dex2oat.cc revision 4585f876eb5dfb936bd0d6cb6acd78a1f2182ba6
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(" --dex-file=<dex-file>: specifies a .dex, .jar, or .apk file to compile."); 113 UsageError(" Example: --dex-file=/system/framework/core.jar"); 114 UsageError(""); 115 UsageError(" --dex-location=<dex-location>: specifies an alternative dex location to"); 116 UsageError(" encode in the oat file for the corresponding --dex-file argument."); 117 UsageError(" Example: --dex-file=/home/build/out/system/framework/core.jar"); 118 UsageError(" --dex-location=/system/framework/core.jar"); 119 UsageError(""); 120 UsageError(" --zip-fd=<file-descriptor>: specifies a file descriptor of a zip file"); 121 UsageError(" containing a classes.dex file to compile."); 122 UsageError(" Example: --zip-fd=5"); 123 UsageError(""); 124 UsageError(" --zip-location=<zip-location>: specifies a symbolic name for the file"); 125 UsageError(" corresponding to the file descriptor specified by --zip-fd."); 126 UsageError(" Example: --zip-location=/system/app/Calculator.apk"); 127 UsageError(""); 128 UsageError(" --oat-file=<file.oat>: specifies the oat output destination via a filename."); 129 UsageError(" Example: --oat-file=/system/framework/boot.oat"); 130 UsageError(""); 131 UsageError(" --oat-fd=<number>: specifies the oat output destination via a file descriptor."); 132 UsageError(" Example: --oat-fd=6"); 133 UsageError(""); 134 UsageError(" --oat-location=<oat-name>: specifies a symbolic name for the file corresponding"); 135 UsageError(" to the file descriptor specified by --oat-fd."); 136 UsageError(" Example: --oat-location=/data/dalvik-cache/system@app@Calculator.apk.oat"); 137 UsageError(""); 138 UsageError(" --oat-symbols=<file.oat>: specifies the oat output destination with full symbols."); 139 UsageError(" Example: --oat-symbols=/symbols/system/framework/boot.oat"); 140 UsageError(""); 141 UsageError(" --image=<file.art>: specifies the output image filename."); 142 UsageError(" Example: --image=/system/framework/boot.art"); 143 UsageError(""); 144 UsageError(" --image-classes=<classname-file>: specifies classes to include in an image."); 145 UsageError(" Example: --image=frameworks/base/preloaded-classes"); 146 UsageError(""); 147 UsageError(" --base=<hex-address>: specifies the base address when creating a boot image."); 148 UsageError(" Example: --base=0x50000000"); 149 UsageError(""); 150 UsageError(" --boot-image=<file.art>: provide the image file for the boot class path."); 151 UsageError(" Example: --boot-image=/system/framework/boot.art"); 152 UsageError(" Default: $ANDROID_ROOT/system/framework/boot.art"); 153 UsageError(""); 154 UsageError(" --android-root=<path>: used to locate libraries for portable linking."); 155 UsageError(" Example: --android-root=out/host/linux-x86"); 156 UsageError(" Default: $ANDROID_ROOT"); 157 UsageError(""); 158 UsageError(" --instruction-set=(arm|arm64|mips|mips64|x86|x86_64): compile for a particular"); 159 UsageError(" instruction set."); 160 UsageError(" Example: --instruction-set=x86"); 161 UsageError(" Default: arm"); 162 UsageError(""); 163 UsageError(" --instruction-set-features=...,: Specify instruction set features"); 164 UsageError(" Example: --instruction-set-features=div"); 165 UsageError(" Default: default"); 166 UsageError(""); 167 UsageError(" --compile-pic: Force indirect use of code, methods, and classes"); 168 UsageError(" Default: disabled"); 169 UsageError(""); 170 UsageError(" --compiler-backend=(Quick|Optimizing): select compiler backend"); 171 UsageError(" set."); 172 UsageError(" Example: --compiler-backend=Optimizing"); 173 if (kUseOptimizingCompiler) { 174 UsageError(" Default: Optimizing"); 175 } else { 176 UsageError(" Default: Quick"); 177 } 178 UsageError(""); 179 UsageError(" --compiler-filter=" 180 "(verify-none" 181 "|interpret-only" 182 "|space" 183 "|balanced" 184 "|speed" 185 "|everything" 186 "|time):"); 187 UsageError(" select compiler filter."); 188 UsageError(" Example: --compiler-filter=everything"); 189 UsageError(" Default: speed"); 190 UsageError(""); 191 UsageError(" --huge-method-max=<method-instruction-count>: the threshold size for a huge"); 192 UsageError(" method for compiler filter tuning."); 193 UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold); 194 UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold); 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(" --runtime-arg <argument>: used to specify various arguments for the runtime,"); 235 UsageError(" such as initial heap size, maximum heap size, and verbose output."); 236 UsageError(" Use a separate --runtime-arg switch for each argument."); 237 UsageError(" Example: --runtime-arg -Xms256m"); 238 UsageError(""); 239 UsageError(" --profile-file=<filename>: specify profiler output file to use for compilation."); 240 UsageError(""); 241 UsageError(" --print-pass-names: print a list of pass names"); 242 UsageError(""); 243 UsageError(" --disable-passes=<pass-names>: disable one or more passes separated by comma."); 244 UsageError(" Example: --disable-passes=UseCount,BBOptimizations"); 245 UsageError(""); 246 UsageError(" --print-pass-options: print a list of passes that have configurable options along " 247 "with the setting."); 248 UsageError(" Will print default if no overridden setting exists."); 249 UsageError(""); 250 UsageError(" --pass-options=Pass1Name:Pass1OptionName:Pass1Option#," 251 "Pass2Name:Pass2OptionName:Pass2Option#"); 252 UsageError(" Used to specify a pass specific option. The setting itself must be integer."); 253 UsageError(" Separator used between options is a comma."); 254 UsageError(""); 255 UsageError(" --swap-file=<file-name>: specifies a file to use for swap."); 256 UsageError(" Example: --swap-file=/data/tmp/swap.001"); 257 UsageError(""); 258 UsageError(" --swap-fd=<file-descriptor>: specifies a file to use for swap (by descriptor)."); 259 UsageError(" Example: --swap-fd=10"); 260 UsageError(""); 261 std::cerr << "See log for usage error information\n"; 262 exit(EXIT_FAILURE); 263} 264 265// The primary goal of the watchdog is to prevent stuck build servers 266// during development when fatal aborts lead to a cascade of failures 267// that result in a deadlock. 268class WatchDog { 269// WatchDog defines its own CHECK_PTHREAD_CALL to avoid using LOG which uses locks 270#undef CHECK_PTHREAD_CALL 271#define CHECK_WATCH_DOG_PTHREAD_CALL(call, args, what) \ 272 do { \ 273 int rc = call args; \ 274 if (rc != 0) { \ 275 errno = rc; \ 276 std::string message(# call); \ 277 message += " failed for "; \ 278 message += reason; \ 279 Fatal(message); \ 280 } \ 281 } while (false) 282 283 public: 284 explicit WatchDog(bool is_watch_dog_enabled) { 285 is_watch_dog_enabled_ = is_watch_dog_enabled; 286 if (!is_watch_dog_enabled_) { 287 return; 288 } 289 shutting_down_ = false; 290 const char* reason = "dex2oat watch dog thread startup"; 291 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_init, (&mutex_, nullptr), reason); 292 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_init, (&cond_, nullptr), reason); 293 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_init, (&attr_), reason); 294 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_create, (&pthread_, &attr_, &CallBack, this), reason); 295 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_destroy, (&attr_), reason); 296 } 297 ~WatchDog() { 298 if (!is_watch_dog_enabled_) { 299 return; 300 } 301 const char* reason = "dex2oat watch dog thread shutdown"; 302 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 303 shutting_down_ = true; 304 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_signal, (&cond_), reason); 305 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 306 307 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_join, (pthread_, nullptr), reason); 308 309 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_destroy, (&cond_), reason); 310 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_destroy, (&mutex_), reason); 311 } 312 313 private: 314 static void* CallBack(void* arg) { 315 WatchDog* self = reinterpret_cast<WatchDog*>(arg); 316 ::art::SetThreadName("dex2oat watch dog"); 317 self->Wait(); 318 return nullptr; 319 } 320 321 static void Message(char severity, const std::string& message) { 322 // TODO: Remove when we switch to LOG when we can guarantee it won't prevent shutdown in error 323 // cases. 324 fprintf(stderr, "dex2oat%s %c %d %d %s\n", 325 kIsDebugBuild ? "d" : "", 326 severity, 327 getpid(), 328 GetTid(), 329 message.c_str()); 330 } 331 332 NO_RETURN static void Fatal(const std::string& message) { 333 Message('F', message); 334 exit(1); 335 } 336 337 void Wait() { 338 // TODO: tune the multiplier for GC verification, the following is just to make the timeout 339 // large. 