Function core_foundation_sys::runloop::CFRunLoopObserverCreate

pub unsafe extern "C" fn CFRunLoopObserverCreate(
    allocator: CFAllocatorRef,
    activities: CFOptionFlags,
    repeats: Boolean,
    order: CFIndex,
    callout: CFRunLoopObserverCallBack,
    context: *mut CFRunLoopObserverContext
) -> CFRunLoopObserverRef