dex2oat.cc revision 8dc7324da5bd0f2afd2ab558ab04882329a61fe8
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 "interpreter/unstarted_runtime.h" 60#include "leb128.h" 61#include "mirror/art_method-inl.h" 62#include "mirror/class-inl.h" 63#include "mirror/class_loader.h" 64#include "mirror/object-inl.h" 65#include "mirror/object_array-inl.h" 66#include "oat_writer.h" 67#include "os.h" 68#include "runtime.h" 69#include "ScopedLocalRef.h" 70#include "scoped_thread_state_change.h" 71#include "utils.h" 72#include "vector_output_stream.h" 73#include "well_known_classes.h" 74#include "zip_archive.h" 75 76namespace art { 77 78static int original_argc; 79static char** original_argv; 80 81static std::string CommandLine() { 82 std::vector<std::string> command; 83 for (int i = 0; i < original_argc; ++i) { 84 command.push_back(original_argv[i]); 85 } 86 return Join(command, ' '); 87} 88 89static void UsageErrorV(const char* fmt, va_list ap) { 90 std::string error; 91 StringAppendV(&error, fmt, ap); 92 LOG(ERROR) << error; 93} 94 95static void UsageError(const char* fmt, ...) { 96 va_list ap; 97 va_start(ap, fmt); 98 UsageErrorV(fmt, ap); 99 va_end(ap); 100} 101 102NO_RETURN static void Usage(const char* fmt, ...) { 103 va_list ap; 104 va_start(ap, fmt); 105 UsageErrorV(fmt, ap); 106 va_end(ap); 107 108 UsageError("Command: %s", CommandLine().c_str()); 109 110 UsageError("Usage: dex2oat [options]..."); 111 UsageError(""); 112 UsageError(" -j<number>: specifies the number of threads used for compilation."); 113 UsageError(" Default is the number of detected hardware threads available on the"); 114 UsageError(" host system."); 115 UsageError(" Example: -j12"); 116 UsageError(""); 117 UsageError(" --dex-file=<dex-file>: specifies a .dex, .jar, or .apk file to compile."); 118 UsageError(" Example: --dex-file=/system/framework/core.jar"); 119 UsageError(""); 120 UsageError(" --dex-location=<dex-location>: specifies an alternative dex location to"); 121 UsageError(" encode in the oat file for the corresponding --dex-file argument."); 122 UsageError(" Example: --dex-file=/home/build/out/system/framework/core.jar"); 123 UsageError(" --dex-location=/system/framework/core.jar"); 124 UsageError(""); 125 UsageError(" --zip-fd=<file-descriptor>: specifies a file descriptor of a zip file"); 126 UsageError(" containing a classes.dex file to compile."); 127 UsageError(" Example: --zip-fd=5"); 128 UsageError(""); 129 UsageError(" --zip-location=<zip-location>: specifies a symbolic name for the file"); 130 UsageError(" corresponding to the file descriptor specified by --zip-fd."); 131 UsageError(" Example: --zip-location=/system/app/Calculator.apk"); 132 UsageError(""); 133 UsageError(" --oat-file=<file.oat>: specifies the oat output destination via a filename."); 134 UsageError(" Example: --oat-file=/system/framework/boot.oat"); 135 UsageError(""); 136 UsageError(" --oat-fd=<number>: specifies the oat output destination via a file descriptor."); 137 UsageError(" Example: --oat-fd=6"); 138 UsageError(""); 139 UsageError(" --oat-location=<oat-name>: specifies a symbolic name for the file corresponding"); 140 UsageError(" to the file descriptor specified by --oat-fd."); 141 UsageError(" Example: --oat-location=/data/dalvik-cache/system@app@Calculator.apk.oat"); 142 UsageError(""); 143 UsageError(" --oat-symbols=<file.oat>: specifies the oat output destination with full symbols."); 144 UsageError(" Example: --oat-symbols=/symbols/system/framework/boot.oat"); 145 UsageError(""); 146 UsageError(" --image=<file.art>: specifies the output image filename."); 147 UsageError(" Example: --image=/system/framework/boot.art"); 148 UsageError(""); 149 UsageError(" --image-classes=<classname-file>: specifies classes to include in an image."); 150 UsageError(" Example: --image=frameworks/base/preloaded-classes"); 151 UsageError(""); 152 UsageError(" --base=<hex-address>: specifies the base address when creating a boot image."); 153 UsageError(" Example: --base=0x50000000"); 154 UsageError(""); 155 UsageError(" --boot-image=<file.art>: provide the image file for the boot class path."); 156 UsageError(" Example: --boot-image=/system/framework/boot.art"); 157 UsageError(" Default: $ANDROID_ROOT/system/framework/boot.art"); 158 UsageError(""); 159 UsageError(" --android-root=<path>: used to locate libraries for portable linking."); 160 UsageError(" Example: --android-root=out/host/linux-x86"); 161 UsageError(" Default: $ANDROID_ROOT"); 162 UsageError(""); 163 UsageError(" --instruction-set=(arm|arm64|mips|mips64|x86|x86_64): compile for a particular"); 164 UsageError(" instruction set."); 165 UsageError(" Example: --instruction-set=x86"); 166 UsageError(" Default: arm"); 167 UsageError(""); 168 UsageError(" --instruction-set-features=...,: Specify instruction set features"); 169 UsageError(" Example: --instruction-set-features=div"); 170 UsageError(" Default: default"); 171 UsageError(""); 172 UsageError(" --compile-pic: Force indirect use of code, methods, and classes"); 173 UsageError(" Default: disabled"); 174 UsageError(""); 175 UsageError(" --compiler-backend=(Quick|Optimizing): select compiler backend"); 176 UsageError(" set."); 177 UsageError(" Example: --compiler-backend=Optimizing"); 178 if (kUseOptimizingCompiler) { 179 UsageError(" Default: Optimizing"); 180 } else { 181 UsageError(" Default: Quick"); 182 } 183 UsageError(""); 184 UsageError(" --compiler-filter=" 185 "(verify-none" 186 "|interpret-only" 187 "|space" 188 "|balanced" 189 "|speed" 190 "|everything" 191 "|time):"); 192 UsageError(" select compiler filter."); 193 UsageError(" Example: --compiler-filter=everything"); 194 UsageError(" Default: speed"); 195 UsageError(""); 196 UsageError(" --huge-method-max=<method-instruction-count>: threshold size for a huge"); 197 UsageError(" method for compiler filter tuning."); 198 UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold); 199 UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold); 200 UsageError(""); 201 UsageError(" --large-method-max=<method-instruction-count>: threshold size for a large"); 202 UsageError(" method for compiler filter tuning."); 203 UsageError(" Example: --large-method-max=%d", CompilerOptions::kDefaultLargeMethodThreshold); 204 UsageError(" Default: %d", CompilerOptions::kDefaultLargeMethodThreshold); 205 UsageError(""); 206 UsageError(" --small-method-max=<method-instruction-count>: threshold size for a small"); 207 UsageError(" method for compiler filter tuning."); 208 UsageError(" Example: --small-method-max=%d", CompilerOptions::kDefaultSmallMethodThreshold); 209 UsageError(" Default: %d", CompilerOptions::kDefaultSmallMethodThreshold); 210 UsageError(""); 211 UsageError(" --tiny-method-max=<method-instruction-count>: threshold size for a tiny"); 212 UsageError(" method for compiler filter tuning."); 213 UsageError(" Example: --tiny-method-max=%d", CompilerOptions::kDefaultTinyMethodThreshold); 214 UsageError(" Default: %d", CompilerOptions::kDefaultTinyMethodThreshold); 215 UsageError(""); 216 UsageError(" --num-dex-methods=<method-count>: threshold size for a small dex file for"); 217 UsageError(" compiler filter tuning. If the input has fewer than this many methods"); 218 UsageError(" and the filter is not interpret-only or verify-none, overrides the"); 219 UsageError(" filter to use speed"); 220 UsageError(" Example: --num-dex-method=%d", CompilerOptions::kDefaultNumDexMethodsThreshold); 221 UsageError(" Default: %d", CompilerOptions::kDefaultNumDexMethodsThreshold); 222 UsageError(""); 223 UsageError(" --dump-timing: display a breakdown of where time was spent"); 224 UsageError(""); 225 UsageError(" --include-patch-information: Include patching information so the generated code"); 226 UsageError(" can have its base address moved without full recompilation."); 227 UsageError(""); 228 UsageError(" --no-include-patch-information: Do not include patching information."); 229 UsageError(""); 230 UsageError(" --include-debug-symbols: Include ELF symbols in this oat file"); 231 UsageError(""); 232 UsageError(" --no-include-debug-symbols: Do not include ELF symbols in this oat file"); 233 UsageError(""); 234 UsageError(" --include-cfi: Include call frame information in the .eh_frame section."); 235 UsageError(" The --include-debug-symbols option implies --include-cfi."); 236 UsageError(""); 237 UsageError(" --no-include-cfi: Do not include call frame information in the .eh_frame section."); 238 UsageError(""); 239 UsageError(" --runtime-arg <argument>: used to specify various arguments for the runtime,"); 240 UsageError(" such as initial heap size, maximum heap size, and verbose output."); 241 UsageError(" Use a separate --runtime-arg switch for each argument."); 242 UsageError(" Example: --runtime-arg -Xms256m"); 243 UsageError(""); 244 UsageError(" --profile-file=<filename>: specify profiler output file to use for compilation."); 245 UsageError(""); 246 UsageError(" --print-pass-names: print a list of pass names"); 247 UsageError(""); 248 UsageError(" --disable-passes=<pass-names>: disable one or more passes separated by comma."); 249 UsageError(" Example: --disable-passes=UseCount,BBOptimizations"); 250 UsageError(""); 251 UsageError(" --print-pass-options: print a list of passes that have configurable options along " 252 "with the setting."); 253 UsageError(" Will print default if no overridden setting exists."); 254 UsageError(""); 255 UsageError(" --pass-options=Pass1Name:Pass1OptionName:Pass1Option#," 256 "Pass2Name:Pass2OptionName:Pass2Option#"); 257 UsageError(" Used to specify a pass specific option. The setting itself must be integer."); 258 UsageError(" Separator used between options is a comma."); 259 UsageError(""); 260 UsageError(" --swap-file=<file-name>: specifies a file to use for swap."); 261 UsageError(" Example: --swap-file=/data/tmp/swap.001"); 262 UsageError(""); 263 UsageError(" --swap-fd=<file-descriptor>: specifies a file to use for swap (by descriptor)."); 264 UsageError(" Example: --swap-fd=10"); 265 UsageError(""); 266 std::cerr << "See log for usage error information\n"; 267 exit(EXIT_FAILURE); 268} 269 270// The primary goal of the watchdog is to prevent stuck build servers 271// during development when fatal aborts lead to a cascade of failures 272// that result in a deadlock. 