1 files changed, 21 insertions, 0 deletions
diff --git a/Src/nu/refcount.h b/Src/nu/refcount.h
new file mode 100644
index 00000000..9ab52f4e
--- /dev/null
+++ b/Src/nu/refcount.h
@@ -0,0 +1,21 @@
+#pragma once
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+template <class ifc_t>
+class Countable : public ifc_t
+{
+public:
+	Countable() 
+	{
+		ref_count=1;
+	}
+
+	// this needs to be done like this otherwise the destructor doesn't get called properly (we don't want virtual destructor for various reasons)
+#define REFERENCE_COUNT_IMPLEMENTATION 	size_t AddRef() { return InterlockedIncrement((LONG*)&ref_count);	}\
+	size_t Release() { if (!ref_count) return ref_count; LONG r = InterlockedDecrement((LONG*)&ref_count); if (!r) delete(this); return r; }
+protected:
+	size_t ref_count;
+};
+
+#define REFERENCE_COUNTED CB(ADDREF, AddRef); CB(RELEASE, Release);
+