dex2oat.cc revision f9487c039efb4112616d438593a2ab02792e0304
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-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: $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|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>: profile file from a previous run used to determine"); 207 UsageError(" whether to compile methods or not."); 208 UsageError(""); 209 UsageError(" --no-profile-file: don't use a profile file for compilation."); 210 UsageError(""); 211 UsageError(" --no-helper-trampolines: don't use trampolines for calls to ARM helper functions."); 212 UsageError(""); 213 UsageError(" --print-pass-names: print a list of pass names"); 214 UsageError(""); 215 UsageError(" --disable-passes=<pass-names>: disable one or more passes separated by comma."); 216 UsageError(" Example: --disable-passes=UseCount,BBOptimizations"); 217 UsageError(""); 218 std::cerr << "See log for usage error information\n"; 219 exit(EXIT_FAILURE); 220} 221 222class Dex2Oat { 223 public: 224 static bool Create(Dex2Oat** p_dex2oat, 225 const Runtime::Options& runtime_options, 226 const CompilerOptions& compiler_options, 227 Compiler::Kind compiler_kind, 228 InstructionSet instruction_set, 229 InstructionSetFeatures instruction_set_features, 230 VerificationResults* verification_results, 231 DexFileToMethodInlinerMap* method_inliner_map, 232 size_t thread_count) 233 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_) { 234 CHECK(verification_results != nullptr); 235 CHECK(method_inliner_map != nullptr); 236 UniquePtr<Dex2Oat> dex2oat(new Dex2Oat(&compiler_options, 237 compiler_kind, 238 instruction_set, 239 instruction_set_features, 240 verification_results, 241 method_inliner_map, 242 thread_count)); 243 if (!dex2oat->CreateRuntime(runtime_options, instruction_set)) { 244 *p_dex2oat = NULL; 245 return false; 246 } 247 *p_dex2oat = dex2oat.release(); 248 return true; 249 } 250 251 ~Dex2Oat() { 252 delete runtime_; 253 LogCompletionTime(); 254 } 255 256 void LogCompletionTime() { 257 LOG(INFO) << "dex2oat took " << PrettyDuration(NanoTime() - start_ns_) 258 << " (threads: " << thread_count_ << ")"; 259 } 260 261 262 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 263 CompilerDriver::DescriptorSet* ReadImageClassesFromFile(const char* image_classes_filename) { 264 UniquePtr<std::ifstream> image_classes_file(new std::ifstream(image_classes_filename, 265 std::ifstream::in)); 266 if (image_classes_file.get() == NULL) { 267 LOG(ERROR) << "Failed to open image classes file " << image_classes_filename; 268 return NULL; 269 } 270 UniquePtr<CompilerDriver::DescriptorSet> result(ReadImageClasses(*image_classes_file.get())); 271 image_classes_file->close(); 272 return result.release(); 273 } 274 275 CompilerDriver::DescriptorSet* ReadImageClasses(std::istream& image_classes_stream) { 276 UniquePtr<CompilerDriver::DescriptorSet> image_classes(new CompilerDriver::DescriptorSet); 277 while (image_classes_stream.good()) { 278 std::string dot; 279 std::getline(image_classes_stream, dot); 280 if (StartsWith(dot, "#") || dot.empty()) { 281 continue; 282 } 283 std::string descriptor(DotToDescriptor(dot.c_str())); 284 image_classes->insert(descriptor); 285 } 286 return image_classes.release(); 287 } 288 289 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 290 CompilerDriver::DescriptorSet* ReadImageClassesFromZip(const char* zip_filename, 291 const char* image_classes_filename, 292 std::string* error_msg) { 293 UniquePtr<ZipArchive> zip_archive(ZipArchive::Open(zip_filename, error_msg)); 294 if (zip_archive.get() == NULL) { 295 return NULL; 296 } 297 UniquePtr<ZipEntry> zip_entry(zip_archive->Find(image_classes_filename, error_msg)); 298 if (zip_entry.get() == NULL) { 299 *error_msg = StringPrintf("Failed to find '%s' within '%s': %s", image_classes_filename, 300 zip_filename, error_msg->c_str()); 301 return NULL; 302 } 303 UniquePtr<MemMap> image_classes_file(zip_entry->ExtractToMemMap(image_classes_filename, 304 error_msg)); 305 if (image_classes_file.get() == NULL) { 306 *error_msg = StringPrintf("Failed to extract '%s' from '%s': %s", image_classes_filename, 307 zip_filename, error_msg->c_str()); 308 return NULL; 309 } 310 const std::string image_classes_string(reinterpret_cast<char*>(image_classes_file->Begin()), 311 image_classes_file->Size()); 312 std::istringstream image_classes_stream(image_classes_string); 313 return ReadImageClasses(image_classes_stream); 314 } 315 316 const CompilerDriver* CreateOatFile(const std::string& boot_image_option, 317 const std::string& android_root, 318 bool is_host, 319 const std::vector<const DexFile*>& dex_files, 320 File* oat_file, 321 const std::string& bitcode_filename, 322 bool image, 323 UniquePtr<CompilerDriver::DescriptorSet>& image_classes, 324 bool dump_stats, 325 bool dump_passes, 326 TimingLogger& timings, 327 CumulativeLogger& compiler_phases_timings, 328 std::string profile_file) { 329 // SirtRef and ClassLoader creation needs to come after Runtime::Create 330 jobject class_loader = NULL; 331 Thread* self = Thread::Current(); 332 if (!boot_image_option.empty()) { 333 ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 334 std::vector<const DexFile*> class_path_files(dex_files); 335 OpenClassPathFiles(runtime_->GetClassPathString(), class_path_files); 336 ScopedObjectAccess soa(self); 337 for (size_t i = 0; i < class_path_files.size(); i++) { 338 class_linker->RegisterDexFile(*class_path_files[i]); 339 } 340 soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader); 341 ScopedLocalRef<jobject> class_loader_local(soa.Env(), 342 soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader)); 343 class_loader = soa.Env()->NewGlobalRef(class_loader_local.get()); 