runtime.cc revision 33c36d4f22ab6a5e61eb47b654deaf647c34e49c
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> 33#include <vector> 34#include <fcntl.h> 35 36#include "arch/arm/quick_method_frame_info_arm.h" 37#include "arch/arm/registers_arm.h" 38#include "arch/arm64/quick_method_frame_info_arm64.h" 39#include "arch/arm64/registers_arm64.h" 40#include "arch/mips/quick_method_frame_info_mips.h" 41#include "arch/mips/registers_mips.h" 42#include "arch/x86/quick_method_frame_info_x86.h" 43#include "arch/x86/registers_x86.h" 44#include "arch/x86_64/quick_method_frame_info_x86_64.h" 45#include "arch/x86_64/registers_x86_64.h" 46#include "atomic.h" 47#include "class_linker.h" 48#include "debugger.h" 49#include "elf_file.h" 50#include "fault_handler.h" 51#include "gc/accounting/card_table-inl.h" 52#include "gc/heap.h" 53#include "gc/space/image_space.h" 54#include "gc/space/space.h" 55#include "image.h" 56#include "instrumentation.h" 57#include "intern_table.h" 58#include "jni_internal.h" 59#include "mirror/art_field-inl.h" 60#include "mirror/art_method-inl.h" 61#include "mirror/array.h" 62#include "mirror/class-inl.h" 63#include "mirror/class_loader.h" 64#include "mirror/stack_trace_element.h" 65#include "mirror/throwable.h" 66#include "monitor.h" 67#include "native_bridge_art_interface.h" 68#include "parsed_options.h" 69#include "oat_file.h" 70#include "os.h" 71#include "quick/quick_method_frame_info.h" 72#include "reflection.h" 73#include "ScopedLocalRef.h" 74#include "scoped_thread_state_change.h" 75#include "signal_catcher.h" 76#include "signal_set.h" 77#include "handle_scope-inl.h" 78#include "thread.h" 79#include "thread_list.h" 80#include "trace.h" 81#include "transaction.h" 82#include "profiler.h" 83#include "verifier/method_verifier.h" 84#include "well_known_classes.h" 85 86#include "JniConstants.h" // Last to avoid LOG redefinition in ics-mr1-plus-art. 87 88#ifdef HAVE_ANDROID_OS 89#include "cutils/properties.h" 90#endif 91 92namespace art { 93 94static constexpr bool kEnableJavaStackTraceHandler = true; 95const char* Runtime::kDefaultInstructionSetFeatures = 96 STRINGIFY(ART_DEFAULT_INSTRUCTION_SET_FEATURES); 97Runtime* Runtime::instance_ = NULL; 98 99Runtime::Runtime() 100 : instruction_set_(kNone), 101 compiler_callbacks_(nullptr), 102 is_zygote_(false), 103 must_relocate_(false), 104 is_concurrent_gc_enabled_(true), 105 is_explicit_gc_disabled_(false), 106 dex2oat_enabled_(true), 107 image_dex2oat_enabled_(true), 108 default_stack_size_(0), 109 heap_(nullptr), 110 max_spins_before_thin_lock_inflation_(Monitor::kDefaultMaxSpinsBeforeThinLockInflation), 111 monitor_list_(nullptr), 112 monitor_pool_(nullptr), 113 thread_list_(nullptr), 114 intern_table_(nullptr), 115 class_linker_(nullptr), 116 signal_catcher_(nullptr), 117 java_vm_(nullptr), 118 fault_message_lock_("Fault message lock"), 119 fault_message_(""), 120 method_verifier_lock_("Method verifiers lock"), 121 threads_being_born_(0), 122 shutdown_cond_(new ConditionVariable("Runtime shutdown", *Locks::runtime_shutdown_lock_)), 123 shutting_down_(false), 124 shutting_down_started_(false), 125 started_(false), 126 finished_starting_(false), 127 vfprintf_(nullptr), 128 exit_(nullptr), 129 abort_(nullptr), 130 stats_enabled_(false), 131 running_on_valgrind_(RUNNING_ON_VALGRIND > 0), 132 profiler_started_(false), 133 method_trace_(false), 134 method_trace_file_size_(0), 135 instrumentation_(), 136 use_compile_time_class_path_(false), 137 main_thread_group_(nullptr), 138 system_thread_group_(nullptr), 139 system_class_loader_(nullptr), 140 dump_gc_performance_on_shutdown_(false), 141 preinitialization_transaction_(nullptr), 142 null_pointer_handler_(nullptr), 143 suspend_handler_(nullptr), 144 stack_overflow_handler_(nullptr), 145 verify_(false), 146 target_sdk_version_(0), 147 implicit_null_checks_(false), 148 implicit_so_checks_(false), 149 implicit_suspend_checks_(false), 150 native_bridge_art_callbacks_({GetMethodShorty, GetNativeMethodCount, GetNativeMethods}) { 151} 152 153Runtime::~Runtime() { 154 if (dump_gc_performance_on_shutdown_) { 155 // This can't be called from the Heap destructor below because it 156 // could call RosAlloc::InspectAll() which needs the thread_list 157 // to be still alive. 158 heap_->DumpGcPerformanceInfo(LOG(INFO)); 159 } 160 161 Thread* self = Thread::Current(); 162 { 163 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 164 shutting_down_started_ = true; 165 while (threads_being_born_ > 0) { 166 shutdown_cond_->Wait(self); 167 } 168 shutting_down_ = true; 169 } 170 // Shut down background profiler before the runtime exits. 171 if (profiler_started_) { 172 BackgroundMethodSamplingProfiler::Shutdown(); 173 } 174 175 // Shutdown the fault manager if it was initialized. 176 fault_manager.Shutdown(); 177 178 Trace::Shutdown(); 179 180 // Make sure to let the GC complete if it is running. 181 heap_->WaitForGcToComplete(gc::kGcCauseBackground, self); 182 heap_->DeleteThreadPool(); 183 184 // Make sure our internal threads are dead before we start tearing down things they're using. 185 Dbg::StopJdwp(); 186 delete signal_catcher_; 187 188 // Make sure all other non-daemon threads have terminated, and all daemon threads are suspended. 189 delete thread_list_; 190 delete monitor_list_; 191 delete monitor_pool_; 192 delete class_linker_; 193 delete heap_; 194 delete intern_table_; 195 delete java_vm_; 196 Thread::Shutdown(); 197 QuasiAtomic::Shutdown(); 198 verifier::MethodVerifier::Shutdown(); 199 // TODO: acquire a static mutex on Runtime to avoid racing. 200 CHECK(instance_ == nullptr || instance_ == this); 201 instance_ = nullptr; 202 203 delete null_pointer_handler_; 204 delete suspend_handler_; 205 delete stack_overflow_handler_; 206} 207 208struct AbortState { 209 void Dump(std::ostream& os) NO_THREAD_SAFETY_ANALYSIS { 210 if (gAborting > 1) { 211 os << "Runtime aborting --- recursively, so no thread-specific detail!\n"; 212 return; 213 } 214 gAborting++; 215 os << "Runtime aborting...\n"; 216 if (Runtime::Current() == NULL) { 217 os << "(Runtime does not yet exist!)\n"; 218 return; 219 } 220 Thread* self = Thread::Current(); 221 if (self == nullptr) { 222 os << "(Aborting thread was not attached to runtime!)