dex2oat/linker/image_test.h - LeafOS-Project/android_art - Gitiles

 /*
  * 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.
  */

 #ifndef ART_DEX2OAT_LINKER_IMAGE_TEST_H_
 #define ART_DEX2OAT_LINKER_IMAGE_TEST_H_

 #include "oat/image.h"

 #include <memory>
 #include <string>
 #include <string_view>
 #include <vector>

 #include "android-base/stringprintf.h"
 #include "android-base/strings.h"

 #include "art_method-inl.h"
 #include "base/file_utils.h"
 #include "base/hash_set.h"
 #include "base/stl_util.h"
 #include "base/unix_file/fd_file.h"
 #include "base/utils.h"
 #include "class_linker-inl.h"
 #include "common_compiler_driver_test.h"
 #include "compiler_callbacks.h"
 #include "debug/method_debug_info.h"
 #include "dex/quick_compiler_callbacks.h"
 #include "dex/signature-inl.h"
 #include "driver/compiler_driver.h"
 #include "driver/compiler_options.h"
 #include "gc/space/image_space.h"
 #include "image_writer.h"
 #include "linker/elf_writer.h"
 #include "linker/elf_writer_quick.h"
 #include "linker/multi_oat_relative_patcher.h"
 #include "lock_word.h"
 #include "mirror/object-inl.h"
 #include "oat/oat.h"
 #include "oat_writer.h"
 #include "read_barrier_config.h"
 #include "scoped_thread_state_change-inl.h"
 #include "signal_catcher.h"
 #include "stream/buffered_output_stream.h"
 #include "stream/file_output_stream.h"

 namespace art {
 namespace linker {

 static const uintptr_t kRequestedImageBase = ART_BASE_ADDRESS;

 struct CompilationHelper {
   std::vector<std::string> dex_file_locations;
   std::vector<ScratchFile> image_locations;
   std::string extra_dex;
   std::vector<std::unique_ptr<const DexFile>> extra_dex_files;
   std::vector<ScratchFile> image_files;
   std::vector<ScratchFile> oat_files;
   std::vector<ScratchFile> vdex_files;
   std::string image_dir;

   std::vector<size_t> GetImageObjectSectionSizes();

   ~CompilationHelper();
 };

 class ImageTest : public CommonCompilerDriverTest {
  protected:
   void SetUp() override {
     ReserveImageSpace();
     CommonCompilerDriverTest::SetUp();
   }

   CompilerFilter::Filter GetCompilerFilter() const override {
     return compiler_filter_;
   }

   void SetCompilerFilter(CompilerFilter::Filter compiler_filter) {
     compiler_filter_ = compiler_filter;
   }

   void Compile(ImageHeader::StorageMode storage_mode,
                uint32_t max_image_block_size,
                /*out*/ CompilationHelper& out_helper,
                const std::string& extra_dex = "",
                const std::initializer_list<std::string>& image_classes = {},
                const std::initializer_list<std::string>& image_classes_failing_aot_clinit = {},
                const std::initializer_list<std::string>& image_classes_failing_resolution = {});

   void SetUpRuntimeOptions(RuntimeOptions* options) override {
     CommonCompilerDriverTest::SetUpRuntimeOptions(options);
     QuickCompilerCallbacks* new_callbacks =
         new QuickCompilerCallbacks(CompilerCallbacks::CallbackMode::kCompileBootImage);
     new_callbacks->SetVerificationResults(verification_results_.get());
     callbacks_.reset(new_callbacks);
     options->push_back(std::make_pair("compilercallbacks", callbacks_.get()));
   }

   std::unique_ptr<HashSet<std::string>> GetImageClasses() override {
     return std::make_unique<HashSet<std::string>>(image_classes_);
   }

   ArtMethod* FindCopiedMethod(ArtMethod* origin, ObjPtr<mirror::Class> klass)
       REQUIRES_SHARED(Locks::mutator_lock_) {
     PointerSize pointer_size = class_linker_->GetImagePointerSize();
     for (ArtMethod& m : klass->GetCopiedMethods(pointer_size)) {
       if (strcmp(origin->GetName(), m.GetName()) == 0 &&
           origin->GetSignature() == m.GetSignature()) {
         return &m;
       }
     }
     return nullptr;
   }

  private:
   void DoCompile(ImageHeader::StorageMode storage_mode, /*out*/ CompilationHelper& out_helper);

