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eth/downloader: fix for Issue #16539 (#16546)

This commit is contained in:
Domino Valdano 2018-04-23 00:01:21 -07:00 committed by Péter Szilágyi
parent 744428cb03
commit 7cf83cee52
1 changed files with 11 additions and 3 deletions
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14
eth/downloader/downloader.go
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@ -306,7 +306,7 @@ func (d *Downloader) UnregisterPeer(id string) error {
d.cancelLock.RUnlock()
if master {
d.Cancel()
d.cancel()
}
return nil
}
@ -501,8 +501,10 @@ func (d *Downloader) spawnSync(fetchers []func() error) error {
return err
}
// Cancel cancels all of the operations and resets the queue.
func (d *Downloader) Cancel() {
// cancel aborts all of the operations and resets the queue. However, cancel does
// not wait for the running download goroutines to finish. This method should be
// used when cancelling the downloads from inside the downloader.
func (d *Downloader) cancel() {
// Close the current cancel channel
d.cancelLock.Lock()
if d.cancelCh != nil {
@ -514,6 +516,12 @@ func (d *Downloader) Cancel() {
}
}
d.cancelLock.Unlock()
}
// Cancel aborts all of the operations and waits for all download goroutines to
// finish before returning.
func (d *Downloader) Cancel() {
d.cancel()
d.cancelWg.Wait()
}