dex2oat.cc revision dcdc85bbd569f0ee66c331b4219c19304a616214
1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include <inttypes.h> 18#include <stdio.h> 19#include <stdlib.h> 20#include <sys/stat.h> 21#include "base/memory_tool.h" 22 23#include <fstream> 24#include <iostream> 25#include <sstream> 26#include <string> 27#include <unordered_set> 28#include <vector> 29 30#if defined(__linux__) && defined(__arm__) 31#include <sys/personality.h> 32#include <sys/utsname.h> 33#endif 34 35#define ATRACE_TAG ATRACE_TAG_DALVIK 36#include <cutils/trace.h> 37 38#include "art_method-inl.h" 39#include "arch/instruction_set_features.h" 40#include "arch/mips/instruction_set_features_mips.h" 41#include "base/dumpable.h" 42#include "base/macros.h" 43#include "base/stl_util.h" 44#include "base/stringpiece.h" 45#include "base/time_utils.h" 46#include "base/timing_logger.h" 47#include "base/unix_file/fd_file.h" 48#include "class_linker.h" 49#include "compiler.h" 50#include "compiler_callbacks.h" 51#include "dex_file-inl.h" 52#include "dex/pass_manager.h" 53#include "dex/verification_results.h" 54#include "dex/quick_compiler_callbacks.h" 55#include "dex/quick/dex_file_to_method_inliner_map.h" 56#include "driver/compiler_driver.h" 57#include "driver/compiler_options.h" 58#include "dwarf/method_debug_info.h" 59#include "elf_file.h" 60#include "elf_writer.h" 61#include "elf_writer_quick.h" 62#include "gc/space/image_space.h" 63#include "gc/space/space-inl.h" 64#include "image_writer.h" 65#include "interpreter/unstarted_runtime.h" 66#include "leb128.h" 67#include "mirror/class-inl.h" 68#include "mirror/class_loader.h" 69#include "mirror/object-inl.h" 70#include "mirror/object_array-inl.h" 71#include "oat_writer.h" 72#include "os.h" 73#include "runtime.h" 74#include "runtime_options.h" 75#include "ScopedLocalRef.h" 76#include "scoped_thread_state_change.h" 77#include "utils.h" 78#include "well_known_classes.h" 79#include "zip_archive.h" 80 81namespace art { 82 83static int original_argc; 84static char** original_argv; 85 86static std::string CommandLine() { 87 std::vector<std::string> command; 88 for (int i = 0; i < original_argc; ++i) { 89 command.push_back(original_argv[i]); 90 } 91 return Join(command, ' '); 92} 93 94// A stripped version. Remove some less essential parameters. If we see a "--zip-fd=" parameter, be 95// even more aggressive. There won't be much reasonable data here for us in that case anyways (the 96// locations are all staged). 97static std::string StrippedCommandLine() { 98 std::vector<std::string> command; 99 100 // Do a pre-pass to look for zip-fd. 101 bool saw_zip_fd = false; 102 for (int i = 0; i < original_argc; ++i) { 103 if (StartsWith(original_argv[i], "--zip-fd=")) { 104 saw_zip_fd = true; 105 break; 106 } 107 } 108 109 // Now filter out things. 110 for (int i = 0; i < original_argc; ++i) { 111 // All runtime-arg parameters are dropped. 112 if (strcmp(original_argv[i], "--runtime-arg") == 0) { 113 i++; // Drop the next part, too. 114 continue; 115 } 116 117 // Any instruction-setXXX is dropped. 118 if (StartsWith(original_argv[i], "--instruction-set")) { 119 continue; 120 } 121 122 // The boot image is dropped. 123 if (StartsWith(original_argv[i], "--boot-image=")) { 124 continue; 125 } 126 127 // This should leave any dex-file and oat-file options, describing what we compiled. 128 129 // However, we prefer to drop this when we saw --zip-fd. 130 if (saw_zip_fd) { 131 // Drop anything --zip-X, --dex-X, --oat-X, --swap-X, or --app-image-X 132 if (StartsWith(original_argv[i], "--zip-") || 133 StartsWith(original_argv[i], "--dex-") || 134 StartsWith(original_argv[i], "--oat-") || 135 StartsWith(original_argv[i], "--swap-") || 136 StartsWith(original_argv[i], "--app-image-")) { 137 continue; 138 } 139 } 140 141 command.push_back(original_argv[i]); 142 } 143 144 // Construct the final output. 145 if (command.size() <= 1U) { 146 // It seems only "/system/bin/dex2oat" is left, or not even that. Use a pretty line. 147 return "Starting dex2oat."; 148 } 149 return Join(command, ' '); 150} 151 152static void UsageErrorV(const char* fmt, va_list ap) { 153 std::string error; 154 StringAppendV(&error, fmt, ap); 155 LOG(ERROR) << error; 156} 157 158static void UsageError(const char* fmt, ...) { 159 va_list ap; 160 va_start(ap, fmt); 161 UsageErrorV(fmt, ap); 162 va_end(ap); 163} 164 165NO_RETURN static void Usage(const char* fmt, ...) { 166 va_list ap; 167 va_start(ap, fmt); 168 UsageErrorV(fmt, ap); 169 va_end(ap); 170 171 UsageError("Command: %s", CommandLine().c_str()); 172 173 UsageError("Usage: dex2oat [options]..."); 174 UsageError(""); 175 UsageError(" -j<number>: specifies the number of threads used for compilation."); 176 UsageError(" Default is the number of detected hardware threads available on the"); 177 UsageError(" host system."); 178 UsageError(" Example: -j12"); 179 UsageError(""); 180 UsageError(" --dex-file=<dex-file>: specifies a .dex, .jar, or .apk file to compile."); 181 UsageError(" Example: --dex-file=/system/framework/core.jar"); 182 UsageError(""); 183 UsageError(" --dex-location=<dex-location>: specifies an alternative dex location to"); 184 UsageError(" encode in the oat file for the corresponding --dex-file argument."); 185 UsageError(" Example: --dex-file=/home/build/out/system/framework/core.jar"); 186 UsageError(" --dex-location=/system/framework/core.jar"); 187 UsageError(""); 188 UsageError(" --zip-fd=<file-descriptor>: specifies a file descriptor of a zip file"); 189 UsageError(" containing a classes.dex file to compile."); 190 UsageError(" Example: --zip-fd=5"); 191 UsageError(""); 192 UsageError(" --zip-location=<zip-location>: specifies a symbolic name for the file"); 193 UsageError(" corresponding to the file descriptor specified by --zip-fd."); 194 UsageError(" Example: --zip-location=/system/app/Calculator.apk"); 195 UsageError(""); 196 UsageError(" --oat-file=<file.oat>: specifies an oat output destination via a filename."); 197 UsageError(" Example: --oat-file=/system/framework/boot.oat"); 198 UsageError(""); 199 UsageError(" --oat-fd=<number>: specifies the oat output destination via a file descriptor."); 200 UsageError(" Example: --oat-fd=6"); 201 UsageError(""); 202 UsageError(" --oat-location=<oat-name>: specifies a symbolic name for the file corresponding"); 203 UsageError(" to the file descriptor specified by --oat-fd."); 204 UsageError(" Example: --oat-location=/data/dalvik-cache/system@app@Calculator.apk.oat"); 205 UsageError(""); 206 UsageError(" --oat-symbols=<file.oat>: specifies an oat output destination with full symbols."); 207 UsageError(" Example: --oat-symbols=/symbols/system/framework/boot.oat"); 208 UsageError(""); 209 UsageError(" --image=<file.art>: specifies an output image filename."); 210 UsageError(" Example: --image=/system/framework/boot.art"); 211 UsageError(""); 212 UsageError(" --image-format=(uncompressed|lz4):"); 213 UsageError(" Which format to store the image."); 214 UsageError(" Example: --image-format=lz4"); 215 UsageError(" Default: uncompressed"); 216 UsageError(""); 217 UsageError(" --image-classes=<classname-file>: specifies classes to include in an image."); 218 UsageError(" Example: --image=frameworks/base/preloaded-classes"); 219 UsageError(""); 220 UsageError(" --base=<hex-address>: specifies the base address when creating a boot image."); 221 UsageError(" Example: --base=0x50000000"); 222 UsageError(""); 223 UsageError(" --boot-image=<file.art>: provide the image file for the boot class path."); 224 UsageError(" Do not include the arch as part of the name, it is added automatically."); 225 UsageError(" Example: --boot-image=/system/framework/boot.art"); 226 UsageError(" (specifies /system/framework/<arch>/boot.art as the image file)"); 227 UsageError(" Default: $ANDROID_ROOT/system/framework/boot.art"); 228 UsageError(""); 229 UsageError(" --android-root=<path>: used to locate libraries for portable linking."); 230 UsageError(" Example: --android-root=out/host/linux-x86"); 231 UsageError(" Default: $ANDROID_ROOT"); 232 UsageError(""); 233 UsageError(" --instruction-set=(arm|arm64|mips|mips64|x86|x86_64): compile for a particular"); 234 UsageError(" instruction set."); 235 UsageError(" Example: --instruction-set=x86"); 236 UsageError(" Default: arm"); 237 UsageError(""); 238 UsageError(" --instruction-set-features=...,: Specify instruction set features"); 239 UsageError(" Example: --instruction-set-features=div"); 240 UsageError(" Default: default"); 241 UsageError(""); 242 UsageError(" --compile-pic: Force indirect use of code, methods, and classes"); 243 UsageError(" Default: disabled"); 244 UsageError(""); 245 UsageError(" --compiler-backend=(Quick|Optimizing): select compiler backend"); 246 UsageError(" set."); 247 UsageError(" Example: --compiler-backend=Optimizing"); 248 UsageError(" Default: Optimizing"); 249 UsageError(""); 250 UsageError(" --compiler-filter=" 251 "(verify-none" 252 "|interpret-only" 253 "|space" 254 "|balanced" 255 "|speed" 256 "|everything" 257 "|time):"); 258 UsageError(" select compiler filter."); 259 UsageError(" Example: --compiler-filter=everything"); 260 UsageError(" Default: speed"); 261 UsageError(""); 262 UsageError(" --huge-method-max=<method-instruction-count>: threshold size for a huge"); 263 UsageError(" method for compiler filter tuning."); 264 UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold); 265 UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold); 266 UsageError(""); 267 UsageError(" --large-method-max=<method-instruction-count>: threshold size for a large"); 268 UsageError(" method for compiler filter tuning."); 269 UsageError(" Example: --large-method-max=%d", CompilerOptions::kDefaultLargeMethodThreshold); 270 UsageError(" Default: %d", CompilerOptions::kDefaultLargeMethodThreshold); 271 UsageError(""); 272 UsageError(" --small-method-max=<method-instruction-count>: threshold size for a small"); 273 UsageError(" method for compiler filter tuning."); 274 UsageError(" Example: --small-method-max=%d", CompilerOptions::kDefaultSmallMethodThreshold); 275 UsageError(" Default: %d", CompilerOptions::kDefaultSmallMethodThreshold); 276 UsageError(""); 277 UsageError(" --tiny-method-max=<method-instruction-count>: threshold size for a tiny"); 278 UsageError(" method for compiler filter tuning."); 279 UsageError(" Example: --tiny-method-max=%d", CompilerOptions::kDefaultTinyMethodThreshold); 280 UsageError(" Default: %d", CompilerOptions::kDefaultTinyMethodThreshold); 281 UsageError(""); 282 UsageError(" --num-dex-methods=<method-count>: threshold size for a small dex file for"); 283 UsageError(" compiler filter tuning. If the input has fewer than this many methods"); 284 UsageError(" and the filter is not interpret-only or verify-none, overrides the"); 285 UsageError(" filter to use speed"); 286 UsageError(" Example: --num-dex-method=%d", CompilerOptions::kDefaultNumDexMethodsThreshold); 287 UsageError(" Default: %d", CompilerOptions::kDefaultNumDexMethodsThreshold); 288 UsageError(""); 289 UsageError(" --inline-depth-limit=<depth-limit>: the depth limit of inlining for fine tuning"); 290 UsageError(" the compiler. A zero value will disable inlining. Honored only by Optimizing."); 291 UsageError(" Has priority over the --compiler-filter option. Intended for "); 292 UsageError(" development/experimental use."); 293 UsageError(" Example: --inline-depth-limit=%d", CompilerOptions::kDefaultInlineDepthLimit); 294 UsageError(" Default: %d", CompilerOptions::kDefaultInlineDepthLimit); 295 UsageError(""); 296 