dex2oat.cc revision d582fa4ea62083a7598dded5b82dc2198b3daac7
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 UsageError(" Default: Quick"); 169 UsageError(""); 170 UsageError(" --compiler-filter=" 171 "(verify-none" 172 "|interpret-only" 173 "|space" 174 "|balanced" 175 "|speed" 176 "|everything" 177 "|time):"); 178 UsageError(" select compiler filter."); 179 UsageError(" Example: --compiler-filter=everything"); 180#if ART_SMALL_MODE 181 UsageError(" Default: interpret-only"); 182#else 183 UsageError(" Default: speed"); 184#endif 185 UsageError(""); 186 UsageError(" --huge-method-max=<method-instruction-count>: the threshold size for a huge"); 187 UsageError(" method for compiler filter tuning."); 188 UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold); 189 UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold); 190 UsageError(""); 191 UsageError(" --huge-method-max=<method-instruction-count>: threshold size for a huge"); 192 UsageError(" method for compiler filter tuning."); 193 UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold); 194 UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold); 195 UsageError(""); 196 UsageError(" --large-method-max=<method-instruction-count>: threshold size for a large"); 197 UsageError(" method for compiler filter tuning."); 198 UsageError(" Example: --large-method-max=%d", CompilerOptions::kDefaultLargeMethodThreshold); 199 UsageError(" Default: %d", CompilerOptions::kDefaultLargeMethodThreshold); 200 UsageError(""); 201 UsageError(" --small-method-max=<method-instruction-count>: threshold size for a small"); 202 UsageError(" method for compiler filter tuning."); 203 UsageError(" Example: --small-method-max=%d", CompilerOptions::kDefaultSmallMethodThreshold); 204 UsageError(" Default: %d", CompilerOptions::kDefaultSmallMethodThreshold); 205 UsageError(""); 206 UsageError(" --tiny-method-max=<method-instruction-count>: threshold size for a tiny"); 207 UsageError(" method for compiler filter tuning."); 208 UsageError(" Example: --tiny-method-max=%d", CompilerOptions::kDefaultTinyMethodThreshold); 209 UsageError(" Default: %d", CompilerOptions::kDefaultTinyMethodThreshold); 210 UsageError(""); 211 UsageError(" --num-dex-methods=<method-count>: threshold size for a small dex file for"); 212 UsageError(" compiler filter tuning. If the input has fewer than this many methods"); 213 UsageError(" and the filter is not interpret-only or verify-none, overrides the"); 214 UsageError(" filter to use speed"); 215 UsageError(" Example: --num-dex-method=%d", CompilerOptions::kDefaultNumDexMethodsThreshold); 216 UsageError(" Default: %d", CompilerOptions::kDefaultNumDexMethodsThreshold); 217 UsageError(""); 218 UsageError(" --host: used with Portable backend to link against host runtime libraries"); 219 UsageError(""); 220 UsageError(" --dump-timing: display a breakdown of where time was spent"); 221 UsageError(""); 222 UsageError(" --include-patch-information: Include patching information so the generated code"); 223 UsageError(" can have its base address moved without full recompilation."); 224 UsageError(""); 225 UsageError(" --no-include-patch-information: Do not include patching information."); 226 UsageError(""); 227 UsageError(" --include-debug-symbols: Include ELF symbols in this oat file"); 228 UsageError(""); 229 UsageError(" --no-include-debug-symbols: Do not include ELF symbols in this oat file"); 230 UsageError(""); 231 UsageError(" --runtime-arg <argument>: used to specify various arguments for the runtime,"); 232 UsageError(" such as initial heap size, maximum heap size, and verbose output."); 233 UsageError(" Use a separate --runtime-arg switch for each argument."); 234 UsageError(" Example: --runtime-arg -Xms256m"); 235 UsageError(""); 236 UsageError(" --profile-file=<filename>: specify profiler output file to use for compilation."); 237 UsageError(""); 238 UsageError(" --print-pass-names: print a list of pass names"); 239 UsageError(""); 240 UsageError(" --disable-passes=<pass-names>: disable one or more passes separated by comma."); 241 UsageError(" Example: --disable-passes=UseCount,BBOptimizations"); 242 UsageError(""); 243 UsageError(" --print-pass-options: print a list of passes that have configurable options along " 244 "with the setting."); 245 UsageError(" Will print default if no overridden setting exists."); 246 UsageError(""); 247 UsageError(" --pass-options=Pass1Name:Pass1OptionName:Pass1Option#," 248 "Pass2Name:Pass2OptionName:Pass2Option#"); 249 UsageError(" Used to specify a pass specific option. The setting itself must be integer."); 250 UsageError(" Separator used between options is a comma."); 251 UsageError(""); 252 std::cerr << "See log for usage error information\n"; 253 exit(EXIT_FAILURE); 254} 255 256// The primary goal of the watchdog is to prevent stuck build servers 257// during development when fatal aborts lead to a cascade of failures 258// that result in a deadlock. 259class WatchDog { 260// WatchDog defines its own CHECK_PTHREAD_CALL to avoid using Log which uses locks 261#undef CHECK_PTHREAD_CALL 262#define CHECK_WATCH_DOG_PTHREAD_CALL(call, args, what) \ 263 do { \ 264 int rc = call args; \ 265 if (rc != 0) { \ 266 errno = rc; \ 267 std::string message(# call); \ 268 message += " failed for "; \ 269 message += reason; \ 270 Fatal(message); \ 271 } \ 272 } while (false) 273 274 public: 275 explicit WatchDog(bool is_watch_dog_enabled) { 276 is_watch_dog_enabled_ = is_watch_dog_enabled; 277 if (!is_watch_dog_enabled_) { 278 return; 279 } 280 shutting_down_ = false; 281 const char* reason = "dex2oat watch dog thread startup"; 282 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_init, (&mutex_, nullptr), reason); 283 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_init, (&cond_, nullptr), reason); 284 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_init, (&attr_), reason); 285 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_create, (&pthread_, &attr_, &CallBack, this), reason); 286 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_destroy, (&attr_), reason); 287 } 288 ~WatchDog() { 289 if (!is_watch_dog_enabled_) { 290 return; 291 } 292 const char* reason = "dex2oat watch dog thread shutdown"; 293 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 294 shutting_down_ = true; 295 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_signal, (&cond_), reason); 296 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 297 298 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_join, (pthread_, nullptr), reason); 299 300 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_destroy, (&cond_), reason); 301 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_destroy, (&mutex_), reason); 302 } 303 304 private: 305 static void* CallBack(void* arg) { 306 WatchDog* self = reinterpret_cast<WatchDog*>(arg); 307 ::art::SetThreadName("dex2oat watch dog"); 308 self->Wait(); 309 return nullptr; 310 } 311 312 static void Message(char severity, const std::string& message) { 313 // TODO: Remove when we switch to LOG when we can guarantee it won't prevent shutdown in error 314 // cases. 315 fprintf(stderr, "dex2oat%s %c %d %d %s\n", 316 kIsDebugBuild ? "d" : "", 317 severity, 318 getpid(), 319 GetTid(), 320 message.c_str()); 321 } 322 323 static void Warn(const std::string& message) { 324 Message('W', message); 325 } 326 327 [[noreturn]] static void Fatal(const std::string& message) { 328 Message('F', message); 329 exit(1); 330 } 331 332 void Wait() { 333 bool warning = true; 334 CHECK_GT(kWatchDogTimeoutSeconds, kWatchDogWarningSeconds); 335 // TODO: tune the multiplier for GC verification, the following is just to make the timeout 336 // large. 