Re: GC "survey"
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- Subject: Re: GC "survey"
- From: Edgar Toernig <froese@...>
- Date: 2002年8月24日 02:12:02 +0200
Eric Ries wrote:
>
> I would think that doing reference counting to catch the easy cases would
> solve most of the problem. It?s not like ref counting ever gives you any
> false positives (objects that should not be collected).
Why do you think that ref-counting is faster than a GC? Most of the time
it's slower. It takes more memory. You still need a GC. And the run-time
behaviour is also hard to predict. I see no benefit...
> If you used ref
> counting to amortize the cost of freeing the simple garbage, the additional
> overhead of mark-and-sweep would only be high in cases where you have lots
> of circular data structures. Anyone in that category?
It happens more often than one may think. I.e. every "back/parent-pointer"
creates a loop...
Ciao, ET.