runtime.cc revision e5fed03772144595c0904faf3d6974cc55214c8c
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/dumpable.h" 54#include "base/unix_file/fd_file.h" 55#include "class_linker.h" 56#include "debugger.h" 57#include "elf_file.h" 58#include "entrypoints/runtime_asm_entrypoints.h" 59#include "fault_handler.h" 60#include "gc/accounting/card_table-inl.h" 61#include "gc/heap.h" 62#include "gc/space/image_space.h" 63#include "gc/space/space.h" 64#include "handle_scope-inl.h" 65#include "image.h" 66#include "instrumentation.h" 67#include "intern_table.h" 68#include "interpreter/interpreter.h" 69#include "jit/jit.h" 70#include "jni_internal.h" 71#include "mirror/array.h" 72#include "mirror/art_field-inl.h" 73#include "mirror/art_method-inl.h" 74#include "mirror/class-inl.h" 75#include "mirror/class_loader.h" 76#include "mirror/stack_trace_element.h" 77#include "mirror/throwable.h" 78#include "monitor.h" 79#include "native/dalvik_system_DexFile.h" 80#include "native/dalvik_system_VMDebug.h" 81#include "native/dalvik_system_VMRuntime.h" 82#include "native/dalvik_system_VMStack.h" 83#include "native/dalvik_system_ZygoteHooks.h" 84#include "native/java_lang_Class.h" 85#include "native/java_lang_DexCache.h" 86#include "native/java_lang_Object.h" 87#include "native/java_lang_Runtime.h" 88#include "native/java_lang_String.h" 89#include "native/java_lang_System.h" 90#include "native/java_lang_Thread.h" 91#include "native/java_lang_Throwable.h" 92#include "native/java_lang_VMClassLoader.h" 93#include "native/java_lang_ref_FinalizerReference.h" 94#include "native/java_lang_ref_Reference.h" 95#include "native/java_lang_reflect_Array.h" 96#include "native/java_lang_reflect_Constructor.h" 97#include "native/java_lang_reflect_Field.h" 98#include "native/java_lang_reflect_Method.h" 99#include "native/java_lang_reflect_Proxy.h" 100#include "native/java_util_concurrent_atomic_AtomicLong.h" 101#include "native/org_apache_harmony_dalvik_ddmc_DdmServer.h" 102#include "native/org_apache_harmony_dalvik_ddmc_DdmVmInternal.h" 103#include "native/sun_misc_Unsafe.h" 104#include "native_bridge_art_interface.h" 105#include "oat_file.h" 106#include "os.h" 107#include "parsed_options.h" 108#include "profiler.h" 109#include "quick/quick_method_frame_info.h" 110#include "reflection.h" 111#include "runtime_options.h" 112#include "ScopedLocalRef.h" 113#include "scoped_thread_state_change.h" 114#include "sigchain.h" 115#include "signal_catcher.h" 116#include "signal_set.h" 117#include "thread.h" 118#include "thread_list.h" 119#include "trace.h" 120#include "transaction.h" 121#include "verifier/method_verifier.h" 122#include "well_known_classes.h" 123 124namespace art { 125 126// If a signal isn't handled properly, enable a handler that attempts to dump the Java stack. 127static constexpr bool kEnableJavaStackTraceHandler = false; 128Runtime* Runtime::instance_ = nullptr; 129 130Runtime::Runtime() 131 : instruction_set_(kNone), 132 compiler_callbacks_(nullptr), 133 is_zygote_(false), 134 must_relocate_(false), 135 is_concurrent_gc_enabled_(true), 136 is_explicit_gc_disabled_(false), 137 dex2oat_enabled_(true), 138 image_dex2oat_enabled_(true), 139 default_stack_size_(0), 140 heap_(nullptr), 141 max_spins_before_thin_lock_inflation_(Monitor::kDefaultMaxSpinsBeforeThinLockInflation), 142 monitor_list_(nullptr), 143 monitor_pool_(nullptr), 144 thread_list_(nullptr), 145 intern_table_(nullptr), 146 class_linker_(nullptr), 147 signal_catcher_(nullptr), 148 java_vm_(nullptr), 149 fault_message_lock_("Fault message lock"), 150 fault_message_(""), 151 method_verifier_lock_("Method verifiers lock"), 152 threads_being_born_(0), 153 shutdown_cond_(new ConditionVariable("Runtime shutdown", *Locks::runtime_shutdown_lock_)), 154 shutting_down_(false), 155 shutting_down_started_(false), 156 started_(false), 157 finished_starting_(false), 158 vfprintf_(nullptr), 159 exit_(nullptr), 160 abort_(nullptr), 161 stats_enabled_(false), 162 running_on_valgrind_(RUNNING_ON_VALGRIND > 0), 163 profiler_started_(false), 164 method_trace_(false), 165 method_trace_file_size_(0), 166 instrumentation_(), 167 use_compile_time_class_path_(false), 168 main_thread_group_(nullptr), 169 system_thread_group_(nullptr), 170 system_class_loader_(nullptr), 171 dump_gc_performance_on_shutdown_(false), 172 preinitialization_transaction_(nullptr), 173 verify_(false), 174 allow_dex_file_fallback_(true), 175 target_sdk_version_(0), 176 implicit_null_checks_(false), 177 implicit_so_checks_(false), 178 implicit_suspend_checks_(false), 179 is_native_bridge_loaded_(false), 180 zygote_max_failed_boots_(0) { 181 CheckAsmSupportOffsetsAndSizes(); 182} 183 184Runtime::~Runtime() { 185 if (is_native_bridge_loaded_) { 186 UnloadNativeBridge(); 187 } 188 if (dump_gc_performance_on_shutdown_) { 189 // This can't be called from the Heap destructor below because it 190 // could call RosAlloc::InspectAll() which needs the thread_list 191 // to be still alive. 192 heap_->DumpGcPerformanceInfo(LOG(INFO)); 193 } 194 195 Thread* self = Thread::Current(); 196 const bool attach_shutdown_thread = self == nullptr; 197 if (attach_shutdown_thread) { 198 CHECK(AttachCurrentThread("Shutdown thread", false, nullptr, false)); 199 self = Thread::Current(); 200 } else { 201 LOG(WARNING) << "Current thread not detached in Runtime shutdown"; 202 } 203 204 { 205 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 206 shutting_down_started_ = true; 207 while (threads_being_born_ > 0) { 208 shutdown_cond_->Wait(self); 209 } 210 shutting_down_ = true; 211 } 212 // Shutdown and wait for the daemons. 213 CHECK(self != nullptr); 214 if (IsFinishedStarting()) { 215 self->ClearException(); 216 self->GetJniEnv()->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 217 WellKnownClasses::java_lang_Daemons_stop); 218 } 219 if (attach_shutdown_thread) { 220 DetachCurrentThread(); 221 self = nullptr; 222 } 223 224 // Shut down background profiler before the runtime exits. 225 if (profiler_started_) { 226 BackgroundMethodSamplingProfiler::Shutdown(); 227 } 228 229 Trace::Shutdown(); 230 231 // Make sure to let the GC complete if it is running. 232 heap_->WaitForGcToComplete(gc::kGcCauseBackground, self); 233 heap_->DeleteThreadPool(); 234 if (jit_.get() != nullptr) { 235 VLOG(jit) << "Deleting jit thread pool"; 236 // Delete thread pool before the thread list since we don't want to wait forever on the 237 // JIT compiler threads. 238 jit_->DeleteThreadPool(); 239 } 240 241 // Make sure our internal threads are dead before we start tearing down things they're using. 242 Dbg::StopJdwp(); 243 delete signal_catcher_; 244 245 // Make sure all other non-daemon threads have terminated, and all daemon threads are suspended. 