runtime.cc revision 40da286d3207d88ed8ff3f5caac4873874603428
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#endif 24 25#include <signal.h> 26#include <sys/syscall.h> 27#include <valgrind.h> 28 29#include <cstdio> 30#include <cstdlib> 31#include <limits> 32#include <memory_representation.h> 33#include <vector> 34#include <fcntl.h> 35 36#include "JniConstants.h" 37#include "ScopedLocalRef.h" 38#include "arch/arm/quick_method_frame_info_arm.h" 39#include "arch/arm/registers_arm.h" 40#include "arch/arm64/quick_method_frame_info_arm64.h" 41#include "arch/arm64/registers_arm64.h" 42#include "arch/instruction_set_features.h" 43#include "arch/mips/quick_method_frame_info_mips.h" 44#include "arch/mips/registers_mips.h" 45#include "arch/mips64/quick_method_frame_info_mips64.h" 46#include "arch/mips64/registers_mips64.h" 47#include "arch/x86/quick_method_frame_info_x86.h" 48#include "arch/x86/registers_x86.h" 49#include "arch/x86_64/quick_method_frame_info_x86_64.h" 50#include "arch/x86_64/registers_x86_64.h" 51#include "art_field-inl.h" 52#include "asm_support.h" 53#include "atomic.h" 54#include "base/arena_allocator.h" 55#include "base/dumpable.h" 56#include "base/unix_file/fd_file.h" 57#include "class_linker-inl.h" 58#include "compiler_callbacks.h" 59#include "debugger.h" 60#include "elf_file.h" 61#include "entrypoints/runtime_asm_entrypoints.h" 62#include "fault_handler.h" 63#include "gc/accounting/card_table-inl.h" 64#include "gc/heap.h" 65#include "gc/space/image_space.h" 66#include "gc/space/space-inl.h" 67#include "handle_scope-inl.h" 68#include "image.h" 69#include "instrumentation.h" 70#include "intern_table.h" 71#include "interpreter/interpreter.h" 72#include "jit/jit.h" 73#include "jni_internal.h" 74#include "linear_alloc.h" 75#include "mirror/array.h" 76#include "mirror/art_method-inl.h" 77#include "mirror/class-inl.h" 78#include "mirror/class_loader.h" 79#include "mirror/field.h" 80#include "mirror/stack_trace_element.h" 81#include "mirror/throwable.h" 82#include "monitor.h" 83#include "native/dalvik_system_DexFile.h" 84#include "native/dalvik_system_VMDebug.h" 85#include "native/dalvik_system_VMRuntime.h" 86#include "native/dalvik_system_VMStack.h" 87#include "native/dalvik_system_ZygoteHooks.h" 88#include "native/java_lang_Class.h" 89#include "native/java_lang_DexCache.h" 90#include "native/java_lang_Object.h" 91#include "native/java_lang_Runtime.h" 92#include "native/java_lang_String.h" 93#include "native/java_lang_System.h" 94#include "native/java_lang_Thread.h" 95#include "native/java_lang_Throwable.h" 96#include "native/java_lang_VMClassLoader.h" 97#include "native/java_lang_ref_FinalizerReference.h" 98#include "native/java_lang_ref_Reference.h" 99#include "native/java_lang_reflect_Array.h" 100#include "native/java_lang_reflect_Constructor.h" 101#include "native/java_lang_reflect_Field.h" 102#include "native/java_lang_reflect_Method.h" 103#include "native/java_lang_reflect_Proxy.h" 104#include "native/java_util_concurrent_atomic_AtomicLong.h" 105#include "native/org_apache_harmony_dalvik_ddmc_DdmServer.h" 106#include "native/org_apache_harmony_dalvik_ddmc_DdmVmInternal.h" 107#include "native/sun_misc_Unsafe.h" 108#include "native_bridge_art_interface.h" 109#include "oat_file.h" 110#include "os.h" 111#include "parsed_options.h" 112#include "profiler.h" 113#include "quick/quick_method_frame_info.h" 114#include "reflection.h" 115#include "runtime_options.h" 116#include "ScopedLocalRef.h" 117#include "scoped_thread_state_change.h" 118#include "sigchain.h" 119#include "signal_catcher.h" 120#include "signal_set.h" 121#include "thread.h" 122#include "thread_list.h" 123#include "trace.h" 124#include "transaction.h" 125#include "verifier/method_verifier.h" 126#include "well_known_classes.h" 127 128namespace art { 129 130// If a signal isn't handled properly, enable a handler that attempts to dump the Java stack. 131static constexpr bool kEnableJavaStackTraceHandler = false; 132Runtime* Runtime::instance_ = nullptr; 133 134struct TraceConfig { 135 Trace::TraceMode trace_mode; 136 Trace::TraceOutputMode trace_output_mode; 137 std::string trace_file; 138 size_t trace_file_size; 139}; 140 141Runtime::Runtime() 142 : instruction_set_(kNone), 143 compiler_callbacks_(nullptr), 144 is_zygote_(false), 145 must_relocate_(false), 146 is_concurrent_gc_enabled_(true), 147 is_explicit_gc_disabled_(false), 148 dex2oat_enabled_(true), 149 image_dex2oat_enabled_(true), 150 default_stack_size_(0), 151 heap_(nullptr), 152 max_spins_before_thin_lock_inflation_(Monitor::kDefaultMaxSpinsBeforeThinLockInflation), 153 monitor_list_(nullptr), 154 monitor_pool_(nullptr), 155 thread_list_(nullptr), 156 intern_table_(nullptr), 157 class_linker_(nullptr), 158 signal_catcher_(nullptr), 159 java_vm_(nullptr), 160 fault_message_lock_("Fault message lock"), 161 fault_message_(""), 162 threads_being_born_(0), 163 shutdown_cond_(new ConditionVariable("Runtime shutdown", *Locks::runtime_shutdown_lock_)), 164 shutting_down_(false), 165 shutting_down_started_(false), 166 started_(false), 167 finished_starting_(false), 168 vfprintf_(nullptr), 169 exit_(nullptr), 170 abort_(nullptr), 171 stats_enabled_(false), 172 running_on_valgrind_(RUNNING_ON_VALGRIND > 0), 173 profiler_started_(false), 174 instrumentation_(), 175 main_thread_group_(nullptr), 176 system_thread_group_(nullptr), 177 system_class_loader_(nullptr), 178 dump_gc_performance_on_shutdown_(false), 179 preinitialization_transaction_(nullptr), 180 verify_(false), 181 allow_dex_file_fallback_(true), 182 target_sdk_version_(0), 183 implicit_null_checks_(false), 184 implicit_so_checks_(false), 185 implicit_suspend_checks_(false), 186 is_native_bridge_loaded_(false), 187 zygote_max_failed_boots_(0) { 188 CheckAsmSupportOffsetsAndSizes(); 189} 190 191Runtime::~Runtime() { 192 if (is_native_bridge_loaded_) { 193 UnloadNativeBridge(); 194 } 195 if (dump_gc_performance_on_shutdown_) { 196 // This can't be called from the Heap destructor below because it 197 // could call RosAlloc::InspectAll() which needs the thread_list 198 // to be still alive. 199 heap_->DumpGcPerformanceInfo(LOG(INFO)); 200 } 201 202 Thread* self = Thread::Current(); 203 const bool attach_shutdown_thread = self == nullptr; 204 if (attach_shutdown_thread) { 205 CHECK(AttachCurrentThread("Shutdown thread", false, nullptr, false)); 206 self = Thread::Current(); 207 } else { 208 LOG(WARNING) << "Current thread not detached in Runtime shutdown"; 209 } 210 211 { 212 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 213 shutting_down_started_ = true; 214 while (threads_being_born_ > 0) { 215 shutdown_cond_->Wait(self); 216 } 217 shutting_down_ = true; 218 } 219 // Shutdown and wait for the daemons. 220 CHECK(self != nullptr); 221 if (IsFinishedStarting()) { 222 self->ClearException(); 223 self->GetJniEnv()->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 224 WellKnownClasses::java_lang_Daemons_stop); 225 } 226 if (attach_shutdown_thread) { 227 DetachCurrentThread(); 228 self = nullptr; 229 } 230 231 // Shut down background profiler before the runtime exits. 232 if (profiler_started_) { 233 BackgroundMethodSamplingProfiler::Shutdown(); 234 } 235 236 Trace::Shutdown(); 237 238 // Make sure to let the GC complete if it is running. 239 heap_->WaitForGcToComplete(gc::kGcCauseBackground, self); 240 heap_->DeleteThreadPool(); 241 if (jit_.get() != nullptr) { 242 VLOG(jit) << "Deleting jit thread pool"; 243 // Delete thread pool before the thread list since we don't want to wait forever on the 244 // JIT compiler threads. 245 jit_->DeleteThreadPool(); 246 } 247 248 // Make sure our internal threads are dead before we start tearing down things they're using. 249 Dbg::StopJdwp(); 250 delete signal_catcher_; 251 252 // Make sure all other non-daemon threads have terminated, and all daemon threads are suspended. 