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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_880cbdb7e19477dab0ac315d644729fb.html">memory</a></li> </ul>
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<div class="headertitle"><div class="title">dl_buffer_pool.h</div></div>
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<div class="contents">
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<a href="dl__buffer__pool_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="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#pragma once</span></div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> </div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#include <vector></span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#include <cassert></span></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">namespace </span><a class="code hl_namespace" href="namespacedl.html">dl</a></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span>{</div>
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<div class="foldopen" id="foldopen00020" data-start="{" data-end="};">
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"><a class="line" href="classdl_1_1_buffer_pool.html"> 20</a></span> <span class="keyword">class </span><a class="code hl_function" href="classdl_1_1_buffer_pool.html#a232d0a2535cb2282a021b0d20924d5d9">BufferPool</a></div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> {</div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">public</span>:</div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// index、size仅做返回值（内存不会置0）</span></div>
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<div class="foldopen" id="foldopen00024" data-start="{" data-end="}">
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"><a class="line" href="classdl_1_1_buffer_pool.html#aab36987d9bdc0446a6dea51251ac9bf9"> 24</a></span> std::byte* <a class="code hl_function" href="classdl_1_1_buffer_pool.html#aab36987d9bdc0446a6dea51251ac9bf9">Malloc</a>(<span class="keywordtype">size_t</span> new_size, <span class="keywordtype">size_t</span>& index, <span class="keywordtype">size_t</span>& size)</div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> {</div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> <span class="comment">// 新大小所在index</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> new_index = <a class="code hl_function" href="classdl_1_1_buffer_pool.html#a5dbefbaa3815edbd972aec915e812af2">ToIndex</a>(new_size);</div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> index = new_index;</div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> <span class="keywordflow">if</span> (index == 16)</div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> {<span class="comment">// 需要的太大</span></div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> size = new_size;</div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> <span class="keywordflow">return</span> (std::byte*)malloc(new_size);</div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> }</div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> size = <a class="code hl_function" href="classdl_1_1_buffer_pool.html#a1d8df592c00cdffe207356ddfa4675f7">ToSize</a>(new_index);</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 class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> <span class="keywordflow">return</span> _allNode[index].Get(size);</div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> }</div>
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</div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> </div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> <span class="comment">// 传入旧地址、需求大小（不是2的幂）、所在index（返回新index），旧大小（返回新size）</span></div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> <span class="comment">// 保留旧内存值，新内存不置0</span></div>
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<div class="foldopen" id="foldopen00041" data-start="{" data-end="}">
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"><a class="line" href="classdl_1_1_buffer_pool.html#a573ee76d1062bf8ea21fc76f64d76e76"> 41</a></span> std::byte* <a class="code hl_function" href="classdl_1_1_buffer_pool.html#a573ee76d1062bf8ea21fc76f64d76e76">Realloc</a>(std::byte* p, <span class="keywordtype">size_t</span> new_size, <span class="keywordtype">size_t</span>& index, <span class="keywordtype">size_t</span>& size)</div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> {</div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> assert(new_size > size);</div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> assert(index <= 16);</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">// 新大小所在index</span></div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <span class="keywordtype">size_t</span> new_index = <a class="code hl_function" href="classdl_1_1_buffer_pool.html#a5dbefbaa3815edbd972aec915e812af2">ToIndex</a>(new_size);</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <span class="keywordflow">if</span> (new_index == 16)</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> {<span class="comment">// 需要的太大</span></div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <span class="keywordflow">if</span> (index == 16)</div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> {<span class="comment">// 之前就是自由内存</span></div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> size = new_size * 2;</div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> <span class="keywordflow">return</span> (std::byte*)realloc(p, size);</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">else</span></div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> {<span class="comment">// 之前是小内存</span></div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> <span class="comment">// 归还小内存，并且分配自由内存</span></div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> _allNode[index].Put(p);</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> </div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <span class="keywordtype">size_t</span> old_size = size;</div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> index = 16;</div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> size = new_size;</div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> std::byte* ret = (std::byte*)malloc(size);</div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> memcpy(ret, p, old_size);</div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> memset(ret + old_size, 0, size - old_size);</div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="keywordflow">return</span> ret;</div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> }</div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> }</div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> </div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="comment">// 新的是小内存</span></div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> assert(index != 16 && index != new_index);<span class="comment">// 之前不可能是自由内存 且不在同一空间</span></div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> </div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> </div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="comment">// 归还小内存，并且分配新的小内存（更大的）</span></div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> _allNode[index].Put(p);</div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> </div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> new_size = <a class="code hl_function" href="classdl_1_1_buffer_pool.html#a1d8df592c00cdffe207356ddfa4675f7">ToSize</a>(new_index);</div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> std::byte* ret = _allNode[new_index].Get(new_size);</div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> memcpy(ret, p, size);</div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> index = new_index;</div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> size = new_size;</div>
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> <span class="keywordflow">return</span> ret;</div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> }</div>
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</div>
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<div class="foldopen" id="foldopen00084" data-start="{" data-end="}">
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"><a class="line" href="classdl_1_1_buffer_pool.html#a12a2968f6267e39da9e509d19b444a33"> 84</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classdl_1_1_buffer_pool.html#a12a2968f6267e39da9e509d19b444a33">Free</a>(std::byte* p, <span class="keywordtype">size_t</span> index, <span class="keywordtype">size_t</span> size)</div>
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> {</div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="keywordflow">if</span> (index == 16)</div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> {</div>
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<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> free(p);</div>
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> <span class="keywordflow">return</span>;</div>
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<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> }</div>
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> _allNode[index].Put(p);</div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> }</div>
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</div>
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<div class="foldopen" id="foldopen00093" data-start="{" data-end="}">
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"><a class="line" href="classdl_1_1_buffer_pool.html#a41ac0c044014b3c20316d0603b27da64"> 93</a></span> std::string <a class="code hl_function" href="classdl_1_1_buffer_pool.html#a41ac0c044014b3c20316d0603b27da64">Dump</a>()</div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> {</div>
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<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> std::string ret = <span class="stringliteral">"--------------Buffer Pool--------------\n"</span>;</div>
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<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < 16; ++i)</div>
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<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> {</div>
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<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="keywordtype">size_t</span> size = <a class="code hl_function" href="classdl_1_1_buffer_pool.html#a1d8df592c00cdffe207356ddfa4675f7">ToSize</a>(i);</div>
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<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> std::string unit;</div>
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<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> <span class="keywordflow">if</span> (size < 1024)</div>
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<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> unit = <span class="stringliteral">"byte"</span>;</div>
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<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="keywordflow">else</span> <span class="keywordflow">if</span>(size < 1024 * 1024)</div>
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> {</div>
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<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> unit = <span class="stringliteral">"kb"</span>;</div>
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<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> size /= 1024;</div>
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<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> }</div>
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<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> <span class="keywordflow">else</span></div>
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> {</div>
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<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> unit = <span class="stringliteral">"mb"</span>;</div>
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<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> size /= 1024 * 1024;</div>
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<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> }</div>
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<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> ret += fmt::format(<span class="stringliteral">"[{:02}] {:<3} {:<4} x {}\n"</span>, i, size, unit, _allNode[i]._memFree.size());</div>
