dex2oat.cc revision 794ad76e8d5b5b9132819d5b08a0570e27615644
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#define ATRACE_TAG ATRACE_TAG_DALVIK 34#include <cutils/trace.h> 35 36#include "arch/instruction_set_features.h" 37#include "arch/mips/instruction_set_features_mips.h" 38#include "base/dumpable.h" 39#include "base/macros.h" 40#include "base/stl_util.h" 41#include "base/stringpiece.h" 42#include "base/timing_logger.h" 43#include "base/unix_file/fd_file.h" 44#include "class_linker.h" 45#include "compiler.h" 46#include "compiler_callbacks.h" 47#include "dex_file-inl.h" 48#include "dex/pass_manager.h" 49#include "dex/verification_results.h" 50#include "dex/quick_compiler_callbacks.h" 51#include "dex/quick/dex_file_to_method_inliner_map.h" 52#include "driver/compiler_driver.h" 53#include "driver/compiler_options.h" 54#include "elf_file.h" 55#include "elf_writer.h" 56#include "gc/space/image_space.h" 57#include "gc/space/space-inl.h" 58#include "image_writer.h" 59#include "leb128.h" 60#include "mirror/art_method-inl.h" 61#include "mirror/class-inl.h" 62#include "mirror/class_loader.h" 63#include "mirror/object-inl.h" 64#include "mirror/object_array-inl.h" 65#include "oat_writer.h" 66#include "os.h" 67#include "runtime.h" 68#include "ScopedLocalRef.h" 69#include "scoped_thread_state_change.h" 70#include "utils.h" 71#include "vector_output_stream.h" 72#include "well_known_classes.h" 73#include "zip_archive.h" 74 75namespace art { 76 77static int original_argc; 78static char** original_argv; 79 80static std::string CommandLine() { 81 std::vector<std::string> command; 82 for (int i = 0; i < original_argc; ++i) { 83 command.push_back(original_argv[i]); 84 } 85 return Join(command, ' '); 86} 87 88static void UsageErrorV(const char* fmt, va_list ap) { 89 std::string error; 90 StringAppendV(&error, fmt, ap); 91 LOG(ERROR) << error; 92} 93 94static void UsageError(const char* fmt, ...) { 95 va_list ap; 96 va_start(ap, fmt); 97 UsageErrorV(fmt, ap); 98 va_end(ap); 99} 100 101NO_RETURN static void Usage(const char* fmt, ...) { 102 va_list ap; 103 va_start(ap, fmt); 104 UsageErrorV(fmt, ap); 105 va_end(ap); 106 107 UsageError("Command: %s", CommandLine().c_str()); 108 109 UsageError("Usage: dex2oat [options]..."); 110 UsageError(""); 111 UsageError(" --dex-file=<dex-file>: specifies a .dex file to compile."); 112 UsageError(" Example: --dex-file=/system/framework/core.jar"); 113 UsageError(""); 114 UsageError(" --zip-fd=<file-descriptor>: specifies a file descriptor of a zip file"); 115 UsageError(" containing a classes.dex file to compile."); 116 UsageError(" Example: --zip-fd=5"); 117 UsageError(""); 118 UsageError(" --zip-location=<zip-location>: specifies a symbolic name for the file"); 119 UsageError(" corresponding to the file descriptor specified by --zip-fd."); 120 UsageError(" Example: --zip-location=/system/app/Calculator.apk"); 121 UsageError(""); 122 UsageError(" --oat-file=<file.oat>: specifies the oat output destination via a filename."); 123 UsageError(" Example: --oat-file=/system/framework/boot.oat"); 124 UsageError(""); 125 UsageError(" --oat-fd=<number>: specifies the oat output destination via a file descriptor."); 126 UsageError(" Example: --oat-fd=6"); 127 UsageError(""); 128 UsageError(" --oat-location=<oat-name>: specifies a symbolic name for the file corresponding"); 129 UsageError(" to the file descriptor specified by --oat-fd."); 130 UsageError(" Example: --oat-location=/data/dalvik-cache/system@app@Calculator.apk.oat"); 131 UsageError(""); 132 UsageError(" --oat-symbols=<file.oat>: specifies the oat output destination with full symbols."); 133 UsageError(" Example: --oat-symbols=/symbols/system/framework/boot.oat"); 134 UsageError(""); 135 UsageError(" --image=<file.art>: specifies the output image filename."); 136 UsageError(" Example: --image=/system/framework/boot.art"); 137 UsageError(""); 138 UsageError(" --image-classes=<classname-file>: specifies classes to include in an image."); 139 UsageError(" Example: --image=frameworks/base/preloaded-classes"); 140 UsageError(""); 141 UsageError(" --base=<hex-address>: specifies the base address when creating a boot image."); 142 UsageError(" Example: --base=0x50000000"); 143 UsageError(""); 144 UsageError(" --boot-image=<file.art>: provide the image file for the boot class path."); 145 UsageError(" Example: --boot-image=/system/framework/boot.art"); 146 UsageError(" Default: $ANDROID_ROOT/system/framework/boot.art"); 147 UsageError(""); 148 UsageError(" --android-root=<path>: used to locate libraries for portable linking."); 149 UsageError(" Example: --android-root=out/host/linux-x86"); 150 UsageError(" Default: $ANDROID_ROOT"); 151 UsageError(""); 152 UsageError(" --instruction-set=(arm|arm64|mips|mips64|x86|x86_64): compile for a particular"); 153 UsageError(" instruction set."); 154 UsageError(" Example: --instruction-set=x86"); 155 UsageError(" Default: arm"); 156 UsageError(""); 157 UsageError(" --instruction-set-features=...,: Specify instruction set features"); 158 UsageError(" Example: --instruction-set-features=div"); 159 UsageError(" Default: default"); 160 UsageError(""); 161 UsageError(" --compile-pic: Force indirect use of code, methods, and classes"); 162 UsageError(" Default: disabled"); 163 UsageError(""); 164 UsageError(" --compiler-backend=(Quick|Optimizing): select compiler backend"); 165 UsageError(" set."); 166 UsageError(" Example: --compiler-backend=Optimizing"); 167 if (kUseOptimizingCompiler) { 168 UsageError(" Default: Optimizing"); 169 } else { 170 UsageError(" Default: Quick"); 171 } 172 UsageError(""); 173 UsageError(" --compiler-filter=" 174 "(verify-none" 175 "|interpret-only" 176 "|space" 177 "|balanced" 178 "|speed" 179 "|everything" 180 "|time):"); 181 UsageError(" select compiler filter."); 182 UsageError(" Example: --compiler-filter=everything"); 183#if ART_SMALL_MODE 184 UsageError(" Default: interpret-only"); 185#else 186 UsageError(" Default: speed"); 187#endif 188 UsageError(""); 189 UsageError(" --huge-method-max=<method-instruction-count>: the threshold size for a huge"); 190 UsageError(" method for compiler filter tuning."); 191 UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold); 192 UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold); 193 UsageError(""); 194 UsageError(" --huge-method-max=<method-instruction-count>: threshold size for a huge"); 195 UsageError(" method for compiler filter tuning."); 196 UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold); 197 UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold); 198 UsageError(""); 199 UsageError(" --large-method-max=<method-instruction-count>: threshold size for a large"); 200 UsageError(" method for compiler filter tuning."); 201 UsageError(" Example: --large-method-max=%d", CompilerOptions::kDefaultLargeMethodThreshold); 202 UsageError(" Default: %d", CompilerOptions::kDefaultLargeMethodThreshold); 203 UsageError(""); 204 UsageError(" --small-method-max=<method-instruction-count>: threshold size for a small"); 205 UsageError(" method for compiler filter tuning."); 206 UsageError(" Example: --small-method-max=%d", CompilerOptions::kDefaultSmallMethodThreshold); 207 UsageError(" Default: %d", CompilerOptions::kDefaultSmallMethodThreshold); 208 UsageError(""); 209 UsageError(" --tiny-method-max=<method-instruction-count>: threshold size for a tiny"); 210 UsageError(" method for compiler filter tuning."); 211 UsageError(" Example: --tiny-method-max=%d", CompilerOptions::kDefaultTinyMethodThreshold); 212 UsageError(" Default: %d", CompilerOptions::kDefaultTinyMethodThreshold); 213 UsageError(""); 214 UsageError(" --num-dex-methods=<method-count>: threshold size for a small dex file for"); 215 UsageError(" compiler filter tuning. If the input has fewer than this many methods"); 216 UsageError(" and the filter is not interpret-only or verify-none, overrides the"); 217 UsageError(" filter to use speed"); 218 UsageError(" Example: --num-dex-method=%d", CompilerOptions::kDefaultNumDexMethodsThreshold); 219 UsageError(" Default: %d", CompilerOptions::kDefaultNumDexMethodsThreshold); 220 UsageError(""); 221 UsageError(" --dump-timing: display a breakdown of where time was spent"); 222 UsageError(""); 223 UsageError(" --include-patch-information: Include patching information so the generated code"); 224 UsageError(" can have its base address moved without full recompilation."); 225 UsageError(""); 226 UsageError(" --no-include-patch-information: Do not include patching information."); 227 UsageError(""); 228 UsageError(" --include-debug-symbols: Include ELF symbols in this oat file"); 229 UsageError(""); 230 UsageError(" --no-include-debug-symbols: Do not include ELF symbols in this oat file"); 231 UsageError(""); 232 UsageError(" --runtime-arg <argument>: used to specify various arguments for the runtime,"); 233 UsageError(" such as initial heap size, maximum heap size, and verbose output."); 234 UsageError(" Use a separate --runtime-arg switch for each argument."); 235 UsageError(" Example: --runtime-arg -Xms256m"); 236 UsageError(""); 237 UsageError(" --profile-file=<filename>: specify profiler output file to use for compilation."); 238 UsageError(""); 239 UsageError(" --print-pass-names: print a list of pass names"); 240 UsageError(""); 241 UsageError(" --disable-passes=<pass-names>: disable one or more passes separated by comma."); 242 UsageError(" Example: --disable-passes=UseCount,BBOptimizations"); 243 UsageError(""); 244 UsageError(" --print-pass-options: print a list of passes that have configurable options along " 245 "with the setting."); 246 UsageError(" Will print default if no overridden setting exists."); 247 UsageError(""); 248 UsageError(" --pass-options=Pass1Name:Pass1OptionName:Pass1Option#," 249 "Pass2Name:Pass2OptionName:Pass2Option#"); 250 UsageError(" Used to specify a pass specific option. The setting itself must be integer."); 251 UsageError(" Separator used between options is a comma."); 252 UsageError(""); 253 UsageError(" --swap-file=<file-name>: specifies a file to use for swap."); 254 UsageError(" Example: --swap-file=/data/tmp/swap.001"); 255 UsageError(""); 256 UsageError(" --swap-fd=<file-descriptor>: specifies a file to use for swap (by descriptor)."); 257 UsageError(" Example: --swap-fd=10"); 258 UsageError(""); 259 std::cerr << "See log for usage error information\n"; 260 exit(EXIT_FAILURE); 261} 262 263// The primary goal of the watchdog is to prevent stuck build servers 264// during development when fatal aborts lead to a cascade of failures 265// that result in a deadlock. 266class WatchDog { 267// WatchDog defines its own CHECK_PTHREAD_CALL to avoid using LOG which uses locks 268#undef CHECK_PTHREAD_CALL 269#define CHECK_WATCH_DOG_PTHREAD_CALL(call, args, what) \ 270 do { \ 271 int rc = call args; \ 272 if (rc != 0) { \ 273 errno = rc; \ 274 std::string message(# call); \ 275 message += " failed for "; \ 276 message += reason; \ 277 Fatal(message); \ 278 } \ 279 } while (false) 280 281 public: 282 explicit WatchDog(bool is_watch_dog_enabled) { 283 is_watch_dog_enabled_ = is_watch_dog_enabled; 284 if (!is_watch_dog_enabled_) { 285 return; 286 } 287 shutting_down_ = false; 288 const char* reason = "dex2oat watch dog thread startup"; 289 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_init, (&mutex_, nullptr), reason); 290 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_init, (&cond_, nullptr), reason); 291 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_init, (&attr_), reason); 292 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_create, (&pthread_, &attr_, &CallBack, this), reason); 293 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_destroy, (&attr_), reason); 294 } 295 ~WatchDog() { 296 if (!is_watch_dog_enabled_) { 297 return; 298 } 299 const char* reason = "dex2oat watch dog thread shutdown"; 300 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 301 shutting_down_ = true; 302 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_signal, (&cond_), reason); 303 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 304 305 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_join, (pthread_, nullptr), reason); 306 307 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_destroy, (&cond_), reason); 308 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_destroy, (&mutex_), reason); 309 } 310 311 private: 312 static void* CallBack(void* arg) { 313 WatchDog* self = reinterpret_cast<WatchDog*>(arg); 314 ::art::SetThreadName("dex2oat watch dog"); 315 self->Wait(); 316 return nullptr; 317 } 318 319 static void Message(char severity, const std::string& message) { 320 // TODO: Remove when we switch to LOG when we can guarantee it won't prevent shutdown in error 321 // cases. 322 fprintf(stderr, "dex2oat%s %c %d %d %s\n", 323 kIsDebugBuild ? "d" : "", 324 severity, 325 getpid(), 326 GetTid(), 327 message.c_str()); 328 } 329 330 NO_RETURN static void Fatal(const std::string& message) { 331 Message('F', message); 332 exit(1); 333 } 334 335 void Wait() { 336 // TODO: tune the multiplier for GC verification, the following is just to make the timeout 337 // large. 338 int64_t multiplier = kVerifyObjectSupport > kVerifyObjectModeFast ? 100 : 1; 339 timespec timeout_ts; 340 InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogTimeoutSeconds * 1000, 0, &timeout_ts); 341 const char* reason = "dex2oat watch dog thread waiting"; 342 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 343 while (!shutting_down_) { 344 int rc = TEMP_FAILURE_RETRY(pthread_cond_timedwait(&cond_, &mutex_, &timeout_ts)); 345 if (rc == ETIMEDOUT) { 346 Fatal(StringPrintf("dex2oat did not finish after %d seconds", kWatchDogTimeoutSeconds)); 347 } else if (rc != 0) { 348 std::string message(StringPrintf("pthread_cond_timedwait failed: %s", 349 strerror(errno))); 350 Fatal(message.c_str()); 351 } 352 } 353 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 354 } 355 356 // When setting timeouts, keep in mind that the build server may not be as fast as your desktop. 357 // Debug builds are slower so they have larger timeouts. 358 static const unsigned int kSlowdownFactor = kIsDebugBuild ? 5U : 1U; 359 360 // 6 minutes scaled by kSlowdownFactor. 361 static const unsigned int kWatchDogTimeoutSeconds = kSlowdownFactor * 6 * 60; 362 363 bool is_watch_dog_enabled_; 364 bool shutting_down_; 365 // TODO: Switch to Mutex when we can guarantee it won't prevent shutdown in error cases. 366 pthread_mutex_t mutex_; 367 pthread_cond_t cond_; 368 pthread_attr_t attr_; 369 pthread_t pthread_; 370}; 371 372static void ParseStringAfterChar(const std::string& s, char c, std::string* parsed_value) { 373 std::string::size_type colon = s.find(c); 374 if (colon == std::string::npos) { 375 Usage("Missing char %c in option %s\n", c, s.c_str()); 376 } 377 // Add one to remove the char we were trimming until. 378 *parsed_value = s.substr(colon + 1); 379} 380 381static void ParseDouble(const std::string& option, char after_char, double min, double max, 382 double* parsed_value) { 383 std::string substring; 384 ParseStringAfterChar(option, after_char, &substring); 385 bool sane_val = true; 386 double value; 387 if (false) { 388 // TODO: this doesn't seem to work on the emulator. b/15114595 389 std::stringstream iss(substring); 390 iss >> value; 391 // Ensure that we have a value, there was no cruft after it and it satisfies a sensible range. 392 sane_val = iss.eof() && (value >= min) && (value <= max); 393 } else { 394 char* end = nullptr; 395 value = strtod(substring.c_str(), &end); 396 sane_val = *end == '\0' && value >= min && value <= max; 397 } 398 if (!sane_val) { 399 Usage("Invalid double value %s for option %s\n", substring.c_str(), option.c_str()); 400 } 401 *parsed_value = value; 402} 403 404static constexpr size_t kMinDexFilesForSwap = 2; 405static constexpr size_t kMinDexFileCumulativeSizeForSwap = 20 * MB; 406 407static bool UseSwap(bool is_image, std::vector<const DexFile*>& dex_files) { 408 if (is_image) { 409 // Don't use swap, we know generation should succeed, and we don't want to slow it down. 410 return false; 411 } 412 if (dex_files.size() < kMinDexFilesForSwap) { 413 // If there are less dex files than the threshold, assume it's gonna be fine. 414 return false; 415 } 416 size_t dex_files_size = 0; 417 for (const auto* dex_file : dex_files) { 418 dex_files_size += dex_file->GetHeader().file_size_; 419 } 420 return dex_files_size >= kMinDexFileCumulativeSizeForSwap; 421} 422 423class Dex2Oat FINAL { 424 public: 425 explicit Dex2Oat(TimingLogger* timings) : 426 compiler_kind_(kUseOptimizingCompiler ? Compiler::kOptimizing : Compiler::kQuick), 427 instruction_set_(kRuntimeISA), 428 // Take the default set of instruction features from the build. 429 method_inliner_map_(), 430 runtime_(nullptr), 431 thread_count_(sysconf(_SC_NPROCESSORS_CONF)), 432 start_ns_(NanoTime()), 433 oat_fd_(-1), 434 zip_fd_(-1), 435 image_base_(0U), 436 image_classes_zip_filename_(nullptr), 437 image_classes_filename_(nullptr), 438 compiled_classes_zip_filename_(nullptr), 439 compiled_classes_filename_(nullptr), 440 image_(false), 441 is_host_(false), 442 dump_stats_(false), 443 dump_passes_(false), 444 dump_timing_(false), 445 dump_slow_timing_(kIsDebugBuild), 446 swap_fd_(-1), 447 timings_(timings) {} 448 449 ~Dex2Oat() { 450 // Free opened dex files before deleting the runtime_, because ~DexFile 451 // uses MemMap, which is shut down by ~Runtime. 452 class_path_files_.clear(); 453 opened_dex_files_.clear(); 454 455 // Log completion time before deleting the runtime_, because this accesses 456 // the runtime. 457 LogCompletionTime(); 458 459 if (kIsDebugBuild || (RUNNING_ON_VALGRIND != 0)) { 460 delete runtime_; // See field declaration for why this is manual. 461 } 462 } 463 464 // Parse the arguments from the command line. In case of an unrecognized option or impossible 465 // values/combinations, a usage error will be displayed and exit() is called. Thus, if the method 466 // returns, arguments have been successfully parsed. 