runtime.cc revision 97cbc9206e9adc473a90650ebdb5d620f517ff04
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#include <sys/prctl.h> 24#endif 25 26#include <signal.h> 27#include <sys/syscall.h> 28#include "base/memory_tool.h" 29 30#include <cstdio> 31#include <cstdlib> 32#include <limits> 33#include <memory_representation.h> 34#include <vector> 35#include <fcntl.h> 36 37#include "JniConstants.h" 38#include "ScopedLocalRef.h" 39#include "arch/arm/quick_method_frame_info_arm.h" 40#include "arch/arm/registers_arm.h" 41#include "arch/arm64/quick_method_frame_info_arm64.h" 42#include "arch/arm64/registers_arm64.h" 43#include "arch/instruction_set_features.h" 44#include "arch/mips/quick_method_frame_info_mips.h" 45#include "arch/mips/registers_mips.h" 46#include "arch/mips64/quick_method_frame_info_mips64.h" 47#include "arch/mips64/registers_mips64.h" 48#include "arch/x86/quick_method_frame_info_x86.h" 49#include "arch/x86/registers_x86.h" 50#include "arch/x86_64/quick_method_frame_info_x86_64.h" 51#include "arch/x86_64/registers_x86_64.h" 52#include "art_field-inl.h" 53#include "art_method-inl.h" 54#include "asm_support.h" 55#include "atomic.h" 56#include "base/arena_allocator.h" 57#include "base/dumpable.h" 58#include "base/stl_util.h" 59#include "base/systrace.h" 60#include "base/unix_file/fd_file.h" 61#include "class_linker-inl.h" 62#include "compiler_callbacks.h" 63#include "compiler_filter.h" 64#include "debugger.h" 65#include "elf_file.h" 66#include "entrypoints/runtime_asm_entrypoints.h" 67#include "experimental_flags.h" 68#include "fault_handler.h" 69#include "gc/accounting/card_table-inl.h" 70#include "gc/heap.h" 71#include "gc/space/image_space.h" 72#include "gc/space/space-inl.h" 73#include "handle_scope-inl.h" 74#include "image-inl.h" 75#include "instrumentation.h" 76#include "intern_table.h" 77#include "interpreter/interpreter.h" 78#include "jit/jit.h" 79#include "jni_internal.h" 80#include "linear_alloc.h" 81#include "lambda/box_table.h" 82#include "mirror/array.h" 83#include "mirror/class-inl.h" 84#include "mirror/class_loader.h" 85#include "mirror/field.h" 86#include "mirror/method.h" 87#include "mirror/stack_trace_element.h" 88#include "mirror/throwable.h" 89#include "monitor.h" 90#include "native/dalvik_system_DexFile.h" 91#include "native/dalvik_system_VMDebug.h" 92#include "native/dalvik_system_VMRuntime.h" 93#include "native/dalvik_system_VMStack.h" 94#include "native/dalvik_system_ZygoteHooks.h" 95#include "native/java_lang_Class.h" 96#include "native/java_lang_DexCache.h" 97#include "native/java_lang_Object.h" 98#include "native/java_lang_String.h" 99#include "native/java_lang_StringFactory.h" 100#include "native/java_lang_System.h" 101#include "native/java_lang_Thread.h" 102#include "native/java_lang_Throwable.h" 103#include "native/java_lang_VMClassLoader.h" 104#include "native/java_lang_ref_FinalizerReference.h" 105#include "native/java_lang_ref_Reference.h" 106#include "native/java_lang_reflect_AbstractMethod.h" 107#include "native/java_lang_reflect_Array.h" 108#include "native/java_lang_reflect_Constructor.h" 109#include "native/java_lang_reflect_Field.h" 110#include "native/java_lang_reflect_Method.h" 111#include "native/java_lang_reflect_Proxy.h" 112#include "native/java_util_concurrent_atomic_AtomicLong.h" 113#include "native/libcore_util_CharsetUtils.h" 114#include "native/org_apache_harmony_dalvik_ddmc_DdmServer.h" 115#include "native/org_apache_harmony_dalvik_ddmc_DdmVmInternal.h" 116#include "native/sun_misc_Unsafe.h" 117#include "native_bridge_art_interface.h" 118#include "oat_file.h" 119#include "oat_file_manager.h" 120#include "os.h" 121#include "parsed_options.h" 122#include "profiler.h" 123#include "jit/profile_saver.h" 124#include "quick/quick_method_frame_info.h" 125#include "reflection.h" 126#include "runtime_options.h" 127#include "ScopedLocalRef.h" 128#include "scoped_thread_state_change.h" 129#include "sigchain.h" 130#include "signal_catcher.h" 131#include "signal_set.h" 132#include "thread.h" 133#include "thread_list.h" 134#include "trace.h" 135#include "transaction.h" 136#include "utils.h" 137#include "verifier/method_verifier.h" 138#include "well_known_classes.h" 139 140namespace art { 141 142// If a signal isn't handled properly, enable a handler that attempts to dump the Java stack. 143static constexpr bool kEnableJavaStackTraceHandler = false; 144// Tuned by compiling GmsCore under perf and measuring time spent in DescriptorEquals for class 145// linking. 146static constexpr double kLowMemoryMinLoadFactor = 0.5; 147static constexpr double kLowMemoryMaxLoadFactor = 0.8; 148static constexpr double kNormalMinLoadFactor = 0.4; 149static constexpr double kNormalMaxLoadFactor = 0.7; 150Runtime* Runtime::instance_ = nullptr; 151 152struct TraceConfig { 153 Trace::TraceMode trace_mode; 154 Trace::TraceOutputMode trace_output_mode; 155 std::string trace_file; 156 size_t trace_file_size; 157}; 158 159Runtime::Runtime() 160 : resolution_method_(nullptr), 161 imt_conflict_method_(nullptr), 162 imt_unimplemented_method_(nullptr), 163 instruction_set_(kNone), 164 compiler_callbacks_(nullptr), 165 is_zygote_(false), 166 must_relocate_(false), 167 is_concurrent_gc_enabled_(true), 168 is_explicit_gc_disabled_(false), 169 dex2oat_enabled_(true), 170 image_dex2oat_enabled_(true), 171 default_stack_size_(0), 172 heap_(nullptr), 173 max_spins_before_thin_lock_inflation_(Monitor::kDefaultMaxSpinsBeforeThinLockInflation), 174 monitor_list_(nullptr), 175 monitor_pool_(nullptr), 176 thread_list_(nullptr), 177 intern_table_(nullptr), 178 class_linker_(nullptr), 179 signal_catcher_(nullptr), 180 java_vm_(nullptr), 181 fault_message_lock_("Fault message lock"), 182 fault_message_(""), 183 threads_being_born_(0), 184 shutdown_cond_(new ConditionVariable("Runtime shutdown", *Locks::runtime_shutdown_lock_)), 185 shutting_down_(false), 186 shutting_down_started_(false), 187 started_(false), 188 finished_starting_(false), 189 vfprintf_(nullptr), 190 exit_(nullptr), 191 abort_(nullptr), 192 stats_enabled_(false), 193 is_running_on_memory_tool_(RUNNING_ON_MEMORY_TOOL), 194 instrumentation_(), 195 main_thread_group_(nullptr), 196 system_thread_group_(nullptr), 197 system_class_loader_(nullptr), 198 dump_gc_performance_on_shutdown_(false), 199 preinitialization_transaction_(nullptr), 200 verify_(verifier::VerifyMode::kNone), 201 allow_dex_file_fallback_(true), 202 target_sdk_version_(0), 203 implicit_null_checks_(false), 204 implicit_so_checks_(false), 205 implicit_suspend_checks_(false), 206 no_sig_chain_(false), 207 force_native_bridge_(false), 208 is_native_bridge_loaded_(false), 209 is_native_debuggable_(false), 210 zygote_max_failed_boots_(0), 211 experimental_flags_(ExperimentalFlags::kNone), 212 oat_file_manager_(nullptr), 213 is_low_memory_mode_(false), 214 safe_mode_(false), 215 dump_native_stack_on_sig_quit_(true), 216 pruned_dalvik_cache_(false), 217 // Initially assume we perceive jank in case the process state is never updated. 218 process_state_(kProcessStateJankPerceptible), 219 zygote_no_threads_(false) { 220 CheckAsmSupportOffsetsAndSizes(); 221 std::fill(callee_save_methods_, callee_save_methods_ + arraysize(callee_save_methods_), 0u); 222 interpreter::CheckInterpreterAsmConstants(); 223} 224 225Runtime::~Runtime() { 226 ScopedTrace trace("Runtime shutdown"); 227 if (is_native_bridge_loaded_) { 228 UnloadNativeBridge(); 229 } 230 231 if (dump_gc_performance_on_shutdown_) { 232 // This can't be called from the Heap destructor below because it 233 // could call RosAlloc::InspectAll() which needs the thread_list 234 // to be still alive. 235 heap_->DumpGcPerformanceInfo(LOG(INFO)); 236 } 237 238 Thread* self = Thread::Current(); 239 const bool attach_shutdown_thread = self == nullptr; 240 if (attach_shutdown_thread) { 241 CHECK(AttachCurrentThread("Shutdown thread", false, nullptr, false)); 242 self = Thread::Current(); 243 } else { 244 LOG(WARNING) << "Current thread not detached in Runtime shutdown"; 245 } 246 247 { 248 ScopedTrace trace2("Wait for shutdown cond"); 249 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 250 shutting_down_started_ = true; 251 while (threads_being_born_ > 0) { 252 shutdown_cond_->Wait(self); 253 } 254 shutting_down_ = true; 255 } 256 // Shutdown and wait for the daemons. 257 CHECK(self != nullptr); 258 if (IsFinishedStarting()) { 259 ScopedTrace trace2("Waiting for Daemons"); 260 self->ClearException(); 261 self->GetJniEnv()->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 262 WellKnownClasses::java_lang_Daemons_stop); 263 } 264 265 Trace::Shutdown(); 266 267 if (attach_shutdown_thread) { 268 DetachCurrentThread(); 269 self = nullptr; 270 } 271 272 // Make sure to let the GC complete if it is running. 273 heap_->WaitForGcToComplete(gc::kGcCauseBackground, self); 274 heap_->DeleteThreadPool(); 275 if (jit_ != nullptr) { 276 ScopedTrace trace2("Delete jit"); 277 VLOG(jit) << "Deleting jit thread pool"; 278 // Delete thread pool before the thread list since we don't want to wait forever on the 279 // JIT compiler threads. 280 jit_->DeleteThreadPool(); 281 // Similarly, stop the profile saver thread before deleting the thread list. 282 jit_->StopProfileSaver(); 283 } 284 285 // Make sure our internal threads are dead before we start tearing down things they're using. 