bpo-38630: subprocess: enhance send_signal() on Unix by vstinner · Pull Request #16984 · python/cpython
On Unix, subprocess.Popen.send_signal() now polls the process status. Polling reduces the risk of sending a signal to the wrong process if the process completed, the Popen.returncode attribute is still None, and the pid has been reassigned (recycled) to a new different process.
vstinner
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subprocess_send_signal
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shihai1991 pushed a commit to shihai1991/cpython that referenced this pull request
Jan 31, 2020
…H-16984) On Unix, subprocess.Popen.send_signal() now polls the process status. Polling reduces the risk of sending a signal to the wrong process if the process completed, the Popen.returncode attribute is still None, and the pid has been reassigned (recycled) to a new different process.
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