UsageError(" --inline-max-code-units=<code-units-count>: the maximum code units that a method"); 297 UsageError(" can have to be considered for inlining. A zero value will disable inlining."); 298 UsageError(" Honored only by Optimizing. Has priority over the --compiler-filter option."); 299 UsageError(" Intended for development/experimental use."); 300 UsageError(" Example: --inline-max-code-units=%d", 301 CompilerOptions::kDefaultInlineMaxCodeUnits); 302 UsageError(" Default: %d", CompilerOptions::kDefaultInlineMaxCodeUnits); 303 UsageError(""); 304 UsageError(" --dump-timing: display a breakdown of where time was spent"); 305 UsageError(""); 306 UsageError(" --include-patch-information: Include patching information so the generated code"); 307 UsageError(" can have its base address moved without full recompilation."); 308 UsageError(""); 309 UsageError(" --no-include-patch-information: Do not include patching information."); 310 UsageError(""); 311 UsageError(" -g"); 312 UsageError(" --generate-debug-info: Generate debug information for native debugging,"); 313 UsageError(" such as stack unwinding information, ELF symbols and DWARF sections."); 314 UsageError(" This generates all the available information. Unneeded parts can be"); 315 UsageError(" stripped using standard command line tools such as strip or objcopy."); 316 UsageError(" (enabled by default in debug builds, disabled by default otherwise)"); 317 UsageError(""); 318 UsageError(" --no-generate-debug-info: Do not generate debug information for native debugging."); 319 UsageError(""); 320 UsageError(" --debuggable: Produce code debuggable with Java debugger. Implies -g."); 321 UsageError(""); 322 UsageError(" --native-debuggable: Produce code debuggable with native debugger (like LLDB)."); 323 UsageError(" Implies --debuggable."); 324 UsageError(""); 325 UsageError(" --runtime-arg <argument>: used to specify various arguments for the runtime,"); 326 UsageError(" such as initial heap size, maximum heap size, and verbose output."); 327 UsageError(" Use a separate --runtime-arg switch for each argument."); 328 UsageError(" Example: --runtime-arg -Xms256m"); 329 UsageError(""); 330 UsageError(" --profile-file=<filename>: specify profiler output file to use for compilation."); 331 UsageError(""); 332 UsageError(" --print-pass-names: print a list of pass names"); 333 UsageError(""); 334 UsageError(" --disable-passes=<pass-names>: disable one or more passes separated by comma."); 335 UsageError(" Example: --disable-passes=UseCount,BBOptimizations"); 336 UsageError(""); 337 UsageError(" --print-pass-options: print a list of passes that have configurable options along " 338 "with the setting."); 339 UsageError(" Will print default if no overridden setting exists."); 340 UsageError(""); 341 UsageError(" --pass-options=Pass1Name:Pass1OptionName:Pass1Option#," 342 "Pass2Name:Pass2OptionName:Pass2Option#"); 343 UsageError(" Used to specify a pass specific option. The setting itself must be integer."); 344 UsageError(" Separator used between options is a comma."); 345 UsageError(""); 346 UsageError(" --swap-file=<file-name>: specifies a file to use for swap."); 347 UsageError(" Example: --swap-file=/data/tmp/swap.001"); 348 UsageError(""); 349 UsageError(" --swap-fd=<file-descriptor>: specifies a file to use for swap (by descriptor)."); 350 UsageError(" Example: --swap-fd=10"); 351 UsageError(""); 352 UsageError(" --app-image-fd=<file-descriptor>: specify output file descriptor for app image."); 353 UsageError(" Example: --app-image-fd=10"); 354 UsageError(""); 355 UsageError(" --app-image-file=<file-name>: specify a file name for app image."); 356 UsageError(" Example: --app-image-file=/data/dalvik-cache/system@app@Calculator.apk.art"); 357 UsageError(""); 358 UsageError(" --multi-image: specify that separate oat and image files be generated for each " 359 "input dex file."); 360 UsageError(""); 361 std::cerr << "See log for usage error information\n"; 362 exit(EXIT_FAILURE); 363} 364 365// The primary goal of the watchdog is to prevent stuck build servers 366// during development when fatal aborts lead to a cascade of failures 367// that result in a deadlock. 368class WatchDog { 369// WatchDog defines its own CHECK_PTHREAD_CALL to avoid using LOG which uses locks 370#undef CHECK_PTHREAD_CALL 371#define CHECK_WATCH_DOG_PTHREAD_CALL(call, args, what) \ 372 do { \ 373 int rc = call args; \ 374 if (rc != 0) { \ 375 errno = rc; \ 376 std::string message(# call); \ 377 message += " failed for "; \ 378 message += reason; \ 379 Fatal(message); \ 380 } \ 381 } while (false) 382 383 public: 384 explicit WatchDog(bool is_watch_dog_enabled) { 385 is_watch_dog_enabled_ = is_watch_dog_enabled; 386 if (!is_watch_dog_enabled_) { 387 return; 388 } 389 shutting_down_ = false; 390 const char* reason = "dex2oat watch dog thread startup"; 391 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_init, (&mutex_, nullptr), reason); 392 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_init, (&cond_, nullptr), reason); 393 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_init, (&attr_), reason); 394 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_create, (&pthread_, &attr_, &CallBack, this), reason); 395 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_destroy, (&attr_), reason); 396 } 397 ~WatchDog() { 398 if (!is_watch_dog_enabled_) { 399 return; 400 } 401 const char* reason = "dex2oat watch dog thread shutdown"; 402 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 403 shutting_down_ = true; 404 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_signal, (&cond_), reason); 405 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 406 407 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_join, (pthread_, nullptr), reason); 408 409 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_destroy, (&cond_), reason); 410 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_destroy, (&mutex_), reason); 411 } 412 413 private: 414 static void* CallBack(void* arg) { 415 WatchDog* self = reinterpret_cast<WatchDog*>(arg); 416 ::art::SetThreadName("dex2oat watch dog"); 417 self->Wait(); 418 return nullptr; 419 } 420 421 NO_RETURN static void Fatal(const std::string& message) { 422 // TODO: When we can guarantee it won't prevent shutdown in error cases, move to LOG. However, 423 // it's rather easy to hang in unwinding. 424 // LogLine also avoids ART logging lock issues, as it's really only a wrapper around 425 // logcat logging or stderr output. 426 LogMessage::LogLine(__FILE__, __LINE__, LogSeverity::FATAL, message.c_str()); 427 exit(1); 428 } 429 430 void Wait() { 431 // TODO: tune the multiplier for GC verification, the following is just to make the timeout 432 // large. 433 constexpr int64_t multiplier = kVerifyObjectSupport > kVerifyObjectModeFast ? 100 : 1; 434 timespec timeout_ts; 435 InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogTimeoutSeconds * 1000, 0, &timeout_ts); 436 const char* reason = "dex2oat watch dog thread waiting"; 437 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 438 while (!shutting_down_) { 439 int rc = TEMP_FAILURE_RETRY(pthread_cond_timedwait(&cond_, &mutex_, &timeout_ts)); 440 if (rc == ETIMEDOUT) { 441 Fatal(StringPrintf("dex2oat did not finish after %" PRId64 " seconds", 442 kWatchDogTimeoutSeconds)); 443 } else if (rc != 0) { 444 std::string message(StringPrintf("pthread_cond_timedwait failed: %s", 445 strerror(errno))); 446 Fatal(message.c_str()); 447 } 448 } 449 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 450 } 451 452 // When setting timeouts, keep in mind that the build server may not be as fast as your desktop. 453 // Debug builds are slower so they have larger timeouts. 454 static constexpr int64_t kSlowdownFactor = kIsDebugBuild ? 5U : 1U; 455 456 // 9.5 minutes scaled by kSlowdownFactor. This is slightly smaller than the Package Manager 457 // watchdog (PackageManagerService.WATCHDOG_TIMEOUT, 10 minutes), so that dex2oat will abort 458 // itself before that watchdog would take down the system server. 459 static constexpr int64_t kWatchDogTimeoutSeconds = kSlowdownFactor * (9 * 60 + 30); 460 461 bool is_watch_dog_enabled_; 462 bool shutting_down_; 463 // TODO: Switch to Mutex when we can guarantee it won't prevent shutdown in error cases. 464 pthread_mutex_t mutex_; 465 pthread_cond_t cond_; 466 pthread_attr_t attr_; 467 pthread_t pthread_; 468}; 469 470static constexpr size_t kMinDexFilesForSwap = 2; 471static constexpr size_t kMinDexFileCumulativeSizeForSwap = 20 * MB; 472 473static bool UseSwap(bool is_image, std::vector<const DexFile*>& dex_files) { 474 if (is_image) { 475 // Don't use swap, we know generation should succeed, and we don't want to slow it down. 476 return false; 477 } 478 if (dex_files.size() < kMinDexFilesForSwap) { 479 // If there are less dex files than the threshold, assume it's gonna be fine. 480 return false; 481 } 482 size_t dex_files_size = 0; 483 for (const auto* dex_file : dex_files) { 484 dex_files_size += dex_file->GetHeader().file_size_; 485 } 486 return dex_files_size >= kMinDexFileCumulativeSizeForSwap; 487} 488 489class Dex2Oat FINAL { 490 public: 491 explicit Dex2Oat(TimingLogger* timings) : 492 compiler_kind_(Compiler::kOptimizing), 493 instruction_set_(kRuntimeISA), 494 // Take the default set of instruction features from the build. 495 verification_results_(nullptr), 496 method_inliner_map_(), 497 runtime_(nullptr), 498 thread_count_(sysconf(_SC_NPROCESSORS_CONF)), 499 start_ns_(NanoTime()), 500 oat_fd_(-1), 501 zip_fd_(-1), 502 image_base_(0U), 503 image_classes_zip_filename_(nullptr), 504 image_classes_filename_(nullptr), 505 image_storage_mode_(ImageHeader::kStorageModeUncompressed), 506 compiled_classes_zip_filename_(nullptr), 507 compiled_classes_filename_(nullptr), 508 compiled_methods_zip_filename_(nullptr), 509 compiled_methods_filename_(nullptr), 510 app_image_(false), 511 boot_image_(false), 512 is_host_(false), 513 image_writer_(nullptr), 514 driver_(nullptr), 515 dump_stats_(false), 516 dump_passes_(false), 517 dump_timing_(false), 518 dump_slow_timing_(kIsDebugBuild), 519 dump_cfg_append_(false), 520 swap_fd_(-1), 521 app_image_fd_(kInvalidImageFd), 522 timings_(timings) {} 523 524 ~Dex2Oat() { 525 // Free opened dex files before deleting the runtime_, because ~DexFile 526 // uses MemMap, which is shut down by ~Runtime. 527 class_path_files_.clear(); 528 opened_dex_files_.clear(); 529 530 // Log completion time before deleting the runtime_, because this accesses 531 // the runtime. 532 LogCompletionTime(); 533 534 if (!kIsDebugBuild && !(RUNNING_ON_MEMORY_TOOL && kMemoryToolDetectsLeaks)) { 535 // We want to just exit on non-debug builds, not bringing the runtime down 536 // in an orderly fashion. So release the following fields. 