273class WatchDog { 274// WatchDog defines its own CHECK_PTHREAD_CALL to avoid using LOG which uses locks 275#undef CHECK_PTHREAD_CALL 276#define CHECK_WATCH_DOG_PTHREAD_CALL(call, args, what) \ 277 do { \ 278 int rc = call args; \ 279 if (rc != 0) { \ 280 errno = rc; \ 281 std::string message(# call); \ 282 message += " failed for "; \ 283 message += reason; \ 284 Fatal(message); \ 285 } \ 286 } while (false) 287 288 public: 289 explicit WatchDog(bool is_watch_dog_enabled) { 290 is_watch_dog_enabled_ = is_watch_dog_enabled; 291 if (!is_watch_dog_enabled_) { 292 return; 293 } 294 shutting_down_ = false; 295 const char* reason = "dex2oat watch dog thread startup"; 296 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_init, (&mutex_, nullptr), reason); 297 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_init, (&cond_, nullptr), reason); 298 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_init, (&attr_), reason); 299 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_create, (&pthread_, &attr_, &CallBack, this), reason); 300 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_destroy, (&attr_), reason); 301 } 302 ~WatchDog() { 303 if (!is_watch_dog_enabled_) { 304 return; 305 } 306 const char* reason = "dex2oat watch dog thread shutdown"; 307 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 308 shutting_down_ = true; 309 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_signal, (&cond_), reason); 310 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 311 312 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_join, (pthread_, nullptr), reason); 313 314 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_destroy, (&cond_), reason); 315 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_destroy, (&mutex_), reason); 316 } 317 318 private: 319 static void* CallBack(void* arg) { 320 WatchDog* self = reinterpret_cast<WatchDog*>(arg); 321 ::art::SetThreadName("dex2oat watch dog"); 322 self->Wait(); 323 return nullptr; 324 } 325 326 static void Message(char severity, const std::string& message) { 327 // TODO: Remove when we switch to LOG when we can guarantee it won't prevent shutdown in error 328 // cases. 329 fprintf(stderr, "dex2oat%s %c %d %d %s\n", 330 kIsDebugBuild ? "d" : "", 331 severity, 332 getpid(), 333 GetTid(), 334 message.c_str()); 335 } 336 337 NO_RETURN static void Fatal(const std::string& message) { 338 Message('F', message); 339 exit(1); 340 } 341 342 void Wait() { 343 // TODO: tune the multiplier for GC verification, the following is just to make the timeout 344 // large. 345 int64_t multiplier = kVerifyObjectSupport > kVerifyObjectModeFast ? 100 : 1; 346 timespec timeout_ts; 347 InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogTimeoutSeconds * 1000, 0, &timeout_ts); 348 const char* reason = "dex2oat watch dog thread waiting"; 349 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 350 while (!shutting_down_) { 351 int rc = TEMP_FAILURE_RETRY(pthread_cond_timedwait(&cond_, &mutex_, &timeout_ts)); 352 if (rc == ETIMEDOUT) { 353 Fatal(StringPrintf("dex2oat did not finish after %d seconds", kWatchDogTimeoutSeconds)); 354 } else if (rc != 0) { 355 std::string message(StringPrintf("pthread_cond_timedwait failed: %s", 356 strerror(errno))); 357 Fatal(message.c_str()); 358 } 359 } 360 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 361 } 362 363 // When setting timeouts, keep in mind that the build server may not be as fast as your desktop. 364 // Debug builds are slower so they have larger timeouts. 365 static const unsigned int kSlowdownFactor = kIsDebugBuild ? 5U : 1U; 366 367 // 6 minutes scaled by kSlowdownFactor. 368 static const unsigned int kWatchDogTimeoutSeconds = kSlowdownFactor * 6 * 60; 369 370 bool is_watch_dog_enabled_; 371 bool shutting_down_; 372 // TODO: Switch to Mutex when we can guarantee it won't prevent shutdown in error cases. 373 pthread_mutex_t mutex_; 374 pthread_cond_t cond_; 375 pthread_attr_t attr_; 376 pthread_t pthread_; 377}; 378 379static void ParseStringAfterChar(const std::string& s, char c, std::string* parsed_value) { 380 std::string::size_type colon = s.find(c); 381 if (colon == std::string::npos) { 382 Usage("Missing char %c in option %s\n", c, s.c_str()); 383 } 384 // Add one to remove the char we were trimming until. 385 *parsed_value = s.substr(colon + 1); 386} 387 388static void ParseDouble(const std::string& option, char after_char, double min, double max, 389 double* parsed_value) { 390 std::string substring; 391 ParseStringAfterChar(option, after_char, &substring); 392 bool sane_val = true; 393 double value; 394 if (false) { 395 // TODO: this doesn't seem to work on the emulator. b/15114595 396 std::stringstream iss(substring); 397 iss >> value; 398 // Ensure that we have a value, there was no cruft after it and it satisfies a sensible range. 399 sane_val = iss.eof() && (value >= min) && (value <= max); 400 } else { 401 char* end = nullptr; 402 value = strtod(substring.c_str(), &end); 403 sane_val = *end == '\0' && value >= min && value <= max; 404 } 405 if (!sane_val) { 406 Usage("Invalid double value %s for option %s\n", substring.c_str(), option.c_str()); 407 } 408 *parsed_value = value; 409} 410 411static constexpr size_t kMinDexFilesForSwap = 2; 412static constexpr size_t kMinDexFileCumulativeSizeForSwap = 20 * MB; 413 414static bool UseSwap(bool is_image, std::vector<const DexFile*>& dex_files) { 415 if (is_image) { 416 // Don't use swap, we know generation should succeed, and we don't want to slow it down. 417 return false; 418 } 419 if (dex_files.size() < kMinDexFilesForSwap) { 420 // If there are less dex files than the threshold, assume it's gonna be fine. 421 return false; 422 } 423 size_t dex_files_size = 0; 424 for (const auto* dex_file : dex_files) { 425 dex_files_size += dex_file->GetHeader().file_size_; 426 } 427 return dex_files_size >= kMinDexFileCumulativeSizeForSwap; 428} 429 430class Dex2Oat FINAL { 431 public: 432 explicit Dex2Oat(TimingLogger* timings) : 433 compiler_kind_(kUseOptimizingCompiler ? Compiler::kOptimizing : Compiler::kQuick), 434 instruction_set_(kRuntimeISA), 435 // Take the default set of instruction features from the build. 436 method_inliner_map_(), 437 runtime_(nullptr), 438 thread_count_(sysconf(_SC_NPROCESSORS_CONF)), 439 start_ns_(NanoTime()), 440 oat_fd_(-1), 441 zip_fd_(-1), 442 image_base_(0U), 443 image_classes_zip_filename_(nullptr), 444 image_classes_filename_(nullptr), 445 compiled_classes_zip_filename_(nullptr), 446 compiled_classes_filename_(nullptr), 447 image_(false), 448 is_host_(false), 449 dump_stats_(false), 450 dump_passes_(false), 451 dump_timing_(false), 452 dump_slow_timing_(kIsDebugBuild), 453 swap_fd_(-1), 454 timings_(timings) {} 455 456 ~Dex2Oat() { 457 // Free opened dex files before deleting the runtime_, because ~DexFile 458 // uses MemMap, which is shut down by ~Runtime. 459 class_path_files_.clear(); 460 opened_dex_files_.clear(); 461 462 // Log completion time before deleting the runtime_, because this accesses 463 // the runtime. 464 LogCompletionTime(); 465 466 if (kIsDebugBuild || (RUNNING_ON_VALGRIND != 0)) { 467 delete runtime_; // See field declaration for why this is manual. 468 } 469 } 470 471 // Parse the arguments from the command line. In case of an unrecognized option or impossible 472 // values/combinations, a usage error will be displayed and exit() is called. Thus, if the method 473 // returns, arguments have been successfully parsed. 474 void ParseArgs(int argc, char** argv) { 475 original_argc = argc; 476 original_argv = argv; 477 478 InitLogging(argv); 479 480 // Skip over argv[0]. 