344 Runtime::Current()->SetCompileTimeClassPath(class_loader, class_path_files); 345 } 346 347 UniquePtr<CompilerDriver> driver(new CompilerDriver(compiler_options_, 348 verification_results_, 349 method_inliner_map_, 350 compiler_kind_, 351 instruction_set_, 352 instruction_set_features_, 353 image, 354 image_classes.release(), 355 thread_count_, 356 dump_stats, 357 dump_passes, 358 &compiler_phases_timings, 359 profile_file)); 360 361 driver->GetCompiler()->SetBitcodeFileName(*driver.get(), bitcode_filename); 362 363 driver->CompileAll(class_loader, dex_files, &timings); 364 365 timings.NewSplit("dex2oat OatWriter"); 366 std::string image_file_location; 367 uint32_t image_file_location_oat_checksum = 0; 368 uintptr_t image_file_location_oat_data_begin = 0; 369 if (!driver->IsImage()) { 370 TimingLogger::ScopedSplit split("Loading image checksum", &timings); 371 gc::space::ImageSpace* image_space = Runtime::Current()->GetHeap()->GetImageSpace(); 372 image_file_location_oat_checksum = image_space->GetImageHeader().GetOatChecksum(); 373 image_file_location_oat_data_begin = 374 reinterpret_cast<uintptr_t>(image_space->GetImageHeader().GetOatDataBegin()); 375 image_file_location = image_space->GetImageFilename(); 376 } 377 378 OatWriter oat_writer(dex_files, 379 image_file_location_oat_checksum, 380 image_file_location_oat_data_begin, 381 image_file_location, 382 driver.get(), 383 &timings); 384 385 TimingLogger::ScopedSplit split("Writing ELF", &timings); 386 if (!driver->WriteElf(android_root, is_host, dex_files, &oat_writer, oat_file)) { 387 LOG(ERROR) << "Failed to write ELF file " << oat_file->GetPath(); 388 return NULL; 389 } 390 391 return driver.release(); 392 } 393 394 bool CreateImageFile(const std::string& image_filename, 395 uintptr_t image_base, 396 const std::string& oat_filename, 397 const std::string& oat_location, 398 const CompilerDriver& compiler) 399 LOCKS_EXCLUDED(Locks::mutator_lock_) { 400 uintptr_t oat_data_begin; 401 { 402 // ImageWriter is scoped so it can free memory before doing FixupElf 403 ImageWriter image_writer(compiler); 404 if (!image_writer.Write(image_filename, image_base, oat_filename, oat_location)) { 405 LOG(ERROR) << "Failed to create image file " << image_filename; 406 return false; 407 } 408 oat_data_begin = image_writer.GetOatDataBegin(); 409 } 410 411 UniquePtr<File> oat_file(OS::OpenFileReadWrite(oat_filename.c_str())); 412 if (oat_file.get() == NULL) { 413 PLOG(ERROR) << "Failed to open ELF file: " << oat_filename; 414 return false; 415 } 416 if (!ElfFixup::Fixup(oat_file.get(), oat_data_begin)) { 417 LOG(ERROR) << "Failed to fixup ELF file " << oat_file->GetPath(); 418 return false; 419 } 420 return true; 421 } 422 423 private: 424 explicit Dex2Oat(const CompilerOptions* compiler_options, 425 Compiler::Kind compiler_kind, 426 InstructionSet instruction_set, 427 InstructionSetFeatures instruction_set_features, 428 VerificationResults* verification_results, 429 DexFileToMethodInlinerMap* method_inliner_map, 430 size_t thread_count) 431 : compiler_options_(compiler_options), 432 compiler_kind_(compiler_kind), 433 instruction_set_(instruction_set), 434 instruction_set_features_(instruction_set_features), 435 verification_results_(verification_results), 436 method_inliner_map_(method_inliner_map), 437 runtime_(nullptr), 438 thread_count_(thread_count), 439 start_ns_(NanoTime()) { 440 CHECK(compiler_options != nullptr); 441 CHECK(verification_results != nullptr); 442 CHECK(method_inliner_map != nullptr); 443 } 444 445 bool CreateRuntime(const Runtime::Options& runtime_options, InstructionSet instruction_set) 446 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_) { 447 if (!Runtime::Create(runtime_options, false)) { 448 LOG(ERROR) << "Failed to create runtime"; 449 return false; 450 } 451 Runtime* runtime = Runtime::Current(); 452 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 453 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 454 if (!runtime->HasCalleeSaveMethod(type)) { 455 runtime->SetCalleeSaveMethod(runtime->CreateCalleeSaveMethod(instruction_set, type), type); 456 } 457 } 458 runtime->GetClassLinker()->FixupDexCaches(runtime->GetResolutionMethod()); 459 runtime_ = runtime; 460 return true; 461 } 462 463 // Appends to dex_files any elements of class_path that it doesn't already 464 // contain. This will open those dex files as necessary. 465 static void OpenClassPathFiles(const std::string& class_path, 466 std::vector<const DexFile*>& dex_files) { 467 std::vector<std::string> parsed; 468 Split(class_path, ':', parsed); 469 // Take Locks::mutator_lock_ so that lock ordering on the ClassLinker::dex_lock_ is maintained. 470 ScopedObjectAccess soa(Thread::Current()); 471 for (size_t i = 0; i < parsed.size(); ++i) { 472 if (DexFilesContains(dex_files, parsed[i])) { 473 continue; 474 } 475 std::string error_msg; 476 const DexFile* dex_file = DexFile::Open(parsed[i].c_str(), parsed[i].c_str(), &error_msg); 477 if (dex_file == NULL) { 478 LOG(WARNING) << "Failed to open dex file '" << parsed[i] << "': " << error_msg; 479 } else { 480 dex_files.push_back(dex_file); 481 } 482 } 483 } 484 485 // Returns true if dex_files has a dex with the named location. 