Package com.alibaba.dubbo.common.threadpool.support.fixed

Source Code of com.alibaba.dubbo.common.threadpool.support.fixed.FixedThreadPool

/*
* Copyright 1999-2011 Alibaba 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.alibaba.dubbo.common.threadpool.support.fixed;

import java.util.concurrent.Executor;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.SynchronousQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

import com.alibaba.dubbo.common.Constants;
import com.alibaba.dubbo.common.URL;
import com.alibaba.dubbo.common.threadpool.ThreadPool;
import com.alibaba.dubbo.common.threadpool.support.AbortPolicyWithReport;
import com.alibaba.dubbo.common.utils.NamedThreadFactory;

/**
* FixedThreadPool
*
* @see java.util.concurrent.Executors#newFixedThreadPool(int)
* @author william.liangf
*/
public class FixedThreadPool implements ThreadPool {

    public Executor getExecutor(URL url) {
        String threadName = url.getParameter(Constants.THREAD_NAME_KEY, Constants.DEFAULT_THREAD_NAME);
        int threads = url.getParameter(Constants.THREADS_KEY, Constants.DEFAULT_THREADS);
        int queues = url.getParameter(Constants.QUEUES_KEY, Constants.DEFAULT_QUEUES);
        return new ThreadPoolExecutor(threads, threads, Constants.DEFAULT_THREAD_ALIVE, TimeUnit.MILLISECONDS,
                                      queues <= 0 ? new SynchronousQueue<Runnable>() : new LinkedBlockingQueue<Runnable>(queues),
                               new NamedThreadFactory(threadName, true), new AbortPolicyWithReport(threadName, url));
    }

}
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