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Introduce asynchronous cache lock

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Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
This commit is contained in:
Robert Baldyga
2019-05-13 10:42:00 +02:00
parent b609164f78
commit 8a82be339f
13 changed files with 531 additions and 161 deletions
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35
inc/ocf_mngt.h
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@@ -120,18 +120,28 @@ int ocf_mngt_cache_get(ocf_cache_t cache);
*/
void ocf_mngt_cache_put(ocf_cache_t cache);
/**
* @brief Lock cache for management oparations (write lock, exclusive)
* @param[in] cache Handle to cache
* @param[in] error Status error code. Can be one of the following:
* 0 Cache successfully locked
* -OCF_ERR_CACHE_NOT_EXIST Can not lock cache - cache is already stopping
* -OCF_ERR_NO_MEM Cannot allocate needed memory
* -OCF_ERR_INTR Wait operation interrupted
*/
typedef void (*ocf_mngt_cache_lock_end_t)(ocf_cache_t cache,
void *priv, int error);
/**
* @brief Lock cache for management oparations (write lock, exclusive)
*
* @param[in] cache Handle to cache
*
* @retval 0 Cache successfully locked
* @retval -OCF_ERR_CACHE_NOT_EXIST Can not lock cache - cache is already
* stopping
* @retval -OCF_ERR_CACHE_IN_USE Can not lock cache - cache is in use
* @retval -OCF_ERR_INTR Wait operation interrupted
* @param[in] cmpl Completion callback
* @param[in] priv Private context of completion callback
*/
int ocf_mngt_cache_lock(ocf_cache_t cache);
void ocf_mngt_cache_lock(ocf_cache_t cache,
ocf_mngt_cache_lock_end_t cmpl, void *priv);
/**
* @brief Lock cache for read - assures cache config does not change while
@@ -139,14 +149,11 @@ int ocf_mngt_cache_lock(ocf_cache_t cache);
* read lock in parallel.
*
* @param[in] cache Handle to cache
*
* @retval 0 Cache successfully locked
* @retval -OCF_ERR_CACHE_NOT_EXIST Can not lock cache - cache is already
* stopping
* @retval -OCF_ERR_CACHE_IN_USE Can not lock cache - cache is in use
* @retval -OCF_ERR_INTR Wait operation interrupted
* @param[in] cmpl Completion callback
* @param[in] priv Private context of completion callback
*/
int ocf_mngt_cache_read_lock(ocf_cache_t cache);
void ocf_mngt_cache_read_lock(ocf_cache_t cache,
ocf_mngt_cache_lock_end_t cmpl, void *priv);
/**
* @brief Lock cache for management oparations (write lock, exclusive)