You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
32 lines
1.1 KiB
32 lines
1.1 KiB
8 years ago
|
/* util.h */
|
||
|
|
#ifndef UTIL_H
|
||
|
|
#define UTIL_H
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if (defined(__GNUC__) && __GNUC__ >= 4 && (__GNUC__ > 4 || __GNUC_MINOR__ >= 1) \
|
||
|
|
&& defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)) \
|
||
|
|
|| (defined(__INTEL_COMPILER) && !defined(_WIN32))
|
||
|
|
/* atomic operations are defined by ICC and GCC >= 4.1, but by the later one supposedly not for ARM */
|
||
|
|
/* note: ICC on ia64 platform possibly require ia64intrin.h, need testing */
|
||
|
|
# define atomic_compare_and_swap(ptr, oldval, newval) __sync_val_compare_and_swap(ptr, oldval, newval)
|
||
|
|
#elif defined(_MSC_VER)
|
||
|
|
# include <windows.h>
|
||
|
|
# define atomic_compare_and_swap(ptr, oldval, newval) InterlockedCompareExchange(ptr, newval, oldval)
|
||
|
|
#elif defined(__sun)
|
||
|
|
# include <atomic.h>
|
||
|
|
# define atomic_compare_and_swap(ptr, oldval, newval) atomic_cas_32(ptr, oldval, newval)
|
||
|
|
#else
|
||
|
|
/* pray that it will work */
|
||
|
|
# define atomic_compare_and_swap(ptr, oldval, newval) { if(*(ptr) == (oldval)) *(ptr) = (newval); }
|
||
|
|
# define NO_ATOMIC_BUILTINS
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
} /* extern "C" */
|
||
|
|
#endif /* __cplusplus */
|
||
|
|
|
||
|
|
#endif /* UTIL_H */
|