dex2oat.cc revision af58780a2ed000581bf93fa2b018bfb081e61f00
1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include <stdio.h> 18#include <stdlib.h> 19#include <sys/stat.h> 20#include <valgrind.h> 21 22#include <fstream> 23#include <iostream> 24#include <sstream> 25#include <string> 26#include <vector> 27 28#if defined(__linux__) && defined(__arm__) 29#include <sys/personality.h> 30#include <sys/utsname.h> 31#endif 32 33#define ATRACE_TAG ATRACE_TAG_DALVIK 34#include <cutils/trace.h> 35 36#include "arch/instruction_set_features.h" 37#include "arch/mips/instruction_set_features_mips.h" 38#include "base/dumpable.h" 39#include "base/macros.h" 40#include "base/stl_util.h" 41#include "base/stringpiece.h" 42#include "base/timing_logger.h" 43#include "base/unix_file/fd_file.h" 44#include "class_linker.h" 45#include "compiler.h" 46#include "compiler_callbacks.h" 47#include "dex_file-inl.h" 48#include "dex/pass_manager.h" 49#include "dex/verification_results.h" 50#include "dex/quick_compiler_callbacks.h" 51#include "dex/quick/dex_file_to_method_inliner_map.h" 52#include "driver/compiler_driver.h" 53#include "driver/compiler_options.h" 54#include "elf_file.h" 55#include "elf_writer.h" 56#include "gc/space/image_space.h" 57#include "gc/space/space-inl.h" 58#include "image_writer.h" 59#include "leb128.h" 60#include "mirror/art_method-inl.h" 61#include "mirror/class-inl.h" 62#include "mirror/class_loader.h" 63#include "mirror/object-inl.h" 64#include "mirror/object_array-inl.h" 65#include "oat_writer.h" 66#include "os.h" 67#include "runtime.h" 68#include "ScopedLocalRef.h" 69#include "scoped_thread_state_change.h" 70#include "utils.h" 71#include "vector_output_stream.h" 72#include "well_known_classes.h" 73#include "zip_archive.h" 74 75namespace art { 76 77static int original_argc; 78static char** original_argv; 79 80static std::string CommandLine() { 81 std::vector<std::string> command; 82 for (int i = 0; i < original_argc; ++i) { 83 command.push_back(original_argv[i]); 84 } 85 return Join(command, ' '); 86} 87 88static void UsageErrorV(const char* fmt, va_list ap) { 89 std::string error; 90 StringAppendV(&error, fmt, ap); 91 LOG(ERROR) << error; 92} 93 94static void UsageError(const char* fmt, ...) { 95 va_list ap; 96 va_start(ap, fmt); 97 UsageErrorV(fmt, ap); 98 va_end(ap); 99} 100 101NO_RETURN static void Usage(const char* fmt, ...) { 102 va_list ap; 103 va_start(ap, fmt); 104 UsageErrorV(fmt, ap); 105 va_end(ap); 106 107 UsageError("Command: %s", CommandLine().c_str()); 108 109 UsageError("Usage: dex2oat [options]..."); 110 UsageError(""); 111 UsageError(" --dex-file=<dex-file>: specifies a .dex file to compile."); 112 UsageError(" Example: --dex-file=/system/framework/core.jar"); 113 UsageError(""); 114 UsageError(" --zip-fd=<file-descriptor>: specifies a file descriptor of a zip file"); 115 UsageError(" containing a classes.dex file to compile."); 116 UsageError(" Example: --zip-fd=5"); 117 UsageError(""); 118 UsageError(" --zip-location=<zip-location>: specifies a symbolic name for the file"); 119 UsageError(" corresponding to the file descriptor specified by --zip-fd."); 120 UsageError(" Example: --zip-location=/system/app/Calculator.apk"); 121 UsageError(""); 122 UsageError(" --oat-file=<file.oat>: specifies the oat output destination via a filename."); 123 UsageError(" Example: --oat-file=/system/framework/boot.oat"); 124 UsageError(""); 125 UsageError(" --oat-fd=<number>: specifies the oat output destination via a file descriptor."); 126 UsageError(" Example: --oat-fd=6"); 127 UsageError(""); 128 UsageError(" --oat-location=<oat-name>: specifies a symbolic name for the file corresponding"); 129 UsageError(" to the file descriptor specified by --oat-fd."); 130 UsageError(" Example: --oat-location=/data/dalvik-cache/system@app@Calculator.apk.oat"); 131 UsageError(""); 132 UsageError(" --oat-symbols=<file.oat>: specifies the oat output destination with full symbols."); 133 UsageError(" Example: --oat-symbols=/symbols/system/framework/boot.oat"); 134 UsageError(""); 135 UsageError(" --image=<file.art>: specifies the output image filename."); 136 UsageError(" Example: --image=/system/framework/boot.art"); 137 UsageError(""); 138 UsageError(" --image-classes=<classname-file>: specifies classes to include in an image."); 139 UsageError(" Example: --image=frameworks/base/preloaded-classes"); 140 UsageError(""); 141 UsageError(" --base=<hex-address>: specifies the base address when creating a boot image."); 142 UsageError(" Example: --base=0x50000000"); 143 UsageError(""); 144 UsageError(" --boot-image=<file.art>: provide the image file for the boot class path."); 145 UsageError(" Example: --boot-image=/system/framework/boot.art"); 146 UsageError(" Default: $ANDROID_ROOT/system/framework/boot.art"); 147 UsageError(""); 148 UsageError(" --android-root=<path>: used to locate libraries for portable linking."); 149 UsageError(" Example: --android-root=out/host/linux-x86"); 150 UsageError(" Default: $ANDROID_ROOT"); 151 UsageError(""); 152 UsageError(" --instruction-set=(arm|arm64|mips|mips64|x86|x86_64): compile for a particular"); 153 UsageError(" instruction set."); 154 UsageError(" Example: --instruction-set=x86"); 155 UsageError(" Default: arm"); 156 UsageError(""); 157 UsageError(" --instruction-set-features=...,: Specify instruction set features"); 158 UsageError(" Example: --instruction-set-features=div"); 159 UsageError(" Default: default"); 160 UsageError(""); 161 UsageError(" --compile-pic: Force indirect use of code, methods, and classes"); 162 UsageError(" Default: disabled"); 163 UsageError(""); 164 UsageError(" --compiler-backend=(Quick|Optimizing): select compiler backend"); 165 UsageError(" set."); 166 UsageError(" Example: --compiler-backend=Optimizing"); 167 if (kUseOptimizingCompiler) { 168 UsageError(" Default: Optimizing"); 169 } else { 170 UsageError(" Default: Quick"); 171 } 172 UsageError(""); 173 UsageError(" --compiler-filter=" 174 "(verify-none" 175 "|interpret-only" 176 "|space" 177 "|balanced" 178 "|speed" 179 "|everything" 180 "|time):"); 181 UsageError(" select compiler filter."); 182 UsageError(" Example: --compiler-filter=everything"); 183 UsageError(" Default: speed"); 184 UsageError(""); 185 UsageError(" --huge-method-max=<method-instruction-count>: threshold size for a huge"); 186 UsageError(" method for compiler filter tuning."); 187 UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold); 188 UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold); 189 UsageError(""); 190 UsageError(" --large-method-max=<method-instruction-count>: threshold size for a large"); 191 UsageError(" method for compiler filter tuning."); 192 UsageError(" Example: --large-method-max=%d", CompilerOptions::kDefaultLargeMethodThreshold); 193 UsageError(" Default: %d", CompilerOptions::kDefaultLargeMethodThreshold); 194 UsageError(""); 195 UsageError(" --small-method-max=<method-instruction-count>: threshold size for a small"); 196 UsageError(" method for compiler filter tuning."); 197 UsageError(" Example: --small-method-max=%d", CompilerOptions::kDefaultSmallMethodThreshold); 198 UsageError(" Default: %d", CompilerOptions::kDefaultSmallMethodThreshold); 199 UsageError(""); 200 UsageError(" --tiny-method-max=<method-instruction-count>: threshold size for a tiny"); 201 UsageError(" method for compiler filter tuning."); 202 UsageError(" Example: --tiny-method-max=%d", CompilerOptions::kDefaultTinyMethodThreshold); 203 UsageError(" Default: %d", CompilerOptions::kDefaultTinyMethodThreshold); 204 UsageError(""); 205 UsageError(" --num-dex-methods=<method-count>: threshold size for a small dex file for"); 206 UsageError(" compiler filter tuning. If the input has fewer than this many methods"); 207 UsageError(" and the filter is not interpret-only or verify-none, overrides the"); 208 UsageError(" filter to use speed"); 209 UsageError(" Example: --num-dex-method=%d", CompilerOptions::kDefaultNumDexMethodsThreshold); 210 UsageError(" Default: %d", CompilerOptions::kDefaultNumDexMethodsThreshold); 211 UsageError(""); 212 UsageError(" --dump-timing: display a breakdown of where time was spent"); 213 UsageError(""); 214 UsageError(" --include-patch-information: Include patching information so the generated code"); 215 UsageError(" can have its base address moved without full recompilation."); 216 UsageError(""); 217 UsageError(" --no-include-patch-information: Do not include patching information."); 218 UsageError(""); 219 UsageError(" --include-debug-symbols: Include ELF symbols in this oat file"); 220 UsageError(""); 221 UsageError(" --no-include-debug-symbols: Do not include ELF symbols in this oat file"); 222 UsageError(""); 223 UsageError(" --runtime-arg <argument>: used to specify various arguments for the runtime,"); 224 UsageError(" such as initial heap size, maximum heap size, and verbose output."); 225 UsageError(" Use a separate --runtime-arg switch for each argument."); 226 UsageError(" Example: --runtime-arg -Xms256m"); 227 UsageError(""); 228 UsageError(" --profile-file=<filename>: specify profiler