\n"; 223 DumpKernelStack(os, GetTid(), " kernel: ", false); 224 DumpNativeStack(os, GetTid(), " native: ", nullptr); 225 } else { 226 os << "Aborting thread:\n"; 227 if (Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)) { 228 DumpThread(os, self); 229 } else { 230 if (Locks::mutator_lock_->SharedTryLock(self)) { 231 DumpThread(os, self); 232 Locks::mutator_lock_->SharedUnlock(self); 233 } 234 } 235 } 236 DumpAllThreads(os, self); 237 } 238 239 void DumpThread(std::ostream& os, Thread* self) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 240 self->Dump(os); 241 if (self->IsExceptionPending()) { 242 ThrowLocation throw_location; 243 mirror::Throwable* exception = self->GetException(&throw_location); 244 os << "Pending exception " << PrettyTypeOf(exception) 245 << " thrown by '" << throw_location.Dump() << "'\n" 246 << exception->Dump(); 247 } 248 } 249 250 void DumpAllThreads(std::ostream& os, Thread* self) NO_THREAD_SAFETY_ANALYSIS { 251 Runtime* runtime = Runtime::Current(); 252 if (runtime != nullptr) { 253 ThreadList* thread_list = runtime->GetThreadList(); 254 if (thread_list != nullptr) { 255 bool tll_already_held = Locks::thread_list_lock_->IsExclusiveHeld(self); 256 bool ml_already_held = Locks::mutator_lock_->IsSharedHeld(self); 257 if (!tll_already_held || !ml_already_held) { 258 os << "Dumping all threads without appropriate locks held:" 259 << (!tll_already_held ? " thread list lock" : "") 260 << (!ml_already_held ? " mutator lock" : "") 261 << "\n"; 262 } 263 os << "All threads:\n"; 264 thread_list->DumpLocked(os); 265 } 266 } 267 } 268}; 269 270void Runtime::Abort() { 271 gAborting++; // set before taking any locks 272 273 // Ensure that we don't have multiple threads trying to abort at once, 274 // which would result in significantly worse diagnostics. 275 MutexLock mu(Thread::Current(), *Locks::abort_lock_); 276 277 // Get any pending output out of the way. 278 fflush(NULL); 279 280 // Many people have difficulty distinguish aborts from crashes, 281 // so be explicit. 282 AbortState state; 283 LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state); 284 285 // Call the abort hook if we have one. 286 if (Runtime::Current() != NULL && Runtime::Current()->abort_ != NULL) { 287 LOG(INTERNAL_FATAL) << "Calling abort hook..."; 288 Runtime::Current()->abort_(); 289 // notreached 290 LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!"; 291 } 292 293#if defined(__GLIBC__) 294 // TODO: we ought to be able to use pthread_kill(3) here (or abort(3), 295 // which POSIX defines in terms of raise(3), which POSIX defines in terms 296 // of pthread_kill(3)). On Linux, though, libcorkscrew can't unwind through 297 // libpthread, which means the stacks we dump would be useless. Calling 298 // tgkill(2) directly avoids that. 299 syscall(__NR_tgkill, getpid(), GetTid(), SIGABRT); 300 // TODO: LLVM installs it's own SIGABRT handler so exit to be safe... Can we disable that in LLVM? 301 // If not, we could use sigaction(3) before calling tgkill(2) and lose this call to exit(3). 302 exit(1); 303#else 304 abort(); 305#endif 306 // notreached 307} 308 309void Runtime::PreZygoteFork() { 310 heap_->PreZygoteFork(); 311} 312 313void Runtime::CallExitHook(jint status) { 314 if (exit_ != NULL) { 315 ScopedThreadStateChange tsc(Thread::Current(), kNative); 316 exit_(status); 317 LOG(WARNING) << "Exit hook returned instead of exiting!"; 318 } 319} 320 321void Runtime::SweepSystemWeaks(IsMarkedCallback* visitor, void* arg) { 322 GetInternTable()->SweepInternTableWeaks(visitor, arg); 323 GetMonitorList()->SweepMonitorList(visitor, arg); 324 GetJavaVM()->SweepJniWeakGlobals(visitor, arg); 325} 326 327bool Runtime::Create(const RuntimeOptions& options, bool ignore_unrecognized) { 328 // TODO: acquire a static mutex on Runtime to avoid racing. 329 if (Runtime::instance_ != NULL) { 330 return false; 331 } 332 InitLogging(NULL); // Calls Locks::Init() as a side effect. 333 instance_ = new Runtime; 334 if (!instance_->Init(options, ignore_unrecognized)) { 335 delete instance_; 336 instance_ = NULL; 337 return false; 338 } 339 return true; 340} 341 342jobject CreateSystemClassLoader() { 343 if (Runtime::Current()->UseCompileTimeClassPath()) { 344 return NULL; 345 } 346 347 ScopedObjectAccess soa(Thread::Current()); 348 ClassLinker* cl = Runtime::Current()->GetClassLinker(); 349 350 StackHandleScope<3> hs(soa.Self()); 351 Handle<mirror::Class> class_loader_class( 352 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader))); 353 CHECK(cl->EnsureInitialized(class_loader_class, true, true)); 354 355 mirror::ArtMethod* getSystemClassLoader = 356 class_loader_class->FindDirectMethod("getSystemClassLoader", "()Ljava/lang/ClassLoader;"); 357 CHECK(getSystemClassLoader != NULL); 358 359 JValue result = InvokeWithJValues(soa, nullptr, soa.EncodeMethod(getSystemClassLoader), nullptr); 360 Handle<mirror::ClassLoader> class_loader( 361 hs.NewHandle(down_cast<mirror::ClassLoader*>(result.GetL()))); 362 CHECK(class_loader.Get() != nullptr); 363 JNIEnv* env = soa.Self()->GetJniEnv(); 364 ScopedLocalRef<jobject> system_class_loader(env, 365 soa.AddLocalReference<jobject>(class_loader.Get())); 366 CHECK(system_class_loader.get() != nullptr); 367 368 soa.Self()->SetClassLoaderOverride(class_loader.Get()); 369 370 Handle<mirror::Class> thread_class( 371 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread))); 372 CHECK(cl->EnsureInitialized(thread_class, true, true)); 373 374 mirror::ArtField* contextClassLoader = 375 thread_class->FindDeclaredInstanceField("contextClassLoader", "Ljava/lang/ClassLoader;"); 376 CHECK(contextClassLoader != NULL); 377 378 // We can't run in a transaction yet. 379 contextClassLoader->SetObject<false>(soa.Self()->GetPeer(), class_loader.Get()); 380 381 return env->NewGlobalRef(system_class_loader.get()); 382} 383 384std::string Runtime::GetPatchoatExecutable() const { 385 if (!patchoat_executable_.empty()) { 386 return patchoat_executable_; 387 } 388 std::string patchoat_executable_(GetAndroidRoot()); 389 patchoat_executable_ += (kIsDebugBuild ? "/bin/patchoatd" : "/bin/patchoat"); 390 return patchoat_executable_; 391} 392 393std::string Runtime::GetCompilerExecutable() const { 394 if (!compiler_executable_.empty()) { 395 return compiler_executable_; 396 } 397 std::string compiler_executable(GetAndroidRoot()); 398 compiler_executable += (kIsDebugBuild ? "/bin/dex2oatd" : "/bin/dex2oat"); 399 return compiler_executable; 400} 401 402bool Runtime::Start() { 403 VLOG(startup) << "Runtime::Start entering"; 404 405 // Restore main thread state to kNative as expected by native code. 406 Thread* self = Thread::Current(); 407 408 self->TransitionFromRunnableToSuspended(kNative); 409 410 started_ = true; 411 412 if (!IsImageDex2OatEnabled() || !Runtime::Current()->GetHeap()->HasImageSpace()) { 413 ScopedObjectAccess soa(Thread::Current()); 414 StackHandleScope<1> hs(soa.Self()); 415 auto klass(hs.NewHandle<mirror::Class>(mirror::Class::GetJavaLangClass())); 416 class_linker_->EnsureInitialized(klass, true, true); 417 } 418 419 // InitNativeMethods needs to be after started_ so that the classes 420 // it touches will have methods linked to the oat file if necessary. 