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Make copying non-const cuda_data_ptrs to const ones nicer.

This commit is contained in:
Davis King 2020-01-20 07:57:33 -05:00
parent bd6994cc66
commit d88b2575a1
1 changed files with 13 additions and 0 deletions
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13
dlib/cuda/cuda_data_ptr.h
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@ -9,6 +9,7 @@
#include <memory>
#include <vector>
#include <type_traits>
namespace dlib
{
@ -203,6 +204,16 @@ namespace dlib
pdata = cuda_data_void_ptr(n*sizeof(T));
}
cuda_data_ptr(
const cuda_data_ptr<typename std::remove_const<T>::type> &other
) : num(other.num), pdata(other.pdata) {}
/*!
ensures
- *this is a copy of other. This version of the copy constructor allows
assigning non-const pointers to const ones. For instance, converting from
cuda_data_ptr<float> to cuda_data_ptr<const float>.
!*/
T* data() { return (T*)pdata.data(); }
const T* data() const { return (T*)pdata.data(); }
@ -237,6 +248,8 @@ namespace dlib
friend cuda_data_ptr<U> static_pointer_cast(const cuda_data_void_ptr &ptr);
template <typename U>
friend cuda_data_ptr<U> static_pointer_cast(const cuda_data_void_ptr &ptr, size_t num);
template <typename U>
friend class cuda_data_ptr;
size_t num = 0;
cuda_data_void_ptr pdata;