246 delete thread_list_; 247 248 // Delete the JIT after thread list to ensure that there is no remaining threads which could be 249 // accessing the instrumentation when we delete it. 250 if (jit_.get() != nullptr) { 251 VLOG(jit) << "Deleting jit"; 252 jit_.reset(nullptr); 253 } 254 arena_pool_.reset(); 255 256 // Shutdown the fault manager if it was initialized. 257 fault_manager.Shutdown(); 258 259 delete monitor_list_; 260 delete monitor_pool_; 261 delete class_linker_; 262 delete heap_; 263 delete intern_table_; 264 delete java_vm_; 265 Thread::Shutdown(); 266 QuasiAtomic::Shutdown(); 267 verifier::MethodVerifier::Shutdown(); 268 MemMap::Shutdown(); 269 // TODO: acquire a static mutex on Runtime to avoid racing. 270 CHECK(instance_ == nullptr || instance_ == this); 271 instance_ = nullptr; 272} 273 274struct AbortState { 275 void Dump(std::ostream& os) const { 276 if (gAborting > 1) { 277 os << "Runtime aborting --- recursively, so no thread-specific detail!\n"; 278 return; 279 } 280 gAborting++; 281 os << "Runtime aborting...\n"; 282 if (Runtime::Current() == NULL) { 283 os << "(Runtime does not yet exist!)\n"; 284 return; 285 } 286 Thread* self = Thread::Current(); 287 if (self == nullptr) { 288 os << "(Aborting thread was not attached to runtime!)\n"; 289 DumpKernelStack(os, GetTid(), " kernel: ", false); 290 DumpNativeStack(os, GetTid(), " native: ", nullptr); 291 } else { 292 os << "Aborting thread:\n"; 293 if (Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)) { 294 DumpThread(os, self); 295 } else { 296 if (Locks::mutator_lock_->SharedTryLock(self)) { 297 DumpThread(os, self); 298 Locks::mutator_lock_->SharedUnlock(self); 299 } 300 } 301 } 302 DumpAllThreads(os, self); 303 } 304 305 // No thread-safety analysis as we do explicitly test for holding the mutator lock. 306 void DumpThread(std::ostream& os, Thread* self) const NO_THREAD_SAFETY_ANALYSIS { 307 DCHECK(Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)); 308 self->Dump(os); 309 if (self->IsExceptionPending()) { 310 mirror::Throwable* exception = self->GetException(); 311 os << "Pending exception " << exception->Dump(); 312 } 313 } 314 315 void DumpAllThreads(std::ostream& os, Thread* self) const { 316 Runtime* runtime = Runtime::Current(); 317 if (runtime != nullptr) { 318 ThreadList* thread_list = runtime->GetThreadList(); 319 if (thread_list != nullptr) { 320 bool tll_already_held = Locks::thread_list_lock_->IsExclusiveHeld(self); 321 bool ml_already_held = Locks::mutator_lock_->IsSharedHeld(self); 322 if (!tll_already_held || !ml_already_held) { 323 os << "Dumping all threads without appropriate locks held:" 324 << (!tll_already_held ? " thread list lock" : "") 325 << (!ml_already_held ? " mutator lock" : "") 326 << "\n"; 327 } 328 os << "All threads:\n"; 329 thread_list->Dump(os); 330 } 331 } 332 } 333}; 334 335void Runtime::Abort() { 336 gAborting++; // set before taking any locks 337 338 // Ensure that we don't have multiple threads trying to abort at once, 339 // which would result in significantly worse diagnostics. 340 MutexLock mu(Thread::Current(), *Locks::abort_lock_); 341 342 // Get any pending output out of the way. 343 fflush(NULL); 344 345 // Many people have difficulty distinguish aborts from crashes, 346 // so be explicit. 347 AbortState state; 348 LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state); 349 350 // Call the abort hook if we have one. 351 if (Runtime::Current() != NULL && Runtime::Current()->abort_ != NULL) { 352 LOG(INTERNAL_FATAL) << "Calling abort hook..."; 353 Runtime::Current()->abort_(); 354 // notreached 355 LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!"; 356 } 357 358#if defined(__GLIBC__) 359 // TODO: we ought to be able to use pthread_kill(3) here (or abort(3), 360 // which POSIX defines in terms of raise(3), which POSIX defines in terms 361 // of pthread_kill(3)). On Linux, though, libcorkscrew can't unwind through 362 // libpthread, which means the stacks we dump would be useless. Calling 363 // tgkill(2) directly avoids that. 364 syscall(__NR_tgkill, getpid(), GetTid(), SIGABRT); 365 // TODO: LLVM installs it's own SIGABRT handler so exit to be safe... Can we disable that in LLVM? 366 // If not, we could use sigaction(3) before calling tgkill(2) and lose this call to exit(3). 367 exit(1); 368#else 369 abort(); 370#endif 371 // notreached 372} 373 374void Runtime::PreZygoteFork() { 375 heap_->PreZygoteFork(); 376} 377 378void Runtime::CallExitHook(jint status) { 379 if (exit_ != NULL) { 380 ScopedThreadStateChange tsc(Thread::Current(), kNative); 381 exit_(status); 382 LOG(WARNING) << "Exit hook returned instead of exiting!"; 383 } 384} 385 386void Runtime::SweepSystemWeaks(IsMarkedCallback* visitor, void* arg) { 387 GetInternTable()->SweepInternTableWeaks(visitor, arg); 388 GetMonitorList()->SweepMonitorList(visitor, arg); 389 GetJavaVM()->SweepJniWeakGlobals(visitor, arg); 390} 391 392bool Runtime::Create(const RuntimeOptions& options, bool ignore_unrecognized) { 393 // TODO: acquire a static mutex on Runtime to avoid racing. 394 if (Runtime::instance_ != NULL) { 395 return false; 396 } 397 InitLogging(NULL); // Calls Locks::Init() as a side effect. 398 instance_ = new Runtime; 399 if (!instance_->Init(options, ignore_unrecognized)) { 400 // TODO: Currently deleting the instance will abort the runtime on destruction. Now This will 401 // leak memory, instead. Fix the destructor. b/19100793. 402 // delete instance_; 403 instance_ = NULL; 404 return false; 405 } 406 return true; 407} 408 409static jobject CreateSystemClassLoader() { 410 if (Runtime::Current()->UseCompileTimeClassPath()) { 411 return NULL; 412 } 413 414 ScopedObjectAccess soa(Thread::Current()); 415 ClassLinker* cl = Runtime::Current()->GetClassLinker(); 416 417 StackHandleScope<2> hs(soa.Self()); 418 Handle<mirror::Class> class_loader_class( 419 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader))); 420 CHECK(cl->EnsureInitialized(soa.Self(), class_loader_class, true, true)); 421 422 mirror::ArtMethod* getSystemClassLoader = 423 class_loader_class->FindDirectMethod("getSystemClassLoader", "()Ljava/lang/ClassLoader;"); 424 CHECK(getSystemClassLoader != NULL); 425 426 JValue result = InvokeWithJValues(soa, nullptr, soa.EncodeMethod(getSystemClassLoader), nullptr); 427 JNIEnv* env = soa.Self()->GetJniEnv(); 428 ScopedLocalRef<jobject> system_class_loader(env, 429 soa.AddLocalReference<jobject>(result.GetL())); 430 CHECK(system_class_loader.get() != nullptr); 431 432 soa.Self()->SetClassLoaderOverride(system_class_loader.get()); 433 434 Handle<mirror::Class> thread_class( 435 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread))); 436 CHECK(cl->EnsureInitialized(soa.Self(), thread_class, true, true)); 437 438 mirror::ArtField* contextClassLoader = 439 