dex2oat.cc revision 9e06c8cd4a2e1471754470e09aaab63c0795b4af
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.h" 34#include "compiler_callbacks.h" 35#include "dex_file-inl.h" 36#include "dex/pass_driver.h" 37#include "dex/verification_results.h" 38#include "driver/compiler_callbacks_impl.h" 39#include "driver/compiler_driver.h" 40#include "driver/compiler_options.h" 41#include "elf_fixup.h" 42#include "elf_stripper.h" 43#include "gc/space/image_space.h" 44#include "gc/space/space-inl.h" 45#include "image_writer.h" 46#include "leb128.h" 47#include "mirror/art_method-inl.h" 48#include "mirror/class-inl.h" 49#include "mirror/class_loader.h" 50#include "mirror/object-inl.h" 51#include "mirror/object_array-inl.h" 52#include "oat_writer.h" 53#include "object_utils.h" 54#include "os.h" 55#include "runtime.h" 56#include "ScopedLocalRef.h" 57#include "scoped_thread_state_change.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-fd=6"); 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: $ANDROID_ROOT/system/framework/boot.art"); 137 UsageError(""); 138 UsageError(" --android-root=<path>: used to locate libraries for portable linking."); 139 UsageError(" Example: --android-root=out/host/linux-x86"); 140 UsageError(" Default: $ANDROID_ROOT"); 141 UsageError(""); 142 UsageError(" --instruction-set=(arm|arm64|mips|x86|x86_64): compile for a particular instruction"); 143 UsageError(" set."); 144 UsageError(" Example: --instruction-set=x86"); 145 UsageError(" Default: arm"); 146 UsageError(""); 147 UsageError(" --instruction-set-features=...,: Specify instruction set features"); 148 UsageError(" Example: --instruction-set-features=div"); 149 UsageError(" Default: default"); 150 UsageError(""); 151 UsageError(" --compiler-backend=(Quick|Optimizing|Portable): select compiler backend"); 152 UsageError(" set."); 153 UsageError(" Example: --compiler-backend=Portable"); 154 UsageError(" Default: Quick"); 155 UsageError(""); 156 UsageError(" --compiler-filter=(verify-none|interpret-only|space|balanced|speed|everything):"); 157 UsageError(" select compiler filter."); 158 UsageError(" Example: --compiler-filter=everything"); 159#if ART_SMALL_MODE 160 UsageError(" Default: interpret-only"); 161#else 162 UsageError(" Default: speed"); 163#endif 164 UsageError(""); 165 UsageError(" --huge-method-max=<method-instruction-count>: the threshold size for a huge"); 166 UsageError(" method for compiler filter tuning."); 167 UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold); 168 UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold); 169 UsageError(""); 170 UsageError(" --huge-method-max=<method-instruction-count>: 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(" --large-method-max=<method-instruction-count>: threshold size for a large"); 176 UsageError(" method for compiler filter tuning."); 177 UsageError(" Example: --large-method-max=%d", CompilerOptions::kDefaultLargeMethodThreshold); 178 UsageError(" Default: %d", CompilerOptions::kDefaultLargeMethodThreshold); 179 UsageError(""); 180 UsageError(" --small-method-max=<method-instruction-count>: threshold size for a small"); 181 UsageError(" method for compiler filter tuning."); 182 UsageError(" Example: --small-method-max=%d", CompilerOptions::kDefaultSmallMethodThreshold); 183 UsageError(" Default: %d", CompilerOptions::kDefaultSmallMethodThreshold); 184 UsageError(""); 185 UsageError(" --tiny-method-max=<method-instruction-count>: threshold size for a tiny"); 186 UsageError(" method for compiler filter tuning."); 187 UsageError(" Example: --tiny-method-max=%d", CompilerOptions::kDefaultTinyMethodThreshold); 188 UsageError(" Default: %d", CompilerOptions::kDefaultTinyMethodThreshold); 189 UsageError(""); 190 UsageError(" --num-dex-methods=<method-count>: threshold size for a small dex file for"); 191 UsageError(" compiler filter tuning. If the input has fewer than this many methods"); 192 UsageError(" and the filter is not interpret-only or verify-none, overrides the"); 193 UsageError(" filter to use speed"); 194 UsageError(" Example: --num-dex-method=%d", CompilerOptions::kDefaultNumDexMethodsThreshold); 195 UsageError(" Default: %d", CompilerOptions::kDefaultNumDexMethodsThreshold); 196 UsageError(""); 197 UsageError(" --host: used with Portable backend to link against host runtime libraries"); 198 UsageError(""); 199 UsageError(" --dump-timing: display a breakdown of where time was spent"); 200 UsageError(""); 201 UsageError(" --runtime-arg <argument>: used to specify various arguments for the runtime,"); 202 UsageError(" such as initial heap size, maximum heap size, and verbose output."); 203 UsageError(" Use a separate --runtime-arg switch for each argument."); 204 UsageError(" Example: --runtime-arg -Xms256m"); 205 UsageError(""); 206 UsageError(" --profile-file=<filename>: specify profiler output file to use for compilation."); 207 UsageError(""); 208 UsageError(" --print-pass-names: print a list of pass names"); 209 UsageError(""); 210 UsageError(" --disable-passes=<pass-names>: disable one or more passes separated by comma."); 211 UsageError(" Example: --disable-passes=UseCount,BBOptimizations"); 212 UsageError(""); 213 std::cerr << "See log for usage error information\n"; 214 exit(EXIT_FAILURE); 215} 216 217class Dex2Oat { 218 public: 219 static bool Create(Dex2Oat** p_dex2oat, 220 const Runtime::Options& runtime_options, 221 const CompilerOptions& compiler_options, 222 Compiler::Kind compiler_kind, 223 InstructionSet instruction_set, 224 InstructionSetFeatures instruction_set_features, 225 VerificationResults* verification_results, 226 DexFileToMethodInlinerMap* method_inliner_map, 227 size_t thread_count) 228 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_) { 229 CHECK(verification_results != nullptr); 230 CHECK(method_inliner_map != nullptr); 231 UniquePtr<Dex2Oat> dex2oat(new Dex2Oat(&compiler_options, 232 compiler_kind, 233 instruction_set, 234 instruction_set_features, 235 verification_results, 236 method_inliner_map, 237 thread_count)); 238 if (!dex2oat->CreateRuntime(runtime_options, instruction_set)) { 239 *p_dex2oat = NULL; 240 return