// In header: <boost/compute/allocator/pinned_allocator.hpp>

template<typename T> 
class pinned_allocator : public boost::compute::buffer_allocator< T > {
public:
  // construct/copy/destruct
  explicit pinned_allocator(const context &);
  pinned_allocator(const pinned_allocator< T > &);
  pinned_allocator< T > & operator=(const pinned_allocator< T > &);
  ~pinned_allocator();
};