337 int64_t multiplier = kVerifyObjectSupport > kVerifyObjectModeFast ? 100 : 1; 338 timespec warning_ts; 339 InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogWarningSeconds * 1000, 0, &warning_ts); 340 timespec timeout_ts; 341 InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogTimeoutSeconds * 1000, 0, &timeout_ts); 342 const char* reason = "dex2oat watch dog thread waiting"; 343 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason); 344 while (!shutting_down_) { 345 int rc = TEMP_FAILURE_RETRY(pthread_cond_timedwait(&cond_, &mutex_, 346 warning ? &warning_ts 347 : &timeout_ts)); 348 if (rc == ETIMEDOUT) { 349 std::string message(StringPrintf("dex2oat did not finish after %d seconds", 350 warning ? kWatchDogWarningSeconds 351 : kWatchDogTimeoutSeconds)); 352 if (warning) { 353 Warn(message.c_str()); 354 warning = false; 355 } else { 356 Fatal(message.c_str()); 357 } 358 } else if (rc != 0) { 359 std::string message(StringPrintf("pthread_cond_timedwait failed: %s", 360 strerror(errno))); 361 Fatal(message.c_str()); 362 } 363 } 364 CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason); 365 } 366 367 // When setting timeouts, keep in mind that the build server may not be as fast as your desktop. 368 // Debug builds are slower so they have larger timeouts. 369 static const unsigned int kSlowdownFactor = kIsDebugBuild ? 5U : 1U; 370 371 static const unsigned int kWatchDogWarningSeconds = kUsePortableCompiler ? 372 kSlowdownFactor * 2 * 60 : // 2 minutes scaled by kSlowdownFactor (portable). 373 kSlowdownFactor * 1 * 60; // 1 minute scaled by kSlowdownFactor (not-portable). 374 static const unsigned int kWatchDogTimeoutSeconds = kUsePortableCompiler ? 375 kSlowdownFactor * 30 * 60 : // 30 minutes scaled by kSlowdownFactor (portable). 376 kSlowdownFactor * 6 * 60; // 6 minutes scaled by kSlowdownFactor (not-portable). 377 378 bool is_watch_dog_enabled_; 379 bool shutting_down_; 380 // TODO: Switch to Mutex when we can guarantee it won't prevent shutdown in error cases. 381 pthread_mutex_t mutex_; 382 pthread_cond_t cond_; 383 pthread_attr_t attr_; 384 pthread_t pthread_; 385}; 386 387static void ParseStringAfterChar(const std::string& s, char c, std::string* parsed_value) { 388 std::string::size_type colon = s.find(c); 389 if (colon == std::string::npos) { 390 Usage("Missing char %c in option %s\n", c, s.c_str()); 391 } 392 // Add one to remove the char we were trimming until. 393 *parsed_value = s.substr(colon + 1); 394} 395 396static void ParseDouble(const std::string& option, char after_char, double min, double max, 397 double* parsed_value) { 398 std::string substring; 399 ParseStringAfterChar(option, after_char, &substring); 400 bool sane_val = true; 401 double value; 402 if (false) { 403 // TODO: this doesn't seem to work on the emulator. b/15114595 404 std::stringstream iss(substring); 405 iss >> value; 406 // Ensure that we have a value, there was no cruft after it and it satisfies a sensible range. 407 sane_val = iss.eof() && (value >= min) && (value <= max); 408 } else { 409 char* end = nullptr; 410 value = strtod(substring.c_str(), &end); 411 sane_val = *end == '\0' && value >= min && value <= max; 412 } 413 if (!sane_val) { 414 Usage("Invalid double value %s for option %s\n", substring.c_str(), option.c_str()); 415 } 416 *parsed_value = value; 417} 418 419class Dex2Oat FINAL { 420 public: 421 explicit Dex2Oat(TimingLogger* timings) : 422 compiler_kind_(kUsePortableCompiler ? Compiler::kPortable : Compiler::kQuick), 423 instruction_set_(kRuntimeISA), 424 // Take the default set of instruction features from the build. 425 method_inliner_map_(), 426 runtime_(nullptr), 427 thread_count_(sysconf(_SC_NPROCESSORS_CONF)), 428 start_ns_(NanoTime()), 429 oat_fd_(-1), 430 zip_fd_(-1), 431 image_base_(0U), 432 image_classes_zip_filename_(nullptr), 433 image_classes_filename_(nullptr), 434 compiled_classes_zip_filename_(nullptr), 435 compiled_classes_filename_(nullptr), 436 image_(false), 437 is_host_(false), 438 dump_stats_(false), 439 dump_passes_(false), 440 dump_timing_(false), 441 dump_slow_timing_(kIsDebugBuild), 442 timings_(timings) {} 443 444 ~Dex2Oat() { 445 if (kIsDebugBuild || (RUNNING_ON_VALGRIND != 0)) { 446 delete runtime_; // See field declaration for why this is manual. 447 } 448 LogCompletionTime(); 449 } 450 451 // Parse the arguments from the command line. In case of an unrecognized option or impossible 452 // values/combinations, a usage error will be displayed and exit() is called. Thus, if the method 453 // returns, arguments have been successfully parsed. 454 void ParseArgs(int argc, char** argv) { 455 original_argc = argc; 456 original_argv = argv; 457 458 InitLogging(argv); 459 460 // Skip over argv[0]. 461 argv++; 462 argc--; 463 464 if (argc == 0) { 465 Usage("No arguments specified"); 466 } 467 468 std::string oat_symbols; 469 std::string boot_image_filename; 470 const char* compiler_filter_string = nullptr; 471 bool compile_pic = false; 472 int huge_method_threshold = CompilerOptions::kDefaultHugeMethodThreshold; 473 int large_method_threshold = CompilerOptions::kDefaultLargeMethodThreshold; 474 int small_method_threshold = CompilerOptions::kDefaultSmallMethodThreshold; 475 int tiny_method_threshold = CompilerOptions::kDefaultTinyMethodThreshold; 476 int num_dex_methods_threshold = CompilerOptions::kDefaultNumDexMethodsThreshold; 477 478 // Profile file to use 479 double top_k_profile_threshold = CompilerOptions::kDefaultTopKProfileThreshold; 480 481 bool print_pass_options = false; 482 bool include_patch_information = CompilerOptions::kDefaultIncludePatchInformation; 483 bool include_debug_symbols = kIsDebugBuild; 484 bool watch_dog_enabled = true; 485 bool generate_gdb_information = kIsDebugBuild; 486 487 std::string error_msg; 488 489 for (int i = 0; i < argc; i++) { 490 const StringPiece option(argv[i]); 491 const bool log_options = false; 492 if (log_options) { 493 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 494 } 495 if (option.starts_with("--dex-file=")) { 496 dex_filenames_.push_back(option.substr(strlen("--dex-file=")).data()); 497 } else if (option.starts_with("--dex-location=")) { 498 dex_locations_.push_back(option.substr(strlen("--dex-location=")).data()); 499 } else if (option.starts_with("--zip-fd=")) { 500 const char* zip_fd_str = option.substr(strlen("--zip-fd=")).data(); 501 if (!ParseInt(zip_fd_str, &zip_fd_)) { 502 Usage("Failed to parse --zip-fd argument '%s' as an integer", zip_fd_str); 503 } 504 if (zip_fd_ < 0) { 505 Usage("--zip-fd passed a negative value %d", zip_fd_); 506 } 507 } else if (option.starts_with("--zip-location=")) { 508 zip_location_ = option.substr(strlen("--zip-location=")).data(); 509 } else if (option.starts_with("--oat-file=")) { 510 oat_filename_ = option.substr(strlen("--oat-file=")).data(); 511 } else if (option.starts_with("--oat-symbols=")) { 512 oat_symbols = option.substr(strlen("--oat-symbols=")).data(); 513 } else if (option.starts_with("--oat-fd=")) { 514 const char* oat_fd_str = option.substr(strlen("--oat-fd=")).data(); 515 if (!ParseInt(oat_fd_str, &oat_fd_)) { 516 Usage("Failed to parse --oat-fd argument '%s' as an integer", oat_fd_str); 517 } 518 if (oat_fd_ < 0) { 519 Usage("--oat-fd passed a negative value %d", oat_fd_); 520 } 521 } else if (option == "--watch-dog") { 522 watch_dog_enabled = true; 523 } else if (option == "--no-watch-dog") { 524 watch_dog_enabled = false; 525 } else if (option == "--gen-gdb-info") { 526 generate_gdb_information = true; 527 // Debug symbols are needed for gdb information. 