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/* Copyright (C) 2002-2003 RealVNC Ltd. All Rights Reserved.
*
* This 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 software 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 software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
//
// Timer.cxx
//
// XXX Lynx/OS 2.3: get proto for gettimeofday()
#ifdef Lynx
#include <sys/proto.h>
#endif
#include "Timer.h"
static Timer* timers;
void Timer::callTimers()
{
struct timeval now;
gettimeofday(&now, 0);
while (timers) {
Timer* timer = timers;
if (timer->before(now)) {
timers = timers->next;
timer->cb->timerCallback(timer);
} else {
break;
}
}
}
bool Timer::getTimeout(struct timeval* timeout)
{
if (!timers) return false;
Timer* timer = timers;
struct timeval now;
gettimeofday(&now, 0);
if (timer->before(now)) {
timeout->tv_sec = 0;
timeout->tv_usec = 0;
return true;
}
timeout->tv_sec = timer->tv.tv_sec - now.tv_sec;
if (timer->tv.tv_usec < now.tv_usec) {
timeout->tv_usec = timer->tv.tv_usec + 1000000 - now.tv_usec;
timeout->tv_sec--;
} else {
timeout->tv_usec = timer->tv.tv_usec - now.tv_usec;
}
return true;
}
Timer::Timer(TimerCallback* cb_) : cb(cb_) {}
Timer::~Timer()
{
cancel();
}
void Timer::reset(int ms) {
cancel();
gettimeofday(&tv, 0);
tv.tv_sec += ms / 1000;
tv.tv_usec += (ms % 1000) * 1000;
if (tv.tv_usec > 1000000) {
tv.tv_sec += 1;
tv.tv_usec -= 1000000;
}
Timer** timerPtr;
for (timerPtr = &timers; *timerPtr; timerPtr = &(*timerPtr)->next) {
if (before((*timerPtr)->tv)) {
next = *timerPtr;
*timerPtr = this;
break;
}
}
if (!*timerPtr) {
next = 0;
*timerPtr = this;
}
}
void Timer::cancel() {
for (Timer** timerPtr = &timers; *timerPtr; timerPtr = &(*timerPtr)->next) {
if (*timerPtr == this) {
*timerPtr = (*timerPtr)->next;
break;
}
}
}
bool Timer::isSet() {
for (Timer* timer = timers; timer; timer = timer->next)
if (timer == this) return true;
return false;
}
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