1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Index stored in mapped file using Boost.Interprocess</title> 5<link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../../index.html" title="Chapter 1. Geometry"> 8<link rel="up" href="../rtree_examples.html" title="Examples"> 9<link rel="prev" href="index_stored_in_shared_memory_using_boost_interprocess.html" title="Index stored in shared memory using Boost.Interprocess"> 10<link rel="next" href="../../reference.html" title="Reference"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../boost.png"></td> 15<td align="center"><a href="../../../../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../../../../libs/libraries.htm">Libraries</a></td> 17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="index_stored_in_shared_memory_using_boost_interprocess.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../rtree_examples.html"><img src="../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../../reference.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h4 class="title"> 27<a name="geometry.spatial_indexes.rtree_examples.index_stored_in_mapped_file_using_boost_interprocess"></a><a class="link" href="index_stored_in_mapped_file_using_boost_interprocess.html" title="Index stored in mapped file using Boost.Interprocess">Index 28 stored in mapped file using Boost.Interprocess</a> 29</h4></div></div></div> 30<p> 31</p> 32<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span> 33 34<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">interprocess</span><span class="special">/</span><span class="identifier">managed_mapped_file</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 35 36<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">geometry</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 37<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">geometry</span><span class="special">/</span><span class="identifier">geometries</span><span class="special">/</span><span class="identifier">point</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 38<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">geometry</span><span class="special">/</span><span class="identifier">index</span><span class="special">/</span><span class="identifier">rtree</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 39 40<span class="keyword">namespace</span> <span class="identifier">bi</span> <span class="special">=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">interprocess</span><span class="special">;</span> 41<span class="keyword">namespace</span> <span class="identifier">bg</span> <span class="special">=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</span><span class="special">;</span> 42<span class="keyword">namespace</span> <span class="identifier">bgm</span> <span class="special">=</span> <span class="identifier">bg</span><span class="special">::</span><span class="identifier">model</span><span class="special">;</span> 43<span class="keyword">namespace</span> <span class="identifier">bgi</span> <span class="special">=</span> <span class="identifier">bg</span><span class="special">::</span><span class="identifier">index</span><span class="special">;</span> 44 45<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> 46<span class="special">{</span> 47 <span class="keyword">typedef</span> <span class="identifier">bgm</span><span class="special">::</span><span class="identifier">point</span><span class="special"><</span><span class="keyword">float</span><span class="special">,</span> <span class="number">2</span><span class="special">,</span> <span class="identifier">bg</span><span class="special">::</span><span class="identifier">cs</span><span class="special">::</span><span class="identifier">cartesian</span><span class="special">></span> <span class="identifier">point_t</span><span class="special">;</span> 48 49 <span class="keyword">typedef</span> <span class="identifier">point_t</span> <span class="identifier">value_t</span><span class="special">;</span> 50 <span class="keyword">typedef</span> <span class="identifier">bgi</span><span class="special">::</span><span class="identifier">linear</span><span class="special"><</span><span class="number">32</span><span class="special">,</span> <span class="number">8</span><span class="special">></span> <span class="identifier">params_t</span><span class="special">;</span> 51 <span class="keyword">typedef</span> <span class="identifier">bgi</span><span class="special">::</span><span class="identifier">indexable</span><span class="special"><</span><span class="identifier">value_t</span><span class="special">></span> <span class="identifier">indexable_t</span><span class="special">;</span> 52 <span class="keyword">typedef</span> <span class="identifier">bgi</span><span class="special">::</span><span class="identifier">equal_to</span><span class="special"><</span><span class="identifier">value_t</span><span class="special">></span> <span class="identifier">equal_to_t</span><span class="special">;</span> 53 <span class="keyword">typedef</span> <span class="identifier">bi</span><span class="special">::</span><span class="identifier">allocator</span><span class="special"><</span><span class="identifier">value_t</span><span class="special">,</span> <span class="identifier">bi</span><span class="special">::</span><span class="identifier">managed_mapped_file</span><span class="special">::</span><span class="identifier">segment_manager</span><span class="special">></span> <span class="identifier">allocator_t</span><span class="special">;</span> 54 <span class="keyword">typedef</span> <span class="identifier">bgi</span><span class="special">::</span><span class="identifier">rtree</span><span class="special"><</span><span class="identifier">value_t</span><span class="special">,</span> <span class="identifier">params_t</span><span class="special">,</span> <span class="identifier">indexable_t</span><span class="special">,</span> <span class="identifier">equal_to_t</span><span class="special">,</span> <span class="identifier">allocator_t</span><span class="special">></span> <span class="identifier">rtree_t</span><span class="special">;</span> 55 56 <span class="special">{</span> 57 <span class="identifier">bi</span><span class="special">::</span><span class="identifier">managed_mapped_file</span> <span class="identifier">file</span><span class="special">(</span><span class="identifier">bi</span><span class="special">::</span><span class="identifier">open_or_create</span><span class="special">,</span> <span class="string">"data.bin"</span><span class="special">,</span> <span class="number">1024</span><span class="special">*</span><span class="number">1024</span><span class="special">);</span> 58 <span class="identifier">allocator_t</span> <span class="identifier">alloc</span><span class="special">(</span><span class="identifier">file</span><span class="special">.