util: Introduce ovs_assert macro.

[sliver-openvswitch.git] / lib / compiler.h

diff --git a/lib/compiler.h b/lib/compiler.h
index 27612a7..760389d 100644 (file)
--- a/lib/compiler.h
+++ b/lib/compiler.h
@@ -26,6 +26,8 @@
 #define ALWAYS_INLINE __attribute__((always_inline))
 #define WARN_UNUSED_RESULT __attribute__((__warn_unused_result__))
 #define SENTINEL(N) __attribute__((sentinel(N)))
+#define OVS_LIKELY(CONDITION) __builtin_expect(!!(CONDITION), 1)
+#define OVS_UNLIKELY(CONDITION) __builtin_expect(!!(CONDITION), 0)
 #else
 #define NO_RETURN
 #define OVS_UNUSED
@@ -35,6 +37,8 @@
 #define ALWAYS_INLINE
 #define WARN_UNUSED_RESULT
 #define SENTINEL(N)
+#define OVS_LIKELY(CONDITION) (!!(CONDITION))
+#define OVS_UNLIKELY(CONDITION) (!!(CONDITION))
 #endif
 
 /* ISO C says that a C implementation may choose any integer type for an enum