src/java.base/share/classes/sun/nio/ch/Secrets.java

/*
 * Copyright (c) 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.SocketChannel;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.spi.SelectorProvider;
import java.io.FileDescriptor;
import java.io.IOException;

/**
 * Provides access to implementation private constructors and methods.
 */

public final class Secrets {
    private Secrets() { }

    private static SelectorProvider provider() {
        SelectorProvider p = SelectorProvider.provider();
        if (!(p instanceof SelectorProviderImpl))
            throw new UnsupportedOperationException();
        return p;
    }

    public static SocketChannel newSocketChannel(FileDescriptor fd) {
        try {
            return new SocketChannelImpl(provider(), fd, false);
        } catch (IOException ioe) {
            throw new AssertionError(ioe);
        }
    }

    public static ServerSocketChannel newServerSocketChannel(FileDescriptor fd) {
        try {
            return new ServerSocketChannelImpl(provider(), fd, false);
        } catch (IOException ioe) {
            throw new AssertionError(ioe);
        }
    }
}