#include <iostream>
#include "boost/interprocess/detail/tmp_dir_helpers.hpp"

void print_boottime()
{
#ifdef BOOST_INTERPROCESS_HAS_BSD_KERNEL_BOOTTIME
    int request[2] = { CTL_KERN, KERN_BOOTTIME };
    struct ::timeval result;
    size_t result_len = sizeof result;

    if (::sysctl (request, 2, &result, &result_len, NULL, 0) < 0)
       return;

    std::cout << "Boot_time=" << result.tv_sec << "," << result.tv_usec << "\n";

    std::string s;
    bool add = false;

    char bootstamp_str[256];

    const char Characters [] =
       { '0', '1', '2', '3', '4', '5', '6', '7'
       , '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };

    std::size_t char_counter = 0;
    long long fields[2] = { result.tv_sec, result.tv_usec };
    for(std::size_t field = 0; field != 2; ++field){
       for(std::size_t i = 0; i != sizeof(long long); ++i){
          const char *ptr = (const char *)&fields[field];
          bootstamp_str[char_counter++] = Characters[(ptr[i]&0xF0)>>4];
          bootstamp_str[char_counter++] = Characters[(ptr[i]&0x0F)];

          std::cout << "i=" << i << ",ptr[i]=" << ptr[i]
             << ",char_counter=" << char_counter
             << ",ptr[i]&0xF0 >> 4=" << ((ptr[i] & 0xF0) >> 4)
             << ",ptr[i]&0x0F=" << (ptr[i] & 0x0F)
             << "\n";
       }
    }
    bootstamp_str[char_counter] = 0;
    if(add){
       s += bootstamp_str;
    }
    else{
       s = bootstamp_str;
    }

    std::cout << "Bootstamp=" << s << "\n";
#endif
}

int main(int argc, char *argv[])
{
    print_boottime();
    return 0;
}