thread_class->FindDeclaredInstanceField("contextClassLoader", "Ljava/lang/ClassLoader;"); 440 CHECK(contextClassLoader != NULL); 441 442 // We can't run in a transaction yet. 443 contextClassLoader->SetObject<false>(soa.Self()->GetPeer(), 444 soa.Decode<mirror::ClassLoader*>(system_class_loader.get())); 445 446 return env->NewGlobalRef(system_class_loader.get()); 447} 448 449std::string Runtime::GetPatchoatExecutable() const { 450 if (!patchoat_executable_.empty()) { 451 return patchoat_executable_; 452 } 453 std::string patchoat_executable(GetAndroidRoot()); 454 patchoat_executable += (kIsDebugBuild ? "/bin/patchoatd" : "/bin/patchoat"); 455 return patchoat_executable; 456} 457 458std::string Runtime::GetCompilerExecutable() const { 459 if (!compiler_executable_.empty()) { 460 return compiler_executable_; 461 } 462 std::string compiler_executable(GetAndroidRoot()); 463 compiler_executable += (kIsDebugBuild ? "/bin/dex2oatd" : "/bin/dex2oat"); 464 return compiler_executable; 465} 466 467bool Runtime::Start() { 468 VLOG(startup) << "Runtime::Start entering"; 469 470 // Restore main thread state to kNative as expected by native code. 471 Thread* self = Thread::Current(); 472 473 self->TransitionFromRunnableToSuspended(kNative); 474 475 started_ = true; 476 477 // Use !IsAotCompiler so that we get test coverage, tests are never the zygote. 478 if (!IsAotCompiler()) { 479 ScopedObjectAccess soa(self); 480 gc::space::ImageSpace* image_space = heap_->GetImageSpace(); 481 if (image_space != nullptr) { 482 GetInternTable()->AddImageStringsToTable(image_space); 483 GetClassLinker()->MoveImageClassesToClassTable(); 484 } 485 } 486 487 // If we are the zygote then we need to wait until after forking to create the code cache due to 488 // SELinux restrictions on r/w/x memory regions. 489 if (!IsZygote() && jit_.get() != nullptr) { 490 jit_->CreateInstrumentationCache(jit_options_->GetCompileThreshold()); 491 jit_->CreateThreadPool(); 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(); 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_options_.get() != nullptr && jit_.get() == nullptr) { 616 // Create the JIT if the flag is set and we haven't already create it (happens for run-tests). 617 CreateJit(); 618 jit_->CreateInstrumentationCache(jit_options_->GetCompileThreshold()); 619 jit_->CreateThreadPool(); 620 } 621 622 StartSignalCatcher(); 623 624 // Start the JDWP thread. If the command-line debugger flags specified "suspend=y", 625 // this will pause the runtime, so we probably want this to come last. 626 Dbg::StartJdwp(); 627} 628 629void Runtime::StartSignalCatcher() { 630 if (!is_zygote_) { 631 signal_catcher_ = new SignalCatcher(stack_trace_file_); 632 } 633} 634 635bool Runtime::IsShuttingDown(Thread* self) { 636 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 637 return IsShuttingDownLocked(); 638} 639 640void Runtime::StartDaemonThreads() { 641 VLOG(startup) << "Runtime::StartDaemonThreads entering"; 642 643 Thread* self = Thread::Current(); 644 645 // Must be in the kNative state for calling native methods. 646 CHECK_EQ(self->GetState(), kNative); 647 648 JNIEnv* env = self->GetJniEnv(); 649 env->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 650 WellKnownClasses::java_lang_Daemons_start); 651 if (env->ExceptionCheck()) { 652 env->ExceptionDescribe(); 653 LOG(FATAL) << "Error starting java.lang.Daemons"; 654 } 655 656 VLOG(startup) << "Runtime::StartDaemonThreads exiting"; 657} 658 659static bool OpenDexFilesFromImage(const std::string& image_location, 660 std::vector<std::unique_ptr<const DexFile>>* dex_files, 661 size_t* failures) { 662 DCHECK(dex_files != nullptr) << "OpenDexFilesFromImage: out-param is NULL"; 663 std::string system_filename; 664 bool has_system = false; 665 std::string cache_filename_unused; 666 bool dalvik_cache_exists_unused; 667 bool has_cache_unused; 668 bool is_global_cache_unused; 669 bool found_image = gc::space::ImageSpace::FindImageFilename(image_location.c_str(), 670 kRuntimeISA, 671 &system_filename, 672 &has_system, 673 &cache_filename_unused, 674 &dalvik_cache_exists_unused, 675 &has_cache_unused, 676 &is_global_cache_unused); 677 *failures = 0; 678 if (!found_image || !has_system) { 679 return false; 680 } 681 std::string error_msg; 682 // We are falling back to non-executable use of the oat file because patching failed, presumably 683 // due to lack of space. 684 std::string oat_filename = ImageHeader::GetOatLocationFromImageLocation(system_filename.c_str()); 685 std::string oat_location = ImageHeader::GetOatLocationFromImageLocation(image_location.c_str()); 686 std::unique_ptr<File> file(OS::OpenFileForReading(oat_filename.c_str())); 687 if (file.get() == nullptr) { 688 return false; 689 } 690 std::unique_ptr<ElfFile> elf_file(ElfFile::Open(file.release(), false, false, &error_msg)); 691 if (elf_file.get() == nullptr) { 692 return false; 693 } 694 std::unique_ptr<OatFile> oat_file(OatFile::OpenWithElfFile(elf_file.release(), oat_location, 695 nullptr, &error_msg)); 696 if (oat_file.get() == nullptr) { 697 LOG(INFO) << "Unable to use '" << oat_filename << "' because " << error_msg; 698 return false; 699 } 700 701 for (const OatFile::OatDexFile* oat_dex_file : oat_file->GetOatDexFiles()) { 702 if (oat_dex_file == nullptr) { 703 *failures += 1; 704 continue; 705 } 706 std::unique_ptr<const DexFile> dex_file = oat_dex_file->OpenDexFile(&error_msg); 707 if (dex_file.get() == nullptr) { 708 *failures += 1; 709 } else { 710 dex_files->push_back(std::move(dex_file)); 711 } 712 } 713 Runtime::Current()->GetClassLinker()->RegisterOatFile(oat_file.release()); 714 return true; 715} 716 717 718static size_t OpenDexFiles(const std::vector<std::string>& dex_filenames, 719 const std::vector<std::string>& dex_locations, 720 const std::string& image_location, 721 std::vector<std::unique_ptr<const DexFile>>* dex_files) { 722 DCHECK(dex_files != nullptr) << "OpenDexFiles: out-param is NULL"; 723 size_t failure_count = 0; 724 if (!image_location.empty() && OpenDexFilesFromImage(image_location, dex_files, &failure_count)) { 725 return failure_count; 726 } 727 failure_count = 0; 728 for (size_t i = 0; i < dex_filenames.size(); i++) { 729 const char* dex_filename = dex_filenames[i].c_str(); 730 const char* dex_location = dex_locations[i].c_str(); 731 std::string error_msg; 732 if (!OS::FileExists(dex_filename)) { 733 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 734 continue; 735 } 736 if (!DexFile::Open(dex_filename, dex_location, &error_msg, dex_files)) { 737 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 738 ++failure_count; 739 } 740 } 741 return failure_count; 742} 743 744bool Runtime::Init(const RuntimeOptions& raw_options, bool ignore_unrecognized) { 745 CHECK_EQ(sysconf(_SC_PAGE_SIZE), kPageSize); 746 747 MemMap::Init(); 