528 include_debug_symbols = true; 529 } else if (option == "--no-gen-gdb-info") { 530 generate_gdb_information = false; 531 } else if (option.starts_with("-j")) { 532 const char* thread_count_str = option.substr(strlen("-j")).data(); 533 if (!ParseUint(thread_count_str, &thread_count_)) { 534 Usage("Failed to parse -j argument '%s' as an integer", thread_count_str); 535 } 536 } else if (option.starts_with("--oat-location=")) { 537 oat_location_ = option.substr(strlen("--oat-location=")).data(); 538 } else if (option.starts_with("--bitcode=")) { 539 bitcode_filename_ = option.substr(strlen("--bitcode=")).data(); 540 } else if (option.starts_with("--image=")) { 541 image_filename_ = option.substr(strlen("--image=")).data(); 542 } else if (option.starts_with("--image-classes=")) { 543 image_classes_filename_ = option.substr(strlen("--image-classes=")).data(); 544 } else if (option.starts_with("--image-classes-zip=")) { 545 image_classes_zip_filename_ = option.substr(strlen("--image-classes-zip=")).data(); 546 } else if (option.starts_with("--compiled-classes=")) { 547 compiled_classes_filename_ = option.substr(strlen("--compiled-classes=")).data(); 548 } else if (option.starts_with("--compiled-classes-zip=")) { 549 compiled_classes_zip_filename_ = option.substr(strlen("--compiled-classes-zip=")).data(); 550 } else if (option.starts_with("--base=")) { 551 const char* image_base_str = option.substr(strlen("--base=")).data(); 552 char* end; 553 image_base_ = strtoul(image_base_str, &end, 16); 554 if (end == image_base_str || *end != '\0') { 555 Usage("Failed to parse hexadecimal value for option %s", option.data()); 556 } 557 } else if (option.starts_with("--boot-image=")) { 558 boot_image_filename = option.substr(strlen("--boot-image=")).data(); 559 } else if (option.starts_with("--android-root=")) { 560 android_root_ = option.substr(strlen("--android-root=")).data(); 561 } else if (option.starts_with("--instruction-set=")) { 562 StringPiece instruction_set_str = option.substr(strlen("--instruction-set=")).data(); 563 // StringPiece is not necessarily zero-terminated, so need to make a copy and ensure it. 564 std::unique_ptr<char> buf(new char[instruction_set_str.length() + 1]); 565 strncpy(buf.get(), instruction_set_str.data(), instruction_set_str.length()); 566 buf.get()[instruction_set_str.length()] = 0; 567 instruction_set_ = GetInstructionSetFromString(buf.get()); 568 // arm actually means thumb2. 569 if (instruction_set_ == InstructionSet::kArm) { 570 instruction_set_ = InstructionSet::kThumb2; 571 } 572 } else if (option.starts_with("--instruction-set-variant=")) { 573 StringPiece str = option.substr(strlen("--instruction-set-variant=")).data(); 574 instruction_set_features_.reset( 575 InstructionSetFeatures::FromVariant(instruction_set_, str.as_string(), &error_msg)); 576 if (instruction_set_features_.get() == nullptr) { 577 Usage("%s", error_msg.c_str()); 578 } 579 } else if (option.starts_with("--instruction-set-features=")) { 580 StringPiece str = option.substr(strlen("--instruction-set-features=")).data(); 581 if (instruction_set_features_.get() == nullptr) { 582 instruction_set_features_.reset( 583 InstructionSetFeatures::FromVariant(instruction_set_, "default", &error_msg)); 584 if (instruction_set_features_.get() == nullptr) { 585 Usage("Problem initializing default instruction set features variant: %s", 586 error_msg.c_str()); 587 } 588 } 589 instruction_set_features_.reset( 590 instruction_set_features_->AddFeaturesFromString(str.as_string(), &error_msg)); 591 if (instruction_set_features_.get() == nullptr) { 592 Usage("Error parsing '%s': %s", option.data(), error_msg.c_str()); 593 } 594 } else if (option.starts_with("--compiler-backend=")) { 595 StringPiece backend_str = option.substr(strlen("--compiler-backend=")).data(); 596 if (backend_str == "Quick") { 597 compiler_kind_ = Compiler::kQuick; 598 } else if (backend_str == "Optimizing") { 599 compiler_kind_ = Compiler::kOptimizing; 600 compile_pic = true; 601 } else if (backend_str == "Portable") { 602 compiler_kind_ = Compiler::kPortable; 603 } else { 604 Usage("Unknown compiler backend: %s", backend_str.data()); 605 } 606 } else if (option.starts_with("--compiler-filter=")) { 607 compiler_filter_string = option.substr(strlen("--compiler-filter=")).data(); 608 } else if (option == "--compile-pic") { 609 compile_pic = true; 610 } else if (option.starts_with("--huge-method-max=")) { 611 const char* threshold = option.substr(strlen("--huge-method-max=")).data(); 612 if (!ParseInt(threshold, &huge_method_threshold)) { 613 Usage("Failed to parse --huge-method-max '%s' as an integer", threshold); 614 } 615 if (huge_method_threshold < 0) { 616 Usage("--huge-method-max passed a negative value %s", huge_method_threshold); 617 } 618 } else if (option.starts_with("--large-method-max=")) { 619 const char* threshold = option.substr(strlen("--large-method-max=")).data(); 620 if (!ParseInt(threshold, &large_method_threshold)) { 621 Usage("Failed to parse --large-method-max '%s' as an integer", threshold); 622 } 623 if (large_method_threshold < 0) { 624 Usage("--large-method-max passed a negative value %s", large_method_threshold); 625 } 626 } else if (option.starts_with("--small-method-max=")) { 627 const char* threshold = option.substr(strlen("--small-method-max=")).data(); 628 if (!ParseInt(threshold, &small_method_threshold)) { 629 Usage("Failed to parse --small-method-max '%s' as an integer", threshold); 630 } 631 if (small_method_threshold < 0) { 632 Usage("--small-method-max passed a negative value %s", small_method_threshold); 633 } 634 } else if (option.starts_with("--tiny-method-max=")) { 635 const char* threshold = option.substr(strlen("--tiny-method-max=")).data(); 636 if (!ParseInt(threshold, &tiny_method_threshold)) { 637 Usage("Failed to parse --tiny-method-max '%s' as an integer", threshold); 638 } 639 if (tiny_method_threshold < 0) { 640 Usage("--tiny-method-max passed a negative value %s", tiny_method_threshold); 641 } 642 } else if (option.starts_with("--num-dex-methods=")) { 643 const char* threshold = option.substr(strlen("--num-dex-methods=")).data(); 644 if (!ParseInt(threshold, &num_dex_methods_threshold)) { 645 Usage("Failed to parse --num-dex-methods '%s' as an integer", threshold); 646 } 647 if (num_dex_methods_threshold < 0) { 648 Usage("--num-dex-methods passed a negative value %s", num_dex_methods_threshold); 649 } 650 } else if (option == "--host") { 651 is_host_ = true; 652 } else if (option == "--runtime-arg") { 653 if (++i >= argc) { 654 Usage("Missing required argument for --runtime-arg"); 655 } 656 if (log_options) { 657 LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i]; 658 } 659 runtime_args_.push_back(argv[i]); 660 } else if (option == "--dump-timing") { 661 dump_timing_ = true; 662 } else if (option == "--dump-passes") { 663 dump_passes_ = true; 664 } else if (option == "--dump-stats") { 665 dump_stats_ = true; 666 } else if (option == "--include-debug-symbols" || option == "--no-strip-symbols") { 667 include_debug_symbols = true; 668 } else if (option == "--no-include-debug-symbols" || option == "--strip-symbols") { 669 include_debug_symbols = false; 670 generate_gdb_information = false; // Depends on debug symbols, see above. 