Howto get hardware information in Linux using C++

Question

I need to get specifications of hard disk on both Win and *nix machines. I used on Linux like this:

   static struct hd_driveid hd;
         


        

Answer 1

//-------------------------------------------------
// Without Boost LIB usage
//-------------------------------------------------
#include 
#include 
//-------------------------------------------------
stringstream   strStream;
unsigned long  hdd_size;
unsigned long  hdd_free;
ostringstream  strConvert;
//---
struct sysinfo info;
sysinfo( &info );   
//---
struct statvfs fsinfo;
statvfs("/", &fsinfo);
//---
//---
unsigned num_cpu = std::thread::hardware_concurrency();
//---
ifstream cpu_freq("/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq");
strStream << cpu_freq.rdbuf();
std::string  cpufrequency = strStream.str();
//---
strStream.str("");
ifstream cpu_temp("/sys/class/thermal/thermal_zone0/temp");
strStream << cpu_temp.rdbuf();
strConvert<< fixed << setprecision(2) << std::stof(strStream.str());
std::string cputemp = strConvert.str();
//---
std::string   mem_size = to_string( (size_t)info.totalram *     (size_t)info.mem_unit );
//---
hdd_size = fsinfo.f_frsize * fsinfo.f_blocks;
hdd_free = fsinfo.f_bsize * fsinfo.f_bfree;  
//---                                                
std::cout << "CPU core number           ==" << num_cpu       << endl;
std::cout << "CPU core speed            ==" << cpufrequency  << endl;
std::cout << "CPU temperature (C)       ==" << cputemp       << endl;
//---
std::cout << "Memory size               ==" << mem_size      << endl;
//---
std::cout << "Disk, filesystem size     ==" << hdd_size      << endl;
std::cout << "Disk free space           ==" << hdd_free      << endl;
//---