29 lines
868 B
C
29 lines
868 B
C
/*
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* cirbuff.h - 环形缓冲区的实现的外部声明
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*
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* 采用记录读写位置的方法实现，没有做线程安全处理。
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*/
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#include <stdint.h>
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typedef void * cirbuff_handle;
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// 对循环缓冲区的操作
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cirbuff_handle cirbuff_creat(uint32_t size);
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uint32_t cirbuff_write(cirbuff_handle cbuff_h,
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uint8_t *indata, uint32_t inlen, uint8_t be_cover);
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uint32_t cirbuff_read(cirbuff_handle cbuff_h,
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uint8_t *outdata, uint32_t outlen, uint8_t beclear);
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void cirbuff_revert(cirbuff_handle cbuff_h);
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void cirbuff_destroy(cirbuff_handle cbuff_h);
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// 对循环缓冲区的查询
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uint32_t cirbuff_be_empty(cirbuff_handle cbuff_h);
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uint32_t cirbuff_be_full(cirbuff_handle cbuff_h);
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uint32_t cirbuff_data_num(cirbuff_handle cbuff_h);
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uint32_t cirbuff_free_num(cirbuff_handle cbuff_h);
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uint32_t cirbuff_be_update(cirbuff_handle cbuff_h);
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