dex2oat.cc revision ffb939a0709ccb100d450e6e30d4c1ca85132163
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 <stdio.h> 18#include <stdlib.h> 19#include <sys/stat.h> 20#include <valgrind.h> 21 22#include <fstream> 23#include <iostream> 24#include <sstream> 25#include <string> 26#include <vector> 27 28#include "base/stl_util.h" 29#include "base/stringpiece.h" 30#include "base/timing_logger.h" 31#include "base/unix_file/fd_file.h" 32#include "class_linker.h" 33#include "compiler_backend.h" 34#include "compiler_callbacks.h" 35#include "dex_file-inl.h" 36#include "dex/verification_results.h" 37#include "driver/compiler_callbacks_impl.h" 38#include "driver/compiler_driver.h" 39#include "driver/compiler_options.h" 40#include "elf_fixup.h" 41#include "elf_stripper.h" 42#include "gc/space/image_space.h" 43#include "gc/space/space-inl.h" 44#include "image_writer.h" 45#include "leb128.h" 46#include "mirror/art_method-inl.h" 47#include "mirror/class-inl.h" 48#include "mirror/class_loader.h" 49#include "mirror/object-inl.h" 50#include "mirror/object_array-inl.h" 51#include "oat_writer.h" 52#include "object_utils.h" 53#include "os.h" 54#include "runtime.h" 55#include "ScopedLocalRef.h" 56#include "scoped_thread_state_change.h" 57#include "vector_output_stream.h" 58#include "well_known_classes.h" 59#include "zip_archive.h" 60 61namespace art { 62 63static int original_argc; 64static char** original_argv; 65 66static std::string CommandLine() { 67 std::vector<std::string> command; 68 for (int i = 0; i < original_argc; ++i) { 69 command.push_back(original_argv[i]); 70 } 71 return Join(command, ' '); 72} 73 74static void UsageErrorV(const char* fmt, va_list ap) { 75 std::string error; 76 StringAppendV(&error, fmt, ap); 77 LOG(ERROR) << error; 78} 79 80static void UsageError(const char* fmt, ...) { 81 va_list ap; 82 va_start(ap, fmt); 83 UsageErrorV(fmt, ap); 84 va_end(ap); 85} 86 87static void Usage(const char* fmt, ...) { 88 va_list ap; 89 va_start(ap, fmt); 90 UsageErrorV(fmt, ap); 91 va_end(ap); 92 93 UsageError("Command: %s", CommandLine().c_str()); 94 95 UsageError("Usage: dex2oat [options]..."); 96 UsageError(""); 97 UsageError(" --dex-file=<dex-file>: specifies a .dex file to compile."); 98 UsageError(" Example: --dex-file=/system/framework/core.jar"); 99 UsageError(""); 100 UsageError(" --zip-fd=<file-descriptor>: specifies a file descriptor of a zip file"); 101 UsageError(" containing a classes.dex file to compile."); 102 UsageError(" Example: --zip-fd=5"); 103 UsageError(""); 104 UsageError(" --zip-location=<zip-location>: specifies a symbolic name for the file"); 105 UsageError(" corresponding to the file descriptor specified by --zip-fd."); 106 UsageError(" Example: --zip-location=/system/app/Calculator.apk"); 107 UsageError(""); 108 UsageError(" --oat-file=<file.oat>: specifies the oat output destination via a filename."); 109 UsageError(" Example: --oat-file=/system/framework/boot.oat"); 110 UsageError(""); 111 UsageError(" --oat-fd=<number>: specifies the oat output destination via a file descriptor."); 112 UsageError(" Example: --oat-file=/system/framework/boot.oat"); 113 UsageError(""); 114 UsageError(" --oat-location=<oat-name>: specifies a symbolic name for the file corresponding"); 115 UsageError(" to the file descriptor specified by --oat-fd."); 116 UsageError(" Example: --oat-location=/data/dalvik-cache/system@app@Calculator.apk.oat"); 117 UsageError(""); 118 UsageError(" --oat-symbols=<file.oat>: specifies the oat output destination with full symbols."); 119 UsageError(" Example: --oat-symbols=/symbols/system/framework/boot.oat"); 120 UsageError(""); 121 UsageError(" --bitcode=<file.bc>: specifies the optional bitcode filename."); 122 UsageError(" Example: --bitcode=/system/framework/boot.bc"); 123 UsageError(""); 124 UsageError(" --image=<file.art>: specifies the output image filename."); 125 UsageError(" Example: --image=/system/framework/boot.art"); 126 UsageError(""); 127 UsageError(" --image-classes=<classname-file>: specifies classes to include in an image."); 128 UsageError(" Example: --image=frameworks/base/preloaded-classes"); 129 UsageError(""); 130 UsageError(" --base=<hex-address>: specifies the base address when creating a boot image."); 131 UsageError(" Example: --base=0x50000000"); 132 UsageError(""); 133 UsageError(" --boot-image=<file.art>: provide the image file for the boot class path."); 134 UsageError(" Example: --boot-image=/system/framework/boot.art"); 135 UsageError(" Default: $ANDROID_ROOT/system/framework/boot.art"); 136 UsageError(""); 137 UsageError(" --android-root=<path>: used to locate libraries for portable linking."); 138 UsageError(" Example: --android-root=out/host/linux-x86"); 139 UsageError(" Default: $ANDROID_ROOT"); 140 UsageError(""); 141 UsageError(" --instruction-set=(arm|mips|x86|x86_64): compile for a particular instruction"); 142 UsageError(" set."); 143 UsageError(" Example: --instruction-set=x86"); 144 UsageError(" Default: arm"); 145 UsageError(""); 146 UsageError(" --instruction-set-features=...,: Specify instruction set features"); 147 UsageError(" Example: --instruction-set-features=div"); 148 UsageError(" Default: default"); 149 UsageError(""); 150 UsageError(" --compiler-backend=(Quick|QuickGBC|Portable): select compiler backend"); 151 UsageError(" set."); 152 UsageError(" Example: --compiler-backend=Portable"); 153 UsageError(" Default: Quick"); 154 UsageError(""); 155 UsageError(" --compiler-filter=(interpret-only|space|balanced|speed|everything): select"); 156 UsageError(" compiler filter."); 157 UsageError(" Example: --compiler-filter=everything"); 158#if ART_SMALL_MODE 159 UsageError(" Default: interpret-only"); 160#else 161 UsageError(" Default: speed"); 162#endif 163 UsageError(""); 164 UsageError(" --huge-method-max=<method-instruction-count>: the threshold size for a huge"); 165 UsageError(" method for compiler filter tuning."); 166 UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold); 167 UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold); 168 UsageError(""); 169 UsageError(" --huge-method-max=<method-instruction-count>: threshold size for a huge"); 170 UsageError(" method for compiler filter tuning."); 171 UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold); 172 UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold); 173 UsageError(""); 174 UsageError(" --large-method-max=<method-instruction-count>: threshold size for a large"); 175 UsageError(" method for compiler filter tuning."); 176 UsageError(" Example: --large-method-max=%d", CompilerOptions::kDefaultLargeMethodThreshold); 