runtime.cc revision 08305325d3468d5ef413eb0b36b1ea1b3746a6c4
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 is_native_bridge_loaded_(false), 208 is_native_debuggable_(false), 209 zygote_max_failed_boots_(0), 210 experimental_flags_(ExperimentalFlags::kNone), 211 oat_file_manager_(nullptr), 212 is_low_memory_mode_(false), 213 safe_mode_(false), 214 pruned_dalvik_cache_(false), 215 // Initially assume we perceive jank in case the process state is never updated. 216 process_state_(kProcessStateJankPerceptible) { 217 CheckAsmSupportOffsetsAndSizes(); 218 std::fill(callee_save_methods_, callee_save_methods_ + arraysize(callee_save_methods_), 0u); 219 interpreter::CheckInterpreterAsmConstants(); 220} 221 222Runtime::~Runtime() { 223 ScopedTrace trace("Runtime shutdown"); 224 if (is_native_bridge_loaded_) { 225 UnloadNativeBridge(); 226 } 227 228 if (dump_gc_performance_on_shutdown_) { 229 // This can't be called from the Heap destructor below because it 230 // could call RosAlloc::InspectAll() which needs the thread_list 231 // to be still alive. 232 heap_->DumpGcPerformanceInfo(LOG(INFO)); 233 } 234 235 Thread* self = Thread::Current(); 236 const bool attach_shutdown_thread = self == nullptr; 237 if (attach_shutdown_thread) { 238 CHECK(AttachCurrentThread("Shutdown thread", false, nullptr, false)); 239 self = Thread::Current(); 240 } else { 241 LOG(WARNING) << "Current thread not detached in Runtime shutdown"; 242 } 243 244 { 245 ScopedTrace trace2("Wait for shutdown cond"); 246 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 247 shutting_down_started_ = true; 248 while (threads_being_born_ > 0) { 249 shutdown_cond_->Wait(self); 250 } 251 shutting_down_ = true; 252 } 253 // Shutdown and wait for the daemons. 254 CHECK(self != nullptr); 255 if (IsFinishedStarting()) { 256 ScopedTrace trace2("Waiting for Daemons"); 257 self->ClearException(); 258 self->GetJniEnv()->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 259 WellKnownClasses::java_lang_Daemons_stop); 260 } 261 262 Trace::Shutdown(); 263 264 if (attach_shutdown_thread) { 265 DetachCurrentThread(); 266 self = nullptr; 267 } 268 269 // Make sure to let the GC complete if it is running. 270 heap_->WaitForGcToComplete(gc::kGcCauseBackground, self); 271 heap_->DeleteThreadPool(); 272 if (jit_ != nullptr) { 273 ScopedTrace trace2("Delete jit"); 274 VLOG(jit) << "Deleting jit thread pool"; 275 // Delete thread pool before the thread list since we don't want to wait forever on the 276 // JIT compiler threads. 277 jit_->DeleteThreadPool(); 278 // Similarly, stop the profile saver thread before deleting the thread list. 279 jit_->StopProfileSaver(); 280 } 281 282 // Make sure our internal threads are dead before we start tearing down things they're using. 283 Dbg::StopJdwp(); 284 delete signal_catcher_; 285 286 // Make sure all other non-daemon threads have terminated, and all daemon threads are suspended. 287 { 288 ScopedTrace trace2("Delete thread list"); 289 delete thread_list_; 290 } 291 // Delete the JIT after thread list to ensure that there is no remaining threads which could be 292 // accessing the instrumentation when we delete it. 293 if (jit_ != nullptr) { 294 VLOG(jit) << "Deleting jit"; 295 jit_.reset(nullptr); 296 } 297 298 // Shutdown the fault manager if it was initialized. 299 fault_manager.Shutdown(); 300 301 ScopedTrace trace2("Delete state"); 302 delete monitor_list_; 303 delete monitor_pool_; 304 delete class_linker_; 305 delete heap_; 306 delete intern_table_; 307 delete java_vm_; 308 delete oat_file_manager_; 309 Thread::Shutdown(); 310 QuasiAtomic::Shutdown(); 311 verifier::MethodVerifier::Shutdown(); 312 313 // Destroy allocators before shutting down the MemMap because they may use it. 314 linear_alloc_.reset(); 315 low_4gb_arena_pool_.reset(); 316 arena_pool_.reset(); 317 jit_arena_pool_.reset(); 318 MemMap::Shutdown(); 319 320 // TODO: acquire a static mutex on Runtime to avoid racing. 321 CHECK(instance_ == nullptr || instance_ == this); 322 instance_ = nullptr; 323} 324 325struct AbortState { 326 void Dump(std::ostream& os) const { 327 if (gAborting > 1) { 328 os << "Runtime aborting --- recursively, so no thread-specific detail!\n"; 329 return; 330 } 331 gAborting++; 332 os << "Runtime aborting...\n"; 333 if (Runtime::Current() == nullptr) { 334 os << "(Runtime does not yet exist!)\n"; 335 DumpNativeStack(os, GetTid(), nullptr, " native: ", nullptr); 336 return; 337 } 338 Thread* self = Thread::Current(); 339 if (self == nullptr) { 340 os << "(Aborting thread was not attached to runtime!)\n"; 341 DumpKernelStack(os, GetTid(), " kernel: ", false); 342 DumpNativeStack(os, GetTid(), nullptr, " native: ", nullptr); 343 } else { 344 os << "Aborting thread:\n"; 345 if (Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)) { 346 DumpThread(os, self); 347 } else { 348 if (Locks::mutator_lock_->SharedTryLock(self)) { 349 DumpThread(os, self); 350 Locks::mutator_lock_->SharedUnlock(self); 351 } 352 } 353 } 354 DumpAllThreads(os, self); 355 } 356 357 // No thread-safety analysis as we do explicitly test for holding the mutator lock. 358 void DumpThread(std::ostream& os, Thread* self) const NO_THREAD_SAFETY_ANALYSIS { 359 DCHECK(Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)); 360 self->Dump(os); 361 if (self->IsExceptionPending()) { 362 mirror::Throwable* exception = self->GetException(); 363 os << "Pending exception " << exception->Dump(); 364 } 365 } 366 367 void DumpAllThreads(std::ostream& os, Thread* self) const { 368 Runtime* runtime = Runtime::Current(); 369 if (runtime != nullptr) { 370 ThreadList* thread_list = runtime->GetThreadList(); 371 if (thread_list != nullptr) { 372 bool tll_already_held = Locks::thread_list_lock_->IsExclusiveHeld(self); 373 bool ml_already_held = Locks::mutator_lock_->IsSharedHeld(self); 374 if (!tll_already_held || !ml_already_held) { 375 os << "Dumping all threads without appropriate locks held:" 376 << (!tll_already_held ? " thread list lock" : "") 377 << (!ml_already_held ? " mutator lock" : "") 378 << "\n"; 379 } 380 os << "All threads:\n"; 381 thread_list->Dump(os); 382 } 383 } 384 } 385}; 386 387void Runtime::Abort() { 388 gAborting++; // set before taking any locks 389 390 // Ensure that we don't have multiple threads trying to abort at once, 391 // which would result in significantly worse diagnostics. 392 MutexLock mu(Thread::Current(), *Locks::abort_lock_); 393 394 // Get any pending output out of the way. 395 fflush(nullptr); 396 397 // Many people have difficulty distinguish aborts from crashes, 398 // so be explicit. 399 AbortState state; 400 LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state); 401 402 // Call the abort hook if we have one. 403 if (Runtime::Current() != nullptr && Runtime::Current()->abort_ != nullptr) { 404 LOG(INTERNAL_FATAL) << "Calling abort hook..."; 405 Runtime::Current()->abort_(); 406 // notreached 407 LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!"; 408 } 409 410#if defined(__GLIBC__) 411 // TODO: we ought to be able to use pthread_kill(3) here (or abort(3), 412 // which POSIX defines in terms of raise(3), which POSIX defines in terms 413 // of pthread_kill(3)). On Linux, though, libcorkscrew can't unwind through 414 // libpthread, which means the stacks we dump would be useless. Calling 415 // tgkill(2) directly avoids that. 416 syscall(__NR_tgkill, getpid(), GetTid(), SIGABRT); 417 // TODO: LLVM installs it's own SIGABRT handler so exit to be safe... Can we disable that in LLVM? 418 // If not, we could use sigaction(3) before calling tgkill(2) and lose this call to exit(3). 419 exit(1); 420#else 421 abort(); 422#endif 423 // notreached 424} 425 426void Runtime::PreZygoteFork() { 427 heap_->PreZygoteFork(); 428} 429 430void Runtime::CallExitHook(jint status) { 431 if (exit_ != nullptr) { 432 ScopedThreadStateChange tsc(Thread::Current(), kNative); 433 exit_(status); 434 LOG(WARNING) << "Exit hook returned instead of exiting!"; 435 } 436} 437 438void Runtime::SweepSystemWeaks(IsMarkedVisitor* visitor) { 439 GetInternTable()->SweepInternTableWeaks(visitor); 440 GetMonitorList()->SweepMonitorList(visitor); 441 GetJavaVM()->SweepJniWeakGlobals(visitor); 442 GetHeap()->SweepAllocationRecords(visitor); 443 GetLambdaBoxTable()->SweepWeakBoxedLambdas(visitor); 444} 445 446bool Runtime::ParseOptions(const RuntimeOptions& raw_options, 447 bool ignore_unrecognized, 448 RuntimeArgumentMap* runtime_options) { 449 InitLogging(/* argv */ nullptr); // Calls Locks::Init() as a side effect. 