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 <span id="projectnumber">0.9.3</span>
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<div class="title">tsemaphore.c</div> </div>
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<a href="tsemaphore_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> </div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <pthread.h></span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <sys/time.h></span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <errno.h></span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include "<a class="code" href="tsemaphore_8h.html">tsemaphore.h</a>"</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include "<a class="code" href="omx__comp__debug__levels_8h.html">omx_comp_debug_levels.h</a>"</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div>
<div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="tsemaphore_8h.html#a843d7acecc3a7ec53a66d1a40d3c048c"> 39</a></span> <a class="code" href="omx__base__component_8h.html#a665038e768ece73b351ebc4696735cfc">OSCL_EXPORT_REF</a> <span class="keywordtype">int</span> <a class="code" href="tsemaphore_8c.html#a843d7acecc3a7ec53a66d1a40d3c048c">tsem_init</a>(<a class="code" href="structtsem__t.html">tsem_t</a>* tsem, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> val) {</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  i = pthread_cond_init(&tsem-><a class="code" href="structtsem__t.html#a3013d6bcf874430edee6904d70c8b5bc">condition</a>, NULL);</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">if</span> (i!=0) {</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordflow">return</span> -1;</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  }</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  i = pthread_mutex_init(&tsem-><a class="code" href="structtsem__t.html#a231c4ba32d44e5d938e2470d7ea564e2">mutex</a>, NULL);</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">if</span> (i!=0) {</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">return</span> -1;</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  }</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  tsem-><a class="code" href="structtsem__t.html#a5bdb9e94a6a996506edc41f7ddd823c4">semval</a> = val;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> }</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div>
<div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="tsemaphore_8h.html#a09db4b1f30a093b8c49d8f7de9159415"> 57</a></span> <a class="code" href="omx__base__component_8h.html#a665038e768ece73b351ebc4696735cfc">OSCL_EXPORT_REF</a> <span class="keywordtype">void</span> <a class="code" href="tsemaphore_8c.html#a09db4b1f30a093b8c49d8f7de9159415">tsem_deinit</a>(<a class="code" href="structtsem__t.html">tsem_t</a>* tsem) {</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  pthread_cond_destroy(&tsem-><a class="code" href="structtsem__t.html#a3013d6bcf874430edee6904d70c8b5bc">condition</a>);</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  pthread_mutex_destroy(&tsem-><a class="code" href="structtsem__t.html#a231c4ba32d44e5d938e2470d7ea564e2">mutex</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> </div>
<div class="line"><a name="l00069"></a><span class="lineno"><a class="line" href="tsemaphore_8h.html#a495e7eccd661193aba6801b9ae4a3fd7"> 69</a></span> <a class="code" href="omx__base__component_8h.html#a665038e768ece73b351ebc4696735cfc">OSCL_EXPORT_REF</a> <span class="keywordtype">int</span> <a class="code" href="tsemaphore_8c.html#a495e7eccd661193aba6801b9ae4a3fd7">tsem_timed_down</a>(<a class="code" href="structtsem__t.html">tsem_t</a>* tsem, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> milliSecondsDelay) {</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordtype">int</span> <a class="code" href="omxvolcontroltest_8c.html#a756067b481e3ea442bfda1a27ce0a901">err</a> = 0;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keyword">struct </span>timespec final_time;</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keyword">struct </span>timeval currentTime;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordtype">long</span> <span class="keywordtype">int</span> microdelay;</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  gettimeofday(&currentTime, NULL);</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  