const sync.rwmutexMaxReaders

8 uses

	sync (current package)
		rwmutex.go#L47: const rwmutexMaxReaders = 1 << 30
		rwmutex.go#L130: 	if r+1 == 0 || r+1 == -rwmutexMaxReaders {
		rwmutex.go#L152: 	r := rw.readerCount.Add(-rwmutexMaxReaders) + rwmutexMaxReaders
		rwmutex.go#L180: 	if !rw.readerCount.CompareAndSwap(0, -rwmutexMaxReaders) {
		rwmutex.go#L209: 	r := rw.readerCount.Add(rwmutexMaxReaders)
		rwmutex.go#L210: 	if r >= rwmutexMaxReaders {
		rwmutex.go#L235: 	return r < 0 && r+rwmutexMaxReaders > 0