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[3.11] GH-89237: fix hang in proactor subprocess.wait_closed() (GH-98572) (#98620)

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GH-89237: fix hang in proactor `subprocess.wait_closed()` (GH-98572)
(cherry picked from commit ad1dc3ebb6)

Co-authored-by: Kumar Aditya <59607654+kumaraditya303@users.noreply.github.com>
This commit is contained in:
Miss Islington (bot) 2022-10-24 20:34:08 -07:00 • committed by GitHub
parent 5fb3b61114
commit 8950689dce
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3 changed files with 10 additions and 2 deletions
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4
Lib/asyncio/proactor_events.py
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@ -60,6 +60,7 @@ class _ProactorBasePipeTransport(transports._FlowControlMixin,
self._pending_write = 0
self._conn_lost = 0
self._closing = False # Set when close() called.
self._called_connection_lost = False
self._eof_written = False
if self._server is not None:
self._server._attach()
@ -136,7 +137,7 @@ class _ProactorBasePipeTransport(transports._FlowControlMixin,
self._empty_waiter.set_result(None)
else:
self._empty_waiter.set_exception(exc)
if self._closing:
if self._closing and self._called_connection_lost:
return
self._closing = True
self._conn_lost += 1
@ -166,6 +167,7 @@ class _ProactorBasePipeTransport(transports._FlowControlMixin,
if server is not None:
server._detach()
self._server = None
self._called_connection_lost = True
def get_write_buffer_size(self):
size = self._pending_write