| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "image_space.h" |
| |
| #include <dirent.h> |
| #include <sys/types.h> |
| |
| #include <random> |
| |
| #include "base/stl_util.h" |
| #include "base/unix_file/fd_file.h" |
| #include "base/scoped_flock.h" |
| #include "gc/accounting/space_bitmap-inl.h" |
| #include "mirror/art_method.h" |
| #include "mirror/class-inl.h" |
| #include "mirror/object-inl.h" |
| #include "oat_file.h" |
| #include "os.h" |
| #include "space-inl.h" |
| #include "utils.h" |
| |
| namespace art { |
| namespace gc { |
| namespace space { |
| |
| Atomic<uint32_t> ImageSpace::bitmap_index_(0); |
| |
| ImageSpace::ImageSpace(const std::string& image_filename, const char* image_location, |
| MemMap* mem_map, accounting::ContinuousSpaceBitmap* live_bitmap) |
| : MemMapSpace(image_filename, mem_map, mem_map->Begin(), mem_map->End(), mem_map->End(), |
| kGcRetentionPolicyNeverCollect), |
| image_location_(image_location) { |
| DCHECK(live_bitmap != nullptr); |
| live_bitmap_.reset(live_bitmap); |
| } |
| |
| static int32_t ChooseRelocationOffsetDelta(int32_t min_delta, int32_t max_delta) { |
| CHECK_ALIGNED(min_delta, kPageSize); |
| CHECK_ALIGNED(max_delta, kPageSize); |
| CHECK_LT(min_delta, max_delta); |
| |
| std::default_random_engine generator; |
| generator.seed(NanoTime() * getpid()); |
| std::uniform_int_distribution<int32_t> distribution(min_delta, max_delta); |
| int32_t r = distribution(generator); |
| if (r % 2 == 0) { |
| r = RoundUp(r, kPageSize); |
| } else { |
| r = RoundDown(r, kPageSize); |
| } |
| CHECK_LE(min_delta, r); |
| CHECK_GE(max_delta, r); |
| CHECK_ALIGNED(r, kPageSize); |
| return r; |
| } |
| |
| // We are relocating or generating the core image. We should get rid of everything. It is all |
| // out-of-date. We also don't really care if this fails since it is just a convienence. |
| // Adapted from prune_dex_cache(const char* subdir) in frameworks/native/cmds/installd/commands.c |
| // Note this should only be used during first boot. |
| static void RealPruneDexCache(const std::string& cache_dir_path); |
| static void PruneDexCache(InstructionSet isa) { |
| CHECK_NE(isa, kNone); |
| // Prune the base /data/dalvik-cache |
| RealPruneDexCache(GetDalvikCacheOrDie(".", false)); |
| // prune /data/dalvik-cache/<isa> |
| RealPruneDexCache(GetDalvikCacheOrDie(GetInstructionSetString(isa), false)); |
| } |
| static void RealPruneDexCache(const std::string& cache_dir_path) { |
| if (!OS::DirectoryExists(cache_dir_path.c_str())) { |
| return; |
| } |
| DIR* cache_dir = opendir(cache_dir_path.c_str()); |
| if (cache_dir == nullptr) { |
| PLOG(WARNING) << "Unable to open " << cache_dir_path << " to delete it's contents"; |
| return; |
| } |
| |
| for (struct dirent* de = readdir(cache_dir); de != nullptr; de = readdir(cache_dir)) { |
| const char* name = de->d_name; |
| if (strcmp(name, ".") == 0 || strcmp(name, "..") == 0) { |
| continue; |
| } |
| // We only want to delete regular files. |
| if (de->d_type != DT_REG) { |
| if (de->d_type != DT_DIR) { |
| // We do expect some directories (namely the <isa> for pruning the base dalvik-cache). |
| LOG(WARNING) << "Unexpected file type of " << std::hex << de->d_type << " encountered."; |
| } |
| continue; |
| } |
| std::string cache_file(cache_dir_path); |
| cache_file += '/'; |
| cache_file += name; |
| if (TEMP_FAILURE_RETRY(unlink(cache_file.c_str())) != 0) { |
| PLOG(ERROR) << "Unable to unlink " << cache_file; |
| continue; |
| } |
| } |
| CHECK_EQ(0, TEMP_FAILURE_RETRY(closedir(cache_dir))) << "Unable to close directory."; |