output file to use for compilation."); 229 UsageError(""); 230 UsageError(" --print-pass-names: print a list of pass names"); 231 UsageError(""); 232 UsageError(" --disable-passes=<pass-names>: disable one or more passes separated by comma."); 233 UsageError(" Example: --disable-passes=UseCount,BBOptimizations"); 234 UsageError(""); 235 UsageError(" --print-pass-options: print a list of passes that have configurable options along " 236 "with the setting."); 237 UsageError(" Will print default if no overridden setting exists."); 238 UsageError(""); 239 UsageError(" --pass-options=Pass1Name:Pass1OptionName:Pass1Option#," 240 "Pass2Name:Pass2OptionName:Pass2Option#"); 241 UsageError(" Used to specify a pass specific option. The setting itself must be integer."); 242 UsageError(" Separator used between options is a comma."); 243 UsageError(""); 244 UsageError(" --swap-file=<file-name>: specifies a file to use for swap."); 245 UsageError(" Example: --swap-file=/data/tmp/swap.001"); 246 UsageError(""); 247 UsageError(" --swap-fd=<file-descriptor>: specifies a file to use for swap (by descriptor)."); 248 UsageError(" Example: --swap-fd=10"); 249 UsageError(""); 250 std::cerr << "See log for usage error information\n"; 251 exit(EXIT_FAILURE); 252} 253 254// The primary goal of the watchdog is to prevent stuck build servers 255// during development when fatal aborts lead to a cascade of failures 256// that result in a deadlock. 257class WatchDog { 258// WatchDog defines its own CHECK_PTHREAD_CALL to avoid using LOG which uses locks 259#undef CHECK_PTHREAD_CALL 260#define CHECK_WATCH_DOG_PTHREAD_CALL(call, args, what) \ 261 do { \ 262 int rc = call args; \ 263 if (rc != 0) { \ 264 errno = rc; \ 265 std::string message(# call); \ 266 message += " failed for "; \ 267 message += reason; \ 268 Fatal(message); \ 269 } \ 270 } while (false) 271 272 public: 273 explicit WatchDog(bool is_watch_dog_enabled) { 274 is_watch_dog_enabled_ = is_watch_dog_enabled; 275 if (!is_watch_dog_enabled_) { 276 return; 277 } 278 shutting_down_ = false; 279 const char* reason = "dex2oat watch dog thread startup"; 280 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_init, (&mutex_, nullptr), reason); 281 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_init, (&cond_, nullptr), reason); 282 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_init, (&attr_), reason); 283 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_create, (&pthread_, &attr_, &CallBack, this), reason); 284 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_destroy, (&attr_), reason); 285 } 286 ~WatchDog() { 287 if (!is_watch_dog_enabled_) { 288 return; 289 } 290 const char* reason = "dex2oat watch dog thread shutdown"; 291 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 292 shutting_down_ = true; 293 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_signal, (&cond_), reason); 294 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 295 296 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_join, (pthread_, nullptr), reason); 297 298 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_destroy, (&cond_), reason); 299 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_destroy, (&mutex_), reason); 300 } 301 302 private: 303 static void* CallBack(void* arg) { 304 WatchDog* self = reinterpret_cast<WatchDog*>(arg); 305 ::art::SetThreadName("dex2oat watch dog"); 306 self->Wait(); 307 return nullptr; 308 } 309 310 static void Message(char severity, const std::string& message) { 311 // TODO: Remove when we switch to LOG when we can guarantee it won't prevent shutdown in error 312 // cases. 313 fprintf(stderr, "dex2oat%s %c %d %d %s\n", 314 kIsDebugBuild ? "d" : "", 315 severity, 316 getpid(), 317 GetTid(), 318 message.c_str()); 319 } 320 321 NO_RETURN static void Fatal(const std::string& message) { 322 Message('F', message); 323 exit(1); 324 } 325 326 void Wait() { 327 // TODO: tune the multiplier for GC verification, the following is just to make the timeout 328 // large. 329 int64_t multiplier = kVerifyObjectSupport > kVerifyObjectModeFast ? 100 : 1; 330 timespec timeout_ts; 331 InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogTimeoutSeconds * 1000, 0, &timeout_ts); 332 const char* reason = "dex2oat watch dog thread waiting"; 333 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 334 while (!shutting_down_) { 335 int rc = TEMP_FAILURE_RETRY(pthread_cond_timedwait(&cond_, &mutex_, &timeout_ts)); 336 if (rc == ETIMEDOUT) { 337 Fatal(StringPrintf("dex2oat did not finish after %d seconds", kWatchDogTimeoutSeconds)); 338 } else if (rc != 0) { 339 std::string message(StringPrintf("pthread_cond_timedwait failed: %s", 340 strerror(errno))); 341 Fatal(message.c_str()); 342 } 343 } 344 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 345 } 346 347 // When setting timeouts, keep in mind that the build server may not be as fast as your desktop. 348 // Debug builds are slower so they have larger timeouts. 349 static const unsigned int kSlowdownFactor = kIsDebugBuild ? 5U : 1U; 350 351 // 6 minutes scaled by kSlowdownFactor. 352 static const unsigned int kWatchDogTimeoutSeconds = kSlowdownFactor * 6 * 60; 353 354 bool is_watch_dog_enabled_; 355 bool shutting_down_; 356 // TODO: Switch to Mutex when we can guarantee it won't prevent shutdown in error cases. 357 pthread_mutex_t mutex_; 358 pthread_cond_t cond_; 359 pthread_attr_t attr_; 360 pthread_t pthread_; 361}; 362 363static void ParseStringAfterChar(const std::string& s, char c, std::string* parsed_value) { 364 std::string::size_type colon = s.find(c); 365 if (colon == std::string::npos) { 366 Usage("Missing char %c in option %s\n", c, s.c_str()); 367 } 368 // Add one to remove the char we were trimming until. 369 *parsed_value = s.substr(colon + 1); 370} 371 372static void ParseDouble(const std::string& option, char after_char, double min, double max, 373 double* parsed_value) { 374 std::string substring; 375 ParseStringAfterChar(option, after_char, &substring); 376 bool sane_val = true; 377 double value; 378 if (false) { 379 // TODO: this doesn't seem to work on the emulator. b/15114595 380 std::stringstream iss(substring); 381 iss >> value; 382 // Ensure that we have a value, there was no cruft after it and it satisfies a sensible range. 383 sane_val = iss.eof() && (value >= min) && (value <= max); 384 } else { 385 char* end = nullptr; 386 value = strtod(substring.c_str(), &end); 387 sane_val = *end == '\0' && value >= min && value <= max; 388 } 389 if (!sane_val) { 390 Usage("Invalid double value %s for option %s\n", substring.c_str(), option.c_str()); 391 } 392 *parsed_value = value; 393} 394 395static constexpr size_t kMinDexFilesForSwap = 2; 396static constexpr size_t kMinDexFileCumulativeSizeForSwap = 20 * MB; 397 398static bool UseSwap(bool is_image, std::vector<const DexFile*>& dex_files) { 399 if (is_image) { 400 // Don't use swap, we know generation should succeed, and we don't want to slow it down. 401 return false; 402 } 403 if (dex_files.size() < kMinDexFilesForSwap) { 404 // If there are less dex files than the threshold, assume it's gonna be fine. 405 return false; 406 } 407 size_t dex_files_size = 0; 408 for (const auto* dex_file : dex_files) { 409 dex_files_size += dex_file->GetHeader().file_size_; 410 } 411 return dex_files_size >= kMinDexFileCumulativeSizeForSwap; 412} 413 414class Dex2Oat FINAL { 415 public: 416 explicit Dex2Oat(TimingLogger* timings) : 417 compiler_kind_(kUseOptimizingCompiler ? Compiler::kOptimizing : Compiler::kQuick), 418 instruction_set_(kRuntimeISA), 419 // Take the default set of instruction features from the build. 420 method_inliner_map_(), 421 runtime_(nullptr), 422 thread_count_(sysconf(_SC_NPROCESSORS_CONF)), 423 start_ns_(NanoTime()), 424 oat_fd_(-1), 425 zip_fd_(-1), 426 image_base_(0U), 427 image_classes_zip_filename_(nullptr), 428 image_classes_filename_(nullptr), 429 compiled_classes_zip_filename_(nullptr), 430 compiled_classes_filename_(nullptr), 431 image_(false), 432 is_host_(false), 433 dump_stats_(false), 434 dump_passes_(false), 435 dump_timing_(false), 436 dump_slow_timing_(kIsDebugBuild), 437 swap_fd_(-1), 438 timings_(timings) {} 439 440 ~Dex2Oat() { 441 // Free opened dex files before deleting the runtime_, because ~DexFile 442 // uses MemMap, which is shut down by ~Runtime. 443 class_path_files_.clear(); 444 opened_dex_files_.clear(); 445 446 // Log completion time before deleting the runtime_, because this accesses 447 // the runtime. 448 LogCompletionTime(); 449 450 if (kIsDebugBuild || (RUNNING_ON_VALGRIND != 0)) { 451 delete runtime_; // See field declaration for why this is manual. 452 } 453 } 454 455 // Parse the arguments from the command line. In case of an unrecognized option or impossible 456 // values/combinations, a usage error will be displayed and exit() is called. Thus, if the method 457 // returns, arguments have been successfully parsed. 458 void ParseArgs(int argc, char** argv) { 459 original_argc = argc; 460 original_argv = argv; 461 462 InitLogging(argv); 463 464 // Skip over argv[0]. 