diff options
Diffstat (limited to 'sql/sql_class.cc')
| -rw-r--r-- | sql/sql_class.cc | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/sql/sql_class.cc b/sql/sql_class.cc index 896bdec2913..11b2bb93430 100644 --- a/sql/sql_class.cc +++ b/sql/sql_class.cc @@ -37,6 +37,8 @@ #include <mysys_err.h> #include <assert.h> +extern struct rand_struct sql_rand; + /***************************************************************************** ** Instansiate templates *****************************************************************************/ @@ -78,7 +80,7 @@ static void free_var(user_var_entry *entry) ****************************************************************************/ THD::THD():user_time(0),fatal_error(0),last_insert_id_used(0), - insert_id_used(0),in_lock_tables(0), + insert_id_used(0),rand_used(0),in_lock_tables(0), global_read_lock(0),bootstrap(0) { host=user=priv_user=db=query=ip=0; @@ -158,6 +160,18 @@ THD::THD():user_time(0),fatal_error(0),last_insert_id_used(0), transaction.trans_log.end_of_file= max_binlog_cache_size; } #endif + + /* + We need good random number initialization for new thread + Just coping global one will not work + */ + { + pthread_mutex_lock(&LOCK_thread_count); + ulong tmp=(ulong) (rnd(&sql_rand) * 3000000); + randominit(&rand, tmp + (ulong) start_time, + tmp + (ulong) thread_id); + pthread_mutex_unlock(&LOCK_thread_count); + } } /* Do operations that may take a long time */ |