emdata_cuda.h

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/*
 * Author: Steven Ludtke, 04/10/2003 (sludtke@bcm.edu)
 * Copyright (c) 2000-2006 Baylor College of Medicine
 *
 * This software is issued under a joint BSD/GNU license. You may use the
 * source code in this file under either license. However, note that the
 * complete EMAN2 and SPARX software packages have some GPL dependencies,
 * so you are responsible for compliance with the licenses of these packages
 * if you opt to use BSD licensing. The warranty disclaimer below holds
 * in either instance.
 *
 * This complete copyright notice must be included in any revised version of the
 * source code. Additional authorship citations may be added, but existing
 * author citations must be preserved.
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * */
 
#ifndef eman__emdatacuda_h__
#define eman__emdatacuda_h__ 1
 
#ifdef EMAN2_USING_CUDA
 
#define MEMPOOL_SIZE 10
public:
        
        bool copy_to_cuda() const;
        
        bool copy_to_cudaro() const;
        
        bool copy_from_device(const bool rocpy = false);
        
        bool copy_rw_to_ro() const; //we are not changing any of the CPU data!!!
        
        void elementaccessed() const;
        
        void bindcudaarrayA(const bool intp_mode) const;
        
        void unbindcudaarryA() const;
        
        void bindcudaarrayB(const bool intp_mode) const;
        
        void unbindcudaarryB() const;
        
        void runcuda(float * results) const;
        
        bool isrodataongpu() const;
        
        inline  void roneedsanupdate()
        {
                roneedsupdate = true;
        }
 
        inline float* getcudarwdata() const
        {
                if(cudarwdata != 0) elementaccessed();
                return cudarwdata;
        }
        
        inline cudaArray* getcudarodata() const
        {
                if(cudarodata != 0) elementaccessed();
                return cudarodata;
        }
        
        bool rw_alloc() const;
        
        bool ro_alloc() const;
        
        void rw_free() const;
        
        void ro_free() const;
        
        void addtolist() const;
        
        void removefromlist() const;
        
        bool freeup_devicemem(const int& num_bytes) const;
        
        void setdirtybit() const;
        
        static void switchoncuda();
        
        static void switchoffcuda();
        
        static void cuda_cleanup();
        
        static bool cuda_initialize();
        
        static bool usecuda;
        
        static const char* getcudalock();
 
private:
        //pointers to cuda data
        mutable float* cudarwdata;      //we can still change GPU data on a cost object
        mutable cudaArray* cudarodata;  //we can still change GPU data on a cost object
        
        mutable size_t num_bytes;
        
        //pointers used in doubly limked list
        const mutable EMData* nextlistitem;
        const mutable EMData* prevlistitem;
        
        mutable bool roneedsupdate;
        mutable bool cudadirtybit;
        
        static int cudadevicenum;
        static int memused;
        static int fudgemem;
        const static EMData* firstinlist;
        const static EMData* lastinlist;
        static bool nocudainit;
        
#endif // EMAN2_USING_CUDA      
 
#endif //eman__emdatacuda_h__ 1