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+<a href="../../d8/d4d/_lazy_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// MuldeR's Utilities for Qt</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Copyright (C) 2004-2017 LoRd_MuldeR <MuldeR2@GMX.de></span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">//</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// This library is free software; you can redistribute it and/or</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// modify it under the terms of the GNU Lesser General Public</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// License as published by the Free Software Foundation; either</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// version 2.1 of the License, or (at your option) any later version.</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">//</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// This library is distributed in the hope that it will be useful,</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// Lesser General Public License for more details.</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">//</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">// You should have received a copy of the GNU Lesser General Public</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">// License along with this library; if not, write to the Free Software</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">//</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">// http://www.gnu.org/licenses/lgpl-2.1.txt</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"></span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#pragma once</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment">//MUtils</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <<a class="code" href="../../d5/d3b/_global_8h.html">MUtils/Global.h</a>></span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <MUtils/Exception.h></span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment">//Qt</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include <QScopedPointer></span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include <QAtomicPointer></span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="keyword">namespace </span><a class="code" href="../../d3/da6/namespace_m_utils.html">MUtils</a></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> {</div><div class="line"><a name="l00046"></a><span class="lineno"><a class="line" href="../../d0/dce/class_m_utils_1_1_lazy.html"> 46</a></span>  <span class="keyword">template</span><<span class="keyword">typename</span> T> <span class="keyword">class </span><a class="code" href="../../d0/dce/class_m_utils_1_1_lazy.html">Lazy</a></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  {</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  T& operator*(<span class="keywordtype">void</span>)</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  {</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordflow">while</span> (!m_data)</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  {</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordflow">if</span> (T *<span class="keyword">const</span> initializer = create())</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  {</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">if</span> (m_data.testAndSetOrdered(NULL, initializer))</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  {</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordflow">return</span> *initializer;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  }</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  }</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  {</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  MUTILS_THROW(<span class="stringliteral">"Initializer function returned NULL!"</span>);</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  }</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  }</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">return</span> *m_data;</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  }</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keyword">virtual</span> T *create() = 0;</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  QAtomicPointer<T> m_data;</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  };</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> }</div><div class="ttc" id="_global_8h_html"><div class="ttname"><a href="../../d5/d3b/_global_8h.html">Global.h</a></div><div class="ttdoc">This file contains miscellaneous functions that are generally useful for Qt-based applications...</div></div>
+<div class="ttc" id="class_m_utils_1_1_lazy_html"><div class="ttname"><a href="../../d0/dce/class_m_utils_1_1_lazy.html">MUtils::Lazy</a></div><div class="ttdoc">Lazy initialization template class. </div><div class="ttdef"><b>Definition:</b> Lazy.h:46</div></div>
+<div class="ttc" id="namespace_m_utils_html"><div class="ttname"><a href="../../d3/da6/namespace_m_utils.html">MUtils</a></div><div class="ttdoc">Global MUtils namespace. </div><div class="ttdef"><b>Definition:</b> CPUFeatures.h:37</div></div>
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