286 Dbg::StopJdwp(); 287 delete signal_catcher_; 288 289 // Make sure all other non-daemon threads have terminated, and all daemon threads are suspended. 290 { 291 ScopedTrace trace2("Delete thread list"); 292 delete thread_list_; 293 } 294 // Delete the JIT after thread list to ensure that there is no remaining threads which could be 295 // accessing the instrumentation when we delete it. 296 if (jit_ != nullptr) { 297 VLOG(jit) << "Deleting jit"; 298 jit_.reset(nullptr); 299 } 300 301 // Shutdown the fault manager if it was initialized. 302 fault_manager.Shutdown(); 303 304 ScopedTrace trace2("Delete state"); 305 delete monitor_list_; 306 delete monitor_pool_; 307 delete class_linker_; 308 delete heap_; 309 delete intern_table_; 310 delete java_vm_; 311 delete oat_file_manager_; 312 Thread::Shutdown(); 313 QuasiAtomic::Shutdown(); 314 verifier::MethodVerifier::Shutdown(); 315 316 // Destroy allocators before shutting down the MemMap because they may use it. 317 linear_alloc_.reset(); 318 low_4gb_arena_pool_.reset(); 319 arena_pool_.reset(); 320 jit_arena_pool_.reset(); 321 MemMap::Shutdown(); 322 323 // TODO: acquire a static mutex on Runtime to avoid racing. 324 CHECK(instance_ == nullptr || instance_ == this); 325 instance_ = nullptr; 326} 327 328struct AbortState { 329 void Dump(std::ostream& os) const { 330 if (gAborting > 1) { 331 os << "Runtime aborting --- recursively, so no thread-specific detail!\n"; 332 return; 333 } 334 gAborting++; 335 os << "Runtime aborting...\n"; 336 if (Runtime::Current() == nullptr) { 337 os << "(Runtime does not yet exist!)\n"; 338 DumpNativeStack(os, GetTid(), nullptr, " native: ", nullptr); 339 return; 340 } 341 Thread* self = Thread::Current(); 342 if (self == nullptr) { 343 os << "(Aborting thread was not attached to runtime!)\n"; 344 DumpKernelStack(os, GetTid(), " kernel: ", false); 345 DumpNativeStack(os, GetTid(), nullptr, " native: ", nullptr); 346 } else { 347 os << "Aborting thread:\n"; 348 if (Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)) { 349 DumpThread(os, self); 350 } else { 351 if (Locks::mutator_lock_->SharedTryLock(self)) { 352 DumpThread(os, self); 353 Locks::mutator_lock_->SharedUnlock(self); 354 } 355 } 356 } 357 DumpAllThreads(os, self); 358 } 359 360 // No thread-safety analysis as we do explicitly test for holding the mutator lock. 361 void DumpThread(std::ostream& os, Thread* self) const NO_THREAD_SAFETY_ANALYSIS { 362 DCHECK(Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)); 363 self->Dump(os); 364 if (self->IsExceptionPending()) { 365 mirror::Throwable* exception = self->GetException(); 366 os << "Pending exception " << exception->Dump(); 367 } 368 } 369 370 void DumpAllThreads(std::ostream& os, Thread* self) const { 371 Runtime* runtime = Runtime::Current(); 372 if (runtime != nullptr) { 373 ThreadList* thread_list = runtime->GetThreadList(); 374 if (thread_list != nullptr) { 375 bool tll_already_held = Locks::thread_list_lock_->IsExclusiveHeld(self); 376 bool ml_already_held = Locks::mutator_lock_->IsSharedHeld(self); 377 if (!tll_already_held || !ml_already_held) { 378 os << "Dumping all threads without appropriate locks held:" 379 << (!tll_already_held ? " thread list lock" : "") 380 << (!ml_already_held ? " mutator lock" : "") 381 << "\n"; 382 } 383 os << "All threads:\n"; 384 thread_list->Dump(os); 385 } 386 } 387 } 388}; 389 390void Runtime::Abort() { 391 gAborting++; // set before taking any locks 392 393 // Ensure that we don't have multiple threads trying to abort at once, 394 // which would result in significantly worse diagnostics. 395 MutexLock mu(Thread::Current(), *Locks::abort_lock_); 396 397 // Get any pending output out of the way. 398 fflush(nullptr); 399 400 // Many people have difficulty distinguish aborts from crashes, 401 // so be explicit. 402 AbortState state; 403 LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state); 404 405 // Call the abort hook if we have one. 406 if (Runtime::Current() != nullptr && Runtime::Current()->abort_ != nullptr) { 407 LOG(INTERNAL_FATAL) << "Calling abort hook..."; 408 Runtime::Current()->abort_(); 409 // notreached 410 LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!"; 411 } 412 413#if defined(__GLIBC__) 414 // TODO: we ought to be able to use pthread_kill(3) here (or abort(3), 415 // which POSIX defines in terms of raise(3), which POSIX defines in terms 416 // of pthread_kill(3)). On Linux, though, libcorkscrew can't unwind through 417 // libpthread, which means the stacks we dump would be useless. Calling 418 // tgkill(2) directly avoids that. 419 syscall(__NR_tgkill, getpid(), GetTid(), SIGABRT); 420 // TODO: LLVM installs it's own SIGABRT handler so exit to be safe... Can we disable that in LLVM? 421 // If not, we could use sigaction(3) before calling tgkill(2) and lose this call to exit(3). 422 exit(1); 423#else 424 abort(); 425#endif 426 // notreached 427} 428 429void Runtime::PreZygoteFork() { 430 heap_->PreZygoteFork(); 431} 432 433void Runtime::CallExitHook(jint status) { 434 if (exit_ != nullptr) { 435 ScopedThreadStateChange tsc(Thread::Current(), kNative); 436 exit_(status); 437 LOG(WARNING) << "Exit hook returned instead of exiting!"; 438 } 439} 440 441void Runtime::SweepSystemWeaks(IsMarkedVisitor* visitor) { 442 GetInternTable()->SweepInternTableWeaks(visitor); 443 GetMonitorList()->SweepMonitorList(visitor); 444 GetJavaVM()->SweepJniWeakGlobals(visitor); 445 GetHeap()->SweepAllocationRecords(visitor); 446 GetLambdaBoxTable()->SweepWeakBoxedLambdas(visitor); 447} 448 449bool Runtime::ParseOptions(const RuntimeOptions& raw_options, 450 bool ignore_unrecognized, 451 RuntimeArgumentMap* runtime_options) { 452 InitLogging(/* argv */ nullptr); // Calls Locks::Init() as a side effect. 453 bool parsed = ParsedOptions::Parse(raw_options, ignore_unrecognized, runtime_options); 454 if (!parsed) { 455 LOG(ERROR) << "Failed to parse options"; 456 return false; 457 } 458 return true; 459} 460 461bool Runtime::Create(RuntimeArgumentMap&& runtime_options) { 462 // TODO: acquire a static mutex on Runtime to avoid racing. 463 if (Runtime::instance_ != nullptr) { 464 return false; 465 } 466 instance_ = new Runtime; 467 if (!instance_->Init(std::move(runtime_options))) { 468 // TODO: Currently deleting the instance will abort the runtime on destruction. Now This will 469 // leak memory, instead. Fix the destructor. b/19100793. 470 // delete instance_; 471 instance_ = nullptr; 472 return false; 473 } 474 return true; 475} 476 477bool Runtime::Create(const RuntimeOptions& raw_options, bool ignore_unrecognized) { 478 RuntimeArgumentMap runtime_options; 479 return ParseOptions(raw_options, ignore_unrecognized, &runtime_options) && 480 Create(std::move(runtime_options)); 481} 482 483static jobject CreateSystemClassLoader(Runtime* runtime) { 484 if (runtime->IsAotCompiler() && !runtime->GetCompilerCallbacks()->IsBootImage()) { 485 return nullptr; 486 } 487 488 ScopedObjectAccess soa(Thread::Current()); 489 ClassLinker* cl = Runtime::Current()->GetClassLinker(); 490 auto pointer_size = cl->GetImagePointerSize(); 491 492 StackHandleScope<2> hs(soa.Self()); 493 Handle<mirror::Class> class_loader_class( 494 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader))); 495 CHECK(cl->EnsureInitialized(soa.Self(), class_loader_class, true, true)); 496 497 ArtMethod* getSystemClassLoader = class_loader_class->FindDirectMethod( 498 "getSystemClassLoader", "()Ljava/lang/ClassLoader;", pointer_size); 499 CHECK(getSystemClassLoader != nullptr); 500 501 JValue result = InvokeWithJValues(soa, nullptr, soa.EncodeMethod(getSystemClassLoader), nullptr); 502 JNIEnv* env = soa.Self()->GetJniEnv(); 503 ScopedLocalRef<jobject> system_class_loader(env, soa.AddLocalReference<jobject>(result.GetL())); 504 CHECK(system_class_loader.get() != nullptr); 505 506 soa.Self()->SetClassLoaderOverride(system_class_loader.get()); 507 508 Handle<mirror::Class> thread_class( 509 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread))); 510 CHECK(cl->EnsureInitialized(soa.Self(), thread_class, true, true)); 511 512 ArtField* contextClassLoader = 513 thread_class->FindDeclaredInstanceField("contextClassLoader", "Ljava/lang/ClassLoader;"); 514 CHECK(contextClassLoader != nullptr); 515 516 // We can't run in a transaction yet. 517 contextClassLoader->SetObject<false>(soa.Self()->GetPeer(), 518 soa.Decode<mirror::ClassLoader*>(system_class_loader.get())); 519 520 return env->NewGlobalRef(system_class_loader.get()); 521} 522 523std::string Runtime::GetPatchoatExecutable() const { 524 if (!patchoat_executable_.empty()) { 525 return patchoat_executable_; 526 } 527 std::string patchoat_executable(GetAndroidRoot()); 528 patchoat_executable += (kIsDebugBuild ? "/bin/patchoatd" : "/bin/patchoat"); 529 return patchoat_executable; 530} 531 532std::string Runtime::GetCompilerExecutable() const { 533 if (!compiler_executable_.empty()) { 534 return compiler_executable_; 535 } 536 std::string compiler_executable(GetAndroidRoot()); 537 compiler_executable += (kIsDebugBuild ? "/bin/dex2oatd" : "/bin/dex2oat"); 538 return compiler_executable; 539} 540 541bool Runtime::Start() { 542 VLOG(startup) << "Runtime::Start entering"; 543 544 CHECK(!no_sig_chain_) << "A started runtime should have sig chain enabled"; 545 546 // If a debug host build, disable ptrace restriction for debugging and test timeout thread dump. 547 // Only 64-bit as prctl() may fail in 32 bit userspace on a 64-bit kernel. 