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| <div class="title">InstructionCounter Class Reference</div> </div> |
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| <div class="contents"> |
| |
| <p>Implementation of an instrument to count executed CPU instructions. |
| <a href="classarm__compute_1_1test_1_1benchmark_1_1_instruction_counter.xhtml#details">More...</a></p> |
| |
| <p><code>#include <<a class="el" href="_p_m_u_counter_8h_source.xhtml">PMUCounter.h</a>></code></p> |
| <div class="dynheader"> |
| Collaboration diagram for InstructionCounter:</div> |
| <div class="dyncontent"> |
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| <table class="memberdecls"> |
| <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a> |
| Public Member Functions</h2></td></tr> |
| <tr class="memitem:ae93433b7fa2c0d3ac4d3f8732ab079b0"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instruction_counter.xhtml#ae93433b7fa2c0d3ac4d3f8732ab079b0">InstructionCounter</a> ()</td></tr> |
| <tr class="memdesc:ae93433b7fa2c0d3ac4d3f8732ab079b0"><td class="mdescLeft"> </td><td class="mdescRight">Initialise the instruction counter. <a href="#ae93433b7fa2c0d3ac4d3f8732ab079b0">More...</a><br /></td></tr> |
| <tr class="separator:ae93433b7fa2c0d3ac4d3f8732ab079b0"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a501ef37fef441a0a6a8ea8b8e30a7181"><td class="memItemLeft" align="right" valign="top">std::string </td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instruction_counter.xhtml#a501ef37fef441a0a6a8ea8b8e30a7181">id</a> () const override</td></tr> |
| <tr class="memdesc:a501ef37fef441a0a6a8ea8b8e30a7181"><td class="mdescLeft"> </td><td class="mdescRight">Identifier for the instrument. <a href="#a501ef37fef441a0a6a8ea8b8e30a7181">More...</a><br /></td></tr> |
| <tr class="separator:a501ef37fef441a0a6a8ea8b8e30a7181"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a5d5d9ebd12cd3a7d268bc98a3fc7bf97"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instruction_counter.xhtml#a5d5d9ebd12cd3a7d268bc98a3fc7bf97">start</a> () override</td></tr> |
| <tr class="memdesc:a5d5d9ebd12cd3a7d268bc98a3fc7bf97"><td class="mdescLeft"> </td><td class="mdescRight">Start measuring. <a href="#a5d5d9ebd12cd3a7d268bc98a3fc7bf97">More...</a><br /></td></tr> |
| <tr class="separator:a5d5d9ebd12cd3a7d268bc98a3fc7bf97"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:ab3536e22848ce87b16a9b96d6d824d45"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instruction_counter.xhtml#ab3536e22848ce87b16a9b96d6d824d45">stop</a> () override</td></tr> |
| <tr class="memdesc:ab3536e22848ce87b16a9b96d6d824d45"><td class="mdescLeft"> </td><td class="mdescRight">Stop measuring. <a href="#ab3536e22848ce87b16a9b96d6d824d45">More...</a><br /></td></tr> |
| <tr class="separator:ab3536e22848ce87b16a9b96d6d824d45"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a4c6dc9d669d56a96f44c30075bda5f04"><td class="memItemLeft" align="right" valign="top">std::unique_ptr< <a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instrument_1_1_i_measurement.xhtml">Instrument::IMeasurement</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instruction_counter.xhtml#a4c6dc9d669d56a96f44c30075bda5f04">get_measurement</a> () const override</td></tr> |
| <tr class="memdesc:a4c6dc9d669d56a96f44c30075bda5f04"><td class="mdescLeft"> </td><td class="mdescRight">Return the latest measurement. <a href="#a4c6dc9d669d56a96f44c30075bda5f04">More...</a><br /></td></tr> |
| <tr class="separator:a4c6dc9d669d56a96f44c30075bda5f04"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="inherit_header pub_methods_classarm__compute_1_1test_1_1benchmark_1_1_instrument"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classarm__compute_1_1test_1_1benchmark_1_1_instrument')"><img src="closed.png" alt="-"/> Public Member Functions inherited from <a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instrument.xhtml">Instrument</a></td></tr> |
| <tr class="memitem:a44dfdf6c9c53e1b5c5eddfc58c31dc54 inherit pub_methods_classarm__compute_1_1test_1_1benchmark_1_1_instrument"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instrument.xhtml#a44dfdf6c9c53e1b5c5eddfc58c31dc54">Instrument</a> ()=default</td></tr> |
| <tr class="separator:a44dfdf6c9c53e1b5c5eddfc58c31dc54 inherit pub_methods_classarm__compute_1_1test_1_1benchmark_1_1_instrument"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:ac92db65cbe174915234b0d99b3ad4be7 inherit pub_methods_classarm__compute_1_1test_1_1benchmark_1_1_instrument"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instrument.xhtml#ac92db65cbe174915234b0d99b3ad4be7">Instrument</a> (const <a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instrument.xhtml">Instrument</a> &)=default</td></tr> |
| <tr class="separator:ac92db65cbe174915234b0d99b3ad4be7 inherit pub_methods_classarm__compute_1_1test_1_1benchmark_1_1_instrument"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:adda867124fd5c093788f96cb2eaf67cd inherit pub_methods_classarm__compute_1_1test_1_1benchmark_1_1_instrument"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instrument.xhtml#adda867124fd5c093788f96cb2eaf67cd">Instrument</a> (<a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instrument.xhtml">Instrument</a> &&)=default</td></tr> |
