dexoptanalyzer/dexoptanalyzer.cc - LeafOS-Project/android_art - Gitiles

 /*
  * Copyright (C) 2017 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 <string>

 #include "base/logging.h"  // For InitLogging.
 #include "base/mutex.h"
 #include "base/os.h"
 #include "base/utils.h"
 #include "android-base/stringprintf.h"
 #include "android-base/strings.h"
 #include "base/file_utils.h"
 #include "compiler_filter.h"
 #include "class_loader_context.h"
 #include "dex/dex_file.h"
 #include "noop_compiler_callbacks.h"
 #include "oat_file_assistant.h"
 #include "runtime.h"
 #include "thread-inl.h"

 namespace art {

 // See OatFileAssistant docs for the meaning of the valid return codes.
 enum ReturnCodes {
   kNoDexOptNeeded = 0,
   kDex2OatFromScratch = 1,
   kDex2OatForBootImageOat = 2,
   kDex2OatForFilterOat = 3,
   kDex2OatForRelocationOat = 4,
   kDex2OatForBootImageOdex = 5,
   kDex2OatForFilterOdex = 6,
   kDex2OatForRelocationOdex = 7,

   kErrorInvalidArguments = 101,
   kErrorCannotCreateRuntime = 102,
   kErrorUnknownDexOptNeeded = 103
 };

 static int original_argc;
 static char** original_argv;

 static std::string CommandLine() {
   std::vector<std::string> command;
   for (int i = 0; i < original_argc; ++i) {
     command.push_back(original_argv[i]);
   }
   return android::base::Join(command, ' ');
 }

 static void UsageErrorV(const char* fmt, va_list ap) {
   std::string error;
   android::base::StringAppendV(&error, fmt, ap);
   LOG(ERROR) << error;
 }

 static void UsageError(const char* fmt, ...) {
   va_list ap;
   va_start(ap, fmt);
   UsageErrorV(fmt, ap);
   va_end(ap);
 }

 NO_RETURN static void Usage(const char *fmt, ...) {
   va_list ap;
   va_start(ap, fmt);
   UsageErrorV(fmt, ap);
   va_end(ap);

   UsageError("Command: %s", CommandLine().c_str());
   UsageError("  Performs a dexopt analysis on the given dex file and returns whether or not");
   UsageError("  the dex file needs to be dexopted.");
   UsageError("Usage: dexoptanalyzer [options]...");
   UsageError("");
   UsageError("  --dex-file=<filename>: the dex file which should be analyzed.");
   UsageError("");
   UsageError("  --isa=<string>: the instruction set for which the analysis should be performed.");
   UsageError("");
   UsageError("  --compiler-filter=<string>: the target compiler filter to be used as reference");
   UsageError("       when deciding if the dex file needs to be optimized.");
   UsageError("");
   UsageError("  --assume-profile-changed: assumes the profile information has changed");
   UsageError("       when deciding if the dex file needs to be optimized.");
   UsageError("");
   UsageError("  --image=<filename>: optional, the image to be used to decide if the associated");
   UsageError("       oat file is up to date. Defaults to $ANDROID_ROOT/framework/boot.art.");
   UsageError("       Example: --image=/system/framework/boot.art");
   UsageError("");
   UsageError("  --android-data=<directory>: optional, the directory which should be used as");
   UsageError("       android-data. By default ANDROID_DATA env variable is used.");
   UsageError("");
   UsageError("  --oat-fd=number: file descriptor of the oat file which should be analyzed");
   UsageError("");
   UsageError("  --vdex-fd=number: file descriptor of the vdex file corresponding to the oat file");
   UsageError("");
   UsageError("  --zip-fd=number: specifies a file descriptor corresponding to the dex file.");
   UsageError("");
   UsageError("  --downgrade: optional, if the purpose of dexopt is to downgrade the dex file");
   UsageError("       By default, dexopt considers upgrade case.");
   UsageError("");
   UsageError("Return code:");
   UsageError("  To make it easier to integrate with the internal tools this command will make");
   UsageError("    available its result (dexoptNeeded) as the exit/return code. i.e. it will not");
   UsageError("    return 0 for success and a non zero values for errors as the conventional");
   UsageError("    commands. The following return codes are possible:");
   UsageError("        kNoDexOptNeeded = 0");
   UsageError("        kDex2OatFromScratch = 1");
   UsageError("        kDex2OatForBootImageOat = 2");
   UsageError("        kDex2OatForFilterOat = 3");
   UsageError("        kDex2OatForRelocationOat = 4");
   UsageError("        kDex2OatForBootImageOdex = 5");
   UsageError("        kDex2OatForFilterOdex = 6");
   UsageError("        kDex2OatForRelocationOdex = 7");

