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<div class="headertitle"><div class="title">lru_cache2.cpp</div></div>
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<div class="contents">
<a href="../../dc/daa/lru__cache2_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> </div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#include &lt;cassert&gt;</span> <span class="comment">// for assert</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#include &lt;cstdint&gt;</span> <span class="comment">// for std::uint32_t</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#include &lt;iostream&gt;</span> <span class="comment">// for std::cout</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#include &lt;unordered_map&gt;</span> <span class="comment">// for std::unordered_map</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="keyword">namespace </span><a class="code hl_namespace" href="../../d0/d6f/namespaceothers.html">others</a> {</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="keyword">namespace </span><a class="code hl_namespace" href="../../db/dde/namespaceothers_1_1_cache.html">Cache</a> {</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span><span class="keyword">class </span><a class="code hl_class" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html">D_Node</a> {</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> T <a class="code hl_variable" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html#a8902e7ff872fa3c80fe6ce5f5cf5cc75">data</a>; </div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> D_Node&lt;T&gt; *<a class="code hl_variable" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html#a19e954cbb710ea8318bcb6aaef78e2d5">prev</a>; </div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> D_Node&lt;T&gt; *<a class="code hl_variable" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html#a0043eb287c54b3b2fb91ce354878a7bd">next</a>; </div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> </div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <span class="keyword">explicit</span> D_Node(T <a class="code hl_variable" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html#a8902e7ff872fa3c80fe6ce5f5cf5cc75">data</a>) : <a class="code hl_variable" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html#a8902e7ff872fa3c80fe6ce5f5cf5cc75">data</a>(<a class="code hl_variable" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html#a8902e7ff872fa3c80fe6ce5f5cf5cc75">data</a>), <a class="code hl_variable" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html#a19e954cbb710ea8318bcb6aaef78e2d5">prev</a>(nullptr), <a class="code hl_variable" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html#a0043eb287c54b3b2fb91ce354878a7bd">next</a>(nullptr) {}</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span>};</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> </div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> K, <span class="keyword">typename</span> V&gt;</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span><span class="keyword">using </span>CacheNode = <a class="code hl_class" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html">D_Node&lt;std::pair&lt;K, V&gt;</a>&gt;;</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> K, <span class="keyword">typename</span> V&gt;</div>
<div class="foldopen" id="foldopen00061" data-start="{" data-end="};">
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"><a class="line" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html"> 61</a></span><span class="keyword">class </span><a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a8980cbbc9cf0a98a9592b40c4d6ec28f">LRUCache</a> {</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"><a class="line" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a042bb403f4452ad8c669fbf87ef82821"> 62</a></span> CacheNode&lt;K, V&gt; *<a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a042bb403f4452ad8c669fbf87ef82821">head</a>; </div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"><a class="line" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a448121f391a71f4cf88c3cb6c4cf3100"> 63</a></span> CacheNode&lt;K, V&gt; *<a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a448121f391a71f4cf88c3cb6c4cf3100">tail</a>; </div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"><a class="line" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#af34bb8b8eaa34cc499b4fed30b9d05fc"> 64</a></span> std::uint32_t <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#af34bb8b8eaa34cc499b4fed30b9d05fc">_capacity</a>; </div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> </div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> std::unordered_map&lt;K, CacheNode&lt;K, V&gt; *&gt;</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"><a class="line" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a8dab0f69410484f772946befd24cc3c5"> 67</a></span> <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a8dab0f69410484f772946befd24cc3c5">node_map</a>; </div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> </div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <span class="keyword">public</span>:</div>
<div class="foldopen" id="foldopen00075" data-start="{" data-end="}">
