dex2oat.cc revision 9cad72d80603b3ff59be66b2cffd3f6dcbd9947f
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#if defined(__linux__) && defined(__arm__) 29#include <sys/personality.h> 30#include <sys/utsname.h> 31#endif 32 33#include "base/stl_util.h" 34#include "base/stringpiece.h" 35#include "base/timing_logger.h" 36#include "base/unix_file/fd_file.h" 37#include "class_linker.h" 38#include "compiler.h" 39#include "compiler_callbacks.h" 40#include "dex_file-inl.h" 41#include "dex/pass_driver_me_opts.h" 42#include "dex/verification_results.h" 43#include "driver/compiler_callbacks_impl.h" 44#include "driver/compiler_driver.h" 45#include "driver/compiler_options.h" 46#include "elf_fixup.h" 47#include "elf_stripper.h" 48#include "gc/space/image_space.h" 49#include "gc/space/space-inl.h" 50#include "image_writer.h" 51#include "leb128.h" 52#include "mirror/art_method-inl.h" 53#include "mirror/class-inl.h" 54#include "mirror/class_loader.h" 55#include "mirror/object-inl.h" 56#include "mirror/object_array-inl.h" 57#include "oat_writer.h" 58#include "object_utils.h" 59#include "os.h" 60#include "runtime.h" 61#include "ScopedLocalRef.h" 62#include "scoped_thread_state_change.h" 63#include "vector_output_stream.h" 64#include "well_known_classes.h" 65#include "zip_archive.h" 66 67namespace art { 68 69static int original_argc; 70static char** original_argv; 71 72static std::string CommandLine() { 73 std::vector<std::string> command; 74 for (int i = 0; i < original_argc; ++i) { 75 command.push_back(original_argv[i]); 76 } 77 return Join(command, ' '); 78} 79 80static void UsageErrorV(const char* fmt, va_list ap) { 81 std::string error; 82 StringAppendV(&error, fmt, ap); 83 LOG(ERROR) << error; 84} 85 86static void UsageError(const char* fmt, ...) { 87 va_list ap; 88 va_start(ap, fmt); 89 UsageErrorV(fmt, ap); 90 va_end(ap); 91} 92 93static void Usage(const char* fmt, ...) { 94 va_list ap; 95 va_start(ap, fmt); 96 UsageErrorV(fmt, ap); 97 va_end(ap); 98 99 UsageError("Command: %s", CommandLine().c_str()); 100 101 UsageError("Usage: dex2oat [options]..."); 102 UsageError(""); 103 UsageError(" --dex-file=<dex-file>: specifies a .dex file to compile."); 104 UsageError(" Example: --dex-file=/system/framework/core.jar"); 105 UsageError(""); 106 UsageError(" --zip-fd=<file-descriptor>: specifies a file descriptor of a zip file"); 107 UsageError(" containing a classes.dex file to compile."); 108 UsageError(" Example: --zip-fd=5"); 109 UsageError(""); 110 UsageError(" --zip-location=<zip-location>: specifies a symbolic name for the file"); 111 UsageError(" corresponding to the file descriptor specified by --zip-fd."); 112 UsageError(" Example: --zip-location=/system/app/Calculator.apk"); 113 UsageError(""); 114 UsageError(" --oat-file=<file.oat>: specifies the oat output destination via a filename."); 115 UsageError(" Example: --oat-file=/system/framework/boot.oat"); 116 UsageError(""); 117 UsageError(" --oat-fd=<number>: specifies the oat output destination via a file descriptor."); 118 UsageError(" Example: --oat-fd=6"); 119 UsageError(""); 120 UsageError(" --oat-location=<oat-name>: specifies a symbolic name for the file corresponding"); 121 UsageError(" to the file descriptor specified by --oat-fd."); 122 UsageError(" Example: --oat-location=/data/dalvik-cache/system@app@Calculator.apk.oat"); 123 UsageError(""); 124 UsageError(" --oat-symbols=<file.oat>: specifies the oat output destination with full symbols."); 125 UsageError(" Example: --oat-symbols=/symbols/system/framework/boot.oat"); 126 UsageError(""); 127 UsageError(" --bitcode=<file.bc>: specifies the optional bitcode filename."); 128 UsageError(" Example: --bitcode=/system/framework/boot.bc"); 129 UsageError(""); 130 UsageError(" --image=<file.art>: specifies the output image filename."); 131 UsageError(" Example: --image=/system/framework/boot.art"); 132 UsageError(""); 133 UsageError(" --image-classes=<classname-file>: specifies classes to include in an image."); 134 UsageError(" Example: --image=frameworks/base/preloaded-classes"); 135 UsageError(""); 136 UsageError(" --base=<hex-address>: specifies the base address when creating a boot image."); 137 UsageError(" Example: --base=0x50000000"); 138 UsageError(""); 139 UsageError(" --boot-image=<file.art>: provide the image file for the boot class path."); 140 UsageError(" Example: --boot-image=/system/framework/boot.art"); 141 UsageError(" Default: $ANDROID_ROOT/system/framework/boot.art"); 142 UsageError(""); 143 UsageError(" --android-root=<path>: used to locate libraries for portable linking."); 144 UsageError(" Example: --android-root=out/host/linux-x86"); 145 UsageError(" Default: $ANDROID_ROOT"); 146 UsageError(""); 147 UsageError(" --instruction-set=(arm|arm64|mips|x86|x86_64): compile for a particular instruction"); 148 UsageError(" set."); 149 UsageError(" Example: --instruction-set=x86"); 150 UsageError(" Default: arm"); 151 UsageError(""); 152 UsageError(" --instruction-set-features=...,: Specify instruction set features"); 153 UsageError(" Example: --instruction-set-features=div"); 154 UsageError(" Default: default"); 155 UsageError(""); 156 UsageError(" --compiler-backend=(Quick|Optimizing|Portable): select compiler backend"); 157 UsageError(" set."); 158 UsageError(" Example: --compiler-backend=Portable"); 159 UsageError(" Default: Quick"); 160 UsageError(""); 161 UsageError(" --compiler-filter=(verify-none|interpret-only|space|balanced|speed|everything):"); 162 UsageError(" select compiler filter."); 163 UsageError(" Example: --compiler-filter=everything"); 164#if ART_SMALL_MODE 165 UsageError(" Default: interpret-only"); 166#else 167 UsageError(" Default: speed"); 168#endif 169 UsageError(""); 170 UsageError(" --huge-method-max=<method-instruction-count>: the threshold size for a huge"); 171 UsageError(" method for compiler filter tuning."); 172 UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold); 173 UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold); 174 UsageError(""); 175 UsageError(" --huge-method-max=<method-instruction-count>: threshold size for a huge"); 176 UsageError(" method for compiler filter tuning."); 177 UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold); 178 UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold); 179 UsageError(""); 180 UsageError(" --large-method-max=<method-instruction-count>: threshold size for a large"); 181 UsageError(" method for compiler filter tuning."); 182 UsageError(" Example: --large-method-max=%d", CompilerOptions::kDefaultLargeMethodThreshold); 183 UsageError(" Default: %d", CompilerOptions::kDefaultLargeMethodThreshold); 184 UsageError(""); 185 UsageError(" --small-method-max=<method-instruction-count>: threshold size for a small"); 186 UsageError(" method for compiler filter tuning."); 187 UsageError(" Example: --small-method-max=%d", CompilerOptions::kDefaultSmallMethodThreshold); 188 UsageError(" Default: %d", CompilerOptions::kDefaultSmallMethodThreshold); 189 UsageError(""); 190 UsageError(" --tiny-method-max=<method-instruction-count>: threshold size for a tiny"); 191 UsageError(" method for compiler filter tuning."); 192 UsageError(" Example: --tiny-method-max=%d", CompilerOptions::kDefaultTinyMethodThreshold); 193 UsageError(" Default: %d", CompilerOptions::kDefaultTinyMethodThreshold); 194 UsageError(""); 195 UsageError(" --num-dex-methods=<method-count>: threshold size for a small dex file for"); 