1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<html> 3<head> 4<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 5<title>Class postconstructor_invoker</title> 6<link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css"> 7<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 8<link rel="home" href="../../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> 9<link rel="up" href="../../signals2/reference.html#header.boost.signals2.deconstruct_hpp" title="Header <boost/signals2/deconstruct.hpp>"> 10<link rel="prev" href="deconstruct_access.html" title="Class deconstruct_access"> 11<link rel="next" href="dummy_mutex.html" title="Class dummy_mutex"> 12</head> 13<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 14<table cellpadding="2" width="100%"><tr> 15<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" 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name="boost.signals2.postconstructor_invoker"></a><div class="titlepage"></div> 28<div class="refnamediv"> 29<h2><span class="refentrytitle">Class postconstructor_invoker</span></h2> 30<p>boost::signals2::postconstructor_invoker — Pass arguments to and run postconstructors for objects created with <a class="link" href="deconstruct.html" title="Function deconstruct">deconstruct()</a>.</p> 31</div> 32<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> 33<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="../../signals2/reference.html#header.boost.signals2.deconstruct_hpp" title="Header <boost/signals2/deconstruct.hpp>">boost/signals2/deconstruct.hpp</a>> 34 35</span> 36<span class="keyword">class</span> <a class="link" href="postconstructor_invoker.html" title="Class postconstructor_invoker">postconstructor_invoker</a> <span class="special">{</span> 37<span class="keyword">public</span><span class="special">:</span> 38 39 <span class="comment">// <a class="link" href="postconstructor_invoker.html#id-1_3_36_6_3_3_1_3_1-bb">public methods</a></span> 40 <a class="link" href="postconstructor_invoker.html#id-1_3_36_6_3_3_1_3_1_1-bb"><span class="keyword">operator</span> <span class="keyword">const</span> <span class="identifier">shared_ptr</span><span class="special"><</span><span class="identifier">T</span><span class="special">></span> <span class="special">&</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> 41 <span class="keyword">const</span> <span class="identifier">shared_ptr</span><span class="special"><</span><span class="identifier">T</span><span class="special">></span> <span class="special">&</span> <a class="link" href="postconstructor_invoker.html#id-1_3_36_6_3_3_1_3_1_2_1-bb"><span class="identifier">postconstruct</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> 42 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> A1<span class="special">></span> <span class="keyword">const</span> <span class="identifier">shared_ptr</span><span class="special"><</span><span class="identifier">T</span><span class="special">></span> <span class="special">&</span> <a class="link" href="postconstructor_invoker.html#id-1_3_36_6_3_3_1_3_1_2_2-bb"><span class="identifier">postconstruct</span></a><span class="special">(</span><span class="identifier">A1</span><span class="special">)</span><span class="special">;</span> 43 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> A1<span class="special">,</span> <span class="keyword">typename</span> A2<span class="special">></span> 44 <span class="keyword">const</span> <span class="identifier">shared_ptr</span><span class="special"><</span><span class="identifier">T</span><span class="special">></span> <span class="special">&</span> <a class="link" href="postconstructor_invoker.html#id-1_3_36_6_3_3_1_3_1_2_3-bb"><span class="identifier">postconstruct</span></a><span class="special">(</span><span class="identifier">A1</span><span class="special">,</span> <span class="identifier">A1</span><span class="special">)</span><span class="special">;</span> 45 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> A1<span class="special">,</span> <span class="keyword">typename</span> A2, ...<span class="special">,</span> <span class="keyword">typename</span> AN<span class="special">></span> 46 <span class="keyword">const</span> <span class="identifier">shared_ptr</span><span class="special"><</span><span class="identifier">T</span><span class="special">></span> <span class="special">&</span> <a class="link" href="postconstructor_invoker.html#id-1_3_36_6_3_3_1_3_1_2_4-bb"><span class="identifier">postconstruct</span></a><span class="special">(</span><span class="identifier">A1</span><span class="special">,</span> <span class="identifier">A1</span><span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="identifier">A1</span><span class="special">)</span><span class="special">;</span> 47<span class="special">}</span><span class="special">;</span></pre></div> 48<div class="refsect1"> 49<a name="id-1.3.36.6.4.5.4"></a><h2>Description</h2> 50<p> 51 Objects of type <code class="computeroutput">postconstructor_invoker</code> are returned by calls to the 52 <a class="link" href="deconstruct.html" title="Function deconstruct">deconstruct()</a> factory function. These objects are intended 53 to either be immediately assigned to a shared_ptr (in which case the 54 class' conversion operator will perform the conversion by calling the 55 <a class="link" href="postconstructor_invoker.html#id-1_3_36_6_3_3_1_3_1_2-bb">postconstruct</a> with no arguments), or to be converted 56 to shared_ptr explicitly by the user calling one of 57 the <a class="link" href="postconstructor_invoker.html#id-1_3_36_6_3_3_1_3_1_2-bb">postconstruct</a> methods. 