Change timeout
/delay
functions to non-async
#910
Merged
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Hi,
Because of a compiler bug, the
async
implementations ofdelay
/delay_until
/timeout
/timeout_at
produce much larger RAM footprint than they should. This was documented in #890.This patch replaces those implementations with structs with
Future
implementations instead. On my current project, over three tasks, this saves 488(776->288) bytes over three tasks that used thedelay
andtimeout
functionality. As the target has only 8k of RAM, this was a significant saving.All tests pass, but if someone could take an extra look at the
Delay
implementation to verify that it is indeed safe, that would be great. I've not done much work with unsafe Rust so it's new territory for me.Best regards,
Lasse