Fumofumotris/source/fumoengine/include/ringbuffer.h

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#pragma once
#include <iso646.h>
#include <stdbool.h>
#include <stdint.h>
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#include "fumocommon.h"
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typedef const struct RingBufferT {
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size_t OFFSET;
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size_t SIZE;
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size_t LEN;
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} *const RingBufferT;
struct RingBufferHead {
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size_t len;
size_t start;
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};
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#define RINGBUF_T_INIT(RBUF_STRUCT, RBUF_ITEM, RBUF_LEN) \
(&(struct RingBufferT) { \
.OFFSET = offsetof(RBUF_STRUCT, buf), \
.SIZE = sizeof(RBUF_ITEM), \
.LEN = RBUF_LEN \
}) \
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#define RINGBUF_HEAD_INIT ((struct RingBufferHead) { 0, 0 })
size_t RingBufferEmpty(RingBufferT T, struct RingBufferHead *head);
void *RingBufferGet(
RingBufferT T,
struct RingBufferHead *head,
size_t i
);
void *RingBufferNext(RingBufferT T, struct RingBufferHead *head);
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void RingBufferAdd(RingBufferT T, struct RingBufferHead *dest, void *item);
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void RingBufferTransfer(
RingBufferT T,
struct RingBufferHead *dest,
struct RingBufferHead *tmp
);
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size_t RingBufferOut(
RingBufferT T,
size_t n,
void *dest,
struct RingBufferHead *src
);