450 bool parsed = ParsedOptions::Parse(raw_options, ignore_unrecognized, runtime_options); 451 if (!parsed) { 452 LOG(ERROR) << "Failed to parse options"; 453 return false; 454 } 455 return true; 456} 457 458bool Runtime::Create(RuntimeArgumentMap&& runtime_options) { 459 // TODO: acquire a static mutex on Runtime to avoid racing. 460 if (Runtime::instance_ != nullptr) { 461 return false; 462 } 463 instance_ = new Runtime; 464 if (!instance_->Init(std::move(runtime_options))) { 465 // TODO: Currently deleting the instance will abort the runtime on destruction. Now This will 466 // leak memory, instead. Fix the destructor. b/19100793. 467 // delete instance_; 468 instance_ = nullptr; 469 return false; 470 } 471 return true; 472} 473 474bool Runtime::Create(const RuntimeOptions& raw_options, bool ignore_unrecognized) { 475 RuntimeArgumentMap runtime_options; 476 return ParseOptions(raw_options, ignore_unrecognized, &runtime_options) && 477 Create(std::move(runtime_options)); 478} 479 480static jobject CreateSystemClassLoader(Runtime* runtime) { 481 if (runtime->IsAotCompiler() && !runtime->GetCompilerCallbacks()->IsBootImage()) { 482 return nullptr; 483 } 484 485 ScopedObjectAccess soa(Thread::Current()); 486 ClassLinker* cl = Runtime::Current()->GetClassLinker(); 487 auto pointer_size = cl->GetImagePointerSize(); 488 489 StackHandleScope<2> hs(soa.Self()); 490 Handle<mirror::Class> class_loader_class( 491 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader))); 492 CHECK(cl->EnsureInitialized(soa.Self(), class_loader_class, true, true)); 493 494 ArtMethod* getSystemClassLoader = class_loader_class->FindDirectMethod( 495 "getSystemClassLoader", "()Ljava/lang/ClassLoader;", pointer_size); 496 CHECK(getSystemClassLoader != nullptr); 497 498 JValue result = InvokeWithJValues(soa, nullptr, soa.EncodeMethod(getSystemClassLoader), nullptr); 499 JNIEnv* env = soa.Self()->GetJniEnv(); 500 ScopedLocalRef<jobject> system_class_loader(env, soa.AddLocalReference<jobject>(result.GetL())); 501 CHECK(system_class_loader.get() != nullptr); 502 503 soa.Self()->SetClassLoaderOverride(system_class_loader.get()); 504 505 Handle<mirror::Class> thread_class( 506 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread))); 507 CHECK(cl->EnsureInitialized(soa.Self(), thread_class, true, true)); 508 509 ArtField* contextClassLoader = 510 thread_class->FindDeclaredInstanceField("contextClassLoader", "Ljava/lang/ClassLoader;"); 511 CHECK(contextClassLoader != nullptr); 512 513 // We can't run in a transaction yet. 514 contextClassLoader->SetObject<false>(soa.Self()->GetPeer(), 515 soa.Decode<mirror::ClassLoader*>(system_class_loader.get())); 516 517 return env->NewGlobalRef(system_class_loader.get()); 518} 519 520std::string Runtime::GetPatchoatExecutable() const { 521 if (!patchoat_executable_.empty()) { 522 return patchoat_executable_; 523 } 524 std::string patchoat_executable(GetAndroidRoot()); 525 patchoat_executable += (kIsDebugBuild ? "/bin/patchoatd" : "/bin/patchoat"); 526 return patchoat_executable; 527} 528 529std::string Runtime::GetCompilerExecutable() const { 530 if (!compiler_executable_.empty()) { 531 return compiler_executable_; 532 } 533 std::string compiler_executable(GetAndroidRoot()); 534 compiler_executable += (kIsDebugBuild ? "/bin/dex2oatd" : "/bin/dex2oat"); 535 return compiler_executable; 536} 537 538bool Runtime::Start() { 539 VLOG(startup) << "Runtime::Start entering"; 540 541 CHECK(!no_sig_chain_) << "A started runtime should have sig chain enabled"; 542 543 // If a debug host build, disable ptrace restriction for debugging and test timeout thread dump. 544 // Only 64-bit as prctl() may fail in 32 bit userspace on a 64-bit kernel. 545#if defined(__linux__) && !defined(__ANDROID__) && defined(__x86_64__) 546 if (kIsDebugBuild) { 547 CHECK_EQ(prctl(PR_SET_PTRACER, PR_SET_PTRACER_ANY), 0); 548 } 549#endif 550 551 // Restore main thread state to kNative as expected by native code. 552 Thread* self = Thread::Current(); 553 554 self->TransitionFromRunnableToSuspended(kNative); 555 556 started_ = true; 557 558 if (jit_options_->UseJIT()) { 559 std::string error_msg; 560 if (!IsZygote()) { 561 // If we are the zygote then we need to wait until after forking to create the code cache 562 // due to SELinux restrictions on r/w/x memory regions. 563 CreateJit(); 564 } else if (!jit::Jit::LoadCompilerLibrary(&error_msg)) { 565 // Try to load compiler pre zygote to reduce PSS. b/27744947 566 LOG(WARNING) << "Failed to load JIT compiler with error " << error_msg; 567 } 568 } 569 570 if (!IsImageDex2OatEnabled() || !GetHeap()->HasBootImageSpace()) { 571 ScopedObjectAccess soa(self); 572 StackHandleScope<1> hs(soa.Self()); 573 auto klass(hs.NewHandle<mirror::Class>(mirror::Class::GetJavaLangClass())); 574 class_linker_->EnsureInitialized(soa.Self(), klass, true, true); 575 } 576 577 // InitNativeMethods needs to be after started_ so that the classes 578 // it touches will have methods linked to the oat file if necessary. 579 { 580 ScopedTrace trace2("InitNativeMethods"); 581 InitNativeMethods(); 582 } 583 584 // Initialize well known thread group values that may be accessed threads while attaching. 585 InitThreadGroups(self); 586 587 Thread::FinishStartup(); 588 589 system_class_loader_ = CreateSystemClassLoader(this); 590 591 if (is_zygote_) { 592 if (!InitZygote()) { 593 return false; 594 } 595 } else { 596 if (is_native_bridge_loaded_) { 597 PreInitializeNativeBridge("."); 598 } 599 NativeBridgeAction action = force_native_bridge_ 600 ? NativeBridgeAction::kInitialize 601 : NativeBridgeAction::kUnload; 602 InitNonZygoteOrPostFork(self->GetJniEnv(), 603 /* is_system_server */ false, 604 action, 605 GetInstructionSetString(kRuntimeISA)); 606 } 607 608 StartDaemonThreads(); 609 610 { 611 ScopedObjectAccess soa(self); 612 self->GetJniEnv()->locals.AssertEmpty(); 613 } 614 615 VLOG(startup) << "Runtime::Start exiting"; 616 finished_starting_ = true; 617 618 if (profiler_options_.IsEnabled() && !profile_output_filename_.empty()) { 619 // User has asked for a profile using -Xenable-profiler. 620 // Create the profile file if it doesn't exist. 621 int fd = open(profile_output_filename_.c_str(), O_RDWR|O_CREAT|O_EXCL, 0660); 622 if (fd >= 0) { 623 close(fd); 624 } else if (errno != EEXIST) { 625 LOG(WARNING) << "Failed to access the profile file. Profiler disabled."; 626 } 627 } 628 629 if (trace_config_.get() != nullptr && trace_config_->trace_file != "") { 630 ScopedThreadStateChange tsc(self, kWaitingForMethodTracingStart); 631 Trace::Start(trace_config_->trace_file.c_str(), 632 -1, 633 static_cast<int>(trace_config_->trace_file_size), 634 0, 635 trace_config_->trace_output_mode, 636 trace_config_->trace_mode, 637 0); 638 } 639 640 return true; 641} 642 643void Runtime::EndThreadBirth() REQUIRES(Locks::runtime_shutdown_lock_) { 644 DCHECK_GT(threads_being_born_, 0U); 645 threads_being_born_--; 646 if (shutting_down_started_ && threads_being_born_ == 0) { 647 shutdown_cond_->Broadcast(Thread::Current()); 648 } 649} 650 651// Do zygote-mode-only initialization. 652bool Runtime::InitZygote() { 653#ifdef __linux__ 654 // zygote goes into its own process group 655 setpgid(0, 0); 656 657 // See storage config details at http://source.android.com/tech/storage/ 658 // Create private mount namespace shared by all children 659 if (unshare(CLONE_NEWNS) == -1) { 660 PLOG(ERROR) << "Failed to unshare()"; 661 return false; 662 } 663 664 // Mark rootfs as being a slave so that changes from default 665 // namespace only flow into our children. 666 if (mount("rootfs", "/", nullptr, (MS_SLAVE | MS_REC), nullptr) == -1) { 667 PLOG(ERROR) << "Failed to mount() rootfs as MS_SLAVE"; 668 return false; 669 } 670 671 // Create a staging tmpfs that is shared by our children; they will 672 // bind mount storage into their respective private namespaces, which 673 // are isolated from each other. 674 const char* target_base = getenv("EMULATED_STORAGE_TARGET"); 675 if (target_base != nullptr) { 676 if (mount("tmpfs", target_base, "tmpfs", MS_NOSUID | MS_NODEV, 677 "uid=0,gid=1028,mode=0751") == -1) { 678 PLOG(ERROR) << "Failed to mount tmpfs to " << target_base; 679 return false; 680 } 681 } 682 683 return true; 684#else 685 UNIMPLEMENTED(FATAL); 686 return false; 687#endif 688} 689 690void Runtime::InitNonZygoteOrPostFork( 691 JNIEnv* env, bool is_system_server, NativeBridgeAction action, const char* isa) { 692 is_zygote_ = false; 693 694 if (is_native_bridge_loaded_) { 695 switch (action) { 696 case NativeBridgeAction::kUnload: 697 UnloadNativeBridge(); 698 is_native_bridge_loaded_ = false; 699 break; 700 701 case NativeBridgeAction::kInitialize: 702 InitializeNativeBridge(env, isa); 703 break; 704 } 705 } 706 707 // Create the thread pools. 