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78 lines
2.7 KiB
C
78 lines
2.7 KiB
C
#ifndef _MQUEUE_H_
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#define _MQUEUE_H_
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/* mqueue.h: POSIX 1003.1b Message Queues */
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/*-
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* Copyright (c) 1996, 1997
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* HD Associates, Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by HD Associates, Inc
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL HD ASSOCIATES OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/_posix.h>
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#ifdef _P1003_1B_INCLUDE_MAYBES
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#include <sys/types.h>
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#include <fcntl.h>
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#include <time.h>
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#include <signal.h>
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#else
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struct sigevent;
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#endif
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typedef int mqd_t; /* message queue descriptors */
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struct mq_attr {
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long mq_flags; /* message queue flags */
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long mq_maxmsg; /* maximum number of messages */
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long mq_msgsize; /* maximum message size */
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long mq_curmsgs; /* number of messages currently queued */
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};
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#ifndef _KERNEL
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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mqd_t mq_open(const char *, int oflag, ...);
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int mq_close(mqd_t);
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int mq_unlink(const char *);
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int mq_send(mqd_t, const char *, size_t, unsigned int);
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ssize_t mq_receive(mqd_t, char *, size_t, unsigned int *);
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int mq_notify(mqd_t, const struct sigevent *);
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int mq_setattr(mqd_t, const struct mq_attr *, struct mq_attr *);
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int mq_getattr(mqd_t, struct mq_attr *);
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__END_DECLS
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#endif
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#endif /* _MQUEUE_H_ */
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