What is "tagged memory" and how does it help in reducing program size?
+1
A:
Not sure, but it is possible that you are referring to garbage collection, which is the process of automatically disposing of no longer used objects created when running a program.
"Tagged memory" can be a synonym for mark-and-sweep, which is the most basic way to implement garbage collection.
If this is all wrong, please edit your question to clarify.
unwind
2009-04-02 08:18:16
+1: Absolutely correct!
none
2009-05-20 19:36:45
A:
Here's a more technical description going into the implementation details as to how this is used for garbage collection. You may also want to check out the wikipedia article about Tagged Pointers.
none
2009-05-21 11:26:56
A:
The Windows DDK makes use of "pool tags" when allocating memory out of the kernel page pool. It costs 4 bytes of memory per allocation, but allows you to label (i.e. tag) portions of kernel memory which might help with debugging and detecting memory leaks.
BTW I don't see how anything called "tagged memory" could reduce program code size. It sounds like extra work, which translates to "more code" and "bigger program." Maybe it's meant to reduce the memory footprint somehow?
aib
2010-01-11 05:50:48