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<li class="navelem"><a class="el" href="dir_df9c78dcf3f59a33b12284f95992a64b.html">ripple</a></li><li class="navelem"><a class="el" href="dir_5f536ab1985a8dcd28bcfd618bc58e92.html">basics</a></li><li class="navelem"><a class="el" href="dir_6f921693cf6aba7edd915fbfc33f741e.html">impl</a></li> </ul>
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<div class="title">partitioned_unordered_map.cpp</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">//------------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> This file is part of rippled: https://github.com/ripple/rippled</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> Copyright (c) 2021 Ripple Labs Inc.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> Permission to use, copy, modify, and/or distribute this software for any</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> purpose with or without fee is hereby granted, provided that the above</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> copyright notice and this permission notice appear in all copies.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> THE SOFTWARE IS PROVIDED &quot;AS IS&quot; AND THE AUTHOR DISCLAIMS ALL WARRANTIES</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="comment">//==============================================================================</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160; </div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#include &lt;ripple/basics/partitioned_unordered_map.h&gt;</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160; </div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="preprocessor">#include &lt;ripple/basics/SHAMapHash.h&gt;</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="preprocessor">#include &lt;ripple/basics/base_uint.h&gt;</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#include &lt;ripple/beast/hash/uhash.h&gt;</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="preprocessor">#include &lt;ripple/protocol/Protocol.h&gt;</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/limits.html">limits</a>&gt;</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/string.html">string</a>&gt;</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; </div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceripple.html">ripple</a> {</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; </div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="keyword">static</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a></div>
<div class="line"><a name="l00032"></a><span class="lineno"><a class="line" href="namespaceripple.html#a41db2b18d077b2315f0b8282743cfe7f"> 32</a></span>&#160;<a class="code" href="namespaceripple.html#a41db2b18d077b2315f0b8282743cfe7f">extract</a>(<a class="code" href="classripple_1_1base__uint.html">uint256</a> <span class="keyword">const</span>&amp; key)</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;{</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; <span class="keywordflow">return</span> *<span class="keyword">reinterpret_cast&lt;</span><a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> const*<span class="keyword">&gt;</span>(key.<a class="code" href="classripple_1_1base__uint.html#a5342507fe2fb5ac55d578e7e98863f70">data</a>());</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;}</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; </div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;<span class="keyword">static</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a></div>
<div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="namespaceripple.html#a235a855c91358ebe3956db81998142bd"> 38</a></span>&#160;<a class="code" href="namespaceripple.html#a41db2b18d077b2315f0b8282743cfe7f">extract</a>(<a class="code" href="classripple_1_1SHAMapHash.html">SHAMapHash</a> <span class="keyword">const</span>&amp; key)</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;{</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; <span class="keywordflow">return</span> *<span class="keyword">reinterpret_cast&lt;</span><a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> const*<span class="keyword">&gt;</span>(key.<a class="code" href="classripple_1_1SHAMapHash.html#a8f95b5bc14b7085d368f56aeaa17ef4f">as_uint256</a>().<a class="code" href="classripple_1_1base__uint.html#a5342507fe2fb5ac55d578e7e98863f70">data</a>());</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;}</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; </div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;<span class="keyword">static</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a></div>
