Method invoke

core/src/vm/mod.rs:84–100

Invokes the pending upcall.

(self)

impl<'a> UpcallHandler<'a> {
    /// Invokes the pending upcall.
    pub async fn invoke(self) -> Result<(), UpcallError> {
        let vm = self.vm;
        let image = self.image;
        let (index, first_reg, upcall_pc) = vm
            .pending_upcall
            .take()
            .expect("This is only reachable when the VM has a pending upcall");
        let (upcall, scope) = vm.prepare_upcall(image, index, first_reg, upcall_pc);
        let result = upcall.async_exec(scope).await;
        match vm.handle_upcall_result(image, upcall_pc, result) {
            Ok(()) => Ok(()),
            Err(e) => {
                vm.park_at_eof(image);
                Err(e)
            }
        }
    }
}

/// Representation of termination states from program execution.