runtime.cc revision 9bdf108885a27ba05fae8501725649574d7c491b
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#define ATRACE_TAG ATRACE_TAG_DALVIK 27#include <cutils/trace.h> 28#include <signal.h> 29#include <sys/syscall.h> 30#include "base/memory_tool.h" 31 32#include <cstdio> 33#include <cstdlib> 34#include <limits> 35#include <memory_representation.h> 36#include <vector> 37#include <fcntl.h> 38 39#include "JniConstants.h" 40#include "ScopedLocalRef.h" 41#include "arch/arm/quick_method_frame_info_arm.h" 42#include "arch/arm/registers_arm.h" 43#include "arch/arm64/quick_method_frame_info_arm64.h" 44#include "arch/arm64/registers_arm64.h" 45#include "arch/instruction_set_features.h" 46#include "arch/mips/quick_method_frame_info_mips.h" 47#include "arch/mips/registers_mips.h" 48#include "arch/mips64/quick_method_frame_info_mips64.h" 49#include "arch/mips64/registers_mips64.h" 50#include "arch/x86/quick_method_frame_info_x86.h" 51#include "arch/x86/registers_x86.h" 52#include "arch/x86_64/quick_method_frame_info_x86_64.h" 53#include "arch/x86_64/registers_x86_64.h" 54#include "art_field-inl.h" 55#include "art_method-inl.h" 56#include "asm_support.h" 57#include "atomic.h" 58#include "base/arena_allocator.h" 59#include "base/dumpable.h" 60#include "base/stl_util.h" 61#include "base/unix_file/fd_file.h" 62#include "class_linker-inl.h" 63#include "compiler_callbacks.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.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_Runtime.h" 99#include "native/java_lang_String.h" 100#include "native/java_lang_StringFactory.h" 101#include "native/java_lang_System.h" 102#include "native/java_lang_Thread.h" 103#include "native/java_lang_Throwable.h" 104#include "native/java_lang_VMClassLoader.h" 105#include "native/java_lang_ref_FinalizerReference.h" 106#include "native/java_lang_ref_Reference.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 "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 CheckAsmSupportOffsetsAndSizes(); 213 std::fill(callee_save_methods_, callee_save_methods_ + arraysize(callee_save_methods_), 0u); 214 interpreter::CheckInterpreterAsmConstants(); 215} 216 217Runtime::~Runtime() { 218 ATRACE_BEGIN("Runtime shutdown"); 219 if (is_native_bridge_loaded_) { 220 UnloadNativeBridge(); 221 } 222 223 if (dump_gc_performance_on_shutdown_) { 224 // This can't be called from the Heap destructor below because it 225 // could call RosAlloc::InspectAll() which needs the thread_list 226 // to be still alive. 227 heap_->DumpGcPerformanceInfo(LOG(INFO)); 228 } 229 230 Thread* self = Thread::Current(); 231 const bool attach_shutdown_thread = self == nullptr; 232 if (attach_shutdown_thread) { 233 ATRACE_BEGIN("Attach shutdown thread"); 234 CHECK(AttachCurrentThread("Shutdown thread", false, nullptr, false)); 235 ATRACE_END(); 236 self = Thread::Current(); 237 } else { 238 LOG(WARNING) << "Current thread not detached in Runtime shutdown"; 239 } 240 241 { 242 ATRACE_BEGIN("Wait for shutdown cond"); 243 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 244 shutting_down_started_ = true; 245 while (threads_being_born_ > 0) { 246 shutdown_cond_->Wait(self); 247 } 248 shutting_down_ = true; 249 ATRACE_END(); 250 } 251 // Shutdown and wait for the daemons. 252 CHECK(self != nullptr); 253 if (IsFinishedStarting()) { 254 ATRACE_BEGIN("Waiting for Daemons"); 255 self->ClearException(); 256 self->GetJniEnv()->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 257 WellKnownClasses::java_lang_Daemons_stop); 258 ATRACE_END(); 259 } 260 261 Trace::Shutdown(); 262 263 if (attach_shutdown_thread) { 264 ATRACE_BEGIN("Detach shutdown thread"); 265 DetachCurrentThread(); 266 ATRACE_END(); 267 self = nullptr; 268 } 269 270 // Make sure to let the GC complete if it is running. 271 heap_->WaitForGcToComplete(gc::kGcCauseBackground, self); 272 heap_->DeleteThreadPool(); 273 if (jit_ != nullptr) { 274 ATRACE_BEGIN("Delete jit"); 275 VLOG(jit) << "Deleting jit thread pool"; 276 // Delete thread pool before the thread list since we don't want to wait forever on the 277 // JIT compiler threads. 278 jit_->DeleteThreadPool(); 279 // Similarly, stop the profile saver thread before deleting the thread list. 280 jit_->StopProfileSaver(); 281 ATRACE_END(); 282 } 283 284 // Make sure our internal threads are dead before we start tearing down things they're using. 285 Dbg::StopJdwp(); 286 delete signal_catcher_; 287 288 // Make sure all other non-daemon threads have terminated, and all daemon threads are suspended. 289 ATRACE_BEGIN("Delete thread list"); 290 delete thread_list_; 291 ATRACE_END(); 292 293 // Delete the JIT after thread list to ensure that there is no remaining threads which could be 294 // accessing the instrumentation when we delete it. 295 if (jit_ != nullptr) { 296 VLOG(jit) << "Deleting jit"; 297 jit_.reset(nullptr); 298 } 299 300 // Shutdown the fault manager if it was initialized. 301 fault_manager.Shutdown(); 302 303 ATRACE_BEGIN("Delete state"); 304 delete monitor_list_; 305 delete monitor_pool_; 306 delete class_linker_; 307 delete heap_; 308 delete intern_table_; 309 delete java_vm_; 310 delete oat_file_manager_; 311 Thread::Shutdown(); 312 QuasiAtomic::Shutdown(); 313 verifier::MethodVerifier::Shutdown(); 314 315 // Destroy allocators before shutting down the MemMap because they may use it. 316 linear_alloc_.reset(); 317 low_4gb_arena_pool_.reset(); 318 arena_pool_.reset(); 319 MemMap::Shutdown(); 320 ATRACE_END(); 321 322 // TODO: acquire a static mutex on Runtime to avoid racing. 323 CHECK(instance_ == nullptr || instance_ == this); 324 instance_ = nullptr; 325 ATRACE_END(); 326} 327 328struct AbortState { 329 void Dump(std::ostream& os) const { 330 if (gAborting > 1) { 331 os << "Runtime aborting --- recursively, so no thread-specific detail!\n"; 332 return; 333 } 334 gAborting++; 335 os << "Runtime aborting...\n"; 336 if (Runtime::Current() == nullptr) { 337 os << "(Runtime does not yet exist!)\n"; 338 return; 339 } 340 Thread* self = Thread::Current(); 341 if (self == nullptr) { 342 os << "(Aborting thread was not attached to runtime!)\n"; 343 DumpKernelStack(os, GetTid(), " kernel: ", false); 344 DumpNativeStack(os, GetTid(), nullptr, " native: ", nullptr); 345 } else { 346 os << "Aborting thread:\n"; 347 if (Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)) { 348 DumpThread(os, self); 349 } else { 350 if (Locks::mutator_lock_->SharedTryLock(self)) { 351 DumpThread(os, self); 352 Locks::mutator_lock_->SharedUnlock(self); 353 } 354 } 355 } 356 DumpAllThreads(os, self); 357 } 358 359 // No thread-safety analysis as we do explicitly test for holding the mutator lock. 360 void DumpThread(std::ostream& os, Thread* self) const NO_THREAD_SAFETY_ANALYSIS { 361 DCHECK(Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)); 362 self->Dump(os); 363 if (self->IsExceptionPending()) { 364 mirror::Throwable* exception = self->GetException(); 365 os << "Pending exception " << exception->Dump(); 366 } 367 } 368 369 void DumpAllThreads(std::ostream& os, Thread* self) const { 370 Runtime* runtime = Runtime::Current(); 371 if (runtime != nullptr) { 372 ThreadList* thread_list = runtime->GetThreadList(); 373 if (thread_list != nullptr) { 374 bool tll_already_held = Locks::thread_list_lock_->IsExclusiveHeld(self); 375 bool ml_already_held = Locks::mutator_lock_->IsSharedHeld(self); 376 if (!tll_already_held || !ml_already_held) { 377 os << "Dumping all threads without appropriate locks held:" 378 << (!tll_already_held ? " thread list lock" : "") 379 << (!ml_already_held ? " mutator lock" : "") 380 << "\n"; 381 } 382 os << "All threads:\n"; 383 thread_list->Dump(os); 384 } 385 } 386 } 387}; 388 389void Runtime::Abort() { 390 gAborting++; // set before taking any locks 391 392 // Ensure that we don't have multiple threads trying to abort at once, 393 // which would result in significantly worse diagnostics. 