708 heap_->CreateThreadPool(); 709 // Reset the gc performance data at zygote fork so that the GCs 710 // before fork aren't attributed to an app. 711 heap_->ResetGcPerformanceInfo(); 712 713 if (!is_system_server && !safe_mode_ && jit_options_->UseJIT() && jit_.get() == nullptr) { 714 // Note that when running ART standalone (not zygote, nor zygote fork), 715 // the jit may have already been created. 716 CreateJit(); 717 } 718 719 StartSignalCatcher(); 720 721 // Start the JDWP thread. If the command-line debugger flags specified "suspend=y", 722 // this will pause the runtime, so we probably want this to come last. 723 Dbg::StartJdwp(); 724} 725 726void Runtime::StartSignalCatcher() { 727 if (!is_zygote_) { 728 signal_catcher_ = new SignalCatcher(stack_trace_file_); 729 } 730} 731 732bool Runtime::IsShuttingDown(Thread* self) { 733 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 734 return IsShuttingDownLocked(); 735} 736 737bool Runtime::IsDebuggable() const { 738 const OatFile* oat_file = GetOatFileManager().GetPrimaryOatFile(); 739 return oat_file != nullptr && oat_file->IsDebuggable(); 740} 741 742void Runtime::StartDaemonThreads() { 743 ScopedTrace trace(__FUNCTION__); 744 VLOG(startup) << "Runtime::StartDaemonThreads entering"; 745 746 Thread* self = Thread::Current(); 747 748 // Must be in the kNative state for calling native methods. 749 CHECK_EQ(self->GetState(), kNative); 750 751 JNIEnv* env = self->GetJniEnv(); 752 env->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 753 WellKnownClasses::java_lang_Daemons_start); 754 if (env->ExceptionCheck()) { 755 env->ExceptionDescribe(); 756 LOG(FATAL) << "Error starting java.lang.Daemons"; 757 } 758 759 VLOG(startup) << "Runtime::StartDaemonThreads exiting"; 760} 761 762// Attempts to open dex files from image(s). Given the image location, try to find the oat file 763// and open it to get the stored dex file. If the image is the first for a multi-image boot 764// classpath, go on and also open the other images. 765static bool OpenDexFilesFromImage(const std::string& image_location, 766 std::vector<std::unique_ptr<const DexFile>>* dex_files, 767 size_t* failures) { 768 DCHECK(dex_files != nullptr) << "OpenDexFilesFromImage: out-param is nullptr"; 769 770 // Use a work-list approach, so that we can easily reuse the opening code. 771 std::vector<std::string> image_locations; 772 image_locations.push_back(image_location); 773 774 for (size_t index = 0; index < image_locations.size(); ++index) { 775 std::string system_filename; 776 bool has_system = false; 777 std::string cache_filename_unused; 778 bool dalvik_cache_exists_unused; 779 bool has_cache_unused; 780 bool is_global_cache_unused; 781 bool found_image = gc::space::ImageSpace::FindImageFilename(image_locations[index].c_str(), 782 kRuntimeISA, 783 &system_filename, 784 &has_system, 785 &cache_filename_unused, 786 &dalvik_cache_exists_unused, 787 &has_cache_unused, 788 &is_global_cache_unused); 789 790 if (!found_image || !has_system) { 791 return false; 792 } 793 794 // We are falling back to non-executable use of the oat file because patching failed, presumably 795 // due to lack of space. 796 std::string oat_filename = 797 ImageHeader::GetOatLocationFromImageLocation(system_filename.c_str()); 798 std::string oat_location = 799 ImageHeader::GetOatLocationFromImageLocation(image_locations[index].c_str()); 800 // Note: in the multi-image case, the image location may end in ".jar," and not ".art." Handle 801 // that here. 802 if (EndsWith(oat_location, ".jar")) { 803 oat_location.replace(oat_location.length() - 3, 3, "oat"); 804 } 805 806 std::unique_ptr<File> file(OS::OpenFileForReading(oat_filename.c_str())); 807 if (file.get() == nullptr) { 808 return false; 809 } 810 std::string error_msg; 811 std::unique_ptr<ElfFile> elf_file(ElfFile::Open(file.release(), 812 false, 813 false, 814 /*low_4gb*/false, 815 &error_msg)); 816 if (elf_file.get() == nullptr) { 817 return false; 818 } 819 std::unique_ptr<const OatFile> oat_file( 820 OatFile::OpenWithElfFile(elf_file.release(), oat_location, nullptr, &error_msg)); 821 if (oat_file == nullptr) { 822 LOG(WARNING) << "Unable to use '" << oat_filename << "' because " << error_msg; 823 return false; 824 } 825 826 for (const OatFile::OatDexFile* oat_dex_file : oat_file->GetOatDexFiles()) { 827 if (oat_dex_file == nullptr) { 828 *failures += 1; 829 continue; 830 } 831 std::unique_ptr<const DexFile> dex_file = oat_dex_file->OpenDexFile(&error_msg); 832 if (dex_file.get() == nullptr) { 833 *failures += 1; 834 } else { 835 dex_files->push_back(std::move(dex_file)); 836 } 837 } 838 839 if (index == 0) { 840 // First file. See if this is a multi-image environment, and if so, enqueue the other images. 841 const OatHeader& boot_oat_header = oat_file->GetOatHeader(); 842 const char* boot_cp = boot_oat_header.GetStoreValueByKey(OatHeader::kBootClassPath); 843 if (boot_cp != nullptr) { 844 gc::space::ImageSpace::CreateMultiImageLocations(image_locations[0], 845 boot_cp, 846 &image_locations); 847 } 848 } 849 850 Runtime::Current()->GetOatFileManager().RegisterOatFile(std::move(oat_file)); 851 } 852 return true; 853} 854 855 856static size_t OpenDexFiles(const std::vector<std::string>& dex_filenames, 857 const std::vector<std::string>& dex_locations, 858 const std::string& image_location, 859 std::vector<std::unique_ptr<const DexFile>>* dex_files) { 860 DCHECK(dex_files != nullptr) << "OpenDexFiles: out-param is nullptr"; 861 size_t failure_count = 0; 862 if (!image_location.empty() && OpenDexFilesFromImage(image_location, dex_files, &failure_count)) { 863 return failure_count; 864 } 865 failure_count = 0; 866 for (size_t i = 0; i < dex_filenames.size(); i++) { 867 const char* dex_filename = dex_filenames[i].c_str(); 868 const char* dex_location = dex_locations[i].c_str(); 869 std::string error_msg; 870 if (!OS::FileExists(dex_filename)) { 871 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 872 continue; 873 } 874 if (!DexFile::Open(dex_filename, dex_location, &error_msg, dex_files)) { 875 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 876 ++failure_count; 877 } 878 } 879 return failure_count; 880} 881 882void Runtime::SetSentinel(mirror::Object* sentinel) { 883 CHECK(sentinel_.Read() == nullptr); 884 CHECK(sentinel != nullptr); 885 CHECK(!heap_->IsMovableObject(sentinel)); 886 sentinel_ = GcRoot<mirror::Object>(sentinel); 887} 888 889bool Runtime::Init(RuntimeArgumentMap&& runtime_options_in) { 890 RuntimeArgumentMap runtime_options(std::move(runtime_options_in)); 891 ScopedTrace trace(__FUNCTION__); 892 CHECK_EQ(sysconf(_SC_PAGE_SIZE), kPageSize); 893 894 MemMap::Init(); 895 896 using Opt = RuntimeArgumentMap; 897 VLOG(startup) << "Runtime::Init -verbose:startup enabled"; 898 899 QuasiAtomic::Startup(); 900 901 oat_file_manager_ = new OatFileManager; 902 903 Monitor::Init(runtime_options.GetOrDefault(Opt::LockProfThreshold), 904 runtime_options.GetOrDefault(Opt::HookIsSensitiveThread)); 905 906 boot_class_path_string_ = runtime_options.ReleaseOrDefault(Opt::BootClassPath); 907 class_path_string_ = runtime_options.ReleaseOrDefault(Opt::ClassPath); 908 properties_ = runtime_options.ReleaseOrDefault(Opt::PropertiesList); 909 910 compiler_callbacks_ = runtime_options.GetOrDefault(Opt::CompilerCallbacksPtr); 911 patchoat_executable_ = runtime_options.ReleaseOrDefault(Opt::PatchOat); 912 must_relocate_ = runtime_options.GetOrDefault(Opt::Relocate); 913 is_zygote_ = runtime_options.Exists(Opt::Zygote); 914 is_explicit_gc_disabled_ = runtime_options.Exists(Opt::DisableExplicitGC); 915 dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::Dex2Oat); 916 image_dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::ImageDex2Oat); 917 dump_native_stack_on_sig_quit_ = runtime_options.GetOrDefault(Opt::DumpNativeStackOnSigQuit); 918 919 vfprintf_ = runtime_options.GetOrDefault(Opt::HookVfprintf); 920 exit_ = runtime_options.GetOrDefault(Opt::HookExit); 921 abort_ = runtime_options.GetOrDefault(Opt::HookAbort); 922 923 default_stack_size_ = runtime_options.GetOrDefault(Opt::StackSize); 924 stack_trace_file_ = runtime_options.ReleaseOrDefault(Opt::StackTraceFile); 925 926 compiler_executable_ = runtime_options.ReleaseOrDefault(Opt::Compiler); 927 compiler_options_ = runtime_options.ReleaseOrDefault(Opt::CompilerOptions); 928 image_compiler_options_ = runtime_options.ReleaseOrDefault(Opt::ImageCompilerOptions); 929 image_location_ = runtime_options.GetOrDefault(Opt::Image); 930 931 max_spins_before_thin_lock_inflation_ = 932 runtime_options.GetOrDefault(Opt::MaxSpinsBeforeThinLockInflation); 933 934 monitor_list_ = new MonitorList; 935 monitor_pool_ = MonitorPool::Create(); 936 thread_list_ = new ThreadList; 937 intern_table_ = new InternTable; 938 939 verify_ = runtime_options.GetOrDefault(Opt::Verify); 940 allow_dex_file_fallback_ = !runtime_options.Exists(Opt::NoDexFileFallback); 941 942 no_sig_chain_ = runtime_options.Exists(Opt::NoSigChain); 943 force_native_bridge_ = runtime_options.Exists(Opt::ForceNativeBridge); 944 945 Split(runtime_options.GetOrDefault(Opt::CpuAbiList), ',', &cpu_abilist_); 946 947 fingerprint_ = runtime_options.ReleaseOrDefault(Opt::Fingerprint); 948 949 if (runtime_options.GetOrDefault(Opt::Interpret)) { 950 GetInstrumentation()->ForceInterpretOnly(); 951 } 952 953 zygote_max_failed_boots_ = runtime_options.GetOrDefault(Opt::ZygoteMaxFailedBoots); 954 experimental_flags_ = runtime_options.GetOrDefault(Opt::Experimental); 955 is_low_memory_mode_ = runtime_options.Exists(Opt::LowMemoryMode); 956 957 { 958 CompilerFilter::Filter filter; 959 std::string filter_str = runtime_options.GetOrDefault(Opt::OatFileManagerCompilerFilter); 960 if (!CompilerFilter::ParseCompilerFilter(filter_str.c_str(), &filter)) { 961 LOG(ERROR) << "Cannot parse compiler filter " << filter_str; 962 return false; 963 } 964 OatFileManager::SetCompilerFilter(filter); 965 } 966 967 XGcOption xgc_option = runtime_options.GetOrDefault(Opt::GcOption); 968 heap_ = new gc::Heap(runtime_options.GetOrDefault(Opt::MemoryInitialSize), 969 runtime_options.GetOrDefault(Opt::HeapGrowthLimit), 970 runtime_options.GetOrDefault(Opt::HeapMinFree), 971 runtime_options.GetOrDefault(Opt::HeapMaxFree), 972 runtime_options.GetOrDefault(Opt::HeapTargetUtilization), 973 runtime_options.GetOrDefault(Opt::ForegroundHeapGrowthMultiplier), 974 runtime_options.GetOrDefault(Opt::MemoryMaximumSize), 975 runtime_options.GetOrDefault(Opt::NonMovingSpaceCapacity), 976 runtime_options.GetOrDefault(Opt::Image), 977 runtime_options.GetOrDefault(Opt::ImageInstructionSet), 978 xgc_option.collector_type_, 979 runtime_options.GetOrDefault(Opt::BackgroundGc), 980 runtime_options.GetOrDefault(Opt::LargeObjectSpace), 981 runtime_options.GetOrDefault(Opt::LargeObjectThreshold), 982 runtime_options.GetOrDefault(Opt::ParallelGCThreads), 983 runtime_options.GetOrDefault(Opt::ConcGCThreads), 984 runtime_options.Exists(Opt::LowMemoryMode), 985 runtime_options.GetOrDefault(Opt::LongPauseLogThreshold), 986 runtime_options.GetOrDefault(Opt::LongGCLogThreshold), 987 runtime_options.Exists(Opt::IgnoreMaxFootprint), 988 runtime_options.GetOrDefault(Opt::UseTLAB), 989 xgc_option.verify_pre_gc_heap_, 990 xgc_option.verify_pre_sweeping_heap_, 991 xgc_option.verify_post_gc_heap_, 992 xgc_option.verify_pre_gc_rosalloc_, 993 xgc_option.verify_pre_sweeping_rosalloc_, 994 xgc_option.verify_post_gc_rosalloc_, 995 xgc_option.gcstress_, 996 runtime_options.GetOrDefault(Opt::EnableHSpaceCompactForOOM), 997 runtime_options.GetOrDefault(Opt::HSpaceCompactForOOMMinIntervalsMs)); 998 999 if (!heap_->HasBootImageSpace() && !allow_dex_file_fallback_) { 1000 LOG(ERROR) << "Dex file fallback disabled, cannot continue without image."; 1001 return false; 1002 } 1003 1004 dump_gc_performance_on_shutdown_ = runtime_options.Exists(Opt::DumpGCPerformanceOnShutdown); 1005 1006 if (runtime_options.Exists(Opt::JdwpOptions)) { 1007 Dbg::ConfigureJdwp(runtime_options.GetOrDefault(Opt::JdwpOptions)); 1008 } 1009 1010 jit_options_.reset(jit::JitOptions::CreateFromRuntimeArguments(runtime_options)); 1011 if (IsAotCompiler()) { 1012 // If we are already the compiler at this point, we must be dex2oat. Don't create the jit in 1013 // this case. 1014 // If runtime_options doesn't have UseJIT set to true then CreateFromRuntimeArguments returns 1015 // null and we don't create the jit. 1016 jit_options_->SetUseJIT(false); 1017 } 1018 1019 // Allocate a global table of boxed lambda objects <-> closures. 1020 lambda_box_table_ = MakeUnique<lambda::BoxTable>(); 1021 1022 // Use MemMap arena pool for jit, malloc otherwise. Malloc arenas are faster to allocate but 1023 // can't be trimmed as easily. 1024 const bool use_malloc = IsAotCompiler(); 1025 arena_pool_.reset(new ArenaPool(use_malloc, /* low_4gb */ false)); 1026 jit_arena_pool_.reset( 1027 new ArenaPool(/* use_malloc */ false, /* low_4gb */ false, "CompilerMetadata")); 1028 1029 if (IsAotCompiler() && Is64BitInstructionSet(kRuntimeISA)) { 1030 // 4gb, no malloc. Explanation in header. 1031 low_4gb_arena_pool_.reset(new ArenaPool(/* use_malloc */ false, /* low_4gb */ true)); 1032 } 1033 linear_alloc_.reset(CreateLinearAlloc()); 1034 1035 BlockSignals(); 1036 InitPlatformSignalHandlers(); 1037 1038 // Change the implicit checks flags based on runtime architecture. 1039 switch (kRuntimeISA) { 1040 case kArm: 1041 case kThumb2: 1042 case kX86: 1043 case kArm64: 1044 case kX86_64: 1045 case kMips: 1046 case kMips64: 1047 implicit_null_checks_ = true; 1048 // Installing stack protection does not play well with valgrind. 1049 implicit_so_checks_ = !(RUNNING_ON_MEMORY_TOOL && kMemoryToolIsValgrind); 1050 break; 1051 default: 1052 // Keep the defaults. 1053 break; 1054 } 1055 1056 if (!no_sig_chain_) { 1057 // Dex2Oat's Runtime does not need the signal chain or the fault handler. 1058 1059 // Initialize the signal chain so that any calls to sigaction get 1060 // correctly routed to the next in the chain regardless of whether we 1061 // have claimed the signal or not. 1062 InitializeSignalChain(); 1063 1064 if (implicit_null_checks_ || implicit_so_checks_ || implicit_suspend_checks_) { 1065 fault_manager.Init(); 1066 1067 // These need to be in a specific order. The null point check handler must be 1068 // after the suspend check and stack overflow check handlers. 1069 // 1070 // Note: the instances attach themselves to the fault manager and are handled by it. The manager 1071 // will delete the instance on Shutdown(). 1072 if (implicit_suspend_checks_) { 1073 new SuspensionHandler(&fault_manager); 1074 } 1075 1076 if (implicit_so_checks_) { 1077 new StackOverflowHandler(&fault_manager); 1078 } 1079 1080 if (implicit_null_checks_) { 1081 new NullPointerHandler(&fault_manager); 1082 } 1083 1084 if (kEnableJavaStackTraceHandler) { 1085 new JavaStackTraceHandler(&fault_manager); 1086 } 1087 } 1088 } 1089 1090 java_vm_ = new JavaVMExt(this, runtime_options); 1091 1092 Thread::Startup(); 1093 1094 // ClassLinker needs an attached thread, but we can't fully attach a thread without creating 1095 // objects. We can't supply a thread group yet; it will be fixed later. Since we are the main 1096 // thread, we do not get a java peer. 1097 Thread* self = Thread::Attach("main", false, nullptr, false); 1098 CHECK_EQ(self->GetThreadId(), ThreadList::kMainThreadId); 1099 CHECK(self != nullptr); 1100 1101 // Set us to runnable so tools using a runtime can allocate and GC by default 1102 self->TransitionFromSuspendedToRunnable(); 1103 1104 // Now we're attached, we can take the heap locks and validate the heap. 1105 GetHeap()->EnableObjectValidation(); 1106 1107 CHECK_GE(GetHeap()->GetContinuousSpaces().size(), 1U); 1108 class_linker_ = new ClassLinker(intern_table_); 1109 if (GetHeap()->HasBootImageSpace()) { 1110 std::string error_msg; 1111 bool result = class_linker_->InitFromBootImage(&error_msg); 1112 if (!result) { 1113 LOG(ERROR) << "Could not initialize from image: " << error_msg; 1114 return false; 1115 } 1116 if (kIsDebugBuild) { 1117 for (auto image_space : GetHeap()->GetBootImageSpaces()) { 1118 image_space->VerifyImageAllocations(); 1119 } 1120 } 1121 if (boot_class_path_string_.empty()) { 1122 // The bootclasspath is not explicitly specified: construct it from the loaded dex files. 