671 } else if (option.starts_with("--profile-file=")) { 672 profile_file_ = option.substr(strlen("--profile-file=")).data(); 673 VLOG(compiler) << "dex2oat: profile file is " << profile_file_; 674 } else if (option == "--no-profile-file") { 675 // No profile 676 } else if (option.starts_with("--top-k-profile-threshold=")) { 677 ParseDouble(option.data(), '=', 0.0, 100.0, &top_k_profile_threshold); 678 } else if (option == "--print-pass-names") { 679 PassDriverMEOpts::PrintPassNames(); 680 } else if (option.starts_with("--disable-passes=")) { 681 std::string disable_passes = option.substr(strlen("--disable-passes=")).data(); 682 PassDriverMEOpts::CreateDefaultPassList(disable_passes); 683 } else if (option.starts_with("--print-passes=")) { 684 std::string print_passes = option.substr(strlen("--print-passes=")).data(); 685 PassDriverMEOpts::SetPrintPassList(print_passes); 686 } else if (option == "--print-all-passes") { 687 PassDriverMEOpts::SetPrintAllPasses(); 688 } else if (option.starts_with("--dump-cfg-passes=")) { 689 std::string dump_passes_string = option.substr(strlen("--dump-cfg-passes=")).data(); 690 PassDriverMEOpts::SetDumpPassList(dump_passes_string); 691 } else if (option == "--print-pass-options") { 692 print_pass_options = true; 693 } else if (option.starts_with("--pass-options=")) { 694 std::string options = option.substr(strlen("--pass-options=")).data(); 695 PassDriverMEOpts::SetOverriddenPassOptions(options); 696 } else if (option == "--include-patch-information") { 697 include_patch_information = true; 698 } else if (option == "--no-include-patch-information") { 699 include_patch_information = false; 700 } else if (option.starts_with("--verbose-methods=")) { 701 // TODO: rather than switch off compiler logging, make all VLOG(compiler) messages conditional 702 // on having verbost methods. 703 gLogVerbosity.compiler = false; 704 Split(option.substr(strlen("--verbose-methods=")).ToString(), ',', &verbose_methods_); 705 } else { 706 Usage("Unknown argument %s", option.data()); 707 } 708 } 709 710 if (oat_filename_.empty() && oat_fd_ == -1) { 711 Usage("Output must be supplied with either --oat-file or --oat-fd"); 712 } 713 714 if (!oat_filename_.empty() && oat_fd_ != -1) { 715 Usage("--oat-file should not be used with --oat-fd"); 716 } 717 718 if (!oat_symbols.empty() && oat_fd_ != -1) { 719 Usage("--oat-symbols should not be used with --oat-fd"); 720 } 721 722 if (!oat_symbols.empty() && is_host_) { 723 Usage("--oat-symbols should not be used with --host"); 724 } 725 726 if (oat_fd_ != -1 && !image_filename_.empty()) { 727 Usage("--oat-fd should not be used with --image"); 728 } 729 730 if (android_root_.empty()) { 731 const char* android_root_env_var = getenv("ANDROID_ROOT"); 732 if (android_root_env_var == nullptr) { 733 Usage("--android-root unspecified and ANDROID_ROOT not set"); 734 } 735 android_root_ += android_root_env_var; 736 } 737 738 image_ = (!image_filename_.empty()); 739 if (!image_ && boot_image_filename.empty()) { 740 boot_image_filename += android_root_; 741 boot_image_filename += "/framework/boot.art"; 742 } 743 if (!boot_image_filename.empty()) { 744 boot_image_option_ += "-Ximage:"; 745 boot_image_option_ += boot_image_filename; 746 } 747 748 if (image_classes_filename_ != nullptr && !image_) { 749 Usage("--image-classes should only be used with --image"); 750 } 751 752 if (image_classes_filename_ != nullptr && !boot_image_option_.empty()) { 753 Usage("--image-classes should not be used with --boot-image"); 754 } 755 756 if (image_classes_zip_filename_ != nullptr && image_classes_filename_ == nullptr) { 757 Usage("--image-classes-zip should be used with --image-classes"); 758 } 759 760 if (compiled_classes_filename_ != nullptr && !image_) { 761 Usage("--compiled-classes should only be used with --image"); 762 } 763 764 if (compiled_classes_filename_ != nullptr && !boot_image_option_.empty()) { 765 Usage("--compiled-classes should not be used with --boot-image"); 766 } 767 768 if (compiled_classes_zip_filename_ != nullptr && compiled_classes_filename_ == nullptr) { 769 Usage("--compiled-classes-zip should be used with --compiled-classes"); 770 } 771 772 if (dex_filenames_.empty() && zip_fd_ == -1) { 773 Usage("Input must be supplied with either --dex-file or --zip-fd"); 774 } 775 776 if (!dex_filenames_.empty() && zip_fd_ != -1) { 777 Usage("--dex-file should not be used with --zip-fd"); 778 } 779 780 if (!dex_filenames_.empty() && !zip_location_.empty()) { 781 Usage("--dex-file should not be used with --zip-location"); 782 } 783 784 if (dex_locations_.empty()) { 785 for (const char* dex_file_name : dex_filenames_) { 786 dex_locations_.push_back(dex_file_name); 787 } 788 } else if (dex_locations_.size() != dex_filenames_.size()) { 789 Usage("--dex-location arguments do not match --dex-file arguments"); 790 } 791 792 if (zip_fd_ != -1 && zip_location_.empty()) { 793 Usage("--zip-location should be supplied with --zip-fd"); 794 } 795 796 if (boot_image_option_.empty()) { 797 if (image_base_ == 0) { 798 Usage("Non-zero --base not specified"); 799 } 800 } 801 802 oat_stripped_ = oat_filename_; 803 if (!oat_symbols.empty()) { 804 oat_unstripped_ = oat_symbols; 805 } else { 806 oat_unstripped_ = oat_filename_; 807 } 808 809 // If no instruction set feature was given, use the default one for the target 810 // instruction set. 811 if (instruction_set_features_.get() == nullptr) { 812 instruction_set_features_.reset( 813 InstructionSetFeatures::FromVariant(instruction_set_, "default", &error_msg)); 814 if (instruction_set_features_.get() == nullptr) { 815 Usage("Problem initializing default instruction set features variant: %s", 816 error_msg.c_str()); 817 } 818 } 819 820 if (instruction_set_ == kRuntimeISA) { 821 std::unique_ptr<const InstructionSetFeatures> runtime_features( 822 InstructionSetFeatures::FromCppDefines()); 823 if (!instruction_set_features_->Equals(runtime_features.get())) { 824 LOG(WARNING) << "Mismatch between dex2oat instruction set features (" 825 << *instruction_set_features_ << ") and those of dex2oat executable (" 826 << *runtime_features <<") for the command line:\n" 827 << CommandLine(); 828 } 829 } 830 831 if (compiler_filter_string == nullptr) { 832 if (instruction_set_ == kMips64) { 833 // TODO: fix compiler for Mips64. 834 compiler_filter_string = "interpret-only"; 835 } else if (image_) { 836 compiler_filter_string = "speed"; 837 } else { 838 // TODO: Migrate SMALL mode to command line option. 839 #if ART_SMALL_MODE 840 compiler_filter_string = "interpret-only"; 841 #else 842 compiler_filter_string = "speed"; 843 #endif 844 } 845 } 846 CHECK(compiler_filter_string != nullptr); 847 CompilerOptions::CompilerFilter compiler_filter = CompilerOptions::kDefaultCompilerFilter; 848 if (strcmp(compiler_filter_string, "verify-none") == 0) { 849 compiler_filter = CompilerOptions::kVerifyNone; 850 } else if (strcmp(compiler_filter_string, "interpret-only") == 0) { 851 compiler_filter = CompilerOptions::kInterpretOnly; 852 } else if (strcmp(compiler_filter_string, "space") == 0) { 853 compiler_filter = CompilerOptions::kSpace; 854 } else if (strcmp(compiler_filter_string, "balanced") == 0) { 855 compiler_filter = CompilerOptions::kBalanced; 856 } else if (strcmp(compiler_filter_string, "speed") == 0) { 857 compiler_filter = CompilerOptions::kSpeed; 858 } else if (strcmp(compiler_filter_string, "everything") == 0) { 859 compiler_filter = CompilerOptions::kEverything; 860 } else if (strcmp(compiler_filter_string, "time") == 0) { 861 compiler_filter = CompilerOptions::kTime; 862 } else { 863 Usage("Unknown --compiler-filter value %s", compiler_filter_string); 864 } 865 866 // Checks are all explicit until we know the architecture. 