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  26 <div class="refentry">
  27 <a name="boost.dll.experimental.smart_library"></a><div class="titlepage"></div>
  28 <div class="refnamediv">
  29 <h2><span class="refentrytitle">Class smart_library</span></h2>
  30 <p>boost::dll::experimental::smart_library &#8212; This class is an extension of <a class="link" href="../shared_library.html" title="Class shared_library">shared_library</a>, which allows to load C++ symbols. </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: &lt;<a class="link" href="../../../boost_dll/reference.html#header.boost.dll.smart_library_hpp" title="Header &lt;boost/dll/smart_library.hpp&gt;">boost/dll/smart_library.hpp</a>&gt;
  34
  35 </span>
  36 <span class="keyword">class</span> <a class="link" href="smart_library.html" title="Class smart_library">smart_library</a> <span class="special">{</span>
  37 <span class="keyword">public</span><span class="special">:</span>
  38   <span class="comment">// types</span>
  39   <span class="keyword">typedef</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <a name="boost.dll.experimental.smart_library.mangled_storage"></a><span class="identifier">mangled_storage</span><span class="special">;</span>
  40
  41   <span class="comment">// <a class="link" href="smart_library.html#boost.dll.experimental.smart_libraryconstruct-copy-destruct">construct/copy/destruct</a></span>
  42   <a class="link" href="smart_library.html#idm46262974423584-bb"><span class="identifier">smart_library</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span>
  43   <a class="link" href="smart_library.html#idm46262974420976-bb"><span class="identifier">smart_library</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">dll</span><span class="special">::</span><span class="identifier">fs</span><span class="special">::</span><span class="identifier">path</span> <span class="special">&amp;</span><span class="special">,</span>
  44                 <span class="identifier">load_mode</span><span class="special">::</span><span class="identifier">type</span> <span class="special">=</span> <span class="identifier">load_mode</span><span class="special">::</span><span class="identifier">default_mode</span><span class="special">)</span><span class="special">;</span>
  45   <a class="link" href="smart_library.html#idm46262974416048-bb"><span class="identifier">smart_library</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">dll</span><span class="special">::</span><span class="identifier">fs</span><span class="special">::</span><span class="identifier">path</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">dll</span><span class="special">::</span><span class="identifier">fs</span><span class="special">::</span><span class="identifier">error_code</span> <span class="special">&amp;</span><span class="special">,</span>
  46                 <span class="identifier">load_mode</span><span class="special">::</span><span class="identifier">type</span> <span class="special">=</span> <span class="identifier">load_mode</span><span class="special">::</span><span class="identifier">default_mode</span><span class="special">)</span><span class="special">;</span>
  47   <a class="link" href="smart_library.html#idm46262974409776-bb"><span class="identifier">smart_library</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">dll</span><span class="special">::</span><span class="identifier">fs</span><span class="special">::</span><span class="identifier">path</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">load_mode</span><span class="special">::</span><span class="identifier">type</span><span class="special">,</span>
  48                 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">dll</span><span class="special">::</span><span class="identifier">fs</span><span class="special">::</span><span class="identifier">error_code</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  49   <a class="link" href="smart_library.html#idm46262974406848-bb"><span class="identifier">smart_library</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="smart_library.html" title="Class smart_library">smart_library</a> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span>
  50   <a class="link" href="smart_library.html#idm46262974401856-bb"><span class="identifier">smart_library</span></a><span class="special">(</span><a class="link" href="smart_library.html" title="Class smart_library">smart_library</a> <span class="special">&amp;&amp;</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span>
  51   <span class="keyword">explicit</span> <a class="link" href="smart_library.html#idm46262974397024-bb"><span class="identifier">smart_library</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="../shared_library.html" title="Class shared_library">shared_library</a> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span>
  52   <span class="keyword">explicit</span> <a class="link" href="smart_library.html#idm46262974391760-bb"><span class="identifier">smart_library</span></a><span class="special">(</span><a class="link" href="../shared_library.html" title="Class shared_library">shared_library</a> <span class="special">&amp;&amp;</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span>
  53   <a class="link" href="smart_library.html#idm46262974386656-bb"><span class="special">~</span><span class="identifier">smart_library</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  54
  55   <span class="comment">// <a class="link" href="smart_library.html#idm46262974522544-bb">public member functions</a></span>
  56   <span class="keyword">const</span> <a class="link" href="../shared_library.html" title="Class shared_library">shared_library</a> <span class="special">&amp;</span> <a class="link" href="smart_library.html#idm46262974521984-bb"><span class="identifier">shared_lib</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  57   <span class="keyword">const</span> <span class="identifier">mangled_storage</span> <span class="special">&amp;</span> <a class="link" href="smart_library.html#idm46262974519264-bb"><span class="identifier">symbol_storage</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  58   <span class="identifier">mangled_storage</span> <span class="special">&amp;</span> <a class="link" href="smart_library.html#idm46262974516688-bb"><span class="identifier">symbol_storage</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  59   <span class="keyword">void</span> <a class="link" href="smart_library.html#idm46262974515536-bb"><span class="identifier">load</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">dll</span><span class="special">::</span><span class="identifier">fs</span><span class="special">::</span><span class="identifier">path</span> <span class="special">&amp;</span><span class="special">,</span>
  60             <span class="identifier">load_mode</span><span class="special">::</span><span class="identifier">type</span> <span class="special">=</span> <span class="identifier">load_mode</span><span class="special">::</span><span class="identifier">default_mode</span><span class="special">)</span><span class="special">;</span>
  61   <span class="keyword">void</span> <a class="link" href="smart_library.html#idm46262974509648-bb"><span class="identifier">load</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">dll</span><span class="special">::</span><span class="identifier">fs</span><span class="special">::</span><span class="identifier">path</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">dll</span><span class="special">::</span><span class="identifier">fs</span><span class="special">::</span><span class="identifier">error_code</span> <span class="special">&amp;</span><span class="special">,</span>
  62             <span class="identifier">load_mode</span><span class="special">::</span><span class="identifier">type</span> <span class="special">=</span> <span class="identifier">load_mode</span><span class="special">::</span><span class="identifier">default_mode</span><span class="special">)</span><span class="special">;</span>
  63   <span class="keyword">void</span> <a class="link" href="smart_library.html#idm46262974502416-bb"><span class="identifier">load</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">dll</span><span class="special">::</span><span class="identifier">fs</span><span class="special">::</span><span class="identifier">path</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">load_mode</span><span class="special">::</span><span class="identifier">type</span><span class="special">,</span>
