snapshot of https://github.com/livekit/livekit.git @ 08c5433449c106943231037d0b892895f6e92d3b (2026-09-15)

pkg/sfu/pacer/no_queue.go

@@ -0,0 +1,90 @@
+// Copyright 2023 LiveKit, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package pacer
+
+import (
+	"sync"
+
+	"github.com/frostbyte73/core"
+	"github.com/gammazero/deque"
+	"github.com/livekit/livekit-server/pkg/sfu/bwe"
+	"github.com/livekit/protocol/logger"
+)
+
+type NoQueue struct {
+	*Base
+
+	logger logger.Logger
+
+	lock    sync.RWMutex
+	packets deque.Deque[*Packet]
+	wake    chan struct{}
+	stop    core.Fuse
+}
+
+func NewNoQueue(logger logger.Logger, bwe bwe.BWE) *NoQueue {
+	n := &NoQueue{
+		Base:   NewBase(logger, bwe),
+		logger: logger,
+		wake:   make(chan struct{}, 1),
+	}
+	n.packets.SetBaseCap(512)
+
+	go n.sendWorker()
+	return n
+}
+
+func (n *NoQueue) Stop() {
+	n.stop.Break()
+
+	select {
+	case n.wake <- struct{}{}:
+	default:
+	}
+}
+
+func (n *NoQueue) Enqueue(p *Packet) {
+	n.lock.Lock()
+	n.packets.PushBack(p)
+	n.lock.Unlock()
+
+	select {
+	case n.wake <- struct{}{}:
+	default:
+	}
+}
+
+func (n *NoQueue) sendWorker() {
+	for {
+		<-n.wake
+		for {
+			if n.stop.IsBroken() {
+				return
+			}
+
+			n.lock.Lock()
+			if n.packets.Len() == 0 {
+				n.lock.Unlock()
+				break
+			}
+			p := n.packets.PopFront()
+			n.lock.Unlock()
+
+			n.Base.SendPacket(p)
+		}
+	}
+}
+
+// ------------------------------------------------