}
		case ev := <-con.PushCh():
			pushEv := ev.(*Event)
			err := s.pushConnectionDelta(con, pushEv)
			pushEv.done()
			if err != nil {
				return err
			}
		case <-con.StopCh():
			return nil
		}
	}
}

// Compute and send the new configuration for a connection.
func (s *DiscoveryServer) pushConnectionDelta(con *Connection, pushEv *Event) error {
	pushRequest := pushEv.pushRequest

}

func (conn *Connection) Push(ev any) error {
	pushEv := ev.(*Event)
	err := conn.s.pushConnection(conn, pushEv)
	pushEv.done()
	return err
}

// processRequest handles one discovery request. This is currently called from the 'main' thread, which also
// handles 'push' requests and close - the code will eventually call the 'push' code, and it needs more mutex

			proxiesQueueTime.Record(time.Since(push.Start).Seconds())
			var closed <-chan struct{}
			if client.deltaStream != nil {
				closed = client.deltaStream.Context().Done()
			} else {
				closed = client.StreamDone()
			}
			go func() {
				pushEv := &Event{
					pushRequest: push,
					done:        doneFunc,
				}

				select {
				case client.PushCh() <- pushEv:
					return

	"istio.io/istio/pkg/env"
	"istio.io/istio/pkg/log"
)

// Define experimental features here.
var (
	// FilterGatewayClusterConfig controls if a subset of clusters(only those required) should be pushed to gateways
	FilterGatewayClusterConfig = env.Register("PILOT_FILTER_GATEWAY_CLUSTER_CONFIG", false,
		"If enabled, Pilot will send only clusters that referenced in gateway virtual services attached to gateway").Get()

func (s *sdsservice) register(rpcs *grpc.Server) {
	sds.RegisterSecretDiscoveryServiceServer(rpcs, s)
}

func (s *sdsservice) push(secretName string) {
	s.Lock()
	defer s.Unlock()
	for _, client := range s.clients {
		go func(client *Context) {
			select {
			case client.XdsConnection().PushCh() <- secretName:
			case <-client.XdsConnection().StreamDone():
			}
		}(client)
	}
}

func (p *abiDesc) assignArg(t *_type) {
	if t.Size_ > goarch.PtrSize {
		// We don't support this right now. In
		// stdcall/cdecl, 64-bit ints and doubles are
		// passed as two words (little endian); and
		// structs are pushed on the stack. In
		// fastcall, arguments larger than the word
		// size are passed by reference. On arm,
		// 8-byte aligned arguments round up to the
		// next even register and can be split across

	p.emitted = i
}

func (p *parseState) inline(s string) []Inline {
	s = trimSpaceTab(s)
	// Scan text looking for inlines.
	// Leaf inlines are converted immediately.
	// Non-leaf inlines have potential starts pushed on a stack while we await completion.
	// Links take priority over other emphasis, so the emphasis must be delayed.
	p.s = s
	p.list = nil
	p.emitted = 0
	var opens []int // indexes of open ![ and [ Plains in p.list

// stack switch, runtime.cgocallback saves the current SP as
// m.g0.sched.sp, so that any use of m.g0's stack during the execution
// of the callback will be done below the existing stack frames.
// Before overwriting m.g0.sched.sp, it pushes the old value on the
// m.g0 stack, so that it can be restored later.
//
// runtime.cgocallbackg (below) is now running on a real goroutine
// stack (not an m.g0 stack).  First it calls runtime.exitsyscall, which will

	// ones. White and grey objects may depend on white and black objects.
	// A dependency on a grey object indicates a cycle which may or may not be
	// valid.
	//
	// When objects turn grey, they are pushed on the object path (a stack);
	// they are popped again when they turn black. Thus, if a grey object (a
	// cycle) is encountered, it is on the object path, and all the objects

// At the time of fill/spill, the offset must be adjusted by the architecture-dependent
// adjustment to hardware SP that occurs in a call instruction.  E.g., for AMD64,
// at Offset+8 because the return address was pushed.
type RegSpill struct {
	Addr           Addr
	Reg            int16
	Spill, Unspill As
}

// A Func represents a Go function. If non-nil, it must be a *ir.Func.
type Func interface {