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"><a class="line" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a8980cbbc9cf0a98a9592b40c4d6ec28f"> 75</a></span> <span class="keyword">explicit</span> <a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a8980cbbc9cf0a98a9592b40c4d6ec28f">LRUCache</a>(<span class="keywordtype">int</span> <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#af34bb8b8eaa34cc499b4fed30b9d05fc">_capacity</a>)</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> : <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a042bb403f4452ad8c669fbf87ef82821">head</a>(nullptr), <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a448121f391a71f4cf88c3cb6c4cf3100">tail</a>(nullptr), <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#af34bb8b8eaa34cc499b4fed30b9d05fc">_capacity</a>(<a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#af34bb8b8eaa34cc499b4fed30b9d05fc">_capacity</a>) {}</div>
</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> </div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> <span class="keyword">private</span>:</div>
<div class="foldopen" id="foldopen00083" data-start="{" data-end="}">
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"><a class="line" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a2e53b5ad1368d87da501f61473eb9ea2"> 83</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a2e53b5ad1368d87da501f61473eb9ea2">push_front</a>(CacheNode&lt;K, V&gt; *node_ptr) {</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> <span class="keywordflow">if</span> (!<a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a042bb403f4452ad8c669fbf87ef82821">head</a>) {</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a042bb403f4452ad8c669fbf87ef82821">head</a> = node_ptr;</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a448121f391a71f4cf88c3cb6c4cf3100">tail</a> = node_ptr;</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> }</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> </div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> node_ptr-&gt;<a class="code hl_variable" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html#a0043eb287c54b3b2fb91ce354878a7bd">next</a> = <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a042bb403f4452ad8c669fbf87ef82821">head</a>;</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a042bb403f4452ad8c669fbf87ef82821">head</a>-&gt;prev = node_ptr;</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a042bb403f4452ad8c669fbf87ef82821">head</a> = node_ptr;</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> }</div>
</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span></div>
<div class="foldopen" id="foldopen00099" data-start="{" data-end="}">
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"><a class="line" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ad022d494b40f82417340b113445e79a4"> 99</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ad022d494b40f82417340b113445e79a4">make_recent</a>(CacheNode&lt;K, V&gt; *node_ptr) {</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> <span class="keywordflow">if</span> (<a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a042bb403f4452ad8c669fbf87ef82821">head</a> == node_ptr) {</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> }</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> </div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> CacheNode&lt;K, V&gt; *prev = node_ptr-&gt;<a class="code hl_variable" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html#a19e954cbb710ea8318bcb6aaef78e2d5">prev</a>;</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> CacheNode&lt;K, V&gt; *next = node_ptr-&gt;<a class="code hl_variable" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html#a0043eb287c54b3b2fb91ce354878a7bd">next</a>;</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> </div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> prev-&gt;<a class="code hl_variable" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html#a0043eb287c54b3b2fb91ce354878a7bd">next</a> = next;</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> <span class="keywordflow">if</span> (next) {</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> next-&gt;<a class="code hl_variable" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html#a19e954cbb710ea8318bcb6aaef78e2d5">prev</a> = prev;</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a448121f391a71f4cf88c3cb6c4cf3100">tail</a> = prev;</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> }</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> </div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> node_ptr-&gt;<a class="code hl_variable" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html#a19e954cbb710ea8318bcb6aaef78e2d5">prev</a> = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> node_ptr-&gt;<a class="code hl_variable" href="../../de/d21/classothers_1_1_cache_1_1_d___node.html#a0043eb287c54b3b2fb91ce354878a7bd">next</a> = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> <a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a2e53b5ad1368d87da501f61473eb9ea2">push_front</a>(node_ptr);</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> }</div>
</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span></div>
<div class="foldopen" id="foldopen00122" data-start="{" data-end="}">
