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diff --git a/src/RubyObjectTracker.h b/src/RubyObjectTracker.h
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+/*
+ * vdr-scripting - A plugin for the Linux Video Disk Recorder
+ * Copyright (c) 2009 Tobias Grimm <vdr@e-tobi.net>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#ifndef __RUBY_OBJECT_TRACKER_H
+#define __RUBY_OBJECT_TRACKER_H
+
+#include<map>
+#include<ruby.h>
+
+class TrackedRubyObject
+{
+    private:
+        VALUE _rubyObject;
+        bool _keepAlive;
+
+    public:
+        TrackedRubyObject();
+        TrackedRubyObject(VALUE rubyObject, bool keepAlive);
+        VALUE RubyObject();
+        void KeepAlive(bool keepAlive);
+        void Mark();
+};
+
+class RubyObjectTracker
+{
+    private:
+        std::map<void*, TrackedRubyObject> _map;
+
+    public:
+        void Track(void* cppPointer, VALUE rubyObject);
+        void Untrack(void* cppPointer);
+        VALUE GetTrackedRubyObject(void* cppPointer);
+        void KeepRubyObjectAlive(void* cppPointer);
+        void MarkTrackedRubyObjects();
+        static void MarkTrackedRubyObjects(void* self);
+};
+
+#endif