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kernel: POSIX: Compatibility layer for POSIX message queue APIs.

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This patch provides POSIX message queue APIs for POSIX
1003.1 PSE52 standard.

Signed-off-by: Youvedeep Singh <youvedeep.singh@intel.com>
This commit is contained in:
Youvedeep Singh 2018-03-19 20:45:27 +05:30 • committed by Anas Nashif
commit 4a8b2d2d2f
5 changed files with 552 additions and 1 deletions
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66
include/posix/mqueue.h Normal file
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/*
* Copyright (c) 2018 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef __MQUEUE_H__
#define __MQUEUE_H__
#include <kernel.h>
#include <time.h>
#include "sys/types.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef void *mqd_t;
typedef unsigned int mode_t;
typedef struct mq_attr {
long mq_flags;
long mq_maxmsg;
long mq_msgsize;
long mq_curmsgs; /* Number of messages currently queued. */
} mq_attr;
/* FIXME: below should be defined into fcntl.h file.
* This is temporarily put here.
*/
#ifndef _SYS_FCNTL_H_
#define O_CREAT_POS 9
#define O_CREAT (1 << O_CREAT_POS)
#define O_EXCL_POS 11
#define O_EXCL (1 << O_EXCL_POS)
#define O_NONBLOCK_POS 14
#define O_NONBLOCK (1 << O_NONBLOCK_POS)
#define O_RDONLY 0
#define O_WRONLY 1
#define O_RDWR 2
#endif /* _SYS_FCNTL_H_ */
mqd_t mq_open(const char *name, int oflags, ...);
int mq_close(mqd_t mqdes);
int mq_unlink(const char *name);
int mq_getattr(mqd_t mqdes, struct mq_attr *mqstat);
int mq_receive(mqd_t mqdes, char *msg_ptr, size_t msg_len,
unsigned int *msg_prio);
int mq_send(mqd_t mqdes, const char *msg_ptr, size_t msg_len,
unsigned int msg_prio);
int mq_setattr(mqd_t mqdes, const struct mq_attr *mqstat,
struct mq_attr *omqstat);
int mq_timedreceive(mqd_t mqdes, char *msg_ptr, size_t msg_len,
unsigned int *msg_prio, const struct timespec *abstime);
int mq_timedsend(mqd_t mqdes, const char *msg_ptr, size_t msg_len,
unsigned int msg_prio, const struct timespec *abstime);
#ifdef __cplusplus
}
#endif
#endif /* __MQUEUE_H__ */