Struct wasi_process::WasiProcess

#[must_use =
  "WasiProcess does nothing without being polled or spawned. Try calling `.spawn()`"]pub struct WasiProcess {
    pub stdin: Option<WasiStdin>,
    pub stdout: Option<WasiStdout>,
    pub stderr: Option<WasiStderr>,
    // some fields omitted
}

A wasi process. See crate documentation for more details and examples.

Fields

stdin: Option<WasiStdin>

An stdin reader for the wasi process

stdout: Option<WasiStdout>

An stdout writer for the wasi process

stderr: Option<WasiStderr>

An stderr writer for the wasi process

Implementations

impl WasiProcess

pub fn new(
    instance: &Instance,
    buf_size: MaxBufSize
) -> Result<Self, ExportError>

Create a WasiProcess from a wasm instance. See the crate documentation for more details. Returns an error if the instance doesn’t have a _start function exported.

pub fn with_function(start_function: Function, buf_size: MaxBufSize) -> Self

Create a WasiProcess from a wasm instance, given a _start function. See the crate documentation for more details.

pub fn spawn(self) -> SpawnHandle

Spawn the process on a tokio task. It’s okay to let this drop; that just means that you don’t care about exactly when or how the process finishes, and you’ll know you’re done when an stdio stream closes;

Trait Implementations

impl Future for WasiProcess

type Output = Result<(), RuntimeError>

The type of value produced on completion.

fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output>

Attempt to resolve the future to a final value, registering the current task for wakeup if the value is not yet available.