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<div class="title">checkpoints.cpp</div> </div>
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<a href="checkpoints_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright (c) 2009-2014 The Bitcoin developers</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Copyright (c) 2014-2017 The Dash Core developers</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Distributed under the MIT software license, see the accompanying</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// file COPYING or http://www.opensource.org/licenses/mit-license.php.</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> </div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#include "<a class="code" href="checkpoints_8h.html">checkpoints.h</a>"</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> </div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#include "<a class="code" href="chain_8h.html">chain.h</a>"</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include "<a class="code" href="chainparams_8h.html">chainparams.h</a>"</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include "<a class="code" href="validation_8h.html">validation.h</a>"</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "<a class="code" href="uint256_8h.html">uint256.h</a>"</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include <stdint.h></span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include <boost/foreach.hpp></span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div><div class="line"><a name="l00017"></a><span class="lineno"><a class="line" href="namespaceCheckpoints.html"> 17</a></span> <span class="keyword">namespace </span><a class="code" href="namespaceCheckpoints.html">Checkpoints</a> {</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00027"></a><span class="lineno"><a class="line" href="namespaceCheckpoints.html#a1ba658141a1d43d78b956b6952e0320c"> 27</a></span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="namespaceCheckpoints.html#a1ba658141a1d43d78b956b6952e0320c">SIGCHECK_VERIFICATION_FACTOR</a> = 5.0;</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00030"></a><span class="lineno"><a class="line" href="namespaceCheckpoints.html#aa2e60b5114a431ccaff32a6e1f418af1"> 30</a></span>  <span class="keywordtype">double</span> <a class="code" href="namespaceCheckpoints.html#aa2e60b5114a431ccaff32a6e1f418af1">GuessVerificationProgress</a>(<span class="keyword">const</span> <a class="code" href="structCCheckpointData.html">CCheckpointData</a>& <a class="code" href="namespacegen__base58__test__vectors.html#a8d12b07536a476098e3d74b6a79dfc9a">data</a>, <a class="code" href="classCBlockIndex.html">CBlockIndex</a> *pindex, <span class="keywordtype">bool</span> fSigchecks) {</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keywordflow">if</span> (pindex==NULL)</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keywordflow">return</span> 0.0;</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  int64_t nNow = time(NULL);</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keywordtype">double</span> fSigcheckVerificationFactor = fSigchecks ? <a class="code" href="namespaceCheckpoints.html#a1ba658141a1d43d78b956b6952e0320c">SIGCHECK_VERIFICATION_FACTOR</a> : 1.0;</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keywordtype">double</span> fWorkBefore = 0.0; <span class="comment">// Amount of work done before pindex</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordtype">double</span> fWorkAfter = 0.0; <span class="comment">// Amount of work left after pindex (estimated)</span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="comment">// Work is defined as: 1.0 per transaction before the last checkpoint, and</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="comment">// fSigcheckVerificationFactor per transaction after.</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">if</span> (pindex-><a class="code" href="classCBlockIndex.html#af3c6d6dd8a7579e5ce516d94b98d2db5">nChainTx</a> <= <a class="code" href="namespacegen__base58__test__vectors.html#a8d12b07536a476098e3d74b6a79dfc9a">data</a>.nTransactionsLastCheckpoint) {</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordtype">double</span> nCheapBefore = pindex-><a class="code" href="classCBlockIndex.html#af3c6d6dd8a7579e5ce516d94b98d2db5">nChainTx</a>;</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordtype">double</span> nCheapAfter = <a class="code" href="namespacegen__base58__test__vectors.html#a8d12b07536a476098e3d74b6a79dfc9a">data</a>.nTransactionsLastCheckpoint - pindex-><a class="code" href="classCBlockIndex.html#af3c6d6dd8a7579e5ce516d94b98d2db5">nChainTx</a>;</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordtype">double</span> nExpensiveAfter = (nNow - <a class="code" href="namespacegen__base58__test__vectors.html#a8d12b07536a476098e3d74b6a79dfc9a">data</a>.nTimeLastCheckpoint)/86400.0*<a