xiuos/applications/user_api/posix_support/include/mqueue.h

58 lines
1.8 KiB
C

/*
* Copyright (c) 2020 AIIT XUOS Lab
* XiUOS is licensed under Mulan PSL v2.
* You can use this software according to the terms and conditions of the Mulan PSL v2.
* You may obtain a copy of Mulan PSL v2 at:
* http://license.coscl.org.cn/MulanPSL2
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PSL v2 for more details.
*/
/**
* @file: msgqueue.h
* @brief: the function definition of posix msg queue
* @version: 1.0
* @author: AIIT XUOS Lab
* @date: 2020/4/20
*
*/
#ifndef MQUEUE_H
#define MQUEUE_H
#ifdef __cplusplus
extern "C" {
#endif
#include "../../switch_api/user_api.h"
#include <time.h>
#define DEFAULT_MQUEUE_SIZE (10 * 1024)
#define DEFAULT_MAX_MSG_SIZE (1024)
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 */
};
mqd_t mq_open(const char *name, int oflag, ...);
int mq_close(mqd_t mqdes);
ssize_t mq_receive(mqd_t mqdes, char *msg_ptr, size_t msg_len, unsigned *msg_prio);
int mq_send(mqd_t mqdes, const char *msg_ptr, size_t msg_len, unsigned msg_prio);
int mq_setattr(mqd_t mqdes, const struct mq_attr *mqstat, struct mq_attr *omqstat);
int mq_getattr(mqd_t mqdes, struct mq_attr *mqstat);
ssize_t mq_timedreceive(mqd_t mqdes, char *msg_ptr, size_t msg_len, unsigned *msg_prio, const struct timespec *abs_timeout);
int mq_timedsend(mqd_t mqdes, const char *msg_ptr, size_t msg_len, unsigned msg_prio, const struct timespec *abs_timeout);
int mq_unlink(const char *name);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif