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/*
* Ouroboros - Copyright (C) 2016 - 2021
*
* Ring buffer for incoming packets
*
* Dimitri Staessens <dimitri@ouroboros.rocks>
* Sander Vrijders <sander@ouroboros.rocks>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* version 2.1 as published by the Free Software Foundation.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., http://www.fsf.org/about/contact/.
*/
#ifndef OUROBOROS_SHM_RBUFF_H
#define OUROBOROS_SHM_RBUFF_H
#include <sys/types.h>
#include <sys/time.h>
#include <stdint.h>
#define ACL_RDWR 0000
#define ACL_RDONLY 0001
#define ACL_FLOWDOWN 0002
struct shm_rbuff;
struct shm_rbuff * shm_rbuff_create(pid_t pid,
int flow_id);
struct shm_rbuff * shm_rbuff_open(pid_t pid,
int flow_id);
void shm_rbuff_close(struct shm_rbuff * rb);
void shm_rbuff_destroy(struct shm_rbuff * rb);
void shm_rbuff_set_acl(struct shm_rbuff * rb,
uint32_t flags);
uint32_t shm_rbuff_get_acl(struct shm_rbuff * rb);
void shm_rbuff_fini(struct shm_rbuff * rb);
int shm_rbuff_write(struct shm_rbuff * rb,
size_t idx);
int shm_rbuff_write_b(struct shm_rbuff * rb,
size_t idx,
const struct timespec * abstime);
ssize_t shm_rbuff_read(struct shm_rbuff * rb);
ssize_t shm_rbuff_read_b(struct shm_rbuff * rb,
const struct timespec * abstime);
size_t shm_rbuff_queued(struct shm_rbuff * rb);
#endif /* OUROBOROS_SHM_RBUFF_H */
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