dex2oat.cc revision ae7083dac2db59dcdef869e35ac44a039d888ee9
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 "sirt_ref.h" 58#include "vector_output_stream.h" 59#include "well_known_classes.h" 60#include "zip_archive.h" 61 62namespace art { 63 64static int original_argc; 65static char** original_argv; 66 67static std::string CommandLine() { 68 std::vector<std::string> command; 69 for (int i = 0; i < original_argc; ++i) { 70 command.push_back(original_argv[i]); 71 } 72 return Join(command, ' '); 73} 74 75static void UsageErrorV(const char* fmt, va_list ap) { 76 std::string error; 77 StringAppendV(&error, fmt, ap); 78 LOG(ERROR) << error; 79} 80 81static void UsageError(const char* fmt, ...) { 82 va_list ap; 83 va_start(ap, fmt); 84 UsageErrorV(fmt, ap); 85 va_end(ap); 86} 87 88static void Usage(const char* fmt, ...) { 89 va_list ap; 90 va_start(ap, fmt); 91 UsageErrorV(fmt, ap); 92 va_end(ap); 93 94 UsageError("Command: %s", CommandLine().c_str()); 95 96 UsageError("Usage: dex2oat [options]..."); 97 UsageError(""); 98 UsageError(" --dex-file=<dex-file>: specifies a .dex file to compile."); 99 UsageError(" Example: --dex-file=/system/framework/core.jar"); 100 UsageError(""); 101 UsageError(" --zip-fd=<file-descriptor>: specifies a file descriptor of a zip file"); 102 UsageError(" containing a classes.dex file to compile."); 103 UsageError(" Example: --zip-fd=5"); 104 UsageError(""); 105 UsageError(" --zip-location=<zip-location>: specifies a symbolic name for the file"); 106 UsageError(" corresponding to the file descriptor specified by --zip-fd."); 107 UsageError(" Example: --zip-location=/system/app/Calculator.apk"); 108 UsageError(""); 109 UsageError(" --oat-file=<file.oat>: specifies the oat output destination via a filename."); 110 UsageError(" Example: --oat-file=/system/framework/boot.oat"); 111 UsageError(""); 112 UsageError(" --oat-fd=<number>: specifies the oat output destination via a file descriptor."); 113 UsageError(" Example: --oat-file=/system/framework/boot.oat"); 114 UsageError(""); 115 UsageError(" --oat-location=<oat-name>: specifies a symbolic name for the file corresponding"); 116 UsageError(" to the file descriptor specified by --oat-fd."); 117 UsageError(" Example: --oat-location=/data/dalvik-cache/system@app@Calculator.apk.oat"); 118 UsageError(""); 119 UsageError(" --oat-symbols=<file.oat>: specifies the oat output destination with full symbols."); 120 UsageError(" Example: --oat-symbols=/symbols/system/framework/boot.oat"); 121 UsageError(""); 122 UsageError(" --bitcode=<file.bc>: specifies the optional bitcode filename."); 123 UsageError(" Example: --bitcode=/system/framework/boot.bc"); 124 UsageError(""); 125 UsageError(" --image=<file.art>: specifies the output image filename."); 126 UsageError(" Example: --image=/system/framework/boot.art"); 127 UsageError(""); 128 UsageError(" --image-classes=<classname-file>: specifies classes to include in an image."); 129 UsageError(" Example: --image=frameworks/base/preloaded-classes"); 130 UsageError(""); 131 UsageError(" --base=<hex-address>: specifies the base address when creating a boot image."); 132 UsageError(" Example: --base=0x50000000"); 133 UsageError(""); 134 UsageError(" --boot-image=<file.art>: provide the image file for the boot class path."); 135 UsageError(" Example: --boot-image=/system/framework/boot.art"); 136 UsageError(" Default: <host-prefix>/system/framework/boot.art"); 137 UsageError(""); 138 UsageError(" --host-prefix=<path>: used to translate host paths to target paths during"); 139 UsageError(" cross compilation."); 140 UsageError(" Example: --host-prefix=out/target/product/crespo"); 141 UsageError(" Default: $ANDROID_PRODUCT_OUT"); 142 UsageError(""); 143 UsageError(" --android-root=<path>: used to locate libraries for portable linking."); 144 UsageError(" Example: --android-root=out/host/linux-x86"); 145 UsageError(" Default: $ANDROID_ROOT"); 146 UsageError(""); 147 UsageError(" --instruction-set=(arm|mips|x86): compile for a particular instruction"); 148 UsageError(" set."); 149 UsageError(" Example: --instruction-set=x86"); 150 UsageError(" Default: arm"); 151 UsageError(""); 152 UsageError(" --instruction-set-features=...,: Specify instruction set features"); 153 UsageError(" Example: --instruction-set-features=div"); 154 UsageError(" Default: default"); 155 UsageError(""); 156 UsageError(" --compiler-backend=(Quick|QuickGBC|Portable): select compiler backend"); 157 UsageError(" set."); 158 UsageError(" Example: --compiler-backend=Portable"); 159 UsageError(" Default: Quick"); 160 UsageError(""); 161 UsageError(" --compiler-filter=(interpret-only|space|balanced|speed|everything): select"); 162 UsageError(" compiler filter."); 163 UsageError(" Example: --compiler-filter=everything"); 164#if ART_SMALL_MODE 165 UsageError(" Default: interpret-only"); 166#else 167 UsageError(" Default: speed"); 168#endif 169 UsageError(""); 170 UsageError(" --huge-method-max=<method-instruction-count>: the threshold size for a huge"); 171 UsageError(" method for compiler filter tuning."); 172 UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold); 173 UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold); 174 UsageError(""); 175 UsageError(" --huge-method-max=<method-instruction-count>: threshold size for a huge"); 176 UsageError(" method for compiler filter tuning."); 177 UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold); 178 UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold); 179 UsageError(""); 180 UsageError(" --large-method-max=<method-instruction-count>: threshold size for a large"); 181 UsageError(" method for compiler filter tuning."); 182 UsageError(" Example: --large-method-max=%d", CompilerOptions::kDefaultLargeMethodThreshold); 183 UsageError(" Default: %d", CompilerOptions::kDefaultLargeMethodThreshold); 184 UsageError(""); 185 UsageError(" --small-method-max=<method-instruction-count>: threshold size for a small"); 186 UsageError(" method for compiler filter tuning."); 187 UsageError(" Example: --small-method-max=%d", CompilerOptions::kDefaultSmallMethodThreshold); 188 UsageError(" Default: %d", CompilerOptions::kDefaultSmallMethodThreshold); 189 UsageError(""); 190 UsageError(" --tiny-method-max=<method-instruction-count>: threshold size for a tiny"); 191 UsageError(" method for compiler filter tuning."); 192 UsageError(" Example: --tiny-method-max=%d", CompilerOptions::kDefaultTinyMethodThreshold); 193 UsageError(" Default: %d", CompilerOptions::kDefaultTinyMethodThreshold); 194 UsageError(""); 195 UsageError(" --num-dex-methods=<method-count>: threshold size for a small dex file for"); 196 UsageError(" compiler filter tuning. If the input has fewer than this many methods"); 197 UsageError(" and the filter is not interpret-only, overrides the filter to use speed"); 198 UsageError(" Example: --num-dex-method=%d", CompilerOptions::kDefaultNumDexMethodsThreshold); 199 UsageError(" Default: %d", CompilerOptions::kDefaultNumDexMethodsThreshold); 200 UsageError(""); 201 UsageError(" --host: used with Portable backend to link against host runtime libraries"); 202 UsageError(""); 203 UsageError(" --dump-timing: display a breakdown of where time was spent"); 204 UsageError(""); 205 UsageError(" --runtime-arg <argument>: used to specify various arguments for the runtime,"); 206 UsageError(" such as initial heap size, maximum heap size, and verbose output."); 207 UsageError(" Use a separate --runtime-arg switch for each argument."); 208 UsageError(" Example: --runtime-arg -Xms256m"); 209 UsageError(""); 210 std::cerr << "See log for usage error information\n"; 211 exit(EXIT_FAILURE); 212} 213 214class Dex2Oat { 215 public: 216 static bool Create(Dex2Oat** p_dex2oat, 217 const Runtime::Options& runtime_options, 218 const CompilerOptions& compiler_options, 219 CompilerBackend::Kind compiler_backend, 220 InstructionSet instruction_set, 221 InstructionSetFeatures instruction_set_features, 222 VerificationResults* verification_results, 223 DexFileToMethodInlinerMap* method_inliner_map, 224 size_t thread_count) 225 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_) { 226 CHECK(verification_results != nullptr); 227 CHECK(method_inliner_map != nullptr); 228 UniquePtr<Dex2Oat> dex2oat(new Dex2Oat(&compiler_options, 229 compiler_backend, 230 instruction_set, 231 instruction_set_features, 232 verification_results, 233 method_inliner_map, 234 thread_count)); 235 if (!dex2oat->CreateRuntime(runtime_options, instruction_set)) { 236 *p_dex2oat = NULL; 237 return false; 238 } 239 *p_dex2oat = dex2oat.release(); 240 return true; 241 } 242 243 ~Dex2Oat() { 244 delete runtime_; 245 LogCompletionTime(); 246 } 247 248 void LogCompletionTime() { 249 LOG(INFO) << "dex2oat took " << PrettyDuration(NanoTime() - start_ns_) 250 << " (threads: " << thread_count_ << ")"; 251 } 252 253 254 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 255 CompilerDriver::DescriptorSet* ReadImageClassesFromFile(const char* image_classes_filename) { 256 UniquePtr<std::ifstream> image_classes_file(new std::ifstream(image_classes_filename, 257 std::ifstream::in)); 258 if (image_classes_file.get() == NULL) { 259 LOG(ERROR) << "Failed to open image classes file " << image_classes_filename; 260 return NULL; 261 } 262 UniquePtr<CompilerDriver::DescriptorSet> result(ReadImageClasses(*image_classes_file.get())); 263 image_classes_file->close(); 264 return result.release(); 265 } 266 267 CompilerDriver::DescriptorSet* ReadImageClasses(std::istream& image_classes_stream) { 268 UniquePtr<CompilerDriver::DescriptorSet> image_classes(new CompilerDriver::DescriptorSet); 269 while (image_classes_stream.good()) { 270 std::string dot; 271 std::getline(image_classes_stream, dot); 272 if (StartsWith(dot, "#") || dot.empty()) { 273 continue; 274 } 275 std::string descriptor(DotToDescriptor(dot.c_str())); 276 image_classes->insert(descriptor); 277 } 278 return image_classes.release(); 279 } 280 281 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 282 CompilerDriver::DescriptorSet* ReadImageClassesFromZip(const char* zip_filename, 283 const char* image_classes_filename, 284 std::string* error_msg) { 285 UniquePtr<ZipArchive> zip_archive(ZipArchive::Open(zip_filename, error_msg)); 286 if (zip_archive.get() == NULL) { 287 return NULL; 288 } 289 UniquePtr<ZipEntry> zip_entry(zip_archive->Find(image_classes_filename, error_msg)); 290 if (zip_entry.get() == NULL) { 291 *error_msg = StringPrintf("Failed to find '%s' within '%s': %s", image_classes_filename, 292 zip_filename, error_msg->c_str()); 293 return NULL; 294 } 295 UniquePtr<MemMap> image_classes_file(zip_entry->ExtractToMemMap(image_classes_filename, 296 error_msg)); 297 if (image_classes_file.get() == NULL) { 298 *error_msg = StringPrintf("Failed to extract '%s' from '%s': %s", image_classes_filename, 299 zip_filename, error_msg->c_str()); 300 return NULL; 301 } 302 const std::string image_classes_string(reinterpret_cast<char*>(image_classes_file->Begin()), 303 image_classes_file->Size()); 304 std::istringstream image_classes_stream(image_classes_string); 305 return ReadImageClasses(image_classes_stream); 306 } 307 308 const CompilerDriver* CreateOatFile(const std::string& boot_image_option, 309 const std::string* host_prefix, 310 const std::string& android_root, 311 bool is_host, 312 const std::vector<const DexFile*>& dex_files, 313 File* oat_file, 314 const std::string& bitcode_filename, 315 bool image, 316 UniquePtr<CompilerDriver::DescriptorSet>& image_classes, 317 bool dump_stats, 318 bool dump_passes, 319 TimingLogger& timings, 320 CumulativeLogger& compiler_phases_timings) { 321 // SirtRef and ClassLoader creation needs to come after Runtime::Create 322 jobject class_loader = NULL; 323 Thread* self = Thread::Current(); 324 if (!boot_image_option.empty()) { 325 ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 326 std::vector<const DexFile*> class_path_files(dex_files); 327 OpenClassPathFiles(runtime_->GetClassPathString(), class_path_files); 328 ScopedObjectAccess soa(self); 329 for (size_t i = 0; i < class_path_files.size(); i++) { 330 