548#if defined(__linux__) && !defined(ART_TARGET_ANDROID) && defined(__x86_64__) 549 if (kIsDebugBuild) { 550 CHECK_EQ(prctl(PR_SET_PTRACER, PR_SET_PTRACER_ANY), 0); 551 } 552#endif 553 554 // Restore main thread state to kNative as expected by native code. 555 Thread* self = Thread::Current(); 556 557 self->TransitionFromRunnableToSuspended(kNative); 558 559 started_ = true; 560 561 if (jit_options_->UseJIT()) { 562 std::string error_msg; 563 if (!IsZygote()) { 564 // If we are the zygote then we need to wait until after forking to create the code cache 565 // due to SELinux restrictions on r/w/x memory regions. 566 CreateJit(); 567 } else if (!jit::Jit::LoadCompilerLibrary(&error_msg)) { 568 // Try to load compiler pre zygote to reduce PSS. b/27744947 569 LOG(WARNING) << "Failed to load JIT compiler with error " << error_msg; 570 } 571 } 572 573 if (!IsImageDex2OatEnabled() || !GetHeap()->HasBootImageSpace()) { 574 ScopedObjectAccess soa(self); 575 StackHandleScope<1> hs(soa.Self()); 576 auto klass(hs.NewHandle<mirror::Class>(mirror::Class::GetJavaLangClass())); 577 class_linker_->EnsureInitialized(soa.Self(), klass, true, true); 578 } 579 580 // InitNativeMethods needs to be after started_ so that the classes 581 // it touches will have methods linked to the oat file if necessary. 582 { 583 ScopedTrace trace2("InitNativeMethods"); 584 InitNativeMethods(); 585 } 586 587 // Initialize well known thread group values that may be accessed threads while attaching. 588 InitThreadGroups(self); 589 590 Thread::FinishStartup(); 591 592 system_class_loader_ = CreateSystemClassLoader(this); 593 594 if (is_zygote_) { 595 if (!InitZygote()) { 596 return false; 597 } 598 } else { 599 if (is_native_bridge_loaded_) { 600 PreInitializeNativeBridge("."); 601 } 602 NativeBridgeAction action = force_native_bridge_ 603 ? NativeBridgeAction::kInitialize 604 : NativeBridgeAction::kUnload; 605 InitNonZygoteOrPostFork(self->GetJniEnv(), 606 /* is_system_server */ false, 607 action, 608 GetInstructionSetString(kRuntimeISA)); 609 } 610 611 StartDaemonThreads(); 612 613 { 614 ScopedObjectAccess soa(self); 615 self->GetJniEnv()->locals.AssertEmpty(); 616 } 617 618 VLOG(startup) << "Runtime::Start exiting"; 619 finished_starting_ = true; 620 621 if (profiler_options_.IsEnabled() && !profile_output_filename_.empty()) { 622 // User has asked for a profile using -Xenable-profiler. 623 // Create the profile file if it doesn't exist. 624 int fd = open(profile_output_filename_.c_str(), O_RDWR|O_CREAT|O_EXCL, 0660); 625 if (fd >= 0) { 626 close(fd); 627 } else if (errno != EEXIST) { 628 LOG(WARNING) << "Failed to access the profile file. Profiler disabled."; 629 } 630 } 631 632 if (trace_config_.get() != nullptr && trace_config_->trace_file != "") { 633 ScopedThreadStateChange tsc(self, kWaitingForMethodTracingStart); 634 Trace::Start(trace_config_->trace_file.c_str(), 635 -1, 636 static_cast<int>(trace_config_->trace_file_size), 637 0, 638 trace_config_->trace_output_mode, 639 trace_config_->trace_mode, 640 0); 641 } 642 643 return true; 644} 645 646void Runtime::EndThreadBirth() REQUIRES(Locks::runtime_shutdown_lock_) { 647 DCHECK_GT(threads_being_born_, 0U); 648 threads_being_born_--; 649 if (shutting_down_started_ && threads_being_born_ == 0) { 650 shutdown_cond_->Broadcast(Thread::Current()); 651 } 652} 653 654// Do zygote-mode-only initialization. 655bool Runtime::InitZygote() { 656#ifdef __linux__ 657 // zygote goes into its own process group 658 setpgid(0, 0); 659 660 // See storage config details at http://source.android.com/tech/storage/ 661 // Create private mount namespace shared by all children 662 if (unshare(CLONE_NEWNS) == -1) { 663 PLOG(ERROR) << "Failed to unshare()"; 664 return false; 665 } 666 667 // Mark rootfs as being a slave so that changes from default 668 // namespace only flow into our children. 669 if (mount("rootfs", "/", nullptr, (MS_SLAVE | MS_REC), nullptr) == -1) { 670 PLOG(ERROR) << "Failed to mount() rootfs as MS_SLAVE"; 671 return false; 672 } 673 674 // Create a staging tmpfs that is shared by our children; they will 675 // bind mount storage into their respective private namespaces, which 676 // are isolated from each other. 677 const char* target_base = getenv("EMULATED_STORAGE_TARGET"); 678 if (target_base != nullptr) { 679 if (mount("tmpfs", target_base, "tmpfs", MS_NOSUID | MS_NODEV, 680 "uid=0,gid=1028,mode=0751") == -1) { 681 PLOG(ERROR) << "Failed to mount tmpfs to " << target_base; 682 return false; 683 } 684 } 685 686 return true; 687#else 688 UNIMPLEMENTED(FATAL); 689 return false; 690#endif 691} 692 693void Runtime::InitNonZygoteOrPostFork( 694 JNIEnv* env, bool is_system_server, NativeBridgeAction action, const char* isa) { 695 is_zygote_ = false; 696 697 if (is_native_bridge_loaded_) { 698 switch (action) { 699 case NativeBridgeAction::kUnload: 700 UnloadNativeBridge(); 701 is_native_bridge_loaded_ = false; 702 break; 703 704 case NativeBridgeAction::kInitialize: 705 InitializeNativeBridge(env, isa); 706 break; 707 } 708 } 709 710 // Create the thread pools. 711 heap_->CreateThreadPool(); 712 // Reset the gc performance data at zygote fork so that the GCs 713 // before fork aren't attributed to an app. 714 heap_->ResetGcPerformanceInfo(); 715 716 if (!is_system_server && !safe_mode_ && jit_options_->UseJIT() && jit_.get() == nullptr) { 717 // Note that when running ART standalone (not zygote, nor zygote fork), 718 // the jit may have already been created. 719 CreateJit(); 720 } 721 722 StartSignalCatcher(); 723 724 // Start the JDWP thread. If the command-line debugger flags specified "suspend=y", 725 // this will pause the runtime, so we probably want this to come last. 726 Dbg::StartJdwp(); 727} 728 729void Runtime::StartSignalCatcher() { 730 if (!is_zygote_) { 731 signal_catcher_ = new SignalCatcher(stack_trace_file_); 732 } 733} 734 735bool Runtime::IsShuttingDown(Thread* self) { 736 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 737 return IsShuttingDownLocked(); 738} 739 740bool Runtime::IsDebuggable() const { 741 const OatFile* oat_file = GetOatFileManager().GetPrimaryOatFile(); 742 return oat_file != nullptr && oat_file->IsDebuggable(); 743} 744 745void Runtime::StartDaemonThreads() { 746 ScopedTrace trace(__FUNCTION__); 747 VLOG(startup) << "Runtime::StartDaemonThreads entering"; 748 749 Thread* self = Thread::Current(); 750 751 // Must be in the kNative state for calling native methods. 752 CHECK_EQ(self->GetState(), kNative); 753 754 JNIEnv* env = self->GetJniEnv(); 755 env->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 756 WellKnownClasses::java_lang_Daemons_start); 757 if (env->ExceptionCheck()) { 758 env->ExceptionDescribe(); 759 LOG(FATAL) << "Error starting java.lang.Daemons"; 760 } 761 762 VLOG(startup) << "Runtime::StartDaemonThreads exiting"; 763} 764 765// Attempts to open dex files from image(s). Given the image location, try to find the oat file 766// and open it to get the stored dex file. If the image is the first for a multi-image boot 767// classpath, go on and also open the other images. 768static bool OpenDexFilesFromImage(const std::string& image_location, 769 std::vector<std::unique_ptr<const DexFile>>* dex_files, 770 size_t* failures) { 771 DCHECK(dex_files != nullptr) << "OpenDexFilesFromImage: out-param is nullptr"; 772 773 // Use a work-list approach, so that we can easily reuse the opening code. 774 std::vector<std::string> image_locations; 775 image_locations.push_back(image_location); 776 777 for (size_t index = 0; index < image_locations.size(); ++index) { 778 std::string system_filename; 779 bool has_system = false; 780 std::string cache_filename_unused; 781 bool dalvik_cache_exists_unused; 782 bool has_cache_unused; 783 bool is_global_cache_unused; 784 bool found_image = gc::space::ImageSpace::FindImageFilename(image_locations[index].c_str(), 785 kRuntimeISA, 786 &system_filename, 787 &has_system, 788 &cache_filename_unused, 789 &dalvik_cache_exists_unused, 790 &has_cache_unused, 791 &is_global_cache_unused); 792 793 if (!found_image || !has_system) { 794 return false; 795 } 796 797 // We are falling back to non-executable use of the oat file because patching failed, presumably 798 // due to lack of space. 799 std::string oat_filename = 800 ImageHeader::GetOatLocationFromImageLocation(system_filename.c_str()); 801 std::string oat_location = 802 ImageHeader::GetOatLocationFromImageLocation(image_locations[index].c_str()); 803 // Note: in the multi-image case, the image location may end in ".jar," and not ".art." Handle 804 // that here. 805 if (EndsWith(oat_location, ".jar")) { 806 oat_location.replace(oat_location.length() - 3, 3, "oat"); 807 } 808 809 std::unique_ptr<File> file(OS::OpenFileForReading(oat_filename.c_str())); 810 if (file.get() == nullptr) { 811 return false; 812 } 813 std::string error_msg; 814 std::unique_ptr<ElfFile> elf_file(ElfFile::Open(file.release(), 815 false, 816 false, 817 /*low_4gb*/false, 818 &error_msg)); 819 if (elf_file.get() == nullptr) { 820 return false; 821 } 822 std::unique_ptr<const OatFile> oat_file( 823 OatFile::OpenWithElfFile(elf_file.release(), oat_location, nullptr, &error_msg)); 824 if (oat_file == nullptr) { 825 LOG(WARNING) << "Unable to use '" << oat_filename << "' because " << error_msg; 826 return false; 827 } 828 829 for (const OatFile::OatDexFile* oat_dex_file : oat_file->GetOatDexFiles()) { 830 if (oat_dex_file == nullptr) { 831 *failures += 1; 832 continue; 833 } 834 std::unique_ptr<const DexFile> dex_file = oat_dex_file->OpenDexFile(&error_msg); 835 if (dex_file.get() == nullptr) { 836 *failures += 1; 837 } else { 838 dex_files->push_back(std::move(dex_file)); 839 } 840 } 841 842 if (index == 0) { 843 // First file. See if this is a multi-image environment, and if so, enqueue the other images. 