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<div class="title">Fifo.hpp</div> </div>
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<a href="_fifo_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;</div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="types_8hpp.html">etk/types.hpp</a>&gt;</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;</div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor">#pragma once</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;</div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="preprocessor">#include &lt;mutex&gt;</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#include &lt;condition_variable&gt;</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;</div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceetk.html">etk</a> {</div><div class="line"><a name="l00021"></a><span class="lineno"><a class="line" href="classetk_1_1_fifo.html"> 21</a></span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">class</span> MY_TYPE=<span class="keywordtype">int</span>32_t&gt; <span class="keyword">class </span><a class="code" href="classetk_1_1_fifo.html">Fifo</a> {</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160; <span class="keyword">private</span> :</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160; std::mutex m_mutex; </div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; std::condition_variable m_condition; </div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; std::vector&lt;MY_TYPE&gt; m_data; </div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160; <span class="keyword">public</span> :</div><div class="line"><a name="l00030"></a><span class="lineno"><a class="line" href="classetk_1_1_fifo.html#a37abc79759bdbfe9e28b273e600c59f0"> 30</a></span>&#160; <a class="code" href="classetk_1_1_fifo.html#a37abc79759bdbfe9e28b273e600c59f0">Fifo</a>() {</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; <span class="comment">// nothing to do ...</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; };</div><div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="classetk_1_1_fifo.html#ae3aa50d02d2a5099ead2dcd2bda984ec"> 36</a></span>&#160; <a class="code" href="classetk_1_1_fifo.html#ae3aa50d02d2a5099ead2dcd2bda984ec">~Fifo</a>() {</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; <span class="comment">// nothing to do ...</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; };</div><div class="line"><a name="l00045"></a><span class="lineno"><a class="line" href="classetk_1_1_fifo.html#a0693f87b2886e553ccdafdac112ebbd5"> 45</a></span>&#160; <span class="keywordtype">bool</span> <a class="code" href="classetk_1_1_fifo.html#a0693f87b2886e553ccdafdac112ebbd5">wait</a>(MY_TYPE &amp;_data) {</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; std::unique_lock&lt;std::mutex&gt; lock(m_mutex);</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; <span class="comment">// Check if data is not previously here</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <span class="keywordflow">while</span>(m_data.size() == 0) {</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; m_condition.wait(lock);</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; }</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="comment">// End Waiting message :</span></div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keywordflow">if</span> (m_data.size() &gt; 0) {</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="comment">// copy element :</span></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; std::swap(_data, m_data[0]);</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="comment">// remove element :</span></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; m_data.erase(m_data.begin());</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keywordflow">return</span> <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; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; };</div><div class="line"><a name="l00068"></a><span class="lineno"><a class="line" href="classetk_1_1_fifo.html#aa08e5c57d91bc54ea08f377a6e2653e3"> 68</a></span>&#160; <span class="keywordtype">bool</span> <a class="code" href="classetk_1_1_fifo.html#aa08e5c57d91bc54ea08f377a6e2653e3">wait</a>(MY_TYPE &amp;_data, uint32_t _timeOutInUs) {</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; std::unique_lock&lt;std::mutex&gt; lock(m_mutex);</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="comment">// Check if data is not previously here</span></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; <span class="keywordflow">while</span>(m_data.size() == 0) {</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; <span class="keywordflow">if</span> (m_condition.wait_for(lock, std::chrono::microseconds(_timeOutInUs)) == std::cv_status::timeout) {</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; }</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; }</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="comment">// End Waiting message :</span></div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="keywordflow">if</span> (m_data.size() &gt; 0) {</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="comment">// copy element :</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; std::swap(_data, m_data[0]);</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; <span class="comment">// remove element :</span></div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; m_data.erase(0);</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; }</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; };</div><div class="line"><a name="l00090"></a><span class="lineno"><a class="line" href="classetk_1_1_fifo.html#a7d43270207b6da91d535a520e18f49c7"> 90</a></span>&#160; int32_t <a class="code" href="classetk_1_1_fifo.html#a7d43270207b6da91d535a520e18f49c7">count</a>() {</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; std::unique_lock&lt;std::mutex&gt; lock(m_mutex);</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; int32_t nbElement = m_data.size();</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <span