[3.7] bpo-35125: remove inner callback on outer cancellation in asyncio shield (GH-10340)#13167
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miss-islington merged 1 commit intopython:3.7from May 7, 2019
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…eld (pythonGH-10340) When the future returned by shield is cancelled, its completion callback of the inner future is not removed. This makes the callback list of inner inner future grow each time a shield is created and cancelled. This change unregisters the callback from the inner future when the outer future is cancelled. https://bugs.python.org/issue35125 (cherry picked from commit b35acc5) Co-authored-by: Romain Picard <romain.picard@oakbits.com>
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When the future returned by shield is cancelled, its completion callback of the
inner future is not removed. This makes the callback list of inner inner future
grow each time a shield is created and cancelled.
This change unregisters the callback from the inner future when the outer
future is cancelled.
https://bugs.python.org/issue35125
(cherry picked from commit b35acc5)
Co-authored-by: Romain Picard romain.picard@oakbits.com
https://bugs.python.org/issue35125