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eth: update higest block we know during the sync if a higher was found (#16283)

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* eth: update higest block we know during the sync if a higher was found

* eth: avoid useless sync in fast sync
This commit is contained in:
gary rong 2018-03-09 17:51:30 +08:00 committed by Péter Szilágyi
parent 307846d046
commit 77da203547
2 changed files with 16 additions and 0 deletions
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8
eth/downloader/downloader.go
View File

@ -1296,6 +1296,14 @@ func (d *Downloader) processHeaders(origin uint64, pivot uint64, td *big.Int) er
headers = headers[limit:]
origin += uint64(limit)
}
// Update the highest block number we know if a higher one is found.
d.syncStatsLock.Lock()
if d.syncStatsChainHeight < origin {
d.syncStatsChainHeight = origin - 1
}
d.syncStatsLock.Unlock()
// Signal the content downloaders of the availablility of new tasks
for _, ch := range []chan bool{d.bodyWakeCh, d.receiptWakeCh} {
select {

8
eth/sync.go
View File

@ -188,6 +188,14 @@ func (pm *ProtocolManager) synchronise(peer *peer) {
atomic.StoreUint32(&pm.fastSync, 1)
mode = downloader.FastSync
}
if mode == downloader.FastSync {
// Make sure the peer's total difficulty we are synchronizing is higher.
if pm.blockchain.GetTdByHash(pm.blockchain.CurrentFastBlock().Hash()).Cmp(pTd) >= 0 {
return
}
}
// Run the sync cycle, and disable fast sync if we've went past the pivot block
if err := pm.downloader.Synchronise(peer.id, pHead, pTd, mode); err != nil {
return