177 UsageError(" Default: %d", CompilerOptions::kDefaultLargeMethodThreshold); 178 UsageError(""); 179 UsageError(" --small-method-max=<method-instruction-count>: threshold size for a small"); 180 UsageError(" method for compiler filter tuning."); 181 UsageError(" Example: --small-method-max=%d", CompilerOptions::kDefaultSmallMethodThreshold); 182 UsageError(" Default: %d", CompilerOptions::kDefaultSmallMethodThreshold); 183 UsageError(""); 184 UsageError(" --tiny-method-max=<method-instruction-count>: threshold size for a tiny"); 185 UsageError(" method for compiler filter tuning."); 186 UsageError(" Example: --tiny-method-max=%d", CompilerOptions::kDefaultTinyMethodThreshold); 187 UsageError(" Default: %d", CompilerOptions::kDefaultTinyMethodThreshold); 188 UsageError(""); 189 UsageError(" --num-dex-methods=<method-count>: threshold size for a small dex file for"); 190 UsageError(" compiler filter tuning. If the input has fewer than this many methods"); 191 UsageError(" and the filter is not interpret-only, overrides the filter to use speed"); 192 UsageError(" Example: --num-dex-method=%d", CompilerOptions::kDefaultNumDexMethodsThreshold); 193 UsageError(" Default: %d", CompilerOptions::kDefaultNumDexMethodsThreshold); 194 UsageError(""); 195 UsageError(" --host: used with Portable backend to link against host runtime libraries"); 196 UsageError(""); 197 UsageError(" --dump-timing: display a breakdown of where time was spent"); 198 UsageError(""); 199 UsageError(" --runtime-arg <argument>: used to specify various arguments for the runtime,"); 200 UsageError(" such as initial heap size, maximum heap size, and verbose output."); 201 UsageError(" Use a separate --runtime-arg switch for each argument."); 202 UsageError(" Example: --runtime-arg -Xms256m"); 203 UsageError(""); 204 UsageError(" --profile-file=<filename>: specify profiler output file to use for compilation."); 205 UsageError(""); 206 std::cerr << "See log for usage error information\n"; 207 exit(EXIT_FAILURE); 208} 209 210class Dex2Oat { 211 public: 212 static bool Create(Dex2Oat** p_dex2oat, 213 const Runtime::Options& runtime_options, 214 const CompilerOptions& compiler_options, 215 CompilerBackend::Kind compiler_backend, 216 InstructionSet instruction_set, 217 InstructionSetFeatures instruction_set_features, 218 VerificationResults* verification_results, 219 DexFileToMethodInlinerMap* method_inliner_map, 220 size_t thread_count) 221 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_) { 222 CHECK(verification_results != nullptr); 223 CHECK(method_inliner_map != nullptr); 224 UniquePtr<Dex2Oat> dex2oat(new Dex2Oat(&compiler_options, 225 compiler_backend, 226 instruction_set, 227 instruction_set_features, 228 verification_results, 229 method_inliner_map, 230 thread_count)); 231 if (!dex2oat->CreateRuntime(runtime_options, instruction_set)) { 232 *p_dex2oat = NULL; 233 return false; 234 } 235 *p_dex2oat = dex2oat.release(); 236 return true; 237 } 238 239 ~Dex2Oat() { 240 delete runtime_; 241 LogCompletionTime(); 242 } 243 244 void LogCompletionTime() { 245 LOG(INFO) << "dex2oat took " << PrettyDuration(NanoTime() - start_ns_) 246 << " (threads: " << thread_count_ << ")"; 247 } 248 249 250 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 251 CompilerDriver::DescriptorSet* ReadImageClassesFromFile(const char* image_classes_filename) { 252 UniquePtr<std::ifstream> image_classes_file(new std::ifstream(image_classes_filename, 253 std::ifstream::in)); 254 if (image_classes_file.get() == NULL) { 255 LOG(ERROR) << "Failed to open image classes file " << image_classes_filename; 256 return NULL; 257 } 258 UniquePtr<CompilerDriver::DescriptorSet> result(ReadImageClasses(*image_classes_file.get())); 259 image_classes_file->close(); 260 return result.release(); 261 } 262 263 CompilerDriver::DescriptorSet* ReadImageClasses(std::istream& image_classes_stream) { 264 UniquePtr<CompilerDriver::DescriptorSet> image_classes(new CompilerDriver::DescriptorSet); 265 while (image_classes_stream.good()) { 266 std::string dot; 267 std::getline(image_classes_stream, dot); 268 if (StartsWith(dot, "#") || dot.empty()) { 269 continue; 270 } 271 std::string descriptor(DotToDescriptor(dot.c_str())); 272 image_classes->insert(descriptor); 273 } 274 return image_classes.release(); 275 } 276 277 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 278 CompilerDriver::DescriptorSet* ReadImageClassesFromZip(const char* zip_filename, 279 const char* image_classes_filename, 280 std::string* error_msg) { 281 UniquePtr<ZipArchive> zip_archive(ZipArchive::Open(zip_filename, error_msg)); 282 if (zip_archive.get() == NULL) { 283 return NULL; 284 } 285 UniquePtr<ZipEntry> zip_entry(zip_archive->Find(image_classes_filename, error_msg)); 286 if (zip_entry.get() == NULL) { 287 *error_msg = StringPrintf("Failed to find '%s' within '%s': %s", image_classes_filename, 288 zip_filename, error_msg->c_str()); 289 return NULL; 290 } 291 UniquePtr<MemMap> image_classes_file(zip_entry->ExtractToMemMap(image_classes_filename, 292 error_msg)); 293 if (image_classes_file.get() == NULL) { 294 *error_msg = StringPrintf("Failed to extract '%s' from '%s': %s", image_classes_filename, 295 zip_filename, error_msg->c_str()); 296 return NULL; 297 } 298 const std::string image_classes_string(reinterpret_cast<char*>(image_classes_file->Begin()), 299 image_classes_file->Size()); 300 std::istringstream image_classes_stream(image_classes_string); 301 return ReadImageClasses(image_classes_stream); 302 } 303 304 const CompilerDriver* CreateOatFile(const std::string& boot_image_option, 305 const std::string& android_root, 306 bool is_host, 307 const std::vector<const DexFile*>& dex_files, 308 File* oat_file, 309 const std::string& bitcode_filename, 310 bool image, 311 UniquePtr<CompilerDriver::DescriptorSet>& image_classes, 312 bool dump_stats, 313 bool dump_passes, 314 TimingLogger& timings, 315 CumulativeLogger& compiler_phases_timings, 316 std::string profile_file) { 317 // SirtRef and ClassLoader creation needs to come after Runtime::Create 318 jobject class_loader = NULL; 319 Thread* self = Thread::Current(); 320 if (!boot_image_option.empty()) { 321 ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 322 std::vector<const DexFile*> class_path_files(dex_files); 323 OpenClassPathFiles(runtime_->GetClassPathString(), class_path_files); 324 ScopedObjectAccess soa(self); 325 for (size_t i = 0; i < class_path_files.size(); i++) { 326 class_linker->RegisterDexFile(*class_path_files[i]); 327 } 328 soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader); 329 