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SHOW EXPLAIN DELETE, post merge fixes

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- Fix asserts, make sure that mysql_delete() operates on 
  thd->apc_target correctly* in all kinds of special cases 
  * - correctly means that one must switch it OFF iff it
  was switched ON.
- Added a few asserts to catch similar errors.
This commit is contained in:
Sergey Petrunya
2013-05-27 13:53:18 +04:00
parent 99890bafe3
commit 9718b9763d
3 changed files with 11 additions and 0 deletions
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7
sql/sql_update.cc
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@ -279,6 +279,7 @@ int mysql_update(THD *thd,
Update_plan query_plan;
query_plan.index= MAX_KEY;
query_plan.using_filesort= FALSE;
bool apc_target_enabled= false; // means was enabled *by code this function*
DBUG_ENTER("mysql_update");
if (open_tables(thd, &table_list, &table_count, 0))
@ -497,6 +498,7 @@ int mysql_update(THD *thd,
goto exit_without_my_ok;
thd->apc_target.enable();
apc_target_enabled= true;
DBUG_EXECUTE_IF("show_explain_probe_update_exec_start",
dbug_serve_apcs(thd, 1););
@ -923,6 +925,7 @@ int mysql_update(THD *thd,
thd->transaction.stmt.modified_non_trans_table= TRUE;
thd->apc_target.disable(); //psergey-todo.
apc_target_enabled= false;
end_read_record(&info);
delete select;
thd_proc_info(thd, "end");
@ -996,6 +999,9 @@ int mysql_update(THD *thd,
DBUG_RETURN((error >= 0 || thd->is_error()) ? 1 : 0);
err:
if (apc_target_enabled)
thd->apc_target.disable();
delete select;
free_underlaid_joins(thd, select_lex);
table->disable_keyread();
@ -1003,6 +1009,7 @@ err:
DBUG_RETURN(1);
exit_without_my_ok:
DBUG_ASSERT(!apc_target_enabled);
thd->lex->upd_del_plan= &query_plan;
select_send *result;