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asyncio: Fix _ProactorBasePipeTransport.close()

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Set the _read_fut attribute to None after cancelling it.

This change should fix a race condition with
_ProactorWritePipeTransport._pipe_closed().
This commit is contained in:
Victor Stinner 2015-01-15 13:40:27 +01:00
parent 79c93ba47b
commit fcd58de78f
1 changed files with 3 additions and 1 deletions
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4
Lib/asyncio/proactor_events.py
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@ -72,6 +72,7 @@ class _ProactorBasePipeTransport(transports._FlowControlMixin,
self._loop.call_soon(self._call_connection_lost, None)
if self._read_fut is not None:
self._read_fut.cancel()
self._read_fut = None
def _fatal_error(self, exc, message='Fatal error on pipe transport'):
if isinstance(exc, (BrokenPipeError, ConnectionResetError)):
@ -93,9 +94,10 @@ class _ProactorBasePipeTransport(transports._FlowControlMixin,
self._conn_lost += 1
if self._write_fut:
self._write_fut.cancel()
self._write_fut = None
if self._read_fut:
self._read_fut.cancel()
self._write_fut = self._read_fut = None
self._read_fut = None
self._pending_write = 0
self._buffer = None
self._loop.call_soon(self._call_connection_lost, exc)