Program Listing for File emulation.hpp

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/*
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*  Copyright (c) 2011, Willow Garage, Inc.
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*  Author: Anatoly Baskeheev, Itseez Ltd, (myname.mysurname@mycompany.com)
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#ifndef PCL_GPU_EMULATION
#define PCL_GPU_EMULATION

#include "utils/warp_reduce.hpp"

namespace pcl
{
  namespace device
  {
    struct Emulation
    {
      static __forceinline__ __device__ int Ballot(int predicate, volatile int* cta_buffer)
      {
#if __CUDA_ARCH__ >= 200
        (void)cta_buffer;
        return __ballot(predicate);
#else
        int tid = threadIdx.x;
        cta_buffer[tid] = predicate ? (1 << (tid & 31)) : 0;
        return warp_reduce(cta_buffer);
#endif
      }
    };
  }
}

#endif /* PCL_GPU_EMULATION */