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We temporarily need a BeOS compatible cache implementation.

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7830 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2004-06-08 05:59:53 +00:00
parent 69debf9e84
commit 56b4e8289c
1 changed files with 50 additions and 0 deletions
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50
headers/private/kernel/cache.h Normal file
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/*
Copyright 1999-2001, Be Incorporated. All Rights Reserved.
This file may be used under the terms of the Be Sample Code License.
*/
#ifndef _CACHE_H_
#define _CACHE_H_
#include <OS.h>
#define ALLOW_WRITES 1
#define NO_WRITES 0
#ifdef __cplusplus
extern "C" {
#endif
extern int init_block_cache(int max_blocks, int flags);
extern void shutdown_block_cache(void);
extern void force_cache_flush(int dev, int prefer_log_blocks);
extern int flush_blocks(int dev, off_t bnum, int nblocks);
extern int flush_device(int dev, int warn_locked);
extern int init_cache_for_device(int fd, off_t max_blocks);
extern int remove_cached_device_blocks(int dev, int allow_write);
extern void *get_block(int dev, off_t bnum, int bsize);
extern void *get_empty_block(int dev, off_t bnum, int bsize);
extern int release_block(int dev, off_t bnum);
extern int mark_blocks_dirty(int dev, off_t bnum, int nblocks);
extern int cached_read(int dev, off_t bnum, void *data, off_t num_blocks, int bsize);
extern int cached_write(int dev, off_t bnum, const void *data,
off_t num_blocks, int bsize);
extern int cached_write_locked(int dev, off_t bnum, const void *data,
off_t num_blocks, int bsize);
extern int set_blocks_info(int dev, off_t *blocks, int nblocks,
void (*func)(off_t bnum, size_t nblocks, void *arg),
void *arg);
extern size_t read_phys_blocks(int fd, off_t bnum, void *data, uint num_blocks, int bsize);
extern size_t write_phys_blocks(int fd, off_t bnum, void *data, uint num_blocks, int bsize);
#ifdef __cplusplus
}
#endif
#endif /* _CACHE_H_ */