Tracking Issue for atomic_try_update (original) (raw)

Feature gate: #![feature(atomic_try_update)]

This is a tracking issue for an infallible version of AtomicT::fetch_update as well as a new name for the existing fallible version.

When and if this gets stabilized, the existing fetch_update should be marked as a deprecated alias for try_update.

Public API

impl AtomicT { // same as fetch_update pub fn try_update( &self, set_order: Ordering, fetch_order: Ordering, f: impl FnMut(T) -> Option, ) -> Result<T, T>;

pub fn update(
    &self,
    set_order: Ordering,
    fetch_order: Ordering,
    f: impl FnMut(T) -> T,
) -> T;

}

Steps / History

• ACP: Infallible version of fetch_update libs-team#490
• Design requested by t-libs-api in Implement AtomicT::update & AtomicT::try_update #133829 (comment)
• Implementation: Implement AtomicT::update & AtomicT::try_update #133829
• Final comment period (FCP)1
• Stabilization PR: Stabilize atomic_try_updateand deprecate fetch_update starting 1.96.0 #148590

Unresolved Questions

• Implement AtomicT::update & AtomicT::try_update #133829 (comment)

1. https://std-dev-guide.rust-lang.org/feature-lifecycle/stabilization.html ↩