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// $Id: FragmentStore.h,v 1.10 2011/03/30 15:16:48 mommsen Exp $

#ifndef EventFilter_StorageManager_FragmentStore_h
#define EventFilter_StorageManager_FragmentStore_h

#include <map>

#include "IOPool/Streamer/interface/HLTInfo.h"

#include "EventFilter/StorageManager/interface/I2OChain.h"
#include "EventFilter/StorageManager/interface/Utils.h"


namespace stor {
  
  class FragmentStore
  {
  public:
    
    explicit FragmentStore(size_t maxMemoryUsageMB);

    const bool addFragment(I2OChain&);


    void addToStaleEventTimes(const utils::Duration_t);


    void resetStaleEventTimes();


    const bool getStaleEvent(I2OChain&, utils::Duration_t timeout);


    inline void clear()
    { store_.clear(); memoryUsed_ = 0; }


    inline bool empty() const
    { return store_.empty(); }


    inline bool full() const
    { return (memoryUsed_ >= maxMemoryUsage_); }


    inline unsigned int size() const
    { return store_.size(); }


    inline size_t memoryUsed() const
    { return memoryUsed_; }

    
  private:

    //Prevent copying of the FragmentStore
    FragmentStore(FragmentStore const&);
    FragmentStore& operator=(FragmentStore const&);

    typedef std::map<FragKey, I2OChain> fragmentMap;
    fragmentMap store_;
    
    size_t memoryUsed_;
    const size_t maxMemoryUsage_;
  };
  
} // namespace stor

#endif // EventFilter_StorageManager_FragmentStore_h