Compares atomic to oldval and, if equal, sets it to newval. If atomic was not equal to oldval then no change occurs.
This compare and exchange is done atomically.
Think of this operation as an atomic version of { if (*atomic == oldval) { *atomic = newval; return TRUE; } else return FALSE; }.
This call acts as a full compiler and hardware memory barrier.
While atomic has a volatile qualifier, this is a historical artifact and the pointer passed to it should not be volatile.
a pointer to a #gint or #guint
the value to compare with
the value to conditionally replace with
true if the exchange took place
Compares atomic to oldval and, if equal, sets it to newval. If atomic was not equal to oldval then no change occurs.
This compare and exchange is done atomically.
Think of this operation as an atomic version of { if (*atomic == oldval) { *atomic = newval; return TRUE; } else return FALSE; }.
This call acts as a full compiler and hardware memory barrier.
While atomic has a volatile qualifier, this is a historical artifact and the pointer passed to it should not be volatile.