pub fn enter_plugin<P>(plugin: &PluginCell<P>) -> PluginGuard<'_, P>Expand description
Take ownership of the plugin for the current callback. Never blocks:
the audio thread owns the plugin while active, the host thread while
inactive, and the host contract keeps the two from overlapping, so
there is nothing to wait on. The returned guard’s &mut is exclusive
by that contract; the Acquire inside observes the previous owner’s
writes.