class="keywordflow">return</span> nbElement;</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; };</div><div class="line"><a name="l00099"></a><span class="lineno"><a class="line" href="classetk_1_1_fifo.html#a844b4b22b7e6da8d88e301cb57555043"> 99</a></span>&#160; <span class="keywordtype">void</span> <a class="code" href="classetk_1_1_fifo.html#a844b4b22b7e6da8d88e301cb57555043">post</a>(MY_TYPE &amp;_data) {</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; std::unique_lock&lt;std::mutex&gt; lock(m_mutex);</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; m_data.push_back(_data);</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; m_condition.notify_all();</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; };</div><div class="line"><a name="l00108"></a><span class="lineno"><a class="line" href="classetk_1_1_fifo.html#aee87d87fed54bc307ea3cf3ea12250d9"> 108</a></span>&#160; <span class="keywordtype">void</span> <a class="code" href="classetk_1_1_fifo.html#aee87d87fed54bc307ea3cf3ea12250d9">post</a>(<span class="keyword">const</span> MY_TYPE &amp;_data) {</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; std::unique_lock&lt;std::mutex&gt; lock(m_mutex);</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; m_data.push_back(_data);</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; m_condition.notify_all();</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; };</div><div class="line"><a name="l00116"></a><span class="lineno"><a class="line" href="classetk_1_1_fifo.html#af8d5cb46bcba3868e9e858a79d3e22cc"> 116</a></span>&#160; <span class="keywordtype">void</span> <a class="code" href="classetk_1_1_fifo.html#af8d5cb46bcba3868e9e858a79d3e22cc">clean</a>() {</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; std::unique_lock&lt;std::mutex&gt; lock(m_mutex);</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; <span class="comment">// remove data</span></div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; m_data.clear();</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; m_condition.wait_for(lock, std::chrono::microseconds(0));</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; };</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; };</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;}</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160;</div><div class="ttc" id="classetk_1_1_fifo_html_af8d5cb46bcba3868e9e858a79d3e22cc"><div class="ttname"><a href="classetk_1_1_fifo.html#af8d5cb46bcba3868e9e858a79d3e22cc">etk::Fifo::clean</a></div><div class="ttdeci">void clean()</div><div class="ttdoc">Remove all the message in the fifo. </div><div class="ttdef"><b>Definition:</b> Fifo.hpp:116</div></div>
<div class="ttc" id="classetk_1_1_fifo_html_a844b4b22b7e6da8d88e301cb57555043"><div class="ttname"><a href="classetk_1_1_fifo.html#a844b4b22b7e6da8d88e301cb57555043">etk::Fifo::post</a></div><div class="ttdeci">void post(MY_TYPE &amp;_data)</div><div class="ttdoc">Send a message at the other thread by setting a new message in the fifo. </div><div class="ttdef"><b>Definition:</b> Fifo.hpp:99</div></div>
<div class="ttc" id="classetk_1_1_fifo_html_aee87d87fed54bc307ea3cf3ea12250d9"><div class="ttname"><a href="classetk_1_1_fifo.html#aee87d87fed54bc307ea3cf3ea12250d9">etk::Fifo::post</a></div><div class="ttdeci">void post(const MY_TYPE &amp;_data)</div><div class="ttdoc">Send a message at the other thread by setting a new message in the fifo. </div><div class="ttdef"><b>Definition:</b> Fifo.hpp:108</div></div>
<div class="ttc" id="classetk_1_1_fifo_html_a7d43270207b6da91d535a520e18f49c7"><div class="ttname"><a href="classetk_1_1_fifo.html#a7d43270207b6da91d535a520e18f49c7">etk::Fifo::count</a></div><div class="ttdeci">int32_t count()</div><div class="ttdoc">Get the number of message in the fifo. </div><div class="ttdef"><b>Definition:</b> Fifo.hpp:90</div></div>
<div class="ttc" id="namespaceetk_html"><div class="ttname"><a href="namespaceetk.html">etk</a></div><div class="ttdoc">basic namespace of the etk library. (it might contain all the etk fuctions/class/structures without m...</div><div class="ttdef"><b>Definition:</b> Archive.hpp:16</div></div>
<div class="ttc" id="types_8hpp_html"><div class="ttname"><a href="types_8hpp.html">types.hpp</a></div></div>
<div class="ttc" id="classetk_1_1_fifo_html_a37abc79759bdbfe9e28b273e600c59f0"><div class="ttname"><a href="classetk_1_1_fifo.html#a37abc79759bdbfe9e28b273e600c59f0">etk::Fifo::Fifo</a></div><div class="ttdeci">Fifo()</div><div class="ttdoc">Create a fifo with no message. </div><div class="ttdef"><b>Definition:</b> Fifo.hpp:30</div></div>
<div class="ttc" id="classetk_1_1_fifo_html_ae3aa50d02d2a5099ead2dcd2bda984ec"><div class="ttname"><a href="classetk_1_1_fifo.html#ae3aa50d02d2a5099ead2dcd2bda984ec">etk::Fifo::~Fifo</a></div><div class="ttdeci">~Fifo()</div><div class="ttdoc">Remove the fifo and all message inside. </div><div class="ttdef"><b>Definition:</b> Fifo.hpp:36</div></div>
<div class="ttc" id="classetk_1_1_fifo_html"><div class="ttname"><a href="classetk_1_1_fifo.html">etk::Fifo</a></div><div class="ttdoc">Fifo tamplate is a simple messaged fifo element to transfer data message from a thead to an other...</div><div class="ttdef"><b>Definition:</b> Fifo.hpp:21</div></div>
<div class="ttc" id="classetk_1_1_fifo_html_a0693f87b2886e553ccdafdac112ebbd5"><div class="ttname"><a href="classetk_1_1_fifo.html#a0693f87b2886e553ccdafdac112ebbd5">etk::Fifo::wait</a></div><div class="ttdeci">bool wait(MY_TYPE &amp;_data)</div><div class="ttdoc">Wait a message from the other thread. (no timeout set) </div><div class="ttdef"><b>Definition:</b> Fifo.hpp:45</div></div>
<div class="ttc" id="classetk_1_1_fifo_html_aa08e5c57d91bc54ea08f377a6e2653e3"><div class="ttname"><a href="classetk_1_1_fifo.html#aa08e5c57d91bc54ea08f377a6e2653e3">etk::Fifo::wait</a></div><div class="ttdeci">bool wait(MY_TYPE &amp;_data, uint32_t _timeOutInUs)</div><div class="ttdoc">Wait a message from the other thread, with a specified timeout. </div><div class="ttdef"><b>Definition:</b> Fifo.hpp:68</div></div>
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