196 UsageError(" compiler filter tuning. If the input has fewer than this many methods"); 197 UsageError(" and the filter is not interpret-only or verify-none, overrides the"); 198 UsageError(" filter to use speed"); 199 UsageError(" Example: --num-dex-method=%d", CompilerOptions::kDefaultNumDexMethodsThreshold); 200 UsageError(" Default: %d", CompilerOptions::kDefaultNumDexMethodsThreshold); 201 UsageError(""); 202 UsageError(" --host: used with Portable backend to link against host runtime libraries"); 203 UsageError(""); 204 UsageError(" --dump-timing: display a breakdown of where time was spent"); 205 UsageError(""); 206 UsageError(" --include-debug-symbols: Include ELF symbols in this oat file"); 207 UsageError(""); 208 UsageError(" --no-include-debug-symbols: Do not include ELF symbols in this oat file"); 209 UsageError(""); 210 UsageError(" --runtime-arg <argument>: used to specify various arguments for the runtime,"); 211 UsageError(" such as initial heap size, maximum heap size, and verbose output."); 212 UsageError(" Use a separate --runtime-arg switch for each argument."); 213 UsageError(" Example: --runtime-arg -Xms256m"); 214 UsageError(""); 215 UsageError(" --profile-file=<filename>: specify profiler output file to use for compilation."); 216 UsageError(""); 217 UsageError(" --print-pass-names: print a list of pass names"); 218 UsageError(""); 219 UsageError(" --disable-passes=<pass-names>: disable one or more passes separated by comma."); 220 UsageError(" Example: --disable-passes=UseCount,BBOptimizations"); 221 UsageError(""); 222 std::cerr << "See log for usage error information\n"; 223 exit(EXIT_FAILURE); 224} 225 226class Dex2Oat { 227 public: 228 static bool Create(Dex2Oat** p_dex2oat, 229 const Runtime::Options& runtime_options, 230 const CompilerOptions& compiler_options, 231 Compiler::Kind compiler_kind, 232 InstructionSet instruction_set, 233 InstructionSetFeatures instruction_set_features, 234 VerificationResults* verification_results, 235 DexFileToMethodInlinerMap* method_inliner_map, 236 size_t thread_count) 237 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_) { 238 CHECK(verification_results != nullptr); 239 CHECK(method_inliner_map != nullptr); 240 std::unique_ptr<Dex2Oat> dex2oat(new Dex2Oat(&compiler_options, 241 compiler_kind, 242 instruction_set, 243 instruction_set_features, 244 verification_results, 245 method_inliner_map, 246 thread_count)); 247 if (!dex2oat->CreateRuntime(runtime_options, instruction_set)) { 248 *p_dex2oat = nullptr; 249 return false; 250 } 251 *p_dex2oat = dex2oat.release(); 252 return true; 253 } 254 255 ~Dex2Oat() { 256 delete runtime_; 257 LogCompletionTime(); 258 } 259 260 void LogCompletionTime() { 261 LOG(INFO) << "dex2oat took " << PrettyDuration(NanoTime() - start_ns_) 262 << " (threads: " << thread_count_ << ")"; 263 } 264 265 266 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 267 CompilerDriver::DescriptorSet* ReadImageClassesFromFile(const char* image_classes_filename) { 268 std::unique_ptr<std::ifstream> image_classes_file(new std::ifstream(image_classes_filename, 269 std::ifstream::in)); 270 if (image_classes_file.get() == nullptr) { 271 LOG(ERROR) << "Failed to open image classes file " << image_classes_filename; 272 return nullptr; 273 } 274 std::unique_ptr<CompilerDriver::DescriptorSet> result(ReadImageClasses(*image_classes_file.get())); 275 image_classes_file->close(); 276 return result.release(); 277 } 278 279 CompilerDriver::DescriptorSet* ReadImageClasses(std::istream& image_classes_stream) { 280 std::unique_ptr<CompilerDriver::DescriptorSet> image_classes(new CompilerDriver::DescriptorSet); 281 while (image_classes_stream.good()) { 282 std::string dot; 283 std::getline(image_classes_stream, dot); 284 if (StartsWith(dot, "#") || dot.empty()) { 285 continue; 286 } 287 std::string descriptor(DotToDescriptor(dot.c_str())); 288 image_classes->insert(descriptor); 289 } 290 return image_classes.release(); 291 } 292 293 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 294 CompilerDriver::DescriptorSet* ReadImageClassesFromZip(const char* zip_filename, 295 const char* image_classes_filename, 296 std::string* error_msg) { 297 std::unique_ptr<ZipArchive> zip_archive(ZipArchive::Open(zip_filename, error_msg)); 298 if (zip_archive.get() == nullptr) { 299 return nullptr; 300 } 301 std::unique_ptr<ZipEntry> zip_entry(zip_archive->Find(image_classes_filename, error_msg)); 302 if (zip_entry.get() == nullptr) { 303 *error_msg = StringPrintf("Failed to find '%s' within '%s': %s", image_classes_filename, 304 zip_filename, error_msg->c_str()); 305 return nullptr; 306 } 307 std::unique_ptr<MemMap> image_classes_file(zip_entry->ExtractToMemMap(zip_filename, 308 image_classes_filename, 309 error_msg)); 310 if (image_classes_file.get() == nullptr) { 311 *error_msg = StringPrintf("Failed to extract '%s' from '%s': %s", image_classes_filename, 312 zip_filename, error_msg->c_str()); 313 return nullptr; 314 } 315 const std::string image_classes_string(reinterpret_cast<char*>(image_classes_file->Begin()), 316 image_classes_file->Size()); 317 std::istringstream image_classes_stream(image_classes_string); 318 return ReadImageClasses(image_classes_stream); 319 } 320 321 const CompilerDriver* CreateOatFile(const std::string& boot_image_option, 322 const std::string& android_root, 323 bool is_host, 324 const std::vector<const DexFile*>& dex_files, 325 File* oat_file, 326 const std::string& bitcode_filename, 327 bool image, 328 std::unique_ptr<CompilerDriver::DescriptorSet>& image_classes, 329 bool dump_stats, 330 bool dump_passes, 331 TimingLogger& timings, 332 CumulativeLogger& compiler_phases_timings, 333 std::string profile_file) { 334 // Handle and ClassLoader creation needs to come after Runtime::Create 335 jobject class_loader = nullptr; 336 Thread* self = Thread::Current(); 337 if (!boot_image_option.empty()) { 338 ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 339 std::vector<const DexFile*> class_path_files(dex_files); 340 OpenClassPathFiles(runtime_->GetClassPathString(), class_path_files); 341 ScopedObjectAccess soa(self); 342 for (size_t i = 0; i < class_path_files.size(); i++) { 343 class_linker->RegisterDexFile(*class_path_files[i]); 344 } 345 soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader); 346 ScopedLocalRef<jobject> class_loader_local(soa.Env(), 347 soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader)); 348 class_loader = soa.Env()->NewGlobalRef(class_loader_local.get()); 349 Runtime::Current()->SetCompileTimeClassPath(class_loader, class_path_files); 350 } 351 352 std::unique_ptr<CompilerDriver> driver(new CompilerDriver(compiler_options_, 353 verification_results_, 354 method_inliner_map_, 355 compiler_kind_, 356 instruction_set_, 357 instruction_set_features_, 358 image, 359 image_classes.release(), 360 thread_count_, 361 dump_stats, 362 dump_passes, 363 &compiler_phases_timings, 364 profile_file)); 365 366 driver->GetCompiler()->SetBitcodeFileName(*driver.get(), bitcode_filename); 367 368 driver->CompileAll(class_loader, dex_files, &timings); 369 370 timings.NewSplit("dex2oat OatWriter"); 371 std::string image_file_location; 372 uint32_t image_file_location_oat_checksum = 0; 373 uintptr_t image_file_location_oat_data_begin = 0; 374 if (!driver->IsImage()) { 375 TimingLogger::ScopedSplit split("Loading image checksum", &timings); 376 gc::space::ImageSpace* image_space = Runtime::Current()->GetHeap()->GetImageSpace(); 377 image_file_location_oat_checksum = image_space->GetImageHeader().GetOatChecksum(); 378 image_file_location_oat_data_begin = 379 reinterpret_cast<uintptr_t>(image_space->GetImageHeader().GetOatDataBegin()); 380 image_file_location = image_space->GetImageFilename(); 381 } 382 383 OatWriter oat_writer(dex_files, 384 image_file_location_oat_checksum, 385 image_file_location_oat_data_begin, 386 image_file_location, 387 driver.get(), 388 &timings); 389 390 TimingLogger::ScopedSplit split("Writing ELF", &timings); 391 if (!driver->WriteElf(android_root, is_host, dex_files, &oat_writer, oat_file)) { 392 LOG(ERROR) << "Failed to write ELF file " << oat_file->GetPath(); 393 return nullptr; 394 } 395 396 return driver.release(); 397 } 398 399 bool CreateImageFile(const std::string& image_filename, 400 uintptr_t image_base, 401 const std::string& oat_filename, 402 const std::string& oat_location, 403 const CompilerDriver& compiler) 404 LOCKS_EXCLUDED(Locks::mutator_lock_) { 405 uintptr_t oat_data_begin; 406 { 407 // ImageWriter is scoped so it can free memory before doing FixupElf 408 ImageWriter image_writer(compiler); 409 if (!image_writer.Write(image_filename, image_base, oat_filename, oat_location)) { 410 LOG(ERROR) << "Failed to create image file " << image_filename; 411 return false; 412 } 413 oat_data_begin = image_writer.GetOatDataBegin(); 414 } 415 416 std::unique_ptr<File> oat_file(OS::OpenFileReadWrite(oat_filename.c_str())); 417 if (oat_file.get() == nullptr) { 418 PLOG(ERROR) << "Failed to open ELF file: " << oat_filename; 419 return false; 420 } 421 if (!ElfFixup::Fixup(oat_file.get(), oat_data_begin)) { 422 LOG(ERROR) << "Failed to fixup ELF file " << oat_file->GetPath(); 423 return false; 424 } 425 return true; 426 } 427 428 private: 429 explicit Dex2Oat(const CompilerOptions* compiler_options, 430 Compiler::Kind compiler_kind, 431 InstructionSet instruction_set, 432 InstructionSetFeatures instruction_set_features, 433 VerificationResults* verification_results, 434 DexFileToMethodInlinerMap* method_inliner_map, 435 size_t thread_count) 436 : compiler_options_(compiler_options), 437 compiler_kind_(compiler_kind), 438 instruction_set_(instruction_set), 439 instruction_set_features_(instruction_set_features), 440 verification_results_(verification_results), 441 method_inliner_map_(method_inliner_map), 442 runtime_(nullptr), 443 thread_count_(thread_count), 444 start_ns_(NanoTime()) { 445 CHECK(compiler_options != nullptr); 446 CHECK(verification_results != nullptr); 447 CHECK(method_inliner_map != nullptr); 448 } 449 450 bool CreateRuntime(const Runtime::Options& runtime_options, InstructionSet instruction_set) 451 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_) { 452 if (!Runtime::Create(runtime_options, false)) { 453 LOG(ERROR) << "Failed to create runtime"; 454 return false; 455 } 456 Runtime* runtime = Runtime::Current(); 457 runtime->SetInstructionSet(instruction_set); 458 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 459 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 460 if (!runtime->HasCalleeSaveMethod(type)) { 461 runtime->SetCalleeSaveMethod(runtime->CreateCalleeSaveMethod(type), type); 462 } 463 } 464 runtime->GetClassLinker()->FixupDexCaches(runtime->GetResolutionMethod()); 465 runtime_ = runtime; 466 return true; 467 } 468 469 // Appends to dex_files any elements of class_path that it doesn't already 470 // contain. This will open those dex files as necessary. 471 static void OpenClassPathFiles(const std::string& class_path, 472 std::vector<const DexFile*>& dex_files) { 473 std::vector<std::string> parsed; 474 Split(class_path, ':', parsed); 475 // Take Locks::mutator_lock_ so that lock ordering on the ClassLinker::dex_lock_ is maintained. 476 ScopedObjectAccess soa(Thread::Current()); 477 for (size_t i = 0; i < parsed.size(); ++i) { 478 if (DexFilesContains(dex_files, parsed[i])) { 479 continue; 480 } 481 std::string error_msg; 482 const DexFile* dex_file = DexFile::Open(parsed[i].c_str(), parsed[i].c_str(), &error_msg); 483 if (dex_file == nullptr) { 484 LOG(WARNING) << "Failed to open dex file '" << parsed[i] << "': " << error_msg; 485 } else { 486 dex_files.push_back(dex_file); 487 } 488 } 489 } 490 491 // Returns true if dex_files has a dex with the named location. 492 static bool DexFilesContains(const std::vector<const DexFile*>& dex_files, 493 const std::string& location) { 494 for (size_t i = 0; i < dex_files.size(); ++i) { 495 if (dex_files[i]->GetLocation() == location) { 496 return true; 497 } 498 } 499 return false; 500 } 501 502 const CompilerOptions* const compiler_options_; 503 const Compiler::Kind compiler_kind_; 504 505 const InstructionSet instruction_set_; 506 const InstructionSetFeatures instruction_set_features_; 507 508 VerificationResults* const verification_results_; 509 DexFileToMethodInlinerMap* const method_inliner_map_; 510 Runtime* runtime_; 511 size_t thread_count_; 512 uint64_t start_ns_; 513 514 DISALLOW_IMPLICIT_CONSTRUCTORS(Dex2Oat); 515}; 516 517static bool ParseInt(const char* in, int* out) { 518 char* end; 519 int result = strtol(in, &end, 10); 520 if (in == end || *end != '\0') { 521 return false; 522 } 523 *out = result; 524 return true; 525} 526 527static size_t OpenDexFiles(const std::vector<const char*>& dex_filenames, 528 const std::vector<const char*>& dex_locations, 529 std::vector<const DexFile*>& dex_files) { 530 size_t failure_count = 0; 531 for (size_t i = 0; i < dex_filenames.size(); i++) { 532 const char* dex_filename = dex_filenames[i]; 533 const char* dex_location = dex_locations[i]; 534 ATRACE_BEGIN(StringPrintf("Opening dex file '%s'", dex_filenames[i]).c_str()); 535 std::string error_msg; 536 if (!OS::FileExists(dex_filename)) { 537 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 538 continue; 539 } 540 const DexFile* dex_file = DexFile::Open(dex_filename, dex_location, &error_msg); 541 if (dex_file == nullptr) { 542 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 543 ++failure_count; 544 } else { 545 dex_files.push_back(dex_file); 546 } 547 ATRACE_END(); 548 } 549 return failure_count; 550} 551 552// The primary goal of the watchdog is to prevent stuck build servers 553// during development when fatal aborts lead to a cascade of failures 554// that result in a deadlock. 555class WatchDog { 556// WatchDog defines its own CHECK_PTHREAD_CALL to avoid using Log which uses locks 557#undef CHECK_PTHREAD_CALL 558#define CHECK_WATCH_DOG_PTHREAD_CALL(call, args, what) \ 559 do { \ 560 int rc = call args; \ 561 if (rc != 0) { \ 562 errno = rc; \ 563 std::string message(# call); \ 564 message += " failed for "; \ 565 message += reason; \ 566 Fatal(message); \ 567 } \ 568 } while (false) 569 570 public: 571 explicit WatchDog(bool is_watch_dog_enabled) { 572 is_watch_dog_enabled_ = is_watch_dog_enabled; 573 if (!is_watch_dog_enabled_) { 574 return; 575 } 576 shutting_down_ = false; 577 const char* reason = "dex2oat watch dog thread startup"; 578 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_init, (&mutex_, nullptr), reason); 579 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_init, (&cond_, nullptr), reason); 580 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_init, (&attr_), reason); 581 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_create, (&pthread_, &attr_, &CallBack, this), reason); 582 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_destroy, (&attr_), reason); 583 } 584 ~WatchDog() { 585 if (!is_watch_dog_enabled_) { 586 return; 587 } 588 const char* reason = "dex2oat watch dog thread shutdown"; 589 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 590 shutting_down_ = true; 591 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_signal, (&cond_), reason); 592 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 593 594 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_join, (pthread_, nullptr), reason); 595 596 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_destroy, (&cond_), reason); 597 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_destroy, (&mutex_), reason); 598 } 599 600 private: 601 static void* CallBack(void* arg) { 602 WatchDog* self = reinterpret_cast<WatchDog*>(arg); 603 ::art::SetThreadName("dex2oat watch dog"); 604 self->Wait(); 605 return nullptr; 606 } 607 608 static void Message(char severity, const std::string& message) { 609 // TODO: Remove when we switch to LOG when we can guarantee it won't prevent shutdown in error 610 // cases. 