func printlock() {
	mp := getg().m
	mp.locks++ // do not reschedule between printlock++ and lock(&debuglock).
	mp.printlock++
	if mp.printlock == 1 {
		lock(&debuglock)
	}
	mp.locks-- // now we know debuglock is held and holding up mp.locks for us.
}

func printunlock() {
	mp := getg().m
	mp.printlock--
	if mp.printlock == 0 {
		unlock(&debuglock)
	}
}

	for _, c := range clipTests {
		dst := dst0.SubImage(c.dr).(*image.RGBA)
		src := src0.SubImage(c.sr).(*image.RGBA)
		r, sp, mp := c.r, c.sp, c.mp
		if c.nilMask {
			clip(dst, &r, src, &sp, nil, nil)
		} else {
			clip(dst, &r, src, &sp, mask0.SubImage(c.mr), &mp)
		}

		// Check that the actual results equal the expected results.
		if !c.r0.Eq(r) {

        Parameter mp = md.getParameters().get(0);

        assertEquals("finalName", mp.getName());
        assertEquals("jarName", mp.getAlias());
        assertEquals("java.lang.String", mp.getType());
        assertEquals("java.lang.String", mp.getImplementation());
        assertTrue(mp.isEditable());
        assertFalse(mp.isRequired());

	locked := gp.lockedm != 0
	if c.mp != nil || locked {
		if mp != c.mp || mp.lockedInt != c.lockedInt || mp.lockedExt != c.lockedExt {
			print("coro: got thread ", unsafe.Pointer(mp), ", want ", unsafe.Pointer(c.mp), "\n")
			print("coro: got lock internal ", mp.lockedInt, ", want ", c.lockedInt, "\n")
			print("coro: got lock external ", mp.lockedExt, ", want ", c.lockedExt, "\n")

}

func (ls LineString) Clone() LineString {
	ps := MultiPoint(ls)
	return LineString(ps.Clone())
}

type MultiPoint []Point

func (mp MultiPoint) Clone() MultiPoint {
	if mp == nil {
		return nil
	}

	points := make([]Point, len(mp))
	copy(points, mp)

	return MultiPoint(points)
}

func F1() {
	cases := []struct {
		threshold float64
		length    int
	}{
		{0.1, 1118},
		{0.5, 257},

			return -1
		}
	}
}

//go:nosplit
func semawakeup(mp *m) {
	atomic.Xadd(&mp.waitsemacount, 1)
	ret := thrwakeup(uintptr(unsafe.Pointer(&mp.waitsemacount)), 1)
	if ret != 0 && ret != _ESRCH {
		// semawakeup can be called on signal stack.
		systemstack(func() {
			print("thrwakeup addr=", &mp.waitsemacount, " sem=", mp.waitsemacount, " ret=", ret, "\n")
		})
	}
}

func osinit() {

//
//	func semacreate(mp *m)
//		Create a semaphore for mp, if it does not already have one.
//
//	func semasleep(ns int64) int32
//		If ns < 0, acquire m's semaphore and return 0.
//		If ns >= 0, try to acquire m's semaphore for at most ns nanoseconds.
//		Return 0 if the semaphore was acquired, -1 if interrupted or timed out.
//
//	func semawakeup(mp *m)
//		Wake up mp, which is or will soon be sleeping on its semaphore.

			t.Fatalf("expected 3 mounts, got %d", len(mounts))
		}
		mp := mountInfo{"/dev/0", "/path/to/0", "type0", []string{"flags"}, "0", "0"}
		if !mountPointsEqual(mounts[0], mp) {
			t.Errorf("got unexpected MountPoint[0]: %#v", mounts[0])
		}
		mp = mountInfo{"/dev/1", "/path/to/1", "type1", []string{"flags"}, "1", "1"}
		if !mountPointsEqual(mounts[1], mp) {
			t.Errorf("got unexpected mountInfo[1]: %#v", mounts[1])
		}

// a non-zero byte to w, WaitForSigusr1 returns immediately with -1, -1.
func WaitForSigusr1(r, w int32, ready func(mp *M)) (int64, int64) {
	lockOSThread()
	// Make sure we can receive SIGUSR1.
	unblocksig(_SIGUSR1)

	waitForSigusr1.rdpipe = r
	waitForSigusr1.wrpipe = w

	mp := getg().m
	testSigusr1 = waitForSigusr1Callback
	ready(mp)

	// Wait for the signal. We use a pipe rather than a note
	// because write is always async-signal-safe.

		id := scheduleTimeoutEvent(delay)
		mp := acquirem()
		notes[n] = gp
		notesWithTimeout[n] = noteWithTimeout{gp: gp, deadline: deadline}
		releasem(mp)

		gopark(nil, nil, waitReasonSleep, traceBlockSleep, 1)

		clearTimeoutEvent(id) // note might have woken early, clear timeout

		mp = acquirem()
		delete(notes, n)
		delete(notesWithTimeout, n)
		releasem(mp)

		return n.key == note_woken
	}