diff options
Diffstat (limited to 'sql/sys_vars.cc')
| -rw-r--r-- | sql/sys_vars.cc | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/sql/sys_vars.cc b/sql/sys_vars.cc index cd69bdad5df..2fa24306066 100644 --- a/sql/sys_vars.cc +++ b/sql/sys_vars.cc @@ -48,6 +48,7 @@ // mysql_user_table_is_in_short_password_format #include "derror.h" // read_texts #include "sql_base.h" // close_cached_tables +#include "hostname.h" // host_cache_size #include <myisam.h> #include "log_slow.h" #include "debug_sync.h" // DEBUG_SYNC @@ -3773,6 +3774,22 @@ static Sys_var_tz Sys_time_zone( SESSION_VAR(time_zone), NO_CMD_LINE, DEFAULT(&default_tz), NO_MUTEX_GUARD, IN_BINLOG); +static bool fix_host_cache_size(sys_var *, THD *, enum_var_type) +{ + hostname_cache_resize((uint) host_cache_size); + return false; +} + +static Sys_var_ulong Sys_host_cache_size( + "host_cache_size", + "How many host names should be cached to avoid resolving.", + GLOBAL_VAR(host_cache_size), + CMD_LINE(REQUIRED_ARG), VALID_RANGE(0, 65536), + DEFAULT(HOST_CACHE_SIZE), + BLOCK_SIZE(1), + NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(NULL), + ON_UPDATE(fix_host_cache_size)); + static Sys_var_charptr Sys_ignore_db_dirs( "ignore_db_dirs", "Specifies a directory to add to the ignore list when collecting " |