340 int64_t multiplier = kVerifyObjectSupport > kVerifyObjectModeFast ? 100 : 1; 341 timespec timeout_ts; 342 InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogTimeoutSeconds * 1000, 0, &timeout_ts); 343 const char* reason = "dex2oat watch dog thread waiting"; 344 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 345 while (!shutting_down_) { 346 int rc = TEMP_FAILURE_RETRY(pthread_cond_timedwait(&cond_, &mutex_, &timeout_ts)); 347 if (rc == ETIMEDOUT) { 348 Fatal(StringPrintf("dex2oat did not finish after %d seconds", kWatchDogTimeoutSeconds)); 349 } else if (rc != 0) { 350 std::string message(StringPrintf("pthread_cond_timedwait failed: %s", 351 strerror(errno))); 352 Fatal(message.c_str()); 353 } 354 } 355 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 356 } 357 358 // When setting timeouts, keep in mind that the build server may not be as fast as your desktop. 359 // Debug builds are slower so they have larger timeouts. 360 static const unsigned int kSlowdownFactor = kIsDebugBuild ? 5U : 1U; 361 362 // 6 minutes scaled by kSlowdownFactor. 363 static const unsigned int kWatchDogTimeoutSeconds = kSlowdownFactor * 6 * 60; 364 365 bool is_watch_dog_enabled_; 366 bool shutting_down_; 367 // TODO: Switch to Mutex when we can guarantee it won't prevent shutdown in error cases. 368 pthread_mutex_t mutex_; 369 pthread_cond_t cond_; 370 pthread_attr_t attr_; 371 pthread_t pthread_; 372}; 373 374static void ParseStringAfterChar(const std::string& s, char c, std::string* parsed_value) { 375 std::string::size_type colon = s.find(c); 376 if (colon == std::string::npos) { 377 Usage("Missing char %c in option %s\n", c, s.c_str()); 378 } 379 // Add one to remove the char we were trimming until. 380 *parsed_value = s.substr(colon + 1); 381} 382 383static void ParseDouble(const std::string& option, char after_char, double min, double max, 384 double* parsed_value) { 385 std::string substring; 386 ParseStringAfterChar(option, after_char, &substring); 387 bool sane_val = true; 388 double value; 389 if (false) { 390 // TODO: this doesn't seem to work on the emulator. b/15114595 391 std::stringstream iss(substring); 392 iss >> value; 393 // Ensure that we have a value, there was no cruft after it and it satisfies a sensible range. 394 sane_val = iss.eof() && (value >= min) && (value <= max); 395 } else { 396 char* end = nullptr; 397 value = strtod(substring.c_str(), &end); 398 sane_val = *end == '\0' && value >= min && value <= max; 399 } 400 if (!sane_val) { 401 Usage("Invalid double value %s for option %s\n", substring.c_str(), option.c_str()); 402 } 403 *parsed_value = value; 404} 405 406static constexpr size_t kMinDexFilesForSwap = 2; 407static constexpr size_t kMinDexFileCumulativeSizeForSwap = 20 * MB; 408 409static bool UseSwap(bool is_image, std::vector<const DexFile*>& dex_files) { 410 if (is_image) { 411 // Don't use swap, we know generation should succeed, and we don't want to slow it down. 412 return false; 413 } 414 if (dex_files.size() < kMinDexFilesForSwap) { 415 // If there are less dex files than the threshold, assume it's gonna be fine. 416 return false; 417 } 418 size_t dex_files_size = 0; 419 for (const auto* dex_file : dex_files) { 420 dex_files_size += dex_file->GetHeader().file_size_; 421 } 422 return dex_files_size >= kMinDexFileCumulativeSizeForSwap; 423} 424 425class Dex2Oat FINAL { 426 public: 427 explicit Dex2Oat(TimingLogger* timings) : 428 compiler_kind_(kUseOptimizingCompiler ? Compiler::kOptimizing : Compiler::kQuick), 429 instruction_set_(kRuntimeISA), 430 // Take the default set of instruction features from the build. 431 method_inliner_map_(), 432 runtime_(nullptr), 433 thread_count_(sysconf(_SC_NPROCESSORS_CONF)), 434 start_ns_(NanoTime()), 435 oat_fd_(-1), 436 zip_fd_(-1), 437 image_base_(0U), 438 image_classes_zip_filename_(nullptr), 439 image_classes_filename_(nullptr), 440 compiled_classes_zip_filename_(nullptr), 441 compiled_classes_filename_(nullptr), 442 image_(false), 443 is_host_(false), 444 dump_stats_(false), 445 dump_passes_(false), 446 dump_timing_(false), 447 dump_slow_timing_(kIsDebugBuild), 448 swap_fd_(-1), 449 timings_(timings) {} 450 451 ~Dex2Oat() { 452 // Free opened dex files before deleting the runtime_, because ~DexFile 453 // uses MemMap, which is shut down by ~Runtime. 454 class_path_files_.clear(); 455 opened_dex_files_.clear(); 456 457 // Log completion time before deleting the runtime_, because this accesses 458 // the runtime. 459 LogCompletionTime(); 460 461 if (kIsDebugBuild || (RUNNING_ON_VALGRIND != 0)) { 462 delete runtime_; // See field declaration for why this is manual. 463 } 464 } 465 466 // Parse the arguments from the command line. In case of an unrecognized option or impossible 467 // values/combinations, a usage error will be displayed and exit() is called. Thus, if the method 468 // returns, arguments have been successfully parsed. 469 void ParseArgs(int argc, char** argv) { 470 original_argc = argc; 471 original_argv = argv; 472 473 InitLogging(argv); 474 475 // Skip over argv[0]. 476 argv++; 477 argc--; 478 479 if (argc == 0) { 480 Usage("No arguments specified"); 481 } 482 483 std::string oat_symbols; 484 std::string boot_image_filename; 485 const char* compiler_filter_string = nullptr; 486 bool compile_pic = false; 487 int huge_method_threshold = CompilerOptions::kDefaultHugeMethodThreshold; 488 int large_method_threshold = CompilerOptions::kDefaultLargeMethodThreshold; 489 int small_method_threshold = CompilerOptions::kDefaultSmallMethodThreshold; 490 int tiny_method_threshold = CompilerOptions::kDefaultTinyMethodThreshold; 491 int num_dex_methods_threshold = CompilerOptions::kDefaultNumDexMethodsThreshold; 492 493 // Profile file to use 494 double top_k_profile_threshold = CompilerOptions::kDefaultTopKProfileThreshold; 495 496 bool debuggable = false; 497 bool include_patch_information = CompilerOptions::kDefaultIncludePatchInformation; 498 bool include_debug_symbols = kIsDebugBuild; 499 bool watch_dog_enabled = true; 500 bool generate_gdb_information = kIsDebugBuild; 501 bool abort_on_hard_verifier_error = false; 502 bool requested_specific_compiler = false; 503 504 PassManagerOptions pass_manager_options; 505 506 std::string error_msg; 507 508 for (int i = 0; i < argc; i++) { 509 const StringPiece option(argv[i]); 510 const bool log_options = false; 511 if (log_options) { 512 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 513 } 514 if (option.starts_with("--dex-file=")) { 515 dex_filenames_.push_back(option.substr(strlen("--dex-file=")).data()); 516 } else if (option.starts_with("--dex-location=")) { 517 dex_locations_.push_back(option.substr(strlen("--dex-location=")).data()); 518 } else if (option.starts_with("--zip-fd=")) { 519 const char* zip_fd_str = option.substr(strlen("--zip-fd=")).data(); 520 if (!ParseInt(zip_fd_str, &zip_fd_)) { 521 Usage("Failed to parse --zip-fd argument '%s' as an integer", zip_fd_str); 522 } 523 if (zip_fd_ < 0) { 524 Usage("--zip-fd passed a negative value %d", zip_fd_); 525 } 526 } else if (option.starts_with("--zip-location=")) { 527 zip_location_ = option.substr(strlen("--zip-location=")).data(); 528 } else if (option.starts_with("--oat-file=")) { 529 oat_filename_ = option.substr(strlen("--oat-file=")).data(); 530 } else if (option.starts_with("--oat-symbols=")) { 531 oat_symbols = option.substr(strlen("--oat-symbols=")).data(); 532 } else if (option.starts_with("--oat-fd=")) { 533 const char* oat_fd_str = option.substr(strlen("--oat-fd=")).data(); 534 if (!ParseInt(oat_fd_str, &oat_fd_)) { 535 Usage("Failed to parse --oat-fd argument '%s' as an integer", oat_fd_str); 536 } 537 if (oat_fd_ < 0) { 538 Usage("--oat-fd passed a negative value %d", oat_fd_); 539 } 540 } else if (option == "--watch-dog") { 541 watch_dog_enabled = true; 542 } else if (option == "--no-watch-dog") { 543 watch_dog_enabled = false; 544 } else if (option == "--gen-gdb-info") { 545 generate_gdb_information = true; 546 // Debug symbols are needed for gdb information. 