func runtime_pollServerInit()
func runtime_pollOpen(fd uintptr) (uintptr, int)
func runtime_pollClose(ctx uintptr)
func runtime_pollWait(ctx uintptr, mode int) int
func runtime_pollWaitCanceled(ctx uintptr, mode int)
func runtime_pollReset(ctx uintptr, mode int) int
func runtime_pollSetDeadline(ctx uintptr, d int64, mode int)
func runtime_pollUnblock(ctx uintptr)
func runtime_isPollServerDescriptor(fd uintptr) bool

type pollDesc struct {

	pd.link = c.first
	c.first = pd
	unlock(&c.lock)
}

// poll_runtime_pollReset, which is internal/poll.runtime_pollReset,
// prepares a descriptor for polling in mode, which is 'r' or 'w'.
// This returns an error code; the codes are defined above.
//
//go:linkname poll_runtime_pollReset internal/poll.runtime_pollReset
func poll_runtime_pollReset(pd *pollDesc, mode int) int {
	errcode := netpollcheckerr(pd, int32(mode))