[issue28464] BaseEventLoop.close should shutdown executor before marking itself closed

[Chris Meyer]

New submission from Chris Meyer:

BaseEventLoop.close shuts down the executor associated with the event loop.

It should do that BEFORE it sets self._closed = True, otherwise any pending executor futures will attempt to 'call_soon' on the event loop when they finish, resulting in a confusing error message that the event loop is already closed.

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components: asyncio
messages: 278829
nosy: cmeyer, gvanrossum, yselivanov
priority: normal
severity: normal
status: open
title: BaseEventLoop.close should shutdown executor before marking itself closed
type: behavior
versions: Python 3.5

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue28464>
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