wxWidgets/include/wx/stopwatch.h

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/////////////////////////////////////////////////////////////////////////////
// Name: wx/stopwatch.h
// Purpose: wxStopWatch and global time-related functions
// Author: Julian Smart (wxTimer), Sylvain Bougnoux (wxStopWatch)
// Created: 26.06.03 (extracted from wx/timer.h)
// RCS-ID: $Id$
// Copyright: (c) 1998-2003 wxWidgets team
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_STOPWATCH_H_
#define _WX_STOPWATCH_H_
#include "wx/longlong.h"
// ----------------------------------------------------------------------------
// wxStopWatch: measure time intervals with up to 1ms resolution
// ----------------------------------------------------------------------------
#if wxUSE_STOPWATCH
class WXDLLIMPEXP_BASE wxStopWatch
{
public:
// ctor starts the stop watch
wxStopWatch() { m_pauseCount = 0; Start(); }
// start the stop watch at the moment t0
void Start(long t0 = 0);
// pause the stop watch
void Pause()
{
if ( !m_pauseCount++ )
m_pause = GetElapsedTime();
}
// resume it
void Resume()
{
wxASSERT_MSG( m_pauseCount > 0,
_T("Resuming stop watch which is not paused") );
if ( !--m_pauseCount )
Start(m_pause);
}
// get elapsed time since the last Start() in milliseconds
long Time() const;
protected:
// returns the elapsed time since t0
long GetElapsedTime() const;
private:
// the time of the last Start()
wxLongLong m_t0;
// the time of the last Pause() (only valid if m_pauseCount > 0)
long m_pause;
// if > 0, the stop watch is paused, otherwise it is running
int m_pauseCount;
};
#endif // wxUSE_STOPWATCH
#if wxUSE_LONGLONG
// Starts a global timer
// -- DEPRECATED: use wxStopWatch instead
void WXDLLIMPEXP_BASE wxStartTimer();
// Gets elapsed milliseconds since last wxStartTimer or wxGetElapsedTime
// -- DEPRECATED: use wxStopWatch instead
long WXDLLIMPEXP_BASE wxGetElapsedTime(bool resetTimer = true);
#endif // wxUSE_LONGLONG
// ----------------------------------------------------------------------------
// global time functions
// ----------------------------------------------------------------------------
// Get number of seconds since local time 00:00:00 Jan 1st 1970.
extern long WXDLLIMPEXP_BASE wxGetLocalTime();
// Get number of seconds since GMT 00:00:00, Jan 1st 1970.
extern long WXDLLIMPEXP_BASE wxGetUTCTime();
#if wxUSE_LONGLONG
// Get number of milliseconds since local time 00:00:00 Jan 1st 1970
extern wxLongLong WXDLLIMPEXP_BASE wxGetLocalTimeMillis();
#endif // wxUSE_LONGLONG
#define wxGetCurrentTime() wxGetLocalTime()
#endif // _WX_STOPWATCH_H_