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///////////////////////////////////////////////////////////////////////////////
// $Workfile: Timer.h $
// $Archive: /WorkspaceWhiz/Src/Shared/Timer.h $
// $Date:: 1/03/01 12:13a $ $Revision:: 3 $ $Author: Jjensen $
///////////////////////////////////////////////////////////////////////////////
// This source file is part of the Workspace Whiz! source distribution and
// is Copyright 1997-2001 by Joshua C. Jensen. (http://workspacewhiz.com/)
//
// The code presented in this file may be freely used and modified for all
// non-commercial and commercial purposes so long as due credit is given and
// this header is left intact.
///////////////////////////////////////////////////////////////////////////////
#pragma once
class CTimer
{
public:
CTimer(void);
void Reset(void);
void Start(void);
void Stop(void);
double GetDuration(void) const;
double GetMillisecs(void) const;
protected:
LARGE_INTEGER m_startTime;
LONGLONG m_totalTime;
LONGLONG m_frequency;
};
inline CTimer::CTimer(void) :
m_totalTime(0)
{
LARGE_INTEGER liFrequency;
QueryPerformanceFrequency(&liFrequency);
m_frequency = liFrequency.QuadPart;
m_totalTime = 0;
}
inline void CTimer::Reset()
{
m_totalTime = 0;
}
inline void CTimer::Start(void)
{
QueryPerformanceCounter(&m_startTime);
}
inline void CTimer::Stop(void)
{
LARGE_INTEGER stopTime;
QueryPerformanceCounter(&stopTime);
m_totalTime += (stopTime.QuadPart - m_startTime.QuadPart);
}
inline double CTimer::GetDuration(void) const
{
return (double)m_totalTime * 1000000.0 / m_frequency;
}
inline double CTimer::GetMillisecs(void) const
{
return (double)m_totalTime * 1000000.0 / m_frequency / 1000.0;
}
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Joshua Jensen is a gamer at heart and as such, creates games for a living. He has the distinct pleasure of creating titles exclusively for the Xbox.
In his spare time, he maintains a Visual C++ add-in called Workspace Whiz! Find it at http://workspacewhiz.com/.