Trait LayerObject 

pub trait LayerObject: ReadObjectHandle {
    // Provided methods
    fn as_slice(&self) -> Option<&[u8]> { ... }
    fn has_io_error(&self) -> bool { ... }
    fn purge_cached_data(&self) { ... }
    fn close<'life0, 'async_trait>(
        &'life0 self,
    ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>
       where Self: Sync + 'async_trait,
             'life0: 'async_trait { ... }
}

A handle for reading layer objects.

Provided Methods

fn as_slice(&self) -> Option<&[u8]>

Returns a memory-mapped slice of the entire layer file if supported (e.g. when backed by a pager-managed VMO).

fn has_io_error(&self) -> bool

Returns true if an underlying I/O error occurred while paging in data for this object.

fn purge_cached_data(&self)

Requests that cached data (such as paged-in pages) for this object be purged.

fn close<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

where Self: Sync + 'async_trait, 'life0: 'async_trait,

Called when the layer is closed to release any external resources (such as pager registrations).

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<T: LayerObject + ?Sized> LayerObject for Arc<T>

fn as_slice(&self) -> Option<&[u8]>

fn has_io_error(&self) -> bool

fn purge_cached_data(&self)

fn close<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

impl<T: LayerObject + ?Sized> LayerObject for Box<T>

fn as_slice(&self) -> Option<&[u8]>

fn has_io_error(&self) -> bool

fn purge_cached_data(&self)

fn close<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Implementors

impl LayerObject for dyn ReadObjectHandle + '_

impl<S: HandleOwner> LayerObject for DataObjectHandle<S>