Stream forever with eviction-based per-stream loss detection

rx.go

@@ -18,19 +18,13 @@ type rxStats struct {
 	_        [24]byte
 }
 
-type streamState struct {
-	maxSeq atomic.Uint64
-	count  atomic.Uint64
-	_      [48]byte
-}
-
 type rxWorker struct {
 	fd      int
 	batch   int
 	cpu     int
 	spec    *frameSpec
 	stats   *rxStats
-	streams []streamState
+	streams []lossWindow
 	reports chan string
 	ready   *sync.WaitGroup
 }
@@ -68,14 +62,7 @@ func (w *rxWorker) run(done *atomic.Bool) {
 			w.stats.bytes.Add(uint64(len(buf)))
 
 			if int(p.stream) < len(w.streams) {
-				st := &w.streams[p.stream]
-				st.count.Add(1)
-				for {
-					old := st.maxSeq.Load()
-					if p.seq <= old || st.maxSeq.CompareAndSwap(old, p.seq) {
-						break
-					}
-				}
+				w.streams[p.stream].observe(p.seq)
 			}
 
 			if p.payLen > len(w.spec.ref) {