runtime.cc revision bb87e0f1a52de656bc77cb01cb887e51a0e5198b
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 133struct TraceConfig { 134 Trace::TraceMode trace_mode; 135 Trace::TraceOutputMode trace_output_mode; 136 std::string trace_file; 137 size_t trace_file_size; 138}; 139 140Runtime::Runtime() 141 : instruction_set_(kNone), 142 compiler_callbacks_(nullptr), 143 is_zygote_(false), 144 must_relocate_(false), 145 is_concurrent_gc_enabled_(true), 146 is_explicit_gc_disabled_(false), 147 dex2oat_enabled_(true), 148 image_dex2oat_enabled_(true), 149 default_stack_size_(0), 150 heap_(nullptr), 151 max_spins_before_thin_lock_inflation_(Monitor::kDefaultMaxSpinsBeforeThinLockInflation), 152 monitor_list_(nullptr), 153 monitor_pool_(nullptr), 154 thread_list_(nullptr), 155 intern_table_(nullptr), 156 class_linker_(nullptr), 157 signal_catcher_(nullptr), 158 java_vm_(nullptr), 159 fault_message_lock_("Fault message lock"), 160 fault_message_(""), 161 threads_being_born_(0), 162 shutdown_cond_(new ConditionVariable("Runtime shutdown", *Locks::runtime_shutdown_lock_)), 163 shutting_down_(false), 164 shutting_down_started_(false), 165 started_(false), 166 finished_starting_(false), 167 vfprintf_(nullptr), 168 exit_(nullptr), 169 abort_(nullptr), 170 stats_enabled_(false), 171 running_on_valgrind_(RUNNING_ON_VALGRIND > 0), 172 profiler_started_(false), 173 instrumentation_(), 174 main_thread_group_(nullptr), 175 system_thread_group_(nullptr), 176 system_class_loader_(nullptr), 177 dump_gc_performance_on_shutdown_(false), 178 preinitialization_transaction_(nullptr), 179 verify_(false), 180 allow_dex_file_fallback_(true), 181 target_sdk_version_(0), 182 implicit_null_checks_(false), 183 implicit_so_checks_(false), 184 implicit_suspend_checks_(false), 185 is_native_bridge_loaded_(false), 186 zygote_max_failed_boots_(0) { 187 CheckAsmSupportOffsetsAndSizes(); 188} 189 190Runtime::~Runtime() { 191 if (is_native_bridge_loaded_) { 192 UnloadNativeBridge(); 193 } 194 if (dump_gc_performance_on_shutdown_) { 195 // This can't be called from the Heap destructor below because it 196 // could call RosAlloc::InspectAll() which needs the thread_list 197 // to be still alive. 198 heap_->DumpGcPerformanceInfo(LOG(INFO)); 199 } 200 201 Thread* self = Thread::Current(); 202 const bool attach_shutdown_thread = self == nullptr; 203 if (attach_shutdown_thread) { 204 CHECK(AttachCurrentThread("Shutdown thread", false, nullptr, false)); 205 self = Thread::Current(); 206 } else { 207 LOG(WARNING) << "Current thread not detached in Runtime shutdown"; 208 } 209 210 { 211 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 212 shutting_down_started_ = true; 213 while (threads_being_born_ > 0) { 214 shutdown_cond_->Wait(self); 215 } 216 shutting_down_ = true; 217 } 218 // Shutdown and wait for the daemons. 219 CHECK(self != nullptr); 220 if (IsFinishedStarting()) { 221 self->ClearException(); 222 self->GetJniEnv()->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 223 WellKnownClasses::java_lang_Daemons_stop); 224 } 225 if (attach_shutdown_thread) { 226 DetachCurrentThread(); 227 self = nullptr; 228 } 229 230 // Shut down background profiler before the runtime exits. 231 if (profiler_started_) { 232 BackgroundMethodSamplingProfiler::Shutdown(); 233 } 234 235 Trace::Shutdown(); 236 237 // Make sure to let the GC complete if it is running. 238 heap_->WaitForGcToComplete(gc::kGcCauseBackground, self); 239 heap_->DeleteThreadPool(); 240 if (jit_.get() != nullptr) { 241 VLOG(jit) << "Deleting jit thread pool"; 242 // Delete thread pool before the thread list since we don't want to wait forever on the 243 // JIT compiler threads. 244 jit_->DeleteThreadPool(); 245 } 246 247 // Make sure our internal threads are dead before we start tearing down things they're using. 248 Dbg::StopJdwp(); 249 delete signal_catcher_; 250 251 // Make sure all other non-daemon threads have terminated, and all daemon threads are suspended. 252 delete thread_list_; 253 254 // Delete the JIT after thread list to ensure that there is no remaining threads which could be 255 // accessing the instrumentation when we delete it. 256 if (jit_.get() != nullptr) { 257 VLOG(jit) << "Deleting jit"; 258 jit_.reset(nullptr); 259 } 260 arena_pool_.reset(); 261 262 // Shutdown the fault manager if it was initialized. 263 fault_manager.Shutdown(); 264 265 delete monitor_list_; 266 delete monitor_pool_; 267 delete class_linker_; 268 delete heap_; 269 delete intern_table_; 270 delete java_vm_; 271 Thread::Shutdown(); 272 QuasiAtomic::Shutdown(); 273 verifier::MethodVerifier::Shutdown(); 274 MemMap::Shutdown(); 275 // TODO: acquire a static mutex on Runtime to avoid racing. 276 CHECK(instance_ == nullptr || instance_ == this); 277 instance_ = nullptr; 278} 279 280struct AbortState { 281 void Dump(std::ostream& os) const { 282 if (gAborting > 1) { 283 os << "Runtime aborting --- recursively, so no thread-specific detail!\n"; 284 return; 285 } 286 gAborting++; 287 os << "Runtime aborting...\n"; 288 if (Runtime::Current() == NULL) { 289 os << "(Runtime does not yet exist!)\n"; 290 return; 291 } 292 Thread* self = Thread::Current(); 293 if (self == nullptr) { 294 os << "(Aborting thread was not attached to runtime!)\n"; 295 DumpKernelStack(os, GetTid(), " kernel: ", false); 296 DumpNativeStack(os, GetTid(), " native: ", nullptr); 297 } else { 298 os << "Aborting thread:\n"; 299 if (Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)) { 300 DumpThread(os, self); 301 } else { 302 if (Locks::mutator_lock_->SharedTryLock(self)) { 303 DumpThread(os, self); 304 Locks::mutator_lock_->SharedUnlock(self); 305 } 306 } 307 } 308 DumpAllThreads(os, self); 309 } 310 311 // No thread-safety analysis as we do explicitly test for holding the mutator lock. 312 void DumpThread(std::ostream& os, Thread* self) const NO_THREAD_SAFETY_ANALYSIS { 313 DCHECK(Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)); 314 self->Dump(os); 315 if (self->IsExceptionPending()) { 316 mirror::Throwable* exception = self->GetException(); 317 os << "Pending exception " << exception->Dump(); 318 } 319 } 320 321 void DumpAllThreads(std::ostream& os, Thread* self) const { 322 Runtime* runtime = Runtime::Current(); 323 if (runtime != nullptr) { 324 ThreadList* thread_list = runtime->GetThreadList(); 325 if (thread_list != nullptr) { 326 bool tll_already_held = Locks::thread_list_lock_->IsExclusiveHeld(self); 327 bool ml_already_held = Locks::mutator_lock_->IsSharedHeld(self); 328 if (!tll_already_held || !ml_already_held) { 329 os << "Dumping all threads without appropriate locks held:" 330 << (!tll_already_held ? " thread list lock" : "") 331 << (!ml_already_held ? " mutator lock" : "") 332 << "\n"; 333 } 334 os << "All threads:\n"; 335 thread_list->Dump(os); 336 } 337 } 338 } 339}; 340 341void Runtime::Abort() { 342 gAborting++; // set before taking any locks 343 344 // Ensure that we don't have multiple threads trying to abort at once, 345 // which would result in significantly worse diagnostics. 346 MutexLock mu(Thread::Current(), *Locks::abort_lock_); 347 348 // Get any pending output out of the way. 349 fflush(NULL); 350 351 // Many people have difficulty distinguish aborts from crashes, 352 // so be explicit. 