hard workin go routines

main.go

package main

import (
	"fmt"
	"os"
	"os/signal"
	"syscall"
	"time"
)

func work() {
	fmt.Println("workin' hard")
	time.Sleep(4 * time.Second)
}

func main() {
	// needs to be buffered so we can exit
  	// if this is unbuffered, ^C never reaches closing time
	kc := make(chan os.Signal, 1)
	signal.Notify(kc, syscall.SIGINT, syscall.SIGTERM)

	ch := make(chan bool)
	go func() {
		for {
			ch <- false
			time.Sleep(3 * time.Second) // work is coming in faster than the worker can handle it!
		}
	}()

	for {
		select {
		case <-kc:
			fmt.Println("closing time")
			return
		case <-ch:
			work()
		}
	}
}