| <tr class="separator:adda867124fd5c093788f96cb2eaf67cd inherit pub_methods_classarm__compute_1_1test_1_1benchmark_1_1_instrument"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:ae4a6c66ea355204cca47490247b91f5f inherit pub_methods_classarm__compute_1_1test_1_1benchmark_1_1_instrument"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instrument.xhtml">Instrument</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instrument.xhtml#ae4a6c66ea355204cca47490247b91f5f">operator=</a> (const <a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instrument.xhtml">Instrument</a> &)=default</td></tr> |
| <tr class="separator:ae4a6c66ea355204cca47490247b91f5f inherit pub_methods_classarm__compute_1_1test_1_1benchmark_1_1_instrument"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a550047da2682a06765be837ae570e542 inherit pub_methods_classarm__compute_1_1test_1_1benchmark_1_1_instrument"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instrument.xhtml">Instrument</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instrument.xhtml#a550047da2682a06765be837ae570e542">operator=</a> (<a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instrument.xhtml">Instrument</a> &&)=default</td></tr> |
| <tr class="separator:a550047da2682a06765be837ae570e542 inherit pub_methods_classarm__compute_1_1test_1_1benchmark_1_1_instrument"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a7bd8541cf37e6c439d4a6bf7296437a2 inherit pub_methods_classarm__compute_1_1test_1_1benchmark_1_1_instrument"><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instrument.xhtml#a7bd8541cf37e6c439d4a6bf7296437a2">~Instrument</a> ()=default</td></tr> |
| <tr class="separator:a7bd8541cf37e6c439d4a6bf7296437a2 inherit pub_methods_classarm__compute_1_1test_1_1benchmark_1_1_instrument"><td class="memSeparator" colspan="2"> </td></tr> |
| </table> |
| <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2> |
| <div class="textblock"><p>Implementation of an instrument to count executed CPU instructions. </p> |
| |
| <p>Definition at line <a class="el" href="_p_m_u_counter_8h_source.xhtml#l00053">53</a> of file <a class="el" href="_p_m_u_counter_8h_source.xhtml">PMUCounter.h</a>.</p> |
| </div><h2 class="groupheader">Constructor & Destructor Documentation</h2> |
| <a class="anchor" id="ae93433b7fa2c0d3ac4d3f8732ab079b0"></a> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname"><a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instruction_counter.xhtml">InstructionCounter</a> </td> |
| <td>(</td> |
| <td class="paramname"></td><td>)</td> |
| <td></td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| |
| <p>Initialise the instruction counter. </p> |
| |
| <p>Definition at line <a class="el" href="_p_m_u_counter_8cpp_source.xhtml#l00095">95</a> of file <a class="el" href="_p_m_u_counter_8cpp_source.xhtml">PMUCounter.cpp</a>.</p> |
| <div class="fragment"><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> {</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keyword">const</span> pid_t pid = getpid();</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keyword">struct </span>perf_event_attr perf_config</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  {</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>  memset(&perf_config, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> perf_event_attr));</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  perf_config.config = PERF_COUNT_HW_INSTRUCTIONS;</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  perf_config.size = <span class="keyword">sizeof</span>(<span class="keyword">struct </span>perf_event_attr);</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  perf_config.type = PERF_TYPE_HARDWARE;</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="comment">// The inherit bit specifies that this counter should count events of child</span></div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="comment">// tasks as well as the task specified</span></div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  perf_config.inherit = 1;</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="comment">// Enables saving of event counts on context switch for inherited tasks</span></div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  perf_config.inherit_stat = 1;</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  _fd = syscall(__NR_perf_event_open, &perf_config, pid, -1, -1, 0);</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">if</span>(_fd < 0)</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  {</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"perf_event_open for instructions failed"</span>);</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  }</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span> }</div></div><!-- fragment --> |
| </div> |
| </div> |
| <h2 class="groupheader">Member Function Documentation</h2> |
| <a class="anchor" id="a4c6dc9d669d56a96f44c30075bda5f04"></a> |
| <div class="memitem"> |
| <div class="memproto"> |
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| <td class="mlabels-left"> |
| <table class="memname"> |
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| <td class="memname">std::unique_ptr< <a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instrument_1_1_i_measurement.xhtml">Instrument::IMeasurement</a> > get_measurement </td> |
| <td>(</td> |
| <td class="paramname"></td><td>)</td> |
| <td> const</td> |
| </tr> |
| </table> |
| </td> |
| <td class="mlabels-right"> |