1123 const std::vector<const DexFile*>& boot_class_path = GetClassLinker()->GetBootClassPath(); 1124 std::vector<std::string> dex_locations; 1125 dex_locations.reserve(boot_class_path.size()); 1126 for (const DexFile* dex_file : boot_class_path) { 1127 dex_locations.push_back(dex_file->GetLocation()); 1128 } 1129 boot_class_path_string_ = Join(dex_locations, ':'); 1130 } 1131 { 1132 ScopedTrace trace2("AddImageStringsToTable"); 1133 GetInternTable()->AddImagesStringsToTable(heap_->GetBootImageSpaces()); 1134 } 1135 { 1136 ScopedTrace trace2("MoveImageClassesToClassTable"); 1137 GetClassLinker()->AddBootImageClassesToClassTable(); 1138 } 1139 } else { 1140 std::vector<std::string> dex_filenames; 1141 Split(boot_class_path_string_, ':', &dex_filenames); 1142 1143 std::vector<std::string> dex_locations; 1144 if (!runtime_options.Exists(Opt::BootClassPathLocations)) { 1145 dex_locations = dex_filenames; 1146 } else { 1147 dex_locations = runtime_options.GetOrDefault(Opt::BootClassPathLocations); 1148 CHECK_EQ(dex_filenames.size(), dex_locations.size()); 1149 } 1150 1151 std::vector<std::unique_ptr<const DexFile>> boot_class_path; 1152 if (runtime_options.Exists(Opt::BootClassPathDexList)) { 1153 boot_class_path.swap(*runtime_options.GetOrDefault(Opt::BootClassPathDexList)); 1154 } else { 1155 OpenDexFiles(dex_filenames, 1156 dex_locations, 1157 runtime_options.GetOrDefault(Opt::Image), 1158 &boot_class_path); 1159 } 1160 instruction_set_ = runtime_options.GetOrDefault(Opt::ImageInstructionSet); 1161 std::string error_msg; 1162 if (!class_linker_->InitWithoutImage(std::move(boot_class_path), &error_msg)) { 1163 LOG(ERROR) << "Could not initialize without image: " << error_msg; 1164 return false; 1165 } 1166 1167 // TODO: Should we move the following to InitWithoutImage? 1168 SetInstructionSet(instruction_set_); 1169 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 1170 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 1171 if (!HasCalleeSaveMethod(type)) { 1172 SetCalleeSaveMethod(CreateCalleeSaveMethod(), type); 1173 } 1174 } 1175 } 1176 1177 CHECK(class_linker_ != nullptr); 1178 1179 verifier::MethodVerifier::Init(); 1180 1181 if (runtime_options.Exists(Opt::MethodTrace)) { 1182 trace_config_.reset(new TraceConfig()); 1183 trace_config_->trace_file = runtime_options.ReleaseOrDefault(Opt::MethodTraceFile); 1184 trace_config_->trace_file_size = runtime_options.ReleaseOrDefault(Opt::MethodTraceFileSize); 1185 trace_config_->trace_mode = Trace::TraceMode::kMethodTracing; 1186 trace_config_->trace_output_mode = runtime_options.Exists(Opt::MethodTraceStreaming) ? 1187 Trace::TraceOutputMode::kStreaming : 1188 Trace::TraceOutputMode::kFile; 1189 } 1190 1191 { 1192 auto&& profiler_options = runtime_options.ReleaseOrDefault(Opt::ProfilerOpts); 1193 profile_output_filename_ = profiler_options.output_file_name_; 1194 1195 // TODO: Don't do this, just change ProfilerOptions to include the output file name? 1196 ProfilerOptions other_options( 1197 profiler_options.enabled_, 1198 profiler_options.period_s_, 1199 profiler_options.duration_s_, 1200 profiler_options.interval_us_, 1201 profiler_options.backoff_coefficient_, 1202 profiler_options.start_immediately_, 1203 profiler_options.top_k_threshold_, 1204 profiler_options.top_k_change_threshold_, 1205 profiler_options.profile_type_, 1206 profiler_options.max_stack_depth_); 1207 1208 profiler_options_ = other_options; 1209 } 1210 1211 // TODO: move this to just be an Trace::Start argument 1212 Trace::SetDefaultClockSource(runtime_options.GetOrDefault(Opt::ProfileClock)); 1213 1214 // Pre-allocate an OutOfMemoryError for the double-OOME case. 1215 self->ThrowNewException("Ljava/lang/OutOfMemoryError;", 1216 "OutOfMemoryError thrown while trying to throw OutOfMemoryError; " 1217 "no stack trace available"); 1218 pre_allocated_OutOfMemoryError_ = GcRoot<mirror::Throwable>(self->GetException()); 1219 self->ClearException(); 1220 1221 // Pre-allocate a NoClassDefFoundError for the common case of failing to find a system class 1222 // ahead of checking the application's class loader. 1223 self->ThrowNewException("Ljava/lang/NoClassDefFoundError;", 1224 "Class not found using the boot class loader; no stack trace available"); 1225 pre_allocated_NoClassDefFoundError_ = GcRoot<mirror::Throwable>(self->GetException()); 1226 self->ClearException(); 1227 1228 // Look for a native bridge. 1229 // 1230 // The intended flow here is, in the case of a running system: 1231 // 1232 // Runtime::Init() (zygote): 1233 // LoadNativeBridge -> dlopen from cmd line parameter. 1234 // | 1235 // V 1236 // Runtime::Start() (zygote): 1237 // No-op wrt native bridge. 1238 // | 1239 // | start app 1240 // V 1241 // DidForkFromZygote(action) 1242 // action = kUnload -> dlclose native bridge. 1243 // action = kInitialize -> initialize library 1244 // 1245 // 1246 // The intended flow here is, in the case of a simple dalvikvm call: 1247 // 1248 // Runtime::Init(): 1249 // LoadNativeBridge -> dlopen from cmd line parameter. 1250 // | 1251 // V 1252 // Runtime::Start(): 1253 // DidForkFromZygote(kInitialize) -> try to initialize any native bridge given. 1254 // No-op wrt native bridge. 1255 { 1256 std::string native_bridge_file_name = runtime_options.ReleaseOrDefault(Opt::NativeBridge); 1257 is_native_bridge_loaded_ = LoadNativeBridge(native_bridge_file_name); 1258 } 1259 1260 VLOG(startup) << "Runtime::Init exiting"; 1261 1262 return true; 1263} 1264 1265void Runtime::InitNativeMethods() { 1266 VLOG(startup) << "Runtime::InitNativeMethods entering"; 1267 Thread* self = Thread::Current(); 1268 JNIEnv* env = self->GetJniEnv(); 1269 1270 // Must be in the kNative state for calling native methods (JNI_OnLoad code). 1271 CHECK_EQ(self->GetState(), kNative); 1272 1273 // First set up JniConstants, which is used by both the runtime's built-in native 1274 // methods and libcore. 1275 JniConstants::init(env); 1276 1277 // Then set up the native methods provided by the runtime itself. 1278 RegisterRuntimeNativeMethods(env); 1279 1280 // Initialize classes used in JNI. The initialization requires runtime native 1281 // methods to be loaded first. 1282 WellKnownClasses::Init(env); 1283 1284 // Then set up libjavacore / libopenjdk, which are just a regular JNI libraries with 1285 // a regular JNI_OnLoad. Most JNI libraries can just use System.loadLibrary, but 1286 // libcore can't because it's the library that implements System.loadLibrary! 1287 { 1288 std::string error_msg; 1289 if (!java_vm_->LoadNativeLibrary(env, "libjavacore.so", nullptr, nullptr, &error_msg)) { 1290 LOG(FATAL) << "LoadNativeLibrary failed for \"libjavacore.so\": " << error_msg; 1291 } 1292 } 1293 { 1294 constexpr const char* kOpenJdkLibrary = kIsDebugBuild 1295 ? "libopenjdkd.so" 1296 : "libopenjdk.so"; 1297 std::string error_msg; 1298 if (!java_vm_->LoadNativeLibrary(env, kOpenJdkLibrary, nullptr, nullptr, &error_msg)) { 1299 LOG(FATAL) << "LoadNativeLibrary failed for \"" << kOpenJdkLibrary << "\": " << error_msg; 1300 } 1301 } 1302 1303 // Initialize well known classes that may invoke runtime native methods. 1304 WellKnownClasses::LateInit(env); 1305 1306 VLOG(startup) << "Runtime::InitNativeMethods exiting"; 1307} 1308 1309void Runtime::ReclaimArenaPoolMemory() { 1310 arena_pool_->LockReclaimMemory(); 1311} 1312 1313void Runtime::InitThreadGroups(Thread* self) { 1314 JNIEnvExt* env = self->GetJniEnv(); 1315 ScopedJniEnvLocalRefState env_state(env); 1316 main_thread_group_ = 1317 env->NewGlobalRef(env->GetStaticObjectField( 1318 WellKnownClasses::java_lang_ThreadGroup, 1319 WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup)); 1320 CHECK(main_thread_group_ != nullptr || IsAotCompiler()); 1321 system_thread_group_ = 1322 env->NewGlobalRef(env->GetStaticObjectField( 1323 WellKnownClasses::java_lang_ThreadGroup, 1324 WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup)); 1325 CHECK(system_thread_group_ != nullptr || IsAotCompiler()); 1326} 1327 1328jobject Runtime::GetMainThreadGroup() const { 1329 CHECK(main_thread_group_ != nullptr || IsAotCompiler()); 1330 return main_thread_group_; 1331} 1332 1333jobject Runtime::GetSystemThreadGroup() const { 1334 CHECK(system_thread_group_ != nullptr || IsAotCompiler()); 1335 return system_thread_group_; 1336} 1337 1338jobject Runtime::GetSystemClassLoader() const { 1339 CHECK(system_class_loader_ != nullptr || IsAotCompiler()); 1340 return system_class_loader_; 1341} 1342 1343void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) { 1344 register_dalvik_system_DexFile(env); 1345 register_dalvik_system_VMDebug(env); 1346 register_dalvik_system_VMRuntime(env); 1347 