Have go dump a stack trace on USR1

profile.go

package main

import (
	"os"
	"os/signal"
	"runtime/pprof"
	"syscall"
)

func main() {
	sigchan := make(chan os.Signal)
	go func() {
		for _ = range sigchan {
			ps := pprof.Profiles()
			for _, pro := range ps {
				pro.WriteTo(os.Stderr, 2)
			}
		}
	}()
	signal.Notify(sigchan, syscall.SIGUSR1)
}