class_linker->RegisterDexFile(*class_path_files[i]); 331 } 332 soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader); 333 ScopedLocalRef<jobject> class_loader_local(soa.Env(), 334 soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader)); 335 class_loader = soa.Env()->NewGlobalRef(class_loader_local.get()); 336 Runtime::Current()->SetCompileTimeClassPath(class_loader, class_path_files); 337 } 338 339 UniquePtr<CompilerDriver> driver(new CompilerDriver(compiler_options_, 340 verification_results_, 341 method_inliner_map_, 342 compiler_backend_, 343 instruction_set_, 344 instruction_set_features_, 345 image, 346 image_classes.release(), 347 thread_count_, 348 dump_stats, 349 dump_passes, 350 &compiler_phases_timings)); 351 352 driver->GetCompilerBackend()->SetBitcodeFileName(bitcode_filename); 353 354 driver->CompileAll(class_loader, dex_files, timings); 355 356 timings.NewSplit("dex2oat OatWriter"); 357 std::string image_file_location; 358 uint32_t image_file_location_oat_checksum = 0; 359 uintptr_t image_file_location_oat_data_begin = 0; 360 if (!driver->IsImage()) { 361 TimingLogger::ScopedSplit split("Loading image checksum", &timings); 362 gc::space::ImageSpace* image_space = Runtime::Current()->GetHeap()->GetImageSpace(); 363 image_file_location_oat_checksum = image_space->GetImageHeader().GetOatChecksum(); 364 image_file_location_oat_data_begin = 365 reinterpret_cast<uintptr_t>(image_space->GetImageHeader().GetOatDataBegin()); 366 image_file_location = image_space->GetImageFilename(); 367 if (host_prefix != NULL && StartsWith(image_file_location, host_prefix->c_str())) { 368 image_file_location = image_file_location.substr(host_prefix->size()); 369 } 370 } 371 372 OatWriter oat_writer(dex_files, 373 image_file_location_oat_checksum, 374 image_file_location_oat_data_begin, 375 image_file_location, 376 driver.get(), 377 &timings); 378 379 TimingLogger::ScopedSplit split("Writing ELF", &timings); 380 if (!driver->WriteElf(android_root, is_host, dex_files, oat_writer, oat_file)) { 381 LOG(ERROR) << "Failed to write ELF file " << oat_file->GetPath(); 382 return NULL; 383 } 384 385 return driver.release(); 386 } 387 388 bool CreateImageFile(const std::string& image_filename, 389 uintptr_t image_base, 390 const std::string& oat_filename, 391 const std::string& oat_location, 392 const CompilerDriver& compiler) 393 LOCKS_EXCLUDED(Locks::mutator_lock_) { 394 uintptr_t oat_data_begin; 395 { 396 // ImageWriter is scoped so it can free memory before doing FixupElf 397 ImageWriter image_writer(compiler); 398 if (!image_writer.Write(image_filename, image_base, oat_filename, oat_location)) { 399 LOG(ERROR) << "Failed to create image file " << image_filename; 400 return false; 401 } 402 oat_data_begin = image_writer.GetOatDataBegin(); 403 } 404 405 UniquePtr<File> oat_file(OS::OpenFileReadWrite(oat_filename.c_str())); 406 if (oat_file.get() == NULL) { 407 PLOG(ERROR) << "Failed to open ELF file: " << oat_filename; 408 return false; 409 } 410 if (!ElfFixup::Fixup(oat_file.get(), oat_data_begin)) { 411 LOG(ERROR) << "Failed to fixup ELF file " << oat_file->GetPath(); 412 return false; 413 } 414 return true; 415 } 416 417 private: 418 explicit Dex2Oat(const CompilerOptions* compiler_options, 419 CompilerBackend::Kind compiler_backend, 420 InstructionSet instruction_set, 421 InstructionSetFeatures instruction_set_features, 422 VerificationResults* verification_results, 423 DexFileToMethodInlinerMap* method_inliner_map, 424 size_t thread_count) 425 : compiler_options_(compiler_options), 426 compiler_backend_(compiler_backend), 427 instruction_set_(instruction_set), 428 instruction_set_features_(instruction_set_features), 429 verification_results_(verification_results), 430 method_inliner_map_(method_inliner_map), 431 runtime_(nullptr), 432 thread_count_(thread_count), 433 start_ns_(NanoTime()) { 434 CHECK(compiler_options != nullptr); 435 CHECK(verification_results != nullptr); 436 CHECK(method_inliner_map != nullptr); 437 } 438 439 bool CreateRuntime(const Runtime::Options& runtime_options, InstructionSet instruction_set) 440 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_) { 441 if (!Runtime::Create(runtime_options, false)) { 442 LOG(ERROR) << "Failed to create runtime"; 443 return false; 444 } 445 Runtime* runtime = Runtime::Current(); 446 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 447 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 448 if (!runtime->HasCalleeSaveMethod(type)) { 449 runtime->SetCalleeSaveMethod(runtime->CreateCalleeSaveMethod(instruction_set, type), type); 450 } 451 } 452 runtime->GetClassLinker()->FixupDexCaches(runtime->GetResolutionMethod()); 453 runtime_ = runtime; 454 return true; 455 } 456 457 // Appends to dex_files any elements of class_path that it doesn't already 458 // contain. This will open those dex files as necessary. 459 static void OpenClassPathFiles(const std::string& class_path, 460 std::vector<const DexFile*>& dex_files) { 461 std::vector<std::string> parsed; 462 Split(class_path, ':', parsed); 463 // Take Locks::mutator_lock_ so that lock ordering on the ClassLinker::dex_lock_ is maintained. 464 ScopedObjectAccess soa(Thread::Current()); 465 for (size_t i = 0; i < parsed.size(); ++i) { 466 if (DexFilesContains(dex_files, parsed[i])) { 467 continue; 468 } 469 std::string error_msg; 470 const DexFile* dex_file = DexFile::Open(parsed[i].c_str(), parsed[i].c_str(), &error_msg); 471 if (dex_file == NULL) { 472 LOG(WARNING) << "Failed to open dex file '" << parsed[i] << "': " << error_msg; 473 } else { 474 dex_files.push_back(dex_file); 475 } 476 } 477 } 478 479 // Returns true if dex_files has a dex with the named location. 