  64             <span class="identifier">boost</span><span class="special">::</span><span class="identifier">dll</span><span class="special">::</span><span class="identifier">fs</span><span class="special">::</span><span class="identifier">error_code</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  65   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T<span class="special">&gt;</span> <span class="identifier">T</span> <span class="special">&amp;</span> <a class="link" href="smart_library.html#idm46262974498928-bb"><span class="identifier">get_variable</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  66   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Func<span class="special">&gt;</span> <span class="identifier">Func</span> <span class="special">&amp;</span> <a class="link" href="smart_library.html#idm46262974492576-bb"><span class="identifier">get_function</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  67   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Class<span class="special">,</span> <span class="keyword">typename</span> Func<span class="special">&gt;</span>
  68     <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <a class="link" href="smart_library.html#idm46262974484768-bb"><span class="identifier">get_mem_fn</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  69   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Signature<span class="special">&gt;</span>
  70     <span class="identifier">constructor</span><span class="special">&lt;</span> <span class="identifier">Signature</span> <span class="special">&gt;</span> <a class="link" href="smart_library.html#idm46262974475616-bb"><span class="identifier">get_constructor</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  71   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Class<span class="special">&gt;</span> <span class="identifier">destructor</span><span class="special">&lt;</span> <span class="identifier">Class</span> <span class="special">&gt;</span> <a class="link" href="smart_library.html#idm46262974469568-bb"><span class="identifier">get_destructor</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  72   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Class<span class="special">&gt;</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">type_info</span> <span class="special">&amp;</span> <a class="link" href="smart_library.html#idm46262974463616-bb"><span class="identifier">get_type_info</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  73   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Alias<span class="special">&gt;</span> <span class="keyword">void</span> <a class="link" href="smart_library.html#idm46262974457680-bb"><span class="identifier">add_type_alias</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  74   <span class="keyword">void</span> <a class="link" href="smart_library.html#idm46262974451056-bb"><span class="identifier">unload</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span>
  75   <span class="keyword">bool</span> <a class="link" href="smart_library.html#idm46262974447760-bb"><span class="identifier">is_loaded</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  76   <span class="keyword">bool</span> <a class="link" href="smart_library.html#idm46262974444624-bb"><span class="keyword">operator</span><span class="special">!</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  77   <span class="keyword">explicit</span> <a class="link" href="smart_library.html#idm46262974441488-bb"><span class="keyword">operator</span> <span class="keyword">bool</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  78   <span class="keyword">bool</span> <a class="link" href="smart_library.html#idm46262974439392-bb"><span class="identifier">has</span></a><span class="special">(</span><span class="keyword">const</span> <span class="keyword">char</span> <span class="special">*</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  79   <span class="keyword">bool</span> <a class="link" href="smart_library.html#idm46262974434704-bb"><span class="identifier">has</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  80   <a class="link" href="smart_library.html" title="Class smart_library">smart_library</a> <span class="special">&amp;</span> <a class="link" href="smart_library.html#idm46262974432352-bb"><span class="identifier">assign</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="smart_library.html" title="Class smart_library">smart_library</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  81   <span class="keyword">void</span> <a class="link" href="smart_library.html#idm46262974427744-bb"><span class="identifier">swap</span></a><span class="special">(</span><a class="link" href="smart_library.html" title="Class smart_library">smart_library</a> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span>
  82 <span class="special">}</span><span class="special">;</span></pre></div>
  83 <div class="refsect1">
  84 <a name="id-1.3.15.8.2.8.5.4"></a><h2>Description</h2>
  85 <p>This class allows type safe loading of overloaded functions, member-functions, constructors and variables. It also allows to overwrite classes so they can be loaded, while being declared with different names.</p>
  86 <div class="warning"><table border="0" summary="Warning">
  87 <tr>
  88 <td rowspan="2" align="center" valign="top" width="25"><img alt="[Warning]" src="../../../../../doc/src/images/warning.png"></td>
  89 <th align="left">Warning</th>
  90 </tr>
  91 <tr><td align="left" valign="top"><p>Is still very experimental.</p></td></tr>
  92 </table></div>
  93 <p>
  94 Currently known limitations:</p>
  95 <p>Member functions must be defined outside of the class to be exported. That is: </p>
  96 <pre class="programlisting"><span class="comment">//not exported:</span>
  97 <span class="keyword">struct</span> <span class="identifier">BOOST_SYMBOL_EXPORT</span> <span class="identifier">my_class</span> <span class="special">{</span> <span class="keyword">void</span> <span class="identifier">func</span><span class="special">(</span><span class="special">)</span> <span class="special">{</span><span class="special">}</span><span class="special">}</span><span class="special">;</span>
  98 <span class="comment">//exported</span>
  99 <span class="keyword">struct</span> <span class="identifier">BOOST_SYMBOL_EXPORT</span> <span class="identifier">my_class</span> <span class="special">{</span> <span class="keyword">void</span> <span class="identifier">func</span><span class="special">(</span><span class="special">)</span><span class="special">;</span><span class="special">}</span><span class="special">;</span>
 100 <span class="keyword">void</span> <span class="identifier">my_class</span><span class="special">::</span><span class="identifier">func</span><span class="special">(</span><span class="special">)</span> <span class="special">{</span><span class="special">}</span><span class="special">;</span>
 101 </pre>
 102 <p>With the current analysis, the first version does get exported in MSVC. MinGW also does export it, BOOST_SYMBOL_EXPORT is written before it. To allow this on windows one can use BOOST_DLL_MEMBER_EXPORT for this, so that MinGW and MSVC can provide those functions. This does however not work with gcc on linux.</p>
 103 <p>Direct initialization of members. On linux the following member variable i will not be initialized when using the allocating constructor: </p>
 104 <pre class="programlisting"><span class="keyword">struct</span> <span class="identifier">BOOST_SYMBOL_EXPORT</span> <span class="identifier">my_class</span> <span class="special">{</span> <span class="keyword">int</span> <span class="identifier">i</span><span class="special">;</span> <span class="identifier">my_class</span><span class="special">(</span><span class="special">)</span> <span class="special">:</span> <span class="identifier">i</span><span class="special">(</span><span class="number">42</span><span class="special">)</span> <span class="special">{</span><span class="special">}</span> <span class="special">}</span><span class="special">;</span>
 105 </pre>
 106 <p>This does however not happen when the value is set inside the constructor function. </p>
 107 <div class="refsect2">
 108 <a name="id-1.3.15.8.2.8.5.4.8"></a><h3>
 109 <a name="boost.dll.experimental.smart_libraryconstruct-copy-destruct"></a><code class="computeroutput">smart_library</code>
 110         public
 111        construct/copy/destruct</h3>