false; 241 } 242 *p_dex2oat = dex2oat.release(); 243 return true; 244 } 245 246 ~Dex2Oat() { 247 delete runtime_; 248 LogCompletionTime(); 249 } 250 251 void LogCompletionTime() { 252 LOG(INFO) << "dex2oat took " << PrettyDuration(NanoTime() - start_ns_) 253 << " (threads: " << thread_count_ << ")"; 254 } 255 256 257 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 258 CompilerDriver::DescriptorSet* ReadImageClassesFromFile(const char* image_classes_filename) { 259 UniquePtr<std::ifstream> image_classes_file(new std::ifstream(image_classes_filename, 260 std::ifstream::in)); 261 if (image_classes_file.get() == NULL) { 262 LOG(ERROR) << "Failed to open image classes file " << image_classes_filename; 263 return NULL; 264 } 265 UniquePtr<CompilerDriver::DescriptorSet> result(ReadImageClasses(*image_classes_file.get())); 266 image_classes_file->close(); 267 return result.release(); 268 } 269 270 CompilerDriver::DescriptorSet* ReadImageClasses(std::istream& image_classes_stream) { 271 UniquePtr<CompilerDriver::DescriptorSet> image_classes(new CompilerDriver::DescriptorSet); 272 while (image_classes_stream.good()) { 273 std::string dot; 274 std::getline(image_classes_stream, dot); 275 if (StartsWith(dot, "#") || dot.empty()) { 276 continue; 277 } 278 std::string descriptor(DotToDescriptor(dot.c_str())); 279 image_classes->insert(descriptor); 280 } 281 return image_classes.release(); 282 } 283 284 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 285 CompilerDriver::DescriptorSet* ReadImageClassesFromZip(const char* zip_filename, 286 const char* image_classes_filename, 287 std::string* error_msg) { 288 UniquePtr<ZipArchive> zip_archive(ZipArchive::Open(zip_filename, error_msg)); 289 if (zip_archive.get() == NULL) { 290 return NULL; 291 } 292 UniquePtr<ZipEntry> zip_entry(zip_archive->Find(image_classes_filename, error_msg)); 293 if (zip_entry.get() == NULL) { 294 *error_msg = StringPrintf("Failed to find '%s' within '%s': %s", image_classes_filename, 295 zip_filename, error_msg->c_str()); 296 return NULL; 297 } 298 UniquePtr<MemMap> image_classes_file(zip_entry->ExtractToMemMap(image_classes_filename, 299 error_msg)); 300 if (image_classes_file.get() == NULL) { 301 *error_msg = StringPrintf("Failed to extract '%s' from '%s': %s", image_classes_filename, 302 zip_filename, error_msg->c_str()); 303 return NULL; 304 } 305 const std::string image_classes_string(reinterpret_cast<char*>(image_classes_file->Begin()), 306 image_classes_file->Size()); 307 std::istringstream image_classes_stream(image_classes_string); 308 return ReadImageClasses(image_classes_stream); 309 } 310 311 const CompilerDriver* CreateOatFile(const std::string& boot_image_option, 312 const std::string& android_root, 313 bool is_host, 314 const std::vector<const DexFile*>& dex_files, 315 File* oat_file, 316 const std::string& bitcode_filename, 317 bool image, 318 UniquePtr<CompilerDriver::DescriptorSet>& image_classes, 319 bool dump_stats, 320 bool dump_passes, 321 TimingLogger& timings, 322 CumulativeLogger& compiler_phases_timings, 323 std::string profile_file) { 324 // SirtRef and ClassLoader creation needs to come after Runtime::Create 325 jobject class_loader = NULL; 326 Thread* self = Thread::Current(); 327 if (!boot_image_option.empty()) { 328 ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 329 std::vector<const DexFile*> class_path_files(dex_files); 330 OpenClassPathFiles(runtime_->GetClassPathString(), class_path_files); 331 ScopedObjectAccess soa(self); 332 for (size_t i = 0; i < class_path_files.size(); i++) { 333 class_linker->RegisterDexFile(*class_path_files[i]); 334 } 335 soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader); 336 ScopedLocalRef<jobject> class_loader_local(soa.Env(), 337 soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader)); 338 class_loader = soa.Env()->NewGlobalRef(class_loader_local.get()); 339 Runtime::Current()->SetCompileTimeClassPath(class_loader, class_path_files); 340 } 341 342 UniquePtr<CompilerDriver> driver(new CompilerDriver(compiler_options_, 343 verification_results_, 344 method_inliner_map_, 345 compiler_kind_, 346 instruction_set_, 347 instruction_set_features_, 348 image, 349 image_classes.release(), 350 thread_count_, 351 dump_stats, 352 dump_passes, 353 &compiler_phases_timings, 354 profile_file)); 355 356 driver->GetCompiler()->SetBitcodeFileName(*driver.get(), bitcode_filename); 357 358 driver->CompileAll(class_loader, dex_files, &timings); 359 360 timings.NewSplit("dex2oat OatWriter"); 361 std::string image_file_location; 362 uint32_t image_file_location_oat_checksum = 0; 363 uintptr_t image_file_location_oat_data_begin = 0; 364 if (!driver->IsImage()) { 365 TimingLogger::ScopedSplit split("Loading image checksum", &timings); 366 gc::space::ImageSpace* image_space = Runtime::Current()->GetHeap()->GetImageSpace(); 367 image_file_location_oat_checksum = image_space->GetImageHeader().GetOatChecksum(); 368 image_file_location_oat_data_begin = 369 reinterpret_cast<uintptr_t>(image_space->GetImageHeader().GetOatDataBegin()); 370 image_file_location = image_space->GetImageFilename(); 371 } 372 373 OatWriter oat_writer(dex_files, 374 image_file_location_oat_checksum, 375 image_file_location_oat_data_begin, 376 image_file_location, 377 driver.get(), 378 &timings); 379 380 TimingLogger::ScopedSplit split("Writing ELF", &timings); 381 if (!driver->WriteElf(android_root, is_host, dex_files, &oat_writer, oat_file)) { 382 LOG(ERROR) << "Failed to write ELF file " << oat_file->GetPath(); 383 return NULL; 384 } 385 386 return driver.release(); 387 } 388 389 bool CreateImageFile(const std::string& image_filename, 390 uintptr_t image_base, 391 const std::string& oat_filename, 392 const std::string& oat_location, 393 const CompilerDriver& compiler) 394 LOCKS_EXCLUDED(Locks::mutator_lock_) { 395 uintptr_t oat_data_begin; 396 { 397 // ImageWriter is scoped so it can free memory before doing FixupElf 398 ImageWriter image_writer(compiler); 399 if (!image_writer.Write(image_filename, image_base, oat_filename, oat_location)) { 400 LOG(ERROR) << "Failed to create image file " << image_filename; 401 return