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Re: C++ FQA [message #12676 is a reply to message #12673]

Mon, 12 November 2007 23:22

cbpporter is currently offline

cbpporter
Messages: 1401
Registered: September 2007

Ultimate Contributor

Quote:

Sorry for being rude, but your understanding of actual GC (and especially conservative GC) is sort of lacking.

That could very well be the case, but I believe I have some if not enough teoretical and practical experience. What exactly did I say that was inaccurate? I was referring to generic garbage collection (no ref-counting though), but biased toward mark and sweep style algorithms, not exactly to D's implementation (about which I have only superficial knowledge). And what do you mean by conservative GC?

Quote:

I am no expect in GC and perhaps I am wrong about this, but IMO generational GC and moving GC are mutually exclusive.

Well a moving GC (which makes little sense without a compacting GC) moves memory chunks around when neaded and modifies pointers to point to the new locations. A generational GC simply optimizes the allocated objects list so that objects that were created recently are faster to deallocate than old objects (plainly put), because newly created objects have a larger change to get destroyed. So I don't see any reason for them to be mutually exclusive. I could be wrong though.

Quote:

And no, you cannot have destructors and GC working together.

Well you can. With a little extra care, you can have fully functional destructors (just be sure never to physically deallocate memory, just do cleanups). But with GC you rarelly need non-trivial destructors. And if the programing language has a "scope" clause like D, things get a lot simpler.

Quote:

I believe that with a couple of tricks, I am getting (with U++) more than I could get with GC - all resources are managed by program structure.

No arguing here. This is one of the main reasons I like U++. But I would say "almost all", because once in a while you do need to manually manage memory outside of program structure. But those cases are insignificant to overall code size and scope.

[Updated on: Mon, 12 November 2007 23:24]

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[Message index]

		C++ FQA By: unodgs on Tue, 06 November 2007 23:27
		Re: C++ FQA By: Mindtraveller on Wed, 07 November 2007 00:41
		Re: C++ FQA By: unodgs on Wed, 07 November 2007 10:40
		Re: C++ FQA By: cbpporter on Wed, 07 November 2007 11:33
		Re: C++ FQA By: unodgs on Wed, 07 November 2007 13:15
		Re: C++ FQA By: Mindtraveller on Wed, 07 November 2007 14:03
		Re: C++ FQA By: cbpporter on Wed, 07 November 2007 14:57
		Re: C++ FQA By: Mindtraveller on Wed, 07 November 2007 18:02
		Re: C++ FQA By: cbpporter on Wed, 07 November 2007 19:30
		Re: C++ FQA By: Mindtraveller on Thu, 08 November 2007 00:13
		Re: C++ FQA By: mirek on Thu, 08 November 2007 05:34
		Re: C++ FQA By: Zardos on Thu, 08 November 2007 13:33
		Re: C++ FQA By: mirek on Thu, 08 November 2007 19:25
		Re: C++ FQA By: mdelfede on Thu, 08 November 2007 23:39
		Re: C++ FQA By: mirek on Fri, 09 November 2007 08:51
		Re: C++ FQA By: mdelfede on Fri, 09 November 2007 13:41
		Re: C++ FQA By: mirek on Fri, 09 November 2007 14:48
		Re: C++ FQA By: mdelfede on Fri, 09 November 2007 15:52
		Re: C++ FQA By: waxblood on Fri, 09 November 2007 17:07
		Re: C++ FQA By: mdelfede on Fri, 09 November 2007 19:51
		Re: C++ FQA By: mirek on Sat, 10 November 2007 15:14
		Re: C++ FQA By: mdelfede on Sat, 10 November 2007 17:06
		Re: C++ FQA By: cbpporter on Sat, 10 November 2007 17:31
		Re: C++ FQA By: mirek on Sat, 10 November 2007 17:54
		Re: C++ FQA By: mdelfede on Sat, 10 November 2007 23:57
		Re: C++ FQA By: mirek on Sun, 11 November 2007 09:54
		Re: C++ FQA By: mdelfede on Sun, 11 November 2007 11:25
		Re: C++ FQA By: Zardos on Tue, 13 November 2007 01:56
		Re: C++ FQA By: mirek on Tue, 13 November 2007 09:25
		Re: C++ FQA By: cbpporter on Tue, 13 November 2007 10:14
		Re: C++ FQA By: mirek on Tue, 13 November 2007 10:52
		Re: C++ FQA By: mirek on Thu, 22 November 2007 05:43
		Re: C++ FQA By: mdelfede on Sun, 11 November 2007 11:36
		Re: C++ FQA By: Mindtraveller on Sun, 11 November 2007 18:22
		Re: C++ FQA By: mdelfede on Sun, 11 November 2007 18:52
		Re: C++ FQA By: Mindtraveller on Mon, 12 November 2007 00:58
		Re: C++ FQA By: mirek on Mon, 12 November 2007 09:46
		Re: C++ FQA By: mdelfede on Mon, 12 November 2007 10:19
		Re: C++ FQA By: cbpporter on Mon, 12 November 2007 10:28
		Re: C++ FQA By: mdelfede on Mon, 12 November 2007 11:43
		Re: C++ FQA By: Mindtraveller on Mon, 12 November 2007 15:54
		Re: C++ FQA By: mdelfede on Mon, 12 November 2007 16:47
		Re: C++ FQA By: cbpporter on Mon, 12 November 2007 16:51
		Re: C++ FQA By: mirek on Mon, 12 November 2007 20:15
		Re: C++ FQA By: mirek on Mon, 12 November 2007 20:21
		Re: C++ FQA By: cbpporter on Mon, 12 November 2007 21:39
		Re: C++ FQA By: mirek on Mon, 12 November 2007 22:43
		Re: C++ FQA By: cbpporter on Mon, 12 November 2007 23:22
		Re: C++ FQA By: mirek on Mon, 12 November 2007 23:34
		Re: C++ FQA By: mdelfede on Mon, 12 November 2007 23:33
		Re: C++ FQA By: exolon on Tue, 13 November 2007 17:30
		Re: C++ FQA By: mdelfede on Tue, 13 November 2007 18:24
		Re: C++ FQA By: exolon on Tue, 13 November 2007 18:58
		Re: C++ FQA By: Mindtraveller on Fri, 16 November 2007 00:43
		Re: C++ FQA By: mirek on Fri, 16 November 2007 11:59
		Re: C++ FQA By: waxblood on Fri, 16 November 2007 16:24
		Re: C++ FQA By: mdelfede on Fri, 16 November 2007 16:37
		Re: C++ FQA By: mirek on Sat, 17 November 2007 10:04
		Re: C++ FQA By: mirek on Sat, 10 November 2007 15:22
		Re: C++ FQA By: mdelfede on Sat, 10 November 2007 16:58
		Re: C++ FQA By: mirek on Thu, 08 November 2007 05:25
		Re: C++ FQA By: mirek on Wed, 07 November 2007 15:14
		Re: C++ FQA By: mdelfede on Wed, 07 November 2007 15:39
		Re: C++ FQA By: exolon on Mon, 12 November 2007 13:09
		Re: C++ FQA By: mr_ped on Wed, 07 November 2007 17:05
		Re: C++ FQA By: tvanriper on Fri, 09 November 2007 12:56
		Re: C++ FQA By: mr_ped on Sat, 10 November 2007 22:26
		Re: C++ FQA By: mirek on Sat, 10 November 2007 22:35
		Re: C++ FQA By: Mindtraveller on Tue, 13 November 2007 02:41
		Re: C++ FQA By: Mindtraveller on Thu, 27 December 2007 14:47

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