421 InitNativeMethods(); 422 423 // Initialize well known thread group values that may be accessed threads while attaching. 424 InitThreadGroups(self); 425 426 Thread::FinishStartup(); 427 428 if (is_zygote_) { 429 if (!InitZygote()) { 430 return false; 431 } 432 } else { 433 DidForkFromZygote(NativeBridgeAction::kInitialize); 434 } 435 436 StartDaemonThreads(); 437 438 system_class_loader_ = CreateSystemClassLoader(); 439 440 { 441 ScopedObjectAccess soa(self); 442 self->GetJniEnv()->locals.AssertEmpty(); 443 } 444 445 VLOG(startup) << "Runtime::Start exiting"; 446 finished_starting_ = true; 447 448 if (profiler_options_.IsEnabled() && !profile_output_filename_.empty()) { 449 // User has asked for a profile using -Xenable-profiler. 450 // Create the profile file if it doesn't exist. 451 int fd = open(profile_output_filename_.c_str(), O_RDWR|O_CREAT|O_EXCL, 0660); 452 if (fd >= 0) { 453 close(fd); 454 } else if (errno != EEXIST) { 455 LOG(INFO) << "Failed to access the profile file. Profiler disabled."; 456 return true; 457 } 458 StartProfiler(profile_output_filename_.c_str()); 459 } 460 461 return true; 462} 463 464void Runtime::EndThreadBirth() EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_) { 465 DCHECK_GT(threads_being_born_, 0U); 466 threads_being_born_--; 467 if (shutting_down_started_ && threads_being_born_ == 0) { 468 shutdown_cond_->Broadcast(Thread::Current()); 469 } 470} 471 472// Do zygote-mode-only initialization. 473bool Runtime::InitZygote() { 474#ifdef __linux__ 475 // zygote goes into its own process group 476 setpgid(0, 0); 477 478 // See storage config details at http://source.android.com/tech/storage/ 479 // Create private mount namespace shared by all children 480 if (unshare(CLONE_NEWNS) == -1) { 481 PLOG(WARNING) << "Failed to unshare()"; 482 return false; 483 } 484 485 // Mark rootfs as being a slave so that changes from default 486 // namespace only flow into our children. 487 if (mount("rootfs", "/", NULL, (MS_SLAVE | MS_REC), NULL) == -1) { 488 PLOG(WARNING) << "Failed to mount() rootfs as MS_SLAVE"; 489 return false; 490 } 491 492 // Create a staging tmpfs that is shared by our children; they will 493 // bind mount storage into their respective private namespaces, which 494 // are isolated from each other. 495 const char* target_base = getenv("EMULATED_STORAGE_TARGET"); 496 if (target_base != NULL) { 497 if (mount("tmpfs", target_base, "tmpfs", MS_NOSUID | MS_NODEV, 498 "uid=0,gid=1028,mode=0751") == -1) { 499 LOG(WARNING) << "Failed to mount tmpfs to " << target_base; 500 return false; 501 } 502 } 503 504 return true; 505#else 506 UNIMPLEMENTED(FATAL); 507 return false; 508#endif 509} 510 511void Runtime::DidForkFromZygote(NativeBridgeAction action) { 512 is_zygote_ = false; 513 514 switch (action) { 515 case NativeBridgeAction::kUnload: 516 android::UnloadNativeBridge(); 517 break; 518 519 case NativeBridgeAction::kInitialize: 520 android::InitializeNativeBridge(); 521 break; 522 } 523 524 // Create the thread pool. 525 heap_->CreateThreadPool(); 526 527 StartSignalCatcher(); 528 529 // Start the JDWP thread. If the command-line debugger flags specified "suspend=y", 530 // this will pause the runtime, so we probably want this to come last. 531 Dbg::StartJdwp(); 532} 533 534void Runtime::StartSignalCatcher() { 535 if (!is_zygote_) { 536 signal_catcher_ = new SignalCatcher(stack_trace_file_); 537 } 538} 539 540bool Runtime::IsShuttingDown(Thread* self) { 541 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 542 return IsShuttingDownLocked(); 543} 544 545void Runtime::StartDaemonThreads() { 546 VLOG(startup) << "Runtime::StartDaemonThreads entering"; 547 548 Thread* self = Thread::Current(); 549 550 // Must be in the kNative state for calling native methods. 551 CHECK_EQ(self->GetState(), kNative); 552 553 JNIEnv* env = self->GetJniEnv(); 554 env->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 555 WellKnownClasses::java_lang_Daemons_start); 556 if (env->ExceptionCheck()) { 557 env->ExceptionDescribe(); 558 LOG(FATAL) << "Error starting java.lang.Daemons"; 559 } 560 561 VLOG(startup) << "Runtime::StartDaemonThreads exiting"; 562} 563 564static bool OpenDexFilesFromImage(const std::vector<std::string>& dex_filenames, 565 const std::string& image_location, 566 std::vector<const DexFile*>& dex_files, 567 size_t* failures) { 568 std::string system_filename; 569 bool has_system = false; 570 std::string cache_filename_unused; 571 bool dalvik_cache_exists_unused; 572 bool has_cache_unused; 573 bool is_global_cache_unused; 574 bool found_image = gc::space::ImageSpace::FindImageFilename(image_location.c_str(), 575 kRuntimeISA, 576 &system_filename, 577 &has_system, 578 &cache_filename_unused, 579 &dalvik_cache_exists_unused, 580 &has_cache_unused, 581 &is_global_cache_unused); 582 *failures = 0; 583 if (!found_image || !has_system) { 584 return false; 585 } 586 std::string error_msg; 587 // We are falling back to non-executable use of the oat file because patching failed, presumably 588 // due to lack of space. 