486 static bool DexFilesContains(const std::vector<const DexFile*>& dex_files, 487 const std::string& location) { 488 for (size_t i = 0; i < dex_files.size(); ++i) { 489 if (dex_files[i]->GetLocation() == location) { 490 return true; 491 } 492 } 493 return false; 494 } 495 496 const CompilerOptions* const compiler_options_; 497 const Compiler::Kind compiler_kind_; 498 499 const InstructionSet instruction_set_; 500 const InstructionSetFeatures instruction_set_features_; 501 502 VerificationResults* const verification_results_; 503 DexFileToMethodInlinerMap* const method_inliner_map_; 504 Runtime* runtime_; 505 size_t thread_count_; 506 uint64_t start_ns_; 507 508 DISALLOW_IMPLICIT_CONSTRUCTORS(Dex2Oat); 509}; 510 511static bool ParseInt(const char* in, int* out) { 512 char* end; 513 int result = strtol(in, &end, 10); 514 if (in == end || *end != '\0') { 515 return false; 516 } 517 *out = result; 518 return true; 519} 520 521static size_t OpenDexFiles(const std::vector<const char*>& dex_filenames, 522 const std::vector<const char*>& dex_locations, 523 std::vector<const DexFile*>& dex_files) { 524 size_t failure_count = 0; 525 for (size_t i = 0; i < dex_filenames.size(); i++) { 526 const char* dex_filename = dex_filenames[i]; 527 const char* dex_location = dex_locations[i]; 528 ATRACE_BEGIN(StringPrintf("Opening dex file '%s'", dex_filenames[i]).c_str()); 529 std::string error_msg; 530 if (!OS::FileExists(dex_filename)) { 531 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 532 continue; 533 } 534 const DexFile* dex_file = DexFile::Open(dex_filename, dex_location, &error_msg); 535 if (dex_file == NULL) { 536 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 537 ++failure_count; 538 } else { 539 dex_files.push_back(dex_file); 540 } 541 ATRACE_END(); 542 } 543 return failure_count; 544} 545 546// The primary goal of the watchdog is to prevent stuck build servers 547// during development when fatal aborts lead to a cascade of failures 548// that result in a deadlock. 549class WatchDog { 550// WatchDog defines its own CHECK_PTHREAD_CALL to avoid using Log which uses locks 551#undef CHECK_PTHREAD_CALL 552#define CHECK_WATCH_DOG_PTHREAD_CALL(call, args, what) \ 553 do { \ 554 int rc = call args; \ 555 if (rc != 0) { \ 556 errno = rc; \ 557 std::string message(# call); \ 558 message += " failed for "; \ 559 message += reason; \ 560 Fatal(message); \ 561 } \ 562 } while (false) 563 564 public: 565 explicit WatchDog(bool is_watch_dog_enabled) { 566 is_watch_dog_enabled_ = is_watch_dog_enabled; 567 if (!is_watch_dog_enabled_) { 568 return; 569 } 570 shutting_down_ = false; 571 const char* reason = "dex2oat watch dog thread startup"; 572 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_init, (&mutex_, NULL), reason); 573 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_init, (&cond_, NULL), reason); 574 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_init, (&attr_), reason); 575 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_create, (&pthread_, &attr_, &CallBack, this), reason); 576 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_destroy, (&attr_), reason); 577 } 578 ~WatchDog() { 579 if (!is_watch_dog_enabled_) { 580 return; 581 } 582 const char* reason = "dex2oat watch dog thread shutdown"; 583 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 584 shutting_down_ = true; 585 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_signal, (&cond_), reason); 586 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 587 588 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_join, (pthread_, NULL), reason); 589 590 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_destroy, (&cond_), reason); 591 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_destroy, (&mutex_), reason); 592 } 593 594 private: 595 static void* CallBack(void* arg) { 596 WatchDog* self = reinterpret_cast<WatchDog*>(arg); 597 ::art::SetThreadName("dex2oat watch dog"); 598 self->Wait(); 599 return NULL; 600 } 601 602 static void Message(char severity, const std::string& message) { 603 // TODO: Remove when we switch to LOG when we can guarantee it won't prevent shutdown in error 604 // cases. 605 fprintf(stderr, "dex2oat%s %c %d %d %s\n", 606 kIsDebugBuild ? "d" : "", 607 severity, 608 getpid(), 609 GetTid(), 610 message.c_str()); 611 } 612 613 static void Warn(const std::string& message) { 614 Message('W', message); 615 } 616 617 static void Fatal(const std::string& message) { 618 Message('F', message); 619 exit(1); 620 } 621 622 void Wait() { 623 bool warning = true; 624 CHECK_GT(kWatchDogTimeoutSeconds, kWatchDogWarningSeconds); 625 // TODO: tune the multiplier for GC verification, the following is just to make the timeout 626 // large. 627 int64_t multiplier = kVerifyObjectSupport > kVerifyObjectModeFast ? 100 : 1; 628 timespec warning_ts; 629 InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogWarningSeconds * 1000, 0, &warning_ts); 630 timespec timeout_ts; 631 InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogTimeoutSeconds * 1000, 0, &timeout_ts); 632 const char* reason = "dex2oat watch dog thread waiting"; 633 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 634 while (!shutting_down_) { 635 int rc = TEMP_FAILURE_RETRY(pthread_cond_timedwait(&cond_, &mutex_, 636 warning ? &warning_ts 637 : &timeout_ts)); 638 if (rc == ETIMEDOUT) { 639 std::string message(StringPrintf("dex2oat did not finish after %d seconds", 640 warning ? kWatchDogWarningSeconds 641 : kWatchDogTimeoutSeconds)); 642 if (warning) { 643 Warn(message.c_str()); 644 warning = false; 645 } else { 646 Fatal(message.c_str()); 647 } 648 } else if (rc != 0) { 649 std::string message(StringPrintf("pthread_cond_timedwait failed: %s", 650 strerror(errno))); 651 Fatal(message.c_str()); 652 } 653 } 654 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 655 } 656 657 // When setting timeouts, keep in mind that the build server may not be as fast as your desktop. 658#if ART_USE_PORTABLE_COMPILER 659 static const unsigned int kWatchDogWarningSeconds = 2 * 60; // 2 minutes. 660 static const unsigned int kWatchDogTimeoutSeconds = 30 * 60; // 25 minutes + buffer. 661#else 662 static const unsigned int kWatchDogWarningSeconds = 1 * 60; // 1 minute. 