// responsiveness on machines with high CPU utilization.
func createWindowsJobObject(pc uint32) (windows.Handle, error) {
	job, err := windows.CreateJobObject(nil, nil)
	if err != nil {
		return windows.InvalidHandle, fmt.Errorf("windows.CreateJobObject failed: %w", err)
	}
	limitInfo := windows.JOBOBJECT_BASIC_LIMIT_INFORMATION{
		LimitFlags:    windows.JOB_OBJECT_LIMIT_PRIORITY_CLASS,
		PriorityClass: pc,
	}

//sys	ReleaseMutex(mutex Handle) (err error) = kernel32.ReleaseMutex
//sys	SleepEx(milliseconds uint32, alertable bool) (ret uint32) = kernel32.SleepEx
//sys	CreateJobObject(jobAttr *SecurityAttributes, name *uint16) (handle Handle, err error) = kernel32.CreateJobObjectW
//sys	AssignProcessToJobObject(job Handle, process Handle) (err error) = kernel32.AssignProcessToJobObject

	handle = Handle(r0)
	if handle == 0 {
		err = errnoErr(e1)
	}
	return
}

func CreateJobObject(jobAttr *SecurityAttributes, name *uint16) (handle Handle, err error) {
	r0, _, e1 := syscall.Syscall(procCreateJobObjectW.Addr(), 2, uintptr(unsafe.Pointer(jobAttr)), uintptr(unsafe.Pointer(name)), 0)
	handle = Handle(r0)