   HashSet<std::string> image_classes_;

   // By default we compile with "speed-profile" and an empty profile. This compiles only JNI stubs.
   CompilerFilter::Filter compiler_filter_ = CompilerFilter::kSpeedProfile;
 };

 inline CompilationHelper::~CompilationHelper() {
   for (ScratchFile& image_file : image_files) {
     image_file.Unlink();
   }
   for (ScratchFile& oat_file : oat_files) {
     oat_file.Unlink();
   }
   for (ScratchFile& vdex_file : vdex_files) {
     vdex_file.Unlink();
   }
   const int rmdir_result = rmdir(image_dir.c_str());
   CHECK_EQ(0, rmdir_result);
 }

 inline std::vector<size_t> CompilationHelper::GetImageObjectSectionSizes() {
   std::vector<size_t> ret;
   for (ScratchFile& image_file : image_files) {
     std::unique_ptr<File> file(OS::OpenFileForReading(image_file.GetFilename().c_str()));
     CHECK(file.get() != nullptr);
     ImageHeader image_header;
     CHECK_EQ(file->ReadFully(&image_header, sizeof(image_header)), true);
     CHECK(image_header.IsValid());
     ret.push_back(image_header.GetObjectsSection().Size());
   }
   return ret;
 }

 inline void ImageTest::DoCompile(ImageHeader::StorageMode storage_mode,
                                  /*out*/ CompilationHelper& out_helper) {
   CompilerDriver* driver = compiler_driver_.get();
   Runtime::Current()->AppendToBootClassPath(
       out_helper.extra_dex, out_helper.extra_dex, out_helper.extra_dex_files);
   ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
   std::vector<const DexFile*> class_path = class_linker->GetBootClassPath();

   // Enable write for dex2dex.
   for (const DexFile* dex_file : class_path) {
     out_helper.dex_file_locations.push_back(dex_file->GetLocation());
     if (dex_file->IsReadOnly()) {
       dex_file->EnableWrite();
     }
   }
   {
     // Create a generic tmp file, to be the base of the .art and .oat temporary files.
     ScratchFile location;
     std::vector<std::string> image_locations =
         gc::space::ImageSpace::ExpandMultiImageLocations(
             ArrayRef<const std::string>(out_helper.dex_file_locations),
             location.GetFilename() + ".art");
     for (size_t i = 0u; i != class_path.size(); ++i) {
       out_helper.image_locations.push_back(ScratchFile(image_locations[i]));
     }
   }
   std::vector<std::string> image_filenames;
   for (ScratchFile& file : out_helper.image_locations) {
     std::string image_filename(GetSystemImageFilename(file.GetFilename().c_str(), kRuntimeISA));
     image_filenames.push_back(image_filename);
     size_t pos = image_filename.rfind('/');
     CHECK_NE(pos, std::string::npos) << image_filename;
     if (out_helper.image_dir.empty()) {
       out_helper.image_dir = image_filename.substr(0, pos);
       int mkdir_result = mkdir(out_helper.image_dir.c_str(), 0700);
       CHECK_EQ(0, mkdir_result) << out_helper.image_dir;
     }
     out_helper.image_files.push_back(ScratchFile(OS::CreateEmptyFile(image_filename.c_str())));
   }

   std::vector<std::string> oat_filenames;
   std::vector<std::string> vdex_filenames;
   for (const std::string& image_filename : image_filenames) {
     std::string oat_filename = ReplaceFileExtension(image_filename, "oat");
     out_helper.oat_files.push_back(ScratchFile(OS::CreateEmptyFile(oat_filename.c_str())));
     oat_filenames.push_back(oat_filename);
     std::string vdex_filename = ReplaceFileExtension(image_filename, "vdex");
     out_helper.vdex_files.push_back(ScratchFile(OS::CreateEmptyFile(vdex_filename.c_str())));
     vdex_filenames.push_back(vdex_filename);
   }

   HashMap<const DexFile*, size_t> dex_file_to_oat_index_map;
   size_t image_idx = 0;
   for (const DexFile* dex_file : class_path) {
     dex_file_to_oat_index_map.insert(std::make_pair(dex_file, image_idx));
     ++image_idx;
   }
   std::unique_ptr<ImageWriter> writer(new ImageWriter(*compiler_options_,
                                                       kRequestedImageBase,
                                                       storage_mode,
                                                       oat_filenames,
                                                       dex_file_to_oat_index_map,
                                                       /*class_loader=*/ nullptr,
                                                       /*dirty_image_objects=*/ nullptr));
   {
     {
       jobject class_loader = nullptr;
       TimingLogger timings("ImageTest::WriteRead", false, false);
       CompileAll(class_loader, class_path, &timings);

