}
}

// heapStatsDelta contains deltas of various runtime memory statistics
// that need to be updated together in order for them to be kept
// consistent with one another.
type heapStatsDelta struct {
	// Memory stats.
	committed       int64 // byte delta of memory committed
	released        int64 // byte delta of released memory generated
	inHeap          int64 // byte delta of memory placed in the heap

		"If this is set to true, istiod will create and manage its default GatewayClasses").Get()

	DeltaXds = env.Register("ISTIO_DELTA_XDS", true,
		"If enabled, pilot will only send the delta configs as opposed to the state of the world on a "+
			"Resource Request. This feature uses the delta xds api, but does not currently send the actual deltas.").Get()

	EnableQUICListeners = env.Register("PILOT_ENABLE_QUIC_LISTENERS", false,

		if dir == model.TrafficDirectionInbound {
			// Append all inbound clusters because in both stow/delta we always build all inbound clusters.
			// In reality, the delta building is only for outbound clusters. We need to revist here once we support delta for inbound.
			// So deletedClusters.Difference(builtClusters) would give us the correct deleted inbound clusters.
			deletedClusters.Insert(cluster)

    vb.baseVal.x = u.x - (u.x - vb.baseVal.x) * (w2 / w1);
    vb.baseVal.y = u.y - (u.y - vb.baseVal.y) * (h2 / h1);
  }

  function handleWheel(e) {
    if (e.deltaY == 0) return;
    // Change scale factor by 1.1 or 1/1.1
    rescale(currentScale * (e.deltaY < 0 ? 1.1 : (1/1.1)),
            toSvg(e.offsetX, e.offsetY));
  }

  function setMode(m) {
    mode = m;
    touchid = null;
    touchid2 = null;
  }

etc. When encoding a value, the field numbers are delta encoded for efficiency
and the fields are always sent in order of increasing field number; the deltas are
therefore unsigned. The initialization for the delta encoding sets the field
number to -1, so an unsigned integer field 0 with value 7 is transmitted as unsigned
delta = 1, unsigned value = 7 or (01 07). Finally, after all the fields have been

func (e *quotaEvaluator) checkQuotas(quotas []corev1.ResourceQuota, admissionAttributes []*admissionWaiter, remainingRetries int) {
	// yet another copy to compare against originals to see if we actually have deltas
	originalQuotas, err := copyQuotas(quotas)
	if err != nil {
		utilruntime.HandleError(err)
		return
	}

	atLeastOneChanged := false
	for i := range admissionAttributes {

	var logFiltered string
	if !req.Delta.IsEmpty() && !requiresResourceNamesModification(w.TypeUrl) {
		// Some types opt out of this and natively handle req.Delta
		logFiltered = " filtered:" + strconv.Itoa(len(w.ResourceNames)-len(req.Delta.Subscribed))
		w = &model.WatchedResource{
			TypeUrl:       w.TypeUrl,
			ResourceNames: req.Delta.Subscribed.UnsortedList(),
		}
	}

	var res model.Resources

			t.Log(e)
		}
	}

	for _, test := range []struct {
		count int
		delta Duration
	}{{
		count: baseCount,
		delta: baseDelta,
	}, {
		count: 8,
		delta: 1 * Second,
	}} {
		count, delta := test.count, test.delta
		ticker := NewTicker(delta)
		t0 := Now()
		for range count / 2 {
			<-ticker.C
		}
		ticker.Reset(delta * 2)
		for range count - count/2 {
			<-ticker.C
		}
		ticker.Stop()

			key, err := cache.MetaNamespaceKeyFunc(new)
			if err == nil {
				r.svcQueue.Add(key)
			}
		},
		DeleteFunc: func(obj interface{}) {
			// IndexerInformer uses a delta queue, therefore for deletes we have to use this
			// key function.
			key, err := cache.DeletionHandlingMetaNamespaceKeyFunc(obj)
			if err == nil {
				r.svcQueue.Add(key)
			}
		},
	}, interval)

//     Disable notifications for fd. Return an errno value.
//
// func netpoll(delta int64) (gList, int32)
//     Poll the network. If delta < 0, block indefinitely. If delta == 0,
//     poll without blocking. If delta > 0, block for up to delta nanoseconds.
//     Return a list of goroutines built by calling netpollready,
//     and a delta to add to netpollWaiters when all goroutines are ready.