enable pending block (ethereum#49)

Co-authored-by: Qi Zhou <qzhou64@gmail.com>

miner/worker.go

@@ -433,7 +433,6 @@ func (w *worker) newWorkLoop(recommit time.Duration) {
 	defer timer.Stop()
 	<-timer.C // discard the initial tick
 
-	_, isTm := w.engine.(*tendermint.Tendermint)
 	// commit aborts in-flight transaction execution with given signal and resubmits a new one.
 	commit := func(noempty bool, s int32) {
 		if interrupt != nil {
@@ -464,26 +463,16 @@ func (w *worker) newWorkLoop(recommit time.Duration) {
 		case <-w.startCh:
 			clearPending(w.chain.CurrentBlock().NumberU64())
 
-			if isTm {
-				continue
-			}
-
 			timestamp = time.Now().Unix()
 			commit(false, commitInterruptNewHead)
 
 		case head := <-w.chainHeadCh:
-
 			clearPending(head.Block.NumberU64())
-			if isTm {
-				continue
-			}
+
 			timestamp = time.Now().Unix()
 			commit(false, commitInterruptNewHead)
 
 		case <-timer.C:
-			if isTm {
-				continue
-			}
 			// If sealing is running resubmit a new work cycle periodically to pull in
 			// higher priced transactions. Disable this overhead for pending blocks.
 			if w.isRunning() && (w.chainConfig.Clique == nil || w.chainConfig.Clique.Period > 0) {
@@ -496,9 +485,6 @@ func (w *worker) newWorkLoop(recommit time.Duration) {
 			}
 
 		case interval := <-w.resubmitIntervalCh:
-			if isTm {
-				continue
-			}
 			// Adjust resubmit interval explicitly by user.
 			if interval < minRecommitInterval {
 				log.Warn("Sanitizing miner recommit interval", "provided", interval, "updated", minRecommitInterval)
@@ -512,9 +498,6 @@ func (w *worker) newWorkLoop(recommit time.Duration) {
 			}
 
 		case adjust := <-w.resubmitAdjustCh:
-			if isTm {
-				continue
-			}
 			// Adjust resubmit interval by feedback.
 			if adjust.inc {
 				before := recommit
@@ -1161,7 +1144,8 @@ func (w *worker) commitWork(interrupt *int32, noempty bool, timestamp int64) {
 // Note the assumption is held that the mutation is allowed to the passed env, do
 // the deep copy first.
 func (w *worker) commit(env *environment, interval func(), update bool, start time.Time) error {
-	if w.isRunning() {
+	_, isTm := w.engine.(*tendermint.Tendermint)
+	if w.isRunning() && !isTm {
 		if interval != nil {
 			interval()
 		}