547 include_debug_symbols = true; 548 } else if (option == "--no-gen-gdb-info") { 549 generate_gdb_information = false; 550 } else if (option.starts_with("-j")) { 551 const char* thread_count_str = option.substr(strlen("-j")).data(); 552 if (!ParseUint(thread_count_str, &thread_count_)) { 553 Usage("Failed to parse -j argument '%s' as an integer", thread_count_str); 554 } 555 } else if (option.starts_with("--oat-location=")) { 556 oat_location_ = option.substr(strlen("--oat-location=")).data(); 557 } else if (option.starts_with("--image=")) { 558 image_filename_ = option.substr(strlen("--image=")).data(); 559 } else if (option.starts_with("--image-classes=")) { 560 image_classes_filename_ = option.substr(strlen("--image-classes=")).data(); 561 } else if (option.starts_with("--image-classes-zip=")) { 562 image_classes_zip_filename_ = option.substr(strlen("--image-classes-zip=")).data(); 563 } else if (option.starts_with("--compiled-classes=")) { 564 compiled_classes_filename_ = option.substr(strlen("--compiled-classes=")).data(); 565 } else if (option.starts_with("--compiled-classes-zip=")) { 566 compiled_classes_zip_filename_ = option.substr(strlen("--compiled-classes-zip=")).data(); 567 } else if (option.starts_with("--base=")) { 568 const char* image_base_str = option.substr(strlen("--base=")).data(); 569 char* end; 570 image_base_ = strtoul(image_base_str, &end, 16); 571 if (end == image_base_str || *end != '\0') { 572 Usage("Failed to parse hexadecimal value for option %s", option.data()); 573 } 574 } else if (option.starts_with("--boot-image=")) { 575 boot_image_filename = option.substr(strlen("--boot-image=")).data(); 576 } else if (option.starts_with("--android-root=")) { 577 android_root_ = option.substr(strlen("--android-root=")).data(); 578 } else if (option.starts_with("--instruction-set=")) { 579 StringPiece instruction_set_str = option.substr(strlen("--instruction-set=")).data(); 580 // StringPiece is not necessarily zero-terminated, so need to make a copy and ensure it. 581 std::unique_ptr<char[]> buf(new char[instruction_set_str.length() + 1]); 582 strncpy(buf.get(), instruction_set_str.data(), instruction_set_str.length()); 583 buf.get()[instruction_set_str.length()] = 0; 584 instruction_set_ = GetInstructionSetFromString(buf.get()); 585 // arm actually means thumb2. 586 if (instruction_set_ == InstructionSet::kArm) { 587 instruction_set_ = InstructionSet::kThumb2; 588 } 589 } else if (option.starts_with("--instruction-set-variant=")) { 590 StringPiece str = option.substr(strlen("--instruction-set-variant=")).data(); 591 instruction_set_features_.reset( 592 InstructionSetFeatures::FromVariant(instruction_set_, str.as_string(), &error_msg)); 593 if (instruction_set_features_.get() == nullptr) { 594 Usage("%s", error_msg.c_str()); 595 } 596 } else if (option.starts_with("--instruction-set-features=")) { 597 StringPiece str = option.substr(strlen("--instruction-set-features=")).data(); 598 if (instruction_set_features_.get() == nullptr) { 599 instruction_set_features_.reset( 600 InstructionSetFeatures::FromVariant(instruction_set_, "default", &error_msg)); 601 if (instruction_set_features_.get() == nullptr) { 602 Usage("Problem initializing default instruction set features variant: %s", 603 error_msg.c_str()); 604 } 605 } 606 instruction_set_features_.reset( 607 instruction_set_features_->AddFeaturesFromString(str.as_string(), &error_msg)); 608 if (instruction_set_features_.get() == nullptr) { 609 Usage("Error parsing '%s': %s", option.data(), error_msg.c_str()); 610 } 611 } else if (option.starts_with("--compiler-backend=")) { 612 requested_specific_compiler = true; 613 StringPiece backend_str = option.substr(strlen("--compiler-backend=")).data(); 614 if (backend_str == "Quick") { 615 compiler_kind_ = Compiler::kQuick; 616 } else if (backend_str == "Optimizing") { 617 compiler_kind_ = Compiler::kOptimizing; 618 } else { 619 Usage("Unknown compiler backend: %s", backend_str.data()); 620 } 621 } else if (option.starts_with("--compiler-filter=")) { 622 compiler_filter_string = option.substr(strlen("--compiler-filter=")).data(); 623 } else if (option == "--compile-pic") { 624 compile_pic = true; 625 } else if (option.starts_with("--huge-method-max=")) { 626 const char* threshold = option.substr(strlen("--huge-method-max=")).data(); 627 if (!ParseInt(threshold, &huge_method_threshold)) { 628 Usage("Failed to parse --huge-method-max '%s' as an integer", threshold); 629 } 630 if (huge_method_threshold < 0) { 631 Usage("--huge-method-max passed a negative value %s", huge_method_threshold); 632 } 633 } else if (option.starts_with("--large-method-max=")) { 634 const char* threshold = option.substr(strlen("--large-method-max=")).data(); 635 if (!ParseInt(threshold, &large_method_threshold)) { 636 Usage("Failed to parse --large-method-max '%s' as an integer", threshold); 637 } 638 if (large_method_threshold < 0) { 639 Usage("--large-method-max passed a negative value %s", large_method_threshold); 640 } 641 } else if (option.starts_with("--small-method-max=")) { 642 const char* threshold = option.substr(strlen("--small-method-max=")).data(); 643 if (!ParseInt(threshold, &small_method_threshold)) { 644 Usage("Failed to parse --small-method-max '%s' as an integer", threshold); 645 } 646 if (small_method_threshold < 0) { 647 Usage("--small-method-max passed a negative value %s", small_method_threshold); 648 } 649 } else if (option.starts_with("--tiny-method-max=")) { 650 const char* threshold = option.substr(strlen("--tiny-method-max=")).data(); 651 if (!ParseInt(threshold, &tiny_method_threshold)) { 652 Usage("Failed to parse --tiny-method-max '%s' as an integer", threshold); 653 } 654 if (tiny_method_threshold < 0) { 655 Usage("--tiny-method-max passed a negative value %s", tiny_method_threshold); 656 } 657 } else if (option.starts_with("--num-dex-methods=")) { 658 const char* threshold = option.substr(strlen("--num-dex-methods=")).data(); 659 if (!ParseInt(threshold, &num_dex_methods_threshold)) { 660 Usage("Failed to parse --num-dex-methods '%s' as an integer", threshold); 661 } 662 if (num_dex_methods_threshold < 0) { 663 Usage("--num-dex-methods passed a negative value %s", num_dex_methods_threshold); 664 } 665 } else if (option == "--host") { 666 is_host_ = true; 667 } else if (option == "--runtime-arg") { 668 if (++i >= argc) { 669 Usage("Missing required argument for --runtime-arg"); 670 } 671 if (log_options) { 672 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 673 } 674 runtime_args_.push_back(argv[i]); 675 } else if (option == "--dump-timing") { 676 dump_timing_ = true; 677 } else if (option == "--dump-passes") { 678 dump_passes_ = true; 679 } else if (option.starts_with("--dump-cfg=")) { 680 dump_cfg_file_name_ = option.substr(strlen("--dump-cfg=")).data(); 681 } else if (option == "--dump-stats") { 682 dump_stats_ = true; 683 } else if (option == "--include-debug-symbols" || option == "--no-strip-symbols") { 684 include_debug_symbols = true; 685 } else if (option == "--no-include-debug-symbols" || option == "--strip-symbols") { 686 include_debug_symbols = false; 687 generate_gdb_information = false; // Depends on debug symbols, see above. 688 } else if (option == "--debuggable") { 689 debuggable = true; 690 } else if (option.starts_with("--profile-file=")) { 691 profile_file_ = option.substr(strlen("--profile-file=")).data(); 692 VLOG(compiler) << "dex2oat: profile file is " << profile_file_; 693 } else if (option == "--no-profile-file") { 694 // No profile 695 } else if (option.starts_with("--top-k-profile-threshold=")) { 696 ParseDouble(option.data(), '=', 0.0, 100.0, &top_k_profile_threshold); 697 } else if (option == "--print-pass-names") { 698 pass_manager_options.SetPrintPassNames(true); 699 } else if (option.starts_with("--disable-passes=")) { 700 const std::string disable_passes = option.substr(strlen("--disable-passes=")).data(); 701 pass_manager_options.SetDisablePassList(disable_passes); 702 } else if (option.starts_with("--print-passes=")) { 703 const std::string print_passes = option.substr(strlen("--print-passes=")).data(); 704 pass_manager_options.SetPrintPassList(print_passes); 705 } else if (option == "--print-all-passes") { 706 pass_manager_options.SetPrintAllPasses(); 707 } else if (option.starts_with("--dump-cfg-passes=")) { 708 const std::string dump_passes_string = option.substr(strlen("--dump-cfg-passes=")).data(); 709 pass_manager_options.SetDumpPassList(dump_passes_string); 710 } else if (option == "--print-pass-options") { 711 pass_manager_options.SetPrintPassOptions(true); 712 } else if (option.starts_with("--pass-options=")) { 713 const std::string options = option.substr(strlen("--pass-options=")).data(); 714 pass_manager_options.SetOverriddenPassOptions(options); 715 } else if (option == "--include-patch-information") { 716 include_patch_information = true; 717 } else if (option == "--no-include-patch-information") { 718 include_patch_information = false; 719 } else if (option.starts_with("--verbose-methods=")) { 720 // TODO: rather than switch off compiler logging, make all VLOG(compiler) messages 721 // conditional on having verbost methods. 