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GHOST_TimerManager.cpp

/**
 * $Id: GHOST_TimerManager.cpp,v 1.3 2002/11/25 09:52:56 mein Exp $
 * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
 *
 * 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. The Blender
 * Foundation also sells licenses for use in proprietary software under
 * the Blender License.  See http://www.blender.org/BL/ for information
 * about this.
 *
 * 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.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL/BL DUAL LICENSE BLOCK *****
 */

/**

 * $Id: GHOST_TimerManager.cpp,v 1.3 2002/11/25 09:52:56 mein Exp $
 * Copyright (C) 2001 NaN Technologies B.V.
 * @author  Maarten Gribnau
 * @date    May 31, 2001
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "GHOST_TimerManager.h"

#include <algorithm>

#include "GHOST_TimerTask.h"


00051 GHOST_TimerManager::GHOST_TimerManager()
{
}


00056 GHOST_TimerManager::~GHOST_TimerManager()
{
      disposeTimers();
}


00062 GHOST_TUns32 GHOST_TimerManager::getNumTimers()
{
      return (GHOST_TUns32)m_timers.size();
}


00068 bool GHOST_TimerManager::getTimerFound(GHOST_TimerTask* timer)
{
      TTimerVector::const_iterator iter = std::find(m_timers.begin(), m_timers.end(), timer);
      return iter != m_timers.end();
}


00075 GHOST_TSuccess GHOST_TimerManager::addTimer(GHOST_TimerTask* timer)
{
      GHOST_TSuccess success;
      if (!getTimerFound(timer)) {
            // Add the timer task
            m_timers.push_back(timer);
            success = GHOST_kSuccess;
      }
      else {
            success = GHOST_kFailure;
      }
      return success;
}


00090 GHOST_TSuccess GHOST_TimerManager::removeTimer(GHOST_TimerTask* timer)
{
      GHOST_TSuccess success;
      TTimerVector::iterator iter = std::find(m_timers.begin(), m_timers.end(), timer);
      if (iter != m_timers.end()) {
            // Remove the timer task
            m_timers.erase(iter);
            delete timer;
            timer = 0;
            success = GHOST_kSuccess;
      }
      else {
            success = GHOST_kFailure;
      }
      return success;
}

00107 GHOST_TUns64 GHOST_TimerManager::nextFireTime()
{
      GHOST_TUns64 smallest = GHOST_kFireTimeNever;
      TTimerVector::iterator iter;
      
      for (iter = m_timers.begin(); iter != m_timers.end(); iter++) {
            GHOST_TUns64 next = (*iter)->getNext();
            
            if (next<smallest)
                  smallest = next;
      }
      
      return smallest;
}

00122 bool GHOST_TimerManager::fireTimers(GHOST_TUns64 time)
{
      TTimerVector::iterator iter;
      bool anyProcessed = false;

      for (iter = m_timers.begin(); iter != m_timers.end(); iter++) {
            if (fireTimer(time, *iter))
                  anyProcessed = true;
      }

      return anyProcessed;
}


00136 bool GHOST_TimerManager::fireTimer(GHOST_TUns64 time, GHOST_TimerTask* task)
{
      GHOST_TUns64 next = task->getNext();

      // Check if the timer should be fired
      if (time > next) {
            // Fire the timer
            GHOST_TimerProcPtr timerProc = task->getTimerProc();
            GHOST_TUns64 start = task->getStart();
            timerProc(task, time - start);

            // Update the time at which we will fire it again
            GHOST_TUns64 interval = task->getInterval();
            GHOST_TUns64 numCalls = (next - start) / interval;
            numCalls++;
            next = start + numCalls * interval;
            task->setNext(next);

            return true;
      } else {
            return false;
      }
}


00161 void GHOST_TimerManager::disposeTimers()
{
      while (m_timers.size() > 0) {
            delete m_timers[0];
            m_timers.erase(m_timers.begin());
      }
}

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