torture: Forgive lengthy trace dumps and preemption

if test $commandcompleted -eq 0 -a -n "$qemu_pid"

then

	echo Grace period for qemu job at pid $qemu_pid

	oldline="`tail $resdir/console.log`"

	while :

	do

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

		else

			break

		fi

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

		must_continue=no

		newline="`tail $resdir/console.log`"

		if test "$newline" != "$oldline" && echo $newline | grep -q ' [0-9]\+us : '

		then

			must_continue=yes

		fi

		last_ts="`tail $resdir/console.log | grep '^\[ *[0-9]\+\.[0-9]\+]' | tail -1 | sed -e 's/^\[ *//' -e 's/\..*$//'`"

		if test -z "last_ts"

		then

			last_ts=0

		fi

		if test "$newline" != "$oldline" -a "$last_ts" -lt $((seconds + $TORTURE_SHUTDOWN_GRACE))

		then

			must_continue=yes

		fi

		if test $must_continue = no -a $kruntime -ge $((seconds + $TORTURE_SHUTDOWN_GRACE))

		then

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

			kill -KILL $qemu_pid

			break

		fi

		sleep 1

		oldline=$newline

		sleep 10

	done

elif test -z "$qemu_pid"

then