?? cpustat.cpp
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#include <qstringlist.h>#include <qfile.h>#include <qtextstream.h>#include "cpustat.h"CpuStat::CpuStat(){ lookUp(procValues);}QTime CpuStat::upTime() const{ QTime t; for ( int i = 0; i < NValues; i++ ) t = t.addSecs(int(procValues[i] / 100)); return t;}void CpuStat::statistic(double &user, double &system){ double values[NValues]; lookUp(values); double userDelta = values[User] + values[Nice] - procValues[User] - procValues[Nice]; double systemDelta = values[System] - procValues[System]; double totalDelta = 0; for ( int i = 0; i < NValues; i++ ) totalDelta += values[i] - procValues[i]; user = userDelta / totalDelta * 100.0; system = systemDelta / totalDelta * 100.0; for ( int j = 0; j < NValues; j++ ) procValues[j] = values[j];}void CpuStat::lookUp(double values[NValues]) const{ QFile file("/proc/stat");#if QT_VERSION >= 0x040000 if ( !file.open(QIODevice::ReadOnly) )#else if ( !file.open(IO_ReadOnly) )#endif { static double dummyValues[][NValues] = { { 103726, 0, 23484, 819556 }, { 103783, 0, 23489, 819604 }, { 103798, 0, 23490, 819688 }, { 103820, 0, 23490, 819766 }, { 103840, 0, 23493, 819843 }, { 103875, 0, 23499, 819902 }, { 103917, 0, 23504, 819955 }, { 103950, 0, 23508, 820018 }, { 103987, 0, 23510, 820079 }, { 104020, 0, 23513, 820143 }, { 104058, 0, 23514, 820204 }, { 104099, 0, 23520, 820257 }, { 104121, 0, 23525, 820330 }, { 104159, 0, 23530, 820387 }, { 104176, 0, 23534, 820466 }, { 104215, 0, 23538, 820523 }, { 104245, 0, 23541, 820590 }, { 104267, 0, 23545, 820664 }, { 104311, 0, 23555, 820710 }, { 104355, 0, 23565, 820756 }, { 104367, 0, 23567, 820842 }, { 104383, 0, 23572, 820921 }, { 104396, 0, 23577, 821003 }, { 104413, 0, 23579, 821084 }, { 104446, 0, 23588, 821142 }, { 104521, 0, 23594, 821161 }, { 104611, 0, 23604, 821161 }, { 104708, 0, 23607, 821161 }, { 104804, 0, 23611, 821161 }, { 104895, 0, 23620, 821161 }, { 104993, 0, 23622, 821161 }, { 105089, 0, 23626, 821161 }, { 105185, 0, 23630, 821161 }, { 105281, 0, 23634, 821161 }, { 105379, 0, 23636, 821161 }, { 105472, 0, 23643, 821161 }, { 105569, 0, 23646, 821161 }, { 105666, 0, 23649, 821161 }, { 105763, 0, 23652, 821161 }, { 105828, 0, 23661, 821187 }, { 105904, 0, 23666, 821206 }, { 105999, 0, 23671, 821206 }, { 106094, 0, 23676, 821206 }, { 106184, 0, 23686, 821206 }, { 106273, 0, 23692, 821211 }, { 106306, 0, 23700, 821270 }, { 106341, 0, 23703, 821332 }, { 106392, 0, 23709, 821375 }, { 106423, 0, 23715, 821438 }, { 106472, 0, 23721, 821483 }, { 106531, 0, 23727, 821517 }, { 106562, 0, 23732, 821582 }, { 106597, 0, 23736, 821643 }, { 106633, 0, 23737, 821706 }, { 106666, 0, 23742, 821768 }, { 106697, 0, 23744, 821835 }, { 106730, 0, 23748, 821898 }, { 106765, 0, 23751, 821960 }, { 106799, 0, 23754, 822023 }, { 106831, 0, 23758, 822087 }, { 106862, 0, 23761, 822153 }, { 106899, 0, 23763, 822214 }, { 106932, 0, 23766, 822278 }, { 106965, 0, 23768, 822343 }, { 107009, 0, 23771, 822396 }, { 107040, 0, 23775, 822461 }, { 107092, 0, 23780, 822504 }, { 