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<a href="cputracker_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span> </div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="preprocessor">#include "<a class="code" href="cputracker_8h.html">cputracker.h</a>"</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="preprocessor">#include "analyzer.h"</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="preprocessor">#include "printer.h"</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="preprocessor">#include "reader.h"</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span> </div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="keywordtype">int</span> g_nproc = 0;</div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="keyword">static</span> <span class="keyword">struct </span><a class="code hl_struct" href="structproc__stat.html">proc_stat</a> *g_dataBuffer[BUFFER_SIZE];</div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span>pthread_mutex_t g_dataBufferMutex = PTHREAD_MUTEX_INITIALIZER;</div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span>sem_t g_dataFilledSpaceSemaphore;</div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span>sem_t g_dataLeftSpaceSemaphore;</div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span> </div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="keyword">static</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> *g_printBuffer[BUFFER_SIZE];</div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span>pthread_mutex_t g_printBufferMutex = PTHREAD_MUTEX_INITIALIZER;</div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span>sem_t g_printFilledSpaceSemaphore;</div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span>sem_t g_printLeftSpaceSemaphore;</div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span> </div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="keyword">static</span> pthread_t readerThreadId;</div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="keyword">static</span> pthread_t analyzerThreadId;</div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="keyword">static</span> pthread_t printerThreadId;</div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> </div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="keyword">static</span> <span class="keywordtype">int</span> working[THREADS];</div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="keyword">static</span> pthread_mutex_t watchdogMutex = PTHREAD_MUTEX_INITIALIZER;</div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> </div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="keyword">static</span> <span class="keywordtype">void</span> handler(<span class="keywordtype">int</span> signum) {</div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> (void)signum;</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> pthread_cancel(readerThreadId);</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> pthread_cancel(printerThreadId);</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> pthread_cancel(analyzerThreadId);</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span>}</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> </div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span><span class="keyword">static</span> <span class="keywordtype">int</span> get_nproc(<span class="keywordtype">int</span> *nproc) {</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> *nproc = (int)sysconf(_SC_NPROCESSORS_ONLN);</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <span class="keywordflow">if</span> (*nproc == -1) {</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="keywordflow">return</span> -1;</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> }</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span>}</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> </div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span><span class="keyword">static</span> <span class="keywordtype">int</span> get_semaphore_value(sem_t *sem) {</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="keywordtype">int</span> sval;</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> sem_getvalue(sem, &sval);</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keywordflow">return</span> sval;</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span>}</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> </div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"><a class="line" href="cputracker_8c.html#a6d7b4993bb9144e4cab9f9c7420c996a"> 69</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structproc__stat.html">proc_stat</a> *<a class="code hl_function" href="cputracker_8c.html#a6d7b4993bb9144e4cab9f9c7420c996a">get_item_from_data_buffer</a>(<span class="keywordtype">void</span>) {</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="keywordtype">int</span> index = get_semaphore_value(&g_dataFilledSpaceSemaphore);</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <span class="keywordflow">return</span> g_dataBuffer[index];</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span>}</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> </div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"><a class="line" href="cputracker_8c.html#a2b8f2341417ff6536dcfd85113bd3a5d"> 79</a></span><span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> *<a class="code hl_function" href="cputracker_8c.html#a2b8f2341417ff6536dcfd85113bd3a5d">get_item_from_print_buffer</a>(<span class="keywordtype">void</span>) {</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> <span class="keywordtype">int</span> index = get_semaphore_value(&g_printFilledSpaceSemaphore);</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="keywordflow">return</span> g_printBuffer[index];</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span>}</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> </div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"><a class="line" href="cputracker_8c.html#ac99b6069bf629214ce6258902739d613"> 89</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="cputracker_8c.html#ac99b6069bf629214ce6258902739d613">notify_watchdog</a>(<span class="keywordtype">int</span> <span class="keywordtype">id</span>) {</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> pthread_mutex_lock(&watchdogMutex);</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> working[id] = 1;</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> pthread_mutex_unlock(&watchdogMutex);</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span>}</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> </div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span><span class="keyword">static</span> <span class="keywordtype">void</span> watchdog(<span class="keywordtype">void</span>) {</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="keywordflow">while</span> (1) {</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> sleep(TIMEOUT);</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> pthread_mutex_lock(&watchdogMutex);</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < THREADS; i++) {</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> <span class="keywordflow">if</span> (working[i] == 0) {</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> pthread_mutex_unlock(&watchdogMutex);</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> printf(<span class="stringliteral">"Error: Thread not responding... Terminating\n"</span>);</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> handler(-1);</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> }</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> working[i] = 0;</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> }</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> pthread_mutex_unlock(&watchdogMutex);</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> }</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span>}</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> </div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"><a class="line" href="cputracker_8c.html#aa1407f3b7f6dc9f7ba1c2049f33cfa14"> 