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<h1>tick_count.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> Copyright 2005-2010 Intel Corporation. All Rights Reserved.</span>
<a name="l00003"></a>00003 <span class="comment"></span>
<a name="l00004"></a>00004 <span class="comment"> The source code contained or described herein and all documents related</span>
<a name="l00005"></a>00005 <span class="comment"> to the source code ("Material") are owned by Intel Corporation or its</span>
<a name="l00006"></a>00006 <span class="comment"> suppliers or licensors. Title to the Material remains with Intel</span>
<a name="l00007"></a>00007 <span class="comment"> Corporation or its suppliers and licensors. The Material is protected</span>
<a name="l00008"></a>00008 <span class="comment"> by worldwide copyright laws and treaty provisions. No part of the</span>
<a name="l00009"></a>00009 <span class="comment"> Material may be used, copied, reproduced, modified, published, uploaded,</span>
<a name="l00010"></a>00010 <span class="comment"> posted, transmitted, distributed, or disclosed in any way without</span>
<a name="l00011"></a>00011 <span class="comment"> Intel's prior express written permission.</span>
<a name="l00012"></a>00012 <span class="comment"></span>
<a name="l00013"></a>00013 <span class="comment"> No license under any patent, copyright, trade secret or other</span>
<a name="l00014"></a>00014 <span class="comment"> intellectual property right is granted to or conferred upon you by</span>
<a name="l00015"></a>00015 <span class="comment"> disclosure or delivery of the Materials, either expressly, by</span>
<a name="l00016"></a>00016 <span class="comment"> implication, inducement, estoppel or otherwise. Any license under such</span>
<a name="l00017"></a>00017 <span class="comment"> intellectual property rights must be express and approved by Intel in</span>
<a name="l00018"></a>00018 <span class="comment"> writing.</span>
<a name="l00019"></a>00019 <span class="comment">*/</span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="preprocessor">#ifndef __TBB_tick_count_H</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span><span class="preprocessor">#define __TBB_tick_count_H</span>
<a name="l00023"></a>00023 <span class="preprocessor"></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include "tbb_stddef.h"</span>
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="preprocessor">#if _WIN32||_WIN64</span>
<a name="l00027"></a>00027 <span class="preprocessor"></span><span class="preprocessor">#include <windows.h></span>
<a name="l00028"></a>00028 <span class="preprocessor">#elif __linux__</span>
<a name="l00029"></a>00029 <span class="preprocessor"></span><span class="preprocessor">#include <ctime></span>
<a name="l00030"></a>00030 <span class="preprocessor">#else </span><span class="comment">/* generic Unix */</span>
<a name="l00031"></a>00031 <span class="preprocessor">#include <sys/time.h></span>
<a name="l00032"></a>00032 <span class="preprocessor">#endif </span><span class="comment">/* (choice of OS) */</span>
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="keyword">namespace </span>tbb {
<a name="l00035"></a>00035
<a name="l00037"></a>00037
<a name="l00038"></a><a class="code" href="a00210.html">00038</a> <span class="keyword">class </span><a class="code" href="a00210.html">tick_count</a> {
<a name="l00039"></a>00039 <span class="keyword">public</span>:
<a name="l00041"></a><a class="code" href="a00211.html">00041</a> <span class="keyword">class </span><a class="code" href="a00211.html">interval_t</a> {
<a name="l00042"></a>00042 <span class="keywordtype">long</span> <span class="keywordtype">long</span> value;
