unsigned int getFilenumLimit(bool hardOrSoft)
{
  struct rlimit rlim;
  if(getrlimit(RLIMIT_NOFILE, &rlim) < 0)
    unixDie("Requesting number of available file descriptors");
  return hardOrSoft ? rlim.rlim_max : rlim.rlim_cur;
}
unsigned int getFilenumLimit(bool hardOrSoft)
{
  struct rlimit rlim;
  if(getrlimit(RLIMIT_NOFILE, &rlim) < 0)
    unixDie("Requesting number of available file descriptors");
  return hardOrSoft ? rlim.rlim_max : rlim.rlim_cur;
}