From ac0d918bb49e0f8393b1e27662bc4c25113980b2 Mon Sep 17 00:00:00 2001
From: theuni <theuni-nospam@xbmc.org>
Date: Mon, 25 Nov 2013 19:24:23 -0500
Subject: [PATCH] leveldb: Use native Darwin memory barriers

---
 src/leveldb/port/atomic_pointer.h | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/src/leveldb/port/atomic_pointer.h b/src/leveldb/port/atomic_pointer.h
index e17bf435eab33..844fba25fedf3 100644
--- a/src/leveldb/port/atomic_pointer.h
+++ b/src/leveldb/port/atomic_pointer.h
@@ -50,6 +50,13 @@ namespace port {
 // http://msdn.microsoft.com/en-us/library/ms684208(v=vs.85).aspx
 #define LEVELDB_HAVE_MEMORY_BARRIER
 
+// Mac OS
+#elif defined(OS_MACOSX)
+inline void MemoryBarrier() {
+  OSMemoryBarrier();
+}
+#define LEVELDB_HAVE_MEMORY_BARRIER
+
 // Gcc on x86
 #elif defined(ARCH_CPU_X86_FAMILY) && defined(__GNUC__)
 inline void MemoryBarrier() {
@@ -62,19 +69,12 @@ inline void MemoryBarrier() {
 // Sun Studio
 #elif defined(ARCH_CPU_X86_FAMILY) && defined(__SUNPRO_CC)
 inline void MemoryBarrier() {
-  // See http://gcc.gnu.org/ml/gcc/2003-04/msg01180.html for a discussion on
+     	// See http://gcc.gnu.org/ml/gcc/2003-04/msg01180.html for a discussion on
   // this idiom. Also see http://en.wikipedia.org/wiki/Memory_ordering.
   asm volatile("" : : : "memory");
 }
 #define LEVELDB_HAVE_MEMORY_BARRIER
 
-// Mac OS
-#elif defined(OS_MACOSX)
-inline void MemoryBarrier() {
-  OSMemoryBarrier();
-}
-#define LEVELDB_HAVE_MEMORY_BARRIER
-
 // ARM Linux
 #elif defined(ARCH_CPU_ARM_FAMILY) && defined(__linux__)
 typedef void (*LinuxKernelMemoryBarrierFunc)(void);