589 std::string oat_filename = ImageHeader::GetOatLocationFromImageLocation(system_filename.c_str()); 590 std::string oat_location = ImageHeader::GetOatLocationFromImageLocation(image_location.c_str()); 591 std::unique_ptr<File> file(OS::OpenFileForReading(oat_filename.c_str())); 592 if (file.get() == nullptr) { 593 return false; 594 } 595 std::unique_ptr<ElfFile> elf_file(ElfFile::Open(file.release(), false, false, &error_msg)); 596 if (elf_file.get() == nullptr) { 597 return false; 598 } 599 std::unique_ptr<OatFile> oat_file(OatFile::OpenWithElfFile(elf_file.release(), oat_location, 600 &error_msg)); 601 if (oat_file.get() == nullptr) { 602 LOG(INFO) << "Unable to use '" << oat_filename << "' because " << error_msg; 603 return false; 604 } 605 606 for (const OatFile::OatDexFile* oat_dex_file : oat_file->GetOatDexFiles()) { 607 if (oat_dex_file == nullptr) { 608 *failures += 1; 609 continue; 610 } 611 const DexFile* dex_file = oat_dex_file->OpenDexFile(&error_msg); 612 if (dex_file == nullptr) { 613 *failures += 1; 614 } else { 615 dex_files.push_back(dex_file); 616 } 617 } 618 Runtime::Current()->GetClassLinker()->RegisterOatFile(oat_file.release()); 619 return true; 620} 621 622 623static size_t OpenDexFiles(const std::vector<std::string>& dex_filenames, 624 const std::string& image_location, 625 std::vector<const DexFile*>& dex_files) { 626 size_t failure_count = 0; 627 if (!image_location.empty() && OpenDexFilesFromImage(dex_filenames, image_location, dex_files, 628 &failure_count)) { 629 return failure_count; 630 } 631 failure_count = 0; 632 for (size_t i = 0; i < dex_filenames.size(); i++) { 633 const char* dex_filename = dex_filenames[i].c_str(); 634 std::string error_msg; 635 if (!OS::FileExists(dex_filename)) { 636 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 637 continue; 638 } 639 if (!DexFile::Open(dex_filename, dex_filename, &error_msg, &dex_files)) { 640 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 641 ++failure_count; 642 } 643 } 644 return failure_count; 645} 646 647bool Runtime::Init(const RuntimeOptions& raw_options, bool ignore_unrecognized) { 648 CHECK_EQ(sysconf(_SC_PAGE_SIZE), kPageSize); 649 650 std::unique_ptr<ParsedOptions> options(ParsedOptions::Create(raw_options, ignore_unrecognized)); 651 if (options.get() == nullptr) { 652 LOG(ERROR) << "Failed to parse options"; 653 return false; 654 } 655 VLOG(startup) << "Runtime::Init -verbose:startup enabled"; 656 657 QuasiAtomic::Startup(); 658 659 Monitor::Init(options->lock_profiling_threshold_, options->hook_is_sensitive_thread_); 660 661 boot_class_path_string_ = options->boot_class_path_string_; 662 class_path_string_ = options->class_path_string_; 663 properties_ = options->properties_; 664 665 compiler_callbacks_ = options->compiler_callbacks_; 666 patchoat_executable_ = options->patchoat_executable_; 667 must_relocate_ = options->must_relocate_; 668 is_zygote_ = options->is_zygote_; 669 is_explicit_gc_disabled_ = options->is_explicit_gc_disabled_; 670 dex2oat_enabled_ = options->dex2oat_enabled_; 671 image_dex2oat_enabled_ = options->image_dex2oat_enabled_; 672 673 vfprintf_ = options->hook_vfprintf_; 674 exit_ = options->hook_exit_; 675 abort_ = options->hook_abort_; 676 677 default_stack_size_ = options->stack_size_; 678 stack_trace_file_ = options->stack_trace_file_; 679 680 compiler_executable_ = options->compiler_executable_; 681 compiler_options_ = options->compiler_options_; 682 image_compiler_options_ = options->image_compiler_options_; 683 684 max_spins_before_thin_lock_inflation_ = options->max_spins_before_thin_lock_inflation_; 685 686 monitor_list_ = new MonitorList; 687 monitor_pool_ = MonitorPool::Create(); 688 thread_list_ = new ThreadList; 689 intern_table_ = new InternTable; 690 691 verify_ = options->verify_; 692 693 if (options->interpreter_only_) { 694 GetInstrumentation()->ForceInterpretOnly(); 695 } 696 697 heap_ = new gc::Heap(options->heap_initial_size_, 698 options->heap_growth_limit_, 699 options->heap_min_free_, 700 options->heap_max_free_, 701 options->heap_target_utilization_, 702 options->foreground_heap_growth_multiplier_, 703 options->heap_maximum_size_, 704 options->heap_non_moving_space_capacity_, 705 options->image_, 706 options->image_isa_, 707 options->collector_type_, 708 options->background_collector_type_, 709 options->parallel_gc_threads_, 710 options->conc_gc_threads_, 711 options->low_memory_mode_, 712 options->long_pause_log_threshold_, 713 options->long_gc_log_threshold_, 714 options->ignore_max_footprint_, 715 options->use_tlab_, 716 options->verify_pre_gc_heap_, 717 options->verify_pre_sweeping_heap_, 718 options->verify_post_gc_heap_, 719 options->verify_pre_gc_rosalloc_, 720 options->verify_pre_sweeping_rosalloc_, 721 options->verify_post_gc_rosalloc_, 722 options->use_homogeneous_space_compaction_for_oom_, 723 options->min_interval_homogeneous_space_compaction_by_oom_); 724 725 dump_gc_performance_on_shutdown_ = options->dump_gc_performance_on_shutdown_; 726 727 BlockSignals(); 728 InitPlatformSignalHandlers(); 729 730 // Change the implicit checks flags based on runtime architecture. 731 switch (kRuntimeISA) { 732 case kArm: 733 case kThumb2: 734 case kX86: 735 case kArm64: 736 case kX86_64: 737 implicit_null_checks_ = true; 738 implicit_so_checks_ = true; 739 break; 740 default: 741 // Keep the defaults. 742 break; 743 } 744 745 if (implicit_null_checks_ || implicit_so_checks_ || implicit_suspend_checks_) { 746 fault_manager.Init(); 747 748 // These need to be in a specific order. The null point check handler must be 749 // after the suspend check and stack overflow check handlers. 750 if (implicit_suspend_checks_) { 751 suspend_handler_ = new SuspensionHandler(&fault_manager); 752 } 753 754 if (implicit_so_checks_) { 755 stack_overflow_handler_ = new StackOverflowHandler(&fault_manager); 756 } 757 758 if (implicit_null_checks_) { 759 null_pointer_handler_ = new NullPointerHandler(&fault_manager); 760 } 761 762 if (kEnableJavaStackTraceHandler) { 763 new JavaStackTraceHandler(&fault_manager); 764 } 765 } 766 767 java_vm_ = new JavaVMExt(this, options.get()); 768 769 Thread::Startup(); 770 771 // ClassLinker needs an attached thread, but we can't fully attach a thread without creating 772 // objects. We can't supply a thread group yet; it will be fixed later. Since we are the main 773 // thread, we do not get a java peer. 774 Thread* self = Thread::Attach("main", false, nullptr, false); 775 CHECK_EQ(self->GetThreadId(), ThreadList::kMainThreadId); 776 CHECK(self != nullptr); 777 778 // Set us to runnable so tools using a runtime can allocate and GC by default 779 self->TransitionFromSuspendedToRunnable(); 780 781 // Now we're attached, we can take the heap locks and validate the heap. 782 GetHeap()->EnableObjectValidation(); 783 784 CHECK_GE(GetHeap()->GetContinuousSpaces().size(), 1U); 785 class_linker_ = new ClassLinker(intern_table_); 786 if (GetHeap()->HasImageSpace()) { 787 class_linker_->InitFromImage(); 788 if (kIsDebugBuild) { 789 GetHeap()->GetImageSpace()->VerifyImageAllocations(); 790 } 791 } else if (!IsCompiler() || !image_dex2oat_enabled_) { 792 std::vector<std::string> dex_filenames; 793 Split(boot_class_path_string_, ':', dex_filenames); 794 std::vector<const DexFile*> boot_class_path; 795 OpenDexFiles(dex_filenames, options->image_, boot_class_path); 796 class_linker_->InitWithoutImage(boot_class_path); 797 // TODO: Should we move the following to InitWithoutImage? 