ceph/src/boost/boost/compute/container/detail/scalar.hpp

   1 //---------------------------------------------------------------------------//
   2 // Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
   3 //
   4 // Distributed under the Boost Software License, Version 1.0
   5 // See accompanying file LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt
   7 //
   8 // See http://boostorg.github.com/compute for more information.
   9 //---------------------------------------------------------------------------//
  10
  11 #ifndef BOOST_COMPUTE_CONTAINER_DETAIL_SCALAR_HPP
  12 #define BOOST_COMPUTE_CONTAINER_DETAIL_SCALAR_HPP
  13
  14 #include <boost/compute/buffer.hpp>
  15 #include <boost/compute/event.hpp>
  16 #include <boost/compute/detail/read_write_single_value.hpp>
  17
  18 namespace boost {
  19 namespace compute {
  20 namespace detail {
  21
  22 // scalar<T> provides a trivial "container" that stores a
  23 // single value in a memory buffer on a compute device
  24 template<class T>
  25 class scalar
  26 {
  27 public:
  28     typedef T value_type;
  29
  30     scalar(const context &context)
  31         : m_buffer(context, sizeof(T))
  32     {
  33     }
  34
  35     ~scalar()
  36     {
  37     }
  38
  39     T read(command_queue &queue) const
  40     {
  41         return read_single_value<T>(m_buffer, 0, queue);
  42     }
  43
  44     event write(const T &value, command_queue &queue)
  45     {
  46         return write_single_value<T>(value, m_buffer, 0, queue);
  47     }
  48
  49     const buffer& get_buffer() const
  50     {
  51         return m_buffer;
  52     }
  53
  54 private:
  55     buffer m_buffer;
  56 };
  57
  58 } // end detail namespace
  59 } // end compute namespace
  60 } // end boost namespace
  61
  62 #endif // BOOST_COMPUTE_CONTAINER_DETAIL_SCALAR_HPP