runtime.cc revision 6eb6a39bdcf669655190d40d20f8d2e663b262f4
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-inl.h" 75#include "instrumentation.h" 76#include "intern_table.h" 77#include "interpreter/interpreter.h" 78#include "jit/jit.h" 79#include "jni_internal.h" 80#include "linear_alloc.h" 81#include "lambda/box_table.h" 82#include "mirror/array.h" 83#include "mirror/class-inl.h" 84#include "mirror/class_loader.h" 85#include "mirror/field.h" 86#include "mirror/method.h" 87#include "mirror/stack_trace_element.h" 88#include "mirror/throwable.h" 89#include "monitor.h" 90#include "native/dalvik_system_DexFile.h" 91#include "native/dalvik_system_VMDebug.h" 92#include "native/dalvik_system_VMRuntime.h" 93#include "native/dalvik_system_VMStack.h" 94#include "native/dalvik_system_ZygoteHooks.h" 95#include "native/java_lang_Class.h" 96#include "native/java_lang_DexCache.h" 97#include "native/java_lang_Object.h" 98#include "native/java_lang_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 DumpNativeStack(os, GetTid(), nullptr, " native: ", nullptr); 339 return; 340 } 341 Thread* self = Thread::Current(); 342 if (self == nullptr) { 343 os << "(Aborting thread was not attached to runtime!)\n"; 344 DumpKernelStack(os, GetTid(), " kernel: ", false); 345 DumpNativeStack(os, GetTid(), nullptr, " native: ", nullptr); 346 } else { 347 os << "Aborting thread:\n"; 348 if (Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)) { 349 DumpThread(os, self); 350 } else { 351 if (Locks::mutator_lock_->SharedTryLock(self)) { 352 DumpThread(os, self); 353 Locks::mutator_lock_->SharedUnlock(self); 354 } 355 } 356 } 357 DumpAllThreads(os, self); 358 } 359 360 // No thread-safety analysis as we do explicitly test for holding the mutator lock. 361 void DumpThread(std::ostream& os, Thread* self) const NO_THREAD_SAFETY_ANALYSIS { 362 DCHECK(Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)); 363 self->Dump(os); 364 if (self->IsExceptionPending()) { 365 mirror::Throwable* exception = self->GetException(); 366 os << "Pending exception " << exception->Dump(); 367 } 368 } 369 370 void DumpAllThreads(std::ostream& os, Thread* self) const { 371 Runtime* runtime = Runtime::Current(); 372 if (runtime != nullptr) { 373 ThreadList* thread_list = runtime->GetThreadList(); 374 if (thread_list != nullptr) { 375 bool tll_already_held = Locks::thread_list_lock_->IsExclusiveHeld(self); 376 bool ml_already_held = Locks::mutator_lock_->IsSharedHeld(self); 377 if (!tll_already_held || !ml_already_held) { 378 os << "Dumping all threads without appropriate locks held:" 379 << (!tll_already_held ? " thread list lock" : "") 380 << (!ml_already_held ? " mutator lock" : "") 381 << "\n"; 382 } 383 os << "All threads:\n"; 384 thread_list->Dump(os); 385 } 386 } 387 } 388}; 389 390void Runtime::Abort() { 391 gAborting++; // set before taking any locks 392 393 // Ensure that we don't have multiple threads trying to abort at once, 394 // which would result in significantly worse diagnostics. 395 MutexLock mu(Thread::Current(), *Locks::abort_lock_); 396 397 // Get any pending output out of the way. 398 fflush(nullptr); 399 400 // Many people have difficulty distinguish aborts from crashes, 401 // so be explicit. 402 AbortState state; 403 LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state); 404 405 // Call the abort hook if we have one. 406 if (Runtime::Current() != nullptr && Runtime::Current()->abort_ != nullptr) { 407 LOG(INTERNAL_FATAL) << "Calling abort hook..."; 408 Runtime::Current()->abort_(); 409 // notreached 410 LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!"; 411 } 412 413#if defined(__GLIBC__) 414 // TODO: we ought to be able to use pthread_kill(3) here (or abort(3), 415 // which POSIX defines in terms of raise(3), which POSIX defines in terms 416 // of pthread_kill(3)). On Linux, though, libcorkscrew can't unwind through 417 // libpthread, which means the stacks we dump would be useless. Calling 418 // tgkill(2) directly avoids that. 419 syscall(__NR_tgkill, getpid(), GetTid(), SIGABRT); 420 // TODO: LLVM installs it's own SIGABRT handler so exit to be safe... Can we disable that in LLVM? 421 // If not, we could use sigaction(3) before calling tgkill(2) and lose this call to exit(3). 422 exit(1); 423#else 424 abort(); 425#endif 426 // notreached 427} 428 429void Runtime::PreZygoteFork() { 430 heap_->PreZygoteFork(); 431} 432 433void Runtime::CallExitHook(jint status) { 434 if (exit_ != nullptr) { 435 ScopedThreadStateChange tsc(Thread::Current(), kNative); 436 exit_(status); 437 LOG(WARNING) << "Exit hook returned instead of exiting!"; 438 } 439} 440 441void Runtime::SweepSystemWeaks(IsMarkedVisitor* visitor) { 442 GetInternTable()->SweepInternTableWeaks(visitor); 443 GetMonitorList()->SweepMonitorList(visitor); 444 GetJavaVM()->SweepJniWeakGlobals(visitor); 445 GetHeap()->SweepAllocationRecords(visitor); 446 GetLambdaBoxTable()->SweepWeakBoxedLambdas(visitor); 447} 448 449bool Runtime::ParseOptions(const RuntimeOptions& raw_options, 450 bool ignore_unrecognized, 451 RuntimeArgumentMap* runtime_options) { 452 InitLogging(/* argv */ nullptr); // Calls Locks::Init() as a side effect. 453 bool parsed = ParsedOptions::Parse(raw_options, ignore_unrecognized, runtime_options); 454 if (!parsed) { 455 LOG(ERROR) << "Failed to parse options"; 456 return false; 457 } 458 return true; 459} 460 461bool Runtime::Create(RuntimeArgumentMap&& runtime_options) { 462 // TODO: acquire a static mutex on Runtime to avoid racing. 463 if (Runtime::instance_ != nullptr) { 464 return false; 465 } 466 instance_ = new Runtime; 467 if (!instance_->Init(std::move(runtime_options))) { 468 // TODO: Currently deleting the instance will abort the runtime on destruction. Now This will 469 // leak memory, instead. Fix the destructor. b/19100793. 470 // delete instance_; 471 instance_ = nullptr; 472 return false; 473 } 474 return true; 475} 476 477bool Runtime::Create(const RuntimeOptions& raw_options, bool ignore_unrecognized) { 478 RuntimeArgumentMap runtime_options; 479 return ParseOptions(raw_options, ignore_unrecognized, &runtime_options) && 480 Create(std::move(runtime_options)); 481} 482 483static jobject CreateSystemClassLoader(Runtime* runtime) { 484 if (runtime->IsAotCompiler() && !runtime->GetCompilerCallbacks()->IsBootImage()) { 485 return nullptr; 486 } 487 488 ScopedObjectAccess soa(Thread::Current()); 489 ClassLinker* cl = Runtime::Current()->GetClassLinker(); 490 auto pointer_size = cl->GetImagePointerSize(); 491 492 StackHandleScope<2> hs(soa.Self()); 493 Handle<mirror::Class> class_loader_class( 494 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader))); 495 CHECK(cl->EnsureInitialized(soa.Self(), class_loader_class, true, true)); 496 497 ArtMethod* getSystemClassLoader = class_loader_class->FindDirectMethod( 498 "getSystemClassLoader", "()Ljava/lang/ClassLoader;", pointer_size); 499 CHECK(getSystemClassLoader != nullptr); 500 501 JValue result = InvokeWithJValues(soa, nullptr, soa.EncodeMethod(getSystemClassLoader), nullptr); 502 JNIEnv* env = soa.Self()->GetJniEnv(); 503 ScopedLocalRef<jobject> system_class_loader(env, soa.AddLocalReference<jobject>(result.GetL())); 