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153 lines
3.7 KiB
153 lines
3.7 KiB
/*
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* Copyright (C) 2012 Frafos GmbH
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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. This program is released under
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* the GPL with the additional exemption that compiling, linking,
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* and/or using OpenSSL is allowed.
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*
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* For a license to use the SEMS 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 "AmEventQueueProcessor.h"
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#include "AmEventQueue.h"
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#include <deque>
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using std::deque;
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AmEventQueueProcessor::AmEventQueueProcessor()
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{
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threads_it = threads.begin();
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}
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AmEventQueueProcessor::~AmEventQueueProcessor()
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{
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threads_mut.lock();
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threads_it = threads.begin();
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while(threads_it != threads.end()) {
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(*threads_it)->stop();
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(*threads_it)->join();
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delete (*threads_it);
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threads_it++;
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}
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threads_mut.unlock();
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}
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EventQueueWorker* AmEventQueueProcessor::getWorker()
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{
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threads_mut.lock();
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if (!threads.size()) {
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ERROR("requesting EventQueue processing thread but none available\n");
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threads_mut.unlock();
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return NULL;
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}
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// round robin
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if (threads_it == threads.end())
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threads_it = threads.begin();
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EventQueueWorker* res = *threads_it;
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threads_it++;
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threads_mut.unlock();
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return res;
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}
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int AmEventQueueProcessor::startEventQueue(AmEventQueue* q)
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{
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EventQueueWorker* worker = getWorker();
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if(!worker) return -1;
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worker->startEventQueue(q);
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return 0;
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}
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void AmEventQueueProcessor::addThreads(unsigned int num_threads)
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{
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DBG("starting %u session processor threads\n", num_threads);
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threads_mut.lock();
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for (unsigned int i=0; i < num_threads;i++) {
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threads.push_back(new EventQueueWorker());
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threads.back()->start();
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}
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threads_it = threads.begin();
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DBG("now %zd session processor threads running\n", threads.size());
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threads_mut.unlock();
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}
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EventQueueWorker::EventQueueWorker()
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: runcond(false)
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{
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}
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EventQueueWorker::~EventQueueWorker() {
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}
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void EventQueueWorker::notify(AmEventQueue* sender)
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{
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process_queues_mut.lock();
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process_queues.push_back(sender);
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inc_ref(sender);
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runcond.set(true);
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process_queues_mut.unlock();
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}
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void EventQueueWorker::run()
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{
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while (!stop_requested()) {
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runcond.wait_for();
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DBG("running processing loop\n");
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process_queues_mut.lock();
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while(!process_queues.empty()) {
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AmEventQueue* ev_q = process_queues.front();
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process_queues.pop_front();
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process_queues_mut.unlock();
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if(!ev_q->processingCycle()) {
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ev_q->setEventNotificationSink(NULL);
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if(!ev_q->is_finalized())
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ev_q->finalize();
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}
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dec_ref(ev_q);
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process_queues_mut.lock();
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}
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runcond.set(false);
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process_queues_mut.unlock();
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}
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}
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void EventQueueWorker::on_stop()
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{
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INFO("requesting worker to stop.\n");
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runcond.set(true);
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}
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void EventQueueWorker::startEventQueue(AmEventQueue* q)
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{
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if(q->startup())
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// register us to be notified if some event comes to the session
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q->setEventNotificationSink(this);
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}
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