</span><span class="identifier">get_segment_manager</span><span class="special">());</span> 59 <span class="identifier">rtree_t</span> <span class="special">*</span> <span class="identifier">rtree_ptr</span> <span class="special">=</span> <span class="identifier">file</span><span class="special">.</span><span class="identifier">find_or_construct</span><span class="special"><</span><span class="identifier">rtree_t</span><span class="special">>(</span><span class="string">"rtree"</span><span class="special">)(</span><span class="identifier">params_t</span><span class="special">(),</span> <span class="identifier">indexable_t</span><span class="special">(),</span> <span class="identifier">equal_to_t</span><span class="special">(),</span> <span class="identifier">alloc</span><span class="special">);</span> 60 61 <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="identifier">rtree_ptr</span><span class="special">-></span><span class="identifier">size</span><span class="special">()</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span> 62 63 <span class="identifier">rtree_ptr</span><span class="special">-></span><span class="identifier">insert</span><span class="special">(</span><span class="identifier">point_t</span><span class="special">(</span><span class="number">1.0</span><span class="special">,</span> <span class="number">1.0</span><span class="special">));</span> 64 <span class="identifier">rtree_ptr</span><span class="special">-></span><span class="identifier">insert</span><span class="special">(</span><span class="identifier">point_t</span><span class="special">(</span><span class="number">2.0</span><span class="special">,</span> <span class="number">2.0</span><span class="special">));</span> 65 66 <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="identifier">rtree_ptr</span><span class="special">-></span><span class="identifier">size</span><span class="special">()</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span> 67 <span class="special">}</span> 68 69 <span class="special">{</span> 70 <span class="identifier">bi</span><span class="special">::</span><span class="identifier">managed_mapped_file</span> <span class="identifier">file</span><span class="special">(</span><span class="identifier">bi</span><span class="special">::</span><span class="identifier">open_or_create</span><span class="special">,</span> <span class="string">"data.bin"</span><span class="special">,</span> <span class="number">1024</span><span class="special">*</span><span class="number">1024</span><span class="special">);</span> 71 <span class="identifier">allocator_t</span> <span class="identifier">alloc</span><span class="special">(</span><span class="identifier">file</span><span class="special">.</span><span class="identifier">get_segment_manager</span><span class="special">());</span> 72 <span class="identifier">rtree_t</span> <span class="special">*</span> <span class="identifier">rtree_ptr</span> <span class="special">=</span> <span class="identifier">file</span><span class="special">.</span><span class="identifier">find_or_construct</span><span class="special"><</span><span class="identifier">rtree_t</span><span class="special">>(</span><span class="string">"rtree"</span><span class="special">)(</span><span class="identifier">params_t</span><span class="special">(),</span> <span class="identifier">indexable_t</span><span class="special">(),</span> <span class="identifier">equal_to_t</span><span class="special">(),</span> <span class="identifier">alloc</span><span class="special">);</span> 73 74 <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="identifier">rtree_ptr</span><span class="special">-></span><span class="identifier">size</span><span class="special">()</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span> 75 76 <span class="identifier">rtree_ptr</span><span class="special">-></span><span class="identifier">insert</span><span class="special">(</span><span class="identifier">point_t</span><span class="special">(</span><span class="number">3.0</span><span class="special">,</span> <span class="number">3.0</span><span class="special">));</span> 77 <span class="identifier">rtree_ptr</span><span class="special">-></span><span class="identifier">insert</span><span class="special">(</span><span class="identifier">point_t</span><span class="special">(</span><span class="number">4.0</span><span class="special">,</span> <span class="number">4.0</span><span class="special">));</span> 78 79 <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="identifier">rtree_ptr</span><span class="special">-></span><span class="identifier">size</span><span class="special">()</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span> 80 <span class="special">}</span> 81 82 <span class="keyword">return</span> <span class="number">0</span><span class="special">;</span> 83<span class="special">}</span> 84</pre> 85<p> 86 </p> 87<h5> 88<a name="geometry.spatial_indexes.rtree_examples.index_stored_in_mapped_file_using_boost_interprocess.h0"></a> 89 <span class="phrase"><a name="geometry.spatial_indexes.rtree_examples.index_stored_in_mapped_file_using_boost_interprocess.expected_results"></a></span><a class="link" href="index_stored_in_mapped_file_using_boost_interprocess.html#geometry.spatial_indexes.rtree_examples.index_stored_in_mapped_file_using_boost_interprocess.expected_results">Expected 90 results</a> 91 </h5> 92<pre class="programlisting"><span class="number">0</span> 93<span class="number">2</span> 94<span class="number">2</span> 95<span class="number">4</span> 96</pre> 97</div> 98<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 99<td align="left"></td> 100<td align="right"><div class="copyright-footer">Copyright © 2009-2019 Barend Gehrels, Bruno Lalande, Mateusz Loskot, Adam 101 Wulkiewicz, Oracle and/or its affiliates<p> 102 Distributed under the Boost Software License, Version 1.0. (See accompanying 103 file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) 104 </p> 105</div></td> 106</tr></table> 107<hr> 108<div class="spirit-nav"> 109<a accesskey="p" href="index_stored_in_shared_memory_using_boost_interprocess.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../rtree_examples.html"><img src="../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../../reference.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> 110</div> 111</body> 112</html> 113
