shutdown

determinism.go

package main

type Server struct {
	shutdown chan struct{}
	close    chan struct{}
}

func NewServer() *Server {
	s := &Server{
		shutdown: make(chan struct{}, 0),
		close:    make(chan struct{}, 0),
	}
	go s.loop()
	return s
}

func (s *Server) loop() {
	defer func() {
		s.close <- struct{}{}	
	}()
	for {
		select {
		case <-s.shutdown:
			// do any cleanup
			return
		case f <- whatever:
			// do some stuf....
			f()
		}
	}
}

func (s *Server) Stop() {
	s.shutdown <- struct{}{}
	<-s.close
}

mb better close(s.shutdown)?

mb better close(s.shutdown)?

for this particular case either way is ok

if it's used in multiple goroutines for stop purpose then yes, we need to use close instead