844 const OatHeader& boot_oat_header = oat_file->GetOatHeader(); 845 const char* boot_cp = boot_oat_header.GetStoreValueByKey(OatHeader::kBootClassPath); 846 if (boot_cp != nullptr) { 847 gc::space::ImageSpace::CreateMultiImageLocations(image_locations[0], 848 boot_cp, 849 &image_locations); 850 } 851 } 852 853 Runtime::Current()->GetOatFileManager().RegisterOatFile(std::move(oat_file)); 854 } 855 return true; 856} 857 858 859static size_t OpenDexFiles(const std::vector<std::string>& dex_filenames, 860 const std::vector<std::string>& dex_locations, 861 const std::string& image_location, 862 std::vector<std::unique_ptr<const DexFile>>* dex_files) { 863 DCHECK(dex_files != nullptr) << "OpenDexFiles: out-param is nullptr"; 864 size_t failure_count = 0; 865 if (!image_location.empty() && OpenDexFilesFromImage(image_location, dex_files, &failure_count)) { 866 return failure_count; 867 } 868 failure_count = 0; 869 for (size_t i = 0; i < dex_filenames.size(); i++) { 870 const char* dex_filename = dex_filenames[i].c_str(); 871 const char* dex_location = dex_locations[i].c_str(); 872 std::string error_msg; 873 if (!OS::FileExists(dex_filename)) { 874 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 875 continue; 876 } 877 if (!DexFile::Open(dex_filename, dex_location, &error_msg, dex_files)) { 878 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 879 ++failure_count; 880 } 881 } 882 return failure_count; 883} 884 885void Runtime::SetSentinel(mirror::Object* sentinel) { 886 CHECK(sentinel_.Read() == nullptr); 887 CHECK(sentinel != nullptr); 888 CHECK(!heap_->IsMovableObject(sentinel)); 889 sentinel_ = GcRoot<mirror::Object>(sentinel); 890} 891 892bool Runtime::Init(RuntimeArgumentMap&& runtime_options_in) { 893 RuntimeArgumentMap runtime_options(std::move(runtime_options_in)); 894 ScopedTrace trace(__FUNCTION__); 895 CHECK_EQ(sysconf(_SC_PAGE_SIZE), kPageSize); 896 897 MemMap::Init(); 898 899 using Opt = RuntimeArgumentMap; 900 VLOG(startup) << "Runtime::Init -verbose:startup enabled"; 901 902 QuasiAtomic::Startup(); 903 904 oat_file_manager_ = new OatFileManager; 905 906 Thread::SetSensitiveThreadHook(runtime_options.GetOrDefault(Opt::HookIsSensitiveThread)); 907 Monitor::Init(runtime_options.GetOrDefault(Opt::LockProfThreshold)); 908 909 boot_class_path_string_ = runtime_options.ReleaseOrDefault(Opt::BootClassPath); 910 class_path_string_ = runtime_options.ReleaseOrDefault(Opt::ClassPath); 911 properties_ = runtime_options.ReleaseOrDefault(Opt::PropertiesList); 912 913 compiler_callbacks_ = runtime_options.GetOrDefault(Opt::CompilerCallbacksPtr); 914 patchoat_executable_ = runtime_options.ReleaseOrDefault(Opt::PatchOat); 915 must_relocate_ = runtime_options.GetOrDefault(Opt::Relocate); 916 is_zygote_ = runtime_options.Exists(Opt::Zygote); 917 is_explicit_gc_disabled_ = runtime_options.Exists(Opt::DisableExplicitGC); 918 dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::Dex2Oat); 919 image_dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::ImageDex2Oat); 920 dump_native_stack_on_sig_quit_ = runtime_options.GetOrDefault(Opt::DumpNativeStackOnSigQuit); 921 922 vfprintf_ = runtime_options.GetOrDefault(Opt::HookVfprintf); 923 exit_ = runtime_options.GetOrDefault(Opt::HookExit); 924 abort_ = runtime_options.GetOrDefault(Opt::HookAbort); 925 926 default_stack_size_ = runtime_options.GetOrDefault(Opt::StackSize); 927 stack_trace_file_ = runtime_options.ReleaseOrDefault(Opt::StackTraceFile); 928 929 compiler_executable_ = runtime_options.ReleaseOrDefault(Opt::Compiler); 930 compiler_options_ = runtime_options.ReleaseOrDefault(Opt::CompilerOptions); 931 image_compiler_options_ = runtime_options.ReleaseOrDefault(Opt::ImageCompilerOptions); 932 image_location_ = runtime_options.GetOrDefault(Opt::Image); 933 934 max_spins_before_thin_lock_inflation_ = 935 runtime_options.GetOrDefault(Opt::MaxSpinsBeforeThinLockInflation); 936 937 monitor_list_ = new MonitorList; 938 monitor_pool_ = MonitorPool::Create(); 939 thread_list_ = new ThreadList; 940 intern_table_ = new InternTable; 941 942 verify_ = runtime_options.GetOrDefault(Opt::Verify); 943 allow_dex_file_fallback_ = !runtime_options.Exists(Opt::NoDexFileFallback); 944 945 no_sig_chain_ = runtime_options.Exists(Opt::NoSigChain); 946 force_native_bridge_ = runtime_options.Exists(Opt::ForceNativeBridge); 947 948 Split(runtime_options.GetOrDefault(Opt::CpuAbiList), ',', &cpu_abilist_); 949 950 fingerprint_ = runtime_options.ReleaseOrDefault(Opt::Fingerprint); 951 952 if (runtime_options.GetOrDefault(Opt::Interpret)) { 953 GetInstrumentation()->ForceInterpretOnly(); 954 } 955 956 zygote_max_failed_boots_ = runtime_options.GetOrDefault(Opt::ZygoteMaxFailedBoots); 957 experimental_flags_ = runtime_options.GetOrDefault(Opt::Experimental); 958 is_low_memory_mode_ = runtime_options.Exists(Opt::LowMemoryMode); 959 960 { 961 CompilerFilter::Filter filter; 962 std::string filter_str = runtime_options.GetOrDefault(Opt::OatFileManagerCompilerFilter); 963 if (!CompilerFilter::ParseCompilerFilter(filter_str.c_str(), &filter)) { 964 LOG(ERROR) << "Cannot parse compiler filter " << filter_str; 965 return false; 966 } 967 OatFileManager::SetCompilerFilter(filter); 968 } 969 970 XGcOption xgc_option = runtime_options.GetOrDefault(Opt::GcOption); 971 heap_ = new gc::Heap(runtime_options.GetOrDefault(Opt::MemoryInitialSize), 972 runtime_options.GetOrDefault(Opt::HeapGrowthLimit), 973 runtime_options.GetOrDefault(Opt::HeapMinFree), 974 runtime_options.GetOrDefault(Opt::HeapMaxFree), 975 runtime_options.GetOrDefault(Opt::HeapTargetUtilization), 976 runtime_options.GetOrDefault(Opt::ForegroundHeapGrowthMultiplier), 977 runtime_options.GetOrDefault(Opt::MemoryMaximumSize), 978 runtime_options.GetOrDefault(Opt::NonMovingSpaceCapacity), 979 runtime_options.GetOrDefault(Opt::Image), 980 runtime_options.GetOrDefault(Opt::ImageInstructionSet), 981 xgc_option.collector_type_, 982 runtime_options.GetOrDefault(Opt::BackgroundGc), 983 runtime_options.GetOrDefault(Opt::LargeObjectSpace), 984 runtime_options.GetOrDefault(Opt::LargeObjectThreshold), 985 runtime_options.GetOrDefault(Opt::ParallelGCThreads), 986 runtime_options.GetOrDefault(Opt::ConcGCThreads), 987 runtime_options.Exists(Opt::LowMemoryMode), 988 runtime_options.GetOrDefault(Opt::LongPauseLogThreshold), 989 runtime_options.GetOrDefault(Opt::LongGCLogThreshold), 990 runtime_options.Exists(Opt::IgnoreMaxFootprint), 991 runtime_options.GetOrDefault(Opt::UseTLAB), 992 xgc_option.verify_pre_gc_heap_, 993 xgc_option.verify_pre_sweeping_heap_, 994 xgc_option.verify_post_gc_heap_, 995 xgc_option.verify_pre_gc_rosalloc_, 996 xgc_option.verify_pre_sweeping_rosalloc_, 997 xgc_option.verify_post_gc_rosalloc_, 998 xgc_option.gcstress_, 999 runtime_options.GetOrDefault(Opt::EnableHSpaceCompactForOOM), 1000 runtime_options.GetOrDefault(Opt::HSpaceCompactForOOMMinIntervalsMs)); 1001 1002 if (!heap_->HasBootImageSpace() && !allow_dex_file_fallback_) { 1003 LOG(ERROR) << "Dex file fallback disabled, cannot continue without image."; 1004 return false; 1005 } 1006 1007 dump_gc_performance_on_shutdown_ = runtime_options.Exists(Opt::DumpGCPerformanceOnShutdown); 1008 1009 if (runtime_options.Exists(Opt::JdwpOptions)) { 1010 Dbg::ConfigureJdwp(runtime_options.GetOrDefault(Opt::JdwpOptions)); 1011 } 1012 1013 jit_options_.reset(jit::JitOptions::CreateFromRuntimeArguments(runtime_options)); 1014 if (IsAotCompiler()) { 1015 // If we are already the compiler at this point, we must be dex2oat. Don't create the jit in 1016 // this case. 1017 // If runtime_options doesn't have UseJIT set to true then CreateFromRuntimeArguments returns 1018 // null and we don't create the jit. 1019 jit_options_->SetUseJIT(false); 1020 } 1021 1022 // Allocate a global table of boxed lambda objects <-> closures. 1023 lambda_box_table_ = MakeUnique<lambda::BoxTable>(); 1024 1025 // Use MemMap arena pool for jit, malloc otherwise. Malloc arenas are faster to allocate but 1026 // can't be trimmed as easily. 1027 const bool use_malloc = IsAotCompiler(); 1028 arena_pool_.reset(new ArenaPool(use_malloc, /* low_4gb */ false)); 1029 jit_arena_pool_.reset( 1030 new ArenaPool(/* use_malloc */ false, /* low_4gb */ false, "CompilerMetadata")); 1031 1032 if (IsAotCompiler() && Is64BitInstructionSet(kRuntimeISA)) { 1033 // 4gb, no malloc. Explanation in header. 1034 low_4gb_arena_pool_.reset(new ArenaPool(/* use_malloc */ false, /* low_4gb */ true)); 1035 } 1036 linear_alloc_.reset(CreateLinearAlloc()); 1037 1038 BlockSignals(); 1039 InitPlatformSignalHandlers(); 1040 1041 // Change the implicit checks flags based on runtime architecture. 