480 static bool DexFilesContains(const std::vector<const DexFile*>& dex_files, 481 const std::string& location) { 482 for (size_t i = 0; i < dex_files.size(); ++i) { 483 if (dex_files[i]->GetLocation() == location) { 484 return true; 485 } 486 } 487 return false; 488 } 489 490 const CompilerOptions* const compiler_options_; 491 const CompilerBackend::Kind compiler_backend_; 492 493 const InstructionSet instruction_set_; 494 const InstructionSetFeatures instruction_set_features_; 495 496 VerificationResults* const verification_results_; 497 DexFileToMethodInlinerMap* const method_inliner_map_; 498 Runtime* runtime_; 499 size_t thread_count_; 500 uint64_t start_ns_; 501 502 DISALLOW_IMPLICIT_CONSTRUCTORS(Dex2Oat); 503}; 504 505static bool ParseInt(const char* in, int* out) { 506 char* end; 507 int result = strtol(in, &end, 10); 508 if (in == end || *end != '\0') { 509 return false; 510 } 511 *out = result; 512 return true; 513} 514 515static size_t OpenDexFiles(const std::vector<const char*>& dex_filenames, 516 const std::vector<const char*>& dex_locations, 517 std::vector<const DexFile*>& dex_files) { 518 size_t failure_count = 0; 519 for (size_t i = 0; i < dex_filenames.size(); i++) { 520 const char* dex_filename = dex_filenames[i]; 521 const char* dex_location = dex_locations[i]; 522 ATRACE_BEGIN(StringPrintf("Opening dex file '%s'", dex_filenames[i]).c_str()); 523 std::string error_msg; 524 if (!OS::FileExists(dex_filename)) { 525 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 526 continue; 527 } 528 const DexFile* dex_file = DexFile::Open(dex_filename, dex_location, &error_msg); 529 if (dex_file == NULL) { 530 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 531 ++failure_count; 532 } else { 533 dex_files.push_back(dex_file); 534 } 535 ATRACE_END(); 536 } 537 return failure_count; 538} 539 540// The primary goal of the watchdog is to prevent stuck build servers 541// during development when fatal aborts lead to a cascade of failures 542// that result in a deadlock. 543class WatchDog { 544// WatchDog defines its own CHECK_PTHREAD_CALL to avoid using Log which uses locks 545#undef CHECK_PTHREAD_CALL 546#define CHECK_WATCH_DOG_PTHREAD_CALL(call, args, what) \ 547 do { \ 548 int rc = call args; \ 549 if (rc != 0) { \ 550 errno = rc; \ 551 std::string message(# call); \ 552 message += " failed for "; \ 553 message += reason; \ 554 Fatal(message); \ 555 } \ 556 } while (false) 557 558 public: 559 explicit WatchDog(bool is_watch_dog_enabled) { 560 is_watch_dog_enabled_ = is_watch_dog_enabled; 561 if (!is_watch_dog_enabled_) { 562 return; 563 } 564 shutting_down_ = false; 565 const char* reason = "dex2oat watch dog thread startup"; 566 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_init, (&mutex_, NULL), reason); 567 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_init, (&cond_, NULL), reason); 568 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_init, (&attr_), reason); 569 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_create, (&pthread_, &attr_, &CallBack, this), reason); 570 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_destroy, (&attr_), reason); 571 } 572 ~WatchDog() { 573 if (!is_watch_dog_enabled_) { 574 return; 575 } 576 const char* reason = "dex2oat watch dog thread shutdown"; 577 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 578 shutting_down_ = true; 579 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_signal, (&cond_), reason); 580 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 581 582 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_join, (pthread_, NULL), reason); 583 584 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_destroy, (&cond_), reason); 585 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_destroy, (&mutex_), reason); 586 } 587 588 private: 589 static void* CallBack(void* arg) { 590 WatchDog* self = reinterpret_cast<WatchDog*>(arg); 591 ::art::SetThreadName("dex2oat watch dog"); 592 self->Wait(); 593 return NULL; 594 } 595 596 static void Message(char severity, const std::string& message) { 597 // TODO: Remove when we switch to LOG when we can guarantee it won't prevent shutdown in error 598 // cases. 599 fprintf(stderr, "dex2oat%s %c %d %d %s\n", 600 kIsDebugBuild ? "d" : "", 601 severity, 602 getpid(), 603 GetTid(), 604 message.c_str()); 605 } 606 607 static void Warn(const std::string& message) { 608 Message('W', message); 609 } 610 611 static void Fatal(const std::string& message) { 612 Message('F', message); 613 exit(1); 614 } 615 616 void Wait() { 617 bool warning = true; 618 CHECK_GT(kWatchDogTimeoutSeconds, kWatchDogWarningSeconds); 619 // TODO: tune the multiplier for GC verification, the following is just to make the timeout 620 // large. 621 int64_t multiplier = kVerifyObjectSupport > kVerifyObjectModeFast ? 100 : 1; 622 timespec warning_ts; 623 InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogWarningSeconds * 1000, 0, &warning_ts); 624 timespec timeout_ts; 625 InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogTimeoutSeconds * 1000, 0, &timeout_ts); 626 const char* reason = "dex2oat watch dog thread waiting"; 627 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 628 while (!shutting_down_) { 629 int rc = TEMP_FAILURE_RETRY(pthread_cond_timedwait(&cond_, &mutex_, 630 warning ? &warning_ts 631 : &timeout_ts)); 632 if (rc == ETIMEDOUT) { 633 std::string message(StringPrintf("dex2oat did not finish after %d seconds", 634 warning ? kWatchDogWarningSeconds 635 : kWatchDogTimeoutSeconds)); 636 if (warning) { 637 Warn(message.c_str()); 638 warning = false; 639 } else { 640 Fatal(message.c_str()); 641 } 642 } else if (rc != 0) { 643 std::string message(StringPrintf("pthread_cond_timedwait failed: %s", 644 strerror(errno))); 645 Fatal(message.c_str()); 646 } 647 } 648 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 649 } 650 651 // When setting timeouts, keep in mind that the build server may not be as fast as your desktop. 652#if ART_USE_PORTABLE_COMPILER 653 static const unsigned int kWatchDogWarningSeconds = 2 * 60; // 2 minutes. 654 static const unsigned int kWatchDogTimeoutSeconds = 30 * 60; // 25 minutes + buffer. 655#else 656 static const unsigned int kWatchDogWarningSeconds = 1 * 60; // 1 minute. 657 static const unsigned int kWatchDogTimeoutSeconds = 6 * 60; // 5 minutes + buffer. 658#endif 659 660 bool is_watch_dog_enabled_; 661 bool shutting_down_; 662 // TODO: Switch to Mutex when we can guarantee it won't prevent shutdown in error cases. 