runtime.cc revision a1425a1c9c98ae3fc772834933a5d55566fb5699
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 "debugger.h" 64#include "elf_file.h" 65#include "entrypoints/runtime_asm_entrypoints.h" 66#include "experimental_flags.h" 67#include "fault_handler.h" 68#include "gc/accounting/card_table-inl.h" 69#include "gc/heap.h" 70#include "gc/space/image_space.h" 71#include "gc/space/space-inl.h" 72#include "handle_scope-inl.h" 73#include "image-inl.h" 74#include "instrumentation.h" 75#include "intern_table.h" 76#include "interpreter/interpreter.h" 77#include "jit/jit.h" 78#include "jni_internal.h" 79#include "linear_alloc.h" 80#include "lambda/box_table.h" 81#include "mirror/array.h" 82#include "mirror/class-inl.h" 83#include "mirror/class_loader.h" 84#include "mirror/field.h" 85#include "mirror/method.h" 86#include "mirror/stack_trace_element.h" 87#include "mirror/throwable.h" 88#include "monitor.h" 89#include "native/dalvik_system_DexFile.h" 90#include "native/dalvik_system_VMDebug.h" 91#include "native/dalvik_system_VMRuntime.h" 92#include "native/dalvik_system_VMStack.h" 93#include "native/dalvik_system_ZygoteHooks.h" 94#include "native/java_lang_Class.h" 95#include "native/java_lang_DexCache.h" 96#include "native/java_lang_Object.h" 97#include "native/java_lang_Runtime.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 zygote_max_failed_boots_(0), 208 experimental_flags_(ExperimentalFlags::kNone), 209 oat_file_manager_(nullptr), 210 is_low_memory_mode_(false), 211 safe_mode_(false), 212 pruned_dalvik_cache_(false) { 213 CheckAsmSupportOffsetsAndSizes(); 214 std::fill(callee_save_methods_, callee_save_methods_ + arraysize(callee_save_methods_), 0u); 215 interpreter::CheckInterpreterAsmConstants(); 216} 217 218Runtime::~Runtime() { 219 ScopedTrace trace("Runtime shutdown"); 220 if (is_native_bridge_loaded_) { 221 UnloadNativeBridge(); 222 } 223 224 if (dump_gc_performance_on_shutdown_) { 225 // This can't be called from the Heap destructor below because it 226 // could call RosAlloc::InspectAll() which needs the thread_list 227 // to be still alive. 228 heap_->DumpGcPerformanceInfo(LOG(INFO)); 229 } 230 231 Thread* self = Thread::Current(); 232 const bool attach_shutdown_thread = self == nullptr; 233 if (attach_shutdown_thread) { 234 CHECK(AttachCurrentThread("Shutdown thread", false, nullptr, false)); 235 self = Thread::Current(); 236 } else { 237 LOG(WARNING) << "Current thread not detached in Runtime shutdown"; 238 } 239 240 { 241 ScopedTrace trace2("Wait for shutdown cond"); 242 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 243 shutting_down_started_ = true; 244 while (threads_being_born_ > 0) { 245 shutdown_cond_->Wait(self); 246 } 247 shutting_down_ = true; 248 } 249 // Shutdown and wait for the daemons. 250 CHECK(self != nullptr); 251 if (IsFinishedStarting()) { 252 ScopedTrace trace2("Waiting for Daemons"); 253 self->ClearException(); 254 self->GetJniEnv()->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 255 WellKnownClasses::java_lang_Daemons_stop); 256 } 257 258 Trace::Shutdown(); 259 260 if (attach_shutdown_thread) { 261 DetachCurrentThread(); 262 self = nullptr; 263 } 264 265 // Make sure to let the GC complete if it is running. 266 heap_->WaitForGcToComplete(gc::kGcCauseBackground, self); 267 heap_->DeleteThreadPool(); 268 if (jit_ != nullptr) { 269 ScopedTrace trace2("Delete jit"); 270 VLOG(jit) << "Deleting jit thread pool"; 271 // Delete thread pool before the thread list since we don't want to wait forever on the 272 // JIT compiler threads. 273 jit_->DeleteThreadPool(); 274 // Similarly, stop the profile saver thread before deleting the thread list. 275 jit_->StopProfileSaver(); 276 } 277 278 // Make sure our internal threads are dead before we start tearing down things they're using. 279 Dbg::StopJdwp(); 280 delete signal_catcher_; 281 282 // Make sure all other non-daemon threads have terminated, and all daemon threads are suspended. 283 { 284 ScopedTrace trace2("Delete thread list"); 285 delete thread_list_; 286 } 287 // Delete the JIT after thread list to ensure that there is no remaining threads which could be 288 // accessing the instrumentation when we delete it. 289 if (jit_ != nullptr) { 290 VLOG(jit) << "Deleting jit"; 291 jit_.reset(nullptr); 292 } 293 294 // Shutdown the fault manager if it was initialized. 295 fault_manager.Shutdown(); 296 297 ScopedTrace trace2("Delete state"); 298 delete monitor_list_; 299 delete monitor_pool_; 300 delete class_linker_; 301 delete heap_; 302 delete intern_table_; 303 delete java_vm_; 304 delete oat_file_manager_; 305 Thread::Shutdown(); 306 QuasiAtomic::Shutdown(); 307 verifier::MethodVerifier::Shutdown(); 308 309 // Destroy allocators before shutting down the MemMap because they may use it. 310 linear_alloc_.reset(); 311 low_4gb_arena_pool_.reset(); 312 arena_pool_.reset(); 313 jit_arena_pool_.reset(); 314 MemMap::Shutdown(); 315 316 // TODO: acquire a static mutex on Runtime to avoid racing. 317 CHECK(instance_ == nullptr || instance_ == this); 318 instance_ = nullptr; 319} 320 321struct AbortState { 322 void Dump(std::ostream& os) const { 323 if (gAborting > 1) { 324 os << "Runtime aborting --- recursively, so no thread-specific detail!\n"; 325 return; 326 } 327 gAborting++; 328 os << "Runtime aborting...\n"; 329 if (Runtime::Current() == nullptr) { 330 os << "(Runtime does not yet exist!)\n"; 331 DumpNativeStack(os, GetTid(), nullptr, " native: ", nullptr); 332 return; 333 } 334 Thread* self = Thread::Current(); 335 if (self == nullptr) { 336 os << "(Aborting thread was not attached to runtime!)\n"; 337 DumpKernelStack(os, GetTid(), " kernel: ", false); 338 DumpNativeStack(os, GetTid(), nullptr, " native: ", nullptr); 339 } else { 340 os << "Aborting thread:\n"; 341 if (Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)) { 342 DumpThread(os, self); 343 } else { 344 if (Locks::mutator_lock_->SharedTryLock(self)) { 345 DumpThread(os, self); 346 Locks::mutator_lock_->SharedUnlock(self); 347 } 348 } 349 } 350 DumpAllThreads(os, self); 351 } 352 353 // No thread-safety analysis as we do explicitly test for holding the mutator lock. 354 void DumpThread(std::ostream& os, Thread* self) const NO_THREAD_SAFETY_ANALYSIS { 355 DCHECK(Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)); 356 self->Dump(os); 357 if (self->IsExceptionPending()) { 358 mirror::Throwable* exception = self->GetException(); 359 os << "Pending exception " << exception->Dump(); 360 } 361 } 362 363 void DumpAllThreads(std::ostream& os, Thread* self) const { 364 Runtime* runtime = Runtime::Current(); 365 if (runtime != nullptr) { 366 ThreadList* thread_list = runtime->GetThreadList(); 367 if (thread_list != nullptr) { 368 bool tll_already_held = Locks::thread_list_lock_->IsExclusiveHeld(self); 369 bool ml_already_held = Locks::mutator_lock_->IsSharedHeld(self); 370 if (!tll_already_held || !ml_already_held) { 371 os << "Dumping all threads without appropriate locks held:" 372 << (!tll_already_held ? " thread list lock" : "") 373 << (!ml_already_held ? " mutator lock" : "") 374 << "\n"; 375 } 376 os << "All threads:\n"; 377 thread_list->Dump(os); 378 } 379 } 380 } 381}; 382 383void Runtime::Abort() { 384 gAborting++; // set before taking any locks 385 386 // Ensure that we don't have multiple threads trying to abort at once, 387 // which would result in significantly worse diagnostics. 388 MutexLock mu(Thread::Current(), *Locks::abort_lock_); 389 390 // Get any pending output out of the way. 391 fflush(nullptr); 392 393 // Many people have difficulty distinguish aborts from crashes, 394 // so be explicit. 395 AbortState state; 396 LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state); 397 398 // Call the abort hook if we have one. 399 if (Runtime::Current() != nullptr && Runtime::Current()->abort_ != nullptr) { 400 LOG(INTERNAL_FATAL) << "Calling abort hook..."; 401 Runtime::Current()->abort_(); 402 // notreached 403 LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!"; 404 } 405 406#if defined(__GLIBC__) 407 // TODO: we ought to be able to use pthread_kill(3) here (or abort(3), 408 // which POSIX defines in terms of raise(3), which POSIX defines in terms 409 // of pthread_kill(3)). On Linux, though, libcorkscrew can't unwind through 410 // libpthread, which means the stacks we dump would be useless. Calling 411 // tgkill(2) directly avoids that. 412 syscall(__NR_tgkill, getpid(), GetTid(), SIGABRT); 413 // TODO: LLVM installs it's own SIGABRT handler so exit to be safe... Can we disable that in LLVM? 414 // If not, we could use sigaction(3) before calling tgkill(2) and lose this call to exit(3). 