467 void ParseArgs(int argc, char** argv) { 468 original_argc = argc; 469 original_argv = argv; 470 471 InitLogging(argv); 472 473 // Skip over argv[0]. 474 argv++; 475 argc--; 476 477 if (argc == 0) { 478 Usage("No arguments specified"); 479 } 480 481 std::string oat_symbols; 482 std::string boot_image_filename; 483 const char* compiler_filter_string = nullptr; 484 bool compile_pic = false; 485 int huge_method_threshold = CompilerOptions::kDefaultHugeMethodThreshold; 486 int large_method_threshold = CompilerOptions::kDefaultLargeMethodThreshold; 487 int small_method_threshold = CompilerOptions::kDefaultSmallMethodThreshold; 488 int tiny_method_threshold = CompilerOptions::kDefaultTinyMethodThreshold; 489 int num_dex_methods_threshold = CompilerOptions::kDefaultNumDexMethodsThreshold; 490 491 // Profile file to use 492 double top_k_profile_threshold = CompilerOptions::kDefaultTopKProfileThreshold; 493 494 bool include_patch_information = CompilerOptions::kDefaultIncludePatchInformation; 495 bool include_debug_symbols = kIsDebugBuild; 496 bool watch_dog_enabled = true; 497 bool generate_gdb_information = kIsDebugBuild; 498 499 PassManagerOptions pass_manager_options; 500 501 std::string error_msg; 502 503 for (int i = 0; i < argc; i++) { 504 const StringPiece option(argv[i]); 505 const bool log_options = false; 506 if (log_options) { 507 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 508 } 509 if (option.starts_with("--dex-file=")) { 510 dex_filenames_.push_back(option.substr(strlen("--dex-file=")).data()); 511 } else if (option.starts_with("--dex-location=")) { 512 dex_locations_.push_back(option.substr(strlen("--dex-location=")).data()); 513 } else if (option.starts_with("--zip-fd=")) { 514 const char* zip_fd_str = option.substr(strlen("--zip-fd=")).data(); 515 if (!ParseInt(zip_fd_str, &zip_fd_)) { 516 Usage("Failed to parse --zip-fd argument '%s' as an integer", zip_fd_str); 517 } 518 if (zip_fd_ < 0) { 519 Usage("--zip-fd passed a negative value %d", zip_fd_); 520 } 521 } else if (option.starts_with("--zip-location=")) { 522 zip_location_ = option.substr(strlen("--zip-location=")).data(); 523 } else if (option.starts_with("--oat-file=")) { 524 oat_filename_ = option.substr(strlen("--oat-file=")).data(); 525 } else if (option.starts_with("--oat-symbols=")) { 526 oat_symbols = option.substr(strlen("--oat-symbols=")).data(); 527 } else if (option.starts_with("--oat-fd=")) { 528 const char* oat_fd_str = option.substr(strlen("--oat-fd=")).data(); 529 if (!ParseInt(oat_fd_str, &oat_fd_)) { 530 Usage("Failed to parse --oat-fd argument '%s' as an integer", oat_fd_str); 531 } 532 if (oat_fd_ < 0) { 533 Usage("--oat-fd passed a negative value %d", oat_fd_); 534 } 535 } else if (option == "--watch-dog") { 536 watch_dog_enabled = true; 537 } else if (option == "--no-watch-dog") { 538 watch_dog_enabled = false; 539 } else if (option == "--gen-gdb-info") { 540 generate_gdb_information = true; 541 // Debug symbols are needed for gdb information. 542 include_debug_symbols = true; 543 } else if (option == "--no-gen-gdb-info") { 544 generate_gdb_information = false; 545 } else if (option.starts_with("-j")) { 546 const char* thread_count_str = option.substr(strlen("-j")).data(); 547 if (!ParseUint(thread_count_str, &thread_count_)) { 548 Usage("Failed to parse -j argument '%s' as an integer", thread_count_str); 549 } 550 } else if (option.starts_with("--oat-location=")) { 551 oat_location_ = option.substr(strlen("--oat-location=")).data(); 552 } else if (option.starts_with("--image=")) { 553 image_filename_ = option.substr(strlen("--image=")).data(); 554 } else if (option.starts_with("--image-classes=")) { 555 image_classes_filename_ = option.substr(strlen("--image-classes=")).data(); 556 } else if (option.starts_with("--image-classes-zip=")) { 557 image_classes_zip_filename_ = option.substr(strlen("--image-classes-zip=")).data(); 558 } else if (option.starts_with("--compiled-classes=")) { 559 compiled_classes_filename_ = option.substr(strlen("--compiled-classes=")).data(); 560 } else if (option.starts_with("--compiled-classes-zip=")) { 561 compiled_classes_zip_filename_ = option.substr(strlen("--compiled-classes-zip=")).data(); 562 } else if (option.starts_with("--base=")) { 563 const char* image_base_str = option.substr(strlen("--base=")).data(); 564 char* end; 565 image_base_ = strtoul(image_base_str, &end, 16); 566 if (end == image_base_str || *end != '\0') { 567 Usage("Failed to parse hexadecimal value for option %s", option.data()); 568 } 569 } else if (option.starts_with("--boot-image=")) { 570 boot_image_filename = option.substr(strlen("--boot-image=")).data(); 571 } else if (option.starts_with("--android-root=")) { 572 android_root_ = option.substr(strlen("--android-root=")).data(); 573 } else if (option.starts_with("--instruction-set=")) { 574 StringPiece instruction_set_str = option.substr(strlen("--instruction-set=")).data(); 575 // StringPiece is not necessarily zero-terminated, so need to make a copy and ensure it. 576 std::unique_ptr<char[]> buf(new char[instruction_set_str.length() + 1]); 577 strncpy(buf.get(), instruction_set_str.data(), instruction_set_str.length()); 578 buf.get()[instruction_set_str.length()] = 0; 579 instruction_set_ = GetInstructionSetFromString(buf.get()); 580 // arm actually means thumb2. 581 if (instruction_set_ == InstructionSet::kArm) { 582 instruction_set_ = InstructionSet::kThumb2; 583 } 584 } else if (option.starts_with("--instruction-set-variant=")) { 585 StringPiece str = option.substr(strlen("--instruction-set-variant=")).data(); 586 instruction_set_features_.reset( 587 InstructionSetFeatures::FromVariant(instruction_set_, str.as_string(), &error_msg)); 588 if (instruction_set_features_.get() == nullptr) { 589 Usage("%s", error_msg.c_str()); 590 } 591 } else if (option.starts_with("--instruction-set-features=")) { 592 StringPiece str = option.substr(strlen("--instruction-set-features=")).data(); 593 if (instruction_set_features_.get() == nullptr) { 594 instruction_set_features_.reset( 595 InstructionSetFeatures::FromVariant(instruction_set_, "default", &error_msg)); 596 if (instruction_set_features_.get() == nullptr) { 597 Usage("Problem initializing default instruction set features variant: %s", 598 error_msg.c_str()); 599 } 600 } 601 instruction_set_features_.reset( 602 instruction_set_features_->AddFeaturesFromString(str.as_string(), &error_msg)); 603 if (instruction_set_features_.get() == nullptr) { 604 Usage("Error parsing '%s': %s", option.data(), error_msg.c_str()); 605 } 606 } else if (option.starts_with("--compiler-backend=")) { 607 StringPiece backend_str = option.substr(strlen("--compiler-backend=")).data(); 608 if (backend_str == "Quick") { 609 compiler_kind_ = Compiler::kQuick; 610 } else if (backend_str == "Optimizing") { 611 compiler_kind_ = Compiler::kOptimizing; 612 } else { 613 Usage("Unknown compiler backend: %s", backend_str.data()); 614 } 615 } else if (option.starts_with("--compiler-filter=")) { 616 compiler_filter_string = option.substr(strlen("--compiler-filter=")).data(); 617 } else if (option == "--compile-pic") { 618 compile_pic = true; 619 } else if (option.starts_with("--huge-method-max=")) { 620 const char* threshold = option.substr(strlen("--huge-method-max=")).data(); 621 if (!ParseInt(threshold, &huge_method_threshold)) { 622 Usage("Failed to parse --huge-method-max '%s' as an integer", threshold); 623 } 624 if (huge_method_threshold < 0) { 625 Usage("--huge-method-max passed a negative value %s", huge_method_threshold); 626 } 627 } else if (option.starts_with("--large-method-max=")) { 628 const char* threshold = option.substr(strlen("--large-method-max=")).data(); 629 if (!ParseInt(threshold, &large_method_threshold)) { 630 Usage("Failed to parse --large-method-max '%s' as an integer", threshold); 631 } 632 if (large_method_threshold < 0) { 633 Usage("--large-method-max passed a negative value %s", large_method_threshold); 634 } 635 } else if (option.starts_with("--small-method-max=")) { 636 const char* threshold = option.substr(strlen("--small-method-max=")).data(); 637 if (!ParseInt(threshold, &small_method_threshold)) { 638 Usage("Failed to parse --small-method-max '%s' as an integer", threshold); 639 } 640 if (small_method_threshold < 0) { 641 Usage("--small-method-max passed a negative value %s", small_method_threshold); 642 } 643 } else if (option.starts_with("--tiny-method-max=")) { 644 const char* threshold = option.substr(strlen("--tiny-method-max=")).data(); 645 if (!ParseInt(threshold, &tiny_method_threshold)) { 646 Usage("Failed to parse --tiny-method-max '%s' as an integer", threshold); 647 } 648 if (tiny_method_threshold < 0) { 649 Usage("--tiny-method-max passed a negative value %s", tiny_method_threshold); 650 } 651 } else if (option.starts_with("--num-dex-methods=")) { 652 const char* threshold = option.substr(strlen("--num-dex-methods=")).data(); 653 if (!ParseInt(threshold, &num_dex_methods_threshold)) { 654 Usage("Failed to parse --num-dex-methods '%s' as an integer", threshold); 655 } 656 if (num_dex_methods_threshold < 0) { 657 Usage("--num-dex-methods passed a negative value %s", num_dex_methods_threshold); 658 } 659 } else if (option == "--host") { 660 is_host_ = true; 661 } else if (option == "--runtime-arg") { 662 if (++i >= argc) { 663 Usage("Missing required argument for --runtime-arg"); 664 } 665 if (log_options) { 666 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 667 } 668 runtime_args_.push_back(argv[i]); 669 } else if (option == "--dump-timing") { 670 dump_timing_ = true; 671 } else if (option == "--dump-passes") { 672 dump_passes_ = true; 673 } else if (option.starts_with("--dump-cfg=")) { 674 dump_cfg_file_name_ = option.substr(strlen("--dump-cfg=")).data(); 675 } else if (option == "--dump-stats") { 676 dump_stats_ = true; 677 } else if (option == "--include-debug-symbols" || option == "--no-strip-symbols") { 678 include_debug_symbols = true; 679 } else if (option == "--no-include-debug-symbols" || option == "--strip-symbols") { 680 include_debug_symbols = false; 681 generate_gdb_information = false; // Depends on debug symbols, see above. 