sync.Mutex.sema (field)

4 uses

	sync (current package)
		mutex.go#L36: 	sema  uint32
		mutex.go#L171: 			runtime_SemacquireMutex(&m.sema, queueLifo, 1)
		mutex.go#L246: 				runtime_Semrelease(&m.sema, false, 1)
		mutex.go#L257: 		runtime_Semrelease(&m.sema, true, 1)