 112 <div class="orderedlist"><ol class="orderedlist" type="1">
 113 <li class="listitem">
 114 <pre class="literallayout"><a name="idm46262974423584-bb"></a><span class="identifier">smart_library</span><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
 115 <p>Creates in anstance that does not reference any DLL/DSO.</p>
 116 <p>
 117
 118 </p>
 119 <div class="variablelist"><table border="0" class="variablelist compact">
 120 <colgroup>
 121 <col align="left" valign="top">
 122 <col>
 123 </colgroup>
 124 <tbody>
 125 <tr>
 126 <td><p><span class="term">Postconditions:</span></p></td>
 127 <td><p>this-&gt;is_loaded() returns false. </p></td>
 128 </tr>
 129 <tr>
 130 <td><p><span class="term">Throws:</span></p></td>
 131 <td>Nothing. </td>
 132 </tr>
 133 </tbody>
 134 </table></div>
 135 </li>
 136 <li class="listitem">
 137 <pre class="literallayout"><a name="idm46262974420976-bb"></a><span class="identifier">smart_library</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">dll</span><span class="special">::</span><span class="identifier">fs</span><span class="special">::</span><span class="identifier">path</span> <span class="special">&amp;</span> lib_path<span class="special">,</span>
 138               <span class="identifier">load_mode</span><span class="special">::</span><span class="identifier">type</span> mode <span class="special">=</span> <span class="identifier">load_mode</span><span class="special">::</span><span class="identifier">default_mode</span><span class="special">)</span><span class="special">;</span></pre>
 139 <p>Loads a library by specified path with a specified mode.</p>
 140 <p>
 141
 142 </p>
 143 <div class="variablelist"><table border="0" class="variablelist compact">
 144 <colgroup>
 145 <col align="left" valign="top">
 146 <col>
 147 </colgroup>
 148 <tbody>
 149 <tr>
 150 <td><p><span class="term">Parameters:</span></p></td>
 151 <td><div class="variablelist"><table border="0" class="variablelist compact">
 152 <colgroup>
 153 <col align="left" valign="top">
 154 <col>
 155 </colgroup>
 156 <tbody>
 157 <tr>
 158 <td><p><span class="term"><code class="computeroutput">lib_path</code></span></p></td>
 159 <td><p>Library file name. Can handle std::string, const char*, std::wstring, const wchar_t* or <a class="link" href="../fs/path.html" title="Type definition path">boost::dll::fs::path</a>. </p></td>
 160 </tr>
 161 <tr>
 162 <td><p><span class="term"><code class="computeroutput">mode</code></span></p></td>
 163 <td><p>A mode that will be used on library load. </p></td>
 164 </tr>
 165 </tbody>
 166 </table></div></td>
 167 </tr>
 168 <tr>
 169 <td><p><span class="term">Throws:</span></p></td>
 170 <td> </td>
 171 </tr>
 172 </tbody>
 173 </table></div>
 174 </li>
 175 <li class="listitem">
 176 <pre class="literallayout"><a name="idm46262974416048-bb"></a><span class="identifier">smart_library</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">dll</span><span class="special">::</span><span class="identifier">fs</span><span class="special">::</span><span class="identifier">path</span> <span class="special">&amp;</span> lib_path<span class="special">,</span>
 177               <span class="identifier">boost</span><span class="special">::</span><span class="identifier">dll</span><span class="special">::</span><span class="identifier">fs</span><span class="special">::</span><span class="identifier">error_code</span> <span class="special">&amp;</span> ec<span class="special">,</span>
 178               <span class="identifier">load_mode</span><span class="special">::</span><span class="identifier">type</span> mode <span class="special">=</span> <span class="identifier">load_mode</span><span class="special">::</span><span class="identifier">default_mode</span><span class="special">)</span><span class="special">;</span></pre>
 179 <p>Loads a library by specified path with a specified mode.</p>
 180 <p>
 181
 182 </p>
 183 <div class="variablelist"><table border="0" class="variablelist compact">
 184 <colgroup>
 185 <col align="left" valign="top">
 186 <col>
 187 </colgroup>
 188 <tbody>
 189 <tr>
 190 <td><p><span class="term">Parameters:</span></p></td>
 191 <td><div class="variablelist"><table border="0" class="variablelist compact">
 192 <colgroup>
 193 <col align="left" valign="top">
 194 <col>
 195 </colgroup>
 196 <tbody>
 197 <tr>
 198 <td><p><span class="term"><code class="computeroutput">ec</code></span></p></td>
 199 <td><p>Variable that will be set to the result of the operation. </p></td>
 200 </tr>
 201 <tr>
 202 <td><p><span class="term"><code class="computeroutput">lib_path</code></span></p></td>
 203 <td><p>Library file name. Can handle std::string, const char*, std::wstring, const wchar_t* or <a class="link" href="../fs/path.html" title="Type definition path">boost::dll::fs::path</a>. </p></td>
 204 </tr>
 205 <tr>
 206 <td><p><span class="term"><code class="computeroutput">mode</code></span></p></td>
 207 <td><p>A mode that will be used on library load. </p></td>
 208 </tr>
 209 </tbody>
 210 </table></div></td>
 211 </tr>
 212 <tr>
 213 <td><p><span class="term">Throws:</span></p></td>
 214 <td>std::bad_alloc in case of insufficient memory. </td>
 215 </tr>
 216 </tbody>
 217 </table></div>
 218 </li>
 219 <li class="listitem">
 220 <pre class="literallayout"><a name="idm46262974409776-bb"></a><span class="identifier">smart_library</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">dll</span><span class="special">::</span><span class="identifier">fs</span><span class="special">::</span><span class="identifier">path</span> <span class="special">&amp;</span> lib_path<span class="special">,</span> <span class="identifier">load_mode</span><span class="special">::</span><span class="identifier">type</span> mode<span class="special">,</span>
 221               <span class="identifier">boost</span><span class="special">::</span><span class="identifier">dll</span><span class="special">::</span><span class="identifier">fs</span><span class="special">::</span><span class="identifier">error_code</span> <span class="special">&amp;</span> ec<span class="special">)</span><span class="special">;</span></pre>
 222 <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p>
 223 </li>
 224 <li class="listitem">
 225 <pre class="literallayout"><a name="idm46262974406848-bb"></a><span class="identifier">smart_library</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="smart_library.html" title="Class smart_library">smart_library</a> <span class="special">&amp;</span> lib<span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
 226 <p>copy a <code class="computeroutput"><a class="link" href="smart_library.html" title="Class smart_library">smart_library</a></code> object.</p>
 227 <p>
 228
 229 </p>
 230 <div class="variablelist"><table border="0" class="variablelist compact">
 231 <colgroup>
 232 <col align="left" valign="top">
 233 <col>
 234 </colgroup>
 235 <tbody>
 236 <tr>
 237 <td><p><span class="term">Parameters:</span></p></td>
 238 <td><div class="variablelist"><table border="0" class="variablelist compact">
 239 <colgroup>
 240 <col align="left" valign="top">
 241 <col>
 242 </colgroup>
 243 <tbody><tr>
 244 <td><p><span class="term"><code class="computeroutput">lib</code></span></p></td>
 245 <td><p>A <code class="computeroutput"><a class="link" href="smart_library.html" title="Class smart_library">smart_library</a></code> to move from.</p></td>
 246 </tr></tbody>
 247 </table></div></td>
 248 </tr>
 249 <tr>
 250 <td><p><span class="term">Throws:</span></p></td>
 251 <td>Nothing. </td>
 252 </tr>
 253 </tbody>
 254 </table></div>
 255 </li>
 256 <li class="listitem">
 257 <pre class="literallayout"><a name="idm46262974401856-bb"></a><span class="identifier">smart_library</span><span class="special">(</span><a class="link" href="smart_library.html" title="Class smart_library">smart_library</a> <span class="special">&amp;&amp;</span> lib<span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
 258 <p>Move a <code class="computeroutput"><a class="link" href="smart_library.html" title="Class smart_library">smart_library</a></code> object.</p>
 259 <p>
 260
 261 </p>
 262 <div class="variablelist"><table border="0" class="variablelist compact">
 263 <colgroup>
 264 <col align="left" valign="top">
 265 <col>
 266 </colgroup>
 267 <tbody>
 268 <tr>
 269 <td><p><span class="term">Parameters:</span></p></td>
 270 <td><div class="variablelist"><table border="0" class="variablelist compact">
 271 <colgroup>
 272 <col align="left" valign="top">
 273 <col>
