com.roncoo.pay.app.settlement.utils.SettThreadPoolExecutor.java Source code

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Here is the source code for com.roncoo.pay.app.settlement.utils.SettThreadPoolExecutor.java

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/*
 * Copyright 2015-2102 RonCoo(http://www.roncoo.com) Group.
 *  
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *  
 *      http://www.apache.org/licenses/LICENSE-2.0
 *  
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.roncoo.pay.app.settlement.utils;

import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * 
 * www.roncoo.com
 * @author zenghao
 */
public class SettThreadPoolExecutor {
    private static final Log LOG = LogFactory.getLog(SettThreadPoolExecutor.class);
    /**
     * ThreadMax 1080.8
     */
    private int notifyRadio = 4;

    /**
     * .<br/>
     * ???corePoolSize?.
     */
    private int corePoolSize;

    /**
     * ?.<br/>
     * ??corePoolSizeworkQueue?workQueue??.
     */
    private int workQueueSize;

    /**
     * .<br/>
     * workQueue??<br/>
     * ??maximumPoolSizeRejectedExecutionHandler????.
     */
    private int maxPoolSize;

    /**
     * ?,??.<br/>
     * ?corePoolSizekeepAliveTime???.
     */
    private long keepAliveTime;

    private ThreadPoolExecutor executor = null;

    public void init() {
        if (workQueueSize < 1) {
            workQueueSize = 1000;
        }
        if (this.keepAliveTime < 1) {
            this.keepAliveTime = 1000;
        }
        int coreSize = 0;
        if (this.corePoolSize < 1) {
            coreSize = Runtime.getRuntime().availableProcessors();
            maxPoolSize = Math.round(((float) (coreSize * notifyRadio)) / 10);
            corePoolSize = coreSize / 4;
            if (corePoolSize < 1) {
                corePoolSize = 1;
            }
        }

        // NOTICE: corePoolSize?maxPoolSize?
        if (maxPoolSize < corePoolSize) {
            maxPoolSize = corePoolSize;
        }

        /**
         * ThreadPoolExecutor??BlockingQueue????workQueue.take()?
         */
        BlockingQueue<Runnable> notifyWorkQueue = new ArrayBlockingQueue<Runnable>(workQueueSize);

        executor = new ThreadPoolExecutor(corePoolSize, maxPoolSize, keepAliveTime, TimeUnit.SECONDS,
                notifyWorkQueue, new ThreadPoolExecutor.CallerRunsPolicy());

        LOG.info("NotifyExecutor Info : CPU = " + coreSize + " | corePoolSize = " + corePoolSize
                + " | maxPoolSize = " + maxPoolSize + " | workQueueSize = " + workQueueSize);
    }

    public void destroy() {
        executor.shutdownNow();
    }

    public void execute(Runnable command) {
        executor.execute(command);
    }

    public void showExecutorInfo() {
        LOG.info("NotifyExecutor Info : corePoolSize = " + corePoolSize + " | maxPoolSize = " + maxPoolSize
                + " | workQueueSize = " + workQueueSize + " | taskCount = " + executor.getTaskCount()
                + " | activeCount = " + executor.getActiveCount() + " | completedTaskCount = "
                + executor.getCompletedTaskCount());
    }

    public void setNotifyRadio(int notifyRadio) {
        this.notifyRadio = notifyRadio;
    }

    public void setWorkQueueSize(int workQueueSize) {
        this.workQueueSize = workQueueSize;
    }

    public void setKeepAliveTime(long keepAliveTime) {
        this.keepAliveTime = keepAliveTime;
    }

    public void setCorePoolSize(int corePoolSize) {
        this.corePoolSize = corePoolSize;
    }

    public void setMaxPoolSize(int maxPoolSize) {
        this.maxPoolSize = maxPoolSize;
    }
}