false; 402 } 403 oat_data_begin = image_writer.GetOatDataBegin(); 404 } 405 406 UniquePtr<File> oat_file(OS::OpenFileReadWrite(oat_filename.c_str())); 407 if (oat_file.get() == NULL) { 408 PLOG(ERROR) << "Failed to open ELF file: " << oat_filename; 409 return false; 410 } 411 if (!ElfFixup::Fixup(oat_file.get(), oat_data_begin)) { 412 LOG(ERROR) << "Failed to fixup ELF file " << oat_file->GetPath(); 413 return false; 414 } 415 return true; 416 } 417 418 private: 419 explicit Dex2Oat(const CompilerOptions* compiler_options, 420 Compiler::Kind compiler_kind, 421 InstructionSet instruction_set, 422 InstructionSetFeatures instruction_set_features, 423 VerificationResults* verification_results, 424 DexFileToMethodInlinerMap* method_inliner_map, 425 size_t thread_count) 426 : compiler_options_(compiler_options), 427 compiler_kind_(compiler_kind), 428 instruction_set_(instruction_set), 429 instruction_set_features_(instruction_set_features), 430 verification_results_(verification_results), 431 method_inliner_map_(method_inliner_map), 432 runtime_(nullptr), 433 thread_count_(thread_count), 434 start_ns_(NanoTime()) { 435 CHECK(compiler_options != nullptr); 436 CHECK(verification_results != nullptr); 437 CHECK(method_inliner_map != nullptr); 438 } 439 440 bool CreateRuntime(const Runtime::Options& runtime_options, InstructionSet instruction_set) 441 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_) { 442 if (!Runtime::Create(runtime_options, false)) { 443 LOG(ERROR) << "Failed to create runtime"; 444 return false; 445 } 446 Runtime* runtime = Runtime::Current(); 447 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 448 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 449 if (!runtime->HasCalleeSaveMethod(type)) { 450 runtime->SetCalleeSaveMethod(runtime->CreateCalleeSaveMethod(instruction_set, type), type); 451 } 452 } 453 runtime->GetClassLinker()->FixupDexCaches(runtime->GetResolutionMethod()); 454 runtime_ = runtime; 455 return true; 456 } 457 458 // Appends to dex_files any elements of class_path that it doesn't already 459 // contain. This will open those dex files as necessary. 460 static void OpenClassPathFiles(const std::string& class_path, 461 std::vector<const DexFile*>& dex_files) { 462 std::vector<std::string> parsed; 463 Split(class_path, ':', parsed); 464 // Take Locks::mutator_lock_ so that lock ordering on the ClassLinker::dex_lock_ is maintained. 465 ScopedObjectAccess soa(Thread::Current()); 466 for (size_t i = 0; i < parsed.size(); ++i) { 467 if (DexFilesContains(dex_files, parsed[i])) { 468 continue; 469 } 470 std::string error_msg; 471 const DexFile* dex_file = DexFile::Open(parsed[i].c_str(), parsed[i].c_str(), &error_msg); 472 if (dex_file == NULL) { 473 LOG(WARNING) << "Failed to open dex file '" << parsed[i] << "': " << error_msg; 474 } else { 475 dex_files.push_back(dex_file); 476 } 477 } 478 } 479 480 // Returns true if dex_files has a dex with the named location. 481 static bool DexFilesContains(const std::vector<const DexFile*>& dex_files, 482 const std::string& location) { 483 for (size_t i = 0; i < dex_files.size(); ++i) { 484 if (dex_files[i]->GetLocation() == location) { 485 return true; 486 } 487 } 488 return false; 489 } 490 491 const CompilerOptions* const compiler_options_; 492 const Compiler::Kind compiler_kind_; 493 494 const InstructionSet instruction_set_; 495 const InstructionSetFeatures instruction_set_features_; 496 497 VerificationResults* const verification_results_; 498 DexFileToMethodInlinerMap* const method_inliner_map_; 499 Runtime* runtime_; 500 size_t thread_count_; 501 uint64_t start_ns_; 502 503 DISALLOW_IMPLICIT_CONSTRUCTORS(Dex2Oat); 504}; 505 506static bool ParseInt(const char* in, int* out) { 507 char* end; 508 int result = strtol(in, &end, 10); 509 if (in == end || *end != '\0') { 510 return false; 511 } 512 *out = result; 513 return true; 514} 515 516static size_t OpenDexFiles(const std::vector<const char*>& dex_filenames, 517 const std::vector<const char*>& dex_locations, 518 std::vector<const DexFile*>& dex_files) { 519 size_t failure_count = 0; 520 for (size_t i = 0; i < dex_filenames.size(); i++) { 521 const char* dex_filename = dex_filenames[i]; 522 const char* dex_location = dex_locations[i]; 523 ATRACE_BEGIN(StringPrintf("Opening dex file '%s'", dex_filenames[i]).c_str()); 524 std::string error_msg; 525 if (!OS::FileExists(dex_filename)) { 526 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 527 continue; 528 } 529 const DexFile* dex_file = DexFile::Open(dex_filename, dex_location, &error_msg); 530 if (dex_file == NULL) { 531 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 532 ++failure_count; 533 } else { 534 dex_files.push_back(dex_file); 535 } 536 ATRACE_END(); 537 } 538 return failure_count; 539} 540 541// The primary goal of the watchdog is to prevent stuck build servers 542// during development when fatal aborts lead to a cascade of failures 543// that result in a deadlock. 544class WatchDog { 545// WatchDog defines its own CHECK_PTHREAD_CALL to avoid using Log which uses locks 546#undef CHECK_PTHREAD_CALL 547#define CHECK_WATCH_DOG_PTHREAD_CALL(call, args, what) \ 548 do { \ 549 int rc = call args; \ 550 if (rc != 0) { \ 551 errno = rc; \ 552 std::string message(# call); \ 553 message += " failed for "; \ 554 message += reason; \ 555 Fatal(message); \ 556 } \ 557 } while (false) 558 559 public: 560 explicit WatchDog(bool is_watch_dog_enabled) { 561 is_watch_dog_enabled_ = is_watch_dog_enabled; 562 if (!is_watch_dog_enabled_) { 563 return; 564 } 565 shutting_down_ = false; 566 const char* reason = "dex2oat watch dog thread startup"; 567 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_init, (&mutex_, NULL), reason); 568 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_init, (&cond_, NULL), reason); 569 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_init, (&attr_), reason); 570 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_create, (&pthread_, &attr_, &CallBack, this), reason); 571 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_destroy, (&attr_), reason); 572 } 573 ~WatchDog() { 574 if (!is_watch_dog_enabled_) { 575 return; 576 } 577 const char* reason = "dex2oat watch dog thread shutdown"; 578 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 579 shutting_down_ = true; 580 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_signal, (&cond_), reason); 581 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 582 583 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_join, (pthread_, NULL), reason); 584 585 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_destroy, (&cond_), reason); 586 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_destroy, (&mutex_), reason); 587 } 588 589 private: 590 static void* CallBack(void* arg) { 591 WatchDog* self = reinterpret_cast<WatchDog*>(arg); 592 ::art::SetThreadName("dex2oat watch dog"); 593 self->Wait(); 594 return NULL; 595 } 596 597 static void Message(char severity, const std::string& message) { 598 // TODO: Remove when we switch to LOG when we can guarantee it won't prevent shutdown in error 599 // cases. 600 fprintf(stderr, "dex2oat%s %c %d %d %s\n", 601 kIsDebugBuild ? "d" : "", 602 severity, 603 getpid(), 604 GetTid(), 605 message.c_str()); 606 } 607 608 static void Warn(const std::string& message) { 609 Message('W', message); 610 } 611 612 static void Fatal(const std::string& message) { 613 Message('F', message); 614 exit(1); 615 } 616 617 void Wait() { 618 bool warning = true; 619 CHECK_GT(kWatchDogTimeoutSeconds, kWatchDogWarningSeconds); 620 // TODO: tune the multiplier for GC verification, the following is just to make the timeout 621 // large. 622 int64_t multiplier = kVerifyObjectSupport > kVerifyObjectModeFast ? 100 : 1; 623 timespec warning_ts; 624 InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogWarningSeconds * 1000, 0, &warning_ts); 625 timespec timeout_ts; 626 InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogTimeoutSeconds * 1000, 0, &timeout_ts); 627 const char* reason = "dex2oat watch dog thread waiting"; 628 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 629 while (!shutting_down_) { 630 int rc = TEMP_FAILURE_RETRY(pthread_cond_timedwait(&cond_, &mutex_, 631 warning ? &warning_ts 632 : &timeout_ts)); 633 if (rc == ETIMEDOUT) { 634 std::string message(StringPrintf("dex2oat did not finish after %d seconds", 635 warning ? kWatchDogWarningSeconds 636 : kWatchDogTimeoutSeconds)); 637 if (warning) { 638 Warn(message.c_str()); 639 warning = false; 640 } else { 641 Fatal(message.c_str()); 642 } 643 } else if (rc != 0) { 644 std::string message(StringPrintf("pthread_cond_timedwait failed: %s", 645 strerror(errno))); 646 Fatal(message.c_str()); 647 } 648 } 649 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 650 } 651 652 // When setting timeouts, keep in mind that the build server may not be as fast as your desktop. 653#if ART_USE_PORTABLE_COMPILER 654 static const unsigned int kWatchDogWarningSeconds = 2 * 60; // 2 minutes. 655 static const unsigned int kWatchDogTimeoutSeconds = 30 * 60; // 25 minutes + buffer. 656#else 657 static const unsigned int kWatchDogWarningSeconds = 1 * 60; // 1 minute. 658 static const unsigned int kWatchDogTimeoutSeconds = 6 * 60; // 5 minutes + buffer. 659#endif 660 661 bool is_watch_dog_enabled_; 662 bool shutting_down_; 663 // TODO: Switch to Mutex when we can guarantee it won't prevent shutdown in error cases. 664 pthread_mutex_t mutex_; 665 pthread_cond_t cond_; 666 pthread_attr_t attr_; 667 pthread_t pthread_; 668}; 669const unsigned int WatchDog::kWatchDogWarningSeconds; 670const unsigned int WatchDog::kWatchDogTimeoutSeconds; 671 672// Given a set of instruction features from the build, parse it. The 673// input 'str' is a comma separated list of feature names. Parse it and 674// return the InstructionSetFeatures object. 675static InstructionSetFeatures ParseFeatureList(std::string str) { 676 InstructionSetFeatures result; 677 typedef std::vector<std::string> FeatureList; 678 FeatureList features; 679 Split(str, ',', features); 680 for (FeatureList::iterator i = features.begin(); i != features.end(); i++) { 681 std::string feature = Trim(*i); 682 if (feature == "default") { 683 // Nothing to do. 684 } else if (feature == "div") { 685 // Supports divide instruction. 686 result.SetHasDivideInstruction(true); 687 } else if (feature == "nodiv") { 688 // Turn off support for divide instruction. 689 result.SetHasDivideInstruction(false); 690 } else { 691 Usage("Unknown instruction set feature: '%s'", feature.c_str()); 692 } 693 } 694 // others... 695 return result; 696} 697 698static int dex2oat(int argc, char** argv) { 699 original_argc = argc; 700 original_argv = argv; 701 702 TimingLogger timings("compiler", false, false); 703 CumulativeLogger compiler_phases_timings("compilation times"); 704 705 InitLogging(argv); 706 707 // Skip over argv[0]. 708 argv++; 709 argc--; 710 711 if (argc == 0) { 712 Usage("No arguments specified"); 713 } 714 715 std::vector<const char*> dex_filenames; 716 std::vector<const char*> dex_locations; 717 int zip_fd = -1; 718 std::string zip_location; 719 std::string oat_filename; 720 std::string oat_symbols; 721 std::string oat_location; 722 int oat_fd = -1; 723 std::string bitcode_filename; 724 const char* image_classes_zip_filename = NULL; 725 const char* image_classes_filename = NULL; 726 std::string image_filename; 727 std::string boot_image_filename; 728 uintptr_t image_base = 0; 729 std::string android_root; 730 std::vector<const char*> runtime_args; 731 int thread_count = sysconf(_SC_NPROCESSORS_CONF); 732 Compiler::Kind compiler_kind = kUsePortableCompiler 733 ? Compiler::kPortable 734 : Compiler::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(Runtime::GetDefaultInstructionSetFeatures()); 745 746 InstructionSet instruction_set = kRuntimeISA; 747 748 // Profile file to use 749 std::string profile_file; 750 751 bool is_host = false; 752 bool dump_stats = false; 753 bool dump_timing = false; 754 bool dump_passes = false; 755 bool dump_slow_timing = kIsDebugBuild; 756 bool watch_dog_enabled = !kIsTargetBuild; 757 bool generate_gdb_information = kIsDebugBuild; 758 759 for (int i = 0; i < argc; i++) { 760 const StringPiece option(argv[i]); 761 