src/hotspot/os/linux/os_linux.cpp

rev 56978 : 8234397: add OS uptime information to os::print_os_info output

*** 2118,2127 ****
--- 2118,2129 ----
  
    os::Linux::print_distro_info(st);
  
    os::Posix::print_uname_info(st);
  
+   os::Linux::print_uptime_info(st);
+ 
    // Print warning if unsafe chroot environment detected
    if (unsafe_chroot_detected) {
      st->print("WARNING!! ");
      st->print_cr("%s", unstable_chroot_error);
    }
*** 2303,2312 ****
--- 2305,2323 ----
  void os::Linux::print_ld_preload_file(outputStream* st) {
    _print_ascii_file("/etc/ld.so.preload", st, "\n/etc/ld.so.preload:");
    st->cr();
  }
  
+ void os::Linux::print_uptime_info(outputStream* st) {
+   struct sysinfo sinfo;
+   int ret = sysinfo(&sinfo);
+   if (ret == 0) {
+     st->print_cr("OS uptime (in days): %.2lf", (double) sinfo.uptime/(60*60*24) );
+   }
+ }
+ 
+ 
  void os::Linux::print_container_info(outputStream* st) {
    if (!OSContainer::is_containerized()) {
      return;
    }