353 AbortState state; 354 LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state); 355 356 // Call the abort hook if we have one. 357 if (Runtime::Current() != NULL && Runtime::Current()->abort_ != NULL) { 358 LOG(INTERNAL_FATAL) << "Calling abort hook..."; 359 Runtime::Current()->abort_(); 360 // notreached 361 LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!"; 362 } 363 364#if defined(__GLIBC__) 365 // TODO: we ought to be able to use pthread_kill(3) here (or abort(3), 366 // which POSIX defines in terms of raise(3), which POSIX defines in terms 367 // of pthread_kill(3)). On Linux, though, libcorkscrew can't unwind through 368 // libpthread, which means the stacks we dump would be useless. Calling 369 // tgkill(2) directly avoids that. 370 syscall(__NR_tgkill, getpid(), GetTid(), SIGABRT); 371 // TODO: LLVM installs it's own SIGABRT handler so exit to be safe... Can we disable that in LLVM? 372 // If not, we could use sigaction(3) before calling tgkill(2) and lose this call to exit(3). 373 exit(1); 374#else 375 abort(); 376#endif 377 // notreached 378} 379 380void Runtime::PreZygoteFork() { 381 heap_->PreZygoteFork(); 382} 383 384void Runtime::CallExitHook(jint status) { 385 if (exit_ != NULL) { 386 ScopedThreadStateChange tsc(Thread::Current(), kNative); 387 exit_(status); 388 LOG(WARNING) << "Exit hook returned instead of exiting!"; 389 } 390} 391 392void Runtime::SweepSystemWeaks(IsMarkedCallback* visitor, void* arg) { 393 GetInternTable()->SweepInternTableWeaks(visitor, arg); 394 GetMonitorList()->SweepMonitorList(visitor, arg); 395 GetJavaVM()->SweepJniWeakGlobals(visitor, arg); 396} 397 398bool Runtime::Create(const RuntimeOptions& options, bool ignore_unrecognized) { 399 // TODO: acquire a static mutex on Runtime to avoid racing. 400 if (Runtime::instance_ != NULL) { 401 return false; 402 } 403 InitLogging(NULL); // Calls Locks::Init() as a side effect. 404 instance_ = new Runtime; 405 if (!instance_->Init(options, ignore_unrecognized)) { 406 // TODO: Currently deleting the instance will abort the runtime on destruction. Now This will 407 // leak memory, instead. Fix the destructor. b/19100793. 408 // delete instance_; 409 instance_ = NULL; 410 return false; 411 } 412 return true; 413} 414 415static jobject CreateSystemClassLoader(Runtime* runtime) { 416 if (runtime->IsAotCompiler() && !runtime->GetCompilerCallbacks()->IsBootImage()) { 417 return nullptr; 418 } 419 420 ScopedObjectAccess soa(Thread::Current()); 421 ClassLinker* cl = Runtime::Current()->GetClassLinker(); 422 423 StackHandleScope<2> hs(soa.Self()); 424 Handle<mirror::Class> class_loader_class( 425 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader))); 426 CHECK(cl->EnsureInitialized(soa.Self(), class_loader_class, true, true)); 427 428 mirror::ArtMethod* getSystemClassLoader = 429 class_loader_class->FindDirectMethod("getSystemClassLoader", "()Ljava/lang/ClassLoader;"); 430 CHECK(getSystemClassLoader != NULL); 431 432 JValue result = InvokeWithJValues(soa, nullptr, soa.EncodeMethod(getSystemClassLoader), nullptr); 433 JNIEnv* env = soa.Self()->GetJniEnv(); 434 ScopedLocalRef<jobject> system_class_loader(env, 435 soa.AddLocalReference<jobject>(result.GetL())); 436 CHECK(system_class_loader.get() != nullptr); 437 438 soa.Self()->SetClassLoaderOverride(system_class_loader.get()); 439 440 Handle<mirror::Class> thread_class( 441 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread))); 442 CHECK(cl->EnsureInitialized(soa.Self(), thread_class, true, true)); 443 444 mirror::ArtField* contextClassLoader = 445 thread_class->FindDeclaredInstanceField("contextClassLoader", "Ljava/lang/ClassLoader;"); 446 CHECK(contextClassLoader != NULL); 447 448 // We can't run in a transaction yet. 449 contextClassLoader->SetObject<false>(soa.Self()->GetPeer(), 450 soa.Decode<mirror::ClassLoader*>(system_class_loader.get())); 451 452 return env->NewGlobalRef(system_class_loader.get()); 453} 454 455std::string Runtime::GetPatchoatExecutable() const { 456 if (!patchoat_executable_.empty()) { 457 return patchoat_executable_; 458 } 459 std::string patchoat_executable(GetAndroidRoot()); 460 patchoat_executable += (kIsDebugBuild ? "/bin/patchoatd" : "/bin/patchoat"); 461 return patchoat_executable; 462} 463 464std::string Runtime::GetCompilerExecutable() const { 465 if (!compiler_executable_.empty()) { 466 return compiler_executable_; 467 } 468 std::string compiler_executable(GetAndroidRoot()); 469 compiler_executable += (kIsDebugBuild ? "/bin/dex2oatd" : "/bin/dex2oat"); 470 return compiler_executable; 471} 472 473bool Runtime::Start() { 474 VLOG(startup) << "Runtime::Start entering"; 475 476 // Restore main thread state to kNative as expected by native code. 477 Thread* self = Thread::Current(); 478 479 self->TransitionFromRunnableToSuspended(kNative); 480 481 started_ = true; 482 483 // Use !IsAotCompiler so that we get test coverage, tests are never the zygote. 484 if (!IsAotCompiler()) { 485 ScopedObjectAccess soa(self); 486 gc::space::ImageSpace* image_space = heap_->GetImageSpace(); 487 if (image_space != nullptr) { 488 GetInternTable()->AddImageStringsToTable(image_space); 489 GetClassLinker()->MoveImageClassesToClassTable(); 490 } 491 } 492 493 // If we are the zygote then we need to wait until after forking to create the code cache 494 // due to SELinux restrictions on r/w/x memory regions. 495 if (!IsZygote() && jit_options_->UseJIT()) { 496 CreateJit(); 497 } 498 499 if (!IsImageDex2OatEnabled() || !GetHeap()->HasImageSpace()) { 500 ScopedObjectAccess soa(self); 501 StackHandleScope<1> hs(soa.Self()); 502 auto klass(hs.NewHandle<mirror::Class>(mirror::Class::GetJavaLangClass())); 503 class_linker_->EnsureInitialized(soa.Self(), klass, true, true); 504 } 505 506 // InitNativeMethods needs to be after started_ so that the classes 507 // it touches will have methods linked to the oat file if necessary. 508 InitNativeMethods(); 509 510 // Initialize well known thread group values that may be accessed threads while attaching. 511 InitThreadGroups(self); 512 513 Thread::FinishStartup(); 514 515 system_class_loader_ = CreateSystemClassLoader(this); 516 517 if (is_zygote_) { 518 if (!InitZygote()) { 519 return false; 520 } 521 } else { 522 if (is_native_bridge_loaded_) { 523 PreInitializeNativeBridge("."); 524 } 525 DidForkFromZygote(self->GetJniEnv(), NativeBridgeAction::kInitialize, 526 GetInstructionSetString(kRuntimeISA)); 527 } 528 529 StartDaemonThreads(); 530 531 { 532 ScopedObjectAccess soa(self); 533 self->GetJniEnv()->locals.AssertEmpty(); 534 } 535 536 VLOG(startup) << "Runtime::Start exiting"; 537 finished_starting_ = true; 538 539 if (profiler_options_.IsEnabled() && !profile_output_filename_.empty()) { 540 // User has asked for a profile using -Xenable-profiler. 541 // Create the profile file if it doesn't exist. 542 int fd = open(profile_output_filename_.c_str(), O_RDWR|O_CREAT|O_EXCL, 0660); 543 if (fd >= 0) { 544 close(fd); 545 } else if (errno != EEXIST) { 546 LOG(INFO) << "Failed to access the profile file. Profiler disabled."; 547 return true; 548 } 549 StartProfiler(profile_output_filename_.c_str()); 550 } 551 552 return true; 553} 554 555void Runtime::EndThreadBirth() EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_) { 556 DCHECK_GT(threads_being_born_, 0U); 557 threads_being_born_--; 558 if (shutting_down_started_ && threads_being_born_ == 0) { 559 shutdown_cond_->Broadcast(Thread::Current()); 560 } 561} 562 563// Do zygote-mode-only initialization. 