Setting Process name in Go

main.go

func SetProcessName(name string) error {
  argv0str := (*reflect.StringHeader)(unsafe.Pointer(&os.Args[0]))
	argv0 := (*[1 << 30]byte)(unsafe.Pointer(argv0str.Data))[:argv0str.Len]

	n := copy(argv0, name)
	if n < len(argv0) {
		argv0[n] = 0
	}
  
  // Syscall PRCTL, not working on Darwin for me
	// bytes := append([]byte(name), 0)
	// ptr := unsafe.Pointer(&bytes[0])

	// if _, _, errno := syscall.RawSyscall6(syscall.SYS_PRCTL, syscall.PR_SET_NAME, uintptr(ptr), 0, 0, 0, 0); errno != 0 {
	// 	return syscall.Errno(errno)
	// }
	return nil
}