Struct HandleMgr

pub struct HandleMgr<ServerData> { /* private fields */ }

A manager for open handles, per compartment.

Implementations

impl<ServerData> HandleMgr<ServerData>

pub const fn new(max: Option<usize>) -> Self

Construct a new HandleMgr.

pub fn max(&self) -> Option<usize>

Get the maximum number of open handles.

pub fn total_count(&self) -> usize

Get the total number of open handles across all compartments.

pub fn open_count(&self, comp: ObjID) -> usize

Get the number of currently open handles for a given compartment.

pub fn lookup(&self, comp: ObjID, ds: Descriptor) -> Option<&ServerData>

Lookup the server data associated with a descriptor.

pub fn lookup_mut( &mut self, comp: ObjID, ds: Descriptor, ) -> Option<&mut ServerData>

Lookup the server data associated with a descriptor.

pub fn insert(&mut self, comp: ObjID, sd: ServerData) -> Option<Descriptor>

Insert new server data, and return a descriptor for it.

pub fn remove(&mut self, comp: ObjID, ds: Descriptor) -> Option<ServerData>

Remove a descriptor, returning the server data if present.

Trait Implementations

impl<ServerData: Clone> Clone for HandleMgr<ServerData>

fn clone(&self) -> HandleMgr<ServerData>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<ServerData: Default> Default for HandleMgr<ServerData>

fn default() -> HandleMgr<ServerData>

Returns the “default value” for a type.