504 CHECK(system_class_loader.get() != nullptr); 505 506 soa.Self()->SetClassLoaderOverride(system_class_loader.get()); 507 508 Handle<mirror::Class> thread_class( 509 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread))); 510 CHECK(cl->EnsureInitialized(soa.Self(), thread_class, true, true)); 511 512 ArtField* contextClassLoader = 513 thread_class->FindDeclaredInstanceField("contextClassLoader", "Ljava/lang/ClassLoader;"); 514 CHECK(contextClassLoader != nullptr); 515 516 // We can't run in a transaction yet. 517 contextClassLoader->SetObject<false>(soa.Self()->GetPeer(), 518 soa.Decode<mirror::ClassLoader*>(system_class_loader.get())); 519 520 return env->NewGlobalRef(system_class_loader.get()); 521} 522 523std::string Runtime::GetPatchoatExecutable() const { 524 if (!patchoat_executable_.empty()) { 525 return patchoat_executable_; 526 } 527 std::string patchoat_executable(GetAndroidRoot()); 528 patchoat_executable += (kIsDebugBuild ? "/bin/patchoatd" : "/bin/patchoat"); 529 return patchoat_executable; 530} 531 532std::string Runtime::GetCompilerExecutable() const { 533 if (!compiler_executable_.empty()) { 534 return compiler_executable_; 535 } 536 std::string compiler_executable(GetAndroidRoot()); 537 compiler_executable += (kIsDebugBuild ? "/bin/dex2oatd" : "/bin/dex2oat"); 538 return compiler_executable; 539} 540 541bool Runtime::Start() { 542 VLOG(startup) << "Runtime::Start entering"; 543 544 CHECK(!no_sig_chain_) << "A started runtime should have sig chain enabled"; 545 546 // If a debug host build, disable ptrace restriction for debugging and test timeout thread dump. 547 // Only 64-bit as prctl() may fail in 32 bit userspace on a 64-bit kernel. 548#if defined(__linux__) && !defined(__ANDROID__) && defined(__x86_64__) 549 if (kIsDebugBuild) { 550 CHECK_EQ(prctl(PR_SET_PTRACER, PR_SET_PTRACER_ANY), 0); 551 } 552#endif 553 554 // Restore main thread state to kNative as expected by native code. 555 Thread* self = Thread::Current(); 556 557 self->TransitionFromRunnableToSuspended(kNative); 558 559 started_ = true; 560 561 // Use !IsAotCompiler so that we get test coverage, tests are never the zygote. 562 if (!IsAotCompiler()) { 563 ScopedObjectAccess soa(self); 564 ATRACE_BEGIN("AddImageStringsToTable"); 565 GetInternTable()->AddImagesStringsToTable(heap_->GetBootImageSpaces()); 566 ATRACE_END(); 567 ATRACE_BEGIN("MoveImageClassesToClassTable"); 568 GetClassLinker()->AddBootImageClassesToClassTable(); 569 ATRACE_END(); 570 } 571 572 // If we are the zygote then we need to wait until after forking to create the code cache 573 // due to SELinux restrictions on r/w/x memory regions. 574 if (!IsZygote() && jit_options_->UseJIT()) { 575 CreateJit(); 576 } 577 578 if (!IsImageDex2OatEnabled() || !GetHeap()->HasBootImageSpace()) { 579 ScopedObjectAccess soa(self); 580 StackHandleScope<1> hs(soa.Self()); 581 auto klass(hs.NewHandle<mirror::Class>(mirror::Class::GetJavaLangClass())); 582 class_linker_->EnsureInitialized(soa.Self(), klass, true, true); 583 } 584 585 // InitNativeMethods needs to be after started_ so that the classes 586 // it touches will have methods linked to the oat file if necessary. 587 ATRACE_BEGIN("InitNativeMethods"); 588 InitNativeMethods(); 589 ATRACE_END(); 590 591 // Initialize well known thread group values that may be accessed threads while attaching. 592 InitThreadGroups(self); 593 594 Thread::FinishStartup(); 595 596 system_class_loader_ = CreateSystemClassLoader(this); 597 598 if (is_zygote_) { 599 if (!InitZygote()) { 600 return false; 601 } 602 } else { 603 if (is_native_bridge_loaded_) { 604 PreInitializeNativeBridge("."); 605 } 606 NativeBridgeAction action = force_native_bridge_ 607 ? NativeBridgeAction::kInitialize 608 : NativeBridgeAction::kUnload; 609 InitNonZygoteOrPostFork(self->GetJniEnv(), 610 /* is_system_server */ false, 611 action, 612 GetInstructionSetString(kRuntimeISA)); 613 } 614 615 ATRACE_BEGIN("StartDaemonThreads"); 616 StartDaemonThreads(); 617 ATRACE_END(); 618 619 { 620 ScopedObjectAccess soa(self); 621 self->GetJniEnv()->locals.AssertEmpty(); 622 } 623 624 VLOG(startup) << "Runtime::Start exiting"; 625 finished_starting_ = true; 626 627 if (profiler_options_.IsEnabled() && !profile_output_filename_.empty()) { 628 // User has asked for a profile using -Xenable-profiler. 629 // Create the profile file if it doesn't exist. 630 int fd = open(profile_output_filename_.c_str(), O_RDWR|O_CREAT|O_EXCL, 0660); 631 if (fd >= 0) { 632 close(fd); 633 } else if (errno != EEXIST) { 634 LOG(WARNING) << "Failed to access the profile file. Profiler disabled."; 635 } 636 } 637 638 if (trace_config_.get() != nullptr && trace_config_->trace_file != "") { 639 ScopedThreadStateChange tsc(self, kWaitingForMethodTracingStart); 640 Trace::Start(trace_config_->trace_file.c_str(), 641 -1, 642 static_cast<int>(trace_config_->trace_file_size), 643 0, 644 trace_config_->trace_output_mode, 645 trace_config_->trace_mode, 646 0); 647 } 648 649 return true; 650} 651 652void Runtime::EndThreadBirth() REQUIRES(Locks::runtime_shutdown_lock_) { 653 DCHECK_GT(threads_being_born_, 0U); 654 threads_being_born_--; 655 if (shutting_down_started_ && threads_being_born_ == 0) { 656 shutdown_cond_->Broadcast(Thread::Current()); 657 } 658} 659 660// Do zygote-mode-only initialization. 661bool Runtime::InitZygote() { 662#ifdef __linux__ 663 // zygote goes into its own process group 664 setpgid(0, 0); 665 666 // See storage config details at http://source.android.com/tech/storage/ 667 // Create private mount namespace shared by all children 668 if (unshare(CLONE_NEWNS) == -1) { 669 PLOG(ERROR) << "Failed to unshare()"; 670 return false; 671 } 672 673 // Mark rootfs as being a slave so that changes from default 674 // namespace only flow into our children. 675 if (mount("rootfs", "/", nullptr, (MS_SLAVE | MS_REC), nullptr) == -1) { 676 PLOG(ERROR) << "Failed to mount() rootfs as MS_SLAVE"; 677 return false; 678 } 679 680 // Create a staging tmpfs that is shared by our children; they will 681 // bind mount storage into their respective private namespaces, which 682 // are isolated from each other. 683 const char* target_base = getenv("EMULATED_STORAGE_TARGET"); 684 if (target_base != nullptr) { 685 if (mount("tmpfs", target_base, "tmpfs", MS_NOSUID | MS_NODEV, 686 "uid=0,gid=1028,mode=0751") == -1) { 687 PLOG(ERROR) << "Failed to mount tmpfs to " << target_base; 688 return false; 689 } 690 } 691 692 return true; 693#else 694 UNIMPLEMENTED(FATAL); 695 return false; 696#endif 697} 698 699void Runtime::InitNonZygoteOrPostFork( 700 JNIEnv* env, bool is_system_server, NativeBridgeAction action, const char* isa) { 701 is_zygote_ = false; 702 703 if (is_native_bridge_loaded_) { 704 switch (action) { 705 case NativeBridgeAction::kUnload: 706 UnloadNativeBridge(); 707 is_native_bridge_loaded_ = false; 708 break; 709 710 case NativeBridgeAction::kInitialize: 711 InitializeNativeBridge(env, isa); 712 break; 713 } 714 } 715 716 // Create the thread pools. 