dex2oat.cc revision 4586fb6fe8a5df17e5dc02b3c1ae8d284815274f
1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include <stdio.h> 18#include <stdlib.h> 19#include <sys/stat.h> 20#include <valgrind.h> 21 22#include <fstream> 23#include <iostream> 24#include <sstream> 25#include <string> 26#include <vector> 27 28#if defined(__linux__) && defined(__arm__) 29#include <sys/personality.h> 30#include <sys/utsname.h> 31#endif 32 33#define ATRACE_TAG ATRACE_TAG_DALVIK 34#include <cutils/trace.h> 35 36#include "arch/instruction_set_features.h" 37#include "base/dumpable.h" 38#include "base/stl_util.h" 39#include "base/stringpiece.h" 40#include "base/timing_logger.h" 41#include "base/unix_file/fd_file.h" 42#include "class_linker.h" 43#include "compiler.h" 44#include "compiler_callbacks.h" 45#include "dex_file-inl.h" 46#include "dex/pass_driver_me_opts.h" 47#include "dex/verification_results.h" 48#include "dex/quick_compiler_callbacks.h" 49#include "dex/quick/dex_file_to_method_inliner_map.h" 50#include "driver/compiler_driver.h" 51#include "driver/compiler_options.h" 52#include "elf_file.h" 53#include "elf_writer.h" 54#include "gc/space/image_space.h" 55#include "gc/space/space-inl.h" 56#include "image_writer.h" 57#include "leb128.h" 58#include "mirror/art_method-inl.h" 59#include "mirror/class-inl.h" 60#include "mirror/class_loader.h" 61#include "mirror/object-inl.h" 62#include "mirror/object_array-inl.h" 63#include "oat_writer.h" 64#include "os.h" 65#include "runtime.h" 66#include "ScopedLocalRef.h" 67#include "scoped_thread_state_change.h" 68#include "utils.h" 69#include "vector_output_stream.h" 70#include "well_known_classes.h" 71#include "zip_archive.h" 72 73namespace art { 74 75static int original_argc; 76static char** original_argv; 77 78static std::string CommandLine() { 79 std::vector<std::string> command; 80 for (int i = 0; i < original_argc; ++i) { 81 command.push_back(original_argv[i]); 82 } 83 return Join(command, ' '); 84} 85 86static void UsageErrorV(const char* fmt, va_list ap) { 87 std::string error; 88 StringAppendV(&error, fmt, ap); 89 LOG(ERROR) << error; 90} 91 92static void UsageError(const char* fmt, ...) { 93 va_list ap; 94 va_start(ap, fmt); 95 UsageErrorV(fmt, ap); 96 va_end(ap); 97} 98 99[[noreturn]] static void Usage(const char* fmt, ...) { 100 va_list ap; 101 va_start(ap, fmt); 102 UsageErrorV(fmt, ap); 103 va_end(ap); 104 105 UsageError("Command: %s", CommandLine().c_str()); 106 107 UsageError("Usage: dex2oat [options]..."); 108 UsageError(""); 109 UsageError(" --dex-file=<dex-file>: specifies a .dex file to compile."); 110 UsageError(" Example: --dex-file=/system/framework/core.jar"); 111 UsageError(""); 112 UsageError(" --zip-fd=<file-descriptor>: specifies a file descriptor of a zip file"); 113 UsageError(" containing a classes.dex file to compile."); 114 UsageError(" Example: --zip-fd=5"); 115 UsageError(""); 116 UsageError(" --zip-location=<zip-location>: specifies a symbolic name for the file"); 117 UsageError(" corresponding to the file descriptor specified by --zip-fd."); 118 UsageError(" Example: --zip-location=/system/app/Calculator.apk"); 119 UsageError(""); 120 UsageError(" --oat-file=<file.oat>: specifies the oat output destination via a filename."); 121 UsageError(" Example: --oat-file=/system/framework/boot.oat"); 122 UsageError(""); 123 UsageError(" --oat-fd=<number>: specifies the oat output destination via a file descriptor."); 124 UsageError(" Example: --oat-fd=6"); 125 UsageError(""); 126 UsageError(" --oat-location=<oat-name>: specifies a symbolic name for the file corresponding"); 127 UsageError(" to the file descriptor specified by --oat-fd."); 128 UsageError(" Example: --oat-location=/data/dalvik-cache/system@app@Calculator.apk.oat"); 129 UsageError(""); 130 UsageError(" --oat-symbols=<file.oat>: specifies the oat output destination with full symbols."); 131 UsageError(" Example: --oat-symbols=/symbols/system/framework/boot.oat"); 132 UsageError(""); 133 UsageError(" --bitcode=<file.bc>: specifies the optional bitcode filename."); 134 UsageError(" Example: --bitcode=/system/framework/boot.bc"); 135 UsageError(""); 136 UsageError(" --image=<file.art>: specifies the output image filename."); 137 UsageError(" Example: --image=/system/framework/boot.art"); 138 UsageError(""); 139 UsageError(" --image-classes=<classname-file>: specifies classes to include in an image."); 140 UsageError(" Example: --image=frameworks/base/preloaded-classes"); 141 UsageError(""); 142 UsageError(" --base=<hex-address>: specifies the base address when creating a boot image."); 143 UsageError(" Example: --base=0x50000000"); 144 UsageError(""); 145 UsageError(" --boot-image=<file.art>: provide the image file for the boot class path."); 146 UsageError(" Example: --boot-image=/system/framework/boot.art"); 147 UsageError(" Default: $ANDROID_ROOT/system/framework/boot.art"); 148 UsageError(""); 149 UsageError(" --android-root=<path>: used to locate libraries for portable linking."); 150 UsageError(" Example: --android-root=out/host/linux-x86"); 151 UsageError(" Default: $ANDROID_ROOT"); 152 UsageError(""); 153 UsageError(" --instruction-set=(arm|arm64|mips|x86|x86_64): compile for a particular"); 154 UsageError(" instruction set."); 155 UsageError(" Example: --instruction-set=x86"); 156 UsageError(" Default: arm"); 157 UsageError(""); 158 UsageError(" --instruction-set-features=...,: Specify instruction set features"); 159 UsageError(" Example: --instruction-set-features=div"); 160 UsageError(" Default: default"); 161 UsageError(""); 162 UsageError(" --compile-pic: Force indirect use of code, methods, and classes"); 163 UsageError(" Default: disabled"); 164 UsageError(""); 165 UsageError(" --compiler-backend=(Quick|Optimizing|Portable): select compiler backend"); 166 UsageError(" set."); 167 UsageError(" Example: --compiler-backend=Portable"); 168 if (kUsePortableCompiler) { 169 UsageError(" Default: Portable"); 170 } else if (kUseOptimizingCompiler) { 171 UsageError(" Default: Optimizing"); 172 } else { 173 UsageError(" Default: Quick"); 174 } 175 UsageError(""); 176 UsageError(" --compiler-filter=" 177 "(verify-none" 178 "|interpret-only" 179 "|space" 180 "|balanced" 181 "|speed" 182 "|everything" 183 "|time):"); 184 UsageError(" select compiler filter."); 185 UsageError(" Example: --compiler-filter=everything"); 186#if ART_SMALL_MODE 187 UsageError(" Default: interpret-only"); 188#else 189 UsageError(" Default: speed"); 190#endif 191 UsageError(""); 192 UsageError(" --huge-method-max=<method-instruction-count>: the threshold size for a huge"); 193 UsageError(" method for compiler filter tuning."); 194 UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold); 195 UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold); 196 UsageError(""); 197 UsageError(" --huge-method-max=<method-instruction-count>: threshold size for a huge"); 198 UsageError(" method for compiler filter tuning."); 199 UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold); 200 UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold); 201 UsageError(""); 202 UsageError(" --large-method-max=<method-instruction-count>: threshold size for a large"); 203 UsageError(" method for compiler filter tuning."); 204 UsageError(" Example: --large-method-max=%d", CompilerOptions::kDefaultLargeMethodThreshold); 205 UsageError(" Default: %d", CompilerOptions::kDefaultLargeMethodThreshold); 206 UsageError(""); 207 UsageError(" --small-method-max=<method-instruction-count>: threshold size for a small"); 208 UsageError(" method for compiler filter tuning."); 209 UsageError(" Example: --small-method-max=%d", CompilerOptions::kDefaultSmallMethodThreshold); 210 UsageError(" Default: %d", CompilerOptions::kDefaultSmallMethodThreshold); 211 UsageError(""); 212 UsageError(" --tiny-method-max=<method-instruction-count>: threshold size for a tiny"); 213 UsageError(" method for compiler filter tuning."); 214 UsageError(" Example: --tiny-method-max=%d", CompilerOptions::kDefaultTinyMethodThreshold); 215 UsageError(" Default: %d", CompilerOptions::kDefaultTinyMethodThreshold); 216 UsageError(""); 217 UsageError(" --num-dex-methods=<method-count>: threshold size for a small dex file for"); 218 UsageError(" compiler filter tuning. If the input has fewer than this many methods"); 219 UsageError(" and the filter is not interpret-only or verify-none, overrides the"); 220 UsageError(" filter to use speed"); 221 UsageError(" Example: --num-dex-method=%d", CompilerOptions::kDefaultNumDexMethodsThreshold); 222 UsageError(" Default: %d", CompilerOptions::kDefaultNumDexMethodsThreshold); 223 UsageError(""); 224 UsageError(" --host: used with Portable backend to link against host runtime libraries"); 225 UsageError(""); 226 UsageError(" --dump-timing: display a