415 exit(1); 416#else 417 abort(); 418#endif 419 // notreached 420} 421 422void Runtime::PreZygoteFork() { 423 heap_->PreZygoteFork(); 424} 425 426void Runtime::CallExitHook(jint status) { 427 if (exit_ != nullptr) { 428 ScopedThreadStateChange tsc(Thread::Current(), kNative); 429 exit_(status); 430 LOG(WARNING) << "Exit hook returned instead of exiting!"; 431 } 432} 433 434void Runtime::SweepSystemWeaks(IsMarkedVisitor* visitor) { 435 GetInternTable()->SweepInternTableWeaks(visitor); 436 GetMonitorList()->SweepMonitorList(visitor); 437 GetJavaVM()->SweepJniWeakGlobals(visitor); 438 GetHeap()->SweepAllocationRecords(visitor); 439 GetLambdaBoxTable()->SweepWeakBoxedLambdas(visitor); 440} 441 442bool Runtime::ParseOptions(const RuntimeOptions& raw_options, 443 bool ignore_unrecognized, 444 RuntimeArgumentMap* runtime_options) { 445 InitLogging(/* argv */ nullptr); // Calls Locks::Init() as a side effect. 446 bool parsed = ParsedOptions::Parse(raw_options, ignore_unrecognized, runtime_options); 447 if (!parsed) { 448 LOG(ERROR) << "Failed to parse options"; 449 return false; 450 } 451 return true; 452} 453 454bool Runtime::Create(RuntimeArgumentMap&& runtime_options) { 455 // TODO: acquire a static mutex on Runtime to avoid racing. 456 if (Runtime::instance_ != nullptr) { 457 return false; 458 } 459 instance_ = new Runtime; 460 if (!instance_->Init(std::move(runtime_options))) { 461 // TODO: Currently deleting the instance will abort the runtime on destruction. Now This will 462 // leak memory, instead. Fix the destructor. b/19100793. 463 // delete instance_; 464 instance_ = nullptr; 465 return false; 466 } 467 return true; 468} 469 470bool Runtime::Create(const RuntimeOptions& raw_options, bool ignore_unrecognized) { 471 RuntimeArgumentMap runtime_options; 472 return ParseOptions(raw_options, ignore_unrecognized, &runtime_options) && 473 Create(std::move(runtime_options)); 474} 475 476static jobject CreateSystemClassLoader(Runtime* runtime) { 477 if (runtime->IsAotCompiler() && !runtime->GetCompilerCallbacks()->IsBootImage()) { 478 return nullptr; 479 } 480 481 ScopedObjectAccess soa(Thread::Current()); 482 ClassLinker* cl = Runtime::Current()->GetClassLinker(); 483 auto pointer_size = cl->GetImagePointerSize(); 484 485 StackHandleScope<2> hs(soa.Self()); 486 Handle<mirror::Class> class_loader_class( 487 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader))); 488 CHECK(cl->EnsureInitialized(soa.Self(), class_loader_class, true, true)); 489 490 ArtMethod* getSystemClassLoader = class_loader_class->FindDirectMethod( 491 "getSystemClassLoader", "()Ljava/lang/ClassLoader;", pointer_size); 492 CHECK(getSystemClassLoader != nullptr); 493 494 JValue result = InvokeWithJValues(soa, nullptr, soa.EncodeMethod(getSystemClassLoader), nullptr); 495 JNIEnv* env = soa.Self()->GetJniEnv(); 496 ScopedLocalRef<jobject> system_class_loader(env, soa.AddLocalReference<jobject>(result.GetL())); 497 CHECK(system_class_loader.get() != nullptr); 498 499 soa.Self()->SetClassLoaderOverride(system_class_loader.get()); 500 501 Handle<mirror::Class> thread_class( 502 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread))); 503 CHECK(cl->EnsureInitialized(soa.Self(), thread_class, true, true)); 504 505 ArtField* contextClassLoader = 506 thread_class->FindDeclaredInstanceField("contextClassLoader", "Ljava/lang/ClassLoader;"); 507 CHECK(contextClassLoader != nullptr); 508 509 // We can't run in a transaction yet. 510 contextClassLoader->SetObject<false>(soa.Self()->GetPeer(), 511 soa.Decode<mirror::ClassLoader*>(system_class_loader.get())); 512 513 return env->NewGlobalRef(system_class_loader.get()); 514} 515 516std::string Runtime::GetPatchoatExecutable() const { 517 if (!patchoat_executable_.empty()) { 518 return patchoat_executable_; 519 } 520 std::string patchoat_executable(GetAndroidRoot()); 521 patchoat_executable += (kIsDebugBuild ? "/bin/patchoatd" : "/bin/patchoat"); 522 return patchoat_executable; 523} 524 525std::string Runtime::GetCompilerExecutable() const { 526 if (!compiler_executable_.empty()) { 527 return compiler_executable_; 528 } 529 std::string compiler_executable(GetAndroidRoot()); 530 compiler_executable += (kIsDebugBuild ? "/bin/dex2oatd" : "/bin/dex2oat"); 531 return compiler_executable; 532} 533 534bool Runtime::Start() { 535 VLOG(startup) << "Runtime::Start entering"; 536 537 CHECK(!no_sig_chain_) << "A started runtime should have sig chain enabled"; 538 539 // If a debug host build, disable ptrace restriction for debugging and test timeout thread dump. 540 // Only 64-bit as prctl() may fail in 32 bit userspace on a 64-bit kernel. 541#if defined(__linux__) && !defined(__ANDROID__) && defined(__x86_64__) 542 if (kIsDebugBuild) { 543 CHECK_EQ(prctl(PR_SET_PTRACER, PR_SET_PTRACER_ANY), 0); 544 } 545#endif 546 547 // Restore main thread state to kNative as expected by native code. 548 Thread* self = Thread::Current(); 549 550 self->TransitionFromRunnableToSuspended(kNative); 551 552 started_ = true; 553 554 // Use !IsAotCompiler so that we get test coverage, tests are never the zygote. 555 if (!IsAotCompiler()) { 556 ScopedObjectAccess soa(self); 557 { 558 ScopedTrace trace2("AddImageStringsToTable"); 559 GetInternTable()->AddImagesStringsToTable(heap_->GetBootImageSpaces()); 560 } 561 { 562 ScopedTrace trace2("MoveImageClassesToClassTable"); 563 GetClassLinker()->AddBootImageClassesToClassTable(); 564 } 565 } 566 567 // If we are the zygote then we need to wait until after forking to create the code cache 568 // due to SELinux restrictions on r/w/x memory regions. 569 if (!IsZygote() && jit_options_->UseJIT()) { 570 CreateJit(); 571 } 572 573 if (!IsImageDex2OatEnabled() || !GetHeap()->HasBootImageSpace()) { 574 ScopedObjectAccess soa(self); 575 StackHandleScope<1> hs(soa.Self()); 576 auto klass(hs.NewHandle<mirror::Class>(mirror::Class::GetJavaLangClass())); 577 class_linker_->EnsureInitialized(soa.Self(), klass, true, true); 578 } 579 580 // InitNativeMethods needs to be after started_ so that the classes 581 // it touches will have methods linked to the oat file if necessary. 582 { 583 ScopedTrace trace2("InitNativeMethods"); 584 InitNativeMethods(); 585 } 586 587 // Initialize well known thread group values that may be accessed threads while attaching. 588 InitThreadGroups(self); 589 590 Thread::FinishStartup(); 591 592 system_class_loader_ = CreateSystemClassLoader(this); 593 594 if (is_zygote_) { 595 if (!InitZygote()) { 596 return false; 597 } 598 } else { 599 if (is_native_bridge_loaded_) { 600 PreInitializeNativeBridge("."); 601 } 602 NativeBridgeAction action = force_native_bridge_ 603 ? NativeBridgeAction::kInitialize 604 : NativeBridgeAction::kUnload; 605 InitNonZygoteOrPostFork(self->GetJniEnv(), 606 /* is_system_server */ false, 607 action, 608 GetInstructionSetString(kRuntimeISA)); 609 } 610 611 StartDaemonThreads(); 612 613 { 614 ScopedObjectAccess soa(self); 615 self->GetJniEnv()->locals.AssertEmpty(); 616 } 617 618 VLOG(startup) << "Runtime::Start exiting"; 619 finished_starting_ = true; 620 621 if (profiler_options_.IsEnabled() && !profile_output_filename_.empty()) { 622 // User has asked for a profile using -Xenable-profiler. 623 // Create the profile file if it doesn't exist. 624 int fd = open(profile_output_filename_.c_str(), O_RDWR|O_CREAT|O_EXCL, 0660); 625 if (fd >= 0) { 626 close(fd); 627 } else if (errno != EEXIST) { 628 LOG(WARNING) << "Failed to access the profile file. Profiler disabled."; 629 } 630 } 631 632 if (trace_config_.get() != nullptr && trace_config_->trace_file != "") { 633 ScopedThreadStateChange tsc(self, kWaitingForMethodTracingStart); 634 Trace::Start(trace_config_->trace_file.c_str(), 635 -1, 636 static_cast<int>(trace_config_->trace_file_size), 637 0, 638 trace_config_->trace_output_mode, 639 trace_config_->trace_mode, 640 0); 641 } 642 643 return true; 644} 645 646void Runtime::EndThreadBirth() REQUIRES(Locks::runtime_shutdown_lock_) { 647 DCHECK_GT(threads_being_born_, 0U); 648 threads_being_born_--; 649 if (shutting_down_started_ && threads_being_born_ == 0) { 650 shutdown_cond_->Broadcast(Thread::Current()); 651 } 652} 653 654// Do zygote-mode-only initialization. 