observer

Publish/Subscribe Event Pattern

Functions

Function	Description
`obs_new`	Create an event bus.
`obs_find_topic`	Internal: find or create slot for topic.
`obs_subscribe`	Subscribe a handler function pointer to a topic. Handler signature: fn(data: …
`obs_emit_i`	Emit an event to all subscribers of a topic. Calls each handler with the data…
`obs_unsubscribe_all`	Remove all handlers for a topic.
`obs_subscriber_count`	Number of subscribers for a topic.

fn obs_new(max_topics: i64) -> &i64

Create an event bus.

fn obs_find_topic(bus: &i64, topic: i64) -> i64

Internal: find or create slot for topic.

fn obs_subscribe(bus: &i64, topic: i64, fn_ptr: i64)

Subscribe a handler function pointer to a topic. Handler signature: fn(data: i64) or fn(data: &i64)

fn obs_emit_i(bus: &i64, topic: i64, val: i64)

Emit an event to all subscribers of a topic. Calls each handler with the data argument.

fn obs_unsubscribe_all(bus: &i64, topic: i64)

Remove all handlers for a topic.

fn obs_subscriber_count(bus: &i64, topic: i64) -> i64

Number of subscribers for a topic.