ATOMIC_ADD(3) | Library Functions Manual | ATOMIC_ADD(3) |
atomic_add
, atomic_add_32
,
atomic_add_int
,
atomic_add_long
,
atomic_add_ptr
, atomic_add_64
,
atomic_add_32_nv
,
atomic_add_int_nv
,
atomic_add_long_nv
,
atomic_add_ptr_nv
,
atomic_add_64_nv
—
#include <sys/atomic.h>
void
atomic_add_32
(volatile
uint32_t *ptr, int32_t
delta);
void
atomic_add_int
(volatile
unsigned int *ptr, int
delta);
void
atomic_add_long
(volatile
unsigned long *ptr, long
delta);
void
atomic_add_ptr
(volatile
void *ptr, ssize_t
delta);
void
atomic_add_64
(volatile
uint64_t *ptr, int64_t
delta);
uint32_t
atomic_add_32_nv
(volatile
uint32_t *ptr, int32_t
delta);
unsigned int
atomic_add_int_nv
(volatile
unsigned int *ptr, int
delta);
unsigned long
atomic_add_long_nv
(volatile
unsigned long *ptr, long
delta);
void *
atomic_add_ptr_nv
(volatile
void *ptr, ssize_t
delta);
uint64_t
atomic_add_64_nv
(volatile
uint64_t *ptr, int64_t
delta);
atomic_add
family of functions add a signed value
delta to the variable referenced by
ptr in an atomic fashion.
The *_nv
() variants of these functions
return the new value.
The 64-bit variants of these functions are available only on
platforms that can support atomic 64-bit memory access. Applications can
check for the availability of 64-bit atomic memory operations by testing if
the pre-processor macro __HAVE_ATOMIC64_OPS
is
defined.
atomic_add
functions first appeared in
NetBSD 5.0.
April 11, 2007 | NetBSD 9.2 |