748 749 using Opt = RuntimeArgumentMap; 750 RuntimeArgumentMap runtime_options; 751 std::unique_ptr<ParsedOptions> parsed_options( 752 ParsedOptions::Create(raw_options, ignore_unrecognized, &runtime_options)); 753 if (parsed_options.get() == nullptr) { 754 LOG(ERROR) << "Failed to parse options"; 755 return false; 756 } 757 VLOG(startup) << "Runtime::Init -verbose:startup enabled"; 758 759 QuasiAtomic::Startup(); 760 761 Monitor::Init(runtime_options.GetOrDefault(Opt::LockProfThreshold), 762 runtime_options.GetOrDefault(Opt::HookIsSensitiveThread)); 763 764 boot_class_path_string_ = runtime_options.ReleaseOrDefault(Opt::BootClassPath); 765 class_path_string_ = runtime_options.ReleaseOrDefault(Opt::ClassPath); 766 properties_ = runtime_options.ReleaseOrDefault(Opt::PropertiesList); 767 768 compiler_callbacks_ = runtime_options.GetOrDefault(Opt::CompilerCallbacksPtr); 769 patchoat_executable_ = runtime_options.ReleaseOrDefault(Opt::PatchOat); 770 must_relocate_ = runtime_options.GetOrDefault(Opt::Relocate); 771 is_zygote_ = runtime_options.Exists(Opt::Zygote); 772 is_explicit_gc_disabled_ = runtime_options.Exists(Opt::DisableExplicitGC); 773 dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::Dex2Oat); 774 image_dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::ImageDex2Oat); 775 776 vfprintf_ = runtime_options.GetOrDefault(Opt::HookVfprintf); 777 exit_ = runtime_options.GetOrDefault(Opt::HookExit); 778 abort_ = runtime_options.GetOrDefault(Opt::HookAbort); 779 780 default_stack_size_ = runtime_options.GetOrDefault(Opt::StackSize); 781 stack_trace_file_ = runtime_options.ReleaseOrDefault(Opt::StackTraceFile); 782 783 compiler_executable_ = runtime_options.ReleaseOrDefault(Opt::Compiler); 784 compiler_options_ = runtime_options.ReleaseOrDefault(Opt::CompilerOptions); 785 image_compiler_options_ = runtime_options.ReleaseOrDefault(Opt::ImageCompilerOptions); 786 image_location_ = runtime_options.GetOrDefault(Opt::Image); 787 788 max_spins_before_thin_lock_inflation_ = 789 runtime_options.GetOrDefault(Opt::MaxSpinsBeforeThinLockInflation); 790 791 monitor_list_ = new MonitorList; 792 monitor_pool_ = MonitorPool::Create(); 793 thread_list_ = new ThreadList; 794 intern_table_ = new InternTable; 795 796 verify_ = runtime_options.GetOrDefault(Opt::Verify); 797 allow_dex_file_fallback_ = !runtime_options.Exists(Opt::NoDexFileFallback); 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 if (!IsAotCompiler()) { 848 // If we are already the compiler at this point, we must be dex2oat. Don't create the jit in 849 // this case. 850 // If runtime_options doesn't have UseJIT set to true then CreateFromRuntimeArguments returns 851 // nullptr and we don't create the jit. 852 jit_options_.reset(jit::JitOptions::CreateFromRuntimeArguments(runtime_options)); 853 } 854 if (!IsZygote() && jit_options_.get() != nullptr) { 855 CreateJit(); 856 } 857 858 // Use MemMap arena pool for jit, malloc otherwise. Malloc arenas are faster to allocate but 859 // can't be trimmed as easily. 860 const bool use_malloc = jit_options_.get() == nullptr; 861 arena_pool_.reset(new ArenaPool(use_malloc)); 862 863 BlockSignals(); 864 InitPlatformSignalHandlers(); 865 866 // Change the implicit checks flags based on runtime architecture. 867 switch (kRuntimeISA) { 868 case kArm: 869 case kThumb2: 870 case kX86: 871 case kArm64: 872 case kX86_64: 873 implicit_null_checks_ = true; 874 // Installing stack protection does not play well with valgrind. 875 implicit_so_checks_ = (RUNNING_ON_VALGRIND == 0); 876 break; 877 default: 878 // Keep the defaults. 879 break; 880 } 881 882 // Always initialize the signal chain so that any calls to sigaction get 883 // correctly routed to the next in the chain regardless of whether we 884 // have claimed the signal or not. 885 InitializeSignalChain(); 886 887 if (implicit_null_checks_ || implicit_so_checks_ || implicit_suspend_checks_) { 888 fault_manager.Init(); 889 890 // These need to be in a specific order. The null point check handler must be 891 // after the suspend check and stack overflow check handlers. 892 // 893 // Note: the instances attach themselves to the fault manager and are handled by it. The manager 894 // will delete the instance on Shutdown(). 895 if (implicit_suspend_checks_) { 896 new SuspensionHandler(&fault_manager); 897 } 898 899 if (implicit_so_checks_) { 900 new StackOverflowHandler(&fault_manager); 901 } 902 903 if (implicit_null_checks_) { 904 new NullPointerHandler(&fault_manager); 905 } 906 907 if (kEnableJavaStackTraceHandler) { 908 new JavaStackTraceHandler(&fault_manager); 909 } 910 } 911 912 java_vm_ = new JavaVMExt(this, runtime_options); 913 914 Thread::Startup(); 915 916 // ClassLinker needs an attached thread, but we can't fully attach a thread without creating 917 // objects. We can't supply a thread group yet; it will be fixed later. Since we are the main 918 // thread, we do not get a java peer. 919 Thread* self = Thread::Attach("main", false, nullptr, false); 920 CHECK_EQ(self->GetThreadId(), ThreadList::kMainThreadId); 921 CHECK(self != nullptr); 922 923 // Set us to runnable so tools using a runtime can allocate and GC by default 924 self->TransitionFromSuspendedToRunnable(); 925 926 // Now we're attached, we can take the heap locks and validate the heap. 927 GetHeap()->EnableObjectValidation(); 928 929 CHECK_GE(GetHeap()->GetContinuousSpaces().size(), 1U); 930 class_linker_ = new ClassLinker(intern_table_); 931 if (GetHeap()->HasImageSpace()) { 932 class_linker_->InitFromImage(); 933 if (kIsDebugBuild) { 934 GetHeap()->GetImageSpace()->VerifyImageAllocations(); 935 } 936 if (boot_class_path_string_.empty()) { 937 // The bootclasspath is not explicitly specified: construct it from the loaded dex files. 938 const std::vector<const DexFile*>& boot_class_path = GetClassLinker()->GetBootClassPath(); 939 std::vector<std::string> dex_locations; 940 dex_locations.reserve(boot_class_path.size()); 941 for (const DexFile* dex_file : boot_class_path) { 942 dex_locations.push_back(dex_file->GetLocation()); 943 } 944 boot_class_path_string_ = Join(dex_locations, ':'); 945 } 946 } else { 947 std::vector<std::string> dex_filenames; 948 Split(boot_class_path_string_, ':', &dex_filenames); 949 950 std::vector<std::string> dex_locations; 951 if (!runtime_options.Exists(Opt::BootClassPathLocations)) { 952 dex_locations = dex_filenames; 953 } else { 954 dex_locations = runtime_options.GetOrDefault(Opt::BootClassPathLocations); 955 CHECK_EQ(dex_filenames.size(), dex_locations.size()); 956 } 957 958 std::vector<std::unique_ptr<const DexFile>> boot_class_path; 959 OpenDexFiles(dex_filenames, 960 dex_locations, 961 runtime_options.GetOrDefault(Opt::Image), 962 &boot_class_path); 963 instruction_set_ = runtime_options.GetOrDefault(Opt::ImageInstructionSet); 964 class_linker_->InitWithoutImage(std::move(boot_class_path)); 965 966 // TODO: Should we move the following to InitWithoutImage? 