001/* 002 * ==================================================================== 003 * Licensed to the Apache Software Foundation (ASF) under one 004 * or more contributor license agreements. See the NOTICE file 005 * distributed with this work for additional information 006 * regarding copyright ownership. The ASF licenses this file 007 * to you under the Apache License, Version 2.0 (the 008 * "License"); you may not use this file except in compliance 009 * with the License. You may obtain a copy of the License at 010 * 011 * http://www.apache.org/licenses/LICENSE-2.0 012 * 013 * Unless required by applicable law or agreed to in writing, 014 * software distributed under the License is distributed on an 015 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 016 * KIND, either express or implied. See the License for the 017 * specific language governing permissions and limitations 018 * under the License. 019 * ==================================================================== 020 * 021 * This software consists of voluntary contributions made by many 022 * individuals on behalf of the Apache Software Foundation. For more 023 * information on the Apache Software Foundation, please see 024 * <http://www.apache.org/>. 025 * 026 */ 027package org.apache.http.impl.bootstrap; 028 029import java.util.HashSet; 030import java.util.Map; 031import java.util.Set; 032import java.util.concurrent.BlockingQueue; 033import java.util.concurrent.ConcurrentHashMap; 034import java.util.concurrent.ThreadFactory; 035import java.util.concurrent.ThreadPoolExecutor; 036import java.util.concurrent.TimeUnit; 037 038/** 039 * @since 4.4 040 */ 041class WorkerPoolExecutor extends ThreadPoolExecutor { 042 043 private final Map<Worker, Boolean> workerSet; 044 045 public WorkerPoolExecutor( 046 final int corePoolSize, 047 final int maximumPoolSize, 048 final long keepAliveTime, 049 final TimeUnit unit, 050 final BlockingQueue<Runnable> workQueue, 051 final ThreadFactory threadFactory) { 052 super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, threadFactory); 053 this.workerSet = new ConcurrentHashMap<Worker, Boolean>(); 054 } 055 056 @Override 057 protected void beforeExecute(final Thread t, final Runnable r) { 058 if (r instanceof Worker) { 059 this.workerSet.put((Worker) r, Boolean.TRUE); 060 } 061 } 062 063 @Override 064 protected void afterExecute(final Runnable r, final Throwable t) { 065 if (r instanceof Worker) { 066 this.workerSet.remove(r); 067 } 068 } 069 070 public Set<Worker> getWorkers() { 071 return new HashSet<Worker>(this.workerSet.keySet()); 072 } 073 074}