798 SetInstructionSet(kRuntimeISA); 799 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 800 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 801 if (!HasCalleeSaveMethod(type)) { 802 SetCalleeSaveMethod(CreateCalleeSaveMethod(type), type); 803 } 804 } 805 } else { 806 CHECK(options->boot_class_path_ != nullptr); 807 CHECK_NE(options->boot_class_path_->size(), 0U); 808 class_linker_->InitWithoutImage(*options->boot_class_path_); 809 } 810 CHECK(class_linker_ != nullptr); 811 verifier::MethodVerifier::Init(); 812 813 method_trace_ = options->method_trace_; 814 method_trace_file_ = options->method_trace_file_; 815 method_trace_file_size_ = options->method_trace_file_size_; 816 817 profile_output_filename_ = options->profile_output_filename_; 818 profiler_options_ = options->profiler_options_; 819 820 // TODO: move this to just be an Trace::Start argument 821 Trace::SetDefaultClockSource(options->profile_clock_source_); 822 823 if (options->method_trace_) { 824 ScopedThreadStateChange tsc(self, kWaitingForMethodTracingStart); 825 Trace::Start(options->method_trace_file_.c_str(), -1, options->method_trace_file_size_, 0, 826 false, false, 0); 827 } 828 829 // Pre-allocate an OutOfMemoryError for the double-OOME case. 830 self->ThrowNewException(ThrowLocation(), "Ljava/lang/OutOfMemoryError;", 831 "OutOfMemoryError thrown while trying to throw OutOfMemoryError; " 832 "no stack available"); 833 pre_allocated_OutOfMemoryError_ = GcRoot<mirror::Throwable>(self->GetException(NULL)); 834 self->ClearException(); 835 836 // Pre-allocate a NoClassDefFoundError for the common case of failing to find a system class 837 // ahead of checking the application's class loader. 838 self->ThrowNewException(ThrowLocation(), "Ljava/lang/NoClassDefFoundError;", 839 "Class not found using the boot class loader; no stack available"); 840 pre_allocated_NoClassDefFoundError_ = GcRoot<mirror::Throwable>(self->GetException(NULL)); 841 self->ClearException(); 842 843 // Look for a native bridge. 844 // 845 // The intended flow here is, in the case of a running system: 846 // 847 // Runtime::Init() (zygote): 848 // LoadNativeBridge -> dlopen from cmd line parameter. 849 // | 850 // V 851 // Runtime::Start() (zygote): 852 // No-op wrt native bridge. 853 // | 854 // | start app 855 // V 856 // DidForkFromZygote(action) 857 // action = kUnload -> dlclose native bridge. 858 // action = kInitialize -> initialize library 859 // 860 // 861 // The intended flow here is, in the case of a simple dalvikvm call: 862 // 863 // Runtime::Init(): 864 // LoadNativeBridge -> dlopen from cmd line parameter. 865 // | 866 // V 867 // Runtime::Start(): 868 // DidForkFromZygote(kInitialize) -> try to initialize any native bridge given. 869 // No-op wrt native bridge. 870 native_bridge_library_filename_ = options->native_bridge_library_filename_; 871 android::LoadNativeBridge(native_bridge_library_filename_.c_str(), &native_bridge_art_callbacks_); 872 VLOG(startup) << "Runtime::Setup native bridge library: " 873 << (native_bridge_library_filename_.empty() ? 874 "(empty)" : native_bridge_library_filename_); 875 876 VLOG(startup) << "Runtime::Init exiting"; 877 return true; 878} 879 880void Runtime::InitNativeMethods() { 881 VLOG(startup) << "Runtime::InitNativeMethods entering"; 882 Thread* self = Thread::Current(); 883 JNIEnv* env = self->GetJniEnv(); 884 885 // Must be in the kNative state for calling native methods (JNI_OnLoad code). 886 CHECK_EQ(self->GetState(), kNative); 887 888 // First set up JniConstants, which is used by both the runtime's built-in native 889 // methods and libcore. 890 JniConstants::init(env); 891 WellKnownClasses::Init(env); 892 893 // Then set up the native methods provided by the runtime itself. 894 RegisterRuntimeNativeMethods(env); 895 896 // Then set up libcore, which is just a regular JNI library with a regular JNI_OnLoad. 897 // Most JNI libraries can just use System.loadLibrary, but libcore can't because it's 898 // the library that implements System.loadLibrary! 899 { 900 std::string mapped_name(StringPrintf(OS_SHARED_LIB_FORMAT_STR, "javacore")); 901 std::string reason; 902 self->TransitionFromSuspendedToRunnable(); 903 StackHandleScope<1> hs(self); 904 auto class_loader(hs.NewHandle<mirror::ClassLoader>(nullptr)); 905 if (!instance_->java_vm_->LoadNativeLibrary(mapped_name, class_loader, &reason)) { 906 LOG(FATAL) << "LoadNativeLibrary failed for \"" << mapped_name << "\": " << reason; 907 } 908 self->TransitionFromRunnableToSuspended(kNative); 909 } 910 911 // Initialize well known classes that may invoke runtime native methods. 912 WellKnownClasses::LateInit(env); 913 914 VLOG(startup) << "Runtime::InitNativeMethods exiting"; 915} 916 917void Runtime::InitThreadGroups(Thread* self) { 918 JNIEnvExt* env = self->GetJniEnv(); 919 ScopedJniEnvLocalRefState env_state(env); 920 main_thread_group_ = 921 env->NewGlobalRef(env->GetStaticObjectField( 922 WellKnownClasses::java_lang_ThreadGroup, 923 WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup)); 924 CHECK(main_thread_group_ != NULL || IsCompiler()); 925 system_thread_group_ = 926 env->NewGlobalRef(env->GetStaticObjectField( 927 WellKnownClasses::java_lang_ThreadGroup, 928 WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup)); 929 CHECK(system_thread_group_ != NULL || IsCompiler()); 930} 931 932jobject Runtime::GetMainThreadGroup() const { 933 CHECK(main_thread_group_ != NULL || IsCompiler()); 934 return main_thread_group_; 935} 936 937jobject Runtime::GetSystemThreadGroup() const { 938 CHECK(system_thread_group_ != NULL || IsCompiler()); 939 return system_thread_group_; 940} 941 942jobject Runtime::GetSystemClassLoader() const { 943 CHECK(system_class_loader_ != NULL || IsCompiler()); 944 return system_class_loader_; 945} 946 947void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) { 948#define REGISTER(FN) extern void FN(JNIEnv*); FN(env) 949 // Register Throwable first so that registration of other native methods can throw exceptions 950 REGISTER(register_java_lang_Throwable); 951 REGISTER(register_dalvik_system_DexFile); 952 REGISTER(register_dalvik_system_VMDebug); 953 REGISTER(register_dalvik_system_VMRuntime); 