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CircMap

tor_proto::channel::circmap

Struct CircMap 

Source 
pub(super) struct CircMap {
    m: HashMap<CircId, CircEnt>,
    range: CircIdRange,
    open_count: usize,
}
Expand description

A map from circuit IDs to circuit entries. Each channel has one.

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§m: HashMap<CircId, CircEnt>

Map from circuit IDs to entries

§range: CircIdRange

Rule for allocating new circuit IDs.

§open_count: usize

Number of open or opening entry in this map.

Implementations§

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impl CircMap

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pub(super) fn new(idrange: CircIdRange) -> Self

Make a new empty CircMap

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pub(super) fn add_origin_ent<R: Rng>( &mut self, rng: &mut R, createdsink: Sender<CreateResponse>, sink: Sender<AnyChanMsg, MpscSpec>, padding_ctrl: PaddingController, ) -> Result<CircId>

Add a new set of elements (corresponding to a PendingClientTunnel) as an entry to this map.

On success return the allocated circuit ID.

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pub(super) fn add_relay_ent( &mut self, circ_id: CircId, circ: Arc<RelayCirc>, sink: Sender<AnyChanMsg, MpscSpec>, padding_ctrl: PaddingController, ) -> StdResult<(), DestroyReason>

Add a new set of elements (corresponding to a RelayCirc) as an entry to this map.

We use DestroyReason as the return type since we very likely want to destroy the circuit if this fails, and not return an error and destroy the entire channel.

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pub(super) fn get_mut(&mut self, id: CircId) -> Option<MutCircEnt<'_>>

Return the entry for id in this map, if any.

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pub(super) fn note_cell_flushed( &mut self, id: CircId, info: QueuedCellPaddingInfo, )

Inform the relevant circuit’s padding subsystem that a given cell has been flushed.

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pub(super) fn advance_from_opening( &mut self, id: CircId, ) -> Result<Sender<CreateResponse>>

See whether ‘id’ is an opening circuit. If so, mark it “open” and return a oneshot::Sender that is waiting for its create cell.

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pub(super) fn destroy_sent(&mut self, id: CircId, hs: HalfCirc)

Called when we have sent a DESTROY on a circuit. Configures a “HalfCirc” object to track how many cells we get on this circuit, and to prevent us from reusing it immediately.

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pub(super) fn remove(&mut self, id: CircId) -> Option<CircEnt>

Extract the value from this map with ‘id’ if any

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pub(super) fn open_ent_count(&self) -> usize

Return the total number of open and opening entries in the map

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