867 bool implicit_null_checks = false; 868 bool implicit_so_checks = false; 869 bool implicit_suspend_checks = false; 870 // Set the compilation target's implicit checks options. 871 switch (instruction_set_) { 872 case kArm: 873 case kThumb2: 874 case kArm64: 875 case kX86: 876 case kX86_64: 877 implicit_null_checks = true; 878 implicit_so_checks = true; 879 break; 880 881 default: 882 // Defaults are correct. 883 break; 884 } 885 886 if (print_pass_options) { 887 PassDriverMEOpts::PrintPassOptions(); 888 } 889 890 compiler_options_.reset(new CompilerOptions(compiler_filter, 891 huge_method_threshold, 892 large_method_threshold, 893 small_method_threshold, 894 tiny_method_threshold, 895 num_dex_methods_threshold, 896 generate_gdb_information, 897 include_patch_information, 898 top_k_profile_threshold, 899 include_debug_symbols, 900 implicit_null_checks, 901 implicit_so_checks, 902 implicit_suspend_checks, 903 compile_pic, 904 #ifdef ART_SEA_IR_MODE 905 true, 906 #endif 907 verbose_methods_.empty() ? 908 nullptr : 909 &verbose_methods_)); 910 911 // Done with usage checks, enable watchdog if requested 912 if (watch_dog_enabled) { 913 watchdog_.reset(new WatchDog(true)); 914 } 915 916 // Fill some values into the key-value store for the oat header. 917 key_value_store_.reset(new SafeMap<std::string, std::string>()); 918 919 // Insert some compiler things. 920 { 921 std::ostringstream oss; 922 for (int i = 0; i < argc; ++i) { 923 if (i > 0) { 924 oss << ' '; 925 } 926 oss << argv[i]; 927 } 928 key_value_store_->Put(OatHeader::kDex2OatCmdLineKey, oss.str()); 929 oss.str(""); // Reset. 930 oss << kRuntimeISA; 931 key_value_store_->Put(OatHeader::kDex2OatHostKey, oss.str()); 932 key_value_store_->Put(OatHeader::kPicKey, compile_pic ? "true" : "false"); 933 } 934 } 935 936 // Check whether the oat output file is writable, and open it for later. 937 bool OpenFile() { 938 bool create_file = !oat_unstripped_.empty(); // as opposed to using open file descriptor 939 if (create_file) { 940 oat_file_.reset(OS::CreateEmptyFile(oat_unstripped_.c_str())); 941 if (oat_location_.empty()) { 942 oat_location_ = oat_filename_; 943 } 944 } else { 945 oat_file_.reset(new File(oat_fd_, oat_location_)); 946 oat_file_->DisableAutoClose(); 947 oat_file_->SetLength(0); 948 } 949 if (oat_file_.get() == nullptr) { 950 PLOG(ERROR) << "Failed to create oat file: " << oat_location_; 951 return false; 952 } 953 if (create_file && fchmod(oat_file_->Fd(), 0644) != 0) { 954 PLOG(ERROR) << "Failed to make oat file world readable: " << oat_location_; 955 return false; 956 } 957 return true; 958 } 959 960 // Set up the environment for compilation. Includes starting the runtime and loading/opening the 961 // boot class path. 962 bool Setup() { 963 TimingLogger::ScopedTiming t("dex2oat Setup", timings_); 964 RuntimeOptions runtime_options; 965 std::vector<const DexFile*> boot_class_path; 966 art::MemMap::Init(); // For ZipEntry::ExtractToMemMap. 967 if (boot_image_option_.empty()) { 968 size_t failure_count = OpenDexFiles(dex_filenames_, dex_locations_, boot_class_path); 969 if (failure_count > 0) { 970 LOG(ERROR) << "Failed to open some dex files: " << failure_count; 971 return false; 972 } 973 runtime_options.push_back(std::make_pair("bootclasspath", &boot_class_path)); 974 } else { 975 runtime_options.push_back(std::make_pair(boot_image_option_.c_str(), nullptr)); 976 } 977 for (size_t i = 0; i < runtime_args_.size(); i++) { 978 runtime_options.push_back(std::make_pair(runtime_args_[i], nullptr)); 979 } 980 981 verification_results_.reset(new VerificationResults(compiler_options_.get())); 982 callbacks_.reset(new QuickCompilerCallbacks(verification_results_.get(), &method_inliner_map_)); 983 runtime_options.push_back(std::make_pair("compilercallbacks", callbacks_.get())); 984 runtime_options.push_back( 985 std::make_pair("imageinstructionset", GetInstructionSetString(instruction_set_))); 986 987 if (!CreateRuntime(runtime_options)) { 988 return false; 989 } 990 991 // Runtime::Create acquired the mutator_lock_ that is normally given away when we 992 // Runtime::Start, give it away now so that we don't starve GC. 993 Thread* self = Thread::Current(); 994 self->TransitionFromRunnableToSuspended(kNative); 995 // If we're doing the image, override the compiler filter to force full compilation. Must be 996 // done ahead of WellKnownClasses::Init that causes verification. Note: doesn't force 997 // compilation of class initializers. 998 // Whilst we're in native take the opportunity to initialize well known classes. 999 WellKnownClasses::Init(self->GetJniEnv()); 1000 1001 // If --image-classes was specified, calculate the full list of classes to include in the image 1002 if (image_classes_filename_ != nullptr) { 1003 std::string error_msg; 1004 if (image_classes_zip_filename_ != nullptr) { 1005 image_classes_.reset(ReadImageClassesFromZip(image_classes_zip_filename_, 1006 image_classes_filename_, 1007 &error_msg)); 1008 } else { 1009 image_classes_.reset(ReadImageClassesFromFile(image_classes_filename_)); 1010 } 1011 if (image_classes_.get() == nullptr) { 1012 LOG(ERROR) << "Failed to create list of image classes from '" << image_classes_filename_ << 1013 "': " << error_msg; 1014 return false; 1015 } 1016 } else if (image_) { 1017 image_classes_.reset(new std::set<std::string>); 1018 } 1019 // If --compiled-classes was specified, calculate the full list of classes to compile in the 1020 // image. 1021 if (compiled_classes_filename_ != nullptr) { 1022 std::string error_msg; 1023 if (compiled_classes_zip_filename_ != nullptr) { 1024 compiled_classes_.reset(ReadImageClassesFromZip(compiled_classes_zip_filename_, 1025 compiled_classes_filename_, 1026 &error_msg)); 1027 } else { 1028 compiled_classes_.reset(ReadImageClassesFromFile(compiled_classes_filename_)); 1029 } 1030 if (compiled_classes_.get() == nullptr) { 1031 LOG(ERROR) << "Failed to create list of compiled classes from '" 1032 << compiled_classes_filename_ << "': " << error_msg; 1033 return false; 1034 } 1035 } else if (image_) { 1036 compiled_classes_.reset(nullptr); // By default compile everything. 1037 } 1038 1039 if (boot_image_option_.empty()) { 1040 dex_files_ = Runtime::Current()->GetClassLinker()->GetBootClassPath(); 1041 } else { 1042 if (dex_filenames_.empty()) { 1043 ATRACE_BEGIN("Opening zip archive from file descriptor"); 1044 std::string error_msg; 1045 std::unique_ptr<ZipArchive> zip_archive(ZipArchive::OpenFromFd(zip_fd_, 1046 zip_location_.c_str(), 1047 &error_msg)); 1048 if (zip_archive.get() == nullptr) { 1049 LOG(ERROR) << "Failed to open zip from file descriptor for '" << zip_location_ << "': " 1050 << error_msg; 1051 return false; 1052 } 1053 if (!DexFile::OpenFromZip(*zip_archive.get(), zip_location_, &error_msg, &dex_files_)) { 1054 LOG(ERROR) << "Failed to open dex from file descriptor for zip file '" << zip_location_ 1055 << "': " << error_msg; 1056 return false; 1057 } 1058 ATRACE_END(); 1059 } else { 1060 size_t failure_count = OpenDexFiles(dex_filenames_, dex_locations_, dex_files_); 1061 if (failure_count > 0) { 1062 LOG(ERROR) << "Failed to open some dex files: " << failure_count; 1063 return false; 1064 } 1065 } 1066 1067 constexpr bool kSaveDexInput = false; 1068 if (kSaveDexInput) { 1069 for (size_t i = 0; i < dex_files_.size(); ++i) { 1070 const DexFile* dex_file = dex_files_[i]; 1071 std::string tmp_file_name(StringPrintf("/data/local/tmp/dex2oat.%d.