EventDispatchThread.java (run): Stop running when interrupted.

* java/awt/EventDispatchThread.java (run): Stop running when
        interrupted.
        * java/awt/EventQueue.java (pop): Stop dispatch thread when done.
        Reset the queue after transferring its contents.
        (push): Start a new dispatch thread if none is running.

From-SVN: r75977

libjava/java/awt/EventDispatchThread.java

@@ -62,8 +62,18 @@ class EventDispatchThread extends Thread
         try
 	{
 	  AWTEvent evt = queue.getNextEvent();
+	  if (isInterrupted ())
+	    {
+	      // We are interrupted when we should finish executing
+	      return;
+	    }
 	  queue.dispatchEvent(evt);
 	}
+	catch (InterruptedException ie)
+	{
+	  // We are interrupted when we should finish executing
+	  return;
+	}
 	catch (Throwable x)
 	{
 	  System.err.println("Exception during event dispatch:");

libjava/java/awt/EventQueue.java

@@ -301,8 +301,8 @@ public class EventQueue
   /**
    * Allows a custom EventQueue implementation to replace this one. 
    * All pending events are transferred to the new queue. Calls to postEvent,
-   * getNextEvent, and peekEvent are forwarded to the pushed queue until it
-   * is removed with a pop().
+   * getNextEvent, and peekEvent and others are forwarded to the pushed queue
+   * until it is removed with a pop().
    *
    * @exception NullPointerException if newEventQueue is null.
    */
@@ -320,6 +320,10 @@ public class EventQueue
         return;
       }
 
+    /* Make sure we have a live dispatch thread to drive the queue */
+    if (dispatchThread == null)
+      dispatchThread = new EventDispatchThread(this);
+
     int i = next_out;
     while (i != next_in)
       {
@@ -361,6 +365,13 @@ public class EventQueue
             if (++i == queue.length)
               i = 0;
           }
+	// Empty the queue so it can be reused
+	next_in = 0;
+	next_out = 0;
+
+        // Tell our EventDispatchThread that it can end execution
+        dispatchThread.interrupt ();
+	dispatchThread = null;
       }
   }