?? runnablelock.java
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/******************************************************************************* * Copyright (c) 2000, 2003 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Common Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/cpl-v10.html * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/package org.eclipse.swt.widgets;/** * Instances of this class are used to ensure that an * application cannot interfere with the locking mechanism * used to implement asynchonous and synchronous communication * between widgets and background threads. */class RunnableLock { Runnable runnable; Thread thread; Throwable throwable; RunnableLock (Runnable runnable) { this.runnable = runnable;}boolean done () { return runnable == null || throwable != null;}void run () { if (runnable != null) runnable.run (); runnable = null;}}
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