08-05-2006
Why do you ask if this is valid? A simple compile would have shown whether it is valid or not. This looks like homework. This is against rule #6.
Quote:
(6) Do not post classroom or homework problems.
And please follow rule number 9 as well:
Quote:
(9) Edit your posts if you see spelling or grammar errors (don't write in cyberchat or cyberpunk style). English only.
"please" is only 3 more characters than "plz".
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LEARN ABOUT NETBSD
atomic_inc_64
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 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
The atomic_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
atomic_ops(3)
HISTORY
The atomic_inc functions first appeared in NetBSD 5.0.
BSD
April 11, 2007 BSD