Goroutine in go language learning




  • Lightweight “thread”
  • Non preemptive multi task processing, in which coprocessor takes the initiative to hand over control
  • Compiler / interpreter / virtual machine level multitasking, non operating system
  • Multiple coroutines can be executed on one or more threads

Go keyword opens a coroutine

func main() {
	for i := 0; i < 10; i++ {
		go func(i int) {
			for {

Possible switching point of gorutine (transfer control)

  • I/O,select
  • channel
  • Waiting for lock
  • Function call (sometimes)
  • routime.Goshed()
  • It’s just a reference. It can’t guarantee the switch or not switch in other places

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