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Bare minimum core library needed to sending metrics to SignalFx from Java clients

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//
//  ========================================================================
//  Copyright (c) 1995-2022 Mort Bay Consulting Pty Ltd and others.
//  ------------------------------------------------------------------------
//  All rights reserved. This program and the accompanying materials
//  are made available under the terms of the Eclipse Public License v1.0
//  and Apache License v2.0 which accompanies this distribution.
//
//      The Eclipse Public License is available at
//      http://www.eclipse.org/legal/epl-v10.html
//
//      The Apache License v2.0 is available at
//      http://www.opensource.org/licenses/apache2.0.php
//
//  You may elect to redistribute this code under either of these licenses.
//  ========================================================================
//

package com.signalfx.shaded.jetty.util.preventers;

/**
 * Java2DLeakPreventer
 *
 * Prevent pinning of webapp classloader by pre-loading sun.java2d.Disposer class
 * before webapp classloaders are created.
 *
 * See https://issues.apache.org/bugzilla/show_bug.cgi?id=51687
 * 
 * @deprecated fixed in jdk 9, see https://bugs.java.com/bugdatabase/view_bug.do?bug_id=6489540
 * 
 */
@Deprecated
public class Java2DLeakPreventer extends AbstractLeakPreventer
{

    /**
     * @see org.eclipse.jetty.util.preventers.AbstractLeakPreventer#prevent(java.lang.ClassLoader)
     */
    @Override
    public void prevent(ClassLoader loader)
    {
        try
        {
            Class.forName("sun.java2d.Disposer", true, loader);
        }
        catch (ClassNotFoundException e)
        {
            LOG.ignore(e);
        }
    }
}