34 lines
966 B
C
34 lines
966 B
C
#ifndef PREFETCH_H
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#define PREFETCH_H
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#include <stdint.h>
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#include <stddef.h>
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#define PREFETCH_BUFSIZE 4096
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struct prefetch {
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/* True if there is data in the buffer. */
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int is_full;
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/* The start point of the current content of buffer */
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uint64_t from;
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/* The length of the current content of buffer */
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uint32_t len;
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/* The total size of the buffer, in bytes. */
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size_t size;
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char *buffer;
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};
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struct prefetch* prefetch_create( size_t size_bytes );
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void prefetch_destroy( struct prefetch *prefetch );
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size_t prefetch_size( struct prefetch *);
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void prefetch_set_is_empty( struct prefetch *prefetch );
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void prefetch_set_is_full( struct prefetch *prefetch );
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void prefetch_set_full( struct prefetch *prefetch, int val );
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int prefetch_is_full( struct prefetch *prefetch );
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int prefetch_contains( struct prefetch *prefetch, uint64_t from, uint32_t len );
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char *prefetch_offset( struct prefetch *prefetch, uint64_t from );
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#endif
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