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<li class="navelem"><a class="el" href="dir_17297ffb27ce571941f5fb5008f01a1f.html">dl</a></li><li class="navelem"><a class="el" href="dir_78beb56c8eba7ccc6c64d7863d88a69e.html">base</a></li> </ul>
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<div class="headertitle"><div class="title">dl_vector_free.h</div></div>
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<a href="dl__vector__free_8h.html">浏览该文件的文档.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#pragma once</span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#include <vector></span></div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#include <stack></span></div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span> </div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespacedl.html">dl</a></div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span>{</div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="keyword">template</span><<span class="keyword">typename</span> T></div>
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<div class="foldopen" id="foldopen00018" data-start="{" data-end="};">
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"><a class="line" href="classdl_1_1_vector_free.html"> 18</a></span><span class="keyword">class </span><a class="code hl_class" href="classdl_1_1_vector_free.html">VectorFree</a> </div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span>{</div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="keyword">public</span>:</div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// 申请一个空闲元素（O(1)）</span></div>
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<div class="foldopen" id="foldopen00022" data-start="{" data-end="}">
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"><a class="line" href="classdl_1_1_vector_free.html#a9f0f5dc0bdab5dc3e31c4b320812bb68"> 22</a></span> <span class="keywordtype">size_t</span> <a class="code hl_function" href="classdl_1_1_vector_free.html#a9f0f5dc0bdab5dc3e31c4b320812bb68">GetFree</a>() </div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> {</div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> <span class="comment">// 1. 优先用空闲列表</span></div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> <span class="keywordflow">if</span> (!_freeIndex.empty())</div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> {</div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> <span class="keywordtype">size_t</span> idx = _freeIndex.top();</div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> _freeIndex.pop();</div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> <span class="keywordflow">return</span> idx;</div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> }</div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> </div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> <span class="comment">// 2. 无空闲 → 扩容（最多触发一次）</span></div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> _data.emplace_back();</div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> <span class="keywordflow">return</span> _data.size() - 1;</div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> }</div>
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</div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> </div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> <span class="comment">// 释放元素（O(1)）</span></div>
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<div class="foldopen" id="foldopen00038" data-start="{" data-end="}">
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"><a class="line" href="classdl_1_1_vector_free.html#a00d764d169c7d84f0343ac13ae85915b"> 38</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classdl_1_1_vector_free.html#a00d764d169c7d84f0343ac13ae85915b">Release</a>(<span class="keywordtype">size_t</span> index) </div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> {</div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> <span class="keywordflow">if</span> (index < _data.size())</div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> {</div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> _freeIndex.push(index);</div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> }</div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> }</div>
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</div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> </div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="comment">// 访问元素</span></div>
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<div class="foldopen" id="foldopen00047" data-start="{" data-end="}">
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"><a class="line" href="classdl_1_1_vector_free.html#acc7d4aa0ad1c17d1144e7d38f8df8e8f"> 47</a></span> <a class="code hl_enumvalue" href="namespacedl.html#a38a0162879cdbfbbe99ba16e7a170132ab9ece18c950afbfa6b0fdbfa4ff731d3">T</a>& <a class="code hl_function" href="classdl_1_1_vector_free.html#acc7d4aa0ad1c17d1144e7d38f8df8e8f">operator[]</a>(<span class="keywordtype">size_t</span> index)</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> {</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <span class="keywordflow">return</span> _data[index];</div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> }</div>
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</div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> </div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> <span class="comment">// 获取全部数据</span></div>
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<div class="foldopen" id="foldopen00053" data-start="{" data-end="}">
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"><a class="line" href="classdl_1_1_vector_free.html#a1d712e9388296a7fa97e946b8a106a92"> 53</a></span> std::vector<T>& <a class="code hl_function" href="classdl_1_1_vector_free.html#a1d712e9388296a7fa97e946b8a106a92">data</a>() </div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> {</div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <span class="keywordflow">return</span> _data;</div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> }</div>
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</div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> </div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span><span class="keyword">private</span>:</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> std::vector<T> _data; <span class="comment">// 真实资源</span></div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> std::stack<size_t> _freeIndex; <span class="comment">// 空闲索引栈</span></div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span>};</div>
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</div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> </div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> </div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span>}</div>
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<div class="ttc" id="aclassdl_1_1_vector_free_html"><div class="ttname"><a href="classdl_1_1_vector_free.html">dl::VectorFree</a></div><div class="ttdef"><b>定义</b> <a href="#l00018">dl_vector_free.h:19</a></div></div>
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<div class="ttc" id="aclassdl_1_1_vector_free_html_a00d764d169c7d84f0343ac13ae85915b"><div class="ttname"><a href="classdl_1_1_vector_free.html#a00d764d169c7d84f0343ac13ae85915b">dl::VectorFree::Release</a></div><div class="ttdeci">void Release(size_t index)</div><div class="ttdef"><b>定义</b> <a href="#l00038">dl_vector_free.h:38</a></div></div>
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<div class="ttc" id="aclassdl_1_1_vector_free_html_a1d712e9388296a7fa97e946b8a106a92"><div class="ttname"><a href="classdl_1_1_vector_free.html#a1d712e9388296a7fa97e946b8a106a92">dl::VectorFree::data</a></div><div class="ttdeci">std::vector< T > & data()</div><div class="ttdef"><b>定义</b> <a href="#l00053">dl_vector_free.h:53</a></div></div>
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<div class="ttc" id="aclassdl_1_1_vector_free_html_a9f0f5dc0bdab5dc3e31c4b320812bb68"><div class="ttname"><a href="classdl_1_1_vector_free.html#a9f0f5dc0bdab5dc3e31c4b320812bb68">dl::VectorFree::GetFree</a></div><div class="ttdeci">size_t GetFree()</div><div class="ttdef"><b>定义</b> <a href="#l00022">dl_vector_free.h:22</a></div></div>
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<div class="ttc" id="aclassdl_1_1_vector_free_html_acc7d4aa0ad1c17d1144e7d38f8df8e8f"><div class="ttname"><a href="classdl_1_1_vector_free.html#acc7d4aa0ad1c17d1144e7d38f8df8e8f">dl::VectorFree::operator[]</a></div><div class="ttdeci">T & operator[](size_t index)</div><div class="ttdef"><b>定义</b> <a href="#l00047">dl_vector_free.h:47</a></div></div>
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<div class="ttc" id="anamespacedl_html"><div class="ttname"><a href="namespacedl.html">dl</a></div><div class="ttdef"><b>定义</b> <a href="dl__array_8h_source.html#l00021">dl_array.h:22</a></div></div>
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<div class="ttc" id="anamespacedl_html_a38a0162879cdbfbbe99ba16e7a170132ab9ece18c950afbfa6b0fdbfa4ff731d3"><div class="ttname"><a href="namespacedl.html#a38a0162879cdbfbbe99ba16e7a170132ab9ece18c950afbfa6b0fdbfa4ff731d3">dl::KeyCode::T</a></div><div class="ttdeci">@ T</div><div class="ttdef"><b>定义</b> <a href="dl__input_8h_source.html#l00121">dl_input.h:121</a></div></div>
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制作者 <a href="https://www.doxygen.org/index.html"><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.13.1
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