CpuInfo::CpuInfo() {
QFile cpuInfoFile("/proc/cpuinfo");
if (!cpuInfoFile.open(QIODevice::ReadOnly)) {
return;
}
cpuInfo = QString(cpuInfoFile.readAll()).split('\n', QString::SkipEmptyParts);
}
void NAClusterInfoLinux::determineLinuxSysInfo()
{
// Set the page size in killobytes and determine how much memory
// is available on this node (in kilobytes).
pageSize_ = (size_t)sysconf(_SC_PAGESIZE) / 1024U;
totalMemoryAvailable_ = pageSize_ * (size_t)sysconf(_SC_PHYS_PAGES);
numCPUcoresPerNode_ = sysconf(_SC_NPROCESSORS_ONLN);
frequency_ = 0.0;
// Read the CPU frequency from the sysfs filesystem.
ifstream infoFile("/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq");
if (infoFile.fail()) {
// This code should log a warning.
// use /proc/cpuinfo
char var[256];
ifstream cpuInfoFile("/proc/cpuinfo");
const char* freqToken = "cpu MHz";
Lng32 freqTokenLen = strlen(freqToken);
while(cpuInfoFile.good())
{
// Read the variable name from the file.
cpuInfoFile.getline(var, sizeof(var), ':'); // read the token part
Lng32 len = strlen(var);
if(len >= freqTokenLen && !strncmp(var, freqToken, freqTokenLen))
{
cpuInfoFile >> frequency_;
break;
}
cpuInfoFile.getline(var, sizeof(var)); // read the value part
}
QString extractCpuInfoLine(int processorNumber, const QString ®ExpStr)
{
if (processorNumber == -1) {
return QString();
}
QFile cpuInfoFile("/proc/cpuinfo");
if (!cpuInfoFile.open(QIODevice::ReadOnly)) {
return QString();
}
QStringList cpuInfo = QString(cpuInfoFile.readAll()).split('\n', QString::SkipEmptyParts);
cpuInfoFile.close();
const QRegExp processorRegExp("processor\\s+:\\s+(\\d+)");
const QRegExp regExp(regExpStr);
int line = 0;
while (line < cpuInfo.size()) {
if (processorRegExp.exactMatch(cpuInfo.at(line))) {
int recordProcNum = processorRegExp.capturedTexts()[1].toInt();
if (recordProcNum == processorNumber) {
++line;
while (line < cpuInfo.size()) {
if (regExp.exactMatch(cpuInfo.at(line))) {
return regExp.capturedTexts()[1];
}
++line;
}
}
}
++line;
}
return QString();
}
void QLCFile::checkRaspberry()
{
#if defined(Q_WS_X11) || defined(Q_OS_LINUX)
QFile cpuInfoFile("/proc/cpuinfo");
if (cpuInfoFile.exists() == true)
{
cpuInfoFile.open(QFile::ReadOnly);
QString content = QLatin1String(cpuInfoFile.readAll());
cpuInfoFile.close();
if (content.contains("BCM2708") || content.contains("BCM2709"))
m_isRaspberry = true;
}
#endif
}
