61 lines
1.8 KiB
C
61 lines
1.8 KiB
C
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/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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*/
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#ifndef __MQUEUE_H__
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#define __MQUEUE_H__
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#include <sys/signal.h>
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#include <sys/time.h>
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#include <rtdef.h>
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struct mqdes
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{
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/* reference count and unlinked */
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rt_uint16_t refcount;
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rt_uint16_t unlinked;
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/* RT-Thread message queue */
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rt_mq_t mq;
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/* next posix mqueue */
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struct mqdes* next;
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};
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typedef struct mqdes* mqd_t;
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struct mq_attr
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{
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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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int mq_close(mqd_t mqdes);
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int mq_getattr(mqd_t mqdes, struct mq_attr *mqstat);
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int mq_notify(mqd_t mqdes, const struct sigevent *notification);
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mqd_t mq_open(const char *name, int oflag, ...);
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ssize_t mq_receive(mqd_t mqdes, char *msg_ptr, size_t msg_len, unsigned *msg_prio);
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int mq_send(mqd_t mqdes, const char *msg_ptr, size_t msg_len, unsigned msg_prio);
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int mq_setattr(mqd_t mqdes,
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const struct mq_attr *mqstat,
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struct mq_attr *omqstat);
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ssize_t mq_timedreceive(mqd_t mqdes,
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char *msg_ptr,
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size_t msg_len,
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unsigned *msg_prio,
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const struct timespec *abs_timeout);
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int mq_timedsend(mqd_t mqdes,
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const char *msg_ptr,
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size_t msg_len,
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unsigned msg_prio,
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const struct timespec *abs_timeout);
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int mq_unlink(const char *name);
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#endif
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