import (
	_ "unsafe"
)

//go:linkname runtime_ignoreHangup internal/poll.runtime_ignoreHangup
func runtime_ignoreHangup() {
	getg().m.ignoreHangup = true
}

//go:linkname runtime_unignoreHangup internal/poll.runtime_unignoreHangup
func runtime_unignoreHangup(sig string) {
	getg().m.ignoreHangup = false
}

func ignoredNote(note *byte) bool {
	if note == nil {
		return false
	}
	if gostringnocopy(note) != "hangup" {

		// Go runtime.
		runtime.LockOSThread()
		runtime_ignoreHangup()
		aio.pid = syscall.Getpid()
		aio.mu.Unlock()

		n, err := fn(b)

		aio.mu.Lock()
		aio.pid = -1
		runtime_unignoreHangup()
		aio.mu.Unlock()

		aio.res <- result{n, err}
	}()
	return aio
}

// Cancel interrupts the I/O operation, causing
// the Wait function to return.
func (aio *asyncIO) Cancel() {