logger.Info("bucketMetacache.findCache: bucket %s does not match this bucket %s", o.Bucket, b.bucket)
		debug.PrintStack()
		return metacache{}
	}

	// Grab a write lock, since we create one if we cannot find one.
	b.mu.Lock()
	defer b.mu.Unlock()

	// Check if exists already.
	if c, ok := b.caches[o.ID]; ok {
		c.lastHandout = time.Now()
		b.caches[o.ID] = c
		b.debugf("returning existing %v", o.ID)
		return c

	if err == nil {
		return
	}

	nerr := unwrapErrs(err)
	l.Lock()
	shouldLog := true
	prev, ok := l.IDMap[id]
	if !ok {
		l.IDMap[id] = onceErr{
			Err:   nerr,
			Count: 1,
		}
	} else if prev.Err.Error() == nerr.Error() {
		// if errors are equal do not log.
		prev.Count++
		l.IDMap[id] = prev
		shouldLog = false
	}
	l.Unlock()

	if shouldLog {
		consoleLogIf(ctx, subsystem, err, errKind...)
	}

}

func (l *lazyInit) Do(f func() error) error {
	if atomic.LoadUint32(&l.done) == 0 {
		return l.doSlow(f)
	}
	return nil
}

func (l *lazyInit) doSlow(f func() error) error {
	l.m.Lock()
	defer l.m.Unlock()
	if atomic.LoadUint32(&l.done) == 0 {
		if err := f(); err != nil {
			return err
		}
		// Mark as done only when f() is successful
		atomic.StoreUint32(&l.done, 1)
	}
	return nil

	vars := mux.Vars(r)
	profiles := strings.Split(vars[peerRESTProfiler], ",")
	if len(profiles) == 0 {
		s.writeErrorResponse(w, errors.New("profiler name is missing"))
		return
	}
	globalProfilerMu.Lock()
	defer globalProfilerMu.Unlock()
	if globalProfiler == nil {
		globalProfiler = make(map[string]minioProfiler, 10)
	}

	// Stop profiler of all types if already running
	for k, v := range globalProfiler {

	if opts.CheckPrecondFn != nil {
		// Lock the object before reading.
		lk := er.NewNSLock(bucket, object)
		lkctx, err := lk.GetRLock(ctx, globalOperationTimeout)
		if err != nil {
			return nil, err
		}
		rctx := lkctx.Context()
		obj, err := er.getObjectInfo(rctx, bucket, object, opts)
		lk.RUnlock(lkctx)
		if err != nil && !isErrVersionNotFound(err) && !isErrObjectNotFound(err) {

}

func (m *muxServer) send(msg message) {
	m.sendMu.Lock()
	defer m.sendMu.Unlock()
	msg.MuxID = m.ID
	msg.Seq = m.SendSeq
	m.SendSeq++
	if debugPrint {
		fmt.Printf("Mux %d, Sending %+v\n", m.ID, msg)
	}
	gridLogIf(m.ctx, m.parent.queueMsg(msg, nil))
}

func (m *muxServer) close() {
	m.cancel()
	m.recvMu.Lock()
	defer m.recvMu.Unlock()

	if m.inbound != nil {
		xioutil.SafeClose(m.inbound)

		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)

func (opts Config) ExpirationWait() time.Duration {
	configMu.RLock()
	defer configMu.RUnlock()

	return opts.ExpirationWorkersWait
}

// ReplicationWait returns the duration for which a batch replication worker
// would wait before working on next object.
func (opts Config) ReplicationWait() time.Duration {
	configMu.RLock()
	defer configMu.RUnlock()

	return opts.ReplicationWorkersWait
}

		if err != nil {
			errResp(err)
			return
		}
	}

	nsLock := objectAPI.NewNSLock(minioMetaBucket, "health-check-in-progress")
	lkctx, err := nsLock.GetLock(ctx, newDynamicTimeout(deadline, deadline))
	if err != nil { // returns a locked lock
		errResp(err)
		return
	}

	defer nsLock.Unlock(lkctx)
	healthCtx, healthCancel := context.WithTimeout(lkctx.Context(), deadline)

	if c != nil {
		c2 := c.clone()
		c = &c2
	}
	p.cycleInfoMu.Lock()
	p.cycleInfo = c
	p.cycleInfoMu.Unlock()
}

// getCycle returns the current cycle metrics.
// If not nil, the returned value can safely be modified.
func (p *scannerMetrics) getCycle() *currentScannerCycle {
	p.cycleInfoMu.Lock()
	defer p.cycleInfoMu.Unlock()
	if p.cycleInfo == nil {
		return nil
	}
	c := p.cycleInfo.clone()