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<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> }</div>
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<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> <span class="keywordflow">return</span> ret;</div>
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<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> }</div>
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</div>
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<div class="foldopen" id="foldopen00116" data-start="{" data-end="}">
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<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"><a class="line" href="classdl_1_1_buffer_pool.html#a1d8df592c00cdffe207356ddfa4675f7"> 116</a></span> <span class="keywordtype">size_t</span> <a class="code hl_function" href="classdl_1_1_buffer_pool.html#a1d8df592c00cdffe207356ddfa4675f7">ToSize</a>(<span class="keywordtype">size_t</span> index)</div>
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<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> {</div>
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<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> <span class="keywordflow">switch</span> (index)</div>
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<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> {</div>
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<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> <span class="keywordflow">case</span> 0: <span class="keywordflow">return</span> 256;</div>
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<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> <span class="keywordflow">case</span> 1: <span class="keywordflow">return</span> 512;</div>
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<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> <span class="keywordflow">case</span> 2: <span class="keywordflow">return</span> 1024;</div>
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<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> <span class="keywordflow">case</span> 3: <span class="keywordflow">return</span> 2048;</div>
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<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <span class="keywordflow">case</span> 4: <span class="keywordflow">return</span> 4096;</div>
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<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> <span class="keywordflow">case</span> 5: <span class="keywordflow">return</span> 8192;</div>
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<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> <span class="keywordflow">case</span> 6: <span class="keywordflow">return</span> 16384;</div>
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<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> <span class="keywordflow">case</span> 7: <span class="keywordflow">return</span> 32768;</div>
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<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> <span class="keywordflow">case</span> 8: <span class="keywordflow">return</span> 65536;</div>
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<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> <span class="keywordflow">case</span> 9: <span class="keywordflow">return</span> 131072;</div>
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<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> <span class="keywordflow">case</span> 10: <span class="keywordflow">return</span> 262144;</div>
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<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> <span class="keywordflow">case</span> 11: <span class="keywordflow">return</span> 524288;</div>
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<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> <span class="keywordflow">case</span> 12: <span class="keywordflow">return</span> 1048576;</div>
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<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> <span class="keywordflow">case</span> 13: <span class="keywordflow">return</span> 2097152;</div>
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<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> <span class="keywordflow">case</span> 14: <span class="keywordflow">return</span> 4194304;</div>
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<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> <span class="keywordflow">case</span> 15: <span class="keywordflow">return</span> 8388608;</div>
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<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> <span class="keywordflow">default</span>: <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> }</div>
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<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> }</div>
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</div>
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<div class="foldopen" id="foldopen00139" data-start="{" data-end="}">
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<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"><a class="line" href="classdl_1_1_buffer_pool.html#a5dbefbaa3815edbd972aec915e812af2"> 139</a></span> <span class="keywordtype">size_t</span> <a class="code hl_function" href="classdl_1_1_buffer_pool.html#a5dbefbaa3815edbd972aec915e812af2">ToIndex</a>(<span class="keywordtype">size_t</span> size)</div>
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<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> {</div>
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<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> <span class="keywordflow">if</span> (size <= 256) <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> <span class="keywordflow">if</span> (size <= 512) <span class="keywordflow">return</span> 1;</div>
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<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> <span class="keywordflow">if</span> (size <= 1024) <span class="keywordflow">return</span> 2;</div>