465 argv++; 466 argc--; 467 468 if (argc == 0) { 469 Usage("No arguments specified"); 470 } 471 472 std::string oat_symbols; 473 std::string boot_image_filename; 474 const char* compiler_filter_string = nullptr; 475 bool compile_pic = false; 476 int huge_method_threshold = CompilerOptions::kDefaultHugeMethodThreshold; 477 int large_method_threshold = CompilerOptions::kDefaultLargeMethodThreshold; 478 int small_method_threshold = CompilerOptions::kDefaultSmallMethodThreshold; 479 int tiny_method_threshold = CompilerOptions::kDefaultTinyMethodThreshold; 480 int num_dex_methods_threshold = CompilerOptions::kDefaultNumDexMethodsThreshold; 481 482 // Profile file to use 483 double top_k_profile_threshold = CompilerOptions::kDefaultTopKProfileThreshold; 484 485 bool include_patch_information = CompilerOptions::kDefaultIncludePatchInformation; 486 bool include_debug_symbols = kIsDebugBuild; 487 bool watch_dog_enabled = true; 488 bool generate_gdb_information = kIsDebugBuild; 489 490 PassManagerOptions pass_manager_options; 491 492 std::string error_msg; 493 494 for (int i = 0; i < argc; i++) { 495 const StringPiece option(argv[i]); 496 const bool log_options = false; 497 if (log_options) { 498 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 499 } 500 if (option.starts_with("--dex-file=")) { 501 dex_filenames_.push_back(option.substr(strlen("--dex-file=")).data()); 502 } else if (option.starts_with("--dex-location=")) { 503 dex_locations_.push_back(option.substr(strlen("--dex-location=")).data()); 504 } else if (option.starts_with("--zip-fd=")) { 505 const char* zip_fd_str = option.substr(strlen("--zip-fd=")).data(); 506 if (!ParseInt(zip_fd_str, &zip_fd_)) { 507 Usage("Failed to parse --zip-fd argument '%s' as an integer", zip_fd_str); 508 } 509 if (zip_fd_ < 0) { 510 Usage("--zip-fd passed a negative value %d", zip_fd_); 511 } 512 } else if (option.starts_with("--zip-location=")) { 513 zip_location_ = option.substr(strlen("--zip-location=")).data(); 514 } else if (option.starts_with("--oat-file=")) { 515 oat_filename_ = option.substr(strlen("--oat-file=")).data(); 516 } else if (option.starts_with("--oat-symbols=")) { 517 oat_symbols = option.substr(strlen("--oat-symbols=")).data(); 518 } else if (option.starts_with("--oat-fd=")) { 519 const char* oat_fd_str = option.substr(strlen("--oat-fd=")).data(); 520 if (!ParseInt(oat_fd_str, &oat_fd_)) { 521 Usage("Failed to parse --oat-fd argument '%s' as an integer", oat_fd_str); 522 } 523 if (oat_fd_ < 0) { 524 Usage("--oat-fd passed a negative value %d", oat_fd_); 525 } 526 } else if (option == "--watch-dog") { 527 watch_dog_enabled = true; 528 } else if (option == "--no-watch-dog") { 529 watch_dog_enabled = false; 530 } else if (option == "--gen-gdb-info") { 531 generate_gdb_information = true; 532 // Debug symbols are needed for gdb information. 533 include_debug_symbols = true; 534 } else if (option == "--no-gen-gdb-info") { 535 generate_gdb_information = false; 536 } else if (option.starts_with("-j")) { 537 const char* thread_count_str = option.substr(strlen("-j")).data(); 538 if (!ParseUint(thread_count_str, &thread_count_)) { 539 Usage("Failed to parse -j argument '%s' as an integer", thread_count_str); 540 } 541 } else if (option.starts_with("--oat-location=")) { 542 oat_location_ = option.substr(strlen("--oat-location=")).data(); 543 } else if (option.starts_with("--image=")) { 544 image_filename_ = option.substr(strlen("--image=")).data(); 545 } else if (option.starts_with("--image-classes=")) { 546 image_classes_filename_ = option.substr(strlen("--image-classes=")).data(); 547 } else if (option.starts_with("--image-classes-zip=")) { 548 image_classes_zip_filename_ = option.substr(strlen("--image-classes-zip=")).data(); 549 } else if (option.starts_with("--compiled-classes=")) { 550 compiled_classes_filename_ = option.substr(strlen("--compiled-classes=")).data(); 551 } else if (option.starts_with("--compiled-classes-zip=")) { 552 compiled_classes_zip_filename_ = option.substr(strlen("--compiled-classes-zip=")).data(); 553 } else if (option.starts_with("--base=")) { 554 const char* image_base_str = option.substr(strlen("--base=")).data(); 555 char* end; 556 image_base_ = strtoul(image_base_str, &end, 16); 557 if (end == image_base_str || *end != '\0') { 558 Usage("Failed to parse hexadecimal value for option %s", option.data()); 559 } 560 } else if (option.starts_with("--boot-image=")) { 561 boot_image_filename = option.substr(strlen("--boot-image=")).data(); 562 } else if (option.starts_with("--android-root=")) { 563 android_root_ = option.substr(strlen("--android-root=")).data(); 564 } else if (option.starts_with("--instruction-set=")) { 565 StringPiece instruction_set_str = option.substr(strlen("--instruction-set=")).data(); 566 // StringPiece is not necessarily zero-terminated, so need to make a copy and ensure it. 567 std::unique_ptr<char[]> buf(new char[instruction_set_str.length() + 1]); 568 strncpy(buf.get(), instruction_set_str.data(), instruction_set_str.length()); 569 buf.get()[instruction_set_str.length()] = 0; 570 instruction_set_ = GetInstructionSetFromString(buf.get()); 571 // arm actually means thumb2. 572 if (instruction_set_ == InstructionSet::kArm) { 573 instruction_set_ = InstructionSet::kThumb2; 574 } 575 } else if (option.starts_with("--instruction-set-variant=")) { 576 StringPiece str = option.substr(strlen("--instruction-set-variant=")).data(); 577 instruction_set_features_.reset( 578 InstructionSetFeatures::FromVariant(instruction_set_, str.as_string(), &error_msg)); 579 if (instruction_set_features_.get() == nullptr) { 580 Usage("%s", error_msg.c_str()); 581 } 582 } else if (option.starts_with("--instruction-set-features=")) { 583 StringPiece str = option.substr(strlen("--instruction-set-features=")).data(); 584 if (instruction_set_features_.get() == nullptr) { 585 instruction_set_features_.reset( 586 InstructionSetFeatures::FromVariant(instruction_set_, "default", &error_msg)); 587 if (instruction_set_features_.get() == nullptr) { 588 Usage("Problem initializing default instruction set features variant: %s", 589 error_msg.c_str()); 590 } 591 } 592 instruction_set_features_.reset( 593 instruction_set_features_->AddFeaturesFromString(str.as_string(), &error_msg)); 594 if (instruction_set_features_.get() == nullptr) { 595 Usage("Error parsing '%s': %s", option.data(), error_msg.c_str()); 596 } 597 } else if (option.starts_with("--compiler-backend=")) { 598 StringPiece backend_str = option.substr(strlen("--compiler-backend=")).data(); 599 if (backend_str == "Quick") { 600 compiler_kind_ = Compiler::kQuick; 601 } else if (backend_str == "Optimizing") { 602 compiler_kind_ = Compiler::kOptimizing; 603 } else { 604 Usage("Unknown compiler backend: %s", backend_str.data()); 605 } 606 } else if (option.starts_with("--compiler-filter=")) { 607 compiler_filter_string = option.substr(strlen("--compiler-filter=")).data(); 608 } else if (option == "--compile-pic") { 609 compile_pic = true; 610 } else if (option.starts_with("--huge-method-max=")) { 611 const char* threshold = option.substr(strlen("--huge-method-max=")).data(); 612 if (!ParseInt(threshold, &huge_method_threshold)) { 613 Usage("Failed to parse --huge-method-max '%s' as an integer", threshold); 614 } 615 if (huge_method_threshold < 0) { 616 Usage("--huge-method-max passed a negative value %s", huge_method_threshold); 617 } 618 } else if (option.starts_with("--large-method-max=")) { 619 const char* threshold = option.substr(strlen("--large-method-max=")).data(); 620 if (!ParseInt(threshold, &large_method_threshold)) { 621 Usage("Failed to parse --large-method-max '%s' as an integer", threshold); 622 } 623 if (large_method_threshold < 0) { 624 Usage("--large-method-max passed a negative value %s", large_method_threshold); 625 } 626 } else if (option.starts_with("--small-method-max=")) { 627 const char* threshold = option.substr(strlen("--small-method-max=")).data(); 628 if (!ParseInt(threshold, &small_method_threshold)) { 629 Usage("Failed to parse --small-method-max '%s' as an integer", threshold); 630 } 631 if (small_method_threshold < 0) { 632 Usage("--small-method-max passed a negative value %s", small_method_threshold); 633 } 634 } else if (option.starts_with("--tiny-method-max=")) { 635 const char* threshold = option.substr(strlen("--tiny-method-max=")).data(); 636 if (!ParseInt(threshold, &tiny_method_threshold)) { 637 Usage("Failed to parse --tiny-method-max '%s' as an integer", threshold); 638 } 639 if (tiny_method_threshold < 0) { 640 Usage("--tiny-method-max passed a negative value %s", tiny_method_threshold); 641 } 642 } else if (option.starts_with("--num-dex-methods=")) { 643 const char* threshold = option.substr(strlen("--num-dex-methods=")).data(); 644 if (!ParseInt(threshold, &num_dex_methods_threshold)) { 645 Usage("Failed to parse --num-dex-methods '%s' as an integer", threshold); 646 } 647 if (num_dex_methods_threshold < 0) { 648 Usage("--num-dex-methods passed a negative value %s", num_dex_methods_threshold); 649 } 650 } else if (option == "--host") { 651 is_host_ = true; 652 } else if (option == "--runtime-arg") { 653 if (++i >= argc) { 654 Usage("Missing required argument for --runtime-arg"); 655 } 656 if (log_options) { 657 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 658 } 659 runtime_args_.push_back(argv[i]); 660 } else if (option == "--dump-timing") { 661 dump_timing_ = true; 662 } else if (option == "--dump-passes") { 663 dump_passes_ = true; 664 } else if (option.starts_with("--dump-cfg=")) { 665 dump_cfg_file_name_ = option.substr(strlen("--dump-cfg=")).data(); 666 } else if (option == "--dump-stats") { 667 dump_stats_ = true; 668 } else if (option == "--include-debug-symbols" || option == "--no-strip-symbols") { 669 include_debug_symbols = true; 670 } else if (option == "--no-include-debug-symbols" || option == "--strip-symbols") { 671 include_debug_symbols = false; 672 generate_gdb_information = false; // Depends on debug symbols, see above. 