implement AtomicInt in win

engine/os/win/AtomicInt.h

@@ -0,0 +1,72 @@
+/*
+Copyright (c) 2013 Daniele Bartolini, Michele Rossi
+Copyright (c) 2012 Daniele Bartolini, Simone Boscaratto
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#pragma once
+
+#include "Types.h"
+
+namespace crown
+{
+
+struct AtomicInt
+{
+	explicit AtomicInt(int32_t value)
+	{
+		m_value = value;
+	}
+
+	AtomicInt& operator+=(int32_t value)
+	{
+		InterlockedAdd(&m_value, value);
+		return *this;
+	}
+
+	AtomicInt& operator++(void)
+	{
+		InterlockedIncrement(&m_value);
+	}
+
+	AtomicInt& operator--(void)
+	{
+		InterlockedDecrement(&m_value);
+	}
+
+	AtomicInt& operator=(int32_t value)
+	{
+		InterlockedExchange(&m_value, value);
+	}
+
+	operator int32_t()
+	{
+		return m_value;
+	}
+
+private:
+
+	LONG m_value;
+};
+
+} // namespace crown