Stream: git-wasmtime

Topic: wasmtime / PR #3352 Add `Store::consume_fuel` to manually...

Wasmtime GitHub notifications bot (Sep 15 2021 at 15:03):

alexcrichton opened PR #3352 from consume-fuel to main:

This can be useful for host functions that want to consume fuel to
reflect their relative cost. Additionally it's a relatively easy
addition to have and someone's asking for it!

Closes #3315

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Wasmtime GitHub notifications bot (Sep 15 2021 at 16:13):

fitzgen submitted PR review.

Wasmtime GitHub notifications bot (Sep 15 2021 at 16:13):

fitzgen submitted PR review.

Wasmtime GitHub notifications bot (Sep 15 2021 at 16:13):

fitzgen created PR review comment:

Maybe saturating arithmetic is the right thing to do here instead of returning an error? Unsure.

I guess we could punt that saturate-or-not decision to the embedder since they can check fuel_consumed and compare it to the fuel added to clamp the amount of fuel to consume when calling this method. Might make sense to have a fuel_remaining method so they don't have to remember how much fuel was added and do that comparison themselves.

Wasmtime GitHub notifications bot (Sep 15 2021 at 18:09):

alexcrichton submitted PR review.

Wasmtime GitHub notifications bot (Sep 15 2021 at 18:09):

alexcrichton created PR review comment:

I figure this is something we'll probably tweak over time yeah. The precise interfaces here aren't exhasutively considered and bike-shedded, rather they're mostly just situation-solving feature requests as we get them. For now I figured you could get fuel_remaining with consume_fuel(0), but we can always add another path if necessary in the future too.

Wasmtime GitHub notifications bot (Sep 15 2021 at 18:10):

alexcrichton merged PR #3352.

Last updated: Dec 23 2024 at 12:05 UTC