ScopedLocalRef<jobject> class_loader_local(soa.Env(), 330 soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader)); 331 class_loader = soa.Env()->NewGlobalRef(class_loader_local.get()); 332 Runtime::Current()->SetCompileTimeClassPath(class_loader, class_path_files); 333 } 334 335 UniquePtr<CompilerDriver> driver(new CompilerDriver(compiler_options_, 336 verification_results_, 337 method_inliner_map_, 338 compiler_backend_, 339 instruction_set_, 340 instruction_set_features_, 341 image, 342 image_classes.release(), 343 thread_count_, 344 dump_stats, 345 dump_passes, 346 &compiler_phases_timings, 347 profile_file)); 348 349 driver->GetCompilerBackend()->SetBitcodeFileName(*driver.get(), bitcode_filename); 350 351 driver->CompileAll(class_loader, dex_files, &timings); 352 353 timings.NewSplit("dex2oat OatWriter"); 354 std::string image_file_location; 355 uint32_t image_file_location_oat_checksum = 0; 356 uintptr_t image_file_location_oat_data_begin = 0; 357 if (!driver->IsImage()) { 358 TimingLogger::ScopedSplit split("Loading image checksum", &timings); 359 gc::space::ImageSpace* image_space = Runtime::Current()->GetHeap()->GetImageSpace(); 360 image_file_location_oat_checksum = image_space->GetImageHeader().GetOatChecksum(); 361 image_file_location_oat_data_begin = 362 reinterpret_cast<uintptr_t>(image_space->GetImageHeader().GetOatDataBegin()); 363 image_file_location = image_space->GetImageFilename(); 364 } 365 366 OatWriter oat_writer(dex_files, 367 image_file_location_oat_checksum, 368 image_file_location_oat_data_begin, 369 image_file_location, 370 driver.get(), 371 &timings); 372 373 TimingLogger::ScopedSplit split("Writing ELF", &timings); 374 if (!driver->WriteElf(android_root, is_host, dex_files, &oat_writer, oat_file)) { 375 LOG(ERROR) << "Failed to write ELF file " << oat_file->GetPath(); 376 return NULL; 377 } 378 379 return driver.release(); 380 } 381 382 bool CreateImageFile(const std::string& image_filename, 383 uintptr_t image_base, 384 const std::string& oat_filename, 385 const std::string& oat_location, 386 const CompilerDriver& compiler) 387 LOCKS_EXCLUDED(Locks::mutator_lock_) { 388 uintptr_t oat_data_begin; 389 { 390 // ImageWriter is scoped so it can free memory before doing FixupElf 391 ImageWriter image_writer(compiler); 392 if (!image_writer.Write(image_filename, image_base, oat_filename, oat_location)) { 393 LOG(ERROR) << "Failed to create image file " << image_filename; 394 return false; 395 } 396 oat_data_begin = image_writer.GetOatDataBegin(); 397 } 398 399 UniquePtr<File> oat_file(OS::OpenFileReadWrite(oat_filename.c_str())); 400 if (oat_file.get() == NULL) { 401 PLOG(ERROR) << "Failed to open ELF file: " << oat_filename; 402 return false; 403 } 404 if (!ElfFixup::Fixup(oat_file.get(), oat_data_begin)) { 405 LOG(ERROR) << "Failed to fixup ELF file " << oat_file->GetPath(); 406 return false; 407 } 408 return true; 409 } 410 411 private: 412 explicit Dex2Oat(const CompilerOptions* compiler_options, 413 CompilerBackend::Kind compiler_backend, 414 InstructionSet instruction_set, 415 InstructionSetFeatures instruction_set_features, 416 VerificationResults* verification_results, 417 DexFileToMethodInlinerMap* method_inliner_map, 418 size_t thread_count) 419 : compiler_options_(compiler_options), 420 compiler_backend_(compiler_backend), 421 instruction_set_(instruction_set), 422 instruction_set_features_(instruction_set_features), 423 verification_results_(verification_results), 424 method_inliner_map_(method_inliner_map), 425 runtime_(nullptr), 426 thread_count_(thread_count), 427 start_ns_(NanoTime()) { 428 CHECK(compiler_options != nullptr); 429 CHECK(verification_results != nullptr); 430 CHECK(method_inliner_map != nullptr); 431 } 432 433 bool CreateRuntime(const Runtime::Options& runtime_options, InstructionSet instruction_set) 434 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_) { 435 if (!Runtime::Create(runtime_options, false)) { 436 LOG(ERROR) << "Failed to create runtime"; 437 return false; 438 } 439 Runtime* runtime = Runtime::Current(); 440 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 441 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 442 if (!runtime->HasCalleeSaveMethod(type)) { 443 runtime->SetCalleeSaveMethod(runtime->CreateCalleeSaveMethod(instruction_set, type), type); 444 } 445 } 446 runtime->GetClassLinker()->FixupDexCaches(runtime->GetResolutionMethod()); 447 runtime_ = runtime; 448 return true; 449 } 450 451 // Appends to dex_files any elements of class_path that it doesn't already 452 // contain. This will open those dex files as necessary. 453 static void OpenClassPathFiles(const std::string& class_path, 454 std::vector<const DexFile*>& dex_files) { 455 std::vector<std::string> parsed; 456 Split(class_path, ':', parsed); 457 // Take Locks::mutator_lock_ so that lock ordering on the ClassLinker::dex_lock_ is maintained. 458 ScopedObjectAccess soa(Thread::Current()); 459 for (size_t i = 0; i < parsed.size(); ++i) { 460 if (DexFilesContains(dex_files, parsed[i])) { 461 continue; 462 } 463 std::string error_msg; 464 const DexFile* dex_file = DexFile::Open(parsed[i].c_str(), parsed[i].c_str(), &error_msg); 465 if (dex_file == NULL) { 466 LOG(WARNING) << "Failed to open dex file '" << parsed[i] << "': " << error_msg; 467 } else { 468 dex_files.push_back(dex_file); 469 } 470 } 471 } 472 473 // Returns true if dex_files has a dex with the named location. 474 static bool DexFilesContains(const std::vector<const DexFile*>& dex_files, 475 const std::string& location) { 476 for (size_t i = 0; i < dex_files.size(); ++i) { 477 if (dex_files[i]->GetLocation() == location) { 478 return true; 479 } 480 } 481 return false; 482 } 483 484 const CompilerOptions* const compiler_options_; 485 const CompilerBackend::Kind compiler_backend_; 486 487 const InstructionSet instruction_set_; 488 const InstructionSetFeatures instruction_set_features_; 489 490 VerificationResults* const verification_results_; 491 DexFileToMethodInlinerMap* const method_inliner_map_; 492 Runtime* runtime_; 493 size_t thread_count_; 494 uint64_t start_ns_; 495 496 DISALLOW_IMPLICIT_CONSTRUCTORS(Dex2Oat); 497}; 498 499static bool ParseInt(const char* in, int* out) { 500 char* end; 501 int result = strtol(in, &end, 10); 502 if (in == end || *end != '\0') { 503 return false; 504 } 505 *out = result; 506 return true; 507} 508 509static size_t OpenDexFiles(const std::vector<const char*>& dex_filenames, 510 const std::vector<const char*>& dex_locations, 511 std::vector<const DexFile*>& dex_files) { 512 size_t failure_count = 0; 513 for (size_t i = 0; i < dex_filenames.size(); i++) { 514 const char* dex_filename = dex_filenames[i]; 515 const char* dex_location = dex_locations[i]; 516 ATRACE_BEGIN(StringPrintf("Opening dex file '%s'", dex_filenames[i]).c_str()); 517 std::string error_msg; 518 if (!OS::FileExists(dex_filename)) { 519 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 520 continue; 521 } 522 const DexFile* dex_file = DexFile::Open(dex_filename, dex_location, &error_msg); 523 if (dex_file == NULL) { 524 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 525 ++failure_count; 526 } else { 527 dex_files.push_back(dex_file); 528 } 529 ATRACE_END(); 530 } 531 return failure_count; 532} 533 534// The primary goal of the watchdog is to prevent stuck build servers 535// during development when fatal aborts lead to a cascade of failures 536// that result in a deadlock. 