class="code" href="namespacegen__base58__test__vectors.html#a8d12b07536a476098e3d74b6a79dfc9a">data</a>.fTransactionsPerDay;</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  fWorkBefore = nCheapBefore;</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  fWorkAfter = nCheapAfter + nExpensiveAfter*fSigcheckVerificationFactor;</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordtype">double</span> nCheapBefore = <a class="code" href="namespacegen__base58__test__vectors.html#a8d12b07536a476098e3d74b6a79dfc9a">data</a>.nTransactionsLastCheckpoint;</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordtype">double</span> nExpensiveBefore = pindex-><a class="code" href="classCBlockIndex.html#af3c6d6dd8a7579e5ce516d94b98d2db5">nChainTx</a> - <a class="code" href="namespacegen__base58__test__vectors.html#a8d12b07536a476098e3d74b6a79dfc9a">data</a>.nTransactionsLastCheckpoint;</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordtype">double</span> nExpensiveAfter = (nNow - pindex-><a class="code" href="classCBlockIndex.html#a9fe0d4463c07c466f66252e8eec25f5c">GetBlockTime</a>())/86400.0*<a class="code" href="namespacegen__base58__test__vectors.html#a8d12b07536a476098e3d74b6a79dfc9a">data</a>.fTransactionsPerDay;</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  fWorkBefore = nCheapBefore + nExpensiveBefore*fSigcheckVerificationFactor;</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  fWorkAfter = nExpensiveAfter*fSigcheckVerificationFactor;</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  }</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">return</span> fWorkBefore / (fWorkBefore + fWorkAfter);</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  }</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div><div class="line"><a name="l00059"></a><span class="lineno"><a class="line" href="namespaceCheckpoints.html#afe6d974f9851567cd7f0c6066e0919b5"> 59</a></span>  <a class="code" href="classCBlockIndex.html">CBlockIndex</a>* <a class="code" href="namespaceCheckpoints.html#afe6d974f9851567cd7f0c6066e0919b5">GetLastCheckpoint</a>(<span class="keyword">const</span> <a class="code" href="structCCheckpointData.html">CCheckpointData</a>& <a class="code" href="namespacegen__base58__test__vectors.html#a8d12b07536a476098e3d74b6a79dfc9a">data</a>)</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  {</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keyword">const</span> <a class="code" href="chainparams_8h.html#a8097178902dd6caf8be9445ccaca8a07">MapCheckpoints</a>& checkpoints = <a class="code" href="namespacegen__base58__test__vectors.html#a8d12b07536a476098e3d74b6a79dfc9a">data</a>.mapCheckpoints;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  BOOST_REVERSE_FOREACH(<span class="keyword">const</span> MapCheckpoints::value_type& i, checkpoints)</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  {</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keyword">const</span> <a class="code" href="classuint256.html">uint256</a>& hash = i.second;</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  BlockMap::const_iterator t = <a class="code" href="validation_8cpp.html#a887b8e9f9fea0ea870c6987f1fd52eb6">mapBlockIndex</a>.find(hash);</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">if</span> (t != <a class="code" href="validation_8cpp.html#a887b8e9f9fea0ea870c6987f1fd52eb6">mapBlockIndex</a>.end())</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">return</span> t->second;</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  }</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">return</span> NULL;</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  }</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span> } <span class="comment">// namespace Checkpoints</span></div><div class="ttc" id="chainparams_8h_html_a8097178902dd6caf8be9445ccaca8a07"><div class="ttname"><a href="chainparams_8h.html#a8097178902dd6caf8be9445ccaca8a07">MapCheckpoints</a></div><div class="ttdeci">std::map< int, uint256 > MapCheckpoints</div><div class="ttdef"><b>Definition:</b> <a href="chainparams_8h_source.html#l00026">chainparams.h:26</a></div></div>
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<div class="ttc" id="namespaceCheckpoints_html"><div class="ttname"><a href="namespaceCheckpoints.html">Checkpoints</a></div><div class="ttdef"><b>Definition:</b> <a href="checkpoints_8cpp_source.html#l00017">checkpoints.cpp:17</a></div></div>
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<div class="ttc" id="namespaceCheckpoints_html_afe6d974f9851567cd7f0c6066e0919b5"><div class="ttname"><a href="namespaceCheckpoints.html#afe6d974f9851567cd7f0c6066e0919b5">Checkpoints::GetLastCheckpoint</a></div><div class="ttdeci">CBlockIndex * GetLastCheckpoint(const CCheckpointData &data)</div><div class="ttdoc">Returns last CBlockIndex* in mapBlockIndex that is a checkpoint. </div><div class="ttdef"><b>Definition:</b> <a href="checkpoints_8cpp_source.html#l00059">checkpoints.cpp:59</a></div></div>