682 } else if (option.starts_with("--profile-file=")) { 683 profile_file_ = option.substr(strlen("--profile-file=")).data(); 684 VLOG(compiler) << "dex2oat: profile file is " << profile_file_; 685 } else if (option == "--no-profile-file") { 686 // No profile 687 } else if (option.starts_with("--top-k-profile-threshold=")) { 688 ParseDouble(option.data(), '=', 0.0, 100.0, &top_k_profile_threshold); 689 } else if (option == "--print-pass-names") { 690 pass_manager_options.SetPrintPassNames(true); 691 } else if (option.starts_with("--disable-passes=")) { 692 const std::string disable_passes = option.substr(strlen("--disable-passes=")).data(); 693 pass_manager_options.SetDisablePassList(disable_passes); 694 } else if (option.starts_with("--print-passes=")) { 695 const std::string print_passes = option.substr(strlen("--print-passes=")).data(); 696 pass_manager_options.SetPrintPassList(print_passes); 697 } else if (option == "--print-all-passes") { 698 pass_manager_options.SetPrintAllPasses(); 699 } else if (option.starts_with("--dump-cfg-passes=")) { 700 const std::string dump_passes_string = option.substr(strlen("--dump-cfg-passes=")).data(); 701 pass_manager_options.SetDumpPassList(dump_passes_string); 702 } else if (option == "--print-pass-options") { 703 pass_manager_options.SetPrintPassOptions(true); 704 } else if (option.starts_with("--pass-options=")) { 705 const std::string options = option.substr(strlen("--pass-options=")).data(); 706 pass_manager_options.SetOverriddenPassOptions(options); 707 } else if (option == "--include-patch-information") { 708 include_patch_information = true; 709 } else if (option == "--no-include-patch-information") { 710 include_patch_information = false; 711 } else if (option.starts_with("--verbose-methods=")) { 712 // TODO: rather than switch off compiler logging, make all VLOG(compiler) messages 713 // conditional on having verbost methods. 714 gLogVerbosity.compiler = false; 715 Split(option.substr(strlen("--verbose-methods=")).ToString(), ',', &verbose_methods_); 716 } else if (option.starts_with("--dump-init-failures=")) { 717 std::string file_name = option.substr(strlen("--dump-init-failures=")).data(); 718 init_failure_output_.reset(new std::ofstream(file_name)); 719 if (init_failure_output_.get() == nullptr) { 720 LOG(ERROR) << "Failed to allocate ofstream"; 721 } else if (init_failure_output_->fail()) { 722 LOG(ERROR) << "Failed to open " << file_name << " for writing the initialization " 723 << "failures."; 724 init_failure_output_.reset(); 725 } 726 } else if (option.starts_with("--swap-file=")) { 727 swap_file_name_ = option.substr(strlen("--swap-file=")).data(); 728 } else if (option.starts_with("--swap-fd=")) { 729 const char* swap_fd_str = option.substr(strlen("--swap-fd=")).data(); 730 if (!ParseInt(swap_fd_str, &swap_fd_)) { 731 Usage("Failed to parse --swap-fd argument '%s' as an integer", swap_fd_str); 732 } 733 if (swap_fd_ < 0) { 734 Usage("--swap-fd passed a negative value %d", swap_fd_); 735 } 736 } else { 737 Usage("Unknown argument %s", option.data()); 738 } 739 } 740 741 if (compiler_kind_ == Compiler::kOptimizing) { 742 // Optimizing only supports PIC mode. 743 compile_pic = true; 744 } 745 746 if (oat_filename_.empty() && oat_fd_ == -1) { 747 Usage("Output must be supplied with either --oat-file or --oat-fd"); 748 } 749 750 if (!oat_filename_.empty() && oat_fd_ != -1) { 751 Usage("--oat-file should not be used with --oat-fd"); 752 } 753 754 if (!oat_symbols.empty() && oat_fd_ != -1) { 755 Usage("--oat-symbols should not be used with --oat-fd"); 756 } 757 758 if (!oat_symbols.empty() && is_host_) { 759 Usage("--oat-symbols should not be used with --host"); 760 } 761 762 if (oat_fd_ != -1 && !image_filename_.empty()) { 763 Usage("--oat-fd should not be used with --image"); 764 } 765 766 if (android_root_.empty()) { 767 const char* android_root_env_var = getenv("ANDROID_ROOT"); 768 if (android_root_env_var == nullptr) { 769 Usage("--android-root unspecified and ANDROID_ROOT not set"); 770 } 771 android_root_ += android_root_env_var; 772 } 773 774 image_ = (!image_filename_.empty()); 775 if (!image_ && boot_image_filename.empty()) { 776 boot_image_filename += android_root_; 777 boot_image_filename += "/framework/boot.art"; 778 } 779 if (!boot_image_filename.empty()) { 780 boot_image_option_ += "-Ximage:"; 781 boot_image_option_ += boot_image_filename; 782 } 783 784 if (image_classes_filename_ != nullptr && !image_) { 785 Usage("--image-classes should only be used with --image"); 786 } 787 788 if (image_classes_filename_ != nullptr && !boot_image_option_.empty()) { 789 Usage("--image-classes should not be used with --boot-image"); 790 } 791 792 if (image_classes_zip_filename_ != nullptr && image_classes_filename_ == nullptr) { 793 Usage("--image-classes-zip should be used with --image-classes"); 794 } 795 796 if (compiled_classes_filename_ != nullptr && !image_) { 797 Usage("--compiled-classes should only be used with --image"); 798 } 799 800 if (compiled_classes_filename_ != nullptr && !boot_image_option_.empty()) { 801 Usage("--compiled-classes should not be used with --boot-image"); 802 } 803 804 if (compiled_classes_zip_filename_ != nullptr && compiled_classes_filename_ == nullptr) { 805 Usage("--compiled-classes-zip should be used with --compiled-classes"); 806 } 807 808 if (dex_filenames_.empty() && zip_fd_ == -1) { 809 Usage("Input must be supplied with either --dex-file or --zip-fd"); 810 } 811 812 if (!dex_filenames_.empty() && zip_fd_ != -1) { 813 Usage("--dex-file should not be used with --zip-fd"); 814 } 815 816 if (!dex_filenames_.empty() && !zip_location_.empty()) { 817 Usage("--dex-file should not be used with --zip-location"); 818 } 819 820 if (dex_locations_.empty()) { 821 for (const char* dex_file_name : dex_filenames_) { 822 dex_locations_.push_back(dex_file_name); 823 } 824 } else if (dex_locations_.size() != dex_filenames_.size()) { 825 Usage("--dex-location arguments do not match --dex-file arguments"); 826 } 827 828 if (zip_fd_ != -1 && zip_location_.empty()) { 829 Usage("--zip-location should be supplied with --zip-fd"); 830 } 831 832 if (boot_image_option_.empty()) { 833 if (image_base_ == 0) { 834 Usage("Non-zero --base not specified"); 835 } 836 } 837 838 oat_stripped_ = oat_filename_; 839 if (!oat_symbols.empty()) { 840 oat_unstripped_ = oat_symbols; 841 } else { 842 oat_unstripped_ = oat_filename_; 843 } 844 845 // If no instruction set feature was given, use the default one for the target 846 // instruction set. 847 if (instruction_set_features_.get() == nullptr) { 848 instruction_set_features_.reset( 849 InstructionSetFeatures::FromVariant(instruction_set_, "default", &error_msg)); 850 if (instruction_set_features_.get() == nullptr) { 851 Usage("Problem initializing default instruction set features variant: %s", 852 error_msg.c_str()); 853 } 854 } 855 856 if (instruction_set_ == kRuntimeISA) { 857 std::unique_ptr<const InstructionSetFeatures> runtime_features( 858 InstructionSetFeatures::FromCppDefines()); 859 if (!instruction_set_features_->Equals(runtime_features.get())) { 860 LOG(WARNING) << "Mismatch between dex2oat instruction set features (" 861 << *instruction_set_features_ << ") and those of dex2oat executable (" 862 << *runtime_features <<") for the command line:\n" 863 << CommandLine(); 864 } 865 } 866 867 if (compiler_filter_string == nullptr) { 868 if (instruction_set_ == kMips && 869 reinterpret_cast<const MipsInstructionSetFeatures*>(instruction_set_features_.get())-> 870 IsR6()) { 871 // For R6, only interpreter mode is working. 872 // TODO: fix compiler for Mips32r6. 873 compiler_filter_string = "interpret-only"; 874 } else if (instruction_set_ == kMips64) { 875 // For Mips64, can only compile in interpreter mode. 876 // TODO: fix compiler for Mips64. 877 compiler_filter_string = "interpret-only"; 878 } else if (image_) { 879 compiler_filter_string = "speed"; 880 } else { 881 // TODO: Migrate SMALL mode to command line option. 