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/*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*/
/** \file
* \ingroup GHOST
*/
/**
* Copyright (C) 2001 NaN Technologies B.V.
*/
#include "GHOST_TimerManager.h"
#include <algorithm>
#include "GHOST_TimerTask.h"
GHOST_TimerManager::GHOST_TimerManager()
{
}
GHOST_TimerManager::~GHOST_TimerManager()
{
disposeTimers();
}
uint32_t GHOST_TimerManager::getNumTimers()
{
return (uint32_t)m_timers.size();
}
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();
}
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;
}
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;
success = GHOST_kSuccess;
}
else {
success = GHOST_kFailure;
}
return success;
}
uint64_t GHOST_TimerManager::nextFireTime()
{
uint64_t smallest = GHOST_kFireTimeNever;
TTimerVector::iterator iter;
for (iter = m_timers.begin(); iter != m_timers.end(); ++iter) {
uint64_t next = (*iter)->getNext();
if (next < smallest)
smallest = next;
}
return smallest;
}
bool GHOST_TimerManager::fireTimers(uint64_t 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;
}
bool GHOST_TimerManager::fireTimer(uint64_t time, GHOST_TimerTask *task)
{
uint64_t next = task->getNext();
/* Check if the timer should be fired. */
if (time > next) {
/* Fire the timer. */
GHOST_TimerProcPtr timerProc = task->getTimerProc();
uint64_t start = task->getStart();
timerProc(task, time - start);
/* Update the time at which we will fire it again. */
uint64_t interval = task->getInterval();
uint64_t numCalls = (next - start) / interval;
numCalls++;
next = start + numCalls * interval;
task->setNext(next);
return true;
}
else {
return false;
}
}
void GHOST_TimerManager::disposeTimers()
{
while (m_timers.empty() == false) {
delete m_timers[0];
m_timers.erase(m_timers.begin());
}
}
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