481 argv++; 482 argc--; 483 484 if (argc == 0) { 485 Usage("No arguments specified"); 486 } 487 488 std::string oat_symbols; 489 std::string boot_image_filename; 490 const char* compiler_filter_string = nullptr; 491 bool compile_pic = false; 492 int huge_method_threshold = CompilerOptions::kDefaultHugeMethodThreshold; 493 int large_method_threshold = CompilerOptions::kDefaultLargeMethodThreshold; 494 int small_method_threshold = CompilerOptions::kDefaultSmallMethodThreshold; 495 int tiny_method_threshold = CompilerOptions::kDefaultTinyMethodThreshold; 496 int num_dex_methods_threshold = CompilerOptions::kDefaultNumDexMethodsThreshold; 497 498 // Profile file to use 499 double top_k_profile_threshold = CompilerOptions::kDefaultTopKProfileThreshold; 500 501 bool debuggable = false; 502 bool include_patch_information = CompilerOptions::kDefaultIncludePatchInformation; 503 bool include_debug_symbols = kIsDebugBuild; 504 bool include_cfi = kIsDebugBuild; 505 bool watch_dog_enabled = true; 506 bool abort_on_hard_verifier_error = false; 507 bool requested_specific_compiler = false; 508 509 PassManagerOptions pass_manager_options; 510 511 std::string error_msg; 512 513 for (int i = 0; i < argc; i++) { 514 const StringPiece option(argv[i]); 515 const bool log_options = false; 516 if (log_options) { 517 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 518 } 519 if (option.starts_with("--dex-file=")) { 520 dex_filenames_.push_back(option.substr(strlen("--dex-file=")).data()); 521 } else if (option.starts_with("--dex-location=")) { 522 dex_locations_.push_back(option.substr(strlen("--dex-location=")).data()); 523 } else if (option.starts_with("--zip-fd=")) { 524 const char* zip_fd_str = option.substr(strlen("--zip-fd=")).data(); 525 if (!ParseInt(zip_fd_str, &zip_fd_)) { 526 Usage("Failed to parse --zip-fd argument '%s' as an integer", zip_fd_str); 527 } 528 if (zip_fd_ < 0) { 529 Usage("--zip-fd passed a negative value %d", zip_fd_); 530 } 531 } else if (option.starts_with("--zip-location=")) { 532 zip_location_ = option.substr(strlen("--zip-location=")).data(); 533 } else if (option.starts_with("--oat-file=")) { 534 oat_filename_ = option.substr(strlen("--oat-file=")).data(); 535 } else if (option.starts_with("--oat-symbols=")) { 536 oat_symbols = option.substr(strlen("--oat-symbols=")).data(); 537 } else if (option.starts_with("--oat-fd=")) { 538 const char* oat_fd_str = option.substr(strlen("--oat-fd=")).data(); 539 if (!ParseInt(oat_fd_str, &oat_fd_)) { 540 Usage("Failed to parse --oat-fd argument '%s' as an integer", oat_fd_str); 541 } 542 if (oat_fd_ < 0) { 543 Usage("--oat-fd passed a negative value %d", oat_fd_); 544 } 545 } else if (option == "--watch-dog") { 546 watch_dog_enabled = true; 547 } else if (option == "--no-watch-dog") { 548 watch_dog_enabled = false; 549 } else if (option.starts_with("-j")) { 550 const char* thread_count_str = option.substr(strlen("-j")).data(); 551 if (!ParseUint(thread_count_str, &thread_count_)) { 552 Usage("Failed to parse -j argument '%s' as an integer", thread_count_str); 553 } 554 } else if (option.starts_with("--oat-location=")) { 555 oat_location_ = option.substr(strlen("--oat-location=")).data(); 556 } else if (option.starts_with("--image=")) { 557 image_filename_ = option.substr(strlen("--image=")).data(); 558 } else if (option.starts_with("--image-classes=")) { 559 image_classes_filename_ = option.substr(strlen("--image-classes=")).data(); 560 } else if (option.starts_with("--image-classes-zip=")) { 561 image_classes_zip_filename_ = option.substr(strlen("--image-classes-zip=")).data(); 562 } else if (option.starts_with("--compiled-classes=")) { 563 compiled_classes_filename_ = option.substr(strlen("--compiled-classes=")).data(); 564 } else if (option.starts_with("--compiled-classes-zip=")) { 565 compiled_classes_zip_filename_ = option.substr(strlen("--compiled-classes-zip=")).data(); 566 } else if (option.starts_with("--base=")) { 567 const char* image_base_str = option.substr(strlen("--base=")).data(); 568 char* end; 569 image_base_ = strtoul(image_base_str, &end, 16); 570 if (end == image_base_str || *end != '\0') { 571 Usage("Failed to parse hexadecimal value for option %s", option.data()); 572 } 573 } else if (option.starts_with("--boot-image=")) { 574 boot_image_filename = option.substr(strlen("--boot-image=")).data(); 575 } else if (option.starts_with("--android-root=")) { 576 android_root_ = option.substr(strlen("--android-root=")).data(); 577 } else if (option.starts_with("--instruction-set=")) { 578 StringPiece instruction_set_str = option.substr(strlen("--instruction-set=")).data(); 579 // StringPiece is not necessarily zero-terminated, so need to make a copy and ensure it. 580 std::unique_ptr<char[]> buf(new char[instruction_set_str.length() + 1]); 581 strncpy(buf.get(), instruction_set_str.data(), instruction_set_str.length()); 582 buf.get()[instruction_set_str.length()] = 0; 583 instruction_set_ = GetInstructionSetFromString(buf.get()); 584 // arm actually means thumb2. 585 if (instruction_set_ == InstructionSet::kArm) { 586 instruction_set_ = InstructionSet::kThumb2; 587 } 588 } else if (option.starts_with("--instruction-set-variant=")) { 589 StringPiece str = option.substr(strlen("--instruction-set-variant=")).data(); 590 instruction_set_features_.reset( 591 InstructionSetFeatures::FromVariant(instruction_set_, str.as_string(), &error_msg)); 592 if (instruction_set_features_.get() == nullptr) { 593 Usage("%s", error_msg.c_str()); 594 } 595 } else if (option.starts_with("--instruction-set-features=")) { 596 StringPiece str = option.substr(strlen("--instruction-set-features=")).data(); 597 if (instruction_set_features_.get() == nullptr) { 598 instruction_set_features_.reset( 599 InstructionSetFeatures::FromVariant(instruction_set_, "default", &error_msg)); 600 if (instruction_set_features_.get() == nullptr) { 601 Usage("Problem initializing default instruction set features variant: %s", 602 error_msg.c_str()); 603 } 604 } 605 instruction_set_features_.reset( 606 instruction_set_features_->AddFeaturesFromString(str.as_string(), &error_msg)); 607 if (instruction_set_features_.get() == nullptr) { 608 Usage("Error parsing '%s': %s", option.data(), error_msg.c_str()); 609 } 610 } else if (option.starts_with("--compiler-backend=")) { 611 requested_specific_compiler = true; 612 StringPiece backend_str = option.substr(strlen("--compiler-backend=")).data(); 613 if (backend_str == "Quick") { 614 compiler_kind_ = Compiler::kQuick; 615 } else if (backend_str == "Optimizing") { 616 compiler_kind_ = Compiler::kOptimizing; 617 } else { 618 Usage("Unknown compiler backend: %s", backend_str.data()); 619 } 620 } else if (option.starts_with("--compiler-filter=")) { 621 compiler_filter_string = option.substr(strlen("--compiler-filter=")).data(); 622 } else if (option == "--compile-pic") { 623 compile_pic = true; 624 } else if (option.starts_with("--huge-method-max=")) { 625 const char* threshold = option.substr(strlen("--huge-method-max=")).data(); 626 if (!ParseInt(threshold, &huge_method_threshold)) { 627 Usage("Failed to parse --huge-method-max '%s' as an integer", threshold); 628 } 629 if (huge_method_threshold < 0) { 630 Usage("--huge-method-max passed a negative value %s", huge_method_threshold); 631 } 632 } else if (option.starts_with("--large-method-max=")) { 633 const char* threshold = option.substr(strlen("--large-method-max=")).data(); 634 if (!ParseInt(threshold, &large_method_threshold)) { 635 Usage("Failed to parse --large-method-max '%s' as an integer", threshold); 636 } 637 if (large_method_threshold < 0) { 638 Usage("--large-method-max passed a negative value %s", large_method_threshold); 639 } 640 } else if (option.starts_with("--small-method-max=")) { 641 const char* threshold = option.substr(strlen("--small-method-max=")).data(); 642 if (!ParseInt(threshold, &small_method_threshold)) { 643 Usage("Failed to parse --small-method-max '%s' as an integer", threshold); 644 } 645 if (small_method_threshold < 0) { 646 Usage("--small-method-max passed a negative value %s", small_method_threshold); 647 } 648 } else if (option.starts_with("--tiny-method-max=")) { 649 const char* threshold = option.substr(strlen("--tiny-method-max=")).data(); 650 if (!ParseInt(threshold, &tiny_method_threshold)) { 651 Usage("Failed to parse --tiny-method-max '%s' as an integer", threshold); 652 } 653 if (tiny_method_threshold < 0) { 654 Usage("--tiny-method-max passed a negative value %s", tiny_method_threshold); 655 } 656 } else if (option.starts_with("--num-dex-methods=")) { 657 const char* threshold = option.substr(strlen("--num-dex-methods=")).data(); 658 if (!ParseInt(threshold, &num_dex_methods_threshold)) { 659 Usage("Failed to parse --num-dex-methods '%s' as an integer", threshold); 660 } 661 if (num_dex_methods_threshold < 0) { 662 Usage("--num-dex-methods passed a negative value %s", num_dex_methods_threshold); 663 } 664 } else if (option == "--host") { 665 is_host_ = true; 666 } else if (option == "--runtime-arg") { 667 if (++i >= argc) { 668 Usage("Missing required argument for --runtime-arg"); 669 } 670 if (log_options) { 671 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 672 } 673 runtime_args_.push_back(argv[i]); 674 } else if (option == "--dump-timing") { 675 dump_timing_ = true; 676 } else if (option == "--dump-passes") { 677 dump_passes_ = true; 678 } else if (option.starts_with("--dump-cfg=")) { 679 dump_cfg_file_name_ = option.substr(strlen("--dump-cfg=")).data(); 680 } else if (option == "--dump-stats") { 681 dump_stats_ = true; 682 } else if (option == "--include-debug-symbols" || option == "--no-strip-symbols") { 683 include_debug_symbols = true; 684 } else if (option == "--no-include-debug-symbols" || option == "--strip-symbols") { 685 include_debug_symbols = false; 686 } else if (option == "--include-cfi") { 687 include_cfi = true; 688 } else if (option == "--no-include-cfi") { 689 include_cfi = false; 690 } else if (option == "--debuggable") { 691 debuggable = true; 692 } else if (option.starts_with("--profile-file=")) { 693 profile_file_ = option.substr(strlen("--profile-file=")).data(); 694 VLOG(compiler) << "dex2oat: profile file is " << profile_file_; 695 } else if (option == "--no-profile-file") { 696 // No profile 697 } else if (option.starts_with("--top-k-profile-threshold=")) { 698 ParseDouble(option.data(), '=', 0.0, 100.0, &top_k_profile_threshold); 699 } else if (option == "--print-pass-names") { 700 pass_manager_options.SetPrintPassNames(true); 701 } else if (option.starts_with("--disable-passes=")) { 702 const std::string disable_passes = option.substr(strlen("--disable-passes=")).data(); 703 pass_manager_options.SetDisablePassList(disable_passes); 704 } else if (option.starts_with("--print-passes=")) { 705 const std::string print_passes = option.substr(strlen("--print-passes=")).data(); 706 pass_manager_options.SetPrintPassList(print_passes); 707 } else if (option == "--print-all-passes") { 708 pass_manager_options.SetPrintAllPasses(); 709 } else if (option.starts_with("--dump-cfg-passes=")) { 710 const std::string dump_passes_string = option.substr(strlen("--dump-cfg-passes=")).data(); 711 pass_manager_options.SetDumpPassList(dump_passes_string); 712 } else if (option == "--print-pass-options") { 713 pass_manager_options.SetPrintPassOptions(true); 714 } else if (option.starts_with("--pass-options=")) { 715 const std::string options = option.substr(strlen("--pass-options=")).data(); 716 pass_manager_options.SetOverriddenPassOptions(options); 717 } else if (option == "--include-patch-information") { 718 include_patch_information = true; 719 } else if (option == "--no-include-patch-information") { 720 include_patch_information = false; 721 } else if (option.starts_with("--verbose-methods=")) { 722 // TODO: rather than switch off compiler logging, make all VLOG(compiler) messages 723 // conditional on having verbost methods. 724 gLogVerbosity.compiler = false; 725 Split(option.substr(strlen("--verbose-methods=")).ToString(), ',', &verbose_methods_); 726 } else if (option.starts_with("--dump-init-failures=")) { 727 std::string file_name = option.substr(strlen("--dump-init-failures=")).data(); 728 init_failure_output_.reset(new std::ofstream(file_name)); 729 if (init_failure_output_.get() == nullptr) { 730 LOG(ERROR) << "Failed to allocate ofstream"; 731 } else if (init_failure_output_->fail()) { 732 LOG(ERROR) << "Failed to open " << file_name << " for writing the initialization " 733 << "failures."; 734 init_failure_output_.reset(); 735 } 736 } else if (option.starts_with("--swap-file=")) { 737 swap_file_name_ = option.substr(strlen("--swap-file=")).data(); 738 } else if (option.starts_with("--swap-fd=")) { 739 const char* swap_fd_str = option.substr(strlen("--swap-fd=")).data(); 740 if (!ParseInt(swap_fd_str, &swap_fd_)) { 741 Usage("Failed to parse --swap-fd argument '%s' as an integer", swap_fd_str); 742 } 743 if (swap_fd_ < 0) { 744 Usage("--swap-fd passed a negative value %d", swap_fd_); 745 } 746 } else if (option == "--abort-on-hard-verifier-error") { 747 abort_on_hard_verifier_error = true; 748 } else { 749 Usage("Unknown argument %s", option.data()); 750 } 751 } 752 753 image_ = (!image_filename_.empty()); 754 if (!requested_specific_compiler && !kUseOptimizingCompiler) { 755 // If no specific compiler is requested, the current behavior is 756 // to compile the boot image with Quick, and the rest with Optimizing. 757 compiler_kind_ = image_ ? Compiler::kQuick : Compiler::kOptimizing; 758 } 759 760 if (compiler_kind_ == Compiler::kOptimizing) { 761 // Optimizing only supports PIC mode. 762 compile_pic = true; 763 } 764 765 if (oat_filename_.empty() && oat_fd_ == -1) { 766 Usage("Output must be supplied with either --oat-file or --oat-fd"); 767 } 768 769 if (!oat_filename_.empty() && oat_fd_ != -1) { 770 Usage("--oat-file should not be used with --oat-fd"); 771 } 772 773 if (!oat_symbols.empty() && oat_fd_ != -1) { 774 Usage("--oat-symbols should not be used with --oat-fd"); 775 } 776 777 if (!oat_symbols.empty() && is_host_) { 778 Usage("--oat-symbols should not be used with --host"); 779 } 780 781 if (oat_fd_ != -1 && !image_filename_.empty()) { 782 Usage("--oat-fd should not be used with --image"); 783 } 784 785 if (android_root_.empty()) { 786 const char* android_root_env_var = getenv("ANDROID_ROOT"); 787 if (android_root_env_var == nullptr) { 788 Usage("--android-root unspecified and ANDROID_ROOT not set"); 789 } 790 android_root_ += android_root_env_var; 791 } 792 793 if (!image_ && boot_image_filename.empty()) { 794 boot_image_filename += android_root_; 795 boot_image_filename += "/framework/boot.art"; 796 } 797 if (!boot_image_filename.empty()) { 798 boot_image_option_ += "-Ximage:"; 799 boot_image_option_ += boot_image_filename; 800 } 801 802 if (image_classes_filename_ != nullptr && !image_) { 803 Usage("--image-classes should only be used with --image"); 804 } 805 806 if (image_classes_filename_ != nullptr && !boot_image_option_.empty()) { 807 Usage("--image-classes should not be used with --boot-image"); 808 } 809 810 if (image_classes_zip_filename_ != nullptr && image_classes_filename_ == nullptr) { 811 Usage("--image-classes-zip should be used with --image-classes"); 812 } 813 814 if (compiled_classes_filename_ != nullptr && !image_) { 815 Usage("--compiled-classes should only be used with --image"); 816 } 817 818 if (compiled_classes_filename_ != nullptr && !boot_image_option_.empty()) { 819 Usage("--compiled-classes should not be used with --boot-image"); 820 } 821 822 if (compiled_classes_zip_filename_ != nullptr && compiled_classes_filename_ == nullptr) { 823 Usage("--compiled-classes-zip should be used with --compiled-classes"); 824 } 825 826 if (dex_filenames_.empty() && zip_fd_ == -1) { 827 Usage("Input must be supplied with either --dex-file or --zip-fd"); 828 } 829 830 if (!dex_filenames_.empty() && zip_fd_ != -1) { 831 Usage("--dex-file should not be used with --zip-fd"); 832 } 833 834 if (!dex_filenames_.empty() && !zip_location_.empty()) { 835 Usage("--dex-file should not be used with --zip-location"); 836 } 837 838 if (dex_locations_.empty()) { 839 for (const char* dex_file_name : dex_filenames_) { 840 dex_locations_.push_back(dex_file_name); 841 } 842 } else if (dex_locations_.size() != dex_filenames_.size()) { 843 Usage("--dex-location arguments do not match --dex-file arguments"); 844 } 845 846 if (zip_fd_ != -1 && zip_location_.empty()) { 847 Usage("--zip-location should be supplied with --zip-fd"); 848 } 849 850 if (boot_image_option_.empty()) { 851 if (image_base_ == 0) { 852 Usage("Non-zero --base not specified"); 853 } 854 } 855 856 oat_stripped_ = oat_filename_; 857 if (!oat_symbols.empty()) { 858 oat_unstripped_ = oat_symbols; 859 } else { 860 oat_unstripped_ = oat_filename_; 861 } 862 863 // If no instruction set feature was given, use the default one for the target 864 // instruction set. 865 if (instruction_set_features_.get() == nullptr) { 866 instruction_set_features_.reset( 867 InstructionSetFeatures::FromVariant(instruction_set_, "default", &error_msg)); 868 if (instruction_set_features_.get() == nullptr) { 869 Usage("Problem initializing default instruction set features variant: %s", 870 error_msg.c_str()); 871 } 872 } 873 874 if (instruction_set_ == kRuntimeISA) { 875 std::unique_ptr<const InstructionSetFeatures> runtime_features( 876 InstructionSetFeatures::FromCppDefines()); 877 if (!instruction_set_features_->Equals(runtime_features.get())) { 878 LOG(WARNING) << "Mismatch between dex2oat instruction set features (" 879 << *instruction_set_features_ << ") and those of dex2oat executable (" 880 << *runtime_features <<") for the command line:\n" 881 << CommandLine(); 882 } 883 } 884 885 if (compiler_filter_string == nullptr) { 886 compiler_filter_string = "speed"; 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, "verify-at-runtime") == 0) { 896 compiler_filter = CompilerOptions::kVerifyAtRuntime; 897 } else if (strcmp(compiler_filter_string, "space") == 0) { 898 compiler_filter = CompilerOptions::kSpace; 899 } else if (strcmp(compiler_filter_string, "balanced") == 0) { 900 compiler_filter = CompilerOptions::kBalanced; 901 } else if (strcmp(compiler_filter_string, "speed") == 0) { 902 compiler_filter = CompilerOptions::kSpeed; 903 } else if (strcmp(compiler_filter_string, "everything") == 0) { 904 compiler_filter = CompilerOptions::kEverything; 905 } else if (strcmp(compiler_filter_string, "time") == 0) { 906 compiler_filter = CompilerOptions::kTime; 907 } else { 908 Usage("Unknown --compiler-filter value %s", compiler_filter_string); 909 } 910 911 // Checks are all explicit until we know the architecture. 