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eth/gasprice: ensure goroutine that that purges cache upon reorg doesn't hang after dependent subscription is closed

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This commit is contained in:
Jared Wasinger 2025-01-14 14:32:29 +08:00
parent 864e717b56
commit 0510fc8662
1 changed files with 10 additions and 5 deletions
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15
eth/gasprice/gasprice.go
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@ -120,14 +120,19 @@ func NewOracle(backend OracleBackend, params Config, startPrice *big.Int) *Oracl
cache := lru.NewCache[cacheKey, processedFees](2048)
headEvent := make(chan core.ChainHeadEvent, 1)
backend.SubscribeChainHeadEvent(headEvent)
sub := backend.SubscribeChainHeadEvent(headEvent)
go func() {
var lastHead common.Hash
for ev := range headEvent {
if ev.Header.ParentHash != lastHead {
cache.Purge()
for {
select {
case ev := <-headEvent:
if ev.Header.ParentHash != lastHead {
cache.Purge()
}
lastHead = ev.Header.Hash()
case <-sub.Err():
return
}
lastHead = ev.Header.Hash()
}
}()