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Clarify the default option to use

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Geoff Yoerger 2017-01-19 21:43:34 -06:00 committed by GitHub
parent 02ead27c93
commit dfa9736e9f
1 changed files with 6 additions and 1 deletions
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7
src/libcore/sync/atomic.rs
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@ -140,10 +140,15 @@ unsafe impl<T> Sync for AtomicPtr<T> {}
/// to be moved either before or after the atomic operation; on the other end
/// "relaxed" atomics allow all reorderings.
///
/// If you are confused or don't have enough time to research which ordering to use, use `SeqCst`.
/// Of all the options it has the most unsurpising effect (see the nomicon for details. [1])
/// The downside is you miss out on several optimizations the other orderings offer.
///
/// Rust's memory orderings are [the same as
/// LLVM's](http://llvm.org/docs/LangRef.html#memory-model-for-concurrent-operations).
///
/// For more information see the [nomicon](https://doc.rust-lang.org/nomicon/atomics.html).
/// For more information see the [nomicon][1].
/// [1]: https://doc.rust-lang.org/nomicon/atomics.html
#[stable(feature = "rust1", since = "1.0.0")]
#[derive(Copy, Clone, Debug)]
pub enum Ordering {