58 </p> 59<div class="refsect2"> 60<a name="id-1.3.36.6.4.5.4.3"></a><h3> 61<a name="id-1_3_36_6_3_3_1_3_1-bb"></a><code class="computeroutput">postconstructor_invoker</code> public methods</h3> 62<div class="orderedlist"><ol class="orderedlist" type="1"> 63<li class="listitem"> 64<pre class="literallayout"><a name="id-1_3_36_6_3_3_1_3_1_1-bb"></a><span class="keyword">operator</span> <span class="keyword">const</span> <span class="identifier">shared_ptr</span><span class="special"><</span><span class="identifier">T</span><span class="special">></span> <span class="special">&</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre> 65<p> 66 The conversion operator has the same effect as explicitly calling 67 the <code class="computeroutput"><a class="link" href="postconstructor_invoker.html#id-1_3_36_6_3_3_1_3_1_2-bb">postconstruct</a></code> method with no arguments. 68 </p> 69</li> 70<li class="listitem"> 71<pre class="literallayout"><a name="id-1_3_36_6_3_3_1_3_1_2-bb"></a><span class="keyword">const</span> <span class="identifier">shared_ptr</span><span class="special"><</span><span class="identifier">T</span><span class="special">></span> <span class="special">&</span> <a name="id-1_3_36_6_3_3_1_3_1_2_1-bb"></a><span class="identifier">postconstruct</span><span class="special">(</span><span class="special">)</span><span class="special">;</span> 72<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> A1<span class="special">></span> <span class="keyword">const</span> <span class="identifier">shared_ptr</span><span class="special"><</span><span class="identifier">T</span><span class="special">></span> <span class="special">&</span> <a name="id-1_3_36_6_3_3_1_3_1_2_2-bb"></a><span class="identifier">postconstruct</span><span class="special">(</span><span class="identifier">A1</span> a1<span class="special">)</span><span class="special">;</span> 73<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> A1<span class="special">,</span> <span class="keyword">typename</span> A2<span class="special">></span> 74 <span class="keyword">const</span> <span class="identifier">shared_ptr</span><span class="special"><</span><span class="identifier">T</span><span class="special">></span> <span class="special">&</span> <a name="id-1_3_36_6_3_3_1_3_1_2_3-bb"></a><span class="identifier">postconstruct</span><span class="special">(</span><span class="identifier">A1</span> a1<span class="special">,</span> <span class="identifier">A1</span> a2<span class="special">)</span><span class="special">;</span> 75<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> A1<span class="special">,</span> <span class="keyword">typename</span> A2, ...<span class="special">,</span> <span class="keyword">typename</span> AN<span class="special">></span> 76 <span class="keyword">const</span> <span class="identifier">shared_ptr</span><span class="special"><</span><span class="identifier">T</span><span class="special">></span> <span class="special">&</span> <a name="id-1_3_36_6_3_3_1_3_1_2_4-bb"></a><span class="identifier">postconstruct</span><span class="special">(</span><span class="identifier">A1</span> a1<span class="special">,</span> <span class="identifier">A1</span> a2<span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="identifier">A1</span> aN<span class="special">)</span><span class="special">;</span></pre> 77<p> 78 The <code class="computeroutput">postconstruct</code> methods make an unqualified call to 79 <code class="computeroutput">adl_postconstruct()</code> and then return the <code class="computeroutput">shared_ptr</code> 80 which was wrapped inside the <code class="computeroutput">postconstructor_invoker</code> 81 object by <code class="computeroutput"><a class="link" href="deconstruct.html" title="Function deconstruct">deconstruct()</a></code>. 82 The first two arguments passed to the 83 <code class="computeroutput">adl_postconstruct()</code> call are always the <code class="computeroutput">shared_ptr</code> 84 owning the object created by <code class="computeroutput"><a class="link" href="deconstruct.html" title="Function deconstruct">deconstruct()</a></code>, 85 followed by a ordinary pointer to the same object. As a convenience, 86 the ordinary pointer 87 will always be cast to point to a non-const type before being passed 88 to <code class="computeroutput">adl_postconstruct</code>. The remaining arguments passed to 89 <code class="computeroutput">adl_postconstruct</code> are whatever arguments the user may have 90 passed to the <code class="computeroutput">postconstruct</code> 91 method. 92 </p> 93</li> 94</ol></div> 95</div> 96</div> 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 © 2001-2004 Douglas Gregor<br>Copyright © 2007-2009 Frank Mori Hess<p>Distributed under the Boost 101 Software License, Version 1.0. (See accompanying file 102 <code class="filename">LICENSE_1_0.txt</code> or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)</p> 103</div></td> 104</tr></table> 105<hr> 106<div class="spirit-nav"> 107<a accesskey="p" href="deconstruct_access.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../signals2/reference.html#header.boost.signals2.deconstruct_hpp"><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="dummy_mutex.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 108</div> 109</body> 110</html> 111
