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Update target_has_atomic documentation for stabilization

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Eric Huss 2022-03-27 15:13:17 -07:00
parent ab0c2e18dc
commit 182d4b32d5
1 changed files with 4 additions and 3 deletions
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7
library/core/src/sync/atomic.rs
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@ -65,9 +65,10 @@
//! For reference, the `std` library requires `AtomicBool`s and pointer-sized atomics, although
//! `core` does not.
//!
//! Currently you'll need to use `#[cfg(target_arch)]` primarily to
//! conditionally compile in code with atomics. There is an unstable
//! `#[cfg(target_has_atomic)]` as well which may be stabilized in the future.
//! The `#[cfg(target_has_atomic)]` attribute can be used to conditionally
//! compile based on the target's supported bit widths. It is a key-value
//! option set for each supported size, with values "8", "16", "32", "64",
//! "128", and "ptr" for pointer-sized atomics.
//!
//! [lock-free]: https://en.wikipedia.org/wiki/Non-blocking_algorithm
//!