394 MutexLock mu(Thread::Current(), *Locks::abort_lock_); 395 396 // Get any pending output out of the way. 397 fflush(nullptr); 398 399 // Many people have difficulty distinguish aborts from crashes, 400 // so be explicit. 401 AbortState state; 402 LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state); 403 404 // Call the abort hook if we have one. 405 if (Runtime::Current() != nullptr && Runtime::Current()->abort_ != nullptr) { 406 LOG(INTERNAL_FATAL) << "Calling abort hook..."; 407 Runtime::Current()->abort_(); 408 // notreached 409 LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!"; 410 } 411 412#if defined(__GLIBC__) 413 // TODO: we ought to be able to use pthread_kill(3) here (or abort(3), 414 // which POSIX defines in terms of raise(3), which POSIX defines in terms 415 // of pthread_kill(3)). On Linux, though, libcorkscrew can't unwind through 416 // libpthread, which means the stacks we dump would be useless. Calling 417 // tgkill(2) directly avoids that. 418 syscall(__NR_tgkill, getpid(), GetTid(), SIGABRT); 419 // TODO: LLVM installs it's own SIGABRT handler so exit to be safe... Can we disable that in LLVM? 420 // If not, we could use sigaction(3) before calling tgkill(2) and lose this call to exit(3). 421 exit(1); 422#else 423 abort(); 424#endif 425 // notreached 426} 427 428void Runtime::PreZygoteFork() { 429 heap_->PreZygoteFork(); 430} 431 432void Runtime::CallExitHook(jint status) { 433 if (exit_ != nullptr) { 434 ScopedThreadStateChange tsc(Thread::Current(), kNative); 435 exit_(status); 436 LOG(WARNING) << "Exit hook returned instead of exiting!"; 437 } 438} 439 440void Runtime::SweepSystemWeaks(IsMarkedVisitor* visitor) { 441 GetInternTable()->SweepInternTableWeaks(visitor); 442 GetMonitorList()->SweepMonitorList(visitor); 443 GetJavaVM()->SweepJniWeakGlobals(visitor); 444 GetHeap()->SweepAllocationRecords(visitor); 445 GetLambdaBoxTable()->SweepWeakBoxedLambdas(visitor); 446} 447 448bool Runtime::ParseOptions(const RuntimeOptions& raw_options, 449 bool ignore_unrecognized, 450 RuntimeArgumentMap* runtime_options) { 451 InitLogging(/* argv */ nullptr); // Calls Locks::Init() as a side effect. 452 bool parsed = ParsedOptions::Parse(raw_options, ignore_unrecognized, runtime_options); 453 if (!parsed) { 454 LOG(ERROR) << "Failed to parse options"; 455 return false; 456 } 457 return true; 458} 459 460bool Runtime::Create(RuntimeArgumentMap&& runtime_options) { 461 // TODO: acquire a static mutex on Runtime to avoid racing. 462 if (Runtime::instance_ != nullptr) { 463 return false; 464 } 465 instance_ = new Runtime; 466 if (!instance_->Init(std::move(runtime_options))) { 467 // TODO: Currently deleting the instance will abort the runtime on destruction. Now This will 468 // leak memory, instead. Fix the destructor. b/19100793. 469 // delete instance_; 470 instance_ = nullptr; 471 return false; 472 } 473 return true; 474} 475 476bool Runtime::Create(const RuntimeOptions& raw_options, bool ignore_unrecognized) { 477 RuntimeArgumentMap runtime_options; 478 return ParseOptions(raw_options, ignore_unrecognized, &runtime_options) && 479 Create(std::move(runtime_options)); 480} 481 482static jobject CreateSystemClassLoader(Runtime* runtime) { 483 if (runtime->IsAotCompiler() && !runtime->GetCompilerCallbacks()->IsBootImage()) { 484 return nullptr; 485 } 486 487 ScopedObjectAccess soa(Thread::Current()); 488 ClassLinker* cl = Runtime::Current()->GetClassLinker(); 489 auto pointer_size = cl->GetImagePointerSize(); 490 491 StackHandleScope<2> hs(soa.Self()); 492 Handle<mirror::Class> class_loader_class( 493 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader))); 494 CHECK(cl->EnsureInitialized(soa.Self(), class_loader_class, true, true)); 495 496 ArtMethod* getSystemClassLoader = class_loader_class->FindDirectMethod( 497 "getSystemClassLoader", "()Ljava/lang/ClassLoader;", pointer_size); 498 CHECK(getSystemClassLoader != nullptr); 499 500 JValue result = InvokeWithJValues(soa, nullptr, soa.EncodeMethod(getSystemClassLoader), nullptr); 501 JNIEnv* env = soa.Self()->GetJniEnv(); 502 ScopedLocalRef<jobject> system_class_loader(env, soa.AddLocalReference<jobject>(result.GetL())); 503 CHECK(system_class_loader.get() != nullptr); 504 505 soa.Self()->SetClassLoaderOverride(system_class_loader.get()); 506 507 Handle<mirror::Class> thread_class( 508 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread))); 509 CHECK(cl->EnsureInitialized(soa.Self(), thread_class, true, true)); 510 511 ArtField* contextClassLoader = 512 thread_class->FindDeclaredInstanceField("contextClassLoader", "Ljava/lang/ClassLoader;"); 513 CHECK(contextClassLoader != nullptr); 514 515 // We can't run in a transaction yet. 516 contextClassLoader->SetObject<false>(soa.Self()->GetPeer(), 517 soa.Decode<mirror::ClassLoader*>(system_class_loader.get())); 518 519 return env->NewGlobalRef(system_class_loader.get()); 520} 521 522std::string Runtime::GetPatchoatExecutable() const { 523 if (!patchoat_executable_.empty()) { 524 return patchoat_executable_; 525 } 526 std::string patchoat_executable(GetAndroidRoot()); 527 patchoat_executable += (kIsDebugBuild ? "/bin/patchoatd" : "/bin/patchoat"); 528 return patchoat_executable; 529} 530 531std::string Runtime::GetCompilerExecutable() const { 532 if (!compiler_executable_.empty()) { 533 return compiler_executable_; 534 } 535 std::string compiler_executable(GetAndroidRoot()); 536 compiler_executable += (kIsDebugBuild ? "/bin/dex2oatd" : "/bin/dex2oat"); 537 return compiler_executable; 538} 539 540bool Runtime::Start() { 541 VLOG(startup) << "Runtime::Start entering"; 542 543 CHECK(!no_sig_chain_) << "A started runtime should have sig chain enabled"; 544 545 // If a debug host build, disable ptrace restriction for debugging and test timeout thread dump. 546 // Only 64-bit as prctl() may fail in 32 bit userspace on a 64-bit kernel. 547#if defined(__linux__) && !defined(__ANDROID__) && defined(__x86_64__) 548 if (kIsDebugBuild) { 549 CHECK_EQ(prctl(PR_SET_PTRACER, PR_SET_PTRACER_ANY), 0); 550 } 551#endif 552 553 // Restore main thread state to kNative as expected by native code. 554 Thread* self = Thread::Current(); 555 556 self->TransitionFromRunnableToSuspended(kNative); 557 558 started_ = true; 559 560 // Use !IsAotCompiler so that we get test coverage, tests are never the zygote. 561 if (!IsAotCompiler()) { 562 ScopedObjectAccess soa(self); 563 ATRACE_BEGIN("AddImageStringsToTable"); 564 GetInternTable()->AddImagesStringsToTable(heap_->GetBootImageSpaces()); 565 ATRACE_END(); 566 ATRACE_BEGIN("MoveImageClassesToClassTable"); 567 GetClassLinker()->AddBootImageClassesToClassTable(); 568 ATRACE_END(); 569 } 570 571 // If we are the zygote then we need to wait until after forking to create the code cache 572 // due to SELinux restrictions on r/w/x memory regions. 573 if (!IsZygote() && jit_options_->UseJIT()) { 574 CreateJit(); 575 } 576 577 if (!IsImageDex2OatEnabled() || !GetHeap()->HasBootImageSpace()) { 578 ScopedObjectAccess soa(self); 579 StackHandleScope<1> hs(soa.Self()); 580 auto klass(hs.NewHandle<mirror::Class>(mirror::Class::GetJavaLangClass())); 581 class_linker_->EnsureInitialized(soa.Self(), klass, true, true); 582 } 583 584 // InitNativeMethods needs to be after started_ so that the classes 585 // it touches will have methods linked to the oat file if necessary. 586 ATRACE_BEGIN("InitNativeMethods"); 587 InitNativeMethods(); 588 ATRACE_END(); 589 590 // Initialize well known thread group values that may be accessed threads while attaching. 