663 static const unsigned int kWatchDogTimeoutSeconds = 6 * 60; // 5 minutes + buffer. 664#endif 665 666 bool is_watch_dog_enabled_; 667 bool shutting_down_; 668 // TODO: Switch to Mutex when we can guarantee it won't prevent shutdown in error cases. 669 pthread_mutex_t mutex_; 670 pthread_cond_t cond_; 671 pthread_attr_t attr_; 672 pthread_t pthread_; 673}; 674const unsigned int WatchDog::kWatchDogWarningSeconds; 675const unsigned int WatchDog::kWatchDogTimeoutSeconds; 676 677// Given a set of instruction features from the build, parse it. The 678// input 'str' is a comma separated list of feature names. Parse it and 679// return the InstructionSetFeatures object. 680static InstructionSetFeatures ParseFeatureList(std::string str) { 681 InstructionSetFeatures result; 682 typedef std::vector<std::string> FeatureList; 683 FeatureList features; 684 Split(str, ',', features); 685 for (FeatureList::iterator i = features.begin(); i != features.end(); i++) { 686 std::string feature = Trim(*i); 687 if (feature == "default") { 688 // Nothing to do. 689 } else if (feature == "div") { 690 // Supports divide instruction. 691 result.SetHasDivideInstruction(true); 692 } else if (feature == "nodiv") { 693 // Turn off support for divide instruction. 694 result.SetHasDivideInstruction(false); 695 } else { 696 Usage("Unknown instruction set feature: '%s'", feature.c_str()); 697 } 698 } 699 // others... 700 return result; 701} 702 703static int dex2oat(int argc, char** argv) { 704 original_argc = argc; 705 original_argv = argv; 706 707 TimingLogger timings("compiler", false, false); 708 CumulativeLogger compiler_phases_timings("compilation times"); 709 710 InitLogging(argv); 711 712 // Skip over argv[0]. 713 argv++; 714 argc--; 715 716 if (argc == 0) { 717 Usage("No arguments specified"); 718 } 719 720 std::vector<const char*> dex_filenames; 721 std::vector<const char*> dex_locations; 722 int zip_fd = -1; 723 std::string zip_location; 724 std::string oat_filename; 725 std::string oat_symbols; 726 std::string oat_location; 727 int oat_fd = -1; 728 std::string bitcode_filename; 729 const char* image_classes_zip_filename = NULL; 730 const char* image_classes_filename = NULL; 731 std::string image_filename; 732 std::string boot_image_filename; 733 uintptr_t image_base = 0; 734 std::string android_root; 735 std::vector<const char*> runtime_args; 736 int thread_count = sysconf(_SC_NPROCESSORS_CONF); 737 Compiler::Kind compiler_kind = kUsePortableCompiler 738 ? Compiler::kPortable 739 : Compiler::kQuick; 740 const char* compiler_filter_string = NULL; 741 int huge_method_threshold = CompilerOptions::kDefaultHugeMethodThreshold; 742 int large_method_threshold = CompilerOptions::kDefaultLargeMethodThreshold; 743 int small_method_threshold = CompilerOptions::kDefaultSmallMethodThreshold; 744 int tiny_method_threshold = CompilerOptions::kDefaultTinyMethodThreshold; 745 int num_dex_methods_threshold = CompilerOptions::kDefaultNumDexMethodsThreshold; 746 747 // Take the default set of instruction features from the build. 748 InstructionSetFeatures instruction_set_features = 749 ParseFeatureList(Runtime::GetDefaultInstructionSetFeatures()); 750 751 InstructionSet instruction_set = kRuntimeISA; 752 753 // Profile file to use 754 std::string profile_file; 755 756 bool is_host = false; 757 bool dump_stats = false; 758 bool dump_timing = false; 759 bool dump_passes = false; 760 bool dump_slow_timing = kIsDebugBuild; 761 bool watch_dog_enabled = !kIsTargetBuild; 762 bool generate_gdb_information = kIsDebugBuild; 763 bool generate_helper_trampolines = true; 764 765 for (int i = 0; i < argc; i++) { 766 const StringPiece option(argv[i]); 767 bool log_options = false; 768 if (log_options) { 769 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 770 } 771 if (option.starts_with("--dex-file=")) { 772 dex_filenames.push_back(option.substr(strlen("--dex-file=")).data()); 773 } else if (option.starts_with("--dex-location=")) { 774 dex_locations.push_back(option.substr(strlen("--dex-location=")).data()); 775 } else if (option.starts_with("--zip-fd=")) { 776 const char* zip_fd_str = option.substr(strlen("--zip-fd=")).data(); 777 if (!ParseInt(zip_fd_str, &zip_fd)) { 778 Usage("Failed to parse --zip-fd argument '%s' as an integer", zip_fd_str); 779 } 780 if (zip_fd < 0) { 781 Usage("--zip-fd passed a negative value %d", zip_fd); 782 } 783 } else if (option.starts_with("--zip-location=")) { 784 zip_location = option.substr(strlen("--zip-location=")).data(); 785 } else if (option.starts_with("--oat-file=")) { 786 oat_filename = option.substr(strlen("--oat-file=")).data(); 787 } else if (option.starts_with("--oat-symbols=")) { 788 oat_symbols = option.substr(strlen("--oat-symbols=")).data(); 789 } else if (option.starts_with("--oat-fd=")) { 790 const char* oat_fd_str = option.substr(strlen("--oat-fd=")).data(); 791 if (!ParseInt(oat_fd_str, &oat_fd)) { 792 Usage("Failed to parse --oat-fd argument '%s' as an integer", oat_fd_str); 793 } 794 if (oat_fd < 0) { 795 Usage("--oat-fd passed a negative value %d", oat_fd); 796 } 797 } else if (option == "--watch-dog") { 798 watch_dog_enabled = true; 799 } else if (option == "--no-watch-dog") { 800 watch_dog_enabled = false; 801 } else if (option == "--gen-gdb-info") { 802 generate_gdb_information = true; 803 } else if (option == "--no-helper-trampolines") { 804 generate_helper_trampolines = false; 805 } else if (option == "--no-gen-gdb-info") { 806 generate_gdb_information = false; 807 } else if (option.starts_with("-j")) { 808 const char* thread_count_str = option.substr(strlen("-j")).data(); 809 if (!ParseInt(thread_count_str, &thread_count)) { 810 Usage("Failed to parse -j argument '%s' as an integer", thread_count_str); 