Function core::intrinsics::atomic_umax_acq

pub unsafe extern "rust-intrinsic" fn atomic_umax_acq<T: Copy>(
    dst: *mut T, 
    src: T
) -> T

🔬 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

使用无符号比较将当前值设为最大值。

通过将 Ordering::Acquire 传递为 order，可以通过 fetch_max 方法在 atomic 无符号整数类型上使用此内联函数的稳定版本。 例如， AtomicU32::fetch_max.