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/*******************************************************************************
* shroudBNC - an object-oriented framework for IRC *
* Copyright (C) 2005-2014 Gunnar Beutner *
* *
* 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. *
*******************************************************************************/
#include "StdAfx.h"
static time_t g_NextCall = 0;
static CList<CTimer *> *g_Timers = NULL;
/**
* CTimer
*
* Constructs a timer.
*
* @param Interval the interval (in seconds) between calls to the timer's function
* @param Repeat whether the timer should repeat itself
* @param Function the timer's function
* @param Cookie a timer-specific cookie
*/
CTimer::CTimer(unsigned int Interval, bool Repeat, TimerProc Function, void *Cookie) {
m_Interval = Interval;
m_Repeat = Repeat;
m_Proc = Function;
m_Cookie = Cookie;
Reschedule(g_CurrentTime + Interval);
if (g_Timers == NULL) {
g_Timers = new CList<CTimer *>();
}
m_Link = g_Timers->Insert(this);
}
/**
* ~CTimer
*
* Destroys a timer.
*/
CTimer::~CTimer(void) {
g_Timers->Remove(m_Link);
RescheduleTimers();
}
/**
* Destroy
*
* Manually destroys a timer.
*/
void CTimer::Destroy(void) {
delete this;
}
/**
* Call
*
* Calls the timer's function
*
* @param Now the current time
*/
bool CTimer::Call(time_t Now) {
time_t ThisCall;
bool ReturnValue;
ThisCall = m_Next;
if (m_Interval != 0 && m_Repeat) {
Reschedule(Now + m_Interval);
}
if (m_Proc == NULL) {
if (m_Interval == 0) {
Destroy();
return false;
}
return true;
}
ReturnValue = m_Proc(ThisCall, m_Cookie);
if (!ReturnValue || !m_Repeat) {
Destroy();
return false;
}
return true;
}
/**
* GetNextCall
*
* Returns the next scheduled time of execution.
*/
time_t CTimer::GetNextCall(void) {
if (g_NextCall == 0) {
return g_CurrentTime + 120;
} else {
return g_NextCall;
}
}
/**
* GetInterval
*
* Returns the timer's interval.
*/
int CTimer::GetInterval(void) const {
return m_Interval;
}
/**
* GetRepeat
*
* Returns whether the timer is being called repeatedly.
*/
bool CTimer::GetRepeat(void) const {
return m_Repeat;
}
/**
* Reschedule
*
* Reschedules the next call for the timer.
*
* @param Next the next call
*/
void CTimer::Reschedule(time_t Next) {
m_Next = Next;
if (Next < g_NextCall || g_NextCall == 0) {
g_NextCall = Next;
}
}
void CTimer::DestroyAllTimers(void) {
for (CListCursor<CTimer *> TimerCursor(g_Timers); TimerCursor.IsValid(); TimerCursor.Proceed()) {
delete *TimerCursor;
}
}
void CTimer::CallTimers(void) {
g_NextCall = 0;
for (CListCursor<CTimer *> TimerCursor(g_Timers); TimerCursor.IsValid(); TimerCursor.Proceed()) {
if (g_CurrentTime >= (*TimerCursor)->m_Next) {
(*TimerCursor)->Call(g_CurrentTime);
} else if ((*TimerCursor)->m_Next < g_NextCall || g_NextCall == 0) {
g_NextCall = (*TimerCursor)->m_Next;
}
}
}
void CTimer::RescheduleTimers(void) {
time_t Best;
Best = g_CurrentTime + 120;
for (CListCursor<CTimer *> TimerCursor(g_Timers); TimerCursor.IsValid(); TimerCursor.Proceed()) {
if ((*TimerCursor)->m_Next < Best) {
Best = (*TimerCursor)->m_Next;
}
}
g_NextCall = Best;
}
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