811 } 812 } else if (option.starts_with("--oat-location=")) { 813 oat_location = option.substr(strlen("--oat-location=")).data(); 814 } else if (option.starts_with("--bitcode=")) { 815 bitcode_filename = option.substr(strlen("--bitcode=")).data(); 816 } else if (option.starts_with("--image=")) { 817 image_filename = option.substr(strlen("--image=")).data(); 818 } else if (option.starts_with("--image-classes=")) { 819 image_classes_filename = option.substr(strlen("--image-classes=")).data(); 820 } else if (option.starts_with("--image-classes-zip=")) { 821 image_classes_zip_filename = option.substr(strlen("--image-classes-zip=")).data(); 822 } else if (option.starts_with("--base=")) { 823 const char* image_base_str = option.substr(strlen("--base=")).data(); 824 char* end; 825 image_base = strtoul(image_base_str, &end, 16); 826 if (end == image_base_str || *end != '\0') { 827 Usage("Failed to parse hexadecimal value for option %s", option.data()); 828 } 829 } else if (option.starts_with("--boot-image=")) { 830 boot_image_filename = option.substr(strlen("--boot-image=")).data(); 831 } else if (option.starts_with("--android-root=")) { 832 android_root = option.substr(strlen("--android-root=")).data(); 833 } else if (option.starts_with("--instruction-set=")) { 834 StringPiece instruction_set_str = option.substr(strlen("--instruction-set=")).data(); 835 if (instruction_set_str == "arm") { 836 instruction_set = kThumb2; 837 } else if (instruction_set_str == "arm64") { 838 instruction_set = kArm64; 839 } else if (instruction_set_str == "mips") { 840 instruction_set = kMips; 841 } else if (instruction_set_str == "x86") { 842 instruction_set = kX86; 843 } else if (instruction_set_str == "x86_64") { 844 instruction_set = kX86_64; 845 } 846 } else if (option.starts_with("--instruction-set-features=")) { 847 StringPiece str = option.substr(strlen("--instruction-set-features=")).data(); 848 instruction_set_features = ParseFeatureList(str.as_string()); 849 } else if (option.starts_with("--compiler-backend=")) { 850 StringPiece backend_str = option.substr(strlen("--compiler-backend=")).data(); 851 if (backend_str == "Quick") { 852 compiler_kind = Compiler::kQuick; 853 } else if (backend_str == "Optimizing") { 854 compiler_kind = Compiler::kOptimizing; 855 } else if (backend_str == "Portable") { 856 compiler_kind = Compiler::kPortable; 857 } 858 } else if (option.starts_with("--compiler-filter=")) { 859 compiler_filter_string = option.substr(strlen("--compiler-filter=")).data(); 860 } else if (option.starts_with("--huge-method-max=")) { 861 const char* threshold = option.substr(strlen("--huge-method-max=")).data(); 862 if (!ParseInt(threshold, &huge_method_threshold)) { 863 Usage("Failed to parse --huge-method-max '%s' as an integer", threshold); 864 } 865 if (huge_method_threshold < 0) { 866 Usage("--huge-method-max passed a negative value %s", huge_method_threshold); 867 } 868 } else if (option.starts_with("--large-method-max=")) { 869 const char* threshold = option.substr(strlen("--large-method-max=")).data(); 870 if (!ParseInt(threshold, &large_method_threshold)) { 871 Usage("Failed to parse --large-method-max '%s' as an integer", threshold); 872 } 873 if (large_method_threshold < 0) { 874 Usage("--large-method-max passed a negative value %s", large_method_threshold); 875 } 876 } else if (option.starts_with("--small-method-max=")) { 877 const char* threshold = option.substr(strlen("--small-method-max=")).data(); 878 if (!ParseInt(threshold, &small_method_threshold)) { 879 Usage("Failed to parse --small-method-max '%s' as an integer", threshold); 880 } 881 if (small_method_threshold < 0) { 882 Usage("--small-method-max passed a negative value %s", small_method_threshold); 883 } 884 } else if (option.starts_with("--tiny-method-max=")) { 885 const char* threshold = option.substr(strlen("--tiny-method-max=")).data(); 886 if (!ParseInt(threshold, &tiny_method_threshold)) { 887 Usage("Failed to parse --tiny-method-max '%s' as an integer", threshold); 888 } 889 if (tiny_method_threshold < 0) { 890 Usage("--tiny-method-max passed a negative value %s", tiny_method_threshold); 891 } 892 } else if (option.starts_with("--num-dex-methods=")) { 893 const char* threshold = option.substr(strlen("--num-dex-methods=")).data(); 894 if (!ParseInt(threshold, &num_dex_methods_threshold)) { 895 Usage("Failed to parse --num-dex-methods '%s' as an integer", threshold); 896 } 897 if (num_dex_methods_threshold < 0) { 898 Usage("--num-dex-methods passed a negative value %s", num_dex_methods_threshold); 899 } 900 } else if (option == "--host") { 901 is_host = true; 902 } else if (option == "--runtime-arg") { 903 if (++i >= argc) { 904 Usage("Missing required argument for --runtime-arg"); 905 } 906 if (log_options) { 907 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 908 } 909 runtime_args.push_back(argv[i]); 910 } else if (option == "--dump-timing") { 911 dump_timing = true; 912 } else if (option == "--dump-passes") { 913 dump_passes = true; 914 } else if (option == "--dump-stats") { 915 dump_stats = true; 916 } else if (option.starts_with("--profile-file=")) { 917 profile_file = option.substr(strlen("--profile-file=")).data(); 918 VLOG(compiler) << "dex2oat: profile file is " << profile_file; 919 } else if (option == "--no-profile-file") { 920 LOG(INFO) << "dex2oat: no profile file supplied (explicitly)"; 921 // No profile 922 } else if (option == "--print-pass-names") { 923 PassDriver::PrintPassNames(); 924 } else if (option.starts_with("--disable-passes=")) { 925 std::string disable_passes = option.substr(strlen("--disable-passes=")).data(); 926 PassDriver::CreateDefaultPassList(disable_passes); 927 } else { 928 Usage("Unknown argument %s", option.data()); 