traits_futures.multiprocessing_context module

Context providing multiprocessing-friendly worker pools, events, and routers.

class traits_futures.multiprocessing_context.MultiprocessingContext

Bases: traits_futures.i_parallel_context.IParallelContext

Context for multiprocessing, suitable for use with the TraitsExecutor.

close()

Do any cleanup necessary before disposal of the context.

property closed

True if this context is closed, else False.

event()

Return a shareable event suitable for this context.

Returns

event – An event that can be shared safely with workers. The event should have the same API as threading.Event and multiprocessing.Event, providing at a minimum the set and is_set methods from that API.

Return type

object

message_router(event_loop)

Return a message router suitable for use in this context.

Parameters

event_loop (IEventLoop) – The event loop to interact with.

Returns

message_router

Return type

MultiprocessingRouter

worker_pool(*, max_workers=None)

Provide a new worker pool suitable for this context.

Parameters

max_workers (int, optional) – Maximum number of workers to use. If not given, the choice is delegated to the ProcessPoolExecutor.

Returns

executor

Return type

concurrent.futures.Executor