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eth: avoid useless sync in fast sync

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This commit is contained in:
rjl493456442 2018-03-08 15:48:08 +08:00
parent ea04ad00fa
commit 920c49de87
3 changed files with 10 additions and 2 deletions
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2
eth/downloader/downloader.go
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@ -1300,7 +1300,7 @@ func (d *Downloader) processHeaders(origin uint64, pivot uint64, td *big.Int) er
// Update the highest block number we know if a higher one is found.
d.syncStatsLock.Lock()
if d.syncStatsChainHeight < origin {
d.syncStatsChainHeight = origin
d.syncStatsChainHeight = origin - 1
}
d.syncStatsLock.Unlock()

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

2
internal/ethapi/api.go
View file

@ -80,7 +80,7 @@ func (s *PublicEthereumAPI) Syncing() (interface{}, error) {
progress := s.b.Downloader().Progress()
// Return not syncing if the synchronisation already completed
if !s.b.Downloader().Synchronising() {
if progress.CurrentBlock >= progress.HighestBlock {
return false, nil
}
// Otherwise gather the block sync stats