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fix negative slice index error in keymutex #84

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merged 1 commit into from Feb 21, 2019
Merged

fix negative slice index error in keymutex #84

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8 changes: 4 additions & 4 deletions keymutex/hashed.go
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Expand Up @@ -42,17 +42,17 @@ type hashedKeyMutex struct {

// Acquires a lock associated with the specified ID.
func (km *hashedKeyMutex) LockKey(id string) {
km.mutexes[km.hash(id)%len(km.mutexes)].Lock()
km.mutexes[km.hash(id)%uint32(len(km.mutexes))].Lock()
}

// Releases the lock associated with the specified ID.
func (km *hashedKeyMutex) UnlockKey(id string) error {
km.mutexes[km.hash(id)%len(km.mutexes)].Unlock()
km.mutexes[km.hash(id)%uint32(len(km.mutexes))].Unlock()
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And yes, this is fine.

return nil
}

func (km *hashedKeyMutex) hash(id string) int {
func (km *hashedKeyMutex) hash(id string) uint32 {
h := fnv.New32a()
h.Write([]byte(id))
return int(h.Sum32())
return h.Sum32()
}