Struct devices::virtio::media::ArcedMemoryMapper

struct ArcedMemoryMapper(Arc<Mutex<Box<dyn SharedMemoryMapper>>>);

A SharedMemoryMapper behind an Arc, allowing it to be shared.

This is required by the fact that devices can be activated several times, but the mapper is only provided once. This might be a defect of the VirtioDevice interface.

Tuple Fields

0: Arc<Mutex<Box<dyn SharedMemoryMapper>>>

Trait Implementations

impl Clone for ArcedMemoryMapper

fn clone(&self) -> ArcedMemoryMapper

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl From<Box<dyn SharedMemoryMapper>> for ArcedMemoryMapper

fn from(mapper: Box<dyn SharedMemoryMapper>) -> Self

Converts to this type from the input type.

impl SharedMemoryMapper for ArcedMemoryMapper

fn add_mapping( &mut self, source: VmMemorySource, offset: u64, prot: Protection, cache: MemCacheType ) -> Result<()>

Maps the given |source| into the shared memory region at |offset|.

fn remove_mapping(&mut self, offset: u64) -> Result<()>

Removes the mapping beginning at |offset|.

fn as_raw_descriptor(&self) -> Option<RawDescriptor>