717 heap_->CreateThreadPool(); 718 // Reset the gc performance data at zygote fork so that the GCs 719 // before fork aren't attributed to an app. 720 heap_->ResetGcPerformanceInfo(); 721 722 if (!is_system_server && !safe_mode_ && jit_options_->UseJIT() && jit_.get() == nullptr) { 723 // Note that when running ART standalone (not zygote, nor zygote fork), 724 // the jit may have already been created. 725 CreateJit(); 726 } 727 728 StartSignalCatcher(); 729 730 // Start the JDWP thread. If the command-line debugger flags specified "suspend=y", 731 // this will pause the runtime, so we probably want this to come last. 732 Dbg::StartJdwp(); 733} 734 735void Runtime::StartSignalCatcher() { 736 if (!is_zygote_) { 737 signal_catcher_ = new SignalCatcher(stack_trace_file_); 738 } 739} 740 741bool Runtime::IsShuttingDown(Thread* self) { 742 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 743 return IsShuttingDownLocked(); 744} 745 746bool Runtime::IsDebuggable() const { 747 const OatFile* oat_file = GetOatFileManager().GetPrimaryOatFile(); 748 return oat_file != nullptr && oat_file->IsDebuggable(); 749} 750 751void Runtime::StartDaemonThreads() { 752 VLOG(startup) << "Runtime::StartDaemonThreads entering"; 753 754 Thread* self = Thread::Current(); 755 756 // Must be in the kNative state for calling native methods. 757 CHECK_EQ(self->GetState(), kNative); 758 759 JNIEnv* env = self->GetJniEnv(); 760 env->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 761 WellKnownClasses::java_lang_Daemons_start); 762 if (env->ExceptionCheck()) { 763 env->ExceptionDescribe(); 764 LOG(FATAL) << "Error starting java.lang.Daemons"; 765 } 766 767 VLOG(startup) << "Runtime::StartDaemonThreads exiting"; 768} 769 770// Attempts to open dex files from image(s). Given the image location, try to find the oat file 771// and open it to get the stored dex file. If the image is the first for a multi-image boot 772// classpath, go on and also open the other images. 773static bool OpenDexFilesFromImage(const std::string& image_location, 774 std::vector<std::unique_ptr<const DexFile>>* dex_files, 775 size_t* failures) { 776 DCHECK(dex_files != nullptr) << "OpenDexFilesFromImage: out-param is nullptr"; 777 778 // Use a work-list approach, so that we can easily reuse the opening code. 779 std::vector<std::string> image_locations; 780 image_locations.push_back(image_location); 781 782 for (size_t index = 0; index < image_locations.size(); ++index) { 783 std::string system_filename; 784 bool has_system = false; 785 std::string cache_filename_unused; 786 bool dalvik_cache_exists_unused; 787 bool has_cache_unused; 788 bool is_global_cache_unused; 789 bool found_image = gc::space::ImageSpace::FindImageFilename(image_locations[index].c_str(), 790 kRuntimeISA, 791 &system_filename, 792 &has_system, 793 &cache_filename_unused, 794 &dalvik_cache_exists_unused, 795 &has_cache_unused, 796 &is_global_cache_unused); 797 798 if (!found_image || !has_system) { 799 return false; 800 } 801 802 // We are falling back to non-executable use of the oat file because patching failed, presumably 803 // due to lack of space. 804 std::string oat_filename = 805 ImageHeader::GetOatLocationFromImageLocation(system_filename.c_str()); 806 std::string oat_location = 807 ImageHeader::GetOatLocationFromImageLocation(image_locations[index].c_str()); 808 // Note: in the multi-image case, the image location may end in ".jar," and not ".art." Handle 809 // that here. 810 if (EndsWith(oat_location, ".jar")) { 811 oat_location.replace(oat_location.length() - 3, 3, "oat"); 812 } 813 814 std::unique_ptr<File> file(OS::OpenFileForReading(oat_filename.c_str())); 815 if (file.get() == nullptr) { 816 return false; 817 } 818 std::string error_msg; 819 std::unique_ptr<ElfFile> elf_file(ElfFile::Open(file.release(), false, false, &error_msg)); 820 if (elf_file.get() == nullptr) { 821 return false; 822 } 823 std::unique_ptr<const OatFile> oat_file( 824 OatFile::OpenWithElfFile(elf_file.release(), oat_location, nullptr, &error_msg)); 825 if (oat_file == nullptr) { 826 LOG(WARNING) << "Unable to use '" << oat_filename << "' because " << error_msg; 827 return false; 828 } 829 830 for (const OatFile::OatDexFile* oat_dex_file : oat_file->GetOatDexFiles()) { 831 if (oat_dex_file == nullptr) { 832 *failures += 1; 833 continue; 834 } 835 std::unique_ptr<const DexFile> dex_file = oat_dex_file->OpenDexFile(&error_msg); 836 if (dex_file.get() == nullptr) { 837 *failures += 1; 838 } else { 839 dex_files->push_back(std::move(dex_file)); 840 } 841 } 842 843 if (index == 0) { 844 // First file. See if this is a multi-image environment, and if so, enqueue the other images. 845 const OatHeader& boot_oat_header = oat_file->GetOatHeader(); 846 const char* boot_cp = boot_oat_header.GetStoreValueByKey(OatHeader::kBootClassPath); 847 if (boot_cp != nullptr) { 848 gc::space::ImageSpace::CreateMultiImageLocations(image_locations[0], 849 boot_cp, 850 &image_locations); 851 } 852 } 853 854 Runtime::Current()->GetOatFileManager().RegisterOatFile(std::move(oat_file)); 855 } 856 return true; 857} 858 859 860static size_t OpenDexFiles(const std::vector<std::string>& dex_filenames, 861 const std::vector<std::string>& dex_locations, 862 const std::string& image_location, 863 std::vector<std::unique_ptr<const DexFile>>* dex_files) { 864 DCHECK(dex_files != nullptr) << "OpenDexFiles: out-param is nullptr"; 865 size_t failure_count = 0; 866 if (!image_location.empty() && OpenDexFilesFromImage(image_location, dex_files, &failure_count)) { 867 return failure_count; 868 } 869 failure_count = 0; 870 for (size_t i = 0; i < dex_filenames.size(); i++) { 871 const char* dex_filename = dex_filenames[i].c_str(); 872 const char* dex_location = dex_locations[i].c_str(); 873 std::string error_msg; 874 if (!OS::FileExists(dex_filename)) { 875 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 876 continue; 877 } 878 if (!DexFile::Open(dex_filename, dex_location, &error_msg, dex_files)) { 879 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 880 ++failure_count; 881 } 882 } 883 return failure_count; 884} 885 886void Runtime::SetSentinel(mirror::Object* sentinel) { 887 CHECK(sentinel_.Read() == nullptr); 888 CHECK(sentinel != nullptr); 889 CHECK(!heap_->IsMovableObject(sentinel)); 890 sentinel_ = GcRoot<mirror::Object>(sentinel); 891} 892 893bool Runtime::Init(RuntimeArgumentMap&& runtime_options_in) { 894 RuntimeArgumentMap runtime_options(std::move(runtime_options_in)); 895 ATRACE_BEGIN("Runtime::Init"); 896 CHECK_EQ(sysconf(_SC_PAGE_SIZE), kPageSize); 897 898 MemMap::Init(); 899 900 using Opt = RuntimeArgumentMap; 901 VLOG(startup) << "Runtime::Init -verbose:startup enabled"; 902 903 QuasiAtomic::Startup(); 904 905 oat_file_manager_ = new OatFileManager; 906 907 Monitor::Init(runtime_options.GetOrDefault(Opt::LockProfThreshold), 908 runtime_options.GetOrDefault(Opt::HookIsSensitiveThread)); 909 910 boot_class_path_string_ = runtime_options.ReleaseOrDefault(Opt::BootClassPath); 911 class_path_string_ = runtime_options.ReleaseOrDefault(Opt::ClassPath); 912 properties_ = runtime_options.ReleaseOrDefault(Opt::PropertiesList); 913 914 compiler_callbacks_ = runtime_options.GetOrDefault(Opt::CompilerCallbacksPtr); 915 patchoat_executable_ = runtime_options.ReleaseOrDefault(Opt::PatchOat); 916 must_relocate_ = runtime_options.GetOrDefault(Opt::Relocate); 917 is_zygote_ = runtime_options.Exists(Opt::Zygote); 918 is_explicit_gc_disabled_ = runtime_options.Exists(Opt::DisableExplicitGC); 919 dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::Dex2Oat); 920 image_dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::ImageDex2Oat); 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 ATRACE_BEGIN("CreateHeap"); 962 heap_ = new gc::Heap(runtime_options.GetOrDefault(Opt::MemoryInitialSize), 963 runtime_options.GetOrDefault(Opt::HeapGrowthLimit), 964 runtime_options.GetOrDefault(Opt::HeapMinFree), 965 runtime_options.GetOrDefault(Opt::HeapMaxFree), 966 runtime_options.GetOrDefault(Opt::HeapTargetUtilization), 967 runtime_options.GetOrDefault(Opt::ForegroundHeapGrowthMultiplier), 968 runtime_options.GetOrDefault(Opt::MemoryMaximumSize), 969 runtime_options.GetOrDefault(Opt::NonMovingSpaceCapacity), 970 runtime_options.GetOrDefault(Opt::Image), 971 runtime_options.GetOrDefault(Opt::ImageInstructionSet), 972 xgc_option.collector_type_, 973 runtime_options.GetOrDefault(Opt::BackgroundGc), 974 runtime_options.GetOrDefault(Opt::LargeObjectSpace), 975 runtime_options.GetOrDefault(Opt::LargeObjectThreshold), 976 runtime_options.GetOrDefault(Opt::ParallelGCThreads), 977 runtime_options.GetOrDefault(Opt::ConcGCThreads), 978 runtime_options.Exists(Opt::LowMemoryMode), 979 runtime_options.GetOrDefault(Opt::LongPauseLogThreshold), 980 runtime_options.GetOrDefault(Opt::LongGCLogThreshold), 981 runtime_options.Exists(Opt::IgnoreMaxFootprint), 982 runtime_options.GetOrDefault(Opt::UseTLAB), 983 xgc_option.verify_pre_gc_heap_, 984 xgc_option.verify_pre_sweeping_heap_, 985 xgc_option.verify_post_gc_heap_, 986 xgc_option.verify_pre_gc_rosalloc_, 987 xgc_option.verify_pre_sweeping_rosalloc_, 988 xgc_option.verify_post_gc_rosalloc_, 989 xgc_option.gcstress_, 990 runtime_options.GetOrDefault(Opt::EnableHSpaceCompactForOOM), 991 runtime_options.GetOrDefault(Opt::HSpaceCompactForOOMMinIntervalsMs)); 992 ATRACE_END(); 993 994 if (!heap_->HasBootImageSpace() && !allow_dex_file_fallback_) { 995 LOG(ERROR) << "Dex file fallback disabled, cannot continue without image."; 996 ATRACE_END(); 997 return false; 998 } 999 1000 dump_gc_performance_on_shutdown_ = runtime_options.Exists(Opt::DumpGCPerformanceOnShutdown); 1001 1002 if (runtime_options.Exists(Opt::JdwpOptions)) { 1003 Dbg::ConfigureJdwp(runtime_options.GetOrDefault(Opt::JdwpOptions)); 1004 } 1005 1006 jit_options_.reset(jit::JitOptions::CreateFromRuntimeArguments(runtime_options)); 1007 if (IsAotCompiler()) { 1008 // If we are already the compiler at this point, we must be dex2oat. Don't create the jit in 1009 // this case. 1010 // If runtime_options doesn't have UseJIT set to true then CreateFromRuntimeArguments returns 1011 // null and we don't create the jit. 1012 jit_options_->SetUseJIT(false); 1013 } 1014 1015 // Allocate a global table of boxed lambda objects <-> closures. 1016 lambda_box_table_ = MakeUnique<lambda::BoxTable>(); 1017 1018 // Use MemMap arena pool for jit, malloc otherwise. Malloc arenas are faster to allocate but 1019 // can't be trimmed as easily. 1020 const bool use_malloc = IsAotCompiler(); 1021 arena_pool_.reset(new ArenaPool(use_malloc, false)); 1022 if (IsAotCompiler() && Is64BitInstructionSet(kRuntimeISA)) { 1023 // 4gb, no malloc. Explanation in header. 1024 low_4gb_arena_pool_.reset(new ArenaPool(false, 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 ATRACE_BEGIN("InitFromImage"); 1104 std::string error_msg; 1105 bool result = class_linker_->InitFromBootImage(&error_msg); 1106 ATRACE_END(); 1107 if (!result) { 1108 LOG(ERROR) << "Could not initialize from image: " << error_msg; 1109 return false; 1110 } 1111 if (kIsDebugBuild) { 1112 for (auto image_space : GetHeap()->GetBootImageSpaces()) { 1113 image_space->VerifyImageAllocations(); 1114 } 1115 } 1116 if (boot_class_path_string_.empty()) { 1117 // The bootclasspath is not explicitly specified: construct it from the loaded dex files. 1118 const std::vector<const DexFile*>& boot_class_path = GetClassLinker()->GetBootClassPath(); 1119 std::vector<std::string> dex_locations; 1120 dex_locations.reserve(boot_class_path.size()); 1121 for (const DexFile* dex_file : boot_class_path) { 1122 dex_locations.push_back(dex_file->GetLocation()); 1123 } 1124 boot_class_path_string_ = Join(dex_locations, ':'); 1125 } 1126 } else { 1127 std::vector<std::string> dex_filenames; 1128 Split(boot_class_path_string_, ':', &dex_filenames); 1129 1130 std::vector<std::string> dex_locations; 1131 if (!runtime_options.Exists(Opt::BootClassPathLocations)) { 1132 dex_locations = dex_filenames; 1133 } else { 1134 dex_locations = runtime_options.GetOrDefault(Opt::BootClassPathLocations); 1135 CHECK_EQ(dex_filenames.size(), dex_locations.size()); 1136 } 1137 1138 std::vector<std::unique_ptr<const DexFile>> boot_class_path; 1139 if (runtime_options.Exists(Opt::BootClassPathDexList)) { 1140 boot_class_path.swap(*runtime_options.GetOrDefault(Opt::BootClassPathDexList)); 1141 } else { 1142 OpenDexFiles(dex_filenames, 1143 dex_locations, 1144 runtime_options.GetOrDefault(Opt::Image), 1145 &boot_class_path); 1146 } 1147 instruction_set_ = runtime_options.GetOrDefault(Opt::ImageInstructionSet); 1148 std::string error_msg; 1149 if (!class_linker_->InitWithoutImage(std::move(boot_class_path), &error_msg)) { 1150 LOG(ERROR) << "Could not initialize without image: " << error_msg; 1151 return false; 1152 } 1153 1154 // TODO: Should we move the following to InitWithoutImage? 1155 SetInstructionSet(instruction_set_); 1156 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 1157 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 1158 if (!HasCalleeSaveMethod(type)) { 1159 SetCalleeSaveMethod(CreateCalleeSaveMethod(), type); 1160 } 1161 } 1162 } 1163 1164 CHECK(class_linker_ != nullptr); 1165 1166 verifier::MethodVerifier::Init(); 1167 1168 if (runtime_options.Exists(Opt::MethodTrace)) { 1169 trace_config_.reset(new TraceConfig()); 1170 trace_config_->trace_file = runtime_options.ReleaseOrDefault(Opt::MethodTraceFile); 1171 trace_config_->trace_file_size = runtime_options.ReleaseOrDefault(Opt::MethodTraceFileSize); 1172 trace_config_->trace_mode = Trace::TraceMode::kMethodTracing; 1173 trace_config_->trace_output_mode = runtime_options.Exists(Opt::MethodTraceStreaming) ? 1174 Trace::TraceOutputMode::kStreaming : 1175 Trace::TraceOutputMode::kFile; 1176 } 1177 1178 { 1179 auto&& profiler_options = runtime_options.ReleaseOrDefault(Opt::ProfilerOpts); 1180 profile_output_filename_ = profiler_options.output_file_name_; 1181 1182 // TODO: Don't do this, just change ProfilerOptions to include the output file name? 1183 ProfilerOptions other_options( 1184 profiler_options.enabled_, 1185 profiler_options.period_s_, 1186 profiler_options.duration_s_, 1187 profiler_options.interval_us_, 1188 profiler_options.backoff_coefficient_, 1189 profiler_options.start_immediately_, 1190 profiler_options.top_k_threshold_, 1191 profiler_options.top_k_change_threshold_, 1192 profiler_options.profile_type_, 1193 profiler_options.max_stack_depth_); 1194 1195 profiler_options_ = other_options; 1196 } 1197 1198 // TODO: move this to just be an Trace::Start argument 1199 Trace::SetDefaultClockSource(runtime_options.GetOrDefault(Opt::ProfileClock)); 1200 1201 // Pre-allocate an OutOfMemoryError for the double-OOME case. 1202 self->ThrowNewException("Ljava/lang/OutOfMemoryError;", 1203 "OutOfMemoryError thrown while trying to throw OutOfMemoryError; " 1204 "no stack trace available"); 1205 pre_allocated_OutOfMemoryError_ = GcRoot<mirror::Throwable>(self->GetException()); 1206 self->ClearException(); 1207 1208 // Pre-allocate a NoClassDefFoundError for the common case of failing to find a system class 1209 // ahead of checking the application's class loader. 