Function gio_sys::g_file_measure_disk_usage

pub unsafe extern "C" fn g_file_measure_disk_usage(
    file: *mut GFile, 
    flags: GFileMeasureFlags, 
    cancellable: *mut GCancellable, 
    progress_callback: GFileMeasureProgressCallback, 
    progress_data: gpointer, 
    disk_usage: *mut u64, 
    num_dirs: *mut u64, 
    num_files: *mut u64, 
    error: *mut *mut GError
) -> gboolean