       TimingLogger::ScopedTiming t("WriteElf", &timings);
       SafeMap<std::string, std::string> key_value_store;
       key_value_store.Put(OatHeader::kBootClassPathKey,
                           android::base::Join(out_helper.dex_file_locations, ':'));
       key_value_store.Put(OatHeader::kApexVersionsKey, Runtime::Current()->GetApexVersions());
       key_value_store.Put(
           OatHeader::kConcurrentCopying,
           compiler_options_->EmitReadBarrier() ? OatHeader::kTrueValue : OatHeader::kFalseValue);

       std::vector<std::unique_ptr<ElfWriter>> elf_writers;
       std::vector<std::unique_ptr<OatWriter>> oat_writers;
       for (ScratchFile& oat_file : out_helper.oat_files) {
         elf_writers.emplace_back(CreateElfWriterQuick(*compiler_options_, oat_file.GetFile()));
         elf_writers.back()->Start();
         oat_writers.emplace_back(new OatWriter(*compiler_options_,
                                                verification_results_.get(),
                                                &timings,
                                                /*profile_compilation_info*/nullptr,
                                                CompactDexLevel::kCompactDexLevelNone));
       }

       std::vector<OutputStream*> rodata;
       std::vector<MemMap> opened_dex_files_maps;
       std::vector<std::unique_ptr<const DexFile>> opened_dex_files;
       // Now that we have finalized key_value_store_, start writing the oat file.
       for (size_t i = 0, size = oat_writers.size(); i != size; ++i) {
         const DexFile* dex_file = class_path[i];
         rodata.push_back(elf_writers[i]->StartRoData());
         oat_writers[i]->AddRawDexFileSource(dex_file->GetContainer(),
                                             dex_file->Begin(),
                                             dex_file->GetLocation().c_str(),
                                             dex_file->GetLocationChecksum());

         std::vector<MemMap> cur_opened_dex_files_maps;
         std::vector<std::unique_ptr<const DexFile>> cur_opened_dex_files;
         bool dex_files_ok = oat_writers[i]->WriteAndOpenDexFiles(
             out_helper.vdex_files[i].GetFile(),
             /* verify */ false,           // Dex files may be dex-to-dex-ed, don't verify.
             /* update_input_vdex */ false,
             /* copy_dex_files */ CopyOption::kOnlyIfCompressed,
             &cur_opened_dex_files_maps,
             &cur_opened_dex_files);
         ASSERT_TRUE(dex_files_ok);

         if (!cur_opened_dex_files_maps.empty()) {
           for (MemMap& cur_map : cur_opened_dex_files_maps) {
             opened_dex_files_maps.push_back(std::move(cur_map));
           }
           for (std::unique_ptr<const DexFile>& cur_dex_file : cur_opened_dex_files) {
             // dex_file_oat_index_map_.emplace(dex_file.get(), i);
             opened_dex_files.push_back(std::move(cur_dex_file));
           }
         } else {
           ASSERT_TRUE(cur_opened_dex_files.empty());
         }
       }
       bool image_space_ok = writer->PrepareImageAddressSpace(&timings);
       ASSERT_TRUE(image_space_ok);

       DCHECK_EQ(out_helper.vdex_files.size(), out_helper.oat_files.size());
       for (size_t i = 0, size = out_helper.oat_files.size(); i != size; ++i) {
         MultiOatRelativePatcher patcher(compiler_options_->GetInstructionSet(),
                                         compiler_options_->GetInstructionSetFeatures(),
                                         driver->GetCompiledMethodStorage());
         OatWriter* const oat_writer = oat_writers[i].get();
         ElfWriter* const elf_writer = elf_writers[i].get();
         std::vector<const DexFile*> cur_dex_files(1u, class_path[i]);
         bool start_rodata_ok = oat_writer->StartRoData(cur_dex_files,
                                                        rodata[i],
                                                        (i == 0u) ? &key_value_store : nullptr);
         ASSERT_TRUE(start_rodata_ok);
         oat_writer->Initialize(driver, writer.get(), cur_dex_files);