breakdown of where time was spent"); 227 UsageError(""); 228 UsageError(" --include-patch-information: Include patching information so the generated code"); 229 UsageError(" can have its base address moved without full recompilation."); 230 UsageError(""); 231 UsageError(" --no-include-patch-information: Do not include patching information."); 232 UsageError(""); 233 UsageError(" --include-debug-symbols: Include ELF symbols in this oat file"); 234 UsageError(""); 235 UsageError(" --no-include-debug-symbols: Do not include ELF symbols in this oat file"); 236 UsageError(""); 237 UsageError(" --runtime-arg <argument>: used to specify various arguments for the runtime,"); 238 UsageError(" such as initial heap size, maximum heap size, and verbose output."); 239 UsageError(" Use a separate --runtime-arg switch for each argument."); 240 UsageError(" Example: --runtime-arg -Xms256m"); 241 UsageError(""); 242 UsageError(" --profile-file=<filename>: specify profiler output file to use for compilation."); 243 UsageError(""); 244 UsageError(" --print-pass-names: print a list of pass names"); 245 UsageError(""); 246 UsageError(" --disable-passes=<pass-names>: disable one or more passes separated by comma."); 247 UsageError(" Example: --disable-passes=UseCount,BBOptimizations"); 248 UsageError(""); 249 UsageError(" --print-pass-options: print a list of passes that have configurable options along " 250 "with the setting."); 251 UsageError(" Will print default if no overridden setting exists."); 252 UsageError(""); 253 UsageError(" --pass-options=Pass1Name:Pass1OptionName:Pass1Option#," 254 "Pass2Name:Pass2OptionName:Pass2Option#"); 255 UsageError(" Used to specify a pass specific option. The setting itself must be integer."); 256 UsageError(" Separator used between options is a comma."); 257 UsageError(""); 258 std::cerr << "See log for usage error information\n"; 259 exit(EXIT_FAILURE); 260} 261 262// The primary goal of the watchdog is to prevent stuck build servers 263// during development when fatal aborts lead to a cascade of failures 264// that result in a deadlock. 265class WatchDog { 266// WatchDog defines its own CHECK_PTHREAD_CALL to avoid using Log which uses locks 267#undef CHECK_PTHREAD_CALL 268#define CHECK_WATCH_DOG_PTHREAD_CALL(call, args, what) \ 269 do { \ 270 int rc = call args; \ 271 if (rc != 0) { \ 272 errno = rc; \ 273 std::string message(# call); \ 274 message += " failed for "; \ 275 message += reason; \ 276 Fatal(message); \ 277 } \ 278 } while (false) 279 280 public: 281 explicit WatchDog(bool is_watch_dog_enabled) { 282 is_watch_dog_enabled_ = is_watch_dog_enabled; 283 if (!is_watch_dog_enabled_) { 284 return; 285 } 286 shutting_down_ = false; 287 const char* reason = "dex2oat watch dog thread startup"; 288 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_init, (&mutex_, nullptr), reason); 289 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_init, (&cond_, nullptr), reason); 290 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_init, (&attr_), reason); 291 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_create, (&pthread_, &attr_, &CallBack, this), reason); 292 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_destroy, (&attr_), reason); 293 } 294 ~WatchDog() { 295 if (!is_watch_dog_enabled_) { 296 return; 297 } 298 const char* reason = "dex2oat watch dog thread shutdown"; 299 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 300 shutting_down_ = true; 301 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_signal, (&cond_), reason); 302 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 303 304 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_join, (pthread_, nullptr), reason); 305 306 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_destroy, (&cond_), reason); 307 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_destroy, (&mutex_), reason); 308 } 309 310 private: 311 static void* CallBack(void* arg) { 312 WatchDog* self = reinterpret_cast<WatchDog*>(arg); 313 ::art::SetThreadName("dex2oat watch dog"); 314 self->Wait(); 315 return nullptr; 316 } 317 318 static void Message(char severity, const std::string& message) { 319 // TODO: Remove when we switch to LOG when we can guarantee it won't prevent shutdown in error 320 // cases. 321 fprintf(stderr, "dex2oat%s %c %d %d %s\n", 322 kIsDebugBuild ? "d" : "", 323 severity, 324 getpid(), 325 GetTid(), 326 message.c_str()); 327 } 328 329 static void Warn(const std::string& message) { 330 Message('W', message); 331 } 332 333 [[noreturn]] static void Fatal(const std::string& message) { 334 Message('F', message); 335 exit(1); 336 } 337 338 void Wait() { 339 bool warning = true; 340 CHECK_GT(kWatchDogTimeoutSeconds, kWatchDogWarningSeconds); 341 // TODO: tune the multiplier for GC verification, the following is just to make the timeout 342 // large. 343 int64_t multiplier = kVerifyObjectSupport > kVerifyObjectModeFast ? 100 : 1; 344 timespec warning_ts; 345 InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogWarningSeconds * 1000, 0, &warning_ts); 346 timespec timeout_ts; 347 InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogTimeoutSeconds * 1000, 0, &timeout_ts); 348 const char* reason = "dex2oat watch dog thread waiting"; 349 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 350 while (!shutting_down_) { 351 int rc = TEMP_FAILURE_RETRY(pthread_cond_timedwait(&cond_, &mutex_, 352 warning ? &warning_ts 353 : &timeout_ts)); 354 if (rc == ETIMEDOUT) { 355 std::string message(StringPrintf("dex2oat did not finish after %d seconds", 356 warning ? kWatchDogWarningSeconds 357 : kWatchDogTimeoutSeconds)); 358 if (warning) { 359 Warn(message.c_str()); 360 warning = false; 361 } else { 362 Fatal(message.c_str()); 363 } 364 } else if (rc != 0) { 365 std::string message(StringPrintf("pthread_cond_timedwait failed: %s", 366 strerror(errno))); 367 Fatal(message.c_str()); 368 } 369 } 370 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 371 } 372 373 // When setting timeouts, keep in mind that the build server may not be as fast as your desktop. 374 // Debug builds are slower so they have larger timeouts. 375 static const unsigned int kSlowdownFactor = kIsDebugBuild ? 5U : 1U; 376 377 static const unsigned int kWatchDogWarningSeconds = kUsePortableCompiler ? 378 kSlowdownFactor * 2 * 60 : // 2 minutes scaled by kSlowdownFactor (portable). 379 kSlowdownFactor * 1 * 60; // 1 minute scaled by kSlowdownFactor (not-portable). 380 static const unsigned int kWatchDogTimeoutSeconds = kUsePortableCompiler ? 381 kSlowdownFactor * 30 * 60 : // 30 minutes scaled by kSlowdownFactor (portable). 382 kSlowdownFactor * 6 * 60; // 6 minutes scaled by kSlowdownFactor (not-portable). 383 384 bool is_watch_dog_enabled_; 385 bool shutting_down_; 386 // TODO: Switch to Mutex when we can guarantee it won't prevent shutdown in error cases. 387 pthread_mutex_t mutex_; 388 pthread_cond_t cond_; 389 pthread_attr_t attr_; 390 pthread_t pthread_; 391}; 392 393static void ParseStringAfterChar(const std::string& s, char c, std::string* parsed_value) { 394 std::string::size_type colon = s.find(c); 395 if (colon == std::string::npos) { 396 Usage("Missing char %c in option %s\n", c, s.c_str()); 397 } 398 // Add one to remove the char we were trimming until. 399 *parsed_value = s.substr(colon + 1); 400} 401 402static void ParseDouble(const std::string& option, char after_char, double min, double max, 403 double* parsed_value) { 404 std::string substring; 405 ParseStringAfterChar(option, after_char, &substring); 406 bool sane_val = true; 407 double value; 408 if (false) { 409 // TODO: this doesn't seem to work on the emulator. b/15114595 410 std::stringstream iss(substring); 411 iss >> value; 412 // Ensure that we have a value, there was no cruft after it and it satisfies a sensible range. 413 sane_val = iss.eof() && (value >= min) && (value <= max); 414 } else { 415 char* end = nullptr; 416 value = strtod(substring.c_str(), &end); 417 sane_val = *end == '\0' && value >= min && value <= max; 418 } 419 if (!sane_val) { 420 Usage("Invalid double value %s for option %s\n", substring.c_str(), option.c_str()); 421 } 422 *parsed_value = value; 423} 424 425class Dex2Oat FINAL { 426 public: 427 explicit Dex2Oat(TimingLogger* timings) : 428 compiler_kind_(kUsePortableCompiler 429 ? Compiler::kPortable 430 : (kUseOptimizingCompiler ? Compiler::kOptimizing : Compiler::kQuick)), 431 instruction_set_(kRuntimeISA), 432 // Take the default set of instruction features from the build. 