Processor, multiprocessor system, and method for causing memory managing apparatus to manage shared memory

Patent metadata

Field	Value
Publication number	US-9104636-B2
Application number	US-201113027482-A
Country	US
Kind code	B2
Filing date	Feb 15, 2011
Priority date	Oct 26, 2010
Publication date	Aug 11, 2015
Grant date	Aug 11, 2015

Abstract

A memory managing apparatus manages a memory shared by processors. The apparatus includes an allocator, an updater and a releaser. The allocator secures a memory area in the memory allocated to each processor based on a request of each processor and registers reference counters corresponding one-to-one to the processors. The updater adds 1 to a value of the reference counter corresponding to the processor managing the memory area when the memory area is allocated to each processor and subtracts 1 from the value of the reference counter corresponding to the processor managing the memory area when the memory area is released from the processor to which the memory area is allocated. The releaser releases the memory area from the processor to which the memory area is allocated when a sum of the values of the reference counters in the memory area updated by the updater is 0.

First claim

The invention claimed is:

1. A processor sharing a shared memory shared by a plurality of processors, the shared memory comprising an allocation memory block and a management memory block, the processor comprising:
an allocator configured to secure a memory area in the shared memory allocated to each of the processors based on a request of each of the processors, and register a plurality of reference counters corresponding one-to-one to the processors;
an updater configured to a…

Assignees

• Nonogaki Nobuhiro
• Toshiba Kk

Inventors

• Nonogaki Nobuhiro

Classifications

• G06F15/167 Primary

  Physics · mapped topic