Change in asterixdb[stabilization-f69489]: [NO ISSUE][HYR] Use System.nanotime for StopWatch

[Michael Blow (Code Review)]

Michael Blow has uploaded this change for review. ( 
https://asterix-gerrit.ics.uci.edu/3339


Change subject: [NO ISSUE][HYR] Use System.nanotime for StopWatch
......................................................................

[NO ISSUE][HYR] Use System.nanotime for StopWatch

Change-Id: Ic64f1b938c26161f5fb482af5ee1da6121f49643
---
M 
hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/util/StopWatch.java
1 file changed, 7 insertions(+), 12 deletions(-)



  git pull ssh://asterix-gerrit.ics.uci.edu:29418/asterixdb 
refs/changes/39/3339/1

diff --git 
a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/util/StopWatch.java
 
b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/util/StopWatch.java
index e752cb3..a1a39cb 100644
--- 
a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/util/StopWatch.java
+++ 
b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/util/StopWatch.java
@@ -19,32 +19,27 @@

 package org.apache.hyracks.api.util;

+import java.util.concurrent.TimeUnit;
+
 public class StopWatch {
     private long startTime = 0;
-    private long stopTime = 0;
     private long elapsedTime = 0;

     public void start() {
         elapsedTime = 0;
-        startTime = System.currentTimeMillis();
+        startTime = System.nanoTime();
     }

     public void stop() {
-        stopTime = System.currentTimeMillis();
-        elapsedTime += stopTime - startTime;
+        elapsedTime += System.nanoTime() - startTime;
     }

     public void resume() {
-        startTime = System.currentTimeMillis();
+        startTime = System.nanoTime();
     }

-    //elaspsed time in milliseconds
-    public long getElapsedTime() {
-        return elapsedTime;
+    public long elapsed(TimeUnit unit) {
+        return unit.convert(elapsedTime, TimeUnit.NANOSECONDS);
     }

-    //elaspsed time in seconds
-    public long getElapsedTimeSecs() {
-        return elapsedTime / 1000;
-    }
 }
\ No newline at end of file

--
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Gerrit-Project: asterixdb
Gerrit-Branch: stabilization-f69489
Gerrit-MessageType: newchange
Gerrit-Change-Id: Ic64f1b938c26161f5fb482af5ee1da6121f49643
Gerrit-Change-Number: 3339
Gerrit-PatchSet: 1
Gerrit-Owner: Michael Blow <mb...@apache.org>