return l.do(f)
	}
	return nil
}

func (l *Init) do(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
}

// DoWithContext is similar to Do except that it accepts a context as an argument to be passed.

	setEventStreamHeaders(w)

	// Listen Publisher and peer-listen-client uses nonblocking send and hence does not wait for slow receivers.
	// Use buffered channel to take care of burst sends or slow w.Write()
	mergeCh := make(chan []byte, globalAPIConfig.getRequestsPoolCapacity()*len(globalEndpoints.Hostnames()))
	localCh := make(chan event.Event, globalAPIConfig.getRequestsPoolCapacity())

func (f fatalMsg) pretty(msg string, args ...interface{}) {
	// Build the passed error message
	errMsg := fmt.Sprintf(msg, args...)

	tagPrinted := false

	// Print the error message: the following code takes care
	// of splitting error text and always pretty printing the
	// red banner along with the error message. Since the error
	// message itself contains some colored text, we needed

	r := z.rebalMeta
	poolStats := r.PoolStats[poolIdx]
	if poolStats.Info.Status == rebalCompleted {
		return true
	}

	pfi := float64(poolStats.InitFreeSpace+poolStats.Bytes) / float64(poolStats.InitCapacity)
	// Mark pool rebalance as done if within 5% from PercentFreeGoal.
	if diff := math.Abs(pfi - r.PercentFreeGoal); diff <= 0.05 {
		r.PoolStats[poolIdx].Info.Status = rebalCompleted
		r.PoolStats[poolIdx].Info.EndTime = time.Now()

		return
	}

	if err := enforceBucketQuotaHard(ctx, dstBucket, actualPartSize); err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	// Special care for CopyObjectPart
	if partRangeErr := checkCopyPartRangeWithSize(rs, actualPartSize); partRangeErr != nil {
		writeCopyPartErr(ctx, w, partRangeErr, r.URL)
		return
	}

	// Get the object offset & length

						VersionID: goi.VersionID,
					}
				}
				return goi, ObjectNotFound{
					Bucket: bucket,
					Object: object,
				}
			}
		}
	}

	//  Determine whether to mark object deleted for replication
	markDelete := goi.VersionID != ""

	// Default deleteMarker to true if object is under versioning
	deleteMarker := opts.Versioned

	if opts.VersionID != "" {

			defer wg.Done()
			dobjects[idx], derrs[idx] = pool.DeleteObject(ctx, bucket, object, opts)
		}(idx, pool)
	}
	wg.Wait()

	// the poolIndices array is pre-sorted in order of latest ModTime, we care only about pool with latest object though
	// the delete call tries to clean up other pools during DeleteObject call.
	objInfo = dobjects[0]
	objInfo.Name = decodeDirObject(object)
	err = derrs[0]

	for _, stackFn := range ignoredStackFns {
		if !strings.Contains(stack, stackFn) {
			ok = false
			continue
		}
		break
	}
	return ok
}

// pickRelevantGoroutines returns all goroutines we care about for the purpose
// of leak checking. It excludes testing or runtime ones.
func pickRelevantGoroutines() (gs []string) {
	// get runtime stack buffer.
	buf := debug.Stack()

	}

	rulesMap := event.NewRulesMap(eventNames, pattern, event.TargetID{ID: mustGetUUID()})

	// Listen Publisher uses nonblocking publish and hence does not wait for slow subscribers.
	// Use buffered channel to take care of burst sends or slow w.Write()
	ch := make(chan event.Event, globalAPIConfig.getRequestsPoolCapacity())
	err := globalHTTPListen.Subscribe(mask, ch, ctx.Done(), func(ev event.Event) bool {

	gridLogIf(ctx, err)
	if m.MuxID == 0 {
		atomic.StoreInt64(&c.LastPong, time.Now().Unix())
		return
	}
	if v, ok := c.outgoing.Load(m.MuxID); ok {
		v.pong(pong)
	} else {
		// We don't care if the client was removed in the meantime,
		// but we send a disconnect message to the server just in case.
		gridLogIf(ctx, c.queueMsg(message{Op: OpDisconnectClientMux, MuxID: m.MuxID}, nil))
	}
}