//
//go:nowritebarrier
func markrootSpans(gcw *gcWork, shard int) {
	// Objects with finalizers have two GC-related invariants:
	//
	// 1) Everything reachable from the object must be marked.
	// This ensures that when we pass the object to its finalizer,
	// everything the finalizer can reach will be retained.
	//
	// 2) Finalizer specials (which are not in the garbage
	// collected heap) are roots. In practice, this means the fn

significant risk of stuck finalizers. finalizers is a shared field, any actor with permission can reorder it. If the finalizer list is processed in order, then this can lead to a situation in which the component responsible for the first finalizer in the list is waiting for a signal (field value, external system, or other) produced by a component responsible for a finalizer later in the list, resulting in a deadlock. Without enforced ordering finalizers are free to order amongst themselves and are not...

			// so it's retained for the finalizer.
			if !span.spanclass.noscan() {
				scanobject(base, gcw)
			}
			// Mark the finalizer itself, since the
			// special isn't part of the GC'd heap.
			scanblock(uintptr(unsafe.Pointer(&s.fn)), goarch.PtrSize, &oneptrmask[0], gcw, nil)
			releasem(mp)
		}
		return true
	}

	// There was an old finalizer
	lock(&mheap_.speciallock)

significant risk of stuck finalizers. finalizers is a shared field, any actor with permission can reorder it. If the finalizer list is processed in order, then this can lead to a situation in which the component responsible for the first finalizer in the list is waiting for a signal (field value, external system, or other) produced by a component responsible for a finalizer later in the list, resulting in a deadlock. Without enforced ordering finalizers are free to order amongst themselves and are not...

// goroutineProfileState will be "InProgress" and it will not be able to run
// until the capture completes and the state moves to "Satisfied".
//
// Some goroutines (the finalizer goroutine, which at various times can be
// either a "system" or a "user" goroutine, and the goroutine that is
// coordinating the profile, any goroutines created during the profile) move
// directly to the "Satisfied" state.

		if err != nil {
			return fmt.Errorf("persistent volume controller can't update finalizer: %v", err)
		}
		_, err = ctrl.storeVolumeUpdate(logger, volumeClone)
		if err != nil {
			return fmt.Errorf("persistent Volume Controller can't anneal migration finalizer: %v", err)
		}
		logger.V(2).Info("PV in-tree protection finalizer removed from volume", "volumeName", volume.Name)
	}
	return nil
}

// so they are empty. When a goroutine grabs a new span into mcache, it sweeps it.
// When a goroutine explicitly frees an object or sets a finalizer, it ensures that
// the span is swept (either by sweeping it, or by waiting for the concurrent sweep to finish).
// The finalizer goroutine is kicked off only when all spans are swept.
// When the next GC starts, it sweeps all not-yet-swept spans (if any).

// GC rate.

	listers "k8s.io/apiextensions-apiserver/pkg/client/listers/apiextensions/v1"
	"k8s.io/apiextensions-apiserver/pkg/controller/establish"
	"k8s.io/apiextensions-apiserver/pkg/controller/finalizer"
	"k8s.io/apiextensions-apiserver/pkg/controller/openapi/builder"
	"k8s.io/apiextensions-apiserver/pkg/crdserverscheme"
	"k8s.io/apiextensions-apiserver/pkg/registry/customresource"

			expectedErr: true,
		},
		"skip-adding-finalizer": {
			pod:    podWithClaimName,
			claims: []*resourcev1alpha2.ResourceClaim{pendingImmediateClaim},
			oldObj: pendingImmediateClaim,
			newObj: func() *resourcev1alpha2.ResourceClaim {
				claim := pendingImmediateClaim.DeepCopy()
				claim.Finalizers = append(claim.Finalizers, "foo")
				return claim
			}(),

// runtime.handleAsyncEvent (wasm only) and sometimes runtime.runfinq.
//
// If fixed is true, any goroutine that can vary between user and
// system (that is, the finalizer goroutine) is considered a user
// goroutine.
func isSystemGoroutine(gp *g, fixed bool) bool {
	// Keep this in sync with internal/trace.IsSystemGoroutine.
	f := findfunc(gp.startpc)
	if !f.valid() {