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package com.dahuatech.hutool.core.thread;

import com.dahuatech.hutool.core.exceptions.UtilException;

import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;

/**
 * 全局公共线程池
* 此线程池是一个无限线程池,即加入的线程不等待任何线程,直接执行 * * @author Looly */ public class GlobalThreadPool { private static ExecutorService executor; static { init(); } private GlobalThreadPool() {} /** 初始化全局线程池 */ public static synchronized void init() { if (null != executor) { executor.shutdownNow(); } executor = ExecutorBuilder.create().useSynchronousQueue().build(); } /** * 关闭公共线程池 * * @param isNow 是否立即关闭而不等待正在执行的线程 */ public static synchronized void shutdown(boolean isNow) { if (null != executor) { if (isNow) { executor.shutdownNow(); } else { executor.shutdown(); } } } /** * 获得 {@link ExecutorService} * * @return {@link ExecutorService} */ public static ExecutorService getExecutor() { return executor; } /** * 直接在公共线程池中执行线程 * * @param runnable 可运行对象 */ public static void execute(Runnable runnable) { try { executor.execute(runnable); } catch (Exception e) { throw new UtilException(e, "Exception when running task!"); } } /** * 执行有返回值的异步方法
* Future代表一个异步执行的操作,通过get()方法可以获得操作的结果,如果异步操作还没有完成,则,get()会使当前线程阻塞 * * @param 执行的Task * @param task {@link Callable} * @return Future */ public static Future submit(Callable task) { return executor.submit(task); } /** * 执行有返回值的异步方法
* Future代表一个异步执行的操作,通过get()方法可以获得操作的结果,如果异步操作还没有完成,则,get()会使当前线程阻塞 * * @param runnable 可运行对象 * @return {@link Future} * @since 3.0.5 */ public static Future submit(Runnable runnable) { return executor.submit(runnable); } }




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