程序可用来定时执行一些任务,并通过信号量处理,在被强制中断时,也能做相应警告及清理处理.
package main //信号量与定时器 //author: Xiong Chuan Liang //date: 2015-2-25 import "fmt" import "os" import "os/signal" import "time" func main() { sigs := make(chan os.Signal,1) done := make(chan bool,1) signal.Notify(sigs,os.Interrupt,os.Kill) go func() { sig := <-sigs switch sig { case os.Interrupt: fmt.Println("signal: Interrupt") case os.Kill: fmt.Println("signal: Kill") default: fmt.Println("signal: Others") } done <- true }() fmt.Println("awaiting signal") //main().... go JobTicker(done) <-done close(done) //app.Exit() fmt.Println("exiting") } func JobTicker(done <-chan bool) { ticker := time.NewTicker(time.Second) defer ticker.Stop() for { select { case <-done: return case <-ticker.C: fmt.Println("job......") } } }
如果按 ctrl-C 则结果如下:
awaiting signal job...... job...... signal: Interrupt interrupt exiting
Go by Example: Signals: https://gobyexample.com/signals
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