537 driver_.release(); 538 image_writer_.release(); 539 for (std::unique_ptr<const DexFile>& dex_file : opened_dex_files_) { 540 dex_file.release(); 541 } 542 for (std::unique_ptr<File>& oat_file : oat_files_) { 543 oat_file.release(); 544 } 545 runtime_.release(); 546 verification_results_.release(); 547 key_value_store_.release(); 548 } 549 } 550 551 struct ParserOptions { 552 std::vector<const char*> oat_symbols; 553 std::string boot_image_filename; 554 bool watch_dog_enabled = true; 555 bool requested_specific_compiler = false; 556 std::string error_msg; 557 }; 558 559 void ParseZipFd(const StringPiece& option) { 560 ParseUintOption(option, "--zip-fd", &zip_fd_, Usage); 561 } 562 563 void ParseOatFd(const StringPiece& option) { 564 ParseUintOption(option, "--oat-fd", &oat_fd_, Usage); 565 } 566 567 void ParseJ(const StringPiece& option) { 568 ParseUintOption(option, "-j", &thread_count_, Usage, /* is_long_option */ false); 569 } 570 571 void ParseBase(const StringPiece& option) { 572 DCHECK(option.starts_with("--base=")); 573 const char* image_base_str = option.substr(strlen("--base=")).data(); 574 char* end; 575 image_base_ = strtoul(image_base_str, &end, 16); 576 if (end == image_base_str || *end != '\0') { 577 Usage("Failed to parse hexadecimal value for option %s", option.data()); 578 } 579 } 580 581 void ParseInstructionSet(const StringPiece& option) { 582 DCHECK(option.starts_with("--instruction-set=")); 583 StringPiece instruction_set_str = option.substr(strlen("--instruction-set=")).data(); 584 // StringPiece is not necessarily zero-terminated, so need to make a copy and ensure it. 585 std::unique_ptr<char[]> buf(new char[instruction_set_str.length() + 1]); 586 strncpy(buf.get(), instruction_set_str.data(), instruction_set_str.length()); 587 buf.get()[instruction_set_str.length()] = 0; 588 instruction_set_ = GetInstructionSetFromString(buf.get()); 589 // arm actually means thumb2. 590 if (instruction_set_ == InstructionSet::kArm) { 591 instruction_set_ = InstructionSet::kThumb2; 592 } 593 } 594 595 void ParseInstructionSetVariant(const StringPiece& option, ParserOptions* parser_options) { 596 DCHECK(option.starts_with("--instruction-set-variant=")); 597 StringPiece str = option.substr(strlen("--instruction-set-variant=")).data(); 598 instruction_set_features_.reset( 599 InstructionSetFeatures::FromVariant( 600 instruction_set_, str.as_string(), &parser_options->error_msg)); 601 if (instruction_set_features_.get() == nullptr) { 602 Usage("%s", parser_options->error_msg.c_str()); 603 } 604 } 605 606 void ParseInstructionSetFeatures(const StringPiece& option, ParserOptions* parser_options) { 607 DCHECK(option.starts_with("--instruction-set-features=")); 608 StringPiece str = option.substr(strlen("--instruction-set-features=")).data(); 609 if (instruction_set_features_.get() == nullptr) { 610 instruction_set_features_.reset( 611 InstructionSetFeatures::FromVariant( 612 instruction_set_, "default", &parser_options->error_msg)); 613 if (instruction_set_features_.get() == nullptr) { 614 Usage("Problem initializing default instruction set features variant: %s", 615 parser_options->error_msg.c_str()); 616 } 617 } 618 instruction_set_features_.reset( 619 instruction_set_features_->AddFeaturesFromString(str.as_string(), 620 &parser_options->error_msg)); 621 if (instruction_set_features_.get() == nullptr) { 622 Usage("Error parsing '%s': %s", option.data(), parser_options->error_msg.c_str()); 623 } 624 } 625 626 void ParseCompilerBackend(const StringPiece& option, ParserOptions* parser_options) { 627 DCHECK(option.starts_with("--compiler-backend=")); 628 parser_options->requested_specific_compiler = true; 629 StringPiece backend_str = option.substr(strlen("--compiler-backend=")).data(); 630 if (backend_str == "Quick") { 631 compiler_kind_ = Compiler::kQuick; 632 } else if (backend_str == "Optimizing") { 633 compiler_kind_ = Compiler::kOptimizing; 634 } else { 635 Usage("Unknown compiler backend: %s", backend_str.data()); 636 } 637 } 638 639 void ParseImageFormat(const StringPiece& option) { 640 const StringPiece substr("--image-format="); 641 DCHECK(option.starts_with(substr)); 642 const StringPiece format_str = option.substr(substr.length()); 643 if (format_str == "lz4") { 644 image_storage_mode_ = ImageHeader::kStorageModeLZ4; 645 } else if (format_str == "uncompressed") { 646 image_storage_mode_ = ImageHeader::kStorageModeUncompressed; 647 } else { 648 Usage("Unknown image format: %s", format_str.data()); 649 } 650 } 651 652 void ProcessOptions(ParserOptions* parser_options, bool multi_image) { 653 boot_image_ = !image_filenames_.empty(); 654 app_image_ = app_image_fd_ != -1 || !app_image_file_name_.empty(); 655 656 if (IsAppImage() && IsBootImage()) { 657 Usage("Can't have both --image and (--app-image-fd or --app-image-file)"); 658 } 659 660 if (IsBootImage()) { 661 // We need the boot image to always be debuggable. 662 compiler_options_->debuggable_ = true; 663 } 664 665 if (oat_filenames_.empty() && oat_fd_ == -1) { 666 Usage("Output must be supplied with either --oat-file or --oat-fd"); 667 } 668 669 if (!oat_filenames_.empty() && oat_fd_ != -1) { 670 Usage("--oat-file should not be used with --oat-fd"); 671 } 672 673 if (!parser_options->oat_symbols.empty() && oat_fd_ != -1) { 674 Usage("--oat-symbols should not be used with --oat-fd"); 675 } 676 677 if (!parser_options->oat_symbols.empty() && is_host_) { 678 Usage("--oat-symbols should not be used with --host"); 679 } 680 681 if (oat_fd_ != -1 && !image_filenames_.empty()) { 682 Usage("--oat-fd should not be used with --image"); 683 } 684 685 if (!parser_options->oat_symbols.empty() && 686 parser_options->oat_symbols.size() != oat_filenames_.size()) { 687 Usage("--oat-file arguments do not match --oat-symbols arguments"); 688 } 689 690 if (!image_filenames_.empty() && image_filenames_.size() != oat_filenames_.size()) { 691 Usage("--oat-file arguments do not match --image arguments"); 692 } 693 694 if (android_root_.empty()) { 695 const char* android_root_env_var = getenv("ANDROID_ROOT"); 696 if (android_root_env_var == nullptr) { 697 Usage("--android-root unspecified and ANDROID_ROOT not set"); 698 } 699 android_root_ += android_root_env_var; 700 } 701 702 if (!boot_image_ && parser_options->boot_image_filename.empty()) { 703 parser_options->boot_image_filename += android_root_; 704 parser_options->boot_image_filename += "/framework/boot.art"; 705 } 706 if (!parser_options->boot_image_filename.empty()) { 707 boot_image_filename_ = parser_options->boot_image_filename; 708 } 709 710 if (image_classes_filename_ != nullptr && !IsBootImage()) { 711 Usage("--image-classes should only be used with --image"); 712 } 713 714 if (image_classes_filename_ != nullptr && !boot_image_filename_.empty()) { 715 Usage("--image-classes should not be used with --boot-image"); 716 } 717 718 if (image_classes_zip_filename_ != nullptr && image_classes_filename_ == nullptr) { 719 Usage("--image-classes-zip should be used with --image-classes"); 720 } 721 722 if (compiled_classes_filename_ != nullptr && !IsBootImage()) { 723 Usage("--compiled-classes should only be used with --image"); 724 } 725 726 if (compiled_classes_filename_ != nullptr && !boot_image_filename_.empty()) { 727 Usage("--compiled-classes should not be used with --boot-image"); 728 } 729 730 if (compiled_classes_zip_filename_ != nullptr && compiled_classes_filename_ == nullptr) { 731 Usage("--compiled-classes-zip should be used with --compiled-classes"); 732 } 733 734 if (dex_filenames_.empty() && zip_fd_ == -1) { 735 Usage("Input must be supplied with either --dex-file or --zip-fd"); 736 } 737 738 if (!dex_filenames_.empty() && zip_fd_ != -1) { 739 Usage("--dex-file should not be used with --zip-fd"); 740 } 741 742 if (!dex_filenames_.empty() && !zip_location_.empty()) { 743 Usage("--dex-file should not be used with --zip-location"); 744 } 745 746 if (dex_locations_.empty()) { 747 for (const char* dex_file_name : dex_filenames_) { 748 dex_locations_.push_back(dex_file_name); 749 } 750 } else if (dex_locations_.size() != dex_filenames_.size()) { 751 Usage("--dex-location arguments do not match --dex-file arguments"); 752 } 753 754 if (!dex_filenames_.empty() && !oat_filenames_.empty()) { 755 if (oat_filenames_.size() != 1 && oat_filenames_.size() != dex_filenames_.size()) { 756 Usage("--oat-file arguments must be singular or match --dex-file arguments"); 757 } 758 } 759 760 if (zip_fd_ != -1 && zip_location_.empty()) { 761 Usage("--zip-location should be supplied with --zip-fd"); 762 } 763 764 if (boot_image_filename_.empty()) { 765 if (image_base_ == 0) { 766 Usage("Non-zero --base not specified"); 767 } 768 } 769 770 if (!parser_options->oat_symbols.empty()) { 771 oat_unstripped_ = std::move(parser_options->oat_symbols); 772 } 773 774 // If no instruction set feature was given, use the default one for the target 775 // instruction set. 776 if (instruction_set_features_.get() == nullptr) { 777 instruction_set_features_.reset( 778 InstructionSetFeatures::FromVariant( 779 instruction_set_, "default", &parser_options->error_msg)); 780 if (instruction_set_features_.get() == nullptr) { 781 Usage("Problem initializing default instruction set features variant: %s", 782 parser_options->error_msg.c_str()); 783 } 784 } 785 786 if (instruction_set_ == kRuntimeISA) { 787 std::unique_ptr<const InstructionSetFeatures> runtime_features( 788 InstructionSetFeatures::FromCppDefines()); 789 if (!instruction_set_features_->Equals(runtime_features.get())) { 790 LOG(WARNING) << "Mismatch between dex2oat instruction set features (" 791 << *instruction_set_features_ << ") and those of dex2oat executable (" 792 << *runtime_features <<") for the command line:\n" 793 << CommandLine(); 794 } 795 } 796 797 // It they are not set, use default values for inlining settings. 798 // TODO: We should rethink the compiler filter. We mostly save 799 // time here, which is orthogonal to space. 800 if (compiler_options_->inline_depth_limit_ == CompilerOptions::kUnsetInlineDepthLimit) { 801 compiler_options_->inline_depth_limit_ = 802 (compiler_options_->compiler_filter_ == CompilerOptions::kSpace) 803 // Implementation of the space filter: limit inlining depth. 804 ? CompilerOptions::kSpaceFilterInlineDepthLimit 805 : CompilerOptions::kDefaultInlineDepthLimit; 806 } 807 if (compiler_options_->inline_max_code_units_ == CompilerOptions::kUnsetInlineMaxCodeUnits) { 808 compiler_options_->inline_max_code_units_ = 809 (compiler_options_->compiler_filter_ == CompilerOptions::kSpace) 810 // Implementation of the space filter: limit inlining max code units. 811 ? CompilerOptions::kSpaceFilterInlineMaxCodeUnits 812 : CompilerOptions::kDefaultInlineMaxCodeUnits; 813 } 814 815 // Checks are all explicit until we know the architecture. 816 // Set the compilation target's implicit checks options. 817 switch (instruction_set_) { 818 case kArm: 819 case kThumb2: 820 case kArm64: 821 case kX86: 822 case kX86_64: 823 case kMips: 824 case kMips64: 825 compiler_options_->implicit_null_checks_ = true; 826 compiler_options_->implicit_so_checks_ = true; 827 break; 828 829 default: 830 // Defaults are correct. 831 break; 832 } 833 834 compiler_options_->verbose_methods_ = verbose_methods_.empty() ? nullptr : &verbose_methods_; 835 836 if (!IsBootImage() && multi_image) { 837 Usage("--multi-image can only be used when creating boot images"); 838 } 839 if (IsBootImage() && multi_image && image_filenames_.size() > 1) { 840 Usage("--multi-image cannot be used with multiple image names"); 841 } 842 843 // For now, if we're on the host and compile the boot image, *always* use multiple image files. 844 if (!kIsTargetBuild && IsBootImage()) { 845 if (image_filenames_.size() == 1) { 846 multi_image = true; 847 } 848 } 849 850 if (IsBootImage() && multi_image) { 851 // Expand the oat and image filenames. 852 std::string base_oat = oat_filenames_[0]; 853 size_t last_oat_slash = base_oat.rfind('/'); 854 if (last_oat_slash == std::string::npos) { 855 Usage("--multi-image used with unusable oat filename %s", base_oat.c_str()); 856 } 857 base_oat = base_oat.substr(0, last_oat_slash + 1); 858 859 std::string base_img = image_filenames_[0]; 860 size_t last_img_slash = base_img.rfind('/'); 861 if (last_img_slash == std::string::npos) { 862 Usage("--multi-image used with unusable image filename %s", base_img.c_str()); 863 } 864 base_img = base_img.substr(0, last_img_slash + 1); 865 866 // Now create the other names. 