microdelay = ((milliSecondsDelay * 1000 + currentTime.tv_usec));</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  final_time.tv_sec = currentTime.tv_sec + (microdelay / 1000000);</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  final_time.tv_nsec = (microdelay % 1000000) * 1000;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  pthread_mutex_lock(&tsem-><a class="code" href="structtsem__t.html#a231c4ba32d44e5d938e2470d7ea564e2">mutex</a>);</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">while</span> (tsem-><a class="code" href="structtsem__t.html#a5bdb9e94a6a996506edc41f7ddd823c4">semval</a> == 0) {</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  err = pthread_cond_timedwait(&tsem-><a class="code" href="structtsem__t.html#a3013d6bcf874430edee6904d70c8b5bc">condition</a>, &tsem-><a class="code" href="structtsem__t.html#a231c4ba32d44e5d938e2470d7ea564e2">mutex</a>, &final_time);</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">if</span> (err != 0) {</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  tsem-><a class="code" href="structtsem__t.html#a5bdb9e94a6a996506edc41f7ddd823c4">semval</a>--;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  }</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  }</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  tsem-><a class="code" href="structtsem__t.html#a5bdb9e94a6a996506edc41f7ddd823c4">semval</a>--;</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  pthread_mutex_unlock(&tsem-><a class="code" href="structtsem__t.html#a231c4ba32d44e5d938e2470d7ea564e2">mutex</a>);</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">return</span> <a class="code" href="omxvolcontroltest_8c.html#a756067b481e3ea442bfda1a27ce0a901">err</a>;</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> }</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div>
<div class="line"><a name="l00097"></a><span class="lineno"><a class="line" href="tsemaphore_8h.html#ac3aff783e32ae9d0736ba38d76e62be1"> 97</a></span> <a class="code" href="omx__base__component_8h.html#a665038e768ece73b351ebc4696735cfc">OSCL_EXPORT_REF</a> <span class="keywordtype">void</span> <a class="code" href="tsemaphore_8c.html#ac3aff783e32ae9d0736ba38d76e62be1">tsem_down</a>(<a class="code" href="structtsem__t.html">tsem_t</a>* tsem) {</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  pthread_mutex_lock(&tsem-><a class="code" href="structtsem__t.html#a231c4ba32d44e5d938e2470d7ea564e2">mutex</a>);</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">while</span> (tsem-><a class="code" href="structtsem__t.html#a5bdb9e94a6a996506edc41f7ddd823c4">semval</a> == 0) {</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  pthread_cond_wait(&tsem-><a class="code" href="structtsem__t.html#a3013d6bcf874430edee6904d70c8b5bc">condition</a>, &tsem-><a class="code" href="structtsem__t.html#a231c4ba32d44e5d938e2470d7ea564e2">mutex</a>);</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  }</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  tsem-><a class="code" href="structtsem__t.html#a5bdb9e94a6a996506edc41f7ddd823c4">semval</a>--;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  pthread_mutex_unlock(&tsem-><a class="code" href="structtsem__t.html#a231c4ba32d44e5d938e2470d7ea564e2">mutex</a>);</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> }</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div>
<div class="line"><a name="l00110"></a><span class="lineno"><a class="line" href="tsemaphore_8h.html#a64d778846c9eb62d0d67db26bbdc9cf0"> 110</a></span> <a class="code" href="omx__base__component_8h.html#a665038e768ece73b351ebc4696735cfc">OSCL_EXPORT_REF</a> <span class="keywordtype">void</span> <a class="code" href="tsemaphore_8c.html#a64d778846c9eb62d0d67db26bbdc9cf0">tsem_up</a>(<a class="code" href="structtsem__t.html">tsem_t</a>* tsem) {</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  pthread_mutex_lock(&tsem-><a class="code" href="structtsem__t.html#a231c4ba32d44e5d938e2470d7ea564e2">mutex</a>);</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  tsem-><a class="code" href="structtsem__t.html#a5bdb9e94a6a996506edc41f7ddd823c4">semval</a>++;</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  pthread_cond_signal(&tsem-><a class="code" href="structtsem__t.html#a3013d6bcf874430edee6904d70c8b5bc">condition</a>);</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  pthread_mutex_unlock(&tsem-><a class="code" href="structtsem__t.html#a231c4ba32d44e5d938e2470d7ea564e2">mutex</a>);</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> }</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div>
