--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.eclipse.swt.gtk.linux.x86/src/org/eclipse/swt/widgets/RunnableLock.d	Fri Mar 20 23:03:58 2009 +0100
@@ -0,0 +1,57 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2007 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+module org.eclipse.swt.widgets.RunnableLock;
+
+import java.lang.all;
+
+import tango.core.Thread;
+import tango.core.Exception;
+import tango.core.sync.Condition;
+import tango.core.sync.Mutex;
+
+/**
+ * Instances of this class are used to ensure that an
+ * application cannot interfere with the locking mechanism
+ * used to implement asynchronous and synchronous communication
+ * between widgets and background threads.
+ */
+
+class RunnableLock : Mutex {
+    Runnable runnable;
+    Thread thread;
+    Exception throwable;
+
+    Condition cond;
+
+this (Runnable runnable) {
+    this.runnable = runnable;
+    this.cond = new Condition(this);
+}
+
+bool done () {
+    return runnable is null || throwable !is null;
+}
+
+void run () {
+    if (runnable !is null) runnable.run ();
+    runnable = null;
+}
+
+void notifyAll(){
+    cond.notifyAll();
+}
+void wait(){
+    cond.wait();
+}
+
+}