867 // Note: we have some special case here for our testing. We have to inject the differentiating 868 // parts for the different core images. 869 std::string infix; // Empty infix by default. 870 { 871 // Check the first name. 872 std::string dex_file = oat_filenames_[0]; 873 size_t last_dex_slash = dex_file.rfind('/'); 874 if (last_dex_slash != std::string::npos) { 875 dex_file = dex_file.substr(last_dex_slash + 1); 876 } 877 size_t last_dex_dot = dex_file.rfind('.'); 878 if (last_dex_dot != std::string::npos) { 879 dex_file = dex_file.substr(0, last_dex_dot); 880 } 881 if (StartsWith(dex_file, "core-")) { 882 infix = dex_file.substr(strlen("core")); 883 } 884 } 885 // Use a counted loop to skip the first one. 886 for (size_t i = 1; i < dex_locations_.size(); ++i) { 887 // TODO: Make everything properly std::string. 888 std::string image_name = CreateMultiImageName(dex_locations_[i], infix, ".art"); 889 char_backing_storage_.push_back(base_img + image_name); 890 image_filenames_.push_back((char_backing_storage_.end() - 1)->c_str()); 891 892 std::string oat_name = CreateMultiImageName(dex_locations_[i], infix, ".oat"); 893 char_backing_storage_.push_back(base_oat + oat_name); 894 oat_filenames_.push_back((char_backing_storage_.end() - 1)->c_str()); 895 } 896 } 897 898 // Done with usage checks, enable watchdog if requested 899 if (parser_options->watch_dog_enabled) { 900 watchdog_.reset(new WatchDog(true)); 901 } 902 903 // Fill some values into the key-value store for the oat header. 904 key_value_store_.reset(new SafeMap<std::string, std::string>()); 905 } 906 907 static std::string CreateMultiImageName(std::string in, 908 const std::string& infix, 909 const char* suffix) { 910 size_t last_dex_slash = in.rfind('/'); 911 if (last_dex_slash != std::string::npos) { 912 in = in.substr(last_dex_slash + 1); 913 } 914 if (!infix.empty()) { 915 // Inject infix. 916 size_t last_dot = in.rfind('.'); 917 if (last_dot != std::string::npos) { 918 in.insert(last_dot, infix); 919 } 920 } 921 if (EndsWith(in, ".jar")) { 922 in = in.substr(0, in.length() - strlen(".jar")) + (suffix != nullptr ? suffix : ""); 923 } 924 return in; 925 } 926 927 void InsertCompileOptions(int argc, char** argv) { 928 std::ostringstream oss; 929 for (int i = 0; i < argc; ++i) { 930 if (i > 0) { 931 oss << ' '; 932 } 933 oss << argv[i]; 934 } 935 key_value_store_->Put(OatHeader::kDex2OatCmdLineKey, oss.str()); 936 oss.str(""); // Reset. 937 oss << kRuntimeISA; 938 key_value_store_->Put(OatHeader::kDex2OatHostKey, oss.str()); 939 key_value_store_->Put( 940 OatHeader::kPicKey, 941 compiler_options_->compile_pic_ ? OatHeader::kTrueValue : OatHeader::kFalseValue); 942 key_value_store_->Put( 943 OatHeader::kDebuggableKey, 944 compiler_options_->debuggable_ ? OatHeader::kTrueValue : OatHeader::kFalseValue); 945 } 946 947 // Parse the arguments from the command line. In case of an unrecognized option or impossible 948 // values/combinations, a usage error will be displayed and exit() is called. Thus, if the method 949 // returns, arguments have been successfully parsed. 950 void ParseArgs(int argc, char** argv) { 951 original_argc = argc; 952 original_argv = argv; 953 954 InitLogging(argv); 955 956 // Skip over argv[0]. 957 argv++; 958 argc--; 959 960 if (argc == 0) { 961 Usage("No arguments specified"); 962 } 963 964 std::unique_ptr<ParserOptions> parser_options(new ParserOptions()); 965 compiler_options_.reset(new CompilerOptions()); 966 967 bool multi_image = false; 968 969 for (int i = 0; i < argc; i++) { 970 const StringPiece option(argv[i]); 971 const bool log_options = false; 972 if (log_options) { 973 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 974 } 975 if (option.starts_with("--dex-file=")) { 976 dex_filenames_.push_back(option.substr(strlen("--dex-file=")).data()); 977 } else if (option.starts_with("--dex-location=")) { 978 dex_locations_.push_back(option.substr(strlen("--dex-location=")).data()); 979 } else if (option.starts_with("--zip-fd=")) { 980 ParseZipFd(option); 981 } else if (option.starts_with("--zip-location=")) { 982 zip_location_ = option.substr(strlen("--zip-location=")).data(); 983 } else if (option.starts_with("--oat-file=")) { 984 oat_filenames_.push_back(option.substr(strlen("--oat-file=")).data()); 985 } else if (option.starts_with("--oat-symbols=")) { 986 parser_options->oat_symbols.push_back(option.substr(strlen("--oat-symbols=")).data()); 987 } else if (option.starts_with("--oat-fd=")) { 988 ParseOatFd(option); 989 } else if (option == "--watch-dog") { 990 parser_options->watch_dog_enabled = true; 991 } else if (option == "--no-watch-dog") { 992 parser_options->watch_dog_enabled = false; 993 } else if (option.starts_with("-j")) { 994 ParseJ(option); 995 } else if (option.starts_with("--oat-location=")) { 996 oat_location_ = option.substr(strlen("--oat-location=")).data(); 997 } else if (option.starts_with("--image=")) { 998 image_filenames_.push_back(option.substr(strlen("--image=")).data()); 999 } else if (option.starts_with("--image-classes=")) { 1000 image_classes_filename_ = option.substr(strlen("--image-classes=")).data(); 1001 } else if (option.starts_with("--image-classes-zip=")) { 1002 image_classes_zip_filename_ = option.substr(strlen("--image-classes-zip=")).data(); 1003 } else if (option.starts_with("--image-format=")) { 1004 ParseImageFormat(option); 1005 } else if (option.starts_with("--compiled-classes=")) { 1006 compiled_classes_filename_ = option.substr(strlen("--compiled-classes=")).data(); 1007 } else if (option.starts_with("--compiled-classes-zip=")) { 1008 compiled_classes_zip_filename_ = option.substr(strlen("--compiled-classes-zip=")).data(); 1009 } else if (option.starts_with("--compiled-methods=")) { 1010 compiled_methods_filename_ = option.substr(strlen("--compiled-methods=")).data(); 1011 } else if (option.starts_with("--compiled-methods-zip=")) { 1012 compiled_methods_zip_filename_ = option.substr(strlen("--compiled-methods-zip=")).data(); 1013 } else if (option.starts_with("--base=")) { 1014 ParseBase(option); 1015 } else if (option.starts_with("--boot-image=")) { 1016 parser_options->boot_image_filename = option.substr(strlen("--boot-image=")).data(); 1017 } else if (option.starts_with("--android-root=")) { 1018 android_root_ = option.substr(strlen("--android-root=")).data(); 1019 } else if (option.starts_with("--instruction-set=")) { 1020 ParseInstructionSet(option); 1021 } else if (option.starts_with("--instruction-set-variant=")) { 1022 ParseInstructionSetVariant(option, parser_options.get()); 1023 } else if (option.starts_with("--instruction-set-features=")) { 1024 ParseInstructionSetFeatures(option, parser_options.get()); 1025 } else if (option.starts_with("--compiler-backend=")) { 1026 ParseCompilerBackend(option, parser_options.get()); 1027 } else if (option.starts_with("--profile-file=")) { 1028 profile_file_ = option.substr(strlen("--profile-file=")).data(); 1029 VLOG(compiler) << "dex2oat: profile file is " << profile_file_; 1030 } else if (option == "--no-profile-file") { 1031 // No profile 1032 } else if (option == "--host") { 1033 is_host_ = true; 1034 } else if (option == "--runtime-arg") { 1035 if (++i >= argc) { 1036 Usage("Missing required argument for --runtime-arg"); 1037 } 1038 if (log_options) { 1039 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 1040 } 1041 runtime_args_.push_back(argv[i]); 1042 } else if (option == "--dump-timing") { 1043 dump_timing_ = true; 1044 } else if (option == "--dump-passes") { 1045 dump_passes_ = true; 1046 } else if (option.starts_with("--dump-cfg=")) { 1047 dump_cfg_file_name_ = option.substr(strlen("--dump-cfg=")).data(); 1048 } else if (option.starts_with("--dump-cfg-append")) { 1049 dump_cfg_append_ = true; 1050 } else if (option == "--dump-stats") { 1051 dump_stats_ = true; 1052 } else if (option.starts_with("--swap-file=")) { 1053 swap_file_name_ = option.substr(strlen("--swap-file=")).data(); 1054 } else if (option.starts_with("--swap-fd=")) { 1055 ParseUintOption(option, "--swap-fd", &swap_fd_, Usage); 1056 } else if (option.starts_with("--app-image-file=")) { 1057 app_image_file_name_ = option.substr(strlen("--app-image-file=")).data(); 1058 } else if (option.starts_with("--app-image-fd=")) { 1059 ParseUintOption(option, "--app-image-fd", &app_image_fd_, Usage); 1060 } else if (option.starts_with("--verbose-methods=")) { 1061 // TODO: rather than switch off compiler logging, make all VLOG(compiler) messages 1062 // conditional on having verbost methods. 1063 gLogVerbosity.compiler = false; 1064 Split(option.substr(strlen("--verbose-methods=")).ToString(), ',', &verbose_methods_); 1065 } else if (option == "--multi-image") { 1066 multi_image = true; 1067 } else if (option.starts_with("--no-inline-from=")) { 1068 no_inline_from_string_ = option.substr(strlen("--no-inline-from=")).data(); 1069 } else if (!compiler_options_->ParseCompilerOption(option, Usage)) { 1070 Usage("Unknown argument %s", option.data()); 1071 } 1072 } 1073 1074 ProcessOptions(parser_options.get(), multi_image); 1075 1076 // Insert some compiler things. 1077 InsertCompileOptions(argc, argv); 1078 } 1079 1080 // Check whether the oat output files are writable, and open them for later. Also open a swap 1081 // file, if a name is given. 1082 bool OpenFile() { 1083 bool create_file = oat_fd_ == -1; // as opposed to using open file descriptor 1084 if (create_file) { 1085 for (const char* oat_filename : oat_filenames_) { 1086 std::unique_ptr<File> oat_file(OS::CreateEmptyFile(oat_filename)); 1087 if (oat_file.get() == nullptr) { 1088 PLOG(ERROR) << "Failed to create oat file: " << oat_filename; 1089 return false; 1090 } 1091 if (create_file && fchmod(oat_file->Fd(), 0644) != 0) { 1092 PLOG(ERROR) << "Failed to make oat file world readable: " << oat_filename; 1093 oat_file->Erase(); 1094 return false; 1095 } 1096 oat_files_.push_back(std::move(oat_file)); 1097 } 1098 } else { 1099 std::unique_ptr<File> oat_file(new File(oat_fd_, oat_location_, true)); 1100 oat_file->DisableAutoClose(); 1101 if (oat_file->SetLength(0) != 0) { 1102 PLOG(WARNING) << "Truncating oat file " << oat_location_ << " failed."; 1103 } 1104 if (oat_file.get() == nullptr) { 1105 PLOG(ERROR) << "Failed to create oat file: " << oat_location_; 1106 return false; 1107 } 1108 if (create_file && fchmod(oat_file->Fd(), 0644) != 0) { 1109 PLOG(ERROR) << "Failed to make oat file world readable: " << oat_location_; 1110 oat_file->Erase(); 1111 return false; 1112 } 1113 oat_filenames_.push_back(oat_location_.c_str()); 1114 oat_files_.push_back(std::move(oat_file)); 1115 } 1116 1117 // Swap file handling. 1118 // 1119 // If the swap fd is not -1, we assume this is the file descriptor of an open but unlinked file 1120 // that we can use for swap. 1121 // 1122 // If the swap fd is -1 and we have a swap-file string, open the given file as a swap file. We 1123 // will immediately unlink to satisfy the swap fd assumption. 1124 if (swap_fd_ == -1 && !swap_file_name_.empty()) { 1125 std::unique_ptr<File> swap_file(OS::CreateEmptyFile(swap_file_name_.c_str())); 1126 if (swap_file.get() == nullptr) { 1127 PLOG(ERROR) << "Failed to create swap file: " << swap_file_name_; 1128 return false; 1129 } 1130 swap_fd_ = swap_file->Fd(); 1131 swap_file->MarkUnchecked(); // We don't we to track this, it will be unlinked immediately. 