Aufrufstapel-Frame-Extraktion mit runtime.Callers

package main
 
import (
	"fmt"
	"runtime"
)
 
type StackFrame struct {
	Function string
	File     string
	Line     int
}
 
func CaptureCaller(skip int) StackFrame {
	pc := make([]uintptr, 1)
	n := runtime.Callers(skip+1, pc)
	if n == 0 {
		return StackFrame{}
	}
 
	frames := runtime.CallersFrames(pc[:n])
	frame, _ := frames.Next()
	return StackFrame{
		Function: frame.Function,
		File:     frame.File,
		Line:     frame.Line,
	}
}
 
func TraceableError() {
	frame := CaptureCaller(1)
	fmt.Printf("Error occurred at %s in %s:%d\n", frame.Function, frame.File, frame.Line)
}
 
func main() {
	TraceableError()
}