device_fixed_sequence.hpp

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/*
Copyright (c) 2014-2016, Scott Zuyderduyn
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*/

//----------------------------------------------------------------------------
// model/device_fixed_sequence.hpp
//
// Lowest-level representation of a fixed-size sequence in device memory.
//
// Author: Scott D. Zuyderduyn, Ph.D. (scott.zuyderduyn@utoronto.ca)
//----------------------------------------------------------------------------

#pragma once
#ifndef ECUDA_MODEL_DEVICE_FIXED_SEQUENCE_HPP
#define ECUDA_MODEL_DEVICE_FIXED_SEQUENCE_HPP

#include "../global.hpp"
#include "../memory.hpp"
#include "../iterator.hpp"

namespace ecuda {

namespace model {

template<typename T,std::size_t N,class P=typename ecuda::add_pointer<T>::type>
class device_fixed_sequence
{

public:
    typedef T                                                   value_type;
    typedef P                                                   pointer;
    typedef typename ecuda::add_lvalue_reference<T>::type       reference;
    typedef typename ecuda::add_lvalue_reference<const T>::type const_reference;
    typedef std::size_t                                         size_type;
    typedef std::ptrdiff_t                                      difference_type;

    typedef device_contiguous_iterator<value_type      > iterator;
    typedef device_contiguous_iterator<const value_type> const_iterator;

    typedef reverse_device_iterator<iterator      > reverse_iterator;
    typedef reverse_device_iterator<const_iterator> const_reverse_iterator;

private:
    pointer ptr;

protected:
    __HOST__ __DEVICE__ inline pointer& get_pointer() { return ptr; }
    __HOST__ __DEVICE__ inline const pointer& get_pointer() const { return ptr; }

public:
    __HOST__ __DEVICE__ device_fixed_sequence( pointer ptr = pointer() ) : ptr(ptr) {}
    __HOST__ __DEVICE__ device_fixed_sequence( const device_fixed_sequence& src ) : ptr(src.ptr) {}
    __HOST__ device_fixed_sequence& operator=( const device_fixed_sequence& src )
    {
        ptr = src.ptr;
        return *this;
    }
    #ifdef ECUDA_CPP11_AVAILABLE
    __HOST__ device_fixed_sequence( device_fixed_sequence&& src ) { ecuda::swap( ptr, src.ptr ); }
    __HOST__ device_fixed_sequence& operator=( device_fixed_sequence&& src )
    {
        ecuda::swap( ptr, src.ptr );
        return *this;
    }
    #endif

    __HOST__ __DEVICE__ inline __CONSTEXPR__ size_type size() const { return N; }

    __DEVICE__ inline reference       operator[]( const size_type x )       { return *(unmanaged_cast( ptr ) + x); }
    __DEVICE__ inline const_reference operator[]( const size_type x ) const { return *(unmanaged_cast( ptr ) + x); }

    __HOST__ __DEVICE__ inline iterator       begin()        { return iterator( unmanaged_cast(ptr) ); }
    __HOST__ __DEVICE__ inline iterator       end()          { return iterator( unmanaged_cast(ptr) + N ); }
    __HOST__ __DEVICE__ inline const_iterator begin() const  { return const_iterator( unmanaged_cast(ptr) ); }
    __HOST__ __DEVICE__ inline const_iterator end() const    { return const_iterator( unmanaged_cast(ptr) + N ); }
    #ifdef ECUDA_CPP11_AVAILABLE
    __HOST__ __DEVICE__ inline const_iterator cbegin() const { return const_iterator( unmanaged_cast(ptr) ); }
    __HOST__ __DEVICE__ inline const_iterator cend() const   { return const_iterator( unmanaged_cast(ptr) + N ); }
    #endif

    __HOST__ __DEVICE__ inline reverse_iterator       rbegin()        { return reverse_iterator(end()); }
    __HOST__ __DEVICE__ inline reverse_iterator       rend()          { return reverse_iterator(begin()); }
    __HOST__ __DEVICE__ inline const_reverse_iterator rbegin() const  { return const_reverse_iterator(end()); }
    __HOST__ __DEVICE__ inline const_reverse_iterator rend() const    { return const_reverse_iterator(begin()); }
    #ifdef ECUDA_CPP11_AVAILABLE
    __HOST__ __DEVICE__ inline const_reverse_iterator crbegin() const { return const_reverse_iterator(end()); }
    __HOST__ __DEVICE__ inline const_reverse_iterator crend() const   { return const_reverse_iterator(begin()); }
    #endif

    __HOST__ __DEVICE__ inline void swap( device_fixed_sequence& other ) { ecuda::swap( ptr, other.ptr ); }

};

} // namespace model

} // namespace ecuda

#endif