1132 swap_file->DisableAutoClose(); // We'll handle it ourselves, the File object will be 1133 // released immediately. 1134 unlink(swap_file_name_.c_str()); 1135 } 1136 return true; 1137 } 1138 1139 void EraseOatFiles() { 1140 for (size_t i = 0; i < oat_files_.size(); ++i) { 1141 DCHECK(oat_files_[i].get() != nullptr); 1142 oat_files_[i]->Erase(); 1143 oat_files_[i].reset(); 1144 } 1145 } 1146 1147 void Shutdown() { 1148 ScopedObjectAccess soa(Thread::Current()); 1149 for (jobject dex_cache : dex_caches_) { 1150 soa.Env()->DeleteLocalRef(dex_cache); 1151 } 1152 dex_caches_.clear(); 1153 } 1154 1155 // Set up the environment for compilation. Includes starting the runtime and loading/opening the 1156 // boot class path. 1157 bool Setup() { 1158 TimingLogger::ScopedTiming t("dex2oat Setup", timings_); 1159 art::MemMap::Init(); // For ZipEntry::ExtractToMemMap. 1160 1161 if (!PrepareImageClasses() || !PrepareCompiledClasses() || !PrepareCompiledMethods()) { 1162 return false; 1163 } 1164 1165 verification_results_.reset(new VerificationResults(compiler_options_.get())); 1166 callbacks_.reset(new QuickCompilerCallbacks( 1167 verification_results_.get(), 1168 &method_inliner_map_, 1169 IsBootImage() ? 1170 CompilerCallbacks::CallbackMode::kCompileBootImage : 1171 CompilerCallbacks::CallbackMode::kCompileApp)); 1172 1173 RuntimeArgumentMap runtime_options; 1174 if (!PrepareRuntimeOptions(&runtime_options)) { 1175 return false; 1176 } 1177 1178 { 1179 TimingLogger::ScopedTiming t_runtime("Create runtime", timings_); 1180 if (!CreateRuntime(std::move(runtime_options))) { 1181 return false; 1182 } 1183 } 1184 1185 // Runtime::Create acquired the mutator_lock_ that is normally given away when we 1186 // Runtime::Start, give it away now so that we don't starve GC. 1187 Thread* self = Thread::Current(); 1188 self->TransitionFromRunnableToSuspended(kNative); 1189 // If we're doing the image, override the compiler filter to force full compilation. Must be 1190 // done ahead of WellKnownClasses::Init that causes verification. Note: doesn't force 1191 // compilation of class initializers. 1192 // Whilst we're in native take the opportunity to initialize well known classes. 1193 WellKnownClasses::Init(self->GetJniEnv()); 1194 1195 ClassLinker* const class_linker = Runtime::Current()->GetClassLinker(); 1196 if (boot_image_filename_.empty()) { 1197 dex_files_ = class_linker->GetBootClassPath(); 1198 } else { 1199 TimingLogger::ScopedTiming t_dex("Opening dex files", timings_); 1200 if (dex_filenames_.empty()) { 1201 ATRACE_BEGIN("Opening zip archive from file descriptor"); 1202 std::string error_msg; 1203 std::unique_ptr<ZipArchive> zip_archive(ZipArchive::OpenFromFd(zip_fd_, 1204 zip_location_.c_str(), 1205 &error_msg)); 1206 if (zip_archive.get() == nullptr) { 1207 LOG(ERROR) << "Failed to open zip from file descriptor for '" << zip_location_ << "': " 1208 << error_msg; 1209 return false; 1210 } 1211 if (!DexFile::OpenFromZip(*zip_archive.get(), zip_location_, &error_msg, &opened_dex_files_)) { 1212 LOG(ERROR) << "Failed to open dex from file descriptor for zip file '" << zip_location_ 1213 << "': " << error_msg; 1214 return false; 1215 } 1216 for (auto& dex_file : opened_dex_files_) { 1217 dex_files_.push_back(dex_file.get()); 1218 } 1219 ATRACE_END(); 1220 } else { 1221 size_t failure_count = OpenDexFiles(dex_filenames_, dex_locations_, &opened_dex_files_); 1222 if (failure_count > 0) { 1223 LOG(ERROR) << "Failed to open some dex files: " << failure_count; 1224 return false; 1225 } 1226 for (auto& dex_file : opened_dex_files_) { 1227 dex_files_.push_back(dex_file.get()); 1228 } 1229 } 1230 1231 constexpr bool kSaveDexInput = false; 1232 if (kSaveDexInput) { 1233 SaveDexInput(); 1234 } 1235 } 1236 // Ensure opened dex files are writable for dex-to-dex transformations. Also ensure that 1237 // the dex caches stay live since we don't want class unloading to occur during compilation. 1238 for (const auto& dex_file : dex_files_) { 1239 if (!dex_file->EnableWrite()) { 1240 PLOG(ERROR) << "Failed to make .dex file writeable '" << dex_file->GetLocation() << "'\n"; 1241 } 1242 ScopedObjectAccess soa(self); 1243 dex_caches_.push_back(soa.AddLocalReference<jobject>( 1244 class_linker->RegisterDexFile(*dex_file, Runtime::Current()->GetLinearAlloc()))); 1245 dex_file->CreateTypeLookupTable(); 1246 } 1247 1248 // If we use a swap file, ensure we are above the threshold to make it necessary. 1249 if (swap_fd_ != -1) { 1250 if (!UseSwap(IsBootImage(), dex_files_)) { 1251 close(swap_fd_); 1252 swap_fd_ = -1; 1253 VLOG(compiler) << "Decided to run without swap."; 1254 } else { 1255 LOG(INFO) << "Large app, accepted running with swap."; 1256 } 1257 } 1258 // Note that dex2oat won't close the swap_fd_. The compiler driver's swap space will do that. 1259 1260 /* 1261 * If we're not in interpret-only or verify-none mode, go ahead and compile small applications. 1262 * Don't bother to check if we're doing the image. 1263 */ 1264 if (!IsBootImage() && 1265 compiler_options_->IsCompilationEnabled() && 1266 compiler_kind_ == Compiler::kQuick) { 1267 size_t num_methods = 0; 1268 for (size_t i = 0; i != dex_files_.size(); ++i) { 1269 const DexFile* dex_file = dex_files_[i]; 1270 CHECK(dex_file != nullptr); 1271 num_methods += dex_file->NumMethodIds(); 1272 } 1273 if (num_methods <= compiler_options_->GetNumDexMethodsThreshold()) { 1274 compiler_options_->SetCompilerFilter(CompilerOptions::kSpeed); 1275 VLOG(compiler) << "Below method threshold, compiling anyways"; 1276 } 1277 } 1278 1279 // Organize inputs, handling multi-dex and multiple oat file outputs. 1280 CreateDexOatMappings(); 1281 1282 return true; 1283 } 1284 1285 void CreateDexOatMappings() { 1286 if (oat_files_.size() > 1) { 1287 size_t index = 0; 1288 for (size_t i = 0; i < oat_files_.size(); ++i) { 1289 std::vector<const DexFile*> dex_files = { 1, dex_files_[index] }; 1290 dex_file_oat_filename_map_.emplace(dex_files_[index], oat_filenames_[i]); 1291 index++; 1292 while (index < dex_files_.size() && 1293 (dex_files_[index]->GetBaseLocation() == dex_files_[index - 1]->GetBaseLocation())) { 1294 dex_file_oat_filename_map_.emplace(dex_files_[index], oat_filenames_[i]); 1295 dex_files.push_back(dex_files_[index]); 1296 index++; 1297 } 1298 dex_files_per_oat_file_.push_back(std::move(dex_files)); 1299 } 1300 } else { 1301 dex_files_per_oat_file_.push_back(dex_files_); 1302 for (const DexFile* dex_file : dex_files_) { 1303 dex_file_oat_filename_map_.emplace(dex_file, oat_filenames_[0]); 1304 } 1305 } 1306 } 1307 1308 // Create and invoke the compiler driver. This will compile all the dex files. 1309 void Compile() { 1310 TimingLogger::ScopedTiming t("dex2oat Compile", timings_); 1311 compiler_phases_timings_.reset(new CumulativeLogger("compilation times")); 1312 1313 // Handle and ClassLoader creation needs to come after Runtime::Create 1314 jobject class_loader = nullptr; 1315 jobject class_path_class_loader = nullptr; 1316 Thread* self = Thread::Current(); 1317 1318 if (!boot_image_filename_.empty()) { 1319 ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 1320 OpenClassPathFiles(runtime_->GetClassPathString(), dex_files_, &class_path_files_); 1321 ScopedObjectAccess soa(self); 1322 1323 // Classpath: first the class-path given. 1324 std::vector<const DexFile*> class_path_files = MakeNonOwningPointerVector(class_path_files_); 1325 1326 // Store the classpath we have right now. 1327 key_value_store_->Put(OatHeader::kClassPathKey, 1328 OatFile::EncodeDexFileDependencies(class_path_files)); 1329 1330 class_path_class_loader = class_linker->CreatePathClassLoader(self, 1331 class_path_files, 1332 nullptr); 1333 1334 // Class path loader as parent so that we'll resolve there first. 1335 class_loader = class_linker->CreatePathClassLoader(self, dex_files_, class_path_class_loader); 1336 } 1337 1338 // Find the dex file we should not inline from. 1339 1340 // For now, on the host always have core-oj removed. 1341 if (!kIsTargetBuild && no_inline_from_string_.empty()) { 1342 no_inline_from_string_ = "core-oj"; 1343 } 1344 1345 if (!no_inline_from_string_.empty()) { 1346 ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 1347 std::vector<const DexFile*> class_path_files = MakeNonOwningPointerVector(class_path_files_); 1348 std::vector<const std::vector<const DexFile*>*> dex_file_vectors = { 1349 &class_linker->GetBootClassPath(), 1350 &class_path_files, 1351 &dex_files_ 1352 }; 1353 for (const std::vector<const DexFile*>* dex_file_vector : dex_file_vectors) { 1354 if (dex_file_vector == nullptr) { 1355 continue; 1356 } 1357 1358 bool found = false; 1359 1360 for (const DexFile* dex_file : *dex_file_vector) { 1361 // Try the complete location first. 1362 found = no_inline_from_string_ == dex_file->GetLocation(); 1363 // The try just the name. 1364 if (!found) { 1365 size_t last_slash = dex_file->GetLocation().rfind('/'); 1366 if (last_slash != std::string::npos) { 1367 found = StartsWith(dex_file->GetLocation().substr(last_slash + 1), 1368 no_inline_from_string_.c_str()); 1369 } 1370 } 1371 1372 if (found) { 1373 VLOG(compiler) << "Disabling inlining from " << dex_file->GetLocation(); 1374 compiler_options_->no_inline_from_ = dex_file; 1375 break; 1376 } 1377 } 1378 1379 if (found) { 1380 break; 1381 } 1382 } 1383 } 1384 1385 if (IsBootImage() && image_filenames_.size() > 1) { 1386 // If we're compiling the boot image, store the boot classpath into the Key-Value store. If 1387 // the image filename was adapted (e.g., for our tests), we need to change this here, too. We 1388 // need this for the multi-image case. 1389 std::ostringstream bootcp_oss; 1390 bool first_bootcp = true; 1391 for (size_t i = 0; i < dex_locations_.size(); ++i) { 1392 if (!first_bootcp) { 1393 bootcp_oss << ":"; 1394 } 1395 1396 std::string dex_loc = dex_locations_[i]; 1397 std::string image_filename = image_filenames_[i]; 1398 1399 // Use the dex_loc path, but the image_filename name. 1400 size_t dex_last_slash = dex_loc.rfind('/'); 1401 size_t image_last_slash = image_filename.rfind('/'); 1402 if (dex_last_slash == std::string::npos) { 1403 dex_loc = image_filename.substr(image_last_slash + 1); 1404 } else { 1405 dex_loc = dex_loc.substr(0, dex_last_slash + 1) + 1406 image_filename.substr(image_last_slash + 1); 1407 } 1408 1409 // Image filenames already end with .art, no need to replace. 1410 1411 bootcp_oss << dex_loc; 1412 first_bootcp = false; 1413 } 1414 key_value_store_->Put(OatHeader::kBootClassPath, bootcp_oss.str()); 1415 } 1416 1417 driver_.reset(new CompilerDriver(compiler_options_.get(), 1418 verification_results_.get(), 1419 &method_inliner_map_, 1420 compiler_kind_, 1421 instruction_set_, 1422 instruction_set_features_.get(), 1423 IsBootImage(), 1424 image_classes_.release(), 1425 compiled_classes_.release(), 1426 nullptr, 1427 thread_count_, 1428 dump_stats_, 1429 dump_passes_, 1430 dump_cfg_file_name_, 1431 dump_cfg_append_, 1432 compiler_phases_timings_.get(), 1433 swap_fd_, 1434 profile_file_, 1435 &dex_file_oat_filename_map_)); 1436 1437 driver_->SetDexFilesForOatFile(dex_files_); 1438 driver_->CompileAll(class_loader, dex_files_, timings_); 1439 } 1440 1441 // TODO: Update comments about how this works for multi image. b/26317072 1442 // Notes on the interleaving of creating the image and oat file to 1443 // ensure the references between the two are correct. 