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