591 InitThreadGroups(self); 592 593 Thread::FinishStartup(); 594 595 system_class_loader_ = CreateSystemClassLoader(this); 596 597 if (is_zygote_) { 598 if (!InitZygote()) { 599 return false; 600 } 601 } else { 602 if (is_native_bridge_loaded_) { 603 PreInitializeNativeBridge("."); 604 } 605 InitNonZygoteOrPostFork(self->GetJniEnv(), 606 /* is_system_server */ false, 607 NativeBridgeAction::kInitialize, 608 GetInstructionSetString(kRuntimeISA)); 609 } 610 611 ATRACE_BEGIN("StartDaemonThreads"); 612 StartDaemonThreads(); 613 ATRACE_END(); 614 615 { 616 ScopedObjectAccess soa(self); 617 self->GetJniEnv()->locals.AssertEmpty(); 618 } 619 620 VLOG(startup) << "Runtime::Start exiting"; 621 finished_starting_ = true; 622 623 if (profiler_options_.IsEnabled() && !profile_output_filename_.empty()) { 624 // User has asked for a profile using -Xenable-profiler. 625 // Create the profile file if it doesn't exist. 626 int fd = open(profile_output_filename_.c_str(), O_RDWR|O_CREAT|O_EXCL, 0660); 627 if (fd >= 0) { 628 close(fd); 629 } else if (errno != EEXIST) { 630 LOG(WARNING) << "Failed to access the profile file. Profiler disabled."; 631 } 632 } 633 634 if (trace_config_.get() != nullptr && trace_config_->trace_file != "") { 635 ScopedThreadStateChange tsc(self, kWaitingForMethodTracingStart); 636 Trace::Start(trace_config_->trace_file.c_str(), 637 -1, 638 static_cast<int>(trace_config_->trace_file_size), 639 0, 640 trace_config_->trace_output_mode, 641 trace_config_->trace_mode, 642 0); 643 } 644 645 return true; 646} 647 648void Runtime::EndThreadBirth() REQUIRES(Locks::runtime_shutdown_lock_) { 649 DCHECK_GT(threads_being_born_, 0U); 650 threads_being_born_--; 651 if (shutting_down_started_ && threads_being_born_ == 0) { 652 shutdown_cond_->Broadcast(Thread::Current()); 653 } 654} 655 656// Do zygote-mode-only initialization. 657bool Runtime::InitZygote() { 658#ifdef __linux__ 659 // zygote goes into its own process group 660 setpgid(0, 0); 661 662 // See storage config details at http://source.android.com/tech/storage/ 663 // Create private mount namespace shared by all children 664 if (unshare(CLONE_NEWNS) == -1) { 665 PLOG(ERROR) << "Failed to unshare()"; 666 return false; 667 } 668 669 // Mark rootfs as being a slave so that changes from default 670 // namespace only flow into our children. 671 if (mount("rootfs", "/", nullptr, (MS_SLAVE | MS_REC), nullptr) == -1) { 672 PLOG(ERROR) << "Failed to mount() rootfs as MS_SLAVE"; 673 return false; 674 } 675 676 // Create a staging tmpfs that is shared by our children; they will 677 // bind mount storage into their respective private namespaces, which 678 // are isolated from each other. 679 const char* target_base = getenv("EMULATED_STORAGE_TARGET"); 680 if (target_base != nullptr) { 681 if (mount("tmpfs", target_base, "tmpfs", MS_NOSUID | MS_NODEV, 682 "uid=0,gid=1028,mode=0751") == -1) { 683 PLOG(ERROR) << "Failed to mount tmpfs to " << target_base; 684 return false; 685 } 686 } 687 688 return true; 689#else 690 UNIMPLEMENTED(FATAL); 691 return false; 692#endif 693} 694 695void Runtime::InitNonZygoteOrPostFork( 696 JNIEnv* env, bool is_system_server, NativeBridgeAction action, const char* isa) { 697 is_zygote_ = false; 698 699 if (is_native_bridge_loaded_) { 700 switch (action) { 701 case NativeBridgeAction::kUnload: 702 UnloadNativeBridge(); 703 is_native_bridge_loaded_ = false; 704 break; 705 706 case NativeBridgeAction::kInitialize: 707 InitializeNativeBridge(env, isa); 708 break; 709 } 710 } 711 712 // Create the thread pools. 713 heap_->CreateThreadPool(); 714 // Reset the gc performance data at zygote fork so that the GCs 715 // before fork aren't attributed to an app. 716 heap_->ResetGcPerformanceInfo(); 717 718 if (!is_system_server && !safe_mode_ && jit_options_->UseJIT() && jit_.get() == nullptr) { 719 // Note that when running ART standalone (not zygote, nor zygote fork), 720 // the jit may have already been created. 721 CreateJit(); 722 } 723 724 StartSignalCatcher(); 725 726 // Start the JDWP thread. If the command-line debugger flags specified "suspend=y", 727 // this will pause the runtime, so we probably want this to come last. 728 Dbg::StartJdwp(); 729} 730 731void Runtime::StartSignalCatcher() { 732 if (!is_zygote_) { 733 signal_catcher_ = new SignalCatcher(stack_trace_file_); 734 } 735} 736 737bool Runtime::IsShuttingDown(Thread* self) { 738 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 739 return IsShuttingDownLocked(); 740} 741 742bool Runtime::IsDebuggable() const { 743 const OatFile* oat_file = GetOatFileManager().GetPrimaryOatFile(); 744 return oat_file != nullptr && oat_file->IsDebuggable(); 745} 746 747void Runtime::StartDaemonThreads() { 748 VLOG(startup) << "Runtime::StartDaemonThreads entering"; 749 750 Thread* self = Thread::Current(); 751 752 // Must be in the kNative state for calling native methods. 753 CHECK_EQ(self->GetState(), kNative); 754 755 JNIEnv* env = self->GetJniEnv(); 756 env->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 757 WellKnownClasses::java_lang_Daemons_start); 758 if (env->ExceptionCheck()) { 759 env->ExceptionDescribe(); 760 LOG(FATAL) << "Error starting java.lang.Daemons"; 761 } 762 763 VLOG(startup) << "Runtime::StartDaemonThreads exiting"; 764} 765 766// Attempts to open dex files from image(s). Given the image location, try to find the oat file 767// and open it to get the stored dex file. If the image is the first for a multi-image boot 768// classpath, go on and also open the other images. 769static bool OpenDexFilesFromImage(const std::string& image_location, 770 std::vector<std::unique_ptr<const DexFile>>* dex_files, 771 size_t* failures) { 772 DCHECK(dex_files != nullptr) << "OpenDexFilesFromImage: out-param is nullptr"; 773 774 // Use a work-list approach, so that we can easily reuse the opening code. 775 std::vector<std::string> image_locations; 776 image_locations.push_back(image_location); 777 778 for (size_t index = 0; index < image_locations.size(); ++index) { 779 std::string system_filename; 780 bool has_system = false; 781 std::string cache_filename_unused; 782 bool dalvik_cache_exists_unused; 783 bool has_cache_unused; 784 bool is_global_cache_unused; 785 bool found_image = gc::space::ImageSpace::FindImageFilename(image_locations[index].c_str(), 786 kRuntimeISA, 787 &system_filename, 788 &has_system, 789 &cache_filename_unused, 790 &dalvik_cache_exists_unused, 791 &has_cache_unused, 792 &is_global_cache_unused); 793 794 if (!found_image || !has_system) { 795 return false; 796 } 797 798 // We are falling back to non-executable use of the oat file because patching failed, presumably 799 // due to lack of space. 800 std::string oat_filename = 801 ImageHeader::GetOatLocationFromImageLocation(system_filename.c_str()); 802 std::string oat_location = 803 ImageHeader::GetOatLocationFromImageLocation(image_locations[index].c_str()); 804 // Note: in the multi-image case, the image location may end in ".jar," and not ".art." Handle 805 // that here. 806 if (EndsWith(oat_location, ".jar")) { 807 oat_location.replace(oat_location.length() - 3, 3, "oat"); 808 } 809 810 std::unique_ptr<File> file(OS::OpenFileForReading(oat_filename.c_str())); 811 if (file.get() == nullptr) { 812 return false; 813 } 814 std::string error_msg; 815 std::unique_ptr<ElfFile> elf_file(ElfFile::Open(file.release(), false, false, &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 ATRACE_BEGIN("Runtime::Init"); 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); 917 918 vfprintf_ = runtime_options.GetOrDefault(Opt::HookVfprintf); 919 exit_ = runtime_options.GetOrDefault(Opt::HookExit); 920 abort_ = runtime_options.GetOrDefault(Opt::HookAbort); 921 922 default_stack_size_ = runtime_options.GetOrDefault(Opt::StackSize); 923 stack_trace_file_ = runtime_options.ReleaseOrDefault(Opt::StackTraceFile); 924 925 compiler_executable_ = runtime_options.ReleaseOrDefault(Opt::Compiler); 926 compiler_options_ = runtime_options.ReleaseOrDefault(Opt::CompilerOptions); 927 image_compiler_options_ = runtime_options.ReleaseOrDefault(Opt::ImageCompilerOptions); 928 image_location_ = runtime_options.GetOrDefault(Opt::Image); 929 930 max_spins_before_thin_lock_inflation_ = 931 runtime_options.GetOrDefault(Opt::MaxSpinsBeforeThinLockInflation); 932 933 monitor_list_ = new MonitorList; 934 monitor_pool_ = MonitorPool::Create(); 935 thread_list_ = new ThreadList; 936 intern_table_ = new InternTable; 937 938 verify_ = runtime_options.GetOrDefault(Opt::Verify); 939 allow_dex_file_fallback_ = !runtime_options.Exists(Opt::NoDexFileFallback); 940 941 no_sig_chain_ = runtime_options.Exists(Opt::NoSigChain); 942 943 Split(runtime_options.GetOrDefault(Opt::CpuAbiList), ',', &cpu_abilist_); 944 945 fingerprint_ = runtime_options.ReleaseOrDefault(Opt::Fingerprint); 946 947 if (runtime_options.GetOrDefault(Opt::Interpret)) { 948 GetInstrumentation()->ForceInterpretOnly(); 949 } 950 951 zygote_max_failed_boots_ = runtime_options.GetOrDefault(Opt::ZygoteMaxFailedBoots); 952 experimental_flags_ = runtime_options.GetOrDefault(Opt::Experimental); 953 is_low_memory_mode_ = runtime_options.Exists(Opt::LowMemoryMode); 954 955 XGcOption xgc_option = runtime_options.GetOrDefault(Opt::GcOption); 956 ATRACE_BEGIN("CreateHeap"); 957 heap_ = new gc::Heap(runtime_options.GetOrDefault(Opt::MemoryInitialSize), 958 runtime_options.GetOrDefault(Opt::HeapGrowthLimit), 959 runtime_options.GetOrDefault(Opt::HeapMinFree), 960 runtime_options.GetOrDefault(Opt::HeapMaxFree), 961 runtime_options.GetOrDefault(Opt::HeapTargetUtilization), 962 runtime_options.GetOrDefault(Opt::ForegroundHeapGrowthMultiplier), 963 runtime_options.GetOrDefault(Opt::MemoryMaximumSize), 964 runtime_options.GetOrDefault(Opt::NonMovingSpaceCapacity), 965 runtime_options.GetOrDefault(Opt::Image), 966 runtime_options.GetOrDefault(Opt::ImageInstructionSet), 967 xgc_option.collector_type_, 968 runtime_options.GetOrDefault(Opt::BackgroundGc), 969 runtime_options.GetOrDefault(Opt::LargeObjectSpace), 970 runtime_options.GetOrDefault(Opt::LargeObjectThreshold), 971 runtime_options.GetOrDefault(Opt::ParallelGCThreads), 972 runtime_options.GetOrDefault(Opt::ConcGCThreads), 973 runtime_options.Exists(Opt::LowMemoryMode), 974 runtime_options.GetOrDefault(Opt::LongPauseLogThreshold), 975 runtime_options.GetOrDefault(Opt::LongGCLogThreshold), 976 runtime_options.Exists(Opt::IgnoreMaxFootprint), 977 runtime_options.GetOrDefault(Opt::UseTLAB), 978 xgc_option.verify_pre_gc_heap_, 979 xgc_option.verify_pre_sweeping_heap_, 980 xgc_option.verify_post_gc_heap_, 981 xgc_option.verify_pre_gc_rosalloc_, 982 xgc_option.verify_pre_sweeping_rosalloc_, 983 xgc_option.verify_post_gc_rosalloc_, 984 xgc_option.gcstress_, 985 runtime_options.GetOrDefault(Opt::EnableHSpaceCompactForOOM), 986 runtime_options.GetOrDefault(Opt::HSpaceCompactForOOMMinIntervalsMs)); 987 ATRACE_END(); 988 989 if (!heap_->HasBootImageSpace() && !allow_dex_file_fallback_) { 990 LOG(ERROR) << "Dex file fallback disabled, cannot continue without image."; 991 ATRACE_END(); 992 return false; 993 } 994 995 dump_gc_performance_on_shutdown_ = runtime_options.Exists(Opt::DumpGCPerformanceOnShutdown); 996 997 if (runtime_options.Exists(Opt::JdwpOptions)) { 998 Dbg::ConfigureJdwp(runtime_options.GetOrDefault(Opt::JdwpOptions)); 999 } 1000 1001 jit_options_.reset(jit::JitOptions::CreateFromRuntimeArguments(runtime_options)); 1002 if (IsAotCompiler()) { 1003 // If we are already the compiler at this point, we must be dex2oat. Don't create the jit in 1004 // this case. 1005 // If runtime_options doesn't have UseJIT set to true then CreateFromRuntimeArguments returns 1006 // null and we don't create the jit. 1007 jit_options_->SetUseJIT(false); 1008 } 1009 1010 // Allocate a global table of boxed lambda objects <-> closures. 1011 lambda_box_table_ = MakeUnique<lambda::BoxTable>(); 1012 1013 // Use MemMap arena pool for jit, malloc otherwise. Malloc arenas are faster to allocate but 1014 // can't be trimmed as easily. 1015 const bool use_malloc = IsAotCompiler(); 1016 arena_pool_.reset(new ArenaPool(use_malloc, false)); 1017 if (IsAotCompiler() && Is64BitInstructionSet(kRuntimeISA)) { 1018 // 4gb, no malloc. Explanation in header. 1019 low_4gb_arena_pool_.reset(new ArenaPool(false, true)); 1020 } 1021 linear_alloc_.reset(CreateLinearAlloc()); 1022 1023 BlockSignals(); 1024 InitPlatformSignalHandlers(); 1025 1026 // Change the implicit checks flags based on runtime architecture. 1027 switch (kRuntimeISA) { 1028 case kArm: 1029 case kThumb2: 1030 case kX86: 1031 case kArm64: 1032 case kX86_64: 1033 case kMips: 1034 case kMips64: 1035 implicit_null_checks_ = true; 1036 // Installing stack protection does not play well with valgrind. 1037 implicit_so_checks_ = !(RUNNING_ON_MEMORY_TOOL && kMemoryToolIsValgrind); 1038 break; 1039 default: 1040 // Keep the defaults. 1041 break; 1042 } 1043 1044 if (!no_sig_chain_) { 1045 // Dex2Oat's Runtime does not need the signal chain or the fault handler. 1046 1047 // Initialize the signal chain so that any calls to sigaction get 1048 // correctly routed to the next in the chain regardless of whether we 1049 // have claimed the signal or not. 1050 InitializeSignalChain(); 1051 1052 if (implicit_null_checks_ || implicit_so_checks_ || implicit_suspend_checks_) { 1053 fault_manager.Init(); 1054 1055 // These need to be in a specific order. The null point check handler must be 1056 // after the suspend check and stack overflow check handlers. 1057 // 1058 // Note: the instances attach themselves to the fault manager and are handled by it. The manager 1059 // will delete the instance on Shutdown(). 1060 if (implicit_suspend_checks_) { 1061 new SuspensionHandler(&fault_manager); 1062 } 1063 1064 if (implicit_so_checks_) { 1065 new StackOverflowHandler(&fault_manager); 1066 } 1067 1068 if (implicit_null_checks_) { 1069 new NullPointerHandler(&fault_manager); 1070 } 1071 1072 if (kEnableJavaStackTraceHandler) { 1073 new JavaStackTraceHandler(&fault_manager); 1074 } 1075 } 1076 } 1077 1078 java_vm_ = new JavaVMExt(this, runtime_options); 1079 1080 Thread::Startup(); 1081 1082 // ClassLinker needs an attached thread, but we can't fully attach a thread without creating 1083 // objects. We can't supply a thread group yet; it will be fixed later. Since we are the main 1084 // thread, we do not get a java peer. 1085 Thread* self = Thread::Attach("main", false, nullptr, false); 1086 CHECK_EQ(self->GetThreadId(), ThreadList::kMainThreadId); 1087 CHECK(self != nullptr); 1088 1089 // Set us to runnable so tools using a runtime can allocate and GC by default 1090 self->TransitionFromSuspendedToRunnable(); 1091 1092 // Now we're attached, we can take the heap locks and validate the heap. 1093 GetHeap()->EnableObjectValidation(); 1094 1095 CHECK_GE(GetHeap()->GetContinuousSpaces().size(), 1U); 1096 class_linker_ = new ClassLinker(intern_table_); 1097 if (GetHeap()->HasBootImageSpace()) { 1098 ATRACE_BEGIN("InitFromImage"); 1099 std::string error_msg; 1100 bool result = class_linker_->InitFromImage(&error_msg); 1101 ATRACE_END(); 1102 if (!result) { 1103 LOG(ERROR) << "Could not initialize from image: " << error_msg; 1104 return false; 1105 } 1106 if (kIsDebugBuild) { 1107 for (auto image_space : GetHeap()->GetBootImageSpaces()) { 1108 image_space->VerifyImageAllocations(); 1109 } 1110 } 1111 if (boot_class_path_string_.empty()) { 1112 // The bootclasspath is not explicitly specified: construct it from the loaded dex files. 1113 const std::vector<const DexFile*>& boot_class_path = GetClassLinker()->GetBootClassPath(); 1114 std::vector<std::string> dex_locations; 1115 dex_locations.reserve(boot_class_path.size()); 1116 for (const DexFile* dex_file : boot_class_path) { 1117 dex_locations.push_back(dex_file->GetLocation()); 1118 } 1119 boot_class_path_string_ = Join(dex_locations, ':'); 1120 } 1121 } else { 1122 std::vector<std::string> dex_filenames; 1123 Split(boot_class_path_string_, ':', &dex_filenames); 1124 1125 std::vector<std::string> dex_locations; 1126 if (!runtime_options.Exists(Opt::BootClassPathLocations)) { 1127 dex_locations = dex_filenames; 1128 } else { 1129 dex_locations = runtime_options.GetOrDefault(Opt::BootClassPathLocations); 1130 CHECK_EQ(dex_filenames.size(), dex_locations.size()); 1131 } 1132 1133 std::vector<std::unique_ptr<const DexFile>> boot_class_path; 1134 if (runtime_options.Exists(Opt::BootClassPathDexList)) { 1135 boot_class_path.swap(*runtime_options.GetOrDefault(Opt::BootClassPathDexList)); 1136 } else { 1137 OpenDexFiles(dex_filenames, 1138 dex_locations, 1139 runtime_options.GetOrDefault(Opt::Image), 1140 &boot_class_path); 1141 } 1142 instruction_set_ = runtime_options.GetOrDefault(Opt::ImageInstructionSet); 1143 std::string error_msg; 1144 if (!class_linker_->InitWithoutImage(std::move(boot_class_path), &error_msg)) { 1145 LOG(ERROR) << "Could not initialize without image: " << error_msg; 1146 return false; 1147 } 1148 1149 // TODO: Should we move the following to InitWithoutImage? 