Morphing memory pools

• US 20050172096A1
• Filed: 03/14/2003
• Published: 08/04/2005
• Est. Priority Date: 04/03/2002
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Van Doren, Egidius Gerardus Petrus, Van Heesch, Hendrikus Christianus Wilhelmus
• Application Number:
  US10/509,456
• Publication Number:
  US 20050172096A1
• Time in Patent Office: Days
• US Class Current: 711/170
• CPC Class Codes: G06F 12/023 Free address space management
• CPC Class Codes: G06F 2212/1044 Space efficiency improvement

Abstract

The invention relates to a method, the use of such a method and an integrated circuit for altering memory configurations in a physical memory. A memory configuration comprising memory pools of memory packets can be changed into a new memory configuration by detecting a released memory packet within a memory pool of said first memory configuration, assigning memory from said released memory packet to said second memory configuration, determining the size of said assigned free memory of said second memory configuration and allocating within said assigned free memory a required amount of memory for a memory packet of a pool of said second memory configuration in case that assigned free memory size satisfies that allocation request. By said transition a seamless mode change may be applied and memory packets released within a first mode may already be used by said second mode. Fragmentation may be avoided.

Claims

1. Method for altering memory configurations in a physical memory where a first memory configuration and at least a second memory configuration are defined by at least one memory pool comprising at least one memory packet, respectively, comprising the steps of:

a) detecting a released memory packet within a memory pool of said first memory configuration,

b) assigning memory from said released memory packet to said second memory configuration,

c) determining the size of said assigned free memory of said second memory configuration, and

d) allocating within said assigned free memory a required amount of memory for a memory packet of a pool of said second memory configuration in case said assigned free memory size satisfies said allocation request.

2. Method according to claim 1, characterized by repeating the steps a-d until all allocated memory packets of said first memory configuration are released and all memory packets of said second memory configuration are allocated.

3. Method according to claim 1, characterized by carrying out an alteration of said memory configurations according to steps a-d to a further memory configuration prior to the release of all memory packets of said previous memory configurations.

4. Method according to claim 1, characterized by assigning all free memory of said first memory configuration to at least said second memory configuration prior to step a.

5. Method according to claim 1, characterized by configuring said memory configurations by allocating a fixed memory location to said at least one memory pool, and assigning memory packets within each of said at least two memory pools.

6. Method according to claim 1, characterized by allocating equally sized memory packets within a memory pool.

7. Method according to claim 1, characterized by releasing memory packets of said first memory configuration within a finite time.

8. Method according to claim 1, characterized by determining said second configuration prior to step a.

9. Use of a method according to claim 1 in streaming systems, in particular in video- and audio-streaming systems, where a memory configuration is based on a defined streaming graph.

10. Integrated circuit, in particular a digital signal processor, a digital video processor, or a digital audio processor, providing a memory allocation method according to claim 1.