US 8,429,354 B2Granted

Fixed length memory block management apparatus and method for enhancing memory usability and processing efficiency

AssigneeKabushiki Kaisha Toshiba

InventorTakeshi Kodaka

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Abstract

A fixed length memory block management apparatus has a plurality of processors which execute applications, a memory which is shared by the plurality of processors, an application program, an initialization program, and an access right allocation program being stored in the memory. The apparatus has an application execution unit which starts up the application program to execute the application, an initialization unit which starts up the initialization program to set a memory block management area including a plurality of sub-blocks at the memory, and an access right allocation unit which starts up the access right allocation program to allocate an access right of a memory block of the sub-block set by the initialization unit to the application execution unit.

Claims12

Dependent claims

A fixed length memory block management apparatus comprising:

a plurality of processors configured to execute an application and share a memory,
wherein each processor comprises:
an application execution unit configured to execute the application;
an initialization unit configured to set a memory block management area comprising a plurality of sub-blocks in the memory;
and
an access right allocation unit configured to allocate an access right of a memory block of the sub-blocks in the memory block management area to the application execution unit, wherein
in each sub-block, the initialization unit sets an exclusive access control right memory block in which the exclusive access control right is set, a first offset memory block in which a first offset to a starting address of a next sub-block to be accessed is stored, a second offset memory block in which a second offset to a starting address of a memory block which is not allocated to the application execution unit is stored, and an allocation memory block which is allocated to the application execution unit.

4 more elements

A method for enhancing memory usability and processing efficiency in a multiprocessor system comprising a plurality of processors configured to execute an application and share a memory, the method comprising:

setting a memory block management area comprising a plurality of sub-blocks at the memory;
acquiring an exclusive access control right of a predetermined sub-block in the sub-blocks;
and
allocating an access right of a memory block of the sub-block to the application, wherein
in each sub-block, an exclusive access control right memory block at which the exclusive access control right is set, a first offset memory block in which a first offset to a starting address of a next sub-block to be accessed is stored, a second offset memory block in which a second offset to a starting address of a memory block which is not allocated to the application execution unit is stored, and an allocation memory block which is allocated to the application execution unit is set.

2 more elements

Dependencies are inferred from the claim text.