1150 SetInstructionSet(instruction_set_); 1151 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 1152 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 1153 if (!HasCalleeSaveMethod(type)) { 1154 SetCalleeSaveMethod(CreateCalleeSaveMethod(), type); 1155 } 1156 } 1157 } 1158 1159 CHECK(class_linker_ != nullptr); 1160 1161 verifier::MethodVerifier::Init(); 1162 1163 if (runtime_options.Exists(Opt::MethodTrace)) { 1164 trace_config_.reset(new TraceConfig()); 1165 trace_config_->trace_file = runtime_options.ReleaseOrDefault(Opt::MethodTraceFile); 1166 trace_config_->trace_file_size = runtime_options.ReleaseOrDefault(Opt::MethodTraceFileSize); 1167 trace_config_->trace_mode = Trace::TraceMode::kMethodTracing; 1168 trace_config_->trace_output_mode = runtime_options.Exists(Opt::MethodTraceStreaming) ? 1169 Trace::TraceOutputMode::kStreaming : 1170 Trace::TraceOutputMode::kFile; 1171 } 1172 1173 { 1174 auto&& profiler_options = runtime_options.ReleaseOrDefault(Opt::ProfilerOpts); 1175 profile_output_filename_ = profiler_options.output_file_name_; 1176 1177 // TODO: Don't do this, just change ProfilerOptions to include the output file name? 1178 ProfilerOptions other_options( 1179 profiler_options.enabled_, 1180 profiler_options.period_s_, 1181 profiler_options.duration_s_, 1182 profiler_options.interval_us_, 1183 profiler_options.backoff_coefficient_, 1184 profiler_options.start_immediately_, 1185 profiler_options.top_k_threshold_, 1186 profiler_options.top_k_change_threshold_, 1187 profiler_options.profile_type_, 1188 profiler_options.max_stack_depth_); 1189 1190 profiler_options_ = other_options; 1191 } 1192 1193 // TODO: move this to just be an Trace::Start argument 1194 Trace::SetDefaultClockSource(runtime_options.GetOrDefault(Opt::ProfileClock)); 1195 1196 // Pre-allocate an OutOfMemoryError for the double-OOME case. 1197 self->ThrowNewException("Ljava/lang/OutOfMemoryError;", 1198 "OutOfMemoryError thrown while trying to throw OutOfMemoryError; " 1199 "no stack trace available"); 1200 pre_allocated_OutOfMemoryError_ = GcRoot<mirror::Throwable>(self->GetException()); 1201 self->ClearException(); 1202 1203 // Pre-allocate a NoClassDefFoundError for the common case of failing to find a system class 1204 // ahead of checking the application's class loader. 1205 self->ThrowNewException("Ljava/lang/NoClassDefFoundError;", 1206 "Class not found using the boot class loader; no stack trace available"); 1207 pre_allocated_NoClassDefFoundError_ = GcRoot<mirror::Throwable>(self->GetException()); 1208 self->ClearException(); 1209 1210 // Look for a native bridge. 1211 // 1212 // The intended flow here is, in the case of a running system: 1213 // 1214 // Runtime::Init() (zygote): 1215 // LoadNativeBridge -> dlopen from cmd line parameter. 1216 // | 1217 // V 1218 // Runtime::Start() (zygote): 1219 // No-op wrt native bridge. 1220 // | 1221 // | start app 1222 // V 1223 // DidForkFromZygote(action) 1224 // action = kUnload -> dlclose native bridge. 1225 // action = kInitialize -> initialize library 1226 // 1227 // 1228 // The intended flow here is, in the case of a simple dalvikvm call: 1229 // 1230 // Runtime::Init(): 1231 // LoadNativeBridge -> dlopen from cmd line parameter. 1232 // | 1233 // V 1234 // Runtime::Start(): 1235 // DidForkFromZygote(kInitialize) -> try to initialize any native bridge given. 1236 // No-op wrt native bridge. 1237 { 1238 std::string native_bridge_file_name = runtime_options.ReleaseOrDefault(Opt::NativeBridge); 1239 is_native_bridge_loaded_ = LoadNativeBridge(native_bridge_file_name); 1240 } 1241 1242 VLOG(startup) << "Runtime::Init exiting"; 1243 1244 ATRACE_END(); 1245 1246 return true; 1247} 1248 1249void Runtime::InitNativeMethods() { 1250 VLOG(startup) << "Runtime::InitNativeMethods entering"; 1251 Thread* self = Thread::Current(); 1252 JNIEnv* env = self->GetJniEnv(); 1253 1254 // Must be in the kNative state for calling native methods (JNI_OnLoad code). 1255 CHECK_EQ(self->GetState(), kNative); 1256 1257 // First set up JniConstants, which is used by both the runtime's built-in native 1258 // methods and libcore. 1259 JniConstants::init(env); 1260 1261 // Then set up the native methods provided by the runtime itself. 1262 RegisterRuntimeNativeMethods(env); 1263 1264 // Initialize classes used in JNI. The initialization requires runtime native 1265 // methods to be loaded first. 1266 WellKnownClasses::Init(env); 1267 1268 // Then set up libjavacore / libopenjdk, which are just a regular JNI libraries with 1269 // a regular JNI_OnLoad. Most JNI libraries can just use System.loadLibrary, but 1270 // libcore can't because it's the library that implements System.loadLibrary! 1271 { 1272 std::string error_msg; 1273 if (!java_vm_->LoadNativeLibrary(env, "libjavacore.so", nullptr, 1274 /* is_shared_namespace */ false, 1275 nullptr, nullptr, &error_msg)) { 1276 LOG(FATAL) << "LoadNativeLibrary failed for \"libjavacore.so\": " << error_msg; 1277 } 1278 } 1279 { 1280 constexpr const char* kOpenJdkLibrary = kIsDebugBuild 1281 ? "libopenjdkd.so" 1282 : "libopenjdk.so"; 1283 std::string error_msg; 1284 if (!java_vm_->LoadNativeLibrary(env, kOpenJdkLibrary, nullptr, 1285 /* is_shared_namespace */ false, 1286 nullptr, nullptr, &error_msg)) { 1287 LOG(FATAL) << "LoadNativeLibrary failed for \"" << kOpenJdkLibrary << "\": " << error_msg; 1288 } 1289 } 1290 1291 // Initialize well known classes that may invoke runtime native methods. 1292 WellKnownClasses::LateInit(env); 1293 1294 VLOG(startup) << "Runtime::InitNativeMethods exiting"; 1295} 1296 1297void Runtime::InitThreadGroups(Thread* self) { 1298 JNIEnvExt* env = self->GetJniEnv(); 1299 ScopedJniEnvLocalRefState env_state(env); 1300 main_thread_group_ = 1301 env->NewGlobalRef(env->GetStaticObjectField( 1302 WellKnownClasses::java_lang_ThreadGroup, 1303 WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup)); 1304 CHECK(main_thread_group_ != nullptr || IsAotCompiler()); 1305 system_thread_group_ = 1306 env->NewGlobalRef(env->GetStaticObjectField( 1307 WellKnownClasses::java_lang_ThreadGroup, 1308 WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup)); 1309 CHECK(system_thread_group_ != nullptr || IsAotCompiler()); 1310} 1311 1312jobject Runtime::GetMainThreadGroup() const { 1313 CHECK(main_thread_group_ != nullptr || IsAotCompiler()); 1314 return main_thread_group_; 1315} 1316 1317jobject Runtime::GetSystemThreadGroup() const { 1318 CHECK(system_thread_group_ != nullptr || IsAotCompiler()); 1319 return system_thread_group_; 1320} 1321 1322jobject Runtime::GetSystemClassLoader() const { 1323 CHECK(system_class_loader_ != nullptr || IsAotCompiler()); 1324 return system_class_loader_; 1325} 1326 1327void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) { 1328 register_dalvik_system_DexFile(env); 1329 register_dalvik_system_VMDebug(env); 1330 register_dalvik_system_VMRuntime(env); 1331 register_dalvik_system_VMStack(env); 1332 register_dalvik_system_ZygoteHooks(env); 1333 register_java_lang_Class(env); 1334 register_java_lang_DexCache(env); 1335 register_java_lang_Object(env); 1336 register_java_lang_ref_FinalizerReference(env); 1337 register_java_lang_reflect_Array(env); 