929 } 930 } 931 932 if (oat_filename.empty() && oat_fd == -1) { 933 Usage("Output must be supplied with either --oat-file or --oat-fd"); 934 } 935 936 if (!oat_filename.empty() && oat_fd != -1) { 937 Usage("--oat-file should not be used with --oat-fd"); 938 } 939 940 if (!oat_symbols.empty() && oat_fd != -1) { 941 Usage("--oat-symbols should not be used with --oat-fd"); 942 } 943 944 if (!oat_symbols.empty() && is_host) { 945 Usage("--oat-symbols should not be used with --host"); 946 } 947 948 if (oat_fd != -1 && !image_filename.empty()) { 949 Usage("--oat-fd should not be used with --image"); 950 } 951 952 if (android_root.empty()) { 953 const char* android_root_env_var = getenv("ANDROID_ROOT"); 954 if (android_root_env_var == NULL) { 955 Usage("--android-root unspecified and ANDROID_ROOT not set"); 956 } 957 android_root += android_root_env_var; 958 } 959 960 bool image = (!image_filename.empty()); 961 if (!image && boot_image_filename.empty()) { 962 boot_image_filename += GetAndroidRoot(); 963 boot_image_filename += "/framework/boot.art"; 964 } 965 std::string boot_image_option; 966 if (!boot_image_filename.empty()) { 967 boot_image_option += "-Ximage:"; 968 boot_image_option += boot_image_filename; 969 } 970 971 if (image_classes_filename != NULL && !image) { 972 Usage("--image-classes should only be used with --image"); 973 } 974 975 if (image_classes_filename != NULL && !boot_image_option.empty()) { 976 Usage("--image-classes should not be used with --boot-image"); 977 } 978 979 if (image_classes_zip_filename != NULL && image_classes_filename == NULL) { 980 Usage("--image-classes-zip should be used with --image-classes"); 981 } 982 983 if (dex_filenames.empty() && zip_fd == -1) { 984 Usage("Input must be supplied with either --dex-file or --zip-fd"); 985 } 986 987 if (!dex_filenames.empty() && zip_fd != -1) { 988 Usage("--dex-file should not be used with --zip-fd"); 989 } 990 991 if (!dex_filenames.empty() && !zip_location.empty()) { 992 Usage("--dex-file should not be used with --zip-location"); 993 } 994 995 if (dex_locations.empty()) { 996 for (size_t i = 0; i < dex_filenames.size(); i++) { 997 dex_locations.push_back(dex_filenames[i]); 998 } 999 } else if (dex_locations.size() != dex_filenames.size()) { 1000 Usage("--dex-location arguments do not match --dex-file arguments"); 1001 } 1002 1003 if (zip_fd != -1 && zip_location.empty()) { 1004 Usage("--zip-location should be supplied with --zip-fd"); 1005 } 1006 1007 if (boot_image_option.empty()) { 1008 if (image_base == 0) { 1009 Usage("Non-zero --base not specified"); 1010 } 1011 } 1012 1013 std::string oat_stripped(oat_filename); 1014 std::string oat_unstripped; 1015 if (!oat_symbols.empty()) { 1016 oat_unstripped += oat_symbols; 1017 } else { 1018 oat_unstripped += oat_filename; 1019 } 1020 1021 if (compiler_filter_string == NULL) { 1022 if (instruction_set == kX86_64 || instruction_set == kArm64) { 1023 // TODO: currently x86-64 and arm64 are only interpreted. 1024 compiler_filter_string = "interpret-only"; 1025 } else if (image) { 1026 compiler_filter_string = "speed"; 1027 } else { 1028#if ART_SMALL_MODE 1029 compiler_filter_string = "interpret-only"; 1030#else 1031 compiler_filter_string = "speed"; 1032#endif 1033 } 1034 } 1035 CHECK(compiler_filter_string != nullptr); 1036 CompilerOptions::CompilerFilter compiler_filter = CompilerOptions::kDefaultCompilerFilter; 1037 if (strcmp(compiler_filter_string, "verify-none") == 0) { 1038 compiler_filter = CompilerOptions::kVerifyNone; 1039 } else if (strcmp(compiler_filter_string, "interpret-only") == 0) { 1040 compiler_filter = CompilerOptions::kInterpretOnly; 1041 } else if (strcmp(compiler_filter_string, "space") == 0) { 1042 compiler_filter = CompilerOptions::kSpace; 1043 } else if (strcmp(compiler_filter_string, "balanced") == 0) { 1044 compiler_filter = CompilerOptions::kBalanced; 1045 } else if (strcmp(compiler_filter_string, "speed") == 0) { 1046 compiler_filter = CompilerOptions::kSpeed; 1047 } else if (strcmp(compiler_filter_string, "everything") == 0) { 1048 compiler_filter = CompilerOptions::kEverything; 1049 } else { 1050 Usage("Unknown --compiler-filter value %s", compiler_filter_string); 1051 } 1052 1053 // TODO: update this code sequence when other platforms support 1054 // helper trampoline calls. 1055 bool helper_trampolines_available; 1056 switch (instruction_set) { 1057 case kArm: 1058 case kThumb2: 1059 helper_trampolines_available = true; 1060 break; 1061 default: 1062 helper_trampolines_available = false; 1063 break; 1064 } 1065 1066 CompilerOptions compiler_options(compiler_filter, 1067 huge_method_threshold, 1068 large_method_threshold, 1069 small_method_threshold, 1070 tiny_method_threshold, 1071 num_dex_methods_threshold, 1072 generate_gdb_information, 1073 generate_helper_trampolines && helper_trampolines_available 1074#ifdef ART_SEA_IR_MODE 1075 , compiler_options.sea_ir_ = true; 1076#endif 1077 ); // NOLINT(whitespace/parens) 1078 1079 // Done with usage checks, enable watchdog if requested 1080 WatchDog watch_dog(watch_dog_enabled); 1081 1082 // Check early that the result of compilation can be written 1083 UniquePtr<File> oat_file; 1084 bool create_file = !oat_unstripped.empty(); // as opposed to using open file descriptor 1085 if (create_file) { 1086 oat_file.reset(OS::CreateEmptyFile(oat_unstripped.c_str())); 1087 if (oat_location.empty()) { 1088 oat_location = oat_filename; 1089 } 1090 } else { 1091 oat_file.reset(new File(oat_fd, oat_location)); 1092 oat_file->DisableAutoClose(); 1093 } 1094 if (oat_file.get() == NULL) { 1095 PLOG(ERROR) << "Failed to create oat file: " << oat_location; 1096 return EXIT_FAILURE; 1097 } 1098 if (create_file && fchmod(oat_file->Fd(), 0644) != 