<div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="namespaceripple.html#ad4fe30928104b8e0d78b50dc43ae5f34"> 44</a></span>&#160;<a class="code" href="namespaceripple.html#a41db2b18d077b2315f0b8282743cfe7f">extract</a>(<a class="codeRef" href="http://en.cppreference.com/w/cpp/types/integer.html">LedgerIndex</a> key)</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;{</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span><a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a><span class="keyword">&gt;</span>(key);</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;}</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; </div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160;<span class="keyword">static</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a></div>
<div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="namespaceripple.html#af7aa9ed7685dcc876afda7ad309db2e3"> 50</a></span>&#160;<a class="code" href="namespaceripple.html#a41db2b18d077b2315f0b8282743cfe7f">extract</a>(<a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> <span class="keyword">const</span>&amp; key)</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;{</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; return ::beast::uhash&lt;&gt;{}(key);</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;}</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; </div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Key&gt;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;<a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a></div>
<div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="namespaceripple.html#a208517700724be17511ebb152d019385"> 57</a></span>&#160;<a class="code" href="namespaceripple.html#a208517700724be17511ebb152d019385">partitioner</a>(Key <span class="keyword">const</span>&amp; key, <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> <span class="keyword">const</span> numPartitions)</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160;{</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#a41db2b18d077b2315f0b8282743cfe7f">extract</a>(key) % numPartitions;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;}</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; </div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;<span class="keyword">template</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;<a class="code" href="namespaceripple.html#ae5fdd15ae49b9dd8902d6d0eefb827ab">partitioner&lt;LedgerIndex&gt;</a>(</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <a class="code" href="namespaceripple.html#a12af8e98b794e8ee3b4dbecaed2a4efd">LedgerIndex</a> <span class="keyword">const</span>&amp; key,</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> <span class="keyword">const</span> numPartitions);</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; </div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;<span class="keyword">template</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;<a class="code" href="namespaceripple.html#a22206eb014f353afcc96542e370e40e3">partitioner&lt;uint256&gt;</a>(<a class="code" href="namespaceripple.html#a356c68147333a9a48a344718038576d9">uint256</a> <span class="keyword">const</span>&amp; key, <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> <span class="keyword">const</span> numPartitions);</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; </div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;<span class="keyword">template</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;<a class="code" href="namespaceripple.html#ae50f1a85e665e5fca56863ef5f263593">partitioner&lt;SHAMapHash&gt;</a>(SHAMapHash <span class="keyword">const</span>&amp; key, <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> <span class="keyword">const</span> numPartitions);</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; </div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;<span class="keyword">template</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;partitioner&lt;std::string&gt;(</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> <span class="keyword">const</span>&amp; key,</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> <span class="keyword">const</span> numPartitions);</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;} <span class="comment">// namespace ripple</span></div>
</div><!-- fragment --></div><!-- contents -->
<div class="ttc" id="anamespaceripple_html_ae5fdd15ae49b9dd8902d6d0eefb827ab"><div class="ttname"><a href="namespaceripple.html#ae5fdd15ae49b9dd8902d6d0eefb827ab">ripple::partitioner&lt; LedgerIndex &gt;</a></div><div class="ttdeci">template std::size_t partitioner&lt; LedgerIndex &gt;(LedgerIndex const &amp;key, std::size_t const numPartitions)</div></div>
