Module smithay::utils::signaling [−][src]
Expand description
A general purpose signaling mechanism
This mechanism allows inter-module communication, by letting your modules register callbacks to listen for events generated by other modules. This signaling mechanism is synchronous and non-thread safe. If you need asynchronous thread safe communication, instead consider relying on channels.
The whole mechanism is built on the Signaler type.
It serves both as a message sending facility and a way to register new callbacks
for these messages. It can be cloned and passed around between your modules with
Rc-like semantics.
When sending a new signal with Signaler::signal, the provided value E will
be made accessible as a reference &E to all registered callback.
Sending a signal or registering a new callback from within a callback is supported. These will however take effect after the current signal is completely delivered. Ordering of sent signals and callback registration is preserved.
Structs
A token associated with a callback registered to a Signaler
A signaler, main type for signaling
Traits
Trait representing the capability of an object to listen for some signals