dex2oat.cc revision 41b175aba41c9365a1c53b8a1afbd17129c87c14
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 <inttypes.h> 18#include <stdio.h> 19#include <stdlib.h> 20#include <sys/stat.h> 21#include <valgrind.h> 22 23#include <fstream> 24#include <iostream> 25#include <sstream> 26#include <string> 27#include <unordered_set> 28#include <vector> 29 30#if defined(__linux__) && defined(__arm__) 31#include <sys/personality.h> 32#include <sys/utsname.h> 33#endif 34 35#define ATRACE_TAG ATRACE_TAG_DALVIK 36#include <cutils/trace.h> 37 38#include "arch/instruction_set_features.h" 39#include "arch/mips/instruction_set_features_mips.h" 40#include "base/dumpable.h" 41#include "base/macros.h" 42#include "base/stl_util.h" 43#include "base/stringpiece.h" 44#include "base/time_utils.h" 45#include "base/timing_logger.h" 46#include "base/unix_file/fd_file.h" 47#include "class_linker.h" 48#include "compiler.h" 49#include "compiler_callbacks.h" 50#include "dex_file-inl.h" 51#include "dex/pass_manager.h" 52#include "dex/verification_results.h" 53#include "dex/quick_compiler_callbacks.h" 54#include "dex/quick/dex_file_to_method_inliner_map.h" 55#include "driver/compiler_driver.h" 56#include "driver/compiler_options.h" 57#include "elf_file.h" 58#include "elf_writer.h" 59#include "gc/space/image_space.h" 60#include "gc/space/space-inl.h" 61#include "image_writer.h" 62#include "interpreter/unstarted_runtime.h" 63#include "leb128.h" 64#include "mirror/art_method-inl.h" 65#include "mirror/class-inl.h" 66#include "mirror/class_loader.h" 67#include "mirror/object-inl.h" 68#include "mirror/object_array-inl.h" 69#include "oat_writer.h" 70#include "os.h" 71#include "runtime.h" 72#include "ScopedLocalRef.h" 73#include "scoped_thread_state_change.h" 74#include "utils.h" 75#include "vector_output_stream.h" 76#include "well_known_classes.h" 77#include "zip_archive.h" 78 79namespace art { 80 81static int original_argc; 82static char** original_argv; 83 84static std::string CommandLine() { 85 std::vector<std::string> command; 86 for (int i = 0; i < original_argc; ++i) { 87 command.push_back(original_argv[i]); 88 } 89 return Join(command, ' '); 90} 91 92static void UsageErrorV(const char* fmt, va_list ap) { 93 std::string error; 94 StringAppendV(&error, fmt, ap); 95 LOG(ERROR) << error; 96} 97 98static void UsageError(const char* fmt, ...) { 99 va_list ap; 100 va_start(ap, fmt); 101 UsageErrorV(fmt, ap); 102 va_end(ap); 103} 104 105NO_RETURN static void Usage(const char* fmt, ...) { 106 va_list ap; 107 va_start(ap, fmt); 108 UsageErrorV(fmt, ap); 109 va_end(ap); 110 111 UsageError("Command: %s", CommandLine().c_str()); 112 113 UsageError("Usage: dex2oat [options]..."); 114 UsageError(""); 115 UsageError(" -j<number>: specifies the number of threads used for compilation."); 116 UsageError(" Default is the number of detected hardware threads available on the"); 117 UsageError(" host system."); 118 UsageError(" Example: -j12"); 119 UsageError(""); 120 UsageError(" --dex-file=<dex-file>: specifies a .dex, .jar, or .apk file to compile."); 121 UsageError(" Example: --dex-file=/system/framework/core.jar"); 122 UsageError(""); 123 UsageError(" --dex-location=<dex-location>: specifies an alternative dex location to"); 124 UsageError(" encode in the oat file for the corresponding --dex-file argument."); 125 UsageError(" Example: --dex-file=/home/build/out/system/framework/core.jar"); 126 UsageError(" --dex-location=/system/framework/core.jar"); 127 UsageError(""); 128 UsageError(" --zip-fd=<file-descriptor>: specifies a file descriptor of a zip file"); 129 UsageError(" containing a classes.dex file to compile."); 130 UsageError(" Example: --zip-fd=5"); 131 UsageError(""); 132 UsageError(" --zip-location=<zip-location>: specifies a symbolic name for the file"); 133 UsageError(" corresponding to the file descriptor specified by --zip-fd."); 134 UsageError(" Example: --zip-location=/system/app/Calculator.apk"); 135 UsageError(""); 136 UsageError(" --oat-file=<file.oat>: specifies the oat output destination via a filename."); 137 UsageError(" Example: --oat-file=/system/framework/boot.oat"); 138 UsageError(""); 139 UsageError(" --oat-fd=<number>: specifies the oat output destination via a file descriptor."); 140 UsageError(" Example: --oat-fd=6"); 141 UsageError(""); 142 UsageError(" --oat-location=<oat-name>: specifies a symbolic name for the file corresponding"); 143 UsageError(" to the file descriptor specified by --oat-fd."); 144 UsageError(" Example: --oat-location=/data/dalvik-cache/system@app@Calculator.apk.oat"); 145 UsageError(""); 146 UsageError(" --oat-symbols=<file.oat>: specifies the oat output destination with full symbols."); 147 UsageError(" Example: --oat-symbols=/symbols/system/framework/boot.oat"); 148 UsageError(""); 149 UsageError(" --image=<file.art>: specifies the output image filename."); 150 UsageError(" Example: --image=/system/framework/boot.art"); 151 UsageError(""); 152 UsageError(" --image-classes=<classname-file>: specifies classes to include in an image."); 153 UsageError(" Example: --image=frameworks/base/preloaded-classes"); 154 UsageError(""); 155 UsageError(" --base=<hex-address>: specifies the base address when creating a boot image."); 156 UsageError(" Example: --base=0x50000000"); 157 UsageError(""); 158 UsageError(" --boot-image=<file.art>: provide the image file for the boot class path."); 159 UsageError(" Example: --boot-image=/system/framework/boot.art"); 160 UsageError(" Default: $ANDROID_ROOT/system/framework/boot.art"); 161 UsageError(""); 162 UsageError(" --android-root=<path>: used to locate libraries for portable linking."); 163 UsageError(" Example: --android-root=out/host/linux-x86"); 164 UsageError(" Default: $ANDROID_ROOT"); 165 UsageError(""); 166 UsageError(" --instruction-set=(arm|arm64|mips|mips64|x86|x86_64): compile for a particular"); 167 UsageError(" instruction set."); 168 UsageError(" Example: --instruction-set=x86"); 169 UsageError(" Default: arm"); 170 UsageError(""); 171 UsageError(" --instruction-set-features=...,: Specify instruction set features"); 172 UsageError(" Example: --instruction-set-features=div"); 173 UsageError(" Default: default"); 174 UsageError(""); 175 UsageError(" --compile-pic: Force indirect use of code, methods, and classes"); 176 UsageError(" Default: disabled"); 177 UsageError(""); 178 UsageError(" --compiler-backend=(Quick|Optimizing): select compiler backend"); 179 UsageError(" set."); 180 UsageError(" Example: --compiler-backend=Optimizing"); 181 if (kUseOptimizingCompiler) { 182 UsageError(" Default: Optimizing"); 183 } else { 184 UsageError(" Default: Quick"); 185 } 186 UsageError(""); 187 UsageError(" --compiler-filter=" 188 "(verify-none" 189 "|interpret-only" 190 "|space" 191 "|balanced" 192 "|speed" 193 "|everything" 194 "|time):"); 195 UsageError(" select compiler filter."); 196 UsageError(" Example: --compiler-filter=everything"); 197 UsageError(" Default: speed"); 198 UsageError(""); 199 UsageError(" --huge-method-max=<method-instruction-count>: threshold size for a huge"); 200 UsageError(" method for compiler filter tuning."); 201 UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold); 202 UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold); 203 UsageError(""); 204 UsageError(" --large-method-max=<method-instruction-count>: threshold size for a large"); 205 UsageError(" method for compiler filter tuning."); 206 UsageError(" Example: --large-method-max=%d", CompilerOptions::kDefaultLargeMethodThreshold); 207 UsageError(" Default: %d", CompilerOptions::kDefaultLargeMethodThreshold); 208 UsageError(""); 209 UsageError(" --small-method-max=<method-instruction-count>: threshold size for a small"); 210 UsageError(" method for compiler filter tuning."); 211 UsageError(" Example: --small-method-max=%d", CompilerOptions::kDefaultSmallMethodThreshold); 212 UsageError(" Default: %d", CompilerOptions::kDefaultSmallMethodThreshold); 213 UsageError(""); 214 UsageError(" --tiny-method-max=<method-instruction-count>: threshold size for a tiny"); 215 UsageError(" method for compiler filter tuning."); 216 UsageError(" Example: --tiny-method-max=%d", CompilerOptions::kDefaultTinyMethodThreshold); 217 UsageError(" Default: %d", CompilerOptions::kDefaultTinyMethodThreshold); 218 UsageError(""); 219 UsageError(" --num-dex-methods=<method-count>: threshold size for a small dex file for"); 220 UsageError(" compiler filter tuning. If the input has fewer than this many methods"); 221 UsageError(" and the filter is not interpret-only or verify-none, overrides the"); 222 UsageError(" filter to use speed"); 223 UsageError(" Example: --num-dex-method=%d", CompilerOptions::kDefaultNumDexMethodsThreshold); 224 UsageError(" Default: %d", CompilerOptions::kDefaultNumDexMethodsThreshold); 225 UsageError(""); 226 UsageError(" --dump-timing: display a breakdown of where time was spent"); 227 UsageError(""); 228 UsageError(" --include-patch-information: Include patching information so the generated code"); 229 UsageError(" can have its base address moved without full recompilation."); 230 UsageError(""); 231 UsageError(" --no-include-patch-information: Do not include patching information."); 232 UsageError(""); 233 UsageError(" --include-debug-symbols: Include ELF symbols in this oat file"); 234 UsageError(""); 235 UsageError(" --no-include-debug-symbols: Do not include ELF symbols in this oat file"); 236 UsageError(""); 237 UsageError(" --include-cfi: Include call frame information in the .eh_frame section."); 238 UsageError(" The --include-debug-symbols option implies --include-cfi."); 239 UsageError(""); 240 UsageError(" --no-include-cfi: Do not include call frame information