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Re: robustness vs. conservative GC
- To: Tom Lord <lord at regexps dot com>
- Subject: Re: robustness vs. conservative GC
- From: Jeff Sturm <jsturm at one-point dot com>
- Date: Fri, 10 Aug 2001 17:33:15 -0400 (EDT)
- cc: gcc at gcc dot gnu dot org
On Fri, 10 Aug 2001, Tom Lord wrote:
> Supposing you do have exact type information for the stack, how can GC
> be certain a stack slot is initialized?
>
> If the information you have doesn't tell you that, then it isn't
> exact.
Fair enough. But now instead of one stack frame description per function,
you may need several. And observe correct sequential ordering on a
multiprocessor.
I'm still finding it hard to imagine how that can be done for reasonable
cost.
Jeff