2 * Copyright (C) 2014 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #include "oat_file_assistant.h"
21 #include <sys/sendfile.h>
23 #include <sys/socket.h>
25 #include <sys/types.h>
31 #include "base/logging.h"
32 #include "base/stringprintf.h"
33 #include "class_linker.h"
35 #include "gc/space/image_space.h"
40 #include "scoped_thread_state_change.h"
46 OatFileAssistant::OatFileAssistant(const char* dex_location,
47 const InstructionSet isa,
50 : OatFileAssistant(dex_location, nullptr, isa, profile_changed, load_executable)
53 OatFileAssistant::OatFileAssistant(const char* dex_location,
54 const char* oat_location,
55 const InstructionSet isa,
58 : isa_(isa), profile_changed_(profile_changed), load_executable_(load_executable) {
59 CHECK(dex_location != nullptr) << "OatFileAssistant: null dex location";
60 dex_location_.assign(dex_location);
62 if (load_executable_ && isa != kRuntimeISA) {
63 LOG(WARNING) << "OatFileAssistant: Load executable specified, "
64 << "but isa is not kRuntimeISA. Will not attempt to load executable.";
65 load_executable_ = false;
68 // If the user gave a target oat location, save that as the cached oat
69 // location now so we won't try to construct the default location later.
70 if (oat_location != nullptr) {
71 cached_oat_file_name_ = std::string(oat_location);
72 cached_oat_file_name_attempted_ = true;
73 cached_oat_file_name_found_ = true;
77 OatFileAssistant::~OatFileAssistant() {
78 // Clean up the lock file.
79 if (flock_.HasFile()) {
80 unlink(flock_.GetFile()->GetPath().c_str());
84 bool OatFileAssistant::IsInBootClassPath() {
85 // Note: We check the current boot class path, regardless of the ISA
86 // specified by the user. This is okay, because the boot class path should
87 // be the same for all ISAs.
88 // TODO: Can we verify the boot class path is the same for all ISAs?
89 Runtime* runtime = Runtime::Current();
90 ClassLinker* class_linker = runtime->GetClassLinker();
91 const auto& boot_class_path = class_linker->GetBootClassPath();
92 for (size_t i = 0; i < boot_class_path.size(); i++) {
93 if (boot_class_path[i]->GetLocation() == dex_location_) {
94 VLOG(oat) << "Dex location " << dex_location_ << " is in boot class path";
101 bool OatFileAssistant::Lock(std::string* error_msg) {
102 CHECK(error_msg != nullptr);
103 CHECK(!flock_.HasFile()) << "OatFileAssistant::Lock already acquired";
105 if (OatFileName() == nullptr) {
106 *error_msg = "Failed to determine lock file";
109 std::string lock_file_name = *OatFileName() + ".flock";
111 if (!flock_.Init(lock_file_name.c_str(), error_msg)) {
112 unlink(lock_file_name.c_str());
118 bool OatFileAssistant::OatFileCompilerFilterIsOkay(CompilerFilter::Filter target) {
119 const OatFile* oat_file = GetOatFile();
120 if (oat_file != nullptr) {
121 CompilerFilter::Filter current = oat_file->GetCompilerFilter();
122 return CompilerFilter::IsAsGoodAs(current, target);
127 bool OatFileAssistant::OdexFileCompilerFilterIsOkay(CompilerFilter::Filter target) {
128 const OatFile* odex_file = GetOdexFile();
129 if (odex_file != nullptr) {
130 CompilerFilter::Filter current = odex_file->GetCompilerFilter();
131 return CompilerFilter::IsAsGoodAs(current, target);
136 OatFileAssistant::DexOptNeeded OatFileAssistant::GetDexOptNeeded(CompilerFilter::Filter target) {
137 bool compilation_desired = CompilerFilter::IsCompilationEnabled(target);
139 // See if the oat file is in good shape as is.
140 bool oat_okay = OatFileCompilerFilterIsOkay(target);
142 if (compilation_desired) {
143 if (OatFileIsUpToDate()) {
144 return kNoDexOptNeeded;
147 if (!OatFileIsOutOfDate()) {
148 return kNoDexOptNeeded;
153 // See if the odex file is in good shape as is.
154 bool odex_okay = OdexFileCompilerFilterIsOkay(target);
156 if (compilation_desired) {
157 if (OdexFileIsUpToDate()) {
158 return kNoDexOptNeeded;
161 if (!OdexFileIsOutOfDate()) {
162 return kNoDexOptNeeded;
167 // See if we can get an up-to-date file by running patchoat.