| } |
| |
| static void RemoveImageFiles(const std::string& image_filename, std::string* error_msg) { |
| if (TEMP_FAILURE_RETRY(unlink(image_filename.c_str())) != 0) { |
| *error_msg = StringPrintf("Failed to remove image file after previous error: %s", |
| error_msg->c_str()); |
| } |
| std::string oat_filename(ImageHeader::GetOatLocationFromImageLocation(image_filename)); |
| if (TEMP_FAILURE_RETRY(unlink(oat_filename.c_str())) != 0) { |
| *error_msg = StringPrintf("Failed to remove oat file after previous error: %s", |
| error_msg->c_str()); |
| } |
| } |
| |
| static bool GenerateImage(const std::string& image_filename, InstructionSet image_isa, |
| std::string* error_msg) { |
| const std::string boot_class_path_string(Runtime::Current()->GetBootClassPathString()); |
| std::vector<std::string> boot_class_path; |
| Split(boot_class_path_string, ':', boot_class_path); |
| if (boot_class_path.empty()) { |
| *error_msg = "Failed to generate image because no boot class path specified"; |
| return false; |
| } |
| // We should clean up so we are more likely to have room for the image. |
| if (Runtime::Current()->IsZygote()) { |
| LOG(INFO) << "Pruning dalvik-cache since we are generating an image and will need to recompile"; |
| PruneDexCache(image_isa); |
| } |
| |
| std::vector<std::string> arg_vector; |
| |
| std::string dex2oat(Runtime::Current()->GetCompilerExecutable()); |
| arg_vector.push_back(dex2oat); |
| |
| std::string image_option_string("--image="); |
| image_option_string += image_filename; |
| arg_vector.push_back(image_option_string); |
| |
| for (size_t i = 0; i < boot_class_path.size(); i++) { |
| arg_vector.push_back(std::string("--dex-file=") + boot_class_path[i]); |
| } |
| |
| std::string oat_file_option_string("--oat-file="); |
| oat_file_option_string += ImageHeader::GetOatLocationFromImageLocation(image_filename); |
| arg_vector.push_back(oat_file_option_string); |
| |
| Runtime::Current()->AddCurrentRuntimeFeaturesAsDex2OatArguments(&arg_vector); |
| CHECK_EQ(image_isa, kRuntimeISA) |
| << "We should always be generating an image for the current isa."; |
| |
| int32_t base_offset = ChooseRelocationOffsetDelta(ART_BASE_ADDRESS_MIN_DELTA, |
| ART_BASE_ADDRESS_MAX_DELTA); |
| LOG(INFO) << "Using an offset of 0x" << std::hex << base_offset << " from default " |
| << "art base address of 0x" << std::hex << ART_BASE_ADDRESS; |
| arg_vector.push_back(StringPrintf("--base=0x%x", ART_BASE_ADDRESS + base_offset)); |
| |
| if (!kIsTargetBuild) { |
| arg_vector.push_back("--host"); |
| } |
| |
| const std::vector<std::string>& compiler_options = Runtime::Current()->GetImageCompilerOptions(); |
| for (size_t i = 0; i < compiler_options.size(); ++i) { |
| arg_vector.push_back(compiler_options[i].c_str()); |
| } |
| |
| std::string command_line(Join(arg_vector, ' ')); |
| LOG(INFO) << "GenerateImage: " << command_line; |
| return Exec(arg_vector, error_msg); |
| } |
| |
| bool ImageSpace::FindImageFilename(const char* image_location, |
| const InstructionSet image_isa, |
| std::string* system_filename, |
| bool* has_system, |
| std::string* cache_filename, |
| bool* dalvik_cache_exists, |
| bool* has_cache, |
| bool* is_global_cache) { |
| *has_system = false; |
| *has_cache = false; |
| // image_location = /system/framework/boot.art |
| // system_image_location = /system/framework/<image_isa>/boot.art |
| std::string system_image_filename(GetSystemImageFilename(image_location, image_isa)); |
| if (OS::FileExists(system_image_filename.c_str())) { |