in the .eh_frame section."); 241 UsageError(""); 242 UsageError(" --runtime-arg <argument>: used to specify various arguments for the runtime,"); 243 UsageError(" such as initial heap size, maximum heap size, and verbose output."); 244 UsageError(" Use a separate --runtime-arg switch for each argument."); 245 UsageError(" Example: --runtime-arg -Xms256m"); 246 UsageError(""); 247 UsageError(" --profile-file=<filename>: specify profiler output file to use for compilation."); 248 UsageError(""); 249 UsageError(" --print-pass-names: print a list of pass names"); 250 UsageError(""); 251 UsageError(" --disable-passes=<pass-names>: disable one or more passes separated by comma."); 252 UsageError(" Example: --disable-passes=UseCount,BBOptimizations"); 253 UsageError(""); 254 UsageError(" --print-pass-options: print a list of passes that have configurable options along " 255 "with the setting."); 256 UsageError(" Will print default if no overridden setting exists."); 257 UsageError(""); 258 UsageError(" --pass-options=Pass1Name:Pass1OptionName:Pass1Option#," 259 "Pass2Name:Pass2OptionName:Pass2Option#"); 260 UsageError(" Used to specify a pass specific option. The setting itself must be integer."); 261 UsageError(" Separator used between options is a comma."); 262 UsageError(""); 263 UsageError(" --swap-file=<file-name>: specifies a file to use for swap."); 264 UsageError(" Example: --swap-file=/data/tmp/swap.001"); 265 UsageError(""); 266 UsageError(" --swap-fd=<file-descriptor>: specifies a file to use for swap (by descriptor)."); 267 UsageError(" Example: --swap-fd=10"); 268 UsageError(""); 269 std::cerr << "See log for usage error information\n"; 270 exit(EXIT_FAILURE); 271} 272 273// The primary goal of the watchdog is to prevent stuck build servers 274// during development when fatal aborts lead to a cascade of failures 275// that result in a deadlock. 276class WatchDog { 277// WatchDog defines its own CHECK_PTHREAD_CALL to avoid using LOG which uses locks 278#undef CHECK_PTHREAD_CALL 279#define CHECK_WATCH_DOG_PTHREAD_CALL(call, args, what) \ 280 do { \ 281 int rc = call args; \ 282 if (rc != 0) { \ 283 errno = rc; \ 284 std::string message(# call); \ 285 message += " failed for "; \ 286 message += reason; \ 287 Fatal(message); \ 288 } \ 289 } while (false) 290 291 public: 292 explicit WatchDog(bool is_watch_dog_enabled) { 293 is_watch_dog_enabled_ = is_watch_dog_enabled; 294 if (!is_watch_dog_enabled_) { 295 return; 296 } 297 shutting_down_ = false; 298 const char* reason = "dex2oat watch dog thread startup"; 299 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_init, (&mutex_, nullptr), reason); 300 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_init, (&cond_, nullptr), reason); 301 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_init, (&attr_), reason); 302 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_create, (&pthread_, &attr_, &CallBack, this), reason); 303 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_destroy, (&attr_), reason); 304 } 305 ~WatchDog() { 306 if (!is_watch_dog_enabled_) { 307 return; 308 } 309 const char* reason = "dex2oat watch dog thread shutdown"; 310 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 311 shutting_down_ = true; 312 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_signal, (&cond_), reason); 313 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 314 315 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_join, (pthread_, nullptr), reason); 316 317 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_destroy, (&cond_), reason); 318 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_destroy, (&mutex_), reason); 319 } 320 321 private: 322 static void* CallBack(void* arg) { 323 WatchDog* self = reinterpret_cast<WatchDog*>(arg); 324 ::art::SetThreadName("dex2oat watch dog"); 325 self->Wait(); 326 return nullptr; 327 } 328 329 NO_RETURN static void Fatal(const std::string& message) { 330 // TODO: When we can guarantee it won't prevent shutdown in error cases, move to LOG. However, 331 // it's rather easy to hang in unwinding. 332 // LogLine also avoids ART logging lock issues, as it's really only a wrapper around 333 // logcat logging or stderr output. 334 LogMessage::LogLine(__FILE__, __LINE__, LogSeverity::FATAL, message.c_str()); 335 exit(1); 336 } 337 338 void Wait() { 339 // TODO: tune the multiplier for GC verification, the following is just to make the timeout 340 // large. 341 constexpr int64_t multiplier = kVerifyObjectSupport > kVerifyObjectModeFast ? 100 : 1; 342 timespec timeout_ts; 343 InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogTimeoutSeconds * 1000, 0, &timeout_ts); 344 const char* reason = "dex2oat watch dog thread waiting"; 345 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 346 while (!shutting_down_) { 347 int rc = TEMP_FAILURE_RETRY(pthread_cond_timedwait(&cond_, &mutex_, &timeout_ts)); 348 if (rc == ETIMEDOUT) { 349 Fatal(StringPrintf("dex2oat did not finish after %" PRId64 " seconds", 350 kWatchDogTimeoutSeconds)); 351 } else if (rc != 0) { 352 std::string message(StringPrintf("pthread_cond_timedwait failed: %s", 353 strerror(errno))); 354 Fatal(message.c_str()); 355 } 356 } 357 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 358 } 359 360 // When setting timeouts, keep in mind that the build server may not be as fast as your desktop. 361 // Debug builds are slower so they have larger timeouts. 362 static constexpr int64_t kSlowdownFactor = kIsDebugBuild ? 5U : 1U; 363 364 // 10 minutes scaled by kSlowdownFactor. 365 static constexpr int64_t kWatchDogTimeoutSeconds = kSlowdownFactor * 10 * 60; 366 367 bool is_watch_dog_enabled_; 368 bool shutting_down_; 369 // TODO: Switch to Mutex when we can guarantee it won't prevent shutdown in error cases. 370 pthread_mutex_t mutex_; 371 pthread_cond_t cond_; 372 pthread_attr_t attr_; 373 pthread_t pthread_; 374}; 375 376static void ParseStringAfterChar(const std::string& s, char c, std::string* parsed_value) { 377 std::string::size_type colon = s.find(c); 378 if (colon == std::string::npos) { 379 Usage("Missing char %c in option %s\n", c, s.c_str()); 380 } 381 // Add one to remove the char we were trimming until. 382 *parsed_value = s.substr(colon + 1); 383} 384 385static void ParseDouble(const std::string& option, char after_char, double min, double max, 386 double* parsed_value) { 387 std::string substring; 388 ParseStringAfterChar(option, after_char, &substring); 389 bool sane_val = true; 390 double value; 391 if (false) { 392 // TODO: this doesn't seem to work on the emulator. b/15114595 393 std::stringstream iss(substring); 394 iss >> value; 395 // Ensure that we have a value, there was no cruft after it and it satisfies a sensible range. 396 sane_val = iss.eof() && (value >= min) && (value <= max); 397 } else { 398 char* end = nullptr; 399 value = strtod(substring.c_str(), &end); 400 sane_val = *end == '\0' && value >= min && value <= max; 401 } 402 if (!sane_val) { 403 Usage("Invalid double value %s for option %s\n", substring.c_str(), option.c_str()); 404 } 405 *parsed_value = value; 406} 407 408static constexpr size_t kMinDexFilesForSwap = 2; 409static constexpr size_t kMinDexFileCumulativeSizeForSwap = 20 * MB; 410 411static bool UseSwap(bool is_image, std::vector<const DexFile*>& dex_files) { 412 if (is_image) { 413 // Don't use swap, we know generation should succeed, and we don't want to slow it down. 414 return false; 415 } 416 if (dex_files.size() < kMinDexFilesForSwap) { 417 // If there are less dex files than the threshold, assume it's gonna be fine. 418 return false; 419 } 420 size_t dex_files_size = 0; 421 for (const auto* dex_file : dex_files) { 422 dex_files_size += dex_file->GetHeader().file_size_; 423 } 424 return dex_files_size >= kMinDexFileCumulativeSizeForSwap; 425} 426 427class Dex2Oat FINAL { 428 public: 429 explicit Dex2Oat(TimingLogger* timings) : 430 compiler_kind_(kUseOptimizingCompiler ? Compiler::kOptimizing : Compiler::kQuick), 431 instruction_set_(kRuntimeISA), 432 // Take the default set of instruction features from the build. 433 method_inliner_map_(), 434 runtime_(nullptr), 435 thread_count_(sysconf(_SC_NPROCESSORS_CONF)), 436 start_ns_(NanoTime()), 437 oat_fd_(-1), 438 zip_fd_(-1), 439 image_base_(0U), 440 image_classes_zip_filename_(nullptr), 441 image_classes_filename_(nullptr), 442 compiled_classes_zip_filename_(nullptr), 443 compiled_classes_filename_(nullptr), 444 compiled_methods_zip_filename_(nullptr), 445 compiled_methods_filename_(nullptr), 446 image_(false), 447 is_host_(false), 448 dump_stats_(false), 449 dump_passes_(false), 450 dump_timing_(false), 451 dump_slow_timing_(kIsDebugBuild), 452 swap_fd_(-1), 453 timings_(timings) {} 454 455 ~Dex2Oat() { 456 // Free opened dex files before deleting the runtime_, because ~DexFile 457 // uses MemMap, which is shut down by ~Runtime. 458 class_path_files_.clear(); 459 opened_dex_files_.clear(); 460 461 // Log completion time before deleting the runtime_, because this accesses 462 // the runtime. 463 LogCompletionTime(); 464 465 if (kIsDebugBuild || (RUNNING_ON_VALGRIND != 0)) { 466 delete runtime_; // See field declaration for why this is manual. 467 } 468 } 469 470 // Parse the arguments from the command line. In case of an unrecognized option or impossible 471 // values/combinations, a usage error will be displayed and exit() is called. Thus, if the method 472 // returns, arguments have been successfully parsed. 473 void ParseArgs(int argc, char** argv) { 474 original_argc = argc; 475 original_argv = argv; 476 477 InitLogging(argv); 478 479 // Skip over argv[0]. 