stabilize build system: depends, installer, boost/bdb fixes, cross targets groundwork

2026-02-24 18:38:47 +00:00
parent da8c28aaeb
commit 65cb2619a7
13106 changed files with 2484322 additions and 1804 deletions
@@ -0,0 +1,99 @@
+//---------------------------------------------------------------------------//
+// 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_ALGORITHM_SCATTER_HPP
+#define BOOST_COMPUTE_ALGORITHM_SCATTER_HPP
+
+#include <boost/algorithm/string/replace.hpp>
+
+#include <boost/compute/system.hpp>
+#include <boost/compute/exception.hpp>
+#include <boost/compute/command_queue.hpp>
+#include <boost/compute/iterator/buffer_iterator.hpp>
+#include <boost/compute/type_traits/type_name.hpp>
+#include <boost/compute/detail/iterator_range_size.hpp>
+#include <boost/compute/detail/meta_kernel.hpp>
+
+namespace boost {
+namespace compute {
+namespace detail {
+
+template<class InputIterator, class MapIterator, class OutputIterator>
+class scatter_kernel : meta_kernel
+{
+public:
+    scatter_kernel() : meta_kernel("scatter")
+    {}
+
+    void set_range(InputIterator first,
+                   InputIterator last,
+                   MapIterator map,
+                   OutputIterator result)
+    {
+        m_count = iterator_range_size(first, last);
+        m_input_offset = first.get_index();
+        m_output_offset = result.get_index();
+
+        m_input_offset_arg = add_arg<uint_>("input_offset");
+        m_output_offset_arg = add_arg<uint_>("output_offset");
+
+        *this <<
+            "const uint i = get_global_id(0);\n" <<
+            "uint i1 = " << map[expr<uint_>("i")] << 
+                " + output_offset;\n" <<
+            "uint i2 = i + input_offset;\n" <<
+            result[expr<uint_>("i1")] << "=" << 
+                first[expr<uint_>("i2")] << ";\n";
+    }
+
+    event exec(command_queue &queue)
+    {
+        if(m_count == 0) {
+            return event();
+        }
+
+        set_arg(m_input_offset_arg, uint_(m_input_offset));
+        set_arg(m_output_offset_arg, uint_(m_output_offset));
+
+        return exec_1d(queue, 0, m_count);
+    }
+
+private:
+    size_t m_count;
+    size_t m_input_offset;    
+    size_t m_input_offset_arg;    
+    size_t m_output_offset;    
+    size_t m_output_offset_arg;    
+};
+
+} // end detail namespace
+
+/// Copies the elements from the range [\p first, \p last) to the range
+/// beginning at \p result using the output indices from the range beginning
+/// at \p map.
+///
+/// \see gather()
+template<class InputIterator, class MapIterator, class OutputIterator>
+inline void scatter(InputIterator first,
+                    InputIterator last,
+                    MapIterator map,
+                    OutputIterator result,
+                    command_queue &queue = system::default_queue())
+{
+    detail::scatter_kernel<InputIterator, MapIterator, OutputIterator> kernel;
+    
+    kernel.set_range(first, last, map, result);
+    kernel.exec(queue);
+}
+
+} // end compute namespace
+} // end boost namespace
+
+#endif // BOOST_COMPUTE_ALGORITHM_SCATTER_HPP