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###############################################################################
# #
# Variable Name: wait_timeout #
# Scope: GLOBAL | SESSION #
# Access Type: Dynamic #
# Data Type: numeric #
# Default Value: #
# Range: #
# #
# #
# Creation Date: 2008-03-07 #
# Author: Salman Rawala #
# #
# Modified: HHunger 2008-08-27 Simplified the test and replaced the sleeps. #
# #
# Description: Test Cases of Dynamic System Variable wait_timeout #
# that checks the functionality of this variable #
# #
# Reference: #
# http://dev.mysql.com/doc/refman/5.1/en/server-system-variables.html #
# #
###############################################################################
--source include/not_embedded.inc
SET @start_value= @@global.wait_timeout;
--echo '#--------------------FN_DYNVARS_186_01-------------------------#'
#######################################################################
# 1. test of scope session
#######################################################################
SET @start_time= UNIX_TIMESTAMP();
connect (test_con1, localhost, root,,);
connection test_con1;
# If not explicitly changed, @@session.wait_timeout equals @@global.wait_timeout.
SELECT @@session.wait_timeout = @@global.wait_timeout AS 'Expect 1';
# Find a small value <> @@global.wait_timeout.
let $session_value =
`SELECT IF(@@global.wait_timeout <> 2 OR @@global.wait_timeout IS NULL, 2, 3)`;
--replace_result $session_value <session_value>
eval SET @@session.wait_timeout = $session_value;
connect (test_con2, localhost, root,,);
connection test_con2;
--replace_result $session_value <session_value>
eval SET @@session.wait_timeout = $session_value - 1;
connection default;
--echo wait until connections ready
let $wait_condition= SELECT COUNT(*) = 1 FROM information_schema.processlist;
--source include/wait_condition.inc
SELECT info FROM information_schema.processlist;
--echo '#--------------------FN_DYNVARS_186_03-------------------------#'
#######################################################################
# 2. test of scope global
#######################################################################
# Find a small value <> @@global.wait_timeout.
let $global_value = $session_value + 1;
--replace_result $global_value <global_value>
eval SET @@global.wait_timeout= $global_value;
# Changing the @@global.wait_timeout has no influence on the
# @@session.wait_timeout of already established sessions.
SELECT @@session.wait_timeout = @start_value AS 'Expect 1';
connect (test_con3, localhost, root,,);
connection test_con3;
# If not explicitly changed, @@session.wait_timeout equals @@global.wait_timeout.
SELECT @@session.wait_timeout = @@global.wait_timeout AS 'Expect 1';
connection default;
# We can be sure that the connections test_con1 and test_con2 must be
# established because both have already executed a SET @@session.wait_timeout.
# This means they are or at least were visible within the processlist.
# Therefore we can now simply wait till both disappear from the processlist.
let $wait_condition= SELECT COUNT(*) = 1 FROM information_schema.processlist;
--source include/wait_condition.inc
SELECT info FROM information_schema.processlist;
--replace_result $global_value <global_value> $session_value <session_value>;
eval SELECT UNIX_TIMESTAMP() - @start_time >= $global_value + $session_value;
SET @@global.wait_timeout= @start_value;
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