1444 // 1445 // Currently we have a memory layout that looks something like this: 1446 // 1447 // +--------------+ 1448 // | image | 1449 // +--------------+ 1450 // | boot oat | 1451 // +--------------+ 1452 // | alloc spaces | 1453 // +--------------+ 1454 // 1455 // There are several constraints on the loading of the image and boot.oat. 1456 // 1457 // 1. The image is expected to be loaded at an absolute address and 1458 // contains Objects with absolute pointers within the image. 1459 // 1460 // 2. There are absolute pointers from Methods in the image to their 1461 // code in the oat. 1462 // 1463 // 3. There are absolute pointers from the code in the oat to Methods 1464 // in the image. 1465 // 1466 // 4. There are absolute pointers from code in the oat to other code 1467 // in the oat. 1468 // 1469 // To get this all correct, we go through several steps. 1470 // 1471 // 1. We prepare offsets for all data in the oat file and calculate 1472 // the oat data size and code size. During this stage, we also set 1473 // oat code offsets in methods for use by the image writer. 1474 // 1475 // 2. We prepare offsets for the objects in the image and calculate 1476 // the image size. 1477 // 1478 // 3. We create the oat file. Originally this was just our own proprietary 1479 // file but now it is contained within an ELF dynamic object (aka an .so 1480 // file). Since we know the image size and oat data size and code size we 1481 // can prepare the ELF headers and we then know the ELF memory segment 1482 // layout and we can now resolve all references. The compiler provides 1483 // LinkerPatch information in each CompiledMethod and we resolve these, 1484 // using the layout information and image object locations provided by 1485 // image writer, as we're writing the method code. 1486 // 1487 // 4. We create the image file. It needs to know where the oat file 1488 // will be loaded after itself. Originally when oat file was simply 1489 // memory mapped so we could predict where its contents were based 1490 // on the file size. Now that it is an ELF file, we need to inspect 1491 // the ELF file to understand the in memory segment layout including 1492 // where the oat header is located within. 1493 // TODO: We could just remember this information from step 3. 1494 // 1495 // 5. We fixup the ELF program headers so that dlopen will try to 1496 // load the .so at the desired location at runtime by offsetting the 1497 // Elf32_Phdr.p_vaddr values by the desired base address. 1498 // TODO: Do this in step 3. We already know the layout there. 1499 // 1500 // Steps 1.-3. are done by the CreateOatFile() above, steps 4.-5. 1501 // are done by the CreateImageFile() below. 1502 1503 // Write out the generated code part. Calls the OatWriter and ElfBuilder. Also prepares the 1504 // ImageWriter, if necessary. 1505 // Note: Flushing (and closing) the file is the caller's responsibility, except for the failure 1506 // case (when the file will be explicitly erased). 1507 bool CreateOatFiles() { 1508 CHECK(key_value_store_.get() != nullptr); 1509 1510 TimingLogger::ScopedTiming t("dex2oat Oat", timings_); 1511 1512 std::vector<std::unique_ptr<OatWriter>> oat_writers; 1513 { 1514 TimingLogger::ScopedTiming t2("dex2oat OatWriter", timings_); 1515 std::string image_file_location; 1516 uint32_t image_file_location_oat_checksum = 0; 1517 uintptr_t image_file_location_oat_data_begin = 0; 1518 int32_t image_patch_delta = 0; 1519 1520 if (app_image_ && image_base_ == 0) { 1521 std::vector<gc::space::ImageSpace*> image_spaces = 1522 Runtime::Current()->GetHeap()->GetBootImageSpaces(); 1523 for (gc::space::ImageSpace* image_space : image_spaces) { 1524 // TODO: IS THIS IN ORDER? JUST TAKE THE LAST ONE? 1525 image_base_ = std::max(image_base_, RoundUp( 1526 reinterpret_cast<uintptr_t>(image_space->GetImageHeader().GetOatFileEnd()), 1527 kPageSize)); 1528 } 1529 VLOG(compiler) << "App image base=" << reinterpret_cast<void*>(image_base_); 1530 } 1531 1532 if (IsImage()) { 1533 PrepareImageWriter(image_base_); 1534 } 1535 1536 if (!IsBootImage()) { 1537 TimingLogger::ScopedTiming t3("Loading image checksum", timings_); 1538 std::vector<gc::space::ImageSpace*> image_spaces = 1539 Runtime::Current()->GetHeap()->GetBootImageSpaces(); 1540 image_file_location_oat_checksum = image_spaces[0]->GetImageHeader().GetOatChecksum(); 1541 image_file_location_oat_data_begin = 1542 reinterpret_cast<uintptr_t>(image_spaces[0]->GetImageHeader().GetOatDataBegin()); 1543 image_patch_delta = image_spaces[0]->GetImageHeader().GetPatchDelta(); 1544 std::vector<std::string> image_filenames; 1545 for (const gc::space::ImageSpace* image_space : image_spaces) { 1546 image_filenames.push_back(image_space->GetImageFilename()); 1547 } 1548 image_file_location = Join(image_filenames, ':'); 1549 } 1550 1551 if (!image_file_location.empty()) { 1552 key_value_store_->Put(OatHeader::kImageLocationKey, image_file_location); 1553 } 1554 1555 for (size_t i = 0; i < oat_files_.size(); ++i) { 1556 std::vector<const DexFile*>& dex_files = dex_files_per_oat_file_[i]; 1557 std::unique_ptr<OatWriter> oat_writer(new OatWriter(dex_files, 1558 image_file_location_oat_checksum, 1559 image_file_location_oat_data_begin, 1560 image_patch_delta, 1561 driver_.get(), 1562 image_writer_.get(), 1563 IsBootImage(), 1564 timings_, 1565 key_value_store_.get())); 1566 oat_writers.push_back(std::move(oat_writer)); 1567 } 1568 } 1569 1570 if (IsImage()) { 1571 // The OatWriter constructor has already updated offsets in methods and we need to 1572 // prepare method offsets in the image address space for direct method patching. 1573 TimingLogger::ScopedTiming t2("dex2oat Prepare image address space", timings_); 1574 if (!image_writer_->PrepareImageAddressSpace()) { 1575 LOG(ERROR) << "Failed to prepare image address space."; 1576 return false; 1577 } 1578 } 1579 1580 { 1581 TimingLogger::ScopedTiming t2("dex2oat Write ELF", timings_); 1582 for (size_t i = 0; i < oat_files_.size(); ++i) { 1583 std::unique_ptr<File>& oat_file = oat_files_[i]; 1584 std::unique_ptr<OatWriter>& oat_writer = oat_writers[i]; 1585 std::unique_ptr<ElfWriter> elf_writer = 1586 CreateElfWriterQuick(instruction_set_, compiler_options_.get(), oat_file.get()); 1587 1588 elf_writer->Start(); 1589 1590 OutputStream* rodata = elf_writer->StartRoData(); 1591 if (!oat_writer->WriteRodata(rodata)) { 1592 LOG(ERROR) << "Failed to write .rodata section to the ELF file " << oat_file->GetPath(); 1593 return false; 1594 } 1595 elf_writer->EndRoData(rodata); 1596 1597 OutputStream* text = elf_writer->StartText(); 1598 if (!oat_writer->WriteCode(text)) { 1599 LOG(ERROR) << "Failed to write .text section to the ELF file " << oat_file->GetPath(); 1600 return false; 1601 } 1602 elf_writer->EndText(text); 1603 1604 elf_writer->SetBssSize(oat_writer->GetBssSize()); 1605 elf_writer->WriteDynamicSection(); 1606 elf_writer->WriteDebugInfo(oat_writer->GetMethodDebugInfo()); 1607 elf_writer->WritePatchLocations(oat_writer->GetAbsolutePatchLocations()); 1608 1609 if (!elf_writer->End()) { 1610 LOG(ERROR) << "Failed to write ELF file " << oat_file->GetPath(); 1611 return false; 1612 } 1613 1614 // Flush the oat file. 1615 if (oat_files_[i] != nullptr) { 1616 if (oat_files_[i]->Flush() != 0) { 1617 PLOG(ERROR) << "Failed to flush oat file: " << oat_filenames_[i]; 1618 oat_files_[i]->Erase(); 1619 return false; 1620 } 1621 } 1622 1623 if (IsImage()) { 1624 // Update oat estimates. 1625 UpdateImageWriter(i); 1626 } 1627 1628 VLOG(compiler) << "Oat file written successfully: " << oat_filenames_[i]; 1629 } 1630 } 1631 1632 return true; 1633 } 1634 1635 // If we are compiling an image, invoke the image creation routine. Else just skip. 1636 bool HandleImage() { 1637 if (IsImage()) { 1638 TimingLogger::ScopedTiming t("dex2oat ImageWriter", timings_); 1639 if (!CreateImageFile()) { 1640 return false; 1641 } 1642 VLOG(compiler) << "Images written successfully"; 1643 } 1644 return true; 1645 } 1646 1647 // Create a copy from stripped to unstripped. 1648 bool CopyStrippedToUnstripped() { 1649 for (size_t i = 0; i < oat_unstripped_.size(); ++i) { 1650 // If we don't want to strip in place, copy from stripped location to unstripped location. 1651 // We need to strip after image creation because FixupElf needs to use .strtab. 1652 if (strcmp(oat_unstripped_[i], oat_filenames_[i]) != 0) { 1653 // If the oat file is still open, flush it. 1654 if (oat_files_[i].get() != nullptr && oat_files_[i]->IsOpened()) { 1655 if (!FlushCloseOatFile(i)) { 1656 return false; 1657 } 1658 } 1659 1660 TimingLogger::ScopedTiming t("dex2oat OatFile copy", timings_); 1661 std::unique_ptr<File> in(OS::OpenFileForReading(oat_filenames_[i])); 1662 std::unique_ptr<File> out(OS::CreateEmptyFile(oat_unstripped_[i])); 1663 size_t buffer_size = 8192; 1664 std::unique_ptr<uint8_t[]> buffer(new uint8_t[buffer_size]); 1665 while (true) { 1666 int bytes_read = TEMP_FAILURE_RETRY(read(in->Fd(), buffer.get(), buffer_size)); 1667 if (bytes_read <= 0) { 1668 break; 1669 } 1670 bool write_ok = out->WriteFully(buffer.get(), bytes_read); 1671 CHECK(write_ok); 1672 } 1673 if (out->FlushCloseOrErase() != 0) { 1674 PLOG(ERROR) << "Failed to flush and close copied oat file: " << oat_unstripped_[i]; 1675 return false; 1676 } 1677 VLOG(compiler) << "Oat file copied successfully (unstripped): " << oat_unstripped_[i]; 1678 } 1679 } 1680 return true; 1681 } 1682 1683 bool FlushOatFiles() { 1684 TimingLogger::ScopedTiming t2("dex2oat Flush ELF", timings_); 1685 for (size_t i = 0; i < oat_files_.size(); ++i) { 1686 if (oat_files_[i].get() != nullptr) { 1687 if (oat_files_[i]->Flush() != 0) { 1688 PLOG(ERROR) << "Failed to flush oat file: " << oat_filenames_[i]; 1689 oat_files_[i]->Erase(); 1690 return false; 1691 } 1692 } 1693 } 1694 return true; 1695 } 1696 1697 bool FlushCloseOatFile(size_t i) { 1698 if (oat_files_[i].get() != nullptr) { 1699 std::unique_ptr<File> tmp(oat_files_[i].release()); 1700 if (tmp->FlushCloseOrErase() != 0) { 1701 PLOG(ERROR) << "Failed to flush and close oat file: " << oat_filenames_[i]; 1702 return false; 1703 } 1704 } 1705 return true; 1706 } 1707 1708 bool FlushCloseOatFiles() { 1709 bool result = true; 1710 for (size_t i = 0; i < oat_files_.size(); ++i) { 1711 result &= FlushCloseOatFile(i); 1712 } 1713 return result; 1714 } 1715 1716 void DumpTiming() { 1717 if (dump_timing_ || (dump_slow_timing_ && timings_->GetTotalNs() > MsToNs(1000))) { 1718 LOG(INFO) << Dumpable<TimingLogger>(*timings_); 1719 } 1720 if (dump_passes_) { 1721 LOG(INFO) << Dumpable<CumulativeLogger>(*driver_->GetTimingsLogger()); 1722 } 1723 } 1724 1725 CompilerOptions* GetCompilerOptions() const { 1726 return compiler_options_.get(); 1727 } 1728 1729 bool IsImage() const { 1730 return IsAppImage() || IsBootImage(); 1731 } 1732 1733 bool IsAppImage() const { 1734 return app_image_; 1735 } 1736 1737 bool IsBootImage() const { 1738 return boot_image_; 1739 } 1740 1741 bool IsHost() const { 1742 return is_host_; 1743 } 1744 1745 private: 1746 template <typename T> 1747 static std::vector<T*> MakeNonOwningPointerVector(const std::vector<std::unique_ptr<T>>& src) { 1748 std::vector<T*> result; 1749 result.reserve(src.size()); 1750 for (const std::unique_ptr<T>& t : src) { 1751 result.push_back(t.get()); 1752 } 1753 return result; 1754 } 1755 1756 static size_t OpenDexFiles(const std::vector<const char*>& dex_filenames, 1757 const std::vector<const char*>& dex_locations, 1758 std::vector<std::unique_ptr<const DexFile>>* dex_files) { 1759 DCHECK(dex_files != nullptr) << "OpenDexFiles out-param is nullptr"; 1760 size_t failure_count = 0; 1761 for (size_t i = 0; i < dex_filenames.size(); i++) { 1762 const char* dex_filename = dex_filenames[i]; 1763 const char* dex_location = dex_locations[i]; 1764 ATRACE_BEGIN(StringPrintf("Opening dex file '%s'", dex_filenames[i]).c_str()); 1765 std::string error_msg; 1766 if (!OS::FileExists(dex_filename)) { 1767 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 1768 continue; 1769 } 1770 if (!DexFile::Open(dex_filename, dex_location, &error_msg, dex_files)) { 1771 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 1772 ++failure_count; 1773 } 1774 ATRACE_END(); 1775 } 1776 return failure_count; 1777 } 1778 1779 // Returns true if dex_files has a dex with the named location. We compare canonical locations, 1780 // so that relative and absolute paths will match. Not caching for the dex_files isn't very 1781 // efficient, but under normal circumstances the list is neither large nor is this part too 1782 // sensitive. 