func (w *Watcher) wakeupReader() error {
e := syscall.PostQueuedCompletionStatus(w.port, 0, 0, nil)
if e != nil {
return os.NewSyscallError("PostQueuedCompletionStatus", e)
}
return nil
}
// Close resets the whole watcher object, closes all existing file descriptors,
// and sends stateCPClose state as completion key to the main watcher's loop.
func (r *readdcw) Close() (err error) {
r.Lock()
if !r.start {
r.Unlock()
return nil
}
for _, wd := range r.m {
wd.filter &^= onlyMachineStates
wd.filter |= stateCPClose
if e := wd.closeHandle(); e != nil && err == nil {
err = e
}
}
r.start = false
r.Unlock()
r.wg.Add(1)
if e := syscall.PostQueuedCompletionStatus(r.cph, 0, stateCPClose, nil); e != nil && err == nil {
return e
}
r.wg.Wait()
return
}