1 // SPDX-License-Identifier: CDDL-1.0 2 /* 3 * CDDL HEADER START 4 * 5 * This file and its contents are supplied under the terms of the 6 * Common Development and Distribution License ("CDDL"), version 1.0. 7 * You may only use this file in accordance with the terms of version 8 * 1.0 of the CDDL. 9 * 10 * A full copy of the text of the CDDL should have accompanied this 11 * source. A copy of the CDDL is also available via the Internet at 12 * http://www.illumos.org/license/CDDL. 13 * 14 * CDDL HEADER END 15 */ 16 /* 17 * Copyright (c) 2014, 2018 by Delphix. All rights reserved. 18 */ 19 20 #ifndef _BQUEUE_H 21 #define _BQUEUE_H 22 23 #ifdef __cplusplus 24 extern "C" { 25 #endif 26 27 #include <sys/zfs_context.h> 28 29 typedef struct bqueue { 30 list_t bq_list; 31 size_t bq_size; 32 list_t bq_dequeuing_list; 33 size_t bq_dequeuing_size; 34 list_t bq_enqueuing_list; 35 size_t bq_enqueuing_size; 36 kmutex_t bq_lock; 37 kcondvar_t bq_add_cv; 38 kcondvar_t bq_pop_cv; 39 size_t bq_maxsize; 40 uint_t bq_fill_fraction; 41 size_t bq_node_offset; 42 } bqueue_t; 43 44 typedef struct bqueue_node { 45 list_node_t bqn_node; 46 size_t bqn_size; 47 } bqueue_node_t; 48 49 50 int bqueue_init(bqueue_t *, uint_t, size_t, size_t); 51 void bqueue_destroy(bqueue_t *); 52 void bqueue_enqueue(bqueue_t *, void *, size_t); 53 void bqueue_enqueue_flush(bqueue_t *, void *, size_t); 54 void *bqueue_dequeue(bqueue_t *); 55 56 #ifdef __cplusplus 57 } 58 #endif 59 60 #endif /* _BQUEUE_H */ 61