433 method_inliner_map_(), 434 runtime_(nullptr), 435 thread_count_(sysconf(_SC_NPROCESSORS_CONF)), 436 start_ns_(NanoTime()), 437 oat_fd_(-1), 438 zip_fd_(-1), 439 image_base_(0U), 440 image_classes_zip_filename_(nullptr), 441 image_classes_filename_(nullptr), 442 compiled_classes_zip_filename_(nullptr), 443 compiled_classes_filename_(nullptr), 444 image_(false), 445 is_host_(false), 446 dump_stats_(false), 447 dump_passes_(false), 448 dump_timing_(false), 449 dump_slow_timing_(kIsDebugBuild), 450 timings_(timings) {} 451 452 ~Dex2Oat() { 453 if (kIsDebugBuild || (RUNNING_ON_VALGRIND != 0)) { 454 delete runtime_; // See field declaration for why this is manual. 455 } 456 LogCompletionTime(); 457 } 458 459 // Parse the arguments from the command line. In case of an unrecognized option or impossible 460 // values/combinations, a usage error will be displayed and exit() is called. Thus, if the method 461 // returns, arguments have been successfully parsed. 462 void ParseArgs(int argc, char** argv) { 463 original_argc = argc; 464 original_argv = argv; 465 466 InitLogging(argv); 467 468 // Skip over argv[0]. 469 argv++; 470 argc--; 471 472 if (argc == 0) { 473 Usage("No arguments specified"); 474 } 475 476 std::string oat_symbols; 477 std::string boot_image_filename; 478 const char* compiler_filter_string = nullptr; 479 bool compile_pic = false; 480 int huge_method_threshold = CompilerOptions::kDefaultHugeMethodThreshold; 481 int large_method_threshold = CompilerOptions::kDefaultLargeMethodThreshold; 482 int small_method_threshold = CompilerOptions::kDefaultSmallMethodThreshold; 483 int tiny_method_threshold = CompilerOptions::kDefaultTinyMethodThreshold; 484 int num_dex_methods_threshold = CompilerOptions::kDefaultNumDexMethodsThreshold; 485 486 // Profile file to use 487 double top_k_profile_threshold = CompilerOptions::kDefaultTopKProfileThreshold; 488 489 bool print_pass_options = false; 490 bool include_patch_information = CompilerOptions::kDefaultIncludePatchInformation; 491 bool include_debug_symbols = kIsDebugBuild; 492 bool watch_dog_enabled = true; 493 bool generate_gdb_information = kIsDebugBuild; 494 495 std::string error_msg; 496 497 for (int i = 0; i < argc; i++) { 498 const StringPiece option(argv[i]); 499 const bool log_options = false; 500 if (log_options) { 501 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 502 } 503 if (option.starts_with("--dex-file=")) { 504 dex_filenames_.push_back(option.substr(strlen("--dex-file=")).data()); 505 } else if (option.starts_with("--dex-location=")) { 506 dex_locations_.push_back(option.substr(strlen("--dex-location=")).data()); 507 } else if (option.starts_with("--zip-fd=")) { 508 const char* zip_fd_str = option.substr(strlen("--zip-fd=")).data(); 509 if (!ParseInt(zip_fd_str, &zip_fd_)) { 510 Usage("Failed to parse --zip-fd argument '%s' as an integer", zip_fd_str); 511 } 512 if (zip_fd_ < 0) { 513 Usage("--zip-fd passed a negative value %d", zip_fd_); 514 } 515 } else if (option.starts_with("--zip-location=")) { 516 zip_location_ = option.substr(strlen("--zip-location=")).data(); 517 } else if (option.starts_with("--oat-file=")) { 518 oat_filename_ = option.substr(strlen("--oat-file=")).data(); 519 } else if (option.starts_with("--oat-symbols=")) { 520 oat_symbols = option.substr(strlen("--oat-symbols=")).data(); 521 } else if (option.starts_with("--oat-fd=")) { 522 const char* oat_fd_str = option.substr(strlen("--oat-fd=")).data(); 523 if (!ParseInt(oat_fd_str, &oat_fd_)) { 524 Usage("Failed to parse --oat-fd argument '%s' as an integer", oat_fd_str); 525 } 526 if (oat_fd_ < 0) { 527 Usage("--oat-fd passed a negative value %d", oat_fd_); 528 } 529 } else if (option == "--watch-dog") { 530 watch_dog_enabled = true; 531 } else if (option == "--no-watch-dog") { 532 watch_dog_enabled = false; 533 } else if (option == "--gen-gdb-info") { 534 generate_gdb_information = true; 535 // Debug symbols are needed for gdb information. 536 include_debug_symbols = true; 537 } else if (option == "--no-gen-gdb-info") { 538 generate_gdb_information = false; 539 } else if (option.starts_with("-j")) { 540 const char* thread_count_str = option.substr(strlen("-j")).data(); 541 if (!ParseUint(thread_count_str, &thread_count_)) { 542 Usage("Failed to parse -j argument '%s' as an integer", thread_count_str); 543 } 544 } else if (option.starts_with("--oat-location=")) { 545 oat_location_ = option.substr(strlen("--oat-location=")).data(); 546 } else if (option.starts_with("--bitcode=")) { 547 bitcode_filename_ = option.substr(strlen("--bitcode=")).data(); 548 } else if (option.starts_with("--image=")) { 549 image_filename_ = option.substr(strlen("--image=")).data(); 550 } else if (option.starts_with("--image-classes=")) { 551 image_classes_filename_ = option.substr(strlen("--image-classes=")).data(); 552 } else if (option.starts_with("--image-classes-zip=")) { 553 image_classes_zip_filename_ = option.substr(strlen("--image-classes-zip=")).data(); 554 } else if (option.starts_with("--compiled-classes=")) { 555 compiled_classes_filename_ = option.substr(strlen("--compiled-classes=")).data(); 556 } else if (option.starts_with("--compiled-classes-zip=")) { 557 compiled_classes_zip_filename_ = option.substr(strlen("--compiled-classes-zip=")).data(); 558 } else if (option.starts_with("--base=")) { 559 const char* image_base_str = option.substr(strlen("--base=")).data(); 560 char* end; 561 image_base_ = strtoul(image_base_str, &end, 16); 562 if (end == image_base_str || *end != '\0') { 563 Usage("Failed to parse hexadecimal value for option %s", option.data()); 564 } 565 } else if (option.starts_with("--boot-image=")) { 566 boot_image_filename = option.substr(strlen("--boot-image=")).data(); 567 } else if (option.starts_with("--android-root=")) { 568 android_root_ = option.substr(strlen("--android-root=")).data(); 569 } else if (option.starts_with("--instruction-set=")) { 570 StringPiece instruction_set_str = option.substr(strlen("--instruction-set=")).data(); 571 // StringPiece is not necessarily zero-terminated, so need to make a copy and ensure it. 572 std::unique_ptr<char> buf(new char[instruction_set_str.length() + 1]); 573 strncpy(buf.get(), instruction_set_str.data(), instruction_set_str.length()); 574 buf.get()[instruction_set_str.length()] = 0; 575 instruction_set_ = GetInstructionSetFromString(buf.get()); 576 // arm actually means thumb2. 577 if (instruction_set_ == InstructionSet::kArm) { 578 instruction_set_ = InstructionSet::kThumb2; 579 } 580 } else if (option.starts_with("--instruction-set-variant=")) { 581 StringPiece str = option.substr(strlen("--instruction-set-variant=")).data(); 582 instruction_set_features_.reset( 583 InstructionSetFeatures::FromVariant(instruction_set_, str.as_string(), &error_msg)); 584 if (instruction_set_features_.get() == nullptr) { 585 Usage("%s", error_msg.c_str()); 586 } 587 } else if (option.starts_with("--instruction-set-features=")) { 588 StringPiece str = option.substr(strlen("--instruction-set-features=")).data(); 589 if (instruction_set_features_.get() == nullptr) { 590 instruction_set_features_.reset( 591 InstructionSetFeatures::FromVariant(instruction_set_, "default", &error_msg)); 592 if (instruction_set_features_.get() == nullptr) { 593 Usage("Problem initializing default instruction set features variant: %s", 594 error_msg.c_str()); 595 } 596 } 597 instruction_set_features_.reset( 598 instruction_set_features_->AddFeaturesFromString(str.as_string(), &error_msg)); 599 if (instruction_set_features_.get() == nullptr) { 600 Usage("Error parsing '%s': %s", option.data(), error_msg.c_str()); 601 } 602 } else if (option.starts_with("--compiler-backend=")) { 603 StringPiece backend_str = option.substr(strlen("--compiler-backend=")).data(); 604 if (backend_str == "Quick") { 605 compiler_kind_ = Compiler::kQuick; 606 } else if (backend_str == "Optimizing") { 607 compiler_kind_ = Compiler::kOptimizing; 608 } else if (backend_str == "Portable") { 609 compiler_kind_ = Compiler::kPortable; 610 } else { 611 Usage("Unknown compiler backend: %s", backend_str.data()); 612 } 613 } else if (option.starts_with("--compiler-filter=")) { 614 compiler_filter_string = option.substr(strlen("--compiler-filter=")).data(); 615 } else if (option == "--compile-pic") { 616 compile_pic = true; 617 } else if (option.starts_with("--huge-method-max=")) { 618 const char* threshold = option.substr(strlen("--huge-method-max=")).data(); 619 if (!ParseInt(threshold, &huge_method_threshold)) { 620 Usage("Failed to parse --huge-method-max '%s' as an integer", threshold); 621 } 622 if (huge_method_threshold < 0) { 623 Usage("--huge-method-max passed a negative value %s", huge_method_threshold); 624 } 625 } else if (option.starts_with("--large-method-max=")) { 626 const char* threshold = option.substr(strlen("--large-method-max=")).data(); 627 if (!ParseInt(threshold, &large_method_threshold)) { 628 Usage("Failed to parse --large-method-max '%s' as an integer", threshold); 629 } 630 if (large_method_threshold < 0) { 631 Usage("--large-method-max passed a