util: Add macros for branch prediction

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diff --git a/src/daemon/util.h b/src/daemon/util.h
index bbe075bf11a5623a9120c112cdd41f7a3d9dddaf..86865e14c390ef7d943929b53015d4cfa254a60e 100644 (file)
--- a/src/daemon/util.h
+++ b/src/daemon/util.h
@@ -24,6 +24,10 @@
 #include <stdint.h>
 #include <stdlib.h>
 
+// Macros to help the compiler with branch prediction
+#define likely(x)               __builtin_expect(!!(x), 1)
+#define unlikely(x)             __builtin_expect(!!(x), 0)
+
 #ifndef HAVE_SECURE_GETENV
 #  ifdef HAVE___SECURE_GETENV
 #    define secure_getenv __secure_getenv