qb_atomic_int_exchange_and_add3
Atomically adds val to the integer pointed to by atomic.
Usage
#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
Overview
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.
Releases
4 releases since Debian 11 (Bullseye); the text changed 3 times.