--- a/jdk/src/share/classes/com/sun/jmx/event/RepeatedSingletonJob.java	Wed Oct 21 15:47:09 2009 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,119 +0,0 @@
-/*
- * Copyright 2007-2008 Sun Microsystems, Inc.  All Rights Reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.  Sun designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Sun in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- */
-
-package com.sun.jmx.event;
-
-import com.sun.jmx.remote.util.ClassLogger;
-import java.util.concurrent.Executor;
-import java.util.concurrent.RejectedExecutionException;
-
-/**
- * <p>A task that is repeatedly run by an Executor.  The task will be
- * repeated as long as the {@link #isSuspended()} method returns true.  Once
- * that method returns false, the task is no longer executed until someone
- * calls {@link #resume()}.</p>
- * @author sjiang
- */
-public abstract class RepeatedSingletonJob implements Runnable {
-    public RepeatedSingletonJob(Executor executor) {
-        if (executor == null) {
-            throw new NullPointerException("Null executor!");
-        }
-
-        this.executor = executor;
-    }
-
-    public boolean isWorking() {
-        return working;
-    }
-
-    public void resume() {
-
-        synchronized(this) {
-            if (!working)  {
-                if (logger.traceOn()) {
-                    logger.trace("resume", "");
-                }
-                working = true;
-                execute();
-            }
-        }
-    }
-
-    public abstract void task();
-    public abstract boolean isSuspended();
-
-    public void run() {
-        if (logger.traceOn()) {
-            logger.trace("run", "execute the task");
-        }
-        try {
-            task();
-        } catch (Exception e) {
-            // A correct task() implementation should not throw exceptions.
-            // It may cause isSuspended() to start returning true, though.
-            logger.trace("run", "failed to execute the task", e);
-        }
-
-        synchronized(this) {
-            if (!isSuspended()) {
-                execute();
-            } else {
-                if (logger.traceOn()) {
-                    logger.trace("run", "suspend the task");
-                }
-                working = false;
-            }
-        }
-
-    }
-
-    private void execute() {
-        try {
-            executor.execute(this);
-        } catch (RejectedExecutionException e) {
-            logger.warning(
-                    "execute",
-                    "Executor threw exception (" + this.getClass().getName() + ")",
-                    e);
-            throw new RejectedExecutionException(
-                    "Executor.execute threw exception -" +
-                    "should not be possible", e);
-            // User-supplied Executor should not be configured in a way that
-            // might cause this exception, for example if it is shared between
-            // several client objects and doesn't have capacity for one job
-            // from each one.  CR 6732037 will add text to the spec explaining
-            // the problem.  The rethrown exception will propagate either out
-            // of resume() to user code, or out of run() to the Executor
-            // (which will probably ignore it).
-        }
-    }
-
-    private boolean working = false;
-    private final Executor executor;
-
-    private static final ClassLogger logger =
-            new ClassLogger("javax.management.event", "RepeatedSingletonJob");
-}