722 gLogVerbosity.compiler = false; 723 Split(option.substr(strlen("--verbose-methods=")).ToString(), ',', &verbose_methods_); 724 } else if (option.starts_with("--dump-init-failures=")) { 725 std::string file_name = option.substr(strlen("--dump-init-failures=")).data(); 726 init_failure_output_.reset(new std::ofstream(file_name)); 727 if (init_failure_output_.get() == nullptr) { 728 LOG(ERROR) << "Failed to allocate ofstream"; 729 } else if (init_failure_output_->fail()) { 730 LOG(ERROR) << "Failed to open " << file_name << " for writing the initialization " 731 << "failures."; 732 init_failure_output_.reset(); 733 } 734 } else if (option.starts_with("--swap-file=")) { 735 swap_file_name_ = option.substr(strlen("--swap-file=")).data(); 736 } else if (option.starts_with("--swap-fd=")) { 737 const char* swap_fd_str = option.substr(strlen("--swap-fd=")).data(); 738 if (!ParseInt(swap_fd_str, &swap_fd_)) { 739 Usage("Failed to parse --swap-fd argument '%s' as an integer", swap_fd_str); 740 } 741 if (swap_fd_ < 0) { 742 Usage("--swap-fd passed a negative value %d", swap_fd_); 743 } 744 } else if (option == "--abort-on-hard-verifier-error") { 745 abort_on_hard_verifier_error = true; 746 } else { 747 Usage("Unknown argument %s", option.data()); 748 } 749 } 750 751 image_ = (!image_filename_.empty()); 752 if (!requested_specific_compiler && !kUseOptimizingCompiler) { 753 // If no specific compiler is requested, the current behavior is 754 // to compile the boot image with Quick, and the rest with Optimizing. 755 compiler_kind_ = image_ ? Compiler::kQuick : Compiler::kOptimizing; 756 } 757 758 if (compiler_kind_ == Compiler::kOptimizing) { 759 // Optimizing only supports PIC mode. 760 compile_pic = true; 761 } 762 763 if (oat_filename_.empty() && oat_fd_ == -1) { 764 Usage("Output must be supplied with either --oat-file or --oat-fd"); 765 } 766 767 if (!oat_filename_.empty() && oat_fd_ != -1) { 768 Usage("--oat-file should not be used with --oat-fd"); 769 } 770 771 if (!oat_symbols.empty() && oat_fd_ != -1) { 772 Usage("--oat-symbols should not be used with --oat-fd"); 773 } 774 775 if (!oat_symbols.empty() && is_host_) { 776 Usage("--oat-symbols should not be used with --host"); 777 } 778 779 if (oat_fd_ != -1 && !image_filename_.empty()) { 780 Usage("--oat-fd should not be used with --image"); 781 } 782 783 if (android_root_.empty()) { 784 const char* android_root_env_var = getenv("ANDROID_ROOT"); 785 if (android_root_env_var == nullptr) { 786 Usage("--android-root unspecified and ANDROID_ROOT not set"); 787 } 788 android_root_ += android_root_env_var; 789 } 790 791 if (!image_ && boot_image_filename.empty()) { 792 boot_image_filename += android_root_; 793 boot_image_filename += "/framework/boot.art"; 794 } 795 if (!boot_image_filename.empty()) { 796 boot_image_option_ += "-Ximage:"; 797 boot_image_option_ += boot_image_filename; 798 } 799 800 if (image_classes_filename_ != nullptr && !image_) { 801 Usage("--image-classes should only be used with --image"); 802 } 803 804 if (image_classes_filename_ != nullptr && !boot_image_option_.empty()) { 805 Usage("--image-classes should not be used with --boot-image"); 806 } 807 808 if (image_classes_zip_filename_ != nullptr && image_classes_filename_ == nullptr) { 809 Usage("--image-classes-zip should be used with --image-classes"); 810 } 811 812 if (compiled_classes_filename_ != nullptr && !image_) { 813 Usage("--compiled-classes should only be used with --image"); 814 } 815 816 if (compiled_classes_filename_ != nullptr && !boot_image_option_.empty()) { 817 Usage("--compiled-classes should not be used with --boot-image"); 818 } 819 820 if (compiled_classes_zip_filename_ != nullptr && compiled_classes_filename_ == nullptr) { 821 Usage("--compiled-classes-zip should be used with --compiled-classes"); 822 } 823 824 if (dex_filenames_.empty() && zip_fd_ == -1) { 825 Usage("Input must be supplied with either --dex-file or --zip-fd"); 826 } 827 828 if (!dex_filenames_.empty() && zip_fd_ != -1) { 829 Usage("--dex-file should not be used with --zip-fd"); 830 } 831 832 if (!dex_filenames_.empty() && !zip_location_.empty()) { 833 Usage("--dex-file should not be used with --zip-location"); 834 } 835 836 if (dex_locations_.empty()) { 837 for (const char* dex_file_name : dex_filenames_) { 838 dex_locations_.push_back(dex_file_name); 839 } 840 } else if (dex_locations_.size() != dex_filenames_.size()) { 841 Usage("--dex-location arguments do not match --dex-file arguments"); 842 } 843 844 if (zip_fd_ != -1 && zip_location_.empty()) { 845 Usage("--zip-location should be supplied with --zip-fd"); 846 } 847 848 if (boot_image_option_.empty()) { 849 if (image_base_ == 0) { 850 Usage("Non-zero --base not specified"); 851 } 852 } 853 854 oat_stripped_ = oat_filename_; 855 if (!oat_symbols.empty()) { 856 oat_unstripped_ = oat_symbols; 857 } else { 858 oat_unstripped_ = oat_filename_; 859 } 860 861 // If no instruction set feature was given, use the default one for the target 862 // instruction set. 863 if (instruction_set_features_.get() == nullptr) { 864 instruction_set_features_.reset( 865 InstructionSetFeatures::FromVariant(instruction_set_, "default", &error_msg)); 866 if (instruction_set_features_.get() == nullptr) { 867 Usage("Problem initializing default instruction set features variant: %s", 868 error_msg.c_str()); 869 } 870 } 871 872 if (instruction_set_ == kRuntimeISA) { 873 std::unique_ptr<const InstructionSetFeatures> runtime_features( 874 InstructionSetFeatures::FromCppDefines()); 875 if (!instruction_set_features_->Equals(runtime_features.get())) { 876 LOG(WARNING) << "Mismatch between dex2oat instruction set features (" 877 << *instruction_set_features_ << ") and those of dex2oat executable (" 878 << *runtime_features <<") for the command line:\n" 879 << CommandLine(); 880 } 881 } 882 883 if (compiler_filter_string == nullptr) { 884 compiler_filter_string = "speed"; 885 } 886 887 CHECK(compiler_filter_string != nullptr); 888 CompilerOptions::CompilerFilter compiler_filter = CompilerOptions::kDefaultCompilerFilter; 889 if (strcmp(compiler_filter_string, "verify-none") == 0) { 890 compiler_filter = CompilerOptions::kVerifyNone; 891 } else if (strcmp(compiler_filter_string, "interpret-only") == 0) { 892 compiler_filter = CompilerOptions::kInterpretOnly; 893 } else if (strcmp(compiler_filter_string, "verify-at-runtime") == 0) { 894 compiler_filter = CompilerOptions::kVerifyAtRuntime; 895 } else if (strcmp(compiler_filter_string, "space") == 0) { 896 compiler_filter = CompilerOptions::kSpace; 897 } else if (strcmp(compiler_filter_string, "balanced") == 0) { 898 compiler_filter = CompilerOptions::kBalanced; 899 } else if (strcmp(compiler_filter_string, "speed") == 0) { 900 compiler_filter = CompilerOptions::kSpeed; 901 } else if (strcmp(compiler_filter_string, "everything") == 0) { 902 compiler_filter = CompilerOptions::kEverything; 903 } else if (strcmp(compiler_filter_string, "time") == 0) { 904 compiler_filter = CompilerOptions::kTime; 905 } else { 906 Usage("Unknown --compiler-filter value %s", compiler_filter_string); 907 } 908 909 // Checks are all explicit until we know the architecture. 910 bool implicit_null_checks = false; 911 bool implicit_so_checks = false; 912 bool implicit_suspend_checks = false; 913 // Set the compilation target's implicit checks options. 914 switch (instruction_set_) { 915 case kArm: 916 case kThumb2: 917 case kArm64: 918 case kX86: 919 case kX86_64: 920 implicit_null_checks = true; 921 implicit_so_checks = true; 922 break; 923 924 default: 925 // Defaults are correct. 926 break; 927 } 928 929 if (debuggable) { 930 // TODO: Consider adding CFI info and symbols here. 931 } 932 933 compiler_options_.reset(new CompilerOptions(compiler_filter, 934 huge_method_threshold, 935 large_method_threshold, 936 small_method_threshold, 937 tiny_method_threshold, 938 num_dex_methods_threshold, 939 generate_gdb_information, 940 include_patch_information, 941 top_k_profile_threshold, 942 debuggable, 943 include_debug_symbols, 944 implicit_null_checks, 945 implicit_so_checks, 946 implicit_suspend_checks, 947 compile_pic, 948 verbose_methods_.empty() ? 949 nullptr : 950 &verbose_methods_, 951 new PassManagerOptions(pass_manager_options), 952 init_failure_output_.get(), 953 abort_on_hard_verifier_error)); 954 955 // Done with usage checks, enable watchdog if requested 956 if (watch_dog_enabled) { 957 watchdog_.reset(new WatchDog(true)); 958 } 959 960 // Fill some values into the key-value store for the oat header. 