967 SetInstructionSet(instruction_set_); 968 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 969 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 970 if (!HasCalleeSaveMethod(type)) { 971 SetCalleeSaveMethod(CreateCalleeSaveMethod(), type); 972 } 973 } 974 } 975 976 CHECK(class_linker_ != nullptr); 977 978 // Initialize the special sentinel_ value early. 979 sentinel_ = GcRoot<mirror::Object>(class_linker_->AllocObject(self)); 980 CHECK(sentinel_.Read() != nullptr); 981 982 verifier::MethodVerifier::Init(); 983 984 method_trace_ = runtime_options.Exists(Opt::MethodTrace); 985 method_trace_file_ = runtime_options.ReleaseOrDefault(Opt::MethodTraceFile); 986 method_trace_file_size_ = runtime_options.ReleaseOrDefault(Opt::MethodTraceFileSize); 987 988 { 989 auto&& profiler_options = runtime_options.ReleaseOrDefault(Opt::ProfilerOpts); 990 profile_output_filename_ = profiler_options.output_file_name_; 991 992 // TODO: Don't do this, just change ProfilerOptions to include the output file name? 993 ProfilerOptions other_options( 994 profiler_options.enabled_, 995 profiler_options.period_s_, 996 profiler_options.duration_s_, 997 profiler_options.interval_us_, 998 profiler_options.backoff_coefficient_, 999 profiler_options.start_immediately_, 1000 profiler_options.top_k_threshold_, 1001 profiler_options.top_k_change_threshold_, 1002 profiler_options.profile_type_, 1003 profiler_options.max_stack_depth_); 1004 1005 profiler_options_ = other_options; 1006 } 1007 1008 // TODO: move this to just be an Trace::Start argument 1009 Trace::SetDefaultClockSource(runtime_options.GetOrDefault(Opt::ProfileClock)); 1010 1011 if (method_trace_) { 1012 ScopedThreadStateChange tsc(self, kWaitingForMethodTracingStart); 1013 Trace::Start(method_trace_file_.c_str(), 1014 -1, 1015 static_cast<int>(method_trace_file_size_), 1016 0, 1017 false, 1018 false, 1019 0); 1020 } 1021 1022 // Pre-allocate an OutOfMemoryError for the double-OOME case. 1023 self->ThrowNewException("Ljava/lang/OutOfMemoryError;", 1024 "OutOfMemoryError thrown while trying to throw OutOfMemoryError; " 1025 "no stack trace available"); 1026 pre_allocated_OutOfMemoryError_ = GcRoot<mirror::Throwable>(self->GetException()); 1027 self->ClearException(); 1028 1029 // Pre-allocate a NoClassDefFoundError for the common case of failing to find a system class 1030 // ahead of checking the application's class loader. 1031 self->ThrowNewException("Ljava/lang/NoClassDefFoundError;", 1032 "Class not found using the boot class loader; no stack trace available"); 1033 pre_allocated_NoClassDefFoundError_ = GcRoot<mirror::Throwable>(self->GetException()); 1034 self->ClearException(); 1035 1036 // Look for a native bridge. 1037 // 1038 // The intended flow here is, in the case of a running system: 1039 // 1040 // Runtime::Init() (zygote): 1041 // LoadNativeBridge -> dlopen from cmd line parameter. 1042 // | 1043 // V 1044 // Runtime::Start() (zygote): 1045 // No-op wrt native bridge. 1046 // | 1047 // | start app 1048 // V 1049 // DidForkFromZygote(action) 1050 // action = kUnload -> dlclose native bridge. 1051 // action = kInitialize -> initialize library 1052 // 1053 // 1054 // The intended flow here is, in the case of a simple dalvikvm call: 1055 // 1056 // Runtime::Init(): 1057 // LoadNativeBridge -> dlopen from cmd line parameter. 1058 // | 1059 // V 1060 // Runtime::Start(): 1061 // DidForkFromZygote(kInitialize) -> try to initialize any native bridge given. 1062 // No-op wrt native bridge. 1063 { 1064 std::string native_bridge_file_name = runtime_options.ReleaseOrDefault(Opt::NativeBridge); 1065 is_native_bridge_loaded_ = LoadNativeBridge(native_bridge_file_name); 1066 } 1067 1068 VLOG(startup) << "Runtime::Init exiting"; 1069 return true; 1070} 1071 1072void Runtime::InitNativeMethods() { 1073 VLOG(startup) << "Runtime::InitNativeMethods entering"; 1074 Thread* self = Thread::Current(); 1075 JNIEnv* env = self->GetJniEnv(); 1076 1077 // Must be in the kNative state for calling native methods (JNI_OnLoad code). 1078 CHECK_EQ(self->GetState(), kNative); 1079 1080 // First set up JniConstants, which is used by both the runtime's built-in native 1081 // methods and libcore. 1082 JniConstants::init(env); 1083 WellKnownClasses::Init(env); 1084 1085 // Then set up the native methods provided by the runtime itself. 1086 RegisterRuntimeNativeMethods(env); 1087 1088 // Then set up libcore, which is just a regular JNI library with a regular JNI_OnLoad. 1089 // Most JNI libraries can just use System.loadLibrary, but libcore can't because it's 1090 // the library that implements System.loadLibrary! 1091 { 1092 std::string reason; 1093 if (!java_vm_->LoadNativeLibrary(env, "libjavacore.so", nullptr, &reason)) { 1094 LOG(FATAL) << "LoadNativeLibrary failed for \"libjavacore.so\": " << reason; 1095 } 1096 } 1097 1098 // Initialize well known classes that may invoke runtime native methods. 1099 WellKnownClasses::LateInit(env); 1100 1101 VLOG(startup) << "Runtime::InitNativeMethods exiting"; 1102} 1103 1104void Runtime::InitThreadGroups(Thread* self) { 1105 JNIEnvExt* env = self->GetJniEnv(); 1106 ScopedJniEnvLocalRefState env_state(env); 1107 main_thread_group_ = 1108 env->NewGlobalRef(env->GetStaticObjectField( 1109 WellKnownClasses::java_lang_ThreadGroup, 1110 WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup)); 1111 CHECK(main_thread_group_ != NULL || IsAotCompiler()); 1112 system_thread_group_ = 1113 env->NewGlobalRef(env->GetStaticObjectField( 1114 WellKnownClasses::java_lang_ThreadGroup, 1115 WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup)); 1116 CHECK(system_thread_group_ != NULL || IsAotCompiler()); 1117} 1118 1119jobject Runtime::GetMainThreadGroup() const { 1120 CHECK(main_thread_group_ != NULL || IsAotCompiler()); 1121 return main_thread_group_; 1122} 1123 1124jobject Runtime::GetSystemThreadGroup() const { 1125 CHECK(system_thread_group_ != NULL || IsAotCompiler()); 1126 return system_thread_group_; 1127} 1128 1129jobject Runtime::GetSystemClassLoader() const { 1130 CHECK(system_class_loader_ != NULL || IsAotCompiler()); 1131 return system_class_loader_; 1132} 1133 1134void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) { 1135 register_dalvik_system_DexFile(env); 1136 register_dalvik_system_VMDebug(env); 1137 register_dalvik_system_VMRuntime(env); 1138 register_dalvik_system_VMStack(env); 1139 register_dalvik_system_ZygoteHooks(env); 1140 register_java_lang_Class(env); 1141 register_java_lang_DexCache(env); 1142 register_java_lang_Object(env); 1143 register_java_lang_ref_FinalizerReference(env); 1144 register_java_lang_reflect_Array(env); 