168 if (compilation_desired) {
169 if (odex_okay && OdexFileNeedsRelocation() && OdexFileHasPatchInfo()) {
170 return kPatchOatNeeded;
173 if (oat_okay && OatFileNeedsRelocation() && OatFileHasPatchInfo()) {
174 return kSelfPatchOatNeeded;
178 // We can only run dex2oat if there are original dex files.
179 return HasOriginalDexFiles() ? kDex2OatNeeded : kNoDexOptNeeded;
182 OatFileAssistant::ResultOfAttemptToUpdate
183 OatFileAssistant::MakeUpToDate(CompilerFilter::Filter target, std::string* error_msg) {
184 switch (GetDexOptNeeded(target)) {
185 case kNoDexOptNeeded: return kUpdateSucceeded;
186 case kDex2OatNeeded: return GenerateOatFile(target, error_msg);
187 case kPatchOatNeeded: return RelocateOatFile(OdexFileName(), error_msg);
188 case kSelfPatchOatNeeded: return RelocateOatFile(OatFileName(), error_msg);
193 std::unique_ptr<OatFile> OatFileAssistant::GetBestOatFile() {
194 // The best oat files are, in descending order of bestness:
195 // 1. Properly relocated files. These may be opened executable.
196 // 2. Not out-of-date files that are already opened non-executable.
197 // 3. Not out-of-date files that we must reopen non-executable.
199 if (OatFileIsUpToDate()) {
200 oat_file_released_ = true;
201 return std::move(cached_oat_file_);
204 if (OdexFileIsUpToDate()) {
205 oat_file_released_ = true;
206 return std::move(cached_odex_file_);
209 VLOG(oat) << "Oat File Assistant: No relocated oat file found,"
210 << " attempting to fall back to interpreting oat file instead.";
212 if (!OatFileIsOutOfDate() && !OatFileIsExecutable()) {
213 oat_file_released_ = true;
214 return std::move(cached_oat_file_);
217 if (!OdexFileIsOutOfDate() && !OdexFileIsExecutable()) {
218 oat_file_released_ = true;
219 return std::move(cached_odex_file_);
222 if (!OatFileIsOutOfDate()) {
223 load_executable_ = false;
225 if (!OatFileIsOutOfDate()) {
226 CHECK(!OatFileIsExecutable());
227 oat_file_released_ = true;
228 return std::move(cached_oat_file_);
232 if (!OdexFileIsOutOfDate()) {
233 load_executable_ = false;
234 ClearOdexFileCache();
235 if (!OdexFileIsOutOfDate()) {
236 CHECK(!OdexFileIsExecutable());
237 oat_file_released_ = true;
238 return std::move(cached_odex_file_);
242 return std::unique_ptr<OatFile>();
245 std::vector<std::unique_ptr<const DexFile>> OatFileAssistant::LoadDexFiles(
246 const OatFile& oat_file, const char* dex_location) {
247 std::vector<std::unique_ptr<const DexFile>> dex_files;
249 // Load the primary dex file.
250 std::string error_msg;
251 const OatFile::OatDexFile* oat_dex_file = oat_file.GetOatDexFile(
252 dex_location, nullptr, false);
253 if (oat_dex_file == nullptr) {
254 LOG(WARNING) << "Attempt to load out-of-date oat file "
255 << oat_file.GetLocation() << " for dex location " << dex_location;
256 return std::vector<std::unique_ptr<const DexFile>>();
259 std::unique_ptr<const DexFile> dex_file = oat_dex_file->OpenDexFile(&error_msg);
260 if (dex_file.get() == nullptr) {
261 LOG(WARNING) << "Failed to open dex file from oat dex file: " << error_msg;
262 return std::vector<std::unique_ptr<const DexFile>>();
264 dex_files.push_back(std::move(dex_file));
266 // Load secondary multidex files
267 for (size_t i = 1; ; i++) {
268 std::string secondary_dex_location = DexFile::GetMultiDexLocation(i, dex_location);
269 oat_dex_file = oat_file.GetOatDexFile(secondary_dex_location.c_str(), nullptr, false);
270 if (oat_dex_file == nullptr) {
271 // There are no more secondary dex files to load.
275 dex_file = oat_dex_file->OpenDexFile(&error_msg);
276 if (dex_file.get() == nullptr) {
277 LOG(WARNING) << "Failed to open dex file from oat dex file: " << error_msg;
278 return std::vector<std::unique_ptr<const DexFile>>();
280 dex_files.push_back(std::move(dex_file));
285 bool OatFileAssistant::HasOriginalDexFiles() {
286 // Ensure GetRequiredDexChecksum has been run so that
287 // has_original_dex_files_ is initialized. We don't care about the result of
288 // GetRequiredDexChecksum.
