ResourcePoolStats.hh

//********************************************************************
//*** ResourcePool/ResourcePoolStats.hh
//*** Copyright (c) 2003-2009 by Markus Winand <mws@fatalmind.com>
//*** $Id: ResourcePoolStats.hh,v 1.4 2009-03-02 14:16:44 mws Exp $
//********************************************************************
/*
This file is part of ResourcePool.

ResourcePool is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.

ResourcePool is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with ResourcePool; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307  USA */

#ifndef RESOURCEPOOL_RESOURCEPOOLSTATS_HH
#define RESOURCEPOOL_RESOURCEPOOLSTATS_HH

#include <ostream>

namespace fatalmind {

class ResourcePoolStats {
    public:
        ResourcePoolStats();
        ResourcePoolStats(const ResourcePoolStats& rho, int usedSize, int freeSize);
        ~ResourcePoolStats();

        unsigned long int getCalls() const;
        unsigned long int waitEvents() const;
        unsigned long int failCalls() const;
        int usedSize() const;
        int freeSize() const;
        float waitRatio() const;
        float failRatio() const;

        ResourcePoolStats& operator-=(const ResourcePoolStats&);
        ResourcePoolStats& operator+=(const ResourcePoolStats&);

        // those methods are public so that ResourcePool<XX> can access
        // but undocumented since it is not inteded for everybody's use.
        void getCall_(); 
        void waitEvent_();
        void failCall_();

    private:
        unsigned long int getCalls_;
        unsigned long int waitEvents_;
        unsigned long int failCalls_;
        int usedSize_;
        int freeSize_;
};


} // namespace fatalmind

std::ostream& operator<<(std::ostream& os, const fatalmind::ResourcePoolStats& stats);

#endif

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