1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87
//! Actress - a simple actor library for Rust use std::thread; use std::thread::JoinHandle; use std::sync::mpsc::channel; use std::sync::mpsc::{Sender}; /// Trait required to be compatible as an actor /// /// # Examples /// /// ``` /// use actress; /// /// struct NullActor; /// /// impl actress::Actor for NullActor { /// type MessageType = i32; /// /// fn recv(&mut self, msg: i32) -> bool { msg == 42 } /// } /// ``` pub trait Actor { /// The type of message the actor can receive. type MessageType : Send + 'static; /// A handler to receive messages from the channel. Returning 'true' will signal that this actor has /// completed. fn recv(&mut self, msg: Self::MessageType) -> bool; } /// Spawns an actor with the given struct instance. Returns a tuple of a channel ```Sender``` to communicate /// with the newly-spawned actor as well as a ```JoinHandle``` to later join the actor. /// /// # Examples /// /// ``` /// struct NullActor; /// /// impl actress::Actor for NullActor { /// type MessageType = i32; /// /// fn recv(&mut self, msg: i32) -> bool { msg == 42 } /// } /// /// fn main() { /// let null_actor = NullActor; /// let (actor, handle) = actress::spawn_with_handle(null_actor); /// } /// ``` pub fn spawn_with_handle<T: Actor + Send + 'static>(mut contained: T) -> (Sender<T::MessageType>, JoinHandle<()>) { let (tx, rx) = channel(); let handle = thread::spawn(move || { loop { match rx.recv() { Ok(result) => if contained.recv(result) == true { break }, Err(_) => break } } }); (tx, handle) } /// Spawns an actor with the given struct instance. Returns a channel ```Sender``` to communicate /// with the newly-spawned actor. /// /// # Examples /// /// ``` /// struct NullActor; /// /// impl actress::Actor for NullActor { /// type MessageType = i32; /// /// fn recv(&mut self, msg: i32) -> bool { msg == 42 } /// } /// /// fn main() { /// let null_actor = NullActor; /// let actor = actress::spawn(null_actor); /// } /// ``` pub fn spawn<T: Actor + Send + 'static>(contained: T) -> Sender<T::MessageType> { let (tx, _) = spawn_with_handle(contained); tx }