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block_cache: Implement cache_has_block_in_transaction function that will check the existence of block in one specific transaction.

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Signed-off-by: Augustin Cavalier <waddlesplash@gmail.com>
This commit is contained in:
hyche 2017-08-24 01:25:09 +07:00 committed by Augustin Cavalier
parent 8137f447cb
commit 1750cd1e92
5 changed files with 33 additions and 0 deletions
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1
headers/os/drivers/fs_cache.h
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@ -53,6 +53,7 @@ extern status_t cache_next_block_in_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);
extern bool cache_has_block_in_transaction(void* cache, int32 id, off_t blockNumber);
/* block cache */
extern void block_cache_delete(void *cache, bool allowWrites);

1
headers/private/fs_shell/fssh_api_wrapper.h
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@ -835,6 +835,7 @@
#define cache_blocks_in_transaction fssh_cache_blocks_in_transaction
#define cache_blocks_in_main_transaction fssh_cache_blocks_in_main_transaction
#define cache_blocks_in_sub_transaction fssh_cache_blocks_in_sub_transaction
#define cache_has_block_in_transaction fssh_cache_has_block_in_transaction
/* block cache */
#define block_cache_delete fssh_block_cache_delete

2
headers/private/fs_shell/fssh_fs_cache.h
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@ -62,6 +62,8 @@ extern int32_t fssh_cache_blocks_in_main_transaction(void *_cache,
int32_t id);
extern int32_t fssh_cache_blocks_in_sub_transaction(void *_cache,
int32_t id);
extern bool fssh_cache_has_block_in_transaction(void *_cache,
int32_t id, fssh_off_t blockNumber);
/* block cache */
extern void fssh_block_cache_delete(void *_cache, bool allowWrites);

15
src/system/kernel/cache/block_cache.cpp vendored
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@ -3301,6 +3301,21 @@ cache_blocks_in_sub_transaction(void* _cache, int32 id)
}
/*! Check if block is in transaction
*/
bool
cache_has_block_in_transaction(void* _cache, int32 id, off_t blockNumber)
{
block_cache* cache = (block_cache*)_cache;
TransactionLocker locker(cache);
cached_block* block = cache->hash->Lookup(blockNumber);
return (block != NULL && block->transaction != NULL
&& block->transaction->id == id);
}
// #pragma mark - public block cache API

14
src/tools/fs_shell/block_cache.cpp
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@ -1462,6 +1462,20 @@ fssh_cache_blocks_in_sub_transaction(void* _cache, int32_t id)
}
bool
fssh_cache_has_block_in_transaction(void* _cache, int32_t id,
fssh_off_t blockNumber)
{
block_cache* cache = (block_cache*)_cache;
MutexLocker locker(&cache->lock);
cached_block* block = (cached_block*)hash_lookup(cache->hash, &blockNumber);
return (block != NULL && block->transaction != NULL
&& block->transaction->id == id);
}
// #pragma mark - public block cache API