%zd.dex", getpid(), i)); 1072 std::unique_ptr<File> tmp_file(OS::CreateEmptyFile(tmp_file_name.c_str())); 1073 if (tmp_file.get() == nullptr) { 1074 PLOG(ERROR) << "Failed to open file " << tmp_file_name 1075 << ". Try: adb shell chmod 777 /data/local/tmp"; 1076 continue; 1077 } 1078 tmp_file->WriteFully(dex_file->Begin(), dex_file->Size()); 1079 LOG(INFO) << "Wrote input to " << tmp_file_name; 1080 } 1081 } 1082 } 1083 // Ensure opened dex files are writable for dex-to-dex transformations. 1084 for (const auto& dex_file : dex_files_) { 1085 if (!dex_file->EnableWrite()) { 1086 PLOG(ERROR) << "Failed to make .dex file writeable '" << dex_file->GetLocation() << "'\n"; 1087 } 1088 } 1089 1090 /* 1091 * If we're not in interpret-only or verify-none mode, go ahead and compile small applications. 1092 * Don't bother to check if we're doing the image. 1093 */ 1094 if (!image_ && compiler_options_->IsCompilationEnabled() && compiler_kind_ == Compiler::kQuick) { 1095 size_t num_methods = 0; 1096 for (size_t i = 0; i != dex_files_.size(); ++i) { 1097 const DexFile* dex_file = dex_files_[i]; 1098 CHECK(dex_file != nullptr); 1099 num_methods += dex_file->NumMethodIds(); 1100 } 1101 if (num_methods <= compiler_options_->GetNumDexMethodsThreshold()) { 1102 compiler_options_->SetCompilerFilter(CompilerOptions::kSpeed); 1103 VLOG(compiler) << "Below method threshold, compiling anyways"; 1104 } 1105 } 1106 1107 return true; 1108 } 1109 1110 // Create and invoke the compiler driver. This will compile all the dex files. 1111 void Compile() { 1112 TimingLogger::ScopedTiming t("dex2oat Compile", timings_); 1113 compiler_phases_timings_.reset(new CumulativeLogger("compilation times")); 1114 1115 // Handle and ClassLoader creation needs to come after Runtime::Create 1116 jobject class_loader = nullptr; 1117 Thread* self = Thread::Current(); 1118 if (!boot_image_option_.empty()) { 1119 ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 1120 std::vector<const DexFile*> class_path_files(dex_files_); 1121 OpenClassPathFiles(runtime_->GetClassPathString(), class_path_files); 1122 ScopedObjectAccess soa(self); 1123 for (size_t i = 0; i < class_path_files.size(); i++) { 1124 class_linker->RegisterDexFile(*class_path_files[i]); 1125 } 1126 soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader); 1127 ScopedLocalRef<jobject> class_loader_local(soa.Env(), 1128 soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader)); 1129 class_loader = soa.Env()->NewGlobalRef(class_loader_local.get()); 1130 Runtime::Current()->SetCompileTimeClassPath(class_loader, class_path_files); 1131 } 1132 1133 driver_.reset(new CompilerDriver(compiler_options_.get(), 1134 verification_results_.get(), 1135 &method_inliner_map_, 1136 compiler_kind_, 1137 instruction_set_, 1138 instruction_set_features_.get(), 1139 image_, 1140 image_classes_.release(), 1141 compiled_classes_.release(), 1142 thread_count_, 1143 dump_stats_, 1144 dump_passes_, 1145 compiler_phases_timings_.get(), 1146 profile_file_)); 1147 1148 driver_->GetCompiler()->SetBitcodeFileName(*driver_, bitcode_filename_); 1149 1150 driver_->CompileAll(class_loader, dex_files_, timings_); 1151 } 1152 1153 // Notes on the interleaving of creating the image and oat file to 1154 // ensure the references between the two are correct. 1155 // 1156 // Currently we have a memory layout that looks something like this: 1157 // 1158 // +--------------+ 1159 // | image | 1160 // +--------------+ 1161 // | boot oat | 1162 // +--------------+ 1163 // | alloc spaces | 1164 // +--------------+ 1165 // 1166 // There are several constraints on the loading of the image and boot.oat. 1167 // 1168 // 1. The image is expected to be loaded at an absolute address and 1169 // contains Objects with absolute pointers within the image. 1170 // 1171 // 2. There are absolute pointers from Methods in the image to their 1172 // code in the oat. 1173 // 1174 // 3. There are absolute pointers from the code in the oat to Methods 1175 // in the image. 1176 // 1177 // 4. There are absolute pointers from code in the oat to other code 1178 // in the oat. 1179 // 1180 // To get this all correct, we go through several steps. 1181 // 1182 // 1. We prepare offsets for all data in the oat file and calculate 1183 // the oat data size and code size. During this stage, we also set 1184 // oat code offsets in methods for use by the image writer. 1185 // 1186 // 2. We prepare offsets for the objects in the image and calculate 1187 // the image size. 1188 // 1189 // 3. We create the oat file. Originally this was just our own proprietary 1190 // file but now it is contained within an ELF dynamic object (aka an .so 1191 // file). Since we know the image size and oat data size and code size we 1192 // can prepare the ELF headers and we then know the ELF memory segment 1193 // layout and we can now resolve all references. The compiler provides 1194 // LinkerPatch information in each CompiledMethod and we resolve these, 1195 // using the layout information and image object locations provided by 1196 // image writer, as we're writing the method code. 1197 // 1198 // 4. We create the image file. It needs to know where the oat file 1199 // will be loaded after itself. Originally when oat file was simply 1200 // memory mapped so we could predict where its contents were based 1201 // on the file size. Now that it is an ELF file, we need to inspect 1202 // the ELF file to understand the in memory segment layout including 1203 // where the oat header is located within. 1204 // TODO: We could just remember this information from step 3. 1205 // 1206 // 5. We fixup the ELF program headers so that dlopen will try to 1207 // load the .so at the desired location at runtime by offsetting the 1208 // Elf32_Phdr.p_vaddr values by the desired base address. 1209 // TODO: Do this in step 3. We already know the layout there. 1210 // 1211 // Steps 1.-3. are done by the CreateOatFile() above, steps 4.-5. 1212 // are done by the CreateImageFile() below. 1213 1214 1215 // Write out the generated code part. Calls the OatWriter and ElfBuilder. Also prepares the 1216 // ImageWriter, if necessary. 1217 bool CreateOatFile() { 1218 CHECK(key_value_store_.get() != nullptr); 1219 1220 TimingLogger::ScopedTiming t("dex2oat Oat", timings_); 1221 1222 std::unique_ptr<OatWriter> oat_writer; 1223 { 1224 TimingLogger::ScopedTiming t2("dex2oat OatWriter", timings_); 1225 std::string image_file_location; 1226 uint32_t image_file_location_oat_checksum = 0; 1227 uintptr_t image_file_location_oat_data_begin = 0; 1228 int32_t image_patch_delta = 0; 1229 if (image_) { 1230 PrepareImageWriter(image_base_); 1231 } else { 1232 TimingLogger::ScopedTiming t3("Loading image checksum", timings_); 1233 gc::space::ImageSpace* image_space = Runtime::Current()->GetHeap()->GetImageSpace(); 1234 image_file_location_oat_checksum = image_space->GetImageHeader().GetOatChecksum(); 1235 image_file_location_oat_data_begin = 1236 reinterpret_cast<uintptr_t>(image_space->GetImageHeader().GetOatDataBegin()); 1237 image_file_location = image_space->GetImageFilename(); 1238 image_patch_delta = image_space->GetImageHeader().GetPatchDelta(); 1239 } 1240 1241 if (!image_file_location.empty()) { 1242 key_value_store_->Put(OatHeader::kImageLocationKey, image_file_location); 1243 } 1244 1245 oat_writer.reset(new OatWriter(dex_files_, image_file_location_oat_checksum, 1246 image_file_location_oat_data_begin, 1247 image_patch_delta, 1248 driver_.get(), 1249 image_writer_.get(), 1250 timings_, 1251 key_value_store_.get())); 1252 } 1253 1254 if (image_) { 1255 // The OatWriter constructor has already updated offsets in methods and we need to 1256 // prepare method offsets in the image address space for direct method patching. 