1#!/bin/bash 2 3# Copyright (c) International Business Machines Corp., 2008 4# Author: Matt Helsley <matthltc@us.ibm.com> 5# 6# This library is free software; you can redistribute it and/or 7# modify it under the terms of the GNU Lesser General Public 8# License as published by the Free Software Foundation; either 9# version 2.1 of the License, or (at your option) any later version. 10# 11# This library is distributed in the hope that it will be useful, 12# but WITHOUT ANY WARRANTY; without even the implied warranty of 13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14# Lesser General Public License for more details. 15# 16# You should have received a copy of the GNU Lesser General Public 17# License along with this library; if not, write to the Free Software 18# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19# 20 21# 22# This bash script tests freezer code by starting a long sleep process. 23# The sleep process is frozen. We then wait until the sleep process should 24# have exited. Then we unfreeze the sleep process. We expect the 25# sleep process to wakeup almost immediately after the cgroup is thawed, 26# recognize that its expiration time has long since passed, and exit before 27# we get a chance to "see" it again. 28# 29 30. "${CGROUPS_TESTROOT}/libcgroup_freezer" 31SETS_DEFAULTS="${TCID=freeze_sleep_thaw.sh} ${TST_COUNT=1} ${TST_TOTAL=1}" 32declare -r TCID 33declare -r TST_COUNT 34declare -r TST_TOTAL 35export TCID TST_COUNT TST_TOTAL 36 37running_cgroup_test 38mount_freezer && { 39make_sample_cgroup && { 40start_sample_proc && { 41 42while /bin/true ; do 43 trap 'break' ERR 44 add_sample_proc_to_cgroup 45 assert_cgroup_freezer_state "THAWED" \ 46 "ERROR: cgroup freezer started in non-THAWED state" 47 issue_freeze_cmd 48 wait_until_frozen 49 assert_sample_proc_is_frozen 50 51 echo -n "INFO: Waiting until sleep command should have finished ($sample_proc) ... " 52 /bin/sleep $(($sample_sleep * 2)) 53 echo "done." 54 55 # We expect the task to remain until it is thawed even though its 56 # sleep period has long since expired. 57 assert_sample_proc_is_frozen 58 59 issue_thaw_cmd 60 wait_until_thawed 61 62 # We do NOT call 63 # assert_task_not_frozen $sample_proc 64 # here because we've slept past the point in time when the task should've 65 # exited. 66 assert_sample_proc_does_not_exist 67 68 sample_proc="" 69 result=$FINISHED 70 break 71done 72trap '' ERR 73cleanup_cgroup_test 74tst_resm TINFO " Cleaning up $0" 75 76# We may need to stop the sample process because we could have failed before the 77# rest of the test caused it to stop. 78kill_sample_proc ; } 79rm_sample_cgroup ; } 80umount_freezer ; } 81 82# Failsafe cleanup 83cleanup_freezer || /bin/true 84 85exit $result 86