| *system_filename = system_image_filename; |
| *has_system = true; |
| } |
| |
| bool have_android_data = false; |
| *dalvik_cache_exists = false; |
| std::string dalvik_cache; |
| GetDalvikCache(GetInstructionSetString(image_isa), true, &dalvik_cache, |
| &have_android_data, dalvik_cache_exists, is_global_cache); |
| |
| if (have_android_data && *dalvik_cache_exists) { |
| // Always set output location even if it does not exist, |
| // so that the caller knows where to create the image. |
| // |
| // image_location = /system/framework/boot.art |
| // *image_filename = /data/dalvik-cache/<image_isa>/boot.art |
| std::string error_msg; |
| if (!GetDalvikCacheFilename(image_location, dalvik_cache.c_str(), cache_filename, &error_msg)) { |
| LOG(WARNING) << error_msg; |
| return *has_system; |
| } |
| *has_cache = OS::FileExists(cache_filename->c_str()); |
| } |
| return *has_system || *has_cache; |
| } |
| |
| static bool ReadSpecificImageHeader(const char* filename, ImageHeader* image_header) { |
| std::unique_ptr<File> image_file(OS::OpenFileForReading(filename)); |
| if (image_file.get() == nullptr) { |
| return false; |
| } |
| const bool success = image_file->ReadFully(image_header, sizeof(ImageHeader)); |
| if (!success || !image_header->IsValid()) { |
| return false; |
| } |
| return true; |
| } |
| |
| // Relocate the image at image_location to dest_filename and relocate it by a random amount. |
| static bool RelocateImage(const char* image_location, const char* dest_filename, |
| InstructionSet isa, std::string* error_msg) { |
| // We should clean up so we are more likely to have room for the image. |
| if (Runtime::Current()->IsZygote()) { |
| LOG(INFO) << "Pruning dalvik-cache since we are relocating an image and will need to recompile"; |
| PruneDexCache(isa); |
| } |
| |
| std::string patchoat(Runtime::Current()->GetPatchoatExecutable()); |
| |
| std::string input_image_location_arg("--input-image-location="); |
| input_image_location_arg += image_location; |
| |
| std::string output_image_filename_arg("--output-image-file="); |
| output_image_filename_arg += dest_filename; |
| |
| std::string input_oat_location_arg("--input-oat-location="); |
| input_oat_location_arg += ImageHeader::GetOatLocationFromImageLocation(image_location); |
| |
| std::string output_oat_filename_arg("--output-oat-file="); |
| output_oat_filename_arg += ImageHeader::GetOatLocationFromImageLocation(dest_filename); |
| |
| std::string instruction_set_arg("--instruction-set="); |
| instruction_set_arg += GetInstructionSetString(isa); |
| |
| std::string base_offset_arg("--base-offset-delta="); |
| StringAppendF(&base_offset_arg, "%d", ChooseRelocationOffsetDelta(ART_BASE_ADDRESS_MIN_DELTA, |
| ART_BASE_ADDRESS_MAX_DELTA)); |
| |
| std::vector<std::string> argv; |
| argv.push_back(patchoat); |
| |
| argv.push_back(input_image_location_arg); |
| argv.push_back(output_image_filename_arg); |
| |
| argv.push_back(input_oat_location_arg); |
| argv.push_back(output_oat_filename_arg); |
| |
| argv.push_back(instruction_set_arg); |
| argv.push_back(base_offset_arg); |
| |
| std::string command_line(Join(argv, ' ')); |
| LOG(INFO) << "RelocateImage: " << command_line; |
| return Exec(argv, error_msg); |
| } |
| |
| static ImageHeader* ReadSpecificImageHeader(const char* filename, std::string* error_msg) { |
| std::unique_ptr<ImageHeader> hdr(new ImageHeader); |
| if (!ReadSpecificImageHeader(filename, hdr.get())) { |
| *error_msg = StringPrintf("Unable to read image header for %s", filename); |