bool log_options = false; 762 if (log_options) { 763 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 764 } 765 if (option.starts_with("--dex-file=")) { 766 dex_filenames.push_back(option.substr(strlen("--dex-file=")).data()); 767 } else if (option.starts_with("--dex-location=")) { 768 dex_locations.push_back(option.substr(strlen("--dex-location=")).data()); 769 } else if (option.starts_with("--zip-fd=")) { 770 const char* zip_fd_str = option.substr(strlen("--zip-fd=")).data(); 771 if (!ParseInt(zip_fd_str, &zip_fd)) { 772 Usage("Failed to parse --zip-fd argument '%s' as an integer", zip_fd_str); 773 } 774 if (zip_fd < 0) { 775 Usage("--zip-fd passed a negative value %d", zip_fd); 776 } 777 } else if (option.starts_with("--zip-location=")) { 778 zip_location = option.substr(strlen("--zip-location=")).data(); 779 } else if (option.starts_with("--oat-file=")) { 780 oat_filename = option.substr(strlen("--oat-file=")).data(); 781 } else if (option.starts_with("--oat-symbols=")) { 782 oat_symbols = option.substr(strlen("--oat-symbols=")).data(); 783 } else if (option.starts_with("--oat-fd=")) { 784 const char* oat_fd_str = option.substr(strlen("--oat-fd=")).data(); 785 if (!ParseInt(oat_fd_str, &oat_fd)) { 786 Usage("Failed to parse --oat-fd argument '%s' as an integer", oat_fd_str); 787 } 788 if (oat_fd < 0) { 789 Usage("--oat-fd passed a negative value %d", oat_fd); 790 } 791 } else if (option == "--watch-dog") { 792 watch_dog_enabled = true; 793 } else if (option == "--no-watch-dog") { 794 watch_dog_enabled = false; 795 } else if (option == "--gen-gdb-info") { 796 generate_gdb_information = true; 797 } else if (option == "--no-gen-gdb-info") { 798 generate_gdb_information = false; 799 } else if (option.starts_with("-j")) { 800 const char* thread_count_str = option.substr(strlen("-j")).data(); 801 if (!ParseInt(thread_count_str, &thread_count)) { 802 Usage("Failed to parse -j argument '%s' as an integer", thread_count_str); 803 } 804 } else if (option.starts_with("--oat-location=")) { 805 oat_location = option.substr(strlen("--oat-location=")).data(); 806 } else if (option.starts_with("--bitcode=")) { 807 bitcode_filename = option.substr(strlen("--bitcode=")).data(); 808 } else if (option.starts_with("--image=")) { 809 image_filename = option.substr(strlen("--image=")).data(); 810 } else if (option.starts_with("--image-classes=")) { 811 image_classes_filename = option.substr(strlen("--image-classes=")).data(); 812 } else if (option.starts_with("--image-classes-zip=")) { 813 image_classes_zip_filename = option.substr(strlen("--image-classes-zip=")).data(); 814 } else if (option.starts_with("--base=")) { 815 const char* image_base_str = option.substr(strlen("--base=")).data(); 816 char* end; 817 image_base = strtoul(image_base_str, &end, 16); 818 if (end == image_base_str || *end != '\0') { 819 Usage("Failed to parse hexadecimal value for option %s", option.data()); 820 } 821 } else if (option.starts_with("--boot-image=")) { 822 boot_image_filename = option.substr(strlen("--boot-image=")).data(); 823 } else if (option.starts_with("--android-root=")) { 824 android_root = option.substr(strlen("--android-root=")).data(); 825 } else if (option.starts_with("--instruction-set=")) { 826 StringPiece instruction_set_str = option.substr(strlen("--instruction-set=")).data(); 827 if (instruction_set_str == "arm") { 828 instruction_set = kThumb2; 829 } else if (instruction_set_str == "arm64") { 830 instruction_set = kArm64; 831 } else if (instruction_set_str == "mips") { 832 instruction_set = kMips; 833 } else if (instruction_set_str == "x86") { 834 instruction_set = kX86; 835 } else if (instruction_set_str == "x86_64") { 836 instruction_set = kX86_64; 837 } 838 } else if (option.starts_with("--instruction-set-features=")) { 839 StringPiece str = option.substr(strlen("--instruction-set-features=")).data(); 840 instruction_set_features = ParseFeatureList(str.as_string()); 841 } else if (option.starts_with("--compiler-backend=")) { 842 StringPiece backend_str = option.substr(strlen("--compiler-backend=")).data(); 843 if (backend_str == "Quick") { 844 compiler_kind = Compiler::kQuick; 845 } else if (backend_str == "Optimizing") { 846 compiler_kind = Compiler::kOptimizing; 847 } else if (backend_str == "Portable") { 848 compiler_kind = Compiler::kPortable; 849 } 850 } else if (option.starts_with("--compiler-filter=")) { 851 compiler_filter_string = option.substr(strlen("--compiler-filter=")).data(); 852 } else if (option.starts_with("--huge-method-max=")) { 853 const char* threshold = option.substr(strlen("--huge-method-max=")).data(); 854 if (!ParseInt(threshold, &huge_method_threshold)) { 855 Usage("Failed to parse --huge-method-max '%s' as an integer", threshold); 856 } 857 if (huge_method_threshold < 0) { 858 Usage("--huge-method-max passed a negative value %s", huge_method_threshold); 859 } 860 } else if (option.starts_with("--large-method-max=")) { 861 const char* threshold = option.substr(strlen("--large-method-max=")).data(); 862 if (!ParseInt(threshold, &large_method_threshold)) { 863 Usage("Failed to parse --large-method-max '%s' as an integer", threshold); 864 } 865 if (large_method_threshold < 0) { 866 Usage("--large-method-max passed a negative value %s", large_method_threshold); 867 } 868 } else if (option.starts_with("--small-method-max=")) { 869 const char* threshold = option.substr(strlen("--small-method-max=")).data(); 870 if (!ParseInt(threshold, &small_method_threshold)) { 871 Usage("Failed to parse --small-method-max '%s' as an integer", threshold); 872 } 873 if (small_method_threshold < 0) { 874 Usage("--small-method-max passed a negative value %s", small_method_threshold); 875 } 876 } else if (option.starts_with("--tiny-method-max=")) { 877 const char* threshold = option.substr(strlen("--tiny-method-max=")).data(); 878 if (!ParseInt(threshold, &tiny_method_threshold)) { 879 Usage("Failed to parse --tiny-method-max '%s' as an integer", threshold); 880 } 881 if (tiny_method_threshold < 0) { 882 Usage("--tiny-method-max passed a negative value %s", tiny_method_threshold); 883 } 884 } else if (option.starts_with("--num-dex-methods=")) { 885 const char* threshold = option.substr(strlen("--num-dex-methods=")).data(); 886 if (!ParseInt(threshold, &num_dex_methods_threshold)) { 887 Usage("Failed to parse --num-dex-methods '%s' as an integer", threshold); 888 } 889 if (num_dex_methods_threshold < 0) { 890 Usage("--num-dex-methods passed a negative value %s", num_dex_methods_threshold); 891 } 892 } else if (option == "--host") { 893 is_host = true; 894 } else if (option == "--runtime-arg") { 895 if (++i >= argc) { 896 Usage("Missing required argument for --runtime-arg"); 897 } 898 if (log_options) { 899 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 900 } 901 runtime_args.push_back(argv[i]); 902 } else if (option == "--dump-timing") { 903 dump_timing = true; 904 } else if (option == "--dump-passes") { 905 dump_passes = true; 906 } else if (option == "--dump-stats") { 907 dump_stats = true; 908 } else if (option.starts_with("--profile-file=")) { 909 profile_file = option.substr(strlen("--profile-file=")).data(); 910 VLOG(compiler) << "dex2oat: profile file is " << profile_file; 911 } else if (option == "--no-profile-file") { 912 // No profile 913 } else if (option == "--print-pass-names") { 914 PassDriver::PrintPassNames(); 915 } else if (option.starts_with("--disable-passes=")) { 916 std::string disable_passes = option.substr(strlen("--disable-passes=")).data(); 917 PassDriver::CreateDefaultPassList(disable_passes); 918 } else { 919 Usage("Unknown argument %s", option.data()); 920 } 921 } 922 923 if (oat_filename.empty() && oat_fd == -1) { 924 Usage("Output must be supplied with either --oat-file or --oat-fd"); 925 } 926 927 if (!oat_filename.empty() && oat_fd != -1) { 928 Usage("--oat-file should not be used with --oat-fd"); 929 } 930 931 if (!oat_symbols.empty() && oat_fd != -1) { 932 Usage("--oat-symbols should not be used with --oat-fd"); 933 } 934 935 if (!oat_symbols.empty() && is_host) { 936 Usage("--oat-symbols should not be used with --host"); 937 } 938 939 if (oat_fd != -1 && !image_filename.empty()) { 940 Usage("--oat-fd should not be used with --image"); 941 } 942 943 if (android_root.empty()) { 944 const char* android_root_env_var = getenv("ANDROID_ROOT"); 945 if (android_root_env_var == NULL) { 946 Usage("--android-root unspecified and ANDROID_ROOT not set"); 947 } 948 android_root += android_root_env_var; 949 } 950 951 bool image = (!image_filename.empty()); 952 if (!image && boot_image_filename.empty()) { 953 boot_image_filename += GetAndroidRoot(); 954 boot_image_filename += "/framework/boot.art"; 955 } 956 std::string boot_image_option; 957 if (!boot_image_filename.empty()) { 958 boot_image_option += "-Ximage:"; 959 boot_image_option += boot_image_filename; 960 } 961 962 if (image_classes_filename != NULL && !image) { 963 Usage("--image-classes should only be used with --image"); 964 } 965 966 if (image_classes_filename != NULL && !boot_image_option.empty()) { 967 Usage("--image-classes should not be used with --boot-image"); 968 } 969 970 if (image_classes_zip_filename != NULL && image_classes_filename == NULL) { 971 Usage("--image-classes-zip should be used with --image-classes"); 972 } 973 974 if (dex_filenames.empty() && zip_fd == -1) { 975 Usage("Input must be supplied with either --dex-file or --zip-fd"); 976 } 977 978 if (!dex_filenames.empty() && zip_fd != -1) { 979 Usage("--dex-file should not be used with --zip-fd"); 980 } 981 982 if (!dex_filenames.empty() && !zip_location.empty()) { 983 Usage("--dex-file should not be used with --zip-location"); 984 } 985 986 if (dex_locations.empty()) { 987 for (size_t i = 0; i < dex_filenames.size(); i++) { 988 dex_locations.push_back(dex_filenames[i]); 989 } 990 } else if (dex_locations.size() != dex_filenames.size()) { 991 Usage("--dex-location arguments do not match --dex-file arguments"); 992 } 993 994 if (zip_fd != -1 && zip_location.empty()) { 995 Usage("--zip-location should be supplied with --zip-fd"); 996 } 997 998 if (boot_image_option.empty()) { 999 if (image_base == 0) { 1000 Usage("Non-zero --base not specified"); 1001 } 1002 } 1003 1004 std::string oat_stripped(oat_filename); 1005 std::string oat_unstripped; 1006 if (!oat_symbols.empty()) { 1007 oat_unstripped += oat_symbols; 1008 } else { 1009 oat_unstripped += oat_filename; 1010 } 1011 1012 if (compiler_filter_string == NULL) { 1013 if (instruction_set == kX86_64 || instruction_set == kMips) { 1014 // TODO: implement/fix compilers for these architectures. 1015 compiler_filter_string = "interpret-only"; 1016 } else if (image) { 1017 compiler_filter_string = "speed"; 1018 } else { 1019#if ART_SMALL_MODE 1020 compiler_filter_string = "interpret-only"; 1021#else 1022 compiler_filter_string = "speed"; 1023#endif 1024 } 1025 } 1026 CHECK(compiler_filter_string != nullptr); 1027 CompilerOptions::CompilerFilter compiler_filter = CompilerOptions::kDefaultCompilerFilter; 1028 if (strcmp(compiler_filter_string, "verify-none") == 0) { 1029 compiler_filter = CompilerOptions::kVerifyNone; 1030 } else if (strcmp(compiler_filter_string, "interpret-only") == 0) { 1031 compiler_filter = CompilerOptions::kInterpretOnly; 1032 } else if (strcmp(compiler_filter_string, "space") == 0) { 1033 compiler_filter = CompilerOptions::kSpace; 1034 } else if (strcmp(compiler_filter_string, "balanced") == 0) { 1035 compiler_filter = CompilerOptions::kBalanced; 1036 } else if (strcmp(compiler_filter_string, "speed") == 0) { 1037 compiler_filter = CompilerOptions::kSpeed; 1038 } else if (strcmp(compiler_filter_string, "everything") == 0) { 1039 compiler_filter = CompilerOptions::kEverything; 1040 } else { 1041 Usage("Unknown --compiler-filter value %s", compiler_filter_string); 1042 } 1043 1044 CompilerOptions compiler_options(compiler_filter, 1045 huge_method_threshold, 1046 large_method_threshold, 1047 small_method_threshold, 1048 tiny_method_threshold, 1049 num_dex_methods_threshold, 1050 generate_gdb_information 1051#ifdef ART_SEA_IR_MODE 1052 , compiler_options.sea_ir_ = true; 1053#endif 1054 ); // NOLINT(whitespace/parens) 1055 1056 // Done with usage checks, enable watchdog if requested 1057 WatchDog watch_dog(watch_dog_enabled); 