From db5672c132321a8c4c29cd7ed4ceb831774a03d1 Mon Sep 17 00:00:00 2001
From: yuqing <qing.yu@yundongpai.net>
Date: Fri, 29 Jun 2018 09:21:16 +0800
Subject: [PATCH] add likely and unlikely macro defines

---
 src/common_define.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/common_define.h b/src/common_define.h
index 51cd585..7e49161 100644
--- a/src/common_define.h
+++ b/src/common_define.h
@@ -188,6 +188,18 @@ typedef void* (*MallocFunc)(size_t size);
 #define strcasecmp	_stricmp
 #endif
 
+#ifndef likely
+
+#if defined(__GNUC__) &&  __GNUC__ >= 3
+#define likely(cond)   __builtin_expect ((cond), 1)
+#define unlikely(cond) __builtin_expect ((cond), 0)
+#else
+#define likely(cond)   (cond)
+#define unlikely(cond) (cond)
+#endif
+
+#endif
+
 #ifdef __cplusplus
 }
 #endif
-- 
GitLab