537class WatchDog { 538// WatchDog defines its own CHECK_PTHREAD_CALL to avoid using Log which uses locks 539#undef CHECK_PTHREAD_CALL 540#define CHECK_WATCH_DOG_PTHREAD_CALL(call, args, what) \ 541 do { \ 542 int rc = call args; \ 543 if (rc != 0) { \ 544 errno = rc; \ 545 std::string message(# call); \ 546 message += " failed for "; \ 547 message += reason; \ 548 Fatal(message); \ 549 } \ 550 } while (false) 551 552 public: 553 explicit WatchDog(bool is_watch_dog_enabled) { 554 is_watch_dog_enabled_ = is_watch_dog_enabled; 555 if (!is_watch_dog_enabled_) { 556 return; 557 } 558 shutting_down_ = false; 559 const char* reason = "dex2oat watch dog thread startup"; 560 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_init, (&mutex_, NULL), reason); 561 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_init, (&cond_, NULL), reason); 562 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_init, (&attr_), reason); 563 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_create, (&pthread_, &attr_, &CallBack, this), reason); 564 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_destroy, (&attr_), reason); 565 } 566 ~WatchDog() { 567 if (!is_watch_dog_enabled_) { 568 return; 569 } 570 const char* reason = "dex2oat watch dog thread shutdown"; 571 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 572 shutting_down_ = true; 573 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_signal, (&cond_), reason); 574 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 575 576 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_join, (pthread_, NULL), reason); 577 578 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_destroy, (&cond_), reason); 579 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_destroy, (&mutex_), reason); 580 } 581 582 private: 583 static void* CallBack(void* arg) { 584 WatchDog* self = reinterpret_cast<WatchDog*>(arg); 585 ::art::SetThreadName("dex2oat watch dog"); 586 self->Wait(); 587 return NULL; 588 } 589 590 static void Message(char severity, const std::string& message) { 591 // TODO: Remove when we switch to LOG when we can guarantee it won't prevent shutdown in error 592 // cases. 593 fprintf(stderr, "dex2oat%s %c %d %d %s\n", 594 kIsDebugBuild ? "d" : "", 595 severity, 596 getpid(), 597 GetTid(), 598 message.c_str()); 599 } 600 601 static void Warn(const std::string& message) { 602 Message('W', message); 603 } 604 605 static void Fatal(const std::string& message) { 606 Message('F', message); 607 exit(1); 608 } 609 610 void Wait() { 611 bool warning = true; 612 CHECK_GT(kWatchDogTimeoutSeconds, kWatchDogWarningSeconds); 613 // TODO: tune the multiplier for GC verification, the following is just to make the timeout 614 // large. 615 int64_t multiplier = kVerifyObjectSupport > kVerifyObjectModeFast ? 100 : 1; 616 timespec warning_ts; 617 InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogWarningSeconds * 1000, 0, &warning_ts); 618 timespec timeout_ts; 619 InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogTimeoutSeconds * 1000, 0, &timeout_ts); 620 const char* reason = "dex2oat watch dog thread waiting"; 621 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 622 while (!shutting_down_) { 623 int rc = TEMP_FAILURE_RETRY(pthread_cond_timedwait(&cond_, &mutex_, 624 warning ? &warning_ts 625 : &timeout_ts)); 626 if (rc == ETIMEDOUT) { 627 std::string message(StringPrintf("dex2oat did not finish after %d seconds", 628 warning ? kWatchDogWarningSeconds 629 : kWatchDogTimeoutSeconds)); 630 if (warning) { 631 Warn(message.c_str()); 632 warning = false; 633 } else { 634 Fatal(message.c_str()); 635 } 636 } else if (rc != 0) { 637 std::string message(StringPrintf("pthread_cond_timedwait failed: %s", 638 strerror(errno))); 639 Fatal(message.c_str()); 640 } 641 } 642 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 643 } 644 645 // When setting timeouts, keep in mind that the build server may not be as fast as your desktop. 646#if ART_USE_PORTABLE_COMPILER 647 static const unsigned int kWatchDogWarningSeconds = 2 * 60; // 2 minutes. 648 static const unsigned int kWatchDogTimeoutSeconds = 30 * 60; // 25 minutes + buffer. 649#else 650 static const unsigned int kWatchDogWarningSeconds = 1 * 60; // 1 minute. 651 static const unsigned int kWatchDogTimeoutSeconds = 6 * 60; // 5 minutes + buffer. 652#endif 653 654 bool is_watch_dog_enabled_; 655 bool shutting_down_; 656 // TODO: Switch to Mutex when we can guarantee it won't prevent shutdown in error cases. 657 pthread_mutex_t mutex_; 658 pthread_cond_t cond_; 659 pthread_attr_t attr_; 660 pthread_t pthread_; 661}; 662const unsigned int WatchDog::kWatchDogWarningSeconds; 663const unsigned int WatchDog::kWatchDogTimeoutSeconds; 664 665// Given a set of instruction features from the build, parse it. The 666// input 'str' is a comma separated list of feature names. Parse it and 667// return the InstructionSetFeatures object. 668static InstructionSetFeatures ParseFeatureList(std::string str) { 669 InstructionSetFeatures result; 670 typedef std::vector<std::string> FeatureList; 671 FeatureList features; 672 Split(str, ',', features); 673 for (FeatureList::iterator i = features.begin(); i != features.end(); i++) { 674 std::string feature = Trim(*i); 675 if (feature == "default") { 676 // Nothing to do. 677 } else if (feature == "div") { 678 // Supports divide instruction. 679 result.SetHasDivideInstruction(true); 680 } else if (feature == "nodiv") { 681 // Turn off support for divide instruction. 682 result.SetHasDivideInstruction(false); 683 } else { 684 Usage("Unknown instruction set feature: '%s'", feature.c_str()); 685 } 686 } 687 // others... 