const sync.rwmutexMaxReaders

8 uses

	sync (current package)
		rwmutex.go#L44: const rwmutexMaxReaders = 1 << 30
		rwmutex.go#L127: 	if r+1 == 0 || r+1 == -rwmutexMaxReaders {
		rwmutex.go#L149: 	r := rw.readerCount.Add(-rwmutexMaxReaders) + rwmutexMaxReaders
		rwmutex.go#L177: 	if !rw.readerCount.CompareAndSwap(0, -rwmutexMaxReaders) {
		rwmutex.go#L206: 	r := rw.readerCount.Add(rwmutexMaxReaders)
		rwmutex.go#L207: 	if r >= rwmutexMaxReaders {
		rwmutex.go#L232: 	return r < 0 && r+rwmutexMaxReaders > 0