register_dalvik_system_VMStack(env); 1348 register_dalvik_system_ZygoteHooks(env); 1349 register_java_lang_Class(env); 1350 register_java_lang_DexCache(env); 1351 register_java_lang_Object(env); 1352 register_java_lang_ref_FinalizerReference(env); 1353 register_java_lang_reflect_AbstractMethod(env); 1354 register_java_lang_reflect_Array(env); 1355 register_java_lang_reflect_Constructor(env); 1356 register_java_lang_reflect_Field(env); 1357 register_java_lang_reflect_Method(env); 1358 register_java_lang_reflect_Proxy(env); 1359 register_java_lang_ref_Reference(env); 1360 register_java_lang_String(env); 1361 register_java_lang_StringFactory(env); 1362 register_java_lang_System(env); 1363 register_java_lang_Thread(env); 1364 register_java_lang_Throwable(env); 1365 register_java_lang_VMClassLoader(env); 1366 register_java_util_concurrent_atomic_AtomicLong(env); 1367 register_libcore_util_CharsetUtils(env); 1368 register_org_apache_harmony_dalvik_ddmc_DdmServer(env); 1369 register_org_apache_harmony_dalvik_ddmc_DdmVmInternal(env); 1370 register_sun_misc_Unsafe(env); 1371} 1372 1373void Runtime::DumpForSigQuit(std::ostream& os) { 1374 // Dumping for SIGQIT may cause deadlocks if the the debugger is active. b/26118154 1375 if (Dbg::IsDebuggerActive()) { 1376 LOG(INFO) << "Skipping DumpForSigQuit due to active debugger"; 1377 return; 1378 } 1379 GetClassLinker()->DumpForSigQuit(os); 1380 GetInternTable()->DumpForSigQuit(os); 1381 GetJavaVM()->DumpForSigQuit(os); 1382 GetHeap()->DumpForSigQuit(os); 1383 oat_file_manager_->DumpForSigQuit(os); 1384 if (GetJit() != nullptr) { 1385 GetJit()->DumpForSigQuit(os); 1386 } else { 1387 os << "Running non JIT\n"; 1388 } 1389 TrackedAllocators::Dump(os); 1390 os << "\n"; 1391 1392 thread_list_->DumpForSigQuit(os); 1393 BaseMutex::DumpAll(os); 1394} 1395 1396void Runtime::DumpLockHolders(std::ostream& os) { 1397 uint64_t mutator_lock_owner = Locks::mutator_lock_->GetExclusiveOwnerTid(); 1398 pid_t thread_list_lock_owner = GetThreadList()->GetLockOwner(); 1399 pid_t classes_lock_owner = GetClassLinker()->GetClassesLockOwner(); 1400 pid_t dex_lock_owner = GetClassLinker()->GetDexLockOwner(); 1401 if ((thread_list_lock_owner | classes_lock_owner | dex_lock_owner) != 0) { 1402 os << "Mutator lock exclusive owner tid: " << mutator_lock_owner << "\n" 1403 << "ThreadList lock owner tid: " << thread_list_lock_owner << "\n" 1404 << "ClassLinker classes lock owner tid: " << classes_lock_owner << "\n" 1405 << "ClassLinker dex lock owner tid: " << dex_lock_owner << "\n"; 1406 } 1407} 1408 1409void Runtime::SetStatsEnabled(bool new_state) { 1410 Thread* self = Thread::Current(); 1411 MutexLock mu(self, *Locks::instrument_entrypoints_lock_); 1412 if (new_state == true) { 1413 GetStats()->Clear(~0); 1414 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1415 self->GetStats()->Clear(~0); 1416 if (stats_enabled_ != new_state) { 1417 GetInstrumentation()->InstrumentQuickAllocEntryPointsLocked(); 1418 } 1419 } else if (stats_enabled_ != new_state) { 1420 GetInstrumentation()->UninstrumentQuickAllocEntryPointsLocked(); 1421 } 1422 stats_enabled_ = new_state; 1423} 1424 1425void Runtime::ResetStats(int kinds) { 1426 GetStats()->Clear(kinds & 0xffff); 1427 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1428 Thread::Current()->GetStats()->Clear(kinds >> 16); 1429} 1430 1431int32_t Runtime::GetStat(int kind) { 1432 RuntimeStats* stats; 1433 if (kind < (1<<16)) { 1434 stats = GetStats(); 1435 } else { 1436 stats = Thread::Current()->GetStats(); 1437 kind >>= 16; 1438 } 1439 switch (kind) { 1440 case KIND_ALLOCATED_OBJECTS: 1441 return stats->allocated_objects; 1442 case KIND_ALLOCATED_BYTES: 1443 return stats->allocated_bytes; 1444 case KIND_FREED_OBJECTS: 1445 return stats->freed_objects; 1446 case KIND_FREED_BYTES: 1447 return stats->freed_bytes; 1448 case KIND_GC_INVOCATIONS: 1449 return stats->gc_for_alloc_count; 1450 case KIND_CLASS_INIT_COUNT: 1451 return stats->class_init_count; 1452 case KIND_CLASS_INIT_TIME: 1453 // Convert ns to us, reduce to 32 bits. 1454 return static_cast<int>(stats->class_init_time_ns / 1000); 1455 case KIND_EXT_ALLOCATED_OBJECTS: 1456 case KIND_EXT_ALLOCATED_BYTES: 1457 case KIND_EXT_FREED_OBJECTS: 1458 case KIND_EXT_FREED_BYTES: 1459 return 0; // backward compatibility 1460 default: 1461 LOG(FATAL) << "Unknown statistic " << kind; 1462 return -1; // unreachable 1463 } 1464} 1465 1466void Runtime::BlockSignals() { 1467 SignalSet signals; 1468 signals.Add(SIGPIPE); 1469 // SIGQUIT is used to dump the runtime's state (including stack traces). 1470 signals.Add(SIGQUIT); 1471 // SIGUSR1 is used to initiate a GC. 1472 signals.Add(SIGUSR1); 1473 signals.Block(); 1474} 1475 1476bool Runtime::AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group, 1477 bool create_peer) { 1478 ScopedTrace trace(__FUNCTION__); 1479 return Thread::Attach(thread_name, as_daemon, thread_group, create_peer) != nullptr; 1480} 1481 1482void Runtime::DetachCurrentThread() { 1483 ScopedTrace trace(__FUNCTION__); 1484 Thread* self = Thread::Current(); 1485 if (self == nullptr) { 1486 LOG(FATAL) << "attempting to detach thread that is not attached"; 1487 } 1488 if (self->HasManagedStack()) { 1489 LOG(FATAL) << *Thread::Current() << " attempting to detach while still running code"; 1490 } 1491 thread_list_->Unregister(self); 1492} 1493 1494mirror::Throwable* Runtime::GetPreAllocatedOutOfMemoryError() { 1495 mirror::Throwable* oome = pre_allocated_OutOfMemoryError_.Read(); 1496 if (oome == nullptr) { 1497 LOG(ERROR) << "Failed to return pre-allocated OOME"; 1498 } 1499 return oome; 1500} 1501 1502mirror::Throwable* Runtime::GetPreAllocatedNoClassDefFoundError() { 1503 mirror::Throwable* ncdfe = pre_allocated_NoClassDefFoundError_.Read(); 1504 if (ncdfe == nullptr) { 1505 LOG(ERROR) << "Failed to return pre-allocated NoClassDefFoundError"; 1506 } 1507 return ncdfe; 1508} 1509 1510void Runtime::VisitConstantRoots(RootVisitor* visitor) { 1511 // Visit the classes held as static in mirror classes, these can be visited concurrently and only 1512 // need to be visited once per GC since they never change. 1513 mirror::Class::VisitRoots(visitor); 1514 mirror::Constructor::VisitRoots(visitor); 1515 mirror::Reference::VisitRoots(visitor); 1516 mirror::Method::VisitRoots(visitor); 1517 mirror::StackTraceElement::VisitRoots(visitor); 1518 mirror::String::VisitRoots(visitor); 1519 mirror::Throwable::VisitRoots(visitor); 1520 mirror::Field::VisitRoots(visitor); 1521 // Visit all the primitive array types classes. 1522 mirror::PrimitiveArray<uint8_t>::VisitRoots(visitor); // BooleanArray 1523 mirror::PrimitiveArray<int8_t>::VisitRoots(visitor); // ByteArray 1524 mirror::PrimitiveArray<uint16_t>::VisitRoots(visitor); // CharArray 1525 mirror::PrimitiveArray<double>::VisitRoots(visitor); // DoubleArray 1526 mirror::PrimitiveArray<float>::VisitRoots(visitor); // FloatArray 1527 mirror::PrimitiveArray<int32_t>::VisitRoots(visitor); // IntArray 1528 mirror::PrimitiveArray<int64_t>::VisitRoots(visitor); // LongArray 1529 mirror::PrimitiveArray<int16_t>::VisitRoots(visitor); // ShortArray 1530 // Visiting the roots of these ArtMethods is not currently required since all the GcRoots are 1531 // null. 1532 BufferedRootVisitor<16> buffered_visitor(visitor, RootInfo(kRootVMInternal)); 1533 const size_t pointer_size = GetClassLinker()->GetImagePointerSize(); 1534 if (HasResolutionMethod()) { 1535 resolution_method_->VisitRoots(buffered_visitor, pointer_size); 1536 } 1537 if (HasImtConflictMethod()) { 1538 imt_conflict_method_->VisitRoots(buffered_visitor, pointer_size); 1539 } 1540 if (imt_unimplemented_method_ != nullptr) { 1541 imt_unimplemented_method_->VisitRoots(buffered_visitor, pointer_size); 1542 } 1543 for (size_t i = 0; i < kLastCalleeSaveType; ++i) { 1544 auto* m = reinterpret_cast<ArtMethod*>(callee_save_methods_[i]); 1545 if (m != nullptr) { 1546 m->VisitRoots(buffered_visitor, pointer_size); 1547 } 1548 } 1549} 1550 1551void Runtime::VisitConcurrentRoots(RootVisitor* visitor, VisitRootFlags flags) { 1552 intern_table_->VisitRoots(visitor, flags); 1553 class_linker_->VisitRoots(visitor, flags); 1554 heap_->VisitAllocationRecords(visitor); 1555 if ((flags & kVisitRootFlagNewRoots) == 0) { 1556 // Guaranteed to have no new roots in the constant roots. 