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"><a class="line" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ab211a4be58491bf11834cae88a0c44f7"> 122</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ab211a4be58491bf11834cae88a0c44f7">pop_back</a>() {</div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> <span class="keywordflow">if</span> (!<a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a042bb403f4452ad8c669fbf87ef82821">head</a>) {</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> }</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> <span class="keywordflow">if</span> (<a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a042bb403f4452ad8c669fbf87ef82821">head</a> == <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a448121f391a71f4cf88c3cb6c4cf3100">tail</a>) {</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> <span class="keyword">delete</span> <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a042bb403f4452ad8c669fbf87ef82821">head</a>;</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a042bb403f4452ad8c669fbf87ef82821">head</a> = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a448121f391a71f4cf88c3cb6c4cf3100">tail</a> = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> }</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> </div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> CacheNode&lt;K, V&gt; *temp = <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a448121f391a71f4cf88c3cb6c4cf3100">tail</a>;</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a448121f391a71f4cf88c3cb6c4cf3100">tail</a> = <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a448121f391a71f4cf88c3cb6c4cf3100">tail</a>-&gt;prev;</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a448121f391a71f4cf88c3cb6c4cf3100">tail</a>-&gt;next = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> <span class="keyword">delete</span> temp;</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> }</div>
</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> </div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> <span class="keyword">public</span>:</div>
<div class="foldopen" id="foldopen00145" data-start="{" data-end="}">
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"><a class="line" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a5ee34fcee480f21bb6f68a34f0f69b45"> 145</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a5ee34fcee480f21bb6f68a34f0f69b45">put</a>(K key, V value) {</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> <span class="comment">// update the value if key already exists</span></div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> <span class="keywordflow">if</span> (<a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a8dab0f69410484f772946befd24cc3c5">node_map</a>.count(key)) {</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a8dab0f69410484f772946befd24cc3c5">node_map</a>[key]-&gt;data.second = value;</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> <a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ad022d494b40f82417340b113445e79a4">make_recent</a>(<a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a8dab0f69410484f772946befd24cc3c5">node_map</a>[key]);</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> }</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> </div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> <span class="comment">// if the cache is full</span></div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> <span class="comment">// remove the least recently used item</span></div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> <span class="keywordflow">if</span> (<a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a8dab0f69410484f772946befd24cc3c5">node_map</a>.size() == <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#af34bb8b8eaa34cc499b4fed30b9d05fc">_capacity</a>) {</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a8dab0f69410484f772946befd24cc3c5">node_map</a>.erase(<a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a448121f391a71f4cf88c3cb6c4cf3100">tail</a>-&gt;data.first);</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> <a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ab211a4be58491bf11834cae88a0c44f7">pop_back</a>();</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> }</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> </div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> CacheNode&lt;K, V&gt; *newNode = <span class="keyword">new</span> CacheNode&lt;K, V&gt;({key, value});</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> </div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a8dab0f69410484f772946befd24cc3c5">node_map</a>[key] = newNode;</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> <a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a2e53b5ad1368d87da501f61473eb9ea2">push_front</a>(newNode);</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> }</div>
</div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span></div>
<div class="foldopen" id="foldopen00172" data-start="{" data-end="}">