1042 switch (kRuntimeISA) { 1043 case kArm: 1044 case kThumb2: 1045 case kX86: 1046 case kArm64: 1047 case kX86_64: 1048 case kMips: 1049 case kMips64: 1050 implicit_null_checks_ = true; 1051 // Installing stack protection does not play well with valgrind. 1052 implicit_so_checks_ = !(RUNNING_ON_MEMORY_TOOL && kMemoryToolIsValgrind); 1053 break; 1054 default: 1055 // Keep the defaults. 1056 break; 1057 } 1058 1059 if (!no_sig_chain_) { 1060 // Dex2Oat's Runtime does not need the signal chain or the fault handler. 1061 1062 // Initialize the signal chain so that any calls to sigaction get 1063 // correctly routed to the next in the chain regardless of whether we 1064 // have claimed the signal or not. 1065 InitializeSignalChain(); 1066 1067 if (implicit_null_checks_ || implicit_so_checks_ || implicit_suspend_checks_) { 1068 fault_manager.Init(); 1069 1070 // These need to be in a specific order. The null point check handler must be 1071 // after the suspend check and stack overflow check handlers. 1072 // 1073 // Note: the instances attach themselves to the fault manager and are handled by it. The manager 1074 // will delete the instance on Shutdown(). 1075 if (implicit_suspend_checks_) { 1076 new SuspensionHandler(&fault_manager); 1077 } 1078 1079 if (implicit_so_checks_) { 1080 new StackOverflowHandler(&fault_manager); 1081 } 1082 1083 if (implicit_null_checks_) { 1084 new NullPointerHandler(&fault_manager); 1085 } 1086 1087 if (kEnableJavaStackTraceHandler) { 1088 new JavaStackTraceHandler(&fault_manager); 1089 } 1090 } 1091 } 1092 1093 java_vm_ = new JavaVMExt(this, runtime_options); 1094 1095 Thread::Startup(); 1096 1097 // ClassLinker needs an attached thread, but we can't fully attach a thread without creating 1098 // objects. We can't supply a thread group yet; it will be fixed later. Since we are the main 1099 // thread, we do not get a java peer. 1100 Thread* self = Thread::Attach("main", false, nullptr, false); 1101 CHECK_EQ(self->GetThreadId(), ThreadList::kMainThreadId); 1102 CHECK(self != nullptr); 1103 1104 // Set us to runnable so tools using a runtime can allocate and GC by default 1105 self->TransitionFromSuspendedToRunnable(); 1106 1107 // Now we're attached, we can take the heap locks and validate the heap. 1108 GetHeap()->EnableObjectValidation(); 1109 1110 CHECK_GE(GetHeap()->GetContinuousSpaces().size(), 1U); 1111 class_linker_ = new ClassLinker(intern_table_); 1112 if (GetHeap()->HasBootImageSpace()) { 1113 std::string error_msg; 1114 bool result = class_linker_->InitFromBootImage(&error_msg); 1115 if (!result) { 1116 LOG(ERROR) << "Could not initialize from image: " << error_msg; 1117 return false; 1118 } 1119 if (kIsDebugBuild) { 1120 for (auto image_space : GetHeap()->GetBootImageSpaces()) { 1121 image_space->VerifyImageAllocations(); 1122 } 1123 } 1124 if (boot_class_path_string_.empty()) { 1125 // The bootclasspath is not explicitly specified: construct it from the loaded dex files. 1126 const std::vector<const DexFile*>& boot_class_path = GetClassLinker()->GetBootClassPath(); 1127 std::vector<std::string> dex_locations; 1128 dex_locations.reserve(boot_class_path.size()); 1129 for (const DexFile* dex_file : boot_class_path) { 1130 dex_locations.push_back(dex_file->GetLocation()); 1131 } 1132 boot_class_path_string_ = Join(dex_locations, ':'); 1133 } 1134 { 1135 ScopedTrace trace2("AddImageStringsToTable"); 1136 GetInternTable()->AddImagesStringsToTable(heap_->GetBootImageSpaces()); 1137 } 1138 { 1139 ScopedTrace trace2("MoveImageClassesToClassTable"); 1140 GetClassLinker()->AddBootImageClassesToClassTable(); 1141 } 1142 } else { 1143 std::vector<std::string> dex_filenames; 1144 Split(boot_class_path_string_, ':', &dex_filenames); 1145 1146 std::vector<std::string> dex_locations; 1147 if (!runtime_options.Exists(Opt::BootClassPathLocations)) { 1148 dex_locations = dex_filenames; 1149 } else { 1150 dex_locations = runtime_options.GetOrDefault(Opt::BootClassPathLocations); 1151 CHECK_EQ(dex_filenames.size(), dex_locations.size()); 1152 } 1153 1154 std::vector<std::unique_ptr<const DexFile>> boot_class_path; 1155 if (runtime_options.Exists(Opt::BootClassPathDexList)) { 1156 boot_class_path.swap(*runtime_options.GetOrDefault(Opt::BootClassPathDexList)); 1157 } else { 1158 OpenDexFiles(dex_filenames, 1159 dex_locations, 1160 runtime_options.GetOrDefault(Opt::Image), 1161 &boot_class_path); 1162 } 1163 instruction_set_ = runtime_options.GetOrDefault(Opt::ImageInstructionSet); 1164 std::string error_msg; 1165 if (!class_linker_->InitWithoutImage(std::move(boot_class_path), &error_msg)) { 1166 LOG(ERROR) << "Could not initialize without image: " << error_msg; 1167 return false; 1168 } 1169 1170 // TODO: Should we move the following to InitWithoutImage? 1171 SetInstructionSet(instruction_set_); 1172 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 1173 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 1174 if (!HasCalleeSaveMethod(type)) { 1175 SetCalleeSaveMethod(CreateCalleeSaveMethod(), type); 1176 } 1177 } 1178 } 1179 1180 CHECK(class_linker_ != nullptr); 1181 1182 verifier::MethodVerifier::Init(); 1183 1184 if (runtime_options.Exists(Opt::MethodTrace)) { 1185 trace_config_.reset(new TraceConfig()); 1186 trace_config_->trace_file = runtime_options.ReleaseOrDefault(Opt::MethodTraceFile); 1187 trace_config_->trace_file_size = runtime_options.ReleaseOrDefault(Opt::MethodTraceFileSize); 1188 trace_config_->trace_mode = Trace::TraceMode::kMethodTracing; 1189 trace_config_->trace_output_mode = runtime_options.Exists(Opt::MethodTraceStreaming) ? 1190 Trace::TraceOutputMode::kStreaming : 1191 Trace::TraceOutputMode::kFile; 1192 } 1193 1194 { 1195 auto&& profiler_options = runtime_options.ReleaseOrDefault(Opt::ProfilerOpts); 1196 profile_output_filename_ = profiler_options.output_file_name_; 1197 1198 // TODO: Don't do this, just change ProfilerOptions to include the output file name? 1199 ProfilerOptions other_options( 1200 profiler_options.enabled_, 1201 profiler_options.period_s_, 1202 profiler_options.duration_s_, 1203 profiler_options.interval_us_, 1204 profiler_options.backoff_coefficient_, 1205 profiler_options.start_immediately_, 1206 profiler_options.top_k_threshold_, 1207 profiler_options.top_k_change_threshold_, 1208 profiler_options.profile_type_, 1209 profiler_options.max_stack_depth_); 1210 1211 profiler_options_ = other_options; 1212 } 1213 1214 // TODO: move this to just be an Trace::Start argument 1215 Trace::SetDefaultClockSource(runtime_options.GetOrDefault(Opt::ProfileClock)); 1216 1217 // Pre-allocate an OutOfMemoryError for the double-OOME case. 1218 self->ThrowNewException("Ljava/lang/OutOfMemoryError;", 1219 "OutOfMemoryError thrown while trying to throw OutOfMemoryError; " 1220 "no stack trace available"); 1221 pre_allocated_OutOfMemoryError_ = GcRoot<mirror::Throwable>(self->GetException()); 1222 self->ClearException(); 1223 1224 // Pre-allocate a NoClassDefFoundError for the common case of failing to find a system class 1225 // ahead of checking the application's class loader. 1226 self->ThrowNewException("Ljava/lang/NoClassDefFoundError;", 1227 "Class not found using the boot class loader; no stack trace available"); 1228 pre_allocated_NoClassDefFoundError_ = GcRoot<mirror::Throwable>(self->GetException()); 1229 self->ClearException(); 1230 1231 // Look for a native bridge. 1232 // 1233 // The intended flow here is, in the case of a running system: 1234 // 1235 // Runtime::Init() (zygote): 1236 // LoadNativeBridge -> dlopen from cmd line parameter. 1237 // | 1238 // V 1239 // Runtime::Start() (zygote): 1240 // No-op wrt native bridge. 1241 // | 1242 // | start app 1243 // V 1244 // DidForkFromZygote(action) 1245 // action = kUnload -> dlclose native bridge. 1246 // action = kInitialize -> initialize library 1247 // 1248 // 1249 // The intended flow here is, in the case of a simple dalvikvm call: 1250 // 1251 // Runtime::Init(): 1252 // LoadNativeBridge -> dlopen from cmd line parameter. 1253 // | 1254 // V 1255 // Runtime::Start(): 1256 // DidForkFromZygote(kInitialize) -> try to initialize any native bridge given. 1257 // No-op wrt native bridge. 1258 { 1259 std::string native_bridge_file_name = runtime_options.ReleaseOrDefault(Opt::NativeBridge); 1260 is_native_bridge_loaded_ = LoadNativeBridge(native_bridge_file_name); 1261 } 1262 1263 VLOG(startup) << "Runtime::Init exiting"; 1264 1265 return true; 1266} 1267 1268void Runtime::InitNativeMethods() { 1269 VLOG(startup) << "Runtime::InitNativeMethods entering"; 1270 Thread* self = Thread::Current(); 1271 JNIEnv* env = self->GetJniEnv(); 1272 1273 // Must be in the kNative state for calling native methods (JNI_OnLoad code). 1274 CHECK_EQ(self->GetState(), kNative); 1275 1276 // First set up JniConstants, which is used by both the runtime's built-in native 1277 // methods and libcore. 1278 JniConstants::init(env); 1279 1280 // Then set up the native methods provided by the runtime itself. 1281 RegisterRuntimeNativeMethods(env); 1282 1283 // Initialize classes used in JNI. The initialization requires runtime native 1284 // methods to be loaded first. 1285 WellKnownClasses::Init(env); 1286 1287 // Then set up libjavacore / libopenjdk, which are just a regular JNI libraries with 1288 // a regular JNI_OnLoad. Most JNI libraries can just use System.loadLibrary, but 1289 // libcore can't because it's the library that implements System.loadLibrary! 