1783 static bool DexFilesContains(const std::vector<const DexFile*>& dex_files, 1784 const std::string& location) { 1785 std::string canonical_location(DexFile::GetDexCanonicalLocation(location.c_str())); 1786 for (size_t i = 0; i < dex_files.size(); ++i) { 1787 if (DexFile::GetDexCanonicalLocation(dex_files[i]->GetLocation().c_str()) == 1788 canonical_location) { 1789 return true; 1790 } 1791 } 1792 return false; 1793 } 1794 1795 // Appends to opened_dex_files any elements of class_path that dex_files 1796 // doesn't already contain. This will open those dex files as necessary. 1797 static void OpenClassPathFiles(const std::string& class_path, 1798 std::vector<const DexFile*> dex_files, 1799 std::vector<std::unique_ptr<const DexFile>>* opened_dex_files) { 1800 DCHECK(opened_dex_files != nullptr) << "OpenClassPathFiles out-param is nullptr"; 1801 std::vector<std::string> parsed; 1802 Split(class_path, ':', &parsed); 1803 // Take Locks::mutator_lock_ so that lock ordering on the ClassLinker::dex_lock_ is maintained. 1804 ScopedObjectAccess soa(Thread::Current()); 1805 for (size_t i = 0; i < parsed.size(); ++i) { 1806 if (DexFilesContains(dex_files, parsed[i])) { 1807 continue; 1808 } 1809 std::string error_msg; 1810 if (!DexFile::Open(parsed[i].c_str(), parsed[i].c_str(), &error_msg, opened_dex_files)) { 1811 LOG(WARNING) << "Failed to open dex file '" << parsed[i] << "': " << error_msg; 1812 } 1813 } 1814 } 1815 1816 bool PrepareImageClasses() { 1817 // If --image-classes was specified, calculate the full list of classes to include in the image. 1818 if (image_classes_filename_ != nullptr) { 1819 image_classes_ = 1820 ReadClasses(image_classes_zip_filename_, image_classes_filename_, "image"); 1821 if (image_classes_ == nullptr) { 1822 return false; 1823 } 1824 } else if (IsBootImage()) { 1825 image_classes_.reset(new std::unordered_set<std::string>); 1826 } 1827 return true; 1828 } 1829 1830 bool PrepareCompiledClasses() { 1831 // If --compiled-classes was specified, calculate the full list of classes to compile in the 1832 // image. 1833 if (compiled_classes_filename_ != nullptr) { 1834 compiled_classes_ = 1835 ReadClasses(compiled_classes_zip_filename_, compiled_classes_filename_, "compiled"); 1836 if (compiled_classes_ == nullptr) { 1837 return false; 1838 } 1839 } else { 1840 compiled_classes_.reset(nullptr); // By default compile everything. 1841 } 1842 return true; 1843 } 1844 1845 static std::unique_ptr<std::unordered_set<std::string>> ReadClasses(const char* zip_filename, 1846 const char* classes_filename, 1847 const char* tag) { 1848 std::unique_ptr<std::unordered_set<std::string>> classes; 1849 std::string error_msg; 1850 if (zip_filename != nullptr) { 1851 classes.reset(ReadImageClassesFromZip(zip_filename, classes_filename, &error_msg)); 1852 } else { 1853 classes.reset(ReadImageClassesFromFile(classes_filename)); 1854 } 1855 if (classes == nullptr) { 1856 LOG(ERROR) << "Failed to create list of " << tag << " classes from '" 1857 << classes_filename << "': " << error_msg; 1858 } 1859 return classes; 1860 } 1861 1862 bool PrepareCompiledMethods() { 1863 // If --compiled-methods was specified, read the methods to compile from the given file(s). 1864 if (compiled_methods_filename_ != nullptr) { 1865 std::string error_msg; 1866 if (compiled_methods_zip_filename_ != nullptr) { 1867 compiled_methods_.reset(ReadCommentedInputFromZip(compiled_methods_zip_filename_, 1868 compiled_methods_filename_, 1869 nullptr, // No post-processing. 1870 &error_msg)); 1871 } else { 1872 compiled_methods_.reset(ReadCommentedInputFromFile(compiled_methods_filename_, 1873 nullptr)); // No post-processing. 1874 } 1875 if (compiled_methods_.get() == nullptr) { 1876 LOG(ERROR) << "Failed to create list of compiled methods from '" 1877 << compiled_methods_filename_ << "': " << error_msg; 1878 return false; 1879 } 1880 } else { 1881 compiled_methods_.reset(nullptr); // By default compile everything. 1882 } 1883 return true; 1884 } 1885 1886 void SaveDexInput() { 1887 for (size_t i = 0; i < dex_files_.size(); ++i) { 1888 const DexFile* dex_file = dex_files_[i]; 1889 std::string tmp_file_name(StringPrintf("/data/local/tmp/dex2oat.%d.%zd.dex", 1890 getpid(), i)); 1891 std::unique_ptr<File> tmp_file(OS::CreateEmptyFile(tmp_file_name.c_str())); 1892 if (tmp_file.get() == nullptr) { 1893 PLOG(ERROR) << "Failed to open file " << tmp_file_name 1894 << ". Try: adb shell chmod 777 /data/local/tmp"; 1895 continue; 1896 } 1897 // This is just dumping files for debugging. Ignore errors, and leave remnants. 1898 UNUSED(tmp_file->WriteFully(dex_file->Begin(), dex_file->Size())); 1899 UNUSED(tmp_file->Flush()); 1900 UNUSED(tmp_file->Close()); 1901 LOG(INFO) << "Wrote input to " << tmp_file_name; 1902 } 1903 } 1904 1905 bool PrepareRuntimeOptions(RuntimeArgumentMap* runtime_options) { 1906 RuntimeOptions raw_options; 1907 if (boot_image_filename_.empty()) { 1908 std::string boot_class_path = "-Xbootclasspath:"; 1909 boot_class_path += Join(dex_filenames_, ':'); 1910 raw_options.push_back(std::make_pair(boot_class_path, nullptr)); 1911 std::string boot_class_path_locations = "-Xbootclasspath-locations:"; 1912 boot_class_path_locations += Join(dex_locations_, ':'); 1913 raw_options.push_back(std::make_pair(boot_class_path_locations, nullptr)); 1914 } else { 1915 std::string boot_image_option = "-Ximage:"; 1916 boot_image_option += boot_image_filename_; 1917 raw_options.push_back(std::make_pair(boot_image_option, nullptr)); 1918 } 1919 for (size_t i = 0; i < runtime_args_.size(); i++) { 1920 raw_options.push_back(std::make_pair(runtime_args_[i], nullptr)); 1921 } 1922 1923 raw_options.push_back(std::make_pair("compilercallbacks", callbacks_.get())); 1924 raw_options.push_back( 1925 std::make_pair("imageinstructionset", GetInstructionSetString(instruction_set_))); 1926 1927 // Only allow no boot image for the runtime if we're compiling one. When we compile an app, 1928 // we don't want fallback mode, it will abort as we do not push a boot classpath (it might 1929 // have been stripped in preopting, anyways). 1930 if (!IsBootImage()) { 1931 raw_options.push_back(std::make_pair("-Xno-dex-file-fallback", nullptr)); 1932 } 1933 // Disable libsigchain. We don't don't need it during compilation and it prevents us 1934 // from getting a statically linked version of dex2oat (because of dlsym and RTLD_NEXT). 1935 raw_options.push_back(std::make_pair("-Xno-sig-chain", nullptr)); 1936 1937 if (!Runtime::ParseOptions(raw_options, false, runtime_options)) { 1938 LOG(ERROR) << "Failed to parse runtime options"; 1939 return false; 1940 } 1941 return true; 1942 } 1943 1944 // Create a runtime necessary for compilation. 1945 bool CreateRuntime(RuntimeArgumentMap&& runtime_options) 1946 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_) { 1947 if (!Runtime::Create(std::move(runtime_options))) { 1948 LOG(ERROR) << "Failed to create runtime"; 1949 return false; 1950 } 1951 runtime_.reset(Runtime::Current()); 1952 runtime_->SetInstructionSet(instruction_set_); 1953 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 1954 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 1955 if (!runtime_->HasCalleeSaveMethod(type)) { 1956 runtime_->SetCalleeSaveMethod(runtime_->CreateCalleeSaveMethod(), type); 1957 } 1958 } 1959 runtime_->GetClassLinker()->FixupDexCaches(runtime_->GetResolutionMethod()); 1960 1961 // Initialize maps for unstarted runtime. This needs to be here, as running clinits needs this 1962 // set up. 1963 interpreter::UnstartedRuntime::Initialize(); 1964 1965 runtime_->GetClassLinker()->RunRootClinits(); 1966 1967 return true; 1968 } 1969 1970 void PrepareImageWriter(uintptr_t image_base) { 1971 DCHECK(IsImage()); 1972 image_writer_.reset(new ImageWriter(*driver_, 1973 image_base, 1974 compiler_options_->GetCompilePic(), 1975 IsAppImage(), 1976 image_storage_mode_, 1977 oat_filenames_, 1978 dex_file_oat_filename_map_)); 1979 } 1980 1981 // Let the ImageWriter write the image files. If we do not compile PIC, also fix up the oat files. 1982 bool CreateImageFile() 1983 REQUIRES(!Locks::mutator_lock_) { 1984 CHECK(image_writer_ != nullptr); 1985 if (!IsBootImage()) { 1986 image_filenames_.push_back(app_image_file_name_.c_str()); 1987 } 1988 if (!image_writer_->Write(app_image_fd_, image_filenames_, oat_filenames_)) { 1989 LOG(ERROR) << "Failure during image file creation"; 1990 return false; 1991 } 1992 1993 // We need the OatDataBegin entries. 1994 std::map<const char*, uintptr_t> oat_data_begins; 1995 for (const char* oat_filename : oat_filenames_) { 1996 oat_data_begins.emplace(oat_filename, image_writer_->GetOatDataBegin(oat_filename)); 1997 } 1998 // Destroy ImageWriter before doing FixupElf. 1999 image_writer_.reset(); 2000 2001 for (const char* oat_filename : oat_filenames_) { 2002 // Do not fix up the ELF file if we are --compile-pic or compiling the app image 2003 if (!compiler_options_->GetCompilePic() && IsBootImage()) { 2004 std::unique_ptr<File> oat_file(OS::OpenFileReadWrite(oat_filename)); 2005 if (oat_file.get() == nullptr) { 2006 PLOG(ERROR) << "Failed to open ELF file: " << oat_filename; 2007 return false; 2008 } 2009 2010 uintptr_t oat_data_begin = oat_data_begins.find(oat_filename)->second; 2011 2012 if (!ElfWriter::Fixup(oat_file.get(), oat_data_begin)) { 2013 oat_file->Erase(); 2014 LOG(ERROR) << "Failed to fixup ELF file " << oat_file->GetPath(); 2015 return false; 2016 } 2017 2018 if (oat_file->FlushCloseOrErase()) { 2019 PLOG(ERROR) << "Failed to flush and close fixed ELF file " << oat_file->GetPath(); 2020 return false; 2021 } 2022 } 2023 } 2024 2025 return true; 2026 } 2027 2028 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 2029 static std::unordered_set<std::string>* ReadImageClassesFromFile( 2030 const char* image_classes_filename) { 2031 std::function<std::string(const char*)> process = DotToDescriptor; 2032 return ReadCommentedInputFromFile(image_classes_filename, &process); 2033 } 2034 2035 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 2036 static std::unordered_set<std::string>* ReadImageClassesFromZip( 2037 const char* zip_filename, 2038 const char* image_classes_filename, 2039 std::string* error_msg) { 2040 std::function<std::string(const char*)> process = DotToDescriptor; 2041 return ReadCommentedInputFromZip(zip_filename, image_classes_filename, &process, error_msg); 2042 } 2043 2044 // Read lines from the given file, dropping comments and empty lines. Post-process each line with 2045 // the given function. 