Equalizer  1.4.1
sharedDataProxy.h
00001 
00002 /*
00003  * Copyright (c) 2009, Philippe Robert <philippe.robert@gmail.com> 
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions are met:
00007  *
00008  * - Redistributions of source code must retain the above copyright notice, this
00009  *   list of conditions and the following disclaimer.
00010  * - Redistributions in binary form must reproduce the above copyright notice,
00011  *   this list of conditions and the following disclaimer in the documentation
00012  *   and/or other materials provided with the distribution.
00013  * - Neither the name of Eyescale Software GmbH nor the names of its
00014  *   contributors may be used to endorse or promote products derived from this
00015  *   software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00018  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
00021  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
00022  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
00023  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00024  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00025  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
00026  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
00027  * POSSIBILITY OF SUCH DAMAGE.
00028  */
00029 
00030 #ifndef EQNBODY_DATAPROXY_H
00031 #define EQNBODY_DATAPROXY_H
00032 
00033 #include <eq/eq.h>
00034 
00035 namespace eqNbody
00036 {
00037     class SharedDataProxy : public co::Serializable
00038     {
00039     public:
00040 
00041         SharedDataProxy();
00042 
00043         void init( const unsigned int offset, const unsigned int numBytes, 
00044                    float *pos, float *vel, float *col );
00045         void init( float *pos, float *vel, float *col );
00046         void exit();    
00047         
00048         void markDirty();
00049 
00050         unsigned int getOffset() const {return _offset;}
00051         unsigned int getNumBytes() const {return _numBytes;}
00052         
00053         float* getPosition() const {return _hPos;}
00054         float* getVelocity() const {return _hVel;}
00055         
00056     protected:
00057         virtual void serialize( co::DataOStream& os, 
00058                                 const uint64_t dirtyBits );
00059         virtual void deserialize( co::DataIStream& is, 
00060                                   const uint64_t dirtyBits );
00061         virtual ChangeType getChangeType() const { return UNBUFFERED; }
00062         enum DirtyBits
00063         {
00064             DIRTY_DATA   = co::Serializable::DIRTY_CUSTOM << 0
00065         };
00066 
00067     private:
00068         unsigned int _offset;    // offset into the frameData's memory chunk
00069         unsigned int _numBytes;  // number of bytes to be written
00070         
00071         float*    _hPos;         // frameData's position data on the host
00072         float*    _hVel;         // frameData's velocity data on the host
00073         float*    _hCol;         // frameData's color data on the host
00074     };
00075 }
00076 
00077 #endif // EQNBODY_DATAPROXY_H
00078 
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