673 } else if (option.starts_with("--profile-file=")) { 674 profile_file_ = option.substr(strlen("--profile-file=")).data(); 675 VLOG(compiler) << "dex2oat: profile file is " << profile_file_; 676 } else if (option == "--no-profile-file") { 677 // No profile 678 } else if (option.starts_with("--top-k-profile-threshold=")) { 679 ParseDouble(option.data(), '=', 0.0, 100.0, &top_k_profile_threshold); 680 } else if (option == "--print-pass-names") { 681 pass_manager_options.SetPrintPassNames(true); 682 } else if (option.starts_with("--disable-passes=")) { 683 const std::string disable_passes = option.substr(strlen("--disable-passes=")).data(); 684 pass_manager_options.SetDisablePassList(disable_passes); 685 } else if (option.starts_with("--print-passes=")) { 686 const std::string print_passes = option.substr(strlen("--print-passes=")).data(); 687 pass_manager_options.SetPrintPassList(print_passes); 688 } else if (option == "--print-all-passes") { 689 pass_manager_options.SetPrintAllPasses(); 690 } else if (option.starts_with("--dump-cfg-passes=")) { 691 const std::string dump_passes_string = option.substr(strlen("--dump-cfg-passes=")).data(); 692 pass_manager_options.SetDumpPassList(dump_passes_string); 693 } else if (option == "--print-pass-options") { 694 pass_manager_options.SetPrintPassOptions(true); 695 } else if (option.starts_with("--pass-options=")) { 696 const std::string options = option.substr(strlen("--pass-options=")).data(); 697 pass_manager_options.SetOverriddenPassOptions(options); 698 } else if (option == "--include-patch-information") { 699 include_patch_information = true; 700 } else if (option == "--no-include-patch-information") { 701 include_patch_information = false; 702 } else if (option.starts_with("--verbose-methods=")) { 703 // TODO: rather than switch off compiler logging, make all VLOG(compiler) messages 704 // conditional on having verbost methods. 705 gLogVerbosity.compiler = false; 706 Split(option.substr(strlen("--verbose-methods=")).ToString(), ',', &verbose_methods_); 707 } else if (option.starts_with("--dump-init-failures=")) { 708 std::string file_name = option.substr(strlen("--dump-init-failures=")).data(); 709 init_failure_output_.reset(new std::ofstream(file_name)); 710 if (init_failure_output_.get() == nullptr) { 711 LOG(ERROR) << "Failed to allocate ofstream"; 712 } else if (init_failure_output_->fail()) { 713 LOG(ERROR) << "Failed to open " << file_name << " for writing the initialization " 714 << "failures."; 715 init_failure_output_.reset(); 716 } 717 } else if (option.starts_with("--swap-file=")) { 718 swap_file_name_ = option.substr(strlen("--swap-file=")).data(); 719 } else if (option.starts_with("--swap-fd=")) { 720 const char* swap_fd_str = option.substr(strlen("--swap-fd=")).data(); 721 if (!ParseInt(swap_fd_str, &swap_fd_)) { 722 Usage("Failed to parse --swap-fd argument '%s' as an integer", swap_fd_str); 723 } 724 if (swap_fd_ < 0) { 725 Usage("--swap-fd passed a negative value %d", swap_fd_); 726 } 727 } else { 728 Usage("Unknown argument %s", option.data()); 729 } 730 } 731 732 if (compiler_kind_ == Compiler::kOptimizing) { 733 // Optimizing only supports PIC mode. 734 compile_pic = true; 735 } 736 737 if (oat_filename_.empty() && oat_fd_ == -1) { 738 Usage("Output must be supplied with either --oat-file or --oat-fd"); 739 } 740 741 if (!oat_filename_.empty() && oat_fd_ != -1) { 742 Usage("--oat-file should not be used with --oat-fd"); 743 } 744 745 if (!oat_symbols.empty() && oat_fd_ != -1) { 746 Usage("--oat-symbols should not be used with --oat-fd"); 747 } 748 749 if (!oat_symbols.empty() && is_host_) { 750 Usage("--oat-symbols should not be used with --host"); 751 } 752 753 if (oat_fd_ != -1 && !image_filename_.empty()) { 754 Usage("--oat-fd should not be used with --image"); 755 } 756 757 if (android_root_.empty()) { 758 const char* android_root_env_var = getenv("ANDROID_ROOT"); 759 if (android_root_env_var == nullptr) { 760 Usage("--android-root unspecified and ANDROID_ROOT not set"); 761 } 762 android_root_ += android_root_env_var; 763 } 764 765 image_ = (!image_filename_.empty()); 766 if (!image_ && boot_image_filename.empty()) { 767 boot_image_filename += android_root_; 768 boot_image_filename += "/framework/boot.art"; 769 } 770 if (!boot_image_filename.empty()) { 771 boot_image_option_ += "-Ximage:"; 772 boot_image_option_ += boot_image_filename; 773 } 774 775 if (image_classes_filename_ != nullptr && !image_) { 776 Usage("--image-classes should only be used with --image"); 777 } 778 779 if (image_classes_filename_ != nullptr && !boot_image_option_.empty()) { 780 Usage("--image-classes should not be used with --boot-image"); 781 } 782 783 if (image_classes_zip_filename_ != nullptr && image_classes_filename_ == nullptr) { 784 Usage("--image-classes-zip should be used with --image-classes"); 785 } 786 787 if (compiled_classes_filename_ != nullptr && !image_) { 788 Usage("--compiled-classes should only be used with --image"); 789 } 790 791 if (compiled_classes_filename_ != nullptr && !boot_image_option_.empty()) { 792 Usage("--compiled-classes should not be used with --boot-image"); 793 } 794 795 if (compiled_classes_zip_filename_ != nullptr && compiled_classes_filename_ == nullptr) { 796 Usage("--compiled-classes-zip should be used with --compiled-classes"); 797 } 798 799 if (dex_filenames_.empty() && zip_fd_ == -1) { 800 Usage("Input must be supplied with either --dex-file or --zip-fd"); 801 } 802 803 if (!dex_filenames_.empty() && zip_fd_ != -1) { 804 Usage("--dex-file should not be used with --zip-fd"); 805 } 806 807 if (!dex_filenames_.empty() && !zip_location_.empty()) { 808 Usage("--dex-file should not be used with --zip-location"); 809 } 810 811 if (dex_locations_.empty()) { 812 for (const char* dex_file_name : dex_filenames_) { 813 dex_locations_.push_back(dex_file_name); 814 } 815 } else if (dex_locations_.size() != dex_filenames_.size()) { 816 Usage("--dex-location arguments do not match --dex-file arguments"); 817 } 818 819 if (zip_fd_ != -1 && zip_location_.empty()) { 820 Usage("--zip-location should be supplied with --zip-fd"); 821 } 822 823 if (boot_image_option_.empty()) { 824 if (image_base_ == 0) { 825 Usage("Non-zero --base not specified"); 826 } 827 } 828 829 oat_stripped_ = oat_filename_; 830 if (!oat_symbols.empty()) { 831 oat_unstripped_ = oat_symbols; 832 } else { 833 oat_unstripped_ = oat_filename_; 834 } 835 836 // If no instruction set feature was given, use the default one for the target 837 // instruction set. 838 if (instruction_set_features_.get() == nullptr) { 839 instruction_set_features_.reset( 840 InstructionSetFeatures::FromVariant(instruction_set_, "default", &error_msg)); 841 if (instruction_set_features_.get() == nullptr) { 842 Usage("Problem initializing default instruction set features variant: %s", 843 error_msg.c_str()); 844 } 845 } 846 847 if (instruction_set_ == kRuntimeISA) { 848 std::unique_ptr<const InstructionSetFeatures> runtime_features( 849 InstructionSetFeatures::FromCppDefines()); 850 if (!instruction_set_features_->Equals(runtime_features.get())) { 851 LOG(WARNING) << "Mismatch between dex2oat instruction set features (" 852 << *instruction_set_features_ << ") and those of dex2oat executable (" 853 << *runtime_features <<") for the command line:\n" 854 << CommandLine(); 855 } 856 } 857 858 if (compiler_filter_string == nullptr) { 859 if (instruction_set_ == kMips && 860 reinterpret_cast<const MipsInstructionSetFeatures*>(instruction_set_features_.get())-> 861 IsR6()) { 862 // For R6, only interpreter mode is working. 863 // TODO: fix compiler for Mips32r6. 864 compiler_filter_string = "interpret-only"; 865 } else if (instruction_set_ == kMips64) { 866 // For Mips64, can only compile in interpreter mode. 867 // TODO: fix compiler for Mips64. 