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* Added function block_cache_discard() that flushes blocks from the block cache,

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discarding their changes. This functionality currently only works correctly
  when no transactions are used.
* Started test application for the block cache, doesn't do anything yet.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28496 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
2008-11-04 14:49:33 +00:00
parent 5ae0bbaad0
commit 5b812019b4
7 changed files with 202 additions and 87 deletions
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headers/os/drivers/fs_cache.h
+39 -37
View File
@@ -33,70 +33,72 @@ 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,
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,
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_add_transaction_listener(void *_cache, int32 id,
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_add_transaction_listener(void *cache, int32 id,
int32 events, transaction_notification_hook hook,
void *data);
extern status_t cache_remove_transaction_listener(void *_cache, int32 id,
extern status_t cache_remove_transaction_listener(void *cache, int32 id,
transaction_notification_hook hook, void *data);
extern status_t cache_next_block_in_transaction(void *_cache, int32 id,
extern status_t cache_next_block_in_transaction(void *cache, int32 id,
bool mainOnly, long *_cookie, off_t *_blockNumber,
void **_data, void **_unchangedData);
extern int32 cache_blocks_in_transaction(void *_cache, int32 id);
extern int32 cache_blocks_in_main_transaction(void *_cache, int32 id);
extern int32 cache_blocks_in_sub_transaction(void *_cache, int32 id);
extern int32 cache_blocks_in_transaction(void *cache, int32 id);
extern int32 cache_blocks_in_main_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_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_sync_etc(void *_cache, off_t blockNumber,
extern status_t block_cache_sync(void *cache);
extern status_t block_cache_sync_etc(void *cache, off_t blockNumber,
size_t numBlocks);
extern status_t block_cache_make_writable(void *_cache, off_t blockNumber,
extern void block_cache_discard(void *cache, off_t blockNumber,
size_t numBlocks);
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,
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,
extern void *block_cache_get_writable(void *cache, off_t blockNumber,
int32 transaction);
extern void *block_cache_get_empty(void *_cache, off_t blockNumber,
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,
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,
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);
extern void block_cache_put(void *cache, off_t blockNumber);
/* file cache */
extern void *file_cache_create(dev_t mountID, ino_t vnodeID, off_t size);
extern void file_cache_delete(void *_cacheRef);
extern void file_cache_enable(void *_cacheRef);
extern bool file_cache_is_enabled(void *_cacheRef);
extern status_t file_cache_disable(void *_cacheRef);
extern status_t file_cache_set_size(void *_cacheRef, off_t size);
extern status_t file_cache_sync(void *_cache);
extern void file_cache_delete(void *cacheRef);
extern void file_cache_enable(void *cacheRef);
extern bool file_cache_is_enabled(void *cacheRef);
extern status_t file_cache_disable(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_read(void *_cacheRef, void *cookie, off_t offset,
extern status_t file_cache_read(void *cacheRef, void *cookie, off_t offset,
void *bufferBase, size_t *_size);
extern status_t file_cache_write(void *_cacheRef, void *cookie, off_t offset,
extern status_t file_cache_write(void *cacheRef, void *cookie, off_t offset,
const void *buffer, size_t *_size);
/* file map */
extern void *file_map_create(dev_t mountID, ino_t vnodeID, off_t size);
extern void file_map_delete(void *_map);
extern void file_map_set_size(void *_map, off_t size);
extern void file_map_invalidate(void *_map, off_t offset, off_t size);
extern status_t file_map_set_mode(void *_map, uint32 mode);
extern status_t file_map_translate(void *_map, off_t offset, size_t size,
extern void file_map_delete(void *map);
extern void file_map_set_size(void *map, off_t size);
extern void file_map_invalidate(void *map, off_t offset, off_t size);
extern status_t file_map_set_mode(void *map, uint32 mode);
extern status_t file_map_translate(void *map, off_t offset, size_t size,
struct file_io_vec *vecs, size_t *_count, size_t align);
/* entry cache */