564bool Runtime::InitZygote() { 565#ifdef __linux__ 566 // zygote goes into its own process group 567 setpgid(0, 0); 568 569 // See storage config details at http://source.android.com/tech/storage/ 570 // Create private mount namespace shared by all children 571 if (unshare(CLONE_NEWNS) == -1) { 572 PLOG(WARNING) << "Failed to unshare()"; 573 return false; 574 } 575 576 // Mark rootfs as being a slave so that changes from default 577 // namespace only flow into our children. 578 if (mount("rootfs", "/", NULL, (MS_SLAVE | MS_REC), NULL) == -1) { 579 PLOG(WARNING) << "Failed to mount() rootfs as MS_SLAVE"; 580 return false; 581 } 582 583 // Create a staging tmpfs that is shared by our children; they will 584 // bind mount storage into their respective private namespaces, which 585 // are isolated from each other. 586 const char* target_base = getenv("EMULATED_STORAGE_TARGET"); 587 if (target_base != NULL) { 588 if (mount("tmpfs", target_base, "tmpfs", MS_NOSUID | MS_NODEV, 589 "uid=0,gid=1028,mode=0751") == -1) { 590 LOG(WARNING) << "Failed to mount tmpfs to " << target_base; 591 return false; 592 } 593 } 594 595 return true; 596#else 597 UNIMPLEMENTED(FATAL); 598 return false; 599#endif 600} 601 602void Runtime::DidForkFromZygote(JNIEnv* env, NativeBridgeAction action, const char* isa) { 603 is_zygote_ = false; 604 605 if (is_native_bridge_loaded_) { 606 switch (action) { 607 case NativeBridgeAction::kUnload: 608 UnloadNativeBridge(); 609 is_native_bridge_loaded_ = false; 610 break; 611 612 case NativeBridgeAction::kInitialize: 613 InitializeNativeBridge(env, isa); 614 break; 615 } 616 } 617 618 // Create the thread pools. 619 heap_->CreateThreadPool(); 620 if (jit_.get() == nullptr && jit_options_->UseJIT()) { 621 // Create the JIT if the flag is set and we haven't already create it (happens for run-tests). 622 CreateJit(); 623 } 624 625 StartSignalCatcher(); 626 627 // Start the JDWP thread. If the command-line debugger flags specified "suspend=y", 628 // this will pause the runtime, so we probably want this to come last. 629 Dbg::StartJdwp(); 630} 631 632void Runtime::StartSignalCatcher() { 633 if (!is_zygote_) { 634 signal_catcher_ = new SignalCatcher(stack_trace_file_); 635 } 636} 637 638bool Runtime::IsShuttingDown(Thread* self) { 639 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 640 return IsShuttingDownLocked(); 641} 642 643void Runtime::StartDaemonThreads() { 644 VLOG(startup) << "Runtime::StartDaemonThreads entering"; 645 646 Thread* self = Thread::Current(); 647 648 // Must be in the kNative state for calling native methods. 649 CHECK_EQ(self->GetState(), kNative); 650 651 JNIEnv* env = self->GetJniEnv(); 652 env->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 653 WellKnownClasses::java_lang_Daemons_start); 654 if (env->ExceptionCheck()) { 655 env->ExceptionDescribe(); 656 LOG(FATAL) << "Error starting java.lang.Daemons"; 657 } 658 659 VLOG(startup) << "Runtime::StartDaemonThreads exiting"; 660} 661 662static bool OpenDexFilesFromImage(const std::string& image_location, 663 std::vector<std::unique_ptr<const DexFile>>* dex_files, 664 size_t* failures) { 665 DCHECK(dex_files != nullptr) << "OpenDexFilesFromImage: out-param is NULL"; 666 std::string system_filename; 667 bool has_system = false; 668 std::string cache_filename_unused; 669 bool dalvik_cache_exists_unused; 670 bool has_cache_unused; 671 bool is_global_cache_unused; 672 bool found_image = gc::space::ImageSpace::FindImageFilename(image_location.c_str(), 673 kRuntimeISA, 674 &system_filename, 675 &has_system, 676 &cache_filename_unused, 677 &dalvik_cache_exists_unused, 678 &has_cache_unused, 679 &is_global_cache_unused); 680 *failures = 0; 681 if (!found_image || !has_system) { 682 return false; 683 } 684 std::string error_msg; 685 // We are falling back to non-executable use of the oat file because patching failed, presumably 686 // due to lack of space. 687 std::string oat_filename = ImageHeader::GetOatLocationFromImageLocation(system_filename.c_str()); 688 std::string oat_location = ImageHeader::GetOatLocationFromImageLocation(image_location.c_str()); 689 std::unique_ptr<File> file(OS::OpenFileForReading(oat_filename.c_str())); 690 if (file.get() == nullptr) { 691 return false; 692 } 693 std::unique_ptr<ElfFile> elf_file(ElfFile::Open(file.release(), false, false, &error_msg)); 694 if (elf_file.get() == nullptr) { 695 return false; 696 } 697 std::unique_ptr<OatFile> oat_file(OatFile::OpenWithElfFile(elf_file.release(), oat_location, 698 nullptr, &error_msg)); 699 if (oat_file.get() == nullptr) { 700 LOG(INFO) << "Unable to use '" << oat_filename << "' because " << error_msg; 701 return false; 702 } 703 704 for (const OatFile::OatDexFile* oat_dex_file : oat_file->GetOatDexFiles()) { 705 if (oat_dex_file == nullptr) { 706 *failures += 1; 707 continue; 708 } 709 std::unique_ptr<const DexFile> dex_file = oat_dex_file->OpenDexFile(&error_msg); 710 if (dex_file.get() == nullptr) { 711 *failures += 1; 712 } else { 713 dex_files->push_back(std::move(dex_file)); 714 } 715 } 716 Runtime::Current()->GetClassLinker()->RegisterOatFile(oat_file.release()); 717 return true; 718} 719 720 721static size_t OpenDexFiles(const std::vector<std::string>& dex_filenames, 722 const std::vector<std::string>& dex_locations, 723 const std::string& image_location, 724 std::vector<std::unique_ptr<const DexFile>>* dex_files) { 725 DCHECK(dex_files != nullptr) << "OpenDexFiles: out-param is NULL"; 726 size_t failure_count = 0; 727 if (!image_location.empty() && OpenDexFilesFromImage(image_location, dex_files, &failure_count)) { 728 return failure_count; 729 } 730 failure_count = 0; 731 for (size_t i = 0; i < dex_filenames.size(); i++) { 732 const char* dex_filename = dex_filenames[i].c_str(); 733 const char* dex_location = dex_locations[i].c_str(); 734 std::string error_msg; 735 if (!OS::FileExists(dex_filename)) { 736 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 737 continue; 738 } 739 if (!DexFile::Open(dex_filename, dex_location, &error_msg, dex_files)) { 740 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 741 ++failure_count; 742 } 743 } 744 return failure_count; 745} 746 747bool Runtime::Init(const RuntimeOptions& raw_options, bool ignore_unrecognized) { 748 CHECK_EQ(sysconf(_SC_PAGE_SIZE), kPageSize); 749 750 MemMap::Init(); 751 752 using Opt = RuntimeArgumentMap; 753 RuntimeArgumentMap runtime_options; 754 std::unique_ptr<ParsedOptions> parsed_options( 755 ParsedOptions::Create(raw_options, ignore_unrecognized, &runtime_options)); 756 if (parsed_options.get() == nullptr) { 757 LOG(ERROR) << "Failed to parse options"; 758 return false; 759 } 760 VLOG(startup) << "Runtime::Init -verbose:startup enabled"; 761 762 QuasiAtomic::Startup(); 763 764 Monitor::Init(runtime_options.GetOrDefault(Opt::LockProfThreshold), 765 runtime_options.GetOrDefault(Opt::HookIsSensitiveThread)); 766 767 boot_class_path_string_ = runtime_options.ReleaseOrDefault(Opt::BootClassPath); 768 class_path_string_ = runtime_options.ReleaseOrDefault(Opt::ClassPath); 769 properties_ = runtime_options.ReleaseOrDefault(Opt::PropertiesList); 770 771 compiler_callbacks_ = runtime_options.GetOrDefault(Opt::CompilerCallbacksPtr); 772 patchoat_executable_ = runtime_options.ReleaseOrDefault(Opt::PatchOat); 773 must_relocate_ = runtime_options.GetOrDefault(Opt::Relocate); 774 is_zygote_ = runtime_options.Exists(Opt::Zygote); 