T0b1/wasmtime
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

feat(wasi): make WasiCtx overridable (#3895)

Browse Source 
In some use cases it is desirable to provide a custom snapshot WASI
context. Facilitate this by depending on a combination of traits
required rather than concrete type in the signature.

Signed-off-by: Roman Volosatovs <rvolosatovs@riseup.net>
This commit is contained in:
Roman Volosatovs
2022-03-07 22:17:59 +01:00
committed by GitHub
parent 7c3dd3398d
commit e81d4cea03
1 changed files with 8 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
crates/wasi/src/lib.rs
View File

@@ -42,11 +42,16 @@ macro_rules! define_wasi {
use wasmtime::Linker; use wasmtime::Linker;
pub fn add_to_linker<T>( pub fn add_to_linker<T, U>(
linker: &mut Linker<T>, linker: &mut Linker<T>,
get_cx: impl Fn(&mut T) -> &mut crate::WasiCtx + Send + Sync + Copy + 'static, get_cx: impl Fn(&mut T) -> &mut U + Send + Sync + Copy + 'static,
) -> anyhow::Result<()> ) -> anyhow::Result<()>
where $($bounds)* where U: Send
+ wasi_common::snapshots::preview_0::wasi_unstable::WasiUnstable
+ wasi_common::snapshots::preview_0::types::UserErrorConversion
+ wasi_common::snapshots::preview_1::wasi_snapshot_preview1::WasiSnapshotPreview1
+ wasi_common::snapshots::preview_1::types::UserErrorConversion,
$($bounds)*
{ {
snapshots::preview_1::add_wasi_snapshot_preview1_to_linker(linker, get_cx)?; snapshots::preview_1::add_wasi_snapshot_preview1_to_linker(linker, get_cx)?;
snapshots::preview_0::add_wasi_unstable_to_linker(linker, get_cx)?; snapshots::preview_0::add_wasi_unstable_to_linker(linker, get_cx)?;