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freebsd/sys/posix4/mqueue.h
Peter Wemm c447342094 Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"
is an application space macro and the applications are supposed to be free
to use it as they please (but cannot).  This is consistant with the other
BSD's who made this change quite some time ago.  More commits to come.
1999-12-29 05:07:58 +00:00

78 lines
2.8 KiB
C

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