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https://github.com/ipfs/kubo.git
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92d08db7a5
- updated go-ctxgroup and goprocess ctxgroup: AddChildGroup was changed to AddChild. Used in two files: - p2p/net/mock/mock_net.go - routing/dht/dht.go - updated context from hg repo to git prev. commit in hg was ad01a6fcc8a19d3a4478c836895ffe883bd2ceab. (context: make parentCancelCtx iterative) represents commit 84f8955a887232b6308d79c68b8db44f64df455c in git repo - updated context to master (b6fdb7d8a4ccefede406f8fe0f017fb58265054c) Aaron Jacobs (2): net/context: Don't accept a context in the DoSomethingSlow example. context: Be clear that users must cancel the result of WithCancel. Andrew Gerrand (1): go.net: use golang.org/x/... import paths Bryan C. Mills (1): net/context: Don't leak goroutines in Done example. Damien Neil (1): context: fix removal of cancelled timer contexts from parent David Symonds (2): context: Fix WithValue example code. net: add import comments. Sameer Ajmani (1): context: fix TestAllocs to account for ints in interfaces
85 lines
1.7 KiB
Go
85 lines
1.7 KiB
Go
package queue
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import (
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context "github.com/jbenet/go-ipfs/Godeps/_workspace/src/golang.org/x/net/context"
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peer "github.com/jbenet/go-ipfs/p2p/peer"
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eventlog "github.com/jbenet/go-ipfs/thirdparty/eventlog"
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)
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var log = eventlog.Logger("peerqueue")
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// ChanQueue makes any PeerQueue synchronizable through channels.
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type ChanQueue struct {
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Queue PeerQueue
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EnqChan chan<- peer.ID
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DeqChan <-chan peer.ID
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}
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// NewChanQueue creates a ChanQueue by wrapping pq.
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func NewChanQueue(ctx context.Context, pq PeerQueue) *ChanQueue {
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cq := &ChanQueue{Queue: pq}
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cq.process(ctx)
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return cq
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}
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func (cq *ChanQueue) process(ctx context.Context) {
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// construct the channels here to be able to use them bidirectionally
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enqChan := make(chan peer.ID)
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deqChan := make(chan peer.ID)
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cq.EnqChan = enqChan
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cq.DeqChan = deqChan
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go func() {
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log.Debug("processing")
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defer log.Debug("closed")
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defer close(deqChan)
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var next peer.ID
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var item peer.ID
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var more bool
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for {
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if cq.Queue.Len() == 0 {
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// log.Debug("wait for enqueue")
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select {
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case next, more = <-enqChan:
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if !more {
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return
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}
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// log.Debug("got", next)
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case <-ctx.Done():
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return
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}
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} else {
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next = cq.Queue.Dequeue()
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// log.Debug("peek", next)
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}
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select {
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case item, more = <-enqChan:
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if !more {
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if cq.Queue.Len() > 0 {
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return // we're done done.
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}
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enqChan = nil // closed, so no use.
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}
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// log.Debug("got", item)
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cq.Queue.Enqueue(item)
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cq.Queue.Enqueue(next) // order may have changed.
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next = ""
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case deqChan <- next:
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// log.Debug("dequeued", next)
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next = ""
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case <-ctx.Done():
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return
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}
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}
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}()
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}
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