882 #if ART_SMALL_MODE 883 compiler_filter_string = "interpret-only"; 884 #else 885 compiler_filter_string = "speed"; 886 #endif 887 } 888 } 889 CHECK(compiler_filter_string != nullptr); 890 CompilerOptions::CompilerFilter compiler_filter = CompilerOptions::kDefaultCompilerFilter; 891 if (strcmp(compiler_filter_string, "verify-none") == 0) { 892 compiler_filter = CompilerOptions::kVerifyNone; 893 } else if (strcmp(compiler_filter_string, "interpret-only") == 0) { 894 compiler_filter = CompilerOptions::kInterpretOnly; 895 } else if (strcmp(compiler_filter_string, "space") == 0) { 896 compiler_filter = CompilerOptions::kSpace; 897 } else if (strcmp(compiler_filter_string, "balanced") == 0) { 898 compiler_filter = CompilerOptions::kBalanced; 899 } else if (strcmp(compiler_filter_string, "speed") == 0) { 900 compiler_filter = CompilerOptions::kSpeed; 901 } else if (strcmp(compiler_filter_string, "everything") == 0) { 902 compiler_filter = CompilerOptions::kEverything; 903 } else if (strcmp(compiler_filter_string, "time") == 0) { 904 compiler_filter = CompilerOptions::kTime; 905 } else { 906 Usage("Unknown --compiler-filter value %s", compiler_filter_string); 907 } 908 909 // Checks are all explicit until we know the architecture. 910 bool implicit_null_checks = false; 911 bool implicit_so_checks = false; 912 bool implicit_suspend_checks = false; 913 // Set the compilation target's implicit checks options. 914 switch (instruction_set_) { 915 case kArm: 916 case kThumb2: 917 case kArm64: 918 case kX86: 919 case kX86_64: 920 implicit_null_checks = true; 921 implicit_so_checks = true; 922 break; 923 924 default: 925 // Defaults are correct. 926 break; 927 } 928 929 compiler_options_.reset(new CompilerOptions(compiler_filter, 930 huge_method_threshold, 931 large_method_threshold, 932 small_method_threshold, 933 tiny_method_threshold, 934 num_dex_methods_threshold, 935 generate_gdb_information, 936 include_patch_information, 937 top_k_profile_threshold, 938 include_debug_symbols, 939 implicit_null_checks, 940 implicit_so_checks, 941 implicit_suspend_checks, 942 compile_pic, 943 verbose_methods_.empty() ? 944 nullptr : 945 &verbose_methods_, 946 new PassManagerOptions(pass_manager_options), 947 init_failure_output_.get())); 948 949 // Done with usage checks, enable watchdog if requested 950 if (watch_dog_enabled) { 951 watchdog_.reset(new WatchDog(true)); 952 } 953 954 // Fill some values into the key-value store for the oat header. 955 key_value_store_.reset(new SafeMap<std::string, std::string>()); 956 957 // Insert some compiler things. 958 { 959 std::ostringstream oss; 960 for (int i = 0; i < argc; ++i) { 961 if (i > 0) { 962 oss << ' '; 963 } 964 oss << argv[i]; 965 } 966 key_value_store_->Put(OatHeader::kDex2OatCmdLineKey, oss.str()); 967 oss.str(""); // Reset. 968 oss << kRuntimeISA; 969 key_value_store_->Put(OatHeader::kDex2OatHostKey, oss.str()); 970 key_value_store_->Put(OatHeader::kPicKey, compile_pic ? "true" : "false"); 971 } 972 } 973 974 // Check whether the oat output file is writable, and open it for later. Also open a swap file, 975 // if a name is given. 976 bool OpenFile() { 977 bool create_file = !oat_unstripped_.empty(); // as opposed to using open file descriptor 978 if (create_file) { 979 oat_file_.reset(OS::CreateEmptyFile(oat_unstripped_.c_str())); 980 if (oat_location_.empty()) { 981 oat_location_ = oat_filename_; 982 } 983 } else { 984 oat_file_.reset(new File(oat_fd_, oat_location_, true)); 985 oat_file_->DisableAutoClose(); 986 if (oat_file_->SetLength(0) != 0) { 987 PLOG(WARNING) << "Truncating oat file " << oat_location_ << " failed."; 988 } 989 } 990 if (oat_file_.get() == nullptr) { 991 PLOG(ERROR) << "Failed to create oat file: " << oat_location_; 992 return false; 993 } 994 if (create_file && fchmod(oat_file_->Fd(), 0644) != 0) { 995 PLOG(ERROR) << "Failed to make oat file world readable: " << oat_location_; 996 oat_file_->Erase(); 997 return false; 998 } 999 1000 // Swap file handling. 1001 // 1002 // If the swap fd is not -1, we assume this is the file descriptor of an open but unlinked file 1003 // that we can use for swap. 1004 // 1005 // If the swap fd is -1 and we have a swap-file string, open the given file as a swap file. We 1006 // will immediately unlink to satisfy the swap fd assumption. 1007 if (swap_fd_ == -1 && !swap_file_name_.empty()) { 1008 std::unique_ptr<File> swap_file(OS::CreateEmptyFile(swap_file_name_.c_str())); 1009 if (swap_file.get() == nullptr) { 1010 PLOG(ERROR) << "Failed to create swap file: " << swap_file_name_; 1011 return false; 1012 } 1013 swap_fd_ = swap_file->Fd(); 1014 swap_file->MarkUnchecked(); // We don't we to track this, it will be unlinked immediately. 1015 swap_file->DisableAutoClose(); // We'll handle it ourselves, the File object will be 1016 // released immediately. 1017 unlink(swap_file_name_.c_str()); 1018 } 1019 1020 return true; 1021 } 1022 1023 void EraseOatFile() { 1024 DCHECK(oat_file_.get() != nullptr); 1025 oat_file_->Erase(); 1026 oat_file_.reset(); 1027 } 1028 1029 // Set up the environment for compilation. Includes starting the runtime and loading/opening the 1030 // boot class path. 1031 bool Setup() { 1032 TimingLogger::ScopedTiming t("dex2oat Setup", timings_); 1033 RuntimeOptions runtime_options; 1034 art::MemMap::Init(); // For ZipEntry::ExtractToMemMap. 1035 if (boot_image_option_.empty()) { 1036 std::string boot_class_path = "-Xbootclasspath:"; 1037 boot_class_path += Join(dex_filenames_, ':'); 1038 runtime_options.push_back(std::make_pair(boot_class_path, nullptr)); 1039 std::string boot_class_path_locations = "-Xbootclasspath-locations:"; 1040 boot_class_path_locations += Join(dex_locations_, ':'); 1041 runtime_options.push_back(std::make_pair(boot_class_path_locations, nullptr)); 1042 } else { 1043 runtime_options.push_back(std::make_pair(boot_image_option_, nullptr)); 1044 } 1045 for (size_t i = 0; i < runtime_args_.size(); i++) { 1046 runtime_options.push_back(std::make_pair(runtime_args_[i], nullptr)); 1047 } 1048 1049 verification_results_.reset(new VerificationResults(compiler_options_.get())); 1050 callbacks_.reset(new QuickCompilerCallbacks(verification_results_.get(), &method_inliner_map_)); 1051 runtime_options.push_back(std::make_pair("compilercallbacks", callbacks_.get())); 1052 runtime_options.push_back( 1053 std::make_pair("imageinstructionset", GetInstructionSetString(instruction_set_))); 1054 1055 if (!CreateRuntime(runtime_options)) { 1056 return false; 1057 } 1058 1059 // Runtime::Create acquired the mutator_lock_ that is normally given away when we 1060 // Runtime::Start, give it away now so that we don't starve GC. 1061 Thread* self = Thread::Current(); 1062 self->TransitionFromRunnableToSuspended(kNative); 1063 // If we're doing the image, override the compiler filter to force full compilation. Must be 1064 // done ahead of WellKnownClasses::Init that causes verification. Note: doesn't force 1065 // compilation of class initializers. 1066 // Whilst we're in native take the opportunity to initialize well known classes. 1067 WellKnownClasses::Init(self->GetJniEnv()); 1068 1069 // If --image-classes was specified, calculate the full list of classes to include in the image 1070 if (image_classes_filename_ != nullptr) { 1071 std::string error_msg; 1072 if (image_classes_zip_filename_ != nullptr) { 1073 image_classes_.reset(ReadImageClassesFromZip(image_classes_zip_filename_, 1074 image_classes_filename_, 1075 &error_msg)); 1076 } else { 1077 image_classes_.reset(ReadImageClassesFromFile(image_classes_filename_)); 1078 } 1079 if (image_classes_.get() == nullptr) { 1080 LOG(ERROR) << "Failed to create list of image classes from '" << image_classes_filename_ << 1081 "': " << error_msg; 1082 return false; 1083 } 1084 } else if (image_) { 1085 image_classes_.reset(new std::set<std::string>); 1086 } 1087 // If --compiled-classes was specified, calculate the full list of classes to compile in the 1088 // image. 1089 if (compiled_classes_filename_ != nullptr) { 1090 std::string error_msg; 1091 if (compiled_classes_zip_filename_ != nullptr) { 1092 compiled_classes_.reset(ReadImageClassesFromZip(compiled_classes_zip_filename_, 1093 compiled_classes_filename_, 1094 &error_msg)); 1095 } else { 1096 compiled_classes_.reset(ReadImageClassesFromFile(compiled_classes_filename_)); 1097 } 1098 if (compiled_classes_.get() == nullptr) { 1099 LOG(ERROR) << "Failed to create list of compiled classes from '" 1100 << compiled_classes_filename_ << "': " << error_msg; 1101 return false; 1102 } 1103 } else if (image_) { 1104 compiled_classes_.reset(nullptr); // By default compile everything. 