TuttleOFX/libraries/tuttle/src/tuttle/host/memory/MemoryCache.hpp

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#ifndef _TUTTLE_HOST_CORE_MEMORYCACHE_HPP_
#define _TUTTLE_HOST_CORE_MEMORYCACHE_HPP_

#include "IMemoryCache.hpp"
#include "IMemoryPool.hpp"

#include <boost/unordered_map.hpp>
#include <boost/thread.hpp>

namespace tuttle {
namespace host {
namespace memory {

class MemoryCache : public IMemoryCache
{
typedef MemoryCache This;

public:
        MemoryCache( const MemoryCache& other )
        {
                *this = other;
        }
        MemoryCache() {}
        ~MemoryCache() {}

        MemoryCache& operator=( const MemoryCache& cache );

private:
        typedef boost::unordered_map<Key, CACHE_ELEMENT, KeyHash> MAP;
        //      typedef std::map<Key, CACHE_ELEMENT> MAP;
        MAP _map;
        mutable boost::mutex _mutexMap;  ///< Mutex for cache data map.

        MAP::const_iterator getIteratorForValue( const CACHE_ELEMENT& ) const;
        MAP::iterator       getIteratorForValue( const CACHE_ELEMENT& );

public:
        void               put( const std::string& identifier, const double time, CACHE_ELEMENT pData );
        CACHE_ELEMENT      get( const std::string& identifier, const double time ) const;
        CACHE_ELEMENT      get( const std::size_t& i ) const;
        CACHE_ELEMENT      getUnusedWithSize( const std::size_t requestedSize ) const;
        std::size_t        size() const;
        bool               empty() const;
        bool               inCache( const CACHE_ELEMENT& ) const;
        double             getTime( const CACHE_ELEMENT& ) const;
        const std::string& getPluginName( const CACHE_ELEMENT& ) const;
        bool               remove( const CACHE_ELEMENT& );
        void               clearUnused();
        void               clearAll();
        std::ostream& outputStream( std::ostream& os ) const
        {
                os << *this;
                return os;
        }
        friend std::ostream& operator<<( std::ostream& os, const MemoryCache& v );
};

#ifndef SWIG
std::ostream& operator<<( std::ostream& os, const MemoryCache& memoryCache );
#endif
}
}
}

#endif