1338 register_java_lang_reflect_Constructor(env); 1339 register_java_lang_reflect_Field(env); 1340 register_java_lang_reflect_Method(env); 1341 register_java_lang_reflect_Proxy(env); 1342 register_java_lang_ref_Reference(env); 1343 register_java_lang_Runtime(env); 1344 register_java_lang_String(env); 1345 register_java_lang_StringFactory(env); 1346 register_java_lang_System(env); 1347 register_java_lang_Thread(env); 1348 register_java_lang_Throwable(env); 1349 register_java_lang_VMClassLoader(env); 1350 register_java_util_concurrent_atomic_AtomicLong(env); 1351 register_libcore_util_CharsetUtils(env); 1352 register_org_apache_harmony_dalvik_ddmc_DdmServer(env); 1353 register_org_apache_harmony_dalvik_ddmc_DdmVmInternal(env); 1354 register_sun_misc_Unsafe(env); 1355} 1356 1357void Runtime::DumpForSigQuit(std::ostream& os) { 1358 // Dumping for SIGQIT may cause deadlocks if the the debugger is active. b/26118154 1359 if (Dbg::IsDebuggerActive()) { 1360 LOG(INFO) << "Skipping DumpForSigQuit due to active debugger"; 1361 return; 1362 } 1363 GetClassLinker()->DumpForSigQuit(os); 1364 GetInternTable()->DumpForSigQuit(os); 1365 GetJavaVM()->DumpForSigQuit(os); 1366 GetHeap()->DumpForSigQuit(os); 1367 if (GetJit() != nullptr) { 1368 GetJit()->DumpForSigQuit(os); 1369 } else { 1370 os << "Running non JIT\n"; 1371 } 1372 TrackedAllocators::Dump(os); 1373 os << "\n"; 1374 1375 thread_list_->DumpForSigQuit(os); 1376 BaseMutex::DumpAll(os); 1377} 1378 1379void Runtime::DumpLockHolders(std::ostream& os) { 1380 uint64_t mutator_lock_owner = Locks::mutator_lock_->GetExclusiveOwnerTid(); 1381 pid_t thread_list_lock_owner = GetThreadList()->GetLockOwner(); 1382 pid_t classes_lock_owner = GetClassLinker()->GetClassesLockOwner(); 1383 pid_t dex_lock_owner = GetClassLinker()->GetDexLockOwner(); 1384 if ((thread_list_lock_owner | classes_lock_owner | dex_lock_owner) != 0) { 1385 os << "Mutator lock exclusive owner tid: " << mutator_lock_owner << "\n" 1386 << "ThreadList lock owner tid: " << thread_list_lock_owner << "\n" 1387 << "ClassLinker classes lock owner tid: " << classes_lock_owner << "\n" 1388 << "ClassLinker dex lock owner tid: " << dex_lock_owner << "\n"; 1389 } 1390} 1391 1392void Runtime::SetStatsEnabled(bool new_state) { 1393 Thread* self = Thread::Current(); 1394 MutexLock mu(self, *Locks::instrument_entrypoints_lock_); 1395 if (new_state == true) { 1396 GetStats()->Clear(~0); 1397 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1398 self->GetStats()->Clear(~0); 1399 if (stats_enabled_ != new_state) { 1400 GetInstrumentation()->InstrumentQuickAllocEntryPointsLocked(); 1401 } 1402 } else if (stats_enabled_ != new_state) { 1403 GetInstrumentation()->UninstrumentQuickAllocEntryPointsLocked(); 1404 } 1405 stats_enabled_ = new_state; 1406} 1407 1408void Runtime::ResetStats(int kinds) { 1409 GetStats()->Clear(kinds & 0xffff); 1410 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1411 Thread::Current()->GetStats()->Clear(kinds >> 16); 1412} 1413 1414int32_t Runtime::GetStat(int kind) { 1415 RuntimeStats* stats; 1416 if (kind < (1<<16)) { 1417 stats = GetStats(); 1418 } else { 1419 stats = Thread::Current()->GetStats(); 1420 kind >>= 16; 1421 } 1422 switch (kind) { 1423 case KIND_ALLOCATED_OBJECTS: 1424 return stats->allocated_objects; 1425 case KIND_ALLOCATED_BYTES: 1426 return stats->allocated_bytes; 1427 case KIND_FREED_OBJECTS: 1428 return stats->freed_objects; 1429 case KIND_FREED_BYTES: 1430 return stats->freed_bytes; 1431 case KIND_GC_INVOCATIONS: 1432 return stats->gc_for_alloc_count; 1433 case KIND_CLASS_INIT_COUNT: 1434 return stats->class_init_count; 1435 case KIND_CLASS_INIT_TIME: 1436 // Convert ns to us, reduce to 32 bits. 1437 return static_cast<int>(stats->class_init_time_ns / 1000); 1438 case KIND_EXT_ALLOCATED_OBJECTS: 1439 case KIND_EXT_ALLOCATED_BYTES: 1440 case KIND_EXT_FREED_OBJECTS: 1441 case KIND_EXT_FREED_BYTES: 1442 return 0; // backward compatibility 1443 default: 1444 LOG(FATAL) << "Unknown statistic " << kind; 1445 return -1; // unreachable 1446 } 1447} 1448 1449void Runtime::BlockSignals() { 1450 SignalSet signals; 1451 signals.Add(SIGPIPE); 1452 // SIGQUIT is used to dump the runtime's state (including stack traces). 1453 signals.Add(SIGQUIT); 1454 // SIGUSR1 is used to initiate a GC. 1455 signals.Add(SIGUSR1); 1456 signals.Block(); 1457} 1458 1459bool Runtime::AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group, 1460 bool create_peer) { 1461 return Thread::Attach(thread_name, as_daemon, thread_group, create_peer) != nullptr; 1462} 1463 1464void Runtime::DetachCurrentThread() { 1465 Thread* self = Thread::Current(); 1466 if (self == nullptr) { 1467 LOG(FATAL) << "attempting to detach thread that is not attached"; 1468 } 1469 if (self->HasManagedStack()) { 1470 LOG(FATAL) << *Thread::Current() << " attempting to detach while still running code"; 1471 } 1472 thread_list_->Unregister(self); 1473} 1474 1475mirror::Throwable* Runtime::GetPreAllocatedOutOfMemoryError() { 1476 mirror::Throwable* oome = pre_allocated_OutOfMemoryError_.Read(); 1477 if (oome == nullptr) { 1478 LOG(ERROR) << "Failed to return pre-allocated OOME"; 1479 } 1480 return oome; 1481} 1482 1483mirror::Throwable* Runtime::GetPreAllocatedNoClassDefFoundError() { 1484 mirror::Throwable* ncdfe = pre_allocated_NoClassDefFoundError_.Read(); 1485 if (ncdfe == nullptr) { 1486 LOG(ERROR) << "Failed to return pre-allocated NoClassDefFoundError"; 1487 } 1488 return ncdfe; 1489} 1490 1491void Runtime::VisitConstantRoots(RootVisitor* visitor) { 1492 // Visit the classes held as static in mirror classes, these can be visited concurrently and only 1493 // need to be visited once per GC since they never change. 1494 mirror::Class::VisitRoots(visitor); 1495 mirror::Constructor::VisitRoots(visitor); 1496 mirror::Reference::VisitRoots(visitor); 1497 mirror::Method::VisitRoots(visitor); 1498 mirror::StackTraceElement::VisitRoots(visitor); 1499 mirror::String::VisitRoots(visitor); 1500 mirror::Throwable::VisitRoots(visitor); 1501 mirror::Field::VisitRoots(visitor); 1502 // Visit all the primitive array types classes. 1503 mirror::PrimitiveArray<uint8_t>::VisitRoots(visitor); // BooleanArray 1504 mirror::PrimitiveArray<int8_t>::VisitRoots(visitor); // ByteArray 1505 mirror::PrimitiveArray<uint16_t>::VisitRoots(visitor); // CharArray 1506 mirror::PrimitiveArray<double>::VisitRoots(visitor); // DoubleArray 1507 mirror::PrimitiveArray<float>::VisitRoots(visitor); // FloatArray 1508 mirror::PrimitiveArray<int32_t>::VisitRoots(visitor); // IntArray 1509 mirror::PrimitiveArray<int64_t>::VisitRoots(visitor); // LongArray 1510 mirror::PrimitiveArray<int16_t>::VisitRoots(visitor); // ShortArray 1511 // Visiting the roots of these ArtMethods is not currently required since all the GcRoots are 1512 // null. 1513 BufferedRootVisitor<16> buffered_visitor(visitor, RootInfo(kRootVMInternal)); 1514 const size_t pointer_size = GetClassLinker()->GetImagePointerSize(); 1515 if (HasResolutionMethod()) { 1516 resolution_method_->VisitRoots(buffered_visitor, pointer_size); 1517 } 1518 if (HasImtConflictMethod()) { 1519 imt_conflict_method_->VisitRoots(buffered_visitor, pointer_size); 1520 } 1521 if (imt_unimplemented_method_ != nullptr) { 1522 imt_unimplemented_method_->VisitRoots(buffered_visitor, pointer_size); 1523 } 1524 for (size_t i = 0; i < kLastCalleeSaveType; ++i) { 1525 auto* m = reinterpret_cast<ArtMethod*>(callee_save_methods_[i]); 1526 if (m != nullptr) { 1527 m->VisitRoots(buffered_visitor, pointer_size); 1528 } 1529 } 1530} 1531 1532void Runtime::VisitConcurrentRoots(RootVisitor* visitor, VisitRootFlags flags) { 1533 intern_table_->VisitRoots(visitor, flags); 1534 class_linker_->VisitRoots(visitor, flags); 1535 heap_->VisitAllocationRecords(visitor); 1536 if ((flags & kVisitRootFlagNewRoots) == 0) { 1537 // Guaranteed to have no new roots in the constant roots. 