diff options
Diffstat (limited to 'include/my_bitmap.h')
| -rw-r--r-- | include/my_bitmap.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/include/my_bitmap.h b/include/my_bitmap.h index 11df10f26a1..ca0037addfb 100644 --- a/include/my_bitmap.h +++ b/include/my_bitmap.h @@ -25,6 +25,12 @@ typedef struct st_bitmap { uchar *bitmap; uint bitmap_size; + my_bool thread_safe; /* set if several threads access the bitmap */ + /* + mutex will be acquired for the duration of each bitmap operation if + thread_safe flag is set. Otherwise, we optimize by not acquiring the + mutex + */ #ifdef THREAD pthread_mutex_t mutex; #endif @@ -33,10 +39,14 @@ typedef struct st_bitmap #ifdef __cplusplus extern "C" { #endif - extern my_bool bitmap_init(MY_BITMAP *bitmap, uint bitmap_size); + extern my_bool bitmap_init(MY_BITMAP *bitmap, uint bitmap_size, + my_bool thread_safe); extern void bitmap_free(MY_BITMAP *bitmap); extern void bitmap_set_bit(MY_BITMAP *bitmap, uint bitmap_bit); extern uint bitmap_set_next(MY_BITMAP *bitmap); + extern void bitmap_set_all(MY_BITMAP* bitmap); + extern my_bool bitmap_is_set(MY_BITMAP* bitmap, uint bitmap_bit); + extern void bitmap_clear_all(MY_BITMAP* bitmap); extern void bitmap_clear_bit(MY_BITMAP *bitmap, uint bitmap_bit); #ifdef __cplusplus } |