svn commit: r1208827 - /jmeter/trunk/src/reports/org/apache/jmeter/gui/ReportGuiPackage.java

[pmouawad]

Author: pmouawad
Date: Wed Nov 30 22:03:17 2011
New Revision: 1208827

URL: http://svn.apache.org/viewvc?rev=1208827&view=rev
Log:
Fixed potential double init if method is called concurrently

Modified:
    jmeter/trunk/src/reports/org/apache/jmeter/gui/ReportGuiPackage.java

Modified: jmeter/trunk/src/reports/org/apache/jmeter/gui/ReportGuiPackage.java
URL: 
http://svn.apache.org/viewvc/jmeter/trunk/src/reports/org/apache/jmeter/gui/ReportGuiPackage.java?rev=1208827&r1=1208826&r2=1208827&view=diff
==============================================================================
--- jmeter/trunk/src/reports/org/apache/jmeter/gui/ReportGuiPackage.java 
(original)
+++ jmeter/trunk/src/reports/org/apache/jmeter/gui/ReportGuiPackage.java Wed 
Nov 30 22:03:17 2011
@@ -54,6 +54,8 @@ public final class ReportGuiPackage impl
     /** Logging. */
     private static final Logger log = LoggingManager.getLoggerForClass();
 
+       private static final Object LOCK = new Object();
+
     /** Singleton instance. */
     private static ReportGuiPackage guiPack;
 
@@ -128,9 +130,13 @@ public final class ReportGuiPackage impl
      */
     public static ReportGuiPackage getInstance(ReportTreeListener listener, 
ReportTreeModel treeModel) {
         if (guiPack == null) {
-            guiPack = new ReportGuiPackage();
-            guiPack.setTreeListener(listener);
-            guiPack.setTreeModel(treeModel);
+               synchronized (LOCK) {
+                       if(guiPack== null) {
+                       guiPack = new ReportGuiPackage();
+                       guiPack.setTreeListener(listener);
+                       guiPack.setTreeModel(treeModel);                        
        
+                       }
+                       }
         }
         return guiPack;
     }