}

// SignalService - sends signal to peer nodes.
func (client *peerRESTClient) SignalService(sig serviceSignal, subSys string, dryRun bool, execAt *time.Time) error {
	values := grid.NewMSS()
	values.Set(peerRESTSignal, strconv.Itoa(int(sig)))
	values.Set(peerRESTDryRun, strconv.FormatBool(dryRun))
	values.Set(peerRESTSubSys, subSys)
	if execAt != nil {
		values.Set(peerRESTExecAt, execAt.Format(time.RFC3339Nano))
	}

		if err != nil {
			return np, grid.NewRemoteErr(err)
		}
		subSys := vars.Get(peerRESTSubSys)
		// Apply dynamic values.
		ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
		defer cancel()
		if subSys == "" {
			err = applyDynamicConfig(ctx, objAPI, srvCfg)
		} else {
			err = applyDynamicConfigForSubSys(ctx, objAPI, srvCfg, subSys)
		}
		if err != nil {
			return np, grid.NewRemoteErr(err)

func (sys *NotificationSys) SignalConfigReload(subSys string) []NotificationPeerErr {
	ng := WithNPeers(len(sys.peerClients))
	for idx, client := range sys.peerClients {
		if client == nil {
			continue
		}
		client := client
		ng.Go(GlobalContext, func() error {
			return client.SignalService(serviceReloadDynamic, subSys, false, nil)
		}, idx, *client.host)
	}
	return ng.Wait()
}

func (f *fakeNs) Close() error {
	f.closed.Store(true)
	return nil
}

func fakeFs() fs.FS {
	subFs, err := fs.Sub(fakeProc, "testdata")
	if err != nil {
		panic(err)
	}
	subFs, err = fs.Sub(subFs, "cgroupns")
	if err != nil {
		panic(err)
	}
	return &fakeFsWithFakeFds{ReadDirFS: subFs.(fs.ReadDirFS)}
}

type fakeFsWithFakeFds struct {
	fs.ReadDirFS
}
type fakeFileFakeFds struct {

			if wg != nil {
				wg.Done()
			}
			// Clean up and de-register the subscriber
			ps.Lock()
			defer ps.Unlock()
			var remainTypes Mask
			for i, s := range ps.subs {
				if s == sub {
					ps.subs = append(ps.subs[:i], ps.subs[i+1:]...)
				} else {
					remainTypes.Merge(s.types)
				}
			}
			atomic.StoreUint64(&ps.types, uint64(remainTypes))
			atomic.AddInt32(&ps.numSubscribers, -1)
		}()

		t.Fatalf("unexpected error: %v", err)
	}
	if err := ps.Subscribe(MaskAll, ch2, doneCh, nil); err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	ps.Lock()
	defer ps.Unlock()

	if len(ps.subs) != 2 || ps.NumSubscribers(MaskAll) != 2 || ps.Subscribers() != 2 {
		t.Fatalf("expected 2 subscribers")
	}
}

func TestNumSubscribersMask(t *testing.T) {
	ps := New[Maskable, Mask](2)
	ch1 := make(chan Maskable, 1)

	SUBS	$0xff, R6, RSP                                   // ERROR "illegal destination register"
	SUBS	$0xffff0, R6, RSP                                // ERROR "illegal destination register"
	SUBS	$0x1000100010001000, R6, RSP                     // ERROR "illegal destination register"
	SUBS	$0x10001000100011, R6, RSP                       // ERROR "illegal destination register"

            terminal = ft.getTerminal();
        }
        List<String> subs = new ArrayList<>();
        subs.add("type=" + terminal.getType());
        if (terminal instanceof TerminalExt te) {
            subs.add("provider=" + te.getProvider().name());
        }
        if (terminal instanceof AbstractPosixTerminal pt) {
            subs.add("pty=" + pt.getPty().getClass().getName());
        }

	SUBSW R2.SXTH<<3, R13, R6                  // a6ad226b
	SUBS R21.UXTX<<2, R27, R4                  // 646b35eb
	SUBSW $(44<<12), R6, R9                    // SUBSW $180224, R6, R9         // c9b04071
	SUBS $(1804<<12), R13, R9                  // SUBS $7389184, R13, R9        // a9315cf1
	SUBSW R22->28, R6, R7                      // c770966b
	SUBSW R22>>28, R6, R7                      // c770566b
	SUBS R26<<15, R6, R16                      // d03c1aeb

	SUBPD X11, X11                          // 66450f5cdb
	SUBPS (BX), X2                          // 0f5c13
	SUBPS (R11), X2                         // 410f5c13
	SUBPS X2, X2                            // 0f5cd2
	SUBPS X11, X2                           // 410f5cd3
	SUBPS (BX), X11                         // 440f5c1b
	SUBPS (R11), X11                        // 450f5c1b
	SUBPS X2, X11                           // 440f5cda