Function CFFileDescriptorCreateRunLoopSource 

pub extern "C-unwind" fn CFFileDescriptorCreateRunLoopSource(
    allocator: Option<&CFAllocator>,
    f: Option<&CFFileDescriptor>,
    order: CFIndex,
) -> Option<CFRetained<CFRunLoopSource>>

👎Deprecated: renamed to CFFileDescriptor::new_run_loop_source

Available on crate features CFFileDescriptor and CFRunLoop only.