--- old/src/java.base/solaris/classes/sun/nio/ch/SolarisAsynchronousChannelProvider.java	2020-05-20 18:10:16.241905948 -0700
+++ /dev/null	2020-03-09 18:57:19.455001459 -0700
@@ -1,93 +0,0 @@
-/*
- * Copyright (c) 2008, 2010, Oracle and/or its affiliates. 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.  Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package sun.nio.ch;
-
-import java.nio.channels.*;
-import java.nio.channels.spi.AsynchronousChannelProvider;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.ThreadFactory;
-import java.io.IOException;
-
-public class SolarisAsynchronousChannelProvider
-    extends AsynchronousChannelProvider
-{
-    private static volatile SolarisEventPort defaultEventPort;
-
-    private SolarisEventPort defaultEventPort() throws IOException {
-        if (defaultEventPort == null) {
-            synchronized (SolarisAsynchronousChannelProvider.class) {
-                if (defaultEventPort == null) {
-                    defaultEventPort =
-                        new SolarisEventPort(this, ThreadPool.getDefault()).start();
-                }
-            }
-        }
-        return defaultEventPort;
-    }
-
-    public SolarisAsynchronousChannelProvider() {
-    }
-
-    @Override
-    public AsynchronousChannelGroup openAsynchronousChannelGroup(int nThreads, ThreadFactory factory)
-        throws IOException
-    {
-        return new SolarisEventPort(this, ThreadPool.create(nThreads, factory)).start();
-    }
-
-    @Override
-    public AsynchronousChannelGroup openAsynchronousChannelGroup(ExecutorService executor, int initialSize)
-        throws IOException
-    {
-        return new SolarisEventPort(this, ThreadPool.wrap(executor, initialSize)).start();
-    }
-
-    private SolarisEventPort toEventPort(AsynchronousChannelGroup group)
-        throws IOException
-    {
-        if (group == null) {
-            return defaultEventPort();
-        } else {
-            if (!(group instanceof SolarisEventPort))
-                throw new IllegalChannelGroupException();
-            return (SolarisEventPort)group;
-        }
-    }
-
-    @Override
-    public AsynchronousServerSocketChannel openAsynchronousServerSocketChannel(AsynchronousChannelGroup group)
-        throws IOException
-    {
-        return new UnixAsynchronousServerSocketChannelImpl(toEventPort(group));
-    }
-
-    @Override
-    public AsynchronousSocketChannel openAsynchronousSocketChannel(AsynchronousChannelGroup group)
-        throws IOException
-    {
-        return new UnixAsynchronousSocketChannelImpl(toEventPort(group));
-    }
-}