   UsageError("        kErrorInvalidArguments = 101");
   UsageError("        kErrorCannotCreateRuntime = 102");
   UsageError("        kErrorUnknownDexOptNeeded = 103");
   UsageError("");

   exit(kErrorInvalidArguments);
 }

 class DexoptAnalyzer final {
  public:
   DexoptAnalyzer() :
       assume_profile_changed_(false),
       downgrade_(false) {}

   void ParseArgs(int argc, char **argv) {
     original_argc = argc;
     original_argv = argv;

     Locks::Init();
     InitLogging(argv, Runtime::Abort);
     // Skip over the command name.
     argv++;
     argc--;

     if (argc == 0) {
       Usage("No arguments specified");
     }

     for (int i = 0; i < argc; ++i) {
       const StringPiece option(argv[i]);
       if (option == "--assume-profile-changed") {
         assume_profile_changed_ = true;
       } else if (option.starts_with("--dex-file=")) {
         dex_file_ = option.substr(strlen("--dex-file=")).ToString();
       } else if (option.starts_with("--compiler-filter=")) {
         std::string filter_str = option.substr(strlen("--compiler-filter=")).ToString();
         if (!CompilerFilter::ParseCompilerFilter(filter_str.c_str(), &compiler_filter_)) {
           Usage("Invalid compiler filter '%s'", option.data());
         }
       } else if (option.starts_with("--isa=")) {
         std::string isa_str = option.substr(strlen("--isa=")).ToString();
         isa_ = GetInstructionSetFromString(isa_str.c_str());
         if (isa_ == InstructionSet::kNone) {
           Usage("Invalid isa '%s'", option.data());
         }
       } else if (option.starts_with("--image=")) {
         image_ = option.substr(strlen("--image=")).ToString();
       } else if (option.starts_with("--android-data=")) {
         // Overwrite android-data if needed (oat file assistant relies on a valid directory to
         // compute dalvik-cache folder). This is mostly used in tests.
         std::string new_android_data = option.substr(strlen("--android-data=")).ToString();
         setenv("ANDROID_DATA", new_android_data.c_str(), 1);
       } else if (option.starts_with("--downgrade")) {
         downgrade_ = true;
       } else if (option.starts_with("--oat-fd")) {
         oat_fd_ = std::stoi(option.substr(strlen("--oat-fd=")).ToString(), nullptr, 0);
         if (oat_fd_ < 0) {
           Usage("Invalid --oat-fd %d", oat_fd_);
         }
       } else if (option.starts_with("--vdex-fd")) {
         vdex_fd_ = std::stoi(option.substr(strlen("--vdex-fd=")).ToString(), nullptr, 0);
         if (vdex_fd_ < 0) {
           Usage("Invalid --vdex-fd %d", vdex_fd_);
         }
       } else if (option.starts_with("--zip-fd")) {
           zip_fd_ = std::stoi(option.substr(strlen("--zip-fd=")).ToString(), nullptr, 0);
           if (zip_fd_ < 0) {
             Usage("Invalid --zip-fd %d", zip_fd_);
           }
       } else if (option.starts_with("--class-loader-context=")) {
         std::string context_str = option.substr(strlen("--class-loader-context=")).ToString();
         class_loader_context_ = ClassLoaderContext::Create(context_str);
         if (class_loader_context_ == nullptr) {
           Usage("Invalid --class-loader-context '%s'", context_str.c_str());
         }
       } else {
         Usage("Unknown argument '%s'", option.data());
       }
     }

     if (image_.empty()) {
       // If we don't receive the image, try to use the default one.
       // Tests may specify a different image (e.g. core image).
       std::string error_msg;
       image_ = GetDefaultBootImageLocation(&error_msg);

       if (image_.empty()) {
         LOG(ERROR) << error_msg;
         Usage("--image unspecified and ANDROID_ROOT not set or image file does not exist.");
       }
     }
   }