663 pthread_mutex_t mutex_; 664 pthread_cond_t cond_; 665 pthread_attr_t attr_; 666 pthread_t pthread_; 667}; 668const unsigned int WatchDog::kWatchDogWarningSeconds; 669const unsigned int WatchDog::kWatchDogTimeoutSeconds; 670 671// Given a set of instruction features from the build, parse it. The 672// input 'str' is a comma separated list of feature names. Parse it and 673// return the InstructionSetFeatures object. 674static InstructionSetFeatures ParseFeatureList(std::string str) { 675 InstructionSetFeatures result; 676 typedef std::vector<std::string> FeatureList; 677 FeatureList features; 678 Split(str, ',', features); 679 for (FeatureList::iterator i = features.begin(); i != features.end(); i++) { 680 std::string feature = Trim(*i); 681 if (feature == "default") { 682 // Nothing to do. 683 } else if (feature == "div") { 684 // Supports divide instruction. 685 result.SetHasDivideInstruction(true); 686 } else if (feature == "nodiv") { 687 // Turn off support for divide instruction. 688 result.SetHasDivideInstruction(false); 689 } else { 690 Usage("Unknown instruction set feature: '%s'", feature.c_str()); 691 } 692 } 693 // others... 694 return result; 695} 696 697static int dex2oat(int argc, char** argv) { 698 original_argc = argc; 699 original_argv = argv; 700 701 TimingLogger timings("compiler", false, false); 702 CumulativeLogger compiler_phases_timings("compilation times"); 703 704 InitLogging(argv); 705 706 // Skip over argv[0]. 707 argv++; 708 argc--; 709 710 if (argc == 0) { 711 Usage("No arguments specified"); 712 } 713 714 std::vector<const char*> dex_filenames; 715 std::vector<const char*> dex_locations; 716 int zip_fd = -1; 717 std::string zip_location; 718 std::string oat_filename; 719 std::string oat_symbols; 720 std::string oat_location; 721 int oat_fd = -1; 722 std::string bitcode_filename; 723 const char* image_classes_zip_filename = NULL; 724 const char* image_classes_filename = NULL; 725 std::string image_filename; 726 std::string boot_image_filename; 727 uintptr_t image_base = 0; 728 UniquePtr<std::string> host_prefix; 729 std::string android_root; 730 std::vector<const char*> runtime_args; 731 int thread_count = sysconf(_SC_NPROCESSORS_CONF); 732 CompilerBackend::Kind compiler_backend = kUsePortableCompiler 733 ? CompilerBackend::kPortable 734 : CompilerBackend::kQuick; 735 const char* compiler_filter_string = NULL; 736 int huge_method_threshold = CompilerOptions::kDefaultHugeMethodThreshold; 737 int large_method_threshold = CompilerOptions::kDefaultLargeMethodThreshold; 738 int small_method_threshold = CompilerOptions::kDefaultSmallMethodThreshold; 739 int tiny_method_threshold = CompilerOptions::kDefaultTinyMethodThreshold; 740 int num_dex_methods_threshold = CompilerOptions::kDefaultNumDexMethodsThreshold; 741 742 // Take the default set of instruction features from the build. 743 InstructionSetFeatures instruction_set_features = 744 ParseFeatureList(STRINGIFY(ART_DEFAULT_INSTRUCTION_SET_FEATURES)); 745 746#if defined(__arm__) 747 InstructionSet instruction_set = kThumb2; 748#elif defined(__i386__) 749 InstructionSet instruction_set = kX86; 750#elif defined(__mips__) 751 InstructionSet instruction_set = kMips; 752#else 753 InstructionSet instruction_set = kNone; 754#endif 755 756 757 bool is_host = false; 758 bool dump_stats = false; 759 bool dump_timing = false; 760 bool dump_passes = false; 761 bool dump_slow_timing = kIsDebugBuild; 762 bool watch_dog_enabled = !kIsTargetBuild; 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.starts_with("-j")) { 801 const char* thread_count_str = option.substr(strlen("-j")).data(); 802 if (!ParseInt(thread_count_str, &thread_count)) { 803 Usage("Failed to parse -j argument '%s' as an integer", thread_count_str); 804 } 805 } else if (option.starts_with("--oat-location=")) { 806 oat_location = option.substr(strlen("--oat-location=")).data(); 807 } else if (option.starts_with("--bitcode=")) { 808 bitcode_filename = option.substr(strlen("--bitcode=")).data(); 809 } else if (option.starts_with("--image=")) { 810 image_filename = option.substr(strlen("--image=")).data(); 811 } else if (option.starts_with("--image-classes=")) { 812 image_classes_filename = option.substr(strlen("--image-classes=")).data(); 813 } else if (option.starts_with("--image-classes-zip=")) { 814 image_classes_zip_filename = option.substr(strlen("--image-classes-zip=")).data(); 815 } else if (option.starts_with("--base=")) { 816 const char* image_base_str = option.substr(strlen("--base=")).data(); 817 char* end; 818 image_base = strtoul(image_base_str, &end, 16); 819 if (end == image_base_str || *end != '\0') { 820 Usage("Failed to parse hexadecimal value for option %s", option.data()); 821 } 822 } else if (option.starts_with("--boot-image=")) { 823 boot_image_filename = option.substr(strlen("--boot-image=")).data(); 824 } else if (option.starts_with("--host-prefix=")) { 825 host_prefix.reset(new std::string(option.substr(strlen("--host-prefix=")).data())); 826 } else if (option.starts_with("--android-root=")) { 827 android_root = option.substr(strlen("--android-root=")).data(); 828 } else if (option.starts_with("--instruction-set=")) { 829 StringPiece instruction_set_str = option.substr(strlen("--instruction-set=")).data(); 830 if (instruction_set_str == "arm") { 831 instruction_set = kThumb2; 832 } else if (instruction_set_str == "mips") { 833 instruction_set = kMips; 834 } else if (instruction_set_str == "x86") { 835 instruction_set = kX86; 836 } else if (instruction_set_str == "x86_64") { 837 instruction_set = kX86_64; 838 } 839 } else if (option.starts_with("--instruction-set-features=")) { 840 StringPiece str = option.substr(strlen("--instruction-set-features=")).data(); 841 instruction_set_features = ParseFeatureList(str.as_string()); 842 } else if (option.starts_with("--compiler-backend=")) { 843 StringPiece backend_str = option.substr(strlen("--compiler-backend=")).data(); 844 if (backend_str == "Quick") { 845 compiler_backend = CompilerBackend::kQuick; 846 } else if (backend_str == "Portable") { 847 compiler_backend = CompilerBackend::kPortable; 848 } 849 } else if (option.starts_with("--compiler-filter=")) { 850 compiler_filter_string = option.substr(strlen("--compiler-filter=")).data(); 851 } else if (option.starts_with("--huge-method-max=")) { 852 const char* threshold = option.substr(strlen("--huge-method-max=")).data(); 853 if (!ParseInt(threshold, &huge_method_threshold)) { 854 Usage("Failed to parse --huge-method-max '%s' as an integer", threshold); 855 } 856 if (huge_method_threshold < 0) { 857 Usage("--huge-method-max passed a negative value %s", huge_method_threshold); 858 } 859 } else if (option.starts_with("--large-method-max=")) { 860 const char* threshold = option.substr(strlen("--large-method-max=")).data(); 861 if (!ParseInt(threshold, &large_method_threshold)) { 862 Usage("Failed to parse --large-method-max '%s' as an integer", threshold); 863 } 864 if (large_method_threshold < 0) { 865 Usage("--large-method-max passed a negative value %s", large_method_threshold); 866 } 867 } else if (option.starts_with("--small-method-max=")) { 868 const char* threshold = option.substr(strlen("--small-method-max=")).data(); 869 if (!ParseInt(threshold, &small_method_threshold)) { 870 Usage("Failed to parse --small-method-max '%s' as an integer", threshold); 871 } 872 if (small_method_threshold < 0) { 873 Usage("--small-method-max passed a negative value %s", small_method_threshold); 874 } 875 } else if (option.starts_with("--tiny-method-max=")) { 876 const char* threshold = option.substr(strlen("--tiny-method-max=")).data(); 877 if (!ParseInt(threshold, &tiny_method_threshold)) { 878 Usage("Failed to parse --tiny-method-max '%s' as an integer", threshold); 879 } 880 if (tiny_method_threshold < 0) { 881 Usage("--tiny-method-max passed a negative value %s", tiny_method_threshold); 882 } 883 } else if (option.starts_with("--num-dex-methods=")) { 884 const char* threshold = option.substr(strlen("--num-dex-methods=")).data(); 885 if (!ParseInt(threshold, &num_dex_methods_threshold)) { 886 Usage("Failed to parse --num-dex-methods '%s' as an integer", threshold); 887 } 888 if (num_dex_methods_threshold < 0) { 889 Usage("--num-dex-methods passed a negative value %s", num_dex_methods_threshold); 890 } 891 } else if (option == "--host") { 892 is_host = true; 893 } else if (option == "--runtime-arg") { 894 if (++i >= argc) { 895 Usage("Missing required argument for --runtime-arg"); 896 } 897 if (log_options) { 898 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 899 } 900 runtime_args.push_back(argv[i]); 901 } else if (option == "--dump-timing") { 902 dump_timing = true; 903 } else if (option == "--dump-passes") { 904 dump_passes = true; 905 } else if (option == "--dump-stats") { 906 dump_stats = true; 907 } else { 908 Usage("Unknown argument %s", option.data()); 909 } 910 } 911 912 if (oat_filename.empty() && oat_fd == -1) { 913 Usage("Output must be supplied with either --oat-file or --oat-fd"); 914 } 915 916 if (!oat_filename.empty() && oat_fd != -1) { 917 Usage("--oat-file should not be used with --oat-fd"); 918 } 919 920 if (!oat_symbols.empty() && oat_fd != -1) { 921 Usage("--oat-symbols should not be used with --oat-fd"); 922 } 923 924 if (!oat_symbols.empty() && is_host) { 925 Usage("--oat-symbols should not be used with --host"); 926 } 927 928 if (oat_fd != -1 && !image_filename.empty()) { 929 Usage("--oat-fd should not be used with --image"); 930 } 931 932 if (host_prefix.get() == NULL) { 933 const char* android_product_out = getenv("ANDROID_PRODUCT_OUT"); 934 if (android_product_out != NULL) { 935 host_prefix.reset(new std::string(android_product_out)); 936 } 937 } 938 939 if (android_root.empty()) { 940 const char* android_root_env_var = getenv("ANDROID_ROOT"); 941 if (android_root_env_var == NULL) { 942 Usage("--android-root unspecified and ANDROID_ROOT not set"); 943 } 944 android_root += android_root_env_var; 945 } 946 947 bool image = (!image_filename.empty()); 948 if (!image && boot_image_filename.empty()) { 949 if (host_prefix.get() == NULL) { 950 boot_image_filename += GetAndroidRoot(); 951 } else { 952 boot_image_filename += *host_prefix.get(); 953 boot_image_filename += "/system"; 954 } 955 boot_image_filename += "/framework/boot.art"; 956 } 957 std::string boot_image_option; 958 if (!boot_image_filename.empty()) { 959 boot_image_option += "-Ximage:"; 960 boot_image_option += boot_image_filename; 961 } 962 963 if (image_classes_filename != NULL && !image) { 964 Usage("--image-classes should only be used with --image"); 965 } 966 967 if (image_classes_filename != NULL && !boot_image_option.empty()) { 968 Usage("--image-classes should not be used with --boot-image"); 969 } 970 971 if (image_classes_zip_filename != NULL && image_classes_filename == NULL) { 972 Usage("--image-classes-zip should be used with --image-classes"); 973 } 974 975 if (dex_filenames.empty() && zip_fd == -1) { 976 Usage("Input must be supplied with either --dex-file or --zip-fd"); 977 } 978 979 if (!dex_filenames.empty() && zip_fd != -1) { 980 Usage("--dex-file should not be used with --zip-fd"); 981 } 982 983 if (!dex_filenames.empty() && !zip_location.empty()) { 984 Usage("--dex-file should not be used with --zip-location"); 985 } 986 987 if (dex_locations.empty()) { 988 for (size_t i = 0; i < dex_filenames.size(); i++) { 989 dex_locations.push_back(dex_filenames[i]); 990 } 991 } else if (dex_locations.size() != dex_filenames.size()) { 992 Usage("--dex-location arguments do not match --dex-file arguments"); 993 } 994 995 if (zip_fd != -1 && zip_location.empty()) { 996 Usage("--zip-location should be supplied with --zip-fd"); 997 } 998 999 if (boot_image_option.empty()) { 1000 if (image_base == 0) { 1001 Usage("Non-zero --base not specified"); 1002 } 1003 } 1004 1005 std::string oat_stripped(oat_filename); 1006 std::string oat_unstripped; 1007 if (!oat_symbols.empty()) { 1008 oat_unstripped += oat_symbols; 1009 } else { 1010 oat_unstripped += oat_filename; 1011 } 1012 1013 if (compiler_filter_string == NULL) { 1014 if (image) { 1015 compiler_filter_string = "everything"; 1016 } else { 1017#if ART_SMALL_MODE 1018 compiler_filter_string = "interpret-only"; 1019#else 1020 compiler_filter_string = "speed"; 1021#endif 1022 } 1023 } 1024 CHECK(compiler_filter_string != nullptr); 1025 CompilerOptions::CompilerFilter compiler_filter = CompilerOptions::kDefaultCompilerFilter; 1026 if (strcmp(compiler_filter_string, "interpret-only") == 0) { 1027 compiler_filter = CompilerOptions::kInterpretOnly; 1028 } else if (strcmp(compiler_filter_string, "space") == 0) { 1029 compiler_filter = CompilerOptions::kSpace; 1030 } else if (strcmp(compiler_filter_string, "balanced") == 0) { 1031 compiler_filter = CompilerOptions::kBalanced; 1032 } else if (strcmp(compiler_filter_string, "speed") == 0) { 1033 compiler_filter = CompilerOptions::kSpeed; 1034 } else if (strcmp(compiler_filter_string, "everything") == 0) { 1035 compiler_filter = CompilerOptions::kEverything; 1036 } else { 1037 Usage("Unknown --compiler-filter value %s", compiler_filter_string); 1038 } 1039 1040 CompilerOptions compiler_options(compiler_filter, 1041 huge_method_threshold, 1042 large_method_threshold, 1043 small_method_threshold, 1044 tiny_method_threshold, 1045 num_dex_methods_threshold 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 if (host_prefix.get() != NULL) { 1092 runtime_options.push_back(std::make_pair("host-prefix", host_prefix->c_str())); 1093 } 1094 for (size_t i = 0; i < runtime_args.size(); i++) { 1095 runtime_options.push_back(std::make_pair(runtime_args[i], reinterpret_cast<void*>(NULL))); 1096 } 1097 1098 VerificationResults verification_results(&compiler_options); 1099 DexFileToMethodInlinerMap method_inliner_map; 1100 CompilerCallbacksImpl callbacks(&verification_results, &method_inliner_map); 1101 runtime_options.push_back(std::make_pair("compilercallbacks", &callbacks)); 1102 1103 Dex2Oat* p_dex2oat; 1104 if (!Dex2Oat::Create(&p_dex2oat, 1105 runtime_options, 1106 compiler_options, 1107 compiler_backend, 1108 instruction_set, 1109 instruction_set_features, 1110 &verification_results, 1111 &method_inliner_map, 1112 thread_count)) { 1113 LOG(ERROR) << "Failed to create dex2oat"; 1114 return EXIT_FAILURE; 1115 } 1116 UniquePtr<Dex2Oat> dex2oat(p_dex2oat); 1117 // Runtime::Create acquired the mutator_lock_ that is normally given away when we Runtime::Start, 1118 // give it away now so that we don't starve GC. 1119 Thread* self = Thread::Current(); 1120 self->TransitionFromRunnableToSuspended(kNative); 1121 // If we're doing the image, override the compiler filter to force full compilation. Must be 1122 // done ahead of WellKnownClasses::Init that causes verification. Note: doesn't force 1123 // compilation of class initializers. 1124 // Whilst we're in native take the opportunity to initialize well known classes. 1125 WellKnownClasses::Init(self->GetJniEnv()); 1126 1127 // If --image-classes was specified, calculate the full list of classes to include in the image 1128 UniquePtr<CompilerDriver::DescriptorSet> image_classes(NULL); 1129 if (image_classes_filename != NULL) { 1130 std::string error_msg; 1131 if (image_classes_zip_filename != NULL) { 1132 image_classes.reset(dex2oat->ReadImageClassesFromZip(image_classes_zip_filename, 1133 image_classes_filename, 1134 &error_msg)); 1135 } else { 1136 image_classes.reset(dex2oat->ReadImageClassesFromFile(image_classes_filename)); 1137 } 1138 if (image_classes.get() == NULL) { 1139 LOG(ERROR) << "Failed to create list of image classes from '" << image_classes_filename << 1140 "': " << error_msg; 1141 return EXIT_FAILURE; 1142 } 1143 } 1144 1145 std::vector<const DexFile*> dex_files; 1146 if (boot_image_option.empty()) { 1147 dex_files = Runtime::Current()->GetClassLinker()->GetBootClassPath(); 1148 } else { 1149 if (dex_filenames.empty()) { 1150 ATRACE_BEGIN("Opening zip archive from file descriptor"); 1151 std::string error_msg; 1152 UniquePtr<ZipArchive> zip_archive(ZipArchive::OpenFromFd(zip_fd, zip_location.c_str(), 1153 &error_msg)); 1154 if (zip_archive.get() == NULL) { 1155 LOG(ERROR) << "Failed to open zip from file descriptor for '" << zip_location << "': " 1156 << error_msg; 1157 return EXIT_FAILURE; 1158 } 1159 const DexFile* dex_file = DexFile::Open(*zip_archive.get(), zip_location, &error_msg); 1160 if (dex_file == NULL) { 1161 LOG(ERROR) << "Failed to open dex from file descriptor for zip file '" << zip_location 1162 << "': " << error_msg; 1163 return EXIT_FAILURE; 1164 } 1165 dex_files.push_back(dex_file); 1166 ATRACE_END(); 1167 } else { 1168 size_t failure_count = OpenDexFiles(dex_filenames, dex_locations, dex_files); 1169 if (failure_count > 0) { 1170 LOG(ERROR) << "Failed to open some dex files: " << failure_count; 1171 return EXIT_FAILURE; 1172 } 1173 } 1174 1175 const bool kSaveDexInput = false; 1176 if (kSaveDexInput) { 1177 for (size_t i = 0; i < dex_files.size(); ++i) { 1178 const DexFile* dex_file = dex_files[i]; 1179 std::string tmp_file_name(StringPrintf("/data/local/tmp/dex2oat.%d.%zd.dex", getpid(), i)); 1180 UniquePtr<File> tmp_file(OS::CreateEmptyFile(tmp_file_name.c_str())); 1181 if (tmp_file.get() == nullptr) { 1182 PLOG(ERROR) << "Failed to open file " << tmp_file_name 1183 << ". Try: adb shell chmod 777 /data/local/tmp"; 1184 continue; 1185 } 1186 tmp_file->WriteFully(dex_file->Begin(), dex_file->Size()); 1187 LOG(INFO) << "Wrote input to " << tmp_file_name; 1188 } 1189 } 1190 1191 // Ensure opened dex files are writable for dex-to-dex transformations. 1192 for (const auto& dex_file : dex_files) { 1193 if (!dex_file->EnableWrite()) { 1194 PLOG(ERROR) << "Failed to make .dex file writeable '" << dex_file->GetLocation() << "'\n"; 1195 } 1196 } 1197 } 1198 1199 /* 1200 * If we're not in interpret-only mode, go ahead and compile small applications. Don't 1201 * bother to check if we're doing the image. 