912 bool implicit_null_checks = false; 913 bool implicit_so_checks = false; 914 bool implicit_suspend_checks = false; 915 // Set the compilation target's implicit checks options. 916 switch (instruction_set_) { 917 case kArm: 918 case kThumb2: 919 case kArm64: 920 case kX86: 921 case kX86_64: 922 implicit_null_checks = true; 923 implicit_so_checks = true; 924 break; 925 926 default: 927 // Defaults are correct. 928 break; 929 } 930 931 if (debuggable) { 932 // TODO: Consider adding CFI info and symbols here. 933 } 934 935 compiler_options_.reset(new CompilerOptions(compiler_filter, 936 huge_method_threshold, 937 large_method_threshold, 938 small_method_threshold, 939 tiny_method_threshold, 940 num_dex_methods_threshold, 941 include_patch_information, 942 top_k_profile_threshold, 943 debuggable, 944 include_debug_symbols, 945 include_cfi, 946 implicit_null_checks, 947 implicit_so_checks, 948 implicit_suspend_checks, 949 compile_pic, 950 verbose_methods_.empty() ? 951 nullptr : 952 &verbose_methods_, 953 new PassManagerOptions(pass_manager_options), 954 init_failure_output_.get(), 955 abort_on_hard_verifier_error)); 956 957 // Done with usage checks, enable watchdog if requested 958 if (watch_dog_enabled) { 959 watchdog_.reset(new WatchDog(true)); 960 } 961 962 // Fill some values into the key-value store for the oat header. 963 key_value_store_.reset(new SafeMap<std::string, std::string>()); 964 965 // Insert some compiler things. 966 { 967 std::ostringstream oss; 968 for (int i = 0; i < argc; ++i) { 969 if (i > 0) { 970 oss << ' '; 971 } 972 oss << argv[i]; 973 } 974 key_value_store_->Put(OatHeader::kDex2OatCmdLineKey, oss.str()); 975 oss.str(""); // Reset. 976 oss << kRuntimeISA; 977 key_value_store_->Put(OatHeader::kDex2OatHostKey, oss.str()); 978 key_value_store_->Put(OatHeader::kPicKey, compile_pic ? "true" : "false"); 979 } 980 } 981 982 // Check whether the oat output file is writable, and open it for later. Also open a swap file, 983 // if a name is given. 984 bool OpenFile() { 985 bool create_file = !oat_unstripped_.empty(); // as opposed to using open file descriptor 986 if (create_file) { 987 oat_file_.reset(OS::CreateEmptyFile(oat_unstripped_.c_str())); 988 if (oat_location_.empty()) { 989 oat_location_ = oat_filename_; 990 } 991 } else { 992 oat_file_.reset(new File(oat_fd_, oat_location_, true)); 993 oat_file_->DisableAutoClose(); 994 if (oat_file_->SetLength(0) != 0) { 995 PLOG(WARNING) << "Truncating oat file " << oat_location_ << " failed."; 996 } 997 } 998 if (oat_file_.get() == nullptr) { 999 PLOG(ERROR) << "Failed to create oat file: " << oat_location_; 1000 return false; 1001 } 1002 if (create_file && fchmod(oat_file_->Fd(), 0644) != 0) { 1003 PLOG(ERROR) << "Failed to make oat file world readable: " << oat_location_; 1004 oat_file_->Erase(); 1005 return false; 1006 } 1007 1008 // Swap file handling. 1009 // 1010 // If the swap fd is not -1, we assume this is the file descriptor of an open but unlinked file 1011 // that we can use for swap. 1012 // 1013 // If the swap fd is -1 and we have a swap-file string, open the given file as a swap file. We 1014 // will immediately unlink to satisfy the swap fd assumption. 1015 if (swap_fd_ == -1 && !swap_file_name_.empty()) { 1016 std::unique_ptr<File> swap_file(OS::CreateEmptyFile(swap_file_name_.c_str())); 1017 if (swap_file.get() == nullptr) { 1018 PLOG(ERROR) << "Failed to create swap file: " << swap_file_name_; 1019 return false; 1020 } 1021 swap_fd_ = swap_file->Fd(); 1022 swap_file->MarkUnchecked(); // We don't we to track this, it will be unlinked immediately. 1023 swap_file->DisableAutoClose(); // We'll handle it ourselves, the File object will be 1024 // released immediately. 1025 unlink(swap_file_name_.c_str()); 1026 } 1027 1028 return true; 1029 } 1030 1031 void EraseOatFile() { 1032 DCHECK(oat_file_.get() != nullptr); 1033 oat_file_->Erase(); 1034 oat_file_.reset(); 1035 } 1036 1037 // Set up the environment for compilation. Includes starting the runtime and loading/opening the 1038 // boot class path. 1039 bool Setup() { 1040 TimingLogger::ScopedTiming t("dex2oat Setup", timings_); 1041 RuntimeOptions runtime_options; 1042 art::MemMap::Init(); // For ZipEntry::ExtractToMemMap. 1043 if (boot_image_option_.empty()) { 1044 std::string boot_class_path = "-Xbootclasspath:"; 1045 boot_class_path += Join(dex_filenames_, ':'); 1046 runtime_options.push_back(std::make_pair(boot_class_path, nullptr)); 1047 std::string boot_class_path_locations = "-Xbootclasspath-locations:"; 1048 boot_class_path_locations += Join(dex_locations_, ':'); 1049 runtime_options.push_back(std::make_pair(boot_class_path_locations, nullptr)); 1050 } else { 1051 runtime_options.push_back(std::make_pair(boot_image_option_, nullptr)); 1052 } 1053 for (size_t i = 0; i < runtime_args_.size(); i++) { 1054 runtime_options.push_back(std::make_pair(runtime_args_[i], nullptr)); 1055 } 1056 1057 verification_results_.reset(new VerificationResults(compiler_options_.get())); 1058 callbacks_.reset(new QuickCompilerCallbacks( 1059 verification_results_.get(), 1060 &method_inliner_map_, 1061 image_ ? 1062 CompilerCallbacks::CallbackMode::kCompileBootImage : 1063 CompilerCallbacks::CallbackMode::kCompileApp)); 1064 runtime_options.push_back(std::make_pair("compilercallbacks", callbacks_.get())); 1065 runtime_options.push_back( 1066 std::make_pair("imageinstructionset", GetInstructionSetString(instruction_set_))); 1067 1068 // Only allow no boot image for the runtime if we're compiling one. When we compile an app, 1069 // we don't want fallback mode, it will abort as we do not push a boot classpath (it might 1070 // have been stripped in preopting, anyways). 1071 if (!image_) { 1072 runtime_options.push_back(std::make_pair("-Xno-dex-file-fallback", nullptr)); 1073 } 1074 1075 if (!CreateRuntime(runtime_options)) { 1076 return false; 1077 } 1078 1079 // Runtime::Create acquired the mutator_lock_ that is normally given away when we 1080 // Runtime::Start, give it away now so that we don't starve GC. 1081 Thread* self = Thread::Current(); 1082 self->TransitionFromRunnableToSuspended(kNative); 1083 // If we're doing the image, override the compiler filter to force full compilation. Must be 1084 // done ahead of WellKnownClasses::Init that causes verification. Note: doesn't force 1085 // compilation of class initializers. 1086 // Whilst we're in native take the opportunity to initialize well known classes. 1087 WellKnownClasses::Init(self->GetJniEnv()); 1088 1089 // If --image-classes was specified, calculate the full list of classes to include in the image 1090 if (image_classes_filename_ != nullptr) { 1091 std::string error_msg; 1092 if (image_classes_zip_filename_ != nullptr) { 1093 image_classes_.reset(ReadImageClassesFromZip(image_classes_zip_filename_, 1094 image_classes_filename_, 1095 &error_msg)); 1096 } else { 1097 image_classes_.reset(ReadImageClassesFromFile(image_classes_filename_)); 1098 } 1099 if (image_classes_.get() == nullptr) { 1100 LOG(ERROR) << "Failed to create list of image classes from '" << image_classes_filename_ << 1101 "': " << error_msg; 1102 return false; 1103 } 1104 } else if (image_) { 1105 image_classes_.reset(new std::set<std::string>); 1106 } 1107 // If --compiled-classes was specified, calculate the full list of classes to compile in the 1108 // image. 1109 if (compiled_classes_filename_ != nullptr) { 1110 std::string error_msg; 1111 if (compiled_classes_zip_filename_ != nullptr) { 1112 compiled_classes_.reset(ReadImageClassesFromZip(compiled_classes_zip_filename_, 1113 compiled_classes_filename_, 1114 &error_msg)); 1115 } else { 1116 compiled_classes_.reset(ReadImageClassesFromFile(compiled_classes_filename_)); 1117 } 1118 if (compiled_classes_.get() == nullptr) { 1119 LOG(ERROR) << "Failed to create list of compiled classes from '" 1120 << compiled_classes_filename_ << "': " << error_msg; 1121 return false; 1122 } 1123 } else if (image_) { 1124 compiled_classes_.reset(nullptr); // By default compile everything. 1125 } 1126 1127 if (boot_image_option_.empty()) { 1128 dex_files_ = Runtime::Current()->GetClassLinker()->GetBootClassPath(); 1129 } else { 1130 if (dex_filenames_.empty()) { 1131 ATRACE_BEGIN("Opening zip archive from file descriptor"); 1132 std::string error_msg; 1133 std::unique_ptr<ZipArchive> zip_archive(ZipArchive::OpenFromFd(zip_fd_, 1134 zip_location_.c_str(), 1135 &error_msg)); 1136 if (zip_archive.get() == nullptr) { 1137 LOG(ERROR) << "Failed to open zip from file descriptor for '" << zip_location_ << "': " 1138 << error_msg; 1139 return false; 1140 } 1141 if (!DexFile::OpenFromZip(*zip_archive.get(), zip_location_, &error_msg, &opened_dex_files_)) { 1142 LOG(ERROR) << "Failed to open dex from file descriptor for zip file '" << zip_location_ 1143 << "': " << error_msg; 1144 return false; 1145 } 1146 for (auto& dex_file : opened_dex_files_) { 1147 dex_files_.push_back(dex_file.get()); 1148 } 1149 ATRACE_END(); 1150 } else { 1151 size_t failure_count = OpenDexFiles(dex_filenames_, dex_locations_, &opened_dex_files_); 1152 if (failure_count > 0) { 1153 LOG(ERROR) << "Failed to open some dex files: " << failure_count; 1154 return false; 1155 } 1156 for (auto& dex_file : opened_dex_files_) { 1157 dex_files_.push_back(dex_file.get()); 1158 } 1159 } 1160 1161 constexpr bool kSaveDexInput = false; 1162 if (kSaveDexInput) { 1163 for (size_t i = 0; i < dex_files_.size(); ++i) { 1164 const DexFile* dex_file = dex_files_[i]; 1165 std::string tmp_file_name(StringPrintf("/data/local/tmp/dex2oat.