You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: pprof_posix.go
    path of file: ./repos/jiacrontab/pkg/pprof
    
    the code of the file until where you have to start completion: // +build !windows

package pprof

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

func listenSignal() {
	signChan := make(chan
    
func listenSignal() {
	signChan := make(chan os.Signal, 1)
	signal.Notify(signChan, syscall.SIGUSR1)
	for {
		<-signChan
		profile()
		memprofile()
		cpuprofile()
	}
}