Memory management system, computer program thereof and memory management method

• US 20020059507A1
• Filed: 11/08/2001
• Published: 05/16/2002
• Est. Priority Date: 11/15/2000
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Hironaka, Yasufumi
• Granted Patent: US 6,718,450 B2
• Time in Patent Office: Days
• US Class Current: 711/170
• CPC Class Codes: G06F 12/0223 User address space allocation, e.g. contiguous or non contiguous base addressing
• CPC Class Codes: G06F 9/5016 the resource being the memory

Abstract

In the memory management system for managing a memory and for causing an application to execute using the memory, the memory management system comprising: a first means for registering an allocatable memory region for causing the application to execute on a memory management table provided for memory management; a second means for receiving an allocation request, in a case in which the application issues the allocation request for requesting to allocate a necessary memory size to the application, to the memory management system; a third means for determining whether or not the memory size requested by the allocation request is allocatable to the application; and a fourth means for registering the memory size and a region allocated for the memory size on the memory management table and notifying the application that the requested memory size has been allocated, if the memory size is allocatable based on determination of the third means, and for notifying the application that the requested memory size is non-allocatable, if the requested memory size is non-allocatable.

Claims

1. A memory management system for managing a memory and for causing an application to execute using said memory, said memory management system comprising:

a first means for registering an allocatable memory region for causing said application to execute on a memory management table provided for memory management;

a second means for receiving an allocation request, in a case in which said application issues said allocation request for requesting to allocate a necessary memory size to said application, to said memory management system;

a third means for determining whether or not said memory size requested by said allocation request is allocatable to said application; and

a fourth means for registering said memory size and a region allocated for said memory size on said memory management table and notifying said application that said requested memory size has been allocated, if said memory size is allocatable based on determination of said third means, and for notifying said application that said requested memory size is non-allocatable, if said requested memory size is non-allocatable.

2. The memory management system according to claim 1, wherein said memory management system further comprising:

a fifth means for receiving a second allocation request, in a case in which a second application that is different from said application issues said second allocation request for requesting to allocate a necessary memory size to said second application, to said memory management system;

a sixth means for determining whether or not said memory size requested by said second allocation request is allocatable to said second application; and

a seventh means for registering said memory size and a region allocated for said memory size on said memory management table and notifying said second application that said requested memory size has been allocated, if said memory size is allocatable based on determination of said sixth means, and for notifying said second application that said requested memory size is non-allocatable, if said requested memory size is non-allocatable.

3. A memory management method for managing a memory and for causing an application to execute using said memory, said method comprising the steps of:

registering an allocatable memory region for causing said application to execute on a memory management table provided for memory management;

receiving an allocation request, in a case in which said application issues said allocation request for requesting to allocate a necessary memory size to said application, to said memory management system;

determining whether or not said memory size requested by said allocation request is allocatable to said application; and

registering said memory size and a region allocated for said memory size on said memory management table and notifying said application that said requested memory size has been allocated, if said memory size is allocatable based on determination of said third means, and for notifying said application that said requested memory size is non-allocatable, if said requested memory size is non-allocatable.

4. The memory management method according to claim 3, wherein said method further comprising the steps of:

receiving a second allocation request, in a case in which a second application that is different from said application issues said second allocation request for requesting to allocate a necessary memory size to said second application, to said memory management system;

determining whether or not said memory size requested by said second allocation request is allocatable to said second application; and

registering said memory size and a region allocated for said memory size on said memory management table and notifying said second application that said requested memory size has been allocated, if said memory size is allocatable based on determination of said sixth means, and for notifying said second application that said requested memory size is non-allocatable, if said requested memory size is non-allocatable.

5. A computer program for a memory management system for managing a memory and for causing an application to execute using said memory, said computer program comprising the steps of:

registering an allocatable memory region for causing said application to execute on a memory management table provided for memory management;

receiving an allocation request, in a case in which said application issues said allocation request for requesting to allocate a necessary memory size to said application, to said memory management system;

determining whether or not said memory size requested by said allocation request is allocatable to said application; and

registering said memory size and a region allocated for said memory size on said memory management table and notifying said application that said requested memory size has been allocated, if said memory size is allocatable based on determination of said third means, and for notifying said application that said requested memory size is non-allocatable, if said requested memory size is non-allocatable.

6. The computer program according to claim 5, wherein said computer program further comprising the steps of:

receiving a second allocation request, in a case in which a second application that is different from said application issues said second allocation request for requesting to allocate a necessary memory size to said second application, to said memory management system;

determining whether or not said memory size requested by said second allocation request is allocatable to said second application; and

registering said memory size and a region allocated for said memory size on said memory management table and notifying said second application that said requested memory size has been allocated, if said memory size is allocatable based on determination of said sixth means, and for notifying said second application that said requested memory size is non-allocatable, if said requested memory size is non-allocatable.