| <span class="mlabels"><span class="mlabel">override</span><span class="mlabel">virtual</span></span> </td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| |
| <p>Return the latest measurement. </p> |
| |
| <p>Implements <a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instrument.xhtml#a303d89af0281be803df4f5569ee8d420">Instrument</a>.</p> |
| |
| <p>Definition at line <a class="el" href="_p_m_u_counter_8cpp_source.xhtml#l00138">138</a> of file <a class="el" href="_p_m_u_counter_8cpp_source.xhtml">PMUCounter.cpp</a>.</p> |
| <div class="fragment"><div class="line"><a name="l00139"></a><span class="lineno"> 139</span> {</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordflow">return</span> std::unique_ptr<Instrument::IMeasurement>(<span class="keyword">new</span> Instrument::Measurement<long long>(_instructions));</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span> }</div></div><!-- fragment --> |
| </div> |
| </div> |
| <a class="anchor" id="a501ef37fef441a0a6a8ea8b8e30a7181"></a> |
| <div class="memitem"> |
| <div class="memproto"> |
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| <td class="mlabels-left"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">std::string id </td> |
| <td>(</td> |
| <td class="paramname"></td><td>)</td> |
| <td> const</td> |
| </tr> |
| </table> |
| </td> |
| <td class="mlabels-right"> |
| <span class="mlabels"><span class="mlabel">override</span><span class="mlabel">virtual</span></span> </td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| |
| <p>Identifier for the instrument. </p> |
| |
| <p>Implements <a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instrument.xhtml#a93697d33dc9325ba180a9a2a8ade6937">Instrument</a>.</p> |
| |
| <p>Definition at line <a class="el" href="_p_m_u_counter_8cpp_source.xhtml#l00121">121</a> of file <a class="el" href="_p_m_u_counter_8cpp_source.xhtml">PMUCounter.cpp</a>.</p> |
| <div class="fragment"><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> {</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keywordflow">return</span> <span class="stringliteral">"Instruction Counter"</span>;</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> }</div></div><!-- fragment --> |
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| <a class="anchor" id="a5d5d9ebd12cd3a7d268bc98a3fc7bf97"></a> |
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| <td class="memname">void start </td> |
| <td>(</td> |
| <td class="paramname"></td><td>)</td> |
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| <td class="mlabels-right"> |
| <span class="mlabels"><span class="mlabel">override</span><span class="mlabel">virtual</span></span> </td> |
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| |
| <p>Start measuring. </p> |
| |
| <p>Implements <a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instrument.xhtml#ac0ae5f26cd2001d772aed9d2ea97d41c">Instrument</a>.</p> |
| |
| <p>Definition at line <a class="el" href="_p_m_u_counter_8cpp_source.xhtml#l00126">126</a> of file <a class="el" href="_p_m_u_counter_8cpp_source.xhtml">PMUCounter.cpp</a>.</p> |
| <div class="fragment"><div class="line"><a name="l00127"></a><span class="lineno"> 127</span> {</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  ioctl(_fd, PERF_EVENT_IOC_RESET, 0);</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  ioctl(_fd, PERF_EVENT_IOC_ENABLE, 0);</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> }</div></div><!-- fragment --> |
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| <td class="memname">void stop </td> |
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| <td class="paramname"></td><td>)</td> |
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| <td class="mlabels-right"> |
| <span class="mlabels"><span class="mlabel">override</span><span class="mlabel">virtual</span></span> </td> |
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| </div><div class="memdoc"> |
| |
| <p>Stop measuring. </p> |
| |
| <p>Implements <a class="el" href="classarm__compute_1_1test_1_1benchmark_1_1_instrument.xhtml#a0efff8623a2fb79dad94a96dcf16d966">Instrument</a>.</p> |
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| <p>Definition at line <a class="el" href="_p_m_u_counter_8cpp_source.xhtml#l00132">132</a> of file <a class="el" href="_p_m_u_counter_8cpp_source.xhtml">PMUCounter.cpp</a>.</p> |
| <div class="fragment"><div class="line"><a name="l00133"></a><span class="lineno"> 133</span> {</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  ioctl(_fd, PERF_EVENT_IOC_DISABLE, 0);</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  read(_fd, &_instructions, <span class="keyword">sizeof</span>(_instructions));</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span> }</div></div><!-- fragment --> |
| </div> |
| </div> |
| <hr/>The documentation for this class was generated from the following files:<ul> |
| <li>tests/benchmark/<a class="el" href="_p_m_u_counter_8h_source.xhtml">PMUCounter.h</a></li> |
| <li>tests/benchmark/<a class="el" href="_p_m_u_counter_8cpp_source.xhtml">PMUCounter.cpp</a></li> |
| </ul> |
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| <li class="footer">Generated on Fri Jun 23 2017 15:44:35 for Compute Library by |
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| <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.11 </li> |
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