Struct PvManager 

pub struct PvManager { /* private fields */ }

Creates and shares PV subscriptions.

Implementations

impl PvManager

pub fn new() -> Self

pub fn set_notifier(&self, notifier: Notifier)

Register a callback run after every PV change.

pub fn tagged(&self, notifier: Notifier) -> Self

A handle to the same PVs that tags each PV subscribed through it with notifier, called after each change of those PVs (and each new notice) for as long as this handle or a clone of it is held. A UI window gives its display one, to repaint only the windows showing a PV that changed.

pub fn retagged(&self) -> Self

A handle with this one’s notifier under a new tag: PVs subscribed through it are tagged afresh, and those subscribed only through this one stop calling the notifier once it and its clones are dropped (a window showing another display).

pub fn set_read_only(&self, read_only: bool)

Refuse (or allow again) writes to every PV but loc:// ones; PVs then report themselves not writable, so controls are disabled.

pub fn read_only(&self) -> bool

pub fn notice(&self) -> (u64, String)

The latest message for the user about a refused or failed write, and a number that changes with each new one (starting at 0 for none).

pub fn runtime(&self) -> &Runtime

The tokio runtime the PV tasks run on.

pub fn subscribe(&self, name: &str) -> Pv

Get (or start) a subscription for name, e.g. ca://X, sim://sine or plain X.

Trait Implementations

impl Clone for PvManager

fn clone(&self) -> PvManager

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for PvManager

fn default() -> Self

Returns the “default value” for a type.