com.sun.grizzly.http.StatsThreadPool Maven / Gradle / Ivy

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/*
 * 
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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 * Copyright 2007-2008 Sun Microsystems, Inc. All rights reserved.
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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
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 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
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package com.sun.grizzly.http;

import com.sun.grizzly.util.DefaultThreadPool;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;
import java.security.AccessController;
import java.security.PrivilegedAction;

/**
 * Internal FIFO used by the Worker Threads to pass information
 * between {@link Task} objects.
 *
 * @author Jean-Francois Arcand
 */
public class StatsThreadPool extends DefaultThreadPool {
    
    /**
     * Port, which is served by this thread pool
     */
    protected int port;

    /**
     * The {@link ThreadPoolStatistic} objects used when gathering statistics.
     */
    protected transient ThreadPoolStatistic threadPoolStat;

    public StatsThreadPool() {
        this(DEFAULT_MAX_TASKS_QUEUED);
    }

    public StatsThreadPool(int maxTasksCount) {
        this(DEFAULT_MIN_THREAD_COUNT, DEFAULT_MAX_THREAD_COUNT, maxTasksCount,
                DEFAULT_IDLE_THREAD_KEEPALIVE_TIMEOUT, TimeUnit.MILLISECONDS);
    }

    public StatsThreadPool(int corePoolSize, int maximumPoolSize,
            int maxTasksCount, long keepAliveTime, TimeUnit unit) {
        this("Grizzly", corePoolSize, maximumPoolSize, maxTasksCount,
                keepAliveTime, unit);
    }

    public StatsThreadPool(String name, int corePoolSize, int maximumPoolSize,
            int maxTasksCount, long keepAliveTime, TimeUnit unit) {
        super(name, corePoolSize, maximumPoolSize,
                keepAliveTime, unit, null,
                new LinkedBlockingQueue(maxTasksCount));
        setThreadFactory(new HttpWorkerThreadFactory());
    }

    /**
     * Get the port number, which is served by the thread pool
     * @return the port number, which is served by the thread pool
     */
    public int getPort() {
        return port;
    }

    /**
     * Set the port number, which is served by the thread pool
     * @param port the port number, which is served by the thread pool
     */
    public void setPort(int port) {
        this.port = port;
    }

    
    /**
     * Set the {@link ThreadPoolStatistic} object used
     * to gather statistic;
     */
    public void setStatistic(ThreadPoolStatistic threadPoolStatistic){
        this.threadPoolStat = threadPoolStatistic;
    }
    
    
    /**
     * Return the {@link ThreadPoolStatistic} object used
     * to gather statistic;
     */
    public ThreadPoolStatistic getStatistic(){
        return threadPoolStat;
    }

    /**
     * Create new {@link HttpWorkerThread}.
     */
    protected class HttpWorkerThreadFactory implements ThreadFactory {
        public Thread newThread(final Runnable r) {
            return AccessController.doPrivileged(
                    new PrivilegedAction() {
                        public Thread run() {
                            Thread thread = new HttpWorkerThread( StatsThreadPool.this,
                                                                  name + "-" + port + "-WorkerThread(" +
                                                                  workerThreadCounter.getAndIncrement() + ")", r,
                                                                  initialByteBufferSize );
                            thread.setUncaughtExceptionHandler( StatsThreadPool.this );
                            thread.setPriority( priority );
                            thread.setContextClassLoader( HttpWorkerThreadFactory.class.getClassLoader() );
                            return thread;
                        }
                    }
            );
        }
    }

    @Override
    public String toString() {
        StringBuilder builder = new StringBuilder(512);
        builder.append("StatsThreadPool[");
        injectToStringAttributes(builder);
        builder.append(']');
        return builder.toString();
    }


    @Override
    protected void injectToStringAttributes(StringBuilder sb) {
        super.injectToStringAttributes(sb);
        sb.append(", port=").append(port);
    }


}