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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 IPCPD_FLOW_H
#define IPCPD_FLOW_H
#include <ouroboros/common.h>
#ifdef FLOW_MT_SAFE
#include <pthread.h>
#endif
/* 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 00037777
typedef long port_id_t;
enum flow_state {
FLOW_INIT = 0,
FLOW_ALLOCATED,
FLOW_PENDING
};
typedef struct flow {
port_id_t port_id;
uint16_t flags;
uint8_t state;
#ifdef FLOW_MT_SAFE
pthread_mutex_t lock;
#endif
} flow_t;
flow_t * flow_create(port_id_t port_id);
void flow_destroy(flow_t * flow);
int flow_set_opts(flow_t * flow, uint16_t opts);
uint16_t flow_get_opts(const flow_t * flow);
#endif /* IPCPD_FLOW_H */
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