Package org.eclipse.jetty.util.thread

Interface ThreadPool

All Superinterfaces:

java.util.concurrent.Executor

All Known Subinterfaces:

ThreadPool.SizedThreadPool

All Known Implementing Classes:

ExecutorSizedThreadPool, ExecutorThreadPool, MonitoredQueuedThreadPool, QueuedThreadPool

@ManagedObject("Pool of Threads")
public interface ThreadPool
extends java.util.concurrent.Executor

A pool for threads.

A specialization of Executor interface that provides reporting methods (eg getThreads()) and the option of configuration methods (e.g. @link ThreadPool.SizedThreadPool.setMaxThreads(int)).

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	ThreadPool.SizedThreadPool	Specialized sub-interface of ThreadPool that allows to get/set the minimum and maximum number of threads of the pool.

Method Summary

Modifier and Type	Method	Description
int	getIdleThreads()
int	getThreads()
boolean	isLowOnThreads()
void	join()	Blocks until the thread pool is stopped.

Methods inherited from interface java.util.concurrent.Executor

execute

Method Detail

join

void join()
   throws java.lang.InterruptedException

Blocks until the thread pool is stopped.

Throws:

java.lang.InterruptedException - if thread was interrupted

getThreads

@ManagedAttribute("number of threads in pool")
int getThreads()

Returns:

The total number of threads currently in the pool

getIdleThreads

@ManagedAttribute("number of idle threads in pool")
int getIdleThreads()

Returns:

The number of idle threads in the pool

isLowOnThreads

@ManagedAttribute("indicates the pool is low on available threads")
boolean isLowOnThreads()

Returns:

True if the pool is low on threads