Fix potential deadlock if open_loop() is cancelled #128
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…+await asyncio tasks on exit
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Nice fix. LGTM |
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Resolves #115. This also modifies the "cancel and await all asyncio tasks" logic to run even if
open_loop()is cancelled or sees an exception, because that's another potential source of deadlocks -- the Trio tasks in thetasks_nurserymight need to block on asyncio work as they unwind.