runtime.cc revision e9300271556e47639cade1ec5fdf8f66b3724d03
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_Array.h" 107#include "native/java_lang_reflect_Constructor.h" 108#include "native/java_lang_reflect_Field.h" 109#include "native/java_lang_reflect_Method.h" 110#include "native/java_lang_reflect_Proxy.h" 111#include "native/java_util_concurrent_atomic_AtomicLong.h" 112#include "native/libcore_util_CharsetUtils.h" 113#include "native/org_apache_harmony_dalvik_ddmc_DdmServer.h" 114#include "native/org_apache_harmony_dalvik_ddmc_DdmVmInternal.h" 115#include "native/sun_misc_Unsafe.h" 116#include "native_bridge_art_interface.h" 117#include "oat_file.h" 118#include "oat_file_manager.h" 119#include "os.h" 120#include "parsed_options.h" 121#include "profiler.h" 122#include "jit/profile_saver.h" 123#include "quick/quick_method_frame_info.h" 124#include "reflection.h" 125#include "runtime_options.h" 126#include "ScopedLocalRef.h" 127#include "scoped_thread_state_change.h" 128#include "sigchain.h" 129#include "signal_catcher.h" 130#include "signal_set.h" 131#include "thread.h" 132#include "thread_list.h" 133#include "trace.h" 134#include "transaction.h" 135#include "utils.h" 136#include "verifier/method_verifier.h" 137#include "well_known_classes.h" 138 139namespace art { 140 141// If a signal isn't handled properly, enable a handler that attempts to dump the Java stack. 142static constexpr bool kEnableJavaStackTraceHandler = false; 143// Tuned by compiling GmsCore under perf and measuring time spent in DescriptorEquals for class 144// linking. 145static constexpr double kLowMemoryMinLoadFactor = 0.5; 146static constexpr double kLowMemoryMaxLoadFactor = 0.8; 147static constexpr double kNormalMinLoadFactor = 0.4; 148static constexpr double kNormalMaxLoadFactor = 0.7; 149Runtime* Runtime::instance_ = nullptr; 150 151struct TraceConfig { 152 Trace::TraceMode trace_mode; 153 Trace::TraceOutputMode trace_output_mode; 154 std::string trace_file; 155 size_t trace_file_size; 156}; 157 158Runtime::Runtime() 159 : resolution_method_(nullptr), 160 imt_conflict_method_(nullptr), 161 imt_unimplemented_method_(nullptr), 162 instruction_set_(kNone), 163 compiler_callbacks_(nullptr), 164 is_zygote_(false), 165 must_relocate_(false), 166 is_concurrent_gc_enabled_(true), 167 is_explicit_gc_disabled_(false), 168 dex2oat_enabled_(true), 169 image_dex2oat_enabled_(true), 170 default_stack_size_(0), 171 heap_(nullptr), 172 max_spins_before_thin_lock_inflation_(Monitor::kDefaultMaxSpinsBeforeThinLockInflation), 173 monitor_list_(nullptr), 174 monitor_pool_(nullptr), 175 thread_list_(nullptr), 176 intern_table_(nullptr), 177 class_linker_(nullptr), 178 signal_catcher_(nullptr), 179 java_vm_(nullptr), 180 fault_message_lock_("Fault message lock"), 181 fault_message_(""), 182 threads_being_born_(0), 183 shutdown_cond_(new ConditionVariable("Runtime shutdown", *Locks::runtime_shutdown_lock_)), 184 shutting_down_(false), 185 shutting_down_started_(false), 186 started_(false), 187 finished_starting_(false), 188 vfprintf_(nullptr), 189 exit_(nullptr), 190 abort_(nullptr), 191 stats_enabled_(false), 192 is_running_on_memory_tool_(RUNNING_ON_MEMORY_TOOL), 193 instrumentation_(), 194 main_thread_group_(nullptr), 195 system_thread_group_(nullptr), 196 system_class_loader_(nullptr), 197 dump_gc_performance_on_shutdown_(false), 198 preinitialization_transaction_(nullptr), 199 verify_(verifier::VerifyMode::kNone), 200 allow_dex_file_fallback_(true), 201 target_sdk_version_(0), 202 implicit_null_checks_(false), 203 implicit_so_checks_(false), 204 implicit_suspend_checks_(false), 205 no_sig_chain_(false), 206 is_native_bridge_loaded_(false), 207 is_native_debuggable_(false), 208 zygote_max_failed_boots_(0), 209 experimental_flags_(ExperimentalFlags::kNone), 210 oat_file_manager_(nullptr), 211 is_low_memory_mode_(false), 212 safe_mode_(false), 213 pruned_dalvik_cache_(false), 214 // Initially assume we perceive jank in case the process state is never updated. 215 process_state_(kProcessStateJankPerceptible) { 216 CheckAsmSupportOffsetsAndSizes(); 217 std::fill(callee_save_methods_, callee_save_methods_ + arraysize(callee_save_methods_), 0u); 218 interpreter::CheckInterpreterAsmConstants(); 219} 220 221Runtime::~Runtime() { 222 ScopedTrace trace("Runtime shutdown"); 223 if (is_native_bridge_loaded_) { 224 UnloadNativeBridge(); 225 } 226 227 if (dump_gc_performance_on_shutdown_) { 228 // This can't be called from the Heap destructor below because it 229 // could call RosAlloc::InspectAll() which needs the thread_list 230 // to be still alive. 231 heap_->DumpGcPerformanceInfo(LOG(INFO)); 232 } 233 234 Thread* self = Thread::Current(); 235 const bool attach_shutdown_thread = self == nullptr; 236 if (attach_shutdown_thread) { 237 CHECK(AttachCurrentThread("Shutdown thread", false, nullptr, false)); 238 self = Thread::Current(); 239 } else { 240 LOG(WARNING) << "Current thread not detached in Runtime shutdown"; 241 } 242 243 { 244 ScopedTrace trace2("Wait for shutdown cond"); 245 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 246 shutting_down_started_ = true; 247 while (threads_being_born_ > 0) { 248 shutdown_cond_->Wait(self); 249 } 250 shutting_down_ = true; 251 } 252 // Shutdown and wait for the daemons. 253 CHECK(self != nullptr); 254 if (IsFinishedStarting()) { 255 ScopedTrace trace2("Waiting for Daemons"); 256 self->ClearException(); 257 self->GetJniEnv()->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 258 WellKnownClasses::java_lang_Daemons_stop); 259 } 260 261 Trace::Shutdown(); 262 263 if (attach_shutdown_thread) { 264 DetachCurrentThread(); 265 self = nullptr; 266 } 267 268 // Make sure to let the GC complete if it is running. 269 heap_->WaitForGcToComplete(gc::kGcCauseBackground, self); 270 heap_->DeleteThreadPool(); 271 if (jit_ != nullptr) { 272 ScopedTrace trace2("Delete jit"); 273 VLOG(jit) << "Deleting jit thread pool"; 274 // Delete thread pool before the thread list since we don't want to wait forever on the 275 // JIT compiler threads. 276 jit_->DeleteThreadPool(); 277 // Similarly, stop the profile saver thread before deleting the thread list. 278 jit_->StopProfileSaver(); 279 } 280 281 // Make sure our internal threads are dead before we start tearing down things they're using. 282 Dbg::StopJdwp(); 283 delete signal_catcher_; 284 285 // Make sure all other non-daemon threads have terminated, and all daemon threads are suspended. 286 { 287 ScopedTrace trace2("Delete thread list"); 288 delete thread_list_; 289 } 290 // Delete the JIT after thread list to ensure that there is no remaining threads which could be 291 // accessing the instrumentation when we delete it. 292 if (jit_ != nullptr) { 293 VLOG(jit) << "Deleting jit"; 294 jit_.reset(nullptr); 295 } 296 297 // Shutdown the fault manager if it was initialized. 298 fault_manager.Shutdown(); 299 300 ScopedTrace trace2("Delete state"); 301 delete monitor_list_; 302 delete monitor_pool_; 303 delete class_linker_; 304 delete heap_; 305 delete intern_table_; 306 delete java_vm_; 307 delete oat_file_manager_; 308 Thread::Shutdown(); 309 QuasiAtomic::Shutdown(); 310 verifier::MethodVerifier::Shutdown(); 311 312 // Destroy allocators before shutting down the MemMap because they may use it. 313 linear_alloc_.reset(); 314 low_4gb_arena_pool_.reset(); 315 arena_pool_.reset(); 316 jit_arena_pool_.reset(); 317 MemMap::Shutdown(); 318 319 // TODO: acquire a static mutex on Runtime to avoid racing. 320 CHECK(instance_ == nullptr || instance_ == this); 321 instance_ = nullptr; 322} 323 324struct AbortState { 325 void Dump(std::ostream& os) const { 326 if (gAborting > 1) { 327 os << "Runtime aborting --- recursively, so no thread-specific detail!