 274 </colgroup>
 275 <tbody><tr>
 276 <td><p><span class="term"><code class="computeroutput">lib</code></span></p></td>
 277 <td><p>A <code class="computeroutput"><a class="link" href="smart_library.html" title="Class smart_library">smart_library</a></code> to move from.</p></td>
 278 </tr></tbody>
 279 </table></div></td>
 280 </tr>
 281 <tr>
 282 <td><p><span class="term">Throws:</span></p></td>
 283 <td>Nothing. </td>
 284 </tr>
 285 </tbody>
 286 </table></div>
 287 </li>
 288 <li class="listitem">
 289 <pre class="literallayout"><span class="keyword">explicit</span> <a name="idm46262974397024-bb"></a><span class="identifier">smart_library</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="../shared_library.html" title="Class shared_library">shared_library</a> <span class="special">&amp;</span> lib<span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
 290 <p>Construct from a <code class="computeroutput"><a class="link" href="../shared_library.html" title="Class shared_library">shared_library</a></code> object.</p>
 291 <p>
 292
 293 </p>
 294 <div class="variablelist"><table border="0" class="variablelist compact">
 295 <colgroup>
 296 <col align="left" valign="top">
 297 <col>
 298 </colgroup>
 299 <tbody>
 300 <tr>
 301 <td><p><span class="term">Parameters:</span></p></td>
 302 <td><div class="variablelist"><table border="0" class="variablelist compact">
 303 <colgroup>
 304 <col align="left" valign="top">
 305 <col>
 306 </colgroup>
 307 <tbody><tr>
 308 <td><p><span class="term"><code class="computeroutput">lib</code></span></p></td>
 309 <td><p>A <code class="computeroutput"><a class="link" href="../shared_library.html" title="Class shared_library">shared_library</a></code> to move from.</p></td>
 310 </tr></tbody>
 311 </table></div></td>
 312 </tr>
 313 <tr>
 314 <td><p><span class="term">Throws:</span></p></td>
 315 <td>Nothing. </td>
 316 </tr>
 317 </tbody>
 318 </table></div>
 319 </li>
 320 <li class="listitem">
 321 <pre class="literallayout"><span class="keyword">explicit</span> <a name="idm46262974391760-bb"></a><span class="identifier">smart_library</span><span class="special">(</span><a class="link" href="../shared_library.html" title="Class shared_library">shared_library</a> <span class="special">&amp;&amp;</span> lib<span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
 322 <p>Construct from a <code class="computeroutput"><a class="link" href="../shared_library.html" title="Class shared_library">shared_library</a></code> object.</p>
 323 <p>
 324
 325 </p>
 326 <div class="variablelist"><table border="0" class="variablelist compact">
 327 <colgroup>
 328 <col align="left" valign="top">
 329 <col>
 330 </colgroup>
 331 <tbody>
 332 <tr>
 333 <td><p><span class="term">Parameters:</span></p></td>
 334 <td><div class="variablelist"><table border="0" class="variablelist compact">
 335 <colgroup>
 336 <col align="left" valign="top">
 337 <col>
 338 </colgroup>
 339 <tbody><tr>
 340 <td><p><span class="term"><code class="computeroutput">lib</code></span></p></td>
 341 <td><p>A <code class="computeroutput"><a class="link" href="../shared_library.html" title="Class shared_library">shared_library</a></code> to move from.</p></td>
 342 </tr></tbody>
 343 </table></div></td>
 344 </tr>
 345 <tr>
 346 <td><p><span class="term">Throws:</span></p></td>
 347 <td>Nothing. </td>
 348 </tr>
 349 </tbody>
 350 </table></div>
 351 </li>
 352 <li class="listitem">
 353 <pre class="literallayout"><a name="idm46262974386656-bb"></a><span class="special">~</span><span class="identifier">smart_library</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
 354 <p>Destroys the <code class="computeroutput"><a class="link" href="smart_library.html" title="Class smart_library">smart_library</a></code>. <code class="computeroutput">unload()</code> is called if the DLL/DSO was loaded. If library was loaded multiple times by different instances of <code class="computeroutput"><a class="link" href="../shared_library.html" title="Class shared_library">shared_library</a></code>, the actual DLL/DSO won't be unloaded until there is at least one instance of <code class="computeroutput"><a class="link" href="../shared_library.html" title="Class shared_library">shared_library</a></code>.</p>
 355 <p>
 356 </p>
 357 <div class="variablelist"><table border="0" class="variablelist compact">
 358 <colgroup>
 359 <col align="left" valign="top">
 360 <col>
 361 </colgroup>
 362 <tbody><tr>
 363 <td><p><span class="term">Throws:</span></p></td>
 364 <td>Nothing. </td>
 365 </tr></tbody>
 366 </table></div>
 367 </li>
 368 </ol></div>
 369 </div>
 370 <div class="refsect2">
 371 <a name="id-1.3.15.8.2.8.5.4.9"></a><h3>
 372 <a name="idm46262974522544-bb"></a><code class="computeroutput">smart_library</code> public member functions</h3>
 373 <div class="orderedlist"><ol class="orderedlist" type="1">
 374 <li class="listitem">
 375 <pre class="literallayout"><span class="keyword">const</span> <a class="link" href="../shared_library.html" title="Class shared_library">shared_library</a> <span class="special">&amp;</span> <a name="idm46262974521984-bb"></a><span class="identifier">shared_lib</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 376 <p>Get the underlying <code class="computeroutput"><a class="link" href="../shared_library.html" title="Class shared_library">shared_library</a></code> </p>
 377 </li>
 378 <li class="listitem">
 379 <pre class="literallayout"><span class="keyword">const</span> <span class="identifier">mangled_storage</span> <span class="special">&amp;</span> <a name="idm46262974519264-bb"></a><span class="identifier">symbol_storage</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 380 <p>Access to the mangled storage, which is created on construction.</p>
 381 <p>
 382 </p>
 383 <div class="variablelist"><table border="0" class="variablelist compact">
 384 <colgroup>
 385 <col align="left" valign="top">
 386 <col>
 387 </colgroup>
 388 <tbody><tr>
 389 <td><p><span class="term">Throws:</span></p></td>
 390 <td>Nothing. </td>
 391 </tr></tbody>
 392 </table></div>
 393 </li>
 394 <li class="listitem">
 395 <pre class="literallayout"><span class="identifier">mangled_storage</span> <span class="special">&amp;</span> <a name="idm46262974516688-bb"></a><span class="identifier">symbol_storage</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>Overload, for current development. </li>
 396 <li class="listitem">
 397 <pre class="literallayout"><span class="keyword">void</span> <a name="idm46262974515536-bb"></a><span class="identifier">load</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">dll</span><span class="special">::</span><span class="identifier">fs</span><span class="special">::</span><span class="identifier">path</span> <span class="special">&amp;</span> lib_path<span class="special">,</span>
 398           <span class="identifier">load_mode</span><span class="special">::</span><span class="identifier">type</span> mode <span class="special">=</span> <span class="identifier">load_mode</span><span class="special">::</span><span class="identifier">default_mode</span><span class="special">)</span><span class="special">;</span></pre>
 399 <p>Loads a library by specified path with a specified mode.</p>
 400 <p>Note that if some library is already loaded in this instance, load will call unload() and then load the new provided library.</p>
 401 <p>
 402
 403 </p>
 404 <div class="variablelist"><table border="0" class="variablelist compact">
 405 <colgroup>
 406 <col align="left" valign="top">
 407 <col>
 408 </colgroup>
 409 <tbody>
 410 <tr>
 411 <td><p><span class="term">Parameters:</span></p></td>
 412 <td><div class="variablelist"><table border="0" class="variablelist compact">
 413 <colgroup>
 414 <col align="left" valign="top">
 415 <col>
 416 </colgroup>
 417 <tbody>
 418 <tr>
 419 <td><p><span class="term"><code class="computeroutput">lib_path</code></span></p></td>
 420 <td><p>Library file name. Can handle std::string, const char*, std::wstring, const wchar_t* or <a class="link" href="../fs/path.html" title="Type definition path">boost::dll::fs::path</a>. </p></td>
 421 </tr>
 422 <tr>
 423 <td><p><span class="term"><code class="computeroutput">mode</code></span></p></td>
 424 <td><p>A mode that will be used on library load. </p></td>
 425 </tr>
 426 </tbody>
 427 </table></div></td>
 428 </tr>
 429 <tr>
 430 <td><p><span class="term">Throws:</span></p></td>
 431 <td> </td>
 432 </tr>
 433 </tbody>
 434 </table></div>
 435 </li>
 436 <li class="listitem">