1538 VisitConstantRoots(visitor); 1539 } 1540 Dbg::VisitRoots(visitor); 1541} 1542 1543void Runtime::VisitTransactionRoots(RootVisitor* visitor) { 1544 if (preinitialization_transaction_ != nullptr) { 1545 preinitialization_transaction_->VisitRoots(visitor); 1546 } 1547} 1548 1549void Runtime::VisitNonThreadRoots(RootVisitor* visitor) { 1550 java_vm_->VisitRoots(visitor); 1551 sentinel_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1552 pre_allocated_OutOfMemoryError_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1553 pre_allocated_NoClassDefFoundError_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1554 verifier::MethodVerifier::VisitStaticRoots(visitor); 1555 VisitTransactionRoots(visitor); 1556} 1557 1558void Runtime::VisitNonConcurrentRoots(RootVisitor* visitor) { 1559 thread_list_->VisitRoots(visitor); 1560 VisitNonThreadRoots(visitor); 1561} 1562 1563void Runtime::VisitThreadRoots(RootVisitor* visitor) { 1564 thread_list_->VisitRoots(visitor); 1565} 1566 1567size_t Runtime::FlipThreadRoots(Closure* thread_flip_visitor, Closure* flip_callback, 1568 gc::collector::GarbageCollector* collector) { 1569 return thread_list_->FlipThreadRoots(thread_flip_visitor, flip_callback, collector); 1570} 1571 1572void Runtime::VisitRoots(RootVisitor* visitor, VisitRootFlags flags) { 1573 VisitNonConcurrentRoots(visitor); 1574 VisitConcurrentRoots(visitor, flags); 1575} 1576 1577void Runtime::VisitImageRoots(RootVisitor* visitor) { 1578 for (auto* space : GetHeap()->GetContinuousSpaces()) { 1579 if (space->IsImageSpace()) { 1580 auto* image_space = space->AsImageSpace(); 1581 const auto& image_header = image_space->GetImageHeader(); 1582 for (size_t i = 0; i < ImageHeader::kImageRootsMax; ++i) { 1583 auto* obj = image_header.GetImageRoot(static_cast<ImageHeader::ImageRoot>(i)); 1584 if (obj != nullptr) { 1585 auto* after_obj = obj; 1586 visitor->VisitRoot(&after_obj, RootInfo(kRootStickyClass)); 1587 CHECK_EQ(after_obj, obj); 1588 } 1589 } 1590 } 1591 } 1592} 1593 1594ArtMethod* Runtime::CreateImtConflictMethod() { 1595 auto* method = Runtime::Current()->GetClassLinker()->CreateRuntimeMethod(); 1596 // When compiling, the code pointer will get set later when the image is loaded. 1597 if (IsAotCompiler()) { 1598 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1599 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1600 } else { 1601 method->SetEntryPointFromQuickCompiledCode(GetQuickImtConflictStub()); 1602 } 1603 return method; 1604} 1605 1606void Runtime::SetImtConflictMethod(ArtMethod* method) { 1607 CHECK(method != nullptr); 1608 CHECK(method->IsRuntimeMethod()); 1609 imt_conflict_method_ = method; 1610} 1611 1612ArtMethod* Runtime::CreateResolutionMethod() { 1613 auto* method = Runtime::Current()->GetClassLinker()->CreateRuntimeMethod(); 1614 // When compiling, the code pointer will get set later when the image is loaded. 1615 if (IsAotCompiler()) { 1616 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1617 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1618 } else { 1619 method->SetEntryPointFromQuickCompiledCode(GetQuickResolutionStub()); 1620 } 1621 return method; 1622} 1623 1624ArtMethod* Runtime::CreateCalleeSaveMethod() { 1625 auto* method = Runtime::Current()->GetClassLinker()->CreateRuntimeMethod(); 1626 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1627 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1628 DCHECK_NE(instruction_set_, kNone); 1629 DCHECK(method->IsRuntimeMethod()); 1630 return method; 1631} 1632 1633void Runtime::DisallowNewSystemWeaks() { 1634 CHECK(!kUseReadBarrier); 1635 monitor_list_->DisallowNewMonitors(); 1636 intern_table_->ChangeWeakRootState(gc::kWeakRootStateNoReadsOrWrites); 1637 java_vm_->DisallowNewWeakGlobals(); 1638 heap_->DisallowNewAllocationRecords(); 1639 lambda_box_table_->DisallowNewWeakBoxedLambdas(); 1640} 1641 1642void Runtime::AllowNewSystemWeaks() { 1643 CHECK(!kUseReadBarrier); 1644 monitor_list_->AllowNewMonitors(); 1645 intern_table_->ChangeWeakRootState(gc::kWeakRootStateNormal); // TODO: Do this in the sweeping. 1646 java_vm_->AllowNewWeakGlobals(); 1647 heap_->AllowNewAllocationRecords(); 1648 lambda_box_table_->AllowNewWeakBoxedLambdas(); 1649} 1650 1651void Runtime::BroadcastForNewSystemWeaks() { 1652 // This is used for the read barrier case that uses the thread-local 1653 // Thread::GetWeakRefAccessEnabled() flag. 1654 CHECK(kUseReadBarrier); 1655 monitor_list_->BroadcastForNewMonitors(); 1656 intern_table_->BroadcastForNewInterns(); 1657 java_vm_->BroadcastForNewWeakGlobals(); 1658 heap_->BroadcastForNewAllocationRecords(); 1659 lambda_box_table_->BroadcastForNewWeakBoxedLambdas(); 1660} 1661 1662void Runtime::SetInstructionSet(InstructionSet instruction_set) { 1663 instruction_set_ = instruction_set; 1664 if ((instruction_set_ == kThumb2) || (instruction_set_ == kArm)) { 1665 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1666 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1667 callee_save_method_frame_infos_[i] = arm::ArmCalleeSaveMethodFrameInfo(type); 1668 } 1669 } else if (instruction_set_ == kMips) { 1670 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1671 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1672 callee_save_method_frame_infos_[i] = mips::MipsCalleeSaveMethodFrameInfo(type); 1673 } 1674 } else if (instruction_set_ == kMips64) { 1675 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1676 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1677 callee_save_method_frame_infos_[i] = mips64::Mips64CalleeSaveMethodFrameInfo(type); 1678 } 1679 } else if (instruction_set_ == kX86) { 1680 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1681 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1682 callee_save_method_frame_infos_[i] = x86::X86CalleeSaveMethodFrameInfo(type); 1683 } 1684 } else if (instruction_set_ == kX86_64) { 1685 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1686 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1687 callee_save_method_frame_infos_[i] = x86_64::X86_64CalleeSaveMethodFrameInfo(type); 1688 } 1689 } else if (instruction_set_ == kArm64) { 1690 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1691 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1692 callee_save_method_frame_infos_[i] = arm64::Arm64CalleeSaveMethodFrameInfo(type); 1693 } 1694 } else { 1695 UNIMPLEMENTED(FATAL) << instruction_set_; 1696 } 1697} 1698 1699void Runtime::SetCalleeSaveMethod(ArtMethod* method, CalleeSaveType type) { 1700 DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType)); 1701 CHECK(method != nullptr); 1702 callee_save_methods_[type] = reinterpret_cast<uintptr_t>(method); 1703} 1704 1705void Runtime::RegisterAppInfo(const std::vector<std::string>& code_paths, 1706 const std::string& profile_output_filename) { 1707 if (jit_.get() == nullptr) { 1708 // We are not JITing. Nothing to do. 1709 return; 1710 } 1711 1712 VLOG(profiler) << "Register app with " << profile_output_filename 1713 << " " << Join(code_paths, ':'); 1714 1715 if (profile_output_filename.empty()) { 1716 LOG(WARNING) << "JIT profile information will not be recorded: profile filename is empty."; 1717 return; 1718 } 1719 if (!FileExists(profile_output_filename)) { 1720 LOG(WARNING) << "JIT profile information will not be recorded: profile file does not exits."; 1721 return; 1722 } 1723 if (code_paths.empty()) { 1724 LOG(WARNING) << "JIT profile information will not be recorded: code paths is empty."; 1725 return; 1726 } 1727 1728 profile_output_filename_ = profile_output_filename; 1729 jit_->StartProfileSaver(profile_output_filename, code_paths); 1730} 1731 1732// Transaction support. 