\n"; 328 return; 329 } 330 gAborting++; 331 os << "Runtime aborting...\n"; 332 if (Runtime::Current() == nullptr) { 333 os << "(Runtime does not yet exist!)\n"; 334 DumpNativeStack(os, GetTid(), nullptr, " native: ", nullptr); 335 return; 336 } 337 Thread* self = Thread::Current(); 338 if (self == nullptr) { 339 os << "(Aborting thread was not attached to runtime!)\n"; 340 DumpKernelStack(os, GetTid(), " kernel: ", false); 341 DumpNativeStack(os, GetTid(), nullptr, " native: ", nullptr); 342 } else { 343 os << "Aborting thread:\n"; 344 if (Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)) { 345 DumpThread(os, self); 346 } else { 347 if (Locks::mutator_lock_->SharedTryLock(self)) { 348 DumpThread(os, self); 349 Locks::mutator_lock_->SharedUnlock(self); 350 } 351 } 352 } 353 DumpAllThreads(os, self); 354 } 355 356 // No thread-safety analysis as we do explicitly test for holding the mutator lock. 357 void DumpThread(std::ostream& os, Thread* self) const NO_THREAD_SAFETY_ANALYSIS { 358 DCHECK(Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)); 359 self->Dump(os); 360 if (self->IsExceptionPending()) { 361 mirror::Throwable* exception = self->GetException(); 362 os << "Pending exception " << exception->Dump(); 363 } 364 } 365 366 void DumpAllThreads(std::ostream& os, Thread* self) const { 367 Runtime* runtime = Runtime::Current(); 368 if (runtime != nullptr) { 369 ThreadList* thread_list = runtime->GetThreadList(); 370 if (thread_list != nullptr) { 371 bool tll_already_held = Locks::thread_list_lock_->IsExclusiveHeld(self); 372 bool ml_already_held = Locks::mutator_lock_->IsSharedHeld(self); 373 if (!tll_already_held || !ml_already_held) { 374 os << "Dumping all threads without appropriate locks held:" 375 << (!tll_already_held ? " thread list lock" : "") 376 << (!ml_already_held ? " mutator lock" : "") 377 << "\n"; 378 } 379 os << "All threads:\n"; 380 thread_list->Dump(os); 381 } 382 } 383 } 384}; 385 386void Runtime::Abort() { 387 gAborting++; // set before taking any locks 388 389 // Ensure that we don't have multiple threads trying to abort at once, 390 // which would result in significantly worse diagnostics. 391 MutexLock mu(Thread::Current(), *Locks::abort_lock_); 392 393 // Get any pending output out of the way. 394 fflush(nullptr); 395 396 // Many people have difficulty distinguish aborts from crashes, 397 // so be explicit. 398 AbortState state; 399 LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state); 400 401 // Call the abort hook if we have one. 402 if (Runtime::Current() != nullptr && Runtime::Current()->abort_ != nullptr) { 403 LOG(INTERNAL_FATAL) << "Calling abort hook..."; 404 Runtime::Current()->abort_(); 405 // notreached 406 LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!"; 407 } 408 409#if defined(__GLIBC__) 410 // TODO: we ought to be able to use pthread_kill(3) here (or abort(3), 411 // which POSIX defines in terms of raise(3), which POSIX defines in terms 412 // of pthread_kill(3)). On Linux, though, libcorkscrew can't unwind through 413 // libpthread, which means the stacks we dump would be useless. Calling 414 // tgkill(2) directly avoids that. 415 syscall(__NR_tgkill, getpid(), GetTid(), SIGABRT); 416 // TODO: LLVM installs it's own SIGABRT handler so exit to be safe... Can we disable that in LLVM? 417 // If not, we could use sigaction(3) before calling tgkill(2) and lose this call to exit(3). 418 exit(1); 419#else 420 abort(); 421#endif 422 // notreached 423} 424 425void Runtime::PreZygoteFork() { 426 heap_->PreZygoteFork(); 427} 428 429void Runtime::CallExitHook(jint status) { 430 if (exit_ != nullptr) { 431 ScopedThreadStateChange tsc(Thread::Current(), kNative); 432 exit_(status); 433 LOG(WARNING) << "Exit hook returned instead of exiting!"; 434 } 435} 436 437void Runtime::SweepSystemWeaks(IsMarkedVisitor* visitor) { 438 GetInternTable()->SweepInternTableWeaks(visitor); 439 GetMonitorList()->SweepMonitorList(visitor); 440 GetJavaVM()->SweepJniWeakGlobals(visitor); 441 GetHeap()->SweepAllocationRecords(visitor); 442 GetLambdaBoxTable()->SweepWeakBoxedLambdas(visitor); 443} 444 445bool Runtime::ParseOptions(const RuntimeOptions& raw_options, 446 bool ignore_unrecognized, 447 RuntimeArgumentMap* runtime_options) { 448 InitLogging(/* argv */ nullptr); // Calls Locks::Init() as a side effect. 449 bool parsed = ParsedOptions::Parse(raw_options, ignore_unrecognized, runtime_options); 450 if (!parsed) { 451 LOG(ERROR) << "Failed to parse options"; 452 return false; 453 } 454 return true; 455} 456 457bool Runtime::Create(RuntimeArgumentMap&& runtime_options) { 458 // TODO: acquire a static mutex on Runtime to avoid racing. 459 if (Runtime::instance_ != nullptr) { 460 return false; 461 } 462 instance_ = new Runtime; 463 if (!instance_->Init(std::move(runtime_options))) { 464 // TODO: Currently deleting the instance will abort the runtime on destruction. Now This will 465 // leak memory, instead. Fix the destructor. b/19100793. 466 // delete instance_; 467 instance_ = nullptr; 468 return false; 469 } 470 return true; 471} 472 473bool Runtime::Create(const RuntimeOptions& raw_options, bool ignore_unrecognized) { 474 RuntimeArgumentMap runtime_options; 475 return ParseOptions(raw_options, ignore_unrecognized, &runtime_options) && 476 Create(std::move(runtime_options)); 477} 478 479static jobject CreateSystemClassLoader(Runtime* runtime) { 480 if (runtime->IsAotCompiler() && !runtime->GetCompilerCallbacks()->IsBootImage()) { 481 return nullptr; 482 } 483 484 ScopedObjectAccess soa(Thread::Current()); 485 ClassLinker* cl = Runtime::Current()->GetClassLinker(); 486 auto pointer_size = cl->GetImagePointerSize(); 487 488 StackHandleScope<2> hs(soa.Self()); 489 Handle<mirror::Class> class_loader_class( 490 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader))); 491 CHECK(cl->EnsureInitialized(soa.Self(), class_loader_class, true, true)); 492 493 ArtMethod* getSystemClassLoader = class_loader_class->FindDirectMethod( 494 "getSystemClassLoader", "()Ljava/lang/ClassLoader;", pointer_size); 495 CHECK(getSystemClassLoader != nullptr); 496 497 JValue result = InvokeWithJValues(soa, nullptr, soa.EncodeMethod(getSystemClassLoader), nullptr); 498 JNIEnv* env = soa.Self()->GetJniEnv(); 499 ScopedLocalRef<jobject> system_class_loader(env, soa.AddLocalReference<jobject>(result.GetL())); 500 CHECK(system_class_loader.get() != nullptr); 501 502 soa.Self()->SetClassLoaderOverride(system_class_loader.get()); 503 504 Handle<mirror::Class> thread_class( 505 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread))); 506 CHECK(cl->EnsureInitialized(soa.Self(), thread_class, true, true)); 507 508 ArtField* contextClassLoader = 509 thread_class->FindDeclaredInstanceField("contextClassLoader", "Ljava/lang/ClassLoader;"); 510 CHECK(contextClassLoader != nullptr); 511 512 // We can't run in a transaction yet. 513 contextClassLoader->SetObject<false>(soa.Self()->GetPeer(), 514 soa.Decode<mirror::ClassLoader*>(system_class_loader.get())); 515 516 return env->NewGlobalRef(system_class_loader.get()); 517} 518 519std::string Runtime::GetPatchoatExecutable() const { 520 if (!patchoat_executable_.empty()) { 521 return patchoat_executable_; 522 } 523 std::string patchoat_executable(GetAndroidRoot()); 524 patchoat_executable += (kIsDebugBuild ? "/bin/patchoatd" : "/bin/patchoat"); 525 return patchoat_executable; 526} 527 528std::string Runtime::GetCompilerExecutable() const { 529 if (!compiler_executable_.empty()) { 530 return compiler_executable_; 531 } 532 std::string compiler_executable(GetAndroidRoot()); 533 compiler_executable += (kIsDebugBuild ? "/bin/dex2oatd" : "/bin/dex2oat"); 534 return compiler_executable; 535} 536 537bool Runtime::Start() { 538 VLOG(startup) << "Runtime::Start entering"; 539 540 CHECK(!no_sig_chain_) << "A started runtime should have sig chain enabled"; 541 542 // If a debug host build, disable ptrace restriction for debugging and test timeout thread dump. 543 // Only 64-bit as prctl() may fail in 32 bit userspace on a 64-bit kernel. 