961 key_value_store_.reset(new SafeMap<std::string, std::string>()); 962 963 // Insert some compiler things. 964 { 965 std::ostringstream oss; 966 for (int i = 0; i < argc; ++i) { 967 if (i > 0) { 968 oss << ' '; 969 } 970 oss << argv[i]; 971 } 972 key_value_store_->Put(OatHeader::kDex2OatCmdLineKey, oss.str()); 973 oss.str(""); // Reset. 974 oss << kRuntimeISA; 975 key_value_store_->Put(OatHeader::kDex2OatHostKey, oss.str()); 976 key_value_store_->Put(OatHeader::kPicKey, compile_pic ? "true" : "false"); 977 } 978 } 979 980 // Check whether the oat output file is writable, and open it for later. Also open a swap file, 981 // if a name is given. 982 bool OpenFile() { 983 bool create_file = !oat_unstripped_.empty(); // as opposed to using open file descriptor 984 if (create_file) { 985 oat_file_.reset(OS::CreateEmptyFile(oat_unstripped_.c_str())); 986 if (oat_location_.empty()) { 987 oat_location_ = oat_filename_; 988 } 989 } else { 990 oat_file_.reset(new File(oat_fd_, oat_location_, true)); 991 oat_file_->DisableAutoClose(); 992 if (oat_file_->SetLength(0) != 0) { 993 PLOG(WARNING) << "Truncating oat file " << oat_location_ << " failed."; 994 } 995 } 996 if (oat_file_.get() == nullptr) { 997 PLOG(ERROR) << "Failed to create oat file: " << oat_location_; 998 return false; 999 } 1000 if (create_file && fchmod(oat_file_->Fd(), 0644) != 0) { 1001 PLOG(ERROR) << "Failed to make oat file world readable: " << oat_location_; 1002 oat_file_->Erase(); 1003 return false; 1004 } 1005 1006 // Swap file handling. 1007 // 1008 // If the swap fd is not -1, we assume this is the file descriptor of an open but unlinked file 1009 // that we can use for swap. 1010 // 1011 // If the swap fd is -1 and we have a swap-file string, open the given file as a swap file. We 1012 // will immediately unlink to satisfy the swap fd assumption. 1013 if (swap_fd_ == -1 && !swap_file_name_.empty()) { 1014 std::unique_ptr<File> swap_file(OS::CreateEmptyFile(swap_file_name_.c_str())); 1015 if (swap_file.get() == nullptr) { 1016 PLOG(ERROR) << "Failed to create swap file: " << swap_file_name_; 1017 return false; 1018 } 1019 swap_fd_ = swap_file->Fd(); 1020 swap_file->MarkUnchecked(); // We don't we to track this, it will be unlinked immediately. 1021 swap_file->DisableAutoClose(); // We'll handle it ourselves, the File object will be 1022 // released immediately. 1023 unlink(swap_file_name_.c_str()); 1024 } 1025 1026 return true; 1027 } 1028 1029 void EraseOatFile() { 1030 DCHECK(oat_file_.get() != nullptr); 1031 oat_file_->Erase(); 1032 oat_file_.reset(); 1033 } 1034 1035 // Set up the environment for compilation. Includes starting the runtime and loading/opening the 1036 // boot class path. 1037 bool Setup() { 1038 TimingLogger::ScopedTiming t("dex2oat Setup", timings_); 1039 RuntimeOptions runtime_options; 1040 art::MemMap::Init(); // For ZipEntry::ExtractToMemMap. 1041 if (boot_image_option_.empty()) { 1042 std::string boot_class_path = "-Xbootclasspath:"; 1043 boot_class_path += Join(dex_filenames_, ':'); 1044 runtime_options.push_back(std::make_pair(boot_class_path, nullptr)); 1045 std::string boot_class_path_locations = "-Xbootclasspath-locations:"; 1046 boot_class_path_locations += Join(dex_locations_, ':'); 1047 runtime_options.push_back(std::make_pair(boot_class_path_locations, nullptr)); 1048 } else { 1049 runtime_options.push_back(std::make_pair(boot_image_option_, nullptr)); 1050 } 1051 for (size_t i = 0; i < runtime_args_.size(); i++) { 1052 runtime_options.push_back(std::make_pair(runtime_args_[i], nullptr)); 1053 } 1054 1055 verification_results_.reset(new VerificationResults(compiler_options_.get())); 1056 callbacks_.reset(new QuickCompilerCallbacks( 1057 verification_results_.get(), 1058 &method_inliner_map_, 1059 image_ ? 1060 CompilerCallbacks::CallbackMode::kCompileBootImage : 1061 CompilerCallbacks::CallbackMode::kCompileApp)); 1062 runtime_options.push_back(std::make_pair("compilercallbacks", callbacks_.get())); 1063 runtime_options.push_back( 1064 std::make_pair("imageinstructionset", GetInstructionSetString(instruction_set_))); 1065 1066 // Only allow no boot image for the runtime if we're compiling one. When we compile an app, 1067 // we don't want fallback mode, it will abort as we do not push a boot classpath (it might 1068 // have been stripped in preopting, anyways). 1069 if (!image_) { 1070 runtime_options.push_back(std::make_pair("-Xno-dex-file-fallback", nullptr)); 1071 } 1072 1073 if (!CreateRuntime(runtime_options)) { 1074 return false; 1075 } 1076 1077 // Runtime::Create acquired the mutator_lock_ that is normally given away when we 1078 // Runtime::Start, give it away now so that we don't starve GC. 1079 Thread* self = Thread::Current(); 1080 self->TransitionFromRunnableToSuspended(kNative); 1081 // If we're doing the image, override the compiler filter to force full compilation. Must be 1082 // done ahead of WellKnownClasses::Init that causes verification. Note: doesn't force 1083 // compilation of class initializers. 1084 // Whilst we're in native take the opportunity to initialize well known classes. 1085 WellKnownClasses::Init(self->GetJniEnv()); 1086 1087 // If --image-classes was specified, calculate the full list of classes to include in the image 1088 if (image_classes_filename_ != nullptr) { 1089 std::string error_msg; 1090 if (image_classes_zip_filename_ != nullptr) { 1091 image_classes_.reset(ReadImageClassesFromZip(image_classes_zip_filename_, 1092 image_classes_filename_, 1093 &error_msg)); 1094 } else { 1095 image_classes_.reset(ReadImageClassesFromFile(image_classes_filename_)); 1096 } 1097 if (image_classes_.get() == nullptr) { 1098 LOG(ERROR) << "Failed to create list of image classes from '" << image_classes_filename_ << 1099 "': " << error_msg; 1100 return false; 1101 } 1102 } else if (image_) { 1103 image_classes_.reset(new std::set<std::string>); 1104 } 1105 // If --compiled-classes was specified, calculate the full list of classes to compile in the 1106 // image. 1107 if (compiled_classes_filename_ != nullptr) { 1108 std::string error_msg; 1109 if (compiled_classes_zip_filename_ != nullptr) { 1110 compiled_classes_.reset(ReadImageClassesFromZip(compiled_classes_zip_filename_, 1111 compiled_classes_filename_, 1112 &error_msg)); 1113 } else { 1114 compiled_classes_.reset(ReadImageClassesFromFile(compiled_classes_filename_)); 1115 } 1116 if (compiled_classes_.get() == nullptr) { 1117 LOG(ERROR) << "Failed to create list of compiled classes from '" 1118 << compiled_classes_filename_ << "': " << error_msg; 1119 return false; 1120 } 1121 } else if (image_) { 1122 compiled_classes_.reset(nullptr); // By default compile everything. 1123 } 1124 1125 if (boot_image_option_.empty()) { 1126 dex_files_ = Runtime::Current()->GetClassLinker()->GetBootClassPath(); 1127 } else { 1128 if (dex_filenames_.empty()) { 1129 ATRACE_BEGIN("Opening zip archive from file descriptor"); 1130 std::string error_msg; 1131 std::unique_ptr<ZipArchive> zip_archive(ZipArchive::OpenFromFd(zip_fd_, 1132 zip_location_.c_str(), 1133 &error_msg)); 1134 if (zip_archive.get() == nullptr) { 1135 LOG(ERROR) << "Failed to open zip from file descriptor for '" << zip_location_ << "': " 1136 << error_msg; 1137 return false; 1138 } 1139 if (!DexFile::OpenFromZip(*zip_archive.get(), zip_location_, &error_msg, &opened_dex_files_)) { 1140 LOG(ERROR) << "Failed to open dex from file descriptor for zip file '" << zip_location_ 1141 << "': " << error_msg; 1142 return false; 1143 } 1144 for (auto& dex_file : opened_dex_files_) { 1145 dex_files_.push_back(dex_file.get()); 1146 } 1147 ATRACE_END(); 1148 } else { 1149 size_t failure_count = OpenDexFiles(dex_filenames_, dex_locations_, &opened_dex_files_); 1150 if (failure_count > 0) { 1151 LOG(ERROR) << "Failed to open some dex files: " << failure_count; 1152 return false; 1153 } 1154 for (auto& dex_file : opened_dex_files_) { 1155 dex_files_.push_back(dex_file.get()); 1156 } 1157 } 1158 1159 constexpr bool kSaveDexInput = false; 1160 if (kSaveDexInput) { 1161 for (size_t i = 0; i < dex_files_.size(); ++i) { 1162 const DexFile* dex_file = dex_files_[i]; 1163 std::string tmp_file_name(StringPrintf("/data/local/tmp/dex2oat.%d.%zd.dex", 1164 getpid(), i)); 1165 std::unique_ptr<File> tmp_file(OS::CreateEmptyFile(tmp_file_name.c_str())); 1166 if (tmp_file.get() == nullptr) { 1167 PLOG(ERROR) << "Failed to open file " << tmp_file_name 1168 << ". Try: adb shell chmod 777 /data/local/tmp"; 1169 continue; 1170 } 1171 // This is just dumping files for debugging. Ignore errors, and leave remnants. 