From 4738ae085dcfb6698c52060e3d68c83170760181 Mon Sep 17 00:00:00 2001
From: Sergey Sharybin <sergey.vfx@gmail.com>
Date: Fri, 1 Apr 2016 09:16:46 +0200
Subject: Cycles: Fix for missing pthread's spin on OSX

---
 intern/cycles/util/util_thread.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'intern/cycles/util/util_thread.h')

diff --git a/intern/cycles/util/util_thread.h b/intern/cycles/util/util_thread.h
index d9cf452be13..59575f31c13 100644
--- a/intern/cycles/util/util_thread.h
+++ b/intern/cycles/util/util_thread.h
@@ -28,6 +28,10 @@
 #include <pthread.h>
 #include <queue>
 
+#ifdef __APPLE__
+#  include <libkern/OSAtomic.h>
+#endif
+
 #include "util_function.h"
 
 CCL_NAMESPACE_BEGIN
@@ -85,6 +89,19 @@ protected:
 
 class thread_spin_lock {
 public:
+#ifdef __APPLE__
+	inline thread_spin_lock() {
+		spin_ = OS_SPINLOCK_INIT;
+	}
+
+	inline void lock() {
+		OSSpinLockLock(&spin_);
+	}
+
+	inline void unlock() {
+		OSSpinLockUnlock(&spin_);
+	}
+#else  /* __APPLE__ */
 	inline thread_spin_lock() {
 		pthread_spin_init(&spin_, 0);
 	}
@@ -100,8 +117,13 @@ public:
 	inline void unlock() {
 		pthread_spin_unlock(&spin_);
 	}
+#endif  /* __APPLE__ */
 protected:
+#ifdef __APPLE__
+	OSSpinLock spin_;
+#else
 	pthread_spinlock_t spin_;
+#endif
 };
 
 CCL_NAMESPACE_END
-- 
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