544#if defined(__linux__) && !defined(__ANDROID__) && defined(__x86_64__) 545 if (kIsDebugBuild) { 546 CHECK_EQ(prctl(PR_SET_PTRACER, PR_SET_PTRACER_ANY), 0); 547 } 548#endif 549 550 // Restore main thread state to kNative as expected by native code. 551 Thread* self = Thread::Current(); 552 553 self->TransitionFromRunnableToSuspended(kNative); 554 555 started_ = true; 556 557 // Use !IsAotCompiler so that we get test coverage, tests are never the zygote. 558 if (!IsAotCompiler()) { 559 ScopedObjectAccess soa(self); 560 { 561 ScopedTrace trace2("AddImageStringsToTable"); 562 GetInternTable()->AddImagesStringsToTable(heap_->GetBootImageSpaces()); 563 } 564 { 565 ScopedTrace trace2("MoveImageClassesToClassTable"); 566 GetClassLinker()->AddBootImageClassesToClassTable(); 567 } 568 } 569 570 if (jit_options_->UseJIT()) { 571 std::string error_msg; 572 if (!IsZygote()) { 573 // If we are the zygote then we need to wait until after forking to create the code cache 574 // due to SELinux restrictions on r/w/x memory regions. 575 CreateJit(); 576 } else if (!jit::Jit::LoadCompilerLibrary(&error_msg)) { 577 // Try to load compiler pre zygote to reduce PSS. b/27744947 578 LOG(WARNING) << "Failed to load JIT compiler with error " << error_msg; 579 } 580 } 581 582 if (!IsImageDex2OatEnabled() || !GetHeap()->HasBootImageSpace()) { 583 ScopedObjectAccess soa(self); 584 StackHandleScope<1> hs(soa.Self()); 585 auto klass(hs.NewHandle<mirror::Class>(mirror::Class::GetJavaLangClass())); 586 class_linker_->EnsureInitialized(soa.Self(), klass, true, true); 587 } 588 589 // InitNativeMethods needs to be after started_ so that the classes 590 // it touches will have methods linked to the oat file if necessary. 591 { 592 ScopedTrace trace2("InitNativeMethods"); 593 InitNativeMethods(); 594 } 595 596 // Initialize well known thread group values that may be accessed threads while attaching. 597 InitThreadGroups(self); 598 599 Thread::FinishStartup(); 600 601 system_class_loader_ = CreateSystemClassLoader(this); 602 603 if (is_zygote_) { 604 if (!InitZygote()) { 605 return false; 606 } 607 } else { 608 if (is_native_bridge_loaded_) { 609 PreInitializeNativeBridge("."); 610 } 611 NativeBridgeAction action = force_native_bridge_ 612 ? NativeBridgeAction::kInitialize 613 : NativeBridgeAction::kUnload; 614 InitNonZygoteOrPostFork(self->GetJniEnv(), 615 /* is_system_server */ false, 616 action, 617 GetInstructionSetString(kRuntimeISA)); 618 } 619 620 StartDaemonThreads(); 621 622 { 623 ScopedObjectAccess soa(self); 624 self->GetJniEnv()->locals.AssertEmpty(); 625 } 626 627 VLOG(startup) << "Runtime::Start exiting"; 628 finished_starting_ = true; 629 630 if (profiler_options_.IsEnabled() && !profile_output_filename_.empty()) { 631 // User has asked for a profile using -Xenable-profiler. 632 // Create the profile file if it doesn't exist. 633 int fd = open(profile_output_filename_.c_str(), O_RDWR|O_CREAT|O_EXCL, 0660); 634 if (fd >= 0) { 635 close(fd); 636 } else if (errno != EEXIST) { 637 LOG(WARNING) << "Failed to access the profile file. Profiler disabled."; 638 } 639 } 640 641 if (trace_config_.get() != nullptr && trace_config_->trace_file != "") { 642 ScopedThreadStateChange tsc(self, kWaitingForMethodTracingStart); 643 Trace::Start(trace_config_->trace_file.c_str(), 644 -1, 645 static_cast<int>(trace_config_->trace_file_size), 646 0, 647 trace_config_->trace_output_mode, 648 trace_config_->trace_mode, 649 0); 650 } 651 652 return true; 653} 654 655void Runtime::EndThreadBirth() REQUIRES(Locks::runtime_shutdown_lock_) { 656 DCHECK_GT(threads_being_born_, 0U); 657 threads_being_born_--; 658 if (shutting_down_started_ && threads_being_born_ == 0) { 659 shutdown_cond_->Broadcast(Thread::Current()); 660 } 661} 662 663// Do zygote-mode-only initialization. 664bool Runtime::InitZygote() { 665#ifdef __linux__ 666 // zygote goes into its own process group 667 setpgid(0, 0); 668 669 // See storage config details at http://source.android.com/tech/storage/ 670 // Create private mount namespace shared by all children 671 if (unshare(CLONE_NEWNS) == -1) { 672 PLOG(ERROR) << "Failed to unshare()"; 673 return false; 674 } 675 676 // Mark rootfs as being a slave so that changes from default 677 // namespace only flow into our children. 678 if (mount("rootfs", "/", nullptr, (MS_SLAVE | MS_REC), nullptr) == -1) { 679 PLOG(ERROR) << "Failed to mount() rootfs as MS_SLAVE"; 680 return false; 681 } 682 683 // Create a staging tmpfs that is shared by our children; they will 684 // bind mount storage into their respective private namespaces, which 685 // are isolated from each other. 686 const char* target_base = getenv("EMULATED_STORAGE_TARGET"); 687 if (target_base != nullptr) { 688 if (mount("tmpfs", target_base, "tmpfs", MS_NOSUID | MS_NODEV, 689 "uid=0,gid=1028,mode=0751") == -1) { 690 PLOG(ERROR) << "Failed to mount tmpfs to " << target_base; 691 return false; 692 } 693 } 694 695 return true; 696#else 697 UNIMPLEMENTED(FATAL); 698 return false; 699#endif 700} 701 702void Runtime::InitNonZygoteOrPostFork( 703 JNIEnv* env, bool is_system_server, NativeBridgeAction action, const char* isa) { 704 is_zygote_ = false; 705 706 if (is_native_bridge_loaded_) { 707 switch (action) { 708 case NativeBridgeAction::kUnload: 709 UnloadNativeBridge(); 710 is_native_bridge_loaded_ = false; 711 break; 712 713 case NativeBridgeAction::kInitialize: 714 InitializeNativeBridge(env, isa); 715 break; 716 } 717 } 718 719 // Create the thread pools. 720 heap_->CreateThreadPool(); 721 // Reset the gc performance data at zygote fork so that the GCs 722 // before fork aren't attributed to an app. 723 heap_->ResetGcPerformanceInfo(); 724 725 if (!is_system_server && !safe_mode_ && jit_options_->UseJIT() && jit_.get() == nullptr) { 726 // Note that when running ART standalone (not zygote, nor zygote fork), 727 // the jit may have already been created. 728 CreateJit(); 729 } 730 731 StartSignalCatcher(); 732 733 // Start the JDWP thread. If the command-line debugger flags specified "suspend=y", 734 // this will pause the runtime, so we probably want this to come last. 735 Dbg::StartJdwp(); 736} 737 738void Runtime::StartSignalCatcher() { 739 if (!is_zygote_) { 740 signal_catcher_ = new SignalCatcher(stack_trace_file_); 741 } 742} 743 744bool Runtime::IsShuttingDown(Thread* self) { 745 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 746 return IsShuttingDownLocked(); 747} 748 749bool Runtime::IsDebuggable() const { 750 const OatFile* oat_file = GetOatFileManager().GetPrimaryOatFile(); 751 return oat_file != nullptr && oat_file->IsDebuggable(); 752} 753 754void Runtime::StartDaemonThreads() { 755 ScopedTrace trace(__FUNCTION__); 756 VLOG(startup) << "Runtime::StartDaemonThreads entering"; 757 758 Thread* self = Thread::Current(); 759 760 // Must be in the kNative state for calling native methods. 761 CHECK_EQ(self->GetState(), kNative); 762 763 JNIEnv* env = self->GetJniEnv(); 764 env->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 765 WellKnownClasses::java_lang_Daemons_start); 766 if (env->ExceptionCheck()) { 767 env->ExceptionDescribe(); 768 LOG(FATAL) << "Error starting java.lang.Daemons"; 769 } 770 771 VLOG(startup) << "Runtime::StartDaemonThreads exiting"; 772} 773 774// Attempts to open dex files from image(s). Given the image location, try to find the oat file 775// and open it to get the stored dex file. If the image is the first for a multi-image boot 776// classpath, go on and also open the other images. 