289 GetRequiredDexChecksum();
290 return has_original_dex_files_;
293 const std::string* OatFileAssistant::OdexFileName() {
294 if (!cached_odex_file_name_attempted_) {
295 cached_odex_file_name_attempted_ = true;
297 std::string error_msg;
298 cached_odex_file_name_found_ = DexFilenameToOdexFilename(
299 dex_location_, isa_, &cached_odex_file_name_, &error_msg);
300 if (!cached_odex_file_name_found_) {
301 // If we can't figure out the odex file, we treat it as if the odex
302 // file was inaccessible.
303 LOG(WARNING) << "Failed to determine odex file name: " << error_msg;
306 return cached_odex_file_name_found_ ? &cached_odex_file_name_ : nullptr;
309 bool OatFileAssistant::OdexFileExists() {
310 return GetOdexFile() != nullptr;
313 OatFileAssistant::OatStatus OatFileAssistant::OdexFileStatus() {
314 if (OdexFileIsOutOfDate()) {
315 return kOatOutOfDate;
317 if (OdexFileIsUpToDate()) {
320 return kOatNeedsRelocation;
323 bool OatFileAssistant::OdexFileIsOutOfDate() {
324 if (!odex_file_is_out_of_date_attempted_) {
325 odex_file_is_out_of_date_attempted_ = true;
326 const OatFile* odex_file = GetOdexFile();
327 if (odex_file == nullptr) {
328 cached_odex_file_is_out_of_date_ = true;
330 cached_odex_file_is_out_of_date_ = GivenOatFileIsOutOfDate(*odex_file);
333 return cached_odex_file_is_out_of_date_;
336 bool OatFileAssistant::OdexFileNeedsRelocation() {
337 return OdexFileStatus() == kOatNeedsRelocation;
340 bool OatFileAssistant::OdexFileIsUpToDate() {
341 if (!odex_file_is_up_to_date_attempted_) {
342 odex_file_is_up_to_date_attempted_ = true;
343 const OatFile* odex_file = GetOdexFile();
344 if (odex_file == nullptr) {
345 cached_odex_file_is_up_to_date_ = false;
347 cached_odex_file_is_up_to_date_ = GivenOatFileIsUpToDate(*odex_file);
350 return cached_odex_file_is_up_to_date_;
353 std::string OatFileAssistant::ArtFileName(const OatFile* oat_file) const {
354 const std::string oat_file_location = oat_file->GetLocation();
355 // Replace extension with .art
356 const size_t last_ext = oat_file_location.find_last_of('.');
357 if (last_ext == std::string::npos) {
358 LOG(ERROR) << "No extension in oat file " << oat_file_location;
359 return std::string();
361 return oat_file_location.substr(0, last_ext) + ".art";
364 const std::string* OatFileAssistant::OatFileName() {
365 if (!cached_oat_file_name_attempted_) {
366 cached_oat_file_name_attempted_ = true;
368 // Compute the oat file name from the dex location.
369 // TODO: The oat file assistant should be the definitive place for
370 // determining the oat file name from the dex location, not
371 // GetDalvikCacheFilename.
372 std::string cache_dir = StringPrintf("%s%s",
373 DalvikCacheDirectory().c_str(), GetInstructionSetString(isa_));
374 std::string error_msg;
375 cached_oat_file_name_found_ = GetDalvikCacheFilename(dex_location_.c_str(),
376 cache_dir.c_str(), &cached_oat_file_name_, &error_msg);
377 if (!cached_oat_file_name_found_) {
378 // If we can't determine the oat file name, we treat the oat file as
380 LOG(WARNING) << "Failed to determine oat file name for dex location "
381 << dex_location_ << ": " << error_msg;
384 return cached_oat_file_name_found_ ? &cached_oat_file_name_ : nullptr;
387 bool OatFileAssistant::OatFileExists() {
388 return GetOatFile() != nullptr;
391 OatFileAssistant::OatStatus OatFileAssistant::OatFileStatus() {
392 if (OatFileIsOutOfDate()) {
393 return kOatOutOfDate;
395 if (OatFileIsUpToDate()) {
398 return kOatNeedsRelocation;
401 bool OatFileAssistant::OatFileIsOutOfDate() {
402 if (!oat_file_is_out_of_date_attempted_) {
403 oat_file_is_out_of_date_attempted_ = true;
404 const OatFile* oat_file = GetOatFile();
405 if (oat_file == nullptr) {
406 cached_oat_file_is_out_of_date_ = true;
408 cached_oat_file_is_out_of_date_ = GivenOatFileIsOutOfDate(*oat_file);
411 return cached_oat_file_is_out_of_date_;
414 bool OatFileAssistant::OatFileNeedsRelocation() {
415 return OatFileStatus() == kOatNeedsRelocation;
418 bool OatFileAssistant::OatFileIsUpToDate() {
419 if (!oat_file_is_up_to_date_attempted_) {
420 oat_file_is_up_to_date_attempted_ = true;
421 const OatFile* oat_file = GetOatFile();
422 if (oat_file == nullptr) {
423 cached_oat_file_is_up_to_date_ = false;
425 cached_oat_file_is_up_to_date_ = GivenOatFileIsUpToDate(*oat_file);
428 return cached_oat_file_is_up_to_date_;
431 OatFileAssistant::OatStatus OatFileAssistant::GivenOatFileStatus(const OatFile& file) {
432 // TODO: This could cause GivenOatFileIsOutOfDate to be called twice, which
433 // is more work than we need to do. If performance becomes a concern, and
434 // this method is actually called, this should be fixed.
