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increment and get the query_id atomically, otherwise two concurrent threads

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might end up having the same query id
This commit is contained in:
Sergei Golubchik
2014-02-19 21:40:15 +01:00
parent afcd7091a0
commit 11d27996e4
1 changed files with 4 additions and 3 deletions
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5
sql/sql_parse.cc
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@ -917,9 +917,10 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
DEBUG_SYNC(thd,"dispatch_command_before_set_time"); DEBUG_SYNC(thd,"dispatch_command_before_set_time");
thd->set_time(); thd->set_time();
if (server_command_flags[command] & CF_SKIP_QUERY_ID)
thd->set_query_id(get_query_id()); thd->set_query_id(get_query_id());
if (!(server_command_flags[command] & CF_SKIP_QUERY_ID)) else
next_query_id(); thd->set_query_id(next_query_id());
inc_thread_running(); inc_thread_running();
if (!(server_command_flags[command] & CF_SKIP_QUESTIONS)) if (!(server_command_flags[command] & CF_SKIP_QUESTIONS))