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/*
* Ouroboros - Copyright (C) 2016
*
* Ring buffer for incoming SDUs
*
* 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_SHM_RBUFF_H
#define OUROBOROS_SHM_RBUFF_H
#include <sys/types.h>
#include <sys/time.h>
struct shm_rbuff;
struct shm_rbuff * shm_rbuff_create(pid_t api, int port_id);
struct shm_rbuff * shm_rbuff_open(pid_t api, int port_id);
void shm_rbuff_close(struct shm_rbuff * rb);
void shm_rbuff_destroy(struct shm_rbuff * rb);
int shm_rbuff_block(struct shm_rbuff * rb);
void shm_rbuff_unblock(struct shm_rbuff * rb);
int shm_rbuff_write(struct shm_rbuff * rb,
ssize_t idx);
ssize_t shm_rbuff_read(struct shm_rbuff * rb);
ssize_t shm_rbuff_read_b(struct shm_rbuff * rb,
const struct timespec * timeout);
void shm_rbuff_reset(struct shm_rbuff * rb);
#endif /* OUROBOROS_SHM_RBUFF_H */
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