Struct OpenedNode 

pub struct OpenedNode<N: FxNode + ?Sized>(pub Arc<N>);

Tuple Fields

0: Arc<N>

Implementations

impl OpenedNode<FxBlob>

pub fn create_child_vmo(&self) -> Result<Vmo, Status>

Creates a read-only child VMO for this blob backed by the pager. The blob cannot be purged until all child VMOs have been destroyed.

WARNING: We need to ensure the open count is non-zero before invoking this function, so it is only implemented for OpenedNode<FxBlob>. This prevents the blob from being purged before we get a chance to register it with the pager for zx::Signals::VMO_ZERO_CHILDREN.

impl<N: FxNode + ?Sized> OpenedNode<N>

pub fn new(node: Arc<N>) -> Self

pub fn downcast<T: FxNode>(self) -> Result<OpenedNode<T>, Self>

Downcasts to something that implements FxNode.

pub fn take(self) -> Arc<N>

Takes the wrapped node. The caller takes responsibility for dropping the open count.

pub fn is<T: 'static>(&self) -> bool

Returns true if this is an instance of T.

Trait Implementations

impl<N: FxNode + ?Sized> Deref for OpenedNode<N>

type Target = Arc<N>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<N: FxNode + ?Sized> Drop for OpenedNode<N>

fn drop(&mut self)

Executes the destructor for this type.