mongodb/db/dbstats.h

// dbstats.h

#include "../stdafx.h"
#include "jsobj.h"
#include "../util/message.h"
#include "../util/processinfo.h"

namespace mongo {

    /**
     * for storing operation counters
     * note: not thread safe.  ok with that for speed
     */
    class OpCounters {
    public:
        
        OpCounters();

        int * getInsert(){ return _insert; }
        int * getQuery(){ return _query; }
        int * getUpdate(){ return _update; }
        int * getDelete(){ return _delete; }
        int * getGetGore(){ return _getmore; }

        void gotInsert(){ _insert[0]++; }
        void gotQuery(){ _query[0]++; }
        void gotUpdate(){ _update[0]++; }
        void gotDelete(){ _delete[0]++; }
        void gotGetMore(){ _getmore[0]++; }

        void gotOp( int op );

        BSONObj& getObj(){ return _obj; }
    private:
        BSONObj _obj;
        int * _insert;
        int * _query;
        int * _update;
        int * _delete;
        int * _getmore;
    };
    
    extern OpCounters globalOpCounters;

    class IndexCounters {
    public:
        IndexCounters();
        
        void btree( char * node ){
            if ( ! _memSupported )
                return;
            if ( _sampling++ % _samplingrate )
                return;
            btree( _pi.blockInMemory( node ) );
        }

        void btree( bool memHit ){
            if ( memHit )
                _btreeMemHits++;
            else
                _btreeMemMisses++;
            _btreeAccesses++;
        }
        void btreeHit(){ _btreeMemHits++; _btreeAccesses++; }
        void btreeMiss(){ _btreeMemMisses++; _btreeAccesses++; }
        
        void append( BSONObjBuilder& b );
        
    private:
        ProcessInfo _pi;
        bool _memSupported;

        int _sampling;
        int _samplingrate;
        
        int _resets;
        long long _maxAllowed;
        
        long long _btreeMemMisses;
        long long _btreeMemHits;
        long long _btreeAccesses;
    };

    extern IndexCounters globalIndexCounters;

}