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"><a class="line" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ac1be0357ecc7c34144f3d9a63c6cb3ea"> 172</a></span> V <a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ac1be0357ecc7c34144f3d9a63c6cb3ea">get</a>(K key) {</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> <span class="keywordflow">if</span> (!<a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a8dab0f69410484f772946befd24cc3c5">node_map</a>.count(key)) {</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">&quot;key is not present in the cache&quot;</span>);</div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> }</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> </div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> <span class="comment">// move node to the beginning of the list</span></div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> V value = <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a8dab0f69410484f772946befd24cc3c5">node_map</a>[key]-&gt;data.second;</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> <a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ad022d494b40f82417340b113445e79a4">make_recent</a>(<a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a8dab0f69410484f772946befd24cc3c5">node_map</a>[key]);</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> <span class="keywordflow">return</span> value;</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> }</div>
</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span></div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"><a class="line" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a1b709333874b4633ee02a3661cd042e1"> 187</a></span> <span class="keywordtype">int</span> <a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a1b709333874b4633ee02a3661cd042e1">size</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a8dab0f69410484f772946befd24cc3c5">node_map</a>.size(); }</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span></div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"><a class="line" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#af8edfe5a7def5d5b846463041c33136a"> 193</a></span> <span class="keywordtype">int</span> <a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#af8edfe5a7def5d5b846463041c33136a">capacity</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#af34bb8b8eaa34cc499b4fed30b9d05fc">_capacity</a>; }</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span></div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"><a class="line" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ab8b6a6aa95db678596bc2a49e864683e"> 199</a></span> <span class="keywordtype">bool</span> <a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ab8b6a6aa95db678596bc2a49e864683e">empty</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a8dab0f69410484f772946befd24cc3c5">node_map</a>.empty(); }</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span></div>
<div class="foldopen" id="foldopen00205" data-start="{" data-end="}">
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"><a class="line" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a6d855ff72ad6fe548eb564b7f87abe06"> 205</a></span> <a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a6d855ff72ad6fe548eb564b7f87abe06">~LRUCache</a>() {</div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> <span class="keyword">auto</span> it = <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a8dab0f69410484f772946befd24cc3c5">node_map</a>.begin();</div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span> <span class="keywordflow">while</span> (it != <a class="code hl_variable" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a8dab0f69410484f772946befd24cc3c5">node_map</a>.end()) {</div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span> <span class="keyword">delete</span> it-&gt;second;</div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> ++it;</div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span> }</div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> }</div>
</div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span>};</div>
</div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span>} <span class="comment">// namespace Cache</span></div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span>} <span class="comment">// namespace others</span></div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span></div>
<div class="foldopen" id="foldopen00220" data-start="{" data-end="}">
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"><a class="line" href="../../dc/daa/lru__cache2_8cpp.html#aa8dca7b867074164d5f45b0f3851269d"> 220</a></span><span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code hl_function" href="../../dc/daa/lru__cache2_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a>() {</div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span> <a class="code hl_class" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html">others::Cache::LRUCache&lt;int, int&gt;</a> cache(5);</div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span> </div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span> <span class="comment">// test the initial state of the cache</span></div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span> assert(cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a1b709333874b4633ee02a3661cd042e1">size</a>() == 0);</div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span> assert(cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#af8edfe5a7def5d5b846463041c33136a">capacity</a>() == 5);</div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span> assert(cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ab8b6a6aa95db678596bc2a49e864683e">empty</a>());</div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span> </div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span> <span class="comment">// test insertion in the cache</span></div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span> cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a5ee34fcee480f21bb6f68a34f0f69b45">put</a>(1, 