net.e6tech.elements.common.util.concurrent

Class ThreadPool

java.lang.Object

net.e6tech.elements.common.util.concurrent.ThreadPool

All Implemented Interfaces:

java.util.concurrent.Executor, java.util.concurrent.ExecutorService, java.util.concurrent.ThreadFactory

public class ThreadPool
extends java.lang.Object
implements java.util.concurrent.ThreadFactory, java.util.concurrent.ExecutorService

Created by futeh.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ThreadPool(java.lang.String name, java.util.function.Function<java.util.concurrent.ThreadFactory,java.util.concurrent.ExecutorService> newPool)
protected	ThreadPool(java.lang.ThreadGroup threadGroup, java.lang.String name, java.util.function.Function<java.util.concurrent.ThreadFactory,java.util.concurrent.ExecutorService> newPool)

Method Summary

Modifier and Type	Method and Description
<U> Async<U>	async(U service)
boolean	awaitTermination(long timeout, java.util.concurrent.TimeUnit unit)
static ThreadPool	cachedThreadPool(java.lang.String name) Return a thread pool that supports unlimited number of threads.
ThreadPool	daemon()
ThreadPool	daemon(boolean b)
void	execute(java.lang.Runnable command)
static ThreadPool	fixedThreadPool(java.lang.String name, int nThreads) Returns a fixed size pool.
<T> java.util.List<java.util.concurrent.Future<T>>	invokeAll(java.util.Collection<? extends java.util.concurrent.Callable<T>> tasks)
<T> java.util.List<java.util.concurrent.Future<T>>	invokeAll(java.util.Collection<? extends java.util.concurrent.Callable<T>> tasks, long timeout, java.util.concurrent.TimeUnit unit)
<T> T	invokeAny(java.util.Collection<? extends java.util.concurrent.Callable<T>> tasks)
<T> T	invokeAny(java.util.Collection<? extends java.util.concurrent.Callable<T>> tasks, long timeout, java.util.concurrent.TimeUnit unit)
boolean	isShutdown()
boolean	isTerminated()
java.lang.Thread	newThread(java.lang.Runnable runnable)
static ThreadPool	rateLimitedThreadPool(java.lang.String name, int threadCoreSize, int threadMaxSize, long threadKeepAliveSec, int threadQueueSize)
ThreadPool	rejectedExecutionHandler(java.util.concurrent.RejectedExecutionHandler handler)
void	shutdown()
java.util.List<java.lang.Runnable>	shutdownNow()
<T> java.util.concurrent.Future<T>	submit(java.util.concurrent.Callable<T> task)
java.util.concurrent.Future<?>	submit(java.lang.Runnable task)
<T> java.util.concurrent.Future<T>	submit(java.lang.Runnable task, T result)
ThreadPool	threadGroup(java.lang.ThreadGroup threadGroup)
<T extends java.util.concurrent.ExecutorService> T	unwrap()

Methods inherited from class java.lang.Object

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

Constructor Detail

ThreadPool

protected ThreadPool(java.lang.ThreadGroup threadGroup,
                     java.lang.String name,
                     java.util.function.Function<java.util.concurrent.ThreadFactory,java.util.concurrent.ExecutorService> newPool)

ThreadPool

protected ThreadPool(java.lang.String name,
                     java.util.function.Function<java.util.concurrent.ThreadFactory,java.util.concurrent.ExecutorService> newPool)

Method Detail

cachedThreadPool

public static ThreadPool cachedThreadPool(java.lang.String name)

Return a thread pool that supports unlimited number of threads. It will create threads as needed. The default keep alive time for a thread is 60 seconds.

Parameters:

name - name of the pool

Returns:

ThreadPool

rateLimitedThreadPool

public static ThreadPool rateLimitedThreadPool(java.lang.String name,
                                               int threadCoreSize,
                                               int threadMaxSize,
                                               long threadKeepAliveSec,
                                               int threadQueueSize)

fixedThreadPool

public static ThreadPool fixedThreadPool(java.lang.String name,
                                         int nThreads)

Returns a fixed size pool. If there are more requests than the number of threads, they are put into a queue to be processed when a thread becomes available.

Parameters:

name - name of the pool

nThreads - number of threads

Returns:

ThreadPool

daemon

public ThreadPool daemon()

daemon

public ThreadPool daemon(boolean b)

threadGroup

public ThreadPool threadGroup(java.lang.ThreadGroup threadGroup)

rejectedExecutionHandler

public ThreadPool rejectedExecutionHandler(java.util.concurrent.RejectedExecutionHandler handler)

async

public <U> Async<U> async(U service)

unwrap

public <T extends java.util.concurrent.ExecutorService> T unwrap()

newThread

public java.lang.Thread newThread(java.lang.Runnable runnable)

Specified by:

newThread in interface java.util.concurrent.ThreadFactory

shutdown

public void shutdown()

Specified by:

shutdown in interface java.util.concurrent.ExecutorService

shutdownNow

public java.util.List<java.lang.Runnable> shutdownNow()

Specified by:

shutdownNow in interface java.util.concurrent.ExecutorService

isShutdown

public boolean isShutdown()

Specified by:

isShutdown in interface java.util.concurrent.ExecutorService

isTerminated

public boolean isTerminated()

Specified by:

isTerminated in interface java.util.concurrent.ExecutorService

awaitTermination

public boolean awaitTermination(long timeout,
                                java.util.concurrent.TimeUnit unit)
                         throws java.lang.InterruptedException

Specified by:

awaitTermination in interface java.util.concurrent.ExecutorService

Throws:

java.lang.InterruptedException

submit

public <T> java.util.concurrent.Future<T> submit(java.util.concurrent.Callable<T> task)

Specified by:

submit in interface java.util.concurrent.ExecutorService

submit

public <T> java.util.concurrent.Future<T> submit(java.lang.Runnable task,
                                                 T result)

Specified by:

submit in interface java.util.concurrent.ExecutorService

submit

public java.util.concurrent.Future<?> submit(java.lang.Runnable task)

Specified by:

submit in interface java.util.concurrent.ExecutorService

invokeAll

public <T> java.util.List<java.util.concurrent.Future<T>> invokeAll(java.util.Collection<? extends java.util.concurrent.Callable<T>> tasks)
                                                             throws java.lang.InterruptedException

Specified by:

invokeAll in interface java.util.concurrent.ExecutorService

Throws:

java.lang.InterruptedException

invokeAll

public <T> java.util.List<java.util.concurrent.Future<T>> invokeAll(java.util.Collection<? extends java.util.concurrent.Callable<T>> tasks,
                                                                    long timeout,
                                                                    java.util.concurrent.TimeUnit unit)
                                                             throws java.lang.InterruptedException

Specified by:

invokeAll in interface java.util.concurrent.ExecutorService

Throws:

java.lang.InterruptedException

invokeAny

public <T> T invokeAny(java.util.Collection<? extends java.util.concurrent.Callable<T>> tasks)
                throws java.lang.InterruptedException,
                       java.util.concurrent.ExecutionException

Specified by:

invokeAny in interface java.util.concurrent.ExecutorService

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

invokeAny

public <T> T invokeAny(java.util.Collection<? extends java.util.concurrent.Callable<T>> tasks,
                       long timeout,
                       java.util.concurrent.TimeUnit unit)
                throws java.lang.InterruptedException,
                       java.util.concurrent.ExecutionException,
                       java.util.concurrent.TimeoutException

Specified by:

invokeAny in interface java.util.concurrent.ExecutorService

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

java.util.concurrent.TimeoutException

execute

public void execute(java.lang.Runnable command)

Specified by:

execute in interface java.util.concurrent.Executor