Virtual Memory: 3 Using Virtual Memory

GEOS SDK TechDocs

2 VM Structure

4 VM Chains

The most common way applications will use Virtual Memory is for their data files. However, there are other uses; for example, VM provides a convenient way to maintain working memory. Some data structures (such as Huge Arrays) can only exist in VM files; an application may create a temporary VM file just for these structures.

How to Use VM

Opening or Creating a VM File

Changing VM File Attributes

Creating and Freeing Blocks

Attaching Memory Blocks

Accessing and Altering VM Blocks

VM Block Information

Updating and Saving Files

Closing Files

The VM File's Map Block

File-Access Synchronization

Other VM Utilities

GEOS SDK TechDocs

2 VM Structure

4 VM Chains