From 89685d55d7329065607df5a5f19b641e5947e22f Mon Sep 17 00:00:00 2001 From: Monty Date: Thu, 7 Apr 2016 19:51:40 +0300 Subject: Reuse THD for new user connections - To ensure that mallocs are marked for the correct THD, even if it's allocated in another thread, I added the thread_id to the THD constructor - Added st_my_thread_var to thr_lock_info_init() to avoid a call to my_thread_var - Moved things from THD::THD() to THD::init() - Moved some things to THD::cleanup() - Added THD::free_connection() and THD::reset_for_reuse() - Added THD to CONNECT::create_thd() - Added THD::thread_dbug_id and st_my_thread_var->dbug_id. These are needed to ensure that we have a constant thread_id used for debugging with a THD, even if it changes thread_id (=connection_id) - Set variables.pseudo_thread_id in constructor. Removed not needed sets. --- libmysqld/lib_sql.cc | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'libmysqld/lib_sql.cc') diff --git a/libmysqld/lib_sql.cc b/libmysqld/lib_sql.cc index bcb45aefbfb..7855a5f2a73 100644 --- a/libmysqld/lib_sql.cc +++ b/libmysqld/lib_sql.cc @@ -667,8 +667,7 @@ void init_embedded_mysql(MYSQL *mysql, int client_flag) */ void *create_embedded_thd(int client_flag) { - THD * thd= new THD; - thd->thread_id= thd->variables.pseudo_thread_id= next_thread_id(); + THD * thd= new THD(next_thread_id()); thd->thread_stack= (char*) &thd; if (thd->store_globals()) -- cgit v1.2.1