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add new and rearrange existing execution time measurements and log me…
…ssages #86
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| /** | ||
| * StopWatch.java Copyright UCAR (c) 2018. University Corporation for Atmospheric Research (UCAR), | ||
| * National Center for Atmospheric Research (NCAR), Research Applications Laboratory (RAL), P.O. Box | ||
| * 3000, Boulder, Colorado, 80307-3000, USA.Copyright UCAR (c) 2018. | ||
| */ | ||
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| package edu.ucar.metviewer; | ||
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| /** | ||
| * @author : tatiana $ | ||
| * @version : 1.0 : 05/11/18 15:02 $ | ||
| */ | ||
| public class StopWatch { | ||
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| private Long startTime; | ||
| private Long stopTime; | ||
| private Long duration; | ||
| private Long totalDuration; | ||
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| public static void main(String args[]) throws Exception { | ||
| StopWatch stopWatch = new StopWatch(); | ||
| stopWatch.start(); | ||
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| for (int i = 0; i < 10000000; i++) { | ||
| Object obj = new Object(); | ||
| } | ||
| stopWatch.stop(); | ||
| System.out.println(stopWatch.getFormattedDuration()); | ||
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| stopWatch.start(); | ||
| for (int i = 0; i < 10000000; i++) { | ||
| Object obj = new Object(); | ||
| } | ||
| stopWatch.stop(); | ||
| System.out.println(stopWatch.getFormattedDuration()); | ||
| System.out.println(stopWatch.getFormattedTotalDuration()); | ||
| } | ||
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| public void start() { | ||
| startTime = System.nanoTime(); | ||
| stopTime = null; | ||
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| duration = null; | ||
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| } | ||
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| public void stop() throws Exception { | ||
| if (startTime == null) { | ||
| throw new Exception("Start time was never set"); | ||
| } | ||
| stopTime = System.nanoTime(); | ||
| duration = stopTime - startTime; | ||
| if (totalDuration == null) { | ||
| totalDuration = duration; | ||
| } else { | ||
| totalDuration = totalDuration + duration; | ||
| } | ||
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| } | ||
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| public Long getTotalDuration() { | ||
| return totalDuration; | ||
| } | ||
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| public String getFormattedDuration() throws Exception { | ||
| if (duration == null) { | ||
| throw new Exception("Start or stop time was never set"); | ||
| } | ||
| return MVUtil.formatTimeSpan(duration / 1000000); | ||
| } | ||
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| public String getFormattedTotalDuration() throws Exception { | ||
| if (totalDuration == null) { | ||
| throw new Exception("Start or stop time was never set"); | ||
| } | ||
| return MVUtil.formatTimeSpan(totalDuration / 1000000); | ||
| } | ||
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| } |
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