mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-16 01:50:11 +00:00
101 lines
3.7 KiB
C
101 lines
3.7 KiB
C
/* Copyright (C) 2004-2016 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _MQUEUE_H
|
|
#define _MQUEUE_H 1
|
|
|
|
#include <features.h>
|
|
#include <sys/types.h>
|
|
#include <fcntl.h>
|
|
#define __need_sigevent_t
|
|
#include <bits/siginfo.h>
|
|
#define __need_timespec
|
|
#include <time.h>
|
|
/* Get the definition of mqd_t and struct mq_attr. */
|
|
#include <bits/mqueue.h>
|
|
|
|
__BEGIN_DECLS
|
|
|
|
/* Establish connection between a process and a message queue NAME and
|
|
return message queue descriptor or (mqd_t) -1 on error. OFLAG determines
|
|
the type of access used. If O_CREAT is on OFLAG, the third argument is
|
|
taken as a `mode_t', the mode of the created message queue, and the fourth
|
|
argument is taken as `struct mq_attr *', pointer to message queue
|
|
attributes. If the fourth argument is NULL, default attributes are
|
|
used. */
|
|
extern mqd_t mq_open (const char *__name, int __oflag, ...)
|
|
__THROW __nonnull ((1));
|
|
|
|
/* Removes the association between message queue descriptor MQDES and its
|
|
message queue. */
|
|
extern int mq_close (mqd_t __mqdes) __THROW;
|
|
|
|
/* Query status and attributes of message queue MQDES. */
|
|
extern int mq_getattr (mqd_t __mqdes, struct mq_attr *__mqstat)
|
|
__THROW __nonnull ((2));
|
|
|
|
/* Set attributes associated with message queue MQDES and if OMQSTAT is
|
|
not NULL also query its old attributes. */
|
|
extern int mq_setattr (mqd_t __mqdes,
|
|
const struct mq_attr *__restrict __mqstat,
|
|
struct mq_attr *__restrict __omqstat)
|
|
__THROW __nonnull ((2));
|
|
|
|
/* Remove message queue named NAME. */
|
|
extern int mq_unlink (const char *__name) __THROW __nonnull ((1));
|
|
|
|
/* Register notification issued upon message arrival to an empty
|
|
message queue MQDES. */
|
|
extern int mq_notify (mqd_t __mqdes, const struct sigevent *__notification)
|
|
__THROW;
|
|
|
|
/* Receive the oldest from highest priority messages in message queue
|
|
MQDES. */
|
|
extern ssize_t mq_receive (mqd_t __mqdes, char *__msg_ptr, size_t __msg_len,
|
|
unsigned int *__msg_prio) __nonnull ((2));
|
|
|
|
/* Add message pointed by MSG_PTR to message queue MQDES. */
|
|
extern int mq_send (mqd_t __mqdes, const char *__msg_ptr, size_t __msg_len,
|
|
unsigned int __msg_prio) __nonnull ((2));
|
|
|
|
#ifdef __USE_XOPEN2K
|
|
/* Receive the oldest from highest priority messages in message queue
|
|
MQDES, stop waiting if ABS_TIMEOUT expires. */
|
|
extern ssize_t mq_timedreceive (mqd_t __mqdes, char *__restrict __msg_ptr,
|
|
size_t __msg_len,
|
|
unsigned int *__restrict __msg_prio,
|
|
const struct timespec *__restrict __abs_timeout)
|
|
__nonnull ((2, 5));
|
|
|
|
/* Add message pointed by MSG_PTR to message queue MQDES, stop blocking
|
|
on full message queue if ABS_TIMEOUT expires. */
|
|
extern int mq_timedsend (mqd_t __mqdes, const char *__msg_ptr,
|
|
size_t __msg_len, unsigned int __msg_prio,
|
|
const struct timespec *__abs_timeout)
|
|
__nonnull ((2, 5));
|
|
#endif
|
|
|
|
/* Define some inlines helping to catch common problems. */
|
|
#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function \
|
|
&& defined __va_arg_pack_len
|
|
# include <bits/mqueue2.h>
|
|
#endif
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* mqueue.h */
|