 437 <pre class="literallayout"><span class="keyword">void</span> <a name="idm46262974509648-bb"></a><span class="identifier">load</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">dll</span><span class="special">::</span><span class="identifier">fs</span><span class="special">::</span><span class="identifier">path</span> <span class="special">&amp;</span> lib_path<span class="special">,</span>
 438           <span class="identifier">boost</span><span class="special">::</span><span class="identifier">dll</span><span class="special">::</span><span class="identifier">fs</span><span class="special">::</span><span class="identifier">error_code</span> <span class="special">&amp;</span> ec<span class="special">,</span>
 439           <span class="identifier">load_mode</span><span class="special">::</span><span class="identifier">type</span> mode <span class="special">=</span> <span class="identifier">load_mode</span><span class="special">::</span><span class="identifier">default_mode</span><span class="special">)</span><span class="special">;</span></pre>
 440 <p>Loads a library by specified path with a specified mode.</p>
 441 <p>Note that if some library is already loaded in this instance, load will call unload() and then load the new provided library.</p>
 442 <p>
 443
 444 </p>
 445 <div class="variablelist"><table border="0" class="variablelist compact">
 446 <colgroup>
 447 <col align="left" valign="top">
 448 <col>
 449 </colgroup>
 450 <tbody>
 451 <tr>
 452 <td><p><span class="term">Parameters:</span></p></td>
 453 <td><div class="variablelist"><table border="0" class="variablelist compact">
 454 <colgroup>
 455 <col align="left" valign="top">
 456 <col>
 457 </colgroup>
 458 <tbody>
 459 <tr>
 460 <td><p><span class="term"><code class="computeroutput">ec</code></span></p></td>
 461 <td><p>Variable that will be set to the result of the operation. </p></td>
 462 </tr>
 463 <tr>
 464 <td><p><span class="term"><code class="computeroutput">lib_path</code></span></p></td>
 465 <td><p>Library file name. Can handle std::string, const char*, std::wstring, const wchar_t* or <a class="link" href="../fs/path.html" title="Type definition path">boost::dll::fs::path</a>. </p></td>
 466 </tr>
 467 <tr>
 468 <td><p><span class="term"><code class="computeroutput">mode</code></span></p></td>
 469 <td><p>A mode that will be used on library load. </p></td>
 470 </tr>
 471 </tbody>
 472 </table></div></td>
 473 </tr>
 474 <tr>
 475 <td><p><span class="term">Throws:</span></p></td>
 476 <td>std::bad_alloc in case of insufficient memory. </td>
 477 </tr>
 478 </tbody>
 479 </table></div>
 480 </li>
 481 <li class="listitem">
 482 <pre class="literallayout"><span class="keyword">void</span> <a name="idm46262974502416-bb"></a><span class="identifier">load</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">dll</span><span class="special">::</span><span class="identifier">fs</span><span class="special">::</span><span class="identifier">path</span> <span class="special">&amp;</span> lib_path<span class="special">,</span> <span class="identifier">load_mode</span><span class="special">::</span><span class="identifier">type</span> mode<span class="special">,</span>
 483           <span class="identifier">boost</span><span class="special">::</span><span class="identifier">dll</span><span class="special">::</span><span class="identifier">fs</span><span class="special">::</span><span class="identifier">error_code</span> <span class="special">&amp;</span> ec<span class="special">)</span><span class="special">;</span></pre>
 484 <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p>
 485 </li>
 486 <li class="listitem">
 487 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T<span class="special">&gt;</span> <span class="identifier">T</span> <span class="special">&amp;</span> <a name="idm46262974498928-bb"></a><span class="identifier">get_variable</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&amp;</span> name<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 488 <p>Load a variable from the referenced library.</p>
 489 <p>Unlinke shared_library::get this function will also load scoped variables, which also includes static class members.</p>
 490 <div class="note"><table border="0" summary="Note">
 491 <tr>
 492 <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../../doc/src/images/note.png"></td>
 493 <th align="left">Note</th>
 494 </tr>
 495 <tr><td align="left" valign="top"><p>When mangled, MSVC will also check the type.</p></td></tr>
 496 </table></div>
 497 <p>
 498
 499
 500
 501
 502 </p>
 503 <div class="variablelist"><table border="0" class="variablelist compact">
 504 <colgroup>
 505 <col align="left" valign="top">
 506 <col>
 507 </colgroup>
 508 <tbody>
 509 <tr>
 510 <td><p><span class="term">Parameters:</span></p></td>
 511 <td><div class="variablelist"><table border="0" class="variablelist compact">
 512 <colgroup>
 513 <col align="left" valign="top">
 514 <col>
 515 </colgroup>
 516 <tbody><tr>
 517 <td><p><span class="term"><code class="computeroutput">name</code></span></p></td>
 518 <td><p>Name of the variable </p></td>
 519 </tr></tbody>
 520 </table></div></td>
 521 </tr>
 522 <tr>
 523 <td><p><span class="term">Template Parameters:</span></p></td>
 524 <td><div class="variablelist"><table border="0" class="variablelist compact">
 525 <colgroup>
 526 <col align="left" valign="top">
 527 <col>
 528 </colgroup>
 529 <tbody><tr>
 530 <td><p><span class="term"><code class="computeroutput">T</code></span></p></td>
 531 <td><p>Type of the variable </p></td>
 532 </tr></tbody>
 533 </table></div></td>
 534 </tr>
 535 <tr>
 536 <td><p><span class="term">Returns:</span></p></td>
 537 <td><p>A reference to the variable of type T.</p></td>
 538 </tr>
 539 <tr>
 540 <td><p><span class="term">Throws:</span></p></td>
 541 <td> </td>
 542 </tr>
 543 </tbody>
 544 </table></div>
 545 </li>
 546 <li class="listitem">
 547 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Func<span class="special">&gt;</span> <span class="identifier">Func</span> <span class="special">&amp;</span> <a name="idm46262974492576-bb"></a><span class="identifier">get_function</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&amp;</span> name<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 548 <p>Load a function from the referenced library.</p>
 549 <p><span class="bold"><strong>Example:</strong></span> </p>
 550 <pre class="programlisting"><span class="identifier">smart_library</span> <span class="identifier">lib</span><span class="special">(</span><span class="string">"test_lib.so"</span><span class="special">)</span><span class="special">;</span>
 551 <span class="keyword">typedef</span> <span class="keyword">int</span>      <span class="special">(</span><span class="special">&amp;</span><span class="identifier">add_ints</span><span class="special">)</span><span class="special">(</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">int</span><span class="special">)</span><span class="special">;</span>
 552 <span class="keyword">typedef</span> <span class="keyword">double</span> <span class="special">(</span><span class="special">&amp;</span><span class="identifier">add_doubles</span><span class="special">)</span><span class="special">(</span><span class="keyword">double</span><span class="special">,</span> <span class="keyword">double</span><span class="special">)</span><span class="special">;</span>
 553 <span class="identifier">add_ints</span>     <span class="identifier">f1</span> <span class="special">=</span> <span class="identifier">lib</span><span class="special">.</span><span class="identifier">get_function</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">(</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">int</span><span class="special">)</span><span class="special">&gt;</span>         <span class="special">(</span><span class="string">"func_name"</span><span class="special">)</span><span class="special">;</span>
 554 <span class="identifier">add_doubles</span>  <span class="identifier">f2</span> <span class="special">=</span> <span class="identifier">lib</span><span class="special">.</span><span class="identifier">get_function</span><span class="special">&lt;</span><span class="keyword">double</span><span class="special">(</span><span class="keyword">double</span><span class="special">,</span> <span class="keyword">double</span><span class="special">)</span><span class="special">&gt;</span><span class="special">(</span><span class="string">"func_name"</span><span class="special">)</span><span class="special">;</span>