868 compiler_filter_string = "interpret-only"; 869 } else { 870 compiler_filter_string = "speed"; 871 } 872 } 873 CHECK(compiler_filter_string != nullptr); 874 CompilerOptions::CompilerFilter compiler_filter = CompilerOptions::kDefaultCompilerFilter; 875 if (strcmp(compiler_filter_string, "verify-none") == 0) { 876 compiler_filter = CompilerOptions::kVerifyNone; 877 } else if (strcmp(compiler_filter_string, "interpret-only") == 0) { 878 compiler_filter = CompilerOptions::kInterpretOnly; 879 } else if (strcmp(compiler_filter_string, "space") == 0) { 880 compiler_filter = CompilerOptions::kSpace; 881 } else if (strcmp(compiler_filter_string, "balanced") == 0) { 882 compiler_filter = CompilerOptions::kBalanced; 883 } else if (strcmp(compiler_filter_string, "speed") == 0) { 884 compiler_filter = CompilerOptions::kSpeed; 885 } else if (strcmp(compiler_filter_string, "everything") == 0) { 886 compiler_filter = CompilerOptions::kEverything; 887 } else if (strcmp(compiler_filter_string, "time") == 0) { 888 compiler_filter = CompilerOptions::kTime; 889 } else { 890 Usage("Unknown --compiler-filter value %s", compiler_filter_string); 891 } 892 893 // Checks are all explicit until we know the architecture. 894 bool implicit_null_checks = false; 895 bool implicit_so_checks = false; 896 bool implicit_suspend_checks = false; 897 // Set the compilation target's implicit checks options. 898 switch (instruction_set_) { 899 case kArm: 900 case kThumb2: 901 case kArm64: 902 case kX86: 903 case kX86_64: 904 implicit_null_checks = true; 905 implicit_so_checks = true; 906 break; 907 908 default: 909 // Defaults are correct. 910 break; 911 } 912 913 compiler_options_.reset(new CompilerOptions(compiler_filter, 914 huge_method_threshold, 915 large_method_threshold, 916 small_method_threshold, 917 tiny_method_threshold, 918 num_dex_methods_threshold, 919 generate_gdb_information, 920 include_patch_information, 921 top_k_profile_threshold, 922 include_debug_symbols, 923 implicit_null_checks, 924 implicit_so_checks, 925 implicit_suspend_checks, 926 compile_pic, 927 verbose_methods_.empty() ? 928 nullptr : 929 &verbose_methods_, 930 new PassManagerOptions(pass_manager_options), 931 init_failure_output_.get())); 932 933 // Done with usage checks, enable watchdog if requested 934 if (watch_dog_enabled) { 935 watchdog_.reset(new WatchDog(true)); 936 } 937 938 // Fill some values into the key-value store for the oat header. 939 key_value_store_.reset(new SafeMap<std::string, std::string>()); 940 941 // Insert some compiler things. 942 { 943 std::ostringstream oss; 944 for (int i = 0; i < argc; ++i) { 945 if (i > 0) { 946 oss << ' '; 947 } 948 oss << argv[i]; 949 } 950 key_value_store_->Put(OatHeader::kDex2OatCmdLineKey, oss.str()); 951 oss.str(""); // Reset. 952 oss << kRuntimeISA; 953 key_value_store_->Put(OatHeader::kDex2OatHostKey, oss.str()); 954 key_value_store_->Put(OatHeader::kPicKey, compile_pic ? "true" : "false"); 955 } 956 } 957 958 // Check whether the oat output file is writable, and open it for later. Also open a swap file, 959 // if a name is given. 960 bool OpenFile() { 961 bool create_file = !oat_unstripped_.empty(); // as opposed to using open file descriptor 962 if (create_file) { 963 oat_file_.reset(OS::CreateEmptyFile(oat_unstripped_.c_str())); 964 if (oat_location_.empty()) { 965 oat_location_ = oat_filename_; 966 } 967 } else { 968 oat_file_.reset(new File(oat_fd_, oat_location_, true)); 969 oat_file_->DisableAutoClose(); 970 if (oat_file_->SetLength(0) != 0) { 971 PLOG(WARNING) << "Truncating oat file " << oat_location_ << " failed."; 972 } 973 } 974 if (oat_file_.get() == nullptr) { 975 PLOG(ERROR) << "Failed to create oat file: " << oat_location_; 976 return false; 977 } 978 if (create_file && fchmod(oat_file_->Fd(), 0644) != 0) { 979 PLOG(ERROR) << "Failed to make oat file world readable: " << oat_location_; 980 oat_file_->Erase(); 981 return false; 982 } 983 984 // Swap file handling. 985 // 986 // If the swap fd is not -1, we assume this is the file descriptor of an open but unlinked file 987 // that we can use for swap. 988 // 989 // If the swap fd is -1 and we have a swap-file string, open the given file as a swap file. We 990 // will immediately unlink to satisfy the swap fd assumption. 991 if (swap_fd_ == -1 && !swap_file_name_.empty()) { 992 std::unique_ptr<File> swap_file(OS::CreateEmptyFile(swap_file_name_.c_str())); 993 if (swap_file.get() == nullptr) { 994 PLOG(ERROR) << "Failed to create swap file: " << swap_file_name_; 995 return false; 996 } 997 swap_fd_ = swap_file->Fd(); 998 swap_file->MarkUnchecked(); // We don't we to track this, it will be unlinked immediately. 999 swap_file->DisableAutoClose(); // We'll handle it ourselves, the File object will be 1000 // released immediately. 1001 unlink(swap_file_name_.c_str()); 1002 } 1003 1004 return true; 1005 } 1006 1007 void EraseOatFile() { 1008 DCHECK(oat_file_.get() != nullptr); 1009 oat_file_->Erase(); 1010 oat_file_.reset(); 1011 } 1012 1013 // Set up the environment for compilation. Includes starting the runtime and loading/opening the 1014 // boot class path. 1015 bool Setup() { 1016 TimingLogger::ScopedTiming t("dex2oat Setup", timings_); 1017 RuntimeOptions runtime_options; 1018 art::MemMap::Init(); // For ZipEntry::ExtractToMemMap. 1019 if (boot_image_option_.empty()) { 1020 std::string boot_class_path = "-Xbootclasspath:"; 1021 boot_class_path += Join(dex_filenames_, ':'); 1022 runtime_options.push_back(std::make_pair(boot_class_path, nullptr)); 1023 std::string boot_class_path_locations = "-Xbootclasspath-locations:"; 1024 boot_class_path_locations += Join(dex_locations_, ':'); 1025 runtime_options.push_back(std::make_pair(boot_class_path_locations, nullptr)); 1026 } else { 1027 runtime_options.push_back(std::make_pair(boot_image_option_, nullptr)); 1028 } 1029 for (size_t i = 0; i < runtime_args_.size(); i++) { 1030 runtime_options.push_back(std::make_pair(runtime_args_[i], nullptr)); 1031 } 1032 1033 verification_results_.reset(new VerificationResults(compiler_options_.get())); 1034 callbacks_.reset(new QuickCompilerCallbacks(verification_results_.get(), &method_inliner_map_)); 1035 runtime_options.push_back(std::make_pair("compilercallbacks", callbacks_.get())); 1036 runtime_options.push_back( 1037 std::make_pair("imageinstructionset", GetInstructionSetString(instruction_set_))); 1038 1039 // Only allow no boot image for the runtime if we're compiling one. When we compile an app, 1040 // we don't want fallback mode, it will abort as we do not push a boot classpath (it might 1041 // have been stripped in preopting, anyways). 1042 if (!image_) { 1043 runtime_options.push_back(std::make_pair("-Xno-dex-file-fallback", nullptr)); 1044 } 1045 1046 if (!CreateRuntime(runtime_options)) { 1047 return false; 1048 } 1049 1050 // Runtime::Create acquired the mutator_lock_ that is normally given away when we 1051 // Runtime::Start, give it away now so that we don't starve GC. 1052 Thread* self = Thread::Current(); 1053 self->TransitionFromRunnableToSuspended(kNative); 1054 // If we're doing the image, override the compiler filter to force full compilation. Must be 1055 // done ahead of WellKnownClasses::Init that causes verification. Note: doesn't force 1056 // compilation of class initializers. 1057 // Whilst we're in native take the opportunity to initialize well known classes. 1058 WellKnownClasses::Init(self->GetJniEnv()); 1059 1060 // If --image-classes was specified, calculate the full list of classes to include in the image 1061 if (image_classes_filename_ != nullptr) { 1062 std::string error_msg; 1063 if (image_classes_zip_filename_ != nullptr) { 1064 image_classes_.reset(ReadImageClassesFromZip(image_classes_zip_filename_, 1065 image_classes_filename_, 1066 &error_msg)); 1067 } else { 1068 image_classes_.reset(ReadImageClassesFromFile(image_classes_filename_)); 1069 } 1070 if (image_classes_.get() == nullptr) { 1071 LOG(ERROR) << "Failed to create list of image classes from '" << image_classes_filename_ << 1072 "': " << error_msg; 1073 return false; 1074 } 1075 } else if (image_) { 1076 image_classes_.reset(new std::set<std::string>); 1077 } 1078 // If --compiled-classes was specified, calculate the full list of classes to compile in the 1079 // image. 1080 if (compiled_classes_filename_ != nullptr) { 1081 std::string error_msg; 1082 if (compiled_classes_zip_filename_ != nullptr) { 1083 compiled_classes_.reset(ReadImageClassesFromZip(compiled_classes_zip_filename_, 1084 compiled_classes_filename_, 1085 &error_msg)); 1086 } else { 1087 compiled_classes_.reset(ReadImageClassesFromFile(compiled_classes_filename_)); 1088 } 1089 if (compiled_classes_.get() == nullptr) { 1090 LOG(ERROR) << "Failed to create list of compiled classes from '" 1091 << compiled_classes_filename_ << "': " << error_msg; 1092 return false; 1093 } 1094 } else if (image_) { 1095 compiled_classes_.reset(nullptr); // By default compile everything. 