   bool CreateRuntime() {
     RuntimeOptions options;
     // The image could be custom, so make sure we explicitly pass it.
     std::string img = "-Ximage:" + image_;
     options.push_back(std::make_pair(img.c_str(), nullptr));
     // The instruction set of the image should match the instruction set we will test.
     const void* isa_opt = reinterpret_cast<const void*>(GetInstructionSetString(isa_));
     options.push_back(std::make_pair("imageinstructionset", isa_opt));
      // Disable libsigchain. We don't don't need it to evaluate DexOptNeeded status.
     options.push_back(std::make_pair("-Xno-sig-chain", nullptr));
     // Pretend we are a compiler so that we can re-use the same infrastructure to load a different
     // ISA image and minimize the amount of things that get started.
     NoopCompilerCallbacks callbacks;
     options.push_back(std::make_pair("compilercallbacks", &callbacks));
     // Make sure we don't attempt to relocate. The tool should only retrieve the DexOptNeeded
     // status and not attempt to relocate the boot image.
     options.push_back(std::make_pair("-Xnorelocate", nullptr));

     if (!Runtime::Create(options, false)) {
       LOG(ERROR) << "Unable to initialize runtime";
       return false;
     }
     // Runtime::Create acquired the mutator_lock_ that is normally given away when we
     // Runtime::Start. Give it away now.
     Thread::Current()->TransitionFromRunnableToSuspended(kNative);

     return true;
   }

   int GetDexOptNeeded() {
     if (!CreateRuntime()) {
       return kErrorCannotCreateRuntime;
     }
     std::unique_ptr<Runtime> runtime(Runtime::Current());

     std::unique_ptr<OatFileAssistant> oat_file_assistant;
     oat_file_assistant = std::make_unique<OatFileAssistant>(dex_file_.c_str(),
                                                             isa_,
                                                             false /*load_executable*/,
                                                             false /*only_load_system_executable*/,
                                                             vdex_fd_,
                                                             oat_fd_,
                                                             zip_fd_);
     // Always treat elements of the bootclasspath as up-to-date.
     // TODO(calin): this check should be in OatFileAssistant.
     if (oat_file_assistant->IsInBootClassPath()) {
       return kNoDexOptNeeded;
     }

     int dexoptNeeded = oat_file_assistant->GetDexOptNeeded(
         compiler_filter_, assume_profile_changed_, downgrade_, class_loader_context_.get());

     // Convert OatFileAssitant codes to dexoptanalyzer codes.
     switch (dexoptNeeded) {
       case OatFileAssistant::kNoDexOptNeeded: return kNoDexOptNeeded;
       case OatFileAssistant::kDex2OatFromScratch: return kDex2OatFromScratch;
       case OatFileAssistant::kDex2OatForBootImage: return kDex2OatForBootImageOat;
       case OatFileAssistant::kDex2OatForFilter: return kDex2OatForFilterOat;
       case OatFileAssistant::kDex2OatForRelocation: return kDex2OatForRelocationOat;

       case -OatFileAssistant::kDex2OatForBootImage: return kDex2OatForBootImageOdex;
       case -OatFileAssistant::kDex2OatForFilter: return kDex2OatForFilterOdex;
       case -OatFileAssistant::kDex2OatForRelocation: return kDex2OatForRelocationOdex;
       default:
         LOG(ERROR) << "Unknown dexoptNeeded " << dexoptNeeded;
         return kErrorUnknownDexOptNeeded;
     }
   }

  private:
   std::string dex_file_;
   InstructionSet isa_;
   CompilerFilter::Filter compiler_filter_;
   std::unique_ptr<ClassLoaderContext> class_loader_context_;
   bool assume_profile_changed_;
   bool downgrade_;
   std::string image_;
   int oat_fd_ = -1;
   int vdex_fd_ = -1;
   // File descriptor corresponding to apk, dex_file, or zip.
   int zip_fd_ = -1;
 };

 static int dexoptAnalyze(int argc, char** argv) {
   DexoptAnalyzer analyzer;

   // Parse arguments. Argument mistakes will lead to exit(kErrorInvalidArguments) in UsageError.
   analyzer.ParseArgs(argc, argv);
   return analyzer.GetDexOptNeeded();
 }

