1.1 --- a/dew4nb/src/org/netbeans/modules/dew4nb/api/Server.java	Mon Feb 03 19:00:08 2014 +0100
     1.2 +++ b/dew4nb/src/org/netbeans/modules/dew4nb/api/Server.java	Tue Feb 04 09:48:26 2014 +0100
     1.3 @@ -77,6 +77,7 @@
     1.4      private static final int MAX_CHANNEL_LEN = 256;
     1.5      private static final char CHANNEL_SEPARATOR = '|';  //NOI18N
     1.6      private final HttpServer http;
     1.7 +    private final static boolean measuringEnabled="true".equals(System.getProperty("tailwindmeasurementenabled"));  //NOI18N
     1.8  
     1.9      private Server(
    1.10          @NonNull final Union2<Integer,Pair<Integer,Integer>> portCfg,
    1.11 @@ -221,6 +222,9 @@
    1.12          public void onMessage(WebSocket socket, byte[] bytes) {            
    1.13              final ByteBuffer bb = ByteBuffer.wrap(bytes);
    1.14              final CharBuffer cb = UTF8.decode(bb);
    1.15 +            if (measuringEnabled) {
    1.16 +                Utilities.insertStartTime(System.currentTimeMillis(), socket.hashCode());
    1.17 +            }
    1.18              onMessage(socket, cb.toString());
    1.19          }
    1.20      }

     2.1 --- a/dew4nb/src/org/netbeans/modules/dew4nb/endpoint/EndPoint.java	Mon Feb 03 19:00:08 2014 +0100
     2.2 +++ b/dew4nb/src/org/netbeans/modules/dew4nb/endpoint/EndPoint.java	Tue Feb 04 09:48:26 2014 +0100
     2.3 @@ -106,6 +106,7 @@
     2.4      private static final Object handlersCacheLock = new Object();
     2.5      //@GuardedBy("handlersCacheLock")
     2.6      private static Map<String,Collection<RequestHandler<?,?>>> handlersCache;
     2.7 +    private final static boolean measuringEnabled="true".equals(System.getProperty("tailwindmeasurementenabled"));  //NOI18N
     2.8      private final Object cacheLock = new Object();
     2.9      //@GuardedBy("cacheLock")
    2.10      private Map<RequestKind, RequestHandler<Request, RequestKind>> cache;
    2.11 @@ -231,9 +232,12 @@
    2.12              if (closed) {
    2.13                  throw new IllegalStateException("Env already closed");  //NOI18N
    2.14              }
    2.15 -            ws.send(message == null ?
    2.16 -                "null" :    //NOI18N
    2.17 -                message);
    2.18 +            if (measuringEnabled) {
    2.19 +                long timeinside=Utilities.getMeasuredTime(System.currentTimeMillis(), ws.hashCode());
    2.20 +                ws.send(message == null ? "null" :( (timeinside<0)? message : (message +"@"+timeinside) ) );    //NOI18N
    2.21 +            } else {
    2.22 +                ws.send(message == null ? "null" : ( message) );    //NOI18N
    2.23 +            }
    2.24          }
    2.25  
    2.26          public void setProperty(

     3.1 --- a/dew4nb/src/org/netbeans/modules/dew4nb/endpoint/Utilities.java	Mon Feb 03 19:00:08 2014 +0100
     3.2 +++ b/dew4nb/src/org/netbeans/modules/dew4nb/endpoint/Utilities.java	Tue Feb 04 09:48:26 2014 +0100
     3.3 @@ -42,6 +42,9 @@
     3.4  
     3.5  package org.netbeans.modules.dew4nb.endpoint;
     3.6  
     3.7 +import java.util.HashMap;
     3.8 +import java.util.logging.Level;
     3.9 +import java.util.logging.Logger;
    3.10  import net.java.html.json.Model;
    3.11  import net.java.html.json.Property;
    3.12  import org.netbeans.api.annotations.common.NonNull;
    3.13 @@ -56,6 +59,8 @@
    3.14      private Utilities() {
    3.15          throw new IllegalStateException("No instance allowed.");    //NOI18N
    3.16      }
    3.17 +    private static final HashMap<Integer,Long> measurements = new HashMap<>();
    3.18 +    private static final Logger LOG = Logger.getLogger(Utilities.class.getName());
    3.19  
    3.20      @NonNull
    3.21      public static Failure newFailure (
    3.22 @@ -84,6 +89,25 @@
    3.23          return fail;
    3.24      }
    3.25  
    3.26 +    public static void insertStartTime(long starttime, int hash) {
    3.27 +        measurements.put(hash, starttime);
    3.28 +        Log("Operation   "+hash+"  STARTED at starttime:  "+starttime);    //NOI18N
    3.29 +    }
    3.30 +    
    3.31 +    private static void Log(String message) {
    3.32 +        LOG.log(Level.INFO, message);
    3.33 +    }
    3.34 +
    3.35 +    public static long getMeasuredTime(long endtime, int hash) {
    3.36 +        Long start = measurements.get(hash);
    3.37 +        long result=-1;
    3.38 +        if (start!=null) {
    3.39 +            result = endtime - start;
    3.40 +        }
    3.41 +        Log("Operation   "+hash+"  FINISHED at:  "+endtime+"    Duration="+result+" ms");    //NOI18N 
    3.42 +        return result;
    3.43 +    }
    3.44 +    
    3.45      @Model(className = "Failure", properties = {
    3.46          @Property(name="status", type=Status.class),
    3.47          @Property(name = "type", type = String.class),