negative value %s", large_method_threshold); 632 } 633 } else if (option.starts_with("--small-method-max=")) { 634 const char* threshold = option.substr(strlen("--small-method-max=")).data(); 635 if (!ParseInt(threshold, &small_method_threshold)) { 636 Usage("Failed to parse --small-method-max '%s' as an integer", threshold); 637 } 638 if (small_method_threshold < 0) { 639 Usage("--small-method-max passed a negative value %s", small_method_threshold); 640 } 641 } else if (option.starts_with("--tiny-method-max=")) { 642 const char* threshold = option.substr(strlen("--tiny-method-max=")).data(); 643 if (!ParseInt(threshold, &tiny_method_threshold)) { 644 Usage("Failed to parse --tiny-method-max '%s' as an integer", threshold); 645 } 646 if (tiny_method_threshold < 0) { 647 Usage("--tiny-method-max passed a negative value %s", tiny_method_threshold); 648 } 649 } else if (option.starts_with("--num-dex-methods=")) { 650 const char* threshold = option.substr(strlen("--num-dex-methods=")).data(); 651 if (!ParseInt(threshold, &num_dex_methods_threshold)) { 652 Usage("Failed to parse --num-dex-methods '%s' as an integer", threshold); 653 } 654 if (num_dex_methods_threshold < 0) { 655 Usage("--num-dex-methods passed a negative value %s", num_dex_methods_threshold); 656 } 657 } else if (option == "--host") { 658 is_host_ = true; 659 } else if (option == "--runtime-arg") { 660 if (++i >= argc) { 661 Usage("Missing required argument for --runtime-arg"); 662 } 663 if (log_options) { 664 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 665 } 666 runtime_args_.push_back(argv[i]); 667 } else if (option == "--dump-timing") { 668 dump_timing_ = true; 669 } else if (option == "--dump-passes") { 670 dump_passes_ = true; 671 } else if (option == "--dump-stats") { 672 dump_stats_ = true; 673 } else if (option == "--include-debug-symbols" || option == "--no-strip-symbols") { 674 include_debug_symbols = true; 675 } else if (option == "--no-include-debug-symbols" || option == "--strip-symbols") { 676 include_debug_symbols = false; 677 generate_gdb_information = false; // Depends on debug symbols, see above. 678 } else if (option.starts_with("--profile-file=")) { 679 profile_file_ = option.substr(strlen("--profile-file=")).data(); 680 VLOG(compiler) << "dex2oat: profile file is " << profile_file_; 681 } else if (option == "--no-profile-file") { 682 // No profile 683 } else if (option.starts_with("--top-k-profile-threshold=")) { 684 ParseDouble(option.data(), '=', 0.0, 100.0, &top_k_profile_threshold); 685 } else if (option == "--print-pass-names") { 686 PassDriverMEOpts::PrintPassNames(); 687 } else if (option.starts_with("--disable-passes=")) { 688 std::string disable_passes = option.substr(strlen("--disable-passes=")).data(); 689 PassDriverMEOpts::CreateDefaultPassList(disable_passes); 690 } else if (option.starts_with("--print-passes=")) { 691 std::string print_passes = option.substr(strlen("--print-passes=")).data(); 692 PassDriverMEOpts::SetPrintPassList(print_passes); 693 } else if (option == "--print-all-passes") { 694 PassDriverMEOpts::SetPrintAllPasses(); 695 } else if (option.starts_with("--dump-cfg-passes=")) { 696 std::string dump_passes_string = option.substr(strlen("--dump-cfg-passes=")).data(); 697 PassDriverMEOpts::SetDumpPassList(dump_passes_string); 698 } else if (option == "--print-pass-options") { 699 print_pass_options = true; 700 } else if (option.starts_with("--pass-options=")) { 701 std::string options = option.substr(strlen("--pass-options=")).data(); 702 PassDriverMEOpts::SetOverriddenPassOptions(options); 703 } else if (option == "--include-patch-information") { 704 include_patch_information = true; 705 } else if (option == "--no-include-patch-information") { 706 include_patch_information = false; 707 } else if (option.starts_with("--verbose-methods=")) { 708 // TODO: rather than switch off compiler logging, make all VLOG(compiler) messages conditional 709 // on having verbost methods. 710 gLogVerbosity.compiler = false; 711 Split(option.substr(strlen("--verbose-methods=")).ToString(), ',', &verbose_methods_); 712 } else { 713 Usage("Unknown argument %s", option.data()); 714 } 715 } 716 717 if (compiler_kind_ == Compiler::kOptimizing) { 718 // Optimizing only supports PIC mode. 719 compile_pic = true; 720 } 721 722 if (oat_filename_.empty() && oat_fd_ == -1) { 723 Usage("Output must be supplied with either --oat-file or --oat-fd"); 724 } 725 726 if (!oat_filename_.empty() && oat_fd_ != -1) { 727 Usage("--oat-file should not be used with --oat-fd"); 728 } 729 730 if (!oat_symbols.empty() && oat_fd_ != -1) { 731 Usage("--oat-symbols should not be used with --oat-fd"); 732 } 733 734 if (!oat_symbols.empty() && is_host_) { 735 Usage("--oat-symbols should not be used with --host"); 736 } 737 738 if (oat_fd_ != -1 && !image_filename_.empty()) { 739 Usage("--oat-fd should not be used with --image"); 740 } 741 742 if (android_root_.empty()) { 743 const char* android_root_env_var = getenv("ANDROID_ROOT"); 744 if (android_root_env_var == nullptr) { 745 Usage("--android-root unspecified and ANDROID_ROOT not set"); 746 } 747 android_root_ += android_root_env_var; 748 } 749 750 image_ = (!image_filename_.empty()); 751 if (!image_ && boot_image_filename.empty()) { 752 boot_image_filename += android_root_; 753 boot_image_filename += "/framework/boot.art"; 754 } 755 if (!boot_image_filename.empty()) { 756 boot_image_option_ += "-Ximage:"; 757 boot_image_option_ += boot_image_filename; 758 } 759 760 if (image_classes_filename_ != nullptr && !image_) { 761 Usage("--image-classes should only be used with --image"); 762 } 763 764 if (image_classes_filename_ != nullptr && !boot_image_option_.empty()) { 765 Usage("--image-classes should not be used with --boot-image"); 766 } 767 768 if (image_classes_zip_filename_ != nullptr && image_classes_filename_ == nullptr) { 769 Usage("--image-classes-zip should be used with --image-classes"); 770 } 771 772 if (compiled_classes_filename_ != nullptr && !image_) { 773 Usage("--compiled-classes should only be used with --image"); 774 } 775 776 if (compiled_classes_filename_ != nullptr && !boot_image_option_.empty()) { 777 Usage("--compiled-classes should not be used with --boot-image"); 778 } 779 780 if (compiled_classes_zip_filename_ != nullptr && compiled_classes_filename_ == nullptr) { 781 Usage("--compiled-classes-zip should be used with --compiled-classes"); 782 } 783 784 if (dex_filenames_.empty() && zip_fd_ == -1) { 785 Usage("Input must be supplied with either --dex-file or --zip-fd"); 786 } 787 788 if (!dex_filenames_.empty() && zip_fd_ != -1) { 789 Usage("--dex-file should not be used with --zip-fd"); 790 } 791 792 if (!dex_filenames_.empty() && !zip_location_.empty()) { 793 Usage("--dex-file should not be used with --zip-location"); 794 } 795 796 if (dex_locations_.empty()) { 797 for (const char* dex_file_name : dex_filenames_) { 798 dex_locations_.push_back(dex_file_name); 799 } 800 } else if (dex_locations_.size() != dex_filenames_.size()) { 801 Usage("--dex-location arguments do not match --dex-file arguments"); 802 } 803 804 if (zip_fd_ != -1 && zip_location_.empty()) { 805 Usage("--zip-location should be supplied with --zip-fd"); 806 } 807 808 if (boot_image_option_.empty()) { 809 if (image_base_ == 0) { 810 Usage("Non-zero --base not specified"); 811 } 812 } 813 814 oat_stripped_ = oat_filename_; 815 if (!oat_symbols.empty()) { 816 oat_unstripped_ = oat_symbols; 817 } else { 818 oat_unstripped_ = oat_filename_; 819 } 820 821 // If no instruction set feature was given, use the default one for the target 822 // instruction set. 823 if (instruction_set_features_.get() == nullptr) { 824 instruction_set_features_.reset( 825 InstructionSetFeatures::FromVariant(instruction_set_, "default", &error_msg)); 826 if (instruction_set_features_.get() == nullptr) { 827 Usage("Problem initializing default instruction set features variant: %s", 828 error_msg.c_str()); 829 } 830 } 831 832 if (instruction_set_ == kRuntimeISA) { 833 std::unique_ptr<const InstructionSetFeatures> runtime_features( 834 InstructionSetFeatures::FromCppDefines()); 835 if (!instruction_set_features_->Equals(runtime_features.get())) { 836 LOG(WARNING) << "Mismatch between dex2oat instruction set features (" 837 << *instruction_set_features_ << ") and those of dex2oat executable (" 838 << *runtime_features <<") for the command line:\n" 839 << CommandLine(); 840 } 841 } 842 843 if (compiler_filter_string == nullptr) { 844 if (instruction_set_ == kMips64) { 845 // TODO: fix compiler for Mips64. 846 compiler_filter_string = "interpret-only"; 847 } else if (image_) { 848 compiler_filter_string = "speed"; 849 } else { 850 // TODO: Migrate SMALL mode to command line option. 