655bool Runtime::InitZygote() { 656#ifdef __linux__ 657 // zygote goes into its own process group 658 setpgid(0, 0); 659 660 // See storage config details at http://source.android.com/tech/storage/ 661 // Create private mount namespace shared by all children 662 if (unshare(CLONE_NEWNS) == -1) { 663 PLOG(ERROR) << "Failed to unshare()"; 664 return false; 665 } 666 667 // Mark rootfs as being a slave so that changes from default 668 // namespace only flow into our children. 669 if (mount("rootfs", "/", nullptr, (MS_SLAVE | MS_REC), nullptr) == -1) { 670 PLOG(ERROR) << "Failed to mount() rootfs as MS_SLAVE"; 671 return false; 672 } 673 674 // Create a staging tmpfs that is shared by our children; they will 675 // bind mount storage into their respective private namespaces, which 676 // are isolated from each other. 677 const char* target_base = getenv("EMULATED_STORAGE_TARGET"); 678 if (target_base != nullptr) { 679 if (mount("tmpfs", target_base, "tmpfs", MS_NOSUID | MS_NODEV, 680 "uid=0,gid=1028,mode=0751") == -1) { 681 PLOG(ERROR) << "Failed to mount tmpfs to " << target_base; 682 return false; 683 } 684 } 685 686 return true; 687#else 688 UNIMPLEMENTED(FATAL); 689 return false; 690#endif 691} 692 693void Runtime::InitNonZygoteOrPostFork( 694 JNIEnv* env, bool is_system_server, NativeBridgeAction action, const char* isa) { 695 is_zygote_ = false; 696 697 if (is_native_bridge_loaded_) { 698 switch (action) { 699 case NativeBridgeAction::kUnload: 700 UnloadNativeBridge(); 701 is_native_bridge_loaded_ = false; 702 break; 703 704 case NativeBridgeAction::kInitialize: 705 InitializeNativeBridge(env, isa); 706 break; 707 } 708 } 709 710 // Create the thread pools. 711 heap_->CreateThreadPool(); 712 // Reset the gc performance data at zygote fork so that the GCs 713 // before fork aren't attributed to an app. 714 heap_->ResetGcPerformanceInfo(); 715 716 if (!is_system_server && !safe_mode_ && jit_options_->UseJIT() && jit_.get() == nullptr) { 717 // Note that when running ART standalone (not zygote, nor zygote fork), 718 // the jit may have already been created. 719 CreateJit(); 720 } 721 722 StartSignalCatcher(); 723 724 // Start the JDWP thread. If the command-line debugger flags specified "suspend=y", 725 // this will pause the runtime, so we probably want this to come last. 726 Dbg::StartJdwp(); 727} 728 729void Runtime::StartSignalCatcher() { 730 if (!is_zygote_) { 731 signal_catcher_ = new SignalCatcher(stack_trace_file_); 732 } 733} 734 735bool Runtime::IsShuttingDown(Thread* self) { 736 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 737 return IsShuttingDownLocked(); 738} 739 740bool Runtime::IsDebuggable() const { 741 const OatFile* oat_file = GetOatFileManager().GetPrimaryOatFile(); 742 return oat_file != nullptr && oat_file->IsDebuggable(); 743} 744 745void Runtime::StartDaemonThreads() { 746 ScopedTrace trace(__FUNCTION__); 747 VLOG(startup) << "Runtime::StartDaemonThreads entering"; 748 749 Thread* self = Thread::Current(); 750 751 // Must be in the kNative state for calling native methods. 752 CHECK_EQ(self->GetState(), kNative); 753 754 JNIEnv* env = self->GetJniEnv(); 755 env->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 756 WellKnownClasses::java_lang_Daemons_start); 757 if (env->ExceptionCheck()) { 758 env->ExceptionDescribe(); 759 LOG(FATAL) << "Error starting java.lang.Daemons"; 760 } 761 762 VLOG(startup) << "Runtime::StartDaemonThreads exiting"; 763} 764 765// Attempts to open dex files from image(s). Given the image location, try to find the oat file 766// and open it to get the stored dex file. If the image is the first for a multi-image boot 767// classpath, go on and also open the other images. 768static bool OpenDexFilesFromImage(const std::string& image_location, 769 std::vector<std::unique_ptr<const DexFile>>* dex_files, 770 size_t* failures) { 771 DCHECK(dex_files != nullptr) << "OpenDexFilesFromImage: out-param is nullptr"; 772 773 // Use a work-list approach, so that we can easily reuse the opening code. 774 std::vector<std::string> image_locations; 775 image_locations.push_back(image_location); 776 777 for (size_t index = 0; index < image_locations.size(); ++index) { 778 std::string system_filename; 779 bool has_system = false; 780 std::string cache_filename_unused; 781 bool dalvik_cache_exists_unused; 782 bool has_cache_unused; 783 bool is_global_cache_unused; 784 bool found_image = gc::space::ImageSpace::FindImageFilename(image_locations[index].c_str(), 785 kRuntimeISA, 786 &system_filename, 787 &has_system, 788 &cache_filename_unused, 789 &dalvik_cache_exists_unused, 790 &has_cache_unused, 791 &is_global_cache_unused); 792 793 if (!found_image || !has_system) { 794 return false; 795 } 796 797 // We are falling back to non-executable use of the oat file because patching failed, presumably 798 // due to lack of space. 799 std::string oat_filename = 800 ImageHeader::GetOatLocationFromImageLocation(system_filename.c_str()); 801 std::string oat_location = 802 ImageHeader::GetOatLocationFromImageLocation(image_locations[index].c_str()); 803 // Note: in the multi-image case, the image location may end in ".jar," and not ".art." Handle 804 // that here. 805 if (EndsWith(oat_location, ".jar")) { 806 oat_location.replace(oat_location.length() - 3, 3, "oat"); 807 } 808 809 std::unique_ptr<File> file(OS::OpenFileForReading(oat_filename.c_str())); 810 if (file.get() == nullptr) { 811 return false; 812 } 813 std::string error_msg; 814 std::unique_ptr<ElfFile> elf_file(ElfFile::Open(file.release(), 815 false, 816 false, 817 /*low_4gb*/false, 818 &error_msg)); 819 if (elf_file.get() == nullptr) { 820 return false; 821 } 822 std::unique_ptr<const OatFile> oat_file( 823 OatFile::OpenWithElfFile(elf_file.release(), oat_location, nullptr, &error_msg)); 824 if (oat_file == nullptr) { 825 LOG(WARNING) << "Unable to use '" << oat_filename << "' because " << error_msg; 826 return false; 827 } 828 829 for (const OatFile::OatDexFile* oat_dex_file : oat_file->GetOatDexFiles()) { 830 if (oat_dex_file == nullptr) { 831 *failures += 1; 832 continue; 833 } 834 std::unique_ptr<const DexFile> dex_file = oat_dex_file->OpenDexFile(&error_msg); 835 if (dex_file.get() == nullptr) { 836 *failures += 1; 837 } else { 838 dex_files->push_back(std::move(dex_file)); 839 } 840 } 841 842 if (index == 0) { 843 // First file. See if this is a multi-image environment, and if so, enqueue the other images. 844 const OatHeader& boot_oat_header = oat_file->GetOatHeader(); 845 const char* boot_cp = boot_oat_header.GetStoreValueByKey(OatHeader::kBootClassPath); 846 if (boot_cp != nullptr) { 847 gc::space::ImageSpace::CreateMultiImageLocations(image_locations[0], 848 boot_cp, 849 &image_locations); 850 } 851 } 852 853 Runtime::Current()->GetOatFileManager().RegisterOatFile(std::move(oat_file)); 854 } 855 return true; 856} 857 858 859static size_t OpenDexFiles(const std::vector<std::string>& dex_filenames, 860 const std::vector<std::string>& dex_locations, 861 const std::string& image_location, 862 std::vector<std::unique_ptr<const DexFile>>* dex_files) { 863 DCHECK(dex_files != nullptr) << "OpenDexFiles: out-param is nullptr"; 864 size_t failure_count = 0; 865 if (!image_location.empty() && OpenDexFilesFromImage(image_location, dex_files, &failure_count)) { 866 return failure_count; 867 } 868 failure_count = 0; 869 for (size_t i = 0; i < dex_filenames.size(); i++) { 870 const char* dex_filename = dex_filenames[i].c_str(); 871 const char* dex_location = dex_locations[i].c_str(); 872 std::string error_msg; 873 if (!OS::FileExists(dex_filename)) { 874 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 875 continue; 876 } 877 if (!DexFile::Open(dex_filename, dex_location, &error_msg, dex_files)) { 878 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 879 ++failure_count; 880 } 881 } 882 return failure_count; 883} 884 885void Runtime::SetSentinel(mirror::Object* sentinel) { 886 CHECK(sentinel_.Read() == nullptr); 887 CHECK(sentinel != nullptr); 888 CHECK(!heap_->IsMovableObject(sentinel)); 889 sentinel_ = GcRoot<mirror::Object>(sentinel); 890} 891 892bool Runtime::Init(RuntimeArgumentMap&& runtime_options_in) { 893 RuntimeArgumentMap runtime_options(std::move(runtime_options_in)); 894 ScopedTrace trace(__FUNCTION__); 895 CHECK_EQ(sysconf(_SC_PAGE_SIZE), kPageSize); 896 897 MemMap::Init(); 898 899 using Opt = RuntimeArgumentMap; 