P25Clients/P25Gateway/Timer.h

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/*
* Copyright (C) 2009,2010,2011,2014 by Jonathan Naylor G4KLX
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef Timer_H
#define Timer_H
class CTimer {
public:
CTimer(unsigned int ticksPerSec, unsigned int secs = 0U, unsigned int msecs = 0U);
~CTimer();
void setTimeout(unsigned int secs, unsigned int msecs = 0U);
unsigned int getTimeout() const;
unsigned int getTimer() const;
unsigned int getRemaining()
{
if (m_timeout == 0U || m_timer == 0U)
return 0U;
if (m_timer >= m_timeout)
return 0U;
return (m_timeout - m_timer) / m_ticksPerSec;
}
bool isRunning()
{
return m_timer > 0U;
}
void start(unsigned int secs, unsigned int msecs = 0U)
{
setTimeout(secs, msecs);
start();
}
void start()
{
if (m_timeout > 0U)
m_timer = 1U;
}
void stop()
{
m_timer = 0U;
}
bool hasExpired()
{
if (m_timeout == 0U || m_timer == 0U)
return false;
if (m_timer >= m_timeout)
return true;
return false;
}
void clock(unsigned int ticks = 1U)
{
if (m_timer > 0U && m_timeout > 0U)
m_timer += ticks;
}
private:
unsigned int m_ticksPerSec;
unsigned int m_timeout;
unsigned int m_timer;
};
#endif