36 lines
460 B
Go
36 lines
460 B
Go
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package main
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import (
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"fmt"
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"runtime"
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"sync"
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)
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func coroutine(i int, start, finish *sync.WaitGroup) {
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defer finish.Done()
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j := i * 2
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if i == 99 {
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runtime.Breakpoint()
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start.Done()
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} else {
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start.Wait()
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}
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fmt.Println("hello ", i, j)
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fmt.Println("goodbye", i, j)
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}
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func main() {
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i := 0
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var start, finish sync.WaitGroup
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start.Add(1)
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for ; i < 100; i++ {
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finish.Add(1)
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go coroutine(i, &start, &finish)
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}
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finish.Wait()
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println(i)
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}
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