1172 UNUSED(tmp_file->WriteFully(dex_file->Begin(), dex_file->Size())); 1173 UNUSED(tmp_file->Flush()); 1174 UNUSED(tmp_file->Close()); 1175 LOG(INFO) << "Wrote input to " << tmp_file_name; 1176 } 1177 } 1178 } 1179 // Ensure opened dex files are writable for dex-to-dex transformations. 1180 for (const auto& dex_file : dex_files_) { 1181 if (!dex_file->EnableWrite()) { 1182 PLOG(ERROR) << "Failed to make .dex file writeable '" << dex_file->GetLocation() << "'\n"; 1183 } 1184 } 1185 1186 // If we use a swap file, ensure we are above the threshold to make it necessary. 1187 if (swap_fd_ != -1) { 1188 if (!UseSwap(image_, dex_files_)) { 1189 close(swap_fd_); 1190 swap_fd_ = -1; 1191 LOG(INFO) << "Decided to run without swap."; 1192 } else { 1193 LOG(INFO) << "Accepted running with swap."; 1194 } 1195 } 1196 // Note that dex2oat won't close the swap_fd_. The compiler driver's swap space will do that. 1197 1198 /* 1199 * If we're not in interpret-only or verify-none mode, go ahead and compile small applications. 1200 * Don't bother to check if we're doing the image. 1201 */ 1202 if (!image_ && 1203 compiler_options_->IsCompilationEnabled() && 1204 compiler_kind_ == Compiler::kQuick) { 1205 size_t num_methods = 0; 1206 for (size_t i = 0; i != dex_files_.size(); ++i) { 1207 const DexFile* dex_file = dex_files_[i]; 1208 CHECK(dex_file != nullptr); 1209 num_methods += dex_file->NumMethodIds(); 1210 } 1211 if (num_methods <= compiler_options_->GetNumDexMethodsThreshold()) { 1212 compiler_options_->SetCompilerFilter(CompilerOptions::kSpeed); 1213 VLOG(compiler) << "Below method threshold, compiling anyways"; 1214 } 1215 } 1216 1217 return true; 1218 } 1219 1220 // Create and invoke the compiler driver. This will compile all the dex files. 1221 void Compile() { 1222 TimingLogger::ScopedTiming t("dex2oat Compile", timings_); 1223 compiler_phases_timings_.reset(new CumulativeLogger("compilation times")); 1224 1225 // Handle and ClassLoader creation needs to come after Runtime::Create 1226 jobject class_loader = nullptr; 1227 Thread* self = Thread::Current(); 1228 if (!boot_image_option_.empty()) { 1229 ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 1230 OpenClassPathFiles(runtime_->GetClassPathString(), dex_files_, &class_path_files_); 1231 ScopedObjectAccess soa(self); 1232 1233 // Classpath: first the class-path given. 1234 std::vector<const DexFile*> class_path_files; 1235 for (auto& class_path_file : class_path_files_) { 1236 class_path_files.push_back(class_path_file.get()); 1237 } 1238 // Then the dex files we'll compile. Thus we'll resolve the class-path first. 1239 class_path_files.insert(class_path_files.end(), dex_files_.begin(), dex_files_.end()); 1240 1241 class_loader = class_linker->CreatePathClassLoader(self, class_path_files); 1242 } 1243 1244 driver_.reset(new CompilerDriver(compiler_options_.get(), 1245 verification_results_.get(), 1246 &method_inliner_map_, 1247 compiler_kind_, 1248 instruction_set_, 1249 instruction_set_features_.get(), 1250 image_, 1251 image_classes_.release(), 1252 compiled_classes_.release(), 1253 thread_count_, 1254 dump_stats_, 1255 dump_passes_, 1256 dump_cfg_file_name_, 1257 compiler_phases_timings_.get(), 1258 swap_fd_, 1259 profile_file_)); 1260 1261 driver_->CompileAll(class_loader, dex_files_, timings_); 1262 } 1263 1264 // Notes on the interleaving of creating the image and oat file to 1265 // ensure the references between the two are correct. 1266 // 1267 // Currently we have a memory layout that looks something like this: 1268 // 1269 // +--------------+ 1270 // | image | 1271 // +--------------+ 1272 // | boot oat | 1273 // +--------------+ 1274 // | alloc spaces | 1275 // +--------------+ 1276 // 1277 // There are several constraints on the loading of the image and boot.oat. 1278 // 1279 // 1. The image is expected to be loaded at an absolute address and 1280 // contains Objects with absolute pointers within the image. 1281 // 1282 // 2. There are absolute pointers from Methods in the image to their 1283 // code in the oat. 1284 // 1285 // 3. There are absolute pointers from the code in the oat to Methods 1286 // in the image. 1287 // 1288 // 4. There are absolute pointers from code in the oat to other code 1289 // in the oat. 1290 // 1291 // To get this all correct, we go through several steps. 1292 // 1293 // 1. We prepare offsets for all data in the oat file and calculate 1294 // the oat data size and code size. During this stage, we also set 1295 // oat code offsets in methods for use by the image writer. 1296 // 1297 // 2. We prepare offsets for the objects in the image and calculate 1298 // the image size. 1299 // 1300 // 3. We create the oat file. Originally this was just our own proprietary 1301 // file but now it is contained within an ELF dynamic object (aka an .so 1302 // file). Since we know the image size and oat data size and code size we 1303 // can prepare the ELF headers and we then know the ELF memory segment 1304 // layout and we can now resolve all references. The compiler provides 1305 // LinkerPatch information in each CompiledMethod and we resolve these, 1306 // using the layout information and image object locations provided by 1307 // image writer, as we're writing the method code. 1308 // 1309 // 4. We create the image file. It needs to know where the oat file 1310 // will be loaded after itself. Originally when oat file was simply 1311 // memory mapped so we could predict where its contents were based 1312 // on the file size. Now that it is an ELF file, we need to inspect 1313 // the ELF file to understand the in memory segment layout including 1314 // where the oat header is located within. 1315 // TODO: We could just remember this information from step 3. 1316 // 1317 // 5. We fixup the ELF program headers so that dlopen will try to 1318 // load the .so at the desired location at runtime by offsetting the 1319 // Elf32_Phdr.p_vaddr values by the desired base address. 1320 // TODO: Do this in step 3. We already know the layout there. 1321 // 1322 // Steps 1.-3. are done by the CreateOatFile() above, steps 4.-5. 1323 // are done by the CreateImageFile() below. 1324 1325 1326 // Write out the generated code part. Calls the OatWriter and ElfBuilder. Also prepares the 1327 // ImageWriter, if necessary. 1328 // Note: Flushing (and closing) the file is the caller's responsibility, except for the failure 1329 // case (when the file will be explicitly erased). 1330 bool CreateOatFile() { 1331 CHECK(key_value_store_.get() != nullptr); 1332 1333 TimingLogger::ScopedTiming t("dex2oat Oat", timings_); 1334 1335 std::unique_ptr<OatWriter> oat_writer; 1336 { 1337 TimingLogger::ScopedTiming t2("dex2oat OatWriter", timings_); 1338 std::string image_file_location; 1339 uint32_t image_file_location_oat_checksum = 0; 1340 uintptr_t image_file_location_oat_data_begin = 0; 1341 int32_t image_patch_delta = 0; 1342 if (image_) { 1343 PrepareImageWriter(image_base_); 1344 } else { 1345 TimingLogger::ScopedTiming t3("Loading image checksum", timings_); 1346 gc::space::ImageSpace* image_space = Runtime::Current()->GetHeap()->GetImageSpace(); 1347 image_file_location_oat_checksum = image_space->GetImageHeader().GetOatChecksum(); 1348 image_file_location_oat_data_begin = 1349 reinterpret_cast<uintptr_t>(image_space->GetImageHeader().GetOatDataBegin()); 1350 image_file_location = image_space->GetImageFilename(); 1351 image_patch_delta = image_space->GetImageHeader().GetPatchDelta(); 1352 } 1353 1354 if (!image_file_location.empty()) { 1355 key_value_store_->Put(OatHeader::kImageLocationKey, image_file_location); 1356 } 1357 1358 oat_writer.reset(new OatWriter(dex_files_, image_file_location_oat_checksum, 1359 image_file_location_oat_data_begin, 1360 image_patch_delta, 1361 driver_.get(), 1362 image_writer_.get(), 1363 timings_, 1364 key_value_store_.get())); 1365 } 1366 1367 if (image_) { 1368 // The OatWriter constructor has already updated offsets in methods and we need to 1369 // prepare method offsets in the image address space for direct method patching. 1370 TimingLogger::ScopedTiming t2("dex2oat Prepare image address space", timings_); 1371 if (!image_writer_->PrepareImageAddressSpace()) { 1372 LOG(ERROR) << "Failed to prepare image address space."; 1373 return false; 1374 } 1375 } 1376 1377 { 1378 TimingLogger::ScopedTiming t2("dex2oat Write ELF", timings_); 1379 if (!driver_->WriteElf(android_root_, is_host_, dex_files_, oat_writer.get(), 1380 oat_file_.get())) { 1381 LOG(ERROR) << "Failed to write ELF file " << oat_file_->GetPath(); 1382 return false; 1383 } 1384 } 1385 1386 VLOG(compiler) << "Oat file written successfully (unstripped): " << oat_location_; 1387 return true; 1388 } 1389 1390 // If we are compiling an image, invoke the image creation routine. Else just skip. 1391 bool HandleImage() { 1392 if (image_) { 1393 TimingLogger::ScopedTiming t("dex2oat ImageWriter", timings_); 1394 if (!CreateImageFile()) { 1395 return false; 1396 } 1397 VLOG(compiler) << "Image written successfully: " << image_filename_; 1398 } 1399 return true; 1400 } 1401 1402 // Create a copy from unstripped to stripped. 