435 if (GivenOatFileIsOutOfDate(file)) {
436 return kOatOutOfDate;
438 if (GivenOatFileIsUpToDate(file)) {
441 return kOatNeedsRelocation;
444 bool OatFileAssistant::GivenOatFileIsOutOfDate(const OatFile& file) {
445 // Verify the dex checksum.
446 // Note: GetOatDexFile will return null if the dex checksum doesn't match
447 // what we provide, which verifies the primary dex checksum for us.
448 const uint32_t* dex_checksum_pointer = GetRequiredDexChecksum();
449 const OatFile::OatDexFile* oat_dex_file = file.GetOatDexFile(
450 dex_location_.c_str(), dex_checksum_pointer, false);
451 if (oat_dex_file == nullptr) {
455 // Verify the dex checksums for any secondary multidex files
456 for (size_t i = 1; ; i++) {
457 std::string secondary_dex_location
458 = DexFile::GetMultiDexLocation(i, dex_location_.c_str());
459 const OatFile::OatDexFile* secondary_oat_dex_file
460 = file.GetOatDexFile(secondary_dex_location.c_str(), nullptr, false);
461 if (secondary_oat_dex_file == nullptr) {
462 // There are no more secondary dex files to check.
466 std::string error_msg;
467 uint32_t expected_secondary_checksum = 0;
468 if (DexFile::GetChecksum(secondary_dex_location.c_str(),
469 &expected_secondary_checksum, &error_msg)) {
470 uint32_t actual_secondary_checksum
471 = secondary_oat_dex_file->GetDexFileLocationChecksum();
472 if (expected_secondary_checksum != actual_secondary_checksum) {
473 VLOG(oat) << "Dex checksum does not match for secondary dex: "
474 << secondary_dex_location
475 << ". Expected: " << expected_secondary_checksum
476 << ", Actual: " << actual_secondary_checksum;
480 // If we can't get the checksum for the secondary location, we assume
481 // the dex checksum is up to date for this and all other secondary dex
487 CompilerFilter::Filter current_compiler_filter = file.GetCompilerFilter();
488 VLOG(oat) << "Compiler filter for " << file.GetLocation() << " is " << current_compiler_filter;
490 // Verify the image checksum
491 if (CompilerFilter::DependsOnImageChecksum(current_compiler_filter)) {
492 const ImageInfo* image_info = GetImageInfo();
493 if (image_info == nullptr) {
494 VLOG(oat) << "No image for oat image checksum to match against.";
496 if (HasOriginalDexFiles()) {
500 // If there is no original dex file to fall back to, grudgingly accept
501 // the oat file. This could technically lead to crashes, but there's no
502 // way we could find a better oat file to use for this dex location,
503 // and it's better than being stuck in a boot loop with no way out.
504 // The problem will hopefully resolve itself the next time the runtime
506 LOG(WARNING) << "Dex location " << dex_location_ << " does not seem to include dex file. "
507 << "Allow oat file use. This is potentially dangerous.";
508 } else if (file.GetOatHeader().GetImageFileLocationOatChecksum()
509 != GetCombinedImageChecksum()) {
510 VLOG(oat) << "Oat image checksum does not match image checksum.";
514 VLOG(oat) << "Image checksum test skipped for compiler filter " << current_compiler_filter;
517 // Verify the profile hasn't changed recently.