851 #if ART_SMALL_MODE 852 compiler_filter_string = "interpret-only"; 853 #else 854 compiler_filter_string = "speed"; 855 #endif 856 } 857 } 858 CHECK(compiler_filter_string != nullptr); 859 CompilerOptions::CompilerFilter compiler_filter = CompilerOptions::kDefaultCompilerFilter; 860 if (strcmp(compiler_filter_string, "verify-none") == 0) { 861 compiler_filter = CompilerOptions::kVerifyNone; 862 } else if (strcmp(compiler_filter_string, "interpret-only") == 0) { 863 compiler_filter = CompilerOptions::kInterpretOnly; 864 } else if (strcmp(compiler_filter_string, "space") == 0) { 865 compiler_filter = CompilerOptions::kSpace; 866 } else if (strcmp(compiler_filter_string, "balanced") == 0) { 867 compiler_filter = CompilerOptions::kBalanced; 868 } else if (strcmp(compiler_filter_string, "speed") == 0) { 869 compiler_filter = CompilerOptions::kSpeed; 870 } else if (strcmp(compiler_filter_string, "everything") == 0) { 871 compiler_filter = CompilerOptions::kEverything; 872 } else if (strcmp(compiler_filter_string, "time") == 0) { 873 compiler_filter = CompilerOptions::kTime; 874 } else { 875 Usage("Unknown --compiler-filter value %s", compiler_filter_string); 876 } 877 878 // Checks are all explicit until we know the architecture. 879 bool implicit_null_checks = false; 880 bool implicit_so_checks = false; 881 bool implicit_suspend_checks = false; 882 // Set the compilation target's implicit checks options. 883 switch (instruction_set_) { 884 case kArm: 885 case kThumb2: 886 case kArm64: 887 case kX86: 888 case kX86_64: 889 implicit_null_checks = true; 890 implicit_so_checks = true; 891 break; 892 893 default: 894 // Defaults are correct. 895 break; 896 } 897 898 if (print_pass_options) { 899 PassDriverMEOpts::PrintPassOptions(); 900 } 901 902 compiler_options_.reset(new CompilerOptions(compiler_filter, 903 huge_method_threshold, 904 large_method_threshold, 905 small_method_threshold, 906 tiny_method_threshold, 907 num_dex_methods_threshold, 908 generate_gdb_information, 909 include_patch_information, 910 top_k_profile_threshold, 911 include_debug_symbols, 912 implicit_null_checks, 913 implicit_so_checks, 914 implicit_suspend_checks, 915 compile_pic, 916 #ifdef ART_SEA_IR_MODE 917 true, 918 #endif 919 verbose_methods_.empty() ? 920 nullptr : 921 &verbose_methods_)); 922 923 // Done with usage checks, enable watchdog if requested 924 if (watch_dog_enabled) { 925 watchdog_.reset(new WatchDog(true)); 926 } 927 928 // Fill some values into the key-value store for the oat header. 929 key_value_store_.reset(new SafeMap<std::string, std::string>()); 930 931 // Insert some compiler things. 932 { 933 std::ostringstream oss; 934 for (int i = 0; i < argc; ++i) { 935 if (i > 0) { 936 oss << ' '; 937 } 938 oss << argv[i]; 939 } 940 key_value_store_->Put(OatHeader::kDex2OatCmdLineKey, oss.str()); 941 oss.str(""); // Reset. 942 oss << kRuntimeISA; 943 key_value_store_->Put(OatHeader::kDex2OatHostKey, oss.str()); 944 key_value_store_->Put(OatHeader::kPicKey, compile_pic ? "true" : "false"); 945 } 946 } 947 948 // Check whether the oat output file is writable, and open it for later. 949 bool OpenFile() { 950 bool create_file = !oat_unstripped_.empty(); // as opposed to using open file descriptor 951 if (create_file) { 952 oat_file_.reset(OS::CreateEmptyFile(oat_unstripped_.c_str())); 953 if (oat_location_.empty()) { 954 oat_location_ = oat_filename_; 955 } 956 } else { 957 oat_file_.reset(new File(oat_fd_, oat_location_, true)); 958 oat_file_->DisableAutoClose(); 959 if (oat_file_->SetLength(0) != 0) { 960 PLOG(WARNING) << "Truncating oat file " << oat_location_ << " failed."; 961 } 962 } 963 if (oat_file_.get() == nullptr) { 964 PLOG(ERROR) << "Failed to create oat file: " << oat_location_; 965 return false; 966 } 967 if (create_file && fchmod(oat_file_->Fd(), 0644) != 0) { 968 PLOG(ERROR) << "Failed to make oat file world readable: " << oat_location_; 969 oat_file_->Erase(); 970 return false; 971 } 972 return true; 973 } 974 975 // Set up the environment for compilation. Includes starting the runtime and loading/opening the 976 // boot class path. 977 bool Setup() { 978 TimingLogger::ScopedTiming t("dex2oat Setup", timings_); 979 RuntimeOptions runtime_options; 980 std::vector<const DexFile*> boot_class_path; 981 art::MemMap::Init(); // For ZipEntry::ExtractToMemMap. 982 if (boot_image_option_.empty()) { 983 size_t failure_count = OpenDexFiles(dex_filenames_, dex_locations_, boot_class_path); 984 if (failure_count > 0) { 985 LOG(ERROR) << "Failed to open some dex files: " << failure_count; 986 return false; 987 } 988 runtime_options.push_back(std::make_pair("bootclasspath", &boot_class_path)); 989 } else { 990 runtime_options.push_back(std::make_pair(boot_image_option_.c_str(), nullptr)); 991 } 992 for (size_t i = 0; i < runtime_args_.size(); i++) { 993 runtime_options.push_back(std::make_pair(runtime_args_[i], nullptr)); 994 } 995 996 verification_results_.reset(new VerificationResults(compiler_options_.get())); 997 callbacks_.reset(new QuickCompilerCallbacks(verification_results_.get(), &method_inliner_map_)); 998 runtime_options.push_back(std::make_pair("compilercallbacks", callbacks_.get())); 999 runtime_options.push_back( 1000 std::make_pair("imageinstructionset", GetInstructionSetString(instruction_set_))); 1001 1002 if (!CreateRuntime(runtime_options)) { 1003 return false; 1004 } 1005 1006 // Runtime::Create acquired the mutator_lock_ that is normally given away when we 1007 // Runtime::Start, give it away now so that we don't starve GC. 1008 Thread* self = Thread::Current(); 1009 self->TransitionFromRunnableToSuspended(kNative); 1010 // If we're doing the image, override the compiler filter to force full compilation. Must be 1011 // done ahead of WellKnownClasses::Init that causes verification. Note: doesn't force 1012 // compilation of class initializers. 1013 // Whilst we're in native take the opportunity to initialize well known classes. 1014 WellKnownClasses::Init(self->GetJniEnv()); 1015 1016 // If --image-classes was specified, calculate the full list of classes to include in the image 1017 if (image_classes_filename_ != nullptr) { 1018 std::string error_msg; 1019 if (image_classes_zip_filename_ != nullptr) { 1020 image_classes_.reset(ReadImageClassesFromZip(image_classes_zip_filename_, 1021 image_classes_filename_, 1022 &error_msg)); 1023 } else { 1024 image_classes_.reset(ReadImageClassesFromFile(image_classes_filename_)); 1025 } 1026 if (image_classes_.get() == nullptr) { 1027 LOG(ERROR) << "Failed to create list of image classes from '" << image_classes_filename_ << 1028 "': " << error_msg; 1029 return false; 1030 } 1031 } else if (image_) { 1032 image_classes_.reset(new std::set<std::string>); 1033 } 1034 // If --compiled-classes was specified, calculate the full list of classes to compile in the 1035 // image. 1036 if (compiled_classes_filename_ != nullptr) { 1037 std::string error_msg; 1038 if (compiled_classes_zip_filename_ != nullptr) { 1039 compiled_classes_.reset(ReadImageClassesFromZip(compiled_classes_zip_filename_, 1040 compiled_classes_filename_, 1041 &error_msg)); 1042 } else { 1043 compiled_classes_.reset(ReadImageClassesFromFile(compiled_classes_filename_)); 1044 } 1045 if (compiled_classes_.get() == nullptr) { 1046 LOG(ERROR) << "Failed to create list of compiled classes from '" 1047 << compiled_classes_filename_ << "': " << error_msg; 1048 return false; 1049 } 1050 } else if (image_) { 1051 compiled_classes_.reset(nullptr); // By default compile everything. 1052 } 1053 1054 if (boot_image_option_.empty()) { 1055 dex_files_ = Runtime::Current()->GetClassLinker()->GetBootClassPath(); 1056 } else { 1057 if (dex_filenames_.empty()) { 1058 ATRACE_BEGIN("Opening zip archive from file descriptor"); 1059 std::string error_msg; 1060 std::unique_ptr<ZipArchive> zip_archive(ZipArchive::OpenFromFd(zip_fd_, 1061 zip_location_.c_str(), 1062 &error_msg)); 1063 if (zip_archive.get() == nullptr) { 1064 LOG(ERROR) << "Failed to open zip from file descriptor for '" << zip_location_ << "': " 1065 << error_msg; 1066 return false; 1067 } 1068 if (!DexFile::OpenFromZip(*zip_archive.get(), zip_location_, &error_msg, &dex_files_)) { 1069 LOG(ERROR) << "Failed to open dex from file descriptor for zip file '" << zip_location_ 1070 << "': " << error_msg; 1071 return false; 1072 } 1073 ATRACE_END(); 1074 } else { 1075 size_t failure_count = OpenDexFiles(dex_filenames_, dex_locations_, dex_files_); 1076 if (failure_count > 0) { 1077 LOG(ERROR) << "Failed to open some dex files: " << failure_count; 1078 return false; 1079 } 1080 } 1081 1082 constexpr bool kSaveDexInput = false; 1083 if (kSaveDexInput) { 1084 for (size_t i = 0; i < dex_files_.size(); ++i) { 1085 const DexFile* dex_file = dex_files_[i]; 1086 std::string tmp_file_name(StringPrintf("/data/local/tmp/dex2oat.%d.