         oat_writer->FinishVdexFile(out_helper.vdex_files[i].GetFile(), /*verifier_deps=*/ nullptr);

         oat_writer->PrepareLayout(&patcher);
         elf_writer->PrepareDynamicSection(oat_writer->GetOatHeader().GetExecutableOffset(),
                                           oat_writer->GetCodeSize(),
                                           oat_writer->GetDataBimgRelRoSize(),
                                           oat_writer->GetBssSize(),
                                           oat_writer->GetBssMethodsOffset(),
                                           oat_writer->GetBssRootsOffset(),
                                           oat_writer->GetVdexSize());

         writer->UpdateOatFileLayout(i,
                                     elf_writer->GetLoadedSize(),
                                     oat_writer->GetOatDataOffset(),
                                     oat_writer->GetOatSize());

         bool rodata_ok = oat_writer->WriteRodata(rodata[i]);
         ASSERT_TRUE(rodata_ok);
         elf_writer->EndRoData(rodata[i]);

         OutputStream* text = elf_writer->StartText();
         bool text_ok = oat_writer->WriteCode(text);
         ASSERT_TRUE(text_ok);
         elf_writer->EndText(text);

         if (oat_writer->GetDataBimgRelRoSize() != 0u) {
           OutputStream* data_bimg_rel_ro = elf_writer->StartDataBimgRelRo();
           bool data_bimg_rel_ro_ok = oat_writer->WriteDataBimgRelRo(data_bimg_rel_ro);
           ASSERT_TRUE(data_bimg_rel_ro_ok);
           elf_writer->EndDataBimgRelRo(data_bimg_rel_ro);
         }

         bool header_ok = oat_writer->WriteHeader(elf_writer->GetStream());
         ASSERT_TRUE(header_ok);

         writer->UpdateOatFileHeader(i, oat_writer->GetOatHeader());

         elf_writer->WriteDynamicSection();
         elf_writer->WriteDebugInfo(oat_writer->GetDebugInfo());

         bool success = elf_writer->End();
         ASSERT_TRUE(success);
       }
     }

     bool success_image = writer->Write(File::kInvalidFd,
                                        image_filenames,
                                        image_filenames.size());
     ASSERT_TRUE(success_image);
   }
 }

 inline void ImageTest::Compile(
     ImageHeader::StorageMode storage_mode,
     uint32_t max_image_block_size,
     CompilationHelper& helper,
     const std::string& extra_dex,
     const std::initializer_list<std::string>& image_classes,
     const std::initializer_list<std::string>& image_classes_failing_aot_clinit,
     const std::initializer_list<std::string>& image_classes_failing_resolution) {
   for (const std::string& image_class : image_classes_failing_aot_clinit) {
     ASSERT_TRUE(ContainsElement(image_classes, image_class));
   }
   for (const std::string& image_class : image_classes) {
     image_classes_.insert(image_class);
   }
   number_of_threads_ = kIsTargetBuild ? 2U : 16U;
   CreateCompilerDriver();
   // Set inline filter values.
   compiler_options_->SetInlineMaxCodeUnits(CompilerOptions::kDefaultInlineMaxCodeUnits);
   compiler_options_->SetMaxImageBlockSize(max_image_block_size);
   image_classes_.clear();
   if (!extra_dex.empty()) {
     helper.extra_dex = extra_dex;
     helper.extra_dex_files = OpenTestDexFiles(extra_dex.c_str());
   }
   DoCompile(storage_mode, helper);
   if (image_classes.begin() != image_classes.end()) {
     // Make sure all explicitly specified classes got initialized.
     ScopedObjectAccess soa(Thread::Current());
     ClassLinker* const class_linker = Runtime::Current()->GetClassLinker();
     for (const std::string& image_class : image_classes) {
       ObjPtr<mirror::Class> klass =
           class_linker->LookupClass(Thread::Current(), image_class.c_str(), nullptr);
       if (ContainsElement(image_classes_failing_resolution, image_class)) {
         EXPECT_TRUE(klass == nullptr || klass->IsErroneousUnresolved());
       } else  if (ContainsElement(image_classes_failing_aot_clinit, image_class)) {
         ASSERT_TRUE(klass != nullptr) << image_class;
         EXPECT_FALSE(klass->IsInitialized());
       } else {
         ASSERT_TRUE(klass != nullptr) << image_class;
         EXPECT_TRUE(klass->IsInitialized());
       }
     }
   }
 }