518 // TODO: Move this check to OatFileCompilerFilterIsOkay? Nothing bad should
519 // happen if we use an oat file compiled with an out-of-date profile.
520 if (CompilerFilter::DependsOnProfile(current_compiler_filter)) {
521 if (profile_changed_) {
522 VLOG(oat) << "The profile has changed recently.";
526 VLOG(oat) << "Profile check skipped for compiler filter " << current_compiler_filter;
529 // Everything looks good; the dex file is not out of date.
533 bool OatFileAssistant::GivenOatFileNeedsRelocation(const OatFile& file) {
534 return GivenOatFileStatus(file) == kOatNeedsRelocation;
537 bool OatFileAssistant::GivenOatFileIsUpToDate(const OatFile& file) {
538 if (GivenOatFileIsOutOfDate(file)) {
542 CompilerFilter::Filter current_compiler_filter = file.GetCompilerFilter();
544 if (CompilerFilter::IsCompilationEnabled(current_compiler_filter)) {
546 const ImageInfo* image_info = GetImageInfo();
547 if (image_info == nullptr) {
548 VLOG(oat) << "No image to check oat relocation against.";
552 // Verify the oat_data_begin recorded for the image in the oat file matches
553 // the actual oat_data_begin for boot.oat in the image.
554 const OatHeader& oat_header = file.GetOatHeader();
555 uintptr_t oat_data_begin = oat_header.GetImageFileLocationOatDataBegin();
556 if (oat_data_begin != image_info->oat_data_begin) {
557 VLOG(oat) << file.GetLocation() <<
558 ": Oat file image oat_data_begin (" << oat_data_begin << ")"
559 << " does not match actual image oat_data_begin ("
560 << image_info->oat_data_begin << ")";
564 // Verify the oat_patch_delta recorded for the image in the oat file matches
565 // the actual oat_patch_delta for the image.
566 int32_t oat_patch_delta = oat_header.GetImagePatchDelta();
567 if (oat_patch_delta != image_info->patch_delta) {
568 VLOG(oat) << file.GetLocation() <<
569 ": Oat file image patch delta (" << oat_patch_delta << ")"
570 << " does not match actual image patch delta ("
571 << image_info->patch_delta << ")";
575 // Oat files compiled in PIC mode do not require relocation.
576 VLOG(oat) << "Oat relocation test skipped for PIC oat file";
579 VLOG(oat) << "Oat relocation test skipped for compiler filter " << current_compiler_filter;
584 OatFileAssistant::ResultOfAttemptToUpdate
585 OatFileAssistant::RelocateOatFile(const std::string* input_file, std::string* error_msg) {
586 CHECK(error_msg != nullptr);
588 if (input_file == nullptr) {
589 *error_msg = "Patching of oat file for dex location " + dex_location_
590 + " not attempted because the input file name could not be determined.";
591 return kUpdateNotAttempted;
593 const std::string& input_file_name = *input_file;
595 if (OatFileName() == nullptr) {
596 *error_msg = "Patching of oat file for dex location " + dex_location_
597 + " not attempted because the oat file name could not be determined.";
598 return kUpdateNotAttempted;
600 const std::string& oat_file_name = *OatFileName();
602 const ImageInfo* image_info = GetImageInfo();
603 Runtime* runtime = Runtime::Current();
604 if (image_info == nullptr) {
605 *error_msg = "Patching of oat file " + oat_file_name
606 + " not attempted because no image location was found.";
607 return kUpdateNotAttempted;
610 if (!runtime->IsDex2OatEnabled()) {
611 *error_msg = "Patching of oat file " + oat_file_name
612 + " not attempted because dex2oat is disabled";
613 return kUpdateNotAttempted;
616 std::vector<std::string> argv;
617 argv.push_back(runtime->GetPatchoatExecutable());
618 argv.push_back("--instruction-set=" + std::string(GetInstructionSetString(isa_)));
619 argv.push_back("--input-oat-file=" + input_file_name);
620 argv.push_back("--output-oat-file=" + oat_file_name);
621 argv.push_back("--patched-image-location=" + image_info->location);
623 std::string command_line(Join(argv, ' '));
624 if (!Exec(argv, error_msg)) {
625 // Manually delete the file. This ensures there is no garbage left over if
626 // the process unexpectedly died.
627 unlink(oat_file_name.c_str());
628 return kUpdateFailed;
631 // Mark that the oat file has changed and we should try to reload.