688 return result; 689} 690 691static int dex2oat(int argc, char** argv) { 692 original_argc = argc; 693 original_argv = argv; 694 695 TimingLogger timings("compiler", false, false); 696 CumulativeLogger compiler_phases_timings("compilation times"); 697 698 InitLogging(argv); 699 700 // Skip over argv[0]. 701 argv++; 702 argc--; 703 704 if (argc == 0) { 705 Usage("No arguments specified"); 706 } 707 708 std::vector<const char*> dex_filenames; 709 std::vector<const char*> dex_locations; 710 int zip_fd = -1; 711 std::string zip_location; 712 std::string oat_filename; 713 std::string oat_symbols; 714 std::string oat_location; 715 int oat_fd = -1; 716 std::string bitcode_filename; 717 const char* image_classes_zip_filename = NULL; 718 const char* image_classes_filename = NULL; 719 std::string image_filename; 720 std::string boot_image_filename; 721 uintptr_t image_base = 0; 722 std::string android_root; 723 std::vector<const char*> runtime_args; 724 int thread_count = sysconf(_SC_NPROCESSORS_CONF); 725 CompilerBackend::Kind compiler_backend = kUsePortableCompiler 726 ? CompilerBackend::kPortable 727 : CompilerBackend::kQuick; 728 const char* compiler_filter_string = NULL; 729 int huge_method_threshold = CompilerOptions::kDefaultHugeMethodThreshold; 730 int large_method_threshold = CompilerOptions::kDefaultLargeMethodThreshold; 731 int small_method_threshold = CompilerOptions::kDefaultSmallMethodThreshold; 732 int tiny_method_threshold = CompilerOptions::kDefaultTinyMethodThreshold; 733 int num_dex_methods_threshold = CompilerOptions::kDefaultNumDexMethodsThreshold; 734 735 // Take the default set of instruction features from the build. 736 InstructionSetFeatures instruction_set_features = 737 ParseFeatureList(STRINGIFY(ART_DEFAULT_INSTRUCTION_SET_FEATURES)); 738 739#if defined(__arm__) 740 InstructionSet instruction_set = kThumb2; 741#elif defined(__aarch64__) 742 InstructionSet instruction_set = kArm64; 743#elif defined(__i386__) 744 InstructionSet instruction_set = kX86; 745#elif defined(__x86_64__) 746 InstructionSet instruction_set = kX86_64; 747#elif defined(__mips__) 748 InstructionSet instruction_set = kMips; 749#else 750 InstructionSet instruction_set = kNone; 751#endif 752 753 // Profile file to use 754 std::string profile_file; 755 756 bool is_host = false; 757 bool dump_stats = false; 758 bool dump_timing = false; 759 bool dump_passes = false; 760 bool dump_slow_timing = kIsDebugBuild; 761 bool watch_dog_enabled = !kIsTargetBuild; 762 bool generate_gdb_information = kIsDebugBuild; 763 764 for (int i = 0; i < argc; i++) { 765 const StringPiece option(argv[i]); 766 bool log_options = false; 767 if (log_options) { 768 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 769 } 770 if (option.starts_with("--dex-file=")) { 771 dex_filenames.push_back(option.substr(strlen("--dex-file=")).data()); 772 } else if (option.starts_with("--dex-location=")) { 773 dex_locations.push_back(option.substr(strlen("--dex-location=")).data()); 774 } else if (option.starts_with("--zip-fd=")) { 775 const char* zip_fd_str = option.substr(strlen("--zip-fd=")).data(); 776 if (!ParseInt(zip_fd_str, &zip_fd)) { 777 Usage("Failed to parse --zip-fd argument '%s' as an integer", zip_fd_str); 778 } 779 if (zip_fd < 0) { 780 Usage("--zip-fd passed a negative value %d", zip_fd); 781 } 782 } else if (option.starts_with("--zip-location=")) { 783 zip_location = option.substr(strlen("--zip-location=")).data(); 784 } else if (option.starts_with("--oat-file=")) { 785 oat_filename = option.substr(strlen("--oat-file=")).data(); 786 } else if (option.starts_with("--oat-symbols=")) { 787 oat_symbols = option.substr(strlen("--oat-symbols=")).data(); 788 } else if (option.starts_with("--oat-fd=")) { 789 const char* oat_fd_str = option.substr(strlen("--oat-fd=")).data(); 790 if (!ParseInt(oat_fd_str, &oat_fd)) { 791 Usage("Failed to parse --oat-fd argument '%s' as an integer", oat_fd_str); 792 } 793 if (oat_fd < 0) { 794 Usage("--oat-fd passed a negative value %d", oat_fd); 795 } 796 } else if (option == "--watch-dog") { 797 watch_dog_enabled = true; 798 } else if (option == "--no-watch-dog") { 799 watch_dog_enabled = false; 800 } else if (option == "--gen-gdb-info") { 801 generate_gdb_information = true; 802 } else if (option == "--no-gen-gdb-info") { 803 generate_gdb_information = false; 804 } else if (option.starts_with("-j")) { 805 const char* thread_count_str = option.substr(strlen("-j")).data(); 806 if (!ParseInt(thread_count_str, &thread_count)) { 807 Usage("Failed to parse -j argument '%s' as an integer", thread_count_str); 808 } 809 } else if (option.starts_with("--oat-location=")) { 810 oat_location = option.substr(strlen("--oat-location=")).data(); 811 } else if (option.starts_with("--bitcode=")) { 812 bitcode_filename = option.substr(strlen("--bitcode=")).data(); 813 } else if (option.starts_with("--image=")) { 814 image_filename = option.substr(strlen("--image=")).data(); 815 } else if (option.starts_with("--image-classes=")) { 816 image_classes_filename = option.substr(strlen("--image-classes=")).data(); 817 } else if (option.starts_with("--image-classes-zip=")) { 818 image_classes_zip_filename = option.substr(strlen("--image-classes-zip=")).data(); 819 } else if (option.starts_with("--base=")) { 820 const char* image_base_str = option.substr(strlen("--base=")).data(); 821 char* end; 822 image_base = strtoul(image_base_str, &end, 16); 823 if (end == image_base_str || *end != '\0') { 824 Usage("Failed to parse hexadecimal value for option %s", option.data()); 825 } 826 } else if (option.starts_with("--boot-image=")) { 827 boot_image_filename = option.substr(strlen("--boot-image=")).data(); 828 } else if (option.starts_with("--android-root=")) { 829 android_root = option.substr(strlen("--android-root=")).data(); 830 } else if (option.starts_with("--instruction-set=")) { 831 StringPiece instruction_set_str = option.substr(strlen("--instruction-set=")).data(); 832 if (instruction_set_str == "arm") { 833 instruction_set = kThumb2; 834 } else if (instruction_set_str == "mips") { 835 instruction_set = kMips; 836 } else if (instruction_set_str == "x86") { 837 instruction_set = kX86; 838 } else if (instruction_set_str == "x86_64") { 839 instruction_set = kX86_64; 840 } 841 } else if (option.starts_with("--instruction-set-features=")) { 842 StringPiece str = option.substr(strlen("--instruction-set-features=")).data(); 843 instruction_set_features = ParseFeatureList(str.as_string()); 844 } else if (option.starts_with("--compiler-backend=")) { 845 StringPiece backend_str = option.substr(strlen("--compiler-backend=")).data(); 846 if (backend_str == "Quick") { 847 compiler_backend = CompilerBackend::kQuick; 848 } else if (backend_str == "Portable") { 849 compiler_backend = CompilerBackend::kPortable; 850 } 851 } else if (option.starts_with("--compiler-filter=")) { 852 compiler_filter_string = option.substr(strlen("--compiler-filter=")).data(); 853 } else if (option.starts_with("--huge-method-max=")) { 854 const char* threshold = option.substr(strlen("--huge-method-max=")).data(); 855 if (!ParseInt(threshold, &huge_method_threshold)) { 856 Usage("Failed to parse --huge-method-max '%s' as an integer", threshold); 857 } 858 if (huge_method_threshold < 0) { 859 Usage("--huge-method-max passed a negative value %s", huge_method_threshold); 860 } 861 } else if (option.starts_with("--large-method-max=")) { 862 const char* threshold = option.substr(strlen("--large-method-max=")).data(); 863 if (!ParseInt(threshold, &large_method_threshold)) { 864 Usage("Failed to parse --large-method-max '%s' as an integer", threshold); 865 } 866 if (large_method_threshold < 0) { 867 Usage("--large-method-max passed a negative value %s", large_method_threshold); 868 } 869 } else if (option.starts_with("--small-method-max=")) { 870 const char* threshold = option.substr(strlen("--small-method-max=")).data(); 871 if (!ParseInt(threshold, &small_method_threshold)) { 872 Usage("Failed to parse --small-method-max '%s' as an integer", threshold); 873 } 874 if (small_method_threshold < 0) { 875 Usage("--small-method-max passed a negative value %s", small_method_threshold); 876 } 877 } else if (option.starts_with("--tiny-method-max=")) { 878 const char* threshold = option.substr(strlen("--tiny-method-max=")).data(); 879 if (!ParseInt(threshold, &tiny_method_threshold)) { 880 Usage("Failed to parse --tiny-method-max '%s' as an integer", threshold); 881 } 882 if (tiny_method_threshold < 0) { 883 Usage("--tiny-method-max passed a negative value %s", tiny_method_threshold); 884 } 885 } else if (option.starts_with("--num-dex-methods=")) { 886 const char* threshold = option.substr(strlen("--num-dex-methods=")).data(); 887 if (!ParseInt(threshold, &num_dex_methods_threshold)) { 888 Usage("Failed to parse --num-dex-methods '%s' as an integer", threshold); 889 } 890 if (num_dex_methods_threshold < 0) { 891 Usage("--num-dex-methods passed a negative value %s", num_dex_methods_threshold); 892 } 893 } else if (option == "--host") { 894 is_host = true; 895 } else if (option == "--runtime-arg") { 896 if (++i >= argc) { 897 Usage("Missing required argument for --runtime-arg"); 898 } 899 if (log_options) { 900 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 901 } 902 runtime_args.push_back(argv[i]); 903 } else if (option == "--dump-timing") { 904 dump_timing = true; 905 } else if (option == "--dump-passes") { 906 dump_passes = true; 907 } else if (option == "--dump-stats") { 908 dump_stats = true; 909 } else if (option.starts_with("--profile-file=")) { 910 profile_file = option.substr(strlen("--profile-file=")).data(); 911 VLOG(compiler) << "dex2oat: profile file is " << profile_file; 912 } else if (option == "--no-profile-file") { 913 LOG(INFO) << "dex2oat: no profile file supplied (explictly)"; 914 // No profile 915 } else { 916 Usage("Unknown argument %s", option.data()); 917 } 918 } 919 920 if (oat_filename.empty() && oat_fd == -1) { 921 Usage("Output must be supplied with either --oat-file or --oat-fd"); 922 } 923 924 if (!oat_filename.empty() && oat_fd != -1) { 925 Usage("--oat-file should not be used with --oat-fd"); 926 } 927 928 if (!oat_symbols.empty() && oat_fd != -1) { 929 Usage("--oat-symbols should not be used with --oat-fd"); 930 } 931 932 if (!oat_symbols.empty() && is_host) { 933 Usage("--oat-symbols should not be used with --host"); 934 } 935 936 if (oat_fd != -1 && !image_filename.empty()) { 937 Usage("--oat-fd should not be used with --image"); 938 } 939 940 if (android_root.empty()) { 941 const char* android_root_env_var = getenv("ANDROID_ROOT"); 942 if (android_root_env_var == NULL) { 943 Usage("--android-root unspecified and ANDROID_ROOT not set"); 944 } 945 android_root += android_root_env_var; 946 } 947 948 bool image = (!image_filename.empty()); 949 if (!image && boot_image_filename.empty()) { 950 boot_image_filename += GetAndroidRoot(); 951 boot_image_filename += "/framework/boot.art"; 952 } 953 std::string boot_image_option; 954 if (!boot_image_filename.empty()) { 955 boot_image_option += "-Ximage:"; 956 boot_image_option += boot_image_filename; 957 } 958 959 if (image_classes_filename != NULL && !image) { 960 Usage("--image-classes should only be used with --image"); 961 } 962 963 if (image_classes_filename != NULL && !boot_image_option.empty()) { 964 Usage("--image-classes should not be used with --boot-image"); 965 } 966 967 if (image_classes_zip_filename != NULL && image_classes_filename == NULL) { 968 Usage("--image-classes-zip should be used with --image-classes"); 969 } 970 971 if (dex_filenames.empty() && zip_fd == -1) { 972 Usage("Input must be supplied with either --dex-file or --zip-fd"); 973 } 974 975 if (!dex_filenames.empty() && zip_fd != -1) { 976 Usage("--dex-file should not be used with --zip-fd"); 977 } 978 979 if (!dex_filenames.empty() && !zip_location.empty()) { 980 Usage("--dex-file should not be used with --zip-location"); 981 } 982 983 if (dex_locations.empty()) { 984 for (size_t i = 0; i < dex_filenames.size(); i++) { 985 dex_locations.push_back(dex_filenames[i]); 986 } 987 } else if (dex_locations.size() != dex_filenames.size()) { 988 Usage("--dex-location arguments do not match --dex-file arguments"); 989 } 990 991 if (zip_fd != -1 && zip_location.empty()) { 992 Usage("--zip-location should be supplied with --zip-fd"); 993 } 994 995 if (boot_image_option.empty()) { 996 if (image_base == 0) { 997 Usage("Non-zero --base not specified"); 998 } 999 } 1000 1001 std::string oat_stripped(oat_filename); 1002 std::string oat_unstripped; 1003 if (!oat_symbols.empty()) { 1004 oat_unstripped += oat_symbols; 1005 } else { 1006 oat_unstripped += oat_filename; 1007 } 1008 1009 if (compiler_filter_string == NULL) { 1010 if (instruction_set == kX86_64) { 1011 // TODO: currently x86-64 is only interpreted. 