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Title: [3.11] gh-107219: Fix concurrent.futures terminate_broken() (GH-109244) by miss-islington · Pull Request #109255 · python/cpython · GitHub

Open Graph Title: [3.11] gh-107219: Fix concurrent.futures terminate_broken() (GH-109244) by miss-islington · Pull Request #109255 · python/cpython

X Title: [3.11] gh-107219: Fix concurrent.futures terminate_broken() (GH-109244) by miss-islington · Pull Request #109255 · python/cpython

Description: Fix a race condition in concurrent.futures. When a process in the process pool was terminated abruptly (while the future was running or pending), close the connection write end. If the call queue is blocked on sending bytes to a worker process, closing the connection write end interrupts the send, so the queue can be closed. Changes: _ExecutorManagerThread.terminate_broken() now closes call_queue._writer. multiprocessing PipeConnection.close() now interrupts WaitForMultipleObjects() in _send_bytes() by cancelling the overlapped operation. (cherry picked from commit a9b1f84) Co-authored-by: Victor Stinner vstinner@python.org Issue: gh-107219

Open Graph Description: Fix a race condition in concurrent.futures. When a process in the process pool was terminated abruptly (while the future was running or pending), close the connection write end. If the call queue i...

X Description: Fix a race condition in concurrent.futures. When a process in the process pool was terminated abruptly (while the future was running or pending), close the connection write end. If the call queue i...

Opengraph URL: https://github.com/python/cpython/pull/109255

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