#!/bin/sh
# PCP QA Test No. 933
# Exercise fix for RH BZ #1372550
#
# Copyright (c) 2016 Red Hat.
#

seq=`basename $0`
echo "QA output created by $seq"

# get standard environment, filters and checks
. ./common.product
. ./common.filter
. ./common.check

[ $PCP_PLATFORM = linux ] || _notrun "Linux proc PMDA specific test"

signal=$PCP_BINADM_DIR/pmsignal
status=1	# failure is the default!
$sudo rm -rf $tmp $tmp.* $seq.full
trap "_cleanup; exit \$status" 0 1 2 3 15

_cleanup()
{
    if [ -n "$pid" ]
    then
        $signal -s TERM $pid
        wait
        pid=""
    fi
    cd $here; rm -rf $tmp.*
}

# real QA test starts here

# Use the stopped runq metric as its less likely to be
# interfered with than some of the other metrics (like
# sleeping, runnable, etc) via other system activity.
#
pmsleep 10 &
pid=$!
pmsleep 0.1	# some time for sleep process to start
base=`pmprobe -v proc.runq.stopped | awk '{ print $3 }'`

kill -STOP $pid
pmsleep 0.1	# some time for process to stop
stop=`pmprobe -v proc.runq.stopped | awk '{ print $3 }'`

kill -CONT $pid
pmsleep 0.1	# some time for process to continue
cont=`pmprobe -v proc.runq.stopped | awk '{ print $3 }'`

echo "stopped counts:" > $seq.full
echo "base = $base" >> $seq.full
echo "stop = $stop" >> $seq.full
echo "cont = $cont" >> $seq.full

echo Silence is golden
# STOP should cause a jump in the number of stopped processes
[ $stop -gt $base ] || echo "Unexpected $stop (stop) le $base (base)"
# CONT should cause a drop in the number of stopped processes
[ $stop -gt $cont ] || echo "Unexpected $stop (stop) le $cont (cont)"

# success, all done
status=0
exit