1733void Runtime::EnterTransactionMode(Transaction* transaction) { 1734 DCHECK(IsAotCompiler()); 1735 DCHECK(transaction != nullptr); 1736 DCHECK(!IsActiveTransaction()); 1737 preinitialization_transaction_ = transaction; 1738} 1739 1740void Runtime::ExitTransactionMode() { 1741 DCHECK(IsAotCompiler()); 1742 DCHECK(IsActiveTransaction()); 1743 preinitialization_transaction_ = nullptr; 1744} 1745 1746bool Runtime::IsTransactionAborted() const { 1747 if (!IsActiveTransaction()) { 1748 return false; 1749 } else { 1750 DCHECK(IsAotCompiler()); 1751 return preinitialization_transaction_->IsAborted(); 1752 } 1753} 1754 1755void Runtime::AbortTransactionAndThrowAbortError(Thread* self, const std::string& abort_message) { 1756 DCHECK(IsAotCompiler()); 1757 DCHECK(IsActiveTransaction()); 1758 // Throwing an exception may cause its class initialization. If we mark the transaction 1759 // aborted before that, we may warn with a false alarm. Throwing the exception before 1760 // marking the transaction aborted avoids that. 1761 preinitialization_transaction_->ThrowAbortError(self, &abort_message); 1762 preinitialization_transaction_->Abort(abort_message); 1763} 1764 1765void Runtime::ThrowTransactionAbortError(Thread* self) { 1766 DCHECK(IsAotCompiler()); 1767 DCHECK(IsActiveTransaction()); 1768 // Passing nullptr means we rethrow an exception with the earlier transaction abort message. 1769 preinitialization_transaction_->ThrowAbortError(self, nullptr); 1770} 1771 1772void Runtime::RecordWriteFieldBoolean(mirror::Object* obj, MemberOffset field_offset, 1773 uint8_t value, bool is_volatile) const { 1774 DCHECK(IsAotCompiler()); 1775 DCHECK(IsActiveTransaction()); 1776 preinitialization_transaction_->RecordWriteFieldBoolean(obj, field_offset, value, is_volatile); 1777} 1778 1779void Runtime::RecordWriteFieldByte(mirror::Object* obj, MemberOffset field_offset, 1780 int8_t value, bool is_volatile) const { 1781 DCHECK(IsAotCompiler()); 1782 DCHECK(IsActiveTransaction()); 1783 preinitialization_transaction_->RecordWriteFieldByte(obj, field_offset, value, is_volatile); 1784} 1785 1786void Runtime::RecordWriteFieldChar(mirror::Object* obj, MemberOffset field_offset, 1787 uint16_t value, bool is_volatile) const { 1788 DCHECK(IsAotCompiler()); 1789 DCHECK(IsActiveTransaction()); 1790 preinitialization_transaction_->RecordWriteFieldChar(obj, field_offset, value, is_volatile); 1791} 1792 1793void Runtime::RecordWriteFieldShort(mirror::Object* obj, MemberOffset field_offset, 1794 int16_t value, bool is_volatile) const { 1795 DCHECK(IsAotCompiler()); 1796 DCHECK(IsActiveTransaction()); 1797 preinitialization_transaction_->RecordWriteFieldShort(obj, field_offset, value, is_volatile); 1798} 1799 1800void Runtime::RecordWriteField32(mirror::Object* obj, MemberOffset field_offset, 1801 uint32_t value, bool is_volatile) const { 1802 DCHECK(IsAotCompiler()); 1803 DCHECK(IsActiveTransaction()); 1804 preinitialization_transaction_->RecordWriteField32(obj, field_offset, value, is_volatile); 1805} 1806 1807void Runtime::RecordWriteField64(mirror::Object* obj, MemberOffset field_offset, 1808 uint64_t value, bool is_volatile) const { 1809 DCHECK(IsAotCompiler()); 1810 DCHECK(IsActiveTransaction()); 1811 preinitialization_transaction_->RecordWriteField64(obj, field_offset, value, is_volatile); 1812} 1813 1814void Runtime::RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset, 1815 mirror::Object* value, bool is_volatile) const { 1816 DCHECK(IsAotCompiler()); 1817 DCHECK(IsActiveTransaction()); 1818 preinitialization_transaction_->RecordWriteFieldReference(obj, field_offset, value, is_volatile); 1819} 1820 1821void Runtime::RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const { 1822 DCHECK(IsAotCompiler()); 1823 DCHECK(IsActiveTransaction()); 1824 preinitialization_transaction_->RecordWriteArray(array, index, value); 1825} 1826 1827void Runtime::RecordStrongStringInsertion(mirror::String* s) const { 1828 DCHECK(IsAotCompiler()); 1829 DCHECK(IsActiveTransaction()); 1830 preinitialization_transaction_->RecordStrongStringInsertion(s); 1831} 1832 1833void Runtime::RecordWeakStringInsertion(mirror::String* s) const { 1834 DCHECK(IsAotCompiler()); 1835 DCHECK(IsActiveTransaction()); 1836 preinitialization_transaction_->RecordWeakStringInsertion(s); 1837} 1838 1839void Runtime::RecordStrongStringRemoval(mirror::String* s) const { 1840 DCHECK(IsAotCompiler()); 1841 DCHECK(IsActiveTransaction()); 1842 preinitialization_transaction_->RecordStrongStringRemoval(s); 1843} 1844 1845void Runtime::RecordWeakStringRemoval(mirror::String* s) const { 1846 DCHECK(IsAotCompiler()); 1847 DCHECK(IsActiveTransaction()); 1848 preinitialization_transaction_->RecordWeakStringRemoval(s); 1849} 1850 1851void Runtime::SetFaultMessage(const std::string& message) { 1852 MutexLock mu(Thread::Current(), fault_message_lock_); 1853 fault_message_ = message; 1854} 1855 1856void Runtime::AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* argv) 1857 const { 1858 if (GetInstrumentation()->InterpretOnly() || UseJit()) { 1859 argv->push_back("--compiler-filter=interpret-only"); 1860 } 1861 1862 // Make the dex2oat instruction set match that of the launching runtime. If we have multiple 1863 // architecture support, dex2oat may be compiled as a different instruction-set than that 1864 // currently being executed. 1865 std::string instruction_set("--instruction-set="); 1866 instruction_set += GetInstructionSetString(kRuntimeISA); 1867 argv->push_back(instruction_set); 1868 1869 std::unique_ptr<const InstructionSetFeatures> features(InstructionSetFeatures::FromCppDefines()); 1870 std::string feature_string("--instruction-set-features="); 1871 feature_string += features->GetFeatureString(); 1872 argv->push_back(feature_string); 1873} 1874 1875void Runtime::CreateJit() { 1876 CHECK(!IsAotCompiler()); 1877 if (GetInstrumentation()->IsForcedInterpretOnly()) { 1878 // Don't create JIT if forced interpret only. 1879 return; 1880 } 1881 std::string error_msg; 1882 jit_.reset(jit::Jit::Create(jit_options_.get(), &error_msg)); 1883 if (jit_.get() != nullptr) { 1884 compiler_callbacks_ = jit_->GetCompilerCallbacks(); 1885 jit_->CreateInstrumentationCache(jit_options_->GetCompileThreshold(), 1886 jit_options_->GetWarmupThreshold()); 1887 jit_->CreateThreadPool(); 1888 1889 // Notify native debugger about the classes already loaded before the creation of the jit. 1890 jit_->DumpTypeInfoForLoadedTypes(GetClassLinker()); 1891 } else { 1892 LOG(WARNING) << "Failed to create JIT " << error_msg; 1893 } 1894} 1895 1896bool Runtime::CanRelocate() const { 1897 return !IsAotCompiler() || compiler_callbacks_->IsRelocationPossible(); 1898} 1899 1900bool Runtime::IsCompilingBootImage() const { 1901 return IsCompiler() && compiler_callbacks_->IsBootImage(); 1902} 1903 1904void Runtime::SetResolutionMethod(ArtMethod* method) { 1905 CHECK(method != nullptr); 1906 CHECK(method->IsRuntimeMethod()) << method; 1907 resolution_method_ = method; 1908} 1909 1910void Runtime::SetImtUnimplementedMethod(ArtMethod* method) { 1911 CHECK(method != nullptr); 1912 CHECK(method->IsRuntimeMethod()); 1913 imt_unimplemented_method_ = method; 1914} 1915 1916bool Runtime::IsVerificationEnabled() const { 1917 return verify_ == verifier::VerifyMode::kEnable; 1918} 1919 1920bool Runtime::IsVerificationSoftFail() const { 1921 return verify_ == verifier::VerifyMode::kSoftFail; 1922} 1923 1924LinearAlloc* Runtime::CreateLinearAlloc() { 1925 // For 64 bit compilers, it needs to be in low 4GB in the case where we are cross compiling for a 1926 // 32 bit target. In this case, we have 32 bit pointers in the dex cache arrays which can't hold 1927 // when we have 64 bit ArtMethod pointers. 1928 return (IsAotCompiler() && Is64BitInstructionSet(kRuntimeISA)) 1929 ? new LinearAlloc(low_4gb_arena_pool_.get()) 1930 : new LinearAlloc(arena_pool_.get()); 1931} 1932 1933double Runtime::GetHashTableMinLoadFactor() const { 1934 return is_low_memory_mode_ ? kLowMemoryMinLoadFactor : kNormalMinLoadFactor; 1935} 1936 1937double Runtime::GetHashTableMaxLoadFactor() const { 1938 return is_low_memory_mode_ ? kLowMemoryMaxLoadFactor : kNormalMaxLoadFactor; 1939} 1940 1941} // namespace art 1942