diff options
| -rw-r--r-- | Doc/library/asyncio-eventloop.rst | 7 | ||||
| -rw-r--r-- | Lib/asyncio/base_events.py | 5 | ||||
| -rw-r--r-- | Misc/NEWS | 4 |
3 files changed, 12 insertions, 4 deletions
diff --git a/Doc/library/asyncio-eventloop.rst b/Doc/library/asyncio-eventloop.rst index 202da5a..ba52d9b 100644 --- a/Doc/library/asyncio-eventloop.rst +++ b/Doc/library/asyncio-eventloop.rst @@ -670,6 +670,13 @@ pool of processes). By default, an event loop uses a thread pool executor This method is a :ref:`coroutine <coroutine>`. + .. versionchanged:: 3.5.3 + :meth:`BaseEventLoop.run_in_executor` no longer configures the + ``max_workers`` of the thread pool executor it creates, instead + leaving it up to the thread pool executor + (:class:`~concurrent.futures.ThreadPoolExecutor`) to set the + default. + .. method:: AbstractEventLoop.set_default_executor(executor) Set the default executor used by :meth:`run_in_executor`. diff --git a/Lib/asyncio/base_events.py b/Lib/asyncio/base_events.py index 648b9b9..b3e318e 100644 --- a/Lib/asyncio/base_events.py +++ b/Lib/asyncio/base_events.py @@ -41,9 +41,6 @@ from .log import logger __all__ = ['BaseEventLoop'] -# Argument for default thread pool executor creation. -_MAX_WORKERS = 5 - # Minimum number of _scheduled timer handles before cleanup of # cancelled handles is performed. _MIN_SCHEDULED_TIMER_HANDLES = 100 @@ -616,7 +613,7 @@ class BaseEventLoop(events.AbstractEventLoop): if executor is None: executor = self._default_executor if executor is None: - executor = concurrent.futures.ThreadPoolExecutor(_MAX_WORKERS) + executor = concurrent.futures.ThreadPoolExecutor() self._default_executor = executor return futures.wrap_future(executor.submit(func, *args), loop=self) @@ -402,6 +402,10 @@ Library children are done. Patch by Johannes Ebke. +- Issue #26796: Don't configure the number of workers for default + threadpool executor. + Initial patch by Hans Lawrenz. + IDLE ---- |