java9.util.concurrent

Interface ForkJoinPool.ForkJoinWorkerThreadFactory

Enclosing class:

ForkJoinPool

public static interface ForkJoinPool.ForkJoinWorkerThreadFactory

Factory for creating new ForkJoinWorkerThreads. A ForkJoinWorkerThreadFactory must be defined and used for ForkJoinWorkerThread subclasses that extend base functionality or initialize threads with different contexts.

Method Summary

Modifier and Type	Method and Description
ForkJoinWorkerThread	newThread(ForkJoinPool pool) Returns a new worker thread operating in the given pool.

Method Detail

newThread

ForkJoinWorkerThread newThread(ForkJoinPool pool)

Returns a new worker thread operating in the given pool. Returning null or throwing an exception may result in tasks never being executed. If this method throws an exception, it is relayed to the caller of the method (for example execute) causing attempted thread creation. If this method returns null or throws an exception, it is not retried until the next attempted creation (for example another call to execute).

Parameters:

pool - the pool this thread works in

Returns:

the new worker thread, or null if the request to create a thread is rejected

Throws:

NullPointerException - if the pool is null