diff options
Diffstat (limited to 'src/lib.rs')
| -rw-r--r-- | src/lib.rs | 65 |
1 files changed, 62 insertions, 3 deletions
@@ -31,11 +31,68 @@ allow(dead_code, unused_assignments, unused_variables) ) ))] -#![warn(missing_docs, missing_debug_implementations, rust_2018_idioms)] +#![warn( + missing_docs, + missing_debug_implementations, + rust_2018_idioms, + unreachable_pub +)] #![cfg_attr(not(feature = "std"), no_std)] #![cfg_attr(feature = "nightly", feature(cfg_target_has_atomic))] -// matches! requires Rust 1.42 -#![allow(clippy::match_like_matches_macro)] + +#[cfg(crossbeam_loom)] +#[allow(unused_imports)] +mod primitive { + pub(crate) mod sync { + pub(crate) mod atomic { + pub(crate) use loom::sync::atomic::spin_loop_hint; + pub(crate) use loom::sync::atomic::{ + AtomicBool, AtomicU16, AtomicU32, AtomicU64, AtomicU8, AtomicUsize, + }; + + // FIXME: loom does not support compiler_fence at the moment. + // https://github.com/tokio-rs/loom/issues/117 + // we use fence as a stand-in for compiler_fence for the time being. + // this may miss some races since fence is stronger than compiler_fence, + // but it's the best we can do for the time being. + pub(crate) use loom::sync::atomic::fence as compiler_fence; + } + pub(crate) use loom::sync::{Arc, Condvar, Mutex}; + } +} +#[cfg(not(crossbeam_loom))] +#[allow(unused_imports)] +mod primitive { + pub(crate) mod sync { + pub(crate) mod atomic { + pub(crate) use core::sync::atomic::compiler_fence; + // TODO(taiki-e): once we bump the minimum required Rust version to 1.49+, + // use [`core::hint::spin_loop`] instead. + #[allow(deprecated)] + pub(crate) use core::sync::atomic::spin_loop_hint; + pub(crate) use core::sync::atomic::{AtomicBool, AtomicIsize, AtomicUsize}; + #[cfg(has_atomic_u16)] + pub(crate) use core::sync::atomic::{AtomicI16, AtomicU16}; + #[cfg(has_atomic_u32)] + pub(crate) use core::sync::atomic::{AtomicI32, AtomicU32}; + #[cfg(has_atomic_u64)] + pub(crate) use core::sync::atomic::{AtomicI64, AtomicU64}; + #[cfg(has_atomic_u8)] + pub(crate) use core::sync::atomic::{AtomicI8, AtomicU8}; + } + + #[cfg(feature = "std")] + pub(crate) use std::sync::{Arc, Condvar, Mutex}; + } +} + +cfg_if! { + if #[cfg(feature = "alloc")] { + extern crate alloc; + } else if #[cfg(feature = "std")] { + extern crate std as alloc; + } +} #[cfg_attr(feature = "nightly", cfg(target_has_atomic = "ptr"))] pub mod atomic; @@ -51,6 +108,8 @@ use cfg_if::cfg_if; cfg_if! { if #[cfg(feature = "std")] { pub mod sync; + + #[cfg(not(crossbeam_loom))] pub mod thread; } } |