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1   /*
2    * junixsocket
3    *
4    * Copyright 2009-2024 Christian Kohlschütter
5    *
6    * Licensed under the Apache License, Version 2.0 (the "License");
7    * you may not use this file except in compliance with the License.
8    * You may obtain a copy of the License at
9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  package org.newsclub.net.unix;
19  
20  import java.io.IOException;
21  import java.nio.channels.DatagramChannel;
22  import java.nio.channels.InterruptibleChannel;
23  import java.nio.channels.SelectableChannel;
24  import java.nio.channels.ServerSocketChannel;
25  import java.nio.channels.SocketChannel;
26  
27  /**
28   * Marker interface that combines junixsocket-based {@link SocketChannel}s, {@link DatagramChannel}s
29   * or {@link ServerSocketChannel}s.
30   *
31   * @author Christian Kohlschütter
32   * @see AFSocketChannel
33   * @see AFServerSocketChannel
34   * @see AFDatagramChannel
35   */
36  public interface AFSomeSocketChannel extends InterruptibleChannel, FileDescriptorAccess,
37      AFSomeSocketThing {
38    /**
39     * Checks if the channel is configured blocking. The result may be cached, and therefore not
40     * invoke native code to check if the underlying socket is actually configured that way.
41     *
42     * @return {@code true} if blocking.
43     */
44    boolean isBlocking();
45  
46    /**
47     * Adjusts this channel's blocking mode.
48     *
49     * <p>
50     * If the given blocking mode is different from the currently cached blocking mode then this
51     * method native code to change it.
52     * </p>
53     *
54     * @param block {@code true} if blocking is desired.
55     * @return This channel.
56     * @throws IOException on error.
57     */
58    SelectableChannel configureBlocking(boolean block) throws IOException;
59  }