 }  // namespace linker
 }  // namespace art

 #endif  // ART_DEX2OAT_LINKER_IMAGE_TEST_H_
	/*
	* 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.
	*/

	#ifndef ART_DEX2OAT_LINKER_IMAGE_TEST_H_
	#define ART_DEX2OAT_LINKER_IMAGE_TEST_H_

	#include "oat/image.h"

	#include <memory>
	#include <string>
	#include <string_view>
	#include <vector>

	#include "android-base/stringprintf.h"
	#include "android-base/strings.h"

	#include "art_method-inl.h"
	#include "base/file_utils.h"
	#include "base/hash_set.h"
	#include "base/stl_util.h"
	#include "base/unix_file/fd_file.h"
	#include "base/utils.h"
	#include "class_linker-inl.h"
	#include "common_compiler_driver_test.h"
	#include "compiler_callbacks.h"
	#include "debug/method_debug_info.h"
	#include "dex/quick_compiler_callbacks.h"
	#include "dex/signature-inl.h"
	#include "driver/compiler_driver.h"
	#include "driver/compiler_options.h"
	#include "gc/space/image_space.h"
	#include "image_writer.h"
	#include "linker/elf_writer.h"
	#include "linker/elf_writer_quick.h"
	#include "linker/multi_oat_relative_patcher.h"
	#include "lock_word.h"
	#include "mirror/object-inl.h"
	#include "oat/oat.h"
	#include "oat_writer.h"
	#include "read_barrier_config.h"
	#include "scoped_thread_state_change-inl.h"
	#include "signal_catcher.h"
	#include "stream/buffered_output_stream.h"
	#include "stream/file_output_stream.h"

	namespace art {
	namespace linker {

	static const uintptr_t kRequestedImageBase = ART_BASE_ADDRESS;

	struct CompilationHelper {
	std::vector<std::string> dex_file_locations;
	std::vector<ScratchFile> image_locations;
	std::string extra_dex;
	std::vector<std::unique_ptr<const DexFile>> extra_dex_files;
	std::vector<ScratchFile> image_files;
	std::vector<ScratchFile> oat_files;
	std::vector<ScratchFile> vdex_files;
	std::string image_dir;

	std::vector<size_t> GetImageObjectSectionSizes();

	~CompilationHelper();
	};

	class ImageTest : public CommonCompilerDriverTest {
	protected:
	void SetUp() override {
	ReserveImageSpace();
	CommonCompilerDriverTest::SetUp();
	}

	CompilerFilter::Filter GetCompilerFilter() const override {
	return compiler_filter_;
	}

	void SetCompilerFilter(CompilerFilter::Filter compiler_filter) {
	compiler_filter_ = compiler_filter;
	}

	void Compile(ImageHeader::StorageMode storage_mode,
	uint32_t max_image_block_size,
	/out/ CompilationHelper& out_helper,
	const std::string& extra_dex = "",
	const std::initializer_list<std::string>& image_classes = {},
	const std::initializer_list<std::string>& image_classes_failing_aot_clinit = {},
	const std::initializer_list<std::string>& image_classes_failing_resolution = {});

	void SetUpRuntimeOptions(RuntimeOptions* options) override {
	CommonCompilerDriverTest::SetUpRuntimeOptions(options);
	QuickCompilerCallbacks* new_callbacks =
	new QuickCompilerCallbacks(CompilerCallbacks::CallbackMode::kCompileBootImage);
	new_callbacks->SetVerificationResults(verification_results_.get());
	callbacks_.reset(new_callbacks);
	options->push_back(std::make_pair("compilercallbacks", callbacks_.get()));
	}

	std::unique_ptr<HashSet<std::string>> GetImageClasses() override {
	return std::make_unique<HashSet<std::string>>(image_classes_);
	}

	ArtMethod* FindCopiedMethod(ArtMethod* origin, ObjPtr<mirror::Class> klass)
	REQUIRES_SHARED(Locks::mutator_lock_) {
	PointerSize pointer_size = class_linker_->GetImagePointerSize();
	for (ArtMethod& m : klass->GetCopiedMethods(pointer_size)) {
	if (strcmp(origin->GetName(), m.GetName()) == 0 &&
	origin->GetSignature() == m.GetSignature()) {
	return &m;
	}
	}
	return nullptr;
	}

	private:
	void DoCompile(ImageHeader::StorageMode storage_mode, /out/ CompilationHelper& out_helper);