0) { 1099 PLOG(ERROR) << "Failed to make oat file world readable: " << oat_location; 1100 return EXIT_FAILURE; 1101 } 1102 1103 timings.StartSplit("dex2oat Setup"); 1104 LOG(INFO) << "dex2oat: " << CommandLine(); 1105 1106 Runtime::Options runtime_options; 1107 std::vector<const DexFile*> boot_class_path; 1108 if (boot_image_option.empty()) { 1109 size_t failure_count = OpenDexFiles(dex_filenames, dex_locations, boot_class_path); 1110 if (failure_count > 0) { 1111 LOG(ERROR) << "Failed to open some dex files: " << failure_count; 1112 return EXIT_FAILURE; 1113 } 1114 runtime_options.push_back(std::make_pair("bootclasspath", &boot_class_path)); 1115 } else { 1116 runtime_options.push_back(std::make_pair(boot_image_option.c_str(), 1117 reinterpret_cast<void*>(NULL))); 1118 } 1119 for (size_t i = 0; i < runtime_args.size(); i++) { 1120 runtime_options.push_back(std::make_pair(runtime_args[i], reinterpret_cast<void*>(NULL))); 1121 } 1122 1123 VerificationResults verification_results(&compiler_options); 1124 DexFileToMethodInlinerMap method_inliner_map; 1125 CompilerCallbacksImpl callbacks(&verification_results, &method_inliner_map); 1126 runtime_options.push_back(std::make_pair("compilercallbacks", &callbacks)); 1127 1128 Dex2Oat* p_dex2oat; 1129 if (!Dex2Oat::Create(&p_dex2oat, 1130 runtime_options, 1131 compiler_options, 1132 compiler_kind, 1133 instruction_set, 1134 instruction_set_features, 1135 &verification_results, 1136 &method_inliner_map, 1137 thread_count)) { 1138 LOG(ERROR) << "Failed to create dex2oat"; 1139 return EXIT_FAILURE; 1140 } 1141 UniquePtr<Dex2Oat> dex2oat(p_dex2oat); 1142 // Runtime::Create acquired the mutator_lock_ that is normally given away when we Runtime::Start, 1143 // give it away now so that we don't starve GC. 1144 Thread* self = Thread::Current(); 1145 self->TransitionFromRunnableToSuspended(kNative); 1146 // If we're doing the image, override the compiler filter to force full compilation. Must be 1147 // done ahead of WellKnownClasses::Init that causes verification. Note: doesn't force 1148 // compilation of class initializers. 1149 // Whilst we're in native take the opportunity to initialize well known classes. 1150 WellKnownClasses::Init(self->GetJniEnv()); 1151 1152 // If --image-classes was specified, calculate the full list of classes to include in the image 1153 UniquePtr<CompilerDriver::DescriptorSet> image_classes(NULL); 1154 if (image_classes_filename != NULL) { 1155 std::string error_msg; 1156 if (image_classes_zip_filename != NULL) { 1157 image_classes.reset(dex2oat->ReadImageClassesFromZip(image_classes_zip_filename, 1158 image_classes_filename, 1159 &error_msg)); 1160 } else { 1161 image_classes.reset(dex2oat->ReadImageClassesFromFile(image_classes_filename)); 1162 } 1163 if (image_classes.get() == NULL) { 1164 LOG(ERROR) << "Failed to create list of image classes from '" << image_classes_filename << 1165 "': " << error_msg; 1166 return EXIT_FAILURE; 1167 } 1168 } 1169 1170 std::vector<const DexFile*> dex_files; 1171 if (boot_image_option.empty()) { 1172 dex_files = Runtime::Current()->GetClassLinker()->GetBootClassPath(); 1173 } else { 1174 if (dex_filenames.empty()) { 1175 ATRACE_BEGIN("Opening zip archive from file descriptor"); 1176 std::string error_msg; 1177 UniquePtr<ZipArchive> zip_archive(ZipArchive::OpenFromFd(zip_fd, zip_location.c_str(), 1178 &error_msg)); 1179 if (zip_archive.get() == NULL) { 1180 LOG(ERROR) << "Failed to open zip from file descriptor for '" << zip_location << "': " 1181 << error_msg; 1182 return EXIT_FAILURE; 1183 } 1184 const DexFile* dex_file = DexFile::Open(*zip_archive.get(), zip_location, &error_msg); 1185 if (dex_file == NULL) { 1186 LOG(ERROR) << "Failed to open dex from file descriptor for zip file '" << zip_location 1187 << "': " << error_msg; 1188 return EXIT_FAILURE; 1189 } 1190 dex_files.push_back(dex_file); 1191 ATRACE_END(); 1192 } else { 1193 size_t failure_count = OpenDexFiles(dex_filenames, dex_locations, dex_files); 1194 if (failure_count > 0) { 1195 LOG(ERROR) << "Failed to open some dex files: " << failure_count; 1196 return EXIT_FAILURE; 1197 } 1198 } 1199 1200 const bool kSaveDexInput = false; 1201 if (kSaveDexInput) { 1202 for (size_t i = 0; i < dex_files.size(); ++i) { 1203 const DexFile* dex_file = dex_files[i]; 1204 std::string tmp_file_name(StringPrintf("/data/local/tmp/dex2oat.%d.%zd.dex", getpid(), i)); 1205 UniquePtr<File> tmp_file(OS::CreateEmptyFile(tmp_file_name.c_str())); 1206 if (tmp_file.get() == nullptr) { 1207 PLOG(ERROR) << "Failed to open file " << tmp_file_name 1208 << ". Try: adb shell chmod 777 /data/local/tmp"; 1209 continue; 1210 } 1211 tmp_file->WriteFully(dex_file->Begin(), dex_file->Size()); 1212 LOG(INFO) << "Wrote input to " << tmp_file_name; 1213 } 1214 } 1215 } 1216 // Ensure opened dex files are writable for dex-to-dex transformations. 1217 for (const auto& dex_file : dex_files) { 1218 if (!dex_file->EnableWrite()) { 1219 PLOG(ERROR) << "Failed to make .dex file writeable '" << dex_file->GetLocation() << "'\n"; 1220 } 1221 } 1222 1223 /* 1224 * If we're not in interpret-only or verify-none mode, go ahead and compile small applications. 1225 * Don't bother to check if we're doing the image. 