480 argv++; 481 argc--; 482 483 if (argc == 0) { 484 Usage("No arguments specified"); 485 } 486 487 std::string oat_symbols; 488 std::string boot_image_filename; 489 const char* compiler_filter_string = nullptr; 490 bool compile_pic = false; 491 int huge_method_threshold = CompilerOptions::kDefaultHugeMethodThreshold; 492 int large_method_threshold = CompilerOptions::kDefaultLargeMethodThreshold; 493 int small_method_threshold = CompilerOptions::kDefaultSmallMethodThreshold; 494 int tiny_method_threshold = CompilerOptions::kDefaultTinyMethodThreshold; 495 int num_dex_methods_threshold = CompilerOptions::kDefaultNumDexMethodsThreshold; 496 497 // Profile file to use 498 double top_k_profile_threshold = CompilerOptions::kDefaultTopKProfileThreshold; 499 500 bool debuggable = false; 501 bool include_patch_information = CompilerOptions::kDefaultIncludePatchInformation; 502 bool include_debug_symbols = kIsDebugBuild; 503 bool include_cfi = kIsDebugBuild; 504 bool watch_dog_enabled = true; 505 bool abort_on_hard_verifier_error = false; 506 bool requested_specific_compiler = false; 507 508 PassManagerOptions pass_manager_options; 509 510 std::string error_msg; 511 512 for (int i = 0; i < argc; i++) { 513 const StringPiece option(argv[i]); 514 const bool log_options = false; 515 if (log_options) { 516 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 517 } 518 if (option.starts_with("--dex-file=")) { 519 dex_filenames_.push_back(option.substr(strlen("--dex-file=")).data()); 520 } else if (option.starts_with("--dex-location=")) { 521 dex_locations_.push_back(option.substr(strlen("--dex-location=")).data()); 522 } else if (option.starts_with("--zip-fd=")) { 523 const char* zip_fd_str = option.substr(strlen("--zip-fd=")).data(); 524 if (!ParseInt(zip_fd_str, &zip_fd_)) { 525 Usage("Failed to parse --zip-fd argument '%s' as an integer", zip_fd_str); 526 } 527 if (zip_fd_ < 0) { 528 Usage("--zip-fd passed a negative value %d", zip_fd_); 529 } 530 } else if (option.starts_with("--zip-location=")) { 531 zip_location_ = option.substr(strlen("--zip-location=")).data(); 532 } else if (option.starts_with("--oat-file=")) { 533 oat_filename_ = option.substr(strlen("--oat-file=")).data(); 534 } else if (option.starts_with("--oat-symbols=")) { 535 oat_symbols = option.substr(strlen("--oat-symbols=")).data(); 536 } else if (option.starts_with("--oat-fd=")) { 537 const char* oat_fd_str = option.substr(strlen("--oat-fd=")).data(); 538 if (!ParseInt(oat_fd_str, &oat_fd_)) { 539 Usage("Failed to parse --oat-fd argument '%s' as an integer", oat_fd_str); 540 } 541 if (oat_fd_ < 0) { 542 Usage("--oat-fd passed a negative value %d", oat_fd_); 543 } 544 } else if (option == "--watch-dog") { 545 watch_dog_enabled = true; 546 } else if (option == "--no-watch-dog") { 547 watch_dog_enabled = false; 548 } else if (option.starts_with("-j")) { 549 const char* thread_count_str = option.substr(strlen("-j")).data(); 550 if (!ParseUint(thread_count_str, &thread_count_)) { 551 Usage("Failed to parse -j argument '%s' as an integer", thread_count_str); 552 } 553 } else if (option.starts_with("--oat-location=")) { 554 oat_location_ = option.substr(strlen("--oat-location=")).data(); 555 } else if (option.starts_with("--image=")) { 556 image_filename_ = option.substr(strlen("--image=")).data(); 557 } else if (option.starts_with("--image-classes=")) { 558 image_classes_filename_ = option.substr(strlen("--image-classes=")).data(); 559 } else if (option.starts_with("--image-classes-zip=")) { 560 image_classes_zip_filename_ = option.substr(strlen("--image-classes-zip=")).data(); 561 } else if (option.starts_with("--compiled-classes=")) { 562 compiled_classes_filename_ = option.substr(strlen("--compiled-classes=")).data(); 563 } else if (option.starts_with("--compiled-classes-zip=")) { 564 compiled_classes_zip_filename_ = option.substr(strlen("--compiled-classes-zip=")).data(); 565 } else if (option.starts_with("--compiled-methods=")) { 566 compiled_methods_filename_ = option.substr(strlen("--compiled-methods=")).data(); 567 } else if (option.starts_with("--compiled-methods-zip=")) { 568 compiled_methods_zip_filename_ = option.substr(strlen("--compiled-methods-zip=")).data(); 569 } else if (option.starts_with("--base=")) { 570 const char* image_base_str = option.substr(strlen("--base=")).data(); 571 char* end; 572 image_base_ = strtoul(image_base_str, &end, 16); 573 if (end == image_base_str || *end != '\0') { 574 Usage("Failed to parse hexadecimal value for option %s", option.data()); 575 } 576 } else if (option.starts_with("--boot-image=")) { 577 boot_image_filename = option.substr(strlen("--boot-image=")).data(); 578 } else if (option.starts_with("--android-root=")) { 579 android_root_ = option.substr(strlen("--android-root=")).data(); 580 } else if (option.starts_with("--instruction-set=")) { 581 StringPiece instruction_set_str = option.substr(strlen("--instruction-set=")).data(); 582 // StringPiece is not necessarily zero-terminated, so need to make a copy and ensure it. 583 std::unique_ptr<char[]> buf(new char[instruction_set_str.length() + 1]); 584 strncpy(buf.get(), instruction_set_str.data(), instruction_set_str.length()); 585 buf.get()[instruction_set_str.length()] = 0; 586 instruction_set_ = GetInstructionSetFromString(buf.get()); 587 // arm actually means thumb2. 588 if (instruction_set_ == InstructionSet::kArm) { 589 instruction_set_ = InstructionSet::kThumb2; 590 } 591 } else if (option.starts_with("--instruction-set-variant=")) { 592 StringPiece str = option.substr(strlen("--instruction-set-variant=")).data(); 593 instruction_set_features_.reset( 594 InstructionSetFeatures::FromVariant(instruction_set_, str.as_string(), &error_msg)); 595 if (instruction_set_features_.get() == nullptr) { 596 Usage("%s", error_msg.c_str()); 597 } 598 } else if (option.starts_with("--instruction-set-features=")) { 599 StringPiece str = option.substr(strlen("--instruction-set-features=")).data(); 600 if (instruction_set_features_.get() == nullptr) { 601 instruction_set_features_.reset( 602 InstructionSetFeatures::FromVariant(instruction_set_, "default", &error_msg)); 603 if (instruction_set_features_.get() == nullptr) { 604 Usage("Problem initializing default instruction set features variant: %s", 605 error_msg.c_str()); 606 } 607 } 608 instruction_set_features_.reset( 609 instruction_set_features_->AddFeaturesFromString(str.as_string(), &error_msg)); 610 if (instruction_set_features_.get() == nullptr) { 611 Usage("Error parsing '%s': %s", option.data(), error_msg.c_str()); 612 } 613 } else if (option.starts_with("--compiler-backend=")) { 614 requested_specific_compiler = true; 615 StringPiece backend_str = option.substr(strlen("--compiler-backend=")).data(); 616 if (backend_str == "Quick") { 617 compiler_kind_ = Compiler::kQuick; 618 } else if (backend_str == "Optimizing") { 619 compiler_kind_ = Compiler::kOptimizing; 620 } else { 621 Usage("Unknown compiler backend: %s", backend_str.data()); 622 } 623 } else if (option.starts_with("--compiler-filter=")) { 624 compiler_filter_string = option.substr(strlen("--compiler-filter=")).data(); 625 } else if (option == "--compile-pic") { 626 compile_pic = true; 627 } else if (option.starts_with("--huge-method-max=")) { 628 const char* threshold = option.substr(strlen("--huge-method-max=")).data(); 629 if (!ParseInt(threshold, &huge_method_threshold)) { 630 Usage("Failed to parse --huge-method-max '%s' as an integer", threshold); 631 } 632 if (huge_method_threshold < 0) { 633 Usage("--huge-method-max passed a negative value %s", huge_method_threshold); 634 } 635 } else if (option.starts_with("--large-method-max=")) { 636 const char* threshold = option.substr(strlen("--large-method-max=")).data(); 637 if (!ParseInt(threshold, &large_method_threshold)) { 638 Usage("Failed to parse --large-method-max '%s' as an integer", threshold); 639 } 640 if (large_method_threshold < 0) { 641 Usage("--large-method-max passed a negative value %s", large_method_threshold); 642 } 643 } else if (option.starts_with("--small-method-max=")) { 644 const char* threshold = option.substr(strlen("--small-method-max=")).data(); 645 if (!ParseInt(threshold, &small_method_threshold)) { 646 Usage("Failed to parse --small-method-max '%s' as an integer", threshold); 647 } 648 if (small_method_threshold < 0) { 649 Usage("--small-method-max passed a negative value %s", small_method_threshold); 650 } 651 } else if (option.starts_with("--tiny-method-max=")) { 652 const char* threshold = option.substr(strlen("--tiny-method-max=")).data(); 653 if (!ParseInt(threshold, &tiny_method_threshold)) { 654 Usage("Failed to parse --tiny-method-max '%s' as an integer", threshold); 655 } 656 if (tiny_method_threshold < 0) { 657 Usage("--tiny-method-max passed a negative value %s", tiny_method_threshold); 658 } 659 } else if (option.starts_with("--num-dex-methods=")) { 660 const char* threshold = option.substr(strlen("--num-dex-methods=")).data(); 661 if (!ParseInt(threshold, &num_dex_methods_threshold)) { 662 Usage("Failed to parse --num-dex-methods '%s' as an integer", threshold); 663 } 664 if (num_dex_methods_threshold < 0) { 665 Usage("--num-dex-methods passed a negative value %s", num_dex_methods_threshold); 666 } 667 } else if (option == "--host") { 668 is_host_ = true; 669 } else if (option == "--runtime-arg") { 670 if (++i >= argc) { 671 Usage("Missing required argument for --runtime-arg"); 672 } 673 if (log_options) { 674 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 675 } 676 runtime_args_.push_back(argv[i]); 677 } else if (option == "--dump-timing") { 678 dump_timing_ = true; 679 } else if (option == "--dump-passes") { 680 dump_passes_ = true; 681 } else if (option.starts_with("--dump-cfg=")) { 682 dump_cfg_file_name_ = option.substr(strlen("--dump-cfg=")).data(); 