func nfilesSet(n int) int { var rlimit unix.Rlimit _ = unix.Getrlimit(unix.RLIMIT_NOFILE, &rlimit) if n <= 0 { rlimit.Cur = rlimit.Max } else if uint64(n) < rlimit.Max { rlimit.Cur = uint64(n) } _ = unix.Setrlimit(unix.RLIMIT_NOFILE, &rlimit) return nfilesGet() }
func TestRlimit(t *testing.T) { var rlimit, zero unix.Rlimit err := unix.Getrlimit(unix.RLIMIT_NOFILE, &rlimit) if err != nil { t.Fatalf("Getrlimit: save failed: %v", err) } if zero == rlimit { t.Fatalf("Getrlimit: save failed: got zero value %#v", rlimit) } set := rlimit set.Cur = set.Max - 1 err = unix.Setrlimit(unix.RLIMIT_NOFILE, &set) if err != nil { t.Fatalf("Setrlimit: set failed: %#v %v", set, err) } var get unix.Rlimit err = unix.Getrlimit(unix.RLIMIT_NOFILE, &get) if err != nil { t.Fatalf("Getrlimit: get failed: %v", err) } set = rlimit set.Cur = set.Max - 1 if set != get { // Seems like Darwin requires some privilege to // increase the soft limit of rlimit sandbox, though // Setrlimit never reports an error. switch runtime.GOOS { case "darwin": default: t.Fatalf("Rlimit: change failed: wanted %#v got %#v", set, get) } } err = unix.Setrlimit(unix.RLIMIT_NOFILE, &rlimit) if err != nil { t.Fatalf("Setrlimit: restore failed: %#v %v", rlimit, err) } }