1145 register_java_lang_reflect_Constructor(env); 1146 register_java_lang_reflect_Field(env); 1147 register_java_lang_reflect_Method(env); 1148 register_java_lang_reflect_Proxy(env); 1149 register_java_lang_ref_Reference(env); 1150 register_java_lang_Runtime(env); 1151 register_java_lang_String(env); 1152 register_java_lang_System(env); 1153 register_java_lang_Thread(env); 1154 register_java_lang_Throwable(env); 1155 register_java_lang_VMClassLoader(env); 1156 register_java_util_concurrent_atomic_AtomicLong(env); 1157 register_org_apache_harmony_dalvik_ddmc_DdmServer(env); 1158 register_org_apache_harmony_dalvik_ddmc_DdmVmInternal(env); 1159 register_sun_misc_Unsafe(env); 1160} 1161 1162void Runtime::DumpForSigQuit(std::ostream& os) { 1163 GetClassLinker()->DumpForSigQuit(os); 1164 GetInternTable()->DumpForSigQuit(os); 1165 GetJavaVM()->DumpForSigQuit(os); 1166 GetHeap()->DumpForSigQuit(os); 1167 TrackedAllocators::Dump(os); 1168 os << "\n"; 1169 1170 thread_list_->DumpForSigQuit(os); 1171 BaseMutex::DumpAll(os); 1172} 1173 1174void Runtime::DumpLockHolders(std::ostream& os) { 1175 uint64_t mutator_lock_owner = Locks::mutator_lock_->GetExclusiveOwnerTid(); 1176 pid_t thread_list_lock_owner = GetThreadList()->GetLockOwner(); 1177 pid_t classes_lock_owner = GetClassLinker()->GetClassesLockOwner(); 1178 pid_t dex_lock_owner = GetClassLinker()->GetDexLockOwner(); 1179 if ((thread_list_lock_owner | classes_lock_owner | dex_lock_owner) != 0) { 1180 os << "Mutator lock exclusive owner tid: " << mutator_lock_owner << "\n" 1181 << "ThreadList lock owner tid: " << thread_list_lock_owner << "\n" 1182 << "ClassLinker classes lock owner tid: " << classes_lock_owner << "\n" 1183 << "ClassLinker dex lock owner tid: " << dex_lock_owner << "\n"; 1184 } 1185} 1186 1187void Runtime::SetStatsEnabled(bool new_state) { 1188 Thread* self = Thread::Current(); 1189 MutexLock mu(self, *Locks::instrument_entrypoints_lock_); 1190 if (new_state == true) { 1191 GetStats()->Clear(~0); 1192 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1193 self->GetStats()->Clear(~0); 1194 if (stats_enabled_ != new_state) { 1195 GetInstrumentation()->InstrumentQuickAllocEntryPointsLocked(); 1196 } 1197 } else if (stats_enabled_ != new_state) { 1198 GetInstrumentation()->UninstrumentQuickAllocEntryPointsLocked(); 1199 } 1200 stats_enabled_ = new_state; 1201} 1202 1203void Runtime::ResetStats(int kinds) { 1204 GetStats()->Clear(kinds & 0xffff); 1205 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1206 Thread::Current()->GetStats()->Clear(kinds >> 16); 1207} 1208 1209int32_t Runtime::GetStat(int kind) { 1210 RuntimeStats* stats; 1211 if (kind < (1<<16)) { 1212 stats = GetStats(); 1213 } else { 1214 stats = Thread::Current()->GetStats(); 1215 kind >>= 16; 1216 } 1217 switch (kind) { 1218 case KIND_ALLOCATED_OBJECTS: 1219 return stats->allocated_objects; 1220 case KIND_ALLOCATED_BYTES: 1221 return stats->allocated_bytes; 1222 case KIND_FREED_OBJECTS: 1223 return stats->freed_objects; 1224 case KIND_FREED_BYTES: 1225 return stats->freed_bytes; 1226 case KIND_GC_INVOCATIONS: 1227 return stats->gc_for_alloc_count; 1228 case KIND_CLASS_INIT_COUNT: 1229 return stats->class_init_count; 1230 case KIND_CLASS_INIT_TIME: 1231 // Convert ns to us, reduce to 32 bits. 1232 return static_cast<int>(stats->class_init_time_ns / 1000); 1233 case KIND_EXT_ALLOCATED_OBJECTS: 1234 case KIND_EXT_ALLOCATED_BYTES: 1235 case KIND_EXT_FREED_OBJECTS: 1236 case KIND_EXT_FREED_BYTES: 1237 return 0; // backward compatibility 1238 default: 1239 LOG(FATAL) << "Unknown statistic " << kind; 1240 return -1; // unreachable 1241 } 1242} 1243 1244void Runtime::BlockSignals() { 1245 SignalSet signals; 1246 signals.Add(SIGPIPE); 1247 // SIGQUIT is used to dump the runtime's state (including stack traces). 1248 signals.Add(SIGQUIT); 1249 // SIGUSR1 is used to initiate a GC. 1250 signals.Add(SIGUSR1); 1251 signals.Block(); 1252} 1253 1254bool Runtime::AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group, 1255 bool create_peer) { 1256 return Thread::Attach(thread_name, as_daemon, thread_group, create_peer) != NULL; 1257} 1258 1259void Runtime::DetachCurrentThread() { 1260 Thread* self = Thread::Current(); 1261 if (self == NULL) { 1262 LOG(FATAL) << "attempting to detach thread that is not attached"; 1263 } 1264 if (self->HasManagedStack()) { 1265 LOG(FATAL) << *Thread::Current() << " attempting to detach while still running code"; 1266 } 1267 thread_list_->Unregister(self); 1268} 1269 1270mirror::Throwable* Runtime::GetPreAllocatedOutOfMemoryError() { 1271 mirror::Throwable* oome = pre_allocated_OutOfMemoryError_.Read(); 1272 if (oome == nullptr) { 1273 LOG(ERROR) << "Failed to return pre-allocated OOME"; 1274 } 1275 return oome; 1276} 1277 1278mirror::Throwable* Runtime::GetPreAllocatedNoClassDefFoundError() { 1279 mirror::Throwable* ncdfe = pre_allocated_NoClassDefFoundError_.Read(); 1280 if (ncdfe == nullptr) { 1281 LOG(ERROR) << "Failed to return pre-allocated NoClassDefFoundError"; 1282 } 1283 return ncdfe; 1284} 1285 1286void Runtime::VisitConstantRoots(RootCallback* callback, void* arg) { 1287 // Visit the classes held as static in mirror classes, these can be visited concurrently and only 1288 // need to be visited once per GC since they never change. 1289 mirror::ArtField::VisitRoots(callback, arg); 1290 mirror::ArtMethod::VisitRoots(callback, arg); 1291 mirror::Class::VisitRoots(callback, arg); 1292 mirror::Reference::VisitRoots(callback, arg); 1293 mirror::StackTraceElement::VisitRoots(callback, arg); 1294 mirror::String::VisitRoots(callback, arg); 1295 mirror::Throwable::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 { 1336 MutexLock mu(Thread::Current(), method_verifier_lock_); 1337 for (verifier::MethodVerifier* verifier : method_verifiers_) { 1338 verifier->VisitRoots(callback, arg); 1339 } 1340 } 1341 VisitTransactionRoots(callback, arg); 1342 instrumentation_.VisitRoots(callback, arg); 1343} 1344 1345void Runtime::VisitNonConcurrentRoots(RootCallback* callback, void* arg) { 1346 thread_list_->VisitRoots(callback, arg); 1347 VisitNonThreadRoots(callback, arg); 1348} 1349 1350void Runtime::VisitThreadRoots(RootCallback* callback, void* arg) { 1351 thread_list_->VisitRoots(callback, arg); 1352} 1353 1354size_t Runtime::FlipThreadRoots(Closure* thread_flip_visitor, Closure* flip_callback, 1355 gc::collector::GarbageCollector* collector) { 1356 return thread_list_->FlipThreadRoots(thread_flip_visitor, flip_callback, collector); 1357} 1358 1359void Runtime::VisitRoots(RootCallback* callback, void* arg, VisitRootFlags flags) { 1360 VisitNonConcurrentRoots(callback, arg); 1361 VisitConcurrentRoots(callback, arg, flags); 1362} 1363 1364mirror::ObjectArray<mirror::ArtMethod>* Runtime::CreateDefaultImt(ClassLinker* cl) { 1365 Thread* self = Thread::Current(); 1366 StackHandleScope<1> hs(self); 1367 Handle<mirror::ObjectArray<mirror::ArtMethod>> imtable( 1368 hs.NewHandle(cl->AllocArtMethodArray(self, 64))); 1369 mirror::ArtMethod* imt_conflict_method = Runtime::Current()->GetImtConflictMethod(); 1370 for (size_t i = 0; i < static_cast<size_t>(imtable->GetLength()); i++) { 1371 imtable->Set<false>(i, imt_conflict_method); 1372 } 1373 return imtable.Get(); 1374} 1375 1376mirror::ArtMethod* Runtime::CreateImtConflictMethod() { 1377 Thread* self = Thread::Current(); 1378 Runtime* runtime = Runtime::Current(); 1379 ClassLinker* class_linker = runtime->GetClassLinker(); 1380 StackHandleScope<1> hs(self); 1381 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self))); 1382 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod()); 1383 // TODO: use a special method for imt conflict method saves. 