3 people 4fc4067796 [3.13] gh-125451: Fix deadlock in ProcessPoolExecutor shutdown (GH-125492) (GH-125598) ...

There was a deadlock when `ProcessPoolExecutor` shuts down at the same
time that a queueing thread handles an error processing a task.

Don't use `_shutdown_lock` to protect the `_ThreadWakeup` pipes -- use
an internal lock instead. This fixes the ordering deadlock where the
`ExecutorManagerThread` holds the `_shutdown_lock` and joins the
queueing thread, while the queueing thread is attempting to acquire the
`_shutdown_lock` while closing the `_ThreadWakeup`.
(cherry picked from commit 760872efec)

Co-authored-by: Sam Gross <[email protected]>

2024-10-16 14:03:17 -04:00

..

futures

[3.13] gh-125451: Fix deadlock in ProcessPoolExecutor shutdown (GH-125492) (GH-125598)

2024-10-16 14:03:17 -04:00

__init__.py

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