611 fprintf(stderr, "dex2oat%s %c %d %d %s\n", 612 kIsDebugBuild ? "d" : "", 613 severity, 614 getpid(), 615 GetTid(), 616 message.c_str()); 617 } 618 619 static void Warn(const std::string& message) { 620 Message('W', message); 621 } 622 623 static void Fatal(const std::string& message) { 624 Message('F', message); 625 exit(1); 626 } 627 628 void Wait() { 629 bool warning = true; 630 CHECK_GT(kWatchDogTimeoutSeconds, kWatchDogWarningSeconds); 631 // TODO: tune the multiplier for GC verification, the following is just to make the timeout 632 // large. 633 int64_t multiplier = kVerifyObjectSupport > kVerifyObjectModeFast ? 100 : 1; 634 timespec warning_ts; 635 InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogWarningSeconds * 1000, 0, &warning_ts); 636 timespec timeout_ts; 637 InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogTimeoutSeconds * 1000, 0, &timeout_ts); 638 const char* reason = "dex2oat watch dog thread waiting"; 639 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 640 while (!shutting_down_) { 641 int rc = TEMP_FAILURE_RETRY(pthread_cond_timedwait(&cond_, &mutex_, 642 warning ? &warning_ts 643 : &timeout_ts)); 644 if (rc == ETIMEDOUT) { 645 std::string message(StringPrintf("dex2oat did not finish after %d seconds", 646 warning ? kWatchDogWarningSeconds 647 : kWatchDogTimeoutSeconds)); 648 if (warning) { 649 Warn(message.c_str()); 650 warning = false; 651 } else { 652 Fatal(message.c_str()); 653 } 654 } else if (rc != 0) { 655 std::string message(StringPrintf("pthread_cond_timedwait failed: %s", 656 strerror(errno))); 657 Fatal(message.c_str()); 658 } 659 } 660 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 661 } 662 663 // When setting timeouts, keep in mind that the build server may not be as fast as your desktop. 664#if ART_USE_PORTABLE_COMPILER 665 static const unsigned int kWatchDogWarningSeconds = 2 * 60; // 2 minutes. 666 static const unsigned int kWatchDogTimeoutSeconds = 30 * 60; // 25 minutes + buffer. 667#else 668 static const unsigned int kWatchDogWarningSeconds = 1 * 60; // 1 minute. 669 static const unsigned int kWatchDogTimeoutSeconds = 6 * 60; // 5 minutes + buffer. 670#endif 671 672 bool is_watch_dog_enabled_; 673 bool shutting_down_; 674 // TODO: Switch to Mutex when we can guarantee it won't prevent shutdown in error cases. 675 pthread_mutex_t mutex_; 676 pthread_cond_t cond_; 677 pthread_attr_t attr_; 678 pthread_t pthread_; 679}; 680const unsigned int WatchDog::kWatchDogWarningSeconds; 681const unsigned int WatchDog::kWatchDogTimeoutSeconds; 682 683// Given a set of instruction features from the build, parse it. The 684// input 'str' is a comma separated list of feature names. Parse it and 685// return the InstructionSetFeatures object. 686static InstructionSetFeatures ParseFeatureList(std::string str) { 687 InstructionSetFeatures result; 688 typedef std::vector<std::string> FeatureList; 689 FeatureList features; 690 Split(str, ',', features); 691 for (FeatureList::iterator i = features.begin(); i != features.end(); i++) { 692 std::string feature = Trim(*i); 693 if (feature == "default") { 694 // Nothing to do. 695 } else if (feature == "div") { 696 // Supports divide instruction. 697 result.SetHasDivideInstruction(true); 698 } else if (feature == "nodiv") { 699 // Turn off support for divide instruction. 700 result.SetHasDivideInstruction(false); 701 } else if (feature == "lpae") { 702 // Supports Large Physical Address Extension. 703 result.SetHasLpae(true); 704 } else if (feature == "nolpae") { 705 // Turn off support for Large Physical Address Extension. 706 result.SetHasLpae(false); 707 } else { 708 Usage("Unknown instruction set feature: '%s'", feature.c_str()); 709 } 710 } 711 // others... 712 return result; 713} 714 715void ParseStringAfterChar(const std::string& s, char c, std::string* parsed_value) { 716 std::string::size_type colon = s.find(c); 717 if (colon == std::string::npos) { 718 Usage("Missing char %c in option %s\n", c, s.c_str()); 719 } 720 // Add one to remove the char we were trimming until. 721 *parsed_value = s.substr(colon + 1); 722} 723 724void ParseDouble(const std::string& option, char after_char, 725 double min, double max, double* parsed_value) { 726 std::string substring; 727 ParseStringAfterChar(option, after_char, &substring); 728 bool sane_val = true; 729 double value; 730 if (false) { 731 // TODO: this doesn't seem to work on the emulator. b/15114595 732 std::stringstream iss(substring); 733 iss >> value; 734 // Ensure that we have a value, there was no cruft after it and it satisfies a sensible range. 735 sane_val = iss.eof() && (value >= min) && (value <= max); 736 } else { 737 char* end = nullptr; 738 value = strtod(substring.c_str(), &end); 739 sane_val = *end == '\0' && value >= min && value <= max; 740 } 741 if (!sane_val) { 742 Usage("Invalid double value %s for option %s\n", substring.c_str(), option.c_str()); 743 } 744 *parsed_value = value; 745} 746 747void CheckExplicitCheckOptions(InstructionSet isa, bool* explicit_null_checks, 748 bool* explicit_so_checks, bool* explicit_suspend_checks) { 749 switch (isa) { 750 case kArm: 751 break; // All checks implemented, leave as is. 752 753 default: // No checks implemented, reset all to explicit checks. 754 *explicit_null_checks = true; 755 *explicit_so_checks = true; 756 *explicit_suspend_checks = true; 757 } 758} 759 760static int dex2oat(int argc, char** argv) { 761#if defined(__linux__) && defined(__arm__) 762 int major, minor; 763 struct utsname uts; 764 if (uname(&uts) != -1 && 765 sscanf(uts.release, "%d.%d", &major, &minor) == 2 && 766 ((major < 3) || ((major == 3) && (minor < 4)))) { 767 // Kernels before 3.4 don't handle the ASLR well and we can run out of address 768 // space (http://b/13564922). Work around the issue by inhibiting further mmap() randomization. 769 int old_personality = personality(0xffffffff); 770 if ((old_personality & ADDR_NO_RANDOMIZE) == 0) { 771 int new_personality = personality(old_personality | ADDR_NO_RANDOMIZE); 772 if (new_personality == -1) { 773 LOG(WARNING) << "personality(. | ADDR_NO_RANDOMIZE) failed."; 774 } 775 } 776 } 777#endif 778 779 original_argc = argc; 780 original_argv = argv; 781 782 TimingLogger timings("compiler", false, false); 783 CumulativeLogger compiler_phases_timings("compilation times"); 784 785 InitLogging(argv); 786 787 // Skip over argv[0]. 