/* File System File and Block Caches * * Copyright 2004-2005, Haiku Inc. All Rights Reserved. * Distributed under the terms of the MIT License. */ #ifndef _FS_CACHE_H #define _FS_CACHE_H #include typedef void (*transaction_notification_hook)(int32 id, void *data); #ifdef __cplusplus extern "C" { #endif /* transactions */ extern int32 cache_start_transaction(void *_cache); extern status_t cache_sync_transaction(void *_cache, int32 id); extern status_t cache_end_transaction(void *_cache, int32 id, transaction_notification_hook hook, void *data); extern status_t cache_abort_transaction(void *_cache, int32 id); extern int32 cache_detach_sub_transaction(void *_cache, int32 id, transaction_notification_hook hook, void *data); extern status_t cache_abort_sub_transaction(void *_cache, int32 id); extern status_t cache_start_sub_transaction(void *_cache, int32 id); extern status_t cache_next_block_in_transaction(void *_cache, int32 id, uint32 *_cookie, off_t *_blockNumber, void **_data, void **_unchangedData); extern int32 cache_blocks_in_transaction(void *_cache, int32 id); extern int32 cache_blocks_in_sub_transaction(void *_cache, int32 id); /* block cache */ extern void block_cache_delete(void *_cache, bool allowWrites); extern void *block_cache_create(int fd, off_t numBlocks, size_t blockSize, bool readOnly); extern status_t block_cache_sync(void *_cache); extern status_t block_cache_make_writable(void *_cache, off_t blockNumber, int32 transaction); extern void *block_cache_get_writable_etc(void *_cache, off_t blockNumber, off_t base, off_t length, int32 transaction); extern void *block_cache_get_writable(void *_cache, off_t blockNumber, int32 transaction); extern void *block_cache_get_empty(void *_cache, off_t blockNumber, int32 transaction); extern const void *block_cache_get_etc(void *_cache, off_t blockNumber, off_t base, off_t length); extern const void *block_cache_get(void *_cache, off_t blockNumber); extern status_t block_cache_set_dirty(void *_cache, off_t blockNumber, bool isDirty, int32 transaction); extern void block_cache_put(void *_cache, off_t blockNumber); /* file cache */ extern void *file_cache_create(mount_id mountID, vnode_id vnodeID, off_t size, int fd); extern void file_cache_delete(void *_cacheRef); extern status_t file_cache_set_size(void *_cacheRef, off_t size); extern status_t file_cache_sync(void *_cache); extern status_t file_cache_invalidate_file_map(void *_cacheRef, off_t offset, off_t size); extern status_t file_cache_read_pages(void *_cacheRef, off_t offset, const iovec *vecs, size_t count, size_t *_numBytes); extern status_t file_cache_write_pages(void *_cacheRef, off_t offset, const iovec *vecs, size_t count, size_t *_numBytes); extern status_t file_cache_read(void *_cacheRef, off_t offset, void *bufferBase, size_t *_size); extern status_t file_cache_write(void *_cacheRef, off_t offset, const void *buffer, size_t *_size); #ifdef __cplusplus } #endif #endif /* _FS_CACHE_H */