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use crate::executors::thread_pinned_executor::{ThreadPinnedExecutor, DistributionStrategy, TaskOptions};
use crate::executors::executor::{Executor,ExecutorTask};
use crate::actors::dispatcher::Dispatcher;
use crate::actors::actor_cell::ActorCell;
use crate::actors::local_actor_ref::LocalActorRef;
use crate::actors::abstract_actor_ref::AbstractActorRef;
use crate::actors::actor_context::ActorContext;
use crate::actors::envelope::Envelope;
use crate::actors::mailbox::Mailbox;
use crate::actors::actor::{Actor, PoisonPill};
use crate::actors::message::Message;
use crate::common::tsafe::TSafe;
use std::any::Any;
pub struct DefaultDispatcher {
executor: ThreadPinnedExecutor,
rounds: usize
}
impl DefaultDispatcher {
pub fn new(_t_count: u32) -> DefaultDispatcher {
let executor = ThreadPinnedExecutor::new()
.set_distribution_strategy(DistributionStrategy::Load)
.run();
DefaultDispatcher {
executor,
rounds: 0
}
}
pub fn invoke(mailbox: &TSafe<Mailbox + Send>, actor: &TSafe<Actor + Send>, cell: &TSafe<ActorCell>) {
let envelope = {
let mut mailbox = mailbox.lock().unwrap();
if mailbox.has_messages() {
Some(mailbox.dequeue())
} else {
None
}
};
if envelope.is_some() {
let envelope = envelope.unwrap();
let sender: Box<AbstractActorRef + Send> = {
if envelope.sender.is_some() {
envelope.sender.unwrap()
} else {
let mut system = envelope.system.lock().unwrap();
let dead_letters = system.dead_letters();
dead_letters
}
};
let msg = envelope.message;
let handled = {
let mut actor = actor.lock().unwrap();
let ctx = ActorContext::new(
sender.clone(),
envelope.receiver.clone(),
envelope.system.clone());
actor.receive(msg.clone(), ctx)
};
if !handled {
let handled2 = DefaultDispatcher::internal_receive(mailbox, msg.clone(), cell);
if !handled2 {
let mut dead_letters = {
let mut system = envelope.system.lock().unwrap();
let dead_letters = system.dead_letters();
dead_letters
};
dead_letters.cell().lock().unwrap().send(&dead_letters.cell(), msg, Some(sender), envelope.receiver );
}
}
}
mailbox.lock().unwrap().set_planned(false);
}
pub fn internal_receive(mailbox: &TSafe<Mailbox + Send>, msg: Message, cell: &TSafe<ActorCell>) -> bool {
if let Some(PoisonPill {}) = msg.get().downcast_ref::<PoisonPill>() {
let mut cell_u = cell.lock().unwrap();
cell_u.suspend();
let dead_letters = cell_u.system.lock().unwrap().dead_letters();
mailbox.lock().unwrap().clean_up(Box::new(LocalActorRef::new(cell.clone(), cell_u.path.clone())), dead_letters);
cell_u.stop(cell.clone());
} else {
return false
}
true
}
}
impl Executor for DefaultDispatcher {
fn execute(&mut self, f: ExecutorTask, options: Option<Box<Any>>) {
self.executor.execute(f, options)
}
}
impl Dispatcher for DefaultDispatcher {
fn dispatch(self: &mut Self, cell: TSafe<ActorCell>, bid: usize, mailbox: TSafe<Mailbox + Send>, actor: TSafe<Actor + Send>, envelope: Envelope) {
let mut mailbox_u = mailbox.lock().unwrap();
mailbox_u.enqueue(envelope);
let mailbox = mailbox.clone();
let f = Box::new(move || {
DefaultDispatcher::invoke(&mailbox, &actor, &cell)
});
self.execute(f, Some( Box::new(TaskOptions { thread_id: Some(bid) } )))
}
fn obtain_bid(self: &mut Self) -> usize {
if self.rounds == 4 - 1 {
self.rounds = 0;
} else {
self.rounds = self.rounds + 1;
}
self.rounds
}
}