777static bool OpenDexFilesFromImage(const std::string& image_location, 778 std::vector<std::unique_ptr<const DexFile>>* dex_files, 779 size_t* failures) { 780 DCHECK(dex_files != nullptr) << "OpenDexFilesFromImage: out-param is nullptr"; 781 782 // Use a work-list approach, so that we can easily reuse the opening code. 783 std::vector<std::string> image_locations; 784 image_locations.push_back(image_location); 785 786 for (size_t index = 0; index < image_locations.size(); ++index) { 787 std::string system_filename; 788 bool has_system = false; 789 std::string cache_filename_unused; 790 bool dalvik_cache_exists_unused; 791 bool has_cache_unused; 792 bool is_global_cache_unused; 793 bool found_image = gc::space::ImageSpace::FindImageFilename(image_locations[index].c_str(), 794 kRuntimeISA, 795 &system_filename, 796 &has_system, 797 &cache_filename_unused, 798 &dalvik_cache_exists_unused, 799 &has_cache_unused, 800 &is_global_cache_unused); 801 802 if (!found_image || !has_system) { 803 return false; 804 } 805 806 // We are falling back to non-executable use of the oat file because patching failed, presumably 807 // due to lack of space. 808 std::string oat_filename = 809 ImageHeader::GetOatLocationFromImageLocation(system_filename.c_str()); 810 std::string oat_location = 811 ImageHeader::GetOatLocationFromImageLocation(image_locations[index].c_str()); 812 // Note: in the multi-image case, the image location may end in ".jar," and not ".art." Handle 813 // that here. 814 if (EndsWith(oat_location, ".jar")) { 815 oat_location.replace(oat_location.length() - 3, 3, "oat"); 816 } 817 818 std::unique_ptr<File> file(OS::OpenFileForReading(oat_filename.c_str())); 819 if (file.get() == nullptr) { 820 return false; 821 } 822 std::string error_msg; 823 std::unique_ptr<ElfFile> elf_file(ElfFile::Open(file.release(), 824 false, 825 false, 826 /*low_4gb*/false, 827 &error_msg)); 828 if (elf_file.get() == nullptr) { 829 return false; 830 } 831 std::unique_ptr<const OatFile> oat_file( 832 OatFile::OpenWithElfFile(elf_file.release(), oat_location, nullptr, &error_msg)); 833 if (oat_file == nullptr) { 834 LOG(WARNING) << "Unable to use '" << oat_filename << "' because " << error_msg; 835 return false; 836 } 837 838 for (const OatFile::OatDexFile* oat_dex_file : oat_file->GetOatDexFiles()) { 839 if (oat_dex_file == nullptr) { 840 *failures += 1; 841 continue; 842 } 843 std::unique_ptr<const DexFile> dex_file = oat_dex_file->OpenDexFile(&error_msg); 844 if (dex_file.get() == nullptr) { 845 *failures += 1; 846 } else { 847 dex_files->push_back(std::move(dex_file)); 848 } 849 } 850 851 if (index == 0) { 852 // First file. See if this is a multi-image environment, and if so, enqueue the other images. 853 const OatHeader& boot_oat_header = oat_file->GetOatHeader(); 854 const char* boot_cp = boot_oat_header.GetStoreValueByKey(OatHeader::kBootClassPath); 855 if (boot_cp != nullptr) { 856 gc::space::ImageSpace::CreateMultiImageLocations(image_locations[0], 857 boot_cp, 858 &image_locations); 859 } 860 } 861 862 Runtime::Current()->GetOatFileManager().RegisterOatFile(std::move(oat_file)); 863 } 864 return true; 865} 866 867 868static size_t OpenDexFiles(const std::vector<std::string>& dex_filenames, 869 const std::vector<std::string>& dex_locations, 870 const std::string& image_location, 871 std::vector<std::unique_ptr<const DexFile>>* dex_files) { 872 DCHECK(dex_files != nullptr) << "OpenDexFiles: out-param is nullptr"; 873 size_t failure_count = 0; 874 if (!image_location.empty() && OpenDexFilesFromImage(image_location, dex_files, &failure_count)) { 875 return failure_count; 876 } 877 failure_count = 0; 878 for (size_t i = 0; i < dex_filenames.size(); i++) { 879 const char* dex_filename = dex_filenames[i].c_str(); 880 const char* dex_location = dex_locations[i].c_str(); 881 std::string error_msg; 882 if (!OS::FileExists(dex_filename)) { 883 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 884 continue; 885 } 886 if (!DexFile::Open(dex_filename, dex_location, &error_msg, dex_files)) { 887 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 888 ++failure_count; 889 } 890 } 891 return failure_count; 892} 893 894void Runtime::SetSentinel(mirror::Object* sentinel) { 895 CHECK(sentinel_.Read() == nullptr); 896 CHECK(sentinel != nullptr); 897 CHECK(!heap_->IsMovableObject(sentinel)); 898 sentinel_ = GcRoot<mirror::Object>(sentinel); 899} 900 901bool Runtime::Init(RuntimeArgumentMap&& runtime_options_in) { 902 RuntimeArgumentMap runtime_options(std::move(runtime_options_in)); 903 ScopedTrace trace(__FUNCTION__); 904 CHECK_EQ(sysconf(_SC_PAGE_SIZE), kPageSize); 905 906 MemMap::Init(); 907 908 using Opt = RuntimeArgumentMap; 909 VLOG(startup) << "Runtime::Init -verbose:startup enabled"; 910 911 QuasiAtomic::Startup(); 912 913 oat_file_manager_ = new OatFileManager; 914 915 Monitor::Init(runtime_options.GetOrDefault(Opt::LockProfThreshold), 916 runtime_options.GetOrDefault(Opt::HookIsSensitiveThread)); 917 918 boot_class_path_string_ = runtime_options.ReleaseOrDefault(Opt::BootClassPath); 919 class_path_string_ = runtime_options.ReleaseOrDefault(Opt::ClassPath); 920 properties_ = runtime_options.ReleaseOrDefault(Opt::PropertiesList); 921 922 compiler_callbacks_ = runtime_options.GetOrDefault(Opt::CompilerCallbacksPtr); 923 patchoat_executable_ = runtime_options.ReleaseOrDefault(Opt::PatchOat); 924 must_relocate_ = runtime_options.GetOrDefault(Opt::Relocate); 925 is_zygote_ = runtime_options.Exists(Opt::Zygote); 926 is_explicit_gc_disabled_ = runtime_options.Exists(Opt::DisableExplicitGC); 927 dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::Dex2Oat); 928 image_dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::ImageDex2Oat); 929 dump_native_stack_on_sig_quit_ = runtime_options.GetOrDefault(Opt::DumpNativeStackOnSigQuit); 930 931 vfprintf_ = runtime_options.GetOrDefault(Opt::HookVfprintf); 932 exit_ = runtime_options.GetOrDefault(Opt::HookExit); 933 abort_ = runtime_options.GetOrDefault(Opt::HookAbort); 934 935 default_stack_size_ = runtime_options.GetOrDefault(Opt::StackSize); 936 stack_trace_file_ = runtime_options.ReleaseOrDefault(Opt::StackTraceFile); 937 938 compiler_executable_ = runtime_options.ReleaseOrDefault(Opt::Compiler); 939 compiler_options_ = runtime_options.ReleaseOrDefault(Opt::CompilerOptions); 940 image_compiler_options_ = runtime_options.ReleaseOrDefault(Opt::ImageCompilerOptions); 941 image_location_ = runtime_options.GetOrDefault(Opt::Image); 942 943 max_spins_before_thin_lock_inflation_ = 944 runtime_options.GetOrDefault(Opt::MaxSpinsBeforeThinLockInflation); 945 946 monitor_list_ = new MonitorList; 947 monitor_pool_ = MonitorPool::Create(); 948 thread_list_ = new ThreadList; 949 intern_table_ = new InternTable; 950 951 verify_ = runtime_options.GetOrDefault(Opt::Verify); 952 allow_dex_file_fallback_ = !runtime_options.Exists(Opt::NoDexFileFallback); 953 954 no_sig_chain_ = runtime_options.Exists(Opt::NoSigChain); 955 force_native_bridge_ = runtime_options.Exists(Opt::ForceNativeBridge); 956 957 Split(runtime_options.GetOrDefault(Opt::CpuAbiList), ',', &cpu_abilist_); 958 959 fingerprint_ = runtime_options.ReleaseOrDefault(Opt::Fingerprint); 960 961 if (runtime_options.GetOrDefault(Opt::Interpret)) { 962 GetInstrumentation()->ForceInterpretOnly(); 963 } 964 965 zygote_max_failed_boots_ = runtime_options.GetOrDefault(Opt::ZygoteMaxFailedBoots); 