775 is_explicit_gc_disabled_ = runtime_options.Exists(Opt::DisableExplicitGC); 776 dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::Dex2Oat); 777 image_dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::ImageDex2Oat); 778 779 vfprintf_ = runtime_options.GetOrDefault(Opt::HookVfprintf); 780 exit_ = runtime_options.GetOrDefault(Opt::HookExit); 781 abort_ = runtime_options.GetOrDefault(Opt::HookAbort); 782 783 default_stack_size_ = runtime_options.GetOrDefault(Opt::StackSize); 784 stack_trace_file_ = runtime_options.ReleaseOrDefault(Opt::StackTraceFile); 785 786 compiler_executable_ = runtime_options.ReleaseOrDefault(Opt::Compiler); 787 compiler_options_ = runtime_options.ReleaseOrDefault(Opt::CompilerOptions); 788 image_compiler_options_ = runtime_options.ReleaseOrDefault(Opt::ImageCompilerOptions); 789 image_location_ = runtime_options.GetOrDefault(Opt::Image); 790 791 max_spins_before_thin_lock_inflation_ = 792 runtime_options.GetOrDefault(Opt::MaxSpinsBeforeThinLockInflation); 793 794 monitor_list_ = new MonitorList; 795 monitor_pool_ = MonitorPool::Create(); 796 thread_list_ = new ThreadList; 797 intern_table_ = new InternTable; 798 799 verify_ = runtime_options.GetOrDefault(Opt::Verify); 800 allow_dex_file_fallback_ = !runtime_options.Exists(Opt::NoDexFileFallback); 801 802 Split(runtime_options.GetOrDefault(Opt::CpuAbiList), ',', &cpu_abilist_); 803 804 if (runtime_options.GetOrDefault(Opt::Interpret)) { 805 GetInstrumentation()->ForceInterpretOnly(); 806 } 807 808 zygote_max_failed_boots_ = runtime_options.GetOrDefault(Opt::ZygoteMaxFailedBoots); 809 810 XGcOption xgc_option = runtime_options.GetOrDefault(Opt::GcOption); 811 heap_ = new gc::Heap(runtime_options.GetOrDefault(Opt::MemoryInitialSize), 812 runtime_options.GetOrDefault(Opt::HeapGrowthLimit), 813 runtime_options.GetOrDefault(Opt::HeapMinFree), 814 runtime_options.GetOrDefault(Opt::HeapMaxFree), 815 runtime_options.GetOrDefault(Opt::HeapTargetUtilization), 816 runtime_options.GetOrDefault(Opt::ForegroundHeapGrowthMultiplier), 817 runtime_options.GetOrDefault(Opt::MemoryMaximumSize), 818 runtime_options.GetOrDefault(Opt::NonMovingSpaceCapacity), 819 runtime_options.GetOrDefault(Opt::Image), 820 runtime_options.GetOrDefault(Opt::ImageInstructionSet), 821 xgc_option.collector_type_, 822 runtime_options.GetOrDefault(Opt::BackgroundGc), 823 runtime_options.GetOrDefault(Opt::LargeObjectSpace), 824 runtime_options.GetOrDefault(Opt::LargeObjectThreshold), 825 runtime_options.GetOrDefault(Opt::ParallelGCThreads), 826 runtime_options.GetOrDefault(Opt::ConcGCThreads), 827 runtime_options.Exists(Opt::LowMemoryMode), 828 runtime_options.GetOrDefault(Opt::LongPauseLogThreshold), 829 runtime_options.GetOrDefault(Opt::LongGCLogThreshold), 830 runtime_options.Exists(Opt::IgnoreMaxFootprint), 831 runtime_options.GetOrDefault(Opt::UseTLAB), 832 xgc_option.verify_pre_gc_heap_, 833 xgc_option.verify_pre_sweeping_heap_, 834 xgc_option.verify_post_gc_heap_, 835 xgc_option.verify_pre_gc_rosalloc_, 836 xgc_option.verify_pre_sweeping_rosalloc_, 837 xgc_option.verify_post_gc_rosalloc_, 838 runtime_options.GetOrDefault(Opt::EnableHSpaceCompactForOOM), 839 runtime_options.GetOrDefault(Opt::HSpaceCompactForOOMMinIntervalsMs)); 840 841 if (heap_->GetImageSpace() == nullptr && !allow_dex_file_fallback_) { 842 LOG(ERROR) << "Dex file fallback disabled, cannot continue without image."; 843 return false; 844 } 845 846 dump_gc_performance_on_shutdown_ = runtime_options.Exists(Opt::DumpGCPerformanceOnShutdown); 847 848 if (runtime_options.Exists(Opt::JdwpOptions)) { 849 Dbg::ConfigureJdwp(runtime_options.GetOrDefault(Opt::JdwpOptions)); 850 } 851 852 jit_options_.reset(jit::JitOptions::CreateFromRuntimeArguments(runtime_options)); 853 bool use_jit = jit_options_->UseJIT(); 854 if (IsAotCompiler()) { 855 // If we are already the compiler at this point, we must be dex2oat. Don't create the jit in 856 // this case. 857 // If runtime_options doesn't have UseJIT set to true then CreateFromRuntimeArguments returns 858 // nullptr and we don't create the jit. 859 use_jit = false; 860 } 861 862 // Use MemMap arena pool for jit, malloc otherwise. Malloc arenas are faster to allocate but 863 // can't be trimmed as easily. 864 const bool use_malloc = !use_jit; 865 arena_pool_.reset(new ArenaPool(use_malloc)); 866 867 BlockSignals(); 868 InitPlatformSignalHandlers(); 869 870 // Change the implicit checks flags based on runtime architecture. 871 switch (kRuntimeISA) { 872 case kArm: 873 case kThumb2: 874 case kX86: 875 case kArm64: 876 case kX86_64: 877 implicit_null_checks_ = true; 878 // Installing stack protection does not play well with valgrind. 879 implicit_so_checks_ = (RUNNING_ON_VALGRIND == 0); 880 break; 881 default: 882 // Keep the defaults. 883 break; 884 } 885 886 // Always initialize the signal chain so that any calls to sigaction get 887 // correctly routed to the next in the chain regardless of whether we 888 // have claimed the signal or not. 889 InitializeSignalChain(); 890 891 if (implicit_null_checks_ || implicit_so_checks_ || implicit_suspend_checks_) { 892 fault_manager.Init(); 893 894 // These need to be in a specific order. The null point check handler must be 895 // after the suspend check and stack overflow check handlers. 896 // 897 // Note: the instances attach themselves to the fault manager and are handled by it. The manager 898 // will delete the instance on Shutdown(). 899 if (implicit_suspend_checks_) { 900 new SuspensionHandler(&fault_manager); 901 } 902 903 if (implicit_so_checks_) { 904 new StackOverflowHandler(&fault_manager); 905 } 906 907 if (implicit_null_checks_) { 908 new NullPointerHandler(&fault_manager); 909 } 910 911 if (kEnableJavaStackTraceHandler) { 912 new JavaStackTraceHandler(&fault_manager); 913 } 914 } 915 916 java_vm_ = new JavaVMExt(this, runtime_options); 917 918 Thread::Startup(); 919 920 // ClassLinker needs an attached thread, but we can't fully attach a thread without creating 921 // objects. We can't supply a thread group yet; it will be fixed later. Since we are the main 922 // thread, we do not get a java peer. 923 Thread* self = Thread::Attach("main", false, nullptr, false); 924 CHECK_EQ(self->GetThreadId(), ThreadList::kMainThreadId); 925 CHECK(self != nullptr); 926 927 // Set us to runnable so tools using a runtime can allocate and GC by default 928 self->TransitionFromSuspendedToRunnable(); 929 930 // Now we're attached, we can take the heap locks and validate the heap. 931 GetHeap()->EnableObjectValidation(); 932 933 CHECK_GE(GetHeap()->GetContinuousSpaces().size(), 1U); 934 class_linker_ = new ClassLinker(intern_table_); 935 if (GetHeap()->HasImageSpace()) { 936 class_linker_->InitFromImage(); 937 if (kIsDebugBuild) { 938 GetHeap()->GetImageSpace()->VerifyImageAllocations(); 939 } 940 if (boot_class_path_string_.empty()) { 941 // The bootclasspath is not explicitly specified: construct it from the loaded dex files. 