public static bool IsDefaultValue(in AtomicSafetyHandle handle)

AtomicSafetyHandle

true

false

An AtomicSafetyHandle still has its default value if it hasn't been initialized by being assigned or passed to AtomicSafetyHandle.Create.

By default, an AtomicSafetyHandle variable isn't initialized, which means it doesn't reference any central record and doesn't have a stored a version number. This changes when you pass the variable to AtomicSafetyHandle.Create, or when you assign it from an existing initialized AtomicSafetyHandle.