954 REGISTER(register_dalvik_system_VMStack); 955 REGISTER(register_dalvik_system_ZygoteHooks); 956 REGISTER(register_java_lang_Class); 957 REGISTER(register_java_lang_DexCache); 958 REGISTER(register_java_lang_Object); 959 REGISTER(register_java_lang_Runtime); 960 REGISTER(register_java_lang_String); 961 REGISTER(register_java_lang_System); 962 REGISTER(register_java_lang_Thread); 963 REGISTER(register_java_lang_VMClassLoader); 964 REGISTER(register_java_lang_ref_FinalizerReference); 965 REGISTER(register_java_lang_ref_Reference); 966 REGISTER(register_java_lang_reflect_Array); 967 REGISTER(register_java_lang_reflect_Constructor); 968 REGISTER(register_java_lang_reflect_Field); 969 REGISTER(register_java_lang_reflect_Method); 970 REGISTER(register_java_lang_reflect_Proxy); 971 REGISTER(register_java_util_concurrent_atomic_AtomicLong); 972 REGISTER(register_org_apache_harmony_dalvik_ddmc_DdmServer); 973 REGISTER(register_org_apache_harmony_dalvik_ddmc_DdmVmInternal); 974 REGISTER(register_sun_misc_Unsafe); 975#undef REGISTER 976} 977 978void Runtime::DumpForSigQuit(std::ostream& os) { 979 GetClassLinker()->DumpForSigQuit(os); 980 GetInternTable()->DumpForSigQuit(os); 981 GetJavaVM()->DumpForSigQuit(os); 982 GetHeap()->DumpForSigQuit(os); 983 TrackedAllocators::Dump(os); 984 os << "\n"; 985 986 thread_list_->DumpForSigQuit(os); 987 BaseMutex::DumpAll(os); 988} 989 990void Runtime::DumpLockHolders(std::ostream& os) { 991 uint64_t mutator_lock_owner = Locks::mutator_lock_->GetExclusiveOwnerTid(); 992 pid_t thread_list_lock_owner = GetThreadList()->GetLockOwner(); 993 pid_t classes_lock_owner = GetClassLinker()->GetClassesLockOwner(); 994 pid_t dex_lock_owner = GetClassLinker()->GetDexLockOwner(); 995 if ((thread_list_lock_owner | classes_lock_owner | dex_lock_owner) != 0) { 996 os << "Mutator lock exclusive owner tid: " << mutator_lock_owner << "\n" 997 << "ThreadList lock owner tid: " << thread_list_lock_owner << "\n" 998 << "ClassLinker classes lock owner tid: " << classes_lock_owner << "\n" 999 << "ClassLinker dex lock owner tid: " << dex_lock_owner << "\n"; 1000 } 1001} 1002 1003void Runtime::SetStatsEnabled(bool new_state, bool suspended) { 1004 if (new_state == true) { 1005 GetStats()->Clear(~0); 1006 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1007 Thread::Current()->GetStats()->Clear(~0); 1008 GetInstrumentation()->InstrumentQuickAllocEntryPoints(suspended); 1009 } else { 1010 GetInstrumentation()->UninstrumentQuickAllocEntryPoints(suspended); 1011 } 1012 stats_enabled_ = new_state; 1013} 1014 1015void Runtime::ResetStats(int kinds) { 1016 GetStats()->Clear(kinds & 0xffff); 1017 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1018 Thread::Current()->GetStats()->Clear(kinds >> 16); 1019} 1020 1021int32_t Runtime::GetStat(int kind) { 1022 RuntimeStats* stats; 1023 if (kind < (1<<16)) { 1024 stats = GetStats(); 1025 } else { 1026 stats = Thread::Current()->GetStats(); 1027 kind >>= 16; 1028 } 1029 switch (kind) { 1030 case KIND_ALLOCATED_OBJECTS: 1031 return stats->allocated_objects; 1032 case KIND_ALLOCATED_BYTES: 1033 return stats->allocated_bytes; 1034 case KIND_FREED_OBJECTS: 1035 return stats->freed_objects; 1036 case KIND_FREED_BYTES: 1037 return stats->freed_bytes; 1038 case KIND_GC_INVOCATIONS: 1039 return stats->gc_for_alloc_count; 1040 case KIND_CLASS_INIT_COUNT: 1041 return stats->class_init_count; 1042 case KIND_CLASS_INIT_TIME: 1043 // Convert ns to us, reduce to 32 bits. 1044 return static_cast<int>(stats->class_init_time_ns / 1000); 1045 case KIND_EXT_ALLOCATED_OBJECTS: 1046 case KIND_EXT_ALLOCATED_BYTES: 1047 case KIND_EXT_FREED_OBJECTS: 1048 case KIND_EXT_FREED_BYTES: 1049 return 0; // backward compatibility 1050 default: 1051 LOG(FATAL) << "Unknown statistic " << kind; 1052 return -1; // unreachable 1053 } 1054} 1055 1056void Runtime::BlockSignals() { 1057 SignalSet signals; 1058 signals.Add(SIGPIPE); 1059 // SIGQUIT is used to dump the runtime's state (including stack traces). 1060 signals.Add(SIGQUIT); 1061 // SIGUSR1 is used to initiate a GC. 1062 signals.Add(SIGUSR1); 1063 signals.Block(); 1064} 1065 1066bool Runtime::AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group, 1067 bool create_peer) { 1068 return Thread::Attach(thread_name, as_daemon, thread_group, create_peer) != NULL; 1069} 1070 1071void Runtime::DetachCurrentThread() { 1072 Thread* self = Thread::Current(); 1073 if (self == NULL) { 1074 LOG(FATAL) << "attempting to detach thread that is not attached"; 1075 } 1076 if (self->HasManagedStack()) { 1077 LOG(FATAL) << *Thread::Current() << " attempting to detach while still running code"; 1078 } 1079 thread_list_->Unregister(self); 1080} 1081 1082mirror::Throwable* Runtime::GetPreAllocatedOutOfMemoryError() { 1083 mirror::Throwable* oome = pre_allocated_OutOfMemoryError_.Read(); 1084 if (oome == nullptr) { 1085 LOG(ERROR) << "Failed to return pre-allocated OOME"; 1086 } 1087 return oome; 1088} 1089 1090mirror::Throwable* Runtime::GetPreAllocatedNoClassDefFoundError() { 1091 mirror::Throwable* ncdfe = pre_allocated_NoClassDefFoundError_.Read(); 1092 if (ncdfe == nullptr) { 1093 LOG(ERROR) << "Failed to return pre-allocated NoClassDefFoundError"; 1094 } 1095 return ncdfe; 1096} 1097 1098void Runtime::VisitConstantRoots(RootCallback* callback, void* arg) { 1099 // Visit the classes held as static in mirror classes, these can be visited concurrently and only 1100 // need to be visited once per GC since they never change. 1101 mirror::ArtField::VisitRoots(callback, arg); 1102 mirror::ArtMethod::VisitRoots(callback, arg); 1103 mirror::Class::VisitRoots(callback, arg); 1104 mirror::Reference::VisitRoots(callback, arg); 1105 mirror::StackTraceElement::VisitRoots(callback, arg); 1106 mirror::String::VisitRoots(callback, arg); 1107 mirror::Throwable::VisitRoots(callback, arg); 1108 // Visit all the primitive array types classes. 1109 mirror::PrimitiveArray<uint8_t>::VisitRoots(callback, arg); // BooleanArray 1110 mirror::PrimitiveArray<int8_t>::VisitRoots(callback, arg); // ByteArray 1111 mirror::PrimitiveArray<uint16_t>::VisitRoots(callback, arg); // CharArray 1112 mirror::PrimitiveArray<double>::VisitRoots(callback, arg); // DoubleArray 1113 mirror::PrimitiveArray<float>::VisitRoots(callback, arg); // FloatArray 1114 mirror::PrimitiveArray<int32_t>::VisitRoots(callback, arg); // IntArray 1115 mirror::PrimitiveArray<int64_t>::VisitRoots(callback, arg); // LongArray 1116 mirror::PrimitiveArray<int16_t>::VisitRoots(callback, arg); // ShortArray 1117} 1118 1119void Runtime::VisitConcurrentRoots(RootCallback* callback, void* arg, VisitRootFlags flags) { 1120 intern_table_->VisitRoots(callback, arg, flags); 1121 class_linker_->VisitRoots(callback, arg, flags); 1122 if ((flags & kVisitRootFlagNewRoots) == 0) { 1123 // Guaranteed to have no new roots in the constant roots. 