svn commit: r1834509 - /uima/uimaj/trunk/uimaj-core/src/main/java/org/apache/uima/internal/util/UIMAClassLoader.java

[sc...@apache.org]

Author: schor
Date: Wed Jun 27 15:01:36 2018
New Revision: 1834509

URL: http://svn.apache.org/viewvc?rev=1834509&view=rev
Log:
[UIMA-5803] remember if close() happens

Modified:
    uima/uimaj/trunk/uimaj-core/src/main/java/org/apache/uima/internal/util/UIMAClassLoader.java

Modified: uima/uimaj/trunk/uimaj-core/src/main/java/org/apache/uima/internal/util/UIMAClassLoader.java
URL: http://svn.apache.org/viewvc/uima/uimaj/trunk/uimaj-core/src/main/java/org/apache/uima/internal/util/UIMAClassLoader.java?rev=1834509&r1=1834508&r2=1834509&view=diff
==============================================================================
--- uima/uimaj/trunk/uimaj-core/src/main/java/org/apache/uima/internal/util/UIMAClassLoader.java (original)
+++ uima/uimaj/trunk/uimaj-core/src/main/java/org/apache/uima/internal/util/UIMAClassLoader.java Wed Jun 27 15:01:36 2018
@@ -20,6 +20,7 @@
 package org.apache.uima.internal.util;
 
 import java.io.File;
+import java.io.IOException;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.net.URLClassLoader;
@@ -49,6 +50,8 @@ public class UIMAClassLoader extends URL
   final private static int nbrLocks = Utilities.nextHigherPowerOf2(Runtime.getRuntime().availableProcessors());
   // not static
   final private Object[] syncLocks = new Object[nbrLocks];
+  
+  private boolean isClosed = false;
    
   /**
    * Transforms the string classpath to a URL array based classpath.
@@ -204,12 +207,37 @@ public class UIMAClassLoader extends URL
    */
   @Override
   public URL getResource(String name) {
-    URL url = findResource(name);
     
-    if (null == url) {
-      url = super.getResource(name);
+    synchronized (syncLocks[name.hashCode() & (nbrLocks - 1)]) { // https://issues.apache.org/jira/browse/UIMA-5741
+      URL url = findResource(name);
+      
+      if (null == url) {
+        url = super.getResource(name);
+      }
+      return url;
     }
-    return url;
   }
   
+  /**
+   * The UIMA Class Loader extends URLClassLoader.  This kind of classloader supports
+   * the close() method.
+   * 
+   * When this class loader is closed, it remembers this.
+   *
+   * @return true if this class loader has been closed.
+   */
+  public boolean isClosed() {
+    return isClosed;
+  }
+
+  /* (non-Javadoc)
+   * @see java.net.URLClassLoader#close()
+   */
+  @Override
+  public void close() throws IOException {
+    isClosed = true;
+    super.close();
+  }
+  
+  
 }