Source code: org/eclipse/swt/widgets/RunnableLock.java
1 /*******************************************************************************
2 * Copyright (c) 2000, 2003 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Common Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/cpl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 *******************************************************************************/
11 package org.eclipse.swt.widgets;
12
13
14 /**
15 * Instances of this class are used to ensure that an
16 * application cannot interfere with the locking mechanism
17 * used to implement asynchonous and synchronous communication
18 * between widgets and background threads.
19 */
20
21 class RunnableLock {
22 Runnable runnable;
23 Thread thread;
24 Throwable throwable;
25
26 RunnableLock (Runnable runnable) {
27 this.runnable = runnable;
28 }
29
30 boolean done () {
31 return runnable == null || throwable != null;
32 }
33
34 void run () {
35 if (runnable != null) runnable.run ();
36 runnable = null;
37 }
38
39 }