1257 TimingLogger::ScopedTiming t2("dex2oat Prepare image address space", timings_); 1258 if (!image_writer_->PrepareImageAddressSpace()) { 1259 LOG(ERROR) << "Failed to prepare image address space."; 1260 return false; 1261 } 1262 } 1263 1264 { 1265 TimingLogger::ScopedTiming t2("dex2oat Write ELF", timings_); 1266 if (!driver_->WriteElf(android_root_, is_host_, dex_files_, oat_writer.get(), 1267 oat_file_.get())) { 1268 LOG(ERROR) << "Failed to write ELF file " << oat_file_->GetPath(); 1269 return false; 1270 } 1271 } 1272 1273 // Flush result to disk. 1274 { 1275 TimingLogger::ScopedTiming t2("dex2oat Flush ELF", timings_); 1276 if (oat_file_->Flush() != 0) { 1277 LOG(ERROR) << "Failed to flush ELF file " << oat_file_->GetPath(); 1278 return false; 1279 } 1280 } 1281 1282 VLOG(compiler) << "Oat file written successfully (unstripped): " << oat_location_; 1283 return true; 1284 } 1285 1286 // If we are compiling an image, invoke the image creation routine. Else just skip. 1287 bool HandleImage() { 1288 if (image_) { 1289 TimingLogger::ScopedTiming t("dex2oat ImageWriter", timings_); 1290 if (!CreateImageFile()) { 1291 return false; 1292 } 1293 VLOG(compiler) << "Image written successfully: " << image_filename_; 1294 } 1295 return true; 1296 } 1297 1298 // Strip the oat file, if requested. This first creates a copy from unstripped to stripped, and 1299 // then runs the ElfStripper. Currently only relevant for the portable compiler. 1300 bool Strip() { 1301 // If we don't want to strip in place, copy from unstripped location to stripped location. 1302 // We need to strip after image creation because FixupElf needs to use .strtab. 1303 if (oat_unstripped_ != oat_stripped_) { 1304 TimingLogger::ScopedTiming t("dex2oat OatFile copy", timings_); 1305 oat_file_.reset(); 1306 std::unique_ptr<File> in(OS::OpenFileForReading(oat_unstripped_.c_str())); 1307 std::unique_ptr<File> out(OS::CreateEmptyFile(oat_stripped_.c_str())); 1308 size_t buffer_size = 8192; 1309 std::unique_ptr<uint8_t> buffer(new uint8_t[buffer_size]); 1310 while (true) { 1311 int bytes_read = TEMP_FAILURE_RETRY(read(in->Fd(), buffer.get(), buffer_size)); 1312 if (bytes_read <= 0) { 1313 break; 1314 } 1315 bool write_ok = out->WriteFully(buffer.get(), bytes_read); 1316 CHECK(write_ok); 1317 } 1318 oat_file_.reset(out.release()); 1319 VLOG(compiler) << "Oat file copied successfully (stripped): " << oat_stripped_; 1320 } 1321 1322 if (kUsePortableCompiler) { 1323 // Portable includes debug symbols unconditionally. If we are not supposed to create them, 1324 // strip them now. Quick generates debug symbols only when the flag(s) are set. 1325 if (!compiler_options_->GetIncludeDebugSymbols()) { 1326 TimingLogger::ScopedTiming t("dex2oat ElfStripper", timings_); 1327 // Strip unneeded sections for target 1328 off_t seek_actual = lseek(oat_file_->Fd(), 0, SEEK_SET); 1329 CHECK_EQ(0, seek_actual); 1330 std::string error_msg; 1331 if (!ElfFile::Strip(oat_file_.get(), &error_msg)) { 1332 LOG(ERROR) << "Failed to strip elf file: " << error_msg; 1333 return false; 1334 } 1335 1336 // We wrote the oat file successfully, and want to keep it. 1337 VLOG(compiler) << "Oat file written successfully (stripped): " << oat_location_; 1338 } else { 1339 VLOG(compiler) << "Oat file written successfully without stripping: " << oat_location_; 1340 } 1341 } 1342 1343 return true; 1344 } 1345 1346 void DumpTiming() { 1347 if (dump_timing_ || (dump_slow_timing_ && timings_->GetTotalNs() > MsToNs(1000))) { 1348 LOG(INFO) << Dumpable<TimingLogger>(*timings_); 1349 } 1350 if (dump_passes_) { 1351 LOG(INFO) << Dumpable<CumulativeLogger>(*driver_->GetTimingsLogger()); 1352 } 1353 } 1354 1355 CompilerOptions* GetCompilerOptions() const { 1356 return compiler_options_.get(); 1357 } 1358 1359 bool IsHost() const { 1360 return is_host_; 1361 } 1362 1363 private: 1364 static size_t OpenDexFiles(const std::vector<const char*>& dex_filenames, 1365 const std::vector<const char*>& dex_locations, 1366 std::vector<const DexFile*>& dex_files) { 1367 size_t failure_count = 0; 1368 for (size_t i = 0; i < dex_filenames.size(); i++) { 1369 const char* dex_filename = dex_filenames[i]; 1370 const char* dex_location = dex_locations[i]; 1371 ATRACE_BEGIN(StringPrintf("Opening dex file '%s'", dex_filenames[i]).c_str()); 1372 std::string error_msg; 1373 if (!OS::FileExists(dex_filename)) { 1374 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 1375 continue; 1376 } 1377 if (!DexFile::Open(dex_filename, dex_location, &error_msg, &dex_files)) { 1378 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 1379 ++failure_count; 1380 } 1381 ATRACE_END(); 1382 } 1383 return failure_count; 1384 } 1385 1386 // Returns true if dex_files has a dex with the named location. 1387 static bool DexFilesContains(const std::vector<const DexFile*>& dex_files, 1388 const std::string& location) { 1389 for (size_t i = 0; i < dex_files.size(); ++i) { 1390 if (dex_files[i]->GetLocation() == location) { 1391 return true; 1392 } 1393 } 1394 return false; 1395 } 1396 1397 // Appends to dex_files any elements of class_path that it doesn't already 1398 // contain. This will open those dex files as necessary. 1399 static void OpenClassPathFiles(const std::string& class_path, 1400 std::vector<const DexFile*>& dex_files) { 1401 std::vector<std::string> parsed; 1402 Split(class_path, ':', &parsed); 1403 // Take Locks::mutator_lock_ so that lock ordering on the ClassLinker::dex_lock_ is maintained. 1404 ScopedObjectAccess soa(Thread::Current()); 1405 for (size_t i = 0; i < parsed.size(); ++i) { 1406 if (DexFilesContains(dex_files, parsed[i])) { 1407 continue; 1408 } 1409 std::string error_msg; 1410 if (!DexFile::Open(parsed[i].c_str(), parsed[i].c_str(), &error_msg, &dex_files)) { 1411 LOG(WARNING) << "Failed to open dex file '" << parsed[i] << "': " << error_msg; 1412 } 1413 } 1414 } 1415 1416 // Create a runtime necessary for compilation. 1417 bool CreateRuntime(const RuntimeOptions& runtime_options) 1418 SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_) { 1419 if (!Runtime::Create(runtime_options, false)) { 1420 LOG(ERROR) << "Failed to create runtime"; 1421 return false; 1422 } 1423 Runtime* runtime = Runtime::Current(); 1424 runtime->SetInstructionSet(instruction_set_); 1425 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 1426 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 1427 if (!runtime->HasCalleeSaveMethod(type)) { 1428 runtime->SetCalleeSaveMethod(runtime->CreateCalleeSaveMethod(), type); 1429 } 1430 } 1431 runtime->GetClassLinker()->FixupDexCaches(runtime->GetResolutionMethod()); 1432 runtime->GetClassLinker()->RunRootClinits(); 1433 runtime_ = runtime; 1434 return true; 1435 } 1436 1437 void PrepareImageWriter(uintptr_t image_base) { 1438 image_writer_.reset(new ImageWriter(*driver_, image_base, compiler_options_->GetCompilePic())); 1439 } 1440 1441 // Let the ImageWriter write the image file. If we do not compile PIC, also fix up the oat file. 1442 bool CreateImageFile() 1443 LOCKS_EXCLUDED(Locks::mutator_lock_) { 1444 CHECK(image_writer_ != nullptr); 1445 if (!image_writer_->Write(image_filename_, oat_unstripped_, oat_location_)) { 1446 LOG(ERROR) << "Failed to create image file " << image_filename_; 1447 return false; 1448 } 1449 uintptr_t oat_data_begin = image_writer_->GetOatDataBegin(); 1450 1451 // Destroy ImageWriter before doing FixupElf. 