554 uint8_t value, bool is_volatile) const { 1555 DCHECK(IsAotCompiler()); 1556 DCHECK(IsActiveTransaction()); 1557 preinitialization_transaction_->RecordWriteFieldBoolean(obj, field_offset, value, is_volatile); 1558} 1559 1560void Runtime::RecordWriteFieldByte(mirror::Object* obj, MemberOffset field_offset, 1561 int8_t value, bool is_volatile) const { 1562 DCHECK(IsAotCompiler()); 1563 DCHECK(IsActiveTransaction()); 1564 preinitialization_transaction_->RecordWriteFieldByte(obj, field_offset, value, is_volatile); 1565} 1566 1567void Runtime::RecordWriteFieldChar(mirror::Object* obj, MemberOffset field_offset, 1568 uint16_t value, bool is_volatile) const { 1569 DCHECK(IsAotCompiler()); 1570 DCHECK(IsActiveTransaction()); 1571 preinitialization_transaction_->RecordWriteFieldChar(obj, field_offset, value, is_volatile); 1572} 1573 1574void Runtime::RecordWriteFieldShort(mirror::Object* obj, MemberOffset field_offset, 1575 int16_t value, bool is_volatile) const { 1576 DCHECK(IsAotCompiler()); 1577 DCHECK(IsActiveTransaction()); 1578 preinitialization_transaction_->RecordWriteFieldShort(obj, field_offset, value, is_volatile); 1579} 1580 1581void Runtime::RecordWriteField32(mirror::Object* obj, MemberOffset field_offset, 1582 uint32_t value, bool is_volatile) const { 1583 DCHECK(IsAotCompiler()); 1584 DCHECK(IsActiveTransaction()); 1585 preinitialization_transaction_->RecordWriteField32(obj, field_offset, value, is_volatile); 1586} 1587 1588void Runtime::RecordWriteField64(mirror::Object* obj, MemberOffset field_offset, 1589 uint64_t value, bool is_volatile) const { 1590 DCHECK(IsAotCompiler()); 1591 DCHECK(IsActiveTransaction()); 1592 preinitialization_transaction_->RecordWriteField64(obj, field_offset, value, is_volatile); 1593} 1594 1595void Runtime::RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset, 1596 mirror::Object* value, bool is_volatile) const { 1597 DCHECK(IsAotCompiler()); 1598 DCHECK(IsActiveTransaction()); 1599 preinitialization_transaction_->RecordWriteFieldReference(obj, field_offset, value, is_volatile); 1600} 1601 1602void Runtime::RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const { 1603 DCHECK(IsAotCompiler()); 1604 DCHECK(IsActiveTransaction()); 1605 preinitialization_transaction_->RecordWriteArray(array, index, value); 1606} 1607 1608void Runtime::RecordStrongStringInsertion(mirror::String* s) const { 1609 DCHECK(IsAotCompiler()); 1610 DCHECK(IsActiveTransaction()); 1611 preinitialization_transaction_->RecordStrongStringInsertion(s); 1612} 1613 1614void Runtime::RecordWeakStringInsertion(mirror::String* s) const { 1615 DCHECK(IsAotCompiler()); 1616 DCHECK(IsActiveTransaction()); 1617 preinitialization_transaction_->RecordWeakStringInsertion(s); 1618} 1619 1620void Runtime::RecordStrongStringRemoval(mirror::String* s) const { 1621 DCHECK(IsAotCompiler()); 1622 DCHECK(IsActiveTransaction()); 1623 preinitialization_transaction_->RecordStrongStringRemoval(s); 1624} 1625 1626void Runtime::RecordWeakStringRemoval(mirror::String* s) const { 1627 DCHECK(IsAotCompiler()); 1628 DCHECK(IsActiveTransaction()); 1629 preinitialization_transaction_->RecordWeakStringRemoval(s); 1630} 1631 1632void Runtime::SetFaultMessage(const std::string& message) { 1633 MutexLock mu(Thread::Current(), fault_message_lock_); 1634 fault_message_ = message; 1635} 1636 1637void Runtime::AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* argv) 1638 const { 1639 if (GetInstrumentation()->InterpretOnly() || UseJit()) { 1640 argv->push_back("--compiler-filter=interpret-only"); 1641 } 1642 1643 // Make the dex2oat instruction set match that of the launching runtime. If we have multiple 1644 // architecture support, dex2oat may be compiled as a different instruction-set than that 1645 // currently being executed. 1646 std::string instruction_set("--instruction-set="); 1647 instruction_set += GetInstructionSetString(kRuntimeISA); 1648 argv->push_back(instruction_set); 1649 1650 std::unique_ptr<const InstructionSetFeatures> features(InstructionSetFeatures::FromCppDefines()); 1651 std::string feature_string("--instruction-set-features="); 1652 feature_string += features->GetFeatureString(); 1653 argv->push_back(feature_string); 1654 1655 if (Dbg::IsJdwpConfigured()) { 1656 argv->push_back("--debuggable"); 1657 } 1658} 1659 1660void Runtime::UpdateProfilerState(int state) { 1661 VLOG(profiler) << "Profiler state updated to " << state; 1662} 1663 1664void Runtime::CreateJit() { 1665 CHECK(!IsAotCompiler()); 1666 std::string error_msg; 1667 jit_.reset(jit::Jit::Create(jit_options_.get(), &error_msg)); 1668 if (jit_.get() != nullptr) { 1669 compiler_callbacks_ = jit_->GetCompilerCallbacks(); 1670 jit_->CreateInstrumentationCache(jit_options_->GetCompileThreshold()); 1671 jit_->CreateThreadPool(); 1672 } else { 1673 LOG(WARNING) << "Failed to create JIT " << error_msg; 1674 } 1675} 1676 1677bool Runtime::CanRelocate() const { 1678 return !IsAotCompiler() || compiler_callbacks_->IsRelocationPossible(); 1679} 1680 1681bool Runtime::IsCompilingBootImage() const { 1682 return IsCompiler() && compiler_callbacks_->IsBootImage(); 1683} 1684 1685} // namespace art 1686