<a name="l00043"></a>00043 <span class="keyword">explicit</span> <a class="code" href="a00211.html#75a9a0949f8a8a84d6758835f1b48dad">interval_t</a>( <span class="keywordtype">long</span> <span class="keywordtype">long</span> value_ ) : value(value_) {}
<a name="l00044"></a>00044 <span class="keyword">public</span>:
<a name="l00046"></a><a class="code" href="a00211.html#75a9a0949f8a8a84d6758835f1b48dad">00046</a> <a class="code" href="a00211.html#75a9a0949f8a8a84d6758835f1b48dad">interval_t</a>() : value(0) {};
<a name="l00047"></a>00047
<a name="l00049"></a>00049 <span class="keyword">explicit</span> <a class="code" href="a00211.html#75a9a0949f8a8a84d6758835f1b48dad">interval_t</a>( <span class="keywordtype">double</span> sec );
<a name="l00050"></a>00050
<a name="l00052"></a>00052 <span class="keywordtype">double</span> <a class="code" href="a00211.html#d5d8429c0bc59cf6131b2abc7929fa59">seconds</a>() <span class="keyword">const</span>;
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="a00210.html">tbb::tick_count</a>;
<a name="l00055"></a>00055
<a name="l00057"></a>00057 <span class="keyword">friend</span> <a class="code" href="a00211.html">interval_t</a> <a class="code" href="a00211.html#09dde78a4100800c11bb883d6204b586">operator-</a>( <span class="keyword">const</span> <a class="code" href="a00210.html">tick_count</a>& t1, <span class="keyword">const</span> <a class="code" href="a00210.html">tick_count</a>& t0 );
<a name="l00058"></a>00058
<a name="l00060"></a><a class="code" href="a00211.html#5871ead1ca230efbe52a5008470e6428">00060</a> <span class="keyword">friend</span> <a class="code" href="a00211.html">interval_t</a> <a class="code" href="a00211.html#5871ead1ca230efbe52a5008470e6428">operator+</a>( <span class="keyword">const</span> <a class="code" href="a00211.html">interval_t</a>& i, <span class="keyword">const</span> <a class="code" href="a00211.html">interval_t</a>& j ) {
<a name="l00061"></a>00061 <span class="keywordflow">return</span> <a class="code" href="a00211.html#75a9a0949f8a8a84d6758835f1b48dad">interval_t</a>(i.<a class="code" href="a00211.html#beea71acda120af3e3e29f10e8cb5c10">value</a>+j.<a class="code" href="a00211.html#beea71acda120af3e3e29f10e8cb5c10">value</a>);
<a name="l00062"></a>00062 }
<a name="l00063"></a>00063
<a name="l00065"></a><a class="code" href="a00211.html#fa509691e1d689830931e36edd274f76">00065</a> <span class="keyword">friend</span> <a class="code" href="a00211.html">interval_t</a> <a class="code" href="a00211.html#09dde78a4100800c11bb883d6204b586">operator-</a>( <span class="keyword">const</span> <a class="code" href="a00211.html">interval_t</a>& i, <span class="keyword">const</span> <a class="code" href="a00211.html">interval_t</a>& j ) {
<a name="l00066"></a>00066 <span class="keywordflow">return</span> <a class="code" href="a00211.html#75a9a0949f8a8a84d6758835f1b48dad">interval_t</a>(i.<a class="code" href="a00211.html#beea71acda120af3e3e29f10e8cb5c10">value</a>-j.<a class="code" href="a00211.html#beea71acda120af3e3e29f10e8cb5c10">value</a>);
<a name="l00067"></a>00067 }
<a name="l00068"></a>00068
<a name="l00070"></a><a class="code" href="a00211.html#cd9814947902e26463a69a111530f81b">00070</a> <a class="code" href="a00211.html">interval_t</a>& <a class="code" href="a00211.html#cd9814947902e26463a69a111530f81b">operator+=</a>( <span class="keyword">const</span> <a class="code" href="a00211.html">interval_t</a>& i ) {value += i.<a class="code" href="a00211.html#beea71acda120af3e3e29f10e8cb5c10">value</a>; <span class="keywordflow">return</span> *<span class="keyword">this</span>;}
<a name="l00071"></a>00071
<a name="l00073"></a><a class="code" href="a00211.html#35ff7eaf7c2031b4a991402ac9ecb940">00073</a> <a class="code" href="a00211.html">interval_t</a>& <a class="code" href="a00211.html#35ff7eaf7c2031b4a991402ac9ecb940">operator-=</a>( <span class="keyword">const</span> <a class="code" href="a00211.html">interval_t</a>& i ) {value -= i.<a class="code" href="a00211.html#beea71acda120af3e3e29f10e8cb5c10">value</a>; <span class="keywordflow">return</span> *<span class="keyword">this</span>;}
