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- #!/bin/bash
- # Copyright (c) International Business Machines Corp., 2008
- # 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 wait until the sleep process should
- # have exited. Then we unfreeze the sleep process. We expect the
- # sleep process to wakeup almost immediately after the cgroup is thawed,
- # recognize that its expiration time has long since passed, and exit before
- # we get a chance to "see" it again.
- #
- . "${CGROUPS_TESTROOT}/libcgroup_freezer"
- SETS_DEFAULTS="${TCID=freeze_sleep_thaw.sh} ${TST_COUNT=1} ${TST_TOTAL=1}"
- declare -r TCID
- declare -r TST_COUNT
- declare -r TST_TOTAL
- export TCID TST_COUNT TST_TOTAL
- running_cgroup_test
- mount_freezer && {
- make_sample_cgroup && {
- start_sample_proc && {
- while /bin/true ; do
- trap 'break' ERR
- add_sample_proc_to_cgroup
- assert_cgroup_freezer_state "THAWED" \
- "ERROR: cgroup freezer started in non-THAWED state"
- issue_freeze_cmd
- wait_until_frozen
- assert_sample_proc_is_frozen
- echo -n "INFO: Waiting until sleep command should have finished ($sample_proc) ... "
- /bin/sleep $(($sample_sleep * 2))
- echo "done."
- # We expect the task to remain until it is thawed even though its
- # sleep period has long since expired.
- assert_sample_proc_is_frozen
- issue_thaw_cmd
- wait_until_thawed
- # We do NOT call
- # assert_task_not_frozen $sample_proc
- # here because we've slept past the point in time when the task should've
- # exited.
- assert_sample_proc_does_not_exist
- sample_proc=""
- result=$FINISHED
- break
- done
- trap '' ERR
- cleanup_cgroup_test
- tst_resm TINFO " Cleaning up $0"
- # We may need to stop the sample process because we could have failed before the
- # rest of the test caused it to stop.
- kill_sample_proc ; }
- rm_sample_cgroup ; }
- umount_freezer ; }
- # Failsafe cleanup
- cleanup_freezer || /bin/true
- exit $result
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