forked from lolo859/vystem
21 lines
901 B
C
21 lines
901 B
C
// SPDX-License-Identifier: MPL-2.0
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#ifndef SH_LIB_RING_H
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#define SH_LIB_RING_H
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#include "std/type.h"
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#include "std/status.h"
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// Ring buffer header structure
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typedef struct {
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sh_uint32 head;
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sh_uint32 tail;
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sh_uint32 buffer_bytes_size;
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sh_uint8* data_start;
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sh_uint64 total_bytes_written;
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} sh_ring_RING_BUFFER_HEADER;
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// Write a byte into the provided ring buffer
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SH_STATUS sh_ring_write_byte(sh_ring_RING_BUFFER_HEADER *ring_buffer,sh_uint8 byte);
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// Write a null terminated string into the provided ring buffer
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SH_STATUS sh_ring_write_string(sh_ring_RING_BUFFER_HEADER *ring_buffer,char *string);
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// Read bytes_count from the provided ring buffer, and put it into output. Return SH_STATUS_TOO_MUCH_DATA if bytes_count>buf.buffer_size_bytes, setting the entire buffer to 0x00
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SH_STATUS sh_ring_read_bytes(sh_ring_RING_BUFFER_HEADER *ring_buffer,sh_uint32 bytes_count,void *output);
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#endif
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