966 experimental_flags_ = runtime_options.GetOrDefault(Opt::Experimental); 967 is_low_memory_mode_ = runtime_options.Exists(Opt::LowMemoryMode); 968 969 { 970 CompilerFilter::Filter filter; 971 std::string filter_str = runtime_options.GetOrDefault(Opt::OatFileManagerCompilerFilter); 972 if (!CompilerFilter::ParseCompilerFilter(filter_str.c_str(), &filter)) { 973 LOG(ERROR) << "Cannot parse compiler filter " << filter_str; 974 return false; 975 } 976 OatFileManager::SetCompilerFilter(filter); 977 } 978 979 XGcOption xgc_option = runtime_options.GetOrDefault(Opt::GcOption); 980 heap_ = new gc::Heap(runtime_options.GetOrDefault(Opt::MemoryInitialSize), 981 runtime_options.GetOrDefault(Opt::HeapGrowthLimit), 982 runtime_options.GetOrDefault(Opt::HeapMinFree), 983 runtime_options.GetOrDefault(Opt::HeapMaxFree), 984 runtime_options.GetOrDefault(Opt::HeapTargetUtilization), 985 runtime_options.GetOrDefault(Opt::ForegroundHeapGrowthMultiplier), 986 runtime_options.GetOrDefault(Opt::MemoryMaximumSize), 987 runtime_options.GetOrDefault(Opt::NonMovingSpaceCapacity), 988 runtime_options.GetOrDefault(Opt::Image), 989 runtime_options.GetOrDefault(Opt::ImageInstructionSet), 990 xgc_option.collector_type_, 991 runtime_options.GetOrDefault(Opt::BackgroundGc), 992 runtime_options.GetOrDefault(Opt::LargeObjectSpace), 993 runtime_options.GetOrDefault(Opt::LargeObjectThreshold), 994 runtime_options.GetOrDefault(Opt::ParallelGCThreads), 995 runtime_options.GetOrDefault(Opt::ConcGCThreads), 996 runtime_options.Exists(Opt::LowMemoryMode), 997 runtime_options.GetOrDefault(Opt::LongPauseLogThreshold), 998 runtime_options.GetOrDefault(Opt::LongGCLogThreshold), 999 runtime_options.Exists(Opt::IgnoreMaxFootprint), 1000 runtime_options.GetOrDefault(Opt::UseTLAB), 1001 xgc_option.verify_pre_gc_heap_, 1002 xgc_option.verify_pre_sweeping_heap_, 1003 xgc_option.verify_post_gc_heap_, 1004 xgc_option.verify_pre_gc_rosalloc_, 1005 xgc_option.verify_pre_sweeping_rosalloc_, 1006 xgc_option.verify_post_gc_rosalloc_, 1007 xgc_option.gcstress_, 1008 runtime_options.GetOrDefault(Opt::EnableHSpaceCompactForOOM), 1009 runtime_options.GetOrDefault(Opt::HSpaceCompactForOOMMinIntervalsMs)); 1010 1011 if (!heap_->HasBootImageSpace() && !allow_dex_file_fallback_) { 1012 LOG(ERROR) << "Dex file fallback disabled, cannot continue without image."; 1013 return false; 1014 } 1015 1016 dump_gc_performance_on_shutdown_ = runtime_options.Exists(Opt::DumpGCPerformanceOnShutdown); 1017 1018 if (runtime_options.Exists(Opt::JdwpOptions)) { 1019 Dbg::ConfigureJdwp(runtime_options.GetOrDefault(Opt::JdwpOptions)); 1020 } 1021 1022 jit_options_.reset(jit::JitOptions::CreateFromRuntimeArguments(runtime_options)); 1023 if (IsAotCompiler()) { 1024 // If we are already the compiler at this point, we must be dex2oat. Don't create the jit in 1025 // this case. 1026 // If runtime_options doesn't have UseJIT set to true then CreateFromRuntimeArguments returns 1027 // null and we don't create the jit. 1028 jit_options_->SetUseJIT(false); 1029 } 1030 1031 // Allocate a global table of boxed lambda objects <-> closures. 1032 lambda_box_table_ = MakeUnique<lambda::BoxTable>(); 1033 1034 // Use MemMap arena pool for jit, malloc otherwise. Malloc arenas are faster to allocate but 1035 // can't be trimmed as easily. 1036 const bool use_malloc = IsAotCompiler(); 1037 arena_pool_.reset(new ArenaPool(use_malloc, /* low_4gb */ false)); 1038 jit_arena_pool_.reset( 1039 new ArenaPool(/* use_malloc */ false, /* low_4gb */ false, "CompilerMetadata")); 1040 1041 if (IsAotCompiler() && Is64BitInstructionSet(kRuntimeISA)) { 1042 // 4gb, no malloc. Explanation in header. 1043 low_4gb_arena_pool_.reset(new ArenaPool(/* use_malloc */ false, /* low_4gb */ true)); 1044 } 1045 linear_alloc_.reset(CreateLinearAlloc()); 1046 1047 BlockSignals(); 1048 InitPlatformSignalHandlers(); 1049 1050 // Change the implicit checks flags based on runtime architecture. 1051 switch (kRuntimeISA) { 1052 case kArm: 1053 case kThumb2: 1054 case kX86: 1055 case kArm64: 1056 case kX86_64: 1057 case kMips: 1058 case kMips64: 1059 implicit_null_checks_ = true; 1060 // Installing stack protection does not play well with valgrind. 1061 implicit_so_checks_ = !(RUNNING_ON_MEMORY_TOOL && kMemoryToolIsValgrind); 1062 break; 1063 default: 1064 // Keep the defaults. 1065 break; 1066 } 1067 1068 if (!no_sig_chain_) { 1069 // Dex2Oat's Runtime does not need the signal chain or the fault handler. 1070 1071 // Initialize the signal chain so that any calls to sigaction get 1072 // correctly routed to the next in the chain regardless of whether we 1073 // have claimed the signal or not. 1074 InitializeSignalChain(); 1075 1076 if (implicit_null_checks_ || implicit_so_checks_ || implicit_suspend_checks_) { 1077 fault_manager.Init(); 1078 1079 // These need to be in a specific order. The null point check handler must be 1080 // after the suspend check and stack overflow check handlers. 1081 // 1082 // Note: the instances attach themselves to the fault manager and are handled by it. The manager 1083 // will delete the instance on Shutdown(). 1084 if (implicit_suspend_checks_) { 1085 new SuspensionHandler(&fault_manager); 1086 } 1087 1088 if (implicit_so_checks_) { 1089 new StackOverflowHandler(&fault_manager); 1090 } 1091 1092 if (implicit_null_checks_) { 1093 new NullPointerHandler(&fault_manager); 1094 } 1095 1096 if (kEnableJavaStackTraceHandler) { 1097 new JavaStackTraceHandler(&fault_manager); 1098 } 1099 } 1100 } 1101 1102 java_vm_ = new JavaVMExt(this, runtime_options); 1103 1104 Thread::Startup(); 1105 1106 // ClassLinker needs an attached thread, but we can't fully attach a thread without creating 1107 // objects. We can't supply a thread group yet; it will be fixed later. Since we are the main 1108 // thread, we do not get a java peer. 1109 Thread* self = Thread::Attach("main", false, nullptr, false); 1110 CHECK_EQ(self->GetThreadId(), ThreadList::kMainThreadId); 1111 CHECK(self != nullptr); 1112 1113 // Set us to runnable so tools using a runtime can allocate and GC by default 1114 self->TransitionFromSuspendedToRunnable(); 1115 1116 // Now we're attached, we can take the heap locks and validate the heap. 1117 GetHeap()->EnableObjectValidation(); 1118 1119 CHECK_GE(GetHeap()->GetContinuousSpaces().size(), 1U); 1120 class_linker_ = new ClassLinker(intern_table_); 1121 if (GetHeap()->HasBootImageSpace()) { 1122 std::string error_msg; 1123 bool result = class_linker_->InitFromBootImage(&error_msg); 1124 if (!result) { 1125 LOG(ERROR) << "Could not initialize from image: " << error_msg; 1126 return false; 1127 } 1128 if (kIsDebugBuild) { 1129 for (auto image_space : GetHeap()->GetBootImageSpaces()) { 1130 image_space->VerifyImageAllocations(); 1131 } 1132 } 1133 if (boot_class_path_string_.empty()) { 1134 // The bootclasspath is not explicitly specified: construct it from the loaded dex files. 