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<div class="ttc" id="validation_8h_html"><div class="ttname"><a href="validation_8h.html">validation.h</a></div></div>
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<div class="ttc" id="chainparams_8h_html"><div class="ttname"><a href="chainparams_8h.html">chainparams.h</a></div></div>
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<div class="ttc" id="structCCheckpointData_html"><div class="ttname"><a href="structCCheckpointData.html">CCheckpointData</a></div><div class="ttdef"><b>Definition:</b> <a href="chainparams_8h_source.html#l00028">chainparams.h:28</a></div></div>
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<div class="ttc" id="namespacegen__base58__test__vectors_html_a8d12b07536a476098e3d74b6a79dfc9a"><div class="ttname"><a href="namespacegen__base58__test__vectors.html#a8d12b07536a476098e3d74b6a79dfc9a">gen_base58_test_vectors.data</a></div><div class="ttdeci">data</div><div class="ttdef"><b>Definition:</b> <a href="gen__base58__test__vectors_8py_source.html#l00123">gen_base58_test_vectors.py:123</a></div></div>
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<div class="ttc" id="checkpoints_8h_html"><div class="ttname"><a href="checkpoints_8h.html">checkpoints.h</a></div></div>
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<div class="ttc" id="namespaceCheckpoints_html_a1ba658141a1d43d78b956b6952e0320c"><div class="ttname"><a href="namespaceCheckpoints.html#a1ba658141a1d43d78b956b6952e0320c">Checkpoints::SIGCHECK_VERIFICATION_FACTOR</a></div><div class="ttdeci">static const double SIGCHECK_VERIFICATION_FACTOR</div><div class="ttdef"><b>Definition:</b> <a href="checkpoints_8cpp_source.html#l00027">checkpoints.cpp:27</a></div></div>
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<div class="ttc" id="namespaceCheckpoints_html_aa2e60b5114a431ccaff32a6e1f418af1"><div class="ttname"><a href="namespaceCheckpoints.html#aa2e60b5114a431ccaff32a6e1f418af1">Checkpoints::GuessVerificationProgress</a></div><div class="ttdeci">double GuessVerificationProgress(const CCheckpointData &data, CBlockIndex *pindex, bool fSigchecks)</div><div class="ttdoc">Guess how far we are in the verification process at the given block index. </div><div class="ttdef"><b>Definition:</b> <a href="checkpoints_8cpp_source.html#l00030">checkpoints.cpp:30</a></div></div>
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<div class="ttc" id="chain_8h_html"><div class="ttname"><a href="chain_8h.html">chain.h</a></div></div>
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<div class="ttc" id="classuint256_html"><div class="ttname"><a href="classuint256.html">uint256</a></div><div class="ttdef"><b>Definition:</b> <a href="uint256_8h_source.html#l00114">uint256.h:114</a></div></div>
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<div class="ttc" id="uint256_8h_html"><div class="ttname"><a href="uint256_8h.html">uint256.h</a></div></div>
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<div class="ttc" id="classCBlockIndex_html_af3c6d6dd8a7579e5ce516d94b98d2db5"><div class="ttname"><a href="classCBlockIndex.html#af3c6d6dd8a7579e5ce516d94b98d2db5">CBlockIndex::nChainTx</a></div><div class="ttdeci">unsigned int nChainTx</div><div class="ttdef"><b>Definition:</b> <a href="chain_8h_source.html#l00134">chain.h:134</a></div></div>
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<div class="ttc" id="classCBlockIndex_html"><div class="ttname"><a href="classCBlockIndex.html">CBlockIndex</a></div><div class="ttdef"><b>Definition:</b> <a href="chain_8h_source.html#l00100">chain.h:100</a></div></div>
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<div class="ttc" id="classCBlockIndex_html_a9fe0d4463c07c466f66252e8eec25f5c"><div class="ttname"><a href="classCBlockIndex.html#a9fe0d4463c07c466f66252e8eec25f5c">CBlockIndex::GetBlockTime</a></div><div class="ttdeci">int64_t GetBlockTime() const</div><div class="ttdef"><b>Definition:</b> <a href="chain_8h_source.html#l00223">chain.h:223</a></div></div>
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<div class="ttc" id="validation_8cpp_html_a887b8e9f9fea0ea870c6987f1fd52eb6"><div class="ttname"><a href="validation_8cpp.html#a887b8e9f9fea0ea870c6987f1fd52eb6">mapBlockIndex</a></div><div class="ttdeci">BlockMap mapBlockIndex</div><div class="ttdef"><b>Definition:</b> <a href="validation_8cpp_source.html#l00064">validation.cpp:64</a></div></div>
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<li class="navelem"><a class="el" href="dir_68267d1309a1af8e8297ef4c3efbcdba.html">src</a></li><li class="navelem"><a class="el" href="checkpoints_8cpp.html">checkpoints.cpp</a></li>
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<li class="footer">Generated on Thu Dec 14 2017 13:15:02 for Dash Core by
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<a href="http://www.doxygen.org/index.html">
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<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.14 </li>
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