1290 { 1291 std::string error_msg; 1292 if (!java_vm_->LoadNativeLibrary(env, "libjavacore.so", nullptr, nullptr, &error_msg)) { 1293 LOG(FATAL) << "LoadNativeLibrary failed for \"libjavacore.so\": " << error_msg; 1294 } 1295 } 1296 { 1297 constexpr const char* kOpenJdkLibrary = kIsDebugBuild 1298 ? "libopenjdkd.so" 1299 : "libopenjdk.so"; 1300 std::string error_msg; 1301 if (!java_vm_->LoadNativeLibrary(env, kOpenJdkLibrary, nullptr, nullptr, &error_msg)) { 1302 LOG(FATAL) << "LoadNativeLibrary failed for \"" << kOpenJdkLibrary << "\": " << error_msg; 1303 } 1304 } 1305 1306 // Initialize well known classes that may invoke runtime native methods. 1307 WellKnownClasses::LateInit(env); 1308 1309 VLOG(startup) << "Runtime::InitNativeMethods exiting"; 1310} 1311 1312void Runtime::ReclaimArenaPoolMemory() { 1313 arena_pool_->LockReclaimMemory(); 1314} 1315 1316void Runtime::InitThreadGroups(Thread* self) { 1317 JNIEnvExt* env = self->GetJniEnv(); 1318 ScopedJniEnvLocalRefState env_state(env); 1319 main_thread_group_ = 1320 env->NewGlobalRef(env->GetStaticObjectField( 1321 WellKnownClasses::java_lang_ThreadGroup, 1322 WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup)); 1323 CHECK(main_thread_group_ != nullptr || IsAotCompiler()); 1324 system_thread_group_ = 1325 env->NewGlobalRef(env->GetStaticObjectField( 1326 WellKnownClasses::java_lang_ThreadGroup, 1327 WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup)); 1328 CHECK(system_thread_group_ != nullptr || IsAotCompiler()); 1329} 1330 1331jobject Runtime::GetMainThreadGroup() const { 1332 CHECK(main_thread_group_ != nullptr || IsAotCompiler()); 1333 return main_thread_group_; 1334} 1335 1336jobject Runtime::GetSystemThreadGroup() const { 1337 CHECK(system_thread_group_ != nullptr || IsAotCompiler()); 1338 return system_thread_group_; 1339} 1340 1341jobject Runtime::GetSystemClassLoader() const { 1342 CHECK(system_class_loader_ != nullptr || IsAotCompiler()); 1343 return system_class_loader_; 1344} 1345 1346void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) { 1347 register_dalvik_system_DexFile(env); 1348 register_dalvik_system_VMDebug(env); 1349 register_dalvik_system_VMRuntime(env); 1350 register_dalvik_system_VMStack(env); 1351 register_dalvik_system_ZygoteHooks(env); 1352 register_java_lang_Class(env); 1353 register_java_lang_DexCache(env); 1354 register_java_lang_Object(env); 1355 register_java_lang_ref_FinalizerReference(env); 1356 register_java_lang_reflect_AbstractMethod(env); 1357 register_java_lang_reflect_Array(env); 1358 register_java_lang_reflect_Constructor(env); 1359 register_java_lang_reflect_Field(env); 1360 register_java_lang_reflect_Method(env); 1361 register_java_lang_reflect_Proxy(env); 1362 register_java_lang_ref_Reference(env); 1363 register_java_lang_String(env); 1364 register_java_lang_StringFactory(env); 1365 register_java_lang_System(env); 1366 register_java_lang_Thread(env); 1367 register_java_lang_Throwable(env); 1368 register_java_lang_VMClassLoader(env); 1369 register_java_util_concurrent_atomic_AtomicLong(env); 1370 register_libcore_util_CharsetUtils(env); 1371 register_org_apache_harmony_dalvik_ddmc_DdmServer(env); 1372 register_org_apache_harmony_dalvik_ddmc_DdmVmInternal(env); 1373 register_sun_misc_Unsafe(env); 1374} 1375 1376void Runtime::DumpForSigQuit(std::ostream& os) { 1377 // Dumping for SIGQIT may cause deadlocks if the the debugger is active. b/26118154 1378 if (Dbg::IsDebuggerActive()) { 1379 LOG(INFO) << "Skipping DumpForSigQuit due to active debugger"; 1380 return; 1381 } 1382 GetClassLinker()->DumpForSigQuit(os); 1383 GetInternTable()->DumpForSigQuit(os); 1384 GetJavaVM()->DumpForSigQuit(os); 1385 GetHeap()->DumpForSigQuit(os); 1386 oat_file_manager_->DumpForSigQuit(os); 1387 if (GetJit() != nullptr) { 1388 GetJit()->DumpForSigQuit(os); 1389 } else { 1390 os << "Running non JIT\n"; 1391 } 1392 TrackedAllocators::Dump(os); 1393 os << "\n"; 1394 1395 thread_list_->DumpForSigQuit(os); 1396 BaseMutex::DumpAll(os); 1397} 1398 1399void Runtime::DumpLockHolders(std::ostream& os) { 1400 uint64_t mutator_lock_owner = Locks::mutator_lock_->GetExclusiveOwnerTid(); 1401 pid_t thread_list_lock_owner = GetThreadList()->GetLockOwner(); 1402 pid_t classes_lock_owner = GetClassLinker()->GetClassesLockOwner(); 1403 pid_t dex_lock_owner = GetClassLinker()->GetDexLockOwner(); 1404 if ((thread_list_lock_owner | classes_lock_owner | dex_lock_owner) != 0) { 1405 os << "Mutator lock exclusive owner tid: " << mutator_lock_owner << "\n" 1406 << "ThreadList lock owner tid: " << thread_list_lock_owner << "\n" 1407 << "ClassLinker classes lock owner tid: " << classes_lock_owner << "\n" 1408 << "ClassLinker dex lock owner tid: " << dex_lock_owner << "\n"; 1409 } 1410} 1411 1412void Runtime::SetStatsEnabled(bool new_state) { 1413 Thread* self = Thread::Current(); 1414 MutexLock mu(self, *Locks::instrument_entrypoints_lock_); 1415 if (new_state == true) { 1416 GetStats()->Clear(~0); 1417 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1418 self->GetStats()->Clear(~0); 1419 if (stats_enabled_ != new_state) { 1420 GetInstrumentation()->InstrumentQuickAllocEntryPointsLocked(); 1421 } 1422 } else if (stats_enabled_ != new_state) { 1423 GetInstrumentation()->UninstrumentQuickAllocEntryPointsLocked(); 1424 } 1425 stats_enabled_ = new_state; 1426} 1427 1428void Runtime::ResetStats(int kinds) { 1429 GetStats()->Clear(kinds & 0xffff); 1430 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1431 Thread::Current()->GetStats()->Clear(kinds >> 16); 1432} 1433 1434int32_t Runtime::GetStat(int kind) { 1435 RuntimeStats* stats; 1436 if (kind < (1<<16)) { 1437 stats = GetStats(); 1438 } else { 1439 stats = Thread::Current()->GetStats(); 1440 kind >>= 16; 1441 } 1442 switch (kind) { 1443 case KIND_ALLOCATED_OBJECTS: 1444 return stats->allocated_objects; 1445 case KIND_ALLOCATED_BYTES: 1446 return stats->allocated_bytes; 1447 case KIND_FREED_OBJECTS: 1448 return stats->freed_objects; 1449 case KIND_FREED_BYTES: 1450 return stats->freed_bytes; 1451 case KIND_GC_INVOCATIONS: 1452 return stats->gc_for_alloc_count; 1453 case KIND_CLASS_INIT_COUNT: 1454 return stats->class_init_count; 1455 case KIND_CLASS_INIT_TIME: 1456 // Convert ns to us, reduce to 32 bits. 1457 return static_cast<int>(stats->class_init_time_ns / 1000); 1458 case KIND_EXT_ALLOCATED_OBJECTS: 1459 case KIND_EXT_ALLOCATED_BYTES: 1460 case KIND_EXT_FREED_OBJECTS: 1461 case KIND_EXT_FREED_BYTES: 1462 return 0; // backward compatibility 1463 default: 1464 LOG(FATAL) << "Unknown statistic " << kind; 1465 return -1; // unreachable 1466 } 1467} 1468 1469void Runtime::BlockSignals() { 1470 SignalSet signals; 1471 signals.Add(SIGPIPE); 1472 // SIGQUIT is used to dump the runtime's state (including stack traces). 1473 signals.Add(SIGQUIT); 1474 // SIGUSR1 is used to initiate a GC. 1475 signals.Add(SIGUSR1); 1476 signals.Block(); 1477} 1478 1479bool Runtime::AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group, 1480 bool create_peer) { 1481 ScopedTrace trace(__FUNCTION__); 1482 return Thread::Attach(thread_name, as_daemon, thread_group, create_peer) != nullptr; 1483} 1484 1485void Runtime::DetachCurrentThread() { 1486 ScopedTrace trace(__FUNCTION__); 1487 Thread* self = Thread::Current(); 1488 if (self == nullptr) { 1489 LOG(FATAL) << "attempting to detach thread that is not attached"; 1490 } 1491 if (self->HasManagedStack()) { 1492 LOG(FATAL) << *Thread::Current() << " attempting to detach while still running code"; 1493 } 1494 thread_list_->Unregister(self); 1495} 1496 1497mirror::Throwable* Runtime::GetPreAllocatedOutOfMemoryError() { 1498 mirror::Throwable* oome = pre_allocated_OutOfMemoryError_.Read(); 1499 if (oome == nullptr) { 1500 LOG(ERROR) << "Failed to return pre-allocated OOME"; 1501 } 1502 return oome; 1503} 1504 1505mirror::Throwable* Runtime::GetPreAllocatedNoClassDefFoundError() { 1506 mirror::Throwable* ncdfe = pre_allocated_NoClassDefFoundError_.Read(); 1507 if (ncdfe == nullptr) { 1508 LOG(ERROR) << "Failed to return pre-allocated NoClassDefFoundError"; 1509 } 1510 return ncdfe; 1511} 1512 1513void Runtime::VisitConstantRoots(RootVisitor* visitor) { 1514 // Visit the classes held as static in mirror classes, these can be visited concurrently and only 1515 // need to be visited once per GC since they never change. 1516 mirror::Class::VisitRoots(visitor); 1517 mirror::Constructor::VisitRoots(visitor); 1518 mirror::Reference::VisitRoots(visitor); 1519 mirror::Method::VisitRoots(visitor); 1520 mirror::StackTraceElement::VisitRoots(visitor); 1521 mirror::String::VisitRoots(visitor); 1522 mirror::Throwable::VisitRoots(visitor); 1523 mirror::Field::VisitRoots(visitor); 1524 // Visit all the primitive array types classes. 