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 * 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 java.util.concurrent.Executor;
19 import java.util.concurrent.ThreadFactory;
20
21 /**
22 * Default implementation of {@link MultithreadEventExecutorGroup} which will use {@link DefaultEventExecutor} instances
23 * to handle the tasks.
24 */
25 public class DefaultEventExecutorGroup extends MultithreadEventExecutorGroup {
26 /**
27 * @see #DefaultEventExecutorGroup(int, ThreadFactory)
28 */
29 public DefaultEventExecutorGroup(int nThreads) {
30 this(nThreads, null);
31 }
32
33 /**
34 * Create a new instance.
35 *
36 * @param nThreads the number of threads that will be used by this instance.
37 * @param threadFactory the ThreadFactory to use, or {@code null} if the default should be used.
38 */
39 public DefaultEventExecutorGroup(int nThreads, ThreadFactory threadFactory) {
40 this(nThreads, threadFactory, SingleThreadEventExecutor.DEFAULT_MAX_PENDING_EXECUTOR_TASKS,
41 RejectedExecutionHandlers.reject());
42 }
43
44 /**
45 * Create a new instance.
46 *
47 * @param nThreads the number of threads that will be used by this instance.
48 * @param threadFactory the ThreadFactory to use, or {@code null} if the default should be used.
49 * @param maxPendingTasks the maximum number of pending tasks before new tasks will be rejected.
50 * @param rejectedHandler the {@link RejectedExecutionHandler} to use.
51 */
52 public DefaultEventExecutorGroup(int nThreads, ThreadFactory threadFactory, int maxPendingTasks,
53 RejectedExecutionHandler rejectedHandler) {
54 super(nThreads, threadFactory, maxPendingTasks, rejectedHandler);
55 }
56
57 @Override
58 protected EventExecutor newChild(Executor executor, Object... args) throws Exception {
59 return new DefaultEventExecutor(this, executor, (Integer) args[0], (RejectedExecutionHandler) args[1]);
60 }
61 }