//! Sync primitives for budget concurrency.
//!
//! When the build script enables `cfg(loom)` through `CALYBRIS_LOOM`, mutexes
//! and atomics use `loom::sync` for model checking. `Arc` stays
//! `std::sync::Arc` (loom's `Arc` does not support `HashMap` keys).
pub use ;
pub use Mutex;
pub use ;
pub use Mutex;
pub use Arc;