45 lines
805 B
C
45 lines
805 B
C
|
/*
|
||
|
|
* Copyright (c) 2006-2018, RT-Thread Development Team
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: Apache-2.0
|
||
|
|
*
|
||
|
|
* Change Logs:
|
||
|
|
* Date Author Notes
|
||
|
|
*/
|
||
|
|
#ifndef PIPE_H__
|
||
|
|
#define PIPE_H__
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Pipe Device
|
||
|
|
*/
|
||
|
|
#include <rtthread.h>
|
||
|
|
#include <rtdevice.h>
|
||
|
|
|
||
|
|
#ifndef RT_PIPE_BUFSZ
|
||
|
|
#define PIPE_BUFSZ 512
|
||
|
|
#else
|
||
|
|
#define PIPE_BUFSZ RT_PIPE_BUFSZ
|
||
|
|
#endif
|
||
|
|
|
||
|
|
struct rt_pipe_device
|
||
|
|
{
|
||
|
|
struct rt_device parent;
|
||
|
|
|
||
|
|
/* ring buffer in pipe device */
|
||
|
|
struct rt_ringbuffer *fifo;
|
||
|
|
rt_uint16_t bufsz;
|
||
|
|
|
||
|
|
rt_uint8_t readers;
|
||
|
|
rt_uint8_t writers;
|
||
|
|
|
||
|
|
rt_wqueue_t reader_queue;
|
||
|
|
rt_wqueue_t writer_queue;
|
||
|
|
|
||
|
|
struct rt_mutex lock;
|
||
|
|
};
|
||
|
|
typedef struct rt_pipe_device rt_pipe_t;
|
||
|
|
|
||
|
|
rt_pipe_t *rt_pipe_create(const char *name, int bufsz);
|
||
|
|
int rt_pipe_delete(const char *name);
|
||
|
|
#endif /* PIPE_H__ */
|