1135 const std::vector<const DexFile*>& boot_class_path = GetClassLinker()->GetBootClassPath(); 1136 std::vector<std::string> dex_locations; 1137 dex_locations.reserve(boot_class_path.size()); 1138 for (const DexFile* dex_file : boot_class_path) { 1139 dex_locations.push_back(dex_file->GetLocation()); 1140 } 1141 boot_class_path_string_ = Join(dex_locations, ':'); 1142 } 1143 } else { 1144 std::vector<std::string> dex_filenames; 1145 Split(boot_class_path_string_, ':', &dex_filenames); 1146 1147 std::vector<std::string> dex_locations; 1148 if (!runtime_options.Exists(Opt::BootClassPathLocations)) { 1149 dex_locations = dex_filenames; 1150 } else { 1151 dex_locations = runtime_options.GetOrDefault(Opt::BootClassPathLocations); 1152 CHECK_EQ(dex_filenames.size(), dex_locations.size()); 1153 } 1154 1155 std::vector<std::unique_ptr<const DexFile>> boot_class_path; 1156 if (runtime_options.Exists(Opt::BootClassPathDexList)) { 1157 boot_class_path.swap(*runtime_options.GetOrDefault(Opt::BootClassPathDexList)); 1158 } else { 1159 OpenDexFiles(dex_filenames, 1160 dex_locations, 1161 runtime_options.GetOrDefault(Opt::Image), 1162 &boot_class_path); 1163 } 1164 instruction_set_ = runtime_options.GetOrDefault(Opt::ImageInstructionSet); 1165 std::string error_msg; 1166 if (!class_linker_->InitWithoutImage(std::move(boot_class_path), &error_msg)) { 1167 LOG(ERROR) << "Could not initialize without image: " << error_msg; 1168 return false; 1169 } 1170 1171 // TODO: Should we move the following to InitWithoutImage? 1172 SetInstructionSet(instruction_set_); 1173 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 1174 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 1175 if (!HasCalleeSaveMethod(type)) { 1176 SetCalleeSaveMethod(CreateCalleeSaveMethod(), type); 1177 } 1178 } 1179 } 1180 1181 CHECK(class_linker_ != nullptr); 1182 1183 verifier::MethodVerifier::Init(); 1184 1185 if (runtime_options.Exists(Opt::MethodTrace)) { 1186 trace_config_.reset(new TraceConfig()); 1187 trace_config_->trace_file = runtime_options.ReleaseOrDefault(Opt::MethodTraceFile); 1188 trace_config_->trace_file_size = runtime_options.ReleaseOrDefault(Opt::MethodTraceFileSize); 1189 trace_config_->trace_mode = Trace::TraceMode::kMethodTracing; 1190 trace_config_->trace_output_mode = runtime_options.Exists(Opt::MethodTraceStreaming) ? 1191 Trace::TraceOutputMode::kStreaming : 1192 Trace::TraceOutputMode::kFile; 1193 } 1194 1195 { 1196 auto&& profiler_options = runtime_options.ReleaseOrDefault(Opt::ProfilerOpts); 1197 profile_output_filename_ = profiler_options.output_file_name_; 1198 1199 // TODO: Don't do this, just change ProfilerOptions to include the output file name? 1200 ProfilerOptions other_options( 1201 profiler_options.enabled_, 1202 profiler_options.period_s_, 1203 profiler_options.duration_s_, 1204 profiler_options.interval_us_, 1205 profiler_options.backoff_coefficient_, 1206 profiler_options.start_immediately_, 1207 profiler_options.top_k_threshold_, 1208 profiler_options.top_k_change_threshold_, 1209 profiler_options.profile_type_, 1210 profiler_options.max_stack_depth_); 1211 1212 profiler_options_ = other_options; 1213 } 1214 1215 // TODO: move this to just be an Trace::Start argument 1216 Trace::SetDefaultClockSource(runtime_options.GetOrDefault(Opt::ProfileClock)); 1217 1218 // Pre-allocate an OutOfMemoryError for the double-OOME case. 1219 self->ThrowNewException("Ljava/lang/OutOfMemoryError;", 1220 "OutOfMemoryError thrown while trying to throw OutOfMemoryError; " 1221 "no stack trace available"); 1222 pre_allocated_OutOfMemoryError_ = GcRoot<mirror::Throwable>(self->GetException()); 1223 self->ClearException(); 1224 1225 // Pre-allocate a NoClassDefFoundError for the common case of failing to find a system class 1226 // ahead of checking the application's class loader. 1227 self->ThrowNewException("Ljava/lang/NoClassDefFoundError;", 1228 "Class not found using the boot class loader; no stack trace available"); 1229 pre_allocated_NoClassDefFoundError_ = GcRoot<mirror::Throwable>(self->GetException()); 1230 self->ClearException(); 1231 1232 // Look for a native bridge. 1233 // 1234 // The intended flow here is, in the case of a running system: 1235 // 1236 // Runtime::Init() (zygote): 1237 // LoadNativeBridge -> dlopen from cmd line parameter. 1238 // | 1239 // V 1240 // Runtime::Start() (zygote): 1241 // No-op wrt native bridge. 1242 // | 1243 // | start app 1244 // V 1245 // DidForkFromZygote(action) 1246 // action = kUnload -> dlclose native bridge. 1247 // action = kInitialize -> initialize library 1248 // 1249 // 1250 // The intended flow here is, in the case of a simple dalvikvm call: 1251 // 1252 // Runtime::Init(): 1253 // LoadNativeBridge -> dlopen from cmd line parameter. 1254 // | 1255 // V 1256 // Runtime::Start(): 1257 // DidForkFromZygote(kInitialize) -> try to initialize any native bridge given. 1258 // No-op wrt native bridge. 1259 { 1260 std::string native_bridge_file_name = runtime_options.ReleaseOrDefault(Opt::NativeBridge); 1261 is_native_bridge_loaded_ = LoadNativeBridge(native_bridge_file_name); 1262 } 1263 1264 VLOG(startup) << "Runtime::Init exiting"; 1265 1266 return true; 1267} 1268 1269void Runtime::InitNativeMethods() { 1270 VLOG(startup) << "Runtime::InitNativeMethods entering"; 1271 Thread* self = Thread::Current(); 1272 JNIEnv* env = self->GetJniEnv(); 1273 1274 // Must be in the kNative state for calling native methods (JNI_OnLoad code). 1275 CHECK_EQ(self->GetState(), kNative); 1276 1277 // First set up JniConstants, which is used by both the runtime's built-in native 1278 // methods and libcore. 1279 JniConstants::init(env); 1280 1281 // Then set up the native methods provided by the runtime itself. 1282 RegisterRuntimeNativeMethods(env); 1283 1284 // Initialize classes used in JNI. The initialization requires runtime native 1285 // methods to be loaded first. 1286 WellKnownClasses::Init(env); 1287 1288 // Then set up libjavacore / libopenjdk, which are just a regular JNI libraries with 1289 // a regular JNI_OnLoad. Most JNI libraries can just use System.loadLibrary, but 1290 // libcore can't because it's the library that implements System.loadLibrary! 1291 { 1292 std::string error_msg; 1293 if (!java_vm_->LoadNativeLibrary(env, "libjavacore.so", nullptr, nullptr, &error_msg)) { 1294 LOG(FATAL) << "LoadNativeLibrary failed for \"libjavacore.so\": " << error_msg; 1295 } 1296 } 1297 { 1298 constexpr const char* kOpenJdkLibrary = kIsDebugBuild 1299 ? "libopenjdkd.so" 1300 : "libopenjdk.so"; 1301 std::string error_msg; 1302 if (!java_vm_->LoadNativeLibrary(env, kOpenJdkLibrary, nullptr, nullptr, &error_msg)) { 1303 LOG(FATAL) << "LoadNativeLibrary failed for \"" << kOpenJdkLibrary << "\": " << error_msg; 1304 } 1305 } 1306 1307 // Initialize well known classes that may invoke runtime native methods. 1308 WellKnownClasses::LateInit(env); 1309 1310 VLOG(startup) << "Runtime::InitNativeMethods exiting"; 1311} 1312 1313void Runtime::ReclaimArenaPoolMemory() { 1314 arena_pool_->LockReclaimMemory(); 1315} 1316 1317void Runtime::InitThreadGroups(Thread* self) { 1318 JNIEnvExt* env = self->GetJniEnv(); 1319 ScopedJniEnvLocalRefState env_state(env); 1320 main_thread_group_ = 1321 env->NewGlobalRef(env->GetStaticObjectField( 1322 WellKnownClasses::java_lang_ThreadGroup, 1323 WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup)); 1324 CHECK(main_thread_group_ != nullptr || IsAotCompiler()); 1325 system_thread_group_ = 1326 env->NewGlobalRef(env->GetStaticObjectField( 1327 WellKnownClasses::java_lang_ThreadGroup, 1328 WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup)); 1329 CHECK(system_thread_group_ != nullptr || IsAotCompiler()); 1330} 1331 1332jobject Runtime::GetMainThreadGroup() const { 1333 CHECK(main_thread_group_ != nullptr || IsAotCompiler()); 1334 return main_thread_group_; 1335} 1336 1337jobject Runtime::GetSystemThreadGroup() const { 1338 CHECK(system_thread_group_ != nullptr || IsAotCompiler()); 1339 return system_thread_group_; 1340} 1341 1342jobject Runtime::GetSystemClassLoader() const { 1343 CHECK(system_class_loader_ != nullptr || IsAotCompiler()); 1344 return system_class_loader_; 1345} 1346 1347void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) { 1348 register_dalvik_system_DexFile(env); 1349 register_dalvik_system_VMDebug(env); 1350 register_dalvik_system_VMRuntime(env); 1351 register_dalvik_system_VMStack(env); 1352 register_dalvik_system_ZygoteHooks(env); 1353 register_java_lang_Class(env); 1354 register_java_lang_DexCache(env); 1355 register_java_lang_Object(env); 1356 register_java_lang_ref_FinalizerReference(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 1616static ImtConflictTable::Entry empty_entry = { nullptr, nullptr }; 1617 1618ArtMethod* Runtime::CreateImtConflictMethod(LinearAlloc* linear_alloc) { 1619 auto* method = Runtime::Current()->GetClassLinker()->CreateRuntimeMethod(linear_alloc); 1620 // When compiling, the code pointer will get set later when the image is loaded. 