torture: Use elapsed time to detect hangs

qemu_pid=$!

commandcompleted=0

echo Monitoring qemu job at pid $qemu_pid

for ((i=0;i<$seconds;i++))

while :

do

	kruntime=`awk 'BEGIN { print systime() - '"$kstarttime"' }' < /dev/null`

	if kill -0 $qemu_pid > /dev/null 2>&1

	then

		if test $kruntime -ge $seconds

		then

			break;

		fi

		sleep 1

	else

		commandcompleted=1

		kruntime=`awk 'BEGIN { print systime() - '"$kstarttime"' }' < /dev/null`

		if test $kruntime -lt $seconds

		then

			echo Completed in $kruntime vs. $seconds >> $resdir/Warnings 2>&1

if test $commandcompleted -eq 0

then

	echo Grace period for qemu job at pid $qemu_pid

	for ((i=0;i<=$grace;i++))

	while :

	do

		kruntime=`awk 'BEGIN { print systime() - '"$kstarttime"' }' < /dev/null`

		if kill -0 $qemu_pid > /dev/null 2>&1

		then

			sleep 1

			:

		else

			break

		fi

		if test $i -eq $grace

		if test $kruntime -ge $((seconds + grace))

		then

			kruntime=`awk 'BEGIN { print systime() - '"$kstarttime"' }'`

			echo "!!! Hang at $kruntime vs. $seconds seconds" >> $resdir/Warnings 2>&1

			kill -KILL $qemu_pid

			break

		fi

		sleep 1

	done

fi