	HashSet<std::string> image_classes_;

	// By default we compile with "speed-profile" and an empty profile. This compiles only JNI stubs.
	CompilerFilter::Filter compiler_filter_ = CompilerFilter::kSpeedProfile;
	};

	inline CompilationHelper::~CompilationHelper() {
	for (ScratchFile& image_file : image_files) {
	image_file.Unlink();
	}
	for (ScratchFile& oat_file : oat_files) {
	oat_file.Unlink();
	}
	for (ScratchFile& vdex_file : vdex_files) {
	vdex_file.Unlink();
	}
	const int rmdir_result = rmdir(image_dir.c_str());
	CHECK_EQ(0, rmdir_result);
	}

	inline std::vector<size_t> CompilationHelper::GetImageObjectSectionSizes() {
	std::vector<size_t> ret;
	for (ScratchFile& image_file : image_files) {
	std::unique_ptr<File> file(OS::OpenFileForReading(image_file.GetFilename().c_str()));
	CHECK(file.get() != nullptr);
	ImageHeader image_header;
	CHECK_EQ(file->ReadFully(&image_header, sizeof(image_header)), true);
	CHECK(image_header.IsValid());
	ret.push_back(image_header.GetObjectsSection().Size());
	}
	return ret;
	}

	inline void ImageTest::DoCompile(ImageHeader::StorageMode storage_mode,
	/out/ CompilationHelper& out_helper) {
	CompilerDriver* driver = compiler_driver_.get();
	Runtime::Current()->AppendToBootClassPath(
	out_helper.extra_dex, out_helper.extra_dex, out_helper.extra_dex_files);
	ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
	std::vector<const DexFile*> class_path = class_linker->GetBootClassPath();

	// Enable write for dex2dex.
	for (const DexFile* dex_file : class_path) {
	out_helper.dex_file_locations.push_back(dex_file->GetLocation());
	if (dex_file->IsReadOnly()) {
	dex_file->EnableWrite();
	}
	}
	{
	// Create a generic tmp file, to be the base of the .art and .oat temporary files.
	ScratchFile location;
	std::vector<std::string> image_locations =
	gc::space::ImageSpace::ExpandMultiImageLocations(
	ArrayRef<const std::string>(out_helper.dex_file_locations),
	location.GetFilename() + ".art");
	for (size_t i = 0u; i != class_path.size(); ++i) {
	out_helper.image_locations.push_back(ScratchFile(image_locations[i]));
	}
	}
	std::vector<std::string> image_filenames;
	for (ScratchFile& file : out_helper.image_locations) {
	std::string image_filename(GetSystemImageFilename(file.GetFilename().c_str(), kRuntimeISA));
	image_filenames.push_back(image_filename);
	size_t pos = image_filename.rfind('/');
	CHECK_NE(pos, std::string::npos) << image_filename;
	if (out_helper.image_dir.empty()) {
	out_helper.image_dir = image_filename.substr(0, pos);
	int mkdir_result = mkdir(out_helper.image_dir.c_str(), 0700);
	CHECK_EQ(0, mkdir_result) << out_helper.image_dir;
	}
	out_helper.image_files.push_back(ScratchFile(OS::CreateEmptyFile(image_filename.c_str())));
	}

	std::vector<std::string> oat_filenames;
	std::vector<std::string> vdex_filenames;
	for (const std::string& image_filename : image_filenames) {
	std::string oat_filename = ReplaceFileExtension(image_filename, "oat");
	out_helper.oat_files.push_back(ScratchFile(OS::CreateEmptyFile(oat_filename.c_str())));
	oat_filenames.push_back(oat_filename);
	std::string vdex_filename = ReplaceFileExtension(image_filename, "vdex");
	out_helper.vdex_files.push_back(ScratchFile(OS::CreateEmptyFile(vdex_filename.c_str())));
	vdex_filenames.push_back(vdex_filename);
	}

	HashMap<const DexFile*, size_t> dex_file_to_oat_index_map;
	size_t image_idx = 0;
	for (const DexFile* dex_file : class_path) {
	dex_file_to_oat_index_map.insert(std::make_pair(dex_file, image_idx));
	++image_idx;
	}
	std::unique_ptr<ImageWriter> writer(new ImageWriter(*compiler_options_,
	kRequestedImageBase,
	storage_mode,
	oat_filenames,
	dex_file_to_oat_index_map,
	/class_loader=/ nullptr,
	/dirty_image_objects=/ nullptr));
	{
	{
	jobject class_loader = nullptr;
	TimingLogger timings("ImageTest::WriteRead", false, false);
	CompileAll(class_loader, class_path, &timings);

