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<div class="title">MemoryUtils.h</div> </div>
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<div class="contents">
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>  </div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#pragma once</span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  </div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include "core/GpgFrontendCoreExport.h"</span></div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include "core/function/SecureMemoryAllocator.h"</span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  </div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment">/* To avoid that a compiler optimizes certain memset calls away, these</span></div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> macros may be used instead. */</span></div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#define wipememory2(_ptr, _set, _len) \</span></div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor"> do { \</span></div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor"> volatile char *_vptr = (volatile char *)(_ptr); \</span></div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor"> size_t _vlen = (_len); \</span></div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor"> while (_vlen) { \</span></div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor"> *_vptr = (_set); \</span></div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="preprocessor"> _vptr++; \</span></div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="preprocessor"> _vlen--; \</span></div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="preprocessor"> } \</span></div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor"> } while (0)</span></div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="preprocessor">#define wipememory(_ptr, _len) wipememory2(_ptr, 0, _len)</span></div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="preprocessor">#define wipe(_ptr, _len) wipememory2(_ptr, 0, _len)</span></div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  </div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor">#define xtoi_1(p) \</span></div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor"> (*(p) <= '9' ? (*(p) - '0') \</span></div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor"> : *(p) <= 'F' ? (*(p) - 'A' + 10) \</span></div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor"> : (*(p) - 'a' + 10))</span></div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor">#define xtoi_2(p) ((xtoi_1(p) * 16) + xtoi_1((p) + 1))</span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  </div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="keyword">namespace </span><a class="code" href="namespaceGpgFrontend.html">GpgFrontend</a> {</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  </div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
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<div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="classGpgFrontend_1_1PointerConverter.html"> 58</a></span> <span class="keyword">class </span><a class="code" href="classGpgFrontend_1_1PointerConverter.html">PointerConverter</a> {</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keyword">explicit</span> <a class="code" href="classGpgFrontend_1_1PointerConverter.html">PointerConverter</a>(<span class="keywordtype">void</span> *ptr) : ptr_(ptr) {}</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  </div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keyword">auto</span> AsType() <span class="keyword">const</span> -> T * { <span class="keywordflow">return</span> <span class="keyword">static_cast<</span>T *<span class="keyword">></span>(ptr_); }</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  </div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordtype">void</span> *ptr_;</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> };</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  </div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="keyword">auto</span> GPGFRONTEND_CORE_EXPORT <a class="code" href="namespaceGpgFrontend.html#afd01101bc53f022b7d4790c6855762c4">SecureMalloc</a>(std::size_t) -> <span class="keywordtype">void</span> *;</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  </div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="keyword">auto</span> GPGFRONTEND_CORE_EXPORT <a class="code" href="namespaceGpgFrontend.html#a5e86f89a31d6514217b74dd1bbc59bfe">SecureRealloc</a>(<span class="keywordtype">void</span> *, std::size_t) -> <span class="keywordtype">void</span> *;</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  </div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
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<div class="line"><a name="l00089"></a><span class="lineno"><a class="line" href="namespaceGpgFrontend.html#a398baf5153c1eb3534729d11edb01f9c"> 89</a></span> <span class="keyword">auto</span> <a class="code" href="namespaceGpgFrontend.html#a398baf5153c1eb3534729d11edb01f9c">SecureMallocAsType</a>(std::size_t size) -> T * {</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">return</span> <a class="code" href="classGpgFrontend_1_1PointerConverter.html">PointerConverter<T></a>(SecureMemoryAllocator::Allocate(size)).AsType();</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> }</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  </div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
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<div class="line"><a name="l00099"></a><span class="lineno"><a class="line" href="namespaceGpgFrontend.html#aa639da20e2329c4471ab5612325aef53"> 99</a></span> <span class="keyword">auto</span> <a class="code" href="namespaceGpgFrontend.html#aa639da20e2329c4471ab5612325aef53">SecureReallocAsType</a>(T *ptr, std::size_t size) -> T * {</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">return</span> <a class="code" href="classGpgFrontend_1_1PointerConverter.html">PointerConverter<T></a>(SecureMemoryAllocator::Reallocate(ptr, size))</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  .AsType();</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> }</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  </div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="keywordtype">void</span> GPGFRONTEND_CORE_EXPORT SecureFree(<span class="keywordtype">void</span> *);</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  </div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T, <span class="keyword">typename</span>... Args></div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="keyword">static</span> <span class="keyword">auto</span> SecureCreateObject(Args &&...args) -> T * {</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordtype">void</span> *mem = SecureMemoryAllocator::Allocate(<span class="keyword">sizeof</span>(T));</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">if</span> (!mem) <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  </div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">try</span> {</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">return</span> <span class="keyword">new</span> (mem) T(std::forward<Args>(args)...);</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  } <span class="keywordflow">catch</span> (...) {</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  SecureMemoryAllocator::Deallocate(mem);</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordflow">throw</span>;</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  }</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> }</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  </div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="keyword">static</span> <span class="keywordtype">void</span> SecureDestroyObject(T *obj) {</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordflow">if</span> (!obj) <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  obj->~T();</div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  SecureMemoryAllocator::Deallocate(obj);</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> }</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  </div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T, <span class="keyword">typename</span>... Args></div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="keyword">static</span> <span class="keyword">auto</span> SecureCreateUniqueObject(Args &&...args)</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  -> std::unique_ptr<T, SecureObjectDeleter<T>> {</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordtype">void</span> *mem = SecureMemoryAllocator::Allocate(<span class="keyword">sizeof</span>(T));</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordflow">if</span> (!mem) <span class="keywordflow">throw</span> std::bad_alloc();</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  </div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">try</span> {</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordflow">return</span> std::unique_ptr<T, SecureObjectDeleter<T>>(</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keyword">new</span> (mem) T(std::forward<Args>(args)...));</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  } <span class="keywordflow">catch</span> (...) {</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  SecureMemoryAllocator::Deallocate(mem);</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keywordflow">throw</span>;</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  }</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> }</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  </div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T, <span class="keyword">typename</span>... Args></div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="keyword">auto</span> SecureCreateSharedObject(Args &&...args) -> std::shared_ptr<T> {</div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordtype">void</span> *mem = SecureMemoryAllocator::Allocate(<span class="keyword">sizeof</span>(T));</div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordflow">if</span> (!mem) <span class="keywordflow">throw</span> std::bad_alloc();</div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  </div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keywordflow">try</span> {</div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  T *obj = <span class="keyword">new</span> (mem) T(std::forward<Args>(args)...);</div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordflow">return</span> std::shared_ptr<T>(obj, [](T *ptr) {</div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  ptr->~T();</div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  SecureMemoryAllocator::Deallocate(ptr);</div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  });</div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  } <span class="keywordflow">catch</span> (...) {</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  SecureMemoryAllocator::Deallocate(mem);</div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">throw</span>;</div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  }</div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> }</div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  </div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T, <span class="keyword">typename</span>... Args></div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="keyword">auto</span> SecureCreateQSharedObject(Args &&...args) -> QSharedPointer<T> {</div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordtype">void</span> *mem = SecureMemoryAllocator::Allocate(<span class="keyword">sizeof</span>(T));</div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keywordflow">if</span> (!mem) <span class="keywordflow">throw</span> std::bad_alloc();</div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  </div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordflow">try</span> {</div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  T *obj = <span class="keyword">new</span> (mem) T(std::forward<Args>(args)...);</div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">return</span> QSharedPointer<T>(obj, [](T *ptr) {</div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  ptr->~T();</div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  SecureMemoryAllocator::Deallocate(ptr);</div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  });</div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  } <span class="keywordflow">catch</span> (...) {</div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  SecureMemoryAllocator::Deallocate(mem);</div>
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<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">throw</span>;</div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  }</div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> }</div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  </div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> }; <span class="comment">// namespace GpgFrontend</span></div>
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<div class="ttc" id="aclassGpgFrontend_1_1PointerConverter_html"><div class="ttname"><a href="classGpgFrontend_1_1PointerConverter.html">GpgFrontend::PointerConverter</a></div><div class="ttdef"><b>Definition:</b> MemoryUtils.h:58</div></div>
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<div class="ttc" id="anamespaceGpgFrontend_html"><div class="ttname"><a href="namespaceGpgFrontend.html">GpgFrontend</a></div><div class="ttdef"><b>Definition:</b> app.cpp:39</div></div>
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<div class="ttc" id="anamespaceGpgFrontend_html_a398baf5153c1eb3534729d11edb01f9c"><div class="ttname"><a href="namespaceGpgFrontend.html#a398baf5153c1eb3534729d11edb01f9c">GpgFrontend::SecureMallocAsType</a></div><div class="ttdeci">auto SecureMallocAsType(std::size_t size) -> T *</div><div class="ttdef"><b>Definition:</b> MemoryUtils.h:89</div></div>
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<div class="ttc" id="anamespaceGpgFrontend_html_a5e86f89a31d6514217b74dd1bbc59bfe"><div class="ttname"><a href="namespaceGpgFrontend.html#a5e86f89a31d6514217b74dd1bbc59bfe">GpgFrontend::SecureRealloc</a></div><div class="ttdeci">auto SecureRealloc(void *ptr, std::size_t size) -> void *</div><div class="ttdef"><b>Definition:</b> MemoryUtils.cpp:37</div></div>
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<div class="ttc" id="anamespaceGpgFrontend_html_aa639da20e2329c4471ab5612325aef53"><div class="ttname"><a href="namespaceGpgFrontend.html#aa639da20e2329c4471ab5612325aef53">GpgFrontend::SecureReallocAsType</a></div><div class="ttdeci">auto SecureReallocAsType(T *ptr, std::size_t size) -> T *</div><div class="ttdef"><b>Definition:</b> MemoryUtils.h:99</div></div>
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<div class="ttc" id="anamespaceGpgFrontend_html_afd01101bc53f022b7d4790c6855762c4"><div class="ttname"><a href="namespaceGpgFrontend.html#afd01101bc53f022b7d4790c6855762c4">GpgFrontend::SecureMalloc</a></div><div class="ttdeci">auto SecureMalloc(std::size_t size) -> void *</div><div class="ttdef"><b>Definition:</b> MemoryUtils.cpp:33</div></div>
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