1124 VisitConstantRoots(callback, arg); 1125 } 1126} 1127 1128void Runtime::VisitNonThreadRoots(RootCallback* callback, void* arg) { 1129 java_vm_->VisitRoots(callback, arg); 1130 if (!pre_allocated_OutOfMemoryError_.IsNull()) { 1131 pre_allocated_OutOfMemoryError_.VisitRoot(callback, arg, 0, kRootVMInternal); 1132 DCHECK(!pre_allocated_OutOfMemoryError_.IsNull()); 1133 } 1134 resolution_method_.VisitRoot(callback, arg, 0, kRootVMInternal); 1135 DCHECK(!resolution_method_.IsNull()); 1136 if (!pre_allocated_NoClassDefFoundError_.IsNull()) { 1137 pre_allocated_NoClassDefFoundError_.VisitRoot(callback, arg, 0, kRootVMInternal); 1138 DCHECK(!pre_allocated_NoClassDefFoundError_.IsNull()); 1139 } 1140 if (HasImtConflictMethod()) { 1141 imt_conflict_method_.VisitRoot(callback, arg, 0, kRootVMInternal); 1142 } 1143 if (HasDefaultImt()) { 1144 default_imt_.VisitRoot(callback, arg, 0, kRootVMInternal); 1145 } 1146 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 1147 if (!callee_save_methods_[i].IsNull()) { 1148 callee_save_methods_[i].VisitRoot(callback, arg, 0, kRootVMInternal); 1149 } 1150 } 1151 verifier::MethodVerifier::VisitStaticRoots(callback, arg); 1152 { 1153 MutexLock mu(Thread::Current(), method_verifier_lock_); 1154 for (verifier::MethodVerifier* verifier : method_verifiers_) { 1155 verifier->VisitRoots(callback, arg); 1156 } 1157 } 1158 if (preinitialization_transaction_ != nullptr) { 1159 preinitialization_transaction_->VisitRoots(callback, arg); 1160 } 1161 instrumentation_.VisitRoots(callback, arg); 1162} 1163 1164void Runtime::VisitNonConcurrentRoots(RootCallback* callback, void* arg) { 1165 thread_list_->VisitRoots(callback, arg); 1166 VisitNonThreadRoots(callback, arg); 1167} 1168 1169void Runtime::VisitRoots(RootCallback* callback, void* arg, VisitRootFlags flags) { 1170 VisitNonConcurrentRoots(callback, arg); 1171 VisitConcurrentRoots(callback, arg, flags); 1172} 1173 1174mirror::ObjectArray<mirror::ArtMethod>* Runtime::CreateDefaultImt(ClassLinker* cl) { 1175 Thread* self = Thread::Current(); 1176 StackHandleScope<1> hs(self); 1177 Handle<mirror::ObjectArray<mirror::ArtMethod>> imtable( 1178 hs.NewHandle(cl->AllocArtMethodArray(self, 64))); 1179 mirror::ArtMethod* imt_conflict_method = Runtime::Current()->GetImtConflictMethod(); 1180 for (size_t i = 0; i < static_cast<size_t>(imtable->GetLength()); i++) { 1181 imtable->Set<false>(i, imt_conflict_method); 1182 } 1183 return imtable.Get(); 1184} 1185 1186mirror::ArtMethod* Runtime::CreateImtConflictMethod() { 1187 Thread* self = Thread::Current(); 1188 Runtime* runtime = Runtime::Current(); 1189 ClassLinker* class_linker = runtime->GetClassLinker(); 1190 StackHandleScope<1> hs(self); 1191 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self))); 1192 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod()); 1193 // TODO: use a special method for imt conflict method saves. 1194 method->SetDexMethodIndex(DexFile::kDexNoIndex); 1195 // When compiling, the code pointer will get set later when the image is loaded. 1196 if (runtime->IsCompiler()) { 1197#if defined(ART_USE_PORTABLE_COMPILER) 1198 method->SetEntryPointFromPortableCompiledCode(nullptr); 1199#endif 1200 method->SetEntryPointFromQuickCompiledCode(nullptr); 1201 } else { 1202#if defined(ART_USE_PORTABLE_COMPILER) 1203 method->SetEntryPointFromPortableCompiledCode(class_linker->GetPortableImtConflictTrampoline()); 1204#endif 1205 method->SetEntryPointFromQuickCompiledCode(class_linker->GetQuickImtConflictTrampoline()); 1206 } 1207 return method.Get(); 1208} 1209 1210mirror::ArtMethod* Runtime::CreateResolutionMethod() { 1211 Thread* self = Thread::Current(); 1212 Runtime* runtime = Runtime::Current(); 1213 ClassLinker* class_linker = runtime->GetClassLinker(); 1214 StackHandleScope<1> hs(self); 1215 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self))); 1216 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod()); 1217 // TODO: use a special method for resolution method saves 1218 method->SetDexMethodIndex(DexFile::kDexNoIndex); 1219 // When compiling, the code pointer will get set later when the image is loaded. 1220 if (runtime->IsCompiler()) { 1221#if defined(ART_USE_PORTABLE_COMPILER) 1222 method->SetEntryPointFromPortableCompiledCode(nullptr); 1223#endif 1224 method->SetEntryPointFromQuickCompiledCode(nullptr); 1225 } else { 1226#if defined(ART_USE_PORTABLE_COMPILER) 1227 method->SetEntryPointFromPortableCompiledCode(class_linker->GetPortableResolutionTrampoline()); 1228#endif 1229 method->SetEntryPointFromQuickCompiledCode(class_linker->GetQuickResolutionTrampoline()); 1230 } 1231 return method.Get(); 1232} 1233 1234mirror::ArtMethod* Runtime::CreateCalleeSaveMethod(CalleeSaveType type) { 1235 Thread* self = Thread::Current(); 1236 Runtime* runtime = Runtime::Current(); 1237 ClassLinker* class_linker = runtime->GetClassLinker(); 1238 StackHandleScope<1> hs(self); 1239 Handle<mirror::ArtMethod> method(hs.NewHandle(class_linker->AllocArtMethod(self))); 1240 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod()); 1241 // TODO: use a special method for callee saves 1242 method->SetDexMethodIndex(DexFile::kDexNoIndex); 1243#if defined(ART_USE_PORTABLE_COMPILER) 1244 method->SetEntryPointFromPortableCompiledCode(nullptr); 1245#endif 1246 method->SetEntryPointFromQuickCompiledCode(nullptr); 1247 DCHECK_NE(instruction_set_, kNone); 1248 return method.Get(); 1249} 1250 1251void Runtime::DisallowNewSystemWeaks() { 1252 monitor_list_->DisallowNewMonitors(); 1253 intern_table_->DisallowNewInterns(); 1254 java_vm_->DisallowNewWeakGlobals(); 1255} 1256 1257void Runtime::AllowNewSystemWeaks() { 1258 monitor_list_->AllowNewMonitors(); 1259 intern_table_->AllowNewInterns(); 1260 java_vm_->AllowNewWeakGlobals(); 1261} 1262 1263void Runtime::SetInstructionSet(InstructionSet instruction_set) { 1264 instruction_set_ = instruction_set; 1265 if ((instruction_set_ == kThumb2) || (instruction_set_ == kArm)) { 1266 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1267 