 }  // namespace art

 int main(int argc, char **argv) {
   return art::dexoptAnalyze(argc, argv);
 }
	/*
	* Copyright (C) 2017 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 <string>

	#include "base/logging.h" // For InitLogging.
	#include "base/mutex.h"
	#include "base/os.h"
	#include "base/utils.h"
	#include "android-base/stringprintf.h"
	#include "android-base/strings.h"
	#include "base/file_utils.h"
	#include "compiler_filter.h"
	#include "class_loader_context.h"
	#include "dex/dex_file.h"
	#include "noop_compiler_callbacks.h"
	#include "oat_file_assistant.h"
	#include "runtime.h"
	#include "thread-inl.h"

	namespace art {

	// See OatFileAssistant docs for the meaning of the valid return codes.
	enum ReturnCodes {
	kNoDexOptNeeded = 0,
	kDex2OatFromScratch = 1,
	kDex2OatForBootImageOat = 2,
	kDex2OatForFilterOat = 3,
	kDex2OatForRelocationOat = 4,
	kDex2OatForBootImageOdex = 5,
	kDex2OatForFilterOdex = 6,
	kDex2OatForRelocationOdex = 7,

	kErrorInvalidArguments = 101,
	kErrorCannotCreateRuntime = 102,
	kErrorUnknownDexOptNeeded = 103
	};

	static int original_argc;
	static char** original_argv;

	static std::string CommandLine() {
	std::vector<std::string> command;
	for (int i = 0; i < original_argc; ++i) {
	command.push_back(original_argv[i]);
	}
	return android::base::Join(command, ' ');
	}

	static void UsageErrorV(const char* fmt, va_list ap) {
	std::string error;
	android::base::StringAppendV(&error, fmt, ap);
	LOG(ERROR) << error;
	}

	static void UsageError(const char* fmt, ...) {
	va_list ap;
	va_start(ap, fmt);
	UsageErrorV(fmt, ap);
	va_end(ap);
	}

	NO_RETURN static void Usage(const char *fmt, ...) {
	va_list ap;
	va_start(ap, fmt);
	UsageErrorV(fmt, ap);
	va_end(ap);

	UsageError("Command: %s", CommandLine().c_str());
	UsageError(" Performs a dexopt analysis on the given dex file and returns whether or not");
	UsageError(" the dex file needs to be dexopted.");
	UsageError("Usage: dexoptanalyzer [options]...");
	UsageError("");
	UsageError(" --dex-file=<filename>: the dex file which should be analyzed.");
	UsageError("");
	UsageError(" --isa=<string>: the instruction set for which the analysis should be performed.");
	UsageError("");
	UsageError(" --compiler-filter=<string>: the target compiler filter to be used as reference");
	UsageError(" when deciding if the dex file needs to be optimized.");
	UsageError("");
	UsageError(" --assume-profile-changed: assumes the profile information has changed");
	UsageError(" when deciding if the dex file needs to be optimized.");
	UsageError("");
	UsageError(" --image=<filename>: optional, the image to be used to decide if the associated");
	UsageError(" oat file is up to date. Defaults to $ANDROID_ROOT/framework/boot.art.");
	UsageError(" Example: --image=/system/framework/boot.art");
	UsageError("");
	UsageError(" --android-data=<directory>: optional, the directory which should be used as");
	UsageError(" android-data. By default ANDROID_DATA env variable is used.");
	UsageError("");
	UsageError(" --oat-fd=number: file descriptor of the oat file which should be analyzed");
	UsageError("");
	UsageError(" --vdex-fd=number: file descriptor of the vdex file corresponding to the oat file");
	UsageError("");
	UsageError(" --zip-fd=number: specifies a file descriptor corresponding to the dex file.");
	UsageError("");
	UsageError(" --downgrade: optional, if the purpose of dexopt is to downgrade the dex file");
	UsageError(" By default, dexopt considers upgrade case.");
	UsageError("");
	UsageError("Return code:");
	UsageError(" To make it easier to integrate with the internal tools this command will make");
	UsageError(" available its result (dexoptNeeded) as the exit/return code. i.e. it will not");
	UsageError(" return 0 for success and a non zero values for errors as the conventional");
	UsageError(" commands. The following return codes are possible:");
	UsageError(" kNoDexOptNeeded = 0");
	UsageError(" kDex2OatFromScratch = 1");
	UsageError(" kDex2OatForBootImageOat = 2");
	UsageError(" kDex2OatForFilterOat = 3");
	UsageError(" kDex2OatForRelocationOat = 4");
	UsageError(" kDex2OatForBootImageOdex = 5");
	UsageError(" kDex2OatForFilterOdex = 6");
	UsageError(" kDex2OatForRelocationOdex = 7");