| return nullptr; |
| } |
| return hdr.release(); |
| } |
| |
| ImageHeader* ImageSpace::ReadImageHeaderOrDie(const char* image_location, |
| const InstructionSet image_isa) { |
| std::string error_msg; |
| ImageHeader* image_header = ReadImageHeader(image_location, image_isa, &error_msg); |
| if (image_header == nullptr) { |
| LOG(FATAL) << error_msg; |
| } |
| return image_header; |
| } |
| |
| ImageHeader* ImageSpace::ReadImageHeader(const char* image_location, |
| const InstructionSet image_isa, |
| std::string* error_msg) { |
| std::string system_filename; |
| bool has_system = false; |
| std::string cache_filename; |
| bool has_cache = false; |
| bool dalvik_cache_exists = false; |
| bool is_global_cache = false; |
| if (FindImageFilename(image_location, image_isa, &system_filename, &has_system, |
| &cache_filename, &dalvik_cache_exists, &has_cache, &is_global_cache)) { |
| if (Runtime::Current()->ShouldRelocate()) { |
| if (has_system && has_cache) { |
| std::unique_ptr<ImageHeader> sys_hdr(new ImageHeader); |
| std::unique_ptr<ImageHeader> cache_hdr(new ImageHeader); |
| if (!ReadSpecificImageHeader(system_filename.c_str(), sys_hdr.get())) { |
| *error_msg = StringPrintf("Unable to read image header for %s at %s", |
| image_location, system_filename.c_str()); |
| return nullptr; |
| } |
| if (!ReadSpecificImageHeader(cache_filename.c_str(), cache_hdr.get())) { |
| *error_msg = StringPrintf("Unable to read image header for %s at %s", |
| image_location, cache_filename.c_str()); |
| return nullptr; |
| } |
| if (sys_hdr->GetOatChecksum() != cache_hdr->GetOatChecksum()) { |
| *error_msg = StringPrintf("Unable to find a relocated version of image file %s", |
| image_location); |
| return nullptr; |
| } |
| return cache_hdr.release(); |
| } else if (!has_cache) { |
| *error_msg = StringPrintf("Unable to find a relocated version of image file %s", |
| image_location); |
| return nullptr; |
| } else if (!has_system && has_cache) { |
| // This can probably just use the cache one. |
| return ReadSpecificImageHeader(cache_filename.c_str(), error_msg); |
| } |
| } else { |
| // We don't want to relocate, Just pick the appropriate one if we have it and return. |
| if (has_system && has_cache) { |
| // We want the cache if the checksum matches, otherwise the system. |
| std::unique_ptr<ImageHeader> system(ReadSpecificImageHeader(system_filename.c_str(), |
| error_msg)); |
| std::unique_ptr<ImageHeader> cache(ReadSpecificImageHeader(cache_filename.c_str(), |
| error_msg)); |
| if (system.get() == nullptr || |
| (cache.get() != nullptr && cache->GetOatChecksum() == system->GetOatChecksum())) { |
| return cache.release(); |
| } else { |
| return system.release(); |
| } |
| } else if (has_system) { |
| return ReadSpecificImageHeader(system_filename.c_str(), error_msg); |
| } else if (has_cache) { |
| return ReadSpecificImageHeader(cache_filename.c_str(), error_msg); |
| } |
| } |
| } |
| |
| *error_msg = StringPrintf("Unable to find image file for %s", image_location); |
| return nullptr; |
| } |
| |
| static bool ChecksumsMatch(const char* image_a, const char* image_b) { |
| ImageHeader hdr_a; |
| ImageHeader hdr_b; |
| return ReadSpecificImageHeader(image_a, &hdr_a) && ReadSpecificImageHeader(image_b, &hdr_b) |
| && hdr_a.GetOatChecksum() == hdr_b.GetOatChecksum(); |
| } |
| |
| static bool ImageCreationAllowed(bool is_global_cache, std::string* error_msg) { |
| // Anyone can write into a "local" cache. |
| if (!is_global_cache) { |
| return true; |
| } |
| |