1012 compiler_filter_string = "interpret-only"; 1013 } else if (image) { 1014 compiler_filter_string = "speed"; 1015 } else { 1016#if ART_SMALL_MODE 1017 compiler_filter_string = "interpret-only"; 1018#else 1019 compiler_filter_string = "speed"; 1020#endif 1021 } 1022 } 1023 CHECK(compiler_filter_string != nullptr); 1024 CompilerOptions::CompilerFilter compiler_filter = CompilerOptions::kDefaultCompilerFilter; 1025 if (strcmp(compiler_filter_string, "interpret-only") == 0) { 1026 compiler_filter = CompilerOptions::kInterpretOnly; 1027 } else if (strcmp(compiler_filter_string, "space") == 0) { 1028 compiler_filter = CompilerOptions::kSpace; 1029 } else if (strcmp(compiler_filter_string, "balanced") == 0) { 1030 compiler_filter = CompilerOptions::kBalanced; 1031 } else if (strcmp(compiler_filter_string, "speed") == 0) { 1032 compiler_filter = CompilerOptions::kSpeed; 1033 } else if (strcmp(compiler_filter_string, "everything") == 0) { 1034 compiler_filter = CompilerOptions::kEverything; 1035 } else { 1036 Usage("Unknown --compiler-filter value %s", compiler_filter_string); 1037 } 1038 1039 CompilerOptions compiler_options(compiler_filter, 1040 huge_method_threshold, 1041 large_method_threshold, 1042 small_method_threshold, 1043 tiny_method_threshold, 1044 num_dex_methods_threshold, 1045 generate_gdb_information 1046#ifdef ART_SEA_IR_MODE 1047 , compiler_options.sea_ir_ = true; 1048#endif 1049 ); // NOLINT(whitespace/parens) 1050 1051 // Done with usage checks, enable watchdog if requested 1052 WatchDog watch_dog(watch_dog_enabled); 1053 1054 // Check early that the result of compilation can be written 1055 UniquePtr<File> oat_file; 1056 bool create_file = !oat_unstripped.empty(); // as opposed to using open file descriptor 1057 if (create_file) { 1058 oat_file.reset(OS::CreateEmptyFile(oat_unstripped.c_str())); 1059 if (oat_location.empty()) { 1060 oat_location = oat_filename; 1061 } 1062 } else { 1063 oat_file.reset(new File(oat_fd, oat_location)); 1064 oat_file->DisableAutoClose(); 1065 } 1066 if (oat_file.get() == NULL) { 1067 PLOG(ERROR) << "Failed to create oat file: " << oat_location; 1068 return EXIT_FAILURE; 1069 } 1070 if (create_file && fchmod(oat_file->Fd(), 0644) != 0) { 1071 PLOG(ERROR) << "Failed to make oat file world readable: " << oat_location; 1072 return EXIT_FAILURE; 1073 } 1074 1075 timings.StartSplit("dex2oat Setup"); 1076 LOG(INFO) << "dex2oat: " << CommandLine(); 1077 1078 Runtime::Options runtime_options; 1079 std::vector<const DexFile*> boot_class_path; 1080 if (boot_image_option.empty()) { 1081 size_t failure_count = OpenDexFiles(dex_filenames, dex_locations, boot_class_path); 1082 if (failure_count > 0) { 1083 LOG(ERROR) << "Failed to open some dex files: " << failure_count; 1084 return EXIT_FAILURE; 1085 } 1086 runtime_options.push_back(std::make_pair("bootclasspath", &boot_class_path)); 1087 } else { 1088 runtime_options.push_back(std::make_pair(boot_image_option.c_str(), 1089 reinterpret_cast<void*>(NULL))); 1090 } 1091 for (size_t i = 0; i < runtime_args.size(); i++) { 1092 runtime_options.push_back(std::make_pair(runtime_args[i], reinterpret_cast<void*>(NULL))); 1093 } 1094 1095 VerificationResults verification_results(&compiler_options); 1096 DexFileToMethodInlinerMap method_inliner_map; 1097 CompilerCallbacksImpl callbacks(&verification_results, &method_inliner_map); 1098 runtime_options.push_back(std::make_pair("compilercallbacks", &callbacks)); 1099 1100 Dex2Oat* p_dex2oat; 1101 if (!Dex2Oat::Create(&p_dex2oat, 1102 runtime_options, 1103 compiler_options, 1104 compiler_backend, 1105 instruction_set, 1106 instruction_set_features, 1107 &verification_results, 1108 &method_inliner_map, 1109 thread_count)) { 1110 LOG(ERROR) << "Failed to create dex2oat"; 1111 return EXIT_FAILURE; 1112 } 1113 UniquePtr<Dex2Oat> dex2oat(p_dex2oat); 1114 // Runtime::Create acquired the mutator_lock_ that is normally given away when we Runtime::Start, 1115 // give it away now so that we don't starve GC. 1116 Thread* self = Thread::Current(); 1117 self->TransitionFromRunnableToSuspended(kNative); 1118 // If we're doing the image, override the compiler filter to force full compilation. Must be 1119 // done ahead of WellKnownClasses::Init that causes verification. Note: doesn't force 1120 // compilation of class initializers. 1121 // Whilst we're in native take the opportunity to initialize well known classes. 1122 WellKnownClasses::Init(self->GetJniEnv()); 1123 1124 // If --image-classes was specified, calculate the full list of classes to include in the image 1125 UniquePtr<CompilerDriver::DescriptorSet> image_classes(NULL); 1126 if (image_classes_filename != NULL) { 1127 std::string error_msg; 1128 if (image_classes_zip_filename != NULL) { 1129 image_classes.reset(dex2oat->ReadImageClassesFromZip(image_classes_zip_filename, 1130 image_classes_filename, 1131 &error_msg)); 1132 } else { 1133 image_classes.reset(dex2oat->ReadImageClassesFromFile(image_classes_filename)); 1134 } 1135 if (image_classes.get() == NULL) { 1136 LOG(ERROR) << "Failed to create list of image classes from '" << image_classes_filename << 1137 "': " << error_msg; 1138 return EXIT_FAILURE; 1139 } 1140 } 1141 1142 std::vector<const DexFile*> dex_files; 1143 if (boot_image_option.empty()) { 1144 dex_files = Runtime::Current()->GetClassLinker()->GetBootClassPath(); 1145 } else { 1146 if (dex_filenames.empty()) { 1147 ATRACE_BEGIN("Opening zip archive from file descriptor"); 1148 std::string error_msg; 1149 UniquePtr<ZipArchive> zip_archive(ZipArchive::OpenFromFd(zip_fd, zip_location.c_str(), 1150 &error_msg)); 1151 if (zip_archive.get() == NULL) { 1152 LOG(ERROR) << "Failed to open zip from file descriptor for '" << zip_location << "': " 1153 << error_msg; 1154 return EXIT_FAILURE; 1155 } 1156 const DexFile* dex_file = DexFile::Open(*zip_archive.get(), zip_location, &error_msg); 1157 if (dex_file == NULL) { 1158 LOG(ERROR) << "Failed to open dex from file descriptor for zip file '" << zip_location 1159 << "': " << error_msg; 1160 return EXIT_FAILURE; 1161 } 1162 dex_files.push_back(dex_file); 1163 ATRACE_END(); 1164 } else { 1165 size_t failure_count = OpenDexFiles(dex_filenames, dex_locations, dex_files); 1166 if (failure_count > 0) { 1167 LOG(ERROR) << "Failed to open some dex files: " << failure_count; 1168 return EXIT_FAILURE; 1169 } 1170 } 1171 1172 const bool kSaveDexInput = false; 1173 if (kSaveDexInput) { 1174 for (size_t i = 0; i < dex_files.size(); ++i) { 1175 const DexFile* dex_file = dex_files[i]; 1176 std::string tmp_file_name(StringPrintf("/data/local/tmp/dex2oat.%d.%zd.dex", getpid(), i)); 1177 UniquePtr<File> tmp_file(OS::CreateEmptyFile(tmp_file_name.c_str())); 1178 if (tmp_file.get() == nullptr) { 1179 PLOG(ERROR) << "Failed to open file " << tmp_file_name 1180 << ". Try: adb shell chmod 777 /data/local/tmp"; 1181 continue; 1182 } 1183 tmp_file->WriteFully(dex_file->Begin(), dex_file->Size()); 1184 LOG(INFO) << "Wrote input to " << tmp_file_name; 1185 } 1186 } 1187 } 1188 // Ensure opened dex files are writable for dex-to-dex transformations. 