	TimingLogger::ScopedTiming t("WriteElf", &timings);
	SafeMap<std::string, std::string> key_value_store;
	key_value_store.Put(OatHeader::kBootClassPathKey,
	android::base::Join(out_helper.dex_file_locations, ':'));
	key_value_store.Put(OatHeader::kApexVersionsKey, Runtime::Current()->GetApexVersions());
	key_value_store.Put(
	OatHeader::kConcurrentCopying,
	compiler_options_->EmitReadBarrier() ? OatHeader::kTrueValue : OatHeader::kFalseValue);

	std::vector<std::unique_ptr<ElfWriter>> elf_writers;
	std::vector<std::unique_ptr<OatWriter>> oat_writers;
	for (ScratchFile& oat_file : out_helper.oat_files) {
	elf_writers.emplace_back(CreateElfWriterQuick(*compiler_options_, oat_file.GetFile()));
	elf_writers.back()->Start();
	oat_writers.emplace_back(new OatWriter(*compiler_options_,
	verification_results_.get(),
	&timings,
	/profile_compilation_info/nullptr,
	CompactDexLevel::kCompactDexLevelNone));
	}

	std::vector<OutputStream*> rodata;
	std::vector<MemMap> opened_dex_files_maps;
	std::vector<std::unique_ptr<const DexFile>> opened_dex_files;
	// Now that we have finalized key_value_store_, start writing the oat file.
	for (size_t i = 0, size = oat_writers.size(); i != size; ++i) {
	const DexFile* dex_file = class_path[i];
	rodata.push_back(elf_writers[i]->StartRoData());
	oat_writers[i]->AddRawDexFileSource(dex_file->GetContainer(),
	dex_file->Begin(),
	dex_file->GetLocation().c_str(),
	dex_file->GetLocationChecksum());

	std::vector<MemMap> cur_opened_dex_files_maps;
	std::vector<std::unique_ptr<const DexFile>> cur_opened_dex_files;
	bool dex_files_ok = oat_writers[i]->WriteAndOpenDexFiles(
	out_helper.vdex_files[i].GetFile(),
	/* verify */ false, // Dex files may be dex-to-dex-ed, don't verify.
	/* update_input_vdex */ false,
	/* copy_dex_files */ CopyOption::kOnlyIfCompressed,
	&cur_opened_dex_files_maps,
	&cur_opened_dex_files);
	ASSERT_TRUE(dex_files_ok);

	if (!cur_opened_dex_files_maps.empty()) {
	for (MemMap& cur_map : cur_opened_dex_files_maps) {
	opened_dex_files_maps.push_back(std::move(cur_map));
	}
	for (std::unique_ptr<const DexFile>& cur_dex_file : cur_opened_dex_files) {
	// dex_file_oat_index_map_.emplace(dex_file.get(), i);
	opened_dex_files.push_back(std::move(cur_dex_file));
	}
	} else {
	ASSERT_TRUE(cur_opened_dex_files.empty());
	}
	}
	bool image_space_ok = writer->PrepareImageAddressSpace(&timings);
	ASSERT_TRUE(image_space_ok);

	DCHECK_EQ(out_helper.vdex_files.size(), out_helper.oat_files.size());
	for (size_t i = 0, size = out_helper.oat_files.size(); i != size; ++i) {
	MultiOatRelativePatcher patcher(compiler_options_->GetInstructionSet(),
	compiler_options_->GetInstructionSetFeatures(),
	driver->GetCompiledMethodStorage());
	OatWriter* const oat_writer = oat_writers[i].get();
	ElfWriter* const elf_writer = elf_writers[i].get();
	std::vector<const DexFile*> cur_dex_files(1u, class_path[i]);
	bool start_rodata_ok = oat_writer->StartRoData(cur_dex_files,
	rodata[i],
	(i == 0u) ? &key_value_store : nullptr);
	ASSERT_TRUE(start_rodata_ok);
	oat_writer->Initialize(driver, writer.get(), cur_dex_files);

	oat_writer->FinishVdexFile(out_helper.vdex_files[i].GetFile(), /verifier_deps=/ nullptr);

