Function dart_sys::Dart_SetMessageNotifyCallback

pub unsafe extern "C" fn Dart_SetMessageNotifyCallback(
    message_notify_callback: Dart_MessageNotifyCallback
)

Allows embedders to provide an alternative wakeup mechanism for the delivery of inter-isolate messages. This setting only applies to the current isolate.

Most embedders will only call this function once, before isolate execution begins. If this function is called after isolate execution begins, the embedder is responsible for threading issues.