kernel - reduces kern.maxvnodes on machines with less memory
[dragonfly.git] / include / mqueue.h
blobbf2f32be497f597731524b98ebe7e19e56b02f27
1 /* $NetBSD: mqueue.h,v 1.4 2009/01/11 03:04:12 christos Exp $ */
3 /*
4 * Copyright (c) 2007, Mindaugas Rasiukevicius <rmind at NetBSD org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
29 #ifndef _MQUEUE_H_
30 #define _MQUEUE_H_
32 #include <fcntl.h>
33 #include <signal.h>
34 #include <time.h>
36 #include <sys/cdefs.h>
37 #include <sys/types.h>
39 #include <sys/mqueue.h>
41 __BEGIN_DECLS
42 int mq_close(mqd_t);
43 int mq_getattr(mqd_t, struct mq_attr *);
44 int mq_notify(mqd_t, const struct sigevent *);
45 mqd_t mq_open(const char *, int, ...);
46 ssize_t mq_receive(mqd_t, char *, size_t, unsigned *);
47 int mq_send(mqd_t, const char *, size_t, unsigned);
48 int mq_setattr(mqd_t, const struct mq_attr * __restrict,
49 struct mq_attr * __restrict);
50 ssize_t mq_timedreceive(mqd_t, char * __restrict, size_t,
51 unsigned * __restrict, const struct timespec * __restrict);
52 int mq_timedsend(mqd_t, const char *, size_t, unsigned,
53 const struct timespec *);
54 int mq_unlink(const char *);
55 __END_DECLS
57 #endif /* _MQUEUE_H_ */