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SGReferencedData.h
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00001 /*
00002  * This program is free software; you can redistribute it and/or modify
00003  * it under the terms of the GNU General Public License as published by
00004  * the Free Software Foundation; either version 3 of the License, or
00005  * (at your option) any later version.
00006  *
00007  * Copyright (C) 2012 Soeren Sonnenburg
00008  */
00009 #ifndef __SGREFERENCED_DATA_H__
00010 #define __SGREFERENCED_DATA_H__
00011 
00012 #include <shogun/lib/common.h>
00013 
00014 namespace shogun
00015 {
00016 class RefCount;
00017 
00019 class SGReferencedData
00020 {
00021     public:
00023         SGReferencedData(bool ref_counting=true);
00024 
00026         SGReferencedData(const SGReferencedData &orig);
00027 
00029         SGReferencedData& operator= (const SGReferencedData &orig);
00030 
00036         virtual ~SGReferencedData();
00037 
00042         int32_t ref_count();
00043 
00044     protected:
00046         void copy_refcount(const SGReferencedData &orig);
00047 
00052         int32_t ref();
00053 
00059         int32_t unref();
00060 
00062         virtual void copy_data(const SGReferencedData &orig)=0;
00063 
00065         virtual void init_data()=0;
00066 
00068         virtual void free_data()=0;
00069 
00070     private:
00071 
00073         RefCount* m_refcount;
00074 };
00075 }
00076 #endif // __SGREFERENCED_DATA_H__
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