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bpo-34679: Restore instantiation Windows IOCP event loop from non-main thread (GH-15492)

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* Restore running proactor event loop from non-main thread

Co-Authored-By: Kyle Stanley <aeros167@gmail.com>
(cherry picked from commit 1c06009986)

Co-authored-by: Andrew Svetlov <andrew.svetlov@gmail.com>
This commit is contained in:
Miss Islington (bot) 2019-08-26 03:14:54 -07:00 • committed by GitHub
parent 522a394a72
commit 69d22b8fee
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3 changed files with 24 additions and 1 deletions
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5
Lib/asyncio/proactor_events.py
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@ -11,6 +11,7 @@ import os
import socket
import warnings
import signal
import threading
import collections
from . import base_events
@ -627,7 +628,9 @@ class BaseProactorEventLoop(base_events.BaseEventLoop):
proactor.set_loop(self)
self._make_self_pipe()
self_no = self._csock.fileno()
signal.set_wakeup_fd(self_no)
if threading.current_thread() is threading.main_thread():
# wakeup fd can only be installed to a file descriptor from the main thread
signal.set_wakeup_fd(self_no)
def _make_socket_transport(self, sock, protocol, waiter=None,
extra=None, server=None):