10);</div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span> cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a5ee34fcee480f21bb6f68a34f0f69b45">put</a>(-2, 20);</div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"> 231</span> </div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"> 232</span> <span class="comment">// test the state of cache after inserting some items</span></div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span> assert(cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a1b709333874b4633ee02a3661cd042e1">size</a>() == 2);</div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span> assert(cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#af8edfe5a7def5d5b846463041c33136a">capacity</a>() == 5);</div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span> assert(!cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ab8b6a6aa95db678596bc2a49e864683e">empty</a>());</div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span> </div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span> <span class="comment">// test getting items from the cache</span></div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno"> 238</span> assert(cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ac1be0357ecc7c34144f3d9a63c6cb3ea">get</a>(1) == 10);</div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span> assert(cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ac1be0357ecc7c34144f3d9a63c6cb3ea">get</a>(-2) == 20);</div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno"> 240</span> </div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span> cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a5ee34fcee480f21bb6f68a34f0f69b45">put</a>(-3, -30);</div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno"> 242</span> cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a5ee34fcee480f21bb6f68a34f0f69b45">put</a>(4, 40);</div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span> cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a5ee34fcee480f21bb6f68a34f0f69b45">put</a>(5, -50);</div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span> cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a5ee34fcee480f21bb6f68a34f0f69b45">put</a>(6, 60);</div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno"> 245</span> </div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno"> 246</span> <span class="comment">// test the state after inserting more items than the capacity</span></div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno"> 247</span> assert(cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a1b709333874b4633ee02a3661cd042e1">size</a>() == 5);</div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"> 248</span> assert(cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#af8edfe5a7def5d5b846463041c33136a">capacity</a>() == 5);</div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span> assert(!cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ab8b6a6aa95db678596bc2a49e864683e">empty</a>());</div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"> 250</span> </div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno"> 251</span> <span class="comment">// fetching 1 throws runtime_error</span></div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span> <span class="comment">// as 1 was evicted being the least recently used</span></div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span> <span class="comment">// when 6 was added</span></div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span> <span class="keywordflow">try</span> {</div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno"> 255</span> cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ac1be0357ecc7c34144f3d9a63c6cb3ea">get</a>(1);</div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span> } <span class="keywordflow">catch</span> (<span class="keyword">const</span> std::runtime_error &amp;e) {</div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno"> 257</span> assert(std::string(e.what()) == <span class="stringliteral">&quot;key is not present in the cache&quot;</span>);</div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno"> 258</span> }</div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"> 259</span> </div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span> <span class="comment">// test retrieval of all items in the cache</span></div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span> assert(cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ac1be0357ecc7c34144f3d9a63c6cb3ea">get</a>(-2) == 20);</div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span> assert(cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ac1be0357ecc7c34144f3d9a63c6cb3ea">get</a>(-3) == -30);</div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span> assert(cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ac1be0357ecc7c34144f3d9a63c6cb3ea">get</a>(4) == 40);</div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno"> 264</span> assert(cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ac1be0357ecc7c34144f3d9a63c6cb3ea">get</a>(5) == -50);</div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno"> 265</span> assert(cache.<a class="code hl_function" href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ac1be0357ecc7c34144f3d9a63c6cb3ea">get</a>(6) == 60);</div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"> 266</span> </div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span> std::cout &lt;&lt; <span class="stringliteral">&quot;test - passed\n&quot;</span>;</div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span>}</div>
