#define likely(x) __builtin_expect((x),1)
#define unlikely(x) __builtin_expect((x),0)
+#if __GNUC__ >= 4 || __GNUC__ == 3 && __GNUC_MINOR__ >= 3
+#define ALWAYS_INLINE inline __attribute__((always_inline))
+#else
+#define ALWAYS_INLINE inline
+#endif
+
#if __GNUC__ >= 4
#define LIKE_MALLOC __attribute__((malloc))
#define SENTINEL_CHECK __attribute__((sentinel))