<div class="line"><a name="l00121"></a><span class="lineno"><a class="line" href="tsemaphore_8h.html#afb71917f12e14f8fffebce5735091f81"> 121</a></span> <a class="code" href="omx__base__component_8h.html#a665038e768ece73b351ebc4696735cfc">OSCL_EXPORT_REF</a> <span class="keywordtype">void</span> <a class="code" href="tsemaphore_8c.html#afb71917f12e14f8fffebce5735091f81">tsem_reset</a>(<a class="code" href="structtsem__t.html">tsem_t</a>* tsem) {</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  pthread_mutex_lock(&tsem-><a class="code" href="structtsem__t.html#a231c4ba32d44e5d938e2470d7ea564e2">mutex</a>);</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  tsem-><a class="code" href="structtsem__t.html#a5bdb9e94a6a996506edc41f7ddd823c4">semval</a>=0;</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  pthread_mutex_unlock(&tsem-><a class="code" href="structtsem__t.html#a231c4ba32d44e5d938e2470d7ea564e2">mutex</a>);</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> }</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div>
<div class="line"><a name="l00131"></a><span class="lineno"><a class="line" href="tsemaphore_8h.html#afe09b0908017f9ec0e1be7d2dec04f9f"> 131</a></span> <a class="code" href="omx__base__component_8h.html#a665038e768ece73b351ebc4696735cfc">OSCL_EXPORT_REF</a> <span class="keywordtype">void</span> <a class="code" href="tsemaphore_8c.html#afe09b0908017f9ec0e1be7d2dec04f9f">tsem_wait</a>(<a class="code" href="structtsem__t.html">tsem_t</a>* tsem) {</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  pthread_mutex_lock(&tsem-><a class="code" href="structtsem__t.html#a231c4ba32d44e5d938e2470d7ea564e2">mutex</a>);</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  pthread_cond_wait(&tsem-><a class="code" href="structtsem__t.html#a3013d6bcf874430edee6904d70c8b5bc">condition</a>, &tsem-><a class="code" href="structtsem__t.html#a231c4ba32d44e5d938e2470d7ea564e2">mutex</a>);</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  pthread_mutex_unlock(&tsem-><a class="code" href="structtsem__t.html#a231c4ba32d44e5d938e2470d7ea564e2">mutex</a>);</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> }</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> </div>
<div class="line"><a name="l00141"></a><span class="lineno"><a class="line" href="tsemaphore_8h.html#a3fc80b2d508d6fd0428268a0279157d3"> 141</a></span> <a class="code" href="omx__base__component_8h.html#a665038e768ece73b351ebc4696735cfc">OSCL_EXPORT_REF</a> <span class="keywordtype">void</span> <a class="code" href="tsemaphore_8c.html#a3fc80b2d508d6fd0428268a0279157d3">tsem_signal</a>(<a class="code" href="structtsem__t.html">tsem_t</a>* tsem) {</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  pthread_mutex_lock(&tsem-><a class="code" href="structtsem__t.html#a231c4ba32d44e5d938e2470d7ea564e2">mutex</a>);</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  pthread_cond_signal(&tsem-><a class="code" href="structtsem__t.html#a3013d6bcf874430edee6904d70c8b5bc">condition</a>);</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  pthread_mutex_unlock(&tsem-><a class="code" href="structtsem__t.html#a231c4ba32d44e5d938e2470d7ea564e2">mutex</a>);</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> }</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> </div>
<div class="ttc" id="tsemaphore_8c_html_afe09b0908017f9ec0e1be7d2dec04f9f"><div class="ttname"><a href="tsemaphore_8c.html#afe09b0908017f9ec0e1be7d2dec04f9f">tsem_wait</a></div><div class="ttdeci">void tsem_wait(tsem_t *tsem)</div><div class="ttdef"><b>Definition:</b> <a href="tsemaphore_8c_source.html#l00131">tsemaphore.c:131</a></div></div>
<div class="ttc" id="tsemaphore_8c_html_a3fc80b2d508d6fd0428268a0279157d3"><div class="ttname"><a href="tsemaphore_8c.html#a3fc80b2d508d6fd0428268a0279157d3">tsem_signal</a></div><div class="ttdeci">void tsem_signal(tsem_t *tsem)</div><div class="ttdef"><b>Definition:</b> <a href="tsemaphore_8c_source.html#l00141">tsemaphore.c:141</a></div></div>