253 delete thread_list_; 254 255 // Delete the JIT after thread list to ensure that there is no remaining threads which could be 256 // accessing the instrumentation when we delete it. 257 if (jit_.get() != nullptr) { 258 VLOG(jit) << "Deleting jit"; 259 jit_.reset(nullptr); 260 } 261 linear_alloc_.reset(); 262 arena_pool_.reset(); 263 low_4gb_arena_pool_.reset(); 264 265 // Shutdown the fault manager if it was initialized. 266 fault_manager.Shutdown(); 267 268 delete monitor_list_; 269 delete monitor_pool_; 270 delete class_linker_; 271 delete heap_; 272 delete intern_table_; 273 delete java_vm_; 274 Thread::Shutdown(); 275 QuasiAtomic::Shutdown(); 276 verifier::MethodVerifier::Shutdown(); 277 MemMap::Shutdown(); 278 // TODO: acquire a static mutex on Runtime to avoid racing. 279 CHECK(instance_ == nullptr || instance_ == this); 280 instance_ = nullptr; 281} 282 283struct AbortState { 284 void Dump(std::ostream& os) const { 285 if (gAborting > 1) { 286 os << "Runtime aborting --- recursively, so no thread-specific detail!\n"; 287 return; 288 } 289 gAborting++; 290 os << "Runtime aborting...\n"; 291 if (Runtime::Current() == NULL) { 292 os << "(Runtime does not yet exist!)\n"; 293 return; 294 } 295 Thread* self = Thread::Current(); 296 if (self == nullptr) { 297 os << "(Aborting thread was not attached to runtime!)\n"; 298 DumpKernelStack(os, GetTid(), " kernel: ", false); 299 DumpNativeStack(os, GetTid(), " native: ", nullptr); 300 } else { 301 os << "Aborting thread:\n"; 302 if (Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)) { 303 DumpThread(os, self); 304 } else { 305 if (Locks::mutator_lock_->SharedTryLock(self)) { 306 DumpThread(os, self); 307 Locks::mutator_lock_->SharedUnlock(self); 308 } 309 } 310 } 311 DumpAllThreads(os, self); 312 } 313 314 // No thread-safety analysis as we do explicitly test for holding the mutator lock. 315 void DumpThread(std::ostream& os, Thread* self) const NO_THREAD_SAFETY_ANALYSIS { 316 DCHECK(Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)); 317 self->Dump(os); 318 if (self->IsExceptionPending()) { 319 mirror::Throwable* exception = self->GetException(); 320 os << "Pending exception " << exception->Dump(); 321 } 322 } 323 324 void DumpAllThreads(std::ostream& os, Thread* self) const { 325 Runtime* runtime = Runtime::Current(); 326 if (runtime != nullptr) { 327 ThreadList* thread_list = runtime->GetThreadList(); 328 if (thread_list != nullptr) { 329 bool tll_already_held = Locks::thread_list_lock_->IsExclusiveHeld(self); 330 bool ml_already_held = Locks::mutator_lock_->IsSharedHeld(self); 331 if (!tll_already_held || !ml_already_held) { 332 os << "Dumping all threads without appropriate locks held:" 333 << (!tll_already_held ? " thread list lock" : "") 334 << (!ml_already_held ? " mutator lock" : "") 335 << "\n"; 336 } 337 os << "All threads:\n"; 338 thread_list->Dump(os); 339 } 340 } 341 } 342}; 343 344void Runtime::Abort() { 345 gAborting++; // set before taking any locks 346 347 // Ensure that we don't have multiple threads trying to abort at once, 348 // which would result in significantly worse diagnostics. 349 MutexLock mu(Thread::Current(), *Locks::abort_lock_); 350 351 // Get any pending output out of the way. 352 fflush(NULL); 353 354 // Many people have difficulty distinguish aborts from crashes, 355 // so be explicit. 356 AbortState state; 357 LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state); 358 359 // Call the abort hook if we have one. 360 if (Runtime::Current() != NULL && Runtime::Current()->abort_ != NULL) { 361 LOG(INTERNAL_FATAL) << "Calling abort hook..."; 362 Runtime::Current()->abort_(); 363 // notreached 364 LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!"; 365 } 366 367#if defined(__GLIBC__) 368 // TODO: we ought to be able to use pthread_kill(3) here (or abort(3), 369 // which POSIX defines in terms of raise(3), which POSIX defines in terms 370 // of pthread_kill(3)). On Linux, though, libcorkscrew can't unwind through 371 // libpthread, which means the stacks we dump would be useless. Calling 372 // tgkill(2) directly avoids that. 373 syscall(__NR_tgkill, getpid(), GetTid(), SIGABRT); 374 // TODO: LLVM installs it's own SIGABRT handler so exit to be safe... Can we disable that in LLVM? 375 // If not, we could use sigaction(3) before calling tgkill(2) and lose this call to exit(3). 376 exit(1); 377#else 378 abort(); 379#endif 380 // notreached 381} 382 383void Runtime::PreZygoteFork() { 384 heap_->PreZygoteFork(); 385} 386 387void Runtime::CallExitHook(jint status) { 388 if (exit_ != NULL) { 389 ScopedThreadStateChange tsc(Thread::Current(), kNative); 390 exit_(status); 391 LOG(WARNING) << "Exit hook returned instead of exiting!"; 392 } 393} 394 395void Runtime::SweepSystemWeaks(IsMarkedCallback* visitor, void* arg) { 396 GetInternTable()->SweepInternTableWeaks(visitor, arg); 397 GetMonitorList()->SweepMonitorList(visitor, arg); 398 GetJavaVM()->SweepJniWeakGlobals(visitor, arg); 399} 400 401bool Runtime::Create(const RuntimeOptions& options, bool ignore_unrecognized) { 402 // TODO: acquire a static mutex on Runtime to avoid racing. 403 if (Runtime::instance_ != NULL) { 404 return false; 405 } 406 InitLogging(NULL); // Calls Locks::Init() as a side effect. 407 instance_ = new Runtime; 408 if (!instance_->Init(options, ignore_unrecognized)) { 409 // TODO: Currently deleting the instance will abort the runtime on destruction. Now This will 410 // leak memory, instead. Fix the destructor. b/19100793. 411 // delete instance_; 412 instance_ = NULL; 413 return false; 414 } 415 return true; 416} 417 418static jobject CreateSystemClassLoader(Runtime* runtime) { 419 if (runtime->IsAotCompiler() && !runtime->GetCompilerCallbacks()->IsBootImage()) { 420 return nullptr; 421 } 422 423 ScopedObjectAccess soa(Thread::Current()); 424 ClassLinker* cl = Runtime::Current()->GetClassLinker(); 425 426 StackHandleScope<2> hs(soa.Self()); 427 Handle<mirror::Class> class_loader_class( 428 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader))); 429 CHECK(cl->EnsureInitialized(soa.Self(), class_loader_class, true, true)); 430 431 mirror::ArtMethod* getSystemClassLoader = 432 class_loader_class->FindDirectMethod("getSystemClassLoader", "()Ljava/lang/ClassLoader;"); 433 CHECK(getSystemClassLoader != NULL); 434 435 JValue result = InvokeWithJValues(soa, nullptr, soa.EncodeMethod(getSystemClassLoader), nullptr); 436 JNIEnv* env = soa.Self()->GetJniEnv(); 437 ScopedLocalRef<jobject> system_class_loader(env, 438 soa.AddLocalReference<jobject>(result.GetL())); 439 CHECK(system_class_loader.get() != nullptr); 440 441 soa.Self()->SetClassLoaderOverride(system_class_loader.get()); 442 443 Handle<mirror::Class> thread_class( 444 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread))); 445 CHECK(cl->EnsureInitialized(soa.Self(), thread_class, true, true)); 446 447 ArtField* contextClassLoader = 448 thread_class->FindDeclaredInstanceField("contextClassLoader", "Ljava/lang/ClassLoader;"); 449 CHECK(contextClassLoader != NULL); 450 451 // We can't run in a transaction yet. 452 contextClassLoader->SetObject<false>(soa.Self()->GetPeer(), 453 soa.Decode<mirror::ClassLoader*>(system_class_loader.get())); 454 455 return env->NewGlobalRef(system_class_loader.get()); 456} 457 458std::string Runtime::GetPatchoatExecutable() const { 459 if (!patchoat_executable_.empty()) { 460 return patchoat_executable_; 461 } 462 std::string patchoat_executable(GetAndroidRoot()); 463 patchoat_executable += (kIsDebugBuild ? "/bin/patchoatd" : "/bin/patchoat"); 464 return patchoat_executable; 465} 466 467std::string Runtime::GetCompilerExecutable() const { 468 if (!compiler_executable_.empty()) { 469 return compiler_executable_; 470 } 471 std::string compiler_executable(GetAndroidRoot()); 472 compiler_executable += (kIsDebugBuild ? "/bin/dex2oatd" : "/bin/dex2oat"); 473 return compiler_executable; 474} 475 476bool Runtime::Start() { 477 VLOG(startup) << "Runtime::Start entering"; 478 479 // Restore main thread state to kNative as expected by native code. 480 Thread* self = Thread::Current(); 481 482 self->TransitionFromRunnableToSuspended(kNative); 483 484 started_ = true; 485 486 // Use !IsAotCompiler so that we get test coverage, tests are never the zygote. 