| // Only the zygote is allowed to create the global boot image. |
| if (Runtime::Current()->IsZygote()) { |
| return true; |
| } |
| |
| *error_msg = "Only the zygote can create the global boot image."; |
| return false; |
| } |
| |
| ImageSpace* ImageSpace::Create(const char* image_location, |
| const InstructionSet image_isa, |
| std::string* error_msg) { |
| std::string system_filename; |
| bool has_system = false; |
| std::string cache_filename; |
| bool has_cache = false; |
| bool dalvik_cache_exists = false; |
| bool is_global_cache = true; |
| const bool found_image = FindImageFilename(image_location, image_isa, &system_filename, |
| &has_system, &cache_filename, &dalvik_cache_exists, |
| &has_cache, &is_global_cache); |
| |
| ImageSpace* space; |
| bool relocate = Runtime::Current()->ShouldRelocate(); |
| bool can_compile = Runtime::Current()->IsImageDex2OatEnabled(); |
| if (found_image) { |
| const std::string* image_filename; |
| bool is_system = false; |
| bool relocated_version_used = false; |
| if (relocate) { |
| if (!dalvik_cache_exists) { |
| *error_msg = StringPrintf("Requiring relocation for image '%s' at '%s' but we do not have " |
| "any dalvik_cache to find/place it in.", |
| image_location, system_filename.c_str()); |
| return nullptr; |
| } |
| if (has_system) { |
| if (has_cache && ChecksumsMatch(system_filename.c_str(), cache_filename.c_str())) { |
| // We already have a relocated version |
| image_filename = &cache_filename; |
| relocated_version_used = true; |
| } else { |
| // We cannot have a relocated version, Relocate the system one and use it. |
| |
| std::string reason; |
| bool success; |
| |
| // Check whether we are allowed to relocate. |
| if (!can_compile) { |
| reason = "Image dex2oat disabled by -Xnoimage-dex2oat."; |
| success = false; |
| } else if (!ImageCreationAllowed(is_global_cache, &reason)) { |
| // Whether we can write to the cache. |
| success = false; |
| } else { |
| // Try to relocate. |
| success = RelocateImage(image_location, cache_filename.c_str(), image_isa, &reason); |
| } |
| |
| if (success) { |
| relocated_version_used = true; |
| image_filename = &cache_filename; |
| } else { |
| *error_msg = StringPrintf("Unable to relocate image '%s' from '%s' to '%s': %s", |
| image_location, system_filename.c_str(), |
| cache_filename.c_str(), reason.c_str()); |
| RemoveImageFiles(cache_filename, error_msg); |
| return nullptr; |
| } |
| } |
| } else { |
| CHECK(has_cache); |
| // We can just use cache's since it should be fine. This might or might not be relocated. |
| image_filename = &cache_filename; |
| } |
| } else { |
| if (has_system && has_cache) { |
| // Check they have the same cksum. If they do use the cache. Otherwise system. |
| if (ChecksumsMatch(system_filename.c_str(), cache_filename.c_str())) { |
| image_filename = &cache_filename; |
| relocated_version_used = true; |
| } else { |
| image_filename = &system_filename; |
| is_system = true; |
| } |
| } else if (has_system) { |
| image_filename = &system_filename; |
| is_system = true; |
| } else { |
| CHECK(has_cache); |
| image_filename = &cache_filename; |
| } |
| } |
| { |
| // Note that we must not use the file descriptor associated with |
| // ScopedFlock::GetFile to Init the image file. We want the file |
| // descriptor (and the associated exclusive lock) to be released when |
| // we leave Create. |
| ScopedFlock image_lock; |
| image_lock.Init(image_filename->c_str(), error_msg); |
| VLOG(startup) << "Using image file " << image_filename->c_str() << " for image location " |
