Struct RuntimeOutput 

struct RuntimeOutput {
    stderr: Arc<Mutex<Tail<STDERR_TAIL_SIZE>>>,
    task: JoinHandle<()>,
}

The stdout and stderr of a runtime with pipes of its own, read in the background until they end. Only the end of stderr is kept, it holds the error, stdout is not of interest.

Fields

stderr: Arc<Mutex<Tail<STDERR_TAIL_SIZE>>>

task: JoinHandle<()>

Implementations

impl RuntimeOutput

fn spawn(stdout: Option<ChildStdout>, stderr: Option<ChildStderr>) -> Self

Start reading the pipes of a runtime in the background.

async fn read( reader: impl AsyncRead + Unpin, buf: Option<&Mutex<Tail<STDERR_TAIL_SIZE>>>, )

Read until the end, keeping the end in buf if any. The reads go to the scratch buffer of the thread, see with_scratch, so that the task of a create or exec with a terminal carries no buffers of its own.

async fn finish_unless_stopped( output: Option<Self>, stop: &CancellationToken, ) -> Vec<u8>

Wait for the end of the output for a while, a helper of the runtime may hold the pipes open, but only briefly once the shutdown stopped the call through stop, and return the end of stderr.

fn end(output: &Self) -> Vec<u8>