Struct WasiCtx

pub struct WasiCtx { /* private fields */ }

A struct which provides access to internal WASI state.

Example

use wasmtime_wasi::{WasiCtx, ResourceTable, WasiView, IoView, WasiCtxBuilder};

struct MyState {
    ctx: WasiCtx,
    table: ResourceTable,
}

impl IoView for MyState {
    fn table(&mut self) -> &mut ResourceTable { &mut self.table }
}
impl WasiView for MyState {
    fn ctx(&mut self) -> &mut WasiCtx { &mut self.ctx }
}

impl MyState {
    fn new() -> MyState {
        let mut wasi = WasiCtxBuilder::new();
        wasi.arg("./foo.wasm");
        wasi.arg("--help");
        wasi.env("FOO", "bar");

        MyState {
            ctx: wasi.build(),
            table: ResourceTable::new(),
        }
    }
}

Per-Store state which holds state necessary to implement WASI from this crate.

This structure is created through WasiCtxBuilder and is stored within the T of Store<T>. Access to the structure is provided through the [WasiView] trait as an implementation on T.

Note that this structure itself does not have any accessors, it’s here for internal use within the wasmtime-wasi crate’s implementation of bindgen-generated traits.

Implementations

impl WasiCtx

pub fn builder() -> WasiCtxBuilder

Convenience function for calling WasiCtxBuilder::new.