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Diffstat (limited to 'pkgtools/pkgtasks/files/t/t_lock.sh')
| -rw-r--r-- | pkgtools/pkgtasks/files/t/t_lock.sh | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/pkgtools/pkgtasks/files/t/t_lock.sh b/pkgtools/pkgtasks/files/t/t_lock.sh new file mode 100644 index 00000000000..a1cc9d2bb2c --- /dev/null +++ b/pkgtools/pkgtasks/files/t/t_lock.sh @@ -0,0 +1,120 @@ +# Copyright (c) 2017 The NetBSD Foundation, Inc. +# All rights reserved. +# +# This code is derived from software contributed to The NetBSD Foundation +# by Johnny C. Lam. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS +# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED +# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS +# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +# POSSIBILITY OF SUCH DAMAGE. + +task_load createfile +task_load lock +task_load unittest + +test_setup() +{ + : ${CAT:=cat} + : ${CMP:=cmp} + : ${SLEEP:=sleep} + + lockfile="lock" +} + +test1() +{ + describe="create lock" + if task_lock "$lockfile"; then + : "success" + else + return 1 + fi + if [ ! -f "$lockfile" ]; then + describe="$describe: $lockfile missing!" + return 1 + fi + return 0 +} + +test2() +{ + describe="create nonblocking lock, pre-existing lock file" + task_createfile "$lockfile" + if task_lock -n "$lockfile"; then + return 1 + fi + return 0 +} + +test3() +{ + describe="release lock" + task_lock "$lockfile" + if task_lock -r "$lockfile"; then + : "success" + else + return 1 + fi + if [ -f "$lockfile" ]; then + describe="$describe: $lockfile exists!" + return 1 + fi + return 0 +} + +test4() +{ + describe="create lock, competing processes" + local timeout=3 + # Create a child process that writes to "value". + ( if task_lock "$lockfile"; then + echo "child" >> value + ${SLEEP} $timeout + task_lock -r "$lockfile" + fi ) & + # + # Wait for up to $timeout seconds for the child to write to the + # datefile. + # + while [ $timeout -gt 0 ]; do + [ ! -f value ] || break + ${SLEEP} 1 + timeout=$(( $timeout - 1 )) + done + # Block waiting for background process to unlock. + if task_lock "$lockfile"; then + echo "parent" >> value + task_lock -r "$lockfile" + fi + # Check that the writes were serialized: child, then parent. + ${CAT} > expected << 'EOF' +child +parent +EOF + if ${CMP} -s expected value; then + : "success" + else + describe="$describe: child after parent!" + return 1 + fi + return 0 +} + +task_run_tests "$@" |