add memoru usage script

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7685 818b1a75-f10b-46b9-bf7c-635c3b92a50f

cmake_targets/tools/mem_usage.sh

+#!/usr/bin/env bash
+
+pid=$1
+sleep_sec=0.5
+
+if [ "$2" != "" ] ; then
+sleep_sec=$2
+fi
+#declare -r cnt=$sleep_sec
+OUTPUT_FILE="/tmp/mem_usage_${pid}_${sleep_sec}.csv" 
+echo "RSS(KB);PSS(KB);SHARED_CLEAN(KB);SHARED_DIRTY(KB);PRIVATE)KB)" >> $OUTPUT_FILE 
+echo "Mem usage for PID $pid with observation period of ${sleep_sec}" 
+
+while ps $pid >/dev/null
+do
+    if [ -f /proc/$pid/smaps ]; then
+        rss=$(awk '/^Rss/ {i = i + $2} END {print i}' /proc/$pid/smaps)
+        pss=$(awk '/^Pss/ {i = i + $2 + 0.5} END {print i}' /proc/$pid/smaps)
+        sc=$(awk '/^Shared_Clean/ {i = i + $2} END {print i}' /proc/$pid/smaps)            
+        sd=$(awk '/^Shared_Dirty/ {i = i + $2} END {print i}' /proc/$pid/smaps)
+        pc=$(awk '/^Private_Clean/ {i = i + $2} END {print i}' /proc/$pid/smaps)
+        pd=$(awk '/^Private_Dirty/ {i = i + $2} END {print i}' /proc/$pid/smaps)
+	echo "$cnt;$rss;$pss;$sc;$pc;$pd;" >> $OUTPUT_FILE 
+    fi 
+   
+    sleep $sleep_sec
+done