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/*
* Ouroboros - Copyright (C) 2016
*
* Ring buffer for application processes
*
* Dimitri Staessens <dimitri.staessens@intec.ugent.be>
* Sander Vrijders <sander.vrijders@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_AP_RBUFF_H
#define OUROBOROS_SHM_AP_RBUFF_H
#ifndef SHM_AP_RBUFF
#define SHM_AP_RBUFF_PREFIX "ouroboros_rb_"
#endif
#ifndef SHM_RBUFF_SIZE
#define SHM_RBUFF_SIZE (1 << 14)
#endif
#include <sys/types.h>
struct shm_ap_rbuff;
struct rb_entry {
ssize_t index;
int port_id;
};
struct shm_ap_rbuff * shm_ap_rbuff_create();
struct shm_ap_rbuff * shm_ap_rbuff_open();
void shm_ap_rbuff_close(struct shm_ap_rbuff * rb);
void shm_ap_rbuff_destroy(struct shm_ap_rbuff * rb);
int shm_ap_rbuff_write(struct shm_ap_rbuff * rb,
struct rb_entry * e);
struct rb_entry * shm_ap_rbuff_read(struct shm_ap_rbuff * rb);
ssize_t shm_ap_rbuff_read_port(struct shm_ap_rbuff * rb,
int port_id);
#endif /* OUROBOROS_SHM_AP_RBUFF_H */
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