<a name="l00074"></a>00074 };
<a name="l00075"></a>00075
<a name="l00077"></a><a class="code" href="a00210.html#34593326ae4191e02a13c7cbdab9de4c">00077</a> <a class="code" href="a00210.html#34593326ae4191e02a13c7cbdab9de4c">tick_count</a>() : my_count(0) {};
<a name="l00078"></a>00078
<a name="l00080"></a>00080 <span class="keyword">static</span> <a class="code" href="a00210.html">tick_count</a> <a class="code" href="a00210.html#fb7f78ca61cf28398645ace66e284473">now</a>();
<a name="l00081"></a>00081
<a name="l00083"></a>00083 <span class="keyword">friend</span> interval_t <a class="code" href="a00210.html#09dde78a4100800c11bb883d6204b586">operator-</a>( <span class="keyword">const</span> <a class="code" href="a00210.html">tick_count</a>& t1, <span class="keyword">const</span> <a class="code" href="a00210.html">tick_count</a>& t0 );
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="keyword">private</span>:
<a name="l00086"></a>00086 <span class="keywordtype">long</span> <span class="keywordtype">long</span> my_count;
<a name="l00087"></a>00087 };
<a name="l00088"></a>00088
<a name="l00089"></a><a class="code" href="a00210.html#fb7f78ca61cf28398645ace66e284473">00089</a> <span class="keyword">inline</span> <a class="code" href="a00210.html">tick_count</a> <a class="code" href="a00210.html#fb7f78ca61cf28398645ace66e284473">tick_count::now</a>() {
<a name="l00090"></a>00090 <a class="code" href="a00210.html">tick_count</a> result;
<a name="l00091"></a>00091 <span class="preprocessor">#if _WIN32||_WIN64</span>
<a name="l00092"></a>00092 <span class="preprocessor"></span> LARGE_INTEGER qpcnt;
<a name="l00093"></a>00093 QueryPerformanceCounter(&qpcnt);
<a name="l00094"></a>00094 result.<a class="code" href="a00210.html#1ba05ad46dc08bc1bf34bd6cc94e36ec">my_count</a> = qpcnt.QuadPart;
<a name="l00095"></a>00095 <span class="preprocessor">#elif __linux__</span>
<a name="l00096"></a>00096 <span class="preprocessor"></span> <span class="keyword">struct </span>timespec ts;
<a name="l00097"></a>00097 <span class="preprocessor">#if TBB_USE_ASSERT</span>
<a name="l00098"></a>00098 <span class="preprocessor"></span> <span class="keywordtype">int</span> status =
<a name="l00099"></a>00099 <span class="preprocessor">#endif </span><span class="comment">/* TBB_USE_ASSERT */</span>
<a name="l00100"></a>00100 clock_gettime( CLOCK_REALTIME, &ts );
<a name="l00101"></a>00101 __TBB_ASSERT( status==0, <span class="stringliteral">"CLOCK_REALTIME not supported"</span> );
<a name="l00102"></a>00102 result.<a class="code" href="a00210.html#1ba05ad46dc08bc1bf34bd6cc94e36ec">my_count</a> = static_cast<long long>(1000000000UL)*static_cast<long long>(ts.tv_sec) + static_cast<long long>(ts.tv_nsec);
<a name="l00103"></a>00103 <span class="preprocessor">#else </span><span class="comment">/* generic Unix */</span>
<a name="l00104"></a>00104 <span class="keyword">struct </span>timeval tv;
<a name="l00105"></a>00105 <span class="preprocessor">#if TBB_USE_ASSERT</span>
<a name="l00106"></a>00106 <span class="preprocessor"></span> <span class="keywordtype">int</span> status =
<a name="l00107"></a>00107 <span class="preprocessor">#endif </span><span class="comment">/* TBB_USE_ASSERT */</span>
<a name="l00108"></a>00108 gettimeofday(&tv, NULL);
<a name="l00109"></a>00109 __TBB_ASSERT( status==0, <span class="stringliteral">"gettimeofday failed"</span> );
<a name="l00110"></a>00110 result.<a class="code" href="a00210.html#1ba05ad46dc08bc1bf34bd6cc94e36ec">my_count</a> = static_cast<long long>(1000000)*static_cast<long long>(tv.tv_sec) + static_cast<long long>(tv.tv_usec);
<a name="l00111"></a>00111 <span class="preprocessor">#endif </span><span class="comment">/*(choice of OS) */</span>