 555 </pre>
 556 <div class="note"><table border="0" summary="Note">
 557 <tr>
 558 <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../../doc/src/images/note.png"></td>
 559 <th align="left">Note</th>
 560 </tr>
 561 <tr><td align="left" valign="top"><p>When mangled, MSVC will also check the return type.</p></td></tr>
 562 </table></div>
 563 <p>
 564
 565
 566
 567
 568 </p>
 569 <div class="variablelist"><table border="0" class="variablelist compact">
 570 <colgroup>
 571 <col align="left" valign="top">
 572 <col>
 573 </colgroup>
 574 <tbody>
 575 <tr>
 576 <td><p><span class="term">Parameters:</span></p></td>
 577 <td><div class="variablelist"><table border="0" class="variablelist compact">
 578 <colgroup>
 579 <col align="left" valign="top">
 580 <col>
 581 </colgroup>
 582 <tbody><tr>
 583 <td><p><span class="term"><code class="computeroutput">name</code></span></p></td>
 584 <td><p>Name of the function. </p></td>
 585 </tr></tbody>
 586 </table></div></td>
 587 </tr>
 588 <tr>
 589 <td><p><span class="term">Template Parameters:</span></p></td>
 590 <td><div class="variablelist"><table border="0" class="variablelist compact">
 591 <colgroup>
 592 <col align="left" valign="top">
 593 <col>
 594 </colgroup>
 595 <tbody><tr>
 596 <td><p><span class="term"><code class="computeroutput">Func</code></span></p></td>
 597 <td><p>Type of the function, required for determining the overload </p></td>
 598 </tr></tbody>
 599 </table></div></td>
 600 </tr>
 601 <tr>
 602 <td><p><span class="term">Returns:</span></p></td>
 603 <td><p>A reference to the function of type F.</p></td>
 604 </tr>
 605 <tr>
 606 <td><p><span class="term">Throws:</span></p></td>
 607 <td> </td>
 608 </tr>
 609 </tbody>
 610 </table></div>
 611 </li>
 612 <li class="listitem">
 613 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Class<span class="special">,</span> <span class="keyword">typename</span> Func<span class="special">&gt;</span>
 614   <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <a name="idm46262974484768-bb"></a><span class="identifier">get_mem_fn</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&amp;</span> name<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 615 <p>Load a member-function from the referenced library.</p>
 616 <p><span class="bold"><strong>Example</strong></span> (import class is MyClass, which is available inside the library and the host):</p>
 617 <pre class="programlisting"><span class="identifier">smart_library</span> <span class="identifier">lib</span><span class="special">(</span><span class="string">"test_lib.so"</span><span class="special">)</span><span class="special">;</span>
 618
 619 <span class="keyword">typedef</span> <span class="keyword">int</span>      <span class="identifier">MyClass</span><span class="special">(</span><span class="special">*</span><span class="identifier">func</span><span class="special">)</span><span class="special">(</span><span class="keyword">int</span><span class="special">)</span><span class="special">;</span>
 620 <span class="keyword">typedef</span> <span class="keyword">int</span>   <span class="identifier">MyClass</span><span class="special">(</span><span class="special">*</span><span class="identifier">func_const</span><span class="special">)</span><span class="special">(</span><span class="keyword">int</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
 621
 622 <span class="identifier">add_ints</span>     <span class="identifier">f1</span> <span class="special">=</span> <span class="identifier">lib</span><span class="special">.</span><span class="identifier">get_mem_fn</span><span class="special">&lt;</span><span class="identifier">MyClass</span><span class="special">,</span> <span class="keyword">int</span><span class="special">(</span><span class="keyword">int</span><span class="special">)</span><span class="special">&gt;</span>              <span class="special">(</span><span class="string">"MyClass::function"</span><span class="special">)</span><span class="special">;</span>
 623 <span class="identifier">add_doubles</span>  <span class="identifier">f2</span> <span class="special">=</span> <span class="identifier">lib</span><span class="special">.</span><span class="identifier">get_mem_fn</span><span class="special">&lt;</span><span class="keyword">const</span> <span class="identifier">MyClass</span><span class="special">,</span> <span class="keyword">double</span><span class="special">(</span><span class="keyword">double</span><span class="special">)</span><span class="special">&gt;</span><span class="special">(</span><span class="string">"MyClass::function"</span><span class="special">)</span><span class="special">;</span>
 624 </pre>
 625 <div class="note"><table border="0" summary="Note">
 626 <tr>
 627 <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../../doc/src/images/note.png"></td>
 628 <th align="left">Note</th>
 629 </tr>
 630 <tr><td align="left" valign="top"><p>When mangled, MSVC will also check the return type.</p></td></tr>
 631 </table></div>
 632 <p>
 633
 634
 635
 636
 637 </p>
 638 <div class="variablelist"><table border="0" class="variablelist compact">
 639 <colgroup>
 640 <col align="left" valign="top">
 641 <col>
 642 </colgroup>
 643 <tbody>
 644 <tr>
 645 <td><p><span class="term">Parameters:</span></p></td>
 646 <td><div class="variablelist"><table border="0" class="variablelist compact">
 647 <colgroup>
 648 <col align="left" valign="top">
 649 <col>
 650 </colgroup>
 651 <tbody><tr>
 652 <td><p><span class="term"><code class="computeroutput">name</code></span></p></td>
 653 <td><p>Name of the function. </p></td>
 654 </tr></tbody>
 655 </table></div></td>
 656 </tr>
 657 <tr>
 658 <td><p><span class="term">Template Parameters:</span></p></td>
 659 <td><div class="variablelist"><table border="0" class="variablelist compact">
 660 <colgroup>
 661 <col align="left" valign="top">
 662 <col>
 663 </colgroup>
 664 <tbody>
 665 <tr>
 666 <td><p><span class="term"><code class="computeroutput">Class</code></span></p></td>
 667 <td><p>The class the function is a member of. If Class is const, the function will be assumed as taking a const this-pointer. The same applies for volatile. </p></td>
 668 </tr>
 669 <tr>
 670 <td><p><span class="term"><code class="computeroutput">Func</code></span></p></td>
 671 <td><p>Signature of the function, required for determining the overload </p></td>
 672 </tr>
 673 </tbody>
 674 </table></div></td>
 675 </tr>
 676 <tr>
 677 <td><p><span class="term">Returns:</span></p></td>
 678 <td><p>A pointer to the member-function with the signature provided</p></td>
 679 </tr>
 680 <tr>
 681 <td><p><span class="term">Throws:</span></p></td>
 682 <td> </td>
 683 </tr>
 684 </tbody>
 685 </table></div>
 686 </li>
 687 <li class="listitem">
 688 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Signature<span class="special">&gt;</span> <span class="identifier">constructor</span><span class="special">&lt;</span> <span class="identifier">Signature</span> <span class="special">&gt;</span> <a name="idm46262974475616-bb"></a><span class="identifier">get_constructor</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 689 <p>Load a constructor from the referenced library.</p>
 690 <p><span class="bold"><strong>Example</strong></span> (import class is MyClass, which is available inside the library and the host):</p>
 691 <pre class="programlisting"><span class="identifier">smart_library</span> <span class="identifier">lib</span><span class="special">(</span><span class="string">"test_lib.so"</span><span class="special">)</span><span class="special">;</span>
 692
 693 <span class="identifier">constructor</span><span class="special">&lt;</span><span class="identifier">MyClass</span><span class="special">(</span><span class="keyword">int</span><span class="special">)</span>    <span class="identifier">f1</span> <span class="special">=</span> <span class="identifier">lib</span><span class="special">.</span><span class="identifier">get_mem_fn</span><span class="special">&lt;</span><span class="identifier">MyClass</span><span class="special">(</span><span class="keyword">int</span><span class="special">)</span><span class="special">&gt;</span><span class="special">(</span><span class="special">)</span><span class="special">;</span>
 694 </pre>
 695 <p>
 696
 697
 698 </p>
 699 <div class="variablelist"><table border="0" class="variablelist compact">
 700 <colgroup>
 701 <col align="left" valign="top">
 702 <col>
 703 </colgroup>
 704 <tbody>
 705 <tr>
