type packetQueue struct {
	empty chan packetQueueState // contains configuration parameters when the queue is empty and not closed
	ready chan packetQueueState // contains the packets when non-empty or closed
	full  chan packetQueueState // contains the packets when buffer is full and not closed
}

func newPacketQueue(readBufferBytes int) *packetQueue {
	pq := &packetQueue{
		empty: make(chan packetQueueState, 1),

// *byte is really *runtime.Type
func makechan64(chanType *byte, size int64) (hchan chan any)
func makechan(chanType *byte, size int) (hchan chan any)
func chanrecv1(hchan <-chan any, elem *any)
func chanrecv2(hchan <-chan any, elem *any) bool
func chansend1(hchan chan<- any, elem *any)
func closechan(hchan chan<- any)
func chanlen(hchan any) int
func chancap(hchan any) int

var writeBarrier struct {

	eventedPlegMaxStreamRetries int
	// Indicates relisting related parameters
	relistDuration *RelistDuration
	// Stop the Evented PLEG by closing the channel.
	stopCh chan struct{}
	// Stops the periodic update of the cache global timestamp.
	stopCacheUpdateCh chan struct{}
	// Locks the start/stop operation of the Evented PLEG.
	runningMu sync.Mutex
}

// NewEventedPLEG instantiates a new EventedPLEG object and return it.

	// All responses *must* be read by the caller until either an error is returned or the channel is closed.
	// Canceling the context will cause the context cancellation error to be returned.
	responses <-chan Response
	cancel    context.CancelCauseFunc

	// Requests sent to the server.
	// If the handler is defined with 0 incoming capacity this will be nil.
	// Channel *must* be closed to signal the end of the stream.

// See golang.org/cl/30164 which documented this. The net/http package
// depends on this.
func TestReadTimeoutUnblocksRead(t *testing.T) {
	serverDone := make(chan struct{})
	server := func(cs *TCPConn) error {
		defer close(serverDone)
		errc := make(chan error, 1)
		go func() {
			defer close(errc)
			go func() {
				// TODO: find a better way to wait
				// until we're blocked in the cs.Read

		return c
	}
	return value(c.Context, key)
}

func (c *cancelCtx) Done() <-chan struct{} {
	d := c.done.Load()
	if d != nil {
		return d.(chan struct{})
	}
	c.mu.Lock()
	defer c.mu.Unlock()
	d = c.done.Load()
	if d == nil {
		d = make(chan struct{})
		c.done.Store(d)
	}
	return d.(chan struct{})
}

func (c *cancelCtx) Err() error {
	c.mu.Lock()
	err := c.err

		w.typ(t.key)
		w.byte(']')
		w.typ(t.elem)

	case *Chan:
		var s string
		var parens bool
		switch t.dir {
		case SendRecv:
			s = "chan "
			// chan (<-chan T) requires parentheses
			if c, _ := t.elem.(*Chan); c != nil && c.dir == RecvOnly {
				parens = true
			}
		case SendOnly:
			s = "chan<- "
		case RecvOnly:
			s = "<-chan "
		default:
			w.error("unknown channel direction")
		}

	}

	readErrCh := make(chan error, 1)
	errCh := make(chan error, 2)

	server := newClientServerTest(t, mode, HandlerFunc(func(rw ResponseWriter, req *Request) {
		go func(body io.Reader) {
			_, err := body.Read(make([]byte, 100))
			readErrCh <- err
		}(req.Body)
		time.Sleep(500 * time.Millisecond)
	})).ts

	closeConn := make(chan bool)
	defer close(closeConn)
	go func() {

			}
			consolidatedReport.BucketStats[opts] = d
		}
	}
	return consolidatedReport
}

func (sys *NotificationSys) collectPeerMetrics(ctx context.Context, peerChannels []<-chan MetricV2, g *errgroup.Group) <-chan MetricV2 {
	ch := make(chan MetricV2)
	var wg sync.WaitGroup
	for index, err := range g.Wait() {
		if err != nil {
			if sys.peerClients[index] != nil {

		upstreamError:     make(chan error), // can be produced by recv and send
		downstreamError:   make(chan error), // can be produced by recv and send
		deltaRequestsChan: channels.NewUnbounded[*discovery.DeltaDiscoveryRequest](),
		// Allow a buffer of 1. This ensures we queue up at most 2 (one in process, 1 pending) responses before forwarding.
		deltaResponsesChan: make(chan *discovery.DeltaDiscoveryResponse, 1),