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Merge pull request #14406 from karalabe/downloader-sensitive-code

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eth/downloader: fix a potential issue against future refactors
This commit is contained in:
Péter Szilágyi 2017-05-02 16:31:31 +03:00 committed by GitHub
commit 02a29060d2
1 changed files with 4 additions and 0 deletions
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4
eth/downloader/downloader.go
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@ -1491,6 +1491,10 @@ func (d *Downloader) qosTuner() {
func (d *Downloader) qosReduceConfidence() { func (d *Downloader) qosReduceConfidence() {
// If we have a single peer, confidence is always 1 // If we have a single peer, confidence is always 1
peers := uint64(d.peers.Len()) peers := uint64(d.peers.Len())
if peers == 0 {
// Ensure peer connectivity races don't catch us off guard
return
}
if peers == 1 { if peers == 1 {
atomic.StoreUint64(&d.rttConfidence, 1000000) atomic.StoreUint64(&d.rttConfidence, 1000000)
return return