1 /*
2 * Copyright 2013 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.util.concurrent;
17
18 import io.netty.util.internal.ObjectUtil;
19
20 import java.util.concurrent.Executor;
21
22 /**
23 * {@link Executor} which execute tasks in the callers thread.
24 */
25 public final class ImmediateExecutor implements Executor {
26 public static final ImmediateExecutor INSTANCE = new ImmediateExecutor();
27
28 private ImmediateExecutor() {
29 // use static instance
30 }
31
32 @Override
33 public void execute(Runnable command) {
34 ObjectUtil.checkNotNull(command, "command").run();
35 }
36 }