sub atomic-fetch-dec
Documentation for sub atomic-fetch-dec
assembled from the following types:
class atomicint
From atomicint
(atomicint) sub atomic-fetch-dec
Defined as:
multi sub atomic-fetch-dec(atomicint $ is rw)
Performs an atomic decrement on a native integer. This will be performed using hardware-provided atomic operations. Since the operation is atomic, it is safe to use without acquiring a lock. Returns the value as seen before decrementing it. Overflow will wrap around silently.