From 6b5609d23bf49423fdc6506281e0deac7c3a524e Mon Sep 17 00:00:00 2001
From: Daniel Micay <danielmicay@gmail.com>
Date: Mon, 8 Sep 2014 22:18:49 -0400
Subject: [PATCH] add likely / unlikely macros

---
 include/jemalloc/internal/util.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/jemalloc/internal/util.h b/include/jemalloc/internal/util.h
index d2b7a967..82a453d4 100644
--- a/include/jemalloc/internal/util.h
+++ b/include/jemalloc/internal/util.h
@@ -27,6 +27,14 @@
 #  define JEMALLOC_CC_SILENCE_INIT(v)
 #endif
 
+#ifdef __GNUC__
+#define likely(x) __builtin_expect(!!(x), 1)
+#define unlikely(x) __builtin_expect(!!(x), 0)
+#else
+#define likely(x) !!(x)
+#define unlikely(x) !!(x)
+#endif
+
 /*
  * Define a custom assert() in order to reduce the chances of deadlock during
  * assertion failure.