/*

 * Copyright (c) 2000, 2002, 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.Channel;

import java.io.FileDescriptor;

import java.io.IOException;

/**

 * An interface that allows translation (and more!).

 *

 * @since 1.4

 */

interface SelChImpl extends Channel {

    FileDescriptor getFD();

    int getFDVal();

    /**

     * Adds the specified ops if present in interestOps. The specified

     * ops are turned on without affecting the other ops.

     *

     * @return  true iff the new value of sk.readyOps() set by this method

     *          contains at least one bit that the previous value did not

     *          contain

     */

    public boolean translateAndUpdateReadyOps(int ops, SelectionKeyImpl sk);

    /**

     * Sets the specified ops if present in interestOps. The specified

     * ops are turned on, and all other ops are turned off.

     *

     * @return  true iff the new value of sk.readyOps() set by this method

     *          contains at least one bit that the previous value did not

     *          contain

     */

    public boolean translateAndSetReadyOps(int ops, SelectionKeyImpl sk);

    void translateAndSetInterestOps(int ops, SelectionKeyImpl sk);

    int validOps();

    void kill() throws IOException;

}