Rust:actorモードとActivxライブラリ

pub trait Actor: Sized + 'static {

    type Context: ActorContext;

    fn started(&mut self, ctx: &mut Self::Context) {}

    fn stopping(&mut self, ctx: &mut Self::Context) -> Running {
        Running::Stop
    }
    fn start(self) -> Addr
    where
        Self: Actor>,
    {
        Context::new().run(self)
    }

    fn start_default() -> Addr
    where
        Self: Actor> + Default,
    {
        Self::default().start()
    }

    /// Start new actor in arbiter's thread.

    fn start_in_arbiter(arb: &Arbiter, f: F) -> Addr
    where
        Self: Actor>,
        F: FnOnce(&mut Context) -> Self + Send + 'static,
    {
        let (tx, rx) = channel::channel(DEFAULT_CAPACITY);
        // create actor
        arb.exec_fn(move || {
            let mut ctx = Context::with_receiver(rx);
            let act = f(&mut ctx);
            let fut = ctx.into_future(act);
            actix_rt::spawn(fut);
        });
        Addr::new(tx)
   }

    fn create(f: F) -> Addr
    where
        Self: Actor>,
        F: FnOnce(&mut Context) -> Self + 'static,
    {
        let mut ctx = Context::new();
        let act = f(&mut ctx);
        ctx.run(act)
    }
}

use actix::prelude::*;

struct MyActor {
    count: usize,
}

impl Actor for MyActor {
    type Context = Context;
    //  ， ， 
     fn started(&mut self, ctx: &mut Self::Context) {
        ctx.set_mailbox_capacity(1);
    }
}
let addr = MyActor.start();

pub trait Message {
    /// The type of value that this message will resolved with if it is
    /// successful.
    type Result: 'static;
}

pub trait Handler
where
    Self: Actor,
    M: Message,
{
    /// The type of value that this handler will return.
    type Result: MessageResponse;

    /// This method is called for every message received by this actor.
    fn handle(&mut self, msg: M, ctx: &mut Self::Context) -> Self::Result;
}

struct Ping(usize);
impl Handler for MyActor {
    type Result = usize;

    fn handle(&mut self, msg: Ping, ctx: &mut Context) -> Self::Result {
        self.count += msg.0;

        self.count
    }
}

use actix::prelude::*;

struct Ping(usize);

impl Message for Ping {
    type Result = usize;
}

pub struct Contextwhere
A: Actor>,
{
parts: ContextParts,
mb: Option>,
}
implContextwhere
A: Actor,
{
#[inline]
pub(crate) fn new() -> Self {
let mb = Mailbox::default();
Self {
parts: ContextParts::new(mb.sender_producer()),
mb: Some(mb),
}
}
#[inline]
pub fn with_receiver(rx: AddressReceiver) -> Self {
let mb = Mailbox::new(rx);
Self {
parts: ContextParts::new(mb.sender_producer()),
mb: Some(mb),
}
}
#[inline]
pub fn run(self, act: A) -> Addr{
let fut = self.into_future(act);
let addr = fut.address();
actix_rt::spawn(fut);
addr
}
pub fn into_future(mut self, act: A) -> ContextFut{
let mb = self.mb.take().unwrap();
ContextFut::new(self, act, mb)
}
pub fn handle(&self) -> SpawnHandle {
self.parts.curr_handle()
}
pub fn set_mailbox_capacity(&mut self, cap: usize) {
self.parts.set_mailbox_capacity(cap)
}
}
implAsyncContextPartsfor Contextwhere
A: Actor,
{
fn parts(&mut self) -> &mut ContextParts{
&mut self.parts
}
}
pub trait ContextFutureSpawnerwhere
A: Actor,
A::Context: AsyncContext,
{
fn spawn(self, ctx: &mut A::Context);
fn wait(self, ctx: &mut A::Context);
}
implContextFutureSpawnerfor T
where
A: Actor,
A::Context: AsyncContext,
T: ActorFuture + 'static,
{
#[inline]
fn spawn(self, ctx: &mut A::Context) {
let _ = ctx.spawn(self);
}
#[inline]
fn wait(self, ctx: &mut A::Context) {
ctx.wait(self);
}
}

pub struct ContextPartswhere
A: Actor,
A::Context: AsyncContext,
{
addr: AddressSenderProducer,
flags: ContextFlags,
wait: SmallVec; 2]>,
items: SmallVec; 3]>,
handles: SmallVec,
}

pub struct Mailboxwhere
A: Actor,
A::Context: AsyncContext,
{
msgs: AddressReceiver,
}
implMailboxwhere
A: Actor,
A::Context: AsyncContext,
{
#[inline]
pub fn new(msgs: AddressReceiver) -> Self {
Self { msgs }
}
pub fn capacity(&self) -> usize {
self.msgs.capacity()
}
pub fn set_capacity(&mut self, cap: usize) {
self.msgs.set_capacity(cap);
}
#[inline]
pub fn connected(&self) -> bool {
self.msgs.connected()
}
pub fn address(&self) -> Addr{
Addr::new(self.msgs.sender())
}
pub fn sender_producer(&self) -> AddressSenderProducer{
self.msgs.sender_producer()
}
pub fn poll(&mut self, act: &mut A, ctx: &mut A::Context) {
#[cfg(feature = "mailbox_assert")]
let mut n_polls = 0u16;
loop {
let mut not_ready = true;
// sync messages
loop {
if ctx.waiting() {
return;
}
match self.msgs.poll() {
Ok(Async::Ready(Some(mut msg))) => {
not_ready = false;
msg.handle(act, ctx);
}
Ok(Async::Ready(None)) | Ok(Async::NotReady) | Err(_) => break,
}
#[cfg(feature = "mailbox_assert")]
{
n_polls += 1;
assert!(n_polls < MAX_SYNC_POLLS, "Too many messages are being processed. Use Self::Context::notify() instead of direct use of address");
}
}
if not_ready {
return;
}
}
}
}

    pub trait Future {
        /// The type of value produced on completion.
        #[stable(feature = "futures_api", since = "1.36.0")]
        type Output;
        #[stable(feature = "futures_api", since = "1.36.0")]
        fn poll(self: Pin, cx: &mut Context) -> Poll<:output>;
    }