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1   /*
2    * Copyright 2012 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    *   http://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 java.util.concurrent.ThreadFactory;
19  
20  /**
21   * Default {@link SingleThreadEventExecutor} implementation which just execute all submitted task in a
22   * serial fashion
23   *
24   */
25  final class DefaultEventExecutor extends SingleThreadEventExecutor {
26  
27      DefaultEventExecutor(DefaultEventExecutorGroup parent, ThreadFactory threadFactory) {
28          super(parent, threadFactory, true);
29      }
30  
31      DefaultEventExecutor(DefaultEventExecutorGroup parent, ThreadFactory threadFactory, int maxPendingTasks,
32                           RejectedExecutionHandler rejectedExecutionHandler) {
33          super(parent, threadFactory, true, maxPendingTasks, rejectedExecutionHandler);
34      }
35  
36      @Override
37      protected void run() {
38          for (;;) {
39              Runnable task = takeTask();
40              if (task != null) {
41                  task.run();
42                  updateLastExecutionTime();
43              }
44  
45              if (confirmShutdown()) {
46                  break;
47              }
48          }
49      }
50  }