%zd.dex", getpid(), i)); 1087 std::unique_ptr<File> tmp_file(OS::CreateEmptyFile(tmp_file_name.c_str())); 1088 if (tmp_file.get() == nullptr) { 1089 PLOG(ERROR) << "Failed to open file " << tmp_file_name 1090 << ". Try: adb shell chmod 777 /data/local/tmp"; 1091 continue; 1092 } 1093 // This is just dumping files for debugging. Ignore errors, and leave remnants. 1094 UNUSED(tmp_file->WriteFully(dex_file->Begin(), dex_file->Size())); 1095 UNUSED(tmp_file->Flush()); 1096 UNUSED(tmp_file->Close()); 1097 LOG(INFO) << "Wrote input to " << tmp_file_name; 1098 } 1099 } 1100 } 1101 // Ensure opened dex files are writable for dex-to-dex transformations. 1102 for (const auto& dex_file : dex_files_) { 1103 if (!dex_file->EnableWrite()) { 1104 PLOG(ERROR) << "Failed to make .dex file writeable '" << dex_file->GetLocation() << "'\n"; 1105 } 1106 } 1107 1108 /* 1109 * If we're not in interpret-only or verify-none mode, go ahead and compile small applications. 1110 * Don't bother to check if we're doing the image. 1111 */ 1112 if (!image_ && compiler_options_->IsCompilationEnabled() && compiler_kind_ == Compiler::kQuick) { 1113 size_t num_methods = 0; 1114 for (size_t i = 0; i != dex_files_.size(); ++i) { 1115 const DexFile* dex_file = dex_files_[i]; 1116 CHECK(dex_file != nullptr); 1117 num_methods += dex_file->NumMethodIds(); 1118 } 1119 if (num_methods <= compiler_options_->GetNumDexMethodsThreshold()) { 1120 compiler_options_->SetCompilerFilter(CompilerOptions::kSpeed); 1121 VLOG(compiler) << "Below method threshold, compiling anyways"; 1122 } 1123 } 1124 1125 return true; 1126 } 1127 1128 // Create and invoke the compiler driver. This will compile all the dex files. 1129 void Compile() { 1130 TimingLogger::ScopedTiming t("dex2oat Compile", timings_); 1131 compiler_phases_timings_.reset(new CumulativeLogger("compilation times")); 1132 1133 // Handle and ClassLoader creation needs to come after Runtime::Create 1134 jobject class_loader = nullptr; 1135 Thread* self = Thread::Current(); 1136 if (!boot_image_option_.empty()) { 1137 ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 1138 std::vector<const DexFile*> class_path_files(dex_files_); 1139 OpenClassPathFiles(runtime_->GetClassPathString(), class_path_files); 1140 ScopedObjectAccess soa(self); 1141 for (size_t i = 0; i < class_path_files.size(); i++) { 1142 class_linker->RegisterDexFile(*class_path_files[i]); 1143 } 1144 soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader); 1145 ScopedLocalRef<jobject> class_loader_local(soa.Env(), 1146 soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader)); 1147 class_loader = soa.Env()->NewGlobalRef(class_loader_local.get()); 1148 Runtime::Current()->SetCompileTimeClassPath(class_loader, class_path_files); 1149 } 1150 1151 driver_.reset(new CompilerDriver(compiler_options_.get(), 1152 verification_results_.get(), 1153 &method_inliner_map_, 1154 compiler_kind_, 1155 instruction_set_, 1156 instruction_set_features_.get(), 1157 image_, 1158 image_classes_.release(), 1159 compiled_classes_.release(), 1160 thread_count_, 1161 dump_stats_, 1162 dump_passes_, 1163 compiler_phases_timings_.get(), 1164 profile_file_)); 1165 1166 driver_->GetCompiler()->SetBitcodeFileName(*driver_, bitcode_filename_); 1167 1168 driver_->CompileAll(class_loader, dex_files_, timings_); 1169 } 1170 1171 // Notes on the interleaving of creating the image and oat file to 1172 // ensure the references between the two are correct. 1173 // 1174 // Currently we have a memory layout that looks something like this: 1175 // 1176 // +--------------+ 1177 // | image | 1178 // +--------------+ 1179 // | boot oat | 1180 // +--------------+ 1181 // | alloc spaces | 1182 // +--------------+ 1183 // 1184 // There are several constraints on the loading of the image and boot.oat. 1185 // 1186 // 1. The image is expected to be loaded at an absolute address and 1187 // contains Objects with absolute pointers within the image. 1188 // 1189 // 2. There are absolute pointers from Methods in the image to their 1190 // code in the oat. 1191 // 1192 // 3. There are absolute pointers from the code in the oat to Methods 1193 // in the image. 1194 // 1195 // 4. There are absolute pointers from code in the oat to other code 1196 // in the oat. 1197 // 1198 // To get this all correct, we go through several steps. 1199 // 1200 // 1. We prepare offsets for all data in the oat file and calculate 1201 // the oat data size and code size. During this stage, we also set 1202 // oat code offsets in methods for use by the image writer. 1203 // 1204 // 2. We prepare offsets for the objects in the image and calculate 1205 // the image size. 1206 // 1207 // 3. We create the oat file. Originally this was just our own proprietary 1208 // file but now it is contained within an ELF dynamic object (aka an .so 1209 // file). Since we know the image size and oat data size and code size we 1210 // can prepare the ELF headers and we then know the ELF memory segment 1211 // layout and we can now resolve all references. The compiler provides 1212 // LinkerPatch information in each CompiledMethod and we resolve these, 1213 // using the layout information and image object locations provided by 1214 // image writer, as we're writing the method code. 1215 // 1216 // 4. We create the image file. It needs to know where the oat file 1217 // will be loaded after itself. Originally when oat file was simply 1218 // memory mapped so we could predict where its contents were based 1219 // on the file size. Now that it is an ELF file, we need to inspect 1220 // the ELF file to understand the in memory segment layout including 1221 // where the oat header is located within. 1222 // TODO: We could just remember this information from step 3. 1223 // 1224 // 5. We fixup the ELF program headers so that dlopen will try to 1225 // load the .so at the desired location at runtime by offsetting the 1226 // Elf32_Phdr.p_vaddr values by the desired base address. 1227 // TODO: Do this in step 3. We already know the layout there. 1228 // 1229 // Steps 1.-3. are done by the CreateOatFile() above, steps 4.-5. 1230 // are done by the CreateImageFile() below. 1231 1232 1233 // Write out the generated code part. Calls the OatWriter and ElfBuilder. Also prepares the 1234 // ImageWriter, if necessary. 1235 // Note: Flushing (and closing) the file is the caller's responsibility, except for the failure 1236 // case (when the file will be explicitly erased). 1237 bool CreateOatFile() { 1238 CHECK(key_value_store_.get() != nullptr); 1239 1240 TimingLogger::ScopedTiming t("dex2oat Oat", timings_); 1241 1242 std::unique_ptr<OatWriter> oat_writer; 1243 { 1244 TimingLogger::ScopedTiming t2("dex2oat OatWriter", timings_); 1245 std::string image_file_location; 1246 uint32_t image_file_location_oat_checksum = 0; 1247 uintptr_t image_file_location_oat_data_begin = 0; 1248 int32_t image_patch_delta = 0; 1249 if (image_) { 1250 PrepareImageWriter(image_base_); 1251 } else { 1252 TimingLogger::ScopedTiming t3("Loading image checksum", timings_); 1253 gc::space::ImageSpace* image_space = Runtime::Current()->GetHeap()->GetImageSpace(); 1254 image_file_location_oat_checksum = image_space->GetImageHeader().GetOatChecksum(); 1255 image_file_location_oat_data_begin = 1256 reinterpret_cast<uintptr_t>(image_space->GetImageHeader().GetOatDataBegin()); 1257 image_file_location = image_space->GetImageFilename(); 1258 image_patch_delta = image_space->GetImageHeader().GetPatchDelta(); 1259 } 1260 1261 if (!image_file_location.empty()) { 1262 key_value_store_->Put(OatHeader::kImageLocationKey, image_file_location); 1263 } 1264 1265 oat_writer.reset(new OatWriter(dex_files_, image_file_location_oat_checksum, 1266 image_file_location_oat_data_begin, 1267 image_patch_delta, 1268 driver_.get(), 1269 image_writer_.get(), 1270 timings_, 1271 key_value_store_.get())); 1272 } 1273 1274 if (image_) { 1275 // The OatWriter constructor has already updated offsets in methods and we need to 1276 // prepare method offsets in the image address space for direct method patching. 1277 TimingLogger::ScopedTiming t2("dex2oat Prepare image address space", timings_); 1278 if (!image_writer_->PrepareImageAddressSpace()) { 1279 LOG(ERROR) << "Failed to prepare image address space."; 1280 return false; 1281 } 1282 } 1283 1284 { 1285 TimingLogger::ScopedTiming t2("dex2oat Write ELF", timings_); 1286 if (!driver_->WriteElf(android_root_, is_host_, dex_files_, oat_writer.get(), 1287 oat_file_.get())) { 1288 LOG(ERROR) << "Failed to write ELF file " << oat_file_->GetPath(); 1289 oat_file_->Erase(); 1290 return false; 1291 } 1292 } 1293 1294 VLOG(compiler) << "Oat file written successfully (unstripped): " << oat_location_; 1295 return true; 1296 } 1297 1298 // If we are compiling an image, invoke the image creation routine. Else just skip. 1299 bool HandleImage() { 1300 if (image_) { 1301 TimingLogger::ScopedTiming t("dex2oat ImageWriter", timings_); 1302 if (!CreateImageFile()) { 1303 return false; 1304 } 1305 VLOG(compiler) << "Image written successfully: " << image_filename_; 1306 } 1307 return true; 1308 } 1309 1310 // Create a copy from unstripped to stripped. 