	UsageError(" kErrorInvalidArguments = 101");
	UsageError(" kErrorCannotCreateRuntime = 102");
	UsageError(" kErrorUnknownDexOptNeeded = 103");
	UsageError("");

	exit(kErrorInvalidArguments);
	}

	class DexoptAnalyzer final {
	public:
	DexoptAnalyzer() :
	assume_profile_changed_(false),
	downgrade_(false) {}

	void ParseArgs(int argc, char **argv) {
	original_argc = argc;
	original_argv = argv;

	Locks::Init();
	InitLogging(argv, Runtime::Abort);
	// Skip over the command name.
	argv++;
	argc--;

	if (argc == 0) {
	Usage("No arguments specified");
	}

	for (int i = 0; i < argc; ++i) {
	const StringPiece option(argv[i]);
	if (option == "--assume-profile-changed") {
	assume_profile_changed_ = true;
	} else if (option.starts_with("--dex-file=")) {
	dex_file_ = option.substr(strlen("--dex-file=")).ToString();
	} else if (option.starts_with("--compiler-filter=")) {
	std::string filter_str = option.substr(strlen("--compiler-filter=")).ToString();
	if (!CompilerFilter::ParseCompilerFilter(filter_str.c_str(), &compiler_filter_)) {
	Usage("Invalid compiler filter '%s'", option.data());
	}
	} else if (option.starts_with("--isa=")) {
	std::string isa_str = option.substr(strlen("--isa=")).ToString();
	isa_ = GetInstructionSetFromString(isa_str.c_str());
	if (isa_ == InstructionSet::kNone) {
	Usage("Invalid isa '%s'", option.data());
	}
	} else if (option.starts_with("--image=")) {
	image_ = option.substr(strlen("--image=")).ToString();
	} else if (option.starts_with("--android-data=")) {
	// Overwrite android-data if needed (oat file assistant relies on a valid directory to
	// compute dalvik-cache folder). This is mostly used in tests.
	std::string new_android_data = option.substr(strlen("--android-data=")).ToString();
	setenv("ANDROID_DATA", new_android_data.c_str(), 1);
	} else if (option.starts_with("--downgrade")) {
	downgrade_ = true;
	} else if (option.starts_with("--oat-fd")) {
	oat_fd_ = std::stoi(option.substr(strlen("--oat-fd=")).ToString(), nullptr, 0);
	if (oat_fd_ < 0) {
	Usage("Invalid --oat-fd %d", oat_fd_);
	}
	} else if (option.starts_with("--vdex-fd")) {
	vdex_fd_ = std::stoi(option.substr(strlen("--vdex-fd=")).ToString(), nullptr, 0);
	if (vdex_fd_ < 0) {
	Usage("Invalid --vdex-fd %d", vdex_fd_);
	}
	} else if (option.starts_with("--zip-fd")) {
	zip_fd_ = std::stoi(option.substr(strlen("--zip-fd=")).ToString(), nullptr, 0);
	if (zip_fd_ < 0) {
	Usage("Invalid --zip-fd %d", zip_fd_);
	}
	} else if (option.starts_with("--class-loader-context=")) {
	std::string context_str = option.substr(strlen("--class-loader-context=")).ToString();
	class_loader_context_ = ClassLoaderContext::Create(context_str);
	if (class_loader_context_ == nullptr) {
	Usage("Invalid --class-loader-context '%s'", context_str.c_str());
	}
	} else {
	Usage("Unknown argument '%s'", option.data());
	}
	}

	if (image_.empty()) {
	// If we don't receive the image, try to use the default one.
	// Tests may specify a different image (e.g. core image).
	std::string error_msg;
	image_ = GetDefaultBootImageLocation(&error_msg);

	if (image_.empty()) {
	LOG(ERROR) << error_msg;
	Usage("--image unspecified and ANDROID_ROOT not set or image file does not exist.");
	}
	}
	}