900 VLOG(startup) << "Runtime::Init -verbose:startup enabled"; 901 902 QuasiAtomic::Startup(); 903 904 oat_file_manager_ = new OatFileManager; 905 906 Monitor::Init(runtime_options.GetOrDefault(Opt::LockProfThreshold), 907 runtime_options.GetOrDefault(Opt::HookIsSensitiveThread)); 908 909 boot_class_path_string_ = runtime_options.ReleaseOrDefault(Opt::BootClassPath); 910 class_path_string_ = runtime_options.ReleaseOrDefault(Opt::ClassPath); 911 properties_ = runtime_options.ReleaseOrDefault(Opt::PropertiesList); 912 913 compiler_callbacks_ = runtime_options.GetOrDefault(Opt::CompilerCallbacksPtr); 914 patchoat_executable_ = runtime_options.ReleaseOrDefault(Opt::PatchOat); 915 must_relocate_ = runtime_options.GetOrDefault(Opt::Relocate); 916 is_zygote_ = runtime_options.Exists(Opt::Zygote); 917 is_explicit_gc_disabled_ = runtime_options.Exists(Opt::DisableExplicitGC); 918 dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::Dex2Oat); 919 image_dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::ImageDex2Oat); 920 dump_native_stack_on_sig_quit_ = runtime_options.GetOrDefault(Opt::DumpNativeStackOnSigQuit); 921 922 vfprintf_ = runtime_options.GetOrDefault(Opt::HookVfprintf); 923 exit_ = runtime_options.GetOrDefault(Opt::HookExit); 924 abort_ = runtime_options.GetOrDefault(Opt::HookAbort); 925 926 default_stack_size_ = runtime_options.GetOrDefault(Opt::StackSize); 927 stack_trace_file_ = runtime_options.ReleaseOrDefault(Opt::StackTraceFile); 928 929 compiler_executable_ = runtime_options.ReleaseOrDefault(Opt::Compiler); 930 compiler_options_ = runtime_options.ReleaseOrDefault(Opt::CompilerOptions); 931 image_compiler_options_ = runtime_options.ReleaseOrDefault(Opt::ImageCompilerOptions); 932 image_location_ = runtime_options.GetOrDefault(Opt::Image); 933 934 max_spins_before_thin_lock_inflation_ = 935 runtime_options.GetOrDefault(Opt::MaxSpinsBeforeThinLockInflation); 936 937 monitor_list_ = new MonitorList; 938 monitor_pool_ = MonitorPool::Create(); 939 thread_list_ = new ThreadList; 940 intern_table_ = new InternTable; 941 942 verify_ = runtime_options.GetOrDefault(Opt::Verify); 943 allow_dex_file_fallback_ = !runtime_options.Exists(Opt::NoDexFileFallback); 944 945 no_sig_chain_ = runtime_options.Exists(Opt::NoSigChain); 946 force_native_bridge_ = runtime_options.Exists(Opt::ForceNativeBridge); 947 948 Split(runtime_options.GetOrDefault(Opt::CpuAbiList), ',', &cpu_abilist_); 949 950 fingerprint_ = runtime_options.ReleaseOrDefault(Opt::Fingerprint); 951 952 if (runtime_options.GetOrDefault(Opt::Interpret)) { 953 GetInstrumentation()->ForceInterpretOnly(); 954 } 955 956 zygote_max_failed_boots_ = runtime_options.GetOrDefault(Opt::ZygoteMaxFailedBoots); 957 experimental_flags_ = runtime_options.GetOrDefault(Opt::Experimental); 958 is_low_memory_mode_ = runtime_options.Exists(Opt::LowMemoryMode); 959 960 XGcOption xgc_option = runtime_options.GetOrDefault(Opt::GcOption); 961 heap_ = new gc::Heap(runtime_options.GetOrDefault(Opt::MemoryInitialSize), 962 runtime_options.GetOrDefault(Opt::HeapGrowthLimit), 963 runtime_options.GetOrDefault(Opt::HeapMinFree), 964 runtime_options.GetOrDefault(Opt::HeapMaxFree), 965 runtime_options.GetOrDefault(Opt::HeapTargetUtilization), 966 runtime_options.GetOrDefault(Opt::ForegroundHeapGrowthMultiplier), 967 runtime_options.GetOrDefault(Opt::MemoryMaximumSize), 968 runtime_options.GetOrDefault(Opt::NonMovingSpaceCapacity), 969 runtime_options.GetOrDefault(Opt::Image), 970 runtime_options.GetOrDefault(Opt::ImageInstructionSet), 971 xgc_option.collector_type_, 972 runtime_options.GetOrDefault(Opt::BackgroundGc), 973 runtime_options.GetOrDefault(Opt::LargeObjectSpace), 974 runtime_options.GetOrDefault(Opt::LargeObjectThreshold), 975 runtime_options.GetOrDefault(Opt::ParallelGCThreads), 976 runtime_options.GetOrDefault(Opt::ConcGCThreads), 977 runtime_options.Exists(Opt::LowMemoryMode), 978 runtime_options.GetOrDefault(Opt::LongPauseLogThreshold), 979 runtime_options.GetOrDefault(Opt::LongGCLogThreshold), 980 runtime_options.Exists(Opt::IgnoreMaxFootprint), 981 runtime_options.GetOrDefault(Opt::UseTLAB), 982 xgc_option.verify_pre_gc_heap_, 983 xgc_option.verify_pre_sweeping_heap_, 984 xgc_option.verify_post_gc_heap_, 985 xgc_option.verify_pre_gc_rosalloc_, 986 xgc_option.verify_pre_sweeping_rosalloc_, 987 xgc_option.verify_post_gc_rosalloc_, 988 xgc_option.gcstress_, 989 runtime_options.GetOrDefault(Opt::EnableHSpaceCompactForOOM), 990 runtime_options.GetOrDefault(Opt::HSpaceCompactForOOMMinIntervalsMs)); 991 992 if (!heap_->HasBootImageSpace() && !allow_dex_file_fallback_) { 993 LOG(ERROR) << "Dex file fallback disabled, cannot continue without image."; 994 return false; 995 } 996 997 dump_gc_performance_on_shutdown_ = runtime_options.Exists(Opt::DumpGCPerformanceOnShutdown); 998 999 if (runtime_options.Exists(Opt::JdwpOptions)) { 1000 Dbg::ConfigureJdwp(runtime_options.GetOrDefault(Opt::JdwpOptions)); 1001 } 1002 1003 jit_options_.reset(jit::JitOptions::CreateFromRuntimeArguments(runtime_options)); 1004 if (IsAotCompiler()) { 1005 // If we are already the compiler at this point, we must be dex2oat. Don't create the jit in 1006 // this case. 1007 // If runtime_options doesn't have UseJIT set to true then CreateFromRuntimeArguments returns 1008 // null and we don't create the jit. 1009 jit_options_->SetUseJIT(false); 1010 } 1011 1012 // Allocate a global table of boxed lambda objects <-> closures. 1013 lambda_box_table_ = MakeUnique<lambda::BoxTable>(); 1014 1015 // Use MemMap arena pool for jit, malloc otherwise. Malloc arenas are faster to allocate but 1016 // can't be trimmed as easily. 1017 const bool use_malloc = IsAotCompiler(); 1018 arena_pool_.reset(new ArenaPool(use_malloc, /* low_4gb */ false)); 1019 jit_arena_pool_.reset( 1020 new ArenaPool(/* use_malloc */ false, /* low_4gb */ false, "CompilerMetadata")); 1021 1022 if (IsAotCompiler() && Is64BitInstructionSet(kRuntimeISA)) { 1023 // 4gb, no malloc. Explanation in header. 1024 low_4gb_arena_pool_.reset(new ArenaPool(/* use_malloc */ false, /* low_4gb */ true)); 1025 } 1026 linear_alloc_.reset(CreateLinearAlloc()); 1027 1028 BlockSignals(); 1029 InitPlatformSignalHandlers(); 1030 1031 // Change the implicit checks flags based on runtime architecture. 1032 switch (kRuntimeISA) { 1033 case kArm: 1034 case kThumb2: 1035 case kX86: 1036 case kArm64: 1037 case kX86_64: 1038 case kMips: 1039 case kMips64: 1040 implicit_null_checks_ = true; 1041 // Installing stack protection does not play well with valgrind. 1042 implicit_so_checks_ = !(RUNNING_ON_MEMORY_TOOL && kMemoryToolIsValgrind); 1043 break; 1044 default: 1045 // Keep the defaults. 1046 break; 1047 } 1048 1049 if (!no_sig_chain_) { 1050 // Dex2Oat's Runtime does not need the signal chain or the fault handler. 1051 1052 // Initialize the signal chain so that any calls to sigaction get 1053 // correctly routed to the next in the chain regardless of whether we 1054 // have claimed the signal or not. 1055 InitializeSignalChain(); 1056 1057 if (implicit_null_checks_ || implicit_so_checks_ || implicit_suspend_checks_) { 1058 fault_manager.Init(); 1059 1060 // These need to be in a specific order. The null point check handler must be 1061 // after the suspend check and stack overflow check handlers. 1062 // 1063 // Note: the instances attach themselves to the fault manager and are handled by it. The manager 1064 // will delete the instance on Shutdown(). 1065 if (implicit_suspend_checks_) { 1066 new SuspensionHandler(&fault_manager); 1067 } 1068 1069 if (implicit_so_checks_) { 1070 new StackOverflowHandler(&fault_manager); 1071 } 1072 1073 if (implicit_null_checks_) { 1074 new NullPointerHandler(&fault_manager); 1075 } 1076 1077 if (kEnableJavaStackTraceHandler) { 1078 new JavaStackTraceHandler(&fault_manager); 1079 } 1080 } 1081 } 1082 1083 java_vm_ = new JavaVMExt(this, runtime_options); 1084 1085 Thread::Startup(); 1086 1087 // ClassLinker needs an attached thread, but we can't fully attach a thread without creating 1088 // objects. We can't supply a thread group yet; it will be fixed later. Since we are the main 1089 // thread, we do not get a java peer. 1090 Thread* self = Thread::Attach("main", false, nullptr, false); 1091 CHECK_EQ(self->GetThreadId(), ThreadList::kMainThreadId); 1092 CHECK(self != nullptr); 1093 1094 // Set us to runnable so tools using a runtime can allocate and GC by default 1095 self->TransitionFromSuspendedToRunnable(); 1096 1097 // Now we're attached, we can take the heap locks and validate the heap. 1098 GetHeap()->EnableObjectValidation(); 1099 1100 CHECK_GE(GetHeap()->GetContinuousSpaces().size(), 1U); 1101 class_linker_ = new ClassLinker(intern_table_); 1102 if (GetHeap()->HasBootImageSpace()) { 1103 std::string error_msg; 1104 bool result = class_linker_->InitFromBootImage(&error_msg); 1105 if (!result) { 1106 LOG(ERROR) << "Could not initialize from image: " << error_msg; 1107 return false; 1108 } 1109 if (kIsDebugBuild) { 1110 for (auto image_space : GetHeap()->GetBootImageSpaces()) { 1111 image_space->VerifyImageAllocations(); 1112 } 1113 } 1114 if (boot_class_path_string_.empty()) { 1115 // The bootclasspath is not explicitly specified: construct it from the loaded dex files. 