63 lines
1.5 KiB
C++
63 lines
1.5 KiB
C++
|
/******************************Module*Header*******************************\
|
||
|
|
* Module Name: timer.hxx
|
||
|
|
*
|
||
|
|
* Copyright (c) 1996 Microsoft Corporation
|
||
|
|
*
|
||
|
|
\**************************************************************************/
|
||
|
|
|
||
|
|
#ifndef __timer_hxx__
|
||
|
|
#define __timer_hxx__
|
||
|
|
|
||
|
|
#include <time.h>
|
||
|
|
|
||
|
|
#define MillisToSeconds( dwMillis ) \
|
||
|
|
( (float) (dwMillis) / 1000.0f )
|
||
|
|
|
||
|
|
#define SecondsToMillis( fSeconds ) \
|
||
|
|
( (DWORD) ((fSeconds) * 1000.0f) )
|
||
|
|
|
||
|
|
// The basic timer is like a stopwatch
|
||
|
|
|
||
|
|
class TIMER {
|
||
|
|
public:
|
||
|
|
TIMER();
|
||
|
|
void Start();
|
||
|
|
float Stop();
|
||
|
|
void Reset();
|
||
|
|
float Elapsed();
|
||
|
|
protected:
|
||
|
|
DWORD dwStartMillis;
|
||
|
|
DWORD dwElapsedMillis;
|
||
|
|
DWORD dwTotalMillis;
|
||
|
|
BOOL bRunning;
|
||
|
|
};
|
||
|
|
|
||
|
|
class UPDATE_TIMER : public TIMER {
|
||
|
|
public:
|
||
|
|
UPDATE_TIMER( float fUpdateInterval );
|
||
|
|
BOOL Update( int numItems, float *fRate );
|
||
|
|
void Reset();
|
||
|
|
protected:
|
||
|
|
int nItems;
|
||
|
|
int nTotalItems; // total # items drawn
|
||
|
|
float fUpdateRate; // items per second
|
||
|
|
DWORD updateInterval; // interval between timer updates in ms
|
||
|
|
};
|
||
|
|
|
||
|
|
#define MAX_RESULTS 10
|
||
|
|
|
||
|
|
class AVG_UPDATE_TIMER : public UPDATE_TIMER {
|
||
|
|
public:
|
||
|
|
AVG_UPDATE_TIMER( float fUpdateInterval, int numResults );
|
||
|
|
BOOL Update( int numItems, float *fRate );
|
||
|
|
void Reset();
|
||
|
|
private:
|
||
|
|
float fResults[MAX_RESULTS];
|
||
|
|
int nResults; // current # of results
|
||
|
|
int nMaxResults; // max # of results for averaging
|
||
|
|
int iOldestResult; // index of oldest result
|
||
|
|
float fSummedResults; // current sum of results
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif // __timer_hxx__
|