Memory control apparatus, method and program

A memory control apparatus for controlling a power supply for refreshing amemory, in which a storage region is divided into a plurality of unit regions, on a unit region-by-unit region basis, the apparatus comprising:

• a memory information storing section for storing memory information in which a logical address for indicating a data storage location to an application is associated with a physical address indicating an actual data storage location in the memory with respect to each data stored in the memory,
• a data moving section for moving data storage locations of all data stored in at least one unit region of the memory to another unit region in which data is stored and changing details of the memory information with respect to physical addresses of moved data and a correspondence between the physical addresses and logical addresses;
• and
• a memory control section for specifying, based on the memory information, the unit region in which data is stored as a refresh region for refreshing and the unit region in which no data is stored as a non-refresh region which is prevented from being refreshed.

A memory control method for controlling a power supply for refreshing a memory, in which a storage region is divided into a plurality of unit regions, on a unit region-by-unit region basis, the method comprising the steps of:

• receiving an allocate request for allocating a memory region for storing data in the memory from an application and determining whether or not the data requires refreshing based on the allocate request;
• allocating a memory region within a first unit region to data having been determined to require refreshing and a memory region within a second unit region which is different from the first unit region to data having been determined to require no refreshing;
• and
• specifying the first unit region as a refresh region for refreshing and specifying the second unit region as a non-refresh region which is prevented from being refreshed.

A memory control method for controlling a power supply for refreshing a memory, in which a storage region is divided into a plurality of unit regions, on a unit region-by-unit region basis, the method comprising the steps of:

• prestoring memory information in which a logical address for indicating a data storage location to an application is associated with a physical address indicating an actual data storage location in the memory with respect to each data stored in the memory;
• moving all data stored in at least one unit region of the memory to another unit region in which data is stored and changing details of the memory information with respect to physical addresses of moved data and a correspondence between the physical addresses and logical addresses;
• and
• specifying, based on the memory information, the unit region in which data is stored as a refresh region for refreshing and the unit region in which no data is stored as a non-refresh region which is prevented from being refreshed.