package main

import (
	"time"
	"net/http"
	"net/http/pprof"
	"strconv"
	"os"
	"net"
)

func main() {
	ListenPprof()

	go foo()

	time.Sleep(1*time.Hour)
}

func foo() {
	a := make(chan struct{})

	select {
	case <-a:
	}

	_ = 0
}

func ListenPprof() {
	path := "@/pprof/" + strconv.Itoa(os.Getpid())
	l, err := net.Listen("unix", path)
	if err != nil {
		panic(err)
	}
	mux := http.NewServeMux()
	mux.Handle("/debug/pprof/", http.HandlerFunc(pprof.Index))
	mux.Handle("/debug/pprof/cmdline", http.HandlerFunc(pprof.Cmdline))
	mux.Handle("/debug/pprof/profile", http.HandlerFunc(pprof.Profile))
	mux.Handle("/debug/pprof/symbol", http.HandlerFunc(pprof.Symbol))
	// ignore errors from Serve
	go http.Serve(l, mux)
}