int init_process_info_sysdep(void) {

  num_cpus= sysconf( _SC_NPROCESSORS_ONLN);

  return (getuid()==0);

}

double timestruc_to_tseconds(timestruc_t t) {
  return  t.tv_sec * 10 + t.tv_nsec / 100000000.0;
}

int get_process_info_sysdep(ProcInfo_T p) {

  char buf[4096];
  psinfo_t  * psinfo=  (psinfo_t *)&buf;
  pstatus_t * pstatus= (pstatus_t *)&buf;

  if (!read_proc_file(buf,4096, "psinfo", p->pid)) {

    return FALSE;

  }

  /* If we don't have any light-weight processes (LWP) then we
     are definitely a zombie */

  if ( psinfo->pr_nlwp == 0 ) {

    p->status_flag = PROCESS_ZOMBIE;

  }


  if ( p->status_flag != PROCESS_ZOMBIE ) {
    /* We can't access /proc/$pid/status of a zombie */
    /* and does it anyway matter? */

    p->mem_percent = psinfo->pr_pctmem * 1000 / 0x8000;
    p->mem_kbyte = psinfo->pr_rssize;

    if (!read_proc_file(buf,4096, "status", p->pid)) {

      return FALSE;

    }

    p->cputime_prev= p->cputime;
    p->cputime= ( timestruc_to_tseconds(pstatus->pr_utime) +
		  timestruc_to_tseconds(pstatus->pr_stime) );

    if( include_children ) {

      p->cputime+= ( timestruc_to_tseconds(pstatus->pr_cutime) +
		     timestruc_to_tseconds(pstatus->pr_cstime) );

    }
    /* first run ? */

    if ( p->time_prev == 0.0 ) {

      p->cputime_prev= p->cputime;

    }

  } else {

    p->cputime_prev= p->cputime = 0;
    p->mem_kbyte= 0;
    p->mem_percent= 0.0;

  }

  return TRUE;
}