</div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span></div>
<div class="foldopen" id="foldopen00274" data-start="{" data-end="}">
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"><a class="line" href="../../dc/daa/lru__cache2_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4"> 274</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="../../dc/daa/lru__cache2_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a>() {</div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span> <a class="code hl_function" href="../../dc/daa/lru__cache2_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a>(); <span class="comment">// run the self test implementation</span></div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno"> 277</span>}</div>
</div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_d___node_html"><div class="ttname"><a href="../../de/d21/classothers_1_1_cache_1_1_d___node.html">others::Cache::D_Node</a></div><div class="ttdoc">Node for a doubly linked list with data, prev and next pointers.</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d65/lfu__cache_8cpp_source.html#l00045">lfu_cache.cpp:45</a></div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_d___node_html_a0043eb287c54b3b2fb91ce354878a7bd"><div class="ttname"><a href="../../de/d21/classothers_1_1_cache_1_1_d___node.html#a0043eb287c54b3b2fb91ce354878a7bd">others::Cache::D_Node::next</a></div><div class="ttdeci">D_Node&lt; T &gt; * next</div><div class="ttdoc">next node in the doubly linked list</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d65/lfu__cache_8cpp_source.html#l00049">lfu_cache.cpp:49</a></div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_d___node_html_a19e954cbb710ea8318bcb6aaef78e2d5"><div class="ttname"><a href="../../de/d21/classothers_1_1_cache_1_1_d___node.html#a19e954cbb710ea8318bcb6aaef78e2d5">others::Cache::D_Node::prev</a></div><div class="ttdeci">D_Node&lt; T &gt; * prev</div><div class="ttdoc">previous node in the doubly linked list</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d65/lfu__cache_8cpp_source.html#l00048">lfu_cache.cpp:48</a></div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_d___node_html_a8902e7ff872fa3c80fe6ce5f5cf5cc75"><div class="ttname"><a href="../../de/d21/classothers_1_1_cache_1_1_d___node.html#a8902e7ff872fa3c80fe6ce5f5cf5cc75">others::Cache::D_Node::data</a></div><div class="ttdeci">T data</div><div class="ttdoc">data of the node</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d65/lfu__cache_8cpp_source.html#l00047">lfu_cache.cpp:47</a></div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_r_u_cache_html"><div class="ttname"><a href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html">others::Cache::LRUCache</a></div><div class="ttdoc">LRUCache.</div><div class="ttdef"><b>Definition</b> <a href="#l00061">lru_cache2.cpp:61</a></div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_r_u_cache_html_a042bb403f4452ad8c669fbf87ef82821"><div class="ttname"><a href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a042bb403f4452ad8c669fbf87ef82821">others::Cache::LRUCache::head</a></div><div class="ttdeci">CacheNode&lt; K, V &gt; * head</div><div class="ttdoc">head of the doubly linked list</div><div class="ttdef"><b>Definition</b> <a href="#l00062">lru_cache2.cpp:62</a></div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_r_u_cache_html_a1b709333874b4633ee02a3661cd042e1"><div class="ttname"><a href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a1b709333874b4633ee02a3661cd042e1">others::Cache::LRUCache::size</a></div><div class="ttdeci">int size() const</div><div class="ttdoc">Returns the number of items present in the cache.</div><div class="ttdef"><b>Definition</b> <a href="#l00187">lru_cache2.cpp:187</a></div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_r_u_cache_html_a2e53b5ad1368d87da501f61473eb9ea2"><div class="ttname"><a href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a2e53b5ad1368d87da501f61473eb9ea2">others::Cache::LRUCache::push_front</a></div><div class="ttdeci">void push_front(CacheNode&lt; K, V &gt; *node_ptr)</div><div class="ttdoc">push the node to the front of the linked list.</div><div class="ttdef"><b>Definition</b> <a href="#l00083">lru_cache2.cpp:83</a></div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_r_u_cache_html_a448121f391a71f4cf88c3cb6c4cf3100"><div class="ttname"><a href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a448121f391a71f4cf88c3cb6c4cf3100">others::Cache::LRUCache::tail</a></div><div class="ttdeci">CacheNode&lt; K, V &gt; * tail</div><div class="ttdoc">tail of the doubly linked list</div><div class="ttdef"><b>Definition</b> <a href="#l00063">lru_cache2.cpp:63</a></div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_r_u_cache_html_a5ee34fcee480f21bb6f68a34f0f69b45"><div class="ttname"><a href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a5ee34fcee480f21bb6f68a34f0f69b45">others::Cache::LRUCache::put</a></div><div class="ttdeci">void put(K key, V value)</div><div class="ttdoc">upsert a key-value pair</div><div class="ttdef"><b>Definition</b> <a href="#l00145">lru_cache2.cpp:145</a></div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_r_u_cache_html_a6d855ff72ad6fe548eb564b7f87abe06"><div class="ttname"><a href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a6d855ff72ad6fe548eb564b7f87abe06">others::Cache::LRUCache::~LRUCache</a></div><div class="ttdeci">~LRUCache()</div><div class="ttdoc">destructs the cache, iterates on the map and deletes every node present in the cache.