1096 } 1097 1098 if (boot_image_option_.empty()) { 1099 dex_files_ = Runtime::Current()->GetClassLinker()->GetBootClassPath(); 1100 } else { 1101 if (dex_filenames_.empty()) { 1102 ATRACE_BEGIN("Opening zip archive from file descriptor"); 1103 std::string error_msg; 1104 std::unique_ptr<ZipArchive> zip_archive(ZipArchive::OpenFromFd(zip_fd_, 1105 zip_location_.c_str(), 1106 &error_msg)); 1107 if (zip_archive.get() == nullptr) { 1108 LOG(ERROR) << "Failed to open zip from file descriptor for '" << zip_location_ << "': " 1109 << error_msg; 1110 return false; 1111 } 1112 if (!DexFile::OpenFromZip(*zip_archive.get(), zip_location_, &error_msg, &opened_dex_files_)) { 1113 LOG(ERROR) << "Failed to open dex from file descriptor for zip file '" << zip_location_ 1114 << "': " << error_msg; 1115 return false; 1116 } 1117 for (auto& dex_file : opened_dex_files_) { 1118 dex_files_.push_back(dex_file.get()); 1119 } 1120 ATRACE_END(); 1121 } else { 1122 size_t failure_count = OpenDexFiles(dex_filenames_, dex_locations_, &opened_dex_files_); 1123 if (failure_count > 0) { 1124 LOG(ERROR) << "Failed to open some dex files: " << failure_count; 1125 return false; 1126 } 1127 for (auto& dex_file : opened_dex_files_) { 1128 dex_files_.push_back(dex_file.get()); 1129 } 1130 } 1131 1132 constexpr bool kSaveDexInput = false; 1133 if (kSaveDexInput) { 1134 for (size_t i = 0; i < dex_files_.size(); ++i) { 1135 const DexFile* dex_file = dex_files_[i]; 1136 std::string tmp_file_name(StringPrintf("/data/local/tmp/dex2oat.%d.%zd.dex", 1137 getpid(), i)); 1138 std::unique_ptr<File> tmp_file(OS::CreateEmptyFile(tmp_file_name.c_str())); 1139 if (tmp_file.get() == nullptr) { 1140 PLOG(ERROR) << "Failed to open file " << tmp_file_name 1141 << ". Try: adb shell chmod 777 /data/local/tmp"; 1142 continue; 1143 } 1144 // This is just dumping files for debugging. Ignore errors, and leave remnants. 1145 UNUSED(tmp_file->WriteFully(dex_file->Begin(), dex_file->Size())); 1146 UNUSED(tmp_file->Flush()); 1147 UNUSED(tmp_file->Close()); 1148 LOG(INFO) << "Wrote input to " << tmp_file_name; 1149 } 1150 } 1151 } 1152 // Ensure opened dex files are writable for dex-to-dex transformations. 1153 for (const auto& dex_file : dex_files_) { 1154 if (!dex_file->EnableWrite()) { 1155 PLOG(ERROR) << "Failed to make .dex file writeable '" << dex_file->GetLocation() << "'\n"; 1156 } 1157 } 1158 1159 // If we use a swap file, ensure we are above the threshold to make it necessary. 1160 if (swap_fd_ != -1) { 1161 if (!UseSwap(image_, dex_files_)) { 1162 close(swap_fd_); 1163 swap_fd_ = -1; 1164 LOG(INFO) << "Decided to run without swap."; 1165 } else { 1166 LOG(INFO) << "Accepted running with swap."; 1167 } 1168 } 1169 // Note that dex2oat won't close the swap_fd_. The compiler driver's swap space will do that. 1170 1171 /* 1172 * If we're not in interpret-only or verify-none mode, go ahead and compile small applications. 1173 * Don't bother to check if we're doing the image. 1174 */ 1175 if (!image_ && 1176 compiler_options_->IsCompilationEnabled() && 1177 compiler_kind_ == Compiler::kQuick) { 1178 size_t num_methods = 0; 1179 for (size_t i = 0; i != dex_files_.size(); ++i) { 1180 const DexFile* dex_file = dex_files_[i]; 1181 CHECK(dex_file != nullptr); 1182 num_methods += dex_file->NumMethodIds(); 1183 } 1184 if (num_methods <= compiler_options_->GetNumDexMethodsThreshold()) { 1185 compiler_options_->SetCompilerFilter(CompilerOptions::kSpeed); 1186 VLOG(compiler) << "Below method threshold, compiling anyways"; 1187 } 1188 } 1189 1190 return true; 1191 } 1192 1193 // Create and invoke the compiler driver. This will compile all the dex files. 1194 void Compile() { 1195 TimingLogger::ScopedTiming t("dex2oat Compile", timings_); 1196 compiler_phases_timings_.reset(new CumulativeLogger("compilation times")); 1197 1198 // Handle and ClassLoader creation needs to come after Runtime::Create 1199 jobject class_loader = nullptr; 1200 Thread* self = Thread::Current(); 1201 if (!boot_image_option_.empty()) { 1202 ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 1203 OpenClassPathFiles(runtime_->GetClassPathString(), dex_files_, &class_path_files_); 1204 ScopedObjectAccess soa(self); 1205 std::vector<const DexFile*> class_path_files(dex_files_); 1206 for (auto& class_path_file : class_path_files_) { 1207 class_path_files.push_back(class_path_file.get()); 1208 } 1209 1210 for (size_t i = 0; i < class_path_files.size(); i++) { 1211 class_linker->RegisterDexFile(*class_path_files[i]); 1212 } 1213 soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader); 1214 ScopedLocalRef<jobject> class_loader_local(soa.Env(), 1215 soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader)); 1216 class_loader = soa.Env()->NewGlobalRef(class_loader_local.get()); 1217 Runtime::Current()->SetCompileTimeClassPath(class_loader, class_path_files); 1218 } 1219 1220 driver_.reset(new CompilerDriver(compiler_options_.get(), 1221 verification_results_.get(), 1222 &method_inliner_map_, 1223 compiler_kind_, 1224 instruction_set_, 1225 instruction_set_features_.get(), 1226 image_, 1227 image_classes_.release(), 1228 compiled_classes_.release(), 1229 thread_count_, 1230 dump_stats_, 1231 dump_passes_, 1232 dump_cfg_file_name_, 1233 compiler_phases_timings_.get(), 1234 swap_fd_, 1235 profile_file_)); 1236 1237 driver_->CompileAll(class_loader, dex_files_, timings_); 1238 } 1239 1240 // Notes on the interleaving of creating the image and oat file to 1241 // ensure the references between the two are correct. 1242 // 1243 // Currently we have a memory layout that looks something like this: 1244 // 1245 // +--------------+ 1246 // | image | 1247 // +--------------+ 1248 // | boot oat | 1249 // +--------------+ 1250 // | alloc spaces | 1251 // +--------------+ 1252 // 1253 // There are several constraints on the loading of the image and boot.oat. 1254 // 1255 // 1. The image is expected to be loaded at an absolute address and 1256 // contains Objects with absolute pointers within the image. 1257 // 1258 // 2. There are absolute pointers from Methods in the image to their 1259 // code in the oat. 1260 // 1261 // 3. There are absolute pointers from the code in the oat to Methods 1262 // in the image. 1263 // 1264 // 4. There are absolute pointers from code in the oat to other code 1265 // in the oat. 1266 // 1267 // To get this all correct, we go through several steps. 1268 // 1269 // 1. We prepare offsets for all data in the oat file and calculate 1270 // the oat data size and code size. During this stage, we also set 1271 // oat code offsets in methods for use by the image writer. 1272 // 1273 // 2. We prepare offsets for the objects in the image and calculate 1274 // the image size. 1275 // 1276 // 3. We create the oat file. Originally this was just our own proprietary 1277 // file but now it is contained within an ELF dynamic object (aka an .so 1278 // file). Since we know the image size and oat data size and code size we 1279 // can prepare the ELF headers and we then know the ELF memory segment 1280 // layout and we can now resolve all references. The compiler provides 1281 // LinkerPatch information in each CompiledMethod and we resolve these, 1282 // using the layout information and image object locations provided by 1283 // image writer, as we're writing the method code. 1284 // 1285 // 4. We create the image file. It needs to know where the oat file 1286 // will be loaded after itself. Originally when oat file was simply 1287 // memory mapped so we could predict where its contents were based 1288 // on the file size. Now that it is an ELF file, we need to inspect 1289 // the ELF file to understand the in memory segment layout including 1290 // where the oat header is located within. 1291 // TODO: We could just remember this information from step 3. 1292 // 1293 // 5. We fixup the ELF program headers so that dlopen will try to 1294 // load the .so at the desired location at runtime by offsetting the 1295 // Elf32_Phdr.p_vaddr values by the desired base address. 1296 // TODO: Do this in step 3. We already know the layout there. 1297 // 1298 // Steps 1.-3. are done by the CreateOatFile() above, steps 4.-5. 1299 // are done by the CreateImageFile() below. 1300 1301 1302 // Write out the generated code part. Calls the OatWriter and ElfBuilder. Also prepares the 1303 // ImageWriter, if necessary. 1304 // Note: Flushing (and closing) the file is the caller's responsibility, except for the failure 1305 // case (when the file will be explicitly erased). 1306 bool CreateOatFile() { 1307 CHECK(key_value_store_.get() != nullptr); 1308 1309 TimingLogger::ScopedTiming t("dex2oat Oat", timings_); 1310 1311 std::unique_ptr<OatWriter> oat_writer; 1312 { 1313 TimingLogger::ScopedTiming t2("dex2oat OatWriter", timings_); 1314 std::string image_file_location; 1315 uint32_t image_file_location_oat_checksum = 0; 1316 uintptr_t image_file_location_oat_data_begin = 0; 1317 int32_t image_patch_delta = 0; 1318 if (image_) { 1319 PrepareImageWriter(image_base_); 1320 } else { 1321 TimingLogger::ScopedTiming t3("Loading image checksum", timings_); 1322 gc::space::ImageSpace* image_space = Runtime::Current()->GetHeap()->GetImageSpace(); 1323 image_file_location_oat_checksum = image_space->GetImageHeader().GetOatChecksum(); 1324 image_file_location_oat_data_begin = 1325 reinterpret_cast<uintptr_t>(image_space->GetImageHeader().GetOatDataBegin()); 1326 image_file_location = image_space->GetImageFilename(); 1327 image_patch_delta = image_space->GetImageHeader().GetPatchDelta(); 1328 } 1329 1330 if (!image_file_location.empty()) { 1331 key_value_store_->Put(OatHeader::kImageLocationKey, image_file_location); 1332 } 1333 1334 oat_writer.reset(new OatWriter(dex_files_, image_file_location_oat_checksum, 1335 image_file_location_oat_data_begin, 1336 image_patch_delta, 1337 driver_.get(), 1338 image_writer_.get(), 1339 timings_, 1340 key_value_store_.get())); 1341 } 1342 1343 if (image_) { 1344 // The OatWriter constructor has already updated offsets in methods and we need to 1345 // prepare method offsets in the image address space for direct method patching. 