Refactor code to remove async move closure which may result in double… #1256
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audunhalland
reviewed
May 6, 2024
| } | ||
| let res = instance | ||
| .resolve_field_async(info, f.name.item, &args, &sub_exec) | ||
| .await; |
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It looks like this .await breaks concurrency. The await now happens directly within the for loop body, so the future will pause at this point before processing the next select. The intention of async_values is that the loop should produce all the futures synchronously up front, then after this loop there is another while loop at the bottom of the function which polls the FuturesOrdered so that all its contained futures may progress simultaneously.
audunhalland
reviewed
May 6, 2024
Comment on lines
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to
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| // TODO: implement custom future type instead of | ||
| // two-level boxing. |
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I don't see any boxing at all.. AsyncValueFuture is generic so this comment looks outdated.
LegNeato
requested changes
Jul 11, 2024
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Closes #820
I did not detect any apparent double boxing issues here however I refactored the code to use the custom
AsyncValueFutureenum and eliminate the unnecessaryasync moveclosure. This is my first contribution here - allcargo tests passed however thetest.bookfailed with some strange error about thedataloadercrate which seems unrelated.P.S. I am new to rust and snooping around for real-world practice so please advise me if I've made mistakes or missed something! Thank you in advance and hope to contribute more in the future!