683 } else if (option == "--dump-stats") { 684 dump_stats_ = true; 685 } else if (option == "--include-debug-symbols" || option == "--no-strip-symbols") { 686 include_debug_symbols = true; 687 } else if (option == "--no-include-debug-symbols" || option == "--strip-symbols") { 688 include_debug_symbols = false; 689 } else if (option == "--include-cfi") { 690 include_cfi = true; 691 } else if (option == "--no-include-cfi") { 692 include_cfi = false; 693 } else if (option == "--debuggable") { 694 debuggable = true; 695 include_debug_symbols = true; 696 include_cfi = true; 697 } else if (option.starts_with("--profile-file=")) { 698 profile_file_ = option.substr(strlen("--profile-file=")).data(); 699 VLOG(compiler) << "dex2oat: profile file is " << profile_file_; 700 } else if (option == "--no-profile-file") { 701 // No profile 702 } else if (option.starts_with("--top-k-profile-threshold=")) { 703 ParseDouble(option.data(), '=', 0.0, 100.0, &top_k_profile_threshold); 704 } else if (option == "--print-pass-names") { 705 pass_manager_options.SetPrintPassNames(true); 706 } else if (option.starts_with("--disable-passes=")) { 707 const std::string disable_passes = option.substr(strlen("--disable-passes=")).data(); 708 pass_manager_options.SetDisablePassList(disable_passes); 709 } else if (option.starts_with("--print-passes=")) { 710 const std::string print_passes = option.substr(strlen("--print-passes=")).data(); 711 pass_manager_options.SetPrintPassList(print_passes); 712 } else if (option == "--print-all-passes") { 713 pass_manager_options.SetPrintAllPasses(); 714 } else if (option.starts_with("--dump-cfg-passes=")) { 715 const std::string dump_passes_string = option.substr(strlen("--dump-cfg-passes=")).data(); 716 pass_manager_options.SetDumpPassList(dump_passes_string); 717 } else if (option == "--print-pass-options") { 718 pass_manager_options.SetPrintPassOptions(true); 719 } else if (option.starts_with("--pass-options=")) { 720 const std::string options = option.substr(strlen("--pass-options=")).data(); 721 pass_manager_options.SetOverriddenPassOptions(options); 722 } else if (option == "--include-patch-information") { 723 include_patch_information = true; 724 } else if (option == "--no-include-patch-information") { 725 include_patch_information = false; 726 } else if (option.starts_with("--verbose-methods=")) { 727 // TODO: rather than switch off compiler logging, make all VLOG(compiler) messages 728 // conditional on having verbost methods. 729 gLogVerbosity.compiler = false; 730 Split(option.substr(strlen("--verbose-methods=")).ToString(), ',', &verbose_methods_); 731 } else if (option.starts_with("--dump-init-failures=")) { 732 std::string file_name = option.substr(strlen("--dump-init-failures=")).data(); 733 init_failure_output_.reset(new std::ofstream(file_name)); 734 if (init_failure_output_.get() == nullptr) { 735 LOG(ERROR) << "Failed to allocate ofstream"; 736 } else if (init_failure_output_->fail()) { 737 LOG(ERROR) << "Failed to open " << file_name << " for writing the initialization " 738 << "failures."; 739 init_failure_output_.reset(); 740 } 741 } else if (option.starts_with("--swap-file=")) { 742 swap_file_name_ = option.substr(strlen("--swap-file=")).data(); 743 } else if (option.starts_with("--swap-fd=")) { 744 const char* swap_fd_str = option.substr(strlen("--swap-fd=")).data(); 745 if (!ParseInt(swap_fd_str, &swap_fd_)) { 746 Usage("Failed to parse --swap-fd argument '%s' as an integer", swap_fd_str); 747 } 748 if (swap_fd_ < 0) { 749 Usage("--swap-fd passed a negative value %d", swap_fd_); 750 } 751 } else if (option == "--abort-on-hard-verifier-error") { 752 abort_on_hard_verifier_error = true; 753 } else { 754 Usage("Unknown argument %s", option.data()); 755 } 756 } 757 758 image_ = (!image_filename_.empty()); 759 if (!requested_specific_compiler && !kUseOptimizingCompiler) { 760 // If no specific compiler is requested, the current behavior is 761 // to compile the boot image with Quick, and the rest with Optimizing. 762 compiler_kind_ = image_ ? Compiler::kQuick : Compiler::kOptimizing; 763 } 764 765 if (compiler_kind_ == Compiler::kOptimizing) { 766 // Optimizing only supports PIC mode. 767 compile_pic = true; 768 } 769 770 if (oat_filename_.empty() && oat_fd_ == -1) { 771 Usage("Output must be supplied with either --oat-file or --oat-fd"); 772 } 773 774 if (!oat_filename_.empty() && oat_fd_ != -1) { 775 Usage("--oat-file should not be used with --oat-fd"); 776 } 777 778 if (!oat_symbols.empty() && oat_fd_ != -1) { 779 Usage("--oat-symbols should not be used with --oat-fd"); 780 } 781 782 if (!oat_symbols.empty() && is_host_) { 783 Usage("--oat-symbols should not be used with --host"); 784 } 785 786 if (oat_fd_ != -1 && !image_filename_.empty()) { 787 Usage("--oat-fd should not be used with --image"); 788 } 789 790 if (android_root_.empty()) { 791 const char* android_root_env_var = getenv("ANDROID_ROOT"); 792 if (android_root_env_var == nullptr) { 793 Usage("--android-root unspecified and ANDROID_ROOT not set"); 794 } 795 android_root_ += android_root_env_var; 796 } 797 798 if (!image_ && boot_image_filename.empty()) { 799 boot_image_filename += android_root_; 800 boot_image_filename += "/framework/boot.art"; 801 } 802 if (!boot_image_filename.empty()) { 803 boot_image_option_ += "-Ximage:"; 804 boot_image_option_ += boot_image_filename; 805 } 806 807 if (image_classes_filename_ != nullptr && !image_) { 808 Usage("--image-classes should only be used with --image"); 809 } 810 811 if (image_classes_filename_ != nullptr && !boot_image_option_.empty()) { 812 Usage("--image-classes should not be used with --boot-image"); 813 } 814 815 if (image_classes_zip_filename_ != nullptr && image_classes_filename_ == nullptr) { 816 Usage("--image-classes-zip should be used with --image-classes"); 817 } 818 819 if (compiled_classes_filename_ != nullptr && !image_) { 820 Usage("--compiled-classes should only be used with --image"); 821 } 822 823 if (compiled_classes_filename_ != nullptr && !boot_image_option_.empty()) { 824 Usage("--compiled-classes should not be used with --boot-image"); 825 } 826 827 if (compiled_classes_zip_filename_ != nullptr && compiled_classes_filename_ == nullptr) { 828 Usage("--compiled-classes-zip should be used with --compiled-classes"); 829 } 830 831 if (dex_filenames_.empty() && zip_fd_ == -1) { 832 Usage("Input must be supplied with either --dex-file or --zip-fd"); 833 } 834 835 if (!dex_filenames_.empty() && zip_fd_ != -1) { 836 Usage("--dex-file should not be used with --zip-fd"); 837 } 838 839 if (!dex_filenames_.empty() && !zip_location_.empty()) { 840 Usage("--dex-file should not be used with --zip-location"); 841 } 842 843 if (dex_locations_.empty()) { 844 for (const char* dex_file_name : dex_filenames_) { 845 dex_locations_.push_back(dex_file_name); 846 } 847 } else if (dex_locations_.size() != dex_filenames_.size()) { 848 Usage("--dex-location arguments do not match --dex-file arguments"); 849 } 850 851 if (zip_fd_ != -1 && zip_location_.empty()) { 852 Usage("--zip-location should be supplied with --zip-fd"); 853 } 854 855 if (boot_image_option_.empty()) { 856 if (image_base_ == 0) { 857 Usage("Non-zero --base not specified"); 858 } 859 } 860 861 oat_stripped_ = oat_filename_; 862 if (!oat_symbols.empty()) { 863 oat_unstripped_ = oat_symbols; 864 } else { 865 oat_unstripped_ = oat_filename_; 866 } 867 868 // If no instruction set feature was given, use the default one for the target 869 // instruction set. 870 if (instruction_set_features_.get() == nullptr) { 871 instruction_set_features_.reset( 872 InstructionSetFeatures::FromVariant(instruction_set_, "default", &error_msg)); 873 if (instruction_set_features_.get() == nullptr) { 874 Usage("Problem initializing default instruction set features variant: %s", 875 error_msg.c_str()); 876 } 877 } 878 879 if (instruction_set_ == kRuntimeISA) { 880 std::unique_ptr<const InstructionSetFeatures> runtime_features( 881 InstructionSetFeatures::FromCppDefines()); 882 if (!instruction_set_features_->Equals(runtime_features.get())) { 883 LOG(WARNING) << "Mismatch between dex2oat instruction set features (" 884 << *instruction_set_features_ << ") and those of dex2oat executable (" 885 << *runtime_features <<") for the command line:\n" 886 << CommandLine(); 887 } 888 } 889 890 if (compiler_filter_string == nullptr) { 891 compiler_filter_string = "speed"; 892 } 893 894 CHECK(compiler_filter_string != nullptr); 895 CompilerOptions::CompilerFilter compiler_filter = CompilerOptions::kDefaultCompilerFilter; 896 if (strcmp(compiler_filter_string, "verify-none") == 0) { 897 compiler_filter = CompilerOptions::kVerifyNone; 898 } else if (strcmp(compiler_filter_string, "interpret-only") == 0) { 899 compiler_filter = CompilerOptions::kInterpretOnly; 900 } else if (strcmp(compiler_filter_string, "verify-at-runtime") == 0) { 901 compiler_filter = CompilerOptions::kVerifyAtRuntime; 902 } else if (strcmp(compiler_filter_string, "space") == 0) { 903 compiler_filter = CompilerOptions::kSpace; 904 } else if (strcmp(compiler_filter_string, "balanced") == 0) { 905 compiler_filter = CompilerOptions::kBalanced; 906 } else if (strcmp(compiler_filter_string, "speed") == 0) { 907 compiler_filter = CompilerOptions::kSpeed; 908 } else if (strcmp(compiler_filter_string, "everything") == 0) { 909 compiler_filter = CompilerOptions::kEverything; 910 } else if (strcmp(compiler_filter_string, "time") == 0) { 911 compiler_filter = CompilerOptions::kTime; 912 } else { 913 Usage("Unknown --compiler-filter value %s", compiler_filter_string); 914 } 915 916 // Checks are all explicit until we know the architecture. 