1346 TimingLogger::ScopedTiming t2("dex2oat Prepare image address space", timings_); 1347 if (!image_writer_->PrepareImageAddressSpace()) { 1348 LOG(ERROR) << "Failed to prepare image address space."; 1349 return false; 1350 } 1351 } 1352 1353 { 1354 TimingLogger::ScopedTiming t2("dex2oat Write ELF", timings_); 1355 if (!driver_->WriteElf(android_root_, is_host_, dex_files_, oat_writer.get(), 1356 oat_file_.get())) { 1357 LOG(ERROR) << "Failed to write ELF file " << oat_file_->GetPath(); 1358 return false; 1359 } 1360 } 1361 1362 VLOG(compiler) << "Oat file written successfully (unstripped): " << oat_location_; 1363 return true; 1364 } 1365 1366 // If we are compiling an image, invoke the image creation routine. Else just skip. 1367 bool HandleImage() { 1368 if (image_) { 1369 TimingLogger::ScopedTiming t("dex2oat ImageWriter", timings_); 1370 if (!CreateImageFile()) { 1371 return false; 1372 } 1373 VLOG(compiler) << "Image written successfully: " << image_filename_; 1374 } 1375 return true; 1376 } 1377 1378 // Create a copy from unstripped to stripped. 1379 bool CopyUnstrippedToStripped() { 1380 // If we don't want to strip in place, copy from unstripped location to stripped location. 1381 // We need to strip after image creation because FixupElf needs to use .strtab. 1382 if (oat_unstripped_ != oat_stripped_) { 1383 // If the oat file is still open, flush it. 1384 if (oat_file_.get() != nullptr && oat_file_->IsOpened()) { 1385 if (!FlushCloseOatFile()) { 1386 return false; 1387 } 1388 } 1389 1390 TimingLogger::ScopedTiming t("dex2oat OatFile copy", timings_); 1391 std::unique_ptr<File> in(OS::OpenFileForReading(oat_unstripped_.c_str())); 1392 std::unique_ptr<File> out(OS::CreateEmptyFile(oat_stripped_.c_str())); 1393 size_t buffer_size = 8192; 1394 std::unique_ptr<uint8_t[]> buffer(new uint8_t[buffer_size]); 1395 while (true) { 1396 int bytes_read = TEMP_FAILURE_RETRY(read(in->Fd(), buffer.get(), buffer_size)); 1397 if (bytes_read <= 0) { 1398 break; 1399 } 1400 bool write_ok = out->WriteFully(buffer.get(), bytes_read); 1401 CHECK(write_ok); 1402 } 1403 if (out->FlushCloseOrErase() != 0) { 1404 PLOG(ERROR) << "Failed to flush and close copied oat file: " << oat_stripped_; 1405 return false; 1406 } 1407 VLOG(compiler) << "Oat file copied successfully (stripped): " << oat_stripped_; 1408 } 1409 return true; 1410 } 1411 1412 bool FlushOatFile() { 1413 if (oat_file_.get() != nullptr) { 1414 TimingLogger::ScopedTiming t2("dex2oat Flush ELF", timings_); 1415 if (oat_file_->Flush() != 0) { 1416 PLOG(ERROR) << "Failed to flush oat file: " << oat_location_ << " / " 1417 << oat_filename_; 1418 oat_file_->Erase(); 1419 return false; 1420 } 1421 } 1422 return true; 1423 } 1424 1425 bool FlushCloseOatFile() { 1426 if (oat_file_.get() != nullptr) { 1427 std::unique_ptr<File> tmp(oat_file_.release()); 1428 if (tmp->FlushCloseOrErase() != 0) { 1429 PLOG(ERROR) << "Failed to flush and close oat file: " << oat_location_ << " / " 1430 << oat_filename_; 1431 return false; 1432 } 1433 } 1434 return true; 1435 } 1436 1437 void DumpTiming() { 1438 if (dump_timing_ || (dump_slow_timing_ && timings_->GetTotalNs() > MsToNs(1000))) { 1439 LOG(INFO) << Dumpable<TimingLogger>(*timings_); 1440 } 1441 if (dump_passes_) { 1442 LOG(INFO) << Dumpable<CumulativeLogger>(*driver_->GetTimingsLogger()); 1443 } 1444 } 1445 1446 CompilerOptions* GetCompilerOptions() const { 1447 return compiler_options_.get(); 1448 } 1449 1450 bool IsImage() const { 1451 return image_; 1452 } 1453 1454 bool IsHost() const { 1455 return is_host_; 1456 } 1457 1458 private: 1459 static size_t OpenDexFiles(const std::vector<const char*>& dex_filenames, 1460 const std::vector<const char*>& dex_locations, 1461 std::vector<std::unique_ptr<const DexFile>>* dex_files) { 1462 DCHECK(dex_files != nullptr) << "OpenDexFiles out-param is NULL"; 1463 size_t failure_count = 0; 1464 for (size_t i = 0; i < dex_filenames.size(); i++) { 1465 const char* dex_filename = dex_filenames[i]; 1466 const char* dex_location = dex_locations[i]; 1467 ATRACE_BEGIN(StringPrintf("Opening dex file '%s'", dex_filenames[i]).c_str()); 1468 std::string error_msg; 1469 if (!OS::FileExists(dex_filename)) { 1470 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 1471 continue; 1472 } 1473 if (!DexFile::Open(dex_filename, dex_location, &error_msg, dex_files)) { 1474 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 1475 ++failure_count; 1476 } 1477 ATRACE_END(); 1478 } 1479 return failure_count; 1480 } 1481 1482 // Returns true if dex_files has a dex with the named location. 1483 static bool DexFilesContains(const std::vector<const DexFile*>& dex_files, 1484 const std::string& location) { 1485 for (size_t i = 0; i < dex_files.size(); ++i) { 1486 if (dex_files[i]->GetLocation() == location) { 1487 return true; 1488 } 1489 } 1490 return false; 1491 } 1492 1493 // Appends to opened_dex_files any elements of class_path that dex_files 1494 // doesn't already contain. This will open those dex files as necessary. 1495 static void OpenClassPathFiles(const std::string& class_path, 1496 std::vector<const DexFile*> dex_files, 1497 std::vector<std::unique_ptr<const DexFile>>* opened_dex_files) { 1498 DCHECK(opened_dex_files != nullptr) << "OpenClassPathFiles out-param is NULL"; 1499 std::vector<std::string> parsed; 1500 Split(class_path, ':', &parsed); 1501 // Take Locks::mutator_lock_ so that lock ordering on the ClassLinker::dex_lock_ is maintained. 1502 ScopedObjectAccess soa(Thread::Current()); 1503 for (size_t i = 0; i < parsed.size(); ++i) { 1504 if (DexFilesContains(dex_files, parsed[i])) { 1505 continue; 1506 } 1507 std::string error_msg; 1508 if (!DexFile::Open(parsed[i].c_str(), parsed[i].c_str(), &error_msg, opened_dex_files)) { 1509 LOG(WARNING) << "Failed to open dex file '" << parsed[i] << "': " << error_msg; 1510 } 1511 } 1512 } 1513 1514 // Create a runtime necessary for compilation. 1515 bool CreateRuntime(const RuntimeOptions& runtime_options) 1516 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_) { 1517 if (!Runtime::Create(runtime_options, false)) { 1518 LOG(ERROR) << "Failed to create runtime"; 1519 return false; 1520 } 1521 Runtime* runtime = Runtime::Current(); 1522 runtime->SetInstructionSet(instruction_set_); 1523 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 1524 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 1525 if (!runtime->HasCalleeSaveMethod(type)) { 1526 runtime->SetCalleeSaveMethod(runtime->CreateCalleeSaveMethod(), type); 1527 } 1528 } 1529 runtime->GetClassLinker()->FixupDexCaches(runtime->GetResolutionMethod()); 1530 runtime->GetClassLinker()->RunRootClinits(); 1531 runtime_ = runtime; 1532 return true; 1533 } 1534 1535 void PrepareImageWriter(uintptr_t image_base) { 1536 image_writer_.reset(new ImageWriter(*driver_, image_base, compiler_options_->GetCompilePic())); 1537 } 1538 1539 // Let the ImageWriter write the image file. If we do not compile PIC, also fix up the oat file. 1540 bool CreateImageFile() 1541 LOCKS_EXCLUDED(Locks::mutator_lock_) { 1542 CHECK(image_writer_ != nullptr); 1543 if (!image_writer_->Write(image_filename_, oat_unstripped_, oat_location_)) { 1544 LOG(ERROR) << "Failed to create image file " << image_filename_; 1545 return false; 1546 } 1547 uintptr_t oat_data_begin = image_writer_->GetOatDataBegin(); 1548 1549 // Destroy ImageWriter before doing FixupElf. 