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#
# SUMMARY
# Check if statement reading table '$table' takes shared locks
# on some of its rows.
#
# PARAMETERS
# $table Table for which presence of row locks should be checked.
# $con_aux Name of auxiliary connection to be used by this script.
# $statement Statement to be checked.
# $wait_statement Sub-statement which is supposed to acquire locks (should
# be the same as $statement for ordinary statements).
#
# EXAMPLE
# innodb_mysql_lock2.test
#
--disable_result_log
--disable_query_log
connection default;
begin;
--eval select * from $table for update;
connection $con_aux;
begin;
--send_eval $statement;
--enable_result_log
--enable_query_log
connection default;
# Wait until statement is successfully blocked because
# all rows in table are X-locked. This means that at
# least it acquires S-locks on some of rows.
let $wait_condition=
select count(*) = 1 from information_schema.processlist
where state in ("Sending data","statistics", "preparing", "updating",
"executing", "Searching rows for update") and
info = "$wait_statement";
--source include/wait_condition.inc
--disable_result_log
--disable_query_log
rollback;
connection $con_aux;
--reap
rollback;
connection default;
--enable_result_log
--enable_query_log
if ($success)
{
--echo Success: '$statement' takes shared row locks on '$table'.
}
if (!$success)
{
--echo Error: '$statement' hasn't taken shared row locks on '$table'!
}
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