%d.%zd.dex", 1166 getpid(), i)); 1167 std::unique_ptr<File> tmp_file(OS::CreateEmptyFile(tmp_file_name.c_str())); 1168 if (tmp_file.get() == nullptr) { 1169 PLOG(ERROR) << "Failed to open file " << tmp_file_name 1170 << ". Try: adb shell chmod 777 /data/local/tmp"; 1171 continue; 1172 } 1173 // This is just dumping files for debugging. Ignore errors, and leave remnants. 1174 UNUSED(tmp_file->WriteFully(dex_file->Begin(), dex_file->Size())); 1175 UNUSED(tmp_file->Flush()); 1176 UNUSED(tmp_file->Close()); 1177 LOG(INFO) << "Wrote input to " << tmp_file_name; 1178 } 1179 } 1180 } 1181 // Ensure opened dex files are writable for dex-to-dex transformations. 1182 for (const auto& dex_file : dex_files_) { 1183 if (!dex_file->EnableWrite()) { 1184 PLOG(ERROR) << "Failed to make .dex file writeable '" << dex_file->GetLocation() << "'\n"; 1185 } 1186 } 1187 1188 // If we use a swap file, ensure we are above the threshold to make it necessary. 1189 if (swap_fd_ != -1) { 1190 if (!UseSwap(image_, dex_files_)) { 1191 close(swap_fd_); 1192 swap_fd_ = -1; 1193 LOG(INFO) << "Decided to run without swap."; 1194 } else { 1195 LOG(INFO) << "Accepted running with swap."; 1196 } 1197 } 1198 // Note that dex2oat won't close the swap_fd_. The compiler driver's swap space will do that. 1199 1200 /* 1201 * If we're not in interpret-only or verify-none mode, go ahead and compile small applications. 1202 * Don't bother to check if we're doing the image. 1203 */ 1204 if (!image_ && 1205 compiler_options_->IsCompilationEnabled() && 1206 compiler_kind_ == Compiler::kQuick) { 1207 size_t num_methods = 0; 1208 for (size_t i = 0; i != dex_files_.size(); ++i) { 1209 const DexFile* dex_file = dex_files_[i]; 1210 CHECK(dex_file != nullptr); 1211 num_methods += dex_file->NumMethodIds(); 1212 } 1213 if (num_methods <= compiler_options_->GetNumDexMethodsThreshold()) { 1214 compiler_options_->SetCompilerFilter(CompilerOptions::kSpeed); 1215 VLOG(compiler) << "Below method threshold, compiling anyways"; 1216 } 1217 } 1218 1219 return true; 1220 } 1221 1222 // Create and invoke the compiler driver. This will compile all the dex files. 1223 void Compile() { 1224 TimingLogger::ScopedTiming t("dex2oat Compile", timings_); 1225 compiler_phases_timings_.reset(new CumulativeLogger("compilation times")); 1226 1227 // Handle and ClassLoader creation needs to come after Runtime::Create 1228 jobject class_loader = nullptr; 1229 Thread* self = Thread::Current(); 1230 if (!boot_image_option_.empty()) { 1231 ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 1232 OpenClassPathFiles(runtime_->GetClassPathString(), dex_files_, &class_path_files_); 1233 ScopedObjectAccess soa(self); 1234 1235 // Classpath: first the class-path given. 1236 std::vector<const DexFile*> class_path_files; 1237 for (auto& class_path_file : class_path_files_) { 1238 class_path_files.push_back(class_path_file.get()); 1239 } 1240 // Then the dex files we'll compile. Thus we'll resolve the class-path first. 1241 class_path_files.insert(class_path_files.end(), dex_files_.begin(), dex_files_.end()); 1242 1243 class_loader = class_linker->CreatePathClassLoader(self, class_path_files); 1244 } 1245 1246 driver_.reset(new CompilerDriver(compiler_options_.get(), 1247 verification_results_.get(), 1248 &method_inliner_map_, 1249 compiler_kind_, 1250 instruction_set_, 1251 instruction_set_features_.get(), 1252 image_, 1253 image_classes_.release(), 1254 compiled_classes_.release(), 1255 thread_count_, 1256 dump_stats_, 1257 dump_passes_, 1258 dump_cfg_file_name_, 1259 compiler_phases_timings_.get(), 1260 swap_fd_, 1261 profile_file_)); 1262 1263 driver_->CompileAll(class_loader, dex_files_, timings_); 1264 } 1265 1266 // Notes on the interleaving of creating the image and oat file to 1267 // ensure the references between the two are correct. 1268 // 1269 // Currently we have a memory layout that looks something like this: 1270 // 1271 // +--------------+ 1272 // | image | 1273 // +--------------+ 1274 // | boot oat | 1275 // +--------------+ 1276 // | alloc spaces | 1277 // +--------------+ 1278 // 1279 // There are several constraints on the loading of the image and boot.oat. 1280 // 1281 // 1. The image is expected to be loaded at an absolute address and 1282 // contains Objects with absolute pointers within the image. 1283 // 1284 // 2. There are absolute pointers from Methods in the image to their 1285 // code in the oat. 1286 // 1287 // 3. There are absolute pointers from the code in the oat to Methods 1288 // in the image. 1289 // 1290 // 4. There are absolute pointers from code in the oat to other code 1291 // in the oat. 1292 // 1293 // To get this all correct, we go through several steps. 1294 // 1295 // 1. We prepare offsets for all data in the oat file and calculate 1296 // the oat data size and code size. During this stage, we also set 1297 // oat code offsets in methods for use by the image writer. 1298 // 1299 // 2. We prepare offsets for the objects in the image and calculate 1300 // the image size. 1301 // 1302 // 3. We create the oat file. Originally this was just our own proprietary 1303 // file but now it is contained within an ELF dynamic object (aka an .so 1304 // file). Since we know the image size and oat data size and code size we 1305 // can prepare the ELF headers and we then know the ELF memory segment 1306 // layout and we can now resolve all references. The compiler provides 1307 // LinkerPatch information in each CompiledMethod and we resolve these, 1308 // using the layout information and image object locations provided by 1309 // image writer, as we're writing the method code. 1310 // 1311 // 4. We create the image file. It needs to know where the oat file 1312 // will be loaded after itself. Originally when oat file was simply 1313 // memory mapped so we could predict where its contents were based 1314 // on the file size. Now that it is an ELF file, we need to inspect 1315 // the ELF file to understand the in memory segment layout including 1316 // where the oat header is located within. 1317 // TODO: We could just remember this information from step 3. 1318 // 1319 // 5. We fixup the ELF program headers so that dlopen will try to 1320 // load the .so at the desired location at runtime by offsetting the 1321 // Elf32_Phdr.p_vaddr values by the desired base address. 1322 // TODO: Do this in step 3. We already know the layout there. 1323 // 1324 // Steps 1.-3. are done by the CreateOatFile() above, steps 4.-5. 1325 // are done by the CreateImageFile() below. 1326 1327 1328 // Write out the generated code part. Calls the OatWriter and ElfBuilder. Also prepares the 1329 // ImageWriter, if necessary. 1330 // Note: Flushing (and closing) the file is the caller's responsibility, except for the failure 1331 // case (when the file will be explicitly erased). 1332 bool CreateOatFile() { 1333 CHECK(key_value_store_.get() != nullptr); 1334 1335 TimingLogger::ScopedTiming t("dex2oat Oat", timings_); 1336 1337 std::unique_ptr<OatWriter> oat_writer; 1338 { 1339 TimingLogger::ScopedTiming t2("dex2oat OatWriter", timings_); 1340 std::string image_file_location; 1341 uint32_t image_file_location_oat_checksum = 0; 1342 uintptr_t image_file_location_oat_data_begin = 0; 1343 int32_t image_patch_delta = 0; 1344 if (image_) { 1345 PrepareImageWriter(image_base_); 1346 } else { 1347 TimingLogger::ScopedTiming t3("Loading image checksum", timings_); 1348 gc::space::ImageSpace* image_space = Runtime::Current()->GetHeap()->GetImageSpace(); 1349 image_file_location_oat_checksum = image_space->GetImageHeader().GetOatChecksum(); 1350 image_file_location_oat_data_begin = 1351 reinterpret_cast<uintptr_t>(image_space->GetImageHeader().GetOatDataBegin()); 1352 image_file_location = image_space->GetImageFilename(); 1353 image_patch_delta = image_space->GetImageHeader().GetPatchDelta(); 1354 } 1355 1356 if (!image_file_location.empty()) { 1357 key_value_store_->Put(OatHeader::kImageLocationKey, image_file_location); 1358 } 1359 1360 oat_writer.reset(new OatWriter(dex_files_, image_file_location_oat_checksum, 1361 image_file_location_oat_data_begin, 1362 image_patch_delta, 1363 driver_.get(), 1364 image_writer_.get(), 1365 timings_, 1366 key_value_store_.get())); 1367 } 1368 1369 if (image_) { 1370 // The OatWriter constructor has already updated offsets in methods and we need to 1371 // prepare method offsets in the image address space for direct method patching. 