Method lrs::atomic::AtomicUsize::compare_exchange_acquire

Conditionally replaces the value in the atomic integer by a new one with acquire semantics.

Syntax

impl AtomicUsize {
    fn compare_exchange_acquire(&self, old: usize, new: usize) -> usize
}

Name	Description
old	The value the atomic integer is compared to.
new	The value to be stored in the atomic integer.

Returns the value previously stored in the atomic integer.

If the returned value is the same as old, the value in the atomic integer has been replaced by new.