1058 1059 // Check early that the result of compilation can be written 1060 UniquePtr<File> oat_file; 1061 bool create_file = !oat_unstripped.empty(); // as opposed to using open file descriptor 1062 if (create_file) { 1063 oat_file.reset(OS::CreateEmptyFile(oat_unstripped.c_str())); 1064 if (oat_location.empty()) { 1065 oat_location = oat_filename; 1066 } 1067 } else { 1068 oat_file.reset(new File(oat_fd, oat_location)); 1069 oat_file->DisableAutoClose(); 1070 } 1071 if (oat_file.get() == NULL) { 1072 PLOG(ERROR) << "Failed to create oat file: " << oat_location; 1073 return EXIT_FAILURE; 1074 } 1075 if (create_file && fchmod(oat_file->Fd(), 0644) != 0) { 1076 PLOG(ERROR) << "Failed to make oat file world readable: " << oat_location; 1077 return EXIT_FAILURE; 1078 } 1079 1080 timings.StartSplit("dex2oat Setup"); 1081 LOG(INFO) << CommandLine(); 1082 1083 Runtime::Options runtime_options; 1084 std::vector<const DexFile*> boot_class_path; 1085 if (boot_image_option.empty()) { 1086 size_t failure_count = OpenDexFiles(dex_filenames, dex_locations, boot_class_path); 1087 if (failure_count > 0) { 1088 LOG(ERROR) << "Failed to open some dex files: " << failure_count; 1089 return EXIT_FAILURE; 1090 } 1091 runtime_options.push_back(std::make_pair("bootclasspath", &boot_class_path)); 1092 } else { 1093 runtime_options.push_back(std::make_pair(boot_image_option.c_str(), 1094 reinterpret_cast<void*>(NULL))); 1095 } 1096 for (size_t i = 0; i < runtime_args.size(); i++) { 1097 runtime_options.push_back(std::make_pair(runtime_args[i], reinterpret_cast<void*>(NULL))); 1098 } 1099 1100 VerificationResults verification_results(&compiler_options); 1101 DexFileToMethodInlinerMap method_inliner_map; 1102 CompilerCallbacksImpl callbacks(&verification_results, &method_inliner_map); 1103 runtime_options.push_back(std::make_pair("compilercallbacks", &callbacks)); 1104 runtime_options.push_back( 1105 std::make_pair("imageinstructionset", 1106 reinterpret_cast<const void*>(GetInstructionSetString(instruction_set)))); 1107 1108 Dex2Oat* p_dex2oat; 1109 if (!Dex2Oat::Create(&p_dex2oat, 1110 runtime_options, 1111 compiler_options, 1112 compiler_kind, 1113 instruction_set, 1114 instruction_set_features, 1115 &verification_results, 1116 &method_inliner_map, 1117 thread_count)) { 1118 LOG(ERROR) << "Failed to create dex2oat"; 1119 return EXIT_FAILURE; 1120 } 1121 UniquePtr<Dex2Oat> dex2oat(p_dex2oat); 1122 // Runtime::Create acquired the mutator_lock_ that is normally given away when we Runtime::Start, 1123 // give it away now so that we don't starve GC. 1124 Thread* self = Thread::Current(); 1125 self->TransitionFromRunnableToSuspended(kNative); 1126 // If we're doing the image, override the compiler filter to force full compilation. Must be 1127 // done ahead of WellKnownClasses::Init that causes verification. Note: doesn't force 1128 // compilation of class initializers. 1129 // Whilst we're in native take the opportunity to initialize well known classes. 1130 WellKnownClasses::Init(self->GetJniEnv()); 1131 1132 // If --image-classes was specified, calculate the full list of classes to include in the image 1133 UniquePtr<CompilerDriver::DescriptorSet> image_classes(NULL); 1134 if (image_classes_filename != NULL) { 1135 std::string error_msg; 1136 if (image_classes_zip_filename != NULL) { 1137 image_classes.reset(dex2oat->ReadImageClassesFromZip(image_classes_zip_filename, 1138 image_classes_filename, 1139 &error_msg)); 1140 } else { 1141 image_classes.reset(dex2oat->ReadImageClassesFromFile(image_classes_filename)); 1142 } 1143 if (image_classes.get() == NULL) { 1144 LOG(ERROR) << "Failed to create list of image classes from '" << image_classes_filename << 1145 "': " << error_msg; 1146 return EXIT_FAILURE; 1147 } 1148 } 1149 1150 std::vector<const DexFile*> dex_files; 1151 if (boot_image_option.empty()) { 1152 dex_files = Runtime::Current()->GetClassLinker()->GetBootClassPath(); 1153 } else { 1154 if (dex_filenames.empty()) { 1155 ATRACE_BEGIN("Opening zip archive from file descriptor"); 1156 std::string error_msg; 1157 UniquePtr<ZipArchive> zip_archive(ZipArchive::OpenFromFd(zip_fd, zip_location.c_str(), 1158 &error_msg)); 1159 if (zip_archive.get() == NULL) { 1160 LOG(ERROR) << "Failed to open zip from file descriptor for '" << zip_location << "': " 1161 << error_msg; 1162 return EXIT_FAILURE; 1163 } 1164 const DexFile* dex_file = DexFile::Open(*zip_archive.get(), zip_location, &error_msg); 1165 if (dex_file == NULL) { 1166 LOG(ERROR) << "Failed to open dex from file descriptor for zip file '" << zip_location 1167 << "': " << error_msg; 1168 return EXIT_FAILURE; 1169 } 1170 dex_files.push_back(dex_file); 1171 ATRACE_END(); 1172 } else { 1173 size_t failure_count = OpenDexFiles(dex_filenames, dex_locations, dex_files); 1174 if (failure_count > 0) { 1175 LOG(ERROR) << "Failed to open some dex files: " << failure_count; 1176 return EXIT_FAILURE; 1177 } 1178 } 1179 1180 const bool kSaveDexInput = false; 1181 if (kSaveDexInput) { 1182 for (size_t i = 0; i < dex_files.size(); ++i) { 1183 const DexFile* dex_file = dex_files[i]; 1184 std::string tmp_file_name(StringPrintf("/data/local/tmp/dex2oat.%d.%zd.dex", getpid(), i)); 1185 UniquePtr<File> tmp_file(OS::CreateEmptyFile(tmp_file_name.c_str())); 1186 if (tmp_file.get() == nullptr) { 1187 PLOG(ERROR) << "Failed to open file " << tmp_file_name 1188 << ". Try: adb shell chmod 777 /data/local/tmp"; 1189 continue; 1190 } 1191 tmp_file->WriteFully(dex_file->Begin(), dex_file->Size()); 1192 LOG(INFO) << "Wrote input to " << tmp_file_name; 1193 } 1194 } 1195 } 1196 // Ensure opened dex files are writable for dex-to-dex transformations. 1197 for (const auto& dex_file : dex_files) { 1198 if (!dex_file->EnableWrite()) { 1199 PLOG(ERROR) << "Failed to make .dex file writeable '" << dex_file->GetLocation() << "'\n"; 1200 } 1201 } 1202 1203 /* 1204 * If we're not in interpret-only or verify-none mode, go ahead and compile small applications. 1205 * Don't bother to check if we're doing the image. 