From d608ad2dd6ea45e3ef96a98f41702971a5edd215 Mon Sep 17 00:00:00 2001 From: Mayank Prasad Date: Wed, 18 May 2011 20:10:01 +0530 Subject: Bug#11764633 : 57491: THD->MAIN_DA.IS_OK() ASSERT IN EMBEDDED Issue: While running embedded server, if client issues TEE command (\T foo/bar) and "foo/bar" directory doesn't exist, it is suppose to give error. But it was aborting. This was happening because wrong error handler was being called. Solution: Modified calls to correct error handler. In embedded server case, there are two error handler (client and server) which are supposed to be called based on which context code is in. If it is in client context, client error handler should be called otherwise server. Test case: Test case automation is not possible as current (following) code doesn't allow '\T' to be executed from command line (OR command read from a file): [client/mysql.cc] ... static int com_tee(String *buffer __attribute__((unused)), char *line __attribute__((unused))) { char file_name[FN_REFLEN], *end, *param; if (status.batch) << THIS IS TRUE WHILE EXECUTING FROM COMMAND LINE. return 0; ... So, not adding test case in GA. WIll add a test case in mysql-trunk after removing above code so that this could be properly tested before GA. libmysqld/lib_sql.cc: Added code to call client/server error handler based on in control is in client/server code respectively. sql/mysql_priv.h: Added comments for THR_THD, THR_MALLOC keys. sql/sql_class.cc: Function definition of new function restore_global to removes thread specific data from stack (which was stored in store global). sql/sql_class.h: Function declaration of new function restore_global. --- sql/mysql_priv.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'sql/mysql_priv.h') diff --git a/sql/mysql_priv.h b/sql/mysql_priv.h index 8f9a9080d12..3ce73291206 100644 --- a/sql/mysql_priv.h +++ b/sql/mysql_priv.h @@ -670,6 +670,10 @@ enum enum_check_fields extern "C" THD *_current_thd_noinline(); #define _current_thd() _current_thd_noinline() #else +/* + THR_THD is a key which will be used to set/get THD* for a thread, + using my_pthread_setspecific_ptr()/my_thread_getspecific_ptr(). +*/ extern pthread_key(THD*, THR_THD); inline THD *_current_thd(void) { @@ -2022,6 +2026,10 @@ extern TABLE_LIST general_log, slow_log; extern FILE *bootstrap_file; extern int bootstrap_error; extern FILE *stderror_file; +/* + THR_MALLOC is a key which will be used to set/get MEM_ROOT** for a thread, + using my_pthread_setspecific_ptr()/my_thread_getspecific_ptr(). +*/ extern pthread_key(MEM_ROOT**,THR_MALLOC); extern pthread_mutex_t LOCK_mysql_create_db,LOCK_Acl,LOCK_open, LOCK_lock_db, LOCK_mapped_file,LOCK_user_locks, LOCK_status, -- cgit v1.2.1