Java Doc for Stopwatch.java in  » Profiler » stopwatch » com » commsen » stopwatch » Java Source Code / Java DocumentationJava Source Code and Java Documentation

 .....
 long swId = Stopwatch.start("group", "label");
 // some code to be measured
 Stopwatch.stop(swId);
 ....
 

 .....
 long swId = Stopwatch.start("group", "label");
 try {
 // some code to be measured
 } catch (Exception) { 
 Stopwatch.skip(swId);
 } finally {
 Stopwatch.stop(swId);
 }
 ....
 

By default Stopwatch is not active! It means all calls to Stopwatch.start(String,String) , Stopwatch.skip(long) and Stopwatch.stop(long) methods are simply ignored. To activate Stopwatch do one of the following:

• explicitly call Stopwatch.setActive(true)
• pass -Dcom.commsen.stopwatch.activeOnStart=true JVM parameter
• create "stopwatch.properties" file on classpath and set activeOnStart=true

For example to see how many peaces of masured code in group g1 were running per day for the last 10 days, one could use:

 long[] load = Stopwatch.getLoad(
java.util.Calendar.DAY_OF_MONTH , 10);
 

For example to see how many peaces of masured code labeled l1 were running per second for the last 15 seconds, one could use:

 long[] load = Stopwatch.getLoad(
java.util.Calendar.SECOND , 15);
 

For example to see how many peaces of masured code were running per minute for the last 30 minutes, one could use:

 long[] load = Stopwatch.getLoad(
java.util.Calendar.MINUTE , 30);
 

For example to see how many peaces of masured code in group g1 labeled l1 were running per second for the last 3 weeks, one could use:

 long[] load = Stopwatch.getLoad(
java.util.Calendar.WEEK_OF_YEAR , 3);