1372 TimingLogger::ScopedTiming t2("dex2oat Prepare image address space", timings_); 1373 if (!image_writer_->PrepareImageAddressSpace()) { 1374 LOG(ERROR) << "Failed to prepare image address space."; 1375 return false; 1376 } 1377 } 1378 1379 { 1380 TimingLogger::ScopedTiming t2("dex2oat Write ELF", timings_); 1381 if (!driver_->WriteElf(android_root_, is_host_, dex_files_, oat_writer.get(), 1382 oat_file_.get())) { 1383 LOG(ERROR) << "Failed to write ELF file " << oat_file_->GetPath(); 1384 return false; 1385 } 1386 } 1387 1388 VLOG(compiler) << "Oat file written successfully (unstripped): " << oat_location_; 1389 return true; 1390 } 1391 1392 // If we are compiling an image, invoke the image creation routine. Else just skip. 1393 bool HandleImage() { 1394 if (image_) { 1395 TimingLogger::ScopedTiming t("dex2oat ImageWriter", timings_); 1396 if (!CreateImageFile()) { 1397 return false; 1398 } 1399 VLOG(compiler) << "Image written successfully: " << image_filename_; 1400 } 1401 return true; 1402 } 1403 1404 // Create a copy from unstripped to stripped. 1405 bool CopyUnstrippedToStripped() { 1406 // If we don't want to strip in place, copy from unstripped location to stripped location. 1407 // We need to strip after image creation because FixupElf needs to use .strtab. 1408 if (oat_unstripped_ != oat_stripped_) { 1409 // If the oat file is still open, flush it. 1410 if (oat_file_.get() != nullptr && oat_file_->IsOpened()) { 1411 if (!FlushCloseOatFile()) { 1412 return false; 1413 } 1414 } 1415 1416 TimingLogger::ScopedTiming t("dex2oat OatFile copy", timings_); 1417 std::unique_ptr<File> in(OS::OpenFileForReading(oat_unstripped_.c_str())); 1418 std::unique_ptr<File> out(OS::CreateEmptyFile(oat_stripped_.c_str())); 1419 size_t buffer_size = 8192; 1420 std::unique_ptr<uint8_t[]> buffer(new uint8_t[buffer_size]); 1421 while (true) { 1422 int bytes_read = TEMP_FAILURE_RETRY(read(in->Fd(), buffer.get(), buffer_size)); 1423 if (bytes_read <= 0) { 1424 break; 1425 } 1426 bool write_ok = out->WriteFully(buffer.get(), bytes_read); 1427 CHECK(write_ok); 1428 } 1429 if (out->FlushCloseOrErase() != 0) { 1430 PLOG(ERROR) << "Failed to flush and close copied oat file: " << oat_stripped_; 1431 return false; 1432 } 1433 VLOG(compiler) << "Oat file copied successfully (stripped): " << oat_stripped_; 1434 } 1435 return true; 1436 } 1437 1438 bool FlushOatFile() { 1439 if (oat_file_.get() != nullptr) { 1440 TimingLogger::ScopedTiming t2("dex2oat Flush ELF", timings_); 1441 if (oat_file_->Flush() != 0) { 1442 PLOG(ERROR) << "Failed to flush oat file: " << oat_location_ << " / " 1443 << oat_filename_; 1444 oat_file_->Erase(); 1445 return false; 1446 } 1447 } 1448 return true; 1449 } 1450 1451 bool FlushCloseOatFile() { 1452 if (oat_file_.get() != nullptr) { 1453 std::unique_ptr<File> tmp(oat_file_.release()); 1454 if (tmp->FlushCloseOrErase() != 0) { 1455 PLOG(ERROR) << "Failed to flush and close oat file: " << oat_location_ << " / " 1456 << oat_filename_; 1457 return false; 1458 } 1459 } 1460 return true; 1461 } 1462 1463 void DumpTiming() { 1464 if (dump_timing_ || (dump_slow_timing_ && timings_->GetTotalNs() > MsToNs(1000))) { 1465 LOG(INFO) << Dumpable<TimingLogger>(*timings_); 1466 } 1467 if (dump_passes_) { 1468 LOG(INFO) << Dumpable<CumulativeLogger>(*driver_->GetTimingsLogger()); 1469 } 1470 } 1471 1472 CompilerOptions* GetCompilerOptions() const { 1473 return compiler_options_.get(); 1474 } 1475 1476 bool IsImage() const { 1477 return image_; 1478 } 1479 1480 bool IsHost() const { 1481 return is_host_; 1482 } 1483 1484 private: 1485 static size_t OpenDexFiles(const std::vector<const char*>& dex_filenames, 1486 const std::vector<const char*>& dex_locations, 1487 std::vector<std::unique_ptr<const DexFile>>* dex_files) { 1488 DCHECK(dex_files != nullptr) << "OpenDexFiles out-param is NULL"; 1489 size_t failure_count = 0; 1490 for (size_t i = 0; i < dex_filenames.size(); i++) { 1491 const char* dex_filename = dex_filenames[i]; 1492 const char* dex_location = dex_locations[i]; 1493 ATRACE_BEGIN(StringPrintf("Opening dex file '%s'", dex_filenames[i]).c_str()); 1494 std::string error_msg; 1495 if (!OS::FileExists(dex_filename)) { 1496 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 1497 continue; 1498 } 1499 if (!DexFile::Open(dex_filename, dex_location, &error_msg, dex_files)) { 1500 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 1501 ++failure_count; 1502 } 1503 ATRACE_END(); 1504 } 1505 return failure_count; 1506 } 1507 1508 // Returns true if dex_files has a dex with the named location. We compare canonical locations, 1509 // so that relative and absolute paths will match. Not caching for the dex_files isn't very 1510 // efficient, but under normal circumstances the list is neither large nor is this part too 1511 // sensitive. 1512 static bool DexFilesContains(const std::vector<const DexFile*>& dex_files, 1513 const std::string& location) { 1514 std::string canonical_location(DexFile::GetDexCanonicalLocation(location.c_str())); 1515 for (size_t i = 0; i < dex_files.size(); ++i) { 1516 if (DexFile::GetDexCanonicalLocation(dex_files[i]->GetLocation().c_str()) == 1517 canonical_location) { 1518 return true; 1519 } 1520 } 1521 return false; 1522 } 1523 1524 // Appends to opened_dex_files any elements of class_path that dex_files 1525 // doesn't already contain. This will open those dex files as necessary. 1526 static void OpenClassPathFiles(const std::string& class_path, 1527 std::vector<const DexFile*> dex_files, 1528 std::vector<std::unique_ptr<const DexFile>>* opened_dex_files) { 1529 DCHECK(opened_dex_files != nullptr) << "OpenClassPathFiles out-param is NULL"; 1530 std::vector<std::string> parsed; 1531 Split(class_path, ':', &parsed); 1532 // Take Locks::mutator_lock_ so that lock ordering on the ClassLinker::dex_lock_ is maintained. 1533 ScopedObjectAccess soa(Thread::Current()); 1534 for (size_t i = 0; i < parsed.size(); ++i) { 1535 if (DexFilesContains(dex_files, parsed[i])) { 1536 continue; 1537 } 1538 std::string error_msg; 1539 if (!DexFile::Open(parsed[i].c_str(), parsed[i].c_str(), &error_msg, opened_dex_files)) { 1540 LOG(WARNING) << "Failed to open dex file '" << parsed[i] << "': " << error_msg; 1541 } 1542 } 1543 } 1544 1545 // Create a runtime necessary for compilation. 1546 bool CreateRuntime(const RuntimeOptions& runtime_options) 1547 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_) { 1548 if (!Runtime::Create(runtime_options, false)) { 1549 LOG(ERROR) << "Failed to create runtime"; 1550 return false; 1551 } 1552 Runtime* runtime = Runtime::Current(); 1553 runtime->SetInstructionSet(instruction_set_); 1554 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 1555 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 1556 if (!runtime->HasCalleeSaveMethod(type)) { 1557 runtime->SetCalleeSaveMethod(runtime->CreateCalleeSaveMethod(), type); 1558 } 1559 } 1560 runtime->GetClassLinker()->FixupDexCaches(runtime->GetResolutionMethod()); 1561 1562 // Initialize maps for unstarted runtime. This needs to be here, as running clinits needs this 1563 // set up. 1564 interpreter::UnstartedRuntimeInitialize(); 1565 1566 runtime->GetClassLinker()->RunRootClinits(); 1567 runtime_ = runtime; 1568 1569 return true; 1570 } 1571 1572 void PrepareImageWriter(uintptr_t image_base) { 1573 image_writer_.reset(new ImageWriter(*driver_, image_base, compiler_options_->GetCompilePic())); 1574 } 1575 1576 // Let the ImageWriter write the image file. If we do not compile PIC, also fix up the oat file. 1577 bool CreateImageFile() 1578 LOCKS_EXCLUDED(Locks::mutator_lock_) { 1579 CHECK(image_writer_ != nullptr); 1580 if (!image_writer_->Write(image_filename_, oat_unstripped_, oat_location_)) { 1581 LOG(ERROR) << "Failed to create image file " << image_filename_; 1582 return false; 1583 } 1584 uintptr_t oat_data_begin = image_writer_->GetOatDataBegin(); 1585 1586 // Destroy ImageWriter before doing FixupElf. 