8aa540d2f7
Imported GNU Classpath 0.90
* scripts/makemake.tcl: Set gnu/java/awt/peer/swing to ignore.
* gnu/classpath/jdwp/VMFrame.java (SIZE): New constant.
* java/lang/VMCompiler.java: Use gnu.java.security.hash.MD5.
* java/lang/Math.java: New override file.
* java/lang/Character.java: Merged from Classpath.
(start, end): Now 'int's.
(canonicalName): New field.
(CANONICAL_NAME, NO_SPACES_NAME, CONSTANT_NAME): New constants.
(UnicodeBlock): Added argument.
(of): New overload.
(forName): New method.
Updated unicode blocks.
(sets): Updated.
* sources.am: Regenerated.
* Makefile.in: Likewise.
From-SVN: r111942
112 lines
3.5 KiB
Java
112 lines
3.5 KiB
Java
/* EventDispatcher.java -- Dispatch events for prefs
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Copyright (C) 2006 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.java.util.prefs;
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import java.util.ArrayList;
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/**
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* This is a helper class used for dispatching events for
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* the prefs package.
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*/
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public class EventDispatcher extends Thread
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{
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// This is a singleton class. We dispatch all events via a
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// new Thread which is created on demand.
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private static final Thread dispatchThread = new EventDispatcher();
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// This is a queue of events to dispatch. This thread waits on
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// the queue and when notified will remove events until the queue
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// is empty.
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private static final ArrayList queue = new ArrayList();
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// FIXME: this thread probably ought to go in some classpath-internal
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// ThreadGroup. But we don't have that yet.
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private EventDispatcher()
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{
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setDaemon(true);
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start();
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}
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public void run()
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{
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while (true)
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{
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Runnable r;
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synchronized (queue)
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{
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while (queue.size() == 0)
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{
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try
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{
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wait();
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}
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catch (InterruptedException _)
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{
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// Ignore.
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}
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}
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r = (Runnable) queue.remove(0);
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}
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// Invoke outside the synchronization, so that
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// we aren't blocking other threads from posting events.
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try
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{
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r.run();
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}
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catch (Throwable _)
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{
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// Ignore.
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}
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}
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}
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/**
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* Add a new runnable to the event dispatch queue. The
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* runnable will be invoked in the event dispatch queue
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* without any locks held.
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* @param runner the Runnable to dispatch
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*/
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public static void dispatch(Runnable runner)
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{
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synchronized (queue)
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{
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queue.add(runner);
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}
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}
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}
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