1621 if (IsAotCompiler()) { 1622 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1623 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1624 } else { 1625 method->SetEntryPointFromQuickCompiledCode(GetQuickImtConflictStub()); 1626 method->SetImtConflictTable(reinterpret_cast<ImtConflictTable*>(&empty_entry)); 1627 } 1628 return method; 1629} 1630 1631void Runtime::SetImtConflictMethod(ArtMethod* method) { 1632 CHECK(method != nullptr); 1633 CHECK(method->IsRuntimeMethod()); 1634 imt_conflict_method_ = method; 1635 if (!IsAotCompiler()) { 1636 method->SetImtConflictTable(reinterpret_cast<ImtConflictTable*>(&empty_entry)); 1637 } 1638} 1639 1640ArtMethod* Runtime::CreateResolutionMethod() { 1641 auto* method = GetClassLinker()->CreateRuntimeMethod(GetLinearAlloc()); 1642 // When compiling, the code pointer will get set later when the image is loaded. 1643 if (IsAotCompiler()) { 1644 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1645 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1646 } else { 1647 method->SetEntryPointFromQuickCompiledCode(GetQuickResolutionStub()); 1648 } 1649 return method; 1650} 1651 1652ArtMethod* Runtime::CreateCalleeSaveMethod() { 1653 auto* method = GetClassLinker()->CreateRuntimeMethod(GetLinearAlloc()); 1654 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1655 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1656 DCHECK_NE(instruction_set_, kNone); 1657 DCHECK(method->IsRuntimeMethod()); 1658 return method; 1659} 1660 1661void Runtime::DisallowNewSystemWeaks() { 1662 CHECK(!kUseReadBarrier); 1663 monitor_list_->DisallowNewMonitors(); 1664 intern_table_->ChangeWeakRootState(gc::kWeakRootStateNoReadsOrWrites); 1665 java_vm_->DisallowNewWeakGlobals(); 1666 heap_->DisallowNewAllocationRecords(); 1667 lambda_box_table_->DisallowNewWeakBoxedLambdas(); 1668} 1669 1670void Runtime::AllowNewSystemWeaks() { 1671 CHECK(!kUseReadBarrier); 1672 monitor_list_->AllowNewMonitors(); 1673 intern_table_->ChangeWeakRootState(gc::kWeakRootStateNormal); // TODO: Do this in the sweeping. 1674 java_vm_->AllowNewWeakGlobals(); 1675 heap_->AllowNewAllocationRecords(); 1676 lambda_box_table_->AllowNewWeakBoxedLambdas(); 1677} 1678 1679void Runtime::BroadcastForNewSystemWeaks() { 1680 // This is used for the read barrier case that uses the thread-local 1681 // Thread::GetWeakRefAccessEnabled() flag. 1682 CHECK(kUseReadBarrier); 1683 monitor_list_->BroadcastForNewMonitors(); 1684 intern_table_->BroadcastForNewInterns(); 1685 java_vm_->BroadcastForNewWeakGlobals(); 1686 heap_->BroadcastForNewAllocationRecords(); 1687 lambda_box_table_->BroadcastForNewWeakBoxedLambdas(); 1688} 1689 1690void Runtime::SetInstructionSet(InstructionSet instruction_set) { 1691 instruction_set_ = instruction_set; 1692 if ((instruction_set_ == kThumb2) || (instruction_set_ == kArm)) { 1693 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1694 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1695 callee_save_method_frame_infos_[i] = arm::ArmCalleeSaveMethodFrameInfo(type); 1696 } 1697 } else if (instruction_set_ == kMips) { 1698 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1699 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1700 callee_save_method_frame_infos_[i] = mips::MipsCalleeSaveMethodFrameInfo(type); 1701 } 1702 } else if (instruction_set_ == kMips64) { 1703 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1704 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1705 callee_save_method_frame_infos_[i] = mips64::Mips64CalleeSaveMethodFrameInfo(type); 1706 } 1707 } else if (instruction_set_ == kX86) { 1708 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1709 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1710 callee_save_method_frame_infos_[i] = x86::X86CalleeSaveMethodFrameInfo(type); 1711 } 1712 } else if (instruction_set_ == kX86_64) { 1713 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1714 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1715 callee_save_method_frame_infos_[i] = x86_64::X86_64CalleeSaveMethodFrameInfo(type); 1716 } 1717 } else if (instruction_set_ == kArm64) { 1718 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1719 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1720 callee_save_method_frame_infos_[i] = arm64::Arm64CalleeSaveMethodFrameInfo(type); 1721 } 1722 } else { 1723 UNIMPLEMENTED(FATAL) << instruction_set_; 1724 } 1725} 1726 1727void Runtime::SetCalleeSaveMethod(ArtMethod* method, CalleeSaveType type) { 1728 DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType)); 1729 CHECK(method != nullptr); 1730 callee_save_methods_[type] = reinterpret_cast<uintptr_t>(method); 1731} 1732 1733void Runtime::RegisterAppInfo(const std::vector<std::string>& code_paths, 1734 const std::string& profile_output_filename, 1735 const std::string& foreign_dex_profile_path, 1736 const std::string& app_dir) { 1737 if (jit_.get() == nullptr) { 1738 // We are not JITing. Nothing to do. 1739 return; 1740 } 1741 1742 VLOG(profiler) << "Register app with " << profile_output_filename 1743 << " " << Join(code_paths, ':'); 1744 1745 if (profile_output_filename.empty()) { 1746 LOG(WARNING) << "JIT profile information will not be recorded: profile filename is empty."; 1747 return; 1748 } 1749 if (!FileExists(profile_output_filename)) { 1750 LOG(WARNING) << "JIT profile information will not be recorded: profile file does not exits."; 1751 return; 1752 } 1753 if (code_paths.empty()) { 1754 LOG(WARNING) << "JIT profile information will not be recorded: code paths is empty."; 1755 return; 1756 } 1757 1758 profile_output_filename_ = profile_output_filename; 1759 jit_->StartProfileSaver(profile_output_filename, 1760 code_paths, 1761 foreign_dex_profile_path, 1762 app_dir); 1763} 1764 1765void Runtime::NotifyDexLoaded(const std::string& dex_location) { 1766 VLOG(profiler) << "Notify dex loaded: " << dex_location; 1767 // We know that if the ProfileSaver is started then we can record profile information. 1768 if (ProfileSaver::IsStarted()) { 1769 ProfileSaver::NotifyDexUse(dex_location); 1770 } 1771} 1772 1773// Transaction support. 1774void Runtime::EnterTransactionMode(Transaction* transaction) { 1775 DCHECK(IsAotCompiler()); 1776 DCHECK(transaction != nullptr); 1777 DCHECK(!IsActiveTransaction()); 1778 preinitialization_transaction_ = transaction; 1779} 1780 1781void Runtime::ExitTransactionMode() { 1782 DCHECK(IsAotCompiler()); 1783 DCHECK(IsActiveTransaction()); 1784 preinitialization_transaction_ = nullptr; 1785} 1786 1787bool Runtime::IsTransactionAborted() const { 1788 if (!IsActiveTransaction()) { 1789 return false; 1790 } else { 1791 DCHECK(IsAotCompiler()); 1792 return preinitialization_transaction_->IsAborted(); 1793 } 1794} 1795 1796void Runtime::AbortTransactionAndThrowAbortError(Thread* self, const std::string& abort_message) { 1797 DCHECK(IsAotCompiler()); 1798 DCHECK(IsActiveTransaction()); 1799 // Throwing an exception may cause its class initialization. If we mark the transaction 1800 // aborted before that, we may warn with a false alarm. Throwing the exception before 1801 // marking the transaction aborted avoids that. 1802 preinitialization_transaction_->ThrowAbortError(self, &abort_message); 1803 preinitialization_transaction_->Abort(abort_message); 1804} 1805 1806void Runtime::ThrowTransactionAbortError(Thread* self) { 1807 DCHECK(IsAotCompiler()); 1808 DCHECK(IsActiveTransaction()); 1809 // Passing nullptr means we rethrow an exception with the earlier transaction abort message. 