1. A file management device comprising: a management unit that manages data stored as a file in a storage device, the management unit associating a file name of the data and an address of the data in a storage region of the storage device and storing the associated data, and when a processing unit that processes data processes data stored as a file, assigning an address in which a processing region used by the processing unit during the processing within the storage region is associated with the file name of the data as an address and stored.