90 lines
2.6 KiB
Bash
Executable File
90 lines
2.6 KiB
Bash
Executable File
#!/bin/bash
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# Copyright (c) International Business Machines Corp., 2008
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# Author: Matt Helsley <matthltc@us.ibm.com>
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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#
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# This bash script tests freezer code by starting a long sleep process.
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# The sleep process is frozen. We then kill the sleep process.
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# Then we unfreeze the sleep process and see what happens. We expect the
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# sleep process to receive the kill signals and exit almost immediately
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# after the cgroup is thawed.
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#
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. "${CGROUPS_TESTROOT}/libcgroup_freezer"
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SETS_DEFAULTS="${TCID=freeze_kill_thaw.sh} ${TST_COUNT=1} ${TST_TOTAL=1}"
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declare -r TCID
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declare -r TST_COUNT
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declare -r TST_TOTAL
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export TCID TST_COUNT TST_TOTAL
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running_cgroup_test
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mount_freezer && {
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make_sample_cgroup && {
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start_sample_proc && {
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while /bin/true ; do
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trap 'break' ERR
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assert_cgroup_freezer_state "THAWED" \
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"ERROR: cgroup freezer started in non-THAWED state"
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add_sample_proc_to_cgroup
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# FREEZE
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issue_freeze_cmd
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wait_until_frozen
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assert_sample_proc_is_frozen
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# KILL
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# NOTE: not "send_signal" because we're in the freezer tests
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echo -n "INFO: Killing $sample_proc ..."
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kill $sample_proc || kill -9 $sample_proc
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echo " done."
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# THAW
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# We expect that kill will not complete until the sample process is
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# thawed. We also expect the task to remain visible to 'ps'.
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# TODO: reliably fix race between signal and assert ??
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assert_sample_proc_is_frozen
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issue_thaw_cmd
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wait_until_thawed
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# We do NOT call
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# assert_task_not_frozen $sample_proc
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# here because we've killed the sample process.
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assert_sample_proc_does_not_exist
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sample_proc=""
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result=$FINISHED
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break
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done
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trap '' ERR
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cleanup_cgroup_test
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tst_resm TINFO " Cleaning up $0"
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# We may need to stop the sample process because we could have failed before the
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# rest of the test caused it to stop.
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kill_sample_proc ; }
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rm_sample_cgroup ; }
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umount_freezer ; }
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# Failsafe cleanup
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cleanup_freezer || /bin/true
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exit $result
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