788 argv++; 789 argc--; 790 791 if (argc == 0) { 792 Usage("No arguments specified"); 793 } 794 795 std::vector<const char*> dex_filenames; 796 std::vector<const char*> dex_locations; 797 int zip_fd = -1; 798 std::string zip_location; 799 std::string oat_filename; 800 std::string oat_symbols; 801 std::string oat_location; 802 int oat_fd = -1; 803 std::string bitcode_filename; 804 const char* image_classes_zip_filename = nullptr; 805 const char* image_classes_filename = nullptr; 806 std::string image_filename; 807 std::string boot_image_filename; 808 uintptr_t image_base = 0; 809 std::string android_root; 810 std::vector<const char*> runtime_args; 811 int thread_count = sysconf(_SC_NPROCESSORS_CONF); 812 Compiler::Kind compiler_kind = kUsePortableCompiler 813 ? Compiler::kPortable 814 : Compiler::kQuick; 815 const char* compiler_filter_string = nullptr; 816 int huge_method_threshold = CompilerOptions::kDefaultHugeMethodThreshold; 817 int large_method_threshold = CompilerOptions::kDefaultLargeMethodThreshold; 818 int small_method_threshold = CompilerOptions::kDefaultSmallMethodThreshold; 819 int tiny_method_threshold = CompilerOptions::kDefaultTinyMethodThreshold; 820 int num_dex_methods_threshold = CompilerOptions::kDefaultNumDexMethodsThreshold; 821 822 // Take the default set of instruction features from the build. 823 InstructionSetFeatures instruction_set_features = 824 ParseFeatureList(Runtime::GetDefaultInstructionSetFeatures()); 825 826 InstructionSet instruction_set = kRuntimeISA; 827 828 // Profile file to use 829 std::string profile_file; 830 double top_k_profile_threshold = CompilerOptions::kDefaultTopKProfileThreshold; 831 832 bool is_host = false; 833 bool dump_stats = false; 834 bool dump_timing = false; 835 bool dump_passes = false; 836 bool include_debug_symbols = kIsDebugBuild; 837 bool dump_slow_timing = kIsDebugBuild; 838 bool watch_dog_enabled = !kIsTargetBuild; 839 bool generate_gdb_information = kIsDebugBuild; 840 841 bool explicit_null_checks = true; 842 bool explicit_so_checks = true; 843 bool explicit_suspend_checks = true; 844 bool has_explicit_checks_options = false; 845 846 for (int i = 0; i < argc; i++) { 847 const StringPiece option(argv[i]); 848 const bool log_options = false; 849 if (log_options) { 850 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 851 } 852 if (option.starts_with("--dex-file=")) { 853 dex_filenames.push_back(option.substr(strlen("--dex-file=")).data()); 854 } else if (option.starts_with("--dex-location=")) { 855 dex_locations.push_back(option.substr(strlen("--dex-location=")).data()); 856 } else if (option.starts_with("--zip-fd=")) { 857 const char* zip_fd_str = option.substr(strlen("--zip-fd=")).data(); 858 if (!ParseInt(zip_fd_str, &zip_fd)) { 859 Usage("Failed to parse --zip-fd argument '%s' as an integer", zip_fd_str); 860 } 861 if (zip_fd < 0) { 862 Usage("--zip-fd passed a negative value %d", zip_fd); 863 } 864 } else if (option.starts_with("--zip-location=")) { 865 zip_location = option.substr(strlen("--zip-location=")).data(); 866 } else if (option.starts_with("--oat-file=")) { 867 oat_filename = option.substr(strlen("--oat-file=")).data(); 868 } else if (option.starts_with("--oat-symbols=")) { 869 oat_symbols = option.substr(strlen("--oat-symbols=")).data(); 870 } else if (option.starts_with("--oat-fd=")) { 871 const char* oat_fd_str = option.substr(strlen("--oat-fd=")).data(); 872 if (!ParseInt(oat_fd_str, &oat_fd)) { 873 Usage("Failed to parse --oat-fd argument '%s' as an integer", oat_fd_str); 874 } 875 if (oat_fd < 0) { 876 Usage("--oat-fd passed a negative value %d", oat_fd); 877 } 878 } else if (option == "--watch-dog") { 879 watch_dog_enabled = true; 880 } else if (option == "--no-watch-dog") { 881 watch_dog_enabled = false; 882 } else if (option == "--gen-gdb-info") { 883 generate_gdb_information = true; 884 } else if (option == "--no-gen-gdb-info") { 885 generate_gdb_information = false; 886 } else if (option.starts_with("-j")) { 887 const char* thread_count_str = option.substr(strlen("-j")).data(); 888 if (!ParseInt(thread_count_str, &thread_count)) { 889 Usage("Failed to parse -j argument '%s' as an integer", thread_count_str); 890 } 891 } else if (option.starts_with("--oat-location=")) { 892 oat_location = option.substr(strlen("--oat-location=")).data(); 893 } else if (option.starts_with("--bitcode=")) { 894 bitcode_filename = option.substr(strlen("--bitcode=")).data(); 895 } else if (option.starts_with("--image=")) { 896 image_filename = option.substr(strlen("--image=")).data(); 897 } else if (option.starts_with("--image-classes=")) { 898 image_classes_filename = option.substr(strlen("--image-classes=")).data(); 899 } else if (option.starts_with("--image-classes-zip=")) { 900 image_classes_zip_filename = option.substr(strlen("--image-classes-zip=")).data(); 901 } else if (option.starts_with("--base=")) { 902 const char* image_base_str = option.substr(strlen("--base=")).data(); 903 char* end; 904 image_base = strtoul(image_base_str, &end, 16); 905 if (end == image_base_str || *end != '\0') { 906 Usage("Failed to parse hexadecimal value for option %s", option.data()); 907 } 908 } else if (option.starts_with("--boot-image=")) { 909 boot_image_filename = option.substr(strlen("--boot-image=")).data(); 910 } else if (option.starts_with("--android-root=")) { 911 android_root = option.substr(strlen("--android-root=")).data(); 912 } else if (option.starts_with("--instruction-set=")) { 913 StringPiece instruction_set_str = option.substr(strlen("--instruction-set=")).data(); 914 if (instruction_set_str == "arm") { 915 instruction_set = kThumb2; 916 } else if (instruction_set_str == "arm64") { 917 instruction_set = kArm64; 918 } else if (instruction_set_str == "mips") { 919 instruction_set = kMips; 920 } else if (instruction_set_str == "x86") { 921 instruction_set = kX86; 922 } else if (instruction_set_str == "x86_64") { 923 instruction_set = kX86_64; 924 } 925 } else if (option.starts_with("--instruction-set-features=")) { 926 StringPiece str = option.substr(strlen("--instruction-set-features=")).data(); 927 instruction_set_features = ParseFeatureList(str.as_string()); 928 } else if (option.starts_with("--compiler-backend=")) { 929 StringPiece backend_str = option.substr(strlen("--compiler-backend=")).data(); 930 if (backend_str == "Quick") { 931 compiler_kind = Compiler::kQuick; 932 } else if (backend_str == "Optimizing") { 933 compiler_kind = Compiler::kOptimizing; 934 } else if (backend_str == "Portable") { 935 compiler_kind = Compiler::kPortable; 936 } 937 } else if (option.starts_with("--compiler-filter=")) { 938 compiler_filter_string = option.substr(strlen("--compiler-filter=")).data(); 939 } else if (option.starts_with("--huge-method-max=")) { 940 const char* threshold = option.substr(strlen("--huge-method-max=")).data(); 941 if (!ParseInt(threshold, &huge_method_threshold)) { 942 Usage("Failed to parse --huge-method-max '%s' as an integer", threshold); 943 } 944 if (huge_method_threshold < 0) { 945 Usage("--huge-method-max passed a negative value %s", huge_method_threshold); 946 } 947 } else if (option.starts_with("--large-method-max=")) { 948 const char* threshold = option.substr(strlen("--large-method-max=")).data(); 949 if (!ParseInt(threshold, &large_method_threshold)) { 950 Usage("Failed to parse --large-method-max '%s' as an integer", threshold); 951 } 952 if (large_method_threshold < 0) { 953 