Trait Mail 

pub trait Mail: Send {
    // Required methods
    fn spawn(&mut self, thunk: Val) -> Result<Val, Val>;
    fn send(&mut self, addr: &Val, msg: Val) -> Result<Val, Val>;
    fn receive(&mut self) -> Option<Val>;
    fn monitor(&mut self, addr: &Val) -> Result<Val, Val>;
    fn limit(&mut self, addr: &Val, turns: i64) -> Result<Val, Val>;
}

The floor’s only route to the world. It knows nothing about tasks beyond an address being an s-expression; the scheduler supplies this.

Required Methods

fn spawn(&mut self, thunk: Val) -> Result<Val, Val>

fn send(&mut self, addr: &Val, msg: Val) -> Result<Val, Val>

fn receive(&mut self) -> Option<Val>

None means the mailbox is empty, which is the only reason anything in this machine ever blocks.

fn monitor(&mut self, addr: &Val) -> Result<Val, Val>

fn limit(&mut self, addr: &Val, turns: i64) -> Result<Val, Val>

Implementors

impl Mail for Post

impl Mail for NoMail