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#!/bin/sh
# Simple keep-alive script echoing the date on stdout
# This is needed to prevent the builders from killing a build
# staying too long without producing outputs, like while
# linking chromium with ld-bfd.
#
# Usage:
# keep-alive.sh start &
# some actions...
# keep-alive.sh stop
#
# Authors:
# Fabien Tassin <fta@sofaraway.org>
# License: GPLv2 or later
ACTION=$1
LOCK=/var/tmp/k-a.lock
INTERVAL=5
LINTERVAL=300
case $ACTION in
start)
echo $$ > $LOCK
T0=$(date +%s)
T1=0
while [ 1 ] ; do
if [ ! -f $LOCK ] ; then
break
fi
T2=$(date +%s)
if [ $((T2-T1)) -ge $LINTERVAL ] ; then
DELTA=$((T2-T0))
FREE=$(free -mo | cut -c1-6,30-40 | tail -2 | awk '{ print "Free " $1 " " $2 "M" } ' | tr '\n' ' ')
echo "[keep-alive] $(date) ($((DELTA/60)) min) [ $FREE]"
T1=$T2
fi
sleep $INTERVAL
done
exit 0
;;
stop)
PID=$(cat $LOCK)
rm -f $LOCK
exit 0
;;
*)
echo "Usage: $(basename $0) [start|stop]"
exit 1
esac
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