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ATOMIC_INC(3)		 BSD Library Functions Manual		 ATOMIC_INC(3)

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 incre‐
     ment 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
     The atomic_inc family of functions increment (by one) the variable refer‐
     enced 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
     atomic_ops(3)

HISTORY
     The atomic_inc functions first appeared in NetBSD 5.0.

BSD				April 11, 2007				   BSD

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