"os"
	"os/exec"
	"path/filepath"
	"syscall"
	"testing"
	"time"
)

// TestUsingVDSO tests that we are actually using the VDSO to fetch
// the time.
func TestUsingVDSO(t *testing.T) {
	const calls = 100

	if os.Getenv("GO_WANT_HELPER_PROCESS") == "1" {
		// Fetch the time a lot.
		var total int64
		for i := 0; i < calls; i++ {
			total += time.Now().UnixNano()
		}
		os.Exit(0)
	}

	t.Parallel()

type Timespec struct {
	Sec  int32
	Nsec int32
}

type Timeval struct {
	Sec  int32
	Usec int32
}

type Timeval32 struct {
	Sec  int32
	Usec int32
}

type Timex struct{}

type Time_t int32

type Tms struct{}

type Utimbuf struct {
	Actime  int32
	Modtime int32
}

type Timezone struct {
	Minuteswest int32
	Dsttime     int32
}

type Rusage struct {

				return fmt.Errorf("g %d is not running while unpark (time %d)", ev.G, ev.Ts)
			}
			if ev.P != TimerP && p.g != ev.G {
				return fmt.Errorf("p %d is not running g %d while unpark (time %d)", ev.P, ev.G, ev.Ts)
			}
			g1 := gs[ev.Args[0]]
			if g1.state != gWaiting {
				return fmt.Errorf("g %d is not waiting before unpark (time %d)", ev.Args[0], ev.Ts)
			}

			// after implementing use-waypoint which decouples waypoint creation, wl pod creation
			// user specifying waypoint use. Without this we're not getting correct waypoint config
			// in a timely manner
			return true
		}
		// Otherwise, only handle full pushes (skip endpoint-only updates)
		if !req.Full {
			return false
		}
	default:
		if !req.Full {
			// CDS only handles full push

	if errno != 0 {
		return 0, errno
	}
	return newoffset, nil
}

//sys	futimesat(dirfd int, path string, times *[2]Timeval) (err error)
//sysnb	Gettimeofday(tv *Timeval) (err error)
//sysnb	Time(t *Time_t) (tt Time_t, err error)
//sys	Utime(path string, buf *Utimbuf) (err error)
//sys	utimes(path string, times *[2]Timeval) (err error)

// On x86 Linux, all the socket calls go through an extra indirection,

type Timespec struct {
	Sec  int64
	Nsec int64
}

type Timeval struct {
	Sec  int64
	Usec int32
	_    [4]byte
}

type Timeval32 struct {
	Sec  int32
	Usec int32
}

type Timex struct{}

type Time_t int64

type Tms struct{}

type Utimbuf struct {
	Actime  int64
	Modtime int64
}

type Timezone struct {
	Minuteswest int32
	Dsttime     int32
}

type Rusage struct {

	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Time(t *Time_t) (tt Time_t, err error) {
	r0, _, e1 := RawSyscall(SYS_TIME, uintptr(unsafe.Pointer(t)), 0, 0)
	tt = Time_t(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Time(t *Time_t) (tt Time_t, err error) {
	r0, _, e1 := RawSyscall(SYS_TIME, uintptr(unsafe.Pointer(t)), 0, 0)
	tt = Time_t(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Time(t *Time_t) (tt Time_t, err error) {
	r0, _, e1 := RawSyscall(SYS_TIME, uintptr(unsafe.Pointer(t)), 0, 0)
	tt = Time_t(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

	in.pos = pos
	var partial totalUtil
	if time != util[pos].Time {
		partial = totalUtilOf(util[pos].Util, time-util[pos].Time)
	}
	return in.u.sums[pos] + partial
}

// next returns the smallest time t' > time of a change in the
// utilization function.
func (in *integrator) next(time int64) int64 {
	for _, u := range in.u.util[in.pos:] {
		if u.Time > time {
			return u.Time
		}
	}
	return 1<<63 - 1
}