917 bool implicit_null_checks = false; 918 bool implicit_so_checks = false; 919 bool implicit_suspend_checks = false; 920 // Set the compilation target's implicit checks options. 921 switch (instruction_set_) { 922 case kArm: 923 case kThumb2: 924 case kArm64: 925 case kX86: 926 case kX86_64: 927 implicit_null_checks = true; 928 implicit_so_checks = true; 929 break; 930 931 default: 932 // Defaults are correct. 933 break; 934 } 935 936 if (debuggable) { 937 // TODO: Consider adding CFI info and symbols here. 938 } 939 940 compiler_options_.reset(new CompilerOptions(compiler_filter, 941 huge_method_threshold, 942 large_method_threshold, 943 small_method_threshold, 944 tiny_method_threshold, 945 num_dex_methods_threshold, 946 include_patch_information, 947 top_k_profile_threshold, 948 debuggable, 949 include_debug_symbols, 950 include_cfi, 951 implicit_null_checks, 952 implicit_so_checks, 953 implicit_suspend_checks, 954 compile_pic, 955 verbose_methods_.empty() ? 956 nullptr : 957 &verbose_methods_, 958 new PassManagerOptions(pass_manager_options), 959 init_failure_output_.get(), 960 abort_on_hard_verifier_error)); 961 962 // Done with usage checks, enable watchdog if requested 963 if (watch_dog_enabled) { 964 watchdog_.reset(new WatchDog(true)); 965 } 966 967 // Fill some values into the key-value store for the oat header. 968 key_value_store_.reset(new SafeMap<std::string, std::string>()); 969 970 // Insert some compiler things. 971 { 972 std::ostringstream oss; 973 for (int i = 0; i < argc; ++i) { 974 if (i > 0) { 975 oss << ' '; 976 } 977 oss << argv[i]; 978 } 979 key_value_store_->Put(OatHeader::kDex2OatCmdLineKey, oss.str()); 980 oss.str(""); // Reset. 981 oss << kRuntimeISA; 982 key_value_store_->Put(OatHeader::kDex2OatHostKey, oss.str()); 983 key_value_store_->Put(OatHeader::kPicKey, 984 compile_pic ? OatHeader::kTrueValue : OatHeader::kFalseValue); 985 key_value_store_->Put(OatHeader::kDebuggableKey, 986 debuggable ? OatHeader::kTrueValue : OatHeader::kFalseValue); 987 } 988 } 989 990 // Check whether the oat output file is writable, and open it for later. Also open a swap file, 991 // if a name is given. 992 bool OpenFile() { 993 bool create_file = !oat_unstripped_.empty(); // as opposed to using open file descriptor 994 if (create_file) { 995 oat_file_.reset(OS::CreateEmptyFile(oat_unstripped_.c_str())); 996 if (oat_location_.empty()) { 997 oat_location_ = oat_filename_; 998 } 999 } else { 1000 oat_file_.reset(new File(oat_fd_, oat_location_, true)); 1001 oat_file_->DisableAutoClose(); 1002 if (oat_file_->SetLength(0) != 0) { 1003 PLOG(WARNING) << "Truncating oat file " << oat_location_ << " failed."; 1004 } 1005 } 1006 if (oat_file_.get() == nullptr) { 1007 PLOG(ERROR) << "Failed to create oat file: " << oat_location_; 1008 return false; 1009 } 1010 if (create_file && fchmod(oat_file_->Fd(), 0644) != 0) { 1011 PLOG(ERROR) << "Failed to make oat file world readable: " << oat_location_; 1012 oat_file_->Erase(); 1013 return false; 1014 } 1015 1016 // Swap file handling. 1017 // 1018 // If the swap fd is not -1, we assume this is the file descriptor of an open but unlinked file 1019 // that we can use for swap. 1020 // 1021 // If the swap fd is -1 and we have a swap-file string, open the given file as a swap file. We 1022 // will immediately unlink to satisfy the swap fd assumption. 1023 if (swap_fd_ == -1 && !swap_file_name_.empty()) { 1024 std::unique_ptr<File> swap_file(OS::CreateEmptyFile(swap_file_name_.c_str())); 1025 if (swap_file.get() == nullptr) { 1026 PLOG(ERROR) << "Failed to create swap file: " << swap_file_name_; 1027 return false; 1028 } 1029 swap_fd_ = swap_file->Fd(); 1030 swap_file->MarkUnchecked(); // We don't we to track this, it will be unlinked immediately. 1031 swap_file->DisableAutoClose(); // We'll handle it ourselves, the File object will be 1032 // released immediately. 1033 unlink(swap_file_name_.c_str()); 1034 } 1035 1036 return true; 1037 } 1038 1039 void EraseOatFile() { 1040 DCHECK(oat_file_.get() != nullptr); 1041 oat_file_->Erase(); 1042 oat_file_.reset(); 1043 } 1044 1045 // Set up the environment for compilation. Includes starting the runtime and loading/opening the 1046 // boot class path. 1047 bool Setup() { 1048 TimingLogger::ScopedTiming t("dex2oat Setup", timings_); 1049 RuntimeOptions runtime_options; 1050 art::MemMap::Init(); // For ZipEntry::ExtractToMemMap. 1051 if (boot_image_option_.empty()) { 1052 std::string boot_class_path = "-Xbootclasspath:"; 1053 boot_class_path += Join(dex_filenames_, ':'); 1054 runtime_options.push_back(std::make_pair(boot_class_path, nullptr)); 1055 std::string boot_class_path_locations = "-Xbootclasspath-locations:"; 1056 boot_class_path_locations += Join(dex_locations_, ':'); 1057 runtime_options.push_back(std::make_pair(boot_class_path_locations, nullptr)); 1058 } else { 1059 runtime_options.push_back(std::make_pair(boot_image_option_, nullptr)); 1060 } 1061 for (size_t i = 0; i < runtime_args_.size(); i++) { 1062 runtime_options.push_back(std::make_pair(runtime_args_[i], nullptr)); 1063 } 1064 1065 verification_results_.reset(new VerificationResults(compiler_options_.get())); 1066 callbacks_.reset(new QuickCompilerCallbacks( 1067 verification_results_.get(), 1068 &method_inliner_map_, 1069 image_ ? 1070 CompilerCallbacks::CallbackMode::kCompileBootImage : 1071 CompilerCallbacks::CallbackMode::kCompileApp)); 1072 runtime_options.push_back(std::make_pair("compilercallbacks", callbacks_.get())); 1073 runtime_options.push_back( 1074 std::make_pair("imageinstructionset", GetInstructionSetString(instruction_set_))); 1075 1076 // Only allow no boot image for the runtime if we're compiling one. When we compile an app, 1077 // we don't want fallback mode, it will abort as we do not push a boot classpath (it might 1078 // have been stripped in preopting, anyways). 1079 if (!image_) { 1080 runtime_options.push_back(std::make_pair("-Xno-dex-file-fallback", nullptr)); 1081 } 1082 1083 if (!CreateRuntime(runtime_options)) { 1084 return false; 1085 } 1086 1087 // Runtime::Create acquired the mutator_lock_ that is normally given away when we 1088 // Runtime::Start, give it away now so that we don't starve GC. 1089 Thread* self = Thread::Current(); 1090 self->TransitionFromRunnableToSuspended(kNative); 1091 // If we're doing the image, override the compiler filter to force full compilation. Must be 1092 // done ahead of WellKnownClasses::Init that causes verification. Note: doesn't force 1093 // compilation of class initializers. 1094 // Whilst we're in native take the opportunity to initialize well known classes. 1095 WellKnownClasses::Init(self->GetJniEnv()); 1096 1097 // If --image-classes was specified, calculate the full list of classes to include in the image 1098 if (image_classes_filename_ != nullptr) { 1099 std::string error_msg; 1100 if (image_classes_zip_filename_ != nullptr) { 1101 image_classes_.reset(ReadImageClassesFromZip(image_classes_zip_filename_, 1102 image_classes_filename_, 1103 &error_msg)); 1104 } else { 1105 image_classes_.reset(ReadImageClassesFromFile(image_classes_filename_)); 1106 } 1107 if (image_classes_.get() == nullptr) { 1108 LOG(ERROR) << "Failed to create list of image classes from '" << image_classes_filename_ << 1109 "': " << error_msg; 1110 return false; 1111 } 1112 } else if (image_) { 1113 image_classes_.reset(new std::unordered_set<std::string>); 1114 } 1115 // If --compiled-classes was specified, calculate the full list of classes to compile in the 1116 // image. 1117 if (compiled_classes_filename_ != nullptr) { 1118 std::string error_msg; 1119 if (compiled_classes_zip_filename_ != nullptr) { 1120 compiled_classes_.reset(ReadImageClassesFromZip(compiled_classes_zip_filename_, 1121 compiled_classes_filename_, 1122 &error_msg)); 1123 } else { 1124 compiled_classes_.reset(ReadImageClassesFromFile(compiled_classes_filename_)); 1125 } 1126 if (compiled_classes_.get() == nullptr) { 1127 LOG(ERROR) << "Failed to create list of compiled classes from '" 1128 << compiled_classes_filename_ << "': " << error_msg; 1129 return false; 1130 } 1131 } else { 1132 compiled_classes_.reset(nullptr); // By default compile everything. 1133 } 1134 // If --compiled-methods was specified, read the methods to compile from the given file(s). 1135 if (compiled_methods_filename_ != nullptr) { 1136 std::string error_msg; 1137 if (compiled_methods_zip_filename_ != nullptr) { 1138 compiled_methods_.reset(ReadCommentedInputFromZip(compiled_methods_zip_filename_, 1139 compiled_methods_filename_, 1140 nullptr, // No post-processing. 1141 &error_msg)); 1142 } else { 1143 compiled_methods_.reset(ReadCommentedInputFromFile(compiled_methods_filename_, 1144 nullptr)); // No post-processing. 1145 } 1146 if (compiled_methods_.get() == nullptr) { 1147 LOG(ERROR) << "Failed to create list of compiled methods from '" 1148 << compiled_methods_filename_ << "': " << error_msg; 1149 return false; 1150 } 1151 } else { 1152 compiled_methods_.reset(nullptr); // By default compile everything. 