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/* libc/sys/linux/include/mqueue.h - message queue functions */
/* Copyright 2002, Red Hat Inc. - all rights reserved */
#ifndef __MQUEUE_H
#define __MQUEUE_H
#include <sys/types.h>
#define __need_sigevent_t 1
#include <bits/siginfo.h>
/* message queue types */
typedef int mqd_t;
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 */
};
#define MQ_PRIO_MAX 16
/* prototypes */
mqd_t mq_open (const char *__name, int __oflag, ...);
int mq_close (mqd_t __msgid);
int mq_send (mqd_t __msgid, const char *__msg, size_t __msg_len, unsigned int __msg_prio);
ssize_t mq_receive (mqd_t __msgid, char *__msg, size_t __msg_len, unsigned int *__msg_prio);
int mq_notify (mqd_t __msgid, const struct sigevent *__notification);
int mq_unlink (const char *__name);
int mq_getattr (mqd_t __msgid, struct mq_attr *__mqstat);
int mq_setattr (mqd_t __msgid, const struct mq_attr *__mqstat, struct mq_attr *__omqattr);
#endif /* __MQUEUE_H */
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