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<div class="title">BookListeners.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) 2012, 2013 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/app/ledger/OrderBookDB.h&gt;</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="preprocessor">#include &lt;ripple/app/misc/NetworkOPs.h&gt;</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="preprocessor">#include &lt;ripple/json/to_string.h&gt;</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160; </div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceripple.html">ripple</a> {</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; </div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"><a class="line" href="classripple_1_1BookListeners.html#a5d7f4c227a690e895b952472a4202ca1"> 27</a></span>&#160;<a class="code" href="classripple_1_1BookListeners.html#a5d7f4c227a690e895b952472a4202ca1">BookListeners::addSubscriber</a>(<a class="codeRef" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">InfoSub::ref</a> sub)</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; <a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/lock_guard.html">std::lock_guard</a> sl(<a class="code" href="classripple_1_1BookListeners.html#a18dd8b67ac39506dcf7a980a4b0e250e">mLock</a>);</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; <a class="code" href="classripple_1_1BookListeners.html#a27f5d2654d8ab4b0ed518c81809b6ebc">mListeners</a>[sub-&gt;getSeq()] = sub;</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;}</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; </div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="classripple_1_1BookListeners.html#a53dad68c41be892909cfa1d182b54c39"> 34</a></span>&#160;<a class="code" href="classripple_1_1BookListeners.html#a53dad68c41be892909cfa1d182b54c39">BookListeners::removeSubscriber</a>(<a class="codeRef" href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint64_t</a> seq)</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; <a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/lock_guard.html">std::lock_guard</a> sl(<a class="code" href="classripple_1_1BookListeners.html#a18dd8b67ac39506dcf7a980a4b0e250e">mLock</a>);</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; <a class="code" href="classripple_1_1BookListeners.html#a27f5d2654d8ab4b0ed518c81809b6ebc">mListeners</a>.erase(seq);</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;}</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="keywordtype">void</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"><a class="line" href="classripple_1_1BookListeners.html#ab76eb6a5597ec490e37f5c4a271a8d03"> 41</a></span>&#160;<a class="code" href="classripple_1_1BookListeners.html#ab76eb6a5597ec490e37f5c4a271a8d03">BookListeners::publish</a>(</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <a class="code" href="classJson_1_1Value.html">Json::Value</a> <span class="keyword">const</span>&amp; jvObj,</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/container/unordered_set.html">hash_set&lt;std::uint64_t&gt;</a>&amp; havePublished)</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;{</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/lock_guard.html">std::lock_guard</a> sl(<a class="code" href="classripple_1_1BookListeners.html#a18dd8b67ac39506dcf7a980a4b0e250e">mLock</a>);</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keyword">auto</span> it = <a class="code" href="classripple_1_1BookListeners.html#a27f5d2654d8ab4b0ed518c81809b6ebc">mListeners</a>.cbegin();</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; <span class="keywordflow">while</span> (it != <a class="code" href="classripple_1_1BookListeners.html#a27f5d2654d8ab4b0ed518c81809b6ebc">mListeners</a>.cend())</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; {</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">InfoSub::pointer</a> p = it-&gt;second.lock();</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; <span class="keywordflow">if</span> (p)</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; <span class="comment">// Only publish jvObj if this is the first occurence</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="keywordflow">if</span>(havePublished.<a class="codeRef" href="http://en.cppreference.com/w/cpp/container/unordered_set/emplace.html">emplace</a>(p-&gt;getSeq()).second)</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; {</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; p-&gt;send(jvObj, <span class="keyword">true</span>);</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; ++it;</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; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; it = <a class="code" href="classripple_1_1BookListeners.html#a27f5d2654d8ab4b0ed518c81809b6ebc">mListeners</a>.erase(it);</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; }</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;}</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;} <span class="comment">// namespace ripple</span></div>
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<div class="ttc" id="ashared_ptr_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr&lt; InfoSub &gt;</a></div></div>
<div class="ttc" id="aunordered_set_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/unordered_set.html">std::unordered_set</a></div><div class="ttdoc">STL class.</div></div>
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<div class="ttc" id="aclassripple_1_1BookListeners_html_a18dd8b67ac39506dcf7a980a4b0e250e"><div class="ttname"><a href="classripple_1_1BookListeners.html#a18dd8b67ac39506dcf7a980a4b0e250e">ripple::BookListeners::mLock</a></div><div class="ttdeci">std::recursive_mutex mLock</div><div class="ttdef"><b>Definition:</b> <a href="BookListeners_8h_source.html#l00064">BookListeners.h:64</a></div></div>
<div class="ttc" id="aclassripple_1_1BookListeners_html_a53dad68c41be892909cfa1d182b54c39"><div class="ttname"><a href="classripple_1_1BookListeners.html#a53dad68c41be892909cfa1d182b54c39">ripple::BookListeners::removeSubscriber</a></div><div class="ttdeci">void removeSubscriber(std::uint64_t sub)</div><div class="ttdoc">Stop publishing to a subscriber.</div><div class="ttdef"><b>Definition:</b> <a href="BookListeners_8cpp_source.html#l00034">BookListeners.cpp:34</a></div></div>
<div class="ttc" id="aclassripple_1_1BookListeners_html_ab76eb6a5597ec490e37f5c4a271a8d03"><div class="ttname"><a href="classripple_1_1BookListeners.html#ab76eb6a5597ec490e37f5c4a271a8d03">ripple::BookListeners::publish</a></div><div class="ttdeci">void publish(Json::Value const &amp;jvObj, hash_set&lt; std::uint64_t &gt; &amp;havePublished)</div><div class="ttdoc">Publish a transaction to subscribers.</div><div class="ttdef"><b>Definition:</b> <a href="BookListeners_8cpp_source.html#l00041">BookListeners.cpp:41</a></div></div>
<div class="ttc" id="ainteger_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint64_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="aclassripple_1_1BookListeners_html_a5d7f4c227a690e895b952472a4202ca1"><div class="ttname"><a href="classripple_1_1BookListeners.html#a5d7f4c227a690e895b952472a4202ca1">ripple::BookListeners::addSubscriber</a></div><div class="ttdeci">void addSubscriber(InfoSub::ref sub)</div><div class="ttdoc">Add a new subscription for this book.</div><div class="ttdef"><b>Definition:</b> <a href="BookListeners_8cpp_source.html#l00027">BookListeners.cpp:27</a></div></div>
<div class="ttc" id="aclassJson_1_1Value_html"><div class="ttname"><a href="classJson_1_1Value.html">Json::Value</a></div><div class="ttdoc">Represents a JSON value.</div><div class="ttdef"><b>Definition:</b> <a href="json__value_8h_source.html#l00141">json_value.h:141</a></div></div>
<div class="ttc" id="aclassripple_1_1BookListeners_html_a27f5d2654d8ab4b0ed518c81809b6ebc"><div class="ttname"><a href="classripple_1_1BookListeners.html#a27f5d2654d8ab4b0ed518c81809b6ebc">ripple::BookListeners::mListeners</a></div><div class="ttdeci">hash_map&lt; std::uint64_t, InfoSub::wptr &gt; mListeners</div><div class="ttdef"><b>Definition:</b> <a href="BookListeners_8h_source.html#l00066">BookListeners.h:66</a></div></div>
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