1210 self->ThrowNewException("Ljava/lang/NoClassDefFoundError;", 1211 "Class not found using the boot class loader; no stack trace available"); 1212 pre_allocated_NoClassDefFoundError_ = GcRoot<mirror::Throwable>(self->GetException()); 1213 self->ClearException(); 1214 1215 // Look for a native bridge. 1216 // 1217 // The intended flow here is, in the case of a running system: 1218 // 1219 // Runtime::Init() (zygote): 1220 // LoadNativeBridge -> dlopen from cmd line parameter. 1221 // | 1222 // V 1223 // Runtime::Start() (zygote): 1224 // No-op wrt native bridge. 1225 // | 1226 // | start app 1227 // V 1228 // DidForkFromZygote(action) 1229 // action = kUnload -> dlclose native bridge. 1230 // action = kInitialize -> initialize library 1231 // 1232 // 1233 // The intended flow here is, in the case of a simple dalvikvm call: 1234 // 1235 // Runtime::Init(): 1236 // LoadNativeBridge -> dlopen from cmd line parameter. 1237 // | 1238 // V 1239 // Runtime::Start(): 1240 // DidForkFromZygote(kInitialize) -> try to initialize any native bridge given. 1241 // No-op wrt native bridge. 1242 { 1243 std::string native_bridge_file_name = runtime_options.ReleaseOrDefault(Opt::NativeBridge); 1244 is_native_bridge_loaded_ = LoadNativeBridge(native_bridge_file_name); 1245 } 1246 1247 VLOG(startup) << "Runtime::Init exiting"; 1248 1249 ATRACE_END(); 1250 1251 return true; 1252} 1253 1254void Runtime::InitNativeMethods() { 1255 VLOG(startup) << "Runtime::InitNativeMethods entering"; 1256 Thread* self = Thread::Current(); 1257 JNIEnv* env = self->GetJniEnv(); 1258 1259 // Must be in the kNative state for calling native methods (JNI_OnLoad code). 1260 CHECK_EQ(self->GetState(), kNative); 1261 1262 // First set up JniConstants, which is used by both the runtime's built-in native 1263 // methods and libcore. 1264 JniConstants::init(env); 1265 1266 // Then set up the native methods provided by the runtime itself. 1267 RegisterRuntimeNativeMethods(env); 1268 1269 // Initialize classes used in JNI. The initialization requires runtime native 1270 // methods to be loaded first. 1271 WellKnownClasses::Init(env); 1272 1273 // Then set up libjavacore / libopenjdk, which are just a regular JNI libraries with 1274 // a regular JNI_OnLoad. Most JNI libraries can just use System.loadLibrary, but 1275 // libcore can't because it's the library that implements System.loadLibrary! 1276 { 1277 std::string error_msg; 1278 if (!java_vm_->LoadNativeLibrary(env, "libjavacore.so", nullptr, 1279 /* is_shared_namespace */ false, 1280 nullptr, nullptr, &error_msg)) { 1281 LOG(FATAL) << "LoadNativeLibrary failed for \"libjavacore.so\": " << error_msg; 1282 } 1283 } 1284 { 1285 constexpr const char* kOpenJdkLibrary = kIsDebugBuild 1286 ? "libopenjdkd.so" 1287 : "libopenjdk.so"; 1288 std::string error_msg; 1289 if (!java_vm_->LoadNativeLibrary(env, kOpenJdkLibrary, nullptr, 1290 /* is_shared_namespace */ false, 1291 nullptr, nullptr, &error_msg)) { 1292 LOG(FATAL) << "LoadNativeLibrary failed for \"" << kOpenJdkLibrary << "\": " << error_msg; 1293 } 1294 } 1295 1296 // Initialize well known classes that may invoke runtime native methods. 1297 WellKnownClasses::LateInit(env); 1298 1299 VLOG(startup) << "Runtime::InitNativeMethods exiting"; 1300} 1301 1302void Runtime::InitThreadGroups(Thread* self) { 1303 JNIEnvExt* env = self->GetJniEnv(); 1304 ScopedJniEnvLocalRefState env_state(env); 1305 main_thread_group_ = 1306 env->NewGlobalRef(env->GetStaticObjectField( 1307 WellKnownClasses::java_lang_ThreadGroup, 1308 WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup)); 1309 CHECK(main_thread_group_ != nullptr || IsAotCompiler()); 1310 system_thread_group_ = 1311 env->NewGlobalRef(env->GetStaticObjectField( 1312 WellKnownClasses::java_lang_ThreadGroup, 1313 WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup)); 1314 CHECK(system_thread_group_ != nullptr || IsAotCompiler()); 1315} 1316 1317jobject Runtime::GetMainThreadGroup() const { 1318 CHECK(main_thread_group_ != nullptr || IsAotCompiler()); 1319 return main_thread_group_; 1320} 1321 1322jobject Runtime::GetSystemThreadGroup() const { 1323 CHECK(system_thread_group_ != nullptr || IsAotCompiler()); 1324 return system_thread_group_; 1325} 1326 1327jobject Runtime::GetSystemClassLoader() const { 1328 CHECK(system_class_loader_ != nullptr || IsAotCompiler()); 1329 return system_class_loader_; 1330} 1331 1332void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) { 1333 register_dalvik_system_DexFile(env); 1334 register_dalvik_system_VMDebug(env); 1335 register_dalvik_system_VMRuntime(env); 1336 register_dalvik_system_VMStack(env); 1337 register_dalvik_system_ZygoteHooks(env); 1338 register_java_lang_Class(env); 1339 register_java_lang_DexCache(env); 1340 register_java_lang_Object(env); 1341 register_java_lang_ref_FinalizerReference(env); 1342 register_java_lang_reflect_Array(env); 1343 register_java_lang_reflect_Constructor(env); 1344 register_java_lang_reflect_Field(env); 1345 register_java_lang_reflect_Method(env); 1346 register_java_lang_reflect_Proxy(env); 1347 register_java_lang_ref_Reference(env); 1348 register_java_lang_Runtime(env); 1349 register_java_lang_String(env); 1350 register_java_lang_StringFactory(env); 1351 register_java_lang_System(env); 1352 register_java_lang_Thread(env); 1353 register_java_lang_Throwable(env); 1354 register_java_lang_VMClassLoader(env); 1355 register_java_util_concurrent_atomic_AtomicLong(env); 1356 register_libcore_util_CharsetUtils(env); 1357 register_org_apache_harmony_dalvik_ddmc_DdmServer(env); 1358 register_org_apache_harmony_dalvik_ddmc_DdmVmInternal(env); 1359 register_sun_misc_Unsafe(env); 1360} 1361 1362void Runtime::DumpForSigQuit(std::ostream& os) { 1363 // Dumping for SIGQIT may cause deadlocks if the the debugger is active. b/26118154 1364 if (Dbg::IsDebuggerActive()) { 1365 LOG(INFO) << "Skipping DumpForSigQuit due to active debugger"; 1366 return; 1367 } 1368 GetClassLinker()->DumpForSigQuit(os); 1369 GetInternTable()->DumpForSigQuit(os); 1370 GetJavaVM()->DumpForSigQuit(os); 1371 GetHeap()->DumpForSigQuit(os); 1372 if (GetJit() != nullptr) { 1373 GetJit()->DumpForSigQuit(os); 1374 } else { 1375 os << "Running non JIT\n"; 1376 } 1377 TrackedAllocators::Dump(os); 1378 os << "\n"; 1379 1380 thread_list_->DumpForSigQuit(os); 1381 BaseMutex::DumpAll(os); 1382} 1383 1384void Runtime::DumpLockHolders(std::ostream& os) { 1385 uint64_t mutator_lock_owner = Locks::mutator_lock_->GetExclusiveOwnerTid(); 1386 pid_t