func sync.runtime_SemacquireRWMutex

2 uses

	sync (current package)
		runtime.go#L28: func runtime_SemacquireRWMutex(s *uint32, lifo bool, skipframes int)
		rwmutex.go#L155: 		runtime_SemacquireRWMutex(&rw.writerSem, false, 0)