1 #!/bin/bash 2 3 # Copyright (c) International Business Machines Corp., 2008 4 # Author: Matt Helsley <matthltc (at] 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 . "${CGROUPS_TESTROOT}/libcgroup_freezer" 31 SETS_DEFAULTS="${TCID=freeze_sleep_thaw.sh} ${TST_COUNT=1} ${TST_TOTAL=1}" 32 declare -r TCID 33 declare -r TST_COUNT 34 declare -r TST_TOTAL 35 export TCID TST_COUNT TST_TOTAL 36 37 running_cgroup_test 38 mount_freezer && { 39 make_sample_cgroup && { 40 start_sample_proc && { 41 42 while /bin/true ; do 43 trap 'break' ERR 44 add_sample_proc_to_cgroup 45 assert_cgroup_freezer_state "THAWED" \ 46 "ERROR: cgroup freezer started in non-THAWED state" 47 issue_freeze_cmd 48 wait_until_frozen 49 assert_sample_proc_is_frozen 50 51 echo -n "INFO: Waiting until sleep command should have finished ($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 71 done 72 trap '' ERR 73 cleanup_cgroup_test 74 tst_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. 78 kill_sample_proc ; } 79 rm_sample_cgroup ; } 80 umount_freezer ; } 81 82 # Failsafe cleanup 83 cleanup_freezer || /bin/true 84 85 exit $result 86