1810 preinitialization_transaction_->ThrowAbortError(self, nullptr); 1811} 1812 1813void Runtime::RecordWriteFieldBoolean(mirror::Object* obj, MemberOffset field_offset, 1814 uint8_t value, bool is_volatile) const { 1815 DCHECK(IsAotCompiler()); 1816 DCHECK(IsActiveTransaction()); 1817 preinitialization_transaction_->RecordWriteFieldBoolean(obj, field_offset, value, is_volatile); 1818} 1819 1820void Runtime::RecordWriteFieldByte(mirror::Object* obj, MemberOffset field_offset, 1821 int8_t value, bool is_volatile) const { 1822 DCHECK(IsAotCompiler()); 1823 DCHECK(IsActiveTransaction()); 1824 preinitialization_transaction_->RecordWriteFieldByte(obj, field_offset, value, is_volatile); 1825} 1826 1827void Runtime::RecordWriteFieldChar(mirror::Object* obj, MemberOffset field_offset, 1828 uint16_t value, bool is_volatile) const { 1829 DCHECK(IsAotCompiler()); 1830 DCHECK(IsActiveTransaction()); 1831 preinitialization_transaction_->RecordWriteFieldChar(obj, field_offset, value, is_volatile); 1832} 1833 1834void Runtime::RecordWriteFieldShort(mirror::Object* obj, MemberOffset field_offset, 1835 int16_t value, bool is_volatile) const { 1836 DCHECK(IsAotCompiler()); 1837 DCHECK(IsActiveTransaction()); 1838 preinitialization_transaction_->RecordWriteFieldShort(obj, field_offset, value, is_volatile); 1839} 1840 1841void Runtime::RecordWriteField32(mirror::Object* obj, MemberOffset field_offset, 1842 uint32_t value, bool is_volatile) const { 1843 DCHECK(IsAotCompiler()); 1844 DCHECK(IsActiveTransaction()); 1845 preinitialization_transaction_->RecordWriteField32(obj, field_offset, value, is_volatile); 1846} 1847 1848void Runtime::RecordWriteField64(mirror::Object* obj, MemberOffset field_offset, 1849 uint64_t value, bool is_volatile) const { 1850 DCHECK(IsAotCompiler()); 1851 DCHECK(IsActiveTransaction()); 1852 preinitialization_transaction_->RecordWriteField64(obj, field_offset, value, is_volatile); 1853} 1854 1855void Runtime::RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset, 1856 mirror::Object* value, bool is_volatile) const { 1857 DCHECK(IsAotCompiler()); 1858 DCHECK(IsActiveTransaction()); 1859 preinitialization_transaction_->RecordWriteFieldReference(obj, field_offset, value, is_volatile); 1860} 1861 1862void Runtime::RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const { 1863 DCHECK(IsAotCompiler()); 1864 DCHECK(IsActiveTransaction()); 1865 preinitialization_transaction_->RecordWriteArray(array, index, value); 1866} 1867 1868void Runtime::RecordStrongStringInsertion(mirror::String* s) const { 1869 DCHECK(IsAotCompiler()); 1870 DCHECK(IsActiveTransaction()); 1871 preinitialization_transaction_->RecordStrongStringInsertion(s); 1872} 1873 1874void Runtime::RecordWeakStringInsertion(mirror::String* s) const { 1875 DCHECK(IsAotCompiler()); 1876 DCHECK(IsActiveTransaction()); 1877 preinitialization_transaction_->RecordWeakStringInsertion(s); 1878} 1879 1880void Runtime::RecordStrongStringRemoval(mirror::String* s) const { 1881 DCHECK(IsAotCompiler()); 1882 DCHECK(IsActiveTransaction()); 1883 preinitialization_transaction_->RecordStrongStringRemoval(s); 1884} 1885 1886void Runtime::RecordWeakStringRemoval(mirror::String* s) const { 1887 DCHECK(IsAotCompiler()); 1888 DCHECK(IsActiveTransaction()); 1889 preinitialization_transaction_->RecordWeakStringRemoval(s); 1890} 1891 1892void Runtime::SetFaultMessage(const std::string& message) { 1893 MutexLock mu(Thread::Current(), fault_message_lock_); 1894 fault_message_ = message; 1895} 1896 1897void Runtime::AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* argv) 1898 const { 1899 if (GetInstrumentation()->InterpretOnly()) { 1900 argv->push_back("--compiler-filter=interpret-only"); 1901 } 1902 1903 // Make the dex2oat instruction set match that of the launching runtime. If we have multiple 1904 // architecture support, dex2oat may be compiled as a different instruction-set than that 1905 // currently being executed. 1906 std::string instruction_set("--instruction-set="); 1907 instruction_set += GetInstructionSetString(kRuntimeISA); 1908 argv->push_back(instruction_set); 1909 1910 std::unique_ptr<const InstructionSetFeatures> features(InstructionSetFeatures::FromCppDefines()); 1911 std::string feature_string("--instruction-set-features="); 1912 feature_string += features->GetFeatureString(); 1913 argv->push_back(feature_string); 1914} 1915 1916void Runtime::CreateJit() { 1917 CHECK(!IsAotCompiler()); 1918 if (GetInstrumentation()->IsForcedInterpretOnly()) { 1919 // Don't create JIT if forced interpret only. 1920 return; 1921 } 1922 std::string error_msg; 1923 jit_.reset(jit::Jit::Create(jit_options_.get(), &error_msg)); 1924 if (jit_.get() != nullptr) { 1925 jit_->CreateInstrumentationCache(jit_options_->GetCompileThreshold(), 1926 jit_options_->GetWarmupThreshold(), 1927 jit_options_->GetOsrThreshold()); 1928 jit_->CreateThreadPool(); 1929 1930 // Notify native debugger about the classes already loaded before the creation of the jit. 1931 jit_->DumpTypeInfoForLoadedTypes(GetClassLinker()); 1932 } else { 1933 LOG(WARNING) << "Failed to create JIT " << error_msg; 1934 } 1935} 1936 1937bool Runtime::CanRelocate() const { 1938 return !IsAotCompiler() || compiler_callbacks_->IsRelocationPossible(); 1939} 1940 1941bool Runtime::IsCompilingBootImage() const { 1942 return IsCompiler() && compiler_callbacks_->IsBootImage(); 1943} 1944 1945void Runtime::SetResolutionMethod(ArtMethod* method) { 1946 CHECK(method != nullptr); 1947 CHECK(method->IsRuntimeMethod()) << method; 1948 resolution_method_ = method; 1949} 1950 1951void Runtime::SetImtUnimplementedMethod(ArtMethod* method) { 1952 CHECK(method != nullptr); 1953 CHECK(method->IsRuntimeMethod()); 1954 imt_unimplemented_method_ = method; 1955 if (!IsAotCompiler()) { 1956 method->SetImtConflictTable(reinterpret_cast<ImtConflictTable*>(&empty_entry)); 1957 } 1958} 1959 1960bool Runtime::IsVerificationEnabled() const { 1961 return verify_ == verifier::VerifyMode::kEnable || 1962 verify_ == verifier::VerifyMode::kSoftFail; 1963} 1964 1965bool Runtime::IsVerificationSoftFail() const { 1966 return verify_ == verifier::VerifyMode::kSoftFail; 1967} 1968 1969LinearAlloc* Runtime::CreateLinearAlloc() { 1970 // For 64 bit compilers, it needs to be in low 4GB in the case where we are cross compiling for a 1971 // 32 bit target. In this case, we have 32 bit pointers in the dex cache arrays which can't hold 1972 // when we have 64 bit ArtMethod pointers. 1973 return (IsAotCompiler() && Is64BitInstructionSet(kRuntimeISA)) 1974 ? new LinearAlloc(low_4gb_arena_pool_.get()) 1975 : new LinearAlloc(arena_pool_.get()); 1976} 1977 1978double Runtime::GetHashTableMinLoadFactor() const { 1979 return is_low_memory_mode_ ? kLowMemoryMinLoadFactor : kNormalMinLoadFactor; 1980} 1981 1982double Runtime::GetHashTableMaxLoadFactor() const { 1983 return is_low_memory_mode_ ? kLowMemoryMaxLoadFactor : kNormalMaxLoadFactor; 1984} 1985 1986void Runtime::UpdateProcessState(ProcessState process_state) { 1987 ProcessState old_process_state = process_state_; 1988 process_state_ = process_state; 1989 GetHeap()->UpdateProcessState(old_process_state, process_state); 1990} 1991 1992} // namespace art 1993