eth/filters: remove use of event.TypeMux for pending logs (#20312)

miner/miner.go

@@ -182,3 +182,9 @@ func (miner *Miner) SetEtherbase(addr common.Address) {
 	miner.coinbase = addr
 	miner.worker.setEtherbase(addr)
 }
+
+// SubscribePendingLogs starts delivering logs from pending transactions
+// to the given channel.
+func (self *Miner) SubscribePendingLogs(ch chan<- []*types.Log) event.Subscription {
+	return self.worker.pendingLogsFeed.Subscribe(ch)
+}

miner/worker.go

@@ -128,6 +128,9 @@ type worker struct {
 	eth         Backend
 	chain       *core.BlockChain
 
+	// Feeds
+	pendingLogsFeed event.Feed
+
 	// Subscriptions
 	mux          *event.TypeMux
 	txsCh        chan core.NewTxsEvent
@@ -809,7 +812,7 @@ func (w *worker) commitTransactions(txs *types.TransactionsByPriceAndNonce, coin
 			cpy[i] = new(types.Log)
 			*cpy[i] = *l
 		}
-		go w.mux.Post(core.PendingLogsEvent{Logs: cpy})
+		w.pendingLogsFeed.Send(cpy)
 	}
 	// Notify resubmit loop to decrease resubmitting interval if current interval is larger
 	// than the user-specified one.