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Is there any way to get the ids of all the currently surviving goroutines, or to judge the survival status of the current goroutines based on the id of current goroutine? #42629

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sjy3 opened this issue Nov 16, 2020 · 1 comment
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Is there any way to get the ids of all the currently surviving goroutines, or to judge the survival status of the current goroutines based on the id of current goroutine? #42629

sjy3 opened this issue Nov 16, 2020 · 1 comment
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@sjy3
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sjy3 commented Nov 16, 2020 •
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I created a map to store some information the current goroutine, the key is the id of the current goroutine, and I plan to delete the key-value after the goroutine dies. How can I get the status of the goroutine?

I get the goroutine Id by

func GetGoroutineId() int64 {
	var (
		buf [64]byte
		n   = runtime.Stack(buf[:], false)
		stk = strings.TrimPrefix(string(buf[:n]), "goroutine ")
	)
	idField := strings.Fields(stk)[0]
	id, err := strconv.Atoi(idField)
	if err != nil {
		log.Errorf("can not get goroutine id: %v", err)
	}

	return int64(id)
}

What version of Go are you using (go version)?

$ go version 1.15
@martisch
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martisch commented Nov 16, 2020 •
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See https://golang.org/doc/faq#no_goroutine_id why goroutine IDs are not supported directly.

Unlike many projects, the Go project does not use GitHub Issues for general discussion or asking questions.

See https://github.com/golang/go/wiki/Questions for links to places to ask questions.

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@martisch @gopherbot @sjy3