Usage("--large-method-max passed a negative value %s", large_method_threshold); 954 } 955 } else if (option.starts_with("--small-method-max=")) { 956 const char* threshold = option.substr(strlen("--small-method-max=")).data(); 957 if (!ParseInt(threshold, &small_method_threshold)) { 958 Usage("Failed to parse --small-method-max '%s' as an integer", threshold); 959 } 960 if (small_method_threshold < 0) { 961 Usage("--small-method-max passed a negative value %s", small_method_threshold); 962 } 963 } else if (option.starts_with("--tiny-method-max=")) { 964 const char* threshold = option.substr(strlen("--tiny-method-max=")).data(); 965 if (!ParseInt(threshold, &tiny_method_threshold)) { 966 Usage("Failed to parse --tiny-method-max '%s' as an integer", threshold); 967 } 968 if (tiny_method_threshold < 0) { 969 Usage("--tiny-method-max passed a negative value %s", tiny_method_threshold); 970 } 971 } else if (option.starts_with("--num-dex-methods=")) { 972 const char* threshold = option.substr(strlen("--num-dex-methods=")).data(); 973 if (!ParseInt(threshold, &num_dex_methods_threshold)) { 974 Usage("Failed to parse --num-dex-methods '%s' as an integer", threshold); 975 } 976 if (num_dex_methods_threshold < 0) { 977 Usage("--num-dex-methods passed a negative value %s", num_dex_methods_threshold); 978 } 979 } else if (option == "--host") { 980 is_host = true; 981 } else if (option == "--runtime-arg") { 982 if (++i >= argc) { 983 Usage("Missing required argument for --runtime-arg"); 984 } 985 if (log_options) { 986 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 987 } 988 runtime_args.push_back(argv[i]); 989 } else if (option == "--dump-timing") { 990 dump_timing = true; 991 } else if (option == "--dump-passes") { 992 dump_passes = true; 993 } else if (option == "--dump-stats") { 994 dump_stats = true; 995 } else if (option == "--include-debug-symbols" || option == "--no-strip-symbols") { 996 include_debug_symbols = true; 997 } else if (option == "--no-include-debug-symbols" || option == "--strip-symbols") { 998 include_debug_symbols = false; 999 } else if (option.starts_with("--profile-file=")) { 1000 profile_file = option.substr(strlen("--profile-file=")).data(); 1001 VLOG(compiler) << "dex2oat: profile file is " << profile_file; 1002 } else if (option == "--no-profile-file") { 1003 // No profile 1004 } else if (option.starts_with("--top-k-profile-threshold=")) { 1005 ParseDouble(option.data(), '=', 10.0, 90.0, &top_k_profile_threshold); 1006 } else if (option == "--print-pass-names") { 1007 PassDriverMEOpts::PrintPassNames(); 1008 } else if (option.starts_with("--disable-passes=")) { 1009 std::string disable_passes = option.substr(strlen("--disable-passes=")).data(); 1010 PassDriverMEOpts::CreateDefaultPassList(disable_passes); 1011 } else if (option.starts_with("--print-passes=")) { 1012 std::string print_passes = option.substr(strlen("--print-passes=")).data(); 1013 PassDriverMEOpts::SetPrintPassList(print_passes); 1014 } else if (option == "--print-all-passes") { 1015 PassDriverMEOpts::SetPrintAllPasses(); 1016 } else if (option.starts_with("--dump-cfg-passes=")) { 1017 std::string dump_passes = option.substr(strlen("--dump-cfg-passes=")).data(); 1018 PassDriverMEOpts::SetDumpPassList(dump_passes); 1019 } else if (option.starts_with("--implicit-checks=")) { 1020 std::string checks = option.substr(strlen("--implicit-checks=")).data(); 1021 std::vector<std::string> checkvec; 1022 Split(checks, ',', checkvec); 1023 for (auto& str : checkvec) { 1024 std::string val = Trim(str); 1025 if (val == "none") { 1026 explicit_null_checks = true; 1027 explicit_so_checks = true; 1028 explicit_suspend_checks = true; 1029 } else if (val == "null") { 1030 explicit_null_checks = false; 1031 } else if (val == "suspend") { 1032 explicit_suspend_checks = false; 1033 } else if (val == "stack") { 1034 explicit_so_checks = false; 1035 } else if (val == "all") { 1036 explicit_null_checks = false; 1037 explicit_so_checks = false; 1038 explicit_suspend_checks = false; 1039 } else { 1040 Usage("--implicit-checks passed non-recognized value %s", val.c_str()); 1041 } 1042 has_explicit_checks_options = true; 1043 } 1044 } else { 1045 Usage("Unknown argument %s", option.data()); 1046 } 1047 } 1048 1049 if (oat_filename.empty() && oat_fd == -1) { 1050 Usage("Output must be supplied with either --oat-file or --oat-fd"); 1051 } 1052 1053 if (!oat_filename.empty() && oat_fd != -1) { 1054 Usage("--oat-file should not be used with --oat-fd"); 1055 } 1056 1057 if (!oat_symbols.empty() && oat_fd != -1) { 1058 Usage("--oat-symbols should not be used with --oat-fd"); 1059 } 1060 1061 if (!oat_symbols.empty() && is_host) { 1062 Usage("--oat-symbols should not be used with --host"); 1063 } 1064 1065 if (oat_fd != -1 && !image_filename.empty()) { 1066 Usage("--oat-fd should not be used with --image"); 1067 } 1068 1069 if (android_root.empty()) { 1070 const char* android_root_env_var = getenv("ANDROID_ROOT"); 1071 if (android_root_env_var == nullptr) { 1072 Usage("--android-root unspecified and ANDROID_ROOT not set"); 1073 } 1074 android_root += android_root_env_var; 1075 } 1076 1077 bool image = (!image_filename.empty()); 1078 if (!image && boot_image_filename.empty()) { 1079 boot_image_filename += GetAndroidRoot(); 1080 boot_image_filename += "/framework/boot.art"; 1081 } 1082 std::string boot_image_option; 1083 if (!boot_image_filename.empty()) { 1084 boot_image_option += "-Ximage:"; 1085 boot_image_option += boot_image_filename; 1086 } 1087 1088 if (image_classes_filename != nullptr && !image) { 1089 Usage("--image-classes should only be used with --image"); 1090 } 1091 1092 if (image_classes_filename != nullptr && !boot_image_option.empty()) { 1093 Usage("--image-classes should not be used with --boot-image"); 1094 } 1095 1096 if (image_classes_zip_filename != nullptr && image_classes_filename == nullptr) { 1097 Usage("--image-classes-zip should be used with --image-classes"); 1098 } 1099 1100 if (dex_filenames.empty() && zip_fd == -1) { 1101 Usage("Input must be supplied with either --dex-file or --zip-fd"); 1102 } 1103 1104 if (!dex_filenames.empty() && zip_fd != -1) { 1105 Usage("--dex-file should not be used with --zip-fd"); 1106 } 1107 1108 if (!dex_filenames.empty() && !zip_location.empty()) { 1109 Usage("--dex-file should not be used with --zip-location"); 1110 } 1111 1112 if (dex_locations.empty()) { 1113 for (size_t i = 0; i < dex_filenames.size(); i++) { 1114 dex_locations.push_back(dex_filenames[i]); 1115 } 1116 } else if (dex_locations.size() != dex_filenames.size()) { 1117 Usage("--dex-location arguments do not match --dex-file arguments"); 1118 } 1119 1120 if (zip_fd != -1 && zip_location.empty()) { 1121 Usage("--zip-location should be supplied with --zip-fd"); 1122 } 1123 1124 if (boot_image_option.empty()) { 1125 if (image_base == 0) { 1126 Usage("Non-zero --base not specified"); 1127 } 1128 } 1129 1130 std::string oat_stripped(oat_filename); 1131 std::string oat_unstripped; 1132 if (!oat_symbols.empty()) { 1133 oat_unstripped += oat_symbols; 1134 } else { 1135 oat_unstripped += oat_filename; 1136 } 1137 1138 if (compiler_filter_string == nullptr) { 1139 if (instruction_set == kMips) { 1140 // TODO: fix compiler for Mips. 1141 compiler_filter_string = "interpret-only"; 1142 } else if (image) { 1143 compiler_filter_string = "speed"; 1144 } else { 1145#if ART_SMALL_MODE 1146 compiler_filter_string = "interpret-only"; 1147#else 