queue.h revision 8f775e0a5fbe731ba531e9ef613571bdb0adf6b3
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2010 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*
*/
#ifndef _QUEUE_H
#define _QUEUE_H
#ifdef __cplusplus
extern "C" {
#endif
#include <pthread.h>
#include <stddef.h>
typedef struct aln audit_link_t;
struct aln {
audit_link_t *aln_next;
};
/* one audit_rec_t per audit record */
typedef struct abq audit_rec_t;
struct abq {
audit_link_t abq_l;
int abq_ref_count;
size_t abq_buf_len; /* space allocated */
size_t abq_data_len; /* space used */
char abq_buffer[1]; /* variable length */
};
#define AUDIT_REC_HEADER offsetof(audit_rec_t, abq_buffer[0])
/* one audit_q_t entry per audit record per plugin */
typedef struct aqq audit_q_t; /* plugin queued data */
struct aqq {
audit_link_t aqq_l;
audit_rec_t *aqq_data;
uint64_t aqq_sequence;
};
/* queue head */
typedef struct auq au_queue_t;
struct auq {
void *auq_head;
void *auq_tail;
int auq_count;
pthread_mutex_t auq_lock;
};
int audit_dequeue(au_queue_t *, void **);
void audit_queue_destroy(au_queue_t *);
void audit_enqueue(au_queue_t *, void *);
int audit_queue_size(au_queue_t *);
void audit_queue_init(au_queue_t *);
audit_rec_t *audit_release(pthread_mutex_t *, audit_rec_t *);
void audit_incr_ref(pthread_mutex_t *, audit_rec_t *);
#ifdef __cplusplus
}
#endif
#endif /* _QUEUE_H */