1105 } 1106 1107 if (boot_image_option_.empty()) { 1108 dex_files_ = Runtime::Current()->GetClassLinker()->GetBootClassPath(); 1109 } else { 1110 if (dex_filenames_.empty()) { 1111 ATRACE_BEGIN("Opening zip archive from file descriptor"); 1112 std::string error_msg; 1113 std::unique_ptr<ZipArchive> zip_archive(ZipArchive::OpenFromFd(zip_fd_, 1114 zip_location_.c_str(), 1115 &error_msg)); 1116 if (zip_archive.get() == nullptr) { 1117 LOG(ERROR) << "Failed to open zip from file descriptor for '" << zip_location_ << "': " 1118 << error_msg; 1119 return false; 1120 } 1121 if (!DexFile::OpenFromZip(*zip_archive.get(), zip_location_, &error_msg, &opened_dex_files_)) { 1122 LOG(ERROR) << "Failed to open dex from file descriptor for zip file '" << zip_location_ 1123 << "': " << error_msg; 1124 return false; 1125 } 1126 for (auto& dex_file : opened_dex_files_) { 1127 dex_files_.push_back(dex_file.get()); 1128 } 1129 ATRACE_END(); 1130 } else { 1131 size_t failure_count = OpenDexFiles(dex_filenames_, dex_locations_, &opened_dex_files_); 1132 if (failure_count > 0) { 1133 LOG(ERROR) << "Failed to open some dex files: " << failure_count; 1134 return false; 1135 } 1136 for (auto& dex_file : opened_dex_files_) { 1137 dex_files_.push_back(dex_file.get()); 1138 } 1139 } 1140 1141 constexpr bool kSaveDexInput = false; 1142 if (kSaveDexInput) { 1143 for (size_t i = 0; i < dex_files_.size(); ++i) { 1144 const DexFile* dex_file = dex_files_[i]; 1145 std::string tmp_file_name(StringPrintf("/data/local/tmp/dex2oat.%d.%zd.dex", 1146 getpid(), i)); 1147 std::unique_ptr<File> tmp_file(OS::CreateEmptyFile(tmp_file_name.c_str())); 1148 if (tmp_file.get() == nullptr) { 1149 PLOG(ERROR) << "Failed to open file " << tmp_file_name 1150 << ". Try: adb shell chmod 777 /data/local/tmp"; 1151 continue; 1152 } 1153 // This is just dumping files for debugging. Ignore errors, and leave remnants. 1154 UNUSED(tmp_file->WriteFully(dex_file->Begin(), dex_file->Size())); 1155 UNUSED(tmp_file->Flush()); 1156 UNUSED(tmp_file->Close()); 1157 LOG(INFO) << "Wrote input to " << tmp_file_name; 1158 } 1159 } 1160 } 1161 // Ensure opened dex files are writable for dex-to-dex transformations. 1162 for (const auto& dex_file : dex_files_) { 1163 if (!dex_file->EnableWrite()) { 1164 PLOG(ERROR) << "Failed to make .dex file writeable '" << dex_file->GetLocation() << "'\n"; 1165 } 1166 } 1167 1168 // If we use a swap file, ensure we are above the threshold to make it necessary. 1169 if (swap_fd_ != -1) { 1170 if (!UseSwap(image_, dex_files_)) { 1171 close(swap_fd_); 1172 swap_fd_ = -1; 1173 LOG(INFO) << "Decided to run without swap."; 1174 } else { 1175 LOG(INFO) << "Accepted running with swap."; 1176 } 1177 } 1178 // Note that dex2oat won't close the swap_fd_. The compiler driver's swap space will do that. 1179 1180 /* 1181 * If we're not in interpret-only or verify-none mode, go ahead and compile small applications. 1182 * Don't bother to check if we're doing the image. 1183 */ 1184 if (!image_ && 1185 compiler_options_->IsCompilationEnabled() && 1186 compiler_kind_ == Compiler::kQuick) { 1187 size_t num_methods = 0; 1188 for (size_t i = 0; i != dex_files_.size(); ++i) { 1189 const DexFile* dex_file = dex_files_[i]; 1190 CHECK(dex_file != nullptr); 1191 num_methods += dex_file->NumMethodIds(); 1192 } 1193 if (num_methods <= compiler_options_->GetNumDexMethodsThreshold()) { 1194 compiler_options_->SetCompilerFilter(CompilerOptions::kSpeed); 1195 VLOG(compiler) << "Below method threshold, compiling anyways"; 1196 } 1197 } 1198 1199 return true; 1200 } 1201 1202 // Create and invoke the compiler driver. This will compile all the dex files. 1203 void Compile() { 1204 TimingLogger::ScopedTiming t("dex2oat Compile", timings_); 1205 compiler_phases_timings_.reset(new CumulativeLogger("compilation times")); 1206 1207 // Handle and ClassLoader creation needs to come after Runtime::Create 1208 jobject class_loader = nullptr; 1209 Thread* self = Thread::Current(); 1210 if (!boot_image_option_.empty()) { 1211 ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 1212 OpenClassPathFiles(runtime_->GetClassPathString(), dex_files_, &class_path_files_); 1213 ScopedObjectAccess soa(self); 1214 std::vector<const DexFile*> class_path_files(dex_files_); 1215 for (auto& class_path_file : class_path_files_) { 1216 class_path_files.push_back(class_path_file.get()); 1217 } 1218 1219 for (size_t i = 0; i < class_path_files.size(); i++) { 1220 class_linker->RegisterDexFile(*class_path_files[i]); 1221 } 1222 soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader); 1223 ScopedLocalRef<jobject> class_loader_local(soa.Env(), 1224 soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader)); 1225 class_loader = soa.Env()->NewGlobalRef(class_loader_local.get()); 1226 Runtime::Current()->SetCompileTimeClassPath(class_loader, class_path_files); 1227 } 1228 1229 driver_.reset(new CompilerDriver(compiler_options_.get(), 1230 verification_results_.get(), 1231 &method_inliner_map_, 1232 compiler_kind_, 1233 instruction_set_, 1234 instruction_set_features_.get(), 1235 image_, 1236 image_classes_.release(), 1237 compiled_classes_.release(), 1238 thread_count_, 1239 dump_stats_, 1240 dump_passes_, 1241 dump_cfg_file_name_, 1242 compiler_phases_timings_.get(), 1243 swap_fd_, 1244 profile_file_)); 1245 1246 driver_->CompileAll(class_loader, dex_files_, timings_); 1247 } 1248 1249 // Notes on the interleaving of creating the image and oat file to 1250 // ensure the references between the two are correct. 1251 // 1252 // Currently we have a memory layout that looks something like this: 1253 // 1254 // +--------------+ 1255 // | image | 1256 // +--------------+ 1257 // | boot oat | 1258 // +--------------+ 1259 // | alloc spaces | 1260 // +--------------+ 1261 // 1262 // There are several constraints on the loading of the image and boot.oat. 1263 // 1264 // 1. The image is expected to be loaded at an absolute address and 1265 // contains Objects with absolute pointers within the image. 1266 // 1267 // 2. There are absolute pointers from Methods in the image to their 1268 // code in the oat. 1269 // 1270 // 3. There are absolute pointers from the code in the oat to Methods 1271 // in the image. 1272 // 1273 // 4. There are absolute pointers from code in the oat to other code 1274 // in the oat. 1275 // 1276 // To get this all correct, we go through several steps. 1277 // 1278 // 1. We prepare offsets for all data in the oat file and calculate 1279 // the oat data size and code size. During this stage, we also set 1280 // oat code offsets in methods for use by the image writer. 1281 // 1282 // 2. We prepare offsets for the objects in the image and calculate 1283 // the image size. 1284 // 1285 // 3. We create the oat file. Originally this was just our own proprietary 1286 // file but now it is contained within an ELF dynamic object (aka an .so 1287 // file). Since we know the image size and oat data size and code size we 1288 // can prepare the ELF headers and we then know the ELF memory segment 1289 // layout and we can now resolve all references. The compiler provides 1290 // LinkerPatch information in each CompiledMethod and we resolve these, 1291 // using the layout information and image object locations provided by 1292 // image writer, as we're writing the method code. 1293 // 1294 // 4. We create the image file. It needs to know where the oat file 1295 // will be loaded after itself. Originally when oat file was simply 1296 // memory mapped so we could predict where its contents were based 1297 // on the file size. Now that it is an ELF file, we need to inspect 1298 // the ELF file to understand the in memory segment layout including 1299 // where the oat header is located within. 1300 // TODO: We could just remember this information from step 3. 1301 // 1302 // 5. We fixup the ELF program headers so that dlopen will try to 1303 // load the .so at the desired location at runtime by offsetting the 1304 // Elf32_Phdr.p_vaddr values by the desired base address. 1305 // TODO: Do this in step 3. We already know the layout there. 1306 // 1307 // Steps 1.-3. are done by the CreateOatFile() above, steps 4.-5. 1308 // are done by the CreateImageFile() below. 1309 1310 1311 // Write out the generated code part. Calls the OatWriter and ElfBuilder. Also prepares the 1312 // ImageWriter, if necessary. 1313 // Note: Flushing (and closing) the file is the caller's responsibility, except for the failure 1314 // case (when the file will be explicitly erased). 1315 bool CreateOatFile() { 1316 CHECK(key_value_store_.get() != nullptr); 1317 1318 TimingLogger::ScopedTiming t("dex2oat Oat", timings_); 1319 1320 std::unique_ptr<OatWriter> oat_writer; 1321 { 1322 TimingLogger::ScopedTiming t2("dex2oat OatWriter", timings_); 1323 std::string image_file_location; 1324 uint32_t image_file_location_oat_checksum = 0; 1325 uintptr_t image_file_location_oat_data_begin = 0; 1326 int32_t image_patch_delta = 0; 1327 if (image_) { 1328 PrepareImageWriter(image_base_); 1329 } else { 1330 TimingLogger::ScopedTiming t3("Loading image checksum", timings_); 1331 gc::space::ImageSpace* image_space = Runtime::Current()->GetHeap()->GetImageSpace(); 1332 image_file_location_oat_checksum = image_space->GetImageHeader().GetOatChecksum(); 1333 image_file_location_oat_data_begin = 1334 reinterpret_cast<uintptr_t>(image_space->GetImageHeader().GetOatDataBegin()); 1335 image_file_location = image_space->GetImageFilename(); 1336 image_patch_delta = image_space->GetImageHeader().GetPatchDelta(); 1337 } 1338 1339 if (!image_file_location.empty()) { 1340 key_value_store_->Put(OatHeader::kImageLocationKey, image_file_location); 1341 } 1342 1343 oat_writer.reset(new OatWriter(dex_files_, image_file_location_oat_checksum, 1344 image_file_location_oat_data_begin, 1345 image_patch_delta, 1346 driver_.get(), 1347 image_writer_.get(), 1348 timings_, 1349 key_value_store_.get())); 1350 } 1351 1352 if (image_) { 1353 // The OatWriter constructor has already updated offsets in methods and we need to 1354 // prepare method offsets in the image address space for direct method patching. 