LONG
InterlockedDecrement(
IN PLONG Addend
);
Decrements a caller supplied variable of type LONG as an atomic operation.
Parameters
Addend
Points to a variable whose value is to be decremented.
Return Value
InterlockedDecrement returns the decremented value.
Comments
InterlockedDecrement should be used in place of the previous ExInterlockedDecrementLong. InterlockedDecrement is more efficient and faster. This routine is implemented inline by the compiler when appropriate and possible. The routine does not require a spin lock and can therefore be safely used on pageable data.
InterlockedDecrement is atomic only with respect to other InterlockedXxxxxx calls.
Callers of InterlockedDecrement run at any IRQL.
See Also
InterlockedIncrement, InterlockedExchange, ExInterlockedAddLargeInteger, ExInterlockedAddUlong