package com.xiaoleilu.hutool.thread; import java.util.concurrent.Callable; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import java.util.concurrent.Future; import com.xiaoleilu.hutool.exceptions.UtilException; /** * 全局公共线程池 * @author Looly * */ public class GlobalThreadPool { private static ExecutorService executor; private GlobalThreadPool() {} static{ init(); } /** * 初始化全局线程池 */ synchronized public static void init(){ if(null != executor){ executor.shutdownNow(); } executor = Executors.newCachedThreadPool(); } /** * 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 */ synchronized public static 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("Exception when running task!", e); } } /** * 执行有返回值的异步方法<br/> * 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 task {@link Callable} * @return Future */ public static <T> Future<T> submit(Callable<T> task) { return executor.submit(task); } /** * 执行有返回值的异步方法<br/> * 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); } }