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//! Futures-powered synchronization primitives.
//!
//! This module is only available when the `std` or `alloc` feature of this
//! library is activated, and it is activated by default.

#[cfg(feature = "std")]
mod mutex;
#[cfg(feature = "std")]
pub use self::mutex::{Mutex, MutexLockFuture, MutexGuard};

#[cfg(any(feature = "bilock", feature = "sink", feature = "io"))]
#[cfg_attr(not(feature = "bilock"), allow(unreachable_pub))]
mod bilock;
#[cfg(feature = "bilock")]
pub use self::bilock::{BiLock, BiLockAcquire, BiLockGuard, ReuniteError};
#[cfg(any(feature = "sink", feature = "io"))]
#[cfg(not(feature = "bilock"))]
pub(crate) use self::bilock::BiLock;