	oat_writer->PrepareLayout(&patcher);
	elf_writer->PrepareDynamicSection(oat_writer->GetOatHeader().GetExecutableOffset(),
	oat_writer->GetCodeSize(),
	oat_writer->GetDataBimgRelRoSize(),
	oat_writer->GetBssSize(),
	oat_writer->GetBssMethodsOffset(),
	oat_writer->GetBssRootsOffset(),
	oat_writer->GetVdexSize());

	writer->UpdateOatFileLayout(i,
	elf_writer->GetLoadedSize(),
	oat_writer->GetOatDataOffset(),
	oat_writer->GetOatSize());

	bool rodata_ok = oat_writer->WriteRodata(rodata[i]);
	ASSERT_TRUE(rodata_ok);
	elf_writer->EndRoData(rodata[i]);

	OutputStream* text = elf_writer->StartText();
	bool text_ok = oat_writer->WriteCode(text);
	ASSERT_TRUE(text_ok);
	elf_writer->EndText(text);

	if (oat_writer->GetDataBimgRelRoSize() != 0u) {
	OutputStream* data_bimg_rel_ro = elf_writer->StartDataBimgRelRo();
	bool data_bimg_rel_ro_ok = oat_writer->WriteDataBimgRelRo(data_bimg_rel_ro);
	ASSERT_TRUE(data_bimg_rel_ro_ok);
	elf_writer->EndDataBimgRelRo(data_bimg_rel_ro);
	}

	bool header_ok = oat_writer->WriteHeader(elf_writer->GetStream());
	ASSERT_TRUE(header_ok);

	writer->UpdateOatFileHeader(i, oat_writer->GetOatHeader());

	elf_writer->WriteDynamicSection();
	elf_writer->WriteDebugInfo(oat_writer->GetDebugInfo());

	bool success = elf_writer->End();
	ASSERT_TRUE(success);
	}
	}

	bool success_image = writer->Write(File::kInvalidFd,
	image_filenames,
	image_filenames.size());
	ASSERT_TRUE(success_image);
	}
	}

	inline void ImageTest::Compile(
	ImageHeader::StorageMode storage_mode,
	uint32_t max_image_block_size,
	CompilationHelper& helper,
	const std::string& extra_dex,
	const std::initializer_list<std::string>& image_classes,
	const std::initializer_list<std::string>& image_classes_failing_aot_clinit,
	const std::initializer_list<std::string>& image_classes_failing_resolution) {
	for (const std::string& image_class : image_classes_failing_aot_clinit) {
	ASSERT_TRUE(ContainsElement(image_classes, image_class));
	}
	for (const std::string& image_class : image_classes) {
	image_classes_.insert(image_class);
	}
	number_of_threads_ = kIsTargetBuild ? 2U : 16U;
	CreateCompilerDriver();
	// Set inline filter values.
	compiler_options_->SetInlineMaxCodeUnits(CompilerOptions::kDefaultInlineMaxCodeUnits);
	compiler_options_->SetMaxImageBlockSize(max_image_block_size);
	image_classes_.clear();
	if (!extra_dex.empty()) {
	helper.extra_dex = extra_dex;
	helper.extra_dex_files = OpenTestDexFiles(extra_dex.c_str());
	}
	DoCompile(storage_mode, helper);
	if (image_classes.begin() != image_classes.end()) {
	// Make sure all explicitly specified classes got initialized.
	ScopedObjectAccess soa(Thread::Current());
	ClassLinker* const class_linker = Runtime::Current()->GetClassLinker();
	for (const std::string& image_class : image_classes) {
	ObjPtr<mirror::Class> klass =
	class_linker->LookupClass(Thread::Current(), image_class.c_str(), nullptr);
	if (ContainsElement(image_classes_failing_resolution, image_class)) {
	EXPECT_TRUE(klass == nullptr \|\| klass->IsErroneousUnresolved());
	} else if (ContainsElement(image_classes_failing_aot_clinit, image_class)) {
	ASSERT_TRUE(klass != nullptr) << image_class;
	EXPECT_FALSE(klass->IsInitialized());
	} else {
	ASSERT_TRUE(klass != nullptr) << image_class;
	EXPECT_TRUE(klass->IsInitialized());
	}
	}
	}
	}

	} // namespace linker
	} // namespace art

	#endif // ART_DEX2OAT_LINKER_IMAGE_TEST_H_