git-svn-id: http://webrtc.googlecode.com/svn/trunk@6 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/system_wrappers/source/atomic32.cc b/system_wrappers/source/atomic32.cc
new file mode 100644
index 0000000..3d6849e
--- /dev/null
+++ b/system_wrappers/source/atomic32.cc
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "atomic32_wrapper.h"
+
+#if defined(_WIN32)
+ #include "atomic32_windows.h"
+#elif defined(WEBRTC_LINUX)
+ #include "atomic32_linux.h"
+#elif defined(WEBRTC_MAC)
+ #include "atomic32_mac.h"
+#else
+ #error unsupported os!
+#endif
+
+namespace webrtc {
+Atomic32Wrapper::Atomic32Wrapper(WebRtc_Word32 initialValue)
+ : _impl(*new Atomic32Impl(initialValue))
+{
+}
+
+Atomic32Wrapper::~Atomic32Wrapper()
+{
+ delete &_impl;
+}
+
+WebRtc_Word32 Atomic32Wrapper::operator++()
+{
+ return ++_impl;
+}
+
+WebRtc_Word32 Atomic32Wrapper::operator--()
+{
+ return --_impl;
+}
+
+// Read and write to properly aligned variables are atomic operations.
+// Ex reference (for Windows): http://msdn.microsoft.com/en-us/library/ms684122(v=VS.85).aspx
+// TODO (hellner) operator= and Atomic32Wrapper::Value() can be fully
+// implemented here.
+Atomic32Wrapper& Atomic32Wrapper::operator=(const Atomic32Wrapper& rhs)
+{
+ if(this == &rhs)
+ {
+ return *this;
+ }
+ _impl = rhs._impl;
+ return *this;
+}
+
+Atomic32Wrapper& Atomic32Wrapper::operator=(WebRtc_Word32 rhs)
+{
+ _impl = rhs;
+ return *this;
+}
+
+WebRtc_Word32 Atomic32Wrapper::operator+=(WebRtc_Word32 rhs)
+{
+ return _impl += rhs;
+}
+
+WebRtc_Word32 Atomic32Wrapper::operator-=(WebRtc_Word32 rhs)
+{
+ return _impl -= rhs;
+}
+
+bool Atomic32Wrapper::CompareExchange(WebRtc_Word32 newValue,
+ WebRtc_Word32 compareValue)
+{
+ return _impl.CompareExchange(newValue,compareValue);
+}
+
+WebRtc_Word32 Atomic32Wrapper::Value() const
+{
+ return _impl.Value();
+}
+} // namespace webrtc