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<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> <span class="keywordflow">if</span> (size <= 2048) <span class="keywordflow">return</span> 3;</div>
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<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> <span class="keywordflow">if</span> (size <= 4096) <span class="keywordflow">return</span> 4;</div>
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<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> <span class="keywordflow">if</span> (size <= 8192) <span class="keywordflow">return</span> 5;</div>
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<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> <span class="keywordflow">if</span> (size <= 16384) <span class="keywordflow">return</span> 6;</div>
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<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> <span class="keywordflow">if</span> (size <= 32768) <span class="keywordflow">return</span> 7;</div>
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<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> <span class="keywordflow">if</span> (size <= 65536) <span class="keywordflow">return</span> 8;</div>
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<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> <span class="keywordflow">if</span> (size <= 131072) <span class="keywordflow">return</span> 9;</div>
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<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> <span class="keywordflow">if</span> (size <= 262144) <span class="keywordflow">return</span> 10;</div>
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<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> <span class="keywordflow">if</span> (size <= 524288) <span class="keywordflow">return</span> 11;</div>
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<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> <span class="keywordflow">if</span> (size <= 1048576) <span class="keywordflow">return</span> 12;</div>
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<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> <span class="keywordflow">if</span> (size <= 2097152) <span class="keywordflow">return</span> 13;</div>
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|
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> <span class="keywordflow">if</span> (size <= 4194304) <span class="keywordflow">return</span> 14;</div>
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<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> <span class="keywordflow">if</span> (size <= 8388608) <span class="keywordflow">return</span> 15;</div>
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<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> <span class="keywordflow">return</span> 16;</div>
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<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> }</div>
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|
</div>
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<div class="foldopen" id="foldopen00159" data-start="{" data-end="}">
|
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<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"><a class="line" href="classdl_1_1_buffer_pool.html#a232d0a2535cb2282a021b0d20924d5d9"> 159</a></span> <a class="code hl_function" href="classdl_1_1_buffer_pool.html#a232d0a2535cb2282a021b0d20924d5d9">BufferPool</a>() :</div>
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|
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> _allNode{}</div>
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<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> {</div>
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<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> }</div>
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</div>
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<div class="foldopen" id="foldopen00163" data-start="{" data-end="}">
|
|
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"><a class="line" href="classdl_1_1_buffer_pool.html#a02af2dcac84b4fe165273226867184ec"> 163</a></span> <a class="code hl_function" href="classdl_1_1_buffer_pool.html#a02af2dcac84b4fe165273226867184ec">~BufferPool</a>()</div>
|
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<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> {</div>
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<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> <span class="keywordflow">for</span> (<span class="keyword">auto</span>& iter : _allNode)</div>
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<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> {</div>
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<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> <span class="keywordflow">while</span> (!iter._memFree.empty())</div>
|
|
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> {</div>
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<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> free(iter._memFree.top());</div>
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<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> iter._memFree.pop();</div>
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<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> }</div>
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<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> }</div>
|
|
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> }</div>
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</div>
|
|
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> <span class="keyword">private</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> <span class="keyword">class </span>Node</div>
|
|
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> {</div>
|
|
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> <span class="keyword">public</span>:</div>
|
|
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> std::byte* Get(<span class="keywordtype">size_t</span> size)</div>
|
|
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> {</div>
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|