487 if (!IsAotCompiler()) { 488 ScopedObjectAccess soa(self); 489 gc::space::ImageSpace* image_space = heap_->GetImageSpace(); 490 if (image_space != nullptr) { 491 GetInternTable()->AddImageStringsToTable(image_space); 492 GetClassLinker()->MoveImageClassesToClassTable(); 493 } 494 } 495 496 // If we are the zygote then we need to wait until after forking to create the code cache 497 // due to SELinux restrictions on r/w/x memory regions. 498 if (!IsZygote() && jit_options_->UseJIT()) { 499 CreateJit(); 500 } 501 502 if (!IsImageDex2OatEnabled() || !GetHeap()->HasImageSpace()) { 503 ScopedObjectAccess soa(self); 504 StackHandleScope<1> hs(soa.Self()); 505 auto klass(hs.NewHandle<mirror::Class>(mirror::Class::GetJavaLangClass())); 506 class_linker_->EnsureInitialized(soa.Self(), klass, true, true); 507 } 508 509 // InitNativeMethods needs to be after started_ so that the classes 510 // it touches will have methods linked to the oat file if necessary. 511 InitNativeMethods(); 512 513 // Initialize well known thread group values that may be accessed threads while attaching. 514 InitThreadGroups(self); 515 516 Thread::FinishStartup(); 517 518 system_class_loader_ = CreateSystemClassLoader(this); 519 520 if (is_zygote_) { 521 if (!InitZygote()) { 522 return false; 523 } 524 } else { 525 if (is_native_bridge_loaded_) { 526 PreInitializeNativeBridge("."); 527 } 528 DidForkFromZygote(self->GetJniEnv(), NativeBridgeAction::kInitialize, 529 GetInstructionSetString(kRuntimeISA)); 530 } 531 532 StartDaemonThreads(); 533 534 { 535 ScopedObjectAccess soa(self); 536 self->GetJniEnv()->locals.AssertEmpty(); 537 } 538 539 VLOG(startup) << "Runtime::Start exiting"; 540 finished_starting_ = true; 541 542 if (profiler_options_.IsEnabled() && !profile_output_filename_.empty()) { 543 // User has asked for a profile using -Xenable-profiler. 544 // Create the profile file if it doesn't exist. 545 int fd = open(profile_output_filename_.c_str(), O_RDWR|O_CREAT|O_EXCL, 0660); 546 if (fd >= 0) { 547 close(fd); 548 } else if (errno != EEXIST) { 549 LOG(INFO) << "Failed to access the profile file. Profiler disabled."; 550 return true; 551 } 552 StartProfiler(profile_output_filename_.c_str()); 553 } 554 555 if (trace_config_.get() != nullptr && trace_config_->trace_file != "") { 556 ScopedThreadStateChange tsc(self, kWaitingForMethodTracingStart); 557 Trace::Start(trace_config_->trace_file.c_str(), 558 -1, 559 static_cast<int>(trace_config_->trace_file_size), 560 0, 561 trace_config_->trace_output_mode, 562 trace_config_->trace_mode, 563 0); 564 } 565 566 return true; 567} 568 569void Runtime::EndThreadBirth() EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_) { 570 DCHECK_GT(threads_being_born_, 0U); 571 threads_being_born_--; 572 if (shutting_down_started_ && threads_being_born_ == 0) { 573 shutdown_cond_->Broadcast(Thread::Current()); 574 } 575} 576 577// Do zygote-mode-only initialization. 578bool Runtime::InitZygote() { 579#ifdef __linux__ 580 // zygote goes into its own process group 581 setpgid(0, 0); 582 583 // See storage config details at http://source.android.com/tech/storage/ 584 // Create private mount namespace shared by all children 585 if (unshare(CLONE_NEWNS) == -1) { 586 PLOG(WARNING) << "Failed to unshare()"; 587 return false; 588 } 589 590 // Mark rootfs as being a slave so that changes from default 591 // namespace only flow into our children. 592 if (mount("rootfs", "/", NULL, (MS_SLAVE | MS_REC), NULL) == -1) { 593 PLOG(WARNING) << "Failed to mount() rootfs as MS_SLAVE"; 594 return false; 595 } 596 597 // Create a staging tmpfs that is shared by our children; they will 598 // bind mount storage into their respective private namespaces, which 599 // are isolated from each other. 600 const char* target_base = getenv("EMULATED_STORAGE_TARGET"); 601 if (target_base != NULL) { 602 if (mount("tmpfs", target_base, "tmpfs", MS_NOSUID | MS_NODEV, 603 "uid=0,gid=1028,mode=0751") == -1) { 604 LOG(WARNING) << "Failed to mount tmpfs to " << target_base; 605 return false; 606 } 607 } 608 609 return true; 610#else 611 UNIMPLEMENTED(FATAL); 612 return false; 613#endif 614} 615 616void Runtime::DidForkFromZygote(JNIEnv* env, NativeBridgeAction action, const char* isa) { 617 is_zygote_ = false; 618 619 if (is_native_bridge_loaded_) { 620 switch (action) { 621 case NativeBridgeAction::kUnload: 622 UnloadNativeBridge(); 623 is_native_bridge_loaded_ = false; 624 break; 625 626 case NativeBridgeAction::kInitialize: 627 InitializeNativeBridge(env, isa); 628 break; 629 } 630 } 631 632 // Create the thread pools. 633 heap_->CreateThreadPool(); 634 if (jit_.get() == nullptr && jit_options_->UseJIT()) { 635 // Create the JIT if the flag is set and we haven't already create it (happens for run-tests). 636 CreateJit(); 637 } 638 639 StartSignalCatcher(); 640 641 // Start the JDWP thread. If the command-line debugger flags specified "suspend=y", 642 // this will pause the runtime, so we probably want this to come last. 643 Dbg::StartJdwp(); 644} 645 646void Runtime::StartSignalCatcher() { 647 if (!is_zygote_) { 648 signal_catcher_ = new SignalCatcher(stack_trace_file_); 649 } 650} 651 652bool Runtime::IsShuttingDown(Thread* self) { 653 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 654 return IsShuttingDownLocked(); 655} 656 657void Runtime::StartDaemonThreads() { 658 VLOG(startup) << "Runtime::StartDaemonThreads entering"; 659 660 Thread* self = Thread::Current(); 661 662 // Must be in the kNative state for calling native methods. 663 CHECK_EQ(self->GetState(), kNative); 664 665 JNIEnv* env = self->GetJniEnv(); 666 env->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 667 WellKnownClasses::java_lang_Daemons_start); 668 if (env->ExceptionCheck()) { 669 env->ExceptionDescribe(); 670 LOG(FATAL) << "Error starting java.lang.Daemons"; 671 } 672 673 VLOG(startup) << "Runtime::StartDaemonThreads exiting"; 674} 675 676static bool OpenDexFilesFromImage(const std::string& image_location, 677 std::vector<std::unique_ptr<const DexFile>>* dex_files, 678 size_t* failures) { 679 DCHECK(dex_files != nullptr) << "OpenDexFilesFromImage: out-param is NULL"; 680 std::string system_filename; 681 bool has_system = false; 682 std::string cache_filename_unused; 683 bool dalvik_cache_exists_unused; 684 bool has_cache_unused; 685 bool is_global_cache_unused; 686 bool found_image = gc::space::ImageSpace::FindImageFilename(image_location.c_str(), 687 kRuntimeISA, 688 &system_filename, 689 &has_system, 690 &cache_filename_unused, 691 &dalvik_cache_exists_unused, 692 &has_cache_unused, 693 &is_global_cache_unused); 694 *failures = 0; 695 if (!found_image || !has_system) { 696 return false; 697 } 698 std::string error_msg; 699 // We are falling back to non-executable use of the oat file because patching failed, presumably 700 // due to lack of space. 