diff options
Diffstat (limited to 'storage/innobase/include/buf0lru.h')
| -rw-r--r-- | storage/innobase/include/buf0lru.h | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/storage/innobase/include/buf0lru.h b/storage/innobase/include/buf0lru.h index 74c5525c2e5..f7a69e1c9e4 100644 --- a/storage/innobase/include/buf0lru.h +++ b/storage/innobase/include/buf0lru.h @@ -31,6 +31,9 @@ Created 11/5/1995 Heikki Tuuri #include "ut0byte.h" #include "buf0types.h" +// Forward declaration +struct trx_t; + /******************************************************************//** Returns TRUE if less than 25 % of the buffer pool is available. This can be used in heuristics to prevent huge transactions eating up the whole buffer @@ -49,15 +52,19 @@ These are low-level functions #define BUF_LRU_OLD_MIN_LEN 512 /* 8 megabytes of 16k pages */ /******************************************************************//** -Invalidates all pages belonging to a given tablespace when we are deleting -the data file(s) of that tablespace. A PROBLEM: if readahead is being started, -what guarantees that it will not try to read in pages after this operation has -completed? */ +Flushes all dirty pages or removes all pages belonging +to a given tablespace. A PROBLEM: if readahead is being started, what +guarantees that it will not try to read in pages after this operation +has completed? */ UNIV_INTERN void -buf_LRU_invalidate_tablespace( +buf_LRU_flush_or_remove_pages( /*==========================*/ - ulint id); /*!< in: space id */ + ulint id, /*!< in: space id */ + buf_remove_t buf_remove, /*!< in: remove or flush strategy */ + const trx_t* trx); /*!< to check if the operation must + be interrupted */ + #if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG /********************************************************************//** Insert a compressed block into buf_pool->zip_clean in the LRU order. */ @@ -273,15 +280,12 @@ extern uint buf_LRU_old_threshold_ms; These statistics are not 'of' LRU but 'for' LRU. We keep count of I/O and page_zip_decompress() operations. Based on the statistics we decide if we want to evict from buf_pool->unzip_LRU or buf_pool->LRU. */ -struct buf_LRU_stat_struct +struct buf_LRU_stat_t { ulint io; /**< Counter of buffer pool I/O operations. */ ulint unzip; /**< Counter of page_zip_decompress operations. */ }; -/** Statistics for selecting the LRU list for eviction. */ -typedef struct buf_LRU_stat_struct buf_LRU_stat_t; - /** Current operation counters. Not protected by any mutex. Cleared by buf_LRU_stat_update(). */ extern buf_LRU_stat_t buf_LRU_stat_cur; |