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 stopped and then frozen. We then thaw the process 24 # before it normally would have exited. 25 # We expect the process to still be around as we cleanup the test. 26 # 27 28 . "${CGROUPS_TESTROOT}/libcgroup_freezer" 29 SETS_DEFAULTS="${TCID=stop_freeze_thaw_cont.sh} ${TST_COUNT=1} ${TST_TOTAL=1}" 30 declare -r TCID 31 declare -r TST_COUNT 32 declare -r TST_TOTAL 33 export TCID TST_COUNT TST_TOTAL 34 35 running_cgroup_test 36 mount_freezer && { 37 make_sample_cgroup && { 38 start_sample_proc && { 39 40 while /bin/true ; do 41 trap 'break' ERR 42 assert_cgroup_freezer_state "THAWED" \ 43 "ERROR: cgroup freezer started in non-THAWED state" 44 add_sample_proc_to_cgroup 45 46 # STOP 47 kill -SIGSTOP $sample_proc 48 # TODO: reliably fix race between signal and assertion? 49 assert_sample_proc_stopped 50 51 # FREEZE 52 issue_freeze_cmd 53 wait_until_frozen 54 assert_sample_proc_is_frozen 55 56 # THAW 57 issue_thaw_cmd 58 wait_until_thawed 59 assert_sample_proc_exists 60 assert_sample_proc_not_frozen 61 assert_sample_proc_stopped 62 63 # CONTINUE 64 kill -SIGCONT $sample_proc 65 # TODO: reliably fix race between signal and assertion? 66 assert_sample_proc_exists 67 68 result=$FINISHED 69 break 70 done 71 trap '' ERR 72 cleanup_cgroup_test 73 tst_resm TINFO " Cleaning up $0" 74 75 # We need to stop the sample process. 76 kill_sample_proc ; } 77 rm_sample_cgroup ; } 78 umount_freezer ; } 79 80 # Failsafe cleanup 81 cleanup_freezer || /bin/true 82 83 exit $result 84
