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fix(neon): Do not panic when dropping a Root if the VM has shutdown #677

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merged 2 commits into from Feb 2, 2021
Merged

fix(neon): Do not panic when dropping a Root if the VM has shutdown #677

merged 2 commits into from Feb 2, 2021

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kjvalencik
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@kjvalencik kjvalencik commented Jan 29, 2021 •
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Currently, if a Root is inside an EventQueue task and the VM is stopped, the user will never have an opportunity to clean up the Root. In this case, it's not a leak because the value will be deleted as the VM exits.

This PR introduces a new IS_RUNNING thread local value. It is initialized as true during module initialization and set to false the first time an EventQueue callback receives a None for Env.

If the value is false, the Drop impl on Root will not panic.

dherman
dherman approved these changes Feb 2, 2021
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:shipit:

@kjvalencik kjvalencik merged commit 0a35c58 into main Feb 2, 2021
@kjvalencik kjvalencik deleted the kv/no-panic-shutdown branch February 2, 2021 15:45
This was referenced Jun 6, 2021
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