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Merge pull request #4885 from ipfs/fix/visit-when-asked

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only visit nodes in EnumerateChildrenAsync when asked
This commit is contained in:
Whyrusleeping
2018-03-29 16:35:34 -07:00
committed by GitHub
parent 5770bf8d6f 08388e739a
commit d82bf5f59b
1 changed files with 8 additions and 8 deletions
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16
merkledag/merkledag.go
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@ -319,17 +319,17 @@ func EnumerateChildrenAsync(ctx context.Context, getLinks GetLinks, c *cid.Cid,
for i := 0; i < FetchGraphConcurrency; i++ { for i := 0; i < FetchGraphConcurrency; i++ {
go func() { go func() {
for ic := range feed { for ic := range feed {
links, err := getLinks(ctx, ic)
if err != nil {
errChan <- err
return
}
setlk.Lock() setlk.Lock()
unseen := visit(ic) shouldVisit := visit(ic)
setlk.Unlock() setlk.Unlock()
if unseen { if shouldVisit {
links, err := getLinks(ctx, ic)
if err != nil {
errChan <- err
return
}
select { select {
case out <- links: case out <- links:
case <-fetchersCtx.Done(): case <-fetchersCtx.Done():