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37 lines
1.8 KiB
C
37 lines
1.8 KiB
C
#ifndef _KERNEL_LIBK_RINGBUFFER_H
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#define _KERNEL_LIBK_RINGBUFFER_H
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#include <libk/std.h>
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struct ringbuffer {
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void* buffer;
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size_t tail;
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size_t head;
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size_t capacity;
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size_t count;
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bool full;
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};
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bool ringbuffer_init (struct ringbuffer* rb, size_t capacity, size_t type_size);
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void ringbuffer_fini (struct ringbuffer* rb);
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#define ringbuffer_pop(type, rb, data) \
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do { \
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if ((rb)->count != 0) { \
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*(data) = ((type*)(rb)->buffer)[(rb)->tail]; \
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(rb)->tail = ((rb)->tail + 1) % (rb)->capacity; \
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(rb)->count--; \
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} \
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} while (0)
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#define ringbuffer_push(type, rb, data) \
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do { \
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if ((rb)->count != (rb)->capacity) { \
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((type*)(rb)->buffer)[(rb)->head] = (data); \
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(rb)->head = ((rb)->head + 1) % (rb)->capacity; \
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(rb)->count++; \
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} \
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} while (0)
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#endif // _KERNEL_LIBK_RINGBUFFER_H
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