 706 <td><p><span class="term">Template Parameters:</span></p></td>
 707 <td><div class="variablelist"><table border="0" class="variablelist compact">
 708 <colgroup>
 709 <col align="left" valign="top">
 710 <col>
 711 </colgroup>
 712 <tbody><tr>
 713 <td><p><span class="term"><code class="computeroutput">Signature</code></span></p></td>
 714 <td><p>Signature of the function, required for determining the overload. The return type is the class which this is the constructor of. </p></td>
 715 </tr></tbody>
 716 </table></div></td>
 717 </tr>
 718 <tr>
 719 <td><p><span class="term">Returns:</span></p></td>
 720 <td><p>A constructor object.</p></td>
 721 </tr>
 722 <tr>
 723 <td><p><span class="term">Throws:</span></p></td>
 724 <td> </td>
 725 </tr>
 726 </tbody>
 727 </table></div>
 728 </li>
 729 <li class="listitem">
 730 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Class<span class="special">&gt;</span> <span class="identifier">destructor</span><span class="special">&lt;</span> <span class="identifier">Class</span> <span class="special">&gt;</span> <a name="idm46262974469568-bb"></a><span class="identifier">get_destructor</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 731 <p>Load a destructor from the referenced library.</p>
 732 <p><span class="bold"><strong>Example</strong></span> (import class is MyClass, which is available inside the library and the host):</p>
 733 <pre class="programlisting"><span class="identifier">smart_library</span> <span class="identifier">lib</span><span class="special">(</span><span class="string">"test_lib.so"</span><span class="special">)</span><span class="special">;</span>
 734
 735 <span class="identifier">destructor</span><span class="special">&lt;</span><span class="identifier">MyClass</span><span class="special">&gt;</span>     <span class="identifier">f1</span> <span class="special">=</span> <span class="identifier">lib</span><span class="special">.</span><span class="identifier">get_mem_fn</span><span class="special">&lt;</span><span class="identifier">MyClass</span><span class="special">&gt;</span><span class="special">(</span><span class="special">)</span><span class="special">;</span>
 736 </pre>
 737 <p>
 738
 739
 740 </p>
 741 <div class="variablelist"><table border="0" class="variablelist compact">
 742 <colgroup>
 743 <col align="left" valign="top">
 744 <col>
 745 </colgroup>
 746 <tbody>
 747 <tr>
 748 <td><p><span class="term">Template Parameters:</span></p></td>
 749 <td><div class="variablelist"><table border="0" class="variablelist compact">
 750 <colgroup>
 751 <col align="left" valign="top">
 752 <col>
 753 </colgroup>
 754 <tbody><tr>
 755 <td><p><span class="term"><code class="computeroutput">Class</code></span></p></td>
 756 <td><p>The class whose destructor shall be loaded </p></td>
 757 </tr></tbody>
 758 </table></div></td>
 759 </tr>
 760 <tr>
 761 <td><p><span class="term">Returns:</span></p></td>
 762 <td><p>A destructor object.</p></td>
 763 </tr>
 764 <tr>
 765 <td><p><span class="term">Throws:</span></p></td>
 766 <td> </td>
 767 </tr>
 768 </tbody>
 769 </table></div>
 770 </li>
 771 <li class="listitem">
 772 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Class<span class="special">&gt;</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">type_info</span> <span class="special">&amp;</span> <a name="idm46262974463616-bb"></a><span class="identifier">get_type_info</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 773 <p>Load the typeinfo of the given type.</p>
 774 <p><span class="bold"><strong>Example</strong></span> (import class is MyClass, which is available inside the library and the host):</p>
 775 <pre class="programlisting"><span class="identifier">smart_library</span> <span class="identifier">lib</span><span class="special">(</span><span class="string">"test_lib.so"</span><span class="special">)</span><span class="special">;</span>
 776
 777 <span class="identifier">std</span><span class="special">::</span><span class="identifier">type_info</span> <span class="special">&amp;</span><span class="identifier">ti</span> <span class="special">=</span> <span class="identifier">lib</span><span class="special">.</span><span class="identifier">get_Type_info</span><span class="special">&lt;</span><span class="identifier">MyClass</span><span class="special">&gt;</span><span class="special">(</span><span class="special">)</span><span class="special">;</span>
 778 </pre>
 779 <p>
 780
 781
 782 </p>
 783 <div class="variablelist"><table border="0" class="variablelist compact">
 784 <colgroup>
 785 <col align="left" valign="top">
 786 <col>
 787 </colgroup>
 788 <tbody>
 789 <tr>
 790 <td><p><span class="term">Template Parameters:</span></p></td>
 791 <td><div class="variablelist"><table border="0" class="variablelist compact">
 792 <colgroup>
 793 <col align="left" valign="top">
 794 <col>
 795 </colgroup>
 796 <tbody><tr>
 797 <td><p><span class="term"><code class="computeroutput">Class</code></span></p></td>
 798 <td><p>The class whose typeinfo shall be loaded </p></td>
 799 </tr></tbody>
 800 </table></div></td>
 801 </tr>
 802 <tr>
 803 <td><p><span class="term">Returns:</span></p></td>
 804 <td><p>A reference to a type_info object.</p></td>
 805 </tr>
 806 <tr>
 807 <td><p><span class="term">Throws:</span></p></td>
 808 <td> </td>
 809 </tr>
 810 </tbody>
 811 </table></div>
 812 </li>
 813 <li class="listitem">
 814 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Alias<span class="special">&gt;</span> <span class="keyword">void</span> <a name="idm46262974457680-bb"></a><span class="identifier">add_type_alias</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&amp;</span> name<span class="special">)</span><span class="special">;</span></pre>
 815 <p>This function can be used to add a type alias.</p>
 816 <p>This is to be used, when a class shall be imported, which is not declared on the host side.</p>
 817 <p>Example: </p>
 818 <pre class="programlisting"><span class="identifier">smart_library</span> <span class="identifier">lib</span><span class="special">(</span><span class="string">"test_lib.so"</span><span class="special">)</span><span class="special">;</span>
 819
 820 <span class="identifier">lib</span><span class="special">.</span><span class="identifier">add_type_alias</span><span class="special">&lt;</span><span class="identifier">MyAlias</span><span class="special">&gt;</span><span class="special">(</span><span class="string">"MyClass"</span><span class="special">)</span><span class="special">;</span> <span class="comment">//when using MyAlias, the library will look for MyClass</span>
 821
 822 <span class="comment">//get the destructor of MyClass</span>
 823 <span class="identifier">destructor</span><span class="special">&lt;</span><span class="identifier">MyAlias</span><span class="special">&gt;</span> <span class="identifier">dtor</span> <span class="special">=</span> <span class="identifier">lib</span><span class="special">.</span><span class="identifier">get_destructor</span><span class="special">&lt;</span><span class="identifier">MyAlias</span><span class="special">&gt;</span><span class="special">(</span><span class="special">)</span><span class="special">;</span>
 824 </pre>
 825 <p>
 826 </p>
 827 <div class="note"><table border="0" summary="Note">
 828 <tr>
 829 <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../../doc/src/images/note.png"></td>
 830 <th align="left">Note</th>
 831 </tr>
 832 <tr><td align="left" valign="top"><p>If the alias-type is not large enough for the imported class, it will result in undefined behaviour. </p></td></tr>
 833 </table></div>
 834 <p>
 835 </p>
 836 <div class="warning"><table border="0" summary="Warning">
 837 <tr>
 838 <td rowspan="2" align="center" valign="top" width="25"><img alt="[Warning]" src="../../../../../doc/src/images/warning.png"></td>
 839 <th align="left">Warning</th>
 840 </tr>
 841 <tr><td align="left" valign="top"><p>The alias will only be applied for the type signature, it will not replace the token in the scoped name. </p></td></tr>
 842 </table></div>
 843 <p>
 844 </p>
 845 <div class="variablelist"><table border="0" class="variablelist compact">
 846 <colgroup>
 847 <col align="left" valign="top">
 848 <col>
 849 </colgroup>
 850 <tbody><tr>
 851 <td><p><span class="term">Parameters:</span></p></td>
 852 <td><div class="variablelist"><table border="0" class="variablelist compact">
 853 <colgroup>
 854 <col align="left" valign="top">
 855 <col>
 856 </colgroup>
 857 <tbody><tr>