1311 bool CopyUnstrippedToStripped() { 1312 // If we don't want to strip in place, copy from unstripped location to stripped location. 1313 // We need to strip after image creation because FixupElf needs to use .strtab. 1314 if (oat_unstripped_ != oat_stripped_) { 1315 // If the oat file is still open, flush it. 1316 if (oat_file_.get() != nullptr && oat_file_->IsOpened()) { 1317 if (!FlushCloseOatFile()) { 1318 return false; 1319 } 1320 } 1321 1322 TimingLogger::ScopedTiming t("dex2oat OatFile copy", timings_); 1323 std::unique_ptr<File> in(OS::OpenFileForReading(oat_unstripped_.c_str())); 1324 std::unique_ptr<File> out(OS::CreateEmptyFile(oat_stripped_.c_str())); 1325 size_t buffer_size = 8192; 1326 std::unique_ptr<uint8_t> buffer(new uint8_t[buffer_size]); 1327 while (true) { 1328 int bytes_read = TEMP_FAILURE_RETRY(read(in->Fd(), buffer.get(), buffer_size)); 1329 if (bytes_read <= 0) { 1330 break; 1331 } 1332 bool write_ok = out->WriteFully(buffer.get(), bytes_read); 1333 CHECK(write_ok); 1334 } 1335 if (kUsePortableCompiler) { 1336 oat_file_.reset(out.release()); 1337 } else { 1338 if (out->FlushCloseOrErase() != 0) { 1339 PLOG(ERROR) << "Failed to flush and close copied oat file: " << oat_stripped_; 1340 return false; 1341 } 1342 } 1343 VLOG(compiler) << "Oat file copied successfully (stripped): " << oat_stripped_; 1344 } 1345 return true; 1346 } 1347 1348 // Run the ElfStripper. Currently only relevant for the portable compiler. 1349 bool Strip() { 1350 if (kUsePortableCompiler) { 1351 // Portable includes debug symbols unconditionally. If we are not supposed to create them, 1352 // strip them now. Quick generates debug symbols only when the flag(s) are set. 1353 if (!compiler_options_->GetIncludeDebugSymbols()) { 1354 CHECK(oat_file_.get() != nullptr && oat_file_->IsOpened()); 1355 1356 TimingLogger::ScopedTiming t("dex2oat ElfStripper", timings_); 1357 // Strip unneeded sections for target 1358 off_t seek_actual = lseek(oat_file_->Fd(), 0, SEEK_SET); 1359 CHECK_EQ(0, seek_actual); 1360 std::string error_msg; 1361 if (!ElfFile::Strip(oat_file_.get(), &error_msg)) { 1362 LOG(ERROR) << "Failed to strip elf file: " << error_msg; 1363 oat_file_->Erase(); 1364 return false; 1365 } 1366 1367 if (!FlushCloseOatFile()) { 1368 return false; 1369 } 1370 1371 // We wrote the oat file successfully, and want to keep it. 1372 VLOG(compiler) << "Oat file written successfully (stripped): " << oat_location_; 1373 } else { 1374 VLOG(compiler) << "Oat file written successfully without stripping: " << oat_location_; 1375 } 1376 } 1377 1378 return true; 1379 } 1380 1381 bool FlushOatFile() { 1382 if (oat_file_.get() != nullptr) { 1383 TimingLogger::ScopedTiming t2("dex2oat Flush ELF", timings_); 1384 if (oat_file_->Flush() != 0) { 1385 PLOG(ERROR) << "Failed to flush oat file: " << oat_location_ << " / " 1386 << oat_filename_; 1387 oat_file_->Erase(); 1388 return false; 1389 } 1390 } 1391 return true; 1392 } 1393 1394 bool FlushCloseOatFile() { 1395 if (oat_file_.get() != nullptr) { 1396 std::unique_ptr<File> tmp(oat_file_.release()); 1397 if (tmp->FlushCloseOrErase() != 0) { 1398 PLOG(ERROR) << "Failed to flush and close oat file: " << oat_location_ << " / " 1399 << oat_filename_; 1400 return false; 1401 } 1402 } 1403 return true; 1404 } 1405 1406 void DumpTiming() { 1407 if (dump_timing_ || (dump_slow_timing_ && timings_->GetTotalNs() > MsToNs(1000))) { 1408 LOG(INFO) << Dumpable<TimingLogger>(*timings_); 1409 } 1410 if (dump_passes_) { 1411 LOG(INFO) << Dumpable<CumulativeLogger>(*driver_->GetTimingsLogger()); 1412 } 1413 } 1414 1415 CompilerOptions* GetCompilerOptions() const { 1416 return compiler_options_.get(); 1417 } 1418 1419 bool IsImage() const { 1420 return image_; 1421 } 1422 1423 bool IsHost() const { 1424 return is_host_; 1425 } 1426 1427 private: 1428 static size_t OpenDexFiles(const std::vector<const char*>& dex_filenames, 1429 const std::vector<const char*>& dex_locations, 1430 std::vector<const DexFile*>& dex_files) { 1431 size_t failure_count = 0; 1432 for (size_t i = 0; i < dex_filenames.size(); i++) { 1433 const char* dex_filename = dex_filenames[i]; 1434 const char* dex_location = dex_locations[i]; 1435 ATRACE_BEGIN(StringPrintf("Opening dex file '%s'", dex_filenames[i]).c_str()); 1436 std::string error_msg; 1437 if (!OS::FileExists(dex_filename)) { 1438 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 1439 continue; 1440 } 1441 if (!DexFile::Open(dex_filename, dex_location, &error_msg, &dex_files)) { 1442 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 1443 ++failure_count; 1444 } 1445 ATRACE_END(); 1446 } 1447 return failure_count; 1448 } 1449 1450 // Returns true if dex_files has a dex with the named location. 1451 static bool DexFilesContains(const std::vector<const DexFile*>& dex_files, 1452 const std::string& location) { 1453 for (size_t i = 0; i < dex_files.size(); ++i) { 1454 if (dex_files[i]->GetLocation() == location) { 1455 return true; 1456 } 1457 } 1458 return false; 1459 } 1460 1461 // Appends to dex_files any elements of class_path that it doesn't already 1462 // contain. This will open those dex files as necessary. 1463 static void OpenClassPathFiles(const std::string& class_path, 1464 std::vector<const DexFile*>& dex_files) { 1465 std::vector<std::string> parsed; 1466 Split(class_path, ':', &parsed); 1467 // Take Locks::mutator_lock_ so that lock ordering on the ClassLinker::dex_lock_ is maintained. 1468 ScopedObjectAccess soa(Thread::Current()); 1469 for (size_t i = 0; i < parsed.size(); ++i) { 1470 if (DexFilesContains(dex_files, parsed[i])) { 1471 continue; 1472 } 1473 std::string error_msg; 1474 if (!DexFile::Open(parsed[i].c_str(), parsed[i].c_str(), &error_msg, &dex_files)) { 1475 LOG(WARNING) << "Failed to open dex file '" << parsed[i] << "': " << error_msg; 1476 } 1477 } 1478 } 1479 1480 // Create a runtime necessary for compilation. 1481 bool CreateRuntime(const RuntimeOptions& runtime_options) 1482 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_) { 1483 if (!Runtime::Create(runtime_options, false)) { 1484 LOG(ERROR) << "Failed to create runtime"; 1485 return false; 1486 } 1487 Runtime* runtime = Runtime::Current(); 1488 runtime->SetInstructionSet(instruction_set_); 1489 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 1490 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 1491 if (!runtime->HasCalleeSaveMethod(type)) { 1492 runtime->SetCalleeSaveMethod(runtime->CreateCalleeSaveMethod(), type); 1493 } 1494 } 1495 runtime->GetClassLinker()->FixupDexCaches(runtime->GetResolutionMethod()); 1496 runtime->GetClassLinker()->RunRootClinits(); 1497 runtime_ = runtime; 1498 return true; 1499 } 1500 1501 void PrepareImageWriter(uintptr_t image_base) { 1502 image_writer_.reset(new ImageWriter(*driver_, image_base, compiler_options_->GetCompilePic())); 1503 } 1504 1505 // Let the ImageWriter write the image file. If we do not compile PIC, also fix up the oat file. 1506 bool CreateImageFile() 1507 LOCKS_EXCLUDED(Locks::mutator_lock_) { 1508 CHECK(image_writer_ != nullptr); 1509 if (!image_writer_->Write(image_filename_, oat_unstripped_, oat_location_)) { 1510 LOG(ERROR) << "Failed to create image file " << image_filename_; 1511 return false; 1512 } 1513 uintptr_t oat_data_begin = image_writer_->GetOatDataBegin(); 1514 1515 // Destroy ImageWriter before doing FixupElf. 