thrust_view.h

/*
 * cugar
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#pragma once

#include <cugar/basic/types.h>
#include <cugar/basic/vector_view.h>
#include <thrust/host_vector.h>
#include <thrust/device_vector.h>

namespace cugar {

template <typename T> struct plain_view_subtype< thrust::host_vector<T> >           { typedef vector_view<T*,uint64> type; };
template <typename T> struct plain_view_subtype< thrust::device_vector<T> >         { typedef vector_view<T*,uint64> type; };
template <typename T> struct plain_view_subtype< const thrust::host_vector<T> >     { typedef vector_view<const T*,uint64> type; };
template <typename T> struct plain_view_subtype< const thrust::device_vector<T> >   { typedef vector_view<const T*,uint64> type; };

template <typename T>
vector_view<T*,uint64> plain_view(thrust::device_vector<T>& vec) { return vector_view<T*,uint64>( vec.size(), vec.size() ? thrust::raw_pointer_cast( &vec.front() ) : NULL ); }

template <typename T>
vector_view<const T*,uint64> plain_view(const thrust::device_vector<T>& vec) { return vector_view<const T*,uint64>( vec.size(), vec.size() ? thrust::raw_pointer_cast( &vec.front() ) : NULL ); }

template <typename T>
vector_view<T*,uint64> plain_view(thrust::host_vector<T>& vec) { return vector_view<T*,uint64>( vec.size(), vec.size() ? thrust::raw_pointer_cast( &vec.front() ) : NULL ); }

template <typename T>
vector_view<const T*,uint64> plain_view(const thrust::host_vector<T>& vec) { return vector_view<const T*,uint64>( vec.size(), vec.size() ? thrust::raw_pointer_cast( &vec.front() ) : NULL ); }

template <typename T, typename Alloc>
T* raw_pointer(thrust::device_vector<T,Alloc>& vec) { return vec.size() ? thrust::raw_pointer_cast( &vec.front() ) : NULL; }

template <typename T, typename Alloc>
const T* raw_pointer(const thrust::device_vector<T,Alloc>& vec) { return vec.size() ? thrust::raw_pointer_cast( &vec.front() ) : NULL; }

template <typename T>
T* raw_pointer(thrust::host_vector<T>& vec) { return vec.size() ? thrust::raw_pointer_cast( &vec.front() ) : NULL; }

template <typename T>
const T* raw_pointer(const thrust::host_vector<T>& vec) { return vec.size(), vec.size() ? thrust::raw_pointer_cast( &vec.front() ) : NULL; }

template <typename T>
typename thrust::device_vector<T>::iterator begin(thrust::device_vector<T>& vec) { return vec.begin; }

template <typename T>
typename thrust::device_vector<T>::const_iterator begin(const thrust::device_vector<T>& vec) { return vec.begin; }

template <typename T>
typename thrust::host_vector<T>::iterator begin(thrust::host_vector<T>& vec) { return vec.begin; }

template <typename T>
typename thrust::host_vector<T>::const_iterator begin(const thrust::host_vector<T>& vec) { return vec.begin; }

} // namespace cugar