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sems/core/AmEventQueueProcessor.h

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2.4 KiB

/*
* Copyright (C) 2012 Frafos GmbH
*
* This file is part of SEMS, a free SIP media server.
*
* SEMS 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 released under
* the GPL with the additional exemption that compiling, linking,
* and/or using OpenSSL is allowed.
*
* For a license to use the SEMS software under conditions
* other than those described here, or to purchase support for this
* software, please contact iptel.org by e-mail at the following addresses:
* info@iptel.org
*
* SEMS 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
*/
#ifndef _AmEventQueueProcessor_h_
#define _AmEventQueueProcessor_h_
#include "AmThread.h"
#include "AmEventQueue.h"
#include <deque>
#include <vector>
using std::deque;
using std::vector;
class EventQueueWorker
: public AmThread,
public AmEventNotificationSink
{
AmCondition runcond;
std::deque<AmEventQueue*> process_queues;
AmMutex process_queues_mut;
public:
EventQueueWorker();
~EventQueueWorker();
// AmThread interface
void run();
void on_stop();
// AmEventNotificationSink interface
void notify(AmEventQueue* sender);
void startEventQueue(AmEventQueue* q);
};
/**
* The event queue processor processes event queues
* using a pool of workers.
*
* Note: the queue's ref-count should be increased
* before binding the queue to the processor. Also,
* the ref-count should be decreased at some place
* during or after finalize(), so that the queue
* gets disposed correctly.
*/
class AmEventQueueProcessor {
typedef vector<EventQueueWorker*> Workers;
Workers threads;
AmMutex threads_mut;
Workers::iterator threads_it;
public:
AmEventQueueProcessor();
~AmEventQueueProcessor();
void addThreads(unsigned int num_threads);
EventQueueWorker* getWorker();
int startEventQueue(AmEventQueue* q);
};
#endif // _AmEventQueueProcessor_h_