queue.h
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/**
* \file
* Holds requests ready for processing.
*
* \todo change this to a real queue.
*
* \author Georg Hopp
*
* \copyright
* Copyright © 2014 Georg Hopp
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __TR_QUEUE_H__
#define __TR_QUEUE_H__
#include <pthread.h>
#include <sys/types.h>
#include "trbase.h"
TR_CLASS(TR_Queue) {
void * msg;
TR_Queue next;
pthread_mutex_t lock;
/**
* first and last are only available in the initial queue
* element (the root). This elelment does not contain any message
* and exists only for organizational purpose.
*
* \todo next and first always have to be the same...so get rid
* of first.
*/
TR_Queue first;
TR_Queue last;
size_t nmsg;
int free_msgs;
};
TR_INSTANCE_INIT(TR_Queue);
TR_CLASSVARS_DECL(TR_Queue) {};
void TR_queuePut(TR_Queue, void *);
void TR_queuePutFirst(TR_Queue, void *);
void * TR_queueGet(TR_Queue);
TR_Queue TR_queueFind(TR_Queue, void *);
TR_Queue TR_queueFindParent(TR_Queue, void *);
void TR_queueDelete(TR_Queue, void *);
void TR_queueDestroy(TR_Queue);
#define TR_queueEmpty(this) (0 >= (this)->nmsg)
#endif // __TR_QUEUE_H__
// vim: set ts=4 sw=4: