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consensus/ethash: ensure future cache/dataset is in the lru cache

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This commit is contained in:
Felix Lange 2018-01-15 13:58:35 +01:00
parent 0326bb8824
commit ca57aa1670
1 changed files with 4 additions and 3 deletions
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5
consensus/ethash/ethash.go
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@ -177,10 +177,11 @@ func (lru *lru) get(epoch uint64) (item, future interface{}) {
item, ok := lru.cache.Get(epoch)
if !ok {
if lru.future > 0 && lru.future == epoch {
return lru.futureItem, nil
}
item = lru.future
} else {
log.Trace("Requiring new ethash "+lru.what, "epoch", epoch)
item = lru.new(epoch)
}
lru.cache.Add(epoch, item)
}
// Update the 'future item' if epoch is larger than previously seen.