diff options
Diffstat (limited to 'include/my_sys.h')
| -rw-r--r-- | include/my_sys.h | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/include/my_sys.h b/include/my_sys.h index 3b572821f8e..1ba353f04c4 100644 --- a/include/my_sys.h +++ b/include/my_sys.h @@ -516,6 +516,8 @@ typedef struct st_key_cache_var { ulonglong buff_size; /* size the memory allocated for the cache */ ulong block_size; /* size of the blocks in the key cache */ + ulong division_limit; /* min. percentage of warm blocks */ + ulong age_threshold; /* determines when hot block is downgraded */ KEY_CACHE_HANDLE cache; /* handles for the current and registered */ ulong blocks_used; /* number of currently used blocks */ ulong blocks_changed; /* number of currently dirty blocks */ @@ -530,6 +532,7 @@ typedef struct st_key_cache_var #define DEFAULT_KEY_CACHE_NAME "default" extern KEY_CACHE_HANDLE *dflt_keycache; extern KEY_CACHE_VAR dflt_key_cache_var; +#define DFLT_INIT_HITS 3 #include <my_alloc.h> @@ -670,17 +673,21 @@ extern long my_clock(void); extern sig_handler sigtstp_handler(int signal_number); extern void handle_recived_signals(void); extern int init_key_cache(KEY_CACHE_HANDLE *pkeycache, - uint key_cache_block_sie, + uint key_cache_block_size, ulong use_mem, KEY_CACHE_VAR* env); -extern int resize_key_cache(KEY_CACHE_HANDLE *pkeycache, ulong use_mem); +extern int resize_key_cache(KEY_CACHE_HANDLE *pkeycache, + uint key_cache_block_size, ulong use_mem); +extern void change_key_cache_param(KEY_CACHE_HANDLE keycache); extern byte *key_cache_read(KEY_CACHE_HANDLE keycache, - File file,my_off_t filepos,byte* buff,uint length, + File file, my_off_t filepos, int level, + byte* buff, uint length, uint block_length,int return_buffer); extern int key_cache_insert(KEY_CACHE_HANDLE keycache, - File file, my_off_t filepos, + File file, my_off_t filepos, int level, byte *buff, uint length); extern int key_cache_write(KEY_CACHE_HANDLE keycache, - File file,my_off_t filepos,byte* buff,uint length, + File file, my_off_t filepos, int level, + byte* buff, uint length, uint block_length,int force_write); extern int flush_key_blocks(KEY_CACHE_HANDLE keycache, int file, enum flush_type type); |