FreeBSD/Linux Kernel Cross Reference
sys/posix4/mqueue.h
1 #ifndef _MQUEUE_H_
2 #define _MQUEUE_H_
3
4 /* mqueue.h: POSIX 1003.1b Message Queues */
5
6 /*-
7 * Copyright (c) 1996, 1997
8 * HD Associates, Inc. All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by HD Associates, Inc
21 * 4. Neither the name of the author nor the names of any co-contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL HD ASSOCIATES OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 * $FreeBSD$
38 */
39
40 #include <sys/_posix.h>
41
42 #ifdef _P1003_1B_INCLUDE_MAYBES
43 #include <sys/types.h>
44 #include <fcntl.h>
45 #include <time.h>
46 #include <signal.h>
47 #else
48 struct sigevent;
49 #endif
50
51 typedef int mqd_t; /* message queue descriptors */
52
53 struct mq_attr {
54 long mq_flags; /* message queue flags */
55 long mq_maxmsg; /* maximum number of messages */
56 long mq_msgsize; /* maximum message size */
57 long mq_curmsgs; /* number of messages currently queued */
58 };
59
60 #ifndef _KERNEL
61
62 #include <sys/cdefs.h>
63
64 __BEGIN_DECLS
65 mqd_t mq_open __P((const char *, int oflag, ...));
66 int mq_close __P((mqd_t));
67 int mq_unlink __P((const char *));
68 int mq_send __P((mqd_t, const char *, size_t, unsigned int));
69 ssize_t mq_receive __P((mqd_t, char *, size_t, unsigned int *));
70 int mq_notify __P((mqd_t, const struct sigevent *));
71 int mq_setattr __P((mqd_t, const struct mq_attr *, struct mq_attr *));
72 int mq_getattr __P((mqd_t, struct mq_attr *));
73 __END_DECLS
74
75 #endif
76
77 #endif /* _MQUEUE_H_ */
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