org.onlab.util

Class BoundedThreadPool

java.lang.Object

java.util.concurrent.AbstractExecutorService

java.util.concurrent.ThreadPoolExecutor

org.onlab.util.BoundedThreadPool

All Implemented Interfaces:

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

public final class BoundedThreadPool
extends java.util.concurrent.ThreadPoolExecutor

Implementation of ThreadPoolExecutor that bounds the work queue.

When a new job would exceed the queue bound, the job is run on the caller's thread rather than on a thread from the pool.

Nested Class Summary

Nested classes/interfaces inherited from class java.util.concurrent.ThreadPoolExecutor

java.util.concurrent.ThreadPoolExecutor.AbortPolicy, java.util.concurrent.ThreadPoolExecutor.CallerRunsPolicy, java.util.concurrent.ThreadPoolExecutor.DiscardOldestPolicy, java.util.concurrent.ThreadPoolExecutor.DiscardPolicy

Field Summary

Fields

Modifier and Type	Field and Description
protected static int	maxQueueSize

Method Summary

Modifier and Type	Method and Description
protected void	afterExecute(java.lang.Runnable r, java.lang.Throwable t)
protected void	beforeExecute(java.lang.Thread t, java.lang.Runnable r)
void	execute(java.lang.Runnable command)
static BoundedThreadPool	newFixedThreadPool(int numberOfThreads, java.util.concurrent.ThreadFactory threadFactory) Returns a fixed-size, bounded executor service.
static BoundedThreadPool	newSingleThreadExecutor(java.util.concurrent.ThreadFactory threadFactory) Returns a single-thread, bounded executor service.
<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)

Methods inherited from class java.util.concurrent.ThreadPoolExecutor

allowCoreThreadTimeOut, allowsCoreThreadTimeOut, awaitTermination, finalize, getActiveCount, getCompletedTaskCount, getCorePoolSize, getKeepAliveTime, getLargestPoolSize, getMaximumPoolSize, getPoolSize, getQueue, getRejectedExecutionHandler, getTaskCount, getThreadFactory, isShutdown, isTerminated, isTerminating, prestartAllCoreThreads, prestartCoreThread, purge, remove, setCorePoolSize, setKeepAliveTime, setMaximumPoolSize, setRejectedExecutionHandler, setThreadFactory, shutdown, shutdownNow, terminated, toString

Methods inherited from class java.util.concurrent.AbstractExecutorService

invokeAll, invokeAll, invokeAny, invokeAny, newTaskFor, newTaskFor

Methods inherited from class java.lang.Object

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

Field Detail

maxQueueSize

protected static int maxQueueSize

Method Detail

newSingleThreadExecutor

public static BoundedThreadPool newSingleThreadExecutor(java.util.concurrent.ThreadFactory threadFactory)

Returns a single-thread, bounded executor service.

Parameters:

threadFactory - thread factory for the worker thread.

Returns:

the bounded thread pool

newFixedThreadPool

public static BoundedThreadPool newFixedThreadPool(int numberOfThreads,
                                                   java.util.concurrent.ThreadFactory threadFactory)

Returns a fixed-size, bounded executor service.

Parameters:

numberOfThreads - number of threads in the pool

threadFactory - thread factory for the worker threads.

Returns:

the bounded thread pool

submit

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

Specified by:

submit in interface java.util.concurrent.ExecutorService

Overrides:

submit in class java.util.concurrent.AbstractExecutorService

submit

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

Specified by:

submit in interface java.util.concurrent.ExecutorService

Overrides:

submit in class java.util.concurrent.AbstractExecutorService

execute

public void execute(java.lang.Runnable command)

Specified by:

execute in interface java.util.concurrent.Executor

Overrides:

execute in class java.util.concurrent.ThreadPoolExecutor

submit

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

Specified by:

submit in interface java.util.concurrent.ExecutorService

Overrides:

submit in class java.util.concurrent.AbstractExecutorService

beforeExecute

protected void beforeExecute(java.lang.Thread t,
                             java.lang.Runnable r)

Overrides:

beforeExecute in class java.util.concurrent.ThreadPoolExecutor

afterExecute

protected void afterExecute(java.lang.Runnable r,
                            java.lang.Throwable t)

Overrides:

afterExecute in class java.util.concurrent.ThreadPoolExecutor