2046 static std::unordered_set<std::string>* ReadCommentedInputFromFile( 2047 const char* input_filename, std::function<std::string(const char*)>* process) { 2048 std::unique_ptr<std::ifstream> input_file(new std::ifstream(input_filename, std::ifstream::in)); 2049 if (input_file.get() == nullptr) { 2050 LOG(ERROR) << "Failed to open input file " << input_filename; 2051 return nullptr; 2052 } 2053 std::unique_ptr<std::unordered_set<std::string>> result( 2054 ReadCommentedInputStream(*input_file, process)); 2055 input_file->close(); 2056 return result.release(); 2057 } 2058 2059 // Read lines from the given file from the given zip file, dropping comments and empty lines. 2060 // Post-process each line with the given function. 2061 static std::unordered_set<std::string>* ReadCommentedInputFromZip( 2062 const char* zip_filename, 2063 const char* input_filename, 2064 std::function<std::string(const char*)>* process, 2065 std::string* error_msg) { 2066 std::unique_ptr<ZipArchive> zip_archive(ZipArchive::Open(zip_filename, error_msg)); 2067 if (zip_archive.get() == nullptr) { 2068 return nullptr; 2069 } 2070 std::unique_ptr<ZipEntry> zip_entry(zip_archive->Find(input_filename, error_msg)); 2071 if (zip_entry.get() == nullptr) { 2072 *error_msg = StringPrintf("Failed to find '%s' within '%s': %s", input_filename, 2073 zip_filename, error_msg->c_str()); 2074 return nullptr; 2075 } 2076 std::unique_ptr<MemMap> input_file(zip_entry->ExtractToMemMap(zip_filename, 2077 input_filename, 2078 error_msg)); 2079 if (input_file.get() == nullptr) { 2080 *error_msg = StringPrintf("Failed to extract '%s' from '%s': %s", input_filename, 2081 zip_filename, error_msg->c_str()); 2082 return nullptr; 2083 } 2084 const std::string input_string(reinterpret_cast<char*>(input_file->Begin()), 2085 input_file->Size()); 2086 std::istringstream input_stream(input_string); 2087 return ReadCommentedInputStream(input_stream, process); 2088 } 2089 2090 // Read lines from the given stream, dropping comments and empty lines. Post-process each line 2091 // with the given function. 2092 static std::unordered_set<std::string>* ReadCommentedInputStream( 2093 std::istream& in_stream, 2094 std::function<std::string(const char*)>* process) { 2095 std::unique_ptr<std::unordered_set<std::string>> image_classes( 2096 new std::unordered_set<std::string>); 2097 while (in_stream.good()) { 2098 std::string dot; 2099 std::getline(in_stream, dot); 2100 if (StartsWith(dot, "#") || dot.empty()) { 2101 continue; 2102 } 2103 if (process != nullptr) { 2104 std::string descriptor((*process)(dot.c_str())); 2105 image_classes->insert(descriptor); 2106 } else { 2107 image_classes->insert(dot); 2108 } 2109 } 2110 return image_classes.release(); 2111 } 2112 2113 void LogCompletionTime() { 2114 // Note: when creation of a runtime fails, e.g., when trying to compile an app but when there 2115 // is no image, there won't be a Runtime::Current(). 2116 // Note: driver creation can fail when loading an invalid dex file. 2117 LOG(INFO) << "dex2oat took " << PrettyDuration(NanoTime() - start_ns_) 2118 << " (threads: " << thread_count_ << ") " 2119 << ((Runtime::Current() != nullptr && driver_ != nullptr) ? 2120 driver_->GetMemoryUsageString(kIsDebugBuild || VLOG_IS_ON(compiler)) : 2121 ""); 2122 } 2123 2124 std::string StripIsaFrom(const char* image_filename, InstructionSet isa) { 2125 std::string res(image_filename); 2126 size_t last_slash = res.rfind('/'); 2127 if (last_slash == std::string::npos || last_slash == 0) { 2128 return res; 2129 } 2130 size_t penultimate_slash = res.rfind('/', last_slash - 1); 2131 if (penultimate_slash == std::string::npos) { 2132 return res; 2133 } 2134 // Check that the string in-between is the expected one. 2135 if (res.substr(penultimate_slash + 1, last_slash - penultimate_slash - 1) != 2136 GetInstructionSetString(isa)) { 2137 LOG(WARNING) << "Unexpected string when trying to strip isa: " << res; 2138 return res; 2139 } 2140 return res.substr(0, penultimate_slash) + res.substr(last_slash); 2141 } 2142 2143 // Update the estimate for the oat file with the given index. 2144 void UpdateImageWriter(size_t index) { 2145 DCHECK(image_writer_ != nullptr); 2146 DCHECK_LT(index, oat_filenames_.size()); 2147 2148 image_writer_->UpdateOatFile(oat_filenames_[index]); 2149 } 2150 2151 std::unique_ptr<CompilerOptions> compiler_options_; 2152 Compiler::Kind compiler_kind_; 2153 2154 InstructionSet instruction_set_; 2155 std::unique_ptr<const InstructionSetFeatures> instruction_set_features_; 2156 2157 std::unique_ptr<SafeMap<std::string, std::string> > key_value_store_; 2158 2159 std::unique_ptr<VerificationResults> verification_results_; 2160 2161 DexFileToMethodInlinerMap method_inliner_map_; 2162 std::unique_ptr<QuickCompilerCallbacks> callbacks_; 2163 2164 // Ownership for the class path files. 2165 std::vector<std::unique_ptr<const DexFile>> class_path_files_; 2166 2167 std::unique_ptr<Runtime> runtime_; 2168 2169 size_t thread_count_; 2170 uint64_t start_ns_; 2171 std::unique_ptr<WatchDog> watchdog_; 2172 std::vector<std::unique_ptr<File>> oat_files_; 2173 std::string oat_location_; 2174 std::vector<const char*> oat_filenames_; 2175 std::vector<const char*> oat_unstripped_; 2176 int oat_fd_; 2177 std::vector<const char*> dex_filenames_; 2178 std::vector<const char*> dex_locations_; 2179 int zip_fd_; 2180 std::string zip_location_; 2181 std::string boot_image_filename_; 2182 std::vector<const char*> runtime_args_; 2183 std::vector<const char*> image_filenames_; 2184 uintptr_t image_base_; 2185 const char* image_classes_zip_filename_; 2186 const char* image_classes_filename_; 2187 ImageHeader::StorageMode image_storage_mode_; 2188 const char* compiled_classes_zip_filename_; 2189 const char* compiled_classes_filename_; 2190 const char* compiled_methods_zip_filename_; 2191 const char* compiled_methods_filename_; 2192 std::unique_ptr<std::unordered_set<std::string>> image_classes_; 2193 std::unique_ptr<std::unordered_set<std::string>> compiled_classes_; 2194 std::unique_ptr<std::unordered_set<std::string>> compiled_methods_; 2195 bool app_image_; 2196 bool boot_image_; 2197 bool is_host_; 2198 std::string android_root_; 2199 std::vector<const DexFile*> dex_files_; 2200 std::string no_inline_from_string_; 2201 std::vector<jobject> dex_caches_; 2202 std::vector<std::unique_ptr<const DexFile>> opened_dex_files_; 2203 2204 std::unique_ptr<ImageWriter> image_writer_; 2205 std::unique_ptr<CompilerDriver> driver_; 2206 2207 std::vector<std::string> verbose_methods_; 2208 bool dump_stats_; 2209 bool dump_passes_; 2210 bool dump_timing_; 2211 bool dump_slow_timing_; 2212 std::string dump_cfg_file_name_; 2213 bool dump_cfg_append_; 2214 std::string swap_file_name_; 2215 int swap_fd_; 2216 std::string app_image_file_name_; 2217 int app_image_fd_; 2218 std::string profile_file_; // Profile file to use 2219 TimingLogger* timings_; 2220 std::unique_ptr<CumulativeLogger> compiler_phases_timings_; 2221 std::vector<std::vector<const DexFile*>> dex_files_per_oat_file_; 2222 std::unordered_map<const DexFile*, const char*> dex_file_oat_filename_map_; 2223 2224 // Backing storage. 2225 std::vector<std::string> char_backing_storage_; 2226 2227 DISALLOW_IMPLICIT_CONSTRUCTORS(Dex2Oat); 2228}; 2229 2230static void b13564922() { 2231#if defined(__linux__) && defined(__arm__) 2232 int major, minor; 2233 struct utsname uts; 2234 if (uname(&uts) != -1 && 2235 sscanf(uts.release, "%d.%d", &major, &minor) == 2 && 2236 ((major < 3) || ((major == 3) && (minor < 4)))) { 2237 // Kernels before 3.4 don't handle the ASLR well and we can run out of address 2238 // space (http://b/13564922). Work around the issue by inhibiting further mmap() randomization. 2239 int old_personality = personality(0xffffffff); 2240 if ((old_personality & ADDR_NO_RANDOMIZE) == 0) { 2241 int new_personality = personality(old_personality | ADDR_NO_RANDOMIZE); 2242 if (new_personality == -1) { 2243 LOG(WARNING) << "personality(. | ADDR_NO_RANDOMIZE) failed."; 2244 } 2245 } 2246 } 2247#endif 2248} 2249 2250static int CompileImage(Dex2Oat& dex2oat) { 2251 dex2oat.Compile(); 2252 2253 if (!dex2oat.CreateOatFiles()) { 2254 dex2oat.EraseOatFiles(); 2255 return EXIT_FAILURE; 2256 } 2257 2258 // Close the image oat files. We always expect the output file by name, and it will be 2259 // re-opened from the unstripped name. Note: it's easier to *flush* and close... 2260 if (!dex2oat.FlushCloseOatFiles()) { 2261 return EXIT_FAILURE; 2262 } 2263 2264 // Creates the boot.art and patches the oat files. 2265 if (!dex2oat.HandleImage()) { 2266 return EXIT_FAILURE; 2267 } 2268 2269 // When given --host, finish early without stripping. 2270 if (dex2oat.IsHost()) { 2271 dex2oat.DumpTiming(); 2272 return EXIT_SUCCESS; 2273 } 2274 2275 // Copy stripped to unstripped location, if necessary. 2276 if (!dex2oat.CopyStrippedToUnstripped()) { 2277 return EXIT_FAILURE; 2278 } 2279 2280 // FlushClose again, as stripping might have re-opened the oat files. 2281 if (!dex2oat.FlushCloseOatFiles()) { 2282 return EXIT_FAILURE; 2283 } 2284 2285 dex2oat.DumpTiming(); 2286 return EXIT_SUCCESS; 2287} 2288 2289static int CompileApp(Dex2Oat& dex2oat) { 2290 dex2oat.Compile(); 2291 2292 if (!dex2oat.CreateOatFiles()) { 2293 dex2oat.EraseOatFiles(); 2294 return EXIT_FAILURE; 2295 } 2296 2297 // Do not close the oat files here. We might have gotten the output file by file descriptor, 2298 // which we would lose. 2299 2300 // When given --host, finish early without stripping. 2301 if (dex2oat.IsHost()) { 2302 if (!dex2oat.FlushCloseOatFiles()) { 2303 return EXIT_FAILURE; 2304 } 2305 2306 dex2oat.DumpTiming(); 2307 return EXIT_SUCCESS; 2308 } 2309 2310 // Copy stripped to unstripped location, if necessary. This will implicitly flush & close the 2311 // stripped versions. If this is given, we expect to be able to open writable files by name. 2312 if (!dex2oat.CopyStrippedToUnstripped()) { 2313 return EXIT_FAILURE; 2314 } 2315 2316 // Flush and close the files. 2317 if (!dex2oat.FlushCloseOatFiles()) { 2318 return EXIT_FAILURE; 2319 } 2320 2321 dex2oat.DumpTiming(); 2322 return EXIT_SUCCESS; 2323} 2324 2325static int dex2oat(int argc, char** argv) { 2326 b13564922(); 2327 2328 TimingLogger timings("compiler", false, false); 2329 2330 Dex2Oat dex2oat(&timings); 2331 2332 // Parse arguments. Argument mistakes will lead to exit(EXIT_FAILURE) in UsageError. 2333 dex2oat.ParseArgs(argc, argv); 2334 2335 // Check early that the result of compilation can be written 2336 if (!dex2oat.OpenFile()) { 2337 return EXIT_FAILURE; 2338 } 2339 2340 // Print the complete line when any of the following is true: 2341 // 1) Debug build 2342 // 2) Compiling an image 2343 // 3) Compiling with --host 2344 // 4) Compiling on the host (not a target build) 2345 // Otherwise, print a stripped command line. 2346 if (kIsDebugBuild || dex2oat.IsBootImage() || dex2oat.IsHost() || !kIsTargetBuild) { 2347 LOG(INFO) << CommandLine(); 2348 } else { 2349 LOG(INFO) << StrippedCommandLine(); 2350 } 2351 2352 if (!dex2oat.Setup()) { 2353 dex2oat.EraseOatFiles(); 2354 return EXIT_FAILURE; 2355 } 2356 2357 bool result; 2358 if (dex2oat.IsImage()) { 2359 result = CompileImage(dex2oat); 2360 } else { 2361 result = CompileApp(dex2oat); 2362 } 2363 2364 dex2oat.Shutdown(); 2365 return result; 2366} 2367} // namespace art 2368 2369int main(int argc, char** argv) { 2370 int result = art::dex2oat(argc, argv); 2371 // Everything was done, do an explicit exit here to avoid running Runtime destructors that take 2372 // time (bug 10645725) unless we're a debug build or running on valgrind. Note: The Dex2Oat class 2373 // should not destruct the runtime in this case. 2374 if (!art::kIsDebugBuild && (RUNNING_ON_MEMORY_TOOL == 0)) { 2375 exit(result); 2376 } 2377 return result; 2378} 2379