Function std::intrinsics::atomic_cxchg_acq_failrelaxed[][src]

pub unsafe extern "rust-intrinsic" fn atomic_cxchg_acq_failrelaxed<T>(
    dst: *mut T,
    old: T,
    src: T
) -> (T, bool) where
    T: Copy
🔬 This is a nightly-only experimental API. (core_intrinsics)

intrinsics are unlikely to ever be stabilized, instead they should be used through stabilized interfaces in the rest of the standard library

Expand description

如果当前值与 old 值相同,则存储一个值。

通过将 Ordering::Acquire 作为 successOrdering::Relaxed 作为 failure 参数,可以通过 compare_exchange 方法在 atomic 类型上使用此内联函数的稳定版本。 例如, AtomicBool::compare_exchange.