701 std::string oat_filename = ImageHeader::GetOatLocationFromImageLocation(system_filename.c_str()); 702 std::string oat_location = ImageHeader::GetOatLocationFromImageLocation(image_location.c_str()); 703 std::unique_ptr<File> file(OS::OpenFileForReading(oat_filename.c_str())); 704 if (file.get() == nullptr) { 705 return false; 706 } 707 std::unique_ptr<ElfFile> elf_file(ElfFile::Open(file.release(), false, false, &error_msg)); 708 if (elf_file.get() == nullptr) { 709 return false; 710 } 711 std::unique_ptr<OatFile> oat_file(OatFile::OpenWithElfFile(elf_file.release(), oat_location, 712 nullptr, &error_msg)); 713 if (oat_file.get() == nullptr) { 714 LOG(INFO) << "Unable to use '" << oat_filename << "' because " << error_msg; 715 return false; 716 } 717 718 for (const OatFile::OatDexFile* oat_dex_file : oat_file->GetOatDexFiles()) { 719 if (oat_dex_file == nullptr) { 720 *failures += 1; 721 continue; 722 } 723 std::unique_ptr<const DexFile> dex_file = oat_dex_file->OpenDexFile(&error_msg); 724 if (dex_file.get() == nullptr) { 725 *failures += 1; 726 } else { 727 dex_files->push_back(std::move(dex_file)); 728 } 729 } 730 Runtime::Current()->GetClassLinker()->RegisterOatFile(oat_file.release()); 731 return true; 732} 733 734 735static size_t OpenDexFiles(const std::vector<std::string>& dex_filenames, 736 const std::vector<std::string>& dex_locations, 737 const std::string& image_location, 738 std::vector<std::unique_ptr<const DexFile>>* dex_files) { 739 DCHECK(dex_files != nullptr) << "OpenDexFiles: out-param is NULL"; 740 size_t failure_count = 0; 741 if (!image_location.empty() && OpenDexFilesFromImage(image_location, dex_files, &failure_count)) { 742 return failure_count; 743 } 744 failure_count = 0; 745 for (size_t i = 0; i < dex_filenames.size(); i++) { 746 const char* dex_filename = dex_filenames[i].c_str(); 747 const char* dex_location = dex_locations[i].c_str(); 748 std::string error_msg; 749 if (!OS::FileExists(dex_filename)) { 750 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 751 continue; 752 } 753 if (!DexFile::Open(dex_filename, dex_location, &error_msg, dex_files)) { 754 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 755 ++failure_count; 756 } 757 } 758 return failure_count; 759} 760 761bool Runtime::Init(const RuntimeOptions& raw_options, bool ignore_unrecognized) { 762 CHECK_EQ(sysconf(_SC_PAGE_SIZE), kPageSize); 763 764 MemMap::Init(); 765 766 using Opt = RuntimeArgumentMap; 767 RuntimeArgumentMap runtime_options; 768 std::unique_ptr<ParsedOptions> parsed_options( 769 ParsedOptions::Create(raw_options, ignore_unrecognized, &runtime_options)); 770 if (parsed_options.get() == nullptr) { 771 LOG(ERROR) << "Failed to parse options"; 772 return false; 773 } 774 VLOG(startup) << "Runtime::Init -verbose:startup enabled"; 775 776 QuasiAtomic::Startup(); 777 778 Monitor::Init(runtime_options.GetOrDefault(Opt::LockProfThreshold), 779 runtime_options.GetOrDefault(Opt::HookIsSensitiveThread)); 780 781 boot_class_path_string_ = runtime_options.ReleaseOrDefault(Opt::BootClassPath); 782 class_path_string_ = runtime_options.ReleaseOrDefault(Opt::ClassPath); 783 properties_ = runtime_options.ReleaseOrDefault(Opt::PropertiesList); 784 785 compiler_callbacks_ = runtime_options.GetOrDefault(Opt::CompilerCallbacksPtr); 786 patchoat_executable_ = runtime_options.ReleaseOrDefault(Opt::PatchOat); 787 must_relocate_ = runtime_options.GetOrDefault(Opt::Relocate); 788 is_zygote_ = runtime_options.Exists(Opt::Zygote); 789 is_explicit_gc_disabled_ = runtime_options.Exists(Opt::DisableExplicitGC); 790 dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::Dex2Oat); 791 image_dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::ImageDex2Oat); 792 793 vfprintf_ = runtime_options.GetOrDefault(Opt::HookVfprintf); 794 exit_ = runtime_options.GetOrDefault(Opt::HookExit); 795 abort_ = runtime_options.GetOrDefault(Opt::HookAbort); 796 797 default_stack_size_ = runtime_options.GetOrDefault(Opt::StackSize); 798 stack_trace_file_ = runtime_options.ReleaseOrDefault(Opt::StackTraceFile); 799 800 compiler_executable_ = runtime_options.ReleaseOrDefault(Opt::Compiler); 801 compiler_options_ = runtime_options.ReleaseOrDefault(Opt::CompilerOptions); 802 image_compiler_options_ = runtime_options.ReleaseOrDefault(Opt::ImageCompilerOptions); 803 image_location_ = runtime_options.GetOrDefault(Opt::Image); 804 805 max_spins_before_thin_lock_inflation_ = 806 runtime_options.GetOrDefault(Opt::MaxSpinsBeforeThinLockInflation); 807 808 monitor_list_ = new MonitorList; 809 monitor_pool_ = MonitorPool::Create(); 810 thread_list_ = new ThreadList; 811 intern_table_ = new InternTable; 812 813 verify_ = runtime_options.GetOrDefault(Opt::Verify); 814 allow_dex_file_fallback_ = !runtime_options.Exists(Opt::NoDexFileFallback); 815 816 Split(runtime_options.GetOrDefault(Opt::CpuAbiList), ',', &cpu_abilist_); 817 818 if (runtime_options.GetOrDefault(Opt::Interpret)) { 819 GetInstrumentation()->ForceInterpretOnly(); 820 } 821 822 zygote_max_failed_boots_ = runtime_options.GetOrDefault(Opt::ZygoteMaxFailedBoots); 823 824 XGcOption xgc_option = runtime_options.GetOrDefault(Opt::GcOption); 825 heap_ = new gc::Heap(runtime_options.GetOrDefault(Opt::MemoryInitialSize), 826 runtime_options.GetOrDefault(Opt::HeapGrowthLimit), 827 runtime_options.GetOrDefault(Opt::HeapMinFree), 828 runtime_options.GetOrDefault(Opt::HeapMaxFree), 829 runtime_options.GetOrDefault(Opt::HeapTargetUtilization), 830 runtime_options.GetOrDefault(Opt::ForegroundHeapGrowthMultiplier), 831 runtime_options.GetOrDefault(Opt::MemoryMaximumSize), 832 runtime_options.GetOrDefault(Opt::NonMovingSpaceCapacity), 833 runtime_options.GetOrDefault(Opt::Image), 834 runtime_options.GetOrDefault(Opt::ImageInstructionSet), 835 xgc_option.collector_type_, 836 runtime_options.GetOrDefault(Opt::BackgroundGc), 837 runtime_options.GetOrDefault(Opt::LargeObjectSpace), 838 runtime_options.GetOrDefault(Opt::LargeObjectThreshold), 839 runtime_options.GetOrDefault(Opt::ParallelGCThreads), 840 runtime_options.GetOrDefault(Opt::ConcGCThreads), 841 runtime_options.Exists(Opt::LowMemoryMode), 842 runtime_options.GetOrDefault(Opt::LongPauseLogThreshold), 843 runtime_options.GetOrDefault(Opt::LongGCLogThreshold), 844 runtime_options.Exists(Opt::IgnoreMaxFootprint), 845 runtime_options.GetOrDefault(Opt::UseTLAB), 846 xgc_option.verify_pre_gc_heap_, 847 xgc_option.verify_pre_sweeping_heap_, 848 xgc_option.verify_post_gc_heap_, 849 xgc_option.verify_pre_gc_rosalloc_, 850 xgc_option.verify_pre_sweeping_rosalloc_, 851 xgc_option.verify_post_gc_rosalloc_, 852 runtime_options.GetOrDefault(Opt::EnableHSpaceCompactForOOM), 853 runtime_options.GetOrDefault(Opt::HSpaceCompactForOOMMinIntervalsMs)); 854 855 if (heap_->GetImageSpace() == nullptr && !allow_dex_file_fallback_) { 856 LOG(ERROR) << "Dex file fallback disabled, cannot continue without image."; 857 return false; 858 } 859 860 dump_gc_performance_on_shutdown_ = runtime_options.Exists(Opt::DumpGCPerformanceOnShutdown); 861 862 if (runtime_options.Exists(Opt::JdwpOptions)) { 863 Dbg::ConfigureJdwp(runtime_options.GetOrDefault(Opt::JdwpOptions)); 864 } 865 866 jit_options_.reset(jit::JitOptions::CreateFromRuntimeArguments(runtime_options)); 867 bool use_jit = jit_options_->UseJIT(); 868 if (IsAotCompiler()) { 869 // If we are already the compiler at this point, we must be dex2oat. Don't create the jit in 870 // this case. 871 // If runtime_options doesn't have UseJIT set to true then CreateFromRuntimeArguments returns 872 // nullptr and we don't create the jit. 873 use_jit = false; 874 } 875 876 // Use MemMap arena pool for jit, malloc otherwise. Malloc arenas are faster to allocate but 877 // can't be trimmed as easily. 878 const bool use_malloc = !use_jit; 879 arena_pool_.reset(new ArenaPool(use_malloc, false)); 880 if (IsCompiler() && Is64BitInstructionSet(kRuntimeISA)) { 881 // 4gb, no malloc. Explanation in header. 882 low_4gb_arena_pool_.reset(new ArenaPool(false, true)); 883 linear_alloc_.reset(new LinearAlloc(low_4gb_arena_pool_.get())); 884 } else { 885 linear_alloc_.reset(new LinearAlloc(arena_pool_.get())); 886 } 887 888 BlockSignals(); 889 InitPlatformSignalHandlers(); 890 891 // Change the implicit checks flags based on runtime architecture. 892 switch (kRuntimeISA) { 893 case kArm: 894 case kThumb2: 895 case kX86: 896 case kArm64: 897 case kX86_64: 898 implicit_null_checks_ = true; 899 // Installing stack protection does not play well with valgrind. 900 implicit_so_checks_ = (RUNNING_ON_VALGRIND == 0); 901 break; 902 default: 903 // Keep the defaults. 