1557 VisitConstantRoots(visitor); 1558 } 1559 Dbg::VisitRoots(visitor); 1560} 1561 1562void Runtime::VisitTransactionRoots(RootVisitor* visitor) { 1563 if (preinitialization_transaction_ != nullptr) { 1564 preinitialization_transaction_->VisitRoots(visitor); 1565 } 1566} 1567 1568void Runtime::VisitNonThreadRoots(RootVisitor* visitor) { 1569 java_vm_->VisitRoots(visitor); 1570 sentinel_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1571 pre_allocated_OutOfMemoryError_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1572 pre_allocated_NoClassDefFoundError_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1573 verifier::MethodVerifier::VisitStaticRoots(visitor); 1574 VisitTransactionRoots(visitor); 1575} 1576 1577void Runtime::VisitNonConcurrentRoots(RootVisitor* visitor) { 1578 thread_list_->VisitRoots(visitor); 1579 VisitNonThreadRoots(visitor); 1580} 1581 1582void Runtime::VisitThreadRoots(RootVisitor* visitor) { 1583 thread_list_->VisitRoots(visitor); 1584} 1585 1586size_t Runtime::FlipThreadRoots(Closure* thread_flip_visitor, Closure* flip_callback, 1587 gc::collector::GarbageCollector* collector) { 1588 return thread_list_->FlipThreadRoots(thread_flip_visitor, flip_callback, collector); 1589} 1590 1591void Runtime::VisitRoots(RootVisitor* visitor, VisitRootFlags flags) { 1592 VisitNonConcurrentRoots(visitor); 1593 VisitConcurrentRoots(visitor, flags); 1594} 1595 1596void Runtime::VisitImageRoots(RootVisitor* visitor) { 1597 for (auto* space : GetHeap()->GetContinuousSpaces()) { 1598 if (space->IsImageSpace()) { 1599 auto* image_space = space->AsImageSpace(); 1600 const auto& image_header = image_space->GetImageHeader(); 1601 for (size_t i = 0; i < ImageHeader::kImageRootsMax; ++i) { 1602 auto* obj = image_header.GetImageRoot(static_cast<ImageHeader::ImageRoot>(i)); 1603 if (obj != nullptr) { 1604 auto* after_obj = obj; 1605 visitor->VisitRoot(&after_obj, RootInfo(kRootStickyClass)); 1606 CHECK_EQ(after_obj, obj); 1607 } 1608 } 1609 } 1610 } 1611} 1612 1613static ImtConflictTable::Entry empty_entry = { nullptr, nullptr }; 1614 1615ArtMethod* Runtime::CreateImtConflictMethod(LinearAlloc* linear_alloc) { 1616 auto* method = Runtime::Current()->GetClassLinker()->CreateRuntimeMethod(linear_alloc); 1617 // When compiling, the code pointer will get set later when the image is loaded. 1618 if (IsAotCompiler()) { 1619 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1620 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1621 } else { 1622 method->SetEntryPointFromQuickCompiledCode(GetQuickImtConflictStub()); 1623 method->SetImtConflictTable(reinterpret_cast<ImtConflictTable*>(&empty_entry)); 1624 } 1625 return method; 1626} 1627 1628void Runtime::SetImtConflictMethod(ArtMethod* method) { 1629 CHECK(method != nullptr); 1630 CHECK(method->IsRuntimeMethod()); 1631 imt_conflict_method_ = method; 1632 if (!IsAotCompiler()) { 1633 method->SetImtConflictTable(reinterpret_cast<ImtConflictTable*>(&empty_entry)); 1634 } 1635} 1636 1637ArtMethod* Runtime::CreateResolutionMethod() { 1638 auto* method = GetClassLinker()->CreateRuntimeMethod(GetLinearAlloc()); 1639 // When compiling, the code pointer will get set later when the image is loaded. 1640 if (IsAotCompiler()) { 1641 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1642 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1643 } else { 1644 method->SetEntryPointFromQuickCompiledCode(GetQuickResolutionStub()); 1645 } 1646 return method; 1647} 1648 1649ArtMethod* Runtime::CreateCalleeSaveMethod() { 1650 auto* method = GetClassLinker()->CreateRuntimeMethod(GetLinearAlloc()); 1651 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1652 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1653 DCHECK_NE(instruction_set_, kNone); 1654 DCHECK(method->IsRuntimeMethod()); 1655 return method; 1656} 1657 1658void Runtime::DisallowNewSystemWeaks() { 1659 CHECK(!kUseReadBarrier); 1660 monitor_list_->DisallowNewMonitors(); 1661 intern_table_->ChangeWeakRootState(gc::kWeakRootStateNoReadsOrWrites); 1662 java_vm_->DisallowNewWeakGlobals(); 1663 heap_->DisallowNewAllocationRecords(); 1664 lambda_box_table_->DisallowNewWeakBoxedLambdas(); 1665} 1666 1667void Runtime::AllowNewSystemWeaks() { 1668 CHECK(!kUseReadBarrier); 1669 monitor_list_->AllowNewMonitors(); 1670 intern_table_->ChangeWeakRootState(gc::kWeakRootStateNormal); // TODO: Do this in the sweeping. 1671 java_vm_->AllowNewWeakGlobals(); 1672 heap_->AllowNewAllocationRecords(); 1673 lambda_box_table_->AllowNewWeakBoxedLambdas(); 1674} 1675 1676void Runtime::BroadcastForNewSystemWeaks() { 1677 // This is used for the read barrier case that uses the thread-local 1678 // Thread::GetWeakRefAccessEnabled() flag. 1679 CHECK(kUseReadBarrier); 1680 monitor_list_->BroadcastForNewMonitors(); 1681 intern_table_->BroadcastForNewInterns(); 1682 java_vm_->BroadcastForNewWeakGlobals(); 1683 heap_->BroadcastForNewAllocationRecords(); 1684 lambda_box_table_->BroadcastForNewWeakBoxedLambdas(); 1685} 1686 1687void Runtime::SetInstructionSet(InstructionSet instruction_set) { 1688 instruction_set_ = instruction_set; 1689 if ((instruction_set_ == kThumb2) || (instruction_set_ == kArm)) { 1690 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1691 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1692 callee_save_method_frame_infos_[i] = arm::ArmCalleeSaveMethodFrameInfo(type); 1693 } 1694 } else if (instruction_set_ == kMips) { 1695 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1696 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1697 callee_save_method_frame_infos_[i] = mips::MipsCalleeSaveMethodFrameInfo(type); 1698 } 1699 } else if (instruction_set_ == kMips64) { 1700 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1701 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1702 callee_save_method_frame_infos_[i] = mips64::Mips64CalleeSaveMethodFrameInfo(type); 1703 } 1704 } else if (instruction_set_ == kX86) { 1705 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1706 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1707 callee_save_method_frame_infos_[i] = x86::X86CalleeSaveMethodFrameInfo(type); 1708 } 1709 } else if (instruction_set_ == kX86_64) { 1710 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1711 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1712 callee_save_method_frame_infos_[i] = x86_64::X86_64CalleeSaveMethodFrameInfo(type); 1713 } 1714 } else if (instruction_set_ == kArm64) { 1715 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1716 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1717 callee_save_method_frame_infos_[i] = arm64::Arm64CalleeSaveMethodFrameInfo(type); 1718 } 1719 } else { 1720 UNIMPLEMENTED(FATAL) << instruction_set_; 1721 } 1722} 1723 1724void Runtime::SetCalleeSaveMethod(ArtMethod* method, CalleeSaveType type) { 1725 DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType)); 1726 CHECK(method != nullptr); 1727 callee_save_methods_[type] = reinterpret_cast<uintptr_t>(method); 1728} 1729 1730void Runtime::RegisterAppInfo(const std::vector<std::string>& code_paths, 1731 const std::string& profile_output_filename, 1732 const std::string& foreign_dex_profile_path, 1733 const std::string& app_dir) { 1734 if (jit_.get() == nullptr) { 1735 // We are not JITing. Nothing to do. 1736 return; 1737 } 1738 1739 VLOG(profiler) << "Register app with " << profile_output_filename 1740 << " " << Join(code_paths, ':'); 1741 1742 if (profile_output_filename.empty()) { 1743 LOG(WARNING) << "JIT profile information will not be recorded: profile filename is empty."; 1744 return; 1745 } 1746 if (!FileExists(profile_output_filename)) { 1747 LOG(WARNING) << "JIT profile information will not be recorded: profile file does not exits."; 1748 return; 1749 } 1750 if (code_paths.empty()) { 1751 LOG(WARNING) << "JIT profile information will not be recorded: code paths is empty."; 1752 return; 1753 } 1754 1755 profile_output_filename_ = profile_output_filename; 1756 jit_->StartProfileSaver(profile_output_filename, 1757 code_paths, 1758 foreign_dex_profile_path, 1759 app_dir); 1760} 1761 1762void Runtime::NotifyDexLoaded(const std::string& dex_location) { 1763 VLOG(profiler) << "Notify dex loaded: " << dex_location; 1764 // We know that if the ProfileSaver is started then we can record profile information. 1765 if (ProfileSaver::IsStarted()) { 1766 ProfileSaver::NotifyDexUse(dex_location); 1767 } 1768} 1769 1770// Transaction support. 