1116 const std::vector<const DexFile*>& boot_class_path = GetClassLinker()->GetBootClassPath(); 1117 std::vector<std::string> dex_locations; 1118 dex_locations.reserve(boot_class_path.size()); 1119 for (const DexFile* dex_file : boot_class_path) { 1120 dex_locations.push_back(dex_file->GetLocation()); 1121 } 1122 boot_class_path_string_ = Join(dex_locations, ':'); 1123 } 1124 } else { 1125 std::vector<std::string> dex_filenames; 1126 Split(boot_class_path_string_, ':', &dex_filenames); 1127 1128 std::vector<std::string> dex_locations; 1129 if (!runtime_options.Exists(Opt::BootClassPathLocations)) { 1130 dex_locations = dex_filenames; 1131 } else { 1132 dex_locations = runtime_options.GetOrDefault(Opt::BootClassPathLocations); 1133 CHECK_EQ(dex_filenames.size(), dex_locations.size()); 1134 } 1135 1136 std::vector<std::unique_ptr<const DexFile>> boot_class_path; 1137 if (runtime_options.Exists(Opt::BootClassPathDexList)) { 1138 boot_class_path.swap(*runtime_options.GetOrDefault(Opt::BootClassPathDexList)); 1139 } else { 1140 OpenDexFiles(dex_filenames, 1141 dex_locations, 1142 runtime_options.GetOrDefault(Opt::Image), 1143 &boot_class_path); 1144 } 1145 instruction_set_ = runtime_options.GetOrDefault(Opt::ImageInstructionSet); 1146 std::string error_msg; 1147 if (!class_linker_->InitWithoutImage(std::move(boot_class_path), &error_msg)) { 1148 LOG(ERROR) << "Could not initialize without image: " << error_msg; 1149 return false; 1150 } 1151 1152 // TODO: Should we move the following to InitWithoutImage? 1153 SetInstructionSet(instruction_set_); 1154 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 1155 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 1156 if (!HasCalleeSaveMethod(type)) { 1157 SetCalleeSaveMethod(CreateCalleeSaveMethod(), type); 1158 } 1159 } 1160 } 1161 1162 CHECK(class_linker_ != nullptr); 1163 1164 verifier::MethodVerifier::Init(); 1165 1166 if (runtime_options.Exists(Opt::MethodTrace)) { 1167 trace_config_.reset(new TraceConfig()); 1168 trace_config_->trace_file = runtime_options.ReleaseOrDefault(Opt::MethodTraceFile); 1169 trace_config_->trace_file_size = runtime_options.ReleaseOrDefault(Opt::MethodTraceFileSize); 1170 trace_config_->trace_mode = Trace::TraceMode::kMethodTracing; 1171 trace_config_->trace_output_mode = runtime_options.Exists(Opt::MethodTraceStreaming) ? 1172 Trace::TraceOutputMode::kStreaming : 1173 Trace::TraceOutputMode::kFile; 1174 } 1175 1176 { 1177 auto&& profiler_options = runtime_options.ReleaseOrDefault(Opt::ProfilerOpts); 1178 profile_output_filename_ = profiler_options.output_file_name_; 1179 1180 // TODO: Don't do this, just change ProfilerOptions to include the output file name? 1181 ProfilerOptions other_options( 1182 profiler_options.enabled_, 1183 profiler_options.period_s_, 1184 profiler_options.duration_s_, 1185 profiler_options.interval_us_, 1186 profiler_options.backoff_coefficient_, 1187 profiler_options.start_immediately_, 1188 profiler_options.top_k_threshold_, 1189 profiler_options.top_k_change_threshold_, 1190 profiler_options.profile_type_, 1191 profiler_options.max_stack_depth_); 1192 1193 profiler_options_ = other_options; 1194 } 1195 1196 // TODO: move this to just be an Trace::Start argument 1197 Trace::SetDefaultClockSource(runtime_options.GetOrDefault(Opt::ProfileClock)); 1198 1199 // Pre-allocate an OutOfMemoryError for the double-OOME case. 1200 self->ThrowNewException("Ljava/lang/OutOfMemoryError;", 1201 "OutOfMemoryError thrown while trying to throw OutOfMemoryError; " 1202 "no stack trace available"); 1203 pre_allocated_OutOfMemoryError_ = GcRoot<mirror::Throwable>(self->GetException()); 1204 self->ClearException(); 1205 1206 // Pre-allocate a NoClassDefFoundError for the common case of failing to find a system class 1207 // ahead of checking the application's class loader. 1208 self->ThrowNewException("Ljava/lang/NoClassDefFoundError;", 1209 "Class not found using the boot class loader; no stack trace available"); 1210 pre_allocated_NoClassDefFoundError_ = GcRoot<mirror::Throwable>(self->GetException()); 1211 self->ClearException(); 1212 1213 // Look for a native bridge. 1214 // 1215 // The intended flow here is, in the case of a running system: 1216 // 1217 // Runtime::Init() (zygote): 1218 // LoadNativeBridge -> dlopen from cmd line parameter. 1219 // | 1220 // V 1221 // Runtime::Start() (zygote): 1222 // No-op wrt native bridge. 1223 // | 1224 // | start app 1225 // V 1226 // DidForkFromZygote(action) 1227 // action = kUnload -> dlclose native bridge. 1228 // action = kInitialize -> initialize library 1229 // 1230 // 1231 // The intended flow here is, in the case of a simple dalvikvm call: 1232 // 1233 // Runtime::Init(): 1234 // LoadNativeBridge -> dlopen from cmd line parameter. 1235 // | 1236 // V 1237 // Runtime::Start(): 1238 // DidForkFromZygote(kInitialize) -> try to initialize any native bridge given. 1239 // No-op wrt native bridge. 1240 { 1241 std::string native_bridge_file_name = runtime_options.ReleaseOrDefault(Opt::NativeBridge); 1242 is_native_bridge_loaded_ = LoadNativeBridge(native_bridge_file_name); 1243 } 1244 1245 VLOG(startup) << "Runtime::Init exiting"; 1246 1247 return true; 1248} 1249 1250void Runtime::InitNativeMethods() { 1251 VLOG(startup) << "Runtime::InitNativeMethods entering"; 1252 Thread* self = Thread::Current(); 1253 JNIEnv* env = self->GetJniEnv(); 1254 1255 // Must be in the kNative state for calling native methods (JNI_OnLoad code). 1256 CHECK_EQ(self->GetState(), kNative); 1257 1258 // First set up JniConstants, which is used by both the runtime's built-in native 1259 // methods and libcore. 1260 JniConstants::init(env); 1261 1262 // Then set up the native methods provided by the runtime itself. 1263 RegisterRuntimeNativeMethods(env); 1264 1265 // Initialize classes used in JNI. The initialization requires runtime native 1266 // methods to be loaded first. 1267 WellKnownClasses::Init(env); 1268 1269 // Then set up libjavacore / libopenjdk, which are just a regular JNI libraries with 1270 // a regular JNI_OnLoad. Most JNI libraries can just use System.loadLibrary, but 1271 // libcore can't because it's the library that implements System.loadLibrary! 1272 { 1273 std::string error_msg; 1274 if (!java_vm_->LoadNativeLibrary(env, "libjavacore.so", nullptr, nullptr, &error_msg)) { 1275 LOG(FATAL) << "LoadNativeLibrary failed for \"libjavacore.so\": " << error_msg; 1276 } 1277 } 1278 { 1279 constexpr const char* kOpenJdkLibrary = kIsDebugBuild 1280 ? "libopenjdkd.so" 1281 : "libopenjdk.so"; 1282 std::string error_msg; 1283 if (!java_vm_->LoadNativeLibrary(env, kOpenJdkLibrary, nullptr, nullptr, &error_msg)) { 1284 LOG(FATAL) << "LoadNativeLibrary failed for \"" << kOpenJdkLibrary << "\": " << error_msg; 1285 } 1286 } 1287 1288 // Initialize well known classes that may invoke runtime native methods. 