904 break; 905 } 906 907 // Always initialize the signal chain so that any calls to sigaction get 908 // correctly routed to the next in the chain regardless of whether we 909 // have claimed the signal or not. 910 InitializeSignalChain(); 911 912 if (implicit_null_checks_ || implicit_so_checks_ || implicit_suspend_checks_) { 913 fault_manager.Init(); 914 915 // These need to be in a specific order. The null point check handler must be 916 // after the suspend check and stack overflow check handlers. 917 // 918 // Note: the instances attach themselves to the fault manager and are handled by it. The manager 919 // will delete the instance on Shutdown(). 920 if (implicit_suspend_checks_) { 921 new SuspensionHandler(&fault_manager); 922 } 923 924 if (implicit_so_checks_) { 925 new StackOverflowHandler(&fault_manager); 926 } 927 928 if (implicit_null_checks_) { 929 new NullPointerHandler(&fault_manager); 930 } 931 932 if (kEnableJavaStackTraceHandler) { 933 new JavaStackTraceHandler(&fault_manager); 934 } 935 } 936 937 java_vm_ = new JavaVMExt(this, runtime_options); 938 939 Thread::Startup(); 940 941 // ClassLinker needs an attached thread, but we can't fully attach a thread without creating 942 // objects. We can't supply a thread group yet; it will be fixed later. Since we are the main 943 // thread, we do not get a java peer. 944 Thread* self = Thread::Attach("main", false, nullptr, false); 945 CHECK_EQ(self->GetThreadId(), ThreadList::kMainThreadId); 946 CHECK(self != nullptr); 947 948 // Set us to runnable so tools using a runtime can allocate and GC by default 949 self->TransitionFromSuspendedToRunnable(); 950 951 // Now we're attached, we can take the heap locks and validate the heap. 952 GetHeap()->EnableObjectValidation(); 953 954 CHECK_GE(GetHeap()->GetContinuousSpaces().size(), 1U); 955 class_linker_ = new ClassLinker(intern_table_); 956 if (GetHeap()->HasImageSpace()) { 957 class_linker_->InitFromImage(); 958 if (kIsDebugBuild) { 959 GetHeap()->GetImageSpace()->VerifyImageAllocations(); 960 } 961 if (boot_class_path_string_.empty()) { 962 // The bootclasspath is not explicitly specified: construct it from the loaded dex files. 963 const std::vector<const DexFile*>& boot_class_path = GetClassLinker()->GetBootClassPath(); 964 std::vector<std::string> dex_locations; 965 dex_locations.reserve(boot_class_path.size()); 966 for (const DexFile* dex_file : boot_class_path) { 967 dex_locations.push_back(dex_file->GetLocation()); 968 } 969 boot_class_path_string_ = Join(dex_locations, ':'); 970 } 971 } else { 972 std::vector<std::string> dex_filenames; 973 Split(boot_class_path_string_, ':', &dex_filenames); 974 975 std::vector<std::string> dex_locations; 976 if (!runtime_options.Exists(Opt::BootClassPathLocations)) { 977 dex_locations = dex_filenames; 978 } else { 979 dex_locations = runtime_options.GetOrDefault(Opt::BootClassPathLocations); 980 CHECK_EQ(dex_filenames.size(), dex_locations.size()); 981 } 982 983 std::vector<std::unique_ptr<const DexFile>> boot_class_path; 984 OpenDexFiles(dex_filenames, 985 dex_locations, 986 runtime_options.GetOrDefault(Opt::Image), 987 &boot_class_path); 988 instruction_set_ = runtime_options.GetOrDefault(Opt::ImageInstructionSet); 989 class_linker_->InitWithoutImage(std::move(boot_class_path)); 990 991 // TODO: Should we move the following to InitWithoutImage? 992 SetInstructionSet(instruction_set_); 993 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 994 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 995 if (!HasCalleeSaveMethod(type)) { 996 SetCalleeSaveMethod(CreateCalleeSaveMethod(), type); 997 } 998 } 999 } 1000 1001 CHECK(class_linker_ != nullptr); 1002 1003 // Initialize the special sentinel_ value early. 1004 sentinel_ = GcRoot<mirror::Object>(class_linker_->AllocObject(self)); 1005 CHECK(sentinel_.Read() != nullptr); 1006 1007 verifier::MethodVerifier::Init(); 1008 1009 if (runtime_options.Exists(Opt::MethodTrace)) { 1010 trace_config_.reset(new TraceConfig()); 1011 trace_config_->trace_file = runtime_options.ReleaseOrDefault(Opt::MethodTraceFile); 1012 trace_config_->trace_file_size = runtime_options.ReleaseOrDefault(Opt::MethodTraceFileSize); 1013 trace_config_->trace_mode = Trace::TraceMode::kMethodTracing; 1014 trace_config_->trace_output_mode = runtime_options.Exists(Opt::MethodTraceStreaming) ? 1015 Trace::TraceOutputMode::kStreaming : 1016 Trace::TraceOutputMode::kFile; 1017 } 1018 1019 { 1020 auto&& profiler_options = runtime_options.ReleaseOrDefault(Opt::ProfilerOpts); 1021 profile_output_filename_ = profiler_options.output_file_name_; 1022 1023 // TODO: Don't do this, just change ProfilerOptions to include the output file name? 1024 ProfilerOptions other_options( 1025 profiler_options.enabled_, 1026 profiler_options.period_s_, 1027 profiler_options.duration_s_, 1028 profiler_options.interval_us_, 1029 profiler_options.backoff_coefficient_, 1030 profiler_options.start_immediately_, 1031 profiler_options.top_k_threshold_, 1032 profiler_options.top_k_change_threshold_, 1033 profiler_options.profile_type_, 1034 profiler_options.max_stack_depth_); 1035 1036 profiler_options_ = other_options; 1037 } 1038 1039 // TODO: move this to just be an Trace::Start argument 1040 Trace::SetDefaultClockSource(runtime_options.GetOrDefault(Opt::ProfileClock)); 1041 1042 // Pre-allocate an OutOfMemoryError for the double-OOME case. 1043 self->ThrowNewException("Ljava/lang/OutOfMemoryError;", 1044 "OutOfMemoryError thrown while trying to throw OutOfMemoryError; " 1045 "no stack trace available"); 1046 pre_allocated_OutOfMemoryError_ = GcRoot<mirror::Throwable>(self->GetException()); 1047 self->ClearException(); 1048 1049 // Pre-allocate a NoClassDefFoundError for the common case of failing to find a system class 1050 // ahead of checking the application's class loader. 1051 self->ThrowNewException("Ljava/lang/NoClassDefFoundError;", 1052 "Class not found using the boot class loader; no stack trace available"); 1053 pre_allocated_NoClassDefFoundError_ = GcRoot<mirror::Throwable>(self->GetException()); 1054 self->ClearException(); 1055 1056 // Look for a native bridge. 1057 // 1058 // The intended flow here is, in the case of a running system: 1059 // 1060 // Runtime::Init() (zygote): 1061 // LoadNativeBridge -> dlopen from cmd line parameter. 1062 // | 1063 // V 1064 // Runtime::Start() (zygote): 1065 // No-op wrt native bridge. 1066 // | 1067 // | start app 1068 // V 1069 // DidForkFromZygote(action) 1070 // action = kUnload -> dlclose native bridge. 1071 // action = kInitialize -> initialize library 1072 // 1073 // 1074 // The intended flow here is, in the case of a simple dalvikvm call: 1075 // 1076 // Runtime::Init(): 1077 // LoadNativeBridge -> dlopen from cmd line parameter. 1078 // | 1079 // V 1080 // Runtime::Start(): 1081 // DidForkFromZygote(kInitialize) -> try to initialize any native bridge given. 1082 // No-op wrt native bridge. 1083 { 1084 std::string native_bridge_file_name = runtime_options.ReleaseOrDefault(Opt::NativeBridge); 1085 is_native_bridge_loaded_ = LoadNativeBridge(native_bridge_file_name); 1086 } 1087 1088 VLOG(startup) << "Runtime::Init exiting"; 1089 return true; 1090} 1091 1092void Runtime::InitNativeMethods() { 1093 VLOG(startup) << "Runtime::InitNativeMethods entering"; 1094 Thread* self = Thread::Current(); 1095 JNIEnv* env = self->GetJniEnv(); 1096 1097 // Must be in the kNative state for calling native methods (JNI_OnLoad code). 1098 CHECK_EQ(self->GetState(), kNative); 1099 1100 // First set up JniConstants, which is used by both the runtime's built-in native 1101 // methods and libcore. 1102 JniConstants::init(env); 1103 WellKnownClasses::Init(env); 1104 1105 // Then set up the native methods provided by the runtime itself. 1106 RegisterRuntimeNativeMethods(env); 1107 1108 // Then set up libcore, which is just a regular JNI library with a regular JNI_OnLoad. 1109 // Most JNI libraries can just use System.loadLibrary, but libcore can't because it's 1110 // the library that implements System.loadLibrary! 