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| <a name="boost.log.attribute.impl"></a><div class="titlepage"></div> |
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| <h2><span class="refentrytitle">Struct impl</span></h2> |
| <p>boost::log::attribute::impl — A base class for an attribute value factory. </p> |
| </div> |
| <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> |
| <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="../../../attributes.html#header.boost.log.attributes.attribute_hpp" title="Header <boost/log/attributes/attribute.hpp>">boost/log/attributes/attribute.hpp</a>> |
| |
| </span> |
| |
| <span class="comment">// A base class for an attribute value factory.</span> |
| |
| <span class="keyword">struct</span> <a class="link" href="impl.html" title="Struct impl">impl</a> <span class="special">:</span> <span class="keyword">public</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">intrusive_ref_counter</span><span class="special"><</span> <span class="identifier">impl</span> <span class="special">></span> <span class="special">{</span> |
| <span class="comment">// <a class="link" href="impl.html#boost.log.attribute.implconstruct-copy-destruct">construct/copy/destruct</a></span> |
| <a class="link" href="impl.html#idp40323216-bb"><span class="special">~</span><span class="identifier">impl</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> |
| |
| <span class="comment">// <a class="link" href="impl.html#idp27715552-bb">public member functions</a></span> |
| <span class="keyword">virtual</span> <a class="link" href="../attribute_value.html" title="Class attribute_value">attribute_value</a> <a class="link" href="impl.html#idp27716112-bb"><span class="identifier">get_value</span></a><span class="special">(</span><span class="special">)</span> <span class="special">=</span> <span class="number">0</span><span class="special">;</span> |
| |
| <span class="comment">// <a class="link" href="impl.html#idp40323792-bb">public static functions</a></span> |
| <span class="keyword">static</span> <span class="keyword">void</span> <span class="special">*</span> <a class="link" href="impl.html#idp40324352-bb"><span class="keyword">operator</span> <span class="keyword">new</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span><span class="special">)</span><span class="special">;</span> |
| <span class="keyword">static</span> <span class="keyword">void</span> <a class="link" href="impl.html#idp40326160-bb"><span class="keyword">operator</span> <span class="keyword">delete</span></a><span class="special">(</span><span class="keyword">void</span> <span class="special">*</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span> |
| <span class="special">}</span><span class="special">;</span></pre></div> |
| <div class="refsect1"> |
| <a name="idp104222128"></a><h2>Description</h2> |
| <p>All attributes must derive their implementation from this class. </p> |
| <div class="refsect2"> |
| <a name="idp104222880"></a><h3> |
| <a name="boost.log.attribute.implconstruct-copy-destruct"></a><code class="computeroutput">impl</code> |
| public |
| construct/copy/destruct</h3> |
| <div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"> |
| <pre class="literallayout"><a name="idp40323216-bb"></a><span class="special">~</span><span class="identifier">impl</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>Virtual destructor. </li></ol></div> |
| </div> |
| <div class="refsect2"> |
| <a name="idp104229504"></a><h3> |
| <a name="idp27715552-bb"></a><code class="computeroutput">impl</code> public member functions</h3> |
| <div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"> |
| <pre class="literallayout"><span class="keyword">virtual</span> <a class="link" href="../attribute_value.html" title="Class attribute_value">attribute_value</a> <a name="idp27716112-bb"></a><span class="identifier">get_value</span><span class="special">(</span><span class="special">)</span> <span class="special">=</span> <span class="number">0</span><span class="special">;</span></pre> |
| <p> |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist compact"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody><tr> |
| <td><p><span class="term">Returns:</span></p></td> |
| <td><p>The actual attribute value. It shall not return empty values (exceptions shall be used to indicate errors). </p></td> |
| </tr></tbody> |
| </table></div> |
| </li></ol></div> |
| </div> |
| <div class="refsect2"> |
| <a name="idp104240064"></a><h3> |
| <a name="idp40323792-bb"></a><code class="computeroutput">impl</code> public static functions</h3> |
| <div class="orderedlist"><ol class="orderedlist" type="1"> |
| <li class="listitem"><pre class="literallayout"><span class="keyword">static</span> <span class="keyword">void</span> <span class="special">*</span> <a name="idp40324352-bb"></a><span class="keyword">operator</span> <span class="keyword">new</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> size<span class="special">)</span><span class="special">;</span></pre></li> |
| <li class="listitem"><pre class="literallayout"><span class="keyword">static</span> <span class="keyword">void</span> <a name="idp40326160-bb"></a><span class="keyword">operator</span> <span class="keyword">delete</span><span class="special">(</span><span class="keyword">void</span> <span class="special">*</span> p<span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> size<span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span></pre></li> |
| </ol></div> |
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| <td align="left"></td> |
| <td align="right"><div class="copyright-footer">Copyright © 2007-2015 Andrey |
| Semashev<p> |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| 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>). |
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