1289 WellKnownClasses::LateInit(env); 1290 1291 VLOG(startup) << "Runtime::InitNativeMethods exiting"; 1292} 1293 1294void Runtime::ReclaimArenaPoolMemory() { 1295 arena_pool_->LockReclaimMemory(); 1296} 1297 1298void Runtime::InitThreadGroups(Thread* self) { 1299 JNIEnvExt* env = self->GetJniEnv(); 1300 ScopedJniEnvLocalRefState env_state(env); 1301 main_thread_group_ = 1302 env->NewGlobalRef(env->GetStaticObjectField( 1303 WellKnownClasses::java_lang_ThreadGroup, 1304 WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup)); 1305 CHECK(main_thread_group_ != nullptr || IsAotCompiler()); 1306 system_thread_group_ = 1307 env->NewGlobalRef(env->GetStaticObjectField( 1308 WellKnownClasses::java_lang_ThreadGroup, 1309 WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup)); 1310 CHECK(system_thread_group_ != nullptr || IsAotCompiler()); 1311} 1312 1313jobject Runtime::GetMainThreadGroup() const { 1314 CHECK(main_thread_group_ != nullptr || IsAotCompiler()); 1315 return main_thread_group_; 1316} 1317 1318jobject Runtime::GetSystemThreadGroup() const { 1319 CHECK(system_thread_group_ != nullptr || IsAotCompiler()); 1320 return system_thread_group_; 1321} 1322 1323jobject Runtime::GetSystemClassLoader() const { 1324 CHECK(system_class_loader_ != nullptr || IsAotCompiler()); 1325 return system_class_loader_; 1326} 1327 1328void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) { 1329 register_dalvik_system_DexFile(env); 1330 register_dalvik_system_VMDebug(env); 1331 register_dalvik_system_VMRuntime(env); 1332 register_dalvik_system_VMStack(env); 1333 register_dalvik_system_ZygoteHooks(env); 1334 register_java_lang_Class(env); 1335 register_java_lang_DexCache(env); 1336 register_java_lang_Object(env); 1337 register_java_lang_ref_FinalizerReference(env); 1338 register_java_lang_reflect_Array(env); 1339 register_java_lang_reflect_Constructor(env); 1340 register_java_lang_reflect_Field(env); 1341 register_java_lang_reflect_Method(env); 1342 register_java_lang_reflect_Proxy(env); 1343 register_java_lang_ref_Reference(env); 1344 register_java_lang_Runtime(env); 1345 register_java_lang_String(env); 1346 register_java_lang_StringFactory(env); 1347 register_java_lang_System(env); 1348 register_java_lang_Thread(env); 1349 register_java_lang_Throwable(env); 1350 register_java_lang_VMClassLoader(env); 1351 register_java_util_concurrent_atomic_AtomicLong(env); 1352 register_libcore_util_CharsetUtils(env); 1353 register_org_apache_harmony_dalvik_ddmc_DdmServer(env); 1354 register_org_apache_harmony_dalvik_ddmc_DdmVmInternal(env); 1355 register_sun_misc_Unsafe(env); 1356} 1357 1358void Runtime::DumpForSigQuit(std::ostream& os) { 1359 // Dumping for SIGQIT may cause deadlocks if the the debugger is active. b/26118154 1360 if (Dbg::IsDebuggerActive()) { 1361 LOG(INFO) << "Skipping DumpForSigQuit due to active debugger"; 1362 return; 1363 } 1364 GetClassLinker()->DumpForSigQuit(os); 1365 GetInternTable()->DumpForSigQuit(os); 1366 GetJavaVM()->DumpForSigQuit(os); 1367 GetHeap()->DumpForSigQuit(os); 1368 if (GetJit() != nullptr) { 1369 GetJit()->DumpForSigQuit(os); 1370 } else { 1371 os << "Running non JIT\n"; 1372 } 1373 TrackedAllocators::Dump(os); 1374 os << "\n"; 1375 1376 thread_list_->DumpForSigQuit(os); 1377 BaseMutex::DumpAll(os); 1378} 1379 1380void Runtime::DumpLockHolders(std::ostream& os) { 1381 uint64_t mutator_lock_owner = Locks::mutator_lock_->GetExclusiveOwnerTid(); 1382 pid_t thread_list_lock_owner = GetThreadList()->GetLockOwner(); 1383 pid_t classes_lock_owner = GetClassLinker()->GetClassesLockOwner(); 1384 pid_t dex_lock_owner = GetClassLinker()->GetDexLockOwner(); 1385 if ((thread_list_lock_owner | classes_lock_owner | dex_lock_owner) != 0) { 1386 os << "Mutator lock exclusive owner tid: " << mutator_lock_owner << "\n" 1387 << "ThreadList lock owner tid: " << thread_list_lock_owner << "\n" 1388 << "ClassLinker classes lock owner tid: " << classes_lock_owner << "\n" 1389 << "ClassLinker dex lock owner tid: " << dex_lock_owner << "\n"; 1390 } 1391} 1392 1393void Runtime::SetStatsEnabled(bool new_state) { 1394 Thread* self = Thread::Current(); 1395 MutexLock mu(self, *Locks::instrument_entrypoints_lock_); 1396 if (new_state == true) { 1397 GetStats()->Clear(~0); 1398 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1399 self->GetStats()->Clear(~0); 1400 if (stats_enabled_ != new_state) { 1401 GetInstrumentation()->InstrumentQuickAllocEntryPointsLocked(); 1402 } 1403 } else if (stats_enabled_ != new_state) { 1404 GetInstrumentation()->UninstrumentQuickAllocEntryPointsLocked(); 1405 } 1406 stats_enabled_ = new_state; 1407} 1408 1409void Runtime::ResetStats(int kinds) { 1410 GetStats()->Clear(kinds & 0xffff); 1411 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1412 Thread::Current()->GetStats()->Clear(kinds >> 16); 1413} 1414 1415int32_t Runtime::GetStat(int kind) { 1416 RuntimeStats* stats; 1417 if (kind < (1<<16)) { 1418 stats = GetStats(); 1419 } else { 1420 stats = Thread::Current()->GetStats(); 1421 kind >>= 16; 1422 } 1423 switch (kind) { 1424 case KIND_ALLOCATED_OBJECTS: 1425 return stats->allocated_objects; 1426 case KIND_ALLOCATED_BYTES: 1427 return stats->allocated_bytes; 1428 case KIND_FREED_OBJECTS: 1429 return stats->freed_objects; 1430 case KIND_FREED_BYTES: 1431 return stats->freed_bytes; 1432 case KIND_GC_INVOCATIONS: 1433 return stats->gc_for_alloc_count; 1434 case KIND_CLASS_INIT_COUNT: 1435 return stats->class_init_count; 1436 case KIND_CLASS_INIT_TIME: 1437 // Convert ns to us, reduce to 32 bits. 1438 return static_cast<int>(stats->class_init_time_ns / 1000); 1439 case KIND_EXT_ALLOCATED_OBJECTS: 1440 case KIND_EXT_ALLOCATED_BYTES: 1441 case KIND_EXT_FREED_OBJECTS: 1442 case KIND_EXT_FREED_BYTES: 1443 return 0; // backward compatibility 1444 default: 1445 LOG(FATAL) << "Unknown statistic " << kind; 1446 return -1; // unreachable 1447 } 1448} 1449 1450void Runtime::BlockSignals() { 1451 SignalSet signals; 1452 signals.Add(SIGPIPE); 1453 // SIGQUIT is used to dump the runtime's state (including stack traces). 1454 signals.Add(SIGQUIT); 1455 // SIGUSR1 is used to initiate a GC. 1456 signals.Add(SIGUSR1); 1457 signals.Block(); 1458} 1459 1460bool Runtime::AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group, 1461 bool create_peer) { 1462 ScopedTrace trace(__FUNCTION__); 1463 return Thread::Attach(thread_name, as_daemon, thread_group, create_peer) != nullptr; 1464} 1465 1466void Runtime::DetachCurrentThread() { 1467 ScopedTrace trace(__FUNCTION__); 1468 Thread* self = Thread::Current(); 1469 if (self == nullptr) { 1470 LOG(FATAL) << "attempting to detach thread that is not attached"; 1471 } 1472 if (self->HasManagedStack()) { 1473 LOG(FATAL) << *Thread::Current() << " attempting to detach while still running code"; 1474 } 1475 thread_list_->Unregister(self); 1476} 1477 1478mirror::Throwable* Runtime::GetPreAllocatedOutOfMemoryError() { 1479 mirror::Throwable* oome = pre_allocated_OutOfMemoryError_.Read(); 1480 if (oome == nullptr) { 1481 LOG(ERROR) << "Failed to return pre-allocated OOME"; 1482 } 1483 return oome; 1484} 1485 1486mirror::Throwable* Runtime::GetPreAllocatedNoClassDefFoundError() { 1487 mirror::Throwable* ncdfe = pre_allocated_NoClassDefFoundError_.Read(); 1488 if (ncdfe == nullptr) { 1489 LOG(ERROR) << "Failed to return pre-allocated NoClassDefFoundError"; 1490 } 1491 return ncdfe; 1492} 1493 1494void Runtime::VisitConstantRoots(RootVisitor* visitor) { 1495 // Visit the classes held as static in mirror classes, these can be visited concurrently and only 1496 // need to be visited once per GC since they never change. 1497 mirror::Class::VisitRoots(visitor); 1498 mirror::Constructor::VisitRoots(visitor); 1499 mirror::Reference::VisitRoots(visitor); 1500 mirror::Method::VisitRoots(visitor); 1501 mirror::StackTraceElement::VisitRoots(visitor); 1502 mirror::String::VisitRoots(visitor); 1503 mirror::Throwable::VisitRoots(visitor); 1504 mirror::Field::VisitRoots(visitor); 1505 // Visit all the primitive array types classes. 1506 mirror::PrimitiveArray<uint8_t>::VisitRoots(visitor); // BooleanArray 1507 mirror::PrimitiveArray<int8_t>::VisitRoots(visitor); // ByteArray 1508 mirror::PrimitiveArray<uint16_t>::VisitRoots(visitor); // CharArray 1509 mirror::PrimitiveArray<double>::VisitRoots(visitor); // DoubleArray 1510 mirror::PrimitiveArray<float>::VisitRoots(visitor); // FloatArray 1511 mirror::PrimitiveArray<int32_t>::VisitRoots(visitor); // IntArray 1512 mirror::PrimitiveArray<int64_t>::VisitRoots(visitor); // LongArray 1513 mirror::PrimitiveArray<int16_t>::VisitRoots(visitor); // ShortArray 1514 // Visiting the roots of these ArtMethods is not currently required since all the GcRoots are 1515 // null. 1516 BufferedRootVisitor<16> buffered_visitor(visitor, RootInfo(kRootVMInternal)); 1517 const size_t pointer_size = GetClassLinker()->GetImagePointerSize(); 1518 if (HasResolutionMethod()) { 1519 resolution_method_->VisitRoots(buffered_visitor, pointer_size); 1520 } 1521 if (HasImtConflictMethod()) { 1522 imt_conflict_method_->VisitRoots(buffered_visitor, pointer_size); 1523 } 1524 if (imt_unimplemented_method_ != nullptr) { 1525 imt_unimplemented_method_->VisitRoots(buffered_visitor, pointer_size); 1526 } 1527 for (size_t i = 0; i < kLastCalleeSaveType; ++i) { 1528 auto* m = reinterpret_cast<ArtMethod*>(callee_save_methods_[i]); 1529 if (m != nullptr) { 1530 m->VisitRoots(buffered_visitor, pointer_size); 1531 } 1532 } 1533} 1534 1535void Runtime::VisitConcurrentRoots(RootVisitor* visitor, VisitRootFlags flags) { 1536 intern_table_->VisitRoots(visitor, flags); 1537 class_linker_->VisitRoots(visitor, flags); 1538 heap_->VisitAllocationRecords(visitor); 1539 if ((flags & kVisitRootFlagNewRoots) == 0) { 1540 // Guaranteed to have no new roots in the constant roots. 