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/*
* CDDL HEADER START
*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2014, 2018 by Delphix. All rights reserved.
*/
#ifndef _BQUEUE_H
#define _BQUEUE_H
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/zfs_context.h>
typedef struct bqueue {
list_t bq_list;
size_t bq_size;
list_t bq_dequeuing_list;
size_t bq_dequeuing_size;
list_t bq_enqueuing_list;
size_t bq_enqueuing_size;
kmutex_t bq_lock;
kcondvar_t bq_add_cv;
kcondvar_t bq_pop_cv;
size_t bq_maxsize;
uint_t bq_fill_fraction;
size_t bq_node_offset;
} bqueue_t;
typedef struct bqueue_node {
list_node_t bqn_node;
size_t bqn_size;
} bqueue_node_t;
int bqueue_init(bqueue_t *, uint_t, size_t, size_t);
void bqueue_destroy(bqueue_t *);
void bqueue_enqueue(bqueue_t *, void *, size_t);
void bqueue_enqueue_flush(bqueue_t *, void *, size_t);
void *bqueue_dequeue(bqueue_t *);
#ifdef __cplusplus
}
#endif
#endif /* _BQUEUE_H */
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