type sync.rlocker

4 uses

	sync (current package)
		rwmutex.go#L158: 	return (*rlocker)(rw)
		rwmutex.go#L161: type rlocker RWMutex
		rwmutex.go#L163: func (r *rlocker) Lock()   { (*RWMutex)(r).RLock() }
		rwmutex.go#L164: func (r *rlocker) Unlock() { (*RWMutex)(r).RUnlock() }