</div><div class="ttdef"><b>Definition</b> <a href="#l00205">lru_cache2.cpp:205</a></div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_r_u_cache_html_a8980cbbc9cf0a98a9592b40c4d6ec28f"><div class="ttname"><a href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a8980cbbc9cf0a98a9592b40c4d6ec28f">others::Cache::LRUCache::LRUCache</a></div><div class="ttdeci">LRUCache(int _capacity)</div><div class="ttdoc">Constructor, Initialize the head and tail pointers to nullptr and initialize the _capacity of the cac...</div><div class="ttdef"><b>Definition</b> <a href="#l00075">lru_cache2.cpp:75</a></div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_r_u_cache_html_a8dab0f69410484f772946befd24cc3c5"><div class="ttname"><a href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#a8dab0f69410484f772946befd24cc3c5">others::Cache::LRUCache::node_map</a></div><div class="ttdeci">std::unordered_map&lt; K, CacheNode&lt; K, V &gt; * &gt; node_map</div><div class="ttdoc">maps the key to the node address</div><div class="ttdef"><b>Definition</b> <a href="#l00067">lru_cache2.cpp:67</a></div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_r_u_cache_html_ab211a4be58491bf11834cae88a0c44f7"><div class="ttname"><a href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ab211a4be58491bf11834cae88a0c44f7">others::Cache::LRUCache::pop_back</a></div><div class="ttdeci">void pop_back()</div><div class="ttdoc">pop the last node in the linked list.</div><div class="ttdef"><b>Definition</b> <a href="#l00122">lru_cache2.cpp:122</a></div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_r_u_cache_html_ab8b6a6aa95db678596bc2a49e864683e"><div class="ttname"><a href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ab8b6a6aa95db678596bc2a49e864683e">others::Cache::LRUCache::empty</a></div><div class="ttdeci">bool empty() const</div><div class="ttdoc">returns whether the cache is empty or not</div><div class="ttdef"><b>Definition</b> <a href="#l00199">lru_cache2.cpp:199</a></div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_r_u_cache_html_ac1be0357ecc7c34144f3d9a63c6cb3ea"><div class="ttname"><a href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ac1be0357ecc7c34144f3d9a63c6cb3ea">others::Cache::LRUCache::get</a></div><div class="ttdeci">V get(K key)</div><div class="ttdoc">get the value of the key-value pair if exists</div><div class="ttdef"><b>Definition</b> <a href="#l00172">lru_cache2.cpp:172</a></div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_r_u_cache_html_ad022d494b40f82417340b113445e79a4"><div class="ttname"><a href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#ad022d494b40f82417340b113445e79a4">others::Cache::LRUCache::make_recent</a></div><div class="ttdeci">void make_recent(CacheNode&lt; K, V &gt; *node_ptr)</div><div class="ttdoc">move the existing node in the list to the beginning of the list.</div><div class="ttdef"><b>Definition</b> <a href="#l00099">lru_cache2.cpp:99</a></div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_r_u_cache_html_af34bb8b8eaa34cc499b4fed30b9d05fc"><div class="ttname"><a href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#af34bb8b8eaa34cc499b4fed30b9d05fc">others::Cache::LRUCache::_capacity</a></div><div class="ttdeci">std::uint32_t _capacity</div><div class="ttdoc">maximum capacity of the cache</div><div class="ttdef"><b>Definition</b> <a href="#l00064">lru_cache2.cpp:64</a></div></div>
<div class="ttc" id="aclassothers_1_1_cache_1_1_l_r_u_cache_html_af8edfe5a7def5d5b846463041c33136a"><div class="ttname"><a href="../../d8/d2e/classothers_1_1_cache_1_1_l_r_u_cache.html#af8edfe5a7def5d5b846463041c33136a">others::Cache::LRUCache::capacity</a></div><div class="ttdeci">int capacity() const</div><div class="ttdoc">Returns the total capacity of the cache.</div><div class="ttdef"><b>Definition</b> <a href="#l00193">lru_cache2.cpp:193</a></div></div>
<div class="ttc" id="alru__cache2_8cpp_html_aa8dca7b867074164d5f45b0f3851269d"><div class="ttname"><a href="../../dc/daa/lru__cache2_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a></div><div class="ttdeci">static void test()</div><div class="ttdoc">self test implementations</div><div class="ttdef"><b>Definition</b> <a href="#l00220">lru_cache2.cpp:220</a></div></div>
<div class="ttc" id="alru__cache2_8cpp_html_ae66f6b31b5ad750f1fe042a706a4e3d4"><div class="ttname"><a href="../../dc/daa/lru__cache2_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a></div><div class="ttdeci">int main()</div><div class="ttdoc">main function</div><div class="ttdef"><b>Definition</b> <a href="#l00274">lru_cache2.cpp:274</a></div></div>
<div class="ttc" id="anamespaceothers_1_1_cache_html"><div class="ttname"><a href="../../db/dde/namespaceothers_1_1_cache.html">others::Cache</a></div><div class="ttdoc">Cache algorithm.</div><div class="ttdef"><b>Definition</b> <a href="../../d9/d65/lfu__cache_8cpp_source.html#l00037">lfu_cache.cpp:37</a></div></div>
<div class="ttc" id="anamespaceothers_html"><div class="ttname"><a href="../../d0/d6f/namespaceothers.html">others</a></div><div class="ttdoc">for vector</div></div>
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