121</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="cputracker_8c.html#aa1407f3b7f6dc9f7ba1c2049f33cfa14">main_test</a>(<span class="keywordtype">void</span>) {</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> <span class="keywordtype">int</span> nproc;</div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> <span class="keywordflow">if</span> (get_nproc(&nproc) == 0) {</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> assert(nproc >= 1);</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> }</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span>}</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> </div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span><span class="keywordtype">int</span> main(<span class="keywordtype">void</span>) {</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> <span class="keyword">struct </span>sigaction action;</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> memset(&action, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> sigaction));</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> </div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> <span class="keywordflow">if</span> (get_nproc(&g_nproc) == -1) {</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> exit(EXIT_FAILURE);</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> }</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> g_nproc++;</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> </div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < BUFFER_SIZE; i++) {</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> g_dataBuffer[i] = malloc((<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span>)g_nproc * <span class="keyword">sizeof</span>(<span class="keyword">struct</span> <a class="code hl_struct" href="structproc__stat.html">proc_stat</a>));</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> g_printBuffer[i] = malloc((<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span>)g_nproc * <span class="keyword">sizeof</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span>));</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> <span class="keywordflow">if</span> (g_dataBuffer[i] == NULL || g_printBuffer[i] == NULL) {</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> exit(EXIT_FAILURE);</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> }</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> }</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> </div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> <span class="keywordflow">if</span> (sem_init(&g_dataFilledSpaceSemaphore, 0, 0) ||</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> sem_init(&g_dataLeftSpaceSemaphore, 0, BUFFER_SIZE)) {</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> exit(EXIT_FAILURE);</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> }</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> </div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> <span class="keywordflow">if</span> (sem_init(&g_printFilledSpaceSemaphore, 0, 0) ||</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> sem_init(&g_printLeftSpaceSemaphore, 0, BUFFER_SIZE)) {</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> exit(EXIT_FAILURE);</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> }</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> </div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> pthread_create(&readerThreadId, NULL, reader, NULL);</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> pthread_create(&analyzerThreadId, NULL, <a class="code hl_function" href="analyzer_8c.html#a60d1e2bdc5c39558234c421a071d6f1c">analyzer</a>, NULL);</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> pthread_create(&printerThreadId, NULL, printer, NULL);</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> </div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> action.sa_handler = handler;</div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> sigaction(SIGTERM, &action, NULL);</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> </div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> watchdog();</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> </div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> pthread_join(readerThreadId, NULL);</div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> pthread_join(analyzerThreadId, NULL);</div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> pthread_join(printerThreadId, NULL);</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> </div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> pthread_mutex_destroy(&g_dataBufferMutex);</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> sem_destroy(&g_dataFilledSpaceSemaphore);</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> sem_destroy(&g_dataLeftSpaceSemaphore);</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> </div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> pthread_mutex_destroy(&g_printBufferMutex);</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> sem_destroy(&g_printFilledSpaceSemaphore);</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> sem_destroy(&g_printLeftSpaceSemaphore);</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> pthread_mutex_destroy(&watchdogMutex);</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < BUFFER_SIZE; i++) {</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> free(g_dataBuffer[i]);</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> free(g_printBuffer[i]);</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> }</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span>}</div>
<div class="ttc" id="aanalyzer_8c_html_a60d1e2bdc5c39558234c421a071d6f1c"><div class="ttname"><a href="analyzer_8c.html#a60d1e2bdc5c39558234c421a071d6f1c">analyzer</a></div><div class="ttdeci">void * analyzer(void *arg)</div><div class="ttdoc">Analyzer function.</div><div class="ttdef"><b>Definition:</b> <a href="analyzer_8c_source.html#l00035">analyzer.c:35</a></div></div>
<div class="ttc" id="acputracker_8c_html_a2b8f2341417ff6536dcfd85113bd3a5d"><div class="ttname"><a href="cputracker_8c.html#a2b8f2341417ff6536dcfd85113bd3a5d">get_item_from_print_buffer</a></div><div class="ttdeci">unsigned long * get_item_from_print_buffer(void)</div><div class="ttdoc">Function getting item from print buffer.</div><div class="ttdef"><b>Definition:</b> <a href="cputracker_8c_source.html#l00079">cputracker.c:79</a></div></div>
<div class="ttc" id="acputracker_8c_html_a6d7b4993bb9144e4cab9f9c7420c996a"><div class="ttname"><a href="cputracker_8c.html#a6d7b4993bb9144e4cab9f9c7420c996a">get_item_from_data_buffer</a></div><div class="ttdeci">struct proc_stat * get_item_from_data_buffer(void)</div><div class="ttdoc">Function getting item from data buffer.</div><div class="ttdef"><b>Definition:</b> <a href="cputracker_8c_source.html#l00069">cputracker.c:69</a></div></div>
<div class="ttc" id="acputracker_8c_html_aa1407f3b7f6dc9f7ba1c2049f33cfa14"><div class="ttname"><a href="cputracker_8c.html#aa1407f3b7f6dc9f7ba1c2049f33cfa14">main_test</a></div><div class="ttdeci">void main_test(void)</div><div class="ttdoc">Simple test function with asserts.</div><div class="ttdef"><b>Definition:</b> <a href="cputracker_8c_source.html#l00121">cputracker.c:121</a></div></div>
<div class="ttc" id="acputracker_8c_html_ac99b6069bf629214ce6258902739d613"><div class="ttname"><a href="cputracker_8c.html#ac99b6069bf629214ce6258902739d613">notify_watchdog</a></div><div class="ttdeci">void notify_watchdog(int id)</div><div class="ttdoc">Notify the watchdog that thread is alive.</div><div class="ttdef"><b>Definition:</b> <a href="cputracker_8c_source.html#l00089">cputracker.c:89</a></div></div>
<div class="ttc" id="acputracker_8h_html"><div class="ttname"><a href="cputracker_8h.html">cputracker.h</a></div></div>
<div class="ttc" id="astructproc__stat_html"><div class="ttname"><a href="structproc__stat.html">proc_stat</a></div><div class="ttdoc">Struct for /proc/stats info.</div><div class="ttdef"><b>Definition:</b> <a href="cputracker_8h_source.html#l00030">cputracker.h:30</a></div></div>
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