1384 method->SetDexMethodIndex(DexFile::kDexNoIndex); 1385 // When compiling, the code pointer will get set later when the image is loaded. 1386 if (runtime->IsAotCompiler()) { 1387 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1388 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1389 } else { 1390 method->SetEntryPointFromQuickCompiledCode(GetQuickImtConflictStub()); 1391 } 1392 return method.Get(); 1393} 1394 1395void Runtime::SetImtConflictMethod(mirror::ArtMethod* method) { 1396 imt_conflict_method_ = GcRoot<mirror::ArtMethod>(method); 1397} 1398 1399mirror::ArtMethod* Runtime::CreateResolutionMethod() { 1400 Thread* self = Thread::Current(); 1401 Runtime* runtime = Runtime::Current(); 1402 ClassLinker* class_linker = runtime->GetClassLinker(); 1403 StackHandleScope<1> hs(self); 1404 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self))); 1405 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod()); 1406 // TODO: use a special method for resolution method saves 1407 method->SetDexMethodIndex(DexFile::kDexNoIndex); 1408 // When compiling, the code pointer will get set later when the image is loaded. 1409 if (runtime->IsAotCompiler()) { 1410 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1411 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1412 } else { 1413 method->SetEntryPointFromQuickCompiledCode(GetQuickResolutionStub()); 1414 } 1415 return method.Get(); 1416} 1417 1418mirror::ArtMethod* Runtime::CreateCalleeSaveMethod() { 1419 Thread* self = Thread::Current(); 1420 Runtime* runtime = Runtime::Current(); 1421 ClassLinker* class_linker = runtime->GetClassLinker(); 1422 StackHandleScope<1> hs(self); 1423 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self))); 1424 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod()); 1425 // TODO: use a special method for callee saves 1426 method->SetDexMethodIndex(DexFile::kDexNoIndex); 1427 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1428 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1429 DCHECK_NE(instruction_set_, kNone); 1430 return method.Get(); 1431} 1432 1433void Runtime::DisallowNewSystemWeaks() { 1434 monitor_list_->DisallowNewMonitors(); 1435 intern_table_->DisallowNewInterns(); 1436 java_vm_->DisallowNewWeakGlobals(); 1437} 1438 1439void Runtime::AllowNewSystemWeaks() { 1440 monitor_list_->AllowNewMonitors(); 1441 intern_table_->AllowNewInterns(); 1442 java_vm_->AllowNewWeakGlobals(); 1443} 1444 1445void Runtime::EnsureNewSystemWeaksDisallowed() { 1446 // Lock and unlock the system weak locks once to ensure that no 1447 // threads are still in the middle of adding new system weaks. 1448 monitor_list_->EnsureNewMonitorsDisallowed(); 1449 intern_table_->EnsureNewInternsDisallowed(); 1450 java_vm_->EnsureNewWeakGlobalsDisallowed(); 1451} 1452 1453void Runtime::SetInstructionSet(InstructionSet instruction_set) { 1454 instruction_set_ = instruction_set; 1455 if ((instruction_set_ == kThumb2) || (instruction_set_ == kArm)) { 1456 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1457 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1458 callee_save_method_frame_infos_[i] = arm::ArmCalleeSaveMethodFrameInfo(type); 1459 } 1460 } else if (instruction_set_ == kMips) { 1461 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1462 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1463 callee_save_method_frame_infos_[i] = mips::MipsCalleeSaveMethodFrameInfo(type); 1464 } 1465 } else if (instruction_set_ == kMips64) { 1466 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1467 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1468 callee_save_method_frame_infos_[i] = mips64::Mips64CalleeSaveMethodFrameInfo(type); 1469 } 1470 } else if (instruction_set_ == kX86) { 1471 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1472 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1473 callee_save_method_frame_infos_[i] = x86::X86CalleeSaveMethodFrameInfo(type); 1474 } 1475 } else if (instruction_set_ == kX86_64) { 1476 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1477 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1478 callee_save_method_frame_infos_[i] = x86_64::X86_64CalleeSaveMethodFrameInfo(type); 1479 } 1480 } else if (instruction_set_ == kArm64) { 1481 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1482 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1483 callee_save_method_frame_infos_[i] = arm64::Arm64CalleeSaveMethodFrameInfo(type); 1484 } 1485 } else { 1486 UNIMPLEMENTED(FATAL) << instruction_set_; 1487 } 1488} 1489 1490void Runtime::SetCalleeSaveMethod(mirror::ArtMethod* method, CalleeSaveType type) { 1491 DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType)); 1492 callee_save_methods_[type] = GcRoot<mirror::ArtMethod>(method); 1493} 1494 1495const std::vector<const DexFile*>& Runtime::GetCompileTimeClassPath(jobject class_loader) { 1496 if (class_loader == NULL) { 1497 return GetClassLinker()->GetBootClassPath(); 1498 } 1499 CHECK(UseCompileTimeClassPath()); 1500 CompileTimeClassPaths::const_iterator it = compile_time_class_paths_.find(class_loader); 1501 CHECK(it != compile_time_class_paths_.end()); 1502 return it->second; 1503} 1504 1505void Runtime::SetCompileTimeClassPath(jobject class_loader, 1506 std::vector<const DexFile*>& class_path) { 1507 CHECK(!IsStarted()); 1508 use_compile_time_class_path_ = true; 1509 compile_time_class_paths_.Put(class_loader, class_path); 1510} 1511 1512void Runtime::AddMethodVerifier(verifier::MethodVerifier* verifier) { 1513 DCHECK(verifier != nullptr); 1514 if (gAborting) { 1515 return; 1516 } 1517 MutexLock mu(Thread::Current(), method_verifier_lock_); 1518 method_verifiers_.insert(verifier); 1519} 1520 1521void Runtime::RemoveMethodVerifier(verifier::MethodVerifier* verifier) { 1522 DCHECK(verifier != nullptr); 1523 if (gAborting) { 1524 return; 1525 } 1526 MutexLock mu(Thread::Current(), method_verifier_lock_); 1527 auto it = method_verifiers_.find(verifier); 1528 CHECK(it != method_verifiers_.end()); 1529 method_verifiers_.erase(it); 1530} 1531 1532void Runtime::StartProfiler(const char* profile_output_filename) { 1533 profile_output_filename_ = profile_output_filename; 1534 profiler_started_ = 1535 BackgroundMethodSamplingProfiler::Start(profile_output_filename_, profiler_options_); 1536} 1537 1538// Transaction support. 