1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Class stack_context</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. Context"> 8<link rel="up" href="../stack.html" title="Stack allocation"> 9<link rel="prev" href="stack_traits.html" title="Class stack_traits"> 10<link rel="next" href="valgrind.html" title="Support for valgrind"> 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="stack_traits.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../stack.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="valgrind.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h3 class="title"> 27<a name="context.stack.stack_context"></a><a class="link" href="stack_context.html" title="Class stack_context">Class <span class="emphasis"><em>stack_context</em></span></a> 28</h3></div></div></div> 29<p> 30 <span class="bold"><strong>Boost.Context</strong></span> provides the class <span class="emphasis"><em>stack_context</em></span> 31 which will contain the stack pointer and the size of the stack. In case of 32 a <a class="link" href="segmented.html#segmented"><span class="emphasis"><em>segmented_stack</em></span></a>, 33 <span class="emphasis"><em>stack_context</em></span> contains some extra control structures. 34 </p> 35<pre class="programlisting"><span class="keyword">struct</span> <span class="identifier">stack_context</span> <span class="special">{</span> 36 <span class="keyword">void</span> <span class="special">*</span> <span class="identifier">sp</span><span class="special">;</span> 37 <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">size</span><span class="special">;</span> 38 39 <span class="comment">// might contain additional control structures</span> 40 <span class="comment">// for segmented stacks</span> 41<span class="special">}</span> 42</pre> 43<h5> 44<a name="context.stack.stack_context.h0"></a> 45 <span class="phrase"><a name="context.stack.stack_context._code__phrase_role__keyword__void__phrase___phrase_role__special_____phrase___phrase_role__identifier__sp__phrase___code_"></a></span><a class="link" href="stack_context.html#context.stack.stack_context._code__phrase_role__keyword__void__phrase___phrase_role__special_____phrase___phrase_role__identifier__sp__phrase___code_"><code class="computeroutput"><span class="keyword">void</span> <span class="special">*</span> <span class="identifier">sp</span></code></a> 46 </h5> 47<div class="variablelist"> 48<p class="title"><b></b></p> 49<dl class="variablelist"> 50<dt><span class="term">Value:</span></dt> 51<dd><p> 52 Pointer to the beginning of the stack. 53 </p></dd> 54</dl> 55</div> 56<h5> 57<a name="context.stack.stack_context.h1"></a> 58 <span class="phrase"><a name="context.stack.stack_context._code__phrase_role__identifier__std__phrase__phrase_role__special______phrase__phrase_role__identifier__size_t__phrase___phrase_role__identifier__size__phrase___code_"></a></span><a class="link" href="stack_context.html#context.stack.stack_context._code__phrase_role__identifier__std__phrase__phrase_role__special______phrase__phrase_role__identifier__size_t__phrase___phrase_role__identifier__size__phrase___code_"><code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> 59 <span class="identifier">size</span></code></a> 60 </h5> 61<div class="variablelist"> 62<p class="title"><b></b></p> 63<dl class="variablelist"> 64<dt><span class="term">Value:</span></dt> 65<dd><p> 66 Actual size of the stack. 67 </p></dd> 68</dl> 69</div> 70</div> 71<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 72<td align="left"></td> 73<td align="right"><div class="copyright-footer">Copyright © 2014 Oliver Kowalke<p> 74 Distributed under the Boost Software License, Version 1.0. (See accompanying 75 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>) 76 </p> 77</div></td> 78</tr></table> 79<hr> 80<div class="spirit-nav"> 81<a accesskey="p" href="stack_traits.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../stack.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="valgrind.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> 82</div> 83</body> 84</html> 85
