24 lines
600 B
C
24 lines
600 B
C
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#ifndef __SYS_BUFCACHE_H__
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#define __SYS_BUFCACHE_H__
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#include <sys/queue.h>
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typedef struct BufCacheEntry {
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Disk *disk;
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uint64_t diskOffset;
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uint64_t refCount;
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void *buffer;
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TAILQ_ENTRY(BufCacheEntry) htEntry;
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TAILQ_ENTRY(BufCacheEntry) lruEntry;
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} BufCacheEntry;
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void BufCache_Init();
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int BufCache_Alloc(Disk *disk, uint64_t diskOffset, BufCacheEntry **entry);
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void BufCache_Release(BufCacheEntry *entry);
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int BufCache_Read(Disk *disk, uint64_t diskOffset, BufCacheEntry **entry);
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int BufCache_Write(BufCacheEntry *entry);
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#endif /* __SYS_BUFCACHE_H__ */
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