1525 mirror::PrimitiveArray<uint8_t>::VisitRoots(visitor); // BooleanArray 1526 mirror::PrimitiveArray<int8_t>::VisitRoots(visitor); // ByteArray 1527 mirror::PrimitiveArray<uint16_t>::VisitRoots(visitor); // CharArray 1528 mirror::PrimitiveArray<double>::VisitRoots(visitor); // DoubleArray 1529 mirror::PrimitiveArray<float>::VisitRoots(visitor); // FloatArray 1530 mirror::PrimitiveArray<int32_t>::VisitRoots(visitor); // IntArray 1531 mirror::PrimitiveArray<int64_t>::VisitRoots(visitor); // LongArray 1532 mirror::PrimitiveArray<int16_t>::VisitRoots(visitor); // ShortArray 1533 // Visiting the roots of these ArtMethods is not currently required since all the GcRoots are 1534 // null. 1535 BufferedRootVisitor<16> buffered_visitor(visitor, RootInfo(kRootVMInternal)); 1536 const size_t pointer_size = GetClassLinker()->GetImagePointerSize(); 1537 if (HasResolutionMethod()) { 1538 resolution_method_->VisitRoots(buffered_visitor, pointer_size); 1539 } 1540 if (HasImtConflictMethod()) { 1541 imt_conflict_method_->VisitRoots(buffered_visitor, pointer_size); 1542 } 1543 if (imt_unimplemented_method_ != nullptr) { 1544 imt_unimplemented_method_->VisitRoots(buffered_visitor, pointer_size); 1545 } 1546 for (size_t i = 0; i < kLastCalleeSaveType; ++i) { 1547 auto* m = reinterpret_cast<ArtMethod*>(callee_save_methods_[i]); 1548 if (m != nullptr) { 1549 m->VisitRoots(buffered_visitor, pointer_size); 1550 } 1551 } 1552} 1553 1554void Runtime::VisitConcurrentRoots(RootVisitor* visitor, VisitRootFlags flags) { 1555 intern_table_->VisitRoots(visitor, flags); 1556 class_linker_->VisitRoots(visitor, flags); 1557 heap_->VisitAllocationRecords(visitor); 1558 if ((flags & kVisitRootFlagNewRoots) == 0) { 1559 // Guaranteed to have no new roots in the constant roots. 1560 VisitConstantRoots(visitor); 1561 } 1562 Dbg::VisitRoots(visitor); 1563} 1564 1565void Runtime::VisitTransactionRoots(RootVisitor* visitor) { 1566 if (preinitialization_transaction_ != nullptr) { 1567 preinitialization_transaction_->VisitRoots(visitor); 1568 } 1569} 1570 1571void Runtime::VisitNonThreadRoots(RootVisitor* visitor) { 1572 java_vm_->VisitRoots(visitor); 1573 sentinel_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1574 pre_allocated_OutOfMemoryError_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1575 pre_allocated_NoClassDefFoundError_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1576 verifier::MethodVerifier::VisitStaticRoots(visitor); 1577 VisitTransactionRoots(visitor); 1578} 1579 1580void Runtime::VisitNonConcurrentRoots(RootVisitor* visitor) { 1581 thread_list_->VisitRoots(visitor); 1582 VisitNonThreadRoots(visitor); 1583} 1584 1585void Runtime::VisitThreadRoots(RootVisitor* visitor) { 1586 thread_list_->VisitRoots(visitor); 1587} 1588 1589size_t Runtime::FlipThreadRoots(Closure* thread_flip_visitor, Closure* flip_callback, 1590 gc::collector::GarbageCollector* collector) { 1591 return thread_list_->FlipThreadRoots(thread_flip_visitor, flip_callback, collector); 1592} 1593 1594void Runtime::VisitRoots(RootVisitor* visitor, VisitRootFlags flags) { 1595 VisitNonConcurrentRoots(visitor); 1596 VisitConcurrentRoots(visitor, flags); 1597} 1598 1599void Runtime::VisitImageRoots(RootVisitor* visitor) { 1600 for (auto* space : GetHeap()->GetContinuousSpaces()) { 1601 if (space->IsImageSpace()) { 1602 auto* image_space = space->AsImageSpace(); 1603 const auto& image_header = image_space->GetImageHeader(); 1604 for (size_t i = 0; i < ImageHeader::kImageRootsMax; ++i) { 1605 auto* obj = image_header.GetImageRoot(static_cast<ImageHeader::ImageRoot>(i)); 1606 if (obj != nullptr) { 1607 auto* after_obj = obj; 1608 visitor->VisitRoot(&after_obj, RootInfo(kRootStickyClass)); 1609 CHECK_EQ(after_obj, obj); 1610 } 1611 } 1612 } 1613 } 1614} 1615 1616ArtMethod* Runtime::CreateImtConflictMethod(LinearAlloc* linear_alloc) { 1617 ClassLinker* const class_linker = GetClassLinker(); 1618 ArtMethod* method = class_linker->CreateRuntimeMethod(linear_alloc); 1619 // When compiling, the code pointer will get set later when the image is loaded. 1620 const size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1621 if (IsAotCompiler()) { 1622 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1623 } else { 1624 method->SetEntryPointFromQuickCompiledCode(GetQuickImtConflictStub()); 1625 } 1626 // Create empty conflict table. 1627 method->SetImtConflictTable(class_linker->CreateImtConflictTable(/*count*/0u, linear_alloc), 1628 pointer_size); 1629 return method; 1630} 1631 1632void Runtime::SetImtConflictMethod(ArtMethod* method) { 1633 CHECK(method != nullptr); 1634 CHECK(method->IsRuntimeMethod()); 1635 imt_conflict_method_ = method; 1636} 1637 1638ArtMethod* Runtime::CreateResolutionMethod() { 1639 auto* method = GetClassLinker()->CreateRuntimeMethod(GetLinearAlloc()); 1640 // When compiling, the code pointer will get set later when the image is loaded. 1641 if (IsAotCompiler()) { 1642 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1643 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1644 } else { 1645 method->SetEntryPointFromQuickCompiledCode(GetQuickResolutionStub()); 1646 } 1647 return method; 1648} 1649 1650ArtMethod* Runtime::CreateCalleeSaveMethod() { 1651 auto* method = GetClassLinker()->CreateRuntimeMethod(GetLinearAlloc()); 1652 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1653 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1654 DCHECK_NE(instruction_set_, kNone); 1655 DCHECK(method->IsRuntimeMethod()); 1656 return method; 1657} 1658 1659void Runtime::DisallowNewSystemWeaks() { 1660 CHECK(!kUseReadBarrier); 1661 monitor_list_->DisallowNewMonitors(); 1662 intern_table_->ChangeWeakRootState(gc::kWeakRootStateNoReadsOrWrites); 1663 java_vm_->DisallowNewWeakGlobals(); 1664 heap_->DisallowNewAllocationRecords(); 1665 lambda_box_table_->DisallowNewWeakBoxedLambdas(); 1666} 1667 1668void Runtime::AllowNewSystemWeaks() { 1669 CHECK(!kUseReadBarrier); 1670 monitor_list_->AllowNewMonitors(); 1671 intern_table_->ChangeWeakRootState(gc::kWeakRootStateNormal); // TODO: Do this in the sweeping. 1672 java_vm_->AllowNewWeakGlobals(); 1673 heap_->AllowNewAllocationRecords(); 1674 lambda_box_table_->AllowNewWeakBoxedLambdas(); 1675} 1676 1677void Runtime::BroadcastForNewSystemWeaks() { 1678 // This is used for the read barrier case that uses the thread-local 1679 // Thread::GetWeakRefAccessEnabled() flag. 1680 CHECK(kUseReadBarrier); 1681 monitor_list_->BroadcastForNewMonitors(); 1682 intern_table_->BroadcastForNewInterns(); 1683 java_vm_->BroadcastForNewWeakGlobals(); 1684 heap_->BroadcastForNewAllocationRecords(); 1685 lambda_box_table_->BroadcastForNewWeakBoxedLambdas(); 1686} 1687 1688void Runtime::SetInstructionSet(InstructionSet instruction_set) { 1689 instruction_set_ = instruction_set; 1690 if ((instruction_set_ == kThumb2) || (instruction_set_ == kArm)) { 1691 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1692 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1693 callee_save_method_frame_infos_[i] = arm::ArmCalleeSaveMethodFrameInfo(type); 1694 } 1695 } else if (instruction_set_ == kMips) { 1696 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1697 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1698 callee_save_method_frame_infos_[i] = mips::MipsCalleeSaveMethodFrameInfo(type); 1699 } 1700 } else if (instruction_set_ == kMips64) { 1701 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1702 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1703 callee_save_method_frame_infos_[i] = mips64::Mips64CalleeSaveMethodFrameInfo(type); 1704 } 1705 } else if (instruction_set_ == kX86) { 1706 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1707 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1708 callee_save_method_frame_infos_[i] = x86::X86CalleeSaveMethodFrameInfo(type); 1709 } 1710 } else if (instruction_set_ == kX86_64) { 1711 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1712 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1713 callee_save_method_frame_infos_[i] = x86_64::X86_64CalleeSaveMethodFrameInfo(type); 1714 } 1715 } else if (instruction_set_ == kArm64) { 1716 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1717 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1718 callee_save_method_frame_infos_[i] = arm64::Arm64CalleeSaveMethodFrameInfo(type); 1719 } 1720 } else { 1721 UNIMPLEMENTED(FATAL) << instruction_set_; 1722 } 1723} 1724 1725void Runtime::SetCalleeSaveMethod(ArtMethod* method, CalleeSaveType type) { 1726 DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType)); 1727 CHECK(method != nullptr); 1728 callee_save_methods_[type] = reinterpret_cast<uintptr_t>(method); 1729} 1730 1731void Runtime::RegisterAppInfo(const std::vector<std::string>& code_paths, 1732 const std::string& profile_output_filename, 1733 const std::string& foreign_dex_profile_path, 1734 const std::string& app_dir) { 1735 if (jit_.get() == nullptr) { 1736 // We are not JITing. Nothing to do. 1737 return; 1738 } 1739 1740 VLOG(profiler) << "Register app with " << profile_output_filename 1741 << " " << Join(code_paths, ':'); 1742 1743 if (profile_output_filename.empty()) { 1744 LOG(WARNING) << "JIT profile information will not be recorded: profile filename is empty."; 1745 return; 1746 } 1747 if (!FileExists(profile_output_filename)) { 1748 LOG(WARNING) << "JIT profile information will not be recorded: profile file does not exits."; 1749 return; 1750 } 1751 if (code_paths.empty()) { 1752 LOG(WARNING) << "JIT profile information will not be recorded: code paths is empty."; 1753 return; 1754 } 1755 1756 profile_output_filename_ = profile_output_filename; 1757 jit_->StartProfileSaver(profile_output_filename, 1758 code_paths, 1759 foreign_dex_profile_path, 1760 app_dir); 1761} 1762 1763void Runtime::NotifyDexLoaded(const std::string& dex_location) { 1764 VLOG(profiler) << "Notify dex loaded: " << dex_location; 1765 // We know that if the ProfileSaver is started then we can record profile information. 