1355 TimingLogger::ScopedTiming t2("dex2oat Prepare image address space", timings_); 1356 if (!image_writer_->PrepareImageAddressSpace()) { 1357 LOG(ERROR) << "Failed to prepare image address space."; 1358 return false; 1359 } 1360 } 1361 1362 { 1363 TimingLogger::ScopedTiming t2("dex2oat Write ELF", timings_); 1364 if (!driver_->WriteElf(android_root_, is_host_, dex_files_, oat_writer.get(), 1365 oat_file_.get())) { 1366 LOG(ERROR) << "Failed to write ELF file " << oat_file_->GetPath(); 1367 return false; 1368 } 1369 } 1370 1371 VLOG(compiler) << "Oat file written successfully (unstripped): " << oat_location_; 1372 return true; 1373 } 1374 1375 // If we are compiling an image, invoke the image creation routine. Else just skip. 1376 bool HandleImage() { 1377 if (image_) { 1378 TimingLogger::ScopedTiming t("dex2oat ImageWriter", timings_); 1379 if (!CreateImageFile()) { 1380 return false; 1381 } 1382 VLOG(compiler) << "Image written successfully: " << image_filename_; 1383 } 1384 return true; 1385 } 1386 1387 // Create a copy from unstripped to stripped. 1388 bool CopyUnstrippedToStripped() { 1389 // If we don't want to strip in place, copy from unstripped location to stripped location. 1390 // We need to strip after image creation because FixupElf needs to use .strtab. 1391 if (oat_unstripped_ != oat_stripped_) { 1392 // If the oat file is still open, flush it. 1393 if (oat_file_.get() != nullptr && oat_file_->IsOpened()) { 1394 if (!FlushCloseOatFile()) { 1395 return false; 1396 } 1397 } 1398 1399 TimingLogger::ScopedTiming t("dex2oat OatFile copy", timings_); 1400 std::unique_ptr<File> in(OS::OpenFileForReading(oat_unstripped_.c_str())); 1401 std::unique_ptr<File> out(OS::CreateEmptyFile(oat_stripped_.c_str())); 1402 size_t buffer_size = 8192; 1403 std::unique_ptr<uint8_t[]> buffer(new uint8_t[buffer_size]); 1404 while (true) { 1405 int bytes_read = TEMP_FAILURE_RETRY(read(in->Fd(), buffer.get(), buffer_size)); 1406 if (bytes_read <= 0) { 1407 break; 1408 } 1409 bool write_ok = out->WriteFully(buffer.get(), bytes_read); 1410 CHECK(write_ok); 1411 } 1412 if (out->FlushCloseOrErase() != 0) { 1413 PLOG(ERROR) << "Failed to flush and close copied oat file: " << oat_stripped_; 1414 return false; 1415 } 1416 VLOG(compiler) << "Oat file copied successfully (stripped): " << oat_stripped_; 1417 } 1418 return true; 1419 } 1420 1421 bool FlushOatFile() { 1422 if (oat_file_.get() != nullptr) { 1423 TimingLogger::ScopedTiming t2("dex2oat Flush ELF", timings_); 1424 if (oat_file_->Flush() != 0) { 1425 PLOG(ERROR) << "Failed to flush oat file: " << oat_location_ << " / " 1426 << oat_filename_; 1427 oat_file_->Erase(); 1428 return false; 1429 } 1430 } 1431 return true; 1432 } 1433 1434 bool FlushCloseOatFile() { 1435 if (oat_file_.get() != nullptr) { 1436 std::unique_ptr<File> tmp(oat_file_.release()); 1437 if (tmp->FlushCloseOrErase() != 0) { 1438 PLOG(ERROR) << "Failed to flush and close oat file: " << oat_location_ << " / " 1439 << oat_filename_; 1440 return false; 1441 } 1442 } 1443 return true; 1444 } 1445 1446 void DumpTiming() { 1447 if (dump_timing_ || (dump_slow_timing_ && timings_->GetTotalNs() > MsToNs(1000))) { 1448 LOG(INFO) << Dumpable<TimingLogger>(*timings_); 1449 } 1450 if (dump_passes_) { 1451 LOG(INFO) << Dumpable<CumulativeLogger>(*driver_->GetTimingsLogger()); 1452 } 1453 } 1454 1455 CompilerOptions* GetCompilerOptions() const { 1456 return compiler_options_.get(); 1457 } 1458 1459 bool IsImage() const { 1460 return image_; 1461 } 1462 1463 bool IsHost() const { 1464 return is_host_; 1465 } 1466 1467 private: 1468 static size_t OpenDexFiles(const std::vector<const char*>& dex_filenames, 1469 const std::vector<const char*>& dex_locations, 1470 std::vector<std::unique_ptr<const DexFile>>* dex_files) { 1471 DCHECK(dex_files != nullptr) << "OpenDexFiles out-param is NULL"; 1472 size_t failure_count = 0; 1473 for (size_t i = 0; i < dex_filenames.size(); i++) { 1474 const char* dex_filename = dex_filenames[i]; 1475 const char* dex_location = dex_locations[i]; 1476 ATRACE_BEGIN(StringPrintf("Opening dex file '%s'", dex_filenames[i]).c_str()); 1477 std::string error_msg; 1478 if (!OS::FileExists(dex_filename)) { 1479 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 1480 continue; 1481 } 1482 if (!DexFile::Open(dex_filename, dex_location, &error_msg, dex_files)) { 1483 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 1484 ++failure_count; 1485 } 1486 ATRACE_END(); 1487 } 1488 return failure_count; 1489 } 1490 1491 // Returns true if dex_files has a dex with the named location. 1492 static bool DexFilesContains(const std::vector<const DexFile*>& dex_files, 1493 const std::string& location) { 1494 for (size_t i = 0; i < dex_files.size(); ++i) { 1495 if (dex_files[i]->GetLocation() == location) { 1496 return true; 1497 } 1498 } 1499 return false; 1500 } 1501 1502 // Appends to opened_dex_files any elements of class_path that dex_files 1503 // doesn't already contain. This will open those dex files as necessary. 1504 static void OpenClassPathFiles(const std::string& class_path, 1505 std::vector<const DexFile*> dex_files, 1506 std::vector<std::unique_ptr<const DexFile>>* opened_dex_files) { 1507 DCHECK(opened_dex_files != nullptr) << "OpenClassPathFiles out-param is NULL"; 1508 std::vector<std::string> parsed; 1509 Split(class_path, ':', &parsed); 1510 // Take Locks::mutator_lock_ so that lock ordering on the ClassLinker::dex_lock_ is maintained. 1511 ScopedObjectAccess soa(Thread::Current()); 1512 for (size_t i = 0; i < parsed.size(); ++i) { 1513 if (DexFilesContains(dex_files, parsed[i])) { 1514 continue; 1515 } 1516 std::string error_msg; 1517 if (!DexFile::Open(parsed[i].c_str(), parsed[i].c_str(), &error_msg, opened_dex_files)) { 1518 LOG(WARNING) << "Failed to open dex file '" << parsed[i] << "': " << error_msg; 1519 } 1520 } 1521 } 1522 1523 // Create a runtime necessary for compilation. 1524 bool CreateRuntime(const RuntimeOptions& runtime_options) 1525 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_) { 1526 if (!Runtime::Create(runtime_options, false)) { 1527 LOG(ERROR) << "Failed to create runtime"; 1528 return false; 1529 } 1530 Runtime* runtime = Runtime::Current(); 1531 runtime->SetInstructionSet(instruction_set_); 1532 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 1533 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 1534 if (!runtime->HasCalleeSaveMethod(type)) { 1535 runtime->SetCalleeSaveMethod(runtime->CreateCalleeSaveMethod(), type); 1536 } 1537 } 1538 runtime->GetClassLinker()->FixupDexCaches(runtime->GetResolutionMethod()); 1539 runtime->GetClassLinker()->RunRootClinits(); 1540 runtime_ = runtime; 1541 return true; 1542 } 1543 1544 void PrepareImageWriter(uintptr_t image_base) { 1545 image_writer_.reset(new ImageWriter(*driver_, image_base, compiler_options_->GetCompilePic())); 1546 } 1547 1548 // Let the ImageWriter write the image file. If we do not compile PIC, also fix up the oat file. 1549 bool CreateImageFile() 1550 LOCKS_EXCLUDED(Locks::mutator_lock_) { 1551 CHECK(image_writer_ != nullptr); 1552 if (!image_writer_->Write(image_filename_, oat_unstripped_, oat_location_)) { 1553 LOG(ERROR) << "Failed to create image file " << image_filename_; 1554 return false; 1555 } 1556 uintptr_t oat_data_begin = image_writer_->GetOatDataBegin(); 1557 1558 // Destroy ImageWriter before doing FixupElf. 