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runtime (chan): support blocking without a scheduler #2444

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runtime (chan): support blocking without a scheduler #2444

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@niaow niaow commented Dec 29, 2021

This change modifies the implementation of channels such that they can still block without a scheduler.
An example that works with this change is examples/systick which sends to a channel from an interrupt.
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niaow commented Dec 29, 2021

It currently uses a fake task for compatibility, which is kinda messy. I am not entirely sure of a good way to do this which doesn't involve either making the existing implementation much more complex or maintaining an entire additional implementation of channels.
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niaow commented Dec 30, 2021

Hmm. Actually, I might have a better idea once coroutines are removed.
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