thread_list_lock_owner = GetThreadList()->GetLockOwner(); 1387 pid_t classes_lock_owner = GetClassLinker()->GetClassesLockOwner(); 1388 pid_t dex_lock_owner = GetClassLinker()->GetDexLockOwner(); 1389 if ((thread_list_lock_owner | classes_lock_owner | dex_lock_owner) != 0) { 1390 os << "Mutator lock exclusive owner tid: " << mutator_lock_owner << "\n" 1391 << "ThreadList lock owner tid: " << thread_list_lock_owner << "\n" 1392 << "ClassLinker classes lock owner tid: " << classes_lock_owner << "\n" 1393 << "ClassLinker dex lock owner tid: " << dex_lock_owner << "\n"; 1394 } 1395} 1396 1397void Runtime::SetStatsEnabled(bool new_state) { 1398 Thread* self = Thread::Current(); 1399 MutexLock mu(self, *Locks::instrument_entrypoints_lock_); 1400 if (new_state == true) { 1401 GetStats()->Clear(~0); 1402 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1403 self->GetStats()->Clear(~0); 1404 if (stats_enabled_ != new_state) { 1405 GetInstrumentation()->InstrumentQuickAllocEntryPointsLocked(); 1406 } 1407 } else if (stats_enabled_ != new_state) { 1408 GetInstrumentation()->UninstrumentQuickAllocEntryPointsLocked(); 1409 } 1410 stats_enabled_ = new_state; 1411} 1412 1413void Runtime::ResetStats(int kinds) { 1414 GetStats()->Clear(kinds & 0xffff); 1415 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1416 Thread::Current()->GetStats()->Clear(kinds >> 16); 1417} 1418 1419int32_t Runtime::GetStat(int kind) { 1420 RuntimeStats* stats; 1421 if (kind < (1<<16)) { 1422 stats = GetStats(); 1423 } else { 1424 stats = Thread::Current()->GetStats(); 1425 kind >>= 16; 1426 } 1427 switch (kind) { 1428 case KIND_ALLOCATED_OBJECTS: 1429 return stats->allocated_objects; 1430 case KIND_ALLOCATED_BYTES: 1431 return stats->allocated_bytes; 1432 case KIND_FREED_OBJECTS: 1433 return stats->freed_objects; 1434 case KIND_FREED_BYTES: 1435 return stats->freed_bytes; 1436 case KIND_GC_INVOCATIONS: 1437 return stats->gc_for_alloc_count; 1438 case KIND_CLASS_INIT_COUNT: 1439 return stats->class_init_count; 1440 case KIND_CLASS_INIT_TIME: 1441 // Convert ns to us, reduce to 32 bits. 1442 return static_cast<int>(stats->class_init_time_ns / 1000); 1443 case KIND_EXT_ALLOCATED_OBJECTS: 1444 case KIND_EXT_ALLOCATED_BYTES: 1445 case KIND_EXT_FREED_OBJECTS: 1446 case KIND_EXT_FREED_BYTES: 1447 return 0; // backward compatibility 1448 default: 1449 LOG(FATAL) << "Unknown statistic " << kind; 1450 return -1; // unreachable 1451 } 1452} 1453 1454void Runtime::BlockSignals() { 1455 SignalSet signals; 1456 signals.Add(SIGPIPE); 1457 // SIGQUIT is used to dump the runtime's state (including stack traces). 1458 signals.Add(SIGQUIT); 1459 // SIGUSR1 is used to initiate a GC. 1460 signals.Add(SIGUSR1); 1461 signals.Block(); 1462} 1463 1464bool Runtime::AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group, 1465 bool create_peer) { 1466 return Thread::Attach(thread_name, as_daemon, thread_group, create_peer) != nullptr; 1467} 1468 1469void Runtime::DetachCurrentThread() { 1470 Thread* self = Thread::Current(); 1471 if (self == nullptr) { 1472 LOG(FATAL) << "attempting to detach thread that is not attached"; 1473 } 1474 if (self->HasManagedStack()) { 1475 LOG(FATAL) << *Thread::Current() << " attempting to detach while still running code"; 1476 } 1477 thread_list_->Unregister(self); 1478} 1479 1480mirror::Throwable* Runtime::GetPreAllocatedOutOfMemoryError() { 1481 mirror::Throwable* oome = pre_allocated_OutOfMemoryError_.Read(); 1482 if (oome == nullptr) { 1483 LOG(ERROR) << "Failed to return pre-allocated OOME"; 1484 } 1485 return oome; 1486} 1487 1488mirror::Throwable* Runtime::GetPreAllocatedNoClassDefFoundError() { 1489 mirror::Throwable* ncdfe = pre_allocated_NoClassDefFoundError_.Read(); 1490 if (ncdfe == nullptr) { 1491 LOG(ERROR) << "Failed to return pre-allocated NoClassDefFoundError"; 1492 } 1493 return ncdfe; 1494} 1495 1496void Runtime::VisitConstantRoots(RootVisitor* visitor) { 1497 // Visit the classes held as static in mirror classes, these can be visited concurrently and only 1498 // need to be visited once per GC since they never change. 1499 mirror::Class::VisitRoots(visitor); 1500 mirror::Constructor::VisitRoots(visitor); 1501 mirror::Reference::VisitRoots(visitor); 1502 mirror::Method::VisitRoots(visitor); 1503 mirror::StackTraceElement::VisitRoots(visitor); 1504 mirror::String::VisitRoots(visitor); 1505 mirror::Throwable::VisitRoots(visitor); 1506 mirror::Field::VisitRoots(visitor); 1507 // Visit all the primitive array types classes. 1508 mirror::PrimitiveArray<uint8_t>::VisitRoots(visitor); // BooleanArray 1509 mirror::PrimitiveArray<int8_t>::VisitRoots(visitor); // ByteArray 1510 mirror::PrimitiveArray<uint16_t>::VisitRoots(visitor); // CharArray 1511 mirror::PrimitiveArray<double>::VisitRoots(visitor); // DoubleArray 1512 mirror::PrimitiveArray<float>::VisitRoots(visitor); // FloatArray 1513 mirror::PrimitiveArray<int32_t>::VisitRoots(visitor); // IntArray 1514 mirror::PrimitiveArray<int64_t>::VisitRoots(visitor); // LongArray 1515 mirror::PrimitiveArray<int16_t>::VisitRoots(visitor); // ShortArray 1516 // Visiting the roots of these ArtMethods is not currently required since all the GcRoots are 1517 // null. 1518 BufferedRootVisitor<16> buffered_visitor(visitor, RootInfo(kRootVMInternal)); 1519 const size_t pointer_size = GetClassLinker()->GetImagePointerSize(); 1520 if (HasResolutionMethod()) { 1521 resolution_method_->VisitRoots(buffered_visitor, pointer_size); 1522 } 1523 if (HasImtConflictMethod()) { 1524 imt_conflict_method_->VisitRoots(buffered_visitor, pointer_size); 1525 } 1526 if (imt_unimplemented_method_ != nullptr) { 1527 imt_unimplemented_method_->VisitRoots(buffered_visitor, pointer_size); 1528 } 1529 for (size_t i = 0; i < kLastCalleeSaveType; ++i) { 1530 auto* m = reinterpret_cast<ArtMethod*>(callee_save_methods_[i]); 1531 if (m != nullptr) { 1532 m->VisitRoots(buffered_visitor, pointer_size); 1533 } 1534 } 1535} 1536 1537void Runtime::VisitConcurrentRoots(RootVisitor* visitor, VisitRootFlags flags) { 1538 intern_table_->VisitRoots(visitor, flags); 1539 class_linker_->VisitRoots(visitor, flags); 1540 heap_->VisitAllocationRecords(visitor); 1541 if ((flags & kVisitRootFlagNewRoots) == 0) { 1542 // Guaranteed to have no new roots in the constant roots. 