942 const std::vector<const DexFile*>& boot_class_path = GetClassLinker()->GetBootClassPath(); 943 std::vector<std::string> dex_locations; 944 dex_locations.reserve(boot_class_path.size()); 945 for (const DexFile* dex_file : boot_class_path) { 946 dex_locations.push_back(dex_file->GetLocation()); 947 } 948 boot_class_path_string_ = Join(dex_locations, ':'); 949 } 950 } else { 951 std::vector<std::string> dex_filenames; 952 Split(boot_class_path_string_, ':', &dex_filenames); 953 954 std::vector<std::string> dex_locations; 955 if (!runtime_options.Exists(Opt::BootClassPathLocations)) { 956 dex_locations = dex_filenames; 957 } else { 958 dex_locations = runtime_options.GetOrDefault(Opt::BootClassPathLocations); 959 CHECK_EQ(dex_filenames.size(), dex_locations.size()); 960 } 961 962 std::vector<std::unique_ptr<const DexFile>> boot_class_path; 963 OpenDexFiles(dex_filenames, 964 dex_locations, 965 runtime_options.GetOrDefault(Opt::Image), 966 &boot_class_path); 967 instruction_set_ = runtime_options.GetOrDefault(Opt::ImageInstructionSet); 968 class_linker_->InitWithoutImage(std::move(boot_class_path)); 969 970 // TODO: Should we move the following to InitWithoutImage? 971 SetInstructionSet(instruction_set_); 972 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 973 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 974 if (!HasCalleeSaveMethod(type)) { 975 SetCalleeSaveMethod(CreateCalleeSaveMethod(), type); 976 } 977 } 978 } 979 980 CHECK(class_linker_ != nullptr); 981 982 // Initialize the special sentinel_ value early. 983 sentinel_ = GcRoot<mirror::Object>(class_linker_->AllocObject(self)); 984 CHECK(sentinel_.Read() != nullptr); 985 986 verifier::MethodVerifier::Init(); 987 988 if (runtime_options.Exists(Opt::MethodTrace)) { 989 trace_config_.reset(new TraceConfig()); 990 trace_config_->trace_file = runtime_options.ReleaseOrDefault(Opt::MethodTraceFile); 991 trace_config_->trace_file_size = runtime_options.ReleaseOrDefault(Opt::MethodTraceFileSize); 992 trace_config_->trace_mode = Trace::TraceMode::kMethodTracing; 993 trace_config_->trace_output_mode = Trace::TraceOutputMode::kFile; 994 } 995 996 { 997 auto&& profiler_options = runtime_options.ReleaseOrDefault(Opt::ProfilerOpts); 998 profile_output_filename_ = profiler_options.output_file_name_; 999 1000 // TODO: Don't do this, just change ProfilerOptions to include the output file name? 1001 ProfilerOptions other_options( 1002 profiler_options.enabled_, 1003 profiler_options.period_s_, 1004 profiler_options.duration_s_, 1005 profiler_options.interval_us_, 1006 profiler_options.backoff_coefficient_, 1007 profiler_options.start_immediately_, 1008 profiler_options.top_k_threshold_, 1009 profiler_options.top_k_change_threshold_, 1010 profiler_options.profile_type_, 1011 profiler_options.max_stack_depth_); 1012 1013 profiler_options_ = other_options; 1014 } 1015 1016 // TODO: move this to just be an Trace::Start argument 1017 Trace::SetDefaultClockSource(runtime_options.GetOrDefault(Opt::ProfileClock)); 1018 1019 if (trace_config_.get() != nullptr) { 1020 ScopedThreadStateChange tsc(self, kWaitingForMethodTracingStart); 1021 Trace::Start(trace_config_->trace_file.c_str(), 1022 -1, 1023 static_cast<int>(trace_config_->trace_file_size), 1024 0, 1025 trace_config_->trace_output_mode, 1026 trace_config_->trace_mode, 1027 0); 1028 } 1029 1030 // Pre-allocate an OutOfMemoryError for the double-OOME case. 1031 self->ThrowNewException("Ljava/lang/OutOfMemoryError;", 1032 "OutOfMemoryError thrown while trying to throw OutOfMemoryError; " 1033 "no stack trace available"); 1034 pre_allocated_OutOfMemoryError_ = GcRoot<mirror::Throwable>(self->GetException()); 1035 self->ClearException(); 1036 1037 // Pre-allocate a NoClassDefFoundError for the common case of failing to find a system class 1038 // ahead of checking the application's class loader. 1039 self->ThrowNewException("Ljava/lang/NoClassDefFoundError;", 1040 "Class not found using the boot class loader; no stack trace available"); 1041 pre_allocated_NoClassDefFoundError_ = GcRoot<mirror::Throwable>(self->GetException()); 1042 self->ClearException(); 1043 1044 // Look for a native bridge. 1045 // 1046 // The intended flow here is, in the case of a running system: 1047 // 1048 // Runtime::Init() (zygote): 1049 // LoadNativeBridge -> dlopen from cmd line parameter. 1050 // | 1051 // V 1052 // Runtime::Start() (zygote): 1053 // No-op wrt native bridge. 1054 // | 1055 // | start app 1056 // V 1057 // DidForkFromZygote(action) 1058 // action = kUnload -> dlclose native bridge. 1059 // action = kInitialize -> initialize library 1060 // 1061 // 1062 // The intended flow here is, in the case of a simple dalvikvm call: 1063 // 1064 // Runtime::Init(): 1065 // LoadNativeBridge -> dlopen from cmd line parameter. 1066 // | 1067 // V 1068 // Runtime::Start(): 1069 // DidForkFromZygote(kInitialize) -> try to initialize any native bridge given. 1070 // No-op wrt native bridge. 1071 { 1072 std::string native_bridge_file_name = runtime_options.ReleaseOrDefault(Opt::NativeBridge); 1073 is_native_bridge_loaded_ = LoadNativeBridge(native_bridge_file_name); 1074 } 1075 1076 VLOG(startup) << "Runtime::Init exiting"; 1077 return true; 1078} 1079 1080void Runtime::InitNativeMethods() { 1081 VLOG(startup) << "Runtime::InitNativeMethods entering"; 1082 Thread* self = Thread::Current(); 1083 JNIEnv* env = self->GetJniEnv(); 1084 1085 // Must be in the kNative state for calling native methods (JNI_OnLoad code). 1086 CHECK_EQ(self->GetState(), kNative); 1087 1088 // First set up JniConstants, which is used by both the runtime's built-in native 1089 // methods and libcore. 1090 JniConstants::init(env); 1091 WellKnownClasses::Init(env); 1092 1093 // Then set up the native methods provided by the runtime itself. 1094 RegisterRuntimeNativeMethods(env); 1095 1096 // Then set up libcore, which is just a regular JNI library with a regular JNI_OnLoad. 1097 // Most JNI libraries can just use System.loadLibrary, but libcore can't because it's 1098 // the library that implements System.loadLibrary! 1099 { 1100 std::string reason; 1101 if (!java_vm_->LoadNativeLibrary(env, "libjavacore.so", nullptr, &reason)) { 1102 LOG(FATAL) << "LoadNativeLibrary failed for \"libjavacore.so\": " << reason; 1103 } 1104 } 1105 1106 // Initialize well known classes that may invoke runtime native methods. 1107 WellKnownClasses::LateInit(env); 1108 1109 VLOG(startup) << "Runtime::InitNativeMethods exiting"; 1110} 1111 1112void Runtime::InitThreadGroups(Thread* self) { 1113 JNIEnvExt* env = self->GetJniEnv(); 1114 ScopedJniEnvLocalRefState env_state(env); 1115 main_thread_group_ = 1116 env->NewGlobalRef(env->GetStaticObjectField( 1117 WellKnownClasses::java_lang_ThreadGroup, 1118 WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup)); 1119 CHECK(main_thread_group_ != NULL || IsAotCompiler()); 1120 system_thread_group_ = 1121 env->NewGlobalRef(env->GetStaticObjectField( 1122 WellKnownClasses::java_lang_ThreadGroup, 1123 WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup)); 1124 CHECK(system_thread_group_ != NULL || IsAotCompiler()); 1125} 1126 1127jobject Runtime::GetMainThreadGroup() const { 1128 CHECK(main_thread_group_ != NULL || IsAotCompiler()); 1129 return main_thread_group_; 1130} 1131 1132jobject Runtime::GetSystemThreadGroup() const { 1133 CHECK(system_thread_group_ != NULL || IsAotCompiler()); 1134 return system_thread_group_; 1135} 1136 1137jobject Runtime::GetSystemClassLoader() const { 1138 CHECK(system_class_loader_ != NULL || IsAotCompiler()); 1139 return system_class_loader_; 1140} 1141 1142void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) { 1143 register_dalvik_system_DexFile(env); 1144 register_dalvik_system_VMDebug(env); 1145 register_dalvik_system_VMRuntime(env); 