1111 { 1112 std::string reason; 1113 if (!java_vm_->LoadNativeLibrary(env, "libjavacore.so", nullptr, &reason)) { 1114 LOG(FATAL) << "LoadNativeLibrary failed for \"libjavacore.so\": " << reason; 1115 } 1116 } 1117 1118 // Initialize well known classes that may invoke runtime native methods. 1119 WellKnownClasses::LateInit(env); 1120 1121 VLOG(startup) << "Runtime::InitNativeMethods exiting"; 1122} 1123 1124void Runtime::InitThreadGroups(Thread* self) { 1125 JNIEnvExt* env = self->GetJniEnv(); 1126 ScopedJniEnvLocalRefState env_state(env); 1127 main_thread_group_ = 1128 env->NewGlobalRef(env->GetStaticObjectField( 1129 WellKnownClasses::java_lang_ThreadGroup, 1130 WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup)); 1131 CHECK(main_thread_group_ != NULL || IsAotCompiler()); 1132 system_thread_group_ = 1133 env->NewGlobalRef(env->GetStaticObjectField( 1134 WellKnownClasses::java_lang_ThreadGroup, 1135 WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup)); 1136 CHECK(system_thread_group_ != NULL || IsAotCompiler()); 1137} 1138 1139jobject Runtime::GetMainThreadGroup() const { 1140 CHECK(main_thread_group_ != NULL || IsAotCompiler()); 1141 return main_thread_group_; 1142} 1143 1144jobject Runtime::GetSystemThreadGroup() const { 1145 CHECK(system_thread_group_ != NULL || IsAotCompiler()); 1146 return system_thread_group_; 1147} 1148 1149jobject Runtime::GetSystemClassLoader() const { 1150 CHECK(system_class_loader_ != NULL || IsAotCompiler()); 1151 return system_class_loader_; 1152} 1153 1154void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) { 1155 register_dalvik_system_DexFile(env); 1156 register_dalvik_system_VMDebug(env); 1157 register_dalvik_system_VMRuntime(env); 1158 register_dalvik_system_VMStack(env); 1159 register_dalvik_system_ZygoteHooks(env); 1160 register_java_lang_Class(env); 1161 register_java_lang_DexCache(env); 1162 register_java_lang_Object(env); 1163 register_java_lang_ref_FinalizerReference(env); 1164 register_java_lang_reflect_Array(env); 1165 register_java_lang_reflect_Constructor(env); 1166 register_java_lang_reflect_Field(env); 1167 register_java_lang_reflect_Method(env); 1168 register_java_lang_reflect_Proxy(env); 1169 register_java_lang_ref_Reference(env); 1170 register_java_lang_Runtime(env); 1171 register_java_lang_String(env); 1172 register_java_lang_System(env); 1173 register_java_lang_Thread(env); 1174 register_java_lang_Throwable(env); 1175 register_java_lang_VMClassLoader(env); 1176 register_java_util_concurrent_atomic_AtomicLong(env); 1177 register_org_apache_harmony_dalvik_ddmc_DdmServer(env); 1178 register_org_apache_harmony_dalvik_ddmc_DdmVmInternal(env); 1179 register_sun_misc_Unsafe(env); 1180} 1181 1182void Runtime::DumpForSigQuit(std::ostream& os) { 1183 GetClassLinker()->DumpForSigQuit(os); 1184 GetInternTable()->DumpForSigQuit(os); 1185 GetJavaVM()->DumpForSigQuit(os); 1186 GetHeap()->DumpForSigQuit(os); 1187 TrackedAllocators::Dump(os); 1188 os << "\n"; 1189 1190 thread_list_->DumpForSigQuit(os); 1191 BaseMutex::DumpAll(os); 1192} 1193 1194void Runtime::DumpLockHolders(std::ostream& os) { 1195 uint64_t mutator_lock_owner = Locks::mutator_lock_->GetExclusiveOwnerTid(); 1196 pid_t thread_list_lock_owner = GetThreadList()->GetLockOwner(); 1197 pid_t classes_lock_owner = GetClassLinker()->GetClassesLockOwner(); 1198 pid_t dex_lock_owner = GetClassLinker()->GetDexLockOwner(); 1199 if ((thread_list_lock_owner | classes_lock_owner | dex_lock_owner) != 0) { 1200 os << "Mutator lock exclusive owner tid: " << mutator_lock_owner << "\n" 1201 << "ThreadList lock owner tid: " << thread_list_lock_owner << "\n" 1202 << "ClassLinker classes lock owner tid: " << classes_lock_owner << "\n" 1203 << "ClassLinker dex lock owner tid: " << dex_lock_owner << "\n"; 1204 } 1205} 1206 1207void Runtime::SetStatsEnabled(bool new_state) { 1208 Thread* self = Thread::Current(); 1209 MutexLock mu(self, *Locks::instrument_entrypoints_lock_); 1210 if (new_state == true) { 1211 GetStats()->Clear(~0); 1212 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1213 self->GetStats()->Clear(~0); 1214 if (stats_enabled_ != new_state) { 1215 GetInstrumentation()->InstrumentQuickAllocEntryPointsLocked(); 1216 } 1217 } else if (stats_enabled_ != new_state) { 1218 GetInstrumentation()->UninstrumentQuickAllocEntryPointsLocked(); 1219 } 1220 stats_enabled_ = new_state; 1221} 1222 1223void Runtime::ResetStats(int kinds) { 1224 GetStats()->Clear(kinds & 0xffff); 1225 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1226 Thread::Current()->GetStats()->Clear(kinds >> 16); 1227} 1228 1229int32_t Runtime::GetStat(int kind) { 1230 RuntimeStats* stats; 1231 if (kind < (1<<16)) { 1232 stats = GetStats(); 1233 } else { 1234 stats = Thread::Current()->GetStats(); 1235 kind >>= 16; 1236 } 1237 switch (kind) { 1238 case KIND_ALLOCATED_OBJECTS: 1239 return stats->allocated_objects; 1240 case KIND_ALLOCATED_BYTES: 1241 return stats->allocated_bytes; 1242 case KIND_FREED_OBJECTS: 1243 return stats->freed_objects; 1244 case KIND_FREED_BYTES: 1245 return stats->freed_bytes; 1246 case KIND_GC_INVOCATIONS: 1247 return stats->gc_for_alloc_count; 1248 case KIND_CLASS_INIT_COUNT: 1249 return stats->class_init_count; 1250 case KIND_CLASS_INIT_TIME: 1251 // Convert ns to us, reduce to 32 bits. 1252 return static_cast<int>(stats->class_init_time_ns / 1000); 1253 case KIND_EXT_ALLOCATED_OBJECTS: 1254 case KIND_EXT_ALLOCATED_BYTES: 1255 case KIND_EXT_FREED_OBJECTS: 1256 case KIND_EXT_FREED_BYTES: 1257 return 0; // backward compatibility 1258 default: 1259 LOG(FATAL) << "Unknown statistic " << kind; 1260 return -1; // unreachable 1261 } 1262} 1263 1264void Runtime::BlockSignals() { 1265 SignalSet signals; 1266 signals.Add(SIGPIPE); 1267 // SIGQUIT is used to dump the runtime's state (including stack traces). 1268 signals.Add(SIGQUIT); 1269 // SIGUSR1 is used to initiate a GC. 1270 signals.Add(SIGUSR1); 1271 signals.Block(); 1272} 1273 1274bool Runtime::AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group, 1275 bool create_peer) { 1276 return Thread::Attach(thread_name, as_daemon, thread_group, create_peer) != NULL; 1277} 1278 1279void Runtime::DetachCurrentThread() { 1280 Thread* self = Thread::Current(); 1281 if (self == NULL) { 1282 LOG(FATAL) << "attempting to detach thread that is not attached"; 1283 } 1284 if (self->HasManagedStack()) { 1285 LOG(FATAL) << *Thread::Current() << " attempting to detach while still running code"; 1286 } 1287 thread_list_->Unregister(self); 1288} 1289 1290mirror::Throwable* Runtime::GetPreAllocatedOutOfMemoryError() { 1291 mirror::Throwable* oome = pre_allocated_OutOfMemoryError_.Read(); 1292 if (oome == nullptr) { 1293 LOG(ERROR) << "Failed to return pre-allocated OOME"; 1294 } 1295 return oome; 1296} 1297 1298mirror::Throwable* Runtime::GetPreAllocatedNoClassDefFoundError() { 1299 mirror::Throwable* ncdfe = pre_allocated_NoClassDefFoundError_.Read(); 1300 if (ncdfe == nullptr) { 1301 LOG(ERROR) << "Failed to return pre-allocated NoClassDefFoundError"; 1302 } 1303 return ncdfe; 1304} 1305 1306void Runtime::VisitConstantRoots(RootVisitor* visitor) { 1307 // Visit the classes held as static in mirror classes, these can be visited concurrently and only 1308 // need to be visited once per GC since they never change. 1309 mirror::ArtMethod::VisitRoots(visitor); 1310 mirror::Class::VisitRoots(visitor); 1311 mirror::Reference::VisitRoots(visitor); 1312 mirror::StackTraceElement::VisitRoots(visitor); 1313 mirror::String::VisitRoots(visitor); 1314 mirror::Throwable::VisitRoots(visitor); 1315 mirror::Field::VisitRoots(visitor); 1316 // Visit all the primitive array types classes. 