1541 VisitConstantRoots(visitor); 1542 } 1543 Dbg::VisitRoots(visitor); 1544} 1545 1546void Runtime::VisitTransactionRoots(RootVisitor* visitor) { 1547 if (preinitialization_transaction_ != nullptr) { 1548 preinitialization_transaction_->VisitRoots(visitor); 1549 } 1550} 1551 1552void Runtime::VisitNonThreadRoots(RootVisitor* visitor) { 1553 java_vm_->VisitRoots(visitor); 1554 sentinel_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1555 pre_allocated_OutOfMemoryError_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1556 pre_allocated_NoClassDefFoundError_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1557 verifier::MethodVerifier::VisitStaticRoots(visitor); 1558 VisitTransactionRoots(visitor); 1559} 1560 1561void Runtime::VisitNonConcurrentRoots(RootVisitor* visitor) { 1562 thread_list_->VisitRoots(visitor); 1563 VisitNonThreadRoots(visitor); 1564} 1565 1566void Runtime::VisitThreadRoots(RootVisitor* visitor) { 1567 thread_list_->VisitRoots(visitor); 1568} 1569 1570size_t Runtime::FlipThreadRoots(Closure* thread_flip_visitor, Closure* flip_callback, 1571 gc::collector::GarbageCollector* collector) { 1572 return thread_list_->FlipThreadRoots(thread_flip_visitor, flip_callback, collector); 1573} 1574 1575void Runtime::VisitRoots(RootVisitor* visitor, VisitRootFlags flags) { 1576 VisitNonConcurrentRoots(visitor); 1577 VisitConcurrentRoots(visitor, flags); 1578} 1579 1580void Runtime::VisitImageRoots(RootVisitor* visitor) { 1581 for (auto* space : GetHeap()->GetContinuousSpaces()) { 1582 if (space->IsImageSpace()) { 1583 auto* image_space = space->AsImageSpace(); 1584 const auto& image_header = image_space->GetImageHeader(); 1585 for (size_t i = 0; i < ImageHeader::kImageRootsMax; ++i) { 1586 auto* obj = image_header.GetImageRoot(static_cast<ImageHeader::ImageRoot>(i)); 1587 if (obj != nullptr) { 1588 auto* after_obj = obj; 1589 visitor->VisitRoot(&after_obj, RootInfo(kRootStickyClass)); 1590 CHECK_EQ(after_obj, obj); 1591 } 1592 } 1593 } 1594 } 1595} 1596 1597ArtMethod* Runtime::CreateImtConflictMethod() { 1598 auto* method = Runtime::Current()->GetClassLinker()->CreateRuntimeMethod(); 1599 // When compiling, the code pointer will get set later when the image is loaded. 1600 if (IsAotCompiler()) { 1601 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1602 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1603 } else { 1604 method->SetEntryPointFromQuickCompiledCode(GetQuickImtConflictStub()); 1605 } 1606 return method; 1607} 1608 1609void Runtime::SetImtConflictMethod(ArtMethod* method) { 1610 CHECK(method != nullptr); 1611 CHECK(method->IsRuntimeMethod()); 1612 imt_conflict_method_ = method; 1613} 1614 1615ArtMethod* Runtime::CreateResolutionMethod() { 1616 auto* method = Runtime::Current()->GetClassLinker()->CreateRuntimeMethod(); 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(GetQuickResolutionStub()); 1623 } 1624 return method; 1625} 1626 1627ArtMethod* Runtime::CreateCalleeSaveMethod() { 1628 auto* method = Runtime::Current()->GetClassLinker()->CreateRuntimeMethod(); 1629 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1630 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1631 DCHECK_NE(instruction_set_, kNone); 1632 DCHECK(method->IsRuntimeMethod()); 1633 return method; 1634} 1635 1636void Runtime::DisallowNewSystemWeaks() { 1637 CHECK(!kUseReadBarrier); 1638 monitor_list_->DisallowNewMonitors(); 1639 intern_table_->ChangeWeakRootState(gc::kWeakRootStateNoReadsOrWrites); 1640 java_vm_->DisallowNewWeakGlobals(); 1641 heap_->DisallowNewAllocationRecords(); 1642 lambda_box_table_->DisallowNewWeakBoxedLambdas(); 1643} 1644 1645void Runtime::AllowNewSystemWeaks() { 1646 CHECK(!kUseReadBarrier); 1647 monitor_list_->AllowNewMonitors(); 1648 intern_table_->ChangeWeakRootState(gc::kWeakRootStateNormal); // TODO: Do this in the sweeping. 1649 java_vm_->AllowNewWeakGlobals(); 1650 heap_->AllowNewAllocationRecords(); 1651 lambda_box_table_->AllowNewWeakBoxedLambdas(); 1652} 1653 1654void Runtime::BroadcastForNewSystemWeaks() { 1655 // This is used for the read barrier case that uses the thread-local 1656 // Thread::GetWeakRefAccessEnabled() flag. 1657 CHECK(kUseReadBarrier); 1658 monitor_list_->BroadcastForNewMonitors(); 1659 intern_table_->BroadcastForNewInterns(); 1660 java_vm_->BroadcastForNewWeakGlobals(); 1661 heap_->BroadcastForNewAllocationRecords(); 1662 lambda_box_table_->BroadcastForNewWeakBoxedLambdas(); 1663} 1664 1665void Runtime::SetInstructionSet(InstructionSet instruction_set) { 1666 instruction_set_ = instruction_set; 1667 if ((instruction_set_ == kThumb2) || (instruction_set_ == kArm)) { 1668 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1669 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1670 callee_save_method_frame_infos_[i] = arm::ArmCalleeSaveMethodFrameInfo(type); 1671 } 1672 } else if (instruction_set_ == kMips) { 1673 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1674 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1675 callee_save_method_frame_infos_[i] = mips::MipsCalleeSaveMethodFrameInfo(type); 1676 } 1677 } else if (instruction_set_ == kMips64) { 1678 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1679 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1680 callee_save_method_frame_infos_[i] = mips64::Mips64CalleeSaveMethodFrameInfo(type); 1681 } 1682 } else if (instruction_set_ == kX86) { 1683 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1684 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1685 callee_save_method_frame_infos_[i] = x86::X86CalleeSaveMethodFrameInfo(type); 1686 } 1687 } else if (instruction_set_ == kX86_64) { 1688 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1689 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1690 callee_save_method_frame_infos_[i] = x86_64::X86_64CalleeSaveMethodFrameInfo(type); 1691 } 1692 } else if (instruction_set_ == kArm64) { 1693 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1694 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1695 callee_save_method_frame_infos_[i] = arm64::Arm64CalleeSaveMethodFrameInfo(type); 1696 } 1697 } else { 1698 UNIMPLEMENTED(FATAL) << instruction_set_; 1699 } 1700} 1701 1702void Runtime::SetCalleeSaveMethod(ArtMethod* method, CalleeSaveType type) { 1703 DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType)); 1704 CHECK(method != nullptr); 1705 callee_save_methods_[type] = reinterpret_cast<uintptr_t>(method); 1706} 1707 1708void Runtime::RegisterAppInfo(const std::vector<std::string>& code_paths, 1709 const std::string& profile_output_filename, 1710 const std::string& foreign_dex_profile_path, 1711 const std::string& app_dir) { 1712 if (jit_.get() == nullptr) { 1713 // We are not JITing. Nothing to do. 1714 return; 1715 } 1716 1717 VLOG(profiler) << "Register app with " << profile_output_filename 1718 << " " << Join(code_paths, ':'); 1719 1720 if (profile_output_filename.empty()) { 1721 LOG(WARNING) << "JIT profile information will not be recorded: profile filename is empty."; 1722 return; 1723 } 1724 if (!FileExists(profile_output_filename)) { 1725 LOG(WARNING) << "JIT profile information will not be recorded: profile file does not exits."; 1726 return; 1727 } 1728 if (code_paths.empty()) { 1729 LOG(WARNING) << "JIT profile information will not be recorded: code paths is empty."; 1730 return; 1731 } 1732 1733 profile_output_filename_ = profile_output_filename; 1734 jit_->StartProfileSaver(profile_output_filename, 1735 code_paths, 1736 foreign_dex_profile_path, 1737 app_dir); 1738} 1739 1740void Runtime::NotifyDexLoaded(const std::string& dex_location) { 1741 VLOG(profiler) << "Notify dex loaded: " << dex_location; 1742 // We know that if the ProfileSaver is started then we can record profile information. 