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core/txpool: ignore nil sub when subpool have been shut down

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This commit is contained in:
buddh0 2024-01-25 16:11:54 +08:00
parent 99dc3fe118
commit ebe0ff0a47
1 changed files with 6 additions and 3 deletions
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9
core/txpool/txpool.go
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@ -366,9 +366,12 @@ func (p *TxPool) Pending(enforceTips bool) map[common.Address][]*LazyTransaction
// SubscribeTransactions registers a subscription for new transaction events,
// supporting feeding only newly seen or also resurrected transactions.
func (p *TxPool) SubscribeTransactions(ch chan<- core.NewTxsEvent, reorgs bool) event.Subscription {
subs := make([]event.Subscription, len(p.subpools))
for i, subpool := range p.subpools {
subs[i] = subpool.SubscribeTransactions(ch, reorgs)
subs := make([]event.Subscription, 0, len(p.subpools))
for _, subpool := range p.subpools {
sub := subpool.SubscribeTransactions(ch, reorgs)
if sub != nil { // sub will be nil when subpool have been shut down
subs = append(subs, sub)
}
}
return p.subs.Track(event.JoinSubscriptions(subs...))
}