1 /*
2 * ====================================================================
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 * ====================================================================
20 *
21 * This software consists of voluntary contributions made by many
22 * individuals on behalf of the Apache Software Foundation. For more
23 * information on the Apache Software Foundation, please see
24 * <http://www.apache.org/>.
25 *
26 */
27 package org.apache.http.impl.bootstrap;
28
29 import java.util.HashSet;
30 import java.util.Map;
31 import java.util.Set;
32 import java.util.concurrent.BlockingQueue;
33 import java.util.concurrent.ConcurrentHashMap;
34 import java.util.concurrent.ThreadFactory;
35 import java.util.concurrent.ThreadPoolExecutor;
36 import java.util.concurrent.TimeUnit;
37
38 /**
39 * @since 4.4
40 */
41 class WorkerPoolExecutor extends ThreadPoolExecutor {
42
43 private final Map<Worker, Boolean> workerSet;
44
45 public WorkerPoolExecutor(
46 final int corePoolSize,
47 final int maximumPoolSize,
48 final long keepAliveTime,
49 final TimeUnit unit,
50 final BlockingQueue<Runnable> workQueue,
51 final ThreadFactory threadFactory) {
52 super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, threadFactory);
53 this.workerSet = new ConcurrentHashMap<Worker, Boolean>();
54 }
55
56 @Override
57 protected void beforeExecute(final Thread t, final Runnable r) {
58 if (r instanceof Worker) {
59 this.workerSet.put((Worker) r, Boolean.TRUE);
60 }
61 }
62
63 @Override
64 protected void afterExecute(final Runnable r, final Throwable t) {
65 if (r instanceof Worker) {
66 this.workerSet.remove(r);
67 }
68 }
69
70 public Set<Worker> getWorkers() {
71 return new HashSet<Worker>(this.workerSet.keySet());
72 }
73
74 }