InterlockedExchangePointer
Atomically exchanges a pointer-sized value at a memory location and returns the previous value.
Syntax: InterlockedExchangePointer( Target , NewValue ) As LongPtr
- Target
- required LongPtr. The pointer-sized variable to update, passed by reference.
- NewValue
- required LongPtr. The new value to store at Target.
The store and the read of the prior value happen as a single atomic operation, observable by other threads as either fully-before or fully-after the call. Wraps the Win32 InterlockedExchangePointer intrinsic.