1452 image_writer_.reset(); 1453 1454 std::unique_ptr<File> oat_file(OS::OpenFileReadWrite(oat_unstripped_.c_str())); 1455 if (oat_file.get() == nullptr) { 1456 PLOG(ERROR) << "Failed to open ELF file: " << oat_unstripped_; 1457 return false; 1458 } 1459 1460 // Do not fix up the ELF file if we are --compile-pic 1461 if (!compiler_options_->GetCompilePic()) { 1462 if (!ElfWriter::Fixup(oat_file.get(), oat_data_begin)) { 1463 LOG(ERROR) << "Failed to fixup ELF file " << oat_file->GetPath(); 1464 return false; 1465 } 1466 } 1467 1468 return true; 1469 } 1470 1471 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 1472 static std::set<std::string>* ReadImageClassesFromFile(const char* image_classes_filename) { 1473 std::unique_ptr<std::ifstream> image_classes_file(new std::ifstream(image_classes_filename, 1474 std::ifstream::in)); 1475 if (image_classes_file.get() == nullptr) { 1476 LOG(ERROR) << "Failed to open image classes file " << image_classes_filename; 1477 return nullptr; 1478 } 1479 std::unique_ptr<std::set<std::string>> result(ReadImageClasses(*image_classes_file)); 1480 image_classes_file->close(); 1481 return result.release(); 1482 } 1483 1484 static std::set<std::string>* ReadImageClasses(std::istream& image_classes_stream) { 1485 std::unique_ptr<std::set<std::string>> image_classes(new std::set<std::string>); 1486 while (image_classes_stream.good()) { 1487 std::string dot; 1488 std::getline(image_classes_stream, dot); 1489 if (StartsWith(dot, "#") || dot.empty()) { 1490 continue; 1491 } 1492 std::string descriptor(DotToDescriptor(dot.c_str())); 1493 image_classes->insert(descriptor); 1494 } 1495 return image_classes.release(); 1496 } 1497 1498 // Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;) 1499 static std::set<std::string>* ReadImageClassesFromZip(const char* zip_filename, 1500 const char* image_classes_filename, 1501 std::string* error_msg) { 1502 std::unique_ptr<ZipArchive> zip_archive(ZipArchive::Open(zip_filename, error_msg)); 1503 if (zip_archive.get() == nullptr) { 1504 return nullptr; 1505 } 1506 std::unique_ptr<ZipEntry> zip_entry(zip_archive->Find(image_classes_filename, error_msg)); 1507 if (zip_entry.get() == nullptr) { 1508 *error_msg = StringPrintf("Failed to find '%s' within '%s': %s", image_classes_filename, 1509 zip_filename, error_msg->c_str()); 1510 return nullptr; 1511 } 1512 std::unique_ptr<MemMap> image_classes_file(zip_entry->ExtractToMemMap(zip_filename, 1513 image_classes_filename, 1514 error_msg)); 1515 if (image_classes_file.get() == nullptr) { 1516 *error_msg = StringPrintf("Failed to extract '%s' from '%s': %s", image_classes_filename, 1517 zip_filename, error_msg->c_str()); 1518 return nullptr; 1519 } 1520 const std::string image_classes_string(reinterpret_cast<char*>(image_classes_file->Begin()), 1521 image_classes_file->Size()); 1522 std::istringstream image_classes_stream(image_classes_string); 1523 return ReadImageClasses(image_classes_stream); 1524 } 1525 1526 void LogCompletionTime() const { 1527 LOG(INFO) << "dex2oat took " << PrettyDuration(NanoTime() - start_ns_) 1528 << " (threads: " << thread_count_ << ")"; 1529 } 1530 1531 std::unique_ptr<CompilerOptions> compiler_options_; 1532 Compiler::Kind compiler_kind_; 1533 1534 InstructionSet instruction_set_; 1535 std::unique_ptr<const InstructionSetFeatures> instruction_set_features_; 1536 1537 std::unique_ptr<SafeMap<std::string, std::string> > key_value_store_; 1538 1539 std::unique_ptr<VerificationResults> verification_results_; 1540 DexFileToMethodInlinerMap method_inliner_map_; 1541 std::unique_ptr<QuickCompilerCallbacks> callbacks_; 1542 1543 // Not a unique_ptr as we want to just exit on non-debug builds, not bringing the runtime down 1544 // in an orderly fashion. The destructor takes care of deleting this. 1545 Runtime* runtime_; 1546 1547 size_t thread_count_; 1548 uint64_t start_ns_; 1549 std::unique_ptr<WatchDog> watchdog_; 1550 std::unique_ptr<File> oat_file_; 1551 std::string oat_stripped_; 1552 std::string oat_unstripped_; 1553 std::string oat_location_; 1554 std::string oat_filename_; 1555 int oat_fd_; 1556 std::string bitcode_filename_; 1557 std::vector<const char*> dex_filenames_; 1558 std::vector<const char*> dex_locations_; 1559 int zip_fd_; 1560 std::string zip_location_; 1561 std::string boot_image_option_; 1562 std::vector<const char*> runtime_args_; 1563 std::string image_filename_; 1564 uintptr_t image_base_; 1565 const char* image_classes_zip_filename_; 1566 const char* image_classes_filename_; 1567 const char* compiled_classes_zip_filename_; 1568 const char* compiled_classes_filename_; 1569 std::unique_ptr<std::set<std::string>> image_classes_; 1570 std::unique_ptr<std::set<std::string>> compiled_classes_; 1571 bool image_; 1572 std::unique_ptr<ImageWriter> image_writer_; 1573 bool is_host_; 1574 std::string android_root_; 1575 std::vector<const DexFile*> dex_files_; 1576 std::unique_ptr<CompilerDriver> driver_; 1577 std::vector<std::string> verbose_methods_; 1578 bool dump_stats_; 1579 bool dump_passes_; 1580 bool dump_timing_; 1581 bool dump_slow_timing_; 1582 std::string profile_file_; // Profile file to use 1583 TimingLogger* timings_; 1584 std::unique_ptr<CumulativeLogger> compiler_phases_timings_; 1585 1586 DISALLOW_IMPLICIT_CONSTRUCTORS(Dex2Oat); 1587}; 1588 1589const unsigned int WatchDog::kWatchDogWarningSeconds; 1590const unsigned int WatchDog::kWatchDogTimeoutSeconds; 1591 1592static void b13564922() { 1593#if defined(__linux__) && defined(__arm__) 1594 int major, minor; 1595 struct utsname uts; 1596 if (uname(&uts) != -1 && 1597 sscanf(uts.release, "%d.%d", &major, &minor) == 2 && 1598 ((major < 3) || ((major == 3) && (minor < 4)))) { 1599 // Kernels before 3.4 don't handle the ASLR well and we can run out of address 1600 // space (http://b/13564922). Work around the issue by inhibiting further mmap() randomization. 1601 int old_personality = personality(0xffffffff); 1602 if ((old_personality & ADDR_NO_RANDOMIZE) == 0) { 1603 int new_personality = personality(old_personality | ADDR_NO_RANDOMIZE); 1604 if (new_personality == -1) { 1605 LOG(WARNING) << "personality(. | ADDR_NO_RANDOMIZE) failed."; 1606 } 1607 } 1608 } 1609#endif 1610} 1611 1612static int dex2oat(int argc, char** argv) { 1613 b13564922(); 1614 1615 TimingLogger timings("compiler", false, false); 1616 1617 Dex2Oat dex2oat(&timings); 1618 1619 // Parse arguments. Argument mistakes will lead to exit(EXIT_FAILURE) in UsageError. 1620 dex2oat.ParseArgs(argc, argv); 1621 1622 // Check early that the result of compilation can be written 1623 if (!dex2oat.OpenFile()) { 1624 return EXIT_FAILURE; 1625 } 1626 1627 LOG(INFO) << CommandLine(); 1628 1629 if (!dex2oat.Setup()) { 1630 return EXIT_FAILURE; 1631 } 1632 1633 dex2oat.Compile(); 1634 1635 if (!dex2oat.CreateOatFile()) { 1636 return EXIT_FAILURE; 1637 } 1638 1639 if (!dex2oat.HandleImage()) { 1640 return EXIT_FAILURE; 1641 } 1642 1643 if (dex2oat.IsHost()) { 1644 dex2oat.DumpTiming(); 1645 return EXIT_SUCCESS; 1646 } 1647 1648 if (!dex2oat.Strip()) { 1649 return EXIT_FAILURE; 1650 } 1651 1652 dex2oat.DumpTiming(); 1653 return EXIT_SUCCESS; 1654} 1655} // namespace art 1656 1657int main(int argc, char** argv) { 1658 int result = art::dex2oat(argc, argv); 1659 // Everything was done, do an explicit exit here to avoid running Runtime destructors that take 1660 // time (bug 10645725) unless we're a debug build or running on valgrind. Note: The Dex2Oat class 1661 // should not destruct the runtime in this case. 1662 if (!art::kIsDebugBuild && (RUNNING_ON_VALGRIND == 0)) { 1663 exit(result); 1664 } 1665 return result; 1666} 1667