1766 if (ProfileSaver::IsStarted()) { 1767 ProfileSaver::NotifyDexUse(dex_location); 1768 } 1769} 1770 1771// Transaction support. 1772void Runtime::EnterTransactionMode(Transaction* transaction) { 1773 DCHECK(IsAotCompiler()); 1774 DCHECK(transaction != nullptr); 1775 DCHECK(!IsActiveTransaction()); 1776 preinitialization_transaction_ = transaction; 1777} 1778 1779void Runtime::ExitTransactionMode() { 1780 DCHECK(IsAotCompiler()); 1781 DCHECK(IsActiveTransaction()); 1782 preinitialization_transaction_ = nullptr; 1783} 1784 1785bool Runtime::IsTransactionAborted() const { 1786 if (!IsActiveTransaction()) { 1787 return false; 1788 } else { 1789 DCHECK(IsAotCompiler()); 1790 return preinitialization_transaction_->IsAborted(); 1791 } 1792} 1793 1794void Runtime::AbortTransactionAndThrowAbortError(Thread* self, const std::string& abort_message) { 1795 DCHECK(IsAotCompiler()); 1796 DCHECK(IsActiveTransaction()); 1797 // Throwing an exception may cause its class initialization. If we mark the transaction 1798 // aborted before that, we may warn with a false alarm. Throwing the exception before 1799 // marking the transaction aborted avoids that. 1800 preinitialization_transaction_->ThrowAbortError(self, &abort_message); 1801 preinitialization_transaction_->Abort(abort_message); 1802} 1803 1804void Runtime::ThrowTransactionAbortError(Thread* self) { 1805 DCHECK(IsAotCompiler()); 1806 DCHECK(IsActiveTransaction()); 1807 // Passing nullptr means we rethrow an exception with the earlier transaction abort message. 1808 preinitialization_transaction_->ThrowAbortError(self, nullptr); 1809} 1810 1811void Runtime::RecordWriteFieldBoolean(mirror::Object* obj, MemberOffset field_offset, 1812 uint8_t value, bool is_volatile) const { 1813 DCHECK(IsAotCompiler()); 1814 DCHECK(IsActiveTransaction()); 1815 preinitialization_transaction_->RecordWriteFieldBoolean(obj, field_offset, value, is_volatile); 1816} 1817 1818void Runtime::RecordWriteFieldByte(mirror::Object* obj, MemberOffset field_offset, 1819 int8_t value, bool is_volatile) const { 1820 DCHECK(IsAotCompiler()); 1821 DCHECK(IsActiveTransaction()); 1822 preinitialization_transaction_->RecordWriteFieldByte(obj, field_offset, value, is_volatile); 1823} 1824 1825void Runtime::RecordWriteFieldChar(mirror::Object* obj, MemberOffset field_offset, 1826 uint16_t value, bool is_volatile) const { 1827 DCHECK(IsAotCompiler()); 1828 DCHECK(IsActiveTransaction()); 1829 preinitialization_transaction_->RecordWriteFieldChar(obj, field_offset, value, is_volatile); 1830} 1831 1832void Runtime::RecordWriteFieldShort(mirror::Object* obj, MemberOffset field_offset, 1833 int16_t value, bool is_volatile) const { 1834 DCHECK(IsAotCompiler()); 1835 DCHECK(IsActiveTransaction()); 1836 preinitialization_transaction_->RecordWriteFieldShort(obj, field_offset, value, is_volatile); 1837} 1838 1839void Runtime::RecordWriteField32(mirror::Object* obj, MemberOffset field_offset, 1840 uint32_t value, bool is_volatile) const { 1841 DCHECK(IsAotCompiler()); 1842 DCHECK(IsActiveTransaction()); 1843 preinitialization_transaction_->RecordWriteField32(obj, field_offset, value, is_volatile); 1844} 1845 1846void Runtime::RecordWriteField64(mirror::Object* obj, MemberOffset field_offset, 1847 uint64_t value, bool is_volatile) const { 1848 DCHECK(IsAotCompiler()); 1849 DCHECK(IsActiveTransaction()); 1850 preinitialization_transaction_->RecordWriteField64(obj, field_offset, value, is_volatile); 1851} 1852 1853void Runtime::RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset, 1854 mirror::Object* value, bool is_volatile) const { 1855 DCHECK(IsAotCompiler()); 1856 DCHECK(IsActiveTransaction()); 1857 preinitialization_transaction_->RecordWriteFieldReference(obj, field_offset, value, is_volatile); 1858} 1859 1860void Runtime::RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const { 1861 DCHECK(IsAotCompiler()); 1862 DCHECK(IsActiveTransaction()); 1863 preinitialization_transaction_->RecordWriteArray(array, index, value); 1864} 1865 1866void Runtime::RecordStrongStringInsertion(mirror::String* s) const { 1867 DCHECK(IsAotCompiler()); 1868 DCHECK(IsActiveTransaction()); 1869 preinitialization_transaction_->RecordStrongStringInsertion(s); 1870} 1871 1872void Runtime::RecordWeakStringInsertion(mirror::String* s) const { 1873 DCHECK(IsAotCompiler()); 1874 DCHECK(IsActiveTransaction()); 1875 preinitialization_transaction_->RecordWeakStringInsertion(s); 1876} 1877 1878void Runtime::RecordStrongStringRemoval(mirror::String* s) const { 1879 DCHECK(IsAotCompiler()); 1880 DCHECK(IsActiveTransaction()); 1881 preinitialization_transaction_->RecordStrongStringRemoval(s); 1882} 1883 1884void Runtime::RecordWeakStringRemoval(mirror::String* s) const { 1885 DCHECK(IsAotCompiler()); 1886 DCHECK(IsActiveTransaction()); 1887 preinitialization_transaction_->RecordWeakStringRemoval(s); 1888} 1889 1890void Runtime::SetFaultMessage(const std::string& message) { 1891 MutexLock mu(Thread::Current(), fault_message_lock_); 1892 fault_message_ = message; 1893} 1894 1895void Runtime::AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* argv) 1896 const { 1897 if (GetInstrumentation()->InterpretOnly()) { 1898 argv->push_back("--compiler-filter=interpret-only"); 1899 } 1900 1901 // Make the dex2oat instruction set match that of the launching runtime. If we have multiple 1902 // architecture support, dex2oat may be compiled as a different instruction-set than that 1903 // currently being executed. 1904 std::string instruction_set("--instruction-set="); 1905 instruction_set += GetInstructionSetString(kRuntimeISA); 1906 argv->push_back(instruction_set); 1907 1908 std::unique_ptr<const InstructionSetFeatures> features(InstructionSetFeatures::FromCppDefines()); 1909 std::string feature_string("--instruction-set-features="); 1910 feature_string += features->GetFeatureString(); 1911 argv->push_back(feature_string); 1912} 1913 1914void Runtime::CreateJit() { 1915 CHECK(!IsAotCompiler()); 1916 if (GetInstrumentation()->IsForcedInterpretOnly()) { 1917 // Don't create JIT if forced interpret only. 1918 return; 1919 } 1920 std::string error_msg; 1921 jit_.reset(jit::Jit::Create(jit_options_.get(), &error_msg)); 1922 if (jit_.get() == nullptr) { 1923 LOG(WARNING) << "Failed to create JIT " << error_msg; 1924 } 1925} 1926 1927bool Runtime::CanRelocate() const { 1928 return !IsAotCompiler() || compiler_callbacks_->IsRelocationPossible(); 1929} 1930 1931bool Runtime::IsCompilingBootImage() const { 1932 return IsCompiler() && compiler_callbacks_->IsBootImage(); 1933} 1934 1935void Runtime::SetResolutionMethod(ArtMethod* method) { 1936 CHECK(method != nullptr); 1937 CHECK(method->IsRuntimeMethod()) << method; 1938 resolution_method_ = method; 1939} 1940 1941void Runtime::SetImtUnimplementedMethod(ArtMethod* method) { 1942 CHECK(method != nullptr); 1943 CHECK(method->IsRuntimeMethod()); 1944 imt_unimplemented_method_ = method; 1945} 1946 1947void Runtime::FixupConflictTables() { 1948 // We can only do this after the class linker is created. 1949 const size_t pointer_size = GetClassLinker()->GetImagePointerSize(); 1950 // Ones in image wont have correct tables. TODO: Fix. 1951 if (imt_unimplemented_method_->GetImtConflictTable(pointer_size) == nullptr || (true)) { 1952 imt_unimplemented_method_->SetImtConflictTable( 1953 ClassLinker::CreateImtConflictTable(/*count*/0u, GetLinearAlloc(), pointer_size), 1954 pointer_size); 1955 } 1956 if (imt_conflict_method_->GetImtConflictTable(pointer_size) == nullptr || (true)) { 1957 imt_conflict_method_->SetImtConflictTable( 1958 ClassLinker::CreateImtConflictTable(/*count*/0u, GetLinearAlloc(), pointer_size), 1959 pointer_size); 1960 } 1961} 1962 1963bool Runtime::IsVerificationEnabled() const { 1964 return verify_ == verifier::VerifyMode::kEnable || 1965 verify_ == verifier::VerifyMode::kSoftFail; 1966} 1967 1968bool Runtime::IsVerificationSoftFail() const { 1969 return verify_ == verifier::VerifyMode::kSoftFail; 1970} 1971 1972LinearAlloc* Runtime::CreateLinearAlloc() { 1973 // For 64 bit compilers, it needs to be in low 4GB in the case where we are cross compiling for a 1974 // 32 bit target. In this case, we have 32 bit pointers in the dex cache arrays which can't hold 1975 // when we have 64 bit ArtMethod pointers. 1976 return (IsAotCompiler() && Is64BitInstructionSet(kRuntimeISA)) 1977 ? new LinearAlloc(low_4gb_arena_pool_.get()) 1978 : new LinearAlloc(arena_pool_.get()); 1979} 1980 1981double Runtime::GetHashTableMinLoadFactor() const { 1982 return is_low_memory_mode_ ? kLowMemoryMinLoadFactor : kNormalMinLoadFactor; 1983} 1984 1985double Runtime::GetHashTableMaxLoadFactor() const { 1986 return is_low_memory_mode_ ? kLowMemoryMaxLoadFactor : kNormalMaxLoadFactor; 1987} 1988 1989void Runtime::UpdateProcessState(ProcessState process_state) { 1990 ProcessState old_process_state = process_state_; 1991 process_state_ = process_state; 1992 GetHeap()->UpdateProcessState(old_process_state, process_state); 1993} 1994 1995void Runtime::RegisterSensitiveThread() const { 1996 Thread::SetJitSensitiveThread(); 1997} 1998 1999} // namespace art 2000