1539void Runtime::EnterTransactionMode(Transaction* transaction) { 1540 DCHECK(IsAotCompiler()); 1541 DCHECK(transaction != nullptr); 1542 DCHECK(!IsActiveTransaction()); 1543 preinitialization_transaction_ = transaction; 1544} 1545 1546void Runtime::ExitTransactionMode() { 1547 DCHECK(IsAotCompiler()); 1548 DCHECK(IsActiveTransaction()); 1549 preinitialization_transaction_ = nullptr; 1550} 1551 1552 1553bool Runtime::IsTransactionAborted() const { 1554 if (!IsActiveTransaction()) { 1555 return false; 1556 } else { 1557 DCHECK(IsAotCompiler()); 1558 return preinitialization_transaction_->IsAborted(); 1559 } 1560} 1561 1562void Runtime::AbortTransactionAndThrowInternalError(Thread* self, 1563 const std::string& abort_message) { 1564 DCHECK(IsAotCompiler()); 1565 DCHECK(IsActiveTransaction()); 1566 // Throwing an exception may cause its class initialization. If we mark the transaction 1567 // aborted before that, we may warn with a false alarm. Throwing the exception before 1568 // marking the transaction aborted avoids that. 1569 preinitialization_transaction_->ThrowInternalError(self, false); 1570 preinitialization_transaction_->Abort(abort_message); 1571} 1572 1573void Runtime::ThrowInternalErrorForAbortedTransaction(Thread* self) { 1574 DCHECK(IsAotCompiler()); 1575 DCHECK(IsActiveTransaction()); 1576 preinitialization_transaction_->ThrowInternalError(self, true); 1577} 1578 1579void Runtime::RecordWriteFieldBoolean(mirror::Object* obj, MemberOffset field_offset, 1580 uint8_t value, bool is_volatile) const { 1581 DCHECK(IsAotCompiler()); 1582 DCHECK(IsActiveTransaction()); 1583 preinitialization_transaction_->RecordWriteFieldBoolean(obj, field_offset, value, is_volatile); 1584} 1585 1586void Runtime::RecordWriteFieldByte(mirror::Object* obj, MemberOffset field_offset, 1587 int8_t value, bool is_volatile) const { 1588 DCHECK(IsAotCompiler()); 1589 DCHECK(IsActiveTransaction()); 1590 preinitialization_transaction_->RecordWriteFieldByte(obj, field_offset, value, is_volatile); 1591} 1592 1593void Runtime::RecordWriteFieldChar(mirror::Object* obj, MemberOffset field_offset, 1594 uint16_t value, bool is_volatile) const { 1595 DCHECK(IsAotCompiler()); 1596 DCHECK(IsActiveTransaction()); 1597 preinitialization_transaction_->RecordWriteFieldChar(obj, field_offset, value, is_volatile); 1598} 1599 1600void Runtime::RecordWriteFieldShort(mirror::Object* obj, MemberOffset field_offset, 1601 int16_t value, bool is_volatile) const { 1602 DCHECK(IsAotCompiler()); 1603 DCHECK(IsActiveTransaction()); 1604 preinitialization_transaction_->RecordWriteFieldShort(obj, field_offset, value, is_volatile); 1605} 1606 1607void Runtime::RecordWriteField32(mirror::Object* obj, MemberOffset field_offset, 1608 uint32_t value, bool is_volatile) const { 1609 DCHECK(IsAotCompiler()); 1610 DCHECK(IsActiveTransaction()); 1611 preinitialization_transaction_->RecordWriteField32(obj, field_offset, value, is_volatile); 1612} 1613 1614void Runtime::RecordWriteField64(mirror::Object* obj, MemberOffset field_offset, 1615 uint64_t value, bool is_volatile) const { 1616 DCHECK(IsAotCompiler()); 1617 DCHECK(IsActiveTransaction()); 1618 preinitialization_transaction_->RecordWriteField64(obj, field_offset, value, is_volatile); 1619} 1620 1621void Runtime::RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset, 1622 mirror::Object* value, bool is_volatile) const { 1623 DCHECK(IsAotCompiler()); 1624 DCHECK(IsActiveTransaction()); 1625 preinitialization_transaction_->RecordWriteFieldReference(obj, field_offset, value, is_volatile); 1626} 1627 1628void Runtime::RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const { 1629 DCHECK(IsAotCompiler()); 1630 DCHECK(IsActiveTransaction()); 1631 preinitialization_transaction_->RecordWriteArray(array, index, value); 1632} 1633 1634void Runtime::RecordStrongStringInsertion(mirror::String* s) const { 1635 DCHECK(IsAotCompiler()); 1636 DCHECK(IsActiveTransaction()); 1637 preinitialization_transaction_->RecordStrongStringInsertion(s); 1638} 1639 1640void Runtime::RecordWeakStringInsertion(mirror::String* s) const { 1641 DCHECK(IsAotCompiler()); 1642 DCHECK(IsActiveTransaction()); 1643 preinitialization_transaction_->RecordWeakStringInsertion(s); 1644} 1645 1646void Runtime::RecordStrongStringRemoval(mirror::String* s) const { 1647 DCHECK(IsAotCompiler()); 1648 DCHECK(IsActiveTransaction()); 1649 preinitialization_transaction_->RecordStrongStringRemoval(s); 1650} 1651 1652void Runtime::RecordWeakStringRemoval(mirror::String* s) const { 1653 DCHECK(IsAotCompiler()); 1654 DCHECK(IsActiveTransaction()); 1655 preinitialization_transaction_->RecordWeakStringRemoval(s); 1656} 1657 1658void Runtime::SetFaultMessage(const std::string& message) { 1659 MutexLock mu(Thread::Current(), fault_message_lock_); 1660 fault_message_ = message; 1661} 1662 1663void Runtime::AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* argv) 1664 const { 1665 if (GetInstrumentation()->InterpretOnly() || UseJit()) { 1666 argv->push_back("--compiler-filter=interpret-only"); 1667 } 1668 1669 // Make the dex2oat instruction set match that of the launching runtime. If we have multiple 1670 // architecture support, dex2oat may be compiled as a different instruction-set than that 1671 // currently being executed. 1672 std::string instruction_set("--instruction-set="); 1673 instruction_set += GetInstructionSetString(kRuntimeISA); 1674 argv->push_back(instruction_set); 1675 1676 std::unique_ptr<const InstructionSetFeatures> features(InstructionSetFeatures::FromCppDefines()); 1677 std::string feature_string("--instruction-set-features="); 1678 feature_string += features->GetFeatureString(); 1679 argv->push_back(feature_string); 1680 1681 if (Dbg::IsJdwpConfigured()) { 1682 argv->push_back("--debuggable"); 1683 } 1684} 1685 1686void Runtime::UpdateProfilerState(int state) { 1687 VLOG(profiler) << "Profiler state updated to " << state; 1688} 1689 1690void Runtime::CreateJit() { 1691 CHECK(jit_options_.get() != nullptr); 1692 std::string error_msg; 1693 jit_.reset(jit::Jit::Create(jit_options_.get(), &error_msg)); 1694 if (jit_.get() != nullptr) { 1695 compiler_callbacks_ = jit_->GetCompilerCallbacks(); 1696 } else { 1697 LOG(WARNING) << "Failed to create JIT " << error_msg; 1698 } 1699} 1700 1701} // namespace art 1702