ceph/src/boost/libs/context/doc/html/context/abstract_context/stack/stack_traits.html

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   4 <title>Class stack_traits</title>
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  26 <div class="titlepage"><div><div><h4 class="title">
  27 <a name="context.abstract_context.stack.stack_traits"></a><a class="link" href="stack_traits.html" title="Class stack_traits">Class
  28         <span class="emphasis"><em>stack_traits</em></span></a>
  29 </h4></div></div></div>
  30 <p>
  31           <span class="emphasis"><em>stack_traits</em></span> models a <span class="emphasis"><em>stack-traits</em></span>
  32           providing a way to access certain properites defined by the enironment.
  33           Stack allocators use <span class="emphasis"><em>stack-traits</em></span> to allocate stacks.
  34         </p>
  35 <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">context</span><span class="special">/</span><span class="identifier">stack_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
  36
  37 <span class="keyword">struct</span> <span class="identifier">stack_traits</span>
  38 <span class="special">{</span>
  39     <span class="keyword">static</span> <span class="keyword">bool</span> <span class="identifier">is_unbounded</span><span class="special">()</span> <span class="keyword">noexcept</span><span class="special">;</span>
  40
  41     <span class="keyword">static</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">page_size</span><span class="special">()</span> <span class="keyword">noexcept</span><span class="special">;</span>
  42
  43     <span class="keyword">static</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">default_size</span><span class="special">()</span> <span class="keyword">noexcept</span><span class="special">;</span>
  44
  45     <span class="keyword">static</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">minimum_size</span><span class="special">()</span> <span class="keyword">noexcept</span><span class="special">;</span>
  46
  47     <span class="keyword">static</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">maximum_size</span><span class="special">()</span> <span class="keyword">noexcept</span><span class="special">;</span>
  48 <span class="special">}</span>
  49 </pre>
  50 <h6>
  51 <a name="context.abstract_context.stack.stack_traits.h0"></a>
  52           <span><a name="context.abstract_context.stack.stack_traits._code__phrase_role__keyword__static__phrase___phrase_role__keyword__bool__phrase___phrase_role__identifier__is_unbounded__phrase__phrase_role__special______phrase___code_"></a></span><a class="link" href="stack_traits.html#context.abstract_context.stack.stack_traits._code__phrase_role__keyword__static__phrase___phrase_role__keyword__bool__phrase___phrase_role__identifier__is_unbounded__phrase__phrase_role__special______phrase___code_"><code class="computeroutput"><span class="keyword">static</span> <span class="keyword">bool</span> <span class="identifier">is_unbounded</span><span class="special">()</span></code></a>
  53         </h6>
  54 <div class="variablelist">
  55 <p class="title"><b></b></p>
  56 <dl>
  57 <dt><span class="term">Returns:</span></dt>
  58 <dd><p>
  59                 Returns <code class="computeroutput"><span class="keyword">true</span></code> if the
  60                 environment defines no limit for the size of a stack.
  61               </p></dd>
  62 <dt><span class="term">Throws:</span></dt>
  63 <dd><p>
  64                 Nothing.
  65               </p></dd>
  66 </dl>
  67 </div>
  68 <h6>
  69 <a name="context.abstract_context.stack.stack_traits.h1"></a>
  70           <span><a name="context.abstract_context.stack.stack_traits._code__phrase_role__keyword__static__phrase___phrase_role__identifier__std__phrase__phrase_role__special______phrase__phrase_role__identifier__size_t__phrase___phrase_role__identifier__page_size__phrase__phrase_role__special______phrase___code_"></a></span><a class="link" href="stack_traits.html#context.abstract_context.stack.stack_traits._code__phrase_role__keyword__static__phrase___phrase_role__identifier__std__phrase__phrase_role__special______phrase__phrase_role__identifier__size_t__phrase___phrase_role__identifier__page_size__phrase__phrase_role__special______phrase___code_"><code class="computeroutput"><span class="keyword">static</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">page_size</span><span class="special">()</span></code></a>
