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event: fix inconsistency in Lock and Unlock (#20933)

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Co-authored-by: Felix Lange <fjl@twurst.com>
This commit is contained in:
Boqin Qin 2020-04-17 20:51:38 +08:00 committed by GitHub
parent 7a63faf734
commit ca22d0761b
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1 changed files with 2 additions and 2 deletions
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4
event/event.go
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@ -104,6 +104,7 @@ func (mux *TypeMux) Post(ev interface{}) error {
// Stop blocks until all current deliveries have finished.
func (mux *TypeMux) Stop() {
mux.mutex.Lock()
defer mux.mutex.Unlock()
for _, subs := range mux.subm {
for _, sub := range subs {
sub.closewait()
@ -111,11 +112,11 @@ func (mux *TypeMux) Stop() {
}
mux.subm = nil
mux.stopped = true
mux.mutex.Unlock()
}
func (mux *TypeMux) del(s *TypeMuxSubscription) {
mux.mutex.Lock()
defer mux.mutex.Unlock()
for typ, subs := range mux.subm {
if pos := find(subs, s); pos >= 0 {
if len(subs) == 1 {
@ -125,7 +126,6 @@ func (mux *TypeMux) del(s *TypeMuxSubscription) {
}
}
}
s.mux.mutex.Unlock()
}
func find(slice []*TypeMuxSubscription, item *TypeMuxSubscription) int {