// %flair:license{
// This file is part of the Flair framework distributed under the
// CECILL-C License, Version 1.0.
// %flair:license}
/*!
 * \file SharedMem.h
 * \brief Class defining a shared memory
 * \author Guillaume Sanahuja, Copyright Heudiasyc UMR UTC/CNRS 7253
 * \date 2014/02/10
 * \version 4.0
 */

#ifndef SHAREDMEM_H
#define SHAREDMEM_H

#include <Object.h>
#include <semaphore.h>

class SharedMem_impl;

namespace flair
{
namespace core
{

    /*! \class SharedMem
    *
    * \brief Class defining a shared memory
    *
    * Shared memory is identified by its name so it can be accessed
    * by another processus using its name.
    */

    class SharedMem: public Object
    {
        public:
            /*!
            * \brief Constructor
            *
            * Construct a shared memory object
            *
            * \param parent parent
            * \param name name
            * \param size size of the shared memory
            */
            SharedMem(const Object* parent,std::string name,size_t size);

            /*!
            * \brief Destructor
            *
            */
            ~SharedMem();

            /*!
            * \brief Write
            *
            * \param buf input buffer to write to memory
            * \param size buffer size
            */
            void Write(const char* buf,size_t size);

            /*!
            * \brief Read
            *
            * \param buf output buffer to write from memory
            * \param size buffer size
            */
            void Read(char* buf,size_t size) const;

        private:
            SharedMem_impl* pimpl_;
    };

} // end namespace core
} // end namespace flair

#endif // SHAREDMEM_H