Stream: git-wasmtime

Topic: wasmtime / PR #5428 wiggle: choose between `&mut self` an...

Wasmtime GitHub notifications bot (Dec 13 2022 at 20:01):

abrown opened PR #5428 from wiggle-mutability to main:

Previously, all Wiggle-generated traits were generated with &mut self signatures. With the addition of the mutable configuration option to from_witx! and wasmtime_integration!, one can disable this, emitting instead traits that use &self (i.e., mutable: false). This change is helpful for implementing wasi-threads: WASI implementations with interior mutability will now be able to communitcate this to their Wiggle-generated code.

The other side of this change is the get_cx closure passed to Wiggle's generated add_to_linker function. When mutability is set to true (default), the get_cx function takes a &mut data structure from the store and returns a corresponding &mut reference, usually to a field of the passed-in structure. When mutability: false, the get_cx closure will still take a &mut data structure but now will return a & reference.

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Wasmtime GitHub notifications bot (Dec 13 2022 at 20:01):

abrown has marked PR #5428 as ready for review.

Wasmtime GitHub notifications bot (Dec 13 2022 at 20:01):

abrown requested alexcrichton for a review on PR #5428.

Wasmtime GitHub notifications bot (Dec 13 2022 at 20:04):

alexcrichton submitted PR review.

Wasmtime GitHub notifications bot (Dec 13 2022 at 21:02):

abrown updated PR #5428 from wiggle-mutability to main.

Wasmtime GitHub notifications bot (Dec 13 2022 at 22:38):

abrown merged PR #5428.

Last updated: Dec 06 2025 at 06:05 UTC