<a name="l00112"></a>00112 <span class="keywordflow">return</span> result;
<a name="l00113"></a>00113 }
<a name="l00114"></a>00114
<a name="l00115"></a><a class="code" href="a00211.html#1a21a428e00cced2e6a49e0f5f2258bf">00115</a> <span class="keyword">inline</span> <a class="code" href="a00211.html#75a9a0949f8a8a84d6758835f1b48dad">tick_count::interval_t::interval_t</a>( <span class="keywordtype">double</span> sec )
<a name="l00116"></a>00116 {
<a name="l00117"></a>00117 <span class="preprocessor">#if _WIN32||_WIN64</span>
<a name="l00118"></a>00118 <span class="preprocessor"></span> LARGE_INTEGER qpfreq;
<a name="l00119"></a>00119 QueryPerformanceFrequency(&qpfreq);
<a name="l00120"></a>00120 value = static_cast<long long>(sec*qpfreq.QuadPart);
<a name="l00121"></a>00121 <span class="preprocessor">#elif __linux__</span>
<a name="l00122"></a>00122 <span class="preprocessor"></span> value = static_cast<long long>(sec*1E9);
<a name="l00123"></a>00123 <span class="preprocessor">#else </span><span class="comment">/* generic Unix */</span>
<a name="l00124"></a>00124 value = static_cast<long long>(sec*1E6);
<a name="l00125"></a>00125 <span class="preprocessor">#endif </span><span class="comment">/* (choice of OS) */</span>
<a name="l00126"></a>00126 }
<a name="l00127"></a>00127
<a name="l00128"></a><a class="code" href="a00210.html#09dde78a4100800c11bb883d6204b586">00128</a> <span class="keyword">inline</span> <a class="code" href="a00211.html">tick_count::interval_t</a> <a class="code" href="a00210.html#09dde78a4100800c11bb883d6204b586">operator-</a>( <span class="keyword">const</span> <a class="code" href="a00210.html">tick_count</a>& t1, <span class="keyword">const</span> <a class="code" href="a00210.html">tick_count</a>& t0 ) {
<a name="l00129"></a>00129 <span class="keywordflow">return</span> <a class="code" href="a00211.html">tick_count::interval_t</a>( t1.<a class="code" href="a00210.html#1ba05ad46dc08bc1bf34bd6cc94e36ec">my_count</a>-t0.<a class="code" href="a00210.html#1ba05ad46dc08bc1bf34bd6cc94e36ec">my_count</a> );
<a name="l00130"></a>00130 }
<a name="l00131"></a>00131
<a name="l00132"></a><a class="code" href="a00211.html#d5d8429c0bc59cf6131b2abc7929fa59">00132</a> <span class="keyword">inline</span> <span class="keywordtype">double</span> <a class="code" href="a00211.html#d5d8429c0bc59cf6131b2abc7929fa59">tick_count::interval_t::seconds</a>()<span class="keyword"> const </span>{
<a name="l00133"></a>00133 <span class="preprocessor">#if _WIN32||_WIN64</span>
<a name="l00134"></a>00134 <span class="preprocessor"></span> LARGE_INTEGER qpfreq;
<a name="l00135"></a>00135 QueryPerformanceFrequency(&qpfreq);
<a name="l00136"></a>00136 <span class="keywordflow">return</span> value/(double)qpfreq.QuadPart;
<a name="l00137"></a>00137 #elif __linux__
<a name="l00138"></a>00138 <span class="keywordflow">return</span> value*1E-9;
<a name="l00139"></a>00139 #<span class="keywordflow">else</span> <span class="comment">/* generic Unix */</span>
<a name="l00140"></a>00140 <span class="keywordflow">return</span> value*1E-6;
<a name="l00141"></a>00141 #endif <span class="comment">/* (choice of OS) */</span>
<a name="l00142"></a>00142 }
<a name="l00143"></a>00143
<a name="l00144"></a>00144 } <span class="comment">// namespace tbb</span>
<a name="l00145"></a>00145
<a name="l00146"></a>00146 <span class="preprocessor">#endif </span><span class="comment">/* __TBB_tick_count_H */</span>
<a name="l00147"></a>00147
</pre></div><hr>
<p></p>
Copyright © 2005-2010 Intel Corporation. All Rights Reserved.
<p></p>
Intel, Pentium, Intel Xeon, Itanium, Intel XScale and VTune are
registered trademarks or trademarks of Intel Corporation or its
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<p></p>
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