//
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.
//

package com.cloud.utils;

public class Profiler {
    private Long startTickInMs;
    private Long stopTickInMs;

    public Profiler() {
        startTickInMs = null;
        stopTickInMs = null;
    }

    public long start() {
        startTickInMs = System.currentTimeMillis();
        return startTickInMs.longValue();
    }

    public long stop() {
        stopTickInMs = System.currentTimeMillis();
        return stopTickInMs.longValue();
    }

    public long getDuration() {
        if (startTickInMs != null && stopTickInMs != null)
            return stopTickInMs.longValue() - startTickInMs.longValue();

        return -1;
    }

    public boolean isStarted() {
        return startTickInMs != null;
    }

    public boolean isStopped() {
        return stopTickInMs != null;
    }

    @Override
    public String toString() {
        if (startTickInMs == null)
            return "Not Started";

        if (stopTickInMs == null)
            return "Started but not stopped";

        return "Done. Duration: " + getDuration() + "ms";
    }
}

@@ -919,98 +919,8 @@
 s;%0A%0A
-    public Profiler() %7B%0A        startTickInMs = null;%0A        stopTickInMs = null;%0A    %7D%0A%0A
     
@@ -972,33 +972,24 @@
  System.
-currentTimeMillis
+nanoTime
 ();%0A    
@@ -1092,25 +1092,16 @@
 tem.
-currentTimeMillis
+nanoTime
 ();%0A
@@ -1234,24 +1234,26 @@
 nMs != null)
+ %7B
 %0A           
@@ -1313,16 +1313,26 @@
 Value();
+%0A        %7D
 %0A%0A      
@@ -1577,32 +1577,34 @@
 ickInMs == null)
+ %7B
 %0A            ret
@@ -1617,24 +1617,34 @@
 ot Started%22;
+%0A        %7D
 %0A%0A        if
@@ -1666,16 +1666,18 @@
 == null)
+ %7B
 %0A       
@@ -1714,16 +1714,26 @@
 topped%22;
+%0A        %7D
 %0A%0A      
@@ -1791,9 +1791,8 @@
 %0A    %7D%0A%7D
-%0A

Replace System.currentTimeMillis() by System.nanoTime()