Title: [3.7] bpo-33694: Fix race condition in asyncio proactor (GH-7498) by miss-islington · Pull Request #7499 · python/cpython · GitHub
Open Graph Title: [3.7] bpo-33694: Fix race condition in asyncio proactor (GH-7498) by miss-islington · Pull Request #7499 · python/cpython
X Title: [3.7] bpo-33694: Fix race condition in asyncio proactor (GH-7498) by miss-islington · Pull Request #7499 · python/cpython
Description: The cancellation of an overlapped WSARecv() has a race condition which causes data loss because of the current implementation of proactor in asyncio. No longer cancel overlapped WSARecv() in _ProactorReadPipeTransport to work around the race condition. Remove the optimized recv_into() implementation to get simple implementation of pause_reading() using the single _pending_data attribute. Move _feed_data_to_bufferred_proto() to protocols.py. Remove set_protocol() method which became useless. (cherry picked from commit 79790bc) Co-authored-by: Victor Stinner vstinner@redhat.com https://bugs.python.org/issue33694
Open Graph Description: The cancellation of an overlapped WSARecv() has a race condition which causes data loss because of the current implementation of proactor in asyncio. No longer cancel overlapped WSARecv() in _Proac...
X Description: The cancellation of an overlapped WSARecv() has a race condition which causes data loss because of the current implementation of proactor in asyncio. No longer cancel overlapped WSARecv() in _Proac...
Opengraph URL: https://github.com/python/cpython/pull/7499
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