com.xiaoleilu.hutool.thread.GlobalThreadPool Maven / Gradle / Ivy
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
* 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);
}
}