1202 */ 1203 if (!image && (compiler_options.GetCompilerFilter() != CompilerOptions::kInterpretOnly)) { 1204 size_t num_methods = 0; 1205 for (size_t i = 0; i != dex_files.size(); ++i) { 1206 const DexFile* dex_file = dex_files[i]; 1207 CHECK(dex_file != NULL); 1208 num_methods += dex_file->NumMethodIds(); 1209 } 1210 if (num_methods <= compiler_options.GetNumDexMethodsThreshold()) { 1211 compiler_options.SetCompilerFilter(CompilerOptions::kSpeed); 1212 VLOG(compiler) << "Below method threshold, compiling anyways"; 1213 } 1214 } 1215 1216 UniquePtr<const CompilerDriver> compiler(dex2oat->CreateOatFile(boot_image_option, 1217 host_prefix.get(), 1218 android_root, 1219 is_host, 1220 dex_files, 1221 oat_file.get(), 1222 bitcode_filename, 1223 image, 1224 image_classes, 1225 dump_stats, 1226 dump_passes, 1227 timings, 1228 compiler_phases_timings)); 1229 1230 if (compiler.get() == NULL) { 1231 LOG(ERROR) << "Failed to create oat file: " << oat_location; 1232 return EXIT_FAILURE; 1233 } 1234 1235 VLOG(compiler) << "Oat file written successfully (unstripped): " << oat_location; 1236 1237 // Notes on the interleaving of creating the image and oat file to 1238 // ensure the references between the two are correct. 1239 // 1240 // Currently we have a memory layout that looks something like this: 1241 // 1242 // +--------------+ 1243 // | image | 1244 // +--------------+ 1245 // | boot oat | 1246 // +--------------+ 1247 // | alloc spaces | 1248 // +--------------+ 1249 // 1250 // There are several constraints on the loading of the image and boot.oat. 1251 // 1252 // 1. The image is expected to be loaded at an absolute address and 1253 // contains Objects with absolute pointers within the image. 1254 // 1255 // 2. There are absolute pointers from Methods in the image to their 1256 // code in the oat. 1257 // 1258 // 3. There are absolute pointers from the code in the oat to Methods 1259 // in the image. 1260 // 1261 // 4. There are absolute pointers from code in the oat to other code 1262 // in the oat. 1263 // 1264 // To get this all correct, we go through several steps. 1265 // 1266 // 1. We have already created that oat file above with 1267 // CreateOatFile. Originally this was just our own proprietary file 1268 // but now it is contained within an ELF dynamic object (aka an .so 1269 // file). The Compiler returned by CreateOatFile provides 1270 // PatchInformation for references to oat code and Methods that need 1271 // to be update once we know where the oat file will be located 1272 // after the image. 1273 // 1274 // 2. We create the image file. It needs to know where the oat file 1275 // will be loaded after itself. Originally when oat file was simply 1276 // memory mapped so we could predict where its contents were based 1277 // on the file size. Now that it is an ELF file, we need to inspect 1278 // the ELF file to understand the in memory segment layout including 1279 // where the oat header is located within. ImageWriter's 1280 // PatchOatCodeAndMethods uses the PatchInformation from the 1281 // Compiler to touch up absolute references in the oat file. 1282 // 1283 // 3. We fixup the ELF program headers so that dlopen will try to 1284 // load the .so at the desired location at runtime by offsetting the 1285 // Elf32_Phdr.p_vaddr values by the desired base address. 1286 // 1287 if (image) { 1288 timings.NewSplit("dex2oat ImageWriter"); 1289 bool image_creation_success = dex2oat->CreateImageFile(image_filename, 1290 image_base, 1291 oat_unstripped, 1292 oat_location, 1293 *compiler.get()); 1294 if (!image_creation_success) { 1295 return EXIT_FAILURE; 1296 } 1297 VLOG(compiler) << "Image written successfully: " << image_filename; 1298 } 1299 1300 if (is_host) { 1301 if (dump_timing || (dump_slow_timing && timings.GetTotalNs() > MsToNs(1000))) { 1302 LOG(INFO) << Dumpable<TimingLogger>(timings); 1303 } 1304 if (dump_passes) { 1305 LOG(INFO) << Dumpable<CumulativeLogger>(compiler.get()->GetTimingsLogger()); 1306 } 1307 return EXIT_SUCCESS; 1308 } 1309 1310 // If we don't want to strip in place, copy from unstripped location to stripped location. 1311 // We need to strip after image creation because FixupElf needs to use .strtab. 1312 if (oat_unstripped != oat_stripped) { 1313 timings.NewSplit("dex2oat OatFile copy"); 1314 oat_file.reset(); 1315 UniquePtr<File> in(OS::OpenFileForReading(oat_unstripped.c_str())); 1316 UniquePtr<File> out(OS::CreateEmptyFile(oat_stripped.c_str())); 1317 size_t buffer_size = 8192; 1318 UniquePtr<uint8_t> buffer(new uint8_t[buffer_size]); 1319 while (true) { 1320 int bytes_read = TEMP_FAILURE_RETRY(read(in->Fd(), buffer.get(), buffer_size)); 1321 if (bytes_read <= 0) { 1322 break; 1323 } 1324 bool write_ok = out->WriteFully(buffer.get(), bytes_read); 1325 CHECK(write_ok); 1326 } 1327 oat_file.reset(out.release()); 1328 VLOG(compiler) << "Oat file copied successfully (stripped): " << oat_stripped; 1329 } 1330 1331#if ART_USE_PORTABLE_COMPILER // We currently only generate symbols on Portable 1332 timings.NewSplit("dex2oat ElfStripper"); 1333 // Strip unneeded sections for target 1334 off_t seek_actual = lseek(oat_file->Fd(), 0, SEEK_SET); 1335 CHECK_EQ(0, seek_actual); 1336 std::string error_msg; 1337 CHECK(ElfStripper::Strip(oat_file.get(), &error_msg)) << error_msg; 1338 1339 1340 // We wrote the oat file successfully, and want to keep it. 1341 VLOG(compiler) << "Oat file written successfully (stripped): " << oat_location; 1342#endif // ART_USE_PORTABLE_COMPILER 1343 1344 timings.EndSplit(); 1345 1346 if (dump_timing || (dump_slow_timing && timings.GetTotalNs() > MsToNs(1000))) { 1347 LOG(INFO) << Dumpable<TimingLogger>(timings); 1348 } 1349 if (dump_passes) { 1350 LOG(INFO) << Dumpable<CumulativeLogger>(compiler_phases_timings); 1351 } 1352 1353 // Everything was successfully written, do an explicit exit here to avoid running Runtime 1354 // destructors that take time (bug 10645725) unless we're a debug build or running on valgrind. 1355 if (!kIsDebugBuild && (RUNNING_ON_VALGRIND == 0)) { 1356 dex2oat->LogCompletionTime(); 1357 exit(EXIT_SUCCESS); 1358 } 1359 1360 return EXIT_SUCCESS; 1361} // NOLINT(readability/fn_size) 1362} // namespace art 1363 1364int main(int argc, char** argv) { 1365 return art::dex2oat(argc, argv); 1366} 1367