1148 compiler_filter_string = "speed"; 1149#endif 1150 } 1151 } 1152 CHECK(compiler_filter_string != nullptr); 1153 CompilerOptions::CompilerFilter compiler_filter = CompilerOptions::kDefaultCompilerFilter; 1154 if (strcmp(compiler_filter_string, "verify-none") == 0) { 1155 compiler_filter = CompilerOptions::kVerifyNone; 1156 } else if (strcmp(compiler_filter_string, "interpret-only") == 0) { 1157 compiler_filter = CompilerOptions::kInterpretOnly; 1158 } else if (strcmp(compiler_filter_string, "space") == 0) { 1159 compiler_filter = CompilerOptions::kSpace; 1160 } else if (strcmp(compiler_filter_string, "balanced") == 0) { 1161 compiler_filter = CompilerOptions::kBalanced; 1162 } else if (strcmp(compiler_filter_string, "speed") == 0) { 1163 compiler_filter = CompilerOptions::kSpeed; 1164 } else if (strcmp(compiler_filter_string, "everything") == 0) { 1165 compiler_filter = CompilerOptions::kEverything; 1166 } else { 1167 Usage("Unknown --compiler-filter value %s", compiler_filter_string); 1168 } 1169 1170 CheckExplicitCheckOptions(instruction_set, &explicit_null_checks, &explicit_so_checks, 1171 &explicit_suspend_checks); 1172 1173 CompilerOptions compiler_options(compiler_filter, 1174 huge_method_threshold, 1175 large_method_threshold, 1176 small_method_threshold, 1177 tiny_method_threshold, 1178 num_dex_methods_threshold, 1179 generate_gdb_information, 1180 top_k_profile_threshold, 1181 include_debug_symbols, 1182 explicit_null_checks, 1183 explicit_so_checks, 1184 explicit_suspend_checks 1185#ifdef ART_SEA_IR_MODE 1186 , compiler_options.sea_ir_ = true; 1187#endif 1188 ); // NOLINT(whitespace/parens) 1189 1190 // Done with usage checks, enable watchdog if requested 1191 WatchDog watch_dog(watch_dog_enabled); 1192 1193 // Check early that the result of compilation can be written 1194 std::unique_ptr<File> oat_file; 1195 bool create_file = !oat_unstripped.empty(); // as opposed to using open file descriptor 1196 if (create_file) { 1197 oat_file.reset(OS::CreateEmptyFile(oat_unstripped.c_str())); 1198 if (oat_location.empty()) { 1199 oat_location = oat_filename; 1200 } 1201 } else { 1202 oat_file.reset(new File(oat_fd, oat_location)); 1203 oat_file->DisableAutoClose(); 1204 } 1205 if (oat_file.get() == nullptr) { 1206 PLOG(ERROR) << "Failed to create oat file: " << oat_location; 1207 return EXIT_FAILURE; 1208 } 1209 if (create_file && fchmod(oat_file->Fd(), 0644) != 0) { 1210 PLOG(ERROR) << "Failed to make oat file world readable: " << oat_location; 1211 return EXIT_FAILURE; 1212 } 1213 1214 timings.StartSplit("dex2oat Setup"); 1215 LOG(INFO) << CommandLine(); 1216 1217 Runtime::Options runtime_options; 1218 std::vector<const DexFile*> boot_class_path; 1219 if (boot_image_option.empty()) { 1220 size_t failure_count = OpenDexFiles(dex_filenames, dex_locations, boot_class_path); 1221 if (failure_count > 0) { 1222 LOG(ERROR) << "Failed to open some dex files: " << failure_count; 1223 return EXIT_FAILURE; 1224 } 1225 runtime_options.push_back(std::make_pair("bootclasspath", &boot_class_path)); 1226 } else { 1227 runtime_options.push_back(std::make_pair(boot_image_option.c_str(), nullptr)); 1228 } 1229 for (size_t i = 0; i < runtime_args.size(); i++) { 1230 runtime_options.push_back(std::make_pair(runtime_args[i], nullptr)); 1231 } 1232 1233 VerificationResults verification_results(&compiler_options); 1234 DexFileToMethodInlinerMap method_inliner_map; 1235 CompilerCallbacksImpl callbacks(&verification_results, &method_inliner_map); 1236 runtime_options.push_back(std::make_pair("compilercallbacks", &callbacks)); 1237 runtime_options.push_back( 1238 std::make_pair("imageinstructionset", 1239 reinterpret_cast<const void*>(GetInstructionSetString(instruction_set)))); 1240 1241 Dex2Oat* p_dex2oat; 1242 if (!Dex2Oat::Create(&p_dex2oat, 1243 runtime_options, 1244 compiler_options, 1245 compiler_kind, 1246 instruction_set, 1247 instruction_set_features, 1248 &verification_results, 1249 &method_inliner_map, 1250 thread_count)) { 1251 LOG(ERROR) << "Failed to create dex2oat"; 1252 return EXIT_FAILURE; 1253 } 1254 std::unique_ptr<Dex2Oat> dex2oat(p_dex2oat); 1255 1256 // TODO: Not sure whether it's a good idea to allow anything else but the runtime option in 1257 // this case at all, as we'll have to throw away produced code for a mismatch. 1258 if (!has_explicit_checks_options) { 1259 if (instruction_set == kRuntimeISA) { 1260 Runtime* runtime = Runtime::Current(); 1261 compiler_options.SetExplicitNullChecks(runtime->ExplicitNullChecks()); 1262 compiler_options.SetExplicitStackOverflowChecks(runtime->ExplicitStackOverflowChecks()); 1263 compiler_options.SetExplicitSuspendChecks(runtime->ExplicitSuspendChecks()); 1264 } 1265 } 1266 1267 // Runtime::Create acquired the mutator_lock_ that is normally given away when we Runtime::Start, 1268 // give it away now so that we don't starve GC. 1269 Thread* self = Thread::Current(); 1270 self->TransitionFromRunnableToSuspended(kNative); 1271 // If we're doing the image, override the compiler filter to force full compilation. Must be 1272 // done ahead of WellKnownClasses::Init that causes verification. Note: doesn't force 1273 // compilation of class initializers. 1274 // Whilst we're in native take the opportunity to initialize well known classes. 1275 WellKnownClasses::Init(self->GetJniEnv()); 1276 1277 // If --image-classes was specified, calculate the full list of classes to include in the image 1278 std::unique_ptr<CompilerDriver::DescriptorSet> image_classes(nullptr); 1279 if (image_classes_filename != nullptr) { 1280 std::string error_msg; 1281 if (image_classes_zip_filename != nullptr) { 1282 image_classes.reset(dex2oat->ReadImageClassesFromZip(image_classes_zip_filename, 1283 image_classes_filename, 1284 &error_msg)); 1285 } else { 1286 image_classes.reset(dex2oat->ReadImageClassesFromFile(image_classes_filename)); 1287 } 1288 if (image_classes.get() == nullptr) { 1289 LOG(ERROR) << "Failed to create list of image classes from '" << image_classes_filename << 1290 "': " << error_msg; 1291 return EXIT_FAILURE; 1292 } 1293 } else if (image) { 1294 image_classes.reset(new CompilerDriver::DescriptorSet); 1295 } 1296 1297 std::vector<const DexFile*> dex_files; 1298 if (boot_image_option.empty()) { 1299 dex_files = Runtime::Current()->GetClassLinker()->GetBootClassPath(); 1300 } else { 1301 if (dex_filenames.empty()) { 1302 ATRACE_BEGIN("Opening zip archive from file descriptor"); 1303 std::string error_msg; 1304 std::unique_ptr<ZipArchive> zip_archive(ZipArchive::OpenFromFd(zip_fd, zip_location.c_str(), 1305 &error_msg)); 1306 if (zip_archive.get() == nullptr) { 1307 LOG(ERROR) << "Failed to open zip from file descriptor for '" << zip_location << "': " 1308 << error_msg; 1309 return EXIT_FAILURE; 1310 } 1311 const DexFile* dex_file = DexFile::Open(*zip_archive.get(), zip_location, &error_msg); 1312 if (dex_file == nullptr) { 1313 LOG(ERROR) << "Failed to open dex from file descriptor for zip file '" << zip_location 1314 << "': " << error_msg; 1315 return EXIT_FAILURE; 1316 } 1317 dex_files.push_back(dex_file); 1318 ATRACE_END(); 1319 } else { 1320 size_t failure_count = OpenDexFiles(dex_filenames, dex_locations, dex_files); 1321 if (failure_count > 0) { 1322 LOG(ERROR) << "Failed to open some dex files: " << failure_count; 1323 return EXIT_FAILURE; 1324 } 1325 } 1326 1327 const bool kSaveDexInput = false; 1328 if (kSaveDexInput) { 1329 for (size_t i = 0; i < dex_files.size(); ++i) { 1330 const DexFile* dex_file = dex_files[i]; 1331 std::string tmp_file_name(StringPrintf("/data/local/tmp/dex2oat.