1317 mirror::PrimitiveArray<uint8_t>::VisitRoots(visitor); // BooleanArray 1318 mirror::PrimitiveArray<int8_t>::VisitRoots(visitor); // ByteArray 1319 mirror::PrimitiveArray<uint16_t>::VisitRoots(visitor); // CharArray 1320 mirror::PrimitiveArray<double>::VisitRoots(visitor); // DoubleArray 1321 mirror::PrimitiveArray<float>::VisitRoots(visitor); // FloatArray 1322 mirror::PrimitiveArray<int32_t>::VisitRoots(visitor); // IntArray 1323 mirror::PrimitiveArray<int64_t>::VisitRoots(visitor); // LongArray 1324 mirror::PrimitiveArray<int16_t>::VisitRoots(visitor); // ShortArray 1325} 1326 1327void Runtime::VisitConcurrentRoots(RootVisitor* visitor, VisitRootFlags flags) { 1328 intern_table_->VisitRoots(visitor, flags); 1329 class_linker_->VisitRoots(visitor, flags); 1330 if ((flags & kVisitRootFlagNewRoots) == 0) { 1331 // Guaranteed to have no new roots in the constant roots. 1332 VisitConstantRoots(visitor); 1333 } 1334} 1335 1336void Runtime::VisitTransactionRoots(RootVisitor* visitor) { 1337 if (preinitialization_transaction_ != nullptr) { 1338 preinitialization_transaction_->VisitRoots(visitor); 1339 } 1340} 1341 1342void Runtime::VisitNonThreadRoots(RootVisitor* visitor) { 1343 java_vm_->VisitRoots(visitor); 1344 sentinel_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1345 pre_allocated_OutOfMemoryError_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1346 resolution_method_.VisitRoot(visitor, RootInfo(kRootVMInternal)); 1347 pre_allocated_NoClassDefFoundError_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1348 imt_conflict_method_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1349 imt_unimplemented_method_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1350 default_imt_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1351 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 1352 callee_save_methods_[i].VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1353 } 1354 verifier::MethodVerifier::VisitStaticRoots(visitor); 1355 VisitTransactionRoots(visitor); 1356 instrumentation_.VisitRoots(visitor); 1357} 1358 1359void Runtime::VisitNonConcurrentRoots(RootVisitor* visitor) { 1360 thread_list_->VisitRoots(visitor); 1361 VisitNonThreadRoots(visitor); 1362} 1363 1364void Runtime::VisitThreadRoots(RootVisitor* visitor) { 1365 thread_list_->VisitRoots(visitor); 1366} 1367 1368size_t Runtime::FlipThreadRoots(Closure* thread_flip_visitor, Closure* flip_callback, 1369 gc::collector::GarbageCollector* collector) { 1370 return thread_list_->FlipThreadRoots(thread_flip_visitor, flip_callback, collector); 1371} 1372 1373void Runtime::VisitRoots(RootVisitor* visitor, VisitRootFlags flags) { 1374 VisitNonConcurrentRoots(visitor); 1375 VisitConcurrentRoots(visitor, flags); 1376} 1377 1378void Runtime::VisitImageRoots(RootVisitor* visitor) { 1379 for (auto* space : GetHeap()->GetContinuousSpaces()) { 1380 if (space->IsImageSpace()) { 1381 auto* image_space = space->AsImageSpace(); 1382 const auto& image_header = image_space->GetImageHeader(); 1383 for (size_t i = 0; i < ImageHeader::kImageRootsMax; ++i) { 1384 auto* obj = image_header.GetImageRoot(static_cast<ImageHeader::ImageRoot>(i)); 1385 if (obj != nullptr) { 1386 auto* after_obj = obj; 1387 visitor->VisitRoot(&after_obj, RootInfo(kRootStickyClass)); 1388 CHECK_EQ(after_obj, obj); 1389 } 1390 } 1391 } 1392 } 1393} 1394 1395mirror::ObjectArray<mirror::ArtMethod>* Runtime::CreateDefaultImt(ClassLinker* cl) { 1396 Thread* self = Thread::Current(); 1397 StackHandleScope<1> hs(self); 1398 Handle<mirror::ObjectArray<mirror::ArtMethod>> imtable( 1399 hs.NewHandle(cl->AllocArtMethodArray(self, 64))); 1400 mirror::ArtMethod* imt_conflict_method = Runtime::Current()->GetImtConflictMethod(); 1401 for (size_t i = 0; i < static_cast<size_t>(imtable->GetLength()); i++) { 1402 imtable->Set<false>(i, imt_conflict_method); 1403 } 1404 return imtable.Get(); 1405} 1406 1407mirror::ArtMethod* Runtime::CreateImtConflictMethod() { 1408 Thread* self = Thread::Current(); 1409 Runtime* runtime = Runtime::Current(); 1410 ClassLinker* class_linker = runtime->GetClassLinker(); 1411 StackHandleScope<1> hs(self); 1412 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self))); 1413 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod()); 1414 // TODO: use a special method for imt conflict method saves. 1415 method->SetDexMethodIndex(DexFile::kDexNoIndex); 1416 // When compiling, the code pointer will get set later when the image is loaded. 1417 if (runtime->IsAotCompiler()) { 1418 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1419 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1420 } else { 1421 method->SetEntryPointFromQuickCompiledCode(GetQuickImtConflictStub()); 1422 } 1423 return method.Get(); 1424} 1425 1426void Runtime::SetImtConflictMethod(mirror::ArtMethod* method) { 1427 imt_conflict_method_ = GcRoot<mirror::ArtMethod>(method); 1428} 1429 1430mirror::ArtMethod* Runtime::CreateResolutionMethod() { 1431 Thread* self = Thread::Current(); 1432 Runtime* runtime = Runtime::Current(); 1433 ClassLinker* class_linker = runtime->GetClassLinker(); 1434 StackHandleScope<1> hs(self); 1435 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self))); 1436 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod()); 1437 // TODO: use a special method for resolution method saves 1438 method->SetDexMethodIndex(DexFile::kDexNoIndex); 1439 // When compiling, the code pointer will get set later when the image is loaded. 1440 if (runtime->IsAotCompiler()) { 1441 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1442 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1443 } else { 1444 method->SetEntryPointFromQuickCompiledCode(GetQuickResolutionStub()); 1445 } 1446 return method.Get(); 1447} 1448 1449mirror::ArtMethod* Runtime::CreateCalleeSaveMethod() { 1450 Thread* self = Thread::Current(); 1451 Runtime* runtime = Runtime::Current(); 1452 ClassLinker* class_linker = runtime->GetClassLinker(); 1453 StackHandleScope<1> hs(self); 1454 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self))); 1455 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod()); 1456 // TODO: use a special method for callee saves 1457 method->SetDexMethodIndex(DexFile::kDexNoIndex); 1458 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1459 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1460 DCHECK_NE(instruction_set_, kNone); 1461 return method.Get(); 1462} 1463 1464void Runtime::DisallowNewSystemWeaks() { 1465 monitor_list_->DisallowNewMonitors(); 1466 intern_table_->DisallowNewInterns(); 1467 java_vm_->DisallowNewWeakGlobals(); 1468} 1469 1470void Runtime::AllowNewSystemWeaks() { 1471 monitor_list_->AllowNewMonitors(); 1472 intern_table_->AllowNewInterns(); 1473 java_vm_->AllowNewWeakGlobals(); 1474} 1475 1476void Runtime::EnsureNewSystemWeaksDisallowed() { 1477 // Lock and unlock the system weak locks once to ensure that no 1478 // threads are still in the middle of adding new system weaks. 1479 monitor_list_->EnsureNewMonitorsDisallowed(); 1480 intern_table_->EnsureNewInternsDisallowed(); 1481 java_vm_->EnsureNewWeakGlobalsDisallowed(); 1482} 1483 1484void Runtime::SetInstructionSet(InstructionSet instruction_set) { 1485 instruction_set_ = instruction_set; 1486 if ((instruction_set_ == kThumb2) || (instruction_set_ == kArm)) { 1487 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1488 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1489 callee_save_method_frame_infos_[i] = arm::ArmCalleeSaveMethodFrameInfo(type); 1490 } 1491 } else if (instruction_set_ == kMips) { 1492 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1493 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1494 callee_save_method_frame_infos_[i] = mips::MipsCalleeSaveMethodFrameInfo(type); 1495 } 1496 } else if (instruction_set_ == kMips64) { 1497 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1498 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1499 callee_save_method_frame_infos_[i] = mips64::Mips64CalleeSaveMethodFrameInfo(type); 1500 } 1501 } else if (instruction_set_ == kX86) { 1502 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1503 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1504 callee_save_method_frame_infos_[i] = x86::X86CalleeSaveMethodFrameInfo(type); 1505 } 1506 } else if (instruction_set_ == kX86_64) { 1507 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1508 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1509 callee_save_method_frame_infos_[i] = x86_64::X86_64CalleeSaveMethodFrameInfo(type); 1510 } 1511 } else if (instruction_set_ == kArm64) { 1512 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1513 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1514 callee_save_method_frame_infos_[i] = arm64::Arm64CalleeSaveMethodFrameInfo(type); 1515 } 1516 } else { 1517 UNIMPLEMENTED(FATAL) << instruction_set_; 1518 } 1519} 1520 1521void Runtime::SetCalleeSaveMethod(mirror::ArtMethod* method, CalleeSaveType type) { 1522 DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType)); 1523 callee_save_methods_[type] = GcRoot<mirror::ArtMethod>(method); 1524} 1525 1526void Runtime::StartProfiler(const char* profile_output_filename) { 1527 profile_output_filename_ = profile_output_filename; 1528 profiler_started_ = 1529 BackgroundMethodSamplingProfiler::Start(profile_output_filename_, profiler_options_); 1530} 1531 1532// Transaction support. 