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/*
* Ouroboros - Copyright (C) 2016
*
* Flows
*
* Dimitri Staessens <dimitri.staessens@intec.ugent.be>
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef OUROBOROS_FLOW_H
#define OUROBOROS_FLOW_H
#include <ouroboros/common.h>
#include <ouroboros/list.h>
#include <ouroboros/shm_ap_rbuff.h>
#include <pthread.h>
/* same values as fcntl.h */
#define FLOW_O_RDONLY 00000000
#define FLOW_O_WRONLY 00000001
#define FLOW_O_RDWR 00000002
#define FLOW_O_ACCMODE 00000003
#define FLOW_O_NONBLOCK 00004000
#define FLOW_O_DEFAULT 00000002
#define FLOW_O_INVALID (FLOW_O_WRONLY | FLOW_O_RDWR)
enum flow_state {
FLOW_NULL = 0,
FLOW_ALLOCATED,
FLOW_PENDING
};
typedef struct flow {
struct list_head list;
uint32_t port_id;
struct shm_ap_rbuff * rb;
enum flow_state state;
pthread_mutex_t lock;
} flow_t;
flow_t * flow_create(uint32_t port_id);
void flow_destroy(flow_t * flow);
#endif /* OUROBOROS_FLOW_H */
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