From c73deeb2903831b63025f9d2f38dc01e93346d1e Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Mon, 25 Jun 2018 16:09:15 +0200
Subject: [SERVER] Use likely/unlikely in uplink disk writing loop

---
 src/types.h | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'src/types.h')

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
-- 
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