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: src/sys/posix4/mqueue.h,v 1.4 1999/12/29 04:55:02 peter Exp $ 38 * $DragonFly: src/sys/sys/mqueue.h,v 1.3 2003/08/27 06:30:04 rob Exp $ 39 */ 40 41 #include <sys/_posix.h> 42 43 #ifdef _P1003_1B_INCLUDE_MAYBES 44 #include <sys/types.h> 45 #include <fcntl.h> 46 #include <time.h> 47 #include <signal.h> 48 #else 49 struct sigevent; 50 #endif 51 52 typedef int mqd_t; /* message queue descriptors */ 53 54 struct mq_attr { 55 long mq_flags; /* message queue flags */ 56 long mq_maxmsg; /* maximum number of messages */ 57 long mq_msgsize; /* maximum message size */ 58 long mq_curmsgs; /* number of messages currently queued */ 59 }; 60 61 #ifndef _KERNEL 62 63 #include <sys/cdefs.h> 64 65 __BEGIN_DECLS 66 mqd_t mq_open (const char *, int oflag, ...); 67 int mq_close (mqd_t); 68 int mq_unlink (const char *); 69 int mq_send (mqd_t, const char *, size_t, unsigned int); 70 ssize_t mq_receive (mqd_t, char *, size_t, unsigned int *); 71 int mq_notify (mqd_t, const struct sigevent *); 72 int mq_setattr (mqd_t, const struct mq_attr *, struct mq_attr *); 73 int mq_getattr (mqd_t, struct mq_attr *); 74 __END_DECLS 75 76 #endif 77 78 #endif /* _MQUEUE_H_ */ 79