66 lines
1.9 KiB
Plaintext
66 lines
1.9 KiB
Plaintext
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//---------------------------------------------------------------------------//
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// Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
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//
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// Distributed under the Boost Software License, Version 1.0
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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//
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// See http://boostorg.github.com/compute for more information.
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//---------------------------------------------------------------------------//
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#ifndef BOOST_COMPUTE_ALGORITHM_FOR_EACH_HPP
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#define BOOST_COMPUTE_ALGORITHM_FOR_EACH_HPP
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#include <boost/compute/system.hpp>
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#include <boost/compute/command_queue.hpp>
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#include <boost/compute/detail/meta_kernel.hpp>
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#include <boost/compute/detail/iterator_range_size.hpp>
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namespace boost {
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namespace compute {
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namespace detail {
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template<class InputIterator, class Function>
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struct for_each_kernel : public meta_kernel
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{
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for_each_kernel(InputIterator first, InputIterator last, Function function)
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: meta_kernel("for_each")
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{
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// store range size
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m_count = detail::iterator_range_size(first, last);
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// setup kernel source
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*this << function(first[get_global_id(0)]) << ";\n";
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}
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void exec(command_queue &queue)
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{
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exec_1d(queue, 0, m_count);
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}
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size_t m_count;
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};
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} // end detail namespace
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/// Calls \p function on each element in the range [\p first, \p last).
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///
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/// \see transform()
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template<class InputIterator, class UnaryFunction>
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inline UnaryFunction for_each(InputIterator first,
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InputIterator last,
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UnaryFunction function,
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command_queue &queue = system::default_queue())
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{
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detail::for_each_kernel<InputIterator, UnaryFunction> kernel(first, last, function);
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kernel.exec(queue);
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return function;
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}
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} // end compute namespace
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} // end boost namespace
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#endif // BOOST_COMPUTE_ALGORITHM_FOR_EACH_HPP
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