1 /*
2 * Copyright 2024 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.netty.channel.uring;
17
18 import java.nio.ByteBuffer;
19
20 interface CompletionCallback {
21 /**
22 * Called for a completion event that was put into the {@link CompletionQueue}.
23 *
24 * @param res the result of the completion event.
25 * @param flags the flags
26 * @param udata the user data that was provided as part of the submission
27 * @param extraCqeData the extra data for the CQE. This will only be non-null of the ring was setup with
28 * {@code IORING_SETUP_CQE32}.
29 * @return {@code true} if we more data (in a loop) can be handled be this callback, {@code false}
30 * otherwise.
31 */
32 boolean handle(int res, int flags, long udata, ByteBuffer extraCqeData);
33 }