crossfire 2.1.11

channels for async and threads
Documentation 
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use super::{Flavor, FlavorImpl, FlavorPrivate};
use crate::waker_registry::*;
use crossbeam_queue::SegQueue;
use std::mem::MaybeUninit;

pub struct List<T>(SegQueue<T>);

impl<T> List<T> {
    #[inline(always)]
    pub fn new() -> Self {
        Self(SegQueue::<T>::new())
    }
}

impl<T> FlavorImpl<T> for List<T> {
    #[inline(always)]
    fn len(&self) -> usize {
        self.0.len()
    }

    #[inline(always)]
    fn capacity(&self) -> Option<usize> {
        None
    }

    #[inline(always)]
    fn is_full(&self) -> bool {
        false
    }

    #[inline(always)]
    fn is_empty(&self) -> bool {
        self.0.is_empty()
    }

    #[inline(always)]
    fn try_send(&self, item: &MaybeUninit<T>) -> bool {
        self.0.push(unsafe { item.assume_init_read() });
        true
    }

    #[inline(always)]
    fn try_recv(&self) -> Option<T> {
        self.0.pop()
    }

    #[inline]
    fn backoff_limit(&self) -> u16 {
        crate::backoff::DEFAULT_LIMIT
    }

    #[inline]
    fn may_direct_copy(&self) -> bool {
        false
    }
}

impl<T> FlavorPrivate<T> for List<T> {
    #[inline]
    fn to_flavor(self) -> Flavor<T> {
        Flavor::List(self)
    }

    #[inline]
    fn new_reg_sender<const MP: bool>(&self) -> RegistrySender<T> {
        RegistrySender::<T>::Dummy
    }

    #[inline]
    fn new_reg_recv<const MC: bool>(&self) -> RegistryRecv {
        if MC {
            RegistryRecv::new_multi()
        } else {
            RegistryRecv::new_single()
        }
    }
}