1146 register_dalvik_system_VMStack(env); 1147 register_dalvik_system_ZygoteHooks(env); 1148 register_java_lang_Class(env); 1149 register_java_lang_DexCache(env); 1150 register_java_lang_Object(env); 1151 register_java_lang_ref_FinalizerReference(env); 1152 register_java_lang_reflect_Array(env); 1153 register_java_lang_reflect_Constructor(env); 1154 register_java_lang_reflect_Field(env); 1155 register_java_lang_reflect_Method(env); 1156 register_java_lang_reflect_Proxy(env); 1157 register_java_lang_ref_Reference(env); 1158 register_java_lang_Runtime(env); 1159 register_java_lang_String(env); 1160 register_java_lang_System(env); 1161 register_java_lang_Thread(env); 1162 register_java_lang_Throwable(env); 1163 register_java_lang_VMClassLoader(env); 1164 register_java_util_concurrent_atomic_AtomicLong(env); 1165 register_org_apache_harmony_dalvik_ddmc_DdmServer(env); 1166 register_org_apache_harmony_dalvik_ddmc_DdmVmInternal(env); 1167 register_sun_misc_Unsafe(env); 1168} 1169 1170void Runtime::DumpForSigQuit(std::ostream& os) { 1171 GetClassLinker()->DumpForSigQuit(os); 1172 GetInternTable()->DumpForSigQuit(os); 1173 GetJavaVM()->DumpForSigQuit(os); 1174 GetHeap()->DumpForSigQuit(os); 1175 TrackedAllocators::Dump(os); 1176 os << "\n"; 1177 1178 thread_list_->DumpForSigQuit(os); 1179 BaseMutex::DumpAll(os); 1180} 1181 1182void Runtime::DumpLockHolders(std::ostream& os) { 1183 uint64_t mutator_lock_owner = Locks::mutator_lock_->GetExclusiveOwnerTid(); 1184 pid_t thread_list_lock_owner = GetThreadList()->GetLockOwner(); 1185 pid_t classes_lock_owner = GetClassLinker()->GetClassesLockOwner(); 1186 pid_t dex_lock_owner = GetClassLinker()->GetDexLockOwner(); 1187 if ((thread_list_lock_owner | classes_lock_owner | dex_lock_owner) != 0) { 1188 os << "Mutator lock exclusive owner tid: " << mutator_lock_owner << "\n" 1189 << "ThreadList lock owner tid: " << thread_list_lock_owner << "\n" 1190 << "ClassLinker classes lock owner tid: " << classes_lock_owner << "\n" 1191 << "ClassLinker dex lock owner tid: " << dex_lock_owner << "\n"; 1192 } 1193} 1194 1195void Runtime::SetStatsEnabled(bool new_state) { 1196 Thread* self = Thread::Current(); 1197 MutexLock mu(self, *Locks::instrument_entrypoints_lock_); 1198 if (new_state == true) { 1199 GetStats()->Clear(~0); 1200 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1201 self->GetStats()->Clear(~0); 1202 if (stats_enabled_ != new_state) { 1203 GetInstrumentation()->InstrumentQuickAllocEntryPointsLocked(); 1204 } 1205 } else if (stats_enabled_ != new_state) { 1206 GetInstrumentation()->UninstrumentQuickAllocEntryPointsLocked(); 1207 } 1208 stats_enabled_ = new_state; 1209} 1210 1211void Runtime::ResetStats(int kinds) { 1212 GetStats()->Clear(kinds & 0xffff); 1213 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1214 Thread::Current()->GetStats()->Clear(kinds >> 16); 1215} 1216 1217int32_t Runtime::GetStat(int kind) { 1218 RuntimeStats* stats; 1219 if (kind < (1<<16)) { 1220 stats = GetStats(); 1221 } else { 1222 stats = Thread::Current()->GetStats(); 1223 kind >>= 16; 1224 } 1225 switch (kind) { 1226 case KIND_ALLOCATED_OBJECTS: 1227 return stats->allocated_objects; 1228 case KIND_ALLOCATED_BYTES: 1229 return stats->allocated_bytes; 1230 case KIND_FREED_OBJECTS: 1231 return stats->freed_objects; 1232 case KIND_FREED_BYTES: 1233 return stats->freed_bytes; 1234 case KIND_GC_INVOCATIONS: 1235 return stats->gc_for_alloc_count; 1236 case KIND_CLASS_INIT_COUNT: 1237 return stats->class_init_count; 1238 case KIND_CLASS_INIT_TIME: 1239 // Convert ns to us, reduce to 32 bits. 1240 return static_cast<int>(stats->class_init_time_ns / 1000); 1241 case KIND_EXT_ALLOCATED_OBJECTS: 1242 case KIND_EXT_ALLOCATED_BYTES: 1243 case KIND_EXT_FREED_OBJECTS: 1244 case KIND_EXT_FREED_BYTES: 1245 return 0; // backward compatibility 1246 default: 1247 LOG(FATAL) << "Unknown statistic " << kind; 1248 return -1; // unreachable 1249 } 1250} 1251 1252void Runtime::BlockSignals() { 1253 SignalSet signals; 1254 signals.Add(SIGPIPE); 1255 // SIGQUIT is used to dump the runtime's state (including stack traces). 1256 signals.Add(SIGQUIT); 1257 // SIGUSR1 is used to initiate a GC. 1258 signals.Add(SIGUSR1); 1259 signals.Block(); 1260} 1261 1262bool Runtime::AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group, 1263 bool create_peer) { 1264 return Thread::Attach(thread_name, as_daemon, thread_group, create_peer) != NULL; 1265} 1266 1267void Runtime::DetachCurrentThread() { 1268 Thread* self = Thread::Current(); 1269 if (self == NULL) { 1270 LOG(FATAL) << "attempting to detach thread that is not attached"; 1271 } 1272 if (self->HasManagedStack()) { 1273 LOG(FATAL) << *Thread::Current() << " attempting to detach while still running code"; 1274 } 1275 thread_list_->Unregister(self); 1276} 1277 1278mirror::Throwable* Runtime::GetPreAllocatedOutOfMemoryError() { 1279 mirror::Throwable* oome = pre_allocated_OutOfMemoryError_.Read(); 1280 if (oome == nullptr) { 1281 LOG(ERROR) << "Failed to return pre-allocated OOME"; 1282 } 1283 return oome; 1284} 1285 1286mirror::Throwable* Runtime::GetPreAllocatedNoClassDefFoundError() { 1287 mirror::Throwable* ncdfe = pre_allocated_NoClassDefFoundError_.Read(); 1288 if (ncdfe == nullptr) { 1289 LOG(ERROR) << "Failed to return pre-allocated NoClassDefFoundError"; 1290 } 1291 return ncdfe; 1292} 1293 1294void Runtime::VisitConstantRoots(RootVisitor* visitor) { 1295 // Visit the classes held as static in mirror classes, these can be visited concurrently and only 1296 // need to be visited once per GC since they never change. 1297 mirror::ArtField::VisitRoots(visitor); 1298 mirror::ArtMethod::VisitRoots(visitor); 1299 mirror::Class::VisitRoots(visitor); 1300 mirror::Reference::VisitRoots(visitor); 1301 mirror::StackTraceElement::VisitRoots(visitor); 1302 mirror::String::VisitRoots(visitor); 1303 mirror::Throwable::VisitRoots(visitor); 1304 mirror::Field::VisitRoots(visitor); 1305 // Visit all the primitive array types classes. 1306 mirror::PrimitiveArray<uint8_t>::VisitRoots(visitor); // BooleanArray 1307 mirror::PrimitiveArray<int8_t>::VisitRoots(visitor); // ByteArray 1308 mirror::PrimitiveArray<uint16_t>::VisitRoots(visitor); // CharArray 1309 mirror::PrimitiveArray<double>::VisitRoots(visitor); // DoubleArray 1310 mirror::PrimitiveArray<float>::VisitRoots(visitor); // FloatArray 1311 mirror::PrimitiveArray<int32_t>::VisitRoots(visitor); // IntArray 1312 mirror::PrimitiveArray<int64_t>::VisitRoots(visitor); // LongArray 1313 mirror::PrimitiveArray<int16_t>::VisitRoots(visitor); // ShortArray 1314} 1315 1316void Runtime::VisitConcurrentRoots(RootVisitor* visitor, VisitRootFlags flags) { 1317 intern_table_->VisitRoots(visitor, flags); 1318 class_linker_->VisitRoots(visitor, flags); 1319 if ((flags & kVisitRootFlagNewRoots) == 0) { 1320 // Guaranteed to have no new roots in the constant roots. 