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aac4ad2c99
Changes to support building with _POSIX_SOURCE set to 199309L: 1. Add sys/_posix.h to handle those preprocessor defs that POSIX says have effects when defined before including any header files; 2. Change POSIX4_VISIBLE back to _POSIX4_VISIBLE 3. Add _POSIX4_VISIBLE_HISTORICALLY for pre-existing BSD features now defined in POSIX. These show up when: _POSIX_SOURCE and _POSIX_C_SOURCE are not set or _POSIX_C_SOURCE is set >= 199309L and vanish when: _POSIX_SOURCE is set or _POSIX_C_SOURCE is < 199309L. 4. Explain these in man 9 posix4; 5. Include _posix.h and conditionalize on new feature test.
75 lines
2.7 KiB
C
75 lines
2.7 KiB
C
#ifndef _MQUEUE_H_
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#define _MQUEUE_H_
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/* mqueue.h: POSIX.4 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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*/
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#ifdef _POSIX4_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 __P((const char *, int oflag, ...));
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int mq_close __P((mqd_t));
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int mq_unlink __P((const char *));
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int mq_send __P((mqd_t, const char *, size_t, unsigned int));
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ssize_t mq_receive __P((mqd_t, char *, size_t, unsigned int *));
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int mq_notify __P((mqd_t, const struct sigevent *));
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int mq_setattr __P((mqd_t, const struct mq_attr *, struct mq_attr *));
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int mq_getattr __P((mqd_t, struct mq_attr *));
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__END_DECLS
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#endif /* KERNEL */
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#endif /* _MQUEUE_H_ */
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