how to get function name?

[Johnson]

i'm trying to use the function name as a variable within the function.


something like:


func helloHandler(w http.ResponseWriter, r *http.Request) {
funcname := ??????
fmt.Fprintf(w, "the function name is %s", funcname)
}

any tips?

[John Asmuth]

It looks like "helloHandler", to me!

But you can use runtime.Caller() to finagle this information out of the sytem.

[Glenn Brown]

> i'm trying to use the function name as a variable within the function.

Caller() in pkg/runtime returns the Program Counter.
PCToFunc() in debug/gosym converts the PC to a function name.
(But I wonder if it works on strip'd binaries.)

--Glenn

[Johnson]

I'm still having trouble, what am I doing wrong?

I was able to get the file name with the below: the function name is
code/hello.go

_, funcname, _, _ := runtime.Caller(0)

fmt.Fprintf(w, "the function name is %s", funcname)

trying to pass the PC to gosym.PCToFunc is throwing this error:

funcname, _, _, _ := runtime.Caller(0)
fmt.Fprintf(w, "the function name is %v", gosym.PCToFunc(funcname))

[Kyle Lemons]

Not sure why you need gosym...

http://play.golang.org/p/teu5CnHoek