633 return kUpdateSucceeded;
636 OatFileAssistant::ResultOfAttemptToUpdate
637 OatFileAssistant::GenerateOatFile(CompilerFilter::Filter target, std::string* error_msg) {
638 CHECK(error_msg != nullptr);
640 Runtime* runtime = Runtime::Current();
641 if (!runtime->IsDex2OatEnabled()) {
642 *error_msg = "Generation of oat file for dex location " + dex_location_
643 + " not attempted because dex2oat is disabled.";
644 return kUpdateNotAttempted;
647 if (OatFileName() == nullptr) {
648 *error_msg = "Generation of oat file for dex location " + dex_location_
649 + " not attempted because the oat file name could not be determined.";
650 return kUpdateNotAttempted;
652 const std::string& oat_file_name = *OatFileName();
654 // dex2oat ignores missing dex files and doesn't report an error.
655 // Check explicitly here so we can detect the error properly.
656 // TODO: Why does dex2oat behave that way?
657 if (!OS::FileExists(dex_location_.c_str())) {
658 *error_msg = "Dex location " + dex_location_ + " does not exists.";
659 return kUpdateNotAttempted;
662 std::unique_ptr<File> oat_file;
663 oat_file.reset(OS::CreateEmptyFile(oat_file_name.c_str()));
664 if (oat_file.get() == nullptr) {
665 *error_msg = "Generation of oat file " + oat_file_name
666 + " not attempted because the oat file could not be created.";
667 return kUpdateNotAttempted;
670 if (fchmod(oat_file->Fd(), 0644) != 0) {
671 *error_msg = "Generation of oat file " + oat_file_name
672 + " not attempted because the oat file could not be made world readable.";
674 return kUpdateNotAttempted;
677 std::vector<std::string> args;
678 args.push_back("--dex-file=" + dex_location_);
679 args.push_back("--oat-fd=" + std::to_string(oat_file->Fd()));
680 args.push_back("--oat-location=" + oat_file_name);
681 args.push_back("--compiler-filter=" + CompilerFilter::NameOfFilter(target));
683 if (!Dex2Oat(args, error_msg)) {
684 // Manually delete the file. This ensures there is no garbage left over if
685 // the process unexpectedly died.
687 unlink(oat_file_name.c_str());
688 return kUpdateFailed;
691 if (oat_file->FlushCloseOrErase() != 0) {
692 *error_msg = "Unable to close oat file " + oat_file_name;
693 unlink(oat_file_name.c_str());
694 return kUpdateFailed;
697 // Mark that the oat file has changed and we should try to reload.
699 return kUpdateSucceeded;
702 bool OatFileAssistant::Dex2Oat(const std::vector<std::string>& args,
703 std::string* error_msg) {
704 Runtime* runtime = Runtime::Current();
705 std::string image_location = ImageLocation();
706 if (image_location.empty()) {
707 *error_msg = "No image location found for Dex2Oat.";
711 std::vector<std::string> argv;
712 argv.push_back(runtime->GetCompilerExecutable());
713 argv.push_back("--runtime-arg");
714 argv.push_back("-classpath");
715 argv.push_back("--runtime-arg");
716 argv.push_back(runtime->GetClassPathString());
717 if (runtime->IsDebuggable()) {
718 argv.push_back("--debuggable");
720 runtime->AddCurrentRuntimeFeaturesAsDex2OatArguments(&argv);
722 if (!runtime->IsVerificationEnabled()) {
723 argv.push_back("--compiler-filter=verify-none");
726 if (runtime->MustRelocateIfPossible()) {
727 argv.push_back("--runtime-arg");
728 argv.push_back("-Xrelocate");
730 argv.push_back("--runtime-arg");
731 argv.push_back("-Xnorelocate");
734 if (!kIsTargetBuild) {
735 argv.push_back("--host");
738 argv.push_back("--boot-image=" + image_location);
740 std::vector<std::string> compiler_options = runtime->GetCompilerOptions();
741 argv.insert(argv.end(), compiler_options.begin(), compiler_options.end());
743 argv.insert(argv.end(), args.begin(), args.end());
745 std::string command_line(Join(argv, ' '));
746 return Exec(argv, error_msg);
749 bool OatFileAssistant::DexFilenameToOdexFilename(const std::string& location,
750 InstructionSet isa, std::string* odex_filename, std::string* error_msg) {
751 CHECK(odex_filename != nullptr);
752 CHECK(error_msg != nullptr);
754 // The odex file name is formed by replacing the dex_location extension with
755 // .odex and inserting an oat/<isa> directory. For example:
756 // location = /foo/bar/baz.jar
757 // odex_location = /foo/bar/oat/<isa>/baz.odex
759 // Find the directory portion of the dex location and add the oat/<isa>
761 size_t pos = location.rfind('/');
762 if (pos == std::string::npos) {
763 *error_msg = "Dex location " + location + " has no directory.";
766 std::string dir = location.substr(0, pos+1);
767 dir += "oat/" + std::string(GetInstructionSetString(isa));
769 // Find the file portion of the dex location.
