com.vip.vjtools.vjkit.concurrent.threadpool

Class ThreadPoolUtil

java.lang.Object

com.vip.vjtools.vjkit.concurrent.threadpool.ThreadPoolUtil

public class ThreadPoolUtil
extends Object

线程池工具集 1. 优雅关闭线程池的(via guava) 2. 创建可自定义线程名的ThreadFactory(via guava) 3. 防止第三方Runnable未捕捉异常导致线程跑飞

Author:

calvin

Constructor Summary

Constructors

Constructor and Description
ThreadPoolUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static ThreadFactory	buildThreadFactory(String threadNamePrefix) 创建ThreadFactory，使得创建的线程有自己的名字而不是默认的"pool-x-thread-y" 使用了Guava的工具类
static ThreadFactory	buildThreadFactory(String threadNamePrefix, boolean daemon) 可设定是否daemon, daemon线程在主线程已执行完毕时, 不会阻塞应用不退出, 而非daemon线程则会阻塞.
static boolean	gracefulShutdown(ExecutorService threadPool, int shutdownTimeoutMills) 按照ExecutorService JavaDoc示例代码编写的Graceful Shutdown方法.
static boolean	gracefulShutdown(ExecutorService threadPool, int shutdownTimeout, TimeUnit timeUnit)
static Runnable	safeRunnable(Runnable runnable) 防止用户没有捕捉异常导致中断了线程池中的线程, 使得SchedulerService无法继续执行.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ThreadPoolUtil

public ThreadPoolUtil()

Method Detail

gracefulShutdown

public static boolean gracefulShutdown(ExecutorService threadPool,
                       int shutdownTimeoutMills)

按照ExecutorService JavaDoc示例代码编写的Graceful Shutdown方法. 先使用shutdown, 停止接收新任务并尝试完成所有已存在任务. 如果1/2超时时间后, 则调用shutdownNow,取消在workQueue中Pending的任务,并中断所有阻塞函数. 如果1/2超时仍然超時，則強制退出. 另对在shutdown时线程本身被调用中断做了处理. 返回线程最后是否被中断. 使用了Guava的工具类

See Also:

MoreExecutors.shutdownAndAwaitTermination(ExecutorService, long, TimeUnit)

gracefulShutdown

public static boolean gracefulShutdown(ExecutorService threadPool,
                       int shutdownTimeout,
                       TimeUnit timeUnit)

See Also:

gracefulShutdown

buildThreadFactory

public static ThreadFactory buildThreadFactory(String threadNamePrefix)

创建ThreadFactory，使得创建的线程有自己的名字而不是默认的"pool-x-thread-y" 使用了Guava的工具类

See Also:

ThreadFactoryBuilder.build()

buildThreadFactory

public static ThreadFactory buildThreadFactory(String threadNamePrefix,
                               boolean daemon)

可设定是否daemon, daemon线程在主线程已执行完毕时, 不会阻塞应用不退出, 而非daemon线程则会阻塞.

See Also:

buildThreadFactory

safeRunnable

public static Runnable safeRunnable(Runnable runnable)

防止用户没有捕捉异常导致中断了线程池中的线程, 使得SchedulerService无法继续执行. 在无法控制第三方包的Runnable实现时，调用本函数进行包裹.