diff options
Diffstat (limited to 'src/types.h')
| -rw-r--r-- | src/types.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/types.h b/src/types.h index fd7bd21..86b3469 100644 --- a/src/types.h +++ b/src/types.h @@ -40,6 +40,14 @@ #error "Please add define for your compiler for UNUSED, or define to nothing for your compiler if not supported" #endif +#if defined(__GNUC__) && __GNUC__ >= 3 +#define likely(x) __builtin_expect(!!(x), 1) +#define unlikely(x) __builtin_expect(!!(x), 0) +#else +#define likely(x) (x) +#define unlikely(x) (x) +#endif + #ifdef __linux__ #define HAVE_THREAD_NAMES #define HAVE_FDATASYNC |