  71         </h6>
  72 <div class="variablelist">
  73 <p class="title"><b></b></p>
  74 <dl>
  75 <dt><span class="term">Returns:</span></dt>
  76 <dd><p>
  77                 Returns the page size in bytes.
  78               </p></dd>
  79 <dt><span class="term">Throws:</span></dt>
  80 <dd><p>
  81                 Nothing.
  82               </p></dd>
  83 </dl>
  84 </div>
  85 <h6>
  86 <a name="context.abstract_context.stack.stack_traits.h2"></a>
  87           <span><a name="context.abstract_context.stack.stack_traits._code__phrase_role__keyword__static__phrase___phrase_role__identifier__std__phrase__phrase_role__special______phrase__phrase_role__identifier__size_t__phrase___phrase_role__identifier__default_size__phrase__phrase_role__special______phrase___code_"></a></span><a class="link" href="stack_traits.html#context.abstract_context.stack.stack_traits._code__phrase_role__keyword__static__phrase___phrase_role__identifier__std__phrase__phrase_role__special______phrase__phrase_role__identifier__size_t__phrase___phrase_role__identifier__default_size__phrase__phrase_role__special______phrase___code_"><code class="computeroutput"><span class="keyword">static</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">default_size</span><span class="special">()</span></code></a>
  88         </h6>
  89 <div class="variablelist">
  90 <p class="title"><b></b></p>
  91 <dl>
  92 <dt><span class="term">Returns:</span></dt>
  93 <dd><p>
  94                 Returns a default stack size, which may be platform specific. If
  95                 the stack is unbounded then the present implementation returns the
  96                 maximum of <code class="computeroutput"><span class="number">64</span> <span class="identifier">kB</span></code>
  97                 and <code class="computeroutput"><span class="identifier">minimum_size</span><span class="special">()</span></code>.
  98               </p></dd>
  99 <dt><span class="term">Throws:</span></dt>
 100 <dd><p>
 101                 Nothing.
 102               </p></dd>
 103 </dl>
 104 </div>
 105 <h6>
 106 <a name="context.abstract_context.stack.stack_traits.h3"></a>
 107           <span><a name="context.abstract_context.stack.stack_traits._code__phrase_role__keyword__static__phrase___phrase_role__identifier__std__phrase__phrase_role__special______phrase__phrase_role__identifier__size_t__phrase___phrase_role__identifier__minimum_size__phrase__phrase_role__special______phrase___code_"></a></span><a class="link" href="stack_traits.html#context.abstract_context.stack.stack_traits._code__phrase_role__keyword__static__phrase___phrase_role__identifier__std__phrase__phrase_role__special______phrase__phrase_role__identifier__size_t__phrase___phrase_role__identifier__minimum_size__phrase__phrase_role__special______phrase___code_"><code class="computeroutput"><span class="keyword">static</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">minimum_size</span><span class="special">()</span></code></a>
 108         </h6>
 109 <div class="variablelist">
 110 <p class="title"><b></b></p>
 111 <dl>
 112 <dt><span class="term">Returns:</span></dt>
 113 <dd><p>
 114                 Returns the minimum size in bytes of stack defined by the environment
 115                 (Win32 4kB/Win64 8kB, defined by rlimit on POSIX).
 116               </p></dd>
 117 <dt><span class="term">Throws:</span></dt>
 118 <dd><p>
 119                 Nothing.
 120               </p></dd>
 121 </dl>
 122 </div>
 123 <h6>
 124 <a name="context.abstract_context.stack.stack_traits.h4"></a>
 125           <span><a name="context.abstract_context.stack.stack_traits._code__phrase_role__keyword__static__phrase___phrase_role__identifier__std__phrase__phrase_role__special______phrase__phrase_role__identifier__size_t__phrase___phrase_role__identifier__maximum_size__phrase__phrase_role__special______phrase___code_"></a></span><a class="link" href="stack_traits.html#context.abstract_context.stack.stack_traits._code__phrase_role__keyword__static__phrase___phrase_role__identifier__std__phrase__phrase_role__special______phrase__phrase_role__identifier__size_t__phrase___phrase_role__identifier__maximum_size__phrase__phrase_role__special______phrase___code_"><code class="computeroutput"><span class="keyword">static</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">maximum_size</span><span class="special">()</span></code></a>
 126         </h6>
 127 <div class="variablelist">
 128 <p class="title"><b></b></p>
 129 <dl>
 130 <dt><span class="term">Preconditions:</span></dt>
 131 <dd><p>
 132                 <code class="computeroutput"><span class="identifier">is_unbounded</span><span class="special">()</span></code>
 133                 returns <code class="computeroutput"><span class="keyword">false</span></code>.
 134               </p></dd>
 135 <dt><span class="term">Returns:</span></dt>
 136 <dd><p>
 137                 Returns the maximum size in bytes of stack defined by the environment.
 138               </p></dd>
 139 <dt><span class="term">Throws:</span></dt>
 140 <dd><p>
 141                 Nothing.
 142               </p></dd>
 143 </dl>
 144 </div>
 145 </div>
 146 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 147 <td align="left"></td>
 148 <td align="right"><div class="copyright-footer">Copyright &#169; 2014 Oliver Kowalke<p>
 149         Distributed under the Boost Software License, Version 1.0. (See accompanying
 150         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>)
 151       </p>
 152 </div></td>
 153 </tr></table>
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