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Merge pull request #994 from karalabe/fix-cancel-double-close

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eth/downloader: fix cancel channel double close
This commit is contained in:
Jeffrey Wilcke 2015-05-15 10:15:35 -07:00
commit 164ba56a60
1 changed files with 8 additions and 3 deletions
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11
eth/downloader/downloader.go
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@ -212,9 +212,14 @@ func (d *Downloader) Cancel() bool {
return false return false
} }
// Close the current cancel channel // Close the current cancel channel
d.cancelLock.RLock() d.cancelLock.Lock()
close(d.cancelCh) select {
d.cancelLock.RUnlock() case <-d.cancelCh:
// Channel was already closed
default:
close(d.cancelCh)
}
d.cancelLock.Unlock()
// reset the queue // reset the queue
d.queue.Reset() d.queue.Reset()