771 if (pos == std::string::npos) {
774 file = location.substr(pos+1);
777 // Get the base part of the file without the extension.
778 pos = file.rfind('.');
779 if (pos == std::string::npos) {
780 *error_msg = "Dex location " + location + " has no extension.";
783 std::string base = file.substr(0, pos);
785 *odex_filename = dir + "/" + base + ".odex";
789 std::string OatFileAssistant::DalvikCacheDirectory() {
790 // Note: We don't cache this, because it will only be called once by
793 // TODO: The work done in GetDalvikCache is overkill for what we need.
794 // Ideally a new API for getting the DalvikCacheDirectory the way we want
795 // (without existence testing, creation, or death) is provided with the rest
796 // of the GetDalvikCache family of functions. Until such an API is in place,
797 // we use GetDalvikCache to avoid duplicating the logic for determining the
798 // dalvik cache directory.
800 bool have_android_data;
801 bool dalvik_cache_exists;
802 bool is_global_cache;
803 GetDalvikCache("", false, &result, &have_android_data, &dalvik_cache_exists, &is_global_cache);
807 std::string OatFileAssistant::ImageLocation() {
808 Runtime* runtime = Runtime::Current();
809 const std::vector<gc::space::ImageSpace*>& image_spaces =
810 runtime->GetHeap()->GetBootImageSpaces();
811 if (image_spaces.empty()) {
814 return image_spaces[0]->GetImageLocation();
817 const uint32_t* OatFileAssistant::GetRequiredDexChecksum() {
818 if (!required_dex_checksum_attempted_) {
819 required_dex_checksum_attempted_ = true;
820 required_dex_checksum_found_ = false;
821 std::string error_msg;
822 if (DexFile::GetChecksum(dex_location_.c_str(), &cached_required_dex_checksum_, &error_msg)) {
823 required_dex_checksum_found_ = true;
824 has_original_dex_files_ = true;
826 // This can happen if the original dex file has been stripped from the
828 VLOG(oat) << "OatFileAssistant: " << error_msg;
829 has_original_dex_files_ = false;
831 // Get the checksum from the odex if we can.
832 const OatFile* odex_file = GetOdexFile();
833 if (odex_file != nullptr) {
834 const OatFile::OatDexFile* odex_dex_file = odex_file->GetOatDexFile(
835 dex_location_.c_str(), nullptr, false);
836 if (odex_dex_file != nullptr) {
837 cached_required_dex_checksum_ = odex_dex_file->GetDexFileLocationChecksum();
838 required_dex_checksum_found_ = true;
843 return required_dex_checksum_found_ ? &cached_required_dex_checksum_ : nullptr;
846 const OatFile* OatFileAssistant::GetOdexFile() {
847 CHECK(!oat_file_released_) << "OdexFile called after oat file released.";
848 if (!odex_file_load_attempted_) {
849 odex_file_load_attempted_ = true;
850 if (OdexFileName() != nullptr) {
851 const std::string& odex_file_name = *OdexFileName();
852 std::string error_msg;
853 cached_odex_file_.reset(OatFile::Open(odex_file_name.c_str(),
854 odex_file_name.c_str(),
859 dex_location_.c_str(),
861 if (cached_odex_file_.get() == nullptr) {
862 VLOG(oat) << "OatFileAssistant test for existing pre-compiled oat file "
863 << odex_file_name << ": " << error_msg;
867 return cached_odex_file_.get();
870 bool OatFileAssistant::OdexFileIsExecutable() {
871 const OatFile* odex_file = GetOdexFile();
872 return (odex_file != nullptr && odex_file->IsExecutable());
875 bool OatFileAssistant::OdexFileHasPatchInfo() {
876 const OatFile* odex_file = GetOdexFile();
877 return (odex_file != nullptr && odex_file->HasPatchInfo());
880 void OatFileAssistant::ClearOdexFileCache() {
881 odex_file_load_attempted_ = false;
882 cached_odex_file_.reset();
883 odex_file_is_out_of_date_attempted_ = false;
884 odex_file_is_up_to_date_attempted_ = false;
887 const OatFile* OatFileAssistant::GetOatFile() {
888 CHECK(!oat_file_released_) << "OatFile called after oat file released.";
