GFileMeasureFlags
the I/O priority of the request
optional GCancellable. [allow-none]
a GFileMeasureProgressCallback. [allow-none]
user_data for progress_callback
a GAsyncReadyCallback to call when complete. [allow-none]
the data to pass to callback function
Recursively measures the disk usage of file. This is the asynchronous version of g_file_measure_disk_usage(). See there for more information. Since 2.38