<div class="ttc" id="anamespaceripple_html_a12af8e98b794e8ee3b4dbecaed2a4efd"><div class="ttname"><a href="namespaceripple.html#a12af8e98b794e8ee3b4dbecaed2a4efd">ripple::LedgerIndex</a></div><div class="ttdeci">std::uint32_t LedgerIndex</div><div class="ttdoc">A ledger index.</div><div class="ttdef"><b>Definition:</b> <a href="Protocol_8h_source.html#l00057">Protocol.h:57</a></div></div>
<div class="ttc" id="abasic_string_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a></div><div class="ttdoc">STL class.</div></div>
<div class="ttc" id="anamespaceripple_html_ae50f1a85e665e5fca56863ef5f263593"><div class="ttname"><a href="namespaceripple.html#ae50f1a85e665e5fca56863ef5f263593">ripple::partitioner&lt; SHAMapHash &gt;</a></div><div class="ttdeci">template std::size_t partitioner&lt; SHAMapHash &gt;(SHAMapHash const &amp;key, std::size_t const numPartitions)</div></div>
<div class="ttc" id="aclassripple_1_1base__uint_html_a5342507fe2fb5ac55d578e7e98863f70"><div class="ttname"><a href="classripple_1_1base__uint.html#a5342507fe2fb5ac55d578e7e98863f70">ripple::base_uint::data</a></div><div class="ttdeci">pointer data()</div><div class="ttdef"><b>Definition:</b> <a href="base__uint_8h_source.html#l00115">base_uint.h:115</a></div></div>
<div class="ttc" id="aclassripple_1_1SHAMapHash_html"><div class="ttname"><a href="classripple_1_1SHAMapHash.html">ripple::SHAMapHash</a></div><div class="ttdef"><b>Definition:</b> <a href="SHAMapHash_8h_source.html#l00032">SHAMapHash.h:32</a></div></div>
<div class="ttc" id="anamespaceripple_html_a22206eb014f353afcc96542e370e40e3"><div class="ttname"><a href="namespaceripple.html#a22206eb014f353afcc96542e370e40e3">ripple::partitioner&lt; uint256 &gt;</a></div><div class="ttdeci">template std::size_t partitioner&lt; uint256 &gt;(uint256 const &amp;key, std::size_t const numPartitions)</div></div>
<div class="ttc" id="anamespaceripple_html_a356c68147333a9a48a344718038576d9"><div class="ttname"><a href="namespaceripple.html#a356c68147333a9a48a344718038576d9">ripple::uint256</a></div><div class="ttdeci">base_uint&lt; 256 &gt; uint256</div><div class="ttdef"><b>Definition:</b> <a href="base__uint_8h_source.html#l00529">base_uint.h:529</a></div></div>
<div class="ttc" id="aclassripple_1_1base__uint_html"><div class="ttname"><a href="classripple_1_1base__uint.html">ripple::base_uint</a></div><div class="ttdoc">Integers of any length that is a multiple of 32-bits.</div><div class="ttdef"><b>Definition:</b> <a href="base__uint_8h_source.html#l00075">base_uint.h:75</a></div></div>
<div class="ttc" id="anamespaceripple_html_a208517700724be17511ebb152d019385"><div class="ttname"><a href="namespaceripple.html#a208517700724be17511ebb152d019385">ripple::partitioner</a></div><div class="ttdeci">std::size_t partitioner(Key const &amp;key, std::size_t const numPartitions)</div><div class="ttdef"><b>Definition:</b> <a href="partitioned__unordered__map_8cpp_source.html#l00057">partitioned_unordered_map.cpp:57</a></div></div>
<div class="ttc" id="ainteger_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint32_t</a></div></div>
<div class="ttc" id="anamespaceripple_html"><div class="ttname"><a href="namespaceripple.html">ripple</a></div><div class="ttdoc">Use hash_* containers for keys that do not need a cryptographically secure hashing algorithm.</div><div class="ttdef"><b>Definition:</b> <a href="RCLCensorshipDetector_8h_source.html#l00029">RCLCensorshipDetector.h:29</a></div></div>
<div class="ttc" id="alimits_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/limits.html">limits</a></div></div>
<div class="ttc" id="asize_t_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a></div></div>
<div class="ttc" id="aclassripple_1_1SHAMapHash_html_a8f95b5bc14b7085d368f56aeaa17ef4f"><div class="ttname"><a href="classripple_1_1SHAMapHash.html#a8f95b5bc14b7085d368f56aeaa17ef4f">ripple::SHAMapHash::as_uint256</a></div><div class="ttdeci">uint256 const &amp; as_uint256() const</div><div class="ttdef"><b>Definition:</b> <a href="SHAMapHash_8h_source.html#l00043">SHAMapHash.h:43</a></div></div>
<div class="ttc" id="anamespaceripple_html_a41db2b18d077b2315f0b8282743cfe7f"><div class="ttname"><a href="namespaceripple.html#a41db2b18d077b2315f0b8282743cfe7f">ripple::extract</a></div><div class="ttdeci">static std::size_t extract(uint256 const &amp;key)</div><div class="ttdef"><b>Definition:</b> <a href="partitioned__unordered__map_8cpp_source.html#l00032">partitioned_unordered_map.cpp:32</a></div></div>
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