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Groups > comp.lang.c++ > #86603
| From | Juha Nieminen <nospam@thanks.invalid> |
|---|---|
| Newsgroups | comp.lang.c++ |
| Subject | Re: manual memory management, vs an automatic gc... |
| Date | 2022-09-26 08:29 +0000 |
| Organization | Aioe.org NNTP Server |
| Message-ID | <tgrnsa$bj0$1@gioia.aioe.org> (permalink) |
| References | <tgl32i$2l0h0$1@dont-email.me> |
Chris M. Thomasson <chris.m.thomasson.1@gmail.com> wrote: > I have conducted a lot of experiments in the past with garbage collected > languages, and have come to a conclusion. Manual memory management > techniques can be a good thing, even in a GC environment. Iirc, I wrote > about it here before, many years ago. > > Being able to create objects all over the place willy-nilly, and never > even have to think about destroying them... Is a "convenience" that a GC > can help one out with... I think that as data-oriented design (as opposed to object-oriented design) is gaining popularity, especially in certain fields of programming that require extreme efficiency (such as game engines), the need for automatic garbage collection is diminishing, at least in those fields. The problem with automatic GC is that it's mostly needed when you allocate dynamically individual objects (which is the case with most GC'd languages). However, using individually allocated objects is a performance killer. (In fact, using "objects" at all, ie. class instances, is a performance killer.) DOD doesn't require individually allocated objects, as everything is put into arrays. (And not as in arrays of objects. Arrays of individual values, which would normally be class member variables.) Since optimally all the dynamically allocated data is in arrays, and no "object" refers to any other "object", the need for automatic GC is significantly lessened. In contrast, low-level control of what the compiler produces is significantly more important.
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manual memory management, vs an automatic gc... "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2022-09-23 12:57 -0700
Re: manual memory management, vs an automatic gc... Juha Nieminen <nospam@thanks.invalid> - 2022-09-26 08:29 +0000
Re: manual memory management, vs an automatic gc... "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2022-09-26 17:09 -0700
Re: manual memory management, vs an automatic gc... Juha Nieminen <nospam@thanks.invalid> - 2022-09-27 06:45 +0000
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