--- a/jdk/src/share/classes/com/sun/jmx/event/LeaseRenewer.java	Wed Oct 21 16:28:57 2009 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,143 +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.Callable;
-import java.util.concurrent.ScheduledExecutorService;
-import java.util.concurrent.ScheduledFuture;
-import java.util.concurrent.TimeUnit;
-
-/**
- *
- * @author sjiang
- */
-public class LeaseRenewer {
-    public LeaseRenewer(ScheduledExecutorService scheduler, Callable<Long> doRenew) {
-        if (logger.traceOn()) {
-            logger.trace("LeaseRenewer", "New LeaseRenewer.");
-        }
-
-        if (doRenew == null) {
-            throw new NullPointerException("Null job to call server.");
-        }
-
-        this.doRenew = doRenew;
-        nextRenewTime = System.currentTimeMillis();
-
-        this.scheduler = scheduler;
-        future = this.scheduler.schedule(myRenew, 0, TimeUnit.MILLISECONDS);
-    }
-
-    public void close() {
-        if (logger.traceOn()) {
-            logger.trace("close", "Close the lease.");
-        }
-
-        synchronized(lock) {
-            if (closed) {
-                return;
-            } else {
-                closed = true;
-            }
-        }
-
-        try {
-            future.cancel(false); // not interrupt if running
-        } catch (Exception e) {
-            // OK
-            if (logger.debugOn()) {
-                logger.debug("close", "Failed to cancel the leasing job.", e);
-            }
-        }
-    }
-
-    public boolean closed() {
-        synchronized(lock) {
-            return closed;
-        }
-    }
-
-    // ------------------------------
-    // private
-    // ------------------------------
-    private final Runnable myRenew = new Runnable() {
-        public void run() {
-            synchronized(lock) {
-                if (closed()) {
-                    return;
-                }
-            }
-
-            long next = nextRenewTime - System.currentTimeMillis();
-            if (next < MIN_MILLIS) {
-                try {
-                    if (logger.traceOn()) {
-                        logger.trace("myRenew-run", "");
-                    }
-                    next = doRenew.call().longValue();
-
-                } catch (Exception e) {
-                    logger.fine("myRenew-run", "Failed to renew lease", e);
-                    close();
-                }
-
-                if (next > 0 && next < Long.MAX_VALUE) {
-                    next = next/2;
-                    next = (next < MIN_MILLIS) ? MIN_MILLIS : next;
-                } else {
-                    close();
-                }
-            }
-
-            nextRenewTime = System.currentTimeMillis() + next;
-
-            if (logger.traceOn()) {
-                logger.trace("myRenew-run", "Next leasing: "+next);
-            }
-
-            synchronized(lock) {
-                if (!closed) {
-                    future = scheduler.schedule(this, next, TimeUnit.MILLISECONDS);
-                }
-            }
-        }
-    };
-
-    private final Callable<Long> doRenew;
-    private ScheduledFuture<?> future;
-    private boolean closed = false;
-    private long nextRenewTime;
-
-    private final int[] lock = new int[0];
-
-    private final ScheduledExecutorService scheduler;
-
-    private static final long MIN_MILLIS = 50;
-
-    private static final ClassLogger logger =
-            new ClassLogger("javax.management.event", "LeaseRenewer");
-}