| << image_location; |
| // If we are in /system we can assume the image is good. We can also |
| // assume this if we are using a relocated image (i.e. image checksum |
| // matches) since this is only different by the offset. We need this to |
| // make sure that host tests continue to work. |
| space = ImageSpace::Init(image_filename->c_str(), image_location, |
| !(is_system || relocated_version_used), error_msg); |
| } |
| if (space != nullptr) { |
| return space; |
| } |
| |
| // If the /system file exists, it should be up-to-date, don't try to generate it. Same if it is |
| // a relocated copy from something in /system (i.e. checksum's match). |
| // Otherwise, log a warning and fall through to GenerateImage. |
| if (relocated_version_used) { |
| LOG(FATAL) << "Attempted to use relocated version of " << image_location << " " |
| << "at " << cache_filename << " generated from " << system_filename << " " |
| << "but image failed to load: " << error_msg; |
| return nullptr; |
| } else if (is_system) { |
| *error_msg = StringPrintf("Failed to load /system image '%s': %s", |
| image_filename->c_str(), error_msg->c_str()); |
| return nullptr; |
| } else { |
| LOG(WARNING) << *error_msg; |
| } |
| } |
| |
| if (!can_compile) { |
| *error_msg = "Not attempting to compile image because -Xnoimage-dex2oat"; |
| return nullptr; |
| } else if (!dalvik_cache_exists) { |
| *error_msg = StringPrintf("No place to put generated image."); |
| return nullptr; |
| } else if (!ImageCreationAllowed(is_global_cache, error_msg)) { |
| return nullptr; |
| } else if (!GenerateImage(cache_filename, image_isa, error_msg)) { |
| *error_msg = StringPrintf("Failed to generate image '%s': %s", |
| cache_filename.c_str(), error_msg->c_str()); |
| RemoveImageFiles(cache_filename, error_msg); |
| return nullptr; |
| } else { |
| // Note that we must not use the file descriptor associated with |
| // ScopedFlock::GetFile to Init the image file. We want the file |
| // descriptor (and the associated exclusive lock) to be released when |
| // we leave Create. |
| ScopedFlock image_lock; |
| image_lock.Init(cache_filename.c_str(), error_msg); |
| space = ImageSpace::Init(cache_filename.c_str(), image_location, true, error_msg); |
| if (space == nullptr) { |
| *error_msg = StringPrintf("Failed to load generated image '%s': %s", |
| cache_filename.c_str(), error_msg->c_str()); |
| } |
| return space; |
| } |
| } |
| |
| void ImageSpace::VerifyImageAllocations() { |
| byte* current = Begin() + RoundUp(sizeof(ImageHeader), kObjectAlignment); |
| while (current < End()) { |
| DCHECK_ALIGNED(current, kObjectAlignment); |
| mirror::Object* obj = reinterpret_cast<mirror::Object*>(current); |
| CHECK(live_bitmap_->Test(obj)); |
| CHECK(obj->GetClass() != nullptr) << "Image object at address " << obj << " has null class"; |
| if (kUseBakerOrBrooksReadBarrier) { |
| obj->AssertReadBarrierPointer(); |
| } |
| current += RoundUp(obj->SizeOf(), kObjectAlignment); |
| } |
| } |
| |
| ImageSpace* ImageSpace::Init(const char* image_filename, const char* image_location, |
| bool validate_oat_file, std::string* error_msg) { |
| CHECK(image_filename != nullptr); |
| CHECK(image_location != nullptr); |
| |
| uint64_t start_time = 0; |
| if (VLOG_IS_ON(heap) || VLOG_IS_ON(startup)) { |
| start_time = NanoTime(); |
| LOG(INFO) << "ImageSpace::Init entering image_filename=" << image_filename; |
| } |
| |
| std::unique_ptr<File> file(OS::OpenFileForReading(image_filename)); |
| if (file.get() == NULL) { |
| *error_msg = StringPrintf("Failed to open '%s'", image_filename); |
