Function AUGraphIsRunning 

pub unsafe extern "C-unwind" fn AUGraphIsRunning(
    in_graph: AUGraph,
    out_is_running: NonNull<u8>,
) -> i32

👎Deprecated: AUGraph is deprecated in favor of AVAudioEngine

Available on crate feature AUGraph only.

Is the graph running (has it been started)

Safety

• in_graph must be a valid pointer.
• out_is_running must be a valid pointer.