diff options
Diffstat (limited to 'include/mysql/plugin.h')
| -rw-r--r-- | include/mysql/plugin.h | 39 |
1 files changed, 23 insertions, 16 deletions
diff --git a/include/mysql/plugin.h b/include/mysql/plugin.h index 58b3848b85f..55ef6070f85 100644 --- a/include/mysql/plugin.h +++ b/include/mysql/plugin.h @@ -801,30 +801,37 @@ void mysql_query_cache_invalidate4(MYSQL_THD thd, const char *key, unsigned int key_length, int using_trx); -#ifdef __cplusplus -} -#endif -#ifdef __cplusplus /** Provide a handler data getter to simplify coding */ -inline -void * -thd_get_ha_data(const MYSQL_THD thd, const struct handlerton *hton) -{ - return *thd_ha_data(thd, hton); -} +void *thd_get_ha_data(const MYSQL_THD thd, const struct handlerton *hton); + /** Provide a handler data setter to simplify coding + + @details + Set ha_data pointer (storage engine per-connection information). + + To avoid unclean deactivation (uninstall) of storage engine plugin + in the middle of transaction, additional storage engine plugin + lock is acquired. + + If ha_data is not null and storage engine plugin was not locked + by thd_set_ha_data() in this connection before, storage engine + plugin gets locked. + + If ha_data is null and storage engine plugin was locked by + thd_set_ha_data() in this connection before, storage engine + plugin lock gets released. + + If handlerton::close_connection() didn't reset ha_data, server does + it immediately after calling handlerton::close_connection(). */ -inline -void -thd_set_ha_data(const MYSQL_THD thd, const struct handlerton *hton, - const void *ha_data) -{ - *thd_ha_data(thd, hton)= (void*) ha_data; +void thd_set_ha_data(MYSQL_THD thd, const struct handlerton *hton, + const void *ha_data); +#ifdef __cplusplus } #endif |