889 if (!oat_file_load_attempted_) {
890 oat_file_load_attempted_ = true;
891 if (OatFileName() != nullptr) {
892 const std::string& oat_file_name = *OatFileName();
893 std::string error_msg;
894 cached_oat_file_.reset(OatFile::Open(oat_file_name.c_str(),
895 oat_file_name.c_str(),
900 dex_location_.c_str(),
902 if (cached_oat_file_.get() == nullptr) {
903 VLOG(oat) << "OatFileAssistant test for existing oat file "
904 << oat_file_name << ": " << error_msg;
908 return cached_oat_file_.get();
911 bool OatFileAssistant::OatFileIsExecutable() {
912 const OatFile* oat_file = GetOatFile();
913 return (oat_file != nullptr && oat_file->IsExecutable());
916 bool OatFileAssistant::OatFileHasPatchInfo() {
917 const OatFile* oat_file = GetOatFile();
918 return (oat_file != nullptr && oat_file->HasPatchInfo());
921 void OatFileAssistant::ClearOatFileCache() {
922 oat_file_load_attempted_ = false;
923 cached_oat_file_.reset();
924 oat_file_is_out_of_date_attempted_ = false;
925 oat_file_is_up_to_date_attempted_ = false;
928 const OatFileAssistant::ImageInfo* OatFileAssistant::GetImageInfo() {
929 if (!image_info_load_attempted_) {
930 image_info_load_attempted_ = true;
932 Runtime* runtime = Runtime::Current();
933 std::vector<gc::space::ImageSpace*> image_spaces = runtime->GetHeap()->GetBootImageSpaces();
934 if (!image_spaces.empty()) {
935 cached_image_info_.location = image_spaces[0]->GetImageLocation();
937 if (isa_ == kRuntimeISA) {
938 const ImageHeader& image_header = image_spaces[0]->GetImageHeader();
939 cached_image_info_.oat_checksum = image_header.GetOatChecksum();
940 cached_image_info_.oat_data_begin = reinterpret_cast<uintptr_t>(
941 image_header.GetOatDataBegin());
942 cached_image_info_.patch_delta = image_header.GetPatchDelta();
944 std::unique_ptr<ImageHeader> image_header(
945 gc::space::ImageSpace::ReadImageHeaderOrDie(cached_image_info_.location.c_str(), isa_));
946 cached_image_info_.oat_checksum = image_header->GetOatChecksum();
947 cached_image_info_.oat_data_begin = reinterpret_cast<uintptr_t>(
948 image_header->GetOatDataBegin());
949 cached_image_info_.patch_delta = image_header->GetPatchDelta();
952 image_info_load_succeeded_ = (!image_spaces.empty());
954 combined_image_checksum_ = CalculateCombinedImageChecksum(isa_);
956 return image_info_load_succeeded_ ? &cached_image_info_ : nullptr;
959 // TODO: Use something better than xor.
960 uint32_t OatFileAssistant::CalculateCombinedImageChecksum(InstructionSet isa) {
961 uint32_t checksum = 0;
962 std::vector<gc::space::ImageSpace*> image_spaces =
963 Runtime::Current()->GetHeap()->GetBootImageSpaces();
964 if (isa == kRuntimeISA) {
965 for (gc::space::ImageSpace* image_space : image_spaces) {
966 checksum ^= image_space->GetImageHeader().GetOatChecksum();
969 for (gc::space::ImageSpace* image_space : image_spaces) {
970 std::string location = image_space->GetImageLocation();
971 std::unique_ptr<ImageHeader> image_header(
972 gc::space::ImageSpace::ReadImageHeaderOrDie(location.c_str(), isa));
973 checksum ^= image_header->GetOatChecksum();
979 uint32_t OatFileAssistant::GetCombinedImageChecksum() {
980 if (!image_info_load_attempted_) {
983 return combined_image_checksum_;
986 gc::space::ImageSpace* OatFileAssistant::OpenImageSpace(const OatFile* oat_file) {
987 DCHECK(oat_file != nullptr);
988 std::string art_file = ArtFileName(oat_file);
989 if (art_file.empty()) {
992 std::string error_msg;
993 ScopedObjectAccess soa(Thread::Current());
994 gc::space::ImageSpace* ret = gc::space::ImageSpace::CreateFromAppImage(art_file.c_str(),
997 if (ret == nullptr && (VLOG_IS_ON(image) || OS::FileExists(art_file.c_str()))) {
998 LOG(INFO) << "Failed to open app image " << art_file.c_str() << " " << error_msg;