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koreader/plugins/backgroundrunner.koplugin/wrapper.sh

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#!/bin/sh
# Starts the arguments as a bash command in background with low priorty. The
# command will be killed if it executes for over 1 hour. If the command failed
# to start, this script returns 127. If the command is timed out, this script
# returns 255. Otherwise the return value of the command will be returned.
echo "TIMEOUT in environment: ${TIMEOUT}"
if [ -z "${TIMEOUT}" ]; then
TIMEOUT=3600
fi
echo "Timeout has been set to ${TIMEOUT} seconds"
echo "Will start command $*"
echo "$@" | nice -n 19 sh &
JOB_ID=$!
echo "Job id: ${JOB_ID}"
for i in $(seq 1 1 "${TIMEOUT}"); do
if ps -p "${JOB_ID}" >/dev/null 2>&1; then
# Job is still running.
sleep 1
ROUND=$(printf "%s" "${i}" | tail -c 1)
if [ "${ROUND}" -eq "0" ]; then
echo "Job ${JOB_ID} is still running ... waited for ${i} seconds."
fi
else
wait ${JOB_ID}
exit $?
fi
done
echo "Command $* has timed out"
kill -9 ${JOB_ID}
exit 255