StatsMgr.h

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#ifndef STATSMGR_H
#define STATSMGR_H

#include "Statistics.h"
#include "RWlock.h"


class StatsMgr
{
  public:
    Statistics copyStats() ;

    TSStats copyTSStats(
                StatisticsName  name,
                         int32  window_size = 0,
                       TimeSec  precision = 0,
                     TimeStamp  time_stamp = 0
                       )
                  throw( Statistics::Error );

    TSStats copyTSStats(
                StatisticsName  name,
                        IDVect  ids,
                         int32  window_size = 0,
                       TimeSec  precision = 0,
                     TimeStamp  time_stamp = 0
                       )
                  throw( Statistics::Error );

    FixLenTimeSeries copyStatistics(
                         StatisticsName  name, 
                                 IDType  id,
                                  int32  window_size = 0,
                                TimeSec  precision = 0, 
                              TimeStamp  time_stamp = 0
                                   )
                              throw( Statistics::Error, TSStats::Error );

    void addTSStats (
             StatisticsName   name,
                      int32   window_size,
                    TimeSec   precision,
               const IDVect  &ids
                    );

    bool hasTSStats ( StatisticsName   name );

    void addEmptyStatistics (
             StatisticsName  name,
                     IDType  id
                            );

    void deleteStatistics (
             StatisticsName  name,
                     IDType  id
                          );

    void readLock()    { _lock.readlock();    }

    void readUnlock()  { _lock.readunlock();  }

    void writeLock()   { _lock.writelock();   }

    void writeUnlock() { _lock.writeunlock(); }


    const Statistics  &getStats() const
    {   return( _stats );
    }


    Statistics  &getStats()
    {   return( _stats );
    }


private:
    /*
     * The data structure contains all statistics
     */
    Statistics   _stats;

    /*
     * The RWLock that used to protect _stats
     */
    RWLock  _lock;
};

ostream  &operator<< ( ostream  &os, StatsMgr  &stats_mgr );
    
#endif                          // STATSMGR_H

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