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#!/bin/bash
# Copyright (C) 2010 Karel Zak <kzak@redhat.com>
TS_TOPDIR="${0%/*}/../.."
TS_DESC="lock"
TS_OPTIONAL="yes"
. "$TS_TOPDIR"/functions.sh
ts_init "$*"
TESTPROG="$TS_HELPER_LIBMOUNT_LOCK"
[ -x $TESTPROG ] || ts_skip "test not compiled"
#
# Be careful with number of processes. Don't forget that there is time limit
# when the mount waits on the mtab lock. If you define too much processes some
# of them will fail with timeout.
#
# Note: the original version (< 2.13) of util-linux is completely useless for
# this test (maximum for this old version is NLOOPS=10 and NPROCESSES=5 (2-way
# 2GHz machine)). It has terrible performance due a bad timeouts implementation
# in lock_mtab().
#
NLOOPS=1000
NPROCESSES=50
> $TS_OUTPUT.debug
echo 0 > $TS_OUTPUT
SYNCTIME=$(( $(date +%s) + 5 ))
for id in $(seq 0 $(( $NPROCESSES - 1 ))); do
ts_run $TESTPROG --lock --synctime $SYNCTIME $TS_OUTPUT $NLOOPS >> $TS_OUTPUT.debug 2>&1 &
done
wait
ts_finalize
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