1/*
2 * Copyright (c) 2004-2016 Maxim Sobolev <sobomax@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29struct mkuz_fifo_queue {
30    pthread_mutex_t mtx;
31    pthread_cond_t cvar;
32    struct mkuz_bchain_link *first;
33    struct mkuz_bchain_link *last;
34    int length;
35    int wakeup_len;
36};
37
38struct mkuz_blk;
39struct mkuz_bchain_link;
40
41DEFINE_RAW_METHOD(cmp_cb, int, const struct mkuz_blk *, void *);
42
43struct mkuz_fifo_queue *mkuz_fqueue_ctor(int);
44void mkuz_fqueue_enq(struct mkuz_fifo_queue *, struct mkuz_blk *);
45struct mkuz_blk *mkuz_fqueue_deq(struct mkuz_fifo_queue *);
46struct mkuz_blk *mkuz_fqueue_deq_when(struct mkuz_fifo_queue *, cmp_cb_t, void *);
47#if defined(NOTYET)
48struct mkuz_bchain_link *mkuz_fqueue_deq_all(struct mkuz_fifo_queue *, int *);
49int mkuz_fqueue_enq_all(struct mkuz_fifo_queue *, struct mkuz_bchain_link *,
50  struct mkuz_bchain_link *, int);
51#endif
52