1189 for (const auto& dex_file : dex_files) { 1190 if (!dex_file->EnableWrite()) { 1191 PLOG(ERROR) << "Failed to make .dex file writeable '" << dex_file->GetLocation() << "'\n"; 1192 } 1193 } 1194 1195 /* 1196 * If we're not in interpret-only mode, go ahead and compile small applications. Don't 1197 * bother to check if we're doing the image. 1198 */ 1199 if (!image && (compiler_options.GetCompilerFilter() != CompilerOptions::kInterpretOnly)) { 1200 size_t num_methods = 0; 1201 for (size_t i = 0; i != dex_files.size(); ++i) { 1202 const DexFile* dex_file = dex_files[i]; 1203 CHECK(dex_file != NULL); 1204 num_methods += dex_file->NumMethodIds(); 1205 } 1206 if (num_methods <= compiler_options.GetNumDexMethodsThreshold()) { 1207 compiler_options.SetCompilerFilter(CompilerOptions::kSpeed); 1208 VLOG(compiler) << "Below method threshold, compiling anyways"; 1209 } 1210 } 1211 1212 UniquePtr<const CompilerDriver> compiler(dex2oat->CreateOatFile(boot_image_option, 1213 android_root, 1214 is_host, 1215 dex_files, 1216 oat_file.get(), 1217 bitcode_filename, 1218 image, 1219 image_classes, 1220 dump_stats, 1221 dump_passes, 1222 timings, 1223 compiler_phases_timings, 1224 profile_file)); 1225 1226 if (compiler.get() == NULL) { 1227 LOG(ERROR) << "Failed to create oat file: " << oat_location; 1228 return EXIT_FAILURE; 1229 } 1230 1231 VLOG(compiler) << "Oat file written successfully (unstripped): " << oat_location; 1232 1233 // Notes on the interleaving of creating the image and oat file to 1234 // ensure the references between the two are correct. 1235 // 1236 // Currently we have a memory layout that looks something like this: 1237 // 1238 // +--------------+ 1239 // | image | 1240 // +--------------+ 1241 // | boot oat | 1242 // +--------------+ 1243 // | alloc spaces | 1244 // +--------------+ 1245 // 1246 // There are several constraints on the loading of the image and boot.oat. 1247 // 1248 // 1. The image is expected to be loaded at an absolute address and 1249 // contains Objects with absolute pointers within the image. 1250 // 1251 // 2. There are absolute pointers from Methods in the image to their 1252 // code in the oat. 1253 // 1254 // 3. There are absolute pointers from the code in the oat to Methods 1255 // in the image. 1256 // 1257 // 4. There are absolute pointers from code in the oat to other code 1258 // in the oat. 1259 // 1260 // To get this all correct, we go through several steps. 1261 // 1262 // 1. We have already created that oat file above with 1263 // CreateOatFile. Originally this was just our own proprietary file 1264 // but now it is contained within an ELF dynamic object (aka an .so 1265 // file). The Compiler returned by CreateOatFile provides 1266 // PatchInformation for references to oat code and Methods that need 1267 // to be update once we know where the oat file will be located 1268 // after the image. 1269 // 1270 // 2. We create the image file. It needs to know where the oat file 1271 // will be loaded after itself. Originally when oat file was simply 1272 // memory mapped so we could predict where its contents were based 1273 // on the file size. Now that it is an ELF file, we need to inspect 1274 // the ELF file to understand the in memory segment layout including 1275 // where the oat header is located within. ImageWriter's 1276 // PatchOatCodeAndMethods uses the PatchInformation from the 1277 // Compiler to touch up absolute references in the oat file. 1278 // 1279 // 3. We fixup the ELF program headers so that dlopen will try to 1280 // load the .so at the desired location at runtime by offsetting the 1281 // Elf32_Phdr.p_vaddr values by the desired base address. 1282 // 1283 if (image) { 1284 timings.NewSplit("dex2oat ImageWriter"); 1285 bool image_creation_success = dex2oat->CreateImageFile(image_filename, 1286 image_base, 1287 oat_unstripped, 1288 oat_location, 1289 *compiler.get()); 1290 if (!image_creation_success) { 1291 return EXIT_FAILURE; 1292 } 1293 VLOG(compiler) << "Image written successfully: " << image_filename; 1294 } 1295 1296 if (is_host) { 1297 if (dump_timing || (dump_slow_timing && timings.GetTotalNs() > MsToNs(1000))) { 1298 LOG(INFO) << Dumpable<TimingLogger>(timings); 1299 } 1300 if (dump_passes) { 1301 LOG(INFO) << Dumpable<CumulativeLogger>(*compiler.get()->GetTimingsLogger()); 1302 } 1303 return EXIT_SUCCESS; 1304 } 1305 1306 // If we don't want to strip in place, copy from unstripped location to stripped location. 1307 // We need to strip after image creation because FixupElf needs to use .strtab. 1308 if (oat_unstripped != oat_stripped) { 1309 timings.NewSplit("dex2oat OatFile copy"); 1310 oat_file.reset(); 1311 UniquePtr<File> in(OS::OpenFileForReading(oat_unstripped.c_str())); 1312 UniquePtr<File> out(OS::CreateEmptyFile(oat_stripped.c_str())); 1313 size_t buffer_size = 8192; 1314 UniquePtr<uint8_t> buffer(new uint8_t[buffer_size]); 1315 while (true) { 1316 int bytes_read = TEMP_FAILURE_RETRY(read(in->Fd(), buffer.get(), buffer_size)); 1317 if (bytes_read <= 0) { 1318 break; 1319 } 1320 bool write_ok = out->WriteFully(buffer.get(), bytes_read); 1321 CHECK(write_ok); 1322 } 1323 oat_file.reset(out.release()); 1324 VLOG(compiler) << "Oat file copied successfully (stripped): " << oat_stripped; 1325 } 1326 1327#if ART_USE_PORTABLE_COMPILER // We currently only generate symbols on Portable 1328 timings.NewSplit("dex2oat ElfStripper"); 1329 // Strip unneeded sections for target 1330 off_t seek_actual = lseek(oat_file->Fd(), 0, SEEK_SET); 1331 CHECK_EQ(0, seek_actual); 1332 std::string error_msg; 1333 CHECK(ElfStripper::Strip(oat_file.get(), &error_msg)) << error_msg; 1334 1335 1336 // We wrote the oat file successfully, and want to keep it. 1337 VLOG(compiler) << "Oat file written successfully (stripped): " << oat_location; 1338#endif // ART_USE_PORTABLE_COMPILER 1339 1340 timings.EndSplit(); 1341 1342 if (dump_timing || (dump_slow_timing && timings.GetTotalNs() > MsToNs(1000))) { 1343 LOG(INFO) << Dumpable<TimingLogger>(timings); 1344 } 1345 if (dump_passes) { 1346 LOG(INFO) << Dumpable<CumulativeLogger>(compiler_phases_timings); 1347 } 1348 1349 // Everything was successfully written, do an explicit exit here to avoid running Runtime 1350 // destructors that take time (bug 10645725) unless we're a debug build or running on valgrind. 1351 if (!kIsDebugBuild && (RUNNING_ON_VALGRIND == 0)) { 1352 dex2oat->LogCompletionTime(); 1353 exit(EXIT_SUCCESS); 1354 } 1355 1356 return EXIT_SUCCESS; 1357} // NOLINT(readability/fn_size) 1358} // namespace art 1359 1360int main(int argc, char** argv) { 1361 return art::dex2oat(argc, argv); 1362} 1363