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131 lines
2.9 KiB
131 lines
2.9 KiB
/*
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* $Id: AmRtpScheduler.cpp,v 1.3 2003/11/25 16:01:39 rco Exp $
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*
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* Copyright (C) 2002-2003 Fhg Fokus
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*
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* This file is part of sems, a free SIP media server.
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*
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* sems is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version
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*
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* For a license to use the ser software under conditions
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* other than those described here, or to purchase support for this
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* software, please contact iptel.org by e-mail at the following addresses:
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* info@iptel.org
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*
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* sems is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "AmRtpScheduler.h"
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#include "log.h"
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#include <signal.h>
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#include <sys/time.h>
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bool operator < (const AmRtpTimer& l, const AmRtpTimer& r)
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{
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return timercmp(&l.time,&r.time,<);
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}
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AmRtpScheduler* AmRtpScheduler::_instance=0;
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AmRtpScheduler* AmRtpScheduler::instance()
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{
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if(!_instance)
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_instance = new AmRtpScheduler();
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return _instance;
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}
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AmRtpScheduler::AmRtpScheduler()
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{
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gettimeofday(&begin_time,NULL);
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}
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AmRtpScheduler::~AmRtpScheduler()
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{
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}
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AmSharedVar<bool> alarm_fired;
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void h_alarm(int signum)
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{
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alarm_fired.set(true);
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}
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void AmRtpScheduler::run()
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{
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sigset_t sigset;
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sigemptyset(&sigset);
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sigaddset(&sigset,SIGALRM);
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sigprocmask(SIG_BLOCK,&sigset,NULL);
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struct itimerval tval;
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tval.it_value.tv_sec = 0;
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tval.it_value.tv_usec = 10000; // 10ms
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tval.it_interval = tval.it_value;
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setitimer(ITIMER_REAL,&tval,NULL);
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sigfillset(&sigset);
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sigdelset(&sigset,SIGALRM);
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while(true){
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alarm_fired.set(false);
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signal(SIGALRM,h_alarm);
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while(!alarm_fired.get())
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sigsuspend(&sigset);
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struct timeval cur_time = getCurrentTime();
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timers_mut.lock();
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if(timers.empty()){
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timers_mut.unlock();
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continue;
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}
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set<AmRtpTimer>::iterator it = timers.begin();
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while( timercmp(&it->time,&cur_time,<)
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|| timercmp(&it->time,&cur_time,==) ){
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AmCondition<bool>* fired = it->fired;
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timers.erase(it);
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fired->set(true);
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if(timers.empty()) break;
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it = timers.begin();
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}
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timers_mut.unlock();
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}
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}
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void AmRtpScheduler::on_stop()
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{
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}
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void AmRtpScheduler::addTimer(const AmRtpTimer& timer)
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{
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timers_mut.lock();
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timers.insert(timer);
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timers_mut.unlock();
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}
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struct timeval AmRtpScheduler::getCurrentTime()
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{
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struct timeval tval;
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gettimeofday(&tval,NULL);
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timersub(&tval,&begin_time,&tval);
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return tval;
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}
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