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| author | Sergei Golubchik <sergii@pisem.net> | 2012-10-16 13:04:42 +0200 |
|---|---|---|
| committer | Sergei Golubchik <sergii@pisem.net> | 2012-10-16 13:04:42 +0200 |
| commit | ee9afef27141f55165009fdbd58e54942f3a6867 (patch) | |
| tree | b5e15e62e10daa40aef3e6d33eeabf9205d1be0f /sql/mdl.h | |
| parent | d9a8799205d160688f81362356dd2323eb8a91ea (diff) | |
| parent | a619bfad30c13207fb0453a85af5740846186900 (diff) | |
| download | mariadb-git-ee9afef27141f55165009fdbd58e54942f3a6867.tar.gz | |
mysql-5.5.28
Diffstat (limited to 'sql/mdl.h')
| -rw-r--r-- | sql/mdl.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sql/mdl.h b/sql/mdl.h index d50de7d14c3..af7d75c1297 100644 --- a/sql/mdl.h +++ b/sql/mdl.h @@ -860,4 +860,10 @@ extern mysql_mutex_t LOCK_open; extern ulong mdl_locks_cache_size; static const ulong MDL_LOCKS_CACHE_SIZE_DEFAULT = 1024; +/* + Metadata locking subsystem tries not to grant more than + max_write_lock_count high-prio, strong locks successively, + to avoid starving out weak, low-prio locks. +*/ +extern "C" ulong max_write_lock_count; #endif |