<div class="ttc" id="omx__comp__debug__levels_8h_html"><div class="ttname"><a href="omx__comp__debug__levels_8h.html">omx_comp_debug_levels.h</a></div></div>
<div class="ttc" id="structtsem__t_html"><div class="ttname"><a href="structtsem__t.html">tsem_t</a></div><div class="ttdef"><b>Definition:</b> <a href="tsemaphore_8h_source.html#l00038">tsemaphore.h:38</a></div></div>
<div class="ttc" id="tsemaphore_8c_html_a64d778846c9eb62d0d67db26bbdc9cf0"><div class="ttname"><a href="tsemaphore_8c.html#a64d778846c9eb62d0d67db26bbdc9cf0">tsem_up</a></div><div class="ttdeci">void tsem_up(tsem_t *tsem)</div><div class="ttdef"><b>Definition:</b> <a href="tsemaphore_8c_source.html#l00110">tsemaphore.c:110</a></div></div>
<div class="ttc" id="structtsem__t_html_a5bdb9e94a6a996506edc41f7ddd823c4"><div class="ttname"><a href="structtsem__t.html#a5bdb9e94a6a996506edc41f7ddd823c4">tsem_t::semval</a></div><div class="ttdeci">unsigned int semval</div><div class="ttdef"><b>Definition:</b> <a href="tsemaphore_8h_source.html#l00041">tsemaphore.h:41</a></div></div>
<div class="ttc" id="tsemaphore_8c_html_a495e7eccd661193aba6801b9ae4a3fd7"><div class="ttname"><a href="tsemaphore_8c.html#a495e7eccd661193aba6801b9ae4a3fd7">tsem_timed_down</a></div><div class="ttdeci">int tsem_timed_down(tsem_t *tsem, unsigned int milliSecondsDelay)</div><div class="ttdef"><b>Definition:</b> <a href="tsemaphore_8c_source.html#l00069">tsemaphore.c:69</a></div></div>
<div class="ttc" id="tsemaphore_8c_html_ac3aff783e32ae9d0736ba38d76e62be1"><div class="ttname"><a href="tsemaphore_8c.html#ac3aff783e32ae9d0736ba38d76e62be1">tsem_down</a></div><div class="ttdeci">void tsem_down(tsem_t *tsem)</div><div class="ttdef"><b>Definition:</b> <a href="tsemaphore_8c_source.html#l00097">tsemaphore.c:97</a></div></div>
<div class="ttc" id="omx__base__component_8h_html_a665038e768ece73b351ebc4696735cfc"><div class="ttname"><a href="omx__base__component_8h.html#a665038e768ece73b351ebc4696735cfc">OSCL_EXPORT_REF</a></div><div class="ttdeci">#define OSCL_EXPORT_REF</div><div class="ttdef"><b>Definition:</b> <a href="omx__base__component_8h_source.html#l00041">omx_base_component.h:41</a></div></div>
<div class="ttc" id="tsemaphore_8c_html_afb71917f12e14f8fffebce5735091f81"><div class="ttname"><a href="tsemaphore_8c.html#afb71917f12e14f8fffebce5735091f81">tsem_reset</a></div><div class="ttdeci">void tsem_reset(tsem_t *tsem)</div><div class="ttdef"><b>Definition:</b> <a href="tsemaphore_8c_source.html#l00121">tsemaphore.c:121</a></div></div>
<div class="ttc" id="tsemaphore_8h_html"><div class="ttname"><a href="tsemaphore_8h.html">tsemaphore.h</a></div></div>
<div class="ttc" id="omxvolcontroltest_8c_html_a756067b481e3ea442bfda1a27ce0a901"><div class="ttname"><a href="omxvolcontroltest_8c.html#a756067b481e3ea442bfda1a27ce0a901">err</a></div><div class="ttdeci">OMX_ERRORTYPE err</div><div class="ttdef"><b>Definition:</b> <a href="omxvolcontroltest_8c_source.html#l00034">omxvolcontroltest.c:34</a></div></div>
<div class="ttc" id="tsemaphore_8c_html_a09db4b1f30a093b8c49d8f7de9159415"><div class="ttname"><a href="tsemaphore_8c.html#a09db4b1f30a093b8c49d8f7de9159415">tsem_deinit</a></div><div class="ttdeci">void tsem_deinit(tsem_t *tsem)</div><div class="ttdef"><b>Definition:</b> <a href="tsemaphore_8c_source.html#l00057">tsemaphore.c:57</a></div></div>
<div class="ttc" id="tsemaphore_8c_html_a843d7acecc3a7ec53a66d1a40d3c048c"><div class="ttname"><a href="tsemaphore_8c.html#a843d7acecc3a7ec53a66d1a40d3c048c">tsem_init</a></div><div class="ttdeci">int tsem_init(tsem_t *tsem, unsigned int val)</div><div class="ttdef"><b>Definition:</b> <a href="tsemaphore_8c_source.html#l00039">tsemaphore.c:39</a></div></div>
<div class="ttc" id="structtsem__t_html_a231c4ba32d44e5d938e2470d7ea564e2"><div class="ttname"><a href="structtsem__t.html#a231c4ba32d44e5d938e2470d7ea564e2">tsem_t::mutex</a></div><div class="ttdeci">pthread_mutex_t mutex</div><div class="ttdef"><b>Definition:</b> <a href="tsemaphore_8h_source.html#l00040">tsemaphore.h:40</a></div></div>
<div class="ttc" id="structtsem__t_html_a3013d6bcf874430edee6904d70c8b5bc"><div class="ttname"><a href="structtsem__t.html#a3013d6bcf874430edee6904d70c8b5bc">tsem_t::condition</a></div><div class="ttdeci">pthread_cond_t condition</div><div class="ttdef"><b>Definition:</b> <a href="tsemaphore_8h_source.html#l00039">tsemaphore.h:39</a></div></div>
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