1533void Runtime::EnterTransactionMode(Transaction* transaction) { 1534 DCHECK(IsAotCompiler()); 1535 DCHECK(transaction != nullptr); 1536 DCHECK(!IsActiveTransaction()); 1537 preinitialization_transaction_ = transaction; 1538} 1539 1540void Runtime::ExitTransactionMode() { 1541 DCHECK(IsAotCompiler()); 1542 DCHECK(IsActiveTransaction()); 1543 preinitialization_transaction_ = nullptr; 1544} 1545 1546 1547bool Runtime::IsTransactionAborted() const { 1548 if (!IsActiveTransaction()) { 1549 return false; 1550 } else { 1551 DCHECK(IsAotCompiler()); 1552 return preinitialization_transaction_->IsAborted(); 1553 } 1554} 1555 1556void Runtime::AbortTransactionAndThrowAbortError(Thread* self, const std::string& abort_message) { 1557 DCHECK(IsAotCompiler()); 1558 DCHECK(IsActiveTransaction()); 1559 // Throwing an exception may cause its class initialization. If we mark the transaction 1560 // aborted before that, we may warn with a false alarm. Throwing the exception before 1561 // marking the transaction aborted avoids that. 1562 preinitialization_transaction_->ThrowAbortError(self, false); 1563 preinitialization_transaction_->Abort(abort_message); 1564} 1565 1566void Runtime::ThrowTransactionAbortError(Thread* self) { 1567 DCHECK(IsAotCompiler()); 1568 DCHECK(IsActiveTransaction()); 1569 preinitialization_transaction_->ThrowAbortError(self, true); 1570} 1571 1572void Runtime::RecordWriteFieldBoolean(mirror::Object* obj, MemberOffset field_offset, 1573 uint8_t value, bool is_volatile) const { 1574 DCHECK(IsAotCompiler()); 1575 DCHECK(IsActiveTransaction()); 1576 preinitialization_transaction_->RecordWriteFieldBoolean(obj, field_offset, value, is_volatile); 1577} 1578 1579void Runtime::RecordWriteFieldByte(mirror::Object* obj, MemberOffset field_offset, 1580 int8_t value, bool is_volatile) const { 1581 DCHECK(IsAotCompiler()); 1582 DCHECK(IsActiveTransaction()); 1583 preinitialization_transaction_->RecordWriteFieldByte(obj, field_offset, value, is_volatile); 1584} 1585 1586void Runtime::RecordWriteFieldChar(mirror::Object* obj, MemberOffset field_offset, 1587 uint16_t value, bool is_volatile) const { 1588 DCHECK(IsAotCompiler()); 1589 DCHECK(IsActiveTransaction()); 1590 preinitialization_transaction_->RecordWriteFieldChar(obj, field_offset, value, is_volatile); 1591} 1592 1593void Runtime::RecordWriteFieldShort(mirror::Object* obj, MemberOffset field_offset, 1594 int16_t value, bool is_volatile) const { 1595 DCHECK(IsAotCompiler()); 1596 DCHECK(IsActiveTransaction()); 1597 preinitialization_transaction_->RecordWriteFieldShort(obj, field_offset, value, is_volatile); 1598} 1599 1600void Runtime::RecordWriteField32(mirror::Object* obj, MemberOffset field_offset, 1601 uint32_t value, bool is_volatile) const { 1602 DCHECK(IsAotCompiler()); 1603 DCHECK(IsActiveTransaction()); 1604 preinitialization_transaction_->RecordWriteField32(obj, field_offset, value, is_volatile); 1605} 1606 1607void Runtime::RecordWriteField64(mirror::Object* obj, MemberOffset field_offset, 1608 uint64_t value, bool is_volatile) const { 1609 DCHECK(IsAotCompiler()); 1610 DCHECK(IsActiveTransaction()); 1611 preinitialization_transaction_->RecordWriteField64(obj, field_offset, value, is_volatile); 1612} 1613 1614void Runtime::RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset, 1615 mirror::Object* value, bool is_volatile) const { 1616 DCHECK(IsAotCompiler()); 1617 DCHECK(IsActiveTransaction()); 1618 preinitialization_transaction_->RecordWriteFieldReference(obj, field_offset, value, is_volatile); 1619} 1620 1621void Runtime::RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const { 1622 DCHECK(IsAotCompiler()); 1623 DCHECK(IsActiveTransaction()); 1624 preinitialization_transaction_->RecordWriteArray(array, index, value); 1625} 1626 1627void Runtime::RecordStrongStringInsertion(mirror::String* s) const { 1628 DCHECK(IsAotCompiler()); 1629 DCHECK(IsActiveTransaction()); 1630 preinitialization_transaction_->RecordStrongStringInsertion(s); 1631} 1632 1633void Runtime::RecordWeakStringInsertion(mirror::String* s) const { 1634 DCHECK(IsAotCompiler()); 1635 DCHECK(IsActiveTransaction()); 1636 preinitialization_transaction_->RecordWeakStringInsertion(s); 1637} 1638 1639void Runtime::RecordStrongStringRemoval(mirror::String* s) const { 1640 DCHECK(IsAotCompiler()); 1641 DCHECK(IsActiveTransaction()); 1642 preinitialization_transaction_->RecordStrongStringRemoval(s); 1643} 1644 1645void Runtime::RecordWeakStringRemoval(mirror::String* s) const { 1646 DCHECK(IsAotCompiler()); 1647 DCHECK(IsActiveTransaction()); 1648 preinitialization_transaction_->RecordWeakStringRemoval(s); 1649} 1650 1651void Runtime::SetFaultMessage(const std::string& message) { 1652 MutexLock mu(Thread::Current(), fault_message_lock_); 1653 fault_message_ = message; 1654} 1655 1656void Runtime::AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* argv) 1657 const { 1658 if (GetInstrumentation()->InterpretOnly() || UseJit()) { 1659 argv->push_back("--compiler-filter=interpret-only"); 1660 } 1661 1662 // Make the dex2oat instruction set match that of the launching runtime. If we have multiple 1663 // architecture support, dex2oat may be compiled as a different instruction-set than that 1664 // currently being executed. 1665 std::string instruction_set("--instruction-set="); 1666 instruction_set += GetInstructionSetString(kRuntimeISA); 1667 argv->push_back(instruction_set); 1668 1669 std::unique_ptr<const InstructionSetFeatures> features(InstructionSetFeatures::FromCppDefines()); 1670 std::string feature_string("--instruction-set-features="); 1671 feature_string += features->GetFeatureString(); 1672 argv->push_back(feature_string); 1673 1674 if (Dbg::IsJdwpConfigured()) { 1675 argv->push_back("--debuggable"); 1676 } 1677} 1678 1679void Runtime::UpdateProfilerState(int state) { 1680 VLOG(profiler) << "Profiler state updated to " << state; 1681} 1682 1683void Runtime::CreateJit() { 1684 CHECK(!IsAotCompiler()); 1685 if (GetInstrumentation()->IsForcedInterpretOnly()) { 1686 // Don't create JIT if forced interpret only. 1687 return; 1688 } 1689 std::string error_msg; 1690 jit_.reset(jit::Jit::Create(jit_options_.get(), &error_msg)); 1691 if (jit_.get() != nullptr) { 1692 compiler_callbacks_ = jit_->GetCompilerCallbacks(); 1693 jit_->CreateInstrumentationCache(jit_options_->GetCompileThreshold()); 1694 jit_->CreateThreadPool(); 1695 } else { 1696 LOG(WARNING) << "Failed to create JIT " << error_msg; 1697 } 1698} 1699 1700bool Runtime::CanRelocate() const { 1701 return !IsAotCompiler() || compiler_callbacks_->IsRelocationPossible(); 1702} 1703 1704bool Runtime::IsCompilingBootImage() const { 1705 return IsCompiler() && compiler_callbacks_->IsBootImage(); 1706} 1707 1708} // namespace art 1709