Goroutine ID for debugging purposes

Manali_Holankar · February 20, 2020, 4:37pm

Hello, I want to add logging/debugging to our app server, and I need goroutine ID for that (just for logging purposes).
There is code out there, which pretty much does what is being done below.

github.com

golang/net/blob/master/http2/gotrack.go#L51


	if !DebugGoroutines {
		return
	}
	if curGoroutineID() == uint64(g) {
		panic("running on the wrong goroutine")
	}
}


var goroutineSpace = []byte("goroutine ")


func curGoroutineID() uint64 {
	bp := littleBuf.Get().(*[]byte)
	defer littleBuf.Put(bp)
	b := *bp
	b = b[:runtime.Stack(b, false)]
	// Parse the 4707 out of "goroutine 4707 ["
	b = bytes.TrimPrefix(b, goroutineSpace)
	i := bytes.IndexByte(b, ' ')
	if i < 0 {
		panic(fmt.Sprintf("No space found in %q", b))
	}

Is there any plan of giving us the GoRoutineID from go-sdk?

lutzhorn · February 20, 2020, 7:34pm

This code looks like an ugly hack.

Can you tell use why exactly you need to acces the ID of a goroutine?

Manali_Holankar · February 20, 2020, 8:22pm

In our API-Server, for ease of debugging we want to put the goroutine id so we can differentiate the logs and debug problems more easily. We want to just log the go-routine id in all the debug messages.

system · May 20, 2020, 8:35pm

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