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1268 callee_save_method_frame_infos_[i] = arm::ArmCalleeSaveMethodFrameInfo(type); 1269 } 1270 } else if (instruction_set_ == kMips) { 1271 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1272 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1273 callee_save_method_frame_infos_[i] = mips::MipsCalleeSaveMethodFrameInfo(type); 1274 } 1275 } else if (instruction_set_ == kX86) { 1276 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1277 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1278 callee_save_method_frame_infos_[i] = x86::X86CalleeSaveMethodFrameInfo(type); 1279 } 1280 } else if (instruction_set_ == kX86_64) { 1281 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1282 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1283 callee_save_method_frame_infos_[i] = x86_64::X86_64CalleeSaveMethodFrameInfo(type); 1284 } 1285 } else if (instruction_set_ == kArm64) { 1286 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1287 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1288 callee_save_method_frame_infos_[i] = arm64::Arm64CalleeSaveMethodFrameInfo(type); 1289 } 1290 } else { 1291 UNIMPLEMENTED(FATAL) << instruction_set_; 1292 } 1293} 1294 1295void Runtime::SetCalleeSaveMethod(mirror::ArtMethod* method, CalleeSaveType type) { 1296 DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType)); 1297 callee_save_methods_[type] = GcRoot<mirror::ArtMethod>(method); 1298} 1299 1300const std::vector<const DexFile*>& Runtime::GetCompileTimeClassPath(jobject class_loader) { 1301 if (class_loader == NULL) { 1302 return GetClassLinker()->GetBootClassPath(); 1303 } 1304 CHECK(UseCompileTimeClassPath()); 1305 CompileTimeClassPaths::const_iterator it = compile_time_class_paths_.find(class_loader); 1306 CHECK(it != compile_time_class_paths_.end()); 1307 return it->second; 1308} 1309 1310void Runtime::SetCompileTimeClassPath(jobject class_loader, 1311 std::vector<const DexFile*>& class_path) { 1312 CHECK(!IsStarted()); 1313 use_compile_time_class_path_ = true; 1314 compile_time_class_paths_.Put(class_loader, class_path); 1315} 1316 1317void Runtime::AddMethodVerifier(verifier::MethodVerifier* verifier) { 1318 DCHECK(verifier != nullptr); 1319 MutexLock mu(Thread::Current(), method_verifier_lock_); 1320 method_verifiers_.insert(verifier); 1321} 1322 1323void Runtime::RemoveMethodVerifier(verifier::MethodVerifier* verifier) { 1324 DCHECK(verifier != nullptr); 1325 MutexLock mu(Thread::Current(), method_verifier_lock_); 1326 auto it = method_verifiers_.find(verifier); 1327 CHECK(it != method_verifiers_.end()); 1328 method_verifiers_.erase(it); 1329} 1330 1331void Runtime::StartProfiler(const char* profile_output_filename) { 1332 profile_output_filename_ = profile_output_filename; 1333 profiler_started_ = 1334 BackgroundMethodSamplingProfiler::Start(profile_output_filename_, profiler_options_); 1335} 1336 1337// Transaction support. 1338void Runtime::EnterTransactionMode(Transaction* transaction) { 1339 DCHECK(IsCompiler()); 1340 DCHECK(transaction != nullptr); 1341 DCHECK(!IsActiveTransaction()); 1342 preinitialization_transaction_ = transaction; 1343} 1344 1345void Runtime::ExitTransactionMode() { 1346 DCHECK(IsCompiler()); 1347 DCHECK(IsActiveTransaction()); 1348 preinitialization_transaction_ = nullptr; 1349} 1350 1351void Runtime::RecordWriteField32(mirror::Object* obj, MemberOffset field_offset, 1352 uint32_t value, bool is_volatile) const { 1353 DCHECK(IsCompiler()); 1354 DCHECK(IsActiveTransaction()); 1355 preinitialization_transaction_->RecordWriteField32(obj, field_offset, value, is_volatile); 1356} 1357 1358void Runtime::RecordWriteField64(mirror::Object* obj, MemberOffset field_offset, 1359 uint64_t value, bool is_volatile) const { 1360 DCHECK(IsCompiler()); 1361 DCHECK(IsActiveTransaction()); 1362 preinitialization_transaction_->RecordWriteField64(obj, field_offset, value, is_volatile); 1363} 1364 1365void Runtime::RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset, 1366 mirror::Object* value, bool is_volatile) const { 1367 DCHECK(IsCompiler()); 1368 DCHECK(IsActiveTransaction()); 1369 preinitialization_transaction_->RecordWriteFieldReference(obj, field_offset, value, is_volatile); 1370} 1371 1372void Runtime::RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const { 1373 DCHECK(IsCompiler()); 1374 DCHECK(IsActiveTransaction()); 1375 preinitialization_transaction_->RecordWriteArray(array, index, value); 1376} 1377 1378void Runtime::RecordStrongStringInsertion(mirror::String* s) const { 1379 DCHECK(IsCompiler()); 1380 DCHECK(IsActiveTransaction()); 1381 preinitialization_transaction_->RecordStrongStringInsertion(s); 1382} 1383 1384void Runtime::RecordWeakStringInsertion(mirror::String* s) const { 1385 DCHECK(IsCompiler()); 1386 DCHECK(IsActiveTransaction()); 1387 preinitialization_transaction_->RecordWeakStringInsertion(s); 1388} 1389 1390void Runtime::RecordStrongStringRemoval(mirror::String* s) const { 1391 DCHECK(IsCompiler()); 1392 DCHECK(IsActiveTransaction()); 1393 preinitialization_transaction_->RecordStrongStringRemoval(s); 1394} 1395 1396void Runtime::RecordWeakStringRemoval(mirror::String* s) const { 1397 DCHECK(IsCompiler()); 1398 DCHECK(IsActiveTransaction()); 1399 preinitialization_transaction_->RecordWeakStringRemoval(s); 1400} 1401 1402void Runtime::SetFaultMessage(const std::string& message) { 1403 MutexLock mu(Thread::Current(), fault_message_lock_); 1404 fault_message_ = message; 1405} 1406 1407void Runtime::AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* argv) 1408 const { 1409 if (GetInstrumentation()->InterpretOnly()) { 1410 argv->push_back("--compiler-filter=interpret-only"); 1411 } 1412 1413 // Make the dex2oat instruction set match that of the launching runtime. If we have multiple 1414 // architecture support, dex2oat may be compiled as a different instruction-set than that 1415 // currently being executed. 1416 std::string instruction_set("--instruction-set="); 1417 instruction_set += GetInstructionSetString(kRuntimeISA); 1418 argv->push_back(instruction_set); 1419 1420 std::string features("--instruction-set-features="); 1421 features += GetDefaultInstructionSetFeatures(); 1422 argv->push_back(features); 1423} 1424 1425void Runtime::UpdateProfilerState(int state) { 1426 VLOG(profiler) << "Profiler state updated to " << state; 1427} 1428} // namespace art 1429