1321 VisitConstantRoots(visitor); 1322 } 1323} 1324 1325void Runtime::VisitTransactionRoots(RootVisitor* visitor) { 1326 if (preinitialization_transaction_ != nullptr) { 1327 preinitialization_transaction_->VisitRoots(visitor); 1328 } 1329} 1330 1331void Runtime::VisitNonThreadRoots(RootVisitor* visitor) { 1332 java_vm_->VisitRoots(visitor); 1333 sentinel_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1334 pre_allocated_OutOfMemoryError_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1335 resolution_method_.VisitRoot(visitor, RootInfo(kRootVMInternal)); 1336 pre_allocated_NoClassDefFoundError_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1337 imt_conflict_method_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1338 imt_unimplemented_method_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1339 default_imt_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1340 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 1341 callee_save_methods_[i].VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1342 } 1343 verifier::MethodVerifier::VisitStaticRoots(visitor); 1344 VisitTransactionRoots(visitor); 1345 instrumentation_.VisitRoots(visitor); 1346} 1347 1348void Runtime::VisitNonConcurrentRoots(RootVisitor* visitor) { 1349 thread_list_->VisitRoots(visitor); 1350 VisitNonThreadRoots(visitor); 1351} 1352 1353void Runtime::VisitThreadRoots(RootVisitor* visitor) { 1354 thread_list_->VisitRoots(visitor); 1355} 1356 1357size_t Runtime::FlipThreadRoots(Closure* thread_flip_visitor, Closure* flip_callback, 1358 gc::collector::GarbageCollector* collector) { 1359 return thread_list_->FlipThreadRoots(thread_flip_visitor, flip_callback, collector); 1360} 1361 1362void Runtime::VisitRoots(RootVisitor* visitor, VisitRootFlags flags) { 1363 VisitNonConcurrentRoots(visitor); 1364 VisitConcurrentRoots(visitor, flags); 1365} 1366 1367void Runtime::VisitImageRoots(RootVisitor* visitor) { 1368 for (auto* space : GetHeap()->GetContinuousSpaces()) { 1369 if (space->IsImageSpace()) { 1370 auto* image_space = space->AsImageSpace(); 1371 const auto& image_header = image_space->GetImageHeader(); 1372 for (size_t i = 0; i < ImageHeader::kImageRootsMax; ++i) { 1373 auto* obj = image_header.GetImageRoot(static_cast<ImageHeader::ImageRoot>(i)); 1374 if (obj != nullptr) { 1375 auto* after_obj = obj; 1376 visitor->VisitRoot(&after_obj, RootInfo(kRootStickyClass)); 1377 CHECK_EQ(after_obj, obj); 1378 } 1379 } 1380 } 1381 } 1382} 1383 1384mirror::ObjectArray<mirror::ArtMethod>* Runtime::CreateDefaultImt(ClassLinker* cl) { 1385 Thread* self = Thread::Current(); 1386 StackHandleScope<1> hs(self); 1387 Handle<mirror::ObjectArray<mirror::ArtMethod>> imtable( 1388 hs.NewHandle(cl->AllocArtMethodArray(self, 64))); 1389 mirror::ArtMethod* imt_conflict_method = Runtime::Current()->GetImtConflictMethod(); 1390 for (size_t i = 0; i < static_cast<size_t>(imtable->GetLength()); i++) { 1391 imtable->Set<false>(i, imt_conflict_method); 1392 } 1393 return imtable.Get(); 1394} 1395 1396mirror::ArtMethod* Runtime::CreateImtConflictMethod() { 1397 Thread* self = Thread::Current(); 1398 Runtime* runtime = Runtime::Current(); 1399 ClassLinker* class_linker = runtime->GetClassLinker(); 1400 StackHandleScope<1> hs(self); 1401 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self))); 1402 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod()); 1403 // TODO: use a special method for imt conflict method saves. 1404 method->SetDexMethodIndex(DexFile::kDexNoIndex); 1405 // When compiling, the code pointer will get set later when the image is loaded. 1406 if (runtime->IsAotCompiler()) { 1407 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1408 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1409 } else { 1410 method->SetEntryPointFromQuickCompiledCode(GetQuickImtConflictStub()); 1411 } 1412 return method.Get(); 1413} 1414 1415void Runtime::SetImtConflictMethod(mirror::ArtMethod* method) { 1416 imt_conflict_method_ = GcRoot<mirror::ArtMethod>(method); 1417} 1418 1419mirror::ArtMethod* Runtime::CreateResolutionMethod() { 1420 Thread* self = Thread::Current(); 1421 Runtime* runtime = Runtime::Current(); 1422 ClassLinker* class_linker = runtime->GetClassLinker(); 1423 StackHandleScope<1> hs(self); 1424 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self))); 1425 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod()); 1426 // TODO: use a special method for resolution method saves 1427 method->SetDexMethodIndex(DexFile::kDexNoIndex); 1428 // When compiling, the code pointer will get set later when the image is loaded. 1429 if (runtime->IsAotCompiler()) { 1430 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1431 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1432 } else { 1433 method->SetEntryPointFromQuickCompiledCode(GetQuickResolutionStub()); 1434 } 1435 return method.Get(); 1436} 1437 1438mirror::ArtMethod* Runtime::CreateCalleeSaveMethod() { 1439 Thread* self = Thread::Current(); 1440 Runtime* runtime = Runtime::Current(); 1441 ClassLinker* class_linker = runtime->GetClassLinker(); 1442 StackHandleScope<1> hs(self); 1443 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self))); 1444 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod()); 1445 // TODO: use a special method for callee saves 1446 method->SetDexMethodIndex(DexFile::kDexNoIndex); 1447 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1448 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1449 DCHECK_NE(instruction_set_, kNone); 1450 return method.Get(); 1451} 1452 1453void Runtime::DisallowNewSystemWeaks() { 1454 monitor_list_->DisallowNewMonitors(); 1455 intern_table_->DisallowNewInterns(); 1456 java_vm_->DisallowNewWeakGlobals(); 1457} 1458 1459void Runtime::AllowNewSystemWeaks() { 1460 monitor_list_->AllowNewMonitors(); 1461 intern_table_->AllowNewInterns(); 1462 java_vm_->AllowNewWeakGlobals(); 1463} 1464 1465void Runtime::EnsureNewSystemWeaksDisallowed() { 1466 // Lock and unlock the system weak locks once to ensure that no 1467 // threads are still in the middle of adding new system weaks. 1468 monitor_list_->EnsureNewMonitorsDisallowed(); 1469 intern_table_->EnsureNewInternsDisallowed(); 1470 java_vm_->EnsureNewWeakGlobalsDisallowed(); 1471} 1472 1473void Runtime::SetInstructionSet(InstructionSet instruction_set) { 1474 instruction_set_ = instruction_set; 1475 if ((instruction_set_ == kThumb2) || (instruction_set_ == kArm)) { 1476 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1477 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1478 callee_save_method_frame_infos_[i] = arm::ArmCalleeSaveMethodFrameInfo(type); 1479 } 1480 } else if (instruction_set_ == kMips) { 1481 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1482 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1483 callee_save_method_frame_infos_[i] = mips::MipsCalleeSaveMethodFrameInfo(type); 1484 } 1485 } else if (instruction_set_ == kMips64) { 1486 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1487 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1488 callee_save_method_frame_infos_[i] = mips64::Mips64CalleeSaveMethodFrameInfo(type); 1489 } 1490 } else if (instruction_set_ == kX86) { 1491 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1492 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1493 callee_save_method_frame_infos_[i] = x86::X86CalleeSaveMethodFrameInfo(type); 1494 } 1495 } else if (instruction_set_ == kX86_64) { 1496 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1497 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1498 callee_save_method_frame_infos_[i] = x86_64::X86_64CalleeSaveMethodFrameInfo(type); 1499 } 1500 } else if (instruction_set_ == kArm64) { 1501 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1502 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1503 callee_save_method_frame_infos_[i] = arm64::Arm64CalleeSaveMethodFrameInfo(type); 1504 } 1505 } else { 1506 UNIMPLEMENTED(FATAL) << instruction_set_; 1507 } 1508} 1509 1510void Runtime::SetCalleeSaveMethod(mirror::ArtMethod* method, CalleeSaveType type) { 1511 DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType)); 1512 callee_save_methods_[type] = GcRoot<mirror::ArtMethod>(method); 1513} 1514 1515void Runtime::StartProfiler(const char* profile_output_filename) { 1516 profile_output_filename_ = profile_output_filename; 1517 profiler_started_ = 1518 BackgroundMethodSamplingProfiler::Start(profile_output_filename_, profiler_options_); 1519} 1520 1521// Transaction support. 