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Title: [WIP] bpo-38323: Fix MultiLoopChildWatcher hangs by cjerdonek · Pull Request #20142 · python/cpython · GitHub

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[WIP] bpo-38323: Fix MultiLoopChildWatcher hangs https://github.com/python/cpython/pull/20142/files#top
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5d10132 bpo-38323: Fix rare MultiLoopChildWatcher hangs. cjerdonek May 16, 2020 https://github.com/python/cpython/pull/20142/commits/5d1013256c133b61587b6a80a0f9d509ac11d123
9618884 Add docstring. cjerdonek May 17, 2020 https://github.com/python/cpython/pull/20142/commits/9618884446dc4a72e401b0f05b2992e34e39d700
4d4c147 Address a couple review comments. cjerdonek Oct 16, 2020 https://github.com/python/cpython/pull/20142/commits/4d4c147b9bfe4ce7bb51aa4745ead8a422e98c14
14f6cfc Revert tearDown() change. cjerdonek Oct 16, 2020 https://github.com/python/cpython/pull/20142/commits/14f6cfc20e77a349a22ced05352afd3ee200b403
22ba0b1 Tweak documentation change. cjerdonek Oct 17, 2020 https://github.com/python/cpython/pull/20142/commits/22ba0b1fd560aeaa61b3a21b4065aa91a807e0f1
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