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mvcc: simplify watchable_store addVictim code

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This commit is contained in:
Sunny Liu 2021-09-24 10:57:30 +08:00 committed by Xiang Liu
parent 69015027b6
commit e7a09db019
1 changed files with 3 additions and 9 deletions
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12
server/storage/mvcc/watchable_store.go
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@ -358,7 +358,7 @@ func (s *watchableStore) syncWatchers() int {
tx.RUnlock()
evs := kvsToEvents(s.store.lg, wg, revs, vs)
var victims watcherBatch
victims := make(watcherBatch)
wb := newWatcherBatch(wg, evs)
for w := range wg.watchers {
w.minRev = curRev + 1
@ -378,9 +378,6 @@ func (s *watchableStore) syncWatchers() int {
if w.send(WatchResponse{WatchID: w.id, Events: eb.evs, Revision: curRev}) {
pendingEventsGauge.Add(float64(len(eb.evs)))
} else {
if victims == nil {
victims = make(watcherBatch)
}
w.victim = true
}
@ -432,7 +429,7 @@ func kvsToEvents(lg *zap.Logger, wg *watcherGroup, revs, vals [][]byte) (evs []m
// notify notifies the fact that given event at the given rev just happened to
// watchers that watch on the key of the event.
func (s *watchableStore) notify(rev int64, evs []mvccpb.Event) {
var victim watcherBatch
victim := make(watcherBatch)
for w, eb := range newWatcherBatch(&s.synced, evs) {
if eb.revs != 1 {
s.store.lg.Panic(
@ -445,9 +442,6 @@ func (s *watchableStore) notify(rev int64, evs []mvccpb.Event) {
} else {
// move slow watcher to victims
w.minRev = rev + 1
if victim == nil {
victim = make(watcherBatch)
}
w.victim = true
victim[w] = eb
s.synced.delete(w)
@ -458,7 +452,7 @@ func (s *watchableStore) notify(rev int64, evs []mvccpb.Event) {
}
func (s *watchableStore) addVictim(victim watcherBatch) {
if victim == nil {
if len(victim) == 0 {
return
}
s.victims = append(s.victims, victim)