Function std::intrinsics::atomic_cxchg_failacq
pub unsafe extern "rust-intrinsic" fn atomic_cxchg_failacq<T>( dst: *mut T, old: T, src: T) -> (T, bool) where T: Copy,
core_intrinsics)intrinsics are unlikely to ever be stabilized, instead they should be used through stabilized interfaces in the rest of the standard library
Stores a value if the current value is the same as the old value.
The stabilized version of this intrinsic is available on the atomic types via the compare_exchange method by passing Ordering::SeqCst as the success and Ordering::Acquire as the failure parameters. For example, AtomicBool::compare_exchange.
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Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/intrinsics/fn.atomic_cxchg_failacq.html