1206 */ 1207 if (!image && compiler_options.IsCompilationEnabled()) { 1208 size_t num_methods = 0; 1209 for (size_t i = 0; i != dex_files.size(); ++i) { 1210 const DexFile* dex_file = dex_files[i]; 1211 CHECK(dex_file != NULL); 1212 num_methods += dex_file->NumMethodIds(); 1213 } 1214 if (num_methods <= compiler_options.GetNumDexMethodsThreshold()) { 1215 compiler_options.SetCompilerFilter(CompilerOptions::kSpeed); 1216 VLOG(compiler) << "Below method threshold, compiling anyways"; 1217 } 1218 } 1219 1220 UniquePtr<const CompilerDriver> compiler(dex2oat->CreateOatFile(boot_image_option, 1221 android_root, 1222 is_host, 1223 dex_files, 1224 oat_file.get(), 1225 bitcode_filename, 1226 image, 1227 image_classes, 1228 dump_stats, 1229 dump_passes, 1230 timings, 1231 compiler_phases_timings, 1232 profile_file)); 1233 1234 if (compiler.get() == NULL) { 1235 LOG(ERROR) << "Failed to create oat file: " << oat_location; 1236 return EXIT_FAILURE; 1237 } 1238 1239 VLOG(compiler) << "Oat file written successfully (unstripped): " << oat_location; 1240 1241 // Notes on the interleaving of creating the image and oat file to 1242 // ensure the references between the two are correct. 1243 // 1244 // Currently we have a memory layout that looks something like this: 1245 // 1246 // +--------------+ 1247 // | image | 1248 // +--------------+ 1249 // | boot oat | 1250 // +--------------+ 1251 // | alloc spaces | 1252 // +--------------+ 1253 // 1254 // There are several constraints on the loading of the image and boot.oat. 1255 // 1256 // 1. The image is expected to be loaded at an absolute address and 1257 // contains Objects with absolute pointers within the image. 1258 // 1259 // 2. There are absolute pointers from Methods in the image to their 1260 // code in the oat. 1261 // 1262 // 3. There are absolute pointers from the code in the oat to Methods 1263 // in the image. 1264 // 1265 // 4. There are absolute pointers from code in the oat to other code 1266 // in the oat. 1267 // 1268 // To get this all correct, we go through several steps. 1269 // 1270 // 1. We have already created that oat file above with 1271 // CreateOatFile. Originally this was just our own proprietary file 1272 // but now it is contained within an ELF dynamic object (aka an .so 1273 // file). The Compiler returned by CreateOatFile provides 1274 // PatchInformation for references to oat code and Methods that need 1275 // to be update once we know where the oat file will be located 1276 // after the image. 1277 // 1278 // 2. We create the image file. It needs to know where the oat file 1279 // will be loaded after itself. Originally when oat file was simply 1280 // memory mapped so we could predict where its contents were based 1281 // on the file size. Now that it is an ELF file, we need to inspect 1282 // the ELF file to understand the in memory segment layout including 1283 // where the oat header is located within. ImageWriter's 1284 // PatchOatCodeAndMethods uses the PatchInformation from the 1285 // Compiler to touch up absolute references in the oat file. 1286 // 1287 // 3. We fixup the ELF program headers so that dlopen will try to 1288 // load the .so at the desired location at runtime by offsetting the 1289 // Elf32_Phdr.p_vaddr values by the desired base address. 1290 // 1291 if (image) { 1292 timings.NewSplit("dex2oat ImageWriter"); 1293 bool image_creation_success = dex2oat->CreateImageFile(image_filename, 1294 image_base, 1295 oat_unstripped, 1296 oat_location, 1297 *compiler.get()); 1298 if (!image_creation_success) { 1299 return EXIT_FAILURE; 1300 } 1301 VLOG(compiler) << "Image written successfully: " << image_filename; 1302 } 1303 1304 if (is_host) { 1305 if (dump_timing || (dump_slow_timing && timings.GetTotalNs() > MsToNs(1000))) { 1306 LOG(INFO) << Dumpable<TimingLogger>(timings); 1307 } 1308 if (dump_passes) { 1309 LOG(INFO) << Dumpable<CumulativeLogger>(*compiler.get()->GetTimingsLogger()); 1310 } 1311 return EXIT_SUCCESS; 1312 } 1313 1314 // If we don't want to strip in place, copy from unstripped location to stripped location. 1315 // We need to strip after image creation because FixupElf needs to use .strtab. 1316 if (oat_unstripped != oat_stripped) { 1317 timings.NewSplit("dex2oat OatFile copy"); 1318 oat_file.reset(); 1319 UniquePtr<File> in(OS::OpenFileForReading(oat_unstripped.c_str())); 1320 UniquePtr<File> out(OS::CreateEmptyFile(oat_stripped.c_str())); 1321 size_t buffer_size = 8192; 1322 UniquePtr<uint8_t> buffer(new uint8_t[buffer_size]); 1323 while (true) { 1324 int bytes_read = TEMP_FAILURE_RETRY(read(in->Fd(), buffer.get(), buffer_size)); 1325 if (bytes_read <= 0) { 1326 break; 1327 } 1328 bool write_ok = out->WriteFully(buffer.get(), bytes_read); 1329 CHECK(write_ok); 1330 } 1331 oat_file.reset(out.release()); 1332 VLOG(compiler) << "Oat file copied successfully (stripped): " << oat_stripped; 1333 } 1334 1335#if ART_USE_PORTABLE_COMPILER // We currently only generate symbols on Portable 1336 timings.NewSplit("dex2oat ElfStripper"); 1337 // Strip unneeded sections for target 1338 off_t seek_actual = lseek(oat_file->Fd(), 0, SEEK_SET); 1339 CHECK_EQ(0, seek_actual); 1340 std::string error_msg; 1341 CHECK(ElfStripper::Strip(oat_file.get(), &error_msg)) << error_msg; 1342 1343 1344 // We wrote the oat file successfully, and want to keep it. 1345 VLOG(compiler) << "Oat file written successfully (stripped): " << oat_location; 1346#endif // ART_USE_PORTABLE_COMPILER 1347 1348 timings.EndSplit(); 1349 1350 if (dump_timing || (dump_slow_timing && timings.GetTotalNs() > MsToNs(1000))) { 1351 LOG(INFO) << Dumpable<TimingLogger>(timings); 1352 } 1353 if (dump_passes) { 1354 LOG(INFO) << Dumpable<CumulativeLogger>(compiler_phases_timings); 1355 } 1356 1357 // Everything was successfully written, do an explicit exit here to avoid running Runtime 1358 // destructors that take time (bug 10645725) unless we're a debug build or running on valgrind. 1359 if (!kIsDebugBuild && (RUNNING_ON_VALGRIND == 0)) { 1360 dex2oat->LogCompletionTime(); 1361 exit(EXIT_SUCCESS); 1362 } 1363 1364 return EXIT_SUCCESS; 1365} // NOLINT(readability/fn_size) 1366} // namespace art 1367 1368int main(int argc, char** argv) { 1369 return art::dex2oat(argc, argv); 1370} 1371