1559 image_writer_.reset(); 1560 1561 // Do not fix up the ELF file if we are --compile-pic 1562 if (!compiler_options_->GetCompilePic()) { 1563 std::unique_ptr<File> oat_file(OS::OpenFileReadWrite(oat_unstripped_.c_str())); 1564 if (oat_file.get() == nullptr) { 1565 PLOG(ERROR) << "Failed to open ELF file: " << oat_unstripped_; 1566 return false; 1567 } 1568 1569 if (!ElfWriter::Fixup(oat_file.get(), oat_data_begin)) { 1570 oat_file->Erase(); 1571 LOG(ERROR) << "Failed to fixup ELF file " << oat_file->GetPath(); 1572 return false; 1573 } 1574 1575 if (oat_file->FlushCloseOrErase()) { 1576 PLOG(ERROR) << "Failed to flush and close fixed ELF file " << oat_file->GetPath(); 1577 return false; 1578 } 1579 } 1580 1581 return true; 1582 } 1583 1584 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 1585 static std::set<std::string>* ReadImageClassesFromFile(const char* image_classes_filename) { 1586 std::unique_ptr<std::ifstream> image_classes_file(new std::ifstream(image_classes_filename, 1587 std::ifstream::in)); 1588 if (image_classes_file.get() == nullptr) { 1589 LOG(ERROR) << "Failed to open image classes file " << image_classes_filename; 1590 return nullptr; 1591 } 1592 std::unique_ptr<std::set<std::string>> result(ReadImageClasses(*image_classes_file)); 1593 image_classes_file->close(); 1594 return result.release(); 1595 } 1596 1597 static std::set<std::string>* ReadImageClasses(std::istream& image_classes_stream) { 1598 std::unique_ptr<std::set<std::string>> image_classes(new std::set<std::string>); 1599 while (image_classes_stream.good()) { 1600 std::string dot; 1601 std::getline(image_classes_stream, dot); 1602 if (StartsWith(dot, "#") || dot.empty()) { 1603 continue; 1604 } 1605 std::string descriptor(DotToDescriptor(dot.c_str())); 1606 image_classes->insert(descriptor); 1607 } 1608 return image_classes.release(); 1609 } 1610 1611 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 1612 static std::set<std::string>* ReadImageClassesFromZip(const char* zip_filename, 1613 const char* image_classes_filename, 1614 std::string* error_msg) { 1615 std::unique_ptr<ZipArchive> zip_archive(ZipArchive::Open(zip_filename, error_msg)); 1616 if (zip_archive.get() == nullptr) { 1617 return nullptr; 1618 } 1619 std::unique_ptr<ZipEntry> zip_entry(zip_archive->Find(image_classes_filename, error_msg)); 1620 if (zip_entry.get() == nullptr) { 1621 *error_msg = StringPrintf("Failed to find '%s' within '%s': %s", image_classes_filename, 1622 zip_filename, error_msg->c_str()); 1623 return nullptr; 1624 } 1625 std::unique_ptr<MemMap> image_classes_file(zip_entry->ExtractToMemMap(zip_filename, 1626 image_classes_filename, 1627 error_msg)); 1628 if (image_classes_file.get() == nullptr) { 1629 *error_msg = StringPrintf("Failed to extract '%s' from '%s': %s", image_classes_filename, 1630 zip_filename, error_msg->c_str()); 1631 return nullptr; 1632 } 1633 const std::string image_classes_string(reinterpret_cast<char*>(image_classes_file->Begin()), 1634 image_classes_file->Size()); 1635 std::istringstream image_classes_stream(image_classes_string); 1636 return ReadImageClasses(image_classes_stream); 1637 } 1638 1639 void LogCompletionTime() { 1640 LOG(INFO) << "dex2oat took " << PrettyDuration(NanoTime() - start_ns_) 1641 << " (threads: " << thread_count_ << ") " 1642 << driver_->GetMemoryUsageString(kIsDebugBuild || VLOG_IS_ON(compiler)); 1643 } 1644 1645 std::unique_ptr<CompilerOptions> compiler_options_; 1646 Compiler::Kind compiler_kind_; 1647 1648 InstructionSet instruction_set_; 1649 std::unique_ptr<const InstructionSetFeatures> instruction_set_features_; 1650 1651 std::unique_ptr<SafeMap<std::string, std::string> > key_value_store_; 1652 1653 std::unique_ptr<VerificationResults> verification_results_; 1654 DexFileToMethodInlinerMap method_inliner_map_; 1655 std::unique_ptr<QuickCompilerCallbacks> callbacks_; 1656 1657 // Ownership for the class path files. 1658 std::vector<std::unique_ptr<const DexFile>> class_path_files_; 1659 1660 // Not a unique_ptr as we want to just exit on non-debug builds, not bringing the runtime down 1661 // in an orderly fashion. The destructor takes care of deleting this. 1662 Runtime* runtime_; 1663 1664 size_t thread_count_; 1665 uint64_t start_ns_; 1666 std::unique_ptr<WatchDog> watchdog_; 1667 std::unique_ptr<File> oat_file_; 1668 std::string oat_stripped_; 1669 std::string oat_unstripped_; 1670 std::string oat_location_; 1671 std::string oat_filename_; 1672 int oat_fd_; 1673 std::vector<const char*> dex_filenames_; 1674 std::vector<const char*> dex_locations_; 1675 int zip_fd_; 1676 std::string zip_location_; 1677 std::string boot_image_option_; 1678 std::vector<const char*> runtime_args_; 1679 std::string image_filename_; 1680 uintptr_t image_base_; 1681 const char* image_classes_zip_filename_; 1682 const char* image_classes_filename_; 1683 const char* compiled_classes_zip_filename_; 1684 const char* compiled_classes_filename_; 1685 std::unique_ptr<std::set<std::string>> image_classes_; 1686 std::unique_ptr<std::set<std::string>> compiled_classes_; 1687 bool image_; 1688 std::unique_ptr<ImageWriter> image_writer_; 1689 bool is_host_; 1690 std::string android_root_; 1691 std::vector<const DexFile*> dex_files_; 1692 std::vector<std::unique_ptr<const DexFile>> opened_dex_files_; 1693 std::unique_ptr<CompilerDriver> driver_; 1694 std::vector<std::string> verbose_methods_; 1695 bool dump_stats_; 1696 bool dump_passes_; 1697 bool dump_timing_; 1698 bool dump_slow_timing_; 1699 std::string dump_cfg_file_name_; 1700 std::string swap_file_name_; 1701 int swap_fd_; 1702 std::string profile_file_; // Profile file to use 1703 TimingLogger* timings_; 1704 std::unique_ptr<CumulativeLogger> compiler_phases_timings_; 1705 std::unique_ptr<std::ostream> init_failure_output_; 1706 1707 DISALLOW_IMPLICIT_CONSTRUCTORS(Dex2Oat); 1708}; 1709 1710const unsigned int WatchDog::kWatchDogTimeoutSeconds; 1711 1712static void b13564922() { 1713#if defined(__linux__) && defined(__arm__) 1714 int major, minor; 1715 struct utsname uts; 1716 if (uname(&uts) != -1 && 1717 sscanf(uts.release, "%d.%d", &major, &minor) == 2 && 1718 ((major < 3) || ((major == 3) && (minor < 4)))) { 1719 // Kernels before 3.4 don't handle the ASLR well and we can run out of address 1720 // space (http://b/13564922). Work around the issue by inhibiting further mmap() randomization. 1721 int old_personality = personality(0xffffffff); 1722 if ((old_personality & ADDR_NO_RANDOMIZE) == 0) { 1723 int new_personality = personality(old_personality | ADDR_NO_RANDOMIZE); 1724 if (new_personality == -1) { 1725 LOG(WARNING) << "personality(. | ADDR_NO_RANDOMIZE) failed."; 1726 } 1727 } 1728 } 1729#endif 1730} 1731 1732static int CompileImage(Dex2Oat& dex2oat) { 1733 dex2oat.Compile(); 1734 1735 // Create the boot.oat. 1736 if (!dex2oat.CreateOatFile()) { 1737 dex2oat.EraseOatFile(); 1738 return EXIT_FAILURE; 1739 } 1740 1741 // Flush and close the boot.oat. We always expect the output file by name, and it will be 1742 // re-opened from the unstripped name. 1743 if (!dex2oat.FlushCloseOatFile()) { 1744 return EXIT_FAILURE; 1745 } 1746 1747 // Creates the boot.art and patches the boot.oat. 1748 if (!dex2oat.HandleImage()) { 1749 return EXIT_FAILURE; 1750 } 1751 1752 // When given --host, finish early without stripping. 1753 if (dex2oat.IsHost()) { 1754 dex2oat.DumpTiming(); 1755 return EXIT_SUCCESS; 1756 } 1757 1758 // Copy unstripped to stripped location, if necessary. 1759 if (!dex2oat.CopyUnstrippedToStripped()) { 1760 return EXIT_FAILURE; 1761 } 1762 1763 // FlushClose again, as stripping might have re-opened the oat file. 1764 if (!dex2oat.FlushCloseOatFile()) { 1765 return EXIT_FAILURE; 1766 } 1767 1768 dex2oat.DumpTiming(); 1769 return EXIT_SUCCESS; 1770} 1771 1772static int CompileApp(Dex2Oat& dex2oat) { 1773 dex2oat.Compile(); 1774 1775 // Create the app oat. 1776 if (!dex2oat.CreateOatFile()) { 1777 dex2oat.EraseOatFile(); 1778 return EXIT_FAILURE; 1779 } 1780 1781 // Do not close the oat file here. We might haven gotten the output file by file descriptor, 1782 // which we would lose. 1783 if (!dex2oat.FlushOatFile()) { 1784 return EXIT_FAILURE; 1785 } 1786 1787 // When given --host, finish early without stripping. 1788 if (dex2oat.IsHost()) { 1789 if (!dex2oat.FlushCloseOatFile()) { 1790 return EXIT_FAILURE; 1791 } 1792 1793 dex2oat.DumpTiming(); 1794 return EXIT_SUCCESS; 1795 } 1796 1797 // Copy unstripped to stripped location, if necessary. This will implicitly flush & close the 1798 // unstripped version. If this is given, we expect to be able to open writable files by name. 1799 if (!dex2oat.CopyUnstrippedToStripped()) { 1800 return EXIT_FAILURE; 1801 } 1802 1803 // Flush and close the file. 1804 if (!dex2oat.FlushCloseOatFile()) { 1805 return EXIT_FAILURE; 1806 } 1807 1808 dex2oat.DumpTiming(); 1809 return EXIT_SUCCESS; 1810} 1811 1812static int dex2oat(int argc, char** argv) { 1813 b13564922(); 1814 1815 TimingLogger timings("compiler", false, false); 1816 1817 Dex2Oat dex2oat(&timings); 1818 1819 // Parse arguments. Argument mistakes will lead to exit(EXIT_FAILURE) in UsageError. 1820 dex2oat.ParseArgs(argc, argv); 1821 1822 // Check early that the result of compilation can be written 1823 if (!dex2oat.OpenFile()) { 1824 return EXIT_FAILURE; 1825 } 1826 1827 LOG(INFO) << CommandLine(); 1828 1829 if (!dex2oat.Setup()) { 1830 dex2oat.EraseOatFile(); 1831 return EXIT_FAILURE; 1832 } 1833 1834 if (dex2oat.IsImage()) { 1835 return CompileImage(dex2oat); 1836 } else { 1837 return CompileApp(dex2oat); 1838 } 1839} 1840} // namespace art 1841 1842int main(int argc, char** argv) { 1843 int result = art::dex2oat(argc, argv); 1844 // Everything was done, do an explicit exit here to avoid running Runtime destructors that take 1845 // time (bug 10645725) unless we're a debug build or running on valgrind. Note: The Dex2Oat class 1846 // should not destruct the runtime in this case. 1847 if (!art::kIsDebugBuild && (RUNNING_ON_VALGRIND == 0)) { 1848 exit(result); 1849 } 1850 return result; 1851} 1852