1153 } 1154 1155 if (boot_image_option_.empty()) { 1156 dex_files_ = Runtime::Current()->GetClassLinker()->GetBootClassPath(); 1157 } else { 1158 if (dex_filenames_.empty()) { 1159 ATRACE_BEGIN("Opening zip archive from file descriptor"); 1160 std::string error_msg; 1161 std::unique_ptr<ZipArchive> zip_archive(ZipArchive::OpenFromFd(zip_fd_, 1162 zip_location_.c_str(), 1163 &error_msg)); 1164 if (zip_archive.get() == nullptr) { 1165 LOG(ERROR) << "Failed to open zip from file descriptor for '" << zip_location_ << "': " 1166 << error_msg; 1167 return false; 1168 } 1169 if (!DexFile::OpenFromZip(*zip_archive.get(), zip_location_, &error_msg, &opened_dex_files_)) { 1170 LOG(ERROR) << "Failed to open dex from file descriptor for zip file '" << zip_location_ 1171 << "': " << error_msg; 1172 return false; 1173 } 1174 for (auto& dex_file : opened_dex_files_) { 1175 dex_files_.push_back(dex_file.get()); 1176 } 1177 ATRACE_END(); 1178 } else { 1179 size_t failure_count = OpenDexFiles(dex_filenames_, dex_locations_, &opened_dex_files_); 1180 if (failure_count > 0) { 1181 LOG(ERROR) << "Failed to open some dex files: " << failure_count; 1182 return false; 1183 } 1184 for (auto& dex_file : opened_dex_files_) { 1185 dex_files_.push_back(dex_file.get()); 1186 } 1187 } 1188 1189 constexpr bool kSaveDexInput = false; 1190 if (kSaveDexInput) { 1191 for (size_t i = 0; i < dex_files_.size(); ++i) { 1192 const DexFile* dex_file = dex_files_[i]; 1193 std::string tmp_file_name(StringPrintf("/data/local/tmp/dex2oat.%d.%zd.dex", 1194 getpid(), i)); 1195 std::unique_ptr<File> tmp_file(OS::CreateEmptyFile(tmp_file_name.c_str())); 1196 if (tmp_file.get() == nullptr) { 1197 PLOG(ERROR) << "Failed to open file " << tmp_file_name 1198 << ". Try: adb shell chmod 777 /data/local/tmp"; 1199 continue; 1200 } 1201 // This is just dumping files for debugging. Ignore errors, and leave remnants. 1202 UNUSED(tmp_file->WriteFully(dex_file->Begin(), dex_file->Size())); 1203 UNUSED(tmp_file->Flush()); 1204 UNUSED(tmp_file->Close()); 1205 LOG(INFO) << "Wrote input to " << tmp_file_name; 1206 } 1207 } 1208 } 1209 // Ensure opened dex files are writable for dex-to-dex transformations. 1210 for (const auto& dex_file : dex_files_) { 1211 if (!dex_file->EnableWrite()) { 1212 PLOG(ERROR) << "Failed to make .dex file writeable '" << dex_file->GetLocation() << "'\n"; 1213 } 1214 } 1215 1216 // If we use a swap file, ensure we are above the threshold to make it necessary. 1217 if (swap_fd_ != -1) { 1218 if (!UseSwap(image_, dex_files_)) { 1219 close(swap_fd_); 1220 swap_fd_ = -1; 1221 VLOG(compiler) << "Decided to run without swap."; 1222 } else { 1223 LOG(INFO) << "Large app, accepted running with swap."; 1224 } 1225 } 1226 // Note that dex2oat won't close the swap_fd_. The compiler driver's swap space will do that. 1227 1228 /* 1229 * If we're not in interpret-only or verify-none mode, go ahead and compile small applications. 1230 * Don't bother to check if we're doing the image. 1231 */ 1232 if (!image_ && 1233 compiler_options_->IsCompilationEnabled() && 1234 compiler_kind_ == Compiler::kQuick) { 1235 size_t num_methods = 0; 1236 for (size_t i = 0; i != dex_files_.size(); ++i) { 1237 const DexFile* dex_file = dex_files_[i]; 1238 CHECK(dex_file != nullptr); 1239 num_methods += dex_file->NumMethodIds(); 1240 } 1241 if (num_methods <= compiler_options_->GetNumDexMethodsThreshold()) { 1242 compiler_options_->SetCompilerFilter(CompilerOptions::kSpeed); 1243 VLOG(compiler) << "Below method threshold, compiling anyways"; 1244 } 1245 } 1246 1247 return true; 1248 } 1249 1250 // Create and invoke the compiler driver. This will compile all the dex files. 1251 void Compile() { 1252 TimingLogger::ScopedTiming t("dex2oat Compile", timings_); 1253 compiler_phases_timings_.reset(new CumulativeLogger("compilation times")); 1254 1255 // Handle and ClassLoader creation needs to come after Runtime::Create 1256 jobject class_loader = nullptr; 1257 Thread* self = Thread::Current(); 1258 if (!boot_image_option_.empty()) { 1259 ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 1260 OpenClassPathFiles(runtime_->GetClassPathString(), dex_files_, &class_path_files_); 1261 ScopedObjectAccess soa(self); 1262 1263 // Classpath: first the class-path given. 1264 std::vector<const DexFile*> class_path_files; 1265 for (auto& class_path_file : class_path_files_) { 1266 class_path_files.push_back(class_path_file.get()); 1267 } 1268 1269 // Store the classpath we have right now. 1270 key_value_store_->Put(OatHeader::kClassPathKey, 1271 OatFile::EncodeDexFileDependencies(class_path_files)); 1272 1273 // Then the dex files we'll compile. Thus we'll resolve the class-path first. 1274 class_path_files.insert(class_path_files.end(), dex_files_.begin(), dex_files_.end()); 1275 1276 class_loader = class_linker->CreatePathClassLoader(self, class_path_files); 1277 } 1278 1279 driver_.reset(new CompilerDriver(compiler_options_.get(), 1280 verification_results_.get(), 1281 &method_inliner_map_, 1282 compiler_kind_, 1283 instruction_set_, 1284 instruction_set_features_.get(), 1285 image_, 1286 image_classes_.release(), 1287 compiled_classes_.release(), 1288 nullptr, 1289 thread_count_, 1290 dump_stats_, 1291 dump_passes_, 1292 dump_cfg_file_name_, 1293 compiler_phases_timings_.get(), 1294 swap_fd_, 1295 profile_file_)); 1296 1297 driver_->CompileAll(class_loader, dex_files_, timings_); 1298 } 1299 1300 // Notes on the interleaving of creating the image and oat file to 1301 // ensure the references between the two are correct. 1302 // 1303 // Currently we have a memory layout that looks something like this: 1304 // 1305 // +--------------+ 1306 // | image | 1307 // +--------------+ 1308 // | boot oat | 1309 // +--------------+ 1310 // | alloc spaces | 1311 // +--------------+ 1312 // 1313 // There are several constraints on the loading of the image and boot.oat. 1314 // 1315 // 1. The image is expected to be loaded at an absolute address and 1316 // contains Objects with absolute pointers within the image. 1317 // 1318 // 2. There are absolute pointers from Methods in the image to their 1319 // code in the oat. 1320 // 1321 // 3. There are absolute pointers from the code in the oat to Methods 1322 // in the image. 1323 // 1324 // 4. There are absolute pointers from code in the oat to other code 1325 // in the oat. 1326 // 1327 // To get this all correct, we go through several steps. 1328 // 1329 // 1. We prepare offsets for all data in the oat file and calculate 1330 // the oat data size and code size. During this stage, we also set 1331 // oat code offsets in methods for use by the image writer. 1332 // 1333 // 2. We prepare offsets for the objects in the image and calculate 1334 // the image size. 1335 // 1336 // 3. We create the oat file. Originally this was just our own proprietary 1337 // file but now it is contained within an ELF dynamic object (aka an .so 1338 // file). Since we know the image size and oat data size and code size we 1339 // can prepare the ELF headers and we then know the ELF memory segment 1340 // layout and we can now resolve all references. The compiler provides 1341 // LinkerPatch information in each CompiledMethod and we resolve these, 1342 // using the layout information and image object locations provided by 1343 // image writer, as we're writing the method code. 1344 // 1345 // 4. We create the image file. It needs to know where the oat file 1346 // will be loaded after itself. Originally when oat file was simply 1347 // memory mapped so we could predict where its contents were based 1348 // on the file size. Now that it is an ELF file, we need to inspect 1349 // the ELF file to understand the in memory segment layout including 1350 // where the oat header is located within. 1351 // TODO: We could just remember this information from step 3. 1352 // 1353 // 5. We fixup the ELF program headers so that dlopen will try to 1354 // load the .so at the desired location at runtime by offsetting the 1355 // Elf32_Phdr.p_vaddr values by the desired base address. 1356 // TODO: Do this in step 3. We already know the layout there. 1357 // 1358 // Steps 1.-3. are done by the CreateOatFile() above, steps 4.-5. 1359 // are done by the CreateImageFile() below. 1360 1361 1362 // Write out the generated code part. Calls the OatWriter and ElfBuilder. Also prepares the 1363 // ImageWriter, if necessary. 1364 // Note: Flushing (and closing) the file is the caller's responsibility, except for the failure 1365 // case (when the file will be explicitly erased). 1366 bool CreateOatFile() { 1367 CHECK(key_value_store_.get() != nullptr); 1368 1369 TimingLogger::ScopedTiming t("dex2oat Oat", timings_); 1370 1371 std::unique_ptr<OatWriter> oat_writer; 1372 { 1373 TimingLogger::ScopedTiming t2("dex2oat OatWriter", timings_); 1374 std::string image_file_location; 1375 uint32_t image_file_location_oat_checksum = 0; 1376 uintptr_t image_file_location_oat_data_begin = 0; 1377 int32_t image_patch_delta = 0; 1378 if (image_) { 1379 PrepareImageWriter(image_base_); 1380 } else { 1381 TimingLogger::ScopedTiming t3("Loading image checksum", timings_); 1382 gc::space::ImageSpace* image_space = Runtime::Current()->GetHeap()->GetImageSpace(); 1383 image_file_location_oat_checksum = image_space->GetImageHeader().GetOatChecksum(); 1384 image_file_location_oat_data_begin = 1385 reinterpret_cast<uintptr_t>(image_space->GetImageHeader().GetOatDataBegin()); 1386 image_file_location = image_space->GetImageFilename(); 1387 image_patch_delta = image_space->GetImageHeader().GetPatchDelta(); 1388 } 1389 1390 if (!image_file_location.empty()) { 1391 key_value_store_->Put(OatHeader::kImageLocationKey, image_file_location); 1392 } 1393 1394 oat_writer.reset(new OatWriter(dex_files_, image_file_location_oat_checksum, 1395 image_file_location_oat_data_begin, 1396 image_patch_delta, 1397 driver_.get(), 1398 image_writer_.get(), 1399 timings_, 1400 key_value_store_.get())); 1401 } 1402 1403 if (image_) { 1404 // The OatWriter constructor has already updated offsets in methods and we need to 1405 // prepare method offsets in the image address space for direct method patching. 