NAME
atomic_inc
,
atomic_inc_32
,
atomic_inc_uint
,
atomic_inc_ulong
,
atomic_inc_ptr
,
atomic_inc_64
,
atomic_inc_32_nv
,
atomic_inc_uint_nv
,
atomic_inc_ulong_nv
,
atomic_inc_ptr_nv
,
atomic_inc_64_nv
—
atomic increment operations
SYNOPSIS
#include
<sys/atomic.h>
void
atomic_inc_32
(volatile
uint32_t *ptr);
void
atomic_inc_uint
(volatile
unsigned int *ptr);
void
atomic_inc_ulong
(volatile
unsigned long *ptr);
void
atomic_inc_ptr
(volatile
void *ptr);
void
atomic_inc_64
(volatile
uint64_t *ptr);
uint32_t
atomic_inc_32_nv
(volatile
uint32_t *ptr);
unsigned int
atomic_inc_uint_nv
(volatile
unsigned int *ptr);
unsigned long
atomic_inc_ulong_nv
(volatile
unsigned long *ptr);
void *
atomic_inc_ptr_nv
(volatile
void *ptr);
uint64_t
atomic_inc_64_nv
(volatile
uint64_t *ptr);
DESCRIPTION
Theatomic_inc
family of functions increment (by one)
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.
SEE ALSO
HISTORY
The atomic_inc
functions first appeared in
NetBSD 5.0.