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.