1403 bool CopyUnstrippedToStripped() { 1404 // If we don't want to strip in place, copy from unstripped location to stripped location. 1405 // We need to strip after image creation because FixupElf needs to use .strtab. 1406 if (oat_unstripped_ != oat_stripped_) { 1407 // If the oat file is still open, flush it. 1408 if (oat_file_.get() != nullptr && oat_file_->IsOpened()) { 1409 if (!FlushCloseOatFile()) { 1410 return false; 1411 } 1412 } 1413 1414 TimingLogger::ScopedTiming t("dex2oat OatFile copy", timings_); 1415 std::unique_ptr<File> in(OS::OpenFileForReading(oat_unstripped_.c_str())); 1416 std::unique_ptr<File> out(OS::CreateEmptyFile(oat_stripped_.c_str())); 1417 size_t buffer_size = 8192; 1418 std::unique_ptr<uint8_t[]> buffer(new uint8_t[buffer_size]); 1419 while (true) { 1420 int bytes_read = TEMP_FAILURE_RETRY(read(in->Fd(), buffer.get(), buffer_size)); 1421 if (bytes_read <= 0) { 1422 break; 1423 } 1424 bool write_ok = out->WriteFully(buffer.get(), bytes_read); 1425 CHECK(write_ok); 1426 } 1427 if (out->FlushCloseOrErase() != 0) { 1428 PLOG(ERROR) << "Failed to flush and close copied oat file: " << oat_stripped_; 1429 return false; 1430 } 1431 VLOG(compiler) << "Oat file copied successfully (stripped): " << oat_stripped_; 1432 } 1433 return true; 1434 } 1435 1436 bool FlushOatFile() { 1437 if (oat_file_.get() != nullptr) { 1438 TimingLogger::ScopedTiming t2("dex2oat Flush ELF", timings_); 1439 if (oat_file_->Flush() != 0) { 1440 PLOG(ERROR) << "Failed to flush oat file: " << oat_location_ << " / " 1441 << oat_filename_; 1442 oat_file_->Erase(); 1443 return false; 1444 } 1445 } 1446 return true; 1447 } 1448 1449 bool FlushCloseOatFile() { 1450 if (oat_file_.get() != nullptr) { 1451 std::unique_ptr<File> tmp(oat_file_.release()); 1452 if (tmp->FlushCloseOrErase() != 0) { 1453 PLOG(ERROR) << "Failed to flush and close oat file: " << oat_location_ << " / " 1454 << oat_filename_; 1455 return false; 1456 } 1457 } 1458 return true; 1459 } 1460 1461 void DumpTiming() { 1462 if (dump_timing_ || (dump_slow_timing_ && timings_->GetTotalNs() > MsToNs(1000))) { 1463 LOG(INFO) << Dumpable<TimingLogger>(*timings_); 1464 } 1465 if (dump_passes_) { 1466 LOG(INFO) << Dumpable<CumulativeLogger>(*driver_->GetTimingsLogger()); 1467 } 1468 } 1469 1470 CompilerOptions* GetCompilerOptions() const { 1471 return compiler_options_.get(); 1472 } 1473 1474 bool IsImage() const { 1475 return image_; 1476 } 1477 1478 bool IsHost() const { 1479 return is_host_; 1480 } 1481 1482 private: 1483 static size_t OpenDexFiles(const std::vector<const char*>& dex_filenames, 1484 const std::vector<const char*>& dex_locations, 1485 std::vector<std::unique_ptr<const DexFile>>* dex_files) { 1486 DCHECK(dex_files != nullptr) << "OpenDexFiles out-param is NULL"; 1487 size_t failure_count = 0; 1488 for (size_t i = 0; i < dex_filenames.size(); i++) { 1489 const char* dex_filename = dex_filenames[i]; 1490 const char* dex_location = dex_locations[i]; 1491 ATRACE_BEGIN(StringPrintf("Opening dex file '%s'", dex_filenames[i]).c_str()); 1492 std::string error_msg; 1493 if (!OS::FileExists(dex_filename)) { 1494 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 1495 continue; 1496 } 1497 if (!DexFile::Open(dex_filename, dex_location, &error_msg, dex_files)) { 1498 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 1499 ++failure_count; 1500 } 1501 ATRACE_END(); 1502 } 1503 return failure_count; 1504 } 1505 1506 // Returns true if dex_files has a dex with the named location. 1507 static bool DexFilesContains(const std::vector<const DexFile*>& dex_files, 1508 const std::string& location) { 1509 for (size_t i = 0; i < dex_files.size(); ++i) { 1510 if (dex_files[i]->GetLocation() == location) { 1511 return true; 1512 } 1513 } 1514 return false; 1515 } 1516 1517 // Appends to opened_dex_files any elements of class_path that dex_files 1518 // doesn't already contain. This will open those dex files as necessary. 1519 static void OpenClassPathFiles(const std::string& class_path, 1520 std::vector<const DexFile*> dex_files, 1521 std::vector<std::unique_ptr<const DexFile>>* opened_dex_files) { 1522 DCHECK(opened_dex_files != nullptr) << "OpenClassPathFiles out-param is NULL"; 1523 std::vector<std::string> parsed; 1524 Split(class_path, ':', &parsed); 1525 // Take Locks::mutator_lock_ so that lock ordering on the ClassLinker::dex_lock_ is maintained. 1526 ScopedObjectAccess soa(Thread::Current()); 1527 for (size_t i = 0; i < parsed.size(); ++i) { 1528 if (DexFilesContains(dex_files, parsed[i])) { 1529 continue; 1530 } 1531 std::string error_msg; 1532 if (!DexFile::Open(parsed[i].c_str(), parsed[i].c_str(), &error_msg, opened_dex_files)) { 1533 LOG(WARNING) << "Failed to open dex file '" << parsed[i] << "': " << error_msg; 1534 } 1535 } 1536 } 1537 1538 // Create a runtime necessary for compilation. 1539 bool CreateRuntime(const RuntimeOptions& runtime_options) 1540 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_) { 1541 if (!Runtime::Create(runtime_options, false)) { 1542 LOG(ERROR) << "Failed to create runtime"; 1543 return false; 1544 } 1545 Runtime* runtime = Runtime::Current(); 1546 runtime->SetInstructionSet(instruction_set_); 1547 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 1548 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 1549 if (!runtime->HasCalleeSaveMethod(type)) { 1550 runtime->SetCalleeSaveMethod(runtime->CreateCalleeSaveMethod(), type); 1551 } 1552 } 1553 runtime->GetClassLinker()->FixupDexCaches(runtime->GetResolutionMethod()); 1554 1555 // Initialize maps for unstarted runtime. This needs to be here, as running clinits needs this 1556 // set up. 1557 interpreter::UnstartedRuntimeInitialize(); 1558 1559 runtime->GetClassLinker()->RunRootClinits(); 1560 runtime_ = runtime; 1561 1562 return true; 1563 } 1564 1565 void PrepareImageWriter(uintptr_t image_base) { 1566 image_writer_.reset(new ImageWriter(*driver_, image_base, compiler_options_->GetCompilePic())); 1567 } 1568 1569 // Let the ImageWriter write the image file. If we do not compile PIC, also fix up the oat file. 1570 bool CreateImageFile() 1571 LOCKS_EXCLUDED(Locks::mutator_lock_) { 1572 CHECK(image_writer_ != nullptr); 1573 if (!image_writer_->Write(image_filename_, oat_unstripped_, oat_location_)) { 1574 LOG(ERROR) << "Failed to create image file " << image_filename_; 1575 return false; 1576 } 1577 uintptr_t oat_data_begin = image_writer_->GetOatDataBegin(); 1578 1579 // Destroy ImageWriter before doing FixupElf. 1580 image_writer_.reset(); 1581 1582 // Do not fix up the ELF file if we are --compile-pic 1583 if (!compiler_options_->GetCompilePic()) { 1584 std::unique_ptr<File> oat_file(OS::OpenFileReadWrite(oat_unstripped_.c_str())); 1585 if (oat_file.get() == nullptr) { 1586 PLOG(ERROR) << "Failed to open ELF file: " << oat_unstripped_; 1587 return false; 1588 } 1589 1590 if (!ElfWriter::Fixup(oat_file.get(), oat_data_begin)) { 1591 oat_file->Erase(); 1592 LOG(ERROR) << "Failed to fixup ELF file " << oat_file->GetPath(); 1593 return false; 1594 } 1595 1596 if (oat_file->FlushCloseOrErase()) { 1597 PLOG(ERROR) << "Failed to flush and close fixed ELF file " << oat_file->GetPath(); 1598 return false; 1599 } 1600 } 1601 1602 return true; 1603 } 1604 1605 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 1606 static std::set<std::string>* ReadImageClassesFromFile(const char* image_classes_filename) { 1607 std::unique_ptr<std::ifstream> image_classes_file(new std::ifstream(image_classes_filename, 1608 std::ifstream::in)); 1609 if (image_classes_file.get() == nullptr) { 1610 LOG(ERROR) << "Failed to open image classes file " << image_classes_filename; 1611 return nullptr; 1612 } 1613 std::unique_ptr<std::set<std::string>> result(ReadImageClasses(*image_classes_file)); 1614 image_classes_file->close(); 1615 return result.release(); 1616 } 1617 1618 static std::set<std::string>* ReadImageClasses(std::istream& image_classes_stream) { 1619 std::unique_ptr<std::set<std::string>> image_classes(new std::set<std::string>); 1620 while (image_classes_stream.good()) { 1621 std::string dot; 1622 std::getline(image_classes_stream, dot); 1623 if (StartsWith(dot, "#") || dot.empty()) { 1624 continue; 1625 } 1626 