/*
|
* CDDL HEADER START
|
*
|
* The contents of this file are subject to the terms of the
|
* Common Development and Distribution License, Version 1.0 only
|
* (the "License"). You may not use this file except in compliance
|
* with the License.
|
*
|
* You can obtain a copy of the license at
|
* trunk/opends/resource/legal-notices/OpenDS.LICENSE
|
* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
|
* See the License for the specific language governing permissions
|
* and limitations under the License.
|
*
|
* When distributing Covered Code, include this CDDL HEADER in each
|
* file and include the License file at
|
* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
|
* add the following below this CDDL HEADER, with the fields enclosed
|
* by brackets "[]" replaced with your own identifying information:
|
* Portions Copyright [yyyy] [name of copyright owner]
|
*
|
* CDDL HEADER END
|
*
|
*
|
* Copyright 2010 Sun Microsystems, Inc.
|
*/
|
|
package com.sun.opends.sdk.ldap;
|
|
|
|
import java.util.concurrent.TimeUnit;
|
import java.util.concurrent.locks.Condition;
|
import java.util.concurrent.locks.ReentrantLock;
|
|
import com.sun.grizzly.utils.LinkedTransferQueue;
|
import com.sun.opends.sdk.util.StaticUtils;
|
|
|
|
/**
|
* Checks connection for pending requests that have timed out.
|
*/
|
final class TimeoutChecker
|
{
|
static final TimeoutChecker INSTANCE = new TimeoutChecker();
|
|
private final LinkedTransferQueue<LDAPConnection> connections;
|
private transient final ReentrantLock lock;
|
private transient final Condition available;
|
|
|
|
private TimeoutChecker()
|
{
|
this.connections = new LinkedTransferQueue<LDAPConnection>();
|
this.lock = new ReentrantLock();
|
this.available = lock.newCondition();
|
|
final Thread checkerThread = new Thread("Timeout Checker")
|
{
|
@Override
|
public void run()
|
{
|
StaticUtils.DEBUG_LOG.fine("Timeout Checker Starting");
|
final ReentrantLock lock = TimeoutChecker.this.lock;
|
lock.lock();
|
try
|
{
|
while (true)
|
{
|
final long currentTime = System.currentTimeMillis();
|
long delay = 0;
|
|
for (final LDAPConnection connection : connections)
|
{
|
StaticUtils.DEBUG_LOG.finer("Checking connection " + connection
|
+ " delay = " + delay);
|
final long newDelay = connection
|
.cancelExpiredRequests(currentTime);
|
if (newDelay > 0)
|
{
|
if (delay > 0)
|
{
|
delay = Math.min(newDelay, delay);
|
}
|
else
|
{
|
delay = newDelay;
|
}
|
}
|
}
|
|
try
|
{
|
if (delay <= 0)
|
{
|
StaticUtils.DEBUG_LOG.finer("There are no connections with "
|
+ "timeout specified. Sleeping");
|
available.await();
|
}
|
else
|
{
|
StaticUtils.DEBUG_LOG.finer("Sleeping for " + delay + "ms");
|
available.await(delay, TimeUnit.MILLISECONDS);
|
}
|
}
|
catch (final InterruptedException e)
|
{
|
// Just go around again.
|
}
|
}
|
}
|
finally
|
{
|
lock.unlock();
|
}
|
}
|
};
|
|
checkerThread.setDaemon(true);
|
checkerThread.start();
|
}
|
|
|
|
void addConnection(final LDAPConnection connection)
|
{
|
final ReentrantLock lock = this.lock;
|
lock.lock();
|
try
|
{
|
connections.add(connection);
|
available.signalAll();
|
}
|
finally
|
{
|
lock.unlock();
|
}
|
}
|
|
|
|
void removeConnection(final LDAPConnection connection)
|
{
|
final ReentrantLock lock = this.lock;
|
lock.lock();
|
try
|
{
|
connections.remove(connection);
|
}
|
finally
|
{
|
lock.unlock();
|
}
|
}
|
}
|
