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74 lines
3.5 KiB
C
74 lines
3.5 KiB
C
/******************************************************************************
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* file include/fifo.h
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* author YuLiang
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* version 1.0.0
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* date 21-Feb-2023
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* brief This file provides all the headers of the fifo functions.
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******************************************************************************
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* Attention
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*
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* <h2><center>© COPYRIGHT(c) 2021 LandPower</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of LandPower nor the names of its contributors may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************/
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#ifndef _FIFO_H_
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#define _FIFO_H_
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/* Includes ------------------------------------------------------------------*/
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#include <semaphore.h>
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/* Define --------------------------------------------------------------------*/
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#define FIFO_NAME_LEN 32
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/* Exported types ------------------------------------------------------------*/
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/* . */
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typedef struct _fifo_t
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{
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char name[FIFO_NAME_LEN]; // fifo 名字.
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uint32_t size; // fifo 大小.
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uint32_t cur; // 当前的数据位置.
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uint32_t valid; // 当前读取的数据位置.
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uint32_t used; // fifo 使用数量.
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uint32_t max; // fifo 最大使用数量.
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pthread_mutex_t mutex; // 多线程同时操作的信号量.
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sem_t sem; // 读取有效互斥锁.
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void **data; // 数据数组.
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} fifo_t;
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/* Exported macro ------------------------------------------------------------*/
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/* Extern global variables ---------------------------------------------------*/
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/* Extern functions ----------------------------------------------------------*/
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extern int32_t fifo_init(void);
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extern int32_t fifo_create(char* name, uint32_t size);
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extern int32_t fifo_write(uint32_t id, void *data, int32_t len);
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extern int32_t fifo_read(uint32_t id, void **data);
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extern int32_t fifo_push(uint32_t id);
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extern void fifo_show(uint32_t id);
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#endif
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/************************ (C) COPYRIGHT LandPower ***** END OF FILE ****************/
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