107143, 0, 23787, 822546 }, { 107200, 0, 23795, 822581 }, { 107250, 0, 23803, 822623 }, { 107277, 0, 23810, 822689 }, { 107286, 0, 23810, 822780 }, { 107313, 0, 23817, 822846 }, { 107325, 0, 23818, 822933 }, { 107332, 0, 23818, 823026 }, { 107344, 0, 23821, 823111 }, { 107357, 0, 23821, 823198 }, { 107368, 0, 23823, 823284 }, { 107375, 0, 23824, 823377 }, { 107386, 0, 23825, 823465 }, { 107396, 0, 23826, 823554 }, { 107422, 0, 23830, 823624 }, { 107434, 0, 23831, 823711 }, { 107456, 0, 23835, 823785 }, { 107468, 0, 23838, 823870 }, { 107487, 0, 23840, 823949 }, { 107515, 0, 23843, 824018 }, { 107528, 0, 23846, 824102 }, { 107535, 0, 23851, 824190 }, { 107548, 0, 23853, 824275 }, { 107562, 0, 23857, 824357 }, { 107656, 0, 23863, 824357 }, { 107751, 0, 23868, 824357 }, { 107849, 0, 23870, 824357 }, { 107944, 0, 23875, 824357 }, { 108043, 0, 23876, 824357 }, { 108137, 0, 23882, 824357 }, { 108230, 0, 23889, 824357 }, { 108317, 0, 23902, 824357 }, { 108412, 0, 23907, 824357 }, { 108511, 0, 23908, 824357 }, { 108608, 0, 23911, 824357 }, { 108704, 0, 23915, 824357 }, { 108801, 0, 23918, 824357 }, { 108891, 0, 23928, 824357 }, { 108987, 0, 23932, 824357 }, { 109072, 0, 23943, 824361 }, { 109079, 0, 23943, 824454 }, { 109086, 0, 23944, 824546 }, { 109098, 0, 23950, 824628 }, { 109108, 0, 23955, 824713 }, { 109115, 0, 23957, 824804 }, { 109122, 0, 23958, 824896 }, { 109132, 0, 23959, 824985 }, { 109142, 0, 23961, 825073 }, { 109146, 0, 23962, 825168 }, { 109153, 0, 23964, 825259 }, { 109162, 0, 23966, 825348 }, { 109168, 0, 23969, 825439 }, { 109176, 0, 23971, 825529 }, { 109185, 0, 23974, 825617 }, { 109193, 0, 23977, 825706 }, { 109198, 0, 23978, 825800 }, { 109206, 0, 23978, 825892 }, { 109212, 0, 23981, 825983 }, { 109219, 0, 23981, 826076 }, { 109225, 0, 23981, 826170 }, { 109232, 0, 23984, 826260 }, { 109242, 0, 23984, 826350 }, { 109255, 0, 23986, 826435 }, { 109268, 0, 23987, 826521 }, { 109283, 0, 23990, 826603 }, { 109288, 0, 23991, 826697 }, { 109295, 0, 23993, 826788 }, { 109308, 0, 23994, 826874 }, { 109322, 0, 24009, 826945 }, { 109328, 0, 24011, 827037 }, { 109338, 0, 24012, 827126 }, { 109347, 0, 24012, 827217 }, { 109354, 0, 24017, 827305 }, { 109367, 0, 24017, 827392 }, { 109371, 0, 24019, 827486 }, }; static int counter = 0; for ( int i = 0; i < NValues; i++ ) values[i] = dummyValues[counter][i]; counter = (counter + 1) % (sizeof(dummyValues) / sizeof(dummyValues[0])); } else { QTextStream textStream(&file); do { QString line = textStream.readLine();#if QT_VERSION < 0x040000 line = line.stripWhiteSpace();#else line = line.trimmed();#endif if ( line.startsWith("cpu ") ) { const QStringList valueList =#if QT_VERSION < 0x040000 QStringList::split(" ", line);#else line.split(" ", QString::SkipEmptyParts);#endif if ( valueList.count() >= 5 ) { for ( int i = 0; i < NValues; i++ ) values[i] = valueList[i+1].toDouble(); } break; } } #if QT_VERSION < 0x040000 while(!textStream.eof());#else while(!textStream.atEnd());#endif }}?? 快捷鍵說明
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