diff options
Diffstat (limited to 'myisam/mi_extra.c')
| -rw-r--r-- | myisam/mi_extra.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/myisam/mi_extra.c b/myisam/mi_extra.c index b90b5b35780..eaf9400babe 100644 --- a/myisam/mi_extra.c +++ b/myisam/mi_extra.c @@ -37,6 +37,24 @@ int mi_extra(MI_INFO *info, enum ha_extra_function function) switch (function) { case HA_EXTRA_RESET: + /* + Free buffers and reset the following flags: + EXTRA_CACHE, EXTRA_WRITE_CACHE, EXTRA_KEYREAD, EXTRA_QUICK + */ + if (info->opt_flag & (READ_CACHE_USED | WRITE_CACHE_USED)) + { + info->opt_flag&= ~(READ_CACHE_USED | WRITE_CACHE_USED); + error=end_io_cache(&info->rec_cache); + } +#if defined(HAVE_MMAP) && defined(HAVE_MADVICE) + if (info->opt_flag & MEMMAP_USED) + madvise(share->file_map,share->state.state.data_file_length,MADV_RANDOM); +#endif + info->opt_flag&= ~(KEY_READ_USED | REMEMBER_OLD_POS); + info->quick_mode=0; + /* Fall through */ + + case HA_EXTRA_RESET_STATE: /* Reset state (don't free buffers) */ info->lastinx= 0; /* Use first index as def */ info->last_search_keypage=info->lastpos= HA_OFFSET_ERROR; info->page_changed=1; |