1522void Runtime::EnterTransactionMode(Transaction* transaction) { 1523 DCHECK(IsAotCompiler()); 1524 DCHECK(transaction != nullptr); 1525 DCHECK(!IsActiveTransaction()); 1526 preinitialization_transaction_ = transaction; 1527} 1528 1529void Runtime::ExitTransactionMode() { 1530 DCHECK(IsAotCompiler()); 1531 DCHECK(IsActiveTransaction()); 1532 preinitialization_transaction_ = nullptr; 1533} 1534 1535 1536bool Runtime::IsTransactionAborted() const { 1537 if (!IsActiveTransaction()) { 1538 return false; 1539 } else { 1540 DCHECK(IsAotCompiler()); 1541 return preinitialization_transaction_->IsAborted(); 1542 } 1543} 1544 1545void Runtime::AbortTransactionAndThrowAbortError(Thread* self, const std::string& abort_message) { 1546 DCHECK(IsAotCompiler()); 1547 DCHECK(IsActiveTransaction()); 1548 // Throwing an exception may cause its class initialization. If we mark the transaction 1549 // aborted before that, we may warn with a false alarm. Throwing the exception before 1550 // marking the transaction aborted avoids that. 1551 preinitialization_transaction_->ThrowAbortError(self, false); 1552 preinitialization_transaction_->Abort(abort_message); 1553} 1554 1555void Runtime::ThrowTransactionAbortError(Thread* self) { 1556 DCHECK(IsAotCompiler()); 1557 DCHECK(IsActiveTransaction()); 1558 preinitialization_transaction_->ThrowAbortError(self, true); 1559} 1560 1561void Runtime::RecordWriteFieldBoolean(mirror::Object* obj, MemberOffset field_offset, 1562 uint8_t value, bool is_volatile) const { 1563 DCHECK(IsAotCompiler()); 1564 DCHECK(IsActiveTransaction()); 1565 preinitialization_transaction_->RecordWriteFieldBoolean(obj, field_offset, value, is_volatile); 1566} 1567 1568void Runtime::RecordWriteFieldByte(mirror::Object* obj, MemberOffset field_offset, 1569 int8_t value, bool is_volatile) const { 1570 DCHECK(IsAotCompiler()); 1571 DCHECK(IsActiveTransaction()); 1572 preinitialization_transaction_->RecordWriteFieldByte(obj, field_offset, value, is_volatile); 1573} 1574 1575void Runtime::RecordWriteFieldChar(mirror::Object* obj, MemberOffset field_offset, 1576 uint16_t value, bool is_volatile) const { 1577 DCHECK(IsAotCompiler()); 1578 DCHECK(IsActiveTransaction()); 1579 preinitialization_transaction_->RecordWriteFieldChar(obj, field_offset, value, is_volatile); 1580} 1581 1582void Runtime::RecordWriteFieldShort(mirror::Object* obj, MemberOffset field_offset, 1583 int16_t value, bool is_volatile) const { 1584 DCHECK(IsAotCompiler()); 1585 DCHECK(IsActiveTransaction()); 1586 preinitialization_transaction_->RecordWriteFieldShort(obj, field_offset, value, is_volatile); 1587} 1588 1589void Runtime::RecordWriteField32(mirror::Object* obj, MemberOffset field_offset, 1590 uint32_t value, bool is_volatile) const { 1591 DCHECK(IsAotCompiler()); 1592 DCHECK(IsActiveTransaction()); 1593 preinitialization_transaction_->RecordWriteField32(obj, field_offset, value, is_volatile); 1594} 1595 1596void Runtime::RecordWriteField64(mirror::Object* obj, MemberOffset field_offset, 1597 uint64_t value, bool is_volatile) const { 1598 DCHECK(IsAotCompiler()); 1599 DCHECK(IsActiveTransaction()); 1600 preinitialization_transaction_->RecordWriteField64(obj, field_offset, value, is_volatile); 1601} 1602 1603void Runtime::RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset, 1604 mirror::Object* value, bool is_volatile) const { 1605 DCHECK(IsAotCompiler()); 1606 DCHECK(IsActiveTransaction()); 1607 preinitialization_transaction_->RecordWriteFieldReference(obj, field_offset, value, is_volatile); 1608} 1609 1610void Runtime::RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const { 1611 DCHECK(IsAotCompiler()); 1612 DCHECK(IsActiveTransaction()); 1613 preinitialization_transaction_->RecordWriteArray(array, index, value); 1614} 1615 1616void Runtime::RecordStrongStringInsertion(mirror::String* s) const { 1617 DCHECK(IsAotCompiler()); 1618 DCHECK(IsActiveTransaction()); 1619 preinitialization_transaction_->RecordStrongStringInsertion(s); 1620} 1621 1622void Runtime::RecordWeakStringInsertion(mirror::String* s) const { 1623 DCHECK(IsAotCompiler()); 1624 DCHECK(IsActiveTransaction()); 1625 preinitialization_transaction_->RecordWeakStringInsertion(s); 1626} 1627 1628void Runtime::RecordStrongStringRemoval(mirror::String* s) const { 1629 DCHECK(IsAotCompiler()); 1630 DCHECK(IsActiveTransaction()); 1631 preinitialization_transaction_->RecordStrongStringRemoval(s); 1632} 1633 1634void Runtime::RecordWeakStringRemoval(mirror::String* s) const { 1635 DCHECK(IsAotCompiler()); 1636 DCHECK(IsActiveTransaction()); 1637 preinitialization_transaction_->RecordWeakStringRemoval(s); 1638} 1639 1640void Runtime::SetFaultMessage(const std::string& message) { 1641 MutexLock mu(Thread::Current(), fault_message_lock_); 1642 fault_message_ = message; 1643} 1644 1645void Runtime::AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* argv) 1646 const { 1647 if (GetInstrumentation()->InterpretOnly() || UseJit()) { 1648 argv->push_back("--compiler-filter=interpret-only"); 1649 } 1650 1651 // Make the dex2oat instruction set match that of the launching runtime. If we have multiple 1652 // architecture support, dex2oat may be compiled as a different instruction-set than that 1653 // currently being executed. 1654 std::string instruction_set("--instruction-set="); 1655 instruction_set += GetInstructionSetString(kRuntimeISA); 1656 argv->push_back(instruction_set); 1657 1658 std::unique_ptr<const InstructionSetFeatures> features(InstructionSetFeatures::FromCppDefines()); 1659 std::string feature_string("--instruction-set-features="); 1660 feature_string += features->GetFeatureString(); 1661 argv->push_back(feature_string); 1662 1663 if (Dbg::IsJdwpConfigured()) { 1664 argv->push_back("--debuggable"); 1665 } 1666} 1667 1668void Runtime::UpdateProfilerState(int state) { 1669 VLOG(profiler) << "Profiler state updated to " << state; 1670} 1671 1672void Runtime::CreateJit() { 1673 CHECK(!IsAotCompiler()); 1674 if (GetInstrumentation()->IsForcedInterpretOnly()) { 1675 // Don't create JIT if forced interpret only. 1676 return; 1677 } 1678 std::string error_msg; 1679 jit_.reset(jit::Jit::Create(jit_options_.get(), &error_msg)); 1680 if (jit_.get() != nullptr) { 1681 compiler_callbacks_ = jit_->GetCompilerCallbacks(); 1682 jit_->CreateInstrumentationCache(jit_options_->GetCompileThreshold()); 1683 jit_->CreateThreadPool(); 1684 } else { 1685 LOG(WARNING) << "Failed to create JIT " << error_msg; 1686 } 1687} 1688 1689bool Runtime::CanRelocate() const { 1690 return !IsAotCompiler() || compiler_callbacks_->IsRelocationPossible(); 1691} 1692 1693bool Runtime::IsCompilingBootImage() const { 1694 return IsCompiler() && compiler_callbacks_->IsBootImage(); 1695} 1696 1697} // namespace art 1698