| return nullptr; |
| } |
| ImageHeader image_header; |
| bool success = file->ReadFully(&image_header, sizeof(image_header)); |
| if (!success || !image_header.IsValid()) { |
| *error_msg = StringPrintf("Invalid image header in '%s'", image_filename); |
| return nullptr; |
| } |
| |
| // Note: The image header is part of the image due to mmap page alignment required of offset. |
| std::unique_ptr<MemMap> map(MemMap::MapFileAtAddress(image_header.GetImageBegin(), |
| image_header.GetImageSize(), |
| PROT_READ | PROT_WRITE, |
| MAP_PRIVATE, |
| file->Fd(), |
| 0, |
| false, |
| image_filename, |
| error_msg)); |
| if (map.get() == NULL) { |
| DCHECK(!error_msg->empty()); |
| return nullptr; |
| } |
| CHECK_EQ(image_header.GetImageBegin(), map->Begin()); |
| DCHECK_EQ(0, memcmp(&image_header, map->Begin(), sizeof(ImageHeader))); |
| |
| std::unique_ptr<MemMap> image_map( |
| MemMap::MapFileAtAddress(nullptr, image_header.GetImageBitmapSize(), |
| PROT_READ, MAP_PRIVATE, |
| file->Fd(), image_header.GetBitmapOffset(), |
| false, |
| image_filename, |
| error_msg)); |
| if (image_map.get() == nullptr) { |
| *error_msg = StringPrintf("Failed to map image bitmap: %s", error_msg->c_str()); |
| return nullptr; |
| } |
| uint32_t bitmap_index = bitmap_index_.FetchAndAddSequentiallyConsistent(1); |
| std::string bitmap_name(StringPrintf("imagespace %s live-bitmap %u", image_filename, |
| bitmap_index)); |
| std::unique_ptr<accounting::ContinuousSpaceBitmap> bitmap( |
| accounting::ContinuousSpaceBitmap::CreateFromMemMap(bitmap_name, image_map.release(), |
| reinterpret_cast<byte*>(map->Begin()), |
| map->Size())); |
| if (bitmap.get() == nullptr) { |
| *error_msg = StringPrintf("Could not create bitmap '%s'", bitmap_name.c_str()); |
| return nullptr; |
| } |
| |
| std::unique_ptr<ImageSpace> space(new ImageSpace(image_filename, image_location, |
| map.release(), bitmap.release())); |
| |
| // VerifyImageAllocations() will be called later in Runtime::Init() |
| // as some class roots like ArtMethod::java_lang_reflect_ArtMethod_ |
| // and ArtField::java_lang_reflect_ArtField_, which are used from |
| // Object::SizeOf() which VerifyImageAllocations() calls, are not |
| // set yet at this point. |
| |
| space->oat_file_.reset(space->OpenOatFile(image_filename, error_msg)); |
| if (space->oat_file_.get() == nullptr) { |
| DCHECK(!error_msg->empty()); |
| return nullptr; |
| } |
| |
| if (validate_oat_file && !space->ValidateOatFile(error_msg)) { |
| DCHECK(!error_msg->empty()); |
| return nullptr; |
| } |
| |
| Runtime* runtime = Runtime::Current(); |
| runtime->SetInstructionSet(space->oat_file_->GetOatHeader().GetInstructionSet()); |
| |
| mirror::Object* resolution_method = image_header.GetImageRoot(ImageHeader::kResolutionMethod); |
| runtime->SetResolutionMethod(down_cast<mirror::ArtMethod*>(resolution_method)); |
| mirror::Object* imt_conflict_method = image_header.GetImageRoot(ImageHeader::kImtConflictMethod); |
| runtime->SetImtConflictMethod(down_cast<mirror::ArtMethod*>(imt_conflict_method)); |
| mirror::Object* default_imt = image_header.GetImageRoot(ImageHeader::kDefaultImt); |
| runtime->SetDefaultImt(down_cast<mirror::ObjectArray<mirror::ArtMethod>*>(default_imt)); |
| |
| mirror::Object* callee_save_method = image_header.GetImageRoot(ImageHeader::kCalleeSaveMethod); |
| runtime->SetCalleeSaveMethod(down_cast<mirror::ArtMethod*>(callee_save_method), |
| Runtime::kSaveAll); |
| callee_save_method = image_header.GetImageRoot(ImageHeader::kRefsOnlySaveMethod); |
