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# Copyright (C) 2009 Sun Microsystems, Inc
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
# Tests for PERFORMANCE_SCHEMA
#
# Test the effect of a flush tables with read lock on SETUP_ tables.
--source include/not_embedded.inc
--source include/have_perfschema.inc
use performance_schema;
grant SELECT, UPDATE, LOCK TABLES on performance_schema.* to pfsuser@localhost;
flush privileges;
--echo connect (con1, localhost, pfsuser, , test);
connect (con1, localhost, pfsuser, , test);
lock tables performance_schema.SETUP_INSTRUMENTS read;
--disable_result_log
select * from performance_schema.SETUP_INSTRUMENTS;
--enable_result_log
unlock tables;
lock tables performance_schema.SETUP_INSTRUMENTS write;
update performance_schema.SETUP_INSTRUMENTS set enabled='NO';
update performance_schema.SETUP_INSTRUMENTS set enabled='YES';
unlock tables;
--echo connection default;
connection default;
flush tables with read lock;
--echo connection con1;
connection con1;
lock tables performance_schema.SETUP_INSTRUMENTS read;
--disable_result_log
select * from performance_schema.SETUP_INSTRUMENTS;
--enable_result_log
unlock tables;
# This will block
--send
lock tables performance_schema.SETUP_INSTRUMENTS write;
--echo connection default;
connection default;
let $wait_condition= select 1 from performance_schema.EVENTS_WAITS_CURRENT where event_name like "wait/synch/cond/sql/COND_global_read_lock";
--source include/wait_condition.inc
# Observe the blocked thread in the performance schema :)
select event_name,
left(source, locate(":", source)) as short_source,
timer_end, timer_wait, operation
from performance_schema.EVENTS_WAITS_CURRENT
where event_name like "wait/synch/cond/sql/COND_global_read_lock";
unlock tables;
connection con1;
--reap
update performance_schema.SETUP_INSTRUMENTS set enabled='NO';
update performance_schema.SETUP_INSTRUMENTS set enabled='YES';
unlock tables;
disconnect con1;
--source include/wait_until_disconnected.inc
--echo connection default;
connection default;
drop user pfsuser@localhost;
flush privileges;
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