You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
51 lines
1.2 KiB
51 lines
1.2 KiB
/*
|
|
* Copyright (c) 2006-2023, RT-Thread Development Team
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
*/
|
|
|
|
#ifndef PIPE_H__
|
|
#define PIPE_H__
|
|
|
|
#include <rtdef.h>
|
|
#include <rtconfig.h>
|
|
#include "condvar.h"
|
|
|
|
/**
|
|
* Pipe Device
|
|
*/
|
|
|
|
struct rt_pipe_device
|
|
{
|
|
struct rt_device parent;
|
|
rt_bool_t is_named;
|
|
#ifdef RT_USING_POSIX_DEVIO
|
|
int pipeno; /* for unamed pipe */
|
|
#endif
|
|
|
|
/* ring buffer in pipe device */
|
|
struct rt_ringbuffer *fifo;
|
|
rt_uint16_t bufsz;
|
|
|
|
rt_wqueue_t reader_queue;
|
|
rt_wqueue_t writer_queue;
|
|
int writer;
|
|
int reader;
|
|
|
|
struct rt_condvar waitfor_parter;
|
|
struct rt_mutex lock;
|
|
};
|
|
typedef struct rt_pipe_device rt_pipe_t;
|
|
|
|
rt_pipe_t *rt_pipe_create(const char *name, int bufsz);
|
|
rt_err_t rt_pipe_open(rt_device_t device, rt_uint16_t oflag);
|
|
rt_ssize_t rt_pipe_read(rt_device_t device, rt_off_t pos, void *buffer, rt_size_t count);
|
|
rt_ssize_t rt_pipe_write(rt_device_t device, rt_off_t pos, const void *buffer, rt_size_t count);
|
|
rt_err_t rt_pipe_control(rt_device_t dev, int cmd, void *args);
|
|
rt_err_t rt_pipe_close(rt_device_t device);
|
|
int rt_pipe_delete(const char *name);
|
|
|
|
#endif /* PIPE_H__ */
|
|
|