111 lines
2.9 KiB
C
111 lines
2.9 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2006-2023, RT-Thread Development Team
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: Apache-2.0
|
||
|
|
*
|
||
|
|
* Change Logs:
|
||
|
|
* Date Author Notes
|
||
|
|
* 2018-08-25 armink the first version
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _RINGBLK_BUF_H_
|
||
|
|
#define _RINGBLK_BUF_H_
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Introduction:
|
||
|
|
* The rbb is the ring buffer which is composed with many blocks. It is different from the ring buffer.
|
||
|
|
* The ring buffer is only composed with chars. The rbb put and get supported zero copies. So the rbb
|
||
|
|
* is very suitable for put block and get block by a certain order. Such as DMA block transmit,
|
||
|
|
* communicate frame send/recv, and so on.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
enum rt_rbb_status
|
||
|
|
{
|
||
|
|
/* unused status when first initialize or after blk_free() */
|
||
|
|
RT_RBB_BLK_UNUSED,
|
||
|
|
/* initialized status after blk_alloc() */
|
||
|
|
RT_RBB_BLK_INITED,
|
||
|
|
/* put status after blk_put() */
|
||
|
|
RT_RBB_BLK_PUT,
|
||
|
|
/* get status after blk_get() */
|
||
|
|
RT_RBB_BLK_GET,
|
||
|
|
};
|
||
|
|
typedef enum rt_rbb_status rt_rbb_status_t;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* the block of rbb
|
||
|
|
*/
|
||
|
|
struct rt_rbb_blk
|
||
|
|
{
|
||
|
|
rt_rbb_status_t status :8;
|
||
|
|
/* less then 2^24 */
|
||
|
|
rt_size_t size :24;
|
||
|
|
rt_uint8_t *buf;
|
||
|
|
rt_slist_t list;
|
||
|
|
};
|
||
|
|
typedef struct rt_rbb_blk *rt_rbb_blk_t;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Rbb block queue: the blocks (from block1->buf to blockn->buf) memory which on this queue is continuous.
|
||
|
|
*/
|
||
|
|
struct rt_rbb_blk_queue
|
||
|
|
{
|
||
|
|
rt_rbb_blk_t blocks;
|
||
|
|
rt_size_t blk_num;
|
||
|
|
};
|
||
|
|
typedef struct rt_rbb_blk_queue *rt_rbb_blk_queue_t;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* ring block buffer
|
||
|
|
*/
|
||
|
|
struct rt_rbb
|
||
|
|
{
|
||
|
|
rt_uint8_t *buf;
|
||
|
|
rt_size_t buf_size;
|
||
|
|
/* all of blocks */
|
||
|
|
rt_rbb_blk_t blk_set;
|
||
|
|
rt_size_t blk_max_num;
|
||
|
|
/* saved the initialized and put status blocks */
|
||
|
|
rt_slist_t blk_list;
|
||
|
|
/* point to tail node */
|
||
|
|
rt_slist_t *tail;
|
||
|
|
/* free node list */
|
||
|
|
rt_slist_t free_list;
|
||
|
|
};
|
||
|
|
typedef struct rt_rbb *rt_rbb_t;
|
||
|
|
|
||
|
|
/* rbb (ring block buffer) API */
|
||
|
|
void rt_rbb_init(rt_rbb_t rbb, rt_uint8_t *buf, rt_size_t buf_size, rt_rbb_blk_t block_set, rt_size_t blk_max_num);
|
||
|
|
rt_size_t rt_rbb_get_buf_size(rt_rbb_t rbb);
|
||
|
|
|
||
|
|
#ifdef RT_USING_HEAP
|
||
|
|
rt_rbb_t rt_rbb_create(rt_size_t buf_size, rt_size_t blk_max_num);
|
||
|
|
void rt_rbb_destroy(rt_rbb_t rbb);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* rbb block API */
|
||
|
|
rt_rbb_blk_t rt_rbb_blk_alloc(rt_rbb_t rbb, rt_size_t blk_size);
|
||
|
|
void rt_rbb_blk_put(rt_rbb_blk_t block);
|
||
|
|
rt_rbb_blk_t rt_rbb_blk_get(rt_rbb_t rbb);
|
||
|
|
rt_size_t rt_rbb_blk_size(rt_rbb_blk_t block);
|
||
|
|
rt_uint8_t *rt_rbb_blk_buf(rt_rbb_blk_t block);
|
||
|
|
void rt_rbb_blk_free(rt_rbb_t rbb, rt_rbb_blk_t block);
|
||
|
|
|
||
|
|
/* rbb block queue API */
|
||
|
|
rt_size_t rt_rbb_blk_queue_get(rt_rbb_t rbb, rt_size_t queue_data_len, rt_rbb_blk_queue_t blk_queue);
|
||
|
|
rt_size_t rt_rbb_blk_queue_len(rt_rbb_blk_queue_t blk_queue);
|
||
|
|
rt_uint8_t *rt_rbb_blk_queue_buf(rt_rbb_blk_queue_t blk_queue);
|
||
|
|
void rt_rbb_blk_queue_free(rt_rbb_t rbb, rt_rbb_blk_queue_t blk_queue);
|
||
|
|
rt_size_t rt_rbb_next_blk_queue_len(rt_rbb_t rbb);
|
||
|
|
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* _RINGBLK_BUF_H_ */
|