| runtime->SetCalleeSaveMethod(down_cast<mirror::ArtMethod*>(callee_save_method), |
| Runtime::kRefsOnly); |
| callee_save_method = image_header.GetImageRoot(ImageHeader::kRefsAndArgsSaveMethod); |
| runtime->SetCalleeSaveMethod(down_cast<mirror::ArtMethod*>(callee_save_method), |
| Runtime::kRefsAndArgs); |
| |
| if (VLOG_IS_ON(heap) || VLOG_IS_ON(startup)) { |
| LOG(INFO) << "ImageSpace::Init exiting (" << PrettyDuration(NanoTime() - start_time) |
| << ") " << *space.get(); |
| } |
| return space.release(); |
| } |
| |
| OatFile* ImageSpace::OpenOatFile(const char* image_path, std::string* error_msg) const { |
| const ImageHeader& image_header = GetImageHeader(); |
| std::string oat_filename = ImageHeader::GetOatLocationFromImageLocation(image_path); |
| |
| OatFile* oat_file = OatFile::Open(oat_filename, oat_filename, image_header.GetOatDataBegin(), |
| !Runtime::Current()->IsCompiler(), error_msg); |
| if (oat_file == NULL) { |
| *error_msg = StringPrintf("Failed to open oat file '%s' referenced from image %s: %s", |
| oat_filename.c_str(), GetName(), error_msg->c_str()); |
| return nullptr; |
| } |
| uint32_t oat_checksum = oat_file->GetOatHeader().GetChecksum(); |
| uint32_t image_oat_checksum = image_header.GetOatChecksum(); |
| if (oat_checksum != image_oat_checksum) { |
| *error_msg = StringPrintf("Failed to match oat file checksum 0x%x to expected oat checksum 0x%x" |
| " in image %s", oat_checksum, image_oat_checksum, GetName()); |
| return nullptr; |
| } |
| int32_t image_patch_delta = image_header.GetPatchDelta(); |
| int32_t oat_patch_delta = oat_file->GetOatHeader().GetImagePatchDelta(); |
| if (oat_patch_delta != image_patch_delta) { |
| // We should have already relocated by this point. Bail out. |
| *error_msg = StringPrintf("Failed to match oat file patch delta %d to expected patch delta %d " |
| "in image %s", oat_patch_delta, image_patch_delta, GetName()); |
| return nullptr; |
| } |
| |
| return oat_file; |
| } |
| |
| bool ImageSpace::ValidateOatFile(std::string* error_msg) const { |
| CHECK(oat_file_.get() != NULL); |
| for (const OatFile::OatDexFile* oat_dex_file : oat_file_->GetOatDexFiles()) { |
| const std::string& dex_file_location = oat_dex_file->GetDexFileLocation(); |
| uint32_t dex_file_location_checksum; |
| if (!DexFile::GetChecksum(dex_file_location.c_str(), &dex_file_location_checksum, error_msg)) { |
| *error_msg = StringPrintf("Failed to get checksum of dex file '%s' referenced by image %s: " |
| "%s", dex_file_location.c_str(), GetName(), error_msg->c_str()); |
| return false; |
| } |
| if (dex_file_location_checksum != oat_dex_file->GetDexFileLocationChecksum()) { |
| *error_msg = StringPrintf("ValidateOatFile found checksum mismatch between oat file '%s' and " |
| "dex file '%s' (0x%x != 0x%x)", |
| oat_file_->GetLocation().c_str(), dex_file_location.c_str(), |
| oat_dex_file->GetDexFileLocationChecksum(), |
| dex_file_location_checksum); |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| const OatFile* ImageSpace::GetOatFile() const { |
| return oat_file_.get(); |
| } |
| |
| OatFile* ImageSpace::ReleaseOatFile() { |
| CHECK(oat_file_.get() != NULL); |
| return oat_file_.release(); |
| } |
| |
| void ImageSpace::Dump(std::ostream& os) const { |
| os << GetType() |
| << " begin=" << reinterpret_cast<void*>(Begin()) |
| << ",end=" << reinterpret_cast<void*>(End()) |
| << ",size=" << PrettySize(Size()) |
| << ",name=\"" << GetName() << "\"]"; |
| } |
| |
| } // namespace space |
| } // namespace gc |
| } // namespace art |