1516 image_writer_.reset(); 1517 1518 // Do not fix up the ELF file if we are --compile-pic 1519 if (!compiler_options_->GetCompilePic()) { 1520 std::unique_ptr<File> oat_file(OS::OpenFileReadWrite(oat_unstripped_.c_str())); 1521 if (oat_file.get() == nullptr) { 1522 PLOG(ERROR) << "Failed to open ELF file: " << oat_unstripped_; 1523 return false; 1524 } 1525 1526 if (!ElfWriter::Fixup(oat_file.get(), oat_data_begin)) { 1527 oat_file->Erase(); 1528 LOG(ERROR) << "Failed to fixup ELF file " << oat_file->GetPath(); 1529 return false; 1530 } 1531 1532 if (oat_file->FlushCloseOrErase()) { 1533 PLOG(ERROR) << "Failed to flush and close fixed ELF file " << oat_file->GetPath(); 1534 return false; 1535 } 1536 } 1537 1538 return true; 1539 } 1540 1541 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 1542 static std::set<std::string>* ReadImageClassesFromFile(const char* image_classes_filename) { 1543 std::unique_ptr<std::ifstream> image_classes_file(new std::ifstream(image_classes_filename, 1544 std::ifstream::in)); 1545 if (image_classes_file.get() == nullptr) { 1546 LOG(ERROR) << "Failed to open image classes file " << image_classes_filename; 1547 return nullptr; 1548 } 1549 std::unique_ptr<std::set<std::string>> result(ReadImageClasses(*image_classes_file)); 1550 image_classes_file->close(); 1551 return result.release(); 1552 } 1553 1554 static std::set<std::string>* ReadImageClasses(std::istream& image_classes_stream) { 1555 std::unique_ptr<std::set<std::string>> image_classes(new std::set<std::string>); 1556 while (image_classes_stream.good()) { 1557 std::string dot; 1558 std::getline(image_classes_stream, dot); 1559 if (StartsWith(dot, "#") || dot.empty()) { 1560 continue; 1561 } 1562 std::string descriptor(DotToDescriptor(dot.c_str())); 1563 image_classes->insert(descriptor); 1564 } 1565 return image_classes.release(); 1566 } 1567 1568 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 1569 static std::set<std::string>* ReadImageClassesFromZip(const char* zip_filename, 1570 const char* image_classes_filename, 1571 std::string* error_msg) { 1572 std::unique_ptr<ZipArchive> zip_archive(ZipArchive::Open(zip_filename, error_msg)); 1573 if (zip_archive.get() == nullptr) { 1574 return nullptr; 1575 } 1576 std::unique_ptr<ZipEntry> zip_entry(zip_archive->Find(image_classes_filename, error_msg)); 1577 if (zip_entry.get() == nullptr) { 1578 *error_msg = StringPrintf("Failed to find '%s' within '%s': %s", image_classes_filename, 1579 zip_filename, error_msg->c_str()); 1580 return nullptr; 1581 } 1582 std::unique_ptr<MemMap> image_classes_file(zip_entry->ExtractToMemMap(zip_filename, 1583 image_classes_filename, 1584 error_msg)); 1585 if (image_classes_file.get() == nullptr) { 1586 *error_msg = StringPrintf("Failed to extract '%s' from '%s': %s", image_classes_filename, 1587 zip_filename, error_msg->c_str()); 1588 return nullptr; 1589 } 1590 const std::string image_classes_string(reinterpret_cast<char*>(image_classes_file->Begin()), 1591 image_classes_file->Size()); 1592 std::istringstream image_classes_stream(image_classes_string); 1593 return ReadImageClasses(image_classes_stream); 1594 } 1595 1596 void LogCompletionTime() const { 1597 LOG(INFO) << "dex2oat took " << PrettyDuration(NanoTime() - start_ns_) 1598 << " (threads: " << thread_count_ << ")"; 1599 } 1600 1601 std::unique_ptr<CompilerOptions> compiler_options_; 1602 Compiler::Kind compiler_kind_; 1603 1604 InstructionSet instruction_set_; 1605 std::unique_ptr<const InstructionSetFeatures> instruction_set_features_; 1606 1607 std::unique_ptr<SafeMap<std::string, std::string> > key_value_store_; 1608 1609 std::unique_ptr<VerificationResults> verification_results_; 1610 DexFileToMethodInlinerMap method_inliner_map_; 1611 std::unique_ptr<QuickCompilerCallbacks> callbacks_; 1612 1613 // Not a unique_ptr as we want to just exit on non-debug builds, not bringing the runtime down 1614 // in an orderly fashion. The destructor takes care of deleting this. 1615 Runtime* runtime_; 1616 1617 size_t thread_count_; 1618 uint64_t start_ns_; 1619 std::unique_ptr<WatchDog> watchdog_; 1620 std::unique_ptr<File> oat_file_; 1621 std::string oat_stripped_; 1622 std::string oat_unstripped_; 1623 std::string oat_location_; 1624 std::string oat_filename_; 1625 int oat_fd_; 1626 std::string bitcode_filename_; 1627 std::vector<const char*> dex_filenames_; 1628 std::vector<const char*> dex_locations_; 1629 int zip_fd_; 1630 std::string zip_location_; 1631 std::string boot_image_option_; 1632 std::vector<const char*> runtime_args_; 1633 std::string image_filename_; 1634 uintptr_t image_base_; 1635 const char* image_classes_zip_filename_; 1636 const char* image_classes_filename_; 1637 const char* compiled_classes_zip_filename_; 1638 const char* compiled_classes_filename_; 1639 std::unique_ptr<std::set<std::string>> image_classes_; 1640 std::unique_ptr<std::set<std::string>> compiled_classes_; 1641 bool image_; 1642 std::unique_ptr<ImageWriter> image_writer_; 1643 bool is_host_; 1644 std::string android_root_; 1645 std::vector<const DexFile*> dex_files_; 1646 std::unique_ptr<CompilerDriver> driver_; 1647 std::vector<std::string> verbose_methods_; 1648 bool dump_stats_; 1649 bool dump_passes_; 1650 bool dump_timing_; 1651 bool dump_slow_timing_; 1652 std::string profile_file_; // Profile file to use 1653 TimingLogger* timings_; 1654 std::unique_ptr<CumulativeLogger> compiler_phases_timings_; 1655 1656 DISALLOW_IMPLICIT_CONSTRUCTORS(Dex2Oat); 1657}; 1658 1659const unsigned int WatchDog::kWatchDogWarningSeconds; 1660const unsigned int WatchDog::kWatchDogTimeoutSeconds; 1661 1662static void b13564922() { 1663#if defined(__linux__) && defined(__arm__) 1664 int major, minor; 1665 struct utsname uts; 1666 if (uname(&uts) != -1 && 1667 sscanf(uts.release, "%d.%d", &major, &minor) == 2 && 1668 ((major < 3) || ((major == 3) && (minor < 4)))) { 1669 // Kernels before 3.4 don't handle the ASLR well and we can run out of address 1670 // space (http://b/13564922). Work around the issue by inhibiting further mmap() randomization. 1671 int old_personality = personality(0xffffffff); 1672 if ((old_personality & ADDR_NO_RANDOMIZE) == 0) { 1673 int new_personality = personality(old_personality | ADDR_NO_RANDOMIZE); 1674 if (new_personality == -1) { 1675 LOG(WARNING) << "personality(. | ADDR_NO_RANDOMIZE) failed."; 1676 } 1677 } 1678 } 1679#endif 1680} 1681 1682static int CompileImage(Dex2Oat& dex2oat) { 1683 dex2oat.Compile(); 1684 1685 // Create the boot.oat. 1686 if (!dex2oat.CreateOatFile()) { 1687 return EXIT_FAILURE; 1688 } 1689 1690 // Flush and close the boot.oat. We always expect the output file by name, and it will be 1691 // re-opened from the unstripped name. 1692 if (!dex2oat.FlushCloseOatFile()) { 1693 return EXIT_FAILURE; 1694 } 1695 1696 // Creates the boot.art and patches the boot.oat. 1697 if (!dex2oat.HandleImage()) { 1698 return EXIT_FAILURE; 1699 } 1700 1701 // When given --host, finish early without stripping. 1702 if (dex2oat.IsHost()) { 1703 dex2oat.DumpTiming(); 1704 return EXIT_SUCCESS; 1705 } 1706 1707 // Copy unstripped to stripped location, if necessary. 1708 if (!dex2oat.CopyUnstrippedToStripped()) { 1709 return EXIT_FAILURE; 1710 } 1711 1712 // Strip, if necessary. 1713 if (!dex2oat.Strip()) { 1714 return EXIT_FAILURE; 1715 } 1716 1717 // FlushClose again, as stripping might have re-opened the oat file. 1718 if (!dex2oat.FlushCloseOatFile()) { 1719 return EXIT_FAILURE; 1720 } 1721 1722 dex2oat.DumpTiming(); 1723 return EXIT_SUCCESS; 1724} 1725 1726static int CompileApp(Dex2Oat& dex2oat) { 1727 dex2oat.Compile(); 1728 1729 // Create the app oat. 1730 if (!dex2oat.CreateOatFile()) { 1731 return EXIT_FAILURE; 1732 } 1733 1734 // Do not close the oat file here. We might haven gotten the output file by file descriptor, 1735 // which we would lose. 1736 if (!dex2oat.FlushOatFile()) { 1737 return EXIT_FAILURE; 1738 } 1739 1740 // When given --host, finish early without stripping. 1741 if (dex2oat.IsHost()) { 1742 if (!dex2oat.FlushCloseOatFile()) { 1743 return EXIT_FAILURE; 1744 } 1745 1746 dex2oat.DumpTiming(); 1747 return EXIT_SUCCESS; 1748 } 1749 1750 // Copy unstripped to stripped location, if necessary. This will implicitly flush & close the 1751 // unstripped version. If this is given, we expect to be able to open writable files by name. 1752 if (!dex2oat.CopyUnstrippedToStripped()) { 1753 return EXIT_FAILURE; 1754 } 1755 1756 // Strip, if necessary. 1757 if (!dex2oat.Strip()) { 1758 return EXIT_FAILURE; 1759 } 1760 1761 // Flush and close the file. 1762 if (!dex2oat.FlushCloseOatFile()) { 1763 return EXIT_FAILURE; 1764 } 1765 1766 dex2oat.DumpTiming(); 1767 return EXIT_SUCCESS; 1768} 1769 1770static int dex2oat(int argc, char** argv) { 1771 b13564922(); 1772 1773 TimingLogger timings("compiler", false, false); 1774 1775 Dex2Oat dex2oat(&timings); 1776 1777 // Parse arguments. Argument mistakes will lead to exit(EXIT_FAILURE) in UsageError. 1778 dex2oat.ParseArgs(argc, argv); 1779 1780 // Check early that the result of compilation can be written 1781 if (!dex2oat.OpenFile()) { 1782 return EXIT_FAILURE; 1783 } 1784 1785 LOG(INFO) << CommandLine(); 1786 1787 if (!dex2oat.Setup()) { 1788 return EXIT_FAILURE; 1789 } 1790 1791 if (dex2oat.IsImage()) { 1792 return CompileImage(dex2oat); 1793 } else { 1794 return CompileApp(dex2oat); 1795 } 1796} 1797} // namespace art 1798 1799int main(int argc, char** argv) { 1800 int result = art::dex2oat(argc, argv); 1801 // Everything was done, do an explicit exit here to avoid running Runtime destructors that take 1802 // time (bug 10645725) unless we're a debug build or running on valgrind. Note: The Dex2Oat class 1803 // should not destruct the runtime in this case. 1804 if (!art::kIsDebugBuild && (RUNNING_ON_VALGRIND == 0)) { 1805 exit(result); 1806 } 1807 return result; 1808} 1809