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- #!/bin/bash
- # Copyright (c) International Business Machines Corp., 2009
- # Author: Matt Helsley <matthltc@us.ibm.com>
- #
- # This library is free software; you can redistribute it and/or
- # modify it under the terms of the GNU Lesser General Public
- # License as published by the Free Software Foundation; either
- # version 2.1 of the License, or (at your option) any later version.
- #
- # This library 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
- # Lesser General Public License for more details.
- #
- # You should have received a copy of the GNU Lesser General Public
- # License along with this library; if not, write to the Free Software
- # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- #
- #
- # This bash script tests freezer code by starting a long sleep process.
- # The sleep process is frozen. We then thaw the process before it exits.
- # We expect the process to still be alive as we cleanup the test.
- #
- SETS_DEFAULTS="${CGROUPS_TESTROOT=..} ${TCID=fork_freeze.sh} ${TST_COUNT=1} ${TST_TOTAL=1}"
- . "${CGROUPS_TESTROOT}/libcgroup_freezer"
- . "${CGROUPS_TESTROOT}/libltp"
- declare -r TCID
- declare -r TST_COUNT
- declare -r TST_TOTAL
- export TCID TST_COUNT TST_TOTAL
- running_cgroup_test
- mount_freezer && {
- make_sample_cgroup && {
- start_sample_proc "${CGROUPS_TESTROOT}/timed_forkbomb" 4 && {
- while /bin/true ; do
- trap 'break' ERR
- assert_cgroup_freezer_state "THAWED" \
- "ERROR: cgroup freezer started in non-THAWED state"
- add_sample_proc_to_cgroup
- echo "go" >> /proc/$sample_proc/fd/0
- sleep "0.5s"
- issue_freeze_cmd
- wait_until_frozen
- assert_sample_proc_is_frozen
- issue_thaw_cmd
- wait_until_thawed
- assert_sample_proc_not_frozen
- sleep 4
- result=$FINISHED
- break
- done
- trap '' ERR
- cleanup_cgroup_test
- tst_resm TINFO " Cleaning up $0"
- # We need to kill the sample process.
- kill_sample_proc ; }
- rm_sample_cgroup ; }
- umount_freezer ; }
- # Failsafe cleanup
- cleanup_freezer || /bin/true
- exit $result
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