std::string descriptor(DotToDescriptor(dot.c_str())); 1627 image_classes->insert(descriptor); 1628 } 1629 return image_classes.release(); 1630 } 1631 1632 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 1633 static std::set<std::string>* ReadImageClassesFromZip(const char* zip_filename, 1634 const char* image_classes_filename, 1635 std::string* error_msg) { 1636 std::unique_ptr<ZipArchive> zip_archive(ZipArchive::Open(zip_filename, error_msg)); 1637 if (zip_archive.get() == nullptr) { 1638 return nullptr; 1639 } 1640 std::unique_ptr<ZipEntry> zip_entry(zip_archive->Find(image_classes_filename, error_msg)); 1641 if (zip_entry.get() == nullptr) { 1642 *error_msg = StringPrintf("Failed to find '%s' within '%s': %s", image_classes_filename, 1643 zip_filename, error_msg->c_str()); 1644 return nullptr; 1645 } 1646 std::unique_ptr<MemMap> image_classes_file(zip_entry->ExtractToMemMap(zip_filename, 1647 image_classes_filename, 1648 error_msg)); 1649 if (image_classes_file.get() == nullptr) { 1650 *error_msg = StringPrintf("Failed to extract '%s' from '%s': %s", image_classes_filename, 1651 zip_filename, error_msg->c_str()); 1652 return nullptr; 1653 } 1654 const std::string image_classes_string(reinterpret_cast<char*>(image_classes_file->Begin()), 1655 image_classes_file->Size()); 1656 std::istringstream image_classes_stream(image_classes_string); 1657 return ReadImageClasses(image_classes_stream); 1658 } 1659 1660 void LogCompletionTime() { 1661 // Note: when creation of a runtime fails, e.g., when trying to compile an app but when there 1662 // is no image, there won't be a Runtime::Current(). 1663 // Note: driver creation can fail when loading an invalid dex file. 1664 LOG(INFO) << "dex2oat took " << PrettyDuration(NanoTime() - start_ns_) 1665 << " (threads: " << thread_count_ << ") " 1666 << ((Runtime::Current() != nullptr && driver_.get() != nullptr) ? 1667 driver_->GetMemoryUsageString(kIsDebugBuild || VLOG_IS_ON(compiler)) : 1668 ""); 1669 } 1670 1671 std::unique_ptr<CompilerOptions> compiler_options_; 1672 Compiler::Kind compiler_kind_; 1673 1674 InstructionSet instruction_set_; 1675 std::unique_ptr<const InstructionSetFeatures> instruction_set_features_; 1676 1677 std::unique_ptr<SafeMap<std::string, std::string> > key_value_store_; 1678 1679 std::unique_ptr<VerificationResults> verification_results_; 1680 DexFileToMethodInlinerMap method_inliner_map_; 1681 std::unique_ptr<QuickCompilerCallbacks> callbacks_; 1682 1683 // Ownership for the class path files. 1684 std::vector<std::unique_ptr<const DexFile>> class_path_files_; 1685 1686 // Not a unique_ptr as we want to just exit on non-debug builds, not bringing the runtime down 1687 // in an orderly fashion. The destructor takes care of deleting this. 1688 Runtime* runtime_; 1689 1690 size_t thread_count_; 1691 uint64_t start_ns_; 1692 std::unique_ptr<WatchDog> watchdog_; 1693 std::unique_ptr<File> oat_file_; 1694 std::string oat_stripped_; 1695 std::string oat_unstripped_; 1696 std::string oat_location_; 1697 std::string oat_filename_; 1698 int oat_fd_; 1699 std::vector<const char*> dex_filenames_; 1700 std::vector<const char*> dex_locations_; 1701 int zip_fd_; 1702 std::string zip_location_; 1703 std::string boot_image_option_; 1704 std::vector<const char*> runtime_args_; 1705 std::string image_filename_; 1706 uintptr_t image_base_; 1707 const char* image_classes_zip_filename_; 1708 const char* image_classes_filename_; 1709 const char* compiled_classes_zip_filename_; 1710 const char* compiled_classes_filename_; 1711 std::unique_ptr<std::set<std::string>> image_classes_; 1712 std::unique_ptr<std::set<std::string>> compiled_classes_; 1713 bool image_; 1714 std::unique_ptr<ImageWriter> image_writer_; 1715 bool is_host_; 1716 std::string android_root_; 1717 std::vector<const DexFile*> dex_files_; 1718 std::vector<std::unique_ptr<const DexFile>> opened_dex_files_; 1719 std::unique_ptr<CompilerDriver> driver_; 1720 std::vector<std::string> verbose_methods_; 1721 bool dump_stats_; 1722 bool dump_passes_; 1723 bool dump_timing_; 1724 bool dump_slow_timing_; 1725 std::string dump_cfg_file_name_; 1726 std::string swap_file_name_; 1727 int swap_fd_; 1728 std::string profile_file_; // Profile file to use 1729 TimingLogger* timings_; 1730 std::unique_ptr<CumulativeLogger> compiler_phases_timings_; 1731 std::unique_ptr<std::ostream> init_failure_output_; 1732 1733 DISALLOW_IMPLICIT_CONSTRUCTORS(Dex2Oat); 1734}; 1735 1736const unsigned int WatchDog::kWatchDogTimeoutSeconds; 1737 1738static void b13564922() { 1739#if defined(__linux__) && defined(__arm__) 1740 int major, minor; 1741 struct utsname uts; 1742 if (uname(&uts) != -1 && 1743 sscanf(uts.release, "%d.%d", &major, &minor) == 2 && 1744 ((major < 3) || ((major == 3) && (minor < 4)))) { 1745 // Kernels before 3.4 don't handle the ASLR well and we can run out of address 1746 // space (http://b/13564922). Work around the issue by inhibiting further mmap() randomization. 1747 int old_personality = personality(0xffffffff); 1748 if ((old_personality & ADDR_NO_RANDOMIZE) == 0) { 1749 int new_personality = personality(old_personality | ADDR_NO_RANDOMIZE); 1750 if (new_personality == -1) { 1751 LOG(WARNING) << "personality(. | ADDR_NO_RANDOMIZE) failed."; 1752 } 1753 } 1754 } 1755#endif 1756} 1757 1758static int CompileImage(Dex2Oat& dex2oat) { 1759 dex2oat.Compile(); 1760 1761 // Create the boot.oat. 1762 if (!dex2oat.CreateOatFile()) { 1763 dex2oat.EraseOatFile(); 1764 return EXIT_FAILURE; 1765 } 1766 1767 // Flush and close the boot.oat. We always expect the output file by name, and it will be 1768 // re-opened from the unstripped name. 1769 if (!dex2oat.FlushCloseOatFile()) { 1770 return EXIT_FAILURE; 1771 } 1772 1773 // Creates the boot.art and patches the boot.oat. 1774 if (!dex2oat.HandleImage()) { 1775 return EXIT_FAILURE; 1776 } 1777 1778 // When given --host, finish early without stripping. 1779 if (dex2oat.IsHost()) { 1780 dex2oat.DumpTiming(); 1781 return EXIT_SUCCESS; 1782 } 1783 1784 // Copy unstripped to stripped location, if necessary. 1785 if (!dex2oat.CopyUnstrippedToStripped()) { 1786 return EXIT_FAILURE; 1787 } 1788 1789 // FlushClose again, as stripping might have re-opened the oat file. 1790 if (!dex2oat.FlushCloseOatFile()) { 1791 return EXIT_FAILURE; 1792 } 1793 1794 dex2oat.DumpTiming(); 1795 return EXIT_SUCCESS; 1796} 1797 1798static int CompileApp(Dex2Oat& dex2oat) { 1799 dex2oat.Compile(); 1800 1801 // Create the app oat. 1802 if (!dex2oat.CreateOatFile()) { 1803 dex2oat.EraseOatFile(); 1804 return EXIT_FAILURE; 1805 } 1806 1807 // Do not close the oat file here. We might haven gotten the output file by file descriptor, 1808 // which we would lose. 1809 if (!dex2oat.FlushOatFile()) { 1810 return EXIT_FAILURE; 1811 } 1812 1813 // When given --host, finish early without stripping. 1814 if (dex2oat.IsHost()) { 1815 if (!dex2oat.FlushCloseOatFile()) { 1816 return EXIT_FAILURE; 1817 } 1818 1819 dex2oat.DumpTiming(); 1820 return EXIT_SUCCESS; 1821 } 1822 1823 // Copy unstripped to stripped location, if necessary. This will implicitly flush & close the 1824 // unstripped version. If this is given, we expect to be able to open writable files by name. 1825 if (!dex2oat.CopyUnstrippedToStripped()) { 1826 return EXIT_FAILURE; 1827 } 1828 1829 // Flush and close the file. 1830 if (!dex2oat.FlushCloseOatFile()) { 1831 return EXIT_FAILURE; 1832 } 1833 1834 dex2oat.DumpTiming(); 1835 return EXIT_SUCCESS; 1836} 1837 1838static int dex2oat(int argc, char** argv) { 1839 b13564922(); 1840 1841 TimingLogger timings("compiler", false, false); 1842 1843 Dex2Oat dex2oat(&timings); 1844 1845 // Parse arguments. Argument mistakes will lead to exit(EXIT_FAILURE) in UsageError. 1846 dex2oat.ParseArgs(argc, argv); 1847 1848 // Check early that the result of compilation can be written 1849 if (!dex2oat.OpenFile()) { 1850 return EXIT_FAILURE; 1851 } 1852 1853 LOG(INFO) << CommandLine(); 1854 1855 if (!dex2oat.Setup()) { 1856 dex2oat.EraseOatFile(); 1857 return EXIT_FAILURE; 1858 } 1859 1860 if (dex2oat.IsImage()) { 1861 return CompileImage(dex2oat); 1862 } else { 1863 return CompileApp(dex2oat); 1864 } 1865} 1866} // namespace art 1867 1868int main(int argc, char** argv) { 1869 int result = art::dex2oat(argc, argv); 1870 // Everything was done, do an explicit exit here to avoid running Runtime destructors that take 1871 // time (bug 10645725) unless we're a debug build or running on valgrind. Note: The Dex2Oat class 1872 // should not destruct the runtime in this case. 1873 if (!art::kIsDebugBuild && (RUNNING_ON_VALGRIND == 0)) { 1874 exit(result); 1875 } 1876 return result; 1877} 1878