doc/third_party/Pluma/html/DLibrary_8cpp_source.htm

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  29 <div class="title">DLibrary.cpp</div>  </div>
  30 </div><!--header-->
  31 <div class="contents">
  32 <div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">//</span></div>
  33 <div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">// Pluma - Plug-in Management Framework</span></div>
  34 <div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">// Copyright (C) 2010-2012 Gil Costa (gsaurus@gmail.com)</span></div>
  35 <div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">//</span></div>
  36 <div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">// This software is provided &#39;as-is&#39;, without any express or implied warranty.</span></div>
  37 <div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">// In no event will the authors be held liable for any damages arising from the use of this software.</span></div>
  38 <div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">//</span></div>
  39 <div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">// Permission is granted to anyone to use this software for any purpose,</span></div>
  40 <div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">// including commercial applications, and to alter it and redistribute it freely,</span></div>
  41 <div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">// subject to the following restrictions:</span></div>
  42 <div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">//</span></div>
  43 <div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">// 1. The origin of this software must not be misrepresented;</span></div>
  44 <div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">//    you must not claim that you wrote the original software.</span></div>
  45 <div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">//    If you use this software in a product, an acknowledgment</span></div>
  46 <div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">//    in the product documentation would be appreciated but is not required.</span></div>
  47 <div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment">//</span></div>
  48 <div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment">// 2. Altered source versions must be plainly marked as such,</span></div>
  49 <div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">//    and must not be misrepresented as being the original software.</span></div>
  50 <div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">//</span></div>
  51 <div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment">// 3. This notice may not be removed or altered from any source distribution.</span></div>
  52 <div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment">//</span></div>
  53 <div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="comment"></span></div>
  54 <div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;</div>
  55 <div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="comment">// Headers</span></div>
  56 <div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="comment"></span><span class="preprocessor">#include &lt;Pluma/DLibrary.hpp&gt;</span></div>
  57 <div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#include &lt;cstdio&gt;</span></div>
  58 <div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor">#include &lt;string&gt;</span></div>
  59 <div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;</div>
  60 <div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;</div>
  61 <div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="keyword">namespace </span>pluma{</div>
  62 <div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;</div>
  63 <div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="classpluma_1_1DLibrary.htm#a32400d8e50c0f03cb525ca7500b4516e">   37</a></span>&#160;<a class="code" href="classpluma_1_1DLibrary.htm">DLibrary</a>* <a class="code" href="classpluma_1_1DLibrary.htm#a32400d8e50c0f03cb525ca7500b4516e">DLibrary::load</a>(<span class="keyword">const</span> std::string&amp; path){</div>
  64 <div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    <span class="keywordflow">if</span> ( path.empty() ){</div>
  65 <div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;        fprintf(stderr, <span class="stringliteral">&quot;Failed to load library: Empty path\n&quot;</span>);</div>
  66 <div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;        <span class="keywordflow">return</span> NULL;</div>
  67 <div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    }</div>
  68 <div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;    <span class="keywordtype">void</span>* handle = NULL;</div>
  69 <div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;</div>
  70 <div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    <span class="comment">// load library - OS dependent operation</span></div>
  71 <div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="preprocessor">    #ifdef PLUMA_SYS_WINDOWS</span></div>
  72 <div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="preprocessor"></span>        handle = ::LoadLibraryA(path.c_str());</div>
  73 <div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;        <span class="keywordflow">if</span> (!handle){</div>
  74 <div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;            fprintf(stderr, <span class="stringliteral">&quot;Failed to load library \&quot;%s\&quot;.\n&quot;</span>, path.c_str());</div>
  75 <div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;            <span class="keywordflow">return</span> NULL;</div>
  76 <div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;        }</div>
  77 <div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="preprocessor">    #else</span></div>
  78 <div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="preprocessor"></span>        handle = ::dlopen(path.c_str(), RTLD_NOW);</div>
  79 <div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;        <span class="keywordflow">if</span> (!handle){</div>
  80 <div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">char</span>* errorString = ::dlerror();</div>
  81 <div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;            fprintf(stderr, <span class="stringliteral">&quot;Failed to load library \&quot;%s\&quot;.&quot;</span>, path.c_str());</div>
  82 <div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;            <span class="keywordflow">if</span>(errorString) fprintf(stderr, <span class="stringliteral">&quot; OS returned error: \&quot;%s\&quot;.&quot;</span>, errorString);</div>
  83 <div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;            fprintf(stderr, <span class="stringliteral">&quot;\n&quot;</span>);</div>
  84 <div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;            <span class="keywordflow">return</span> NULL;</div>
  85 <div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;        }</div>
  86 <div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="preprocessor">    #endif</span></div>
