Atomic.intCompareAndExchange

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. Since 2.4

class Atomic
static
int
intCompareAndExchange
(
int* atomic
,
int oldval
,
int newval
)

Parameters

atomic int*

a pointer to a gint or guint

oldval int

the value to compare with

newval int

the value to conditionally replace with

Return Value

Type: int

TRUE if the exchange took place

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