Method shutdown

cranelift/filetests/src/concurrent.rs:76–78

Shut down worker threads orderly. They will finish any queued jobs first.

(&mut self)

    /// Shut down worker threads orderly. They will finish any queued jobs first.
    pub fn shutdown(&mut self) {
        self.request_tx = None;
    }

    /// Join all the worker threads.
    /// Transfer pass timings from the worker threads to the current thread.