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> std::lock_guard guard{ _mutex };</div>
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<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> <span class="keywordflow">if</span> (_memFree.empty())</div>
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|
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> <span class="keywordflow">return</span> (std::byte*)malloc(size);</div>
|
|
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> <span class="keywordflow">else</span></div>
|
|
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> {</div>
|
|
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> std::byte* ret = _memFree.top();</div>
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|
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> _memFree.pop();</div>
|
|
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> <span class="keywordflow">return</span> ret;</div>
|
|
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> }</div>
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|
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> }</div>
|
|
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> <span class="keywordtype">void</span> Put(std::byte* p)</div>
|
|
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> {</div>
|
|
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> std::lock_guard guard{ _mutex };</div>
|
|
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> _memFree.push(p);</div>
|
|
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> }</div>
|
|
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> std::stack<std::byte*> _memFree;</div>
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|
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> std::mutex _mutex;</div>
|
|
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> };</div>
|
|
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> std::array<Node, 16> _allNode;</div>
|
|
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> };</div>
|
|
</div>
|
|
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> </div>
|
|
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> <span class="keyword">extern</span> <a class="code hl_class" href="classdl_1_1_buffer_pool.html">BufferPool</a> <a class="code hl_variable" href="namespacedl.html#a7ea00373e47c3f210a5243d16cada3cb">g_bufferPool</a>;</div>
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|
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span>}</div>
|
|
<div class="ttc" id="aclassdl_1_1_buffer_pool_html"><div class="ttname"><a href="classdl_1_1_buffer_pool.html">dl::BufferPool</a></div><div class="ttdoc">Buffer池</div><div class="ttdef"><b>定义</b> <a href="#l00020">dl_buffer_pool.h:21</a></div></div>
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|
<div class="ttc" id="aclassdl_1_1_buffer_pool_html_a02af2dcac84b4fe165273226867184ec"><div class="ttname"><a href="classdl_1_1_buffer_pool.html#a02af2dcac84b4fe165273226867184ec">dl::BufferPool::~BufferPool</a></div><div class="ttdeci">~BufferPool()</div><div class="ttdef"><b>定义</b> <a href="#l00163">dl_buffer_pool.h:163</a></div></div>
|
|
<div class="ttc" id="aclassdl_1_1_buffer_pool_html_a12a2968f6267e39da9e509d19b444a33"><div class="ttname"><a href="classdl_1_1_buffer_pool.html#a12a2968f6267e39da9e509d19b444a33">dl::BufferPool::Free</a></div><div class="ttdeci">void Free(std::byte *p, size_t index, size_t size)</div><div class="ttdef"><b>定义</b> <a href="#l00084">dl_buffer_pool.h:84</a></div></div>
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<div class="ttc" id="aclassdl_1_1_buffer_pool_html_a1d8df592c00cdffe207356ddfa4675f7"><div class="ttname"><a href="classdl_1_1_buffer_pool.html#a1d8df592c00cdffe207356ddfa4675f7">dl::BufferPool::ToSize</a></div><div class="ttdeci">size_t ToSize(size_t index)</div><div class="ttdef"><b>定义</b> <a href="#l00116">dl_buffer_pool.h:116</a></div></div>
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<div class="ttc" id="aclassdl_1_1_buffer_pool_html_a232d0a2535cb2282a021b0d20924d5d9"><div class="ttname"><a href="classdl_1_1_buffer_pool.html#a232d0a2535cb2282a021b0d20924d5d9">dl::BufferPool::BufferPool</a></div><div class="ttdeci">BufferPool()</div><div class="ttdef"><b>定义</b> <a href="#l00159">dl_buffer_pool.h:159</a></div></div>
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<div class="ttc" id="aclassdl_1_1_buffer_pool_html_a41ac0c044014b3c20316d0603b27da64"><div class="ttname"><a href="classdl_1_1_buffer_pool.html#a41ac0c044014b3c20316d0603b27da64">dl::BufferPool::Dump</a></div><div class="ttdeci">std::string Dump()</div><div class="ttdef"><b>定义</b> <a href="#l00093">dl_buffer_pool.h:93</a></div></div>
|
|
<div class="ttc" id="aclassdl_1_1_buffer_pool_html_a573ee76d1062bf8ea21fc76f64d76e76"><div class="ttname"><a href="classdl_1_1_buffer_pool.html#a573ee76d1062bf8ea21fc76f64d76e76">dl::BufferPool::Realloc</a></div><div class="ttdeci">std::byte * Realloc(std::byte *p, size_t new_size, size_t &index, size_t &size)</div><div class="ttdef"><b>定义</b> <a href="#l00041">dl_buffer_pool.h:41</a></div></div>
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|
<div class="ttc" id="aclassdl_1_1_buffer_pool_html_a5dbefbaa3815edbd972aec915e812af2"><div class="ttname"><a href="classdl_1_1_buffer_pool.html#a5dbefbaa3815edbd972aec915e812af2">dl::BufferPool::ToIndex</a></div><div class="ttdeci">size_t ToIndex(size_t size)</div><div class="ttdef"><b>定义</b> <a href="#l00139">dl_buffer_pool.h:139</a></div></div>
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|
<div class="ttc" id="aclassdl_1_1_buffer_pool_html_aab36987d9bdc0446a6dea51251ac9bf9"><div class="ttname"><a href="classdl_1_1_buffer_pool.html#aab36987d9bdc0446a6dea51251ac9bf9">dl::BufferPool::Malloc</a></div><div class="ttdeci">std::byte * Malloc(size_t new_size, size_t &index, size_t &size)</div><div class="ttdef"><b>定义</b> <a href="#l00024">dl_buffer_pool.h:24</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_a7ea00373e47c3f210a5243d16cada3cb"><div class="ttname"><a href="namespacedl.html#a7ea00373e47c3f210a5243d16cada3cb">dl::g_bufferPool</a></div><div class="ttdeci">BufferPool g_bufferPool</div></div>
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