1771void Runtime::EnterTransactionMode(Transaction* transaction) { 1772 DCHECK(IsAotCompiler()); 1773 DCHECK(transaction != nullptr); 1774 DCHECK(!IsActiveTransaction()); 1775 preinitialization_transaction_ = transaction; 1776} 1777 1778void Runtime::ExitTransactionMode() { 1779 DCHECK(IsAotCompiler()); 1780 DCHECK(IsActiveTransaction()); 1781 preinitialization_transaction_ = nullptr; 1782} 1783 1784bool Runtime::IsTransactionAborted() const { 1785 if (!IsActiveTransaction()) { 1786 return false; 1787 } else { 1788 DCHECK(IsAotCompiler()); 1789 return preinitialization_transaction_->IsAborted(); 1790 } 1791} 1792 1793void Runtime::AbortTransactionAndThrowAbortError(Thread* self, const std::string& abort_message) { 1794 DCHECK(IsAotCompiler()); 1795 DCHECK(IsActiveTransaction()); 1796 // Throwing an exception may cause its class initialization. If we mark the transaction 1797 // aborted before that, we may warn with a false alarm. Throwing the exception before 1798 // marking the transaction aborted avoids that. 1799 preinitialization_transaction_->ThrowAbortError(self, &abort_message); 1800 preinitialization_transaction_->Abort(abort_message); 1801} 1802 1803void Runtime::ThrowTransactionAbortError(Thread* self) { 1804 DCHECK(IsAotCompiler()); 1805 DCHECK(IsActiveTransaction()); 1806 // Passing nullptr means we rethrow an exception with the earlier transaction abort message. 1807 preinitialization_transaction_->ThrowAbortError(self, nullptr); 1808} 1809 1810void Runtime::RecordWriteFieldBoolean(mirror::Object* obj, MemberOffset field_offset, 1811 uint8_t value, bool is_volatile) const { 1812 DCHECK(IsAotCompiler()); 1813 DCHECK(IsActiveTransaction()); 1814 preinitialization_transaction_->RecordWriteFieldBoolean(obj, field_offset, value, is_volatile); 1815} 1816 1817void Runtime::RecordWriteFieldByte(mirror::Object* obj, MemberOffset field_offset, 1818 int8_t value, bool is_volatile) const { 1819 DCHECK(IsAotCompiler()); 1820 DCHECK(IsActiveTransaction()); 1821 preinitialization_transaction_->RecordWriteFieldByte(obj, field_offset, value, is_volatile); 1822} 1823 1824void Runtime::RecordWriteFieldChar(mirror::Object* obj, MemberOffset field_offset, 1825 uint16_t value, bool is_volatile) const { 1826 DCHECK(IsAotCompiler()); 1827 DCHECK(IsActiveTransaction()); 1828 preinitialization_transaction_->RecordWriteFieldChar(obj, field_offset, value, is_volatile); 1829} 1830 1831void Runtime::RecordWriteFieldShort(mirror::Object* obj, MemberOffset field_offset, 1832 int16_t value, bool is_volatile) const { 1833 DCHECK(IsAotCompiler()); 1834 DCHECK(IsActiveTransaction()); 1835 preinitialization_transaction_->RecordWriteFieldShort(obj, field_offset, value, is_volatile); 1836} 1837 1838void Runtime::RecordWriteField32(mirror::Object* obj, MemberOffset field_offset, 1839 uint32_t value, bool is_volatile) const { 1840 DCHECK(IsAotCompiler()); 1841 DCHECK(IsActiveTransaction()); 1842 preinitialization_transaction_->RecordWriteField32(obj, field_offset, value, is_volatile); 1843} 1844 1845void Runtime::RecordWriteField64(mirror::Object* obj, MemberOffset field_offset, 1846 uint64_t value, bool is_volatile) const { 1847 DCHECK(IsAotCompiler()); 1848 DCHECK(IsActiveTransaction()); 1849 preinitialization_transaction_->RecordWriteField64(obj, field_offset, value, is_volatile); 1850} 1851 1852void Runtime::RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset, 1853 mirror::Object* value, bool is_volatile) const { 1854 DCHECK(IsAotCompiler()); 1855 DCHECK(IsActiveTransaction()); 1856 preinitialization_transaction_->RecordWriteFieldReference(obj, field_offset, value, is_volatile); 1857} 1858 1859void Runtime::RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const { 1860 DCHECK(IsAotCompiler()); 1861 DCHECK(IsActiveTransaction()); 1862 preinitialization_transaction_->RecordWriteArray(array, index, value); 1863} 1864 1865void Runtime::RecordStrongStringInsertion(mirror::String* s) const { 1866 DCHECK(IsAotCompiler()); 1867 DCHECK(IsActiveTransaction()); 1868 preinitialization_transaction_->RecordStrongStringInsertion(s); 1869} 1870 1871void Runtime::RecordWeakStringInsertion(mirror::String* s) const { 1872 DCHECK(IsAotCompiler()); 1873 DCHECK(IsActiveTransaction()); 1874 preinitialization_transaction_->RecordWeakStringInsertion(s); 1875} 1876 1877void Runtime::RecordStrongStringRemoval(mirror::String* s) const { 1878 DCHECK(IsAotCompiler()); 1879 DCHECK(IsActiveTransaction()); 1880 preinitialization_transaction_->RecordStrongStringRemoval(s); 1881} 1882 1883void Runtime::RecordWeakStringRemoval(mirror::String* s) const { 1884 DCHECK(IsAotCompiler()); 1885 DCHECK(IsActiveTransaction()); 1886 preinitialization_transaction_->RecordWeakStringRemoval(s); 1887} 1888 1889void Runtime::SetFaultMessage(const std::string& message) { 1890 MutexLock mu(Thread::Current(), fault_message_lock_); 1891 fault_message_ = message; 1892} 1893 1894void Runtime::AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* argv) 1895 const { 1896 if (GetInstrumentation()->InterpretOnly()) { 1897 argv->push_back("--compiler-filter=interpret-only"); 1898 } 1899 1900 // Make the dex2oat instruction set match that of the launching runtime. If we have multiple 1901 // architecture support, dex2oat may be compiled as a different instruction-set than that 1902 // currently being executed. 1903 std::string instruction_set("--instruction-set="); 1904 instruction_set += GetInstructionSetString(kRuntimeISA); 1905 argv->push_back(instruction_set); 1906 1907 std::unique_ptr<const InstructionSetFeatures> features(InstructionSetFeatures::FromCppDefines()); 1908 std::string feature_string("--instruction-set-features="); 1909 feature_string += features->GetFeatureString(); 1910 argv->push_back(feature_string); 1911} 1912 1913void Runtime::CreateJit() { 1914 CHECK(!IsAotCompiler()); 1915 if (GetInstrumentation()->IsForcedInterpretOnly()) { 1916 // Don't create JIT if forced interpret only. 1917 return; 1918 } 1919 std::string error_msg; 1920 jit_.reset(jit::Jit::Create(jit_options_.get(), &error_msg)); 1921 if (jit_.get() != nullptr) { 1922 jit_->CreateInstrumentationCache(jit_options_->GetCompileThreshold(), 1923 jit_options_->GetWarmupThreshold(), 1924 jit_options_->GetOsrThreshold()); 1925 jit_->CreateThreadPool(); 1926 1927 // Notify native debugger about the classes already loaded before the creation of the jit. 1928 jit_->DumpTypeInfoForLoadedTypes(GetClassLinker()); 1929 } else { 1930 LOG(WARNING) << "Failed to create JIT " << error_msg; 1931 } 1932} 1933 1934bool Runtime::CanRelocate() const { 1935 return !IsAotCompiler() || compiler_callbacks_->IsRelocationPossible(); 1936} 1937 1938bool Runtime::IsCompilingBootImage() const { 1939 return IsCompiler() && compiler_callbacks_->IsBootImage(); 1940} 1941 1942void Runtime::SetResolutionMethod(ArtMethod* method) { 1943 CHECK(method != nullptr); 1944 CHECK(method->IsRuntimeMethod()) << method; 1945 resolution_method_ = method; 1946} 1947 1948void Runtime::SetImtUnimplementedMethod(ArtMethod* method) { 1949 CHECK(method != nullptr); 1950 CHECK(method->IsRuntimeMethod()); 1951 imt_unimplemented_method_ = method; 1952 if (!IsAotCompiler()) { 1953 method->SetImtConflictTable(reinterpret_cast<ImtConflictTable*>(&empty_entry)); 1954 } 1955} 1956 1957bool Runtime::IsVerificationEnabled() const { 1958 return verify_ == verifier::VerifyMode::kEnable || 1959 verify_ == verifier::VerifyMode::kSoftFail; 1960} 1961 1962bool Runtime::IsVerificationSoftFail() const { 1963 return verify_ == verifier::VerifyMode::kSoftFail; 1964} 1965 1966LinearAlloc* Runtime::CreateLinearAlloc() { 1967 // For 64 bit compilers, it needs to be in low 4GB in the case where we are cross compiling for a 1968 // 32 bit target. In this case, we have 32 bit pointers in the dex cache arrays which can't hold 1969 // when we have 64 bit ArtMethod pointers. 1970 return (IsAotCompiler() && Is64BitInstructionSet(kRuntimeISA)) 1971 ? new LinearAlloc(low_4gb_arena_pool_.get()) 1972 : new LinearAlloc(arena_pool_.get()); 1973} 1974 1975double Runtime::GetHashTableMinLoadFactor() const { 1976 return is_low_memory_mode_ ? kLowMemoryMinLoadFactor : kNormalMinLoadFactor; 1977} 1978 1979double Runtime::GetHashTableMaxLoadFactor() const { 1980 return is_low_memory_mode_ ? kLowMemoryMaxLoadFactor : kNormalMaxLoadFactor; 1981} 1982 1983void Runtime::UpdateProcessState(ProcessState process_state) { 1984 ProcessState old_process_state = process_state_; 1985 process_state_ = process_state; 1986 GetHeap()->UpdateProcessState(old_process_state, process_state); 1987} 1988 1989} // namespace art 1990