Reads an unsigned 64-bit/8-byte value from @stream.
In order to get the correct byte order for this read operation,
see g_data_input_stream_get_byte_order().
If @cancellable is not %NULL, then the operation can be cancelled by
triggering the cancellable object from another thread. If the operation
was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
Reads an unsigned 64-bit/8-byte value from @stream.
In order to get the correct byte order for this read operation, see g_data_input_stream_get_byte_order().
If @cancellable is not %NULL, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.