NAME¶
qb_atomic_int_exchange_and_add - Atomically adds val to the integer pointed to
by atomic.
SYNOPSIS¶
#include <qb/qbatomic.h>
int32_t qb_atomic_int_exchange_and_add(
volatile int32_t QB_GNUC_MAY_ALIAS *atomic,
int32_t val
);
PARAMS¶
atomic a pointer to an integer
val the value to add to *atomic
DESCRIPTION¶
It returns the value of *atomic just before the addition took place. Also acts
as a memory barrier.
RETURN VALUE¶
the value of *atomic before the addition.
COPYRIGHT¶
Copyright (C) 2003 Sebastian Wilhelmi
