Framework:System

The ACIS System represents the core functionality upon which the modeling system is based. Essentially, the core functionality manages models such as creating, copying, deleting, as well as saving and restoring models to disk. This framework also discusses ACIS' history mechanism for implementing undo/redo for your models, and best practices for optimizing your applications that use ACIS.

Topic	Description
Initialization and Termination	Recommendations for when and how to initialize/terminate ACIS.
Error Handling	How to extract error codes/messages from failed APIs. How to best use ACIS EXCEPTION blocks.
Copying Models	Copy all or a portion of a model.
Deleting Models	Delete all or a portion of a model from memory.
Saving and Restoring Models	Save/restore ACIS models to disk. SAT versus SAB file formats. Recommendations for applications embedding ACIS model data into their proprietary file formats.
History and Roll	Use our history mechanism to undo a modeling operation - or redo it.
Attributes	Use attributes to attach application data to the model.
Versioning	Used to specify that an ACIS API behave according to a particular version of ACIS. (Used primarily by feature-tree based applications.)
Journaling	Take a snapshot of an API's inputs for use in Scheme (a test application we provide as part of our packaging). Useful for submitting questions/issues regarding the behavior of a particular API.
Annotations	Use annotations to understand what happened to a model during a modeling operation.
Memory Management	Use ACIS memory management functionality to allocate and de-allocate memory, collect statistics about memory usage, and more.
Model Management	Overview of functionality for managing ACIS models.
Minimizing Memory	Techniques reducing ACIS' memory usage (sometimes at the cost of performance).
Optimizing Performance	Techniques for streamlining ACIS' performance (sometimes at the cost of consuming more memory).
Thread-Safe ACIS	Thread-Safe ACIS supports multi-threading with thread management, thread-local storage, and mutual exclusion functionality.