zoneminder/src/zm_timer.h

91 lines
2.0 KiB
C++

//
// ZoneMinder Timer Class Interface, $Date$, $Revision$
// Copyright (C) 2001-2008 Philip Coombes
//
// 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
#ifndef ZM_TIMER_H
#define ZM_TIMER_H
#ifdef HAVE_SYS_SYSCALL_H
#include <sys/syscall.h>
#endif // HAVE_SYS_SYSCALL_H
#include "zm_thread.h"
#include "zm_exception.h"
class Timer
{
private:
class TimerException : public Exception
{
public:
TimerException( const std::string &message ) : Exception( stringtf( "(%d) "+message, (long int)syscall(SYS_gettid) ) )
{
}
};
class TimerThread : public Thread
{
private:
typedef ThreadData<bool> ExpiryFlag;
private:
static int mNextTimerId;
private:
int mTimerId;
Timer &mTimer;
int mDuration;
int mRepeat;
int mReset;
ExpiryFlag mExpiryFlag;
Mutex mAccessMutex;
private:
void quit()
{
cancel();
}
public:
TimerThread( Timer &timer, int timeout, bool repeat );
~TimerThread();
void cancel();
void reset();
int run();
};
protected:
TimerThread mTimerThread;
protected:
Timer( int timeout, bool repeat=false );
public:
virtual ~Timer();
protected:
virtual void expire()=0;
public:
void cancel();
void reset();
};
#endif // ZM_TIMER_H