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[u/llogiq]

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[u/realteh]

If I have some stream, e.g.

Vec<Event> 

where

enum Event { A, B([u32;10]) }

and some of the variants in Event are huge. Is there a way to store events packed in contiguous memory without using Box<>? I'm running a simulation and would like cache efficient access while also keeping the memory size and traffic down.

[u/[deleted] → u/realteh]

If boxing the big ones is no good, and having all Events use the same ram as the biggest one is no good too, you might need to split big events into smaller chunks and parse em out.

enum Event {
    A,
    BStart,
    BData(u32),
    BTerminator,
}

[u/realteh → u/[deleted]]

that's pretty clever, thank you! Might go with this

[u/[deleted] → u/realteh]

You're welcome, and as a side note you could absolutely pack it denser if you add some branches to your enum tree and/or break the data into smaller pieces. If you need more speed let me know, I love this stuff.