	bool CreateRuntime() {
	RuntimeOptions options;
	// The image could be custom, so make sure we explicitly pass it.
	std::string img = "-Ximage:" + image_;
	options.push_back(std::make_pair(img.c_str(), nullptr));
	// The instruction set of the image should match the instruction set we will test.
	const void* isa_opt = reinterpret_cast<const void*>(GetInstructionSetString(isa_));
	options.push_back(std::make_pair("imageinstructionset", isa_opt));
	// Disable libsigchain. We don't don't need it to evaluate DexOptNeeded status.
	options.push_back(std::make_pair("-Xno-sig-chain", nullptr));
	// Pretend we are a compiler so that we can re-use the same infrastructure to load a different
	// ISA image and minimize the amount of things that get started.
	NoopCompilerCallbacks callbacks;
	options.push_back(std::make_pair("compilercallbacks", &callbacks));
	// Make sure we don't attempt to relocate. The tool should only retrieve the DexOptNeeded
	// status and not attempt to relocate the boot image.
	options.push_back(std::make_pair("-Xnorelocate", nullptr));

	if (!Runtime::Create(options, false)) {
	LOG(ERROR) << "Unable to initialize runtime";
	return false;
	}
	// Runtime::Create acquired the mutator_lock_ that is normally given away when we
	// Runtime::Start. Give it away now.
	Thread::Current()->TransitionFromRunnableToSuspended(kNative);

	return true;
	}

	int GetDexOptNeeded() {
	if (!CreateRuntime()) {
	return kErrorCannotCreateRuntime;
	}
	std::unique_ptr<Runtime> runtime(Runtime::Current());

	std::unique_ptr<OatFileAssistant> oat_file_assistant;
	oat_file_assistant = std::make_unique<OatFileAssistant>(dex_file_.c_str(),
	isa_,
	false /load_executable/,
	false /only_load_system_executable/,
	vdex_fd_,
	oat_fd_,
	zip_fd_);
	// Always treat elements of the bootclasspath as up-to-date.
	// TODO(calin): this check should be in OatFileAssistant.
	if (oat_file_assistant->IsInBootClassPath()) {
	return kNoDexOptNeeded;
	}

	int dexoptNeeded = oat_file_assistant->GetDexOptNeeded(
	compiler_filter_, assume_profile_changed_, downgrade_, class_loader_context_.get());

	// Convert OatFileAssitant codes to dexoptanalyzer codes.
	switch (dexoptNeeded) {
	case OatFileAssistant::kNoDexOptNeeded: return kNoDexOptNeeded;
	case OatFileAssistant::kDex2OatFromScratch: return kDex2OatFromScratch;
	case OatFileAssistant::kDex2OatForBootImage: return kDex2OatForBootImageOat;
	case OatFileAssistant::kDex2OatForFilter: return kDex2OatForFilterOat;
	case OatFileAssistant::kDex2OatForRelocation: return kDex2OatForRelocationOat;

	case -OatFileAssistant::kDex2OatForBootImage: return kDex2OatForBootImageOdex;
	case -OatFileAssistant::kDex2OatForFilter: return kDex2OatForFilterOdex;
	case -OatFileAssistant::kDex2OatForRelocation: return kDex2OatForRelocationOdex;
	default:
	LOG(ERROR) << "Unknown dexoptNeeded " << dexoptNeeded;
	return kErrorUnknownDexOptNeeded;
	}
	}

	private:
	std::string dex_file_;
	InstructionSet isa_;
	CompilerFilter::Filter compiler_filter_;
	std::unique_ptr<ClassLoaderContext> class_loader_context_;
	bool assume_profile_changed_;
	bool downgrade_;
	std::string image_;
	int oat_fd_ = -1;
	int vdex_fd_ = -1;
	// File descriptor corresponding to apk, dex_file, or zip.
	int zip_fd_ = -1;
	};

	static int dexoptAnalyze(int argc, char** argv) {
	DexoptAnalyzer analyzer;

	// Parse arguments. Argument mistakes will lead to exit(kErrorInvalidArguments) in UsageError.
	analyzer.ParseArgs(argc, argv);
	return analyzer.GetDexOptNeeded();
	}

	} // namespace art

	int main(int argc, char **argv) {
	return art::dexoptAnalyze(argc, argv);
	}