1550 image_writer_.reset(); 1551 1552 // Do not fix up the ELF file if we are --compile-pic 1553 if (!compiler_options_->GetCompilePic()) { 1554 std::unique_ptr<File> oat_file(OS::OpenFileReadWrite(oat_unstripped_.c_str())); 1555 if (oat_file.get() == nullptr) { 1556 PLOG(ERROR) << "Failed to open ELF file: " << oat_unstripped_; 1557 return false; 1558 } 1559 1560 if (!ElfWriter::Fixup(oat_file.get(), oat_data_begin)) { 1561 oat_file->Erase(); 1562 LOG(ERROR) << "Failed to fixup ELF file " << oat_file->GetPath(); 1563 return false; 1564 } 1565 1566 if (oat_file->FlushCloseOrErase()) { 1567 PLOG(ERROR) << "Failed to flush and close fixed ELF file " << oat_file->GetPath(); 1568 return false; 1569 } 1570 } 1571 1572 return true; 1573 } 1574 1575 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 1576 static std::set<std::string>* ReadImageClassesFromFile(const char* image_classes_filename) { 1577 std::unique_ptr<std::ifstream> image_classes_file(new std::ifstream(image_classes_filename, 1578 std::ifstream::in)); 1579 if (image_classes_file.get() == nullptr) { 1580 LOG(ERROR) << "Failed to open image classes file " << image_classes_filename; 1581 return nullptr; 1582 } 1583 std::unique_ptr<std::set<std::string>> result(ReadImageClasses(*image_classes_file)); 1584 image_classes_file->close(); 1585 return result.release(); 1586 } 1587 1588 static std::set<std::string>* ReadImageClasses(std::istream& image_classes_stream) { 1589 std::unique_ptr<std::set<std::string>> image_classes(new std::set<std::string>); 1590 while (image_classes_stream.good()) { 1591 std::string dot; 1592 std::getline(image_classes_stream, dot); 1593 if (StartsWith(dot, "#") || dot.empty()) { 1594 continue; 1595 } 1596 std::string descriptor(DotToDescriptor(dot.c_str())); 1597 image_classes->insert(descriptor); 1598 } 1599 return image_classes.release(); 1600 } 1601 1602 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 1603 static std::set<std::string>* ReadImageClassesFromZip(const char* zip_filename, 1604 const char* image_classes_filename, 1605 std::string* error_msg) { 1606 std::unique_ptr<ZipArchive> zip_archive(ZipArchive::Open(zip_filename, error_msg)); 1607 if (zip_archive.get() == nullptr) { 1608 return nullptr; 1609 } 1610 std::unique_ptr<ZipEntry> zip_entry(zip_archive->Find(image_classes_filename, error_msg)); 1611 if (zip_entry.get() == nullptr) { 1612 *error_msg = StringPrintf("Failed to find '%s' within '%s': %s", image_classes_filename, 1613 zip_filename, error_msg->c_str()); 1614 return nullptr; 1615 } 1616 std::unique_ptr<MemMap> image_classes_file(zip_entry->ExtractToMemMap(zip_filename, 1617 image_classes_filename, 1618 error_msg)); 1619 if (image_classes_file.get() == nullptr) { 1620 *error_msg = StringPrintf("Failed to extract '%s' from '%s': %s", image_classes_filename, 1621 zip_filename, error_msg->c_str()); 1622 return nullptr; 1623 } 1624 const std::string image_classes_string(reinterpret_cast<char*>(image_classes_file->Begin()), 1625 image_classes_file->Size()); 1626 std::istringstream image_classes_stream(image_classes_string); 1627 return ReadImageClasses(image_classes_stream); 1628 } 1629 1630 void LogCompletionTime() { 1631 // Note: when creation of a runtime fails, e.g., when trying to compile an app but when there 1632 // is no image, there won't be a Runtime::Current(). 1633 LOG(INFO) << "dex2oat took " << PrettyDuration(NanoTime() - start_ns_) 1634 << " (threads: " << thread_count_ << ") " 1635 << ((Runtime::Current() != nullptr) ? 1636 driver_->GetMemoryUsageString(kIsDebugBuild || VLOG_IS_ON(compiler)) : 1637 ""); 1638 } 1639 1640 std::unique_ptr<CompilerOptions> compiler_options_; 1641 Compiler::Kind compiler_kind_; 1642 1643 InstructionSet instruction_set_; 1644 std::unique_ptr<const InstructionSetFeatures> instruction_set_features_; 1645 1646 std::unique_ptr<SafeMap<std::string, std::string> > key_value_store_; 1647 1648 std::unique_ptr<VerificationResults> verification_results_; 1649 DexFileToMethodInlinerMap method_inliner_map_; 1650 std::unique_ptr<QuickCompilerCallbacks> callbacks_; 1651 1652 // Ownership for the class path files. 1653 std::vector<std::unique_ptr<const DexFile>> class_path_files_; 1654 1655 // Not a unique_ptr as we want to just exit on non-debug builds, not bringing the runtime down 1656 // in an orderly fashion. The destructor takes care of deleting this. 1657 Runtime* runtime_; 1658 1659 size_t thread_count_; 1660 uint64_t start_ns_; 1661 std::unique_ptr<WatchDog> watchdog_; 1662 std::unique_ptr<File> oat_file_; 1663 std::string oat_stripped_; 1664 std::string oat_unstripped_; 1665 std::string oat_location_; 1666 std::string oat_filename_; 1667 int oat_fd_; 1668 std::vector<const char*> dex_filenames_; 1669 std::vector<const char*> dex_locations_; 1670 int zip_fd_; 1671 std::string zip_location_; 1672 std::string boot_image_option_; 1673 std::vector<const char*> runtime_args_; 1674 std::string image_filename_; 1675 uintptr_t image_base_; 1676 const char* image_classes_zip_filename_; 1677 const char* image_classes_filename_; 1678 const char* compiled_classes_zip_filename_; 1679 const char* compiled_classes_filename_; 1680 std::unique_ptr<std::set<std::string>> image_classes_; 1681 std::unique_ptr<std::set<std::string>> compiled_classes_; 1682 bool image_; 1683 std::unique_ptr<ImageWriter> image_writer_; 1684 bool is_host_; 1685 std::string android_root_; 1686 std::vector<const DexFile*> dex_files_; 1687 std::vector<std::unique_ptr<const DexFile>> opened_dex_files_; 1688 std::unique_ptr<CompilerDriver> driver_; 1689 std::vector<std::string> verbose_methods_; 1690 bool dump_stats_; 1691 bool dump_passes_; 1692 bool dump_timing_; 1693 bool dump_slow_timing_; 1694 std::string dump_cfg_file_name_; 1695 std::string swap_file_name_; 1696 int swap_fd_; 1697 std::string profile_file_; // Profile file to use 1698 TimingLogger* timings_; 1699 std::unique_ptr<CumulativeLogger> compiler_phases_timings_; 1700 std::unique_ptr<std::ostream> init_failure_output_; 1701 1702 DISALLOW_IMPLICIT_CONSTRUCTORS(Dex2Oat); 1703}; 1704 1705const unsigned int WatchDog::kWatchDogTimeoutSeconds; 1706 1707static void b13564922() { 1708#if defined(__linux__) && defined(__arm__) 1709 int major, minor; 1710 struct utsname uts; 1711 if (uname(&uts) != -1 && 1712 sscanf(uts.release, "%d.%d", &major, &minor) == 2 && 1713 ((major < 3) || ((major == 3) && (minor < 4)))) { 1714 // Kernels before 3.4 don't handle the ASLR well and we can run out of address 1715 // space (http://b/13564922). Work around the issue by inhibiting further mmap() randomization. 1716 int old_personality = personality(0xffffffff); 1717 if ((old_personality & ADDR_NO_RANDOMIZE) == 0) { 1718 int new_personality = personality(old_personality | ADDR_NO_RANDOMIZE); 1719 if (new_personality == -1) { 1720 LOG(WARNING) << "personality(. | ADDR_NO_RANDOMIZE) failed."; 1721 } 1722 } 1723 } 1724#endif 1725} 1726 1727static int CompileImage(Dex2Oat& dex2oat) { 1728 dex2oat.Compile(); 1729 1730 // Create the boot.oat. 1731 if (!dex2oat.CreateOatFile()) { 1732 dex2oat.EraseOatFile(); 1733 return EXIT_FAILURE; 1734 } 1735 1736 // Flush and close the boot.oat. We always expect the output file by name, and it will be 1737 // re-opened from the unstripped name. 1738 if (!dex2oat.FlushCloseOatFile()) { 1739 return EXIT_FAILURE; 1740 } 1741 1742 // Creates the boot.art and patches the boot.oat. 1743 if (!dex2oat.HandleImage()) { 1744 return EXIT_FAILURE; 1745 } 1746 1747 // When given --host, finish early without stripping. 1748 if (dex2oat.IsHost()) { 1749 dex2oat.DumpTiming(); 1750 return EXIT_SUCCESS; 1751 } 1752 1753 // Copy unstripped to stripped location, if necessary. 1754 if (!dex2oat.CopyUnstrippedToStripped()) { 1755 return EXIT_FAILURE; 1756 } 1757 1758 // FlushClose again, as stripping might have re-opened the oat file. 1759 if (!dex2oat.FlushCloseOatFile()) { 1760 return EXIT_FAILURE; 1761 } 1762 1763 dex2oat.DumpTiming(); 1764 return EXIT_SUCCESS; 1765} 1766 1767static int CompileApp(Dex2Oat& dex2oat) { 1768 dex2oat.Compile(); 1769 1770 // Create the app oat. 1771 if (!dex2oat.CreateOatFile()) { 1772 dex2oat.EraseOatFile(); 1773 return EXIT_FAILURE; 1774 } 1775 1776 // Do not close the oat file here. We might haven gotten the output file by file descriptor, 1777 // which we would lose. 1778 if (!dex2oat.FlushOatFile()) { 1779 return EXIT_FAILURE; 1780 } 1781 1782 // When given --host, finish early without stripping. 1783 if (dex2oat.IsHost()) { 1784 if (!dex2oat.FlushCloseOatFile()) { 1785 return EXIT_FAILURE; 1786 } 1787 1788 dex2oat.DumpTiming(); 1789 return EXIT_SUCCESS; 1790 } 1791 1792 // Copy unstripped to stripped location, if necessary. This will implicitly flush & close the 1793 // unstripped version. If this is given, we expect to be able to open writable files by name. 1794 if (!dex2oat.CopyUnstrippedToStripped()) { 1795 return EXIT_FAILURE; 1796 } 1797 1798 // Flush and close the file. 1799 if (!dex2oat.FlushCloseOatFile()) { 1800 return EXIT_FAILURE; 1801 } 1802 1803 dex2oat.DumpTiming(); 1804 return EXIT_SUCCESS; 1805} 1806 1807static int dex2oat(int argc, char** argv) { 1808 b13564922(); 1809 1810 TimingLogger timings("compiler", false, false); 1811 1812 Dex2Oat dex2oat(&timings); 1813 1814 // Parse arguments. Argument mistakes will lead to exit(EXIT_FAILURE) in UsageError. 1815 dex2oat.ParseArgs(argc, argv); 1816 1817 // Check early that the result of compilation can be written 1818 if (!dex2oat.OpenFile()) { 1819 return EXIT_FAILURE; 1820 } 1821 1822 LOG(INFO) << CommandLine(); 1823 1824 if (!dex2oat.Setup()) { 1825 dex2oat.EraseOatFile(); 1826 return EXIT_FAILURE; 1827 } 1828 1829 if (dex2oat.IsImage()) { 1830 return CompileImage(dex2oat); 1831 } else { 1832 return CompileApp(dex2oat); 1833 } 1834} 1835} // namespace art 1836 1837int main(int argc, char** argv) { 1838 int result = art::dex2oat(argc, argv); 1839 // Everything was done, do an explicit exit here to avoid running Runtime destructors that take 1840 // time (bug 10645725) unless we're a debug build or running on valgrind. Note: The Dex2Oat class 1841 // should not destruct the runtime in this case. 1842 if (!art::kIsDebugBuild && (RUNNING_ON_VALGRIND == 0)) { 1843 exit(result); 1844 } 1845 return result; 1846} 1847