 858 <td><p><span class="term"><code class="computeroutput">name</code></span></p></td>
 859 <td><p>Name of the class the alias is for.</p></td>
 860 </tr></tbody>
 861 </table></div></td>
 862 </tr></tbody>
 863 </table></div>
 864 </li>
 865 <li class="listitem">
 866 <pre class="literallayout"><span class="keyword">void</span> <a name="idm46262974451056-bb"></a><span class="identifier">unload</span><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
 867 <p>Unloads a shared library. If library was loaded multiple times by different instances, the actual DLL/DSO won't be unloaded until there is at least one instance that references the DLL/DSO.</p>
 868 <p>
 869
 870 </p>
 871 <div class="variablelist"><table border="0" class="variablelist compact">
 872 <colgroup>
 873 <col align="left" valign="top">
 874 <col>
 875 </colgroup>
 876 <tbody>
 877 <tr>
 878 <td><p><span class="term">Postconditions:</span></p></td>
 879 <td><p>this-&gt;is_loaded() returns false. </p></td>
 880 </tr>
 881 <tr>
 882 <td><p><span class="term">Throws:</span></p></td>
 883 <td>Nothing. </td>
 884 </tr>
 885 </tbody>
 886 </table></div>
 887 </li>
 888 <li class="listitem">
 889 <pre class="literallayout"><span class="keyword">bool</span> <a name="idm46262974447760-bb"></a><span class="identifier">is_loaded</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
 890 <p>Check if an library is loaded.</p>
 891 <p>
 892
 893 </p>
 894 <div class="variablelist"><table border="0" class="variablelist compact">
 895 <colgroup>
 896 <col align="left" valign="top">
 897 <col>
 898 </colgroup>
 899 <tbody>
 900 <tr>
 901 <td><p><span class="term">Returns:</span></p></td>
 902 <td><p>true if a library has been loaded. </p></td>
 903 </tr>
 904 <tr>
 905 <td><p><span class="term">Throws:</span></p></td>
 906 <td>Nothing. </td>
 907 </tr>
 908 </tbody>
 909 </table></div>
 910 </li>
 911 <li class="listitem">
 912 <pre class="literallayout"><span class="keyword">bool</span> <a name="idm46262974444624-bb"></a><span class="keyword">operator</span><span class="special">!</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
 913 <p>Check if an library is not loaded.</p>
 914 <p>
 915
 916 </p>
 917 <div class="variablelist"><table border="0" class="variablelist compact">
 918 <colgroup>
 919 <col align="left" valign="top">
 920 <col>
 921 </colgroup>
 922 <tbody>
 923 <tr>
 924 <td><p><span class="term">Returns:</span></p></td>
 925 <td><p>true if a library has not been loaded. </p></td>
 926 </tr>
 927 <tr>
 928 <td><p><span class="term">Throws:</span></p></td>
 929 <td>Nothing. </td>
 930 </tr>
 931 </tbody>
 932 </table></div>
 933 </li>
 934 <li class="listitem">
 935 <pre class="literallayout"><span class="keyword">explicit</span> <a name="idm46262974441488-bb"></a><span class="keyword">operator</span> <span class="keyword">bool</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>bool() const <p>bool() const  </p>
 936 </li>
 937 <li class="listitem">
 938 <pre class="literallayout"><span class="keyword">bool</span> <a name="idm46262974439392-bb"></a><span class="identifier">has</span><span class="special">(</span><span class="keyword">const</span> <span class="keyword">char</span> <span class="special">*</span> symbol_name<span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
 939 <p>Search for a given symbol on loaded library. Works for all symbols, including alias names.</p>
 940 <p>
 941
 942
 943 </p>
 944 <div class="variablelist"><table border="0" class="variablelist compact">
 945 <colgroup>
 946 <col align="left" valign="top">
 947 <col>
 948 </colgroup>
 949 <tbody>
 950 <tr>
 951 <td><p><span class="term">Parameters:</span></p></td>
 952 <td><div class="variablelist"><table border="0" class="variablelist compact">
 953 <colgroup>
 954 <col align="left" valign="top">
 955 <col>
 956 </colgroup>
 957 <tbody><tr>
 958 <td><p><span class="term"><code class="computeroutput">symbol_name</code></span></p></td>
 959 <td><p>Null-terminated symbol name. Can handle std::string, char*, const char*. </p></td>
 960 </tr></tbody>
 961 </table></div></td>
 962 </tr>
 963 <tr>
 964 <td><p><span class="term">Returns:</span></p></td>
 965 <td><p><code class="computeroutput">true</code> if the loaded library contains a symbol with a given name. </p></td>
 966 </tr>
 967 <tr>
 968 <td><p><span class="term">Throws:</span></p></td>
 969 <td>Nothing. </td>
 970 </tr>
 971 </tbody>
 972 </table></div>
 973 </li>
 974 <li class="listitem">
 975 <pre class="literallayout"><span class="keyword">bool</span> <a name="idm46262974434704-bb"></a><span class="identifier">has</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&amp;</span> symbol_name<span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
 976 <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p>
 977 </li>
 978 <li class="listitem">
 979 <pre class="literallayout"><a class="link" href="smart_library.html" title="Class smart_library">smart_library</a> <span class="special">&amp;</span> <a name="idm46262974432352-bb"></a><span class="identifier">assign</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="smart_library.html" title="Class smart_library">smart_library</a> <span class="special">&amp;</span> lib<span class="special">)</span><span class="special">;</span></pre>
 980 <p>Makes *this share the same shared object as lib. If *this is loaded, then unloads it.</p>
 981 <p>
 982
 983
 984 </p>
 985 <div class="variablelist"><table border="0" class="variablelist compact">
 986 <colgroup>
 987 <col align="left" valign="top">
 988 <col>
 989 </colgroup>
 990 <tbody>
 991 <tr>
 992 <td><p><span class="term">Parameters:</span></p></td>
 993 <td><div class="variablelist"><table border="0" class="variablelist compact">
 994 <colgroup>
 995 <col align="left" valign="top">
 996 <col>
 997 </colgroup>
 998 <tbody><tr>
 999 <td><p><span class="term"><code class="computeroutput">lib</code></span></p></td>
1000 <td><p>A library instance to assign from. </p></td>
1001 </tr></tbody>
1002 </table></div></td>
1003 </tr>
1004 <tr>
1005 <td><p><span class="term">Postconditions:</span></p></td>
1006 <td><p>lib.location() == this-&gt;location() </p></td>
1007 </tr>
1008 <tr>
1009 <td><p><span class="term">Throws:</span></p></td>
1010 <td> </td>
1011 </tr>
1012 </tbody>
1013 </table></div>
1014 </li>
1015 <li class="listitem">
1016 <pre class="literallayout"><span class="keyword">void</span> <a name="idm46262974427744-bb"></a><span class="identifier">swap</span><span class="special">(</span><a class="link" href="smart_library.html" title="Class smart_library">smart_library</a> <span class="special">&amp;</span> rhs<span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
1017 <p>Swaps two libraries. Does not invalidate existing symbols and functions loaded from libraries.</p>
1018 <p>
1019
1020 </p>
1021 <div class="variablelist"><table border="0" class="variablelist compact">
1022 <colgroup>
1023 <col align="left" valign="top">
1024 <col>
1025 </colgroup>
1026 <tbody>
1027 <tr>
1028 <td><p><span class="term">Parameters:</span></p></td>
1029 <td><div class="variablelist"><table border="0" class="variablelist compact">
1030 <colgroup>
1031 <col align="left" valign="top">
1032 <col>
1033 </colgroup>
1034 <tbody><tr>
1035 <td><p><span class="term"><code class="computeroutput">rhs</code></span></p></td>
1036 <td><p>Library to swap with. </p></td>
1037 </tr></tbody>
1038 </table></div></td>
1039 </tr>
1040 <tr>
1041 <td><p><span class="term">Throws:</span></p></td>
1042 <td>Nothing. </td>
1043 </tr>
1044 </tbody>
1045 </table></div>
1046 </li>
1047 </ol></div>
1048 </div>
1049 </div>
1050 </div>
1051 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
1052 <td align="left"></td>
1053 <td align="right"><div class="copyright-footer">Copyright &#169; 2014 Renato Tegon Forti, Antony Polukhin<br>Copyright &#169; 2015 Antony Polukhin<br>Copyright &#169; 2016 Antony Polukhin, Klemens Morgenstern<br>Copyright &#169; 2017-2019 Antony Polukhin<p>
1054         Distributed under the Boost Software License, Version 1.0. (See accompanying
1055         file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
1056       </p>
1057 </div></td>
1058 </tr></table>
1059 <hr>
1060 <div class="spirit-nav">
1061 <a accesskey="p" href="../load_mode/type.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../../boost_dll/reference.html#header.boost.dll.smart_library_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="get_idm46262974368544.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a>
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