-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathreader_8c_source.html
More file actions
131 lines (129 loc) · 10.9 KB
/
reader_8c_source.html
File metadata and controls
131 lines (129 loc) · 10.9 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=11"/>
<meta name="generator" content="Doxygen 1.9.6"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>CPU Usage Tracker: reader.c Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/searchdata.js"></script>
<script type="text/javascript" src="search/search.js"></script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr id="projectrow">
<td id="projectalign">
<div id="projectname">CPU Usage Tracker<span id="projectnumber"> 1.0</span>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.9.6 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&dn=expat.txt MIT */
var searchBox = new SearchBox("searchBox", "search/",'.html');
/* @license-end */
</script>
<script type="text/javascript" src="menudata.js"></script>
<script type="text/javascript" src="menu.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&dn=expat.txt MIT */
$(function() {
initMenu('',true,false,'search.php','Search');
$(document).ready(function() { init_search(); });
});
/* @license-end */
</script>
<div id="main-nav"></div>
</div><!-- top -->
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<div id="MSearchResults">
<div class="SRPage">
<div id="SRIndex">
<div id="SRResults"></div>
<div class="SRStatus" id="Loading">Loading...</div>
<div class="SRStatus" id="Searching">Searching...</div>
<div class="SRStatus" id="NoMatches">No Matches</div>
</div>
</div>
</div>
</div>
<div class="header">
<div class="headertitle"><div class="title">reader.c</div></div>
</div><!--header-->
<div class="contents">
<a href="reader_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 "reader.h"</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span> </div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="keyword">static</span> <span class="keywordtype">int</span> get_proc_stats(<span class="keyword">struct</span> <a class="code hl_struct" href="structproc__stat.html">proc_stat</a> *stats, <span class="keywordtype">int</span> threads) {</div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span> FILE *file = fopen(<span class="stringliteral">"/proc/stat"</span>, <span class="stringliteral">"r"</span>);</div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span> <span class="keywordtype">char</span> line[1024];</div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> thread = 0; thread < threads; thread++) {</div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span> <span class="keywordflow">if</span> (fgets(line, <span class="keyword">sizeof</span>(line), file) == NULL ||</div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span> strncmp(line, <span class="stringliteral">"cpu"</span>, 3) != 0) {</div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> fclose(file);</div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span> <span class="keywordflow">return</span> -1;</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> sscanf(line, <span class="stringliteral">"%s %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu"</span>,</div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span> stats[thread].name, &stats[thread].user, &stats[thread].nice,</div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span> &stats[thread].system, &stats[thread].idle, &stats[thread].iowait,</div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span> &stats[thread].irq, &stats[thread].softirq, &stats[thread].steal,</div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span> &stats[thread].guest, &stats[thread].guest_nice);</div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> }</div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> fclose(file);</div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> <span class="keywordflow">return</span> 0;</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> </div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="keywordtype">void</span> reader_test(<span class="keywordtype">void</span>) {</div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">struct </span><a class="code hl_struct" href="structproc__stat.html">proc_stat</a> stats;</div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> <span class="keywordflow">if</span> (get_proc_stats(&stats, 1) == 0) {</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> assert(strncmp(stats.name, <span class="stringliteral">"cpu"</span>, 3) == 0);</div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> }</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span>}</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> </div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="keywordtype">void</span> *reader(<span class="keywordtype">void</span> *arg) {</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> (void)arg;</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> <span class="keywordflow">while</span> (1) {</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> <a class="code hl_function" href="cputracker_8c.html#ac99b6069bf629214ce6258902739d613">notify_watchdog</a>(Reader);</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> sem_wait(&g_dataLeftSpaceSemaphore);</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> pthread_mutex_lock(&g_dataBufferMutex);</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> </div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> <span class="keywordflow">if</span> (get_proc_stats(<a class="code hl_function" href="cputracker_8c.html#a6d7b4993bb9144e4cab9f9c7420c996a">get_item_from_data_buffer</a>(), g_nproc) == -1) {</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> pthread_mutex_unlock(&g_dataBufferMutex);</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> sem_post(&g_dataLeftSpaceSemaphore);</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> <span class="keywordflow">continue</span>;</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> }</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> </div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> pthread_mutex_unlock(&g_dataBufferMutex);</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> sem_post(&g_dataFilledSpaceSemaphore);</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> usleep(READ_DELAY);</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> }</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span>}</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_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="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>
</div><!-- fragment --></div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated by <a href="https://www.doxygen.org/index.html"><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.9.6
</small></address>
</body>
</html>