1 files changed, 102 insertions, 0 deletions
diff --git a/NvCloth/src/ps/unix/PsUnixAtomic.cpp b/NvCloth/src/ps/unix/PsUnixAtomic.cpp
new file mode 100644
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+++ b/NvCloth/src/ps/unix/PsUnixAtomic.cpp
@@ -0,0 +1,102 @@
+// This code contains NVIDIA Confidential Information and is disclosed to you
+// under a form of NVIDIA software license agreement provided separately to you.
+//
+// Notice
+// NVIDIA Corporation and its licensors retain all intellectual property and
+// proprietary rights in and to this software and related documentation and
+// any modifications thereto. Any use, reproduction, disclosure, or
+// distribution of this software and related documentation without an express
+// license agreement from NVIDIA Corporation is strictly prohibited.
+//
+// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
+// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
+// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
+//
+// Information and code furnished is believed to be accurate and reliable.
+// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
+// information or for any infringement of patents or other rights of third parties that may
+// result from its use. No license is granted by implication or otherwise under any patent
+// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
+// This code supersedes and replaces all information previously supplied.
+// NVIDIA Corporation products are not authorized for use as critical
+// components in life support devices or systems without express written approval of
+// NVIDIA Corporation.
+//
+// Copyright (c) 2008-2017 NVIDIA Corporation. All rights reserved.
+// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
+// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
+#include "NvCloth/ps/Ps.h"
+#include "NvCloth/ps/PsAtomic.h"
+
+#if ! PX_EMSCRIPTEN
+#define PAUSE() asm("nop")
+#else
+#define PAUSE()
+#endif
+
+namespace physx
+{
+namespace shdfnd
+{
+
+void* atomicCompareExchangePointer(volatile void** dest, void* exch, void* comp)
+{
+	return __sync_val_compare_and_swap(const_cast<void**>(dest), comp, exch);
+}
+
+int32_t atomicCompareExchange(volatile int32_t* dest, int32_t exch, int32_t comp)
+{
+	return __sync_val_compare_and_swap(dest, comp, exch);
+}
+
+int32_t atomicIncrement(volatile int32_t* val)
+{
+	return __sync_add_and_fetch(val, 1);
+}
+
+int32_t atomicDecrement(volatile int32_t* val)
+{
+	return __sync_sub_and_fetch(val, 1);
+}
+
+int32_t atomicAdd(volatile int32_t* val, int32_t delta)
+{
+	return __sync_add_and_fetch(val, delta);
+}
+
+int32_t atomicMax(volatile int32_t* val, int32_t val2)
+{
+	int32_t oldVal, newVal;
+
+	do
+	{
+		PAUSE();
+		oldVal = *val;
+
+		if(val2 > oldVal)
+			newVal = val2;
+		else
+			newVal = oldVal;
+
+	} while(atomicCompareExchange(val, newVal, oldVal) != oldVal);
+
+	return *val;
+}
+
+int32_t atomicExchange(volatile int32_t* val, int32_t val2)
+{
+	int32_t newVal, oldVal;
+
+	do
+	{
+		PAUSE();
+		oldVal = *val;
+		newVal = val2;
+	} while(atomicCompareExchange(val, newVal, oldVal) != oldVal);
+
+	return oldVal;
+}
+
+} // namespace shdfnd
+} // namespace physx