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//! Asynchronous channels.
//!
//! This module provides various channels that can be used to communicate between
//! asynchronous tasks.

mod error;
pub use self::error::{ChannelSendError};

mod channel_future;
use channel_future::{
    RecvPollState, RecvWaitQueueEntry,
    SendPollState, SendWaitQueueEntry,
    ChannelSendAccess, ChannelReceiveAccess,};
pub use channel_future::{
    ChannelReceiveFuture, ChannelSendFuture};

mod oneshot;

pub use self::oneshot::{
    GenericOneshotChannel,
    LocalOneshotChannel,
};

#[cfg(feature = "std")]
pub use self::oneshot::{
    OneshotChannel,
};

mod oneshot_broadcast;

pub use self::oneshot_broadcast::{
    GenericOneshotBroadcastChannel,
    LocalOneshotBroadcastChannel,
};

#[cfg(feature = "std")]
pub use self::oneshot_broadcast::{
    OneshotBroadcastChannel,
};

mod state_broadcast;
pub use state_broadcast::{
    StateId,
    GenericStateBroadcastChannel,
    LocalStateBroadcastChannel,
    StateReceiveFuture,
};

#[cfg(feature = "std")]
pub use self::state_broadcast::StateBroadcastChannel;

mod mpmc;

pub use self::mpmc::{
    GenericChannel,
    LocalChannel,
    LocalUnbufferedChannel,
};

#[cfg(feature = "std")]
pub use self::mpmc::{
    Channel,
    UnbufferedChannel,
};

// The next section should really integrated if the alloc feature is active,
// since it mainly requires `Arc` to be available. However for simplicity reasons
// it is currently only activated in std environments.
#[cfg(feature = "std")]
mod if_alloc {

    /// Channel implementations where Sender and Receiver sides are cloneable
    /// and owned.
    /// The Futures produced by channels in this module don't require a lifetime
    /// parameter.
    pub mod shared {
        pub use super::super::channel_future::shared::*;
        pub use super::super::mpmc::shared::*;
        pub use super::super::oneshot::shared::*;
        pub use super::super::oneshot_broadcast::shared::*;
        pub use super::super::state_broadcast::shared::*;
    }
}

#[cfg(feature = "std")]
pub use self::if_alloc::*;