1 files changed, 100 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..a1171fa
--- /dev/null
+++ b/LibOVR/Src/Kernel/OVR_RefCount.cpp
@@ -0,0 +1,100 @@
+/************************************************************************************
+
+Filename    :   OVR_RefCount.cpp
+Content     :   Reference counting implementation
+Created     :   September 19, 2012
+Notes       : 
+
+Copyright   :   Copyright 2012 Oculus VR, Inc. All Rights reserved.
+
+Use of this software is subject to the terms of the Oculus license
+agreement provided at the time of installation or download, or which
+otherwise accompanies this software in either electronic or hard copy form.
+
+************************************************************************************/
+
+#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