for i := 0; i < maskbits; i++ {
		newmask := mask & ^(1 << uint(i))
		if newmask != mask {
			return newmask, nil
		}

	}
	panic("not reached")
}

func resumeChildThread(kernel32 *syscall.DLL, childpid int) error {
	_OpenThread := kernel32.MustFindProc("OpenThread")
	_ResumeThread := kernel32.MustFindProc("ResumeThread")
	_Thread32First := kernel32.MustFindProc("Thread32First")

// cloneArgs holds arguments for clone3 Linux syscall.
type cloneArgs struct {
	flags      uint64 // Flags bit mask
	pidFD      uint64 // Where to store PID file descriptor (int *)
	childTID   uint64 // Where to store child TID, in child's memory (pid_t *)
	parentTID  uint64 // Where to store child TID, in parent's memory (pid_t *)
	exitSignal uint64 // Signal to deliver to parent on child termination