1 /*
2 * Copyright 2022 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package io.netty5.channel.nio;
17
18 import java.nio.channels.ClosedChannelException;
19 import java.nio.channels.SelectionKey;
20 import java.nio.channels.Selector;
21
22
23 /**
24 * Process IO.
25 */
26 interface NioProcessor {
27
28 /**
29 * Register to a {@link Selector}.
30 *
31 * @param selector the {@link Selector} to register to.
32 * @throws ClosedChannelException if already closed.
33 */
34 void register(Selector selector) throws ClosedChannelException;
35
36 /**
37 * Deregister from previous registered {@link Selector}.
38 */
39 void deregister();
40
41 /**
42 * Handle some IO for the given {@link SelectionKey}.
43 *
44 * @param key the {@link SelectionKey} that needs to be handled.
45 */
46 void handle(SelectionKey key);
47
48 /**
49 * Close this processor.
50 */
51 void close();
52 }