1587 image_writer_.reset(); 1588 1589 // Do not fix up the ELF file if we are --compile-pic 1590 if (!compiler_options_->GetCompilePic()) { 1591 std::unique_ptr<File> oat_file(OS::OpenFileReadWrite(oat_unstripped_.c_str())); 1592 if (oat_file.get() == nullptr) { 1593 PLOG(ERROR) << "Failed to open ELF file: " << oat_unstripped_; 1594 return false; 1595 } 1596 1597 if (!ElfWriter::Fixup(oat_file.get(), oat_data_begin)) { 1598 oat_file->Erase(); 1599 LOG(ERROR) << "Failed to fixup ELF file " << oat_file->GetPath(); 1600 return false; 1601 } 1602 1603 if (oat_file->FlushCloseOrErase()) { 1604 PLOG(ERROR) << "Failed to flush and close fixed ELF file " << oat_file->GetPath(); 1605 return false; 1606 } 1607 } 1608 1609 return true; 1610 } 1611 1612 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 1613 static std::set<std::string>* ReadImageClassesFromFile(const char* image_classes_filename) { 1614 std::unique_ptr<std::ifstream> image_classes_file(new std::ifstream(image_classes_filename, 1615 std::ifstream::in)); 1616 if (image_classes_file.get() == nullptr) { 1617 LOG(ERROR) << "Failed to open image classes file " << image_classes_filename; 1618 return nullptr; 1619 } 1620 std::unique_ptr<std::set<std::string>> result(ReadImageClasses(*image_classes_file)); 1621 image_classes_file->close(); 1622 return result.release(); 1623 } 1624 1625 static std::set<std::string>* ReadImageClasses(std::istream& image_classes_stream) { 1626 std::unique_ptr<std::set<std::string>> image_classes(new std::set<std::string>); 1627 while (image_classes_stream.good()) { 1628 std::string dot; 1629 std::getline(image_classes_stream, dot); 1630 if (StartsWith(dot, "#") || dot.empty()) { 1631 continue; 1632 } 1633 std::string descriptor(DotToDescriptor(dot.c_str())); 1634 image_classes->insert(descriptor); 1635 } 1636 return image_classes.release(); 1637 } 1638 1639 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 1640 static std::set<std::string>* ReadImageClassesFromZip(const char* zip_filename, 1641 const char* image_classes_filename, 1642 std::string* error_msg) { 1643 std::unique_ptr<ZipArchive> zip_archive(ZipArchive::Open(zip_filename, error_msg)); 1644 if (zip_archive.get() == nullptr) { 1645 return nullptr; 1646 } 1647 std::unique_ptr<ZipEntry> zip_entry(zip_archive->Find(image_classes_filename, error_msg)); 1648 if (zip_entry.get() == nullptr) { 1649 *error_msg = StringPrintf("Failed to find '%s' within '%s': %s", image_classes_filename, 1650 zip_filename, error_msg->c_str()); 1651 return nullptr; 1652 } 1653 std::unique_ptr<MemMap> image_classes_file(zip_entry->ExtractToMemMap(zip_filename, 1654 image_classes_filename, 1655 error_msg)); 1656 if (image_classes_file.get() == nullptr) { 1657 *error_msg = StringPrintf("Failed to extract '%s' from '%s': %s", image_classes_filename, 1658 zip_filename, error_msg->c_str()); 1659 return nullptr; 1660 } 1661 const std::string image_classes_string(reinterpret_cast<char*>(image_classes_file->Begin()), 1662 image_classes_file->Size()); 1663 std::istringstream image_classes_stream(image_classes_string); 1664 return ReadImageClasses(image_classes_stream); 1665 } 1666 1667 void LogCompletionTime() { 1668 // Note: when creation of a runtime fails, e.g., when trying to compile an app but when there 1669 // is no image, there won't be a Runtime::Current(). 1670 // Note: driver creation can fail when loading an invalid dex file. 1671 LOG(INFO) << "dex2oat took " << PrettyDuration(NanoTime() - start_ns_) 1672 << " (threads: " << thread_count_ << ") " 1673 << ((Runtime::Current() != nullptr && driver_.get() != nullptr) ? 1674 driver_->GetMemoryUsageString(kIsDebugBuild || VLOG_IS_ON(compiler)) : 1675 ""); 1676 } 1677 1678 std::unique_ptr<CompilerOptions> compiler_options_; 1679 Compiler::Kind compiler_kind_; 1680 1681 InstructionSet instruction_set_; 1682 std::unique_ptr<const InstructionSetFeatures> instruction_set_features_; 1683 1684 std::unique_ptr<SafeMap<std::string, std::string> > key_value_store_; 1685 1686 std::unique_ptr<VerificationResults> verification_results_; 1687 DexFileToMethodInlinerMap method_inliner_map_; 1688 std::unique_ptr<QuickCompilerCallbacks> callbacks_; 1689 1690 // Ownership for the class path files. 1691 std::vector<std::unique_ptr<const DexFile>> class_path_files_; 1692 1693 // Not a unique_ptr as we want to just exit on non-debug builds, not bringing the runtime down 1694 // in an orderly fashion. The destructor takes care of deleting this. 1695 Runtime* runtime_; 1696 1697 size_t thread_count_; 1698 uint64_t start_ns_; 1699 std::unique_ptr<WatchDog> watchdog_; 1700 std::unique_ptr<File> oat_file_; 1701 std::string oat_stripped_; 1702 std::string oat_unstripped_; 1703 std::string oat_location_; 1704 std::string oat_filename_; 1705 int oat_fd_; 1706 std::vector<const char*> dex_filenames_; 1707 std::vector<const char*> dex_locations_; 1708 int zip_fd_; 1709 std::string zip_location_; 1710 std::string boot_image_option_; 1711 std::vector<const char*> runtime_args_; 1712 std::string image_filename_; 1713 uintptr_t image_base_; 1714 const char* image_classes_zip_filename_; 1715 const char* image_classes_filename_; 1716 const char* compiled_classes_zip_filename_; 1717 const char* compiled_classes_filename_; 1718 std::unique_ptr<std::set<std::string>> image_classes_; 1719 std::unique_ptr<std::set<std::string>> compiled_classes_; 1720 bool image_; 1721 std::unique_ptr<ImageWriter> image_writer_; 1722 bool is_host_; 1723 std::string android_root_; 1724 std::vector<const DexFile*> dex_files_; 1725 std::vector<std::unique_ptr<const DexFile>> opened_dex_files_; 1726 std::unique_ptr<CompilerDriver> driver_; 1727 std::vector<std::string> verbose_methods_; 1728 bool dump_stats_; 1729 bool dump_passes_; 1730 bool dump_timing_; 1731 bool dump_slow_timing_; 1732 std::string dump_cfg_file_name_; 1733 std::string swap_file_name_; 1734 int swap_fd_; 1735 std::string profile_file_; // Profile file to use 1736 TimingLogger* timings_; 1737 std::unique_ptr<CumulativeLogger> compiler_phases_timings_; 1738 std::unique_ptr<std::ostream> init_failure_output_; 1739 1740 DISALLOW_IMPLICIT_CONSTRUCTORS(Dex2Oat); 1741}; 1742 1743const unsigned int WatchDog::kWatchDogTimeoutSeconds; 1744 1745static void b13564922() { 1746#if defined(__linux__) && defined(__arm__) 1747 int major, minor; 1748 struct utsname uts; 1749 if (uname(&uts) != -1 && 1750 sscanf(uts.release, "%d.%d", &major, &minor) == 2 && 1751 ((major < 3) || ((major == 3) && (minor < 4)))) { 1752 // Kernels before 3.4 don't handle the ASLR well and we can run out of address 1753 // space (http://b/13564922). Work around the issue by inhibiting further mmap() randomization. 1754 int old_personality = personality(0xffffffff); 1755 if ((old_personality & ADDR_NO_RANDOMIZE) == 0) { 1756 int new_personality = personality(old_personality | ADDR_NO_RANDOMIZE); 1757 if (new_personality == -1) { 1758 LOG(WARNING) << "personality(. | ADDR_NO_RANDOMIZE) failed."; 1759 } 1760 } 1761 } 1762#endif 1763} 1764 1765static int CompileImage(Dex2Oat& dex2oat) { 1766 dex2oat.Compile(); 1767 1768 // Create the boot.oat. 1769 if (!dex2oat.CreateOatFile()) { 1770 dex2oat.EraseOatFile(); 1771 return EXIT_FAILURE; 1772 } 1773 1774 // Flush and close the boot.oat. We always expect the output file by name, and it will be 1775 // re-opened from the unstripped name. 1776 if (!dex2oat.FlushCloseOatFile()) { 1777 return EXIT_FAILURE; 1778 } 1779 1780 // Creates the boot.art and patches the boot.oat. 1781 if (!dex2oat.HandleImage()) { 1782 return EXIT_FAILURE; 1783 } 1784 1785 // When given --host, finish early without stripping. 1786 if (dex2oat.IsHost()) { 1787 dex2oat.DumpTiming(); 1788 return EXIT_SUCCESS; 1789 } 1790 1791 // Copy unstripped to stripped location, if necessary. 1792 if (!dex2oat.CopyUnstrippedToStripped()) { 1793 return EXIT_FAILURE; 1794 } 1795 1796 // FlushClose again, as stripping might have re-opened the oat file. 1797 if (!dex2oat.FlushCloseOatFile()) { 1798 return EXIT_FAILURE; 1799 } 1800 1801 dex2oat.DumpTiming(); 1802 return EXIT_SUCCESS; 1803} 1804 1805static int CompileApp(Dex2Oat& dex2oat) { 1806 dex2oat.Compile(); 1807 1808 // Create the app oat. 1809 if (!dex2oat.CreateOatFile()) { 1810 dex2oat.EraseOatFile(); 1811 return EXIT_FAILURE; 1812 } 1813 1814 // Do not close the oat file here. We might haven gotten the output file by file descriptor, 1815 // which we would lose. 1816 if (!dex2oat.FlushOatFile()) { 1817 return EXIT_FAILURE; 1818 } 1819 1820 // When given --host, finish early without stripping. 1821 if (dex2oat.IsHost()) { 1822 if (!dex2oat.FlushCloseOatFile()) { 1823 return EXIT_FAILURE; 1824 } 1825 1826 dex2oat.DumpTiming(); 1827 return EXIT_SUCCESS; 1828 } 1829 1830 // Copy unstripped to stripped location, if necessary. This will implicitly flush & close the 1831 // unstripped version. If this is given, we expect to be able to open writable files by name. 1832 if (!dex2oat.CopyUnstrippedToStripped()) { 1833 return EXIT_FAILURE; 1834 } 1835 1836 // Flush and close the file. 1837 if (!dex2oat.FlushCloseOatFile()) { 1838 return EXIT_FAILURE; 1839 } 1840 1841 dex2oat.DumpTiming(); 1842 return EXIT_SUCCESS; 1843} 1844 1845static int dex2oat(int argc, char** argv) { 1846 b13564922(); 1847 1848 TimingLogger timings("compiler", false, false); 1849 1850 Dex2Oat dex2oat(&timings); 1851 1852 // Parse arguments. Argument mistakes will lead to exit(EXIT_FAILURE) in UsageError. 1853 dex2oat.ParseArgs(argc, argv); 1854 1855 // Check early that the result of compilation can be written 1856 if (!dex2oat.OpenFile()) { 1857 return EXIT_FAILURE; 1858 } 1859 1860 LOG(INFO) << CommandLine(); 1861 1862 if (!dex2oat.Setup()) { 1863 dex2oat.EraseOatFile(); 1864 return EXIT_FAILURE; 1865 } 1866 1867 if (dex2oat.IsImage()) { 1868 return CompileImage(dex2oat); 1869 } else { 1870 return CompileApp(dex2oat); 1871 } 1872} 1873} // namespace art 1874 1875int main(int argc, char** argv) { 1876 int result = art::dex2oat(argc, argv); 1877 // Everything was done, do an explicit exit here to avoid running Runtime destructors that take 1878 // time (bug 10645725) unless we're a debug build or running on valgrind. Note: The Dex2Oat class 1879 // should not destruct the runtime in this case. 1880 if (!art::kIsDebugBuild && (RUNNING_ON_VALGRIND == 0)) { 1881 exit(result); 1882 } 1883 return result; 1884} 1885