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Diffstat (limited to 'boost/compute/iterator/detail/get_base_iterator_buffer.hpp')
| -rw-r--r-- | boost/compute/iterator/detail/get_base_iterator_buffer.hpp | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/boost/compute/iterator/detail/get_base_iterator_buffer.hpp b/boost/compute/iterator/detail/get_base_iterator_buffer.hpp new file mode 100644 index 0000000000..3d14355115 --- /dev/null +++ b/boost/compute/iterator/detail/get_base_iterator_buffer.hpp @@ -0,0 +1,52 @@ +//---------------------------------------------------------------------------// +// Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com> +// +// Distributed under the Boost Software License, Version 1.0 +// See accompanying file LICENSE_1_0.txt or copy at +// http://www.boost.org/LICENSE_1_0.txt +// +// See http://boostorg.github.com/compute for more information. +//---------------------------------------------------------------------------// + +#ifndef BOOST_COMPUTE_ITERATOR_DETAIL_GET_BASE_ITERATOR_BUFFER_HPP +#define BOOST_COMPUTE_ITERATOR_DETAIL_GET_BASE_ITERATOR_BUFFER_HPP + +namespace boost { +namespace compute { +namespace detail { + +// returns the buffer for an iterator adaptor's base iterator if +// it exists, otherwise returns a null buffer object. +template<class Iterator> +inline const buffer& +get_base_iterator_buffer(const Iterator &iter, + typename boost::enable_if< + is_buffer_iterator< + typename Iterator::base_type + > + >::type* = 0) +{ + return iter.base().get_buffer(); +} + +template<class Iterator> +inline const buffer& +get_base_iterator_buffer(const Iterator &iter, + typename boost::disable_if< + is_buffer_iterator< + typename Iterator::base_type + > + >::type* = 0) +{ + (void) iter; + + static buffer null_buffer; + + return null_buffer; +} + +} // end detail namespace +} // end compute namespace +} // end boost namespace + +#endif // BOOST_COMPUTE_ITERATOR_DETAIL_GET_BASE_ITERATOR_BUFFER_HPP |