1406 TimingLogger::ScopedTiming t2("dex2oat Prepare image address space", timings_); 1407 if (!image_writer_->PrepareImageAddressSpace()) { 1408 LOG(ERROR) << "Failed to prepare image address space."; 1409 return false; 1410 } 1411 } 1412 1413 { 1414 TimingLogger::ScopedTiming t2("dex2oat Write ELF", timings_); 1415 if (!driver_->WriteElf(android_root_, is_host_, dex_files_, oat_writer.get(), 1416 oat_file_.get())) { 1417 LOG(ERROR) << "Failed to write ELF file " << oat_file_->GetPath(); 1418 return false; 1419 } 1420 } 1421 1422 VLOG(compiler) << "Oat file written successfully (unstripped): " << oat_location_; 1423 return true; 1424 } 1425 1426 // If we are compiling an image, invoke the image creation routine. Else just skip. 1427 bool HandleImage() { 1428 if (image_) { 1429 TimingLogger::ScopedTiming t("dex2oat ImageWriter", timings_); 1430 if (!CreateImageFile()) { 1431 return false; 1432 } 1433 VLOG(compiler) << "Image written successfully: " << image_filename_; 1434 } 1435 return true; 1436 } 1437 1438 // Create a copy from unstripped to stripped. 1439 bool CopyUnstrippedToStripped() { 1440 // If we don't want to strip in place, copy from unstripped location to stripped location. 1441 // We need to strip after image creation because FixupElf needs to use .strtab. 1442 if (oat_unstripped_ != oat_stripped_) { 1443 // If the oat file is still open, flush it. 1444 if (oat_file_.get() != nullptr && oat_file_->IsOpened()) { 1445 if (!FlushCloseOatFile()) { 1446 return false; 1447 } 1448 } 1449 1450 TimingLogger::ScopedTiming t("dex2oat OatFile copy", timings_); 1451 std::unique_ptr<File> in(OS::OpenFileForReading(oat_unstripped_.c_str())); 1452 std::unique_ptr<File> out(OS::CreateEmptyFile(oat_stripped_.c_str())); 1453 size_t buffer_size = 8192; 1454 std::unique_ptr<uint8_t[]> buffer(new uint8_t[buffer_size]); 1455 while (true) { 1456 int bytes_read = TEMP_FAILURE_RETRY(read(in->Fd(), buffer.get(), buffer_size)); 1457 if (bytes_read <= 0) { 1458 break; 1459 } 1460 bool write_ok = out->WriteFully(buffer.get(), bytes_read); 1461 CHECK(write_ok); 1462 } 1463 if (out->FlushCloseOrErase() != 0) { 1464 PLOG(ERROR) << "Failed to flush and close copied oat file: " << oat_stripped_; 1465 return false; 1466 } 1467 VLOG(compiler) << "Oat file copied successfully (stripped): " << oat_stripped_; 1468 } 1469 return true; 1470 } 1471 1472 bool FlushOatFile() { 1473 if (oat_file_.get() != nullptr) { 1474 TimingLogger::ScopedTiming t2("dex2oat Flush ELF", timings_); 1475 if (oat_file_->Flush() != 0) { 1476 PLOG(ERROR) << "Failed to flush oat file: " << oat_location_ << " / " 1477 << oat_filename_; 1478 oat_file_->Erase(); 1479 return false; 1480 } 1481 } 1482 return true; 1483 } 1484 1485 bool FlushCloseOatFile() { 1486 if (oat_file_.get() != nullptr) { 1487 std::unique_ptr<File> tmp(oat_file_.release()); 1488 if (tmp->FlushCloseOrErase() != 0) { 1489 PLOG(ERROR) << "Failed to flush and close oat file: " << oat_location_ << " / " 1490 << oat_filename_; 1491 return false; 1492 } 1493 } 1494 return true; 1495 } 1496 1497 void DumpTiming() { 1498 if (dump_timing_ || (dump_slow_timing_ && timings_->GetTotalNs() > MsToNs(1000))) { 1499 LOG(INFO) << Dumpable<TimingLogger>(*timings_); 1500 } 1501 if (dump_passes_) { 1502 LOG(INFO) << Dumpable<CumulativeLogger>(*driver_->GetTimingsLogger()); 1503 } 1504 } 1505 1506 CompilerOptions* GetCompilerOptions() const { 1507 return compiler_options_.get(); 1508 } 1509 1510 bool IsImage() const { 1511 return image_; 1512 } 1513 1514 bool IsHost() const { 1515 return is_host_; 1516 } 1517 1518 private: 1519 static size_t OpenDexFiles(const std::vector<const char*>& dex_filenames, 1520 const std::vector<const char*>& dex_locations, 1521 std::vector<std::unique_ptr<const DexFile>>* dex_files) { 1522 DCHECK(dex_files != nullptr) << "OpenDexFiles out-param is nullptr"; 1523 size_t failure_count = 0; 1524 for (size_t i = 0; i < dex_filenames.size(); i++) { 1525 const char* dex_filename = dex_filenames[i]; 1526 const char* dex_location = dex_locations[i]; 1527 ATRACE_BEGIN(StringPrintf("Opening dex file '%s'", dex_filenames[i]).c_str()); 1528 std::string error_msg; 1529 if (!OS::FileExists(dex_filename)) { 1530 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 1531 continue; 1532 } 1533 if (!DexFile::Open(dex_filename, dex_location, &error_msg, dex_files)) { 1534 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 1535 ++failure_count; 1536 } 1537 ATRACE_END(); 1538 } 1539 return failure_count; 1540 } 1541 1542 // Returns true if dex_files has a dex with the named location. We compare canonical locations, 1543 // so that relative and absolute paths will match. Not caching for the dex_files isn't very 1544 // efficient, but under normal circumstances the list is neither large nor is this part too 1545 // sensitive. 1546 static bool DexFilesContains(const std::vector<const DexFile*>& dex_files, 1547 const std::string& location) { 1548 std::string canonical_location(DexFile::GetDexCanonicalLocation(location.c_str())); 1549 for (size_t i = 0; i < dex_files.size(); ++i) { 1550 if (DexFile::GetDexCanonicalLocation(dex_files[i]->GetLocation().c_str()) == 1551 canonical_location) { 1552 return true; 1553 } 1554 } 1555 return false; 1556 } 1557 1558 // Appends to opened_dex_files any elements of class_path that dex_files 1559 // doesn't already contain. This will open those dex files as necessary. 1560 static void OpenClassPathFiles(const std::string& class_path, 1561 std::vector<const DexFile*> dex_files, 1562 std::vector<std::unique_ptr<const DexFile>>* opened_dex_files) { 1563 DCHECK(opened_dex_files != nullptr) << "OpenClassPathFiles out-param is nullptr"; 1564 std::vector<std::string> parsed; 1565 Split(class_path, ':', &parsed); 1566 // Take Locks::mutator_lock_ so that lock ordering on the ClassLinker::dex_lock_ is maintained. 1567 ScopedObjectAccess soa(Thread::Current()); 1568 for (size_t i = 0; i < parsed.size(); ++i) { 1569 if (DexFilesContains(dex_files, parsed[i])) { 1570 continue; 1571 } 1572 std::string error_msg; 1573 if (!DexFile::Open(parsed[i].c_str(), parsed[i].c_str(), &error_msg, opened_dex_files)) { 1574 LOG(WARNING) << "Failed to open dex file '" << parsed[i] << "': " << error_msg; 1575 } 1576 } 1577 } 1578 1579 // Create a runtime necessary for compilation. 1580 bool CreateRuntime(const RuntimeOptions& runtime_options) 1581 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_) { 1582 if (!Runtime::Create(runtime_options, false)) { 1583 LOG(ERROR) << "Failed to create runtime"; 1584 return false; 1585 } 1586 Runtime* runtime = Runtime::Current(); 1587 runtime->SetInstructionSet(instruction_set_); 1588 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 1589 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 1590 if (!runtime->HasCalleeSaveMethod(type)) { 1591 runtime->SetCalleeSaveMethod(runtime->CreateCalleeSaveMethod(), type); 1592 } 1593 } 1594 runtime->GetClassLinker()->FixupDexCaches(runtime->GetResolutionMethod()); 1595 1596 // Initialize maps for unstarted runtime. This needs to be here, as running clinits needs this 1597 // set up. 1598 interpreter::UnstartedRuntime::Initialize(); 1599 1600 runtime->GetClassLinker()->RunRootClinits(); 1601 runtime_ = runtime; 1602 1603 return true; 1604 } 1605 1606 void PrepareImageWriter(uintptr_t image_base) { 1607 image_writer_.reset(new ImageWriter(*driver_, image_base, compiler_options_->GetCompilePic())); 1608 } 1609 1610 // Let the ImageWriter write the image file. If we do not compile PIC, also fix up the oat file. 1611 bool CreateImageFile() 1612 LOCKS_EXCLUDED(Locks::mutator_lock_) { 1613 CHECK(image_writer_ != nullptr); 1614 if (!image_writer_->Write(image_filename_, oat_unstripped_, oat_location_)) { 1615 LOG(ERROR) << "Failed to create image file " << image_filename_; 1616 return false; 1617 } 1618 uintptr_t oat_data_begin = image_writer_->GetOatDataBegin(); 1619 1620 // Destroy ImageWriter before doing FixupElf. 1621 image_writer_.reset(); 1622 1623 // Do not fix up the ELF file if we are --compile-pic 1624 if (!compiler_options_->GetCompilePic()) { 1625 std::unique_ptr<File> oat_file(OS::OpenFileReadWrite(oat_unstripped_.c_str())); 1626 if (oat_file.get() == nullptr) { 1627 PLOG(ERROR) << "Failed to open ELF file: " << oat_unstripped_; 1628 return false; 1629 } 1630 1631 if (!ElfWriter::Fixup(oat_file.get(), oat_data_begin)) { 1632 oat_file->Erase(); 1633 LOG(ERROR) << "Failed to fixup ELF file " << oat_file->GetPath(); 1634 return false; 1635 } 1636 1637 if (oat_file->FlushCloseOrErase()) { 1638 PLOG(ERROR) << "Failed to flush and close fixed ELF file " << oat_file->GetPath(); 1639 return false; 1640 } 1641 } 1642 1643 return true; 1644 } 1645 1646 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 1647 static std::unordered_set<std::string>* ReadImageClassesFromFile( 1648 const char* image_classes_filename) { 1649 std::function<std::string(const char*)> process = DotToDescriptor; 1650 return ReadCommentedInputFromFile(image_classes_filename, &process); 1651 } 1652 1653 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 1654 static std::unordered_set<std::string>* ReadImageClassesFromZip( 1655 const char* zip_filename, 1656 const char* image_classes_filename, 1657 std::string* error_msg) { 1658 std::function<std::string(const char*)> process = DotToDescriptor; 1659 return ReadCommentedInputFromZip(zip_filename, image_classes_filename, &process, error_msg); 1660 } 1661 1662 // Read lines from the given file, dropping comments and empty lines. Post-process each line with 1663 // the given function. 1664 static std::unordered_set<std::string>* ReadCommentedInputFromFile( 1665 const char* input_filename, std::function<std::string(const char*)>* process) { 1666 std::unique_ptr<std::ifstream> input_file(new std::ifstream(input_filename, std::ifstream::in)); 1667 if (input_file.get() == nullptr) { 1668 LOG(ERROR) << "Failed to open input file " << input_filename; 1669 return nullptr; 1670 } 1671 std::unique_ptr<std::unordered_set<std::string>> result( 1672 ReadCommentedInputStream(*input_file, process)); 1673 input_file->close(); 1674 return result.release(); 1675 } 1676 1677 // Read lines from the given file from the given zip file, dropping comments and empty lines. 