1226 */ 1227 if (!image && compiler_options.IsCompilationEnabled()) { 1228 size_t num_methods = 0; 1229 for (size_t i = 0; i != dex_files.size(); ++i) { 1230 const DexFile* dex_file = dex_files[i]; 1231 CHECK(dex_file != NULL); 1232 num_methods += dex_file->NumMethodIds(); 1233 } 1234 if (num_methods <= compiler_options.GetNumDexMethodsThreshold()) { 1235 compiler_options.SetCompilerFilter(CompilerOptions::kSpeed); 1236 VLOG(compiler) << "Below method threshold, compiling anyways"; 1237 } 1238 } 1239 1240 UniquePtr<const CompilerDriver> compiler(dex2oat->CreateOatFile(boot_image_option, 1241 android_root, 1242 is_host, 1243 dex_files, 1244 oat_file.get(), 1245 bitcode_filename, 1246 image, 1247 image_classes, 1248 dump_stats, 1249 dump_passes, 1250 timings, 1251 compiler_phases_timings, 1252 profile_file)); 1253 1254 if (compiler.get() == NULL) { 1255 LOG(ERROR) << "Failed to create oat file: " << oat_location; 1256 return EXIT_FAILURE; 1257 } 1258 1259 VLOG(compiler) << "Oat file written successfully (unstripped): " << oat_location; 1260 1261 // Notes on the interleaving of creating the image and oat file to 1262 // ensure the references between the two are correct. 1263 // 1264 // Currently we have a memory layout that looks something like this: 1265 // 1266 // +--------------+ 1267 // | image | 1268 // +--------------+ 1269 // | boot oat | 1270 // +--------------+ 1271 // | alloc spaces | 1272 // +--------------+ 1273 // 1274 // There are several constraints on the loading of the image and boot.oat. 1275 // 1276 // 1. The image is expected to be loaded at an absolute address and 1277 // contains Objects with absolute pointers within the image. 1278 // 1279 // 2. There are absolute pointers from Methods in the image to their 1280 // code in the oat. 1281 // 1282 // 3. There are absolute pointers from the code in the oat to Methods 1283 // in the image. 1284 // 1285 // 4. There are absolute pointers from code in the oat to other code 1286 // in the oat. 1287 // 1288 // To get this all correct, we go through several steps. 1289 // 1290 // 1. We have already created that oat file above with 1291 // CreateOatFile. Originally this was just our own proprietary file 1292 // but now it is contained within an ELF dynamic object (aka an .so 1293 // file). The Compiler returned by CreateOatFile provides 1294 // PatchInformation for references to oat code and Methods that need 1295 // to be update once we know where the oat file will be located 1296 // after the image. 1297 // 1298 // 2. We create the image file. It needs to know where the oat file 1299 // will be loaded after itself. Originally when oat file was simply 1300 // memory mapped so we could predict where its contents were based 1301 // on the file size. Now that it is an ELF file, we need to inspect 1302 // the ELF file to understand the in memory segment layout including 1303 // where the oat header is located within. ImageWriter's 1304 // PatchOatCodeAndMethods uses the PatchInformation from the 1305 // Compiler to touch up absolute references in the oat file. 1306 // 1307 // 3. We fixup the ELF program headers so that dlopen will try to 1308 // load the .so at the desired location at runtime by offsetting the 1309 // Elf32_Phdr.p_vaddr values by the desired base address. 1310 // 1311 if (image) { 1312 timings.NewSplit("dex2oat ImageWriter"); 1313 bool image_creation_success = dex2oat->CreateImageFile(image_filename, 1314 image_base, 1315 oat_unstripped, 1316 oat_location, 1317 *compiler.get()); 1318 if (!image_creation_success) { 1319 return EXIT_FAILURE; 1320 } 1321 VLOG(compiler) << "Image written successfully: " << image_filename; 1322 } 1323 1324 if (is_host) { 1325 if (dump_timing || (dump_slow_timing && timings.GetTotalNs() > MsToNs(1000))) { 1326 LOG(INFO) << Dumpable<TimingLogger>(timings); 1327 } 1328 if (dump_passes) { 1329 LOG(INFO) << Dumpable<CumulativeLogger>(*compiler.get()->GetTimingsLogger()); 1330 } 1331 return EXIT_SUCCESS; 1332 } 1333 1334 // If we don't want to strip in place, copy from unstripped location to stripped location. 1335 // We need to strip after image creation because FixupElf needs to use .strtab. 1336 if (oat_unstripped != oat_stripped) { 1337 timings.NewSplit("dex2oat OatFile copy"); 1338 oat_file.reset(); 1339 UniquePtr<File> in(OS::OpenFileForReading(oat_unstripped.c_str())); 1340 UniquePtr<File> out(OS::CreateEmptyFile(oat_stripped.c_str())); 1341 size_t buffer_size = 8192; 1342 UniquePtr<uint8_t> buffer(new uint8_t[buffer_size]); 1343 while (true) { 1344 int bytes_read = TEMP_FAILURE_RETRY(read(in->Fd(), buffer.get(), buffer_size)); 1345 if (bytes_read <= 0) { 1346 break; 1347 } 1348 bool write_ok = out->WriteFully(buffer.get(), bytes_read); 1349 CHECK(write_ok); 1350 } 1351 oat_file.reset(out.release()); 1352 VLOG(compiler) << "Oat file copied successfully (stripped): " << oat_stripped; 1353 } 1354 1355#if ART_USE_PORTABLE_COMPILER // We currently only generate symbols on Portable 1356 timings.NewSplit("dex2oat ElfStripper"); 1357 // Strip unneeded sections for target 1358 off_t seek_actual = lseek(oat_file->Fd(), 0, SEEK_SET); 1359 CHECK_EQ(0, seek_actual); 1360 std::string error_msg; 1361 CHECK(ElfStripper::Strip(oat_file.get(), &error_msg)) << error_msg; 1362 1363 1364 // We wrote the oat file successfully, and want to keep it. 1365 VLOG(compiler) << "Oat file written successfully (stripped): " << oat_location; 1366#endif // ART_USE_PORTABLE_COMPILER 1367 1368 timings.EndSplit(); 1369 1370 if (dump_timing || (dump_slow_timing && timings.GetTotalNs() > MsToNs(1000))) { 1371 LOG(INFO) << Dumpable<TimingLogger>(timings); 1372 } 1373 if (dump_passes) { 1374 LOG(INFO) << Dumpable<CumulativeLogger>(compiler_phases_timings); 1375 } 1376 1377 // Everything was successfully written, do an explicit exit here to avoid running Runtime 1378 // destructors that take time (bug 10645725) unless we're a debug build or running on valgrind. 1379 if (!kIsDebugBuild && (RUNNING_ON_VALGRIND == 0)) { 1380 dex2oat->LogCompletionTime(); 1381 exit(EXIT_SUCCESS); 1382 } 1383 1384 return EXIT_SUCCESS; 1385} // NOLINT(readability/fn_size) 1386} // namespace art 1387 1388int main(int argc, char** argv) { 1389 return art::dex2oat(argc, argv); 1390} 1391