%d.%zd.dex", getpid(), i)); 1332 std::unique_ptr<File> tmp_file(OS::CreateEmptyFile(tmp_file_name.c_str())); 1333 if (tmp_file.get() == nullptr) { 1334 PLOG(ERROR) << "Failed to open file " << tmp_file_name 1335 << ". Try: adb shell chmod 777 /data/local/tmp"; 1336 continue; 1337 } 1338 tmp_file->WriteFully(dex_file->Begin(), dex_file->Size()); 1339 LOG(INFO) << "Wrote input to " << tmp_file_name; 1340 } 1341 } 1342 } 1343 // Ensure opened dex files are writable for dex-to-dex transformations. 1344 for (const auto& dex_file : dex_files) { 1345 if (!dex_file->EnableWrite()) { 1346 PLOG(ERROR) << "Failed to make .dex file writeable '" << dex_file->GetLocation() << "'\n"; 1347 } 1348 } 1349 1350 /* 1351 * If we're not in interpret-only or verify-none mode, go ahead and compile small applications. 1352 * Don't bother to check if we're doing the image. 1353 */ 1354 if (!image && compiler_options.IsCompilationEnabled()) { 1355 size_t num_methods = 0; 1356 for (size_t i = 0; i != dex_files.size(); ++i) { 1357 const DexFile* dex_file = dex_files[i]; 1358 CHECK(dex_file != nullptr); 1359 num_methods += dex_file->NumMethodIds(); 1360 } 1361 if (num_methods <= compiler_options.GetNumDexMethodsThreshold()) { 1362 compiler_options.SetCompilerFilter(CompilerOptions::kSpeed); 1363 VLOG(compiler) << "Below method threshold, compiling anyways"; 1364 } 1365 } 1366 1367 std::unique_ptr<const CompilerDriver> compiler(dex2oat->CreateOatFile(boot_image_option, 1368 android_root, 1369 is_host, 1370 dex_files, 1371 oat_file.get(), 1372 bitcode_filename, 1373 image, 1374 image_classes, 1375 dump_stats, 1376 dump_passes, 1377 timings, 1378 compiler_phases_timings, 1379 profile_file)); 1380 1381 if (compiler.get() == nullptr) { 1382 LOG(ERROR) << "Failed to create oat file: " << oat_location; 1383 return EXIT_FAILURE; 1384 } 1385 1386 VLOG(compiler) << "Oat file written successfully (unstripped): " << oat_location; 1387 1388 // Notes on the interleaving of creating the image and oat file to 1389 // ensure the references between the two are correct. 1390 // 1391 // Currently we have a memory layout that looks something like this: 1392 // 1393 // +--------------+ 1394 // | image | 1395 // +--------------+ 1396 // | boot oat | 1397 // +--------------+ 1398 // | alloc spaces | 1399 // +--------------+ 1400 // 1401 // There are several constraints on the loading of the image and boot.oat. 1402 // 1403 // 1. The image is expected to be loaded at an absolute address and 1404 // contains Objects with absolute pointers within the image. 1405 // 1406 // 2. There are absolute pointers from Methods in the image to their 1407 // code in the oat. 1408 // 1409 // 3. There are absolute pointers from the code in the oat to Methods 1410 // in the image. 1411 // 1412 // 4. There are absolute pointers from code in the oat to other code 1413 // in the oat. 1414 // 1415 // To get this all correct, we go through several steps. 1416 // 1417 // 1. We have already created that oat file above with 1418 // CreateOatFile. Originally this was just our own proprietary file 1419 // but now it is contained within an ELF dynamic object (aka an .so 1420 // file). The Compiler returned by CreateOatFile provides 1421 // PatchInformation for references to oat code and Methods that need 1422 // to be update once we know where the oat file will be located 1423 // after the image. 1424 // 1425 // 2. We create the image file. It needs to know where the oat file 1426 // will be loaded after itself. Originally when oat file was simply 1427 // memory mapped so we could predict where its contents were based 1428 // on the file size. Now that it is an ELF file, we need to inspect 1429 // the ELF file to understand the in memory segment layout including 1430 // where the oat header is located within. ImageWriter's 1431 // PatchOatCodeAndMethods uses the PatchInformation from the 1432 // Compiler to touch up absolute references in the oat file. 1433 // 1434 // 3. We fixup the ELF program headers so that dlopen will try to 1435 // load the .so at the desired location at runtime by offsetting the 1436 // Elf32_Phdr.p_vaddr values by the desired base address. 1437 // 1438 if (image) { 1439 timings.NewSplit("dex2oat ImageWriter"); 1440 bool image_creation_success = dex2oat->CreateImageFile(image_filename, 1441 image_base, 1442 oat_unstripped, 1443 oat_location, 1444 *compiler.get()); 1445 if (!image_creation_success) { 1446 return EXIT_FAILURE; 1447 } 1448 VLOG(compiler) << "Image written successfully: " << image_filename; 1449 } 1450 1451 if (is_host) { 1452 if (dump_timing || (dump_slow_timing && timings.GetTotalNs() > MsToNs(1000))) { 1453 LOG(INFO) << Dumpable<TimingLogger>(timings); 1454 } 1455 if (dump_passes) { 1456 LOG(INFO) << Dumpable<CumulativeLogger>(*compiler.get()->GetTimingsLogger()); 1457 } 1458 return EXIT_SUCCESS; 1459 } 1460 1461 // If we don't want to strip in place, copy from unstripped location to stripped location. 1462 // We need to strip after image creation because FixupElf needs to use .strtab. 1463 if (oat_unstripped != oat_stripped) { 1464 timings.NewSplit("dex2oat OatFile copy"); 1465 oat_file.reset(); 1466 std::unique_ptr<File> in(OS::OpenFileForReading(oat_unstripped.c_str())); 1467 std::unique_ptr<File> out(OS::CreateEmptyFile(oat_stripped.c_str())); 1468 size_t buffer_size = 8192; 1469 std::unique_ptr<uint8_t> buffer(new uint8_t[buffer_size]); 1470 while (true) { 1471 int bytes_read = TEMP_FAILURE_RETRY(read(in->Fd(), buffer.get(), buffer_size)); 1472 if (bytes_read <= 0) { 1473 break; 1474 } 1475 bool write_ok = out->WriteFully(buffer.get(), bytes_read); 1476 CHECK(write_ok); 1477 } 1478 oat_file.reset(out.release()); 1479 VLOG(compiler) << "Oat file copied successfully (stripped): " << oat_stripped; 1480 } 1481 1482#if ART_USE_PORTABLE_COMPILER // We currently only generate symbols on Portable 1483 if (!compiler_options.GetIncludeDebugSymbols()) { 1484 timings.NewSplit("dex2oat ElfStripper"); 1485 // Strip unneeded sections for target 1486 off_t seek_actual = lseek(oat_file->Fd(), 0, SEEK_SET); 1487 CHECK_EQ(0, seek_actual); 1488 std::string error_msg; 1489 CHECK(ElfStripper::Strip(oat_file.get(), &error_msg)) << error_msg; 1490 1491 1492 // We wrote the oat file successfully, and want to keep it. 1493 VLOG(compiler) << "Oat file written successfully (stripped): " << oat_location; 1494 } else { 1495 VLOG(compiler) << "Oat file written successfully without stripping: " << oat_location; 1496 } 1497#endif // ART_USE_PORTABLE_COMPILER 1498 1499 timings.EndSplit(); 1500 1501 if (dump_timing || (dump_slow_timing && timings.GetTotalNs() > MsToNs(1000))) { 1502 LOG(INFO) << Dumpable<TimingLogger>(timings); 1503 } 1504 if (dump_passes) { 1505 LOG(INFO) << Dumpable<CumulativeLogger>(compiler_phases_timings); 1506 } 1507 1508 // Everything was successfully written, do an explicit exit here to avoid running Runtime 1509 // destructors that take time (bug 10645725) unless we're a debug build or running on valgrind. 1510 if (!kIsDebugBuild && (RUNNING_ON_VALGRIND == 0)) { 1511 dex2oat->LogCompletionTime(); 1512 exit(EXIT_SUCCESS); 1513 } 1514 1515 return EXIT_SUCCESS; 1516} // NOLINT(readability/fn_size) 1517} // namespace art 1518 1519int main(int argc, char** argv) { 1520 return art::dex2oat(argc, argv); 1521} 1522