1543 VisitConstantRoots(visitor); 1544 } 1545 Dbg::VisitRoots(visitor); 1546} 1547 1548void Runtime::VisitTransactionRoots(RootVisitor* visitor) { 1549 if (preinitialization_transaction_ != nullptr) { 1550 preinitialization_transaction_->VisitRoots(visitor); 1551 } 1552} 1553 1554void Runtime::VisitNonThreadRoots(RootVisitor* visitor) { 1555 java_vm_->VisitRoots(visitor); 1556 sentinel_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1557 pre_allocated_OutOfMemoryError_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1558 pre_allocated_NoClassDefFoundError_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1559 verifier::MethodVerifier::VisitStaticRoots(visitor); 1560 VisitTransactionRoots(visitor); 1561} 1562 1563void Runtime::VisitNonConcurrentRoots(RootVisitor* visitor) { 1564 thread_list_->VisitRoots(visitor); 1565 VisitNonThreadRoots(visitor); 1566} 1567 1568void Runtime::VisitThreadRoots(RootVisitor* visitor) { 1569 thread_list_->VisitRoots(visitor); 1570} 1571 1572size_t Runtime::FlipThreadRoots(Closure* thread_flip_visitor, Closure* flip_callback, 1573 gc::collector::GarbageCollector* collector) { 1574 return thread_list_->FlipThreadRoots(thread_flip_visitor, flip_callback, collector); 1575} 1576 1577void Runtime::VisitRoots(RootVisitor* visitor, VisitRootFlags flags) { 1578 VisitNonConcurrentRoots(visitor); 1579 VisitConcurrentRoots(visitor, flags); 1580} 1581 1582void Runtime::VisitImageRoots(RootVisitor* visitor) { 1583 for (auto* space : GetHeap()->GetContinuousSpaces()) { 1584 if (space->IsImageSpace()) { 1585 auto* image_space = space->AsImageSpace(); 1586 const auto& image_header = image_space->GetImageHeader(); 1587 for (size_t i = 0; i < ImageHeader::kImageRootsMax; ++i) { 1588 auto* obj = image_header.GetImageRoot(static_cast<ImageHeader::ImageRoot>(i)); 1589 if (obj != nullptr) { 1590 auto* after_obj = obj; 1591 visitor->VisitRoot(&after_obj, RootInfo(kRootStickyClass)); 1592 CHECK_EQ(after_obj, obj); 1593 } 1594 } 1595 } 1596 } 1597} 1598 1599ArtMethod* Runtime::CreateImtConflictMethod() { 1600 auto* method = Runtime::Current()->GetClassLinker()->CreateRuntimeMethod(); 1601 // When compiling, the code pointer will get set later when the image is loaded. 1602 if (IsAotCompiler()) { 1603 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1604 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1605 } else { 1606 method->SetEntryPointFromQuickCompiledCode(GetQuickImtConflictStub()); 1607 } 1608 return method; 1609} 1610 1611void Runtime::SetImtConflictMethod(ArtMethod* method) { 1612 CHECK(method != nullptr); 1613 CHECK(method->IsRuntimeMethod()); 1614 imt_conflict_method_ = method; 1615} 1616 1617ArtMethod* Runtime::CreateResolutionMethod() { 1618 auto* method = Runtime::Current()->GetClassLinker()->CreateRuntimeMethod(); 1619 // When compiling, the code pointer will get set later when the image is loaded. 1620 if (IsAotCompiler()) { 1621 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1622 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1623 } else { 1624 method->SetEntryPointFromQuickCompiledCode(GetQuickResolutionStub()); 1625 } 1626 return method; 1627} 1628 1629ArtMethod* Runtime::CreateCalleeSaveMethod() { 1630 auto* method = Runtime::Current()->GetClassLinker()->CreateRuntimeMethod(); 1631 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1632 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1633 DCHECK_NE(instruction_set_, kNone); 1634 DCHECK(method->IsRuntimeMethod()); 1635 return method; 1636} 1637 1638void Runtime::DisallowNewSystemWeaks() { 1639 CHECK(!kUseReadBarrier); 1640 monitor_list_->DisallowNewMonitors(); 1641 intern_table_->ChangeWeakRootState(gc::kWeakRootStateNoReadsOrWrites); 1642 java_vm_->DisallowNewWeakGlobals(); 1643 heap_->DisallowNewAllocationRecords(); 1644 lambda_box_table_->DisallowNewWeakBoxedLambdas(); 1645} 1646 1647void Runtime::AllowNewSystemWeaks() { 1648 CHECK(!kUseReadBarrier); 1649 monitor_list_->AllowNewMonitors(); 1650 intern_table_->ChangeWeakRootState(gc::kWeakRootStateNormal); // TODO: Do this in the sweeping. 1651 java_vm_->AllowNewWeakGlobals(); 1652 heap_->AllowNewAllocationRecords(); 1653 lambda_box_table_->AllowNewWeakBoxedLambdas(); 1654} 1655 1656void Runtime::BroadcastForNewSystemWeaks() { 1657 // This is used for the read barrier case that uses the thread-local 1658 // Thread::GetWeakRefAccessEnabled() flag. 1659 CHECK(kUseReadBarrier); 1660 monitor_list_->BroadcastForNewMonitors(); 1661 intern_table_->BroadcastForNewInterns(); 1662 java_vm_->BroadcastForNewWeakGlobals(); 1663 heap_->BroadcastForNewAllocationRecords(); 1664 lambda_box_table_->BroadcastForNewWeakBoxedLambdas(); 1665} 1666 1667void Runtime::SetInstructionSet(InstructionSet instruction_set) { 1668 instruction_set_ = instruction_set; 1669 if ((instruction_set_ == kThumb2) || (instruction_set_ == kArm)) { 1670 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1671 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1672 callee_save_method_frame_infos_[i] = arm::ArmCalleeSaveMethodFrameInfo(type); 1673 } 1674 } else if (instruction_set_ == kMips) { 1675 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1676 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1677 callee_save_method_frame_infos_[i] = mips::MipsCalleeSaveMethodFrameInfo(type); 1678 } 1679 } else if (instruction_set_ == kMips64) { 1680 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1681 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1682 callee_save_method_frame_infos_[i] = mips64::Mips64CalleeSaveMethodFrameInfo(type); 1683 } 1684 } else if (instruction_set_ == kX86) { 1685 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1686 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1687 callee_save_method_frame_infos_[i] = x86::X86CalleeSaveMethodFrameInfo(type); 1688 } 1689 } else if (instruction_set_ == kX86_64) { 1690 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1691 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1692 callee_save_method_frame_infos_[i] = x86_64::X86_64CalleeSaveMethodFrameInfo(type); 1693 } 1694 } else if (instruction_set_ == kArm64) { 1695 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1696 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1697 callee_save_method_frame_infos_[i] = arm64::Arm64CalleeSaveMethodFrameInfo(type); 1698 } 1699 } else { 1700 UNIMPLEMENTED(FATAL) << instruction_set_; 1701 } 1702} 1703 1704void Runtime::SetCalleeSaveMethod(ArtMethod* method, CalleeSaveType type) { 1705 DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType)); 1706 CHECK(method != nullptr); 1707 callee_save_methods_[type] = reinterpret_cast<uintptr_t>(method); 1708} 1709 1710void Runtime::RegisterAppInfo(const std::vector<std::string>& code_paths, 1711 const std::string& profile_output_filename) { 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, code_paths); 1735} 1736 1737// Transaction support. 1738void Runtime::EnterTransactionMode(Transaction* transaction) { 1739 DCHECK(IsAotCompiler()); 1740 DCHECK(transaction != nullptr); 1741 DCHECK(!IsActiveTransaction()); 1742 preinitialization_transaction_ = transaction; 1743} 1744 1745void Runtime::ExitTransactionMode() { 1746 DCHECK(IsAotCompiler()); 1747 DCHECK(IsActiveTransaction()); 1748 preinitialization_transaction_ = nullptr; 1749} 1750 1751bool Runtime::IsTransactionAborted() const { 1752 if (!IsActiveTransaction()) { 1753 return false; 1754 } else { 1755 DCHECK(IsAotCompiler()); 1756 return preinitialization_transaction_->IsAborted(); 1757 } 1758} 1759 1760void Runtime::AbortTransactionAndThrowAbortError(Thread* self, const std::string& abort_message) { 1761 DCHECK(IsAotCompiler()); 1762 DCHECK(IsActiveTransaction()); 1763 // Throwing an exception may cause its class initialization. If we mark the transaction 1764 // aborted before that, we may warn with a false alarm. Throwing the exception before 1765 // marking the transaction aborted avoids that. 1766 preinitialization_transaction_->ThrowAbortError(self, &abort_message); 1767 preinitialization_transaction_->Abort(abort_message); 1768} 1769 1770void Runtime::ThrowTransactionAbortError(Thread* self) { 1771 DCHECK(IsAotCompiler()); 1772 DCHECK(IsActiveTransaction()); 1773 // Passing nullptr means we rethrow an exception with the earlier transaction abort message. 