1743 if (ProfileSaver::IsStarted()) { 1744 ProfileSaver::NotifyDexUse(dex_location); 1745 } 1746} 1747 1748// Transaction support. 1749void Runtime::EnterTransactionMode(Transaction* transaction) { 1750 DCHECK(IsAotCompiler()); 1751 DCHECK(transaction != nullptr); 1752 DCHECK(!IsActiveTransaction()); 1753 preinitialization_transaction_ = transaction; 1754} 1755 1756void Runtime::ExitTransactionMode() { 1757 DCHECK(IsAotCompiler()); 1758 DCHECK(IsActiveTransaction()); 1759 preinitialization_transaction_ = nullptr; 1760} 1761 1762bool Runtime::IsTransactionAborted() const { 1763 if (!IsActiveTransaction()) { 1764 return false; 1765 } else { 1766 DCHECK(IsAotCompiler()); 1767 return preinitialization_transaction_->IsAborted(); 1768 } 1769} 1770 1771void Runtime::AbortTransactionAndThrowAbortError(Thread* self, const std::string& abort_message) { 1772 DCHECK(IsAotCompiler()); 1773 DCHECK(IsActiveTransaction()); 1774 // Throwing an exception may cause its class initialization. If we mark the transaction 1775 // aborted before that, we may warn with a false alarm. Throwing the exception before 1776 // marking the transaction aborted avoids that. 1777 preinitialization_transaction_->ThrowAbortError(self, &abort_message); 1778 preinitialization_transaction_->Abort(abort_message); 1779} 1780 1781void Runtime::ThrowTransactionAbortError(Thread* self) { 1782 DCHECK(IsAotCompiler()); 1783 DCHECK(IsActiveTransaction()); 1784 // Passing nullptr means we rethrow an exception with the earlier transaction abort message. 1785 preinitialization_transaction_->ThrowAbortError(self, nullptr); 1786} 1787 1788void Runtime::RecordWriteFieldBoolean(mirror::Object* obj, MemberOffset field_offset, 1789 uint8_t value, bool is_volatile) const { 1790 DCHECK(IsAotCompiler()); 1791 DCHECK(IsActiveTransaction()); 1792 preinitialization_transaction_->RecordWriteFieldBoolean(obj, field_offset, value, is_volatile); 1793} 1794 1795void Runtime::RecordWriteFieldByte(mirror::Object* obj, MemberOffset field_offset, 1796 int8_t value, bool is_volatile) const { 1797 DCHECK(IsAotCompiler()); 1798 DCHECK(IsActiveTransaction()); 1799 preinitialization_transaction_->RecordWriteFieldByte(obj, field_offset, value, is_volatile); 1800} 1801 1802void Runtime::RecordWriteFieldChar(mirror::Object* obj, MemberOffset field_offset, 1803 uint16_t value, bool is_volatile) const { 1804 DCHECK(IsAotCompiler()); 1805 DCHECK(IsActiveTransaction()); 1806 preinitialization_transaction_->RecordWriteFieldChar(obj, field_offset, value, is_volatile); 1807} 1808 1809void Runtime::RecordWriteFieldShort(mirror::Object* obj, MemberOffset field_offset, 1810 int16_t value, bool is_volatile) const { 1811 DCHECK(IsAotCompiler()); 1812 DCHECK(IsActiveTransaction()); 1813 preinitialization_transaction_->RecordWriteFieldShort(obj, field_offset, value, is_volatile); 1814} 1815 1816void Runtime::RecordWriteField32(mirror::Object* obj, MemberOffset field_offset, 1817 uint32_t value, bool is_volatile) const { 1818 DCHECK(IsAotCompiler()); 1819 DCHECK(IsActiveTransaction()); 1820 preinitialization_transaction_->RecordWriteField32(obj, field_offset, value, is_volatile); 1821} 1822 1823void Runtime::RecordWriteField64(mirror::Object* obj, MemberOffset field_offset, 1824 uint64_t value, bool is_volatile) const { 1825 DCHECK(IsAotCompiler()); 1826 DCHECK(IsActiveTransaction()); 1827 preinitialization_transaction_->RecordWriteField64(obj, field_offset, value, is_volatile); 1828} 1829 1830void Runtime::RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset, 1831 mirror::Object* value, bool is_volatile) const { 1832 DCHECK(IsAotCompiler()); 1833 DCHECK(IsActiveTransaction()); 1834 preinitialization_transaction_->RecordWriteFieldReference(obj, field_offset, value, is_volatile); 1835} 1836 1837void Runtime::RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const { 1838 DCHECK(IsAotCompiler()); 1839 DCHECK(IsActiveTransaction()); 1840 preinitialization_transaction_->RecordWriteArray(array, index, value); 1841} 1842 1843void Runtime::RecordStrongStringInsertion(mirror::String* s) const { 1844 DCHECK(IsAotCompiler()); 1845 DCHECK(IsActiveTransaction()); 1846 preinitialization_transaction_->RecordStrongStringInsertion(s); 1847} 1848 1849void Runtime::RecordWeakStringInsertion(mirror::String* s) const { 1850 DCHECK(IsAotCompiler()); 1851 DCHECK(IsActiveTransaction()); 1852 preinitialization_transaction_->RecordWeakStringInsertion(s); 1853} 1854 1855void Runtime::RecordStrongStringRemoval(mirror::String* s) const { 1856 DCHECK(IsAotCompiler()); 1857 DCHECK(IsActiveTransaction()); 1858 preinitialization_transaction_->RecordStrongStringRemoval(s); 1859} 1860 1861void Runtime::RecordWeakStringRemoval(mirror::String* s) const { 1862 DCHECK(IsAotCompiler()); 1863 DCHECK(IsActiveTransaction()); 1864 preinitialization_transaction_->RecordWeakStringRemoval(s); 1865} 1866 1867void Runtime::SetFaultMessage(const std::string& message) { 1868 MutexLock mu(Thread::Current(), fault_message_lock_); 1869 fault_message_ = message; 1870} 1871 1872void Runtime::AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* argv) 1873 const { 1874 if (GetInstrumentation()->InterpretOnly() || UseJit()) { 1875 argv->push_back("--compiler-filter=interpret-only"); 1876 } 1877 1878 // Make the dex2oat instruction set match that of the launching runtime. If we have multiple 1879 // architecture support, dex2oat may be compiled as a different instruction-set than that 1880 // currently being executed. 1881 std::string instruction_set("--instruction-set="); 1882 instruction_set += GetInstructionSetString(kRuntimeISA); 1883 argv->push_back(instruction_set); 1884 1885 std::unique_ptr<const InstructionSetFeatures> features(InstructionSetFeatures::FromCppDefines()); 1886 std::string feature_string("--instruction-set-features="); 1887 feature_string += features->GetFeatureString(); 1888 argv->push_back(feature_string); 1889} 1890 1891void Runtime::CreateJit() { 1892 CHECK(!IsAotCompiler()); 1893 if (GetInstrumentation()->IsForcedInterpretOnly()) { 1894 // Don't create JIT if forced interpret only. 1895 return; 1896 } 1897 std::string error_msg; 1898 jit_.reset(jit::Jit::Create(jit_options_.get(), &error_msg)); 1899 if (jit_.get() != nullptr) { 1900 jit_->CreateInstrumentationCache(jit_options_->GetCompileThreshold(), 1901 jit_options_->GetWarmupThreshold(), 1902 jit_options_->GetOsrThreshold()); 1903 jit_->CreateThreadPool(); 1904 1905 // Notify native debugger about the classes already loaded before the creation of the jit. 1906 jit_->DumpTypeInfoForLoadedTypes(GetClassLinker()); 1907 } else { 1908 LOG(WARNING) << "Failed to create JIT " << error_msg; 1909 } 1910} 1911 1912bool Runtime::CanRelocate() const { 1913 return !IsAotCompiler() || compiler_callbacks_->IsRelocationPossible(); 1914} 1915 1916bool Runtime::IsCompilingBootImage() const { 1917 return IsCompiler() && compiler_callbacks_->IsBootImage(); 1918} 1919 1920void Runtime::SetResolutionMethod(ArtMethod* method) { 1921 CHECK(method != nullptr); 1922 CHECK(method->IsRuntimeMethod()) << method; 1923 resolution_method_ = method; 1924} 1925 1926void Runtime::SetImtUnimplementedMethod(ArtMethod* method) { 1927 CHECK(method != nullptr); 1928 CHECK(method->IsRuntimeMethod()); 1929 imt_unimplemented_method_ = method; 1930} 1931 1932bool Runtime::IsVerificationEnabled() const { 1933 return verify_ == verifier::VerifyMode::kEnable || 1934 verify_ == verifier::VerifyMode::kSoftFail; 1935} 1936 1937bool Runtime::IsVerificationSoftFail() const { 1938 return verify_ == verifier::VerifyMode::kSoftFail; 1939} 1940 1941LinearAlloc* Runtime::CreateLinearAlloc() { 1942 // For 64 bit compilers, it needs to be in low 4GB in the case where we are cross compiling for a 1943 // 32 bit target. In this case, we have 32 bit pointers in the dex cache arrays which can't hold 1944 // when we have 64 bit ArtMethod pointers. 1945 return (IsAotCompiler() && Is64BitInstructionSet(kRuntimeISA)) 1946 ? new LinearAlloc(low_4gb_arena_pool_.get()) 1947 : new LinearAlloc(arena_pool_.get()); 1948} 1949 1950double Runtime::GetHashTableMinLoadFactor() const { 1951 return is_low_memory_mode_ ? kLowMemoryMinLoadFactor : kNormalMinLoadFactor; 1952} 1953 1954double Runtime::GetHashTableMaxLoadFactor() const { 1955 return is_low_memory_mode_ ? kLowMemoryMaxLoadFactor : kNormalMaxLoadFactor; 1956} 1957 1958} // namespace art 1959