Man page - qb_atomic_int_exchange_and_add(3)
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Manual
QB_ATOMIC_INT_EXCHANGE_AND_ADD
NAMESYNOPSIS
PARAMS
DESCRIPTION
RETURN VALUE
SEE ALSO
COPYRIGHT
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
, /* a
pointer to an integer */
int32_t
val
/* the value to add to *atomic */
);
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.
SEE ALSO
qb_atomic_int_set (3), qb_atomic_int_compare_and_exchange (3), qb_atomic_int_get (3), qb_atomic_int_add (3), qb_atomic_init (3), qb_atomic_pointer_get (3), qb_atomic_pointer_compare_and_exchange (3), qb_atomic_pointer_set (3)
COPYRIGHT
Copyright (C) 2003 Sebastian Wilhelmi