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les: avoid shutdown hang (#23139)

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This commit is contained in:
Martin Holst Swende 2021-07-01 14:01:19 +02:00 committed by GitHub
parent 3212fb6838
commit 6ed812db13
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 4 additions and 10 deletions
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14
les/servingqueue.go
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@ -159,27 +159,23 @@ func (sq *servingQueue) newTask(peer *clientPeer, maxTime uint64, priority int64
// run tokens from the token channel and allow the corresponding tasks to run
// without entering the priority queue.
func (sq *servingQueue) threadController() {
defer sq.wg.Done()
for {
token := make(runToken)
select {
case best := <-sq.queueBestCh:
best.tokenCh <- token
case <-sq.stopThreadCh:
sq.wg.Done()
return
case <-sq.quit:
sq.wg.Done()
return
}
<-token
select {
case <-sq.stopThreadCh:
sq.wg.Done()
return
case <-sq.quit:
sq.wg.Done()
return
default:
case <-token:
}
}
}
@ -298,6 +294,7 @@ func (sq *servingQueue) addTask(task *servingTask) {
// and always tries to send the highest priority task to queueBestCh. Successfully sent
// tasks are removed from the queue.
func (sq *servingQueue) queueLoop() {
defer sq.wg.Done()
for {
if sq.best != nil {
expTime := sq.best.expTime
@ -316,7 +313,6 @@ func (sq *servingQueue) queueLoop() {
sq.best, _ = sq.queue.PopItem().(*servingTask)
}
case <-sq.quit:
sq.wg.Done()
return
}
} else {
@ -324,7 +320,6 @@ func (sq *servingQueue) queueLoop() {
case task := <-sq.queueAddCh:
sq.addTask(task)
case <-sq.quit:
sq.wg.Done()
return
}
}
@ -335,6 +330,7 @@ func (sq *servingQueue) queueLoop() {
// of active thread controller goroutines.
func (sq *servingQueue) threadCountLoop() {
var threadCountTarget int
defer sq.wg.Done()
for {
for threadCountTarget > sq.threadCount {
sq.wg.Add(1)
@ -347,14 +343,12 @@ func (sq *servingQueue) threadCountLoop() {
case sq.stopThreadCh <- struct{}{}:
sq.threadCount--
case <-sq.quit:
sq.wg.Done()
return
}
} else {
select {
case threadCountTarget = <-sq.setThreadsCh:
case <-sq.quit:
sq.wg.Done()
return
}
}