// Copyright 2019 Proyectos y Sistemas de Mantenimiento SL (eProsima).

//

// 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 _FASTDDS_THIRDPARTYBOOST_BOOSTCONFIG_H_

#define _FASTDDS_THIRDPARTYBOOST_BOOSTCONFIG_H_

#define BOOST_DATE_TIME_NO_LIB

#define BOOST_INTERPROCESS_ENABLE_TIMEOUT_WHEN_LOCKING

#define BOOST_INTERPROCESS_TIMEOUT_WHEN_LOCKING_DURATION_MS 1000

// We have patched part of the boost code, protecting all changes with this define

#define BOOST_FASTDDS_PATCHES

// Starting on boost 1.76.0, this will force native emulation, which is what we want as

// it is more performant

#define BOOST_INTERPROCESS_FORCE_NATIVE_EMULATION

#ifdef _MSC_VER

#include <stdlib.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <stdexcept>

// TODO(Adolfo): This will fail if windows system without program data in C: drive

#define BOOST_INTERPROCESS_SHARED_DIR_PATH "C:\\ProgramData\\eprosima\\fastrtps_interprocess"

// Check that generic emulation has not been accidentally enabled

#include <boost/interprocess/detail/workaround.hpp>

#if defined(BOOST_INTERPROCESS_FORCE_GENERIC_EMULATION)

#  error "BOOST_INTERPROCESS_FORCE_GENERIC_EMULATION must be disabled in boost/interprocess/detail/workarround.hpp"

#endif  // BOOST_INTERPROCESS_FORCE_GENERIC_EMULATION

#endif // _MSC_VER_

/**

 * This singleton class performs some necesary system dependent initializations

 * before start working with shared-memory

 */

class SharedMemEnvironment

{

public:

    SharedMemEnvironment()

#ifdef _MSC_VER

        : is_init_done_(false)

#endif // ifdef _MSC_VER

    {

    }

    /**

     * @return the singleton instance

     */

    static SharedMemEnvironment& get()

    {

        static SharedMemEnvironment singleton_instance;

        return singleton_instance;

    }

    /**

     * Perform the initializacion, only the first time is called.

     */

    void init()

    {

#ifdef _MSC_VER

        if (!is_init_done_)

        {

            get().create_shared_dir_if_doesnt_exist();

        }

        is_init_done_ = true;

#endif // ifdef _MSC_VER

    }

private:

#ifdef _MSC_VER

    bool is_init_done_;

    static void create_shared_dir_if_doesnt_exist()

    {

        struct stat info;

        // Cannot access shared_dir_path, we assume it doesn't exist

        if (stat(BOOST_INTERPROCESS_SHARED_DIR_PATH, &info) != 0)

        {

            // Try to create it

            if (system(("mkdir " BOOST_INTERPROCESS_SHARED_DIR_PATH)) != 0)

            {

                throw std::runtime_error("couldn't access nor create " BOOST_INTERPROCESS_SHARED_DIR_PATH);

            }

        }

    }

    void clean()

    {

        system("del " BOOST_INTERPROCESS_SHARED_DIR_PATH "\\*.* /Q");

    }

#endif // ifdef _MSC_VER

};

#endif // _FASTDDS_THIRDPARTYBOOST_BOOSTCONFIG_H_