1774 preinitialization_transaction_->ThrowAbortError(self, nullptr); 1775} 1776 1777void Runtime::RecordWriteFieldBoolean(mirror::Object* obj, MemberOffset field_offset, 1778 uint8_t value, bool is_volatile) const { 1779 DCHECK(IsAotCompiler()); 1780 DCHECK(IsActiveTransaction()); 1781 preinitialization_transaction_->RecordWriteFieldBoolean(obj, field_offset, value, is_volatile); 1782} 1783 1784void Runtime::RecordWriteFieldByte(mirror::Object* obj, MemberOffset field_offset, 1785 int8_t value, bool is_volatile) const { 1786 DCHECK(IsAotCompiler()); 1787 DCHECK(IsActiveTransaction()); 1788 preinitialization_transaction_->RecordWriteFieldByte(obj, field_offset, value, is_volatile); 1789} 1790 1791void Runtime::RecordWriteFieldChar(mirror::Object* obj, MemberOffset field_offset, 1792 uint16_t value, bool is_volatile) const { 1793 DCHECK(IsAotCompiler()); 1794 DCHECK(IsActiveTransaction()); 1795 preinitialization_transaction_->RecordWriteFieldChar(obj, field_offset, value, is_volatile); 1796} 1797 1798void Runtime::RecordWriteFieldShort(mirror::Object* obj, MemberOffset field_offset, 1799 int16_t value, bool is_volatile) const { 1800 DCHECK(IsAotCompiler()); 1801 DCHECK(IsActiveTransaction()); 1802 preinitialization_transaction_->RecordWriteFieldShort(obj, field_offset, value, is_volatile); 1803} 1804 1805void Runtime::RecordWriteField32(mirror::Object* obj, MemberOffset field_offset, 1806 uint32_t value, bool is_volatile) const { 1807 DCHECK(IsAotCompiler()); 1808 DCHECK(IsActiveTransaction()); 1809 preinitialization_transaction_->RecordWriteField32(obj, field_offset, value, is_volatile); 1810} 1811 1812void Runtime::RecordWriteField64(mirror::Object* obj, MemberOffset field_offset, 1813 uint64_t value, bool is_volatile) const { 1814 DCHECK(IsAotCompiler()); 1815 DCHECK(IsActiveTransaction()); 1816 preinitialization_transaction_->RecordWriteField64(obj, field_offset, value, is_volatile); 1817} 1818 1819void Runtime::RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset, 1820 mirror::Object* value, bool is_volatile) const { 1821 DCHECK(IsAotCompiler()); 1822 DCHECK(IsActiveTransaction()); 1823 preinitialization_transaction_->RecordWriteFieldReference(obj, field_offset, value, is_volatile); 1824} 1825 1826void Runtime::RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const { 1827 DCHECK(IsAotCompiler()); 1828 DCHECK(IsActiveTransaction()); 1829 preinitialization_transaction_->RecordWriteArray(array, index, value); 1830} 1831 1832void Runtime::RecordStrongStringInsertion(mirror::String* s) const { 1833 DCHECK(IsAotCompiler()); 1834 DCHECK(IsActiveTransaction()); 1835 preinitialization_transaction_->RecordStrongStringInsertion(s); 1836} 1837 1838void Runtime::RecordWeakStringInsertion(mirror::String* s) const { 1839 DCHECK(IsAotCompiler()); 1840 DCHECK(IsActiveTransaction()); 1841 preinitialization_transaction_->RecordWeakStringInsertion(s); 1842} 1843 1844void Runtime::RecordStrongStringRemoval(mirror::String* s) const { 1845 DCHECK(IsAotCompiler()); 1846 DCHECK(IsActiveTransaction()); 1847 preinitialization_transaction_->RecordStrongStringRemoval(s); 1848} 1849 1850void Runtime::RecordWeakStringRemoval(mirror::String* s) const { 1851 DCHECK(IsAotCompiler()); 1852 DCHECK(IsActiveTransaction()); 1853 preinitialization_transaction_->RecordWeakStringRemoval(s); 1854} 1855 1856void Runtime::SetFaultMessage(const std::string& message) { 1857 MutexLock mu(Thread::Current(), fault_message_lock_); 1858 fault_message_ = message; 1859} 1860 1861void Runtime::AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* argv) 1862 const { 1863 if (GetInstrumentation()->InterpretOnly() || UseJit()) { 1864 argv->push_back("--compiler-filter=interpret-only"); 1865 } 1866 1867 // Make the dex2oat instruction set match that of the launching runtime. If we have multiple 1868 // architecture support, dex2oat may be compiled as a different instruction-set than that 1869 // currently being executed. 1870 std::string instruction_set("--instruction-set="); 1871 instruction_set += GetInstructionSetString(kRuntimeISA); 1872 argv->push_back(instruction_set); 1873 1874 std::unique_ptr<const InstructionSetFeatures> features(InstructionSetFeatures::FromCppDefines()); 1875 std::string feature_string("--instruction-set-features="); 1876 feature_string += features->GetFeatureString(); 1877 argv->push_back(feature_string); 1878} 1879 1880void Runtime::CreateJit() { 1881 CHECK(!IsAotCompiler()); 1882 if (GetInstrumentation()->IsForcedInterpretOnly()) { 1883 // Don't create JIT if forced interpret only. 1884 return; 1885 } 1886 std::string error_msg; 1887 jit_.reset(jit::Jit::Create(jit_options_.get(), &error_msg)); 1888 if (jit_.get() != nullptr) { 1889 compiler_callbacks_ = jit_->GetCompilerCallbacks(); 1890 jit_->CreateInstrumentationCache(jit_options_->GetCompileThreshold(), 1891 jit_options_->GetWarmupThreshold(), 1892 jit_options_->GetOsrThreshold()); 1893 jit_->CreateThreadPool(); 1894 1895 // Notify native debugger about the classes already loaded before the creation of the jit. 1896 jit_->DumpTypeInfoForLoadedTypes(GetClassLinker()); 1897 } else { 1898 LOG(WARNING) << "Failed to create JIT " << error_msg; 1899 } 1900} 1901 1902bool Runtime::CanRelocate() const { 1903 return !IsAotCompiler() || compiler_callbacks_->IsRelocationPossible(); 1904} 1905 1906bool Runtime::IsCompilingBootImage() const { 1907 return IsCompiler() && compiler_callbacks_->IsBootImage(); 1908} 1909 1910void Runtime::SetResolutionMethod(ArtMethod* method) { 1911 CHECK(method != nullptr); 1912 CHECK(method->IsRuntimeMethod()) << method; 1913 resolution_method_ = method; 1914} 1915 1916void Runtime::SetImtUnimplementedMethod(ArtMethod* method) { 1917 CHECK(method != nullptr); 1918 CHECK(method->IsRuntimeMethod()); 1919 imt_unimplemented_method_ = method; 1920} 1921 1922bool Runtime::IsVerificationEnabled() const { 1923 return verify_ == verifier::VerifyMode::kEnable || 1924 verify_ == verifier::VerifyMode::kSoftFail; 1925} 1926 1927bool Runtime::IsVerificationSoftFail() const { 1928 return verify_ == verifier::VerifyMode::kSoftFail; 1929} 1930 1931LinearAlloc* Runtime::CreateLinearAlloc() { 1932 // For 64 bit compilers, it needs to be in low 4GB in the case where we are cross compiling for a 1933 // 32 bit target. In this case, we have 32 bit pointers in the dex cache arrays which can't hold 1934 // when we have 64 bit ArtMethod pointers. 1935 return (IsAotCompiler() && Is64BitInstructionSet(kRuntimeISA)) 1936 ? new LinearAlloc(low_4gb_arena_pool_.get()) 1937 : new LinearAlloc(arena_pool_.get()); 1938} 1939 1940double Runtime::GetHashTableMinLoadFactor() const { 1941 return is_low_memory_mode_ ? kLowMemoryMinLoadFactor : kNormalMinLoadFactor; 1942} 1943 1944double Runtime::GetHashTableMaxLoadFactor() const { 1945 return is_low_memory_mode_ ? kLowMemoryMaxLoadFactor : kNormalMaxLoadFactor; 1946} 1947 1948} // namespace art 1949