atomicIntAdd
fn
int atomicIntAdd(ref int atomic, int val)Atomically adds val to the value of atomic.
Think of this operation as an atomic version of { tmp = *atomic; *atomic += val; return tmp; }.
This call acts as a full compiler and hardware memory barrier.
Before version 2.30, this function did not return a value (but [glib.global.atomicIntExchangeAndAdd] did, and had the same meaning).
While atomic has a volatile qualifier, this is a historical artifact and the pointer passed to it should not be volatile.
Parameters
atomic | a pointer to a #gint or #guint |
val | the value to add |
Returns
the value of atomic before the add, signed