1678 // Post-process each line with the given function. 1679 static std::unordered_set<std::string>* ReadCommentedInputFromZip( 1680 const char* zip_filename, 1681 const char* input_filename, 1682 std::function<std::string(const char*)>* process, 1683 std::string* error_msg) { 1684 std::unique_ptr<ZipArchive> zip_archive(ZipArchive::Open(zip_filename, error_msg)); 1685 if (zip_archive.get() == nullptr) { 1686 return nullptr; 1687 } 1688 std::unique_ptr<ZipEntry> zip_entry(zip_archive->Find(input_filename, error_msg)); 1689 if (zip_entry.get() == nullptr) { 1690 *error_msg = StringPrintf("Failed to find '%s' within '%s': %s", input_filename, 1691 zip_filename, error_msg->c_str()); 1692 return nullptr; 1693 } 1694 std::unique_ptr<MemMap> input_file(zip_entry->ExtractToMemMap(zip_filename, 1695 input_filename, 1696 error_msg)); 1697 if (input_file.get() == nullptr) { 1698 *error_msg = StringPrintf("Failed to extract '%s' from '%s': %s", input_filename, 1699 zip_filename, error_msg->c_str()); 1700 return nullptr; 1701 } 1702 const std::string input_string(reinterpret_cast<char*>(input_file->Begin()), 1703 input_file->Size()); 1704 std::istringstream input_stream(input_string); 1705 return ReadCommentedInputStream(input_stream, process); 1706 } 1707 1708 // Read lines from the given stream, dropping comments and empty lines. Post-process each line 1709 // with the given function. 1710 static std::unordered_set<std::string>* ReadCommentedInputStream( 1711 std::istream& in_stream, 1712 std::function<std::string(const char*)>* process) { 1713 std::unique_ptr<std::unordered_set<std::string>> image_classes( 1714 new std::unordered_set<std::string>); 1715 while (in_stream.good()) { 1716 std::string dot; 1717 std::getline(in_stream, dot); 1718 if (StartsWith(dot, "#") || dot.empty()) { 1719 continue; 1720 } 1721 if (process != nullptr) { 1722 std::string descriptor((*process)(dot.c_str())); 1723 image_classes->insert(descriptor); 1724 } else { 1725 image_classes->insert(dot); 1726 } 1727 } 1728 return image_classes.release(); 1729 } 1730 1731 void LogCompletionTime() { 1732 // Note: when creation of a runtime fails, e.g., when trying to compile an app but when there 1733 // is no image, there won't be a Runtime::Current(). 1734 // Note: driver creation can fail when loading an invalid dex file. 1735 LOG(INFO) << "dex2oat took " << PrettyDuration(NanoTime() - start_ns_) 1736 << " (threads: " << thread_count_ << ") " 1737 << ((Runtime::Current() != nullptr && driver_.get() != nullptr) ? 1738 driver_->GetMemoryUsageString(kIsDebugBuild || VLOG_IS_ON(compiler)) : 1739 ""); 1740 } 1741 1742 std::unique_ptr<CompilerOptions> compiler_options_; 1743 Compiler::Kind compiler_kind_; 1744 1745 InstructionSet instruction_set_; 1746 std::unique_ptr<const InstructionSetFeatures> instruction_set_features_; 1747 1748 std::unique_ptr<SafeMap<std::string, std::string> > key_value_store_; 1749 1750 std::unique_ptr<VerificationResults> verification_results_; 1751 DexFileToMethodInlinerMap method_inliner_map_; 1752 std::unique_ptr<QuickCompilerCallbacks> callbacks_; 1753 1754 // Ownership for the class path files. 1755 std::vector<std::unique_ptr<const DexFile>> class_path_files_; 1756 1757 // Not a unique_ptr as we want to just exit on non-debug builds, not bringing the runtime down 1758 // in an orderly fashion. The destructor takes care of deleting this. 1759 Runtime* runtime_; 1760 1761 size_t thread_count_; 1762 uint64_t start_ns_; 1763 std::unique_ptr<WatchDog> watchdog_; 1764 std::unique_ptr<File> oat_file_; 1765 std::string oat_stripped_; 1766 std::string oat_unstripped_; 1767 std::string oat_location_; 1768 std::string oat_filename_; 1769 int oat_fd_; 1770 std::vector<const char*> dex_filenames_; 1771 std::vector<const char*> dex_locations_; 1772 int zip_fd_; 1773 std::string zip_location_; 1774 std::string boot_image_option_; 1775 std::vector<const char*> runtime_args_; 1776 std::string image_filename_; 1777 uintptr_t image_base_; 1778 const char* image_classes_zip_filename_; 1779 const char* image_classes_filename_; 1780 const char* compiled_classes_zip_filename_; 1781 const char* compiled_classes_filename_; 1782 const char* compiled_methods_zip_filename_; 1783 const char* compiled_methods_filename_; 1784 std::unique_ptr<std::unordered_set<std::string>> image_classes_; 1785 std::unique_ptr<std::unordered_set<std::string>> compiled_classes_; 1786 std::unique_ptr<std::unordered_set<std::string>> compiled_methods_; 1787 bool image_; 1788 std::unique_ptr<ImageWriter> image_writer_; 1789 bool is_host_; 1790 std::string android_root_; 1791 std::vector<const DexFile*> dex_files_; 1792 std::vector<std::unique_ptr<const DexFile>> opened_dex_files_; 1793 std::unique_ptr<CompilerDriver> driver_; 1794 std::vector<std::string> verbose_methods_; 1795 bool dump_stats_; 1796 bool dump_passes_; 1797 bool dump_timing_; 1798 bool dump_slow_timing_; 1799 std::string dump_cfg_file_name_; 1800 std::string swap_file_name_; 1801 int swap_fd_; 1802 std::string profile_file_; // Profile file to use 1803 TimingLogger* timings_; 1804 std::unique_ptr<CumulativeLogger> compiler_phases_timings_; 1805 std::unique_ptr<std::ostream> init_failure_output_; 1806 1807 DISALLOW_IMPLICIT_CONSTRUCTORS(Dex2Oat); 1808}; 1809 1810static void b13564922() { 1811#if defined(__linux__) && defined(__arm__) 1812 int major, minor; 1813 struct utsname uts; 1814 if (uname(&uts) != -1 && 1815 sscanf(uts.release, "%d.%d", &major, &minor) == 2 && 1816 ((major < 3) || ((major == 3) && (minor < 4)))) { 1817 // Kernels before 3.4 don't handle the ASLR well and we can run out of address 1818 // space (http://b/13564922). Work around the issue by inhibiting further mmap() randomization. 1819 int old_personality = personality(0xffffffff); 1820 if ((old_personality & ADDR_NO_RANDOMIZE) == 0) { 1821 int new_personality = personality(old_personality | ADDR_NO_RANDOMIZE); 1822 if (new_personality == -1) { 1823 LOG(WARNING) << "personality(. | ADDR_NO_RANDOMIZE) failed."; 1824 } 1825 } 1826 } 1827#endif 1828} 1829 1830static int CompileImage(Dex2Oat& dex2oat) { 1831 dex2oat.Compile(); 1832 1833 // Create the boot.oat. 1834 if (!dex2oat.CreateOatFile()) { 1835 dex2oat.EraseOatFile(); 1836 return EXIT_FAILURE; 1837 } 1838 1839 // Flush and close the boot.oat. We always expect the output file by name, and it will be 1840 // re-opened from the unstripped name. 1841 if (!dex2oat.FlushCloseOatFile()) { 1842 return EXIT_FAILURE; 1843 } 1844 1845 // Creates the boot.art and patches the boot.oat. 1846 if (!dex2oat.HandleImage()) { 1847 return EXIT_FAILURE; 1848 } 1849 1850 // When given --host, finish early without stripping. 1851 if (dex2oat.IsHost()) { 1852 dex2oat.DumpTiming(); 1853 return EXIT_SUCCESS; 1854 } 1855 1856 // Copy unstripped to stripped location, if necessary. 1857 if (!dex2oat.CopyUnstrippedToStripped()) { 1858 return EXIT_FAILURE; 1859 } 1860 1861 // FlushClose again, as stripping might have re-opened the oat file. 1862 if (!dex2oat.FlushCloseOatFile()) { 1863 return EXIT_FAILURE; 1864 } 1865 1866 dex2oat.DumpTiming(); 1867 return EXIT_SUCCESS; 1868} 1869 1870static int CompileApp(Dex2Oat& dex2oat) { 1871 dex2oat.Compile(); 1872 1873 // Create the app oat. 1874 if (!dex2oat.CreateOatFile()) { 1875 dex2oat.EraseOatFile(); 1876 return EXIT_FAILURE; 1877 } 1878 1879 // Do not close the oat file here. We might haven gotten the output file by file descriptor, 1880 // which we would lose. 1881 if (!dex2oat.FlushOatFile()) { 1882 return EXIT_FAILURE; 1883 } 1884 1885 // When given --host, finish early without stripping. 1886 if (dex2oat.IsHost()) { 1887 if (!dex2oat.FlushCloseOatFile()) { 1888 return EXIT_FAILURE; 1889 } 1890 1891 dex2oat.DumpTiming(); 1892 return EXIT_SUCCESS; 1893 } 1894 1895 // Copy unstripped to stripped location, if necessary. This will implicitly flush & close the 1896 // unstripped version. If this is given, we expect to be able to open writable files by name. 1897 if (!dex2oat.CopyUnstrippedToStripped()) { 1898 return EXIT_FAILURE; 1899 } 1900 1901 // Flush and close the file. 1902 if (!dex2oat.FlushCloseOatFile()) { 1903 return EXIT_FAILURE; 1904 } 1905 1906 dex2oat.DumpTiming(); 1907 return EXIT_SUCCESS; 1908} 1909 1910static int dex2oat(int argc, char** argv) { 1911 b13564922(); 1912 1913 TimingLogger timings("compiler", false, false); 1914 1915 Dex2Oat dex2oat(&timings); 1916 1917 // Parse arguments. Argument mistakes will lead to exit(EXIT_FAILURE) in UsageError. 1918 dex2oat.ParseArgs(argc, argv); 1919 1920 // Check early that the result of compilation can be written 1921 if (!dex2oat.OpenFile()) { 1922 return EXIT_FAILURE; 1923 } 1924 1925 LOG(INFO) << CommandLine(); 1926 1927 if (!dex2oat.Setup()) { 1928 dex2oat.EraseOatFile(); 1929 return EXIT_FAILURE; 1930 } 1931 1932 if (dex2oat.IsImage()) { 1933 return CompileImage(dex2oat); 1934 } else { 1935 return CompileApp(dex2oat); 1936 } 1937} 1938} // namespace art 1939 1940int main(int argc, char** argv) { 1941 int result = art::dex2oat(argc, argv); 1942 // Everything was done, do an explicit exit here to avoid running Runtime destructors that take 1943 // time (bug 10645725) unless we're a debug build or running on valgrind. Note: The Dex2Oat class 1944 // should not destruct the runtime in this case. 1945 if (!art::kIsDebugBuild && (RUNNING_ON_VALGRIND == 0)) { 1946 exit(result); 1947 } 1948 return result; 1949} 1950