1 files changed, 111 insertions, 0 deletions
diff --git a/LibOVR/Src/Kernel/OVR_RefCount.cpp b/LibOVR/Src/Kernel/OVR_RefCount.cpp
new file mode 100644
index 0000000..c6301ed
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+++ b/LibOVR/Src/Kernel/OVR_RefCount.cpp
@@ -0,0 +1,111 @@
+/************************************************************************************
+
+Filename    :   OVR_RefCount.cpp
+Content     :   Reference counting implementation
+Created     :   September 19, 2012
+Notes       : 
+
+Copyright   :   Copyright 2014 Oculus VR, Inc. All Rights reserved.
+
+Licensed under the Oculus VR Rift SDK License Version 3.1 (the "License"); 
+you may not use the Oculus VR Rift SDK except in compliance with the License, 
+which is provided at the time of installation or download, or which 
+otherwise accompanies this software in either electronic or hard copy form.
+
+You may obtain a copy of the License at
+
+http://www.oculusvr.com/licenses/LICENSE-3.1 
+
+Unless required by applicable law or agreed to in writing, the Oculus VR SDK 
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+************************************************************************************/
+
+#include "OVR_RefCount.h"
+#include "OVR_Atomic.h"
+#include "OVR_Log.h"
+
+namespace OVR {
+
+#ifdef OVR_CC_ARM
+void* ReturnArg0(void* p)
+{
+    return p;
+}
+#endif
+
+// ***** Reference Count Base implementation
+
+RefCountImplCore::~RefCountImplCore()
+{
+    // RefCount can be either 1 or 0 here.
+    //  0 if Release() was properly called.
+    //  1 if the object was declared on stack or as an aggregate.
+    OVR_ASSERT(RefCount <= 1);
+}
+
+#ifdef OVR_BUILD_DEBUG
+void RefCountImplCore::reportInvalidDelete(void *pmem)
+{
+    OVR_DEBUG_LOG(
+        ("Invalid delete call on ref-counted object at %p. Please use Release()", pmem));
+    OVR_ASSERT(0);
+}
+#endif
+
+RefCountNTSImplCore::~RefCountNTSImplCore()
+{
+    // RefCount can be either 1 or 0 here.
+    //  0 if Release() was properly called.
+    //  1 if the object was declared on stack or as an aggregate.
+    OVR_ASSERT(RefCount <= 1);
+}
+
+#ifdef OVR_BUILD_DEBUG
+void RefCountNTSImplCore::reportInvalidDelete(void *pmem)
+{
+    OVR_DEBUG_LOG(
+        ("Invalid delete call on ref-counted object at %p. Please use Release()", pmem));
+    OVR_ASSERT(0);
+}
+#endif
+
+
+// *** Thread-Safe RefCountImpl
+
+void    RefCountImpl::AddRef()
+{
+    AtomicOps<int>::ExchangeAdd_NoSync(&RefCount, 1);
+}
+void    RefCountImpl::Release()
+{
+    if ((AtomicOps<int>::ExchangeAdd_NoSync(&RefCount, -1) - 1) == 0)
+        delete this;
+}
+
+// *** Thread-Safe RefCountVImpl w/virtual AddRef/Release
+
+void    RefCountVImpl::AddRef()
+{
+    AtomicOps<int>::ExchangeAdd_NoSync(&RefCount, 1);
+}
+void    RefCountVImpl::Release()
+{
+    if ((AtomicOps<int>::ExchangeAdd_NoSync(&RefCount, -1) - 1) == 0)
+        delete this;
+}
+
+// *** NON-Thread-Safe RefCountImpl
+
+void    RefCountNTSImpl::Release() const
+{
+    RefCount--;
+    if (RefCount == 0)
+        delete this;
+}
+
+
+} // OVR