Q: What tools would you recommend to help track down problems with memory usage- either leaks or misuse of handles and pointers?

A: Some tools you may want to check out include:

Debugging Memory Manager, on the Tool Chest Developer CD in the path

All the tools found on the Tool Chest Developer CD in the path

There are also some third party tools. Although Apple does not officially recommend third-party products, you may want to investigate some of the following tools:

• QC by Onyx Technology. QC is a control panel/extension, claims the manufacturer, that "adds the ability to stress-test applications for runtime, memory related errors. QC can be used during development, during testing by in-house and beta testers, and after the product ships (although a little late if errors are detected) by end users to evaluate the stability of a software package. " See the web page at http://www.onyx-tech.com

• Memory Mine by Adianta. The Memory Mine(TM), says the manufacturer, is "a standalone tool for monitoring heaps and stress testing applications (Purge, Compact, and Zap, as well as on-the-fly Memory Allocation). Heap corruption is flagged when it happens; memory leaks can be seen as they occur."

• The Debugger by Jasik Designs. This powerful debugger has an arcane interface, but many features not found in other competing debuggers. See the web page at http://www.jasik.com

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