  87 <div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="preprocessor"></span>    <span class="comment">// return a DLibrary with the DLL handle</span></div>
  88 <div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;    <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="classpluma_1_1DLibrary.htm">DLibrary</a>(handle);</div>
  89 <div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;}</div>
  90 <div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div>
  91 <div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;</div>
  92 <div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="classpluma_1_1DLibrary.htm#a3fa679bc824b36ce61b67716bedd15c7">   67</a></span>&#160;<a class="code" href="classpluma_1_1DLibrary.htm#a3fa679bc824b36ce61b67716bedd15c7">DLibrary::~DLibrary</a>(){</div>
  93 <div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;    <span class="keywordflow">if</span> (handle){</div>
  94 <div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="preprocessor">        #ifdef PLUMA_SYS_WINDOWS</span></div>
  95 <div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="preprocessor"></span>            ::FreeLibrary( (HMODULE)handle );</div>
  96 <div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;<span class="preprocessor">        #else</span></div>
  97 <div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="preprocessor"></span>            ::dlclose(handle);</div>
  98 <div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;<span class="preprocessor">        #endif</span></div>
  99 <div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;<span class="preprocessor"></span>    }</div>
 100 <div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;}</div>
 101 <div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;</div>
 102 <div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;</div>
 103 <div class="line"><a name="l00079"></a><span class="lineno"><a class="line" href="classpluma_1_1DLibrary.htm#a57dd3726140cce08957e40cb5b001d84">   79</a></span>&#160;<span class="keywordtype">void</span>* <a class="code" href="classpluma_1_1DLibrary.htm#a57dd3726140cce08957e40cb5b001d84">DLibrary::getSymbol</a>(<span class="keyword">const</span> std::string&amp; symbol){</div>
 104 <div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    <span class="keywordflow">if</span> (!handle){</div>
 105 <div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;        fprintf(stderr, <span class="stringliteral">&quot;Cannot inspect library symbols, library isn&#39;t loaded.\n&quot;</span>);</div>
 106 <div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;        <span class="keywordflow">return</span> NULL;</div>
 107 <div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;    }</div>
 108 <div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    <span class="keywordtype">void</span>* res;</div>
 109 <div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="preprocessor">    #ifdef PLUMA_SYS_WINDOWS</span></div>
 110 <div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="preprocessor"></span>        res = (<span class="keywordtype">void</span>*)(::GetProcAddress((HMODULE)handle, symbol.c_str()));</div>
 111 <div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="preprocessor">    #else</span></div>
 112 <div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="preprocessor"></span>        res = (<span class="keywordtype">void</span>*)(::dlsym(handle, symbol.c_str()));</div>
 113 <div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="preprocessor">    #endif</span></div>
 114 <div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="preprocessor"></span>    <span class="keywordflow">if</span> (!res){</div>
 115 <div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;        fprintf(stderr, <span class="stringliteral">&quot;Library symbol \&quot;%s\&quot; not found.\n&quot;</span>, symbol.c_str());</div>
 116 <div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;        <span class="keywordflow">return</span> NULL;</div>
 117 <div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;    }</div>
 118 <div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;    <span class="keywordflow">return</span> res;</div>
 119 <div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;}</div>
 120 <div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;</div>
 121 <div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;</div>
 122 <div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;DLibrary::DLibrary(<span class="keywordtype">void</span>* handle):</div>
 123 <div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;    handle(handle)</div>
 124 <div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;{</div>
 125 <div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    <span class="comment">// Nothing to do</span></div>
 126 <div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;}</div>
 127 <div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;</div>
 128 <div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;}   <span class="comment">// namespace pluma</span></div>
 129 <div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;</div>
 130 <div class="ttc" id="classpluma_1_1DLibrary_htm_a32400d8e50c0f03cb525ca7500b4516e"><div class="ttname"><a href="classpluma_1_1DLibrary.htm#a32400d8e50c0f03cb525ca7500b4516e">pluma::DLibrary::load</a></div><div class="ttdeci">static DLibrary * load(const std::string &amp;path)</div><div class="ttdoc">Load a library. </div><div class="ttdef"><b>Definition:</b> <a href="DLibrary_8cpp_source.htm#l00037">DLibrary.cpp:37</a></div></div>
 131 <div class="ttc" id="classpluma_1_1DLibrary_htm"><div class="ttname"><a href="classpluma_1_1DLibrary.htm">pluma::DLibrary</a></div><div class="ttdoc">Manages a Dynamic Linking Library. </div><div class="ttdef"><b>Definition:</b> <a href="DLibrary_8hpp_source.htm#l00049">DLibrary.hpp:49</a></div></div>
 132 <div class="ttc" id="classpluma_1_1DLibrary_htm_a57dd3726140cce08957e40cb5b001d84"><div class="ttname"><a href="classpluma_1_1DLibrary.htm#a57dd3726140cce08957e40cb5b001d84">pluma::DLibrary::getSymbol</a></div><div class="ttdeci">void * getSymbol(const std::string &amp;symbol)</div><div class="ttdoc">Get a symbol from the library. </div><div class="ttdef"><b>Definition:</b> <a href="DLibrary_8cpp_source.htm#l00079">DLibrary.cpp:79</a></div></div>
 133 <div class="ttc" id="classpluma_1_1DLibrary_htm_a3fa679bc824b36ce61b67716bedd15c7"><div class="ttname"><a href="classpluma_1_1DLibrary.htm#a3fa679bc824b36ce61b67716bedd15c7">pluma::DLibrary::~DLibrary</a></div><div class="ttdeci">~DLibrary()</div><div class="ttdoc">Destructor. </div><div class="ttdef"><b>Definition:</b> <a href="DLibrary_8cpp_source.htm#l00067">DLibrary.cpp:67</a></div></div>
 134 </div><!-- fragment --></div><!-- contents -->
 135
 136         <p id="footer">
 137             &nbsp;::&nbsp; Copyright &copy; 2011 Gil Costa, all rights reserved &nbsp;::&nbsp;
 138             Documentation generated by <a href="http://www.doxygen.org/" title="doxygen website">doxygen 1.7.4</a> &nbsp;::&nbsp;
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