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Groups > comp.lang.forth > #17375
| From | anton@mips.complang.tuwien.ac.at (Anton Ertl) |
|---|---|
| Newsgroups | comp.lang.forth |
| Subject | Re: Windows8 |
| Date | 2012-11-19 14:25 +0000 |
| Organization | Institut fuer Computersprachen, Technische Universitaet Wien |
| Message-ID | <2012Nov19.152505@mips.complang.tuwien.ac.at> (permalink) |
| References | (1 earlier) <b32b1e7a-d63f-4e15-b462-498dda42ae37@googlegroups.com> <r6adneVRDaG_pTzNnZ2dnUVZ_s2dnZ2d@supernews.com> <k7vmsc$df3$1@speranza.aioe.org> <2012Nov14.180148@mips.complang.tuwien.ac.at> <k899a1$rb2$1@speranza.aioe.org> |
"Ed" <invalid@nospam.com> writes:
>Anton Ertl wrote:
>> Memory leaks are a problem in some long-runnung programs, but most
>> "ills" I experience are from other kinds of bugs. It's harder to FREE
>> all dead memory explicity than to eliminate all references to dead
>> memory, so memory leaks are more common with FREE than with GC.
>
>Are you saying there is an inherent flaw in FREE - or simply a failure
>on the part of programmers to FREE memory? i.e. is dead memory
>avoidable or inevitable?
In theory it's avoidable and memory leaks (as well as other
FREE-related bygs) are a failure on the part of the programmer.
However, FREE is an error-prone feature, so you might also say that
it's an inherent flaw in FREE.
There is also the problem of external fragmentation (unallocated
pieces of memory that are too small to be useful for allocation),
which is pretty inherent in FREE, but I think it's more a theoretical
than a practical problem. For some implementations of ALLOCATE/FREE
it may also be a practical problem, but that's not inherent in the
concept of ALLOCATE/FREE.
>If dynamic memory can only be relied upon to work when there is
>an abundance of memory, then it begs the question why use it.
Well, it depends on the application. In many cases I just allocate
(with ALLOCATE or ALLOT, whatever is convenient), and never free it.
For libraries where I don't know how it is used, I FREE ALLOCATEd
memory, so that the library is more generally useful. For some
applications, limiting oneself to using ALLOT is appropriate. Horses
for courses.
- anton
--
M. Anton Ertl http://www.complang.tuwien.ac.at/anton/home.html
comp.lang.forth FAQs: http://www.complang.tuwien.ac.at/forth/faq/toc.html
New standard: http://www.forth200x.org/forth200x.html
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Windows8 visualforth@rocketmail.com - 2012-11-02 08:41 -0700
Re: Windows8 Brad Eckert <hwfwguy@gmail.com> - 2012-11-02 11:12 -0700
Re: Windows8 visualforth@rocketmail.com - 2012-11-06 09:05 -0800
Re: Windows8 Jason Damisch <jasondamisch@yahoo.com> - 2012-11-12 07:10 -0800
Re: Windows8 stephenXXX@mpeforth.com (Stephen Pelc) - 2012-11-12 17:27 +0000
Re: Windows8 visualforth@rocketmail.com - 2012-11-21 17:48 -0800
Re: Windows8 visualforth@rocketmail.com - 2012-11-07 20:44 -0800
Re: Windows8 Jason Damisch <jasondamisch@yahoo.com> - 2012-11-12 07:15 -0800
Re: Windows8 Brad Eckert <hwfwguy@gmail.com> - 2012-11-12 07:59 -0800
Re: Windows8 "Elizabeth D. Rather" <erather@forth.com> - 2012-11-12 07:55 -1000
Re: Windows8 "Ed" <invalid@nospam.com> - 2012-11-14 20:04 +1100
Re: Windows8 anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-11-14 17:01 +0000
Re: Windows8 "Ed" <invalid@nospam.com> - 2012-11-18 11:14 +1100
Re: Windows8 anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-11-19 14:25 +0000
Re: Windows8 "Elizabeth D. Rather" <erather@forth.com> - 2012-11-19 08:09 -1000
Re: Windows8 anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-11-20 09:55 +0000
Re: Windows8 mhx@iae.nl (Marcel Hendrix) - 2012-11-25 10:56 +0200
Re: Windows8 Bernd Paysan <bernd.paysan@gmx.de> - 2012-11-25 16:46 +0100
Re: Windows8 Doug Hoffman <glidedog@gmail.com> - 2012-11-19 16:21 -0500
Re: Windows8 Paul Rubin <no.email@nospam.invalid> - 2012-11-19 13:46 -0800
Re: Windows8 Doug Hoffman <glidedog@gmail.com> - 2012-11-19 17:05 -0500
Re: Windows8 "Elizabeth D. Rather" <erather@forth.com> - 2012-11-19 12:14 -1000
Re: Windows8 Paul Rubin <no.email@nospam.invalid> - 2012-11-19 14:30 -0800
Re: Windows8 "Elizabeth D. Rather" <erather@forth.com> - 2012-11-19 12:53 -1000
Re: Windows8 Doug Hoffman <glidedog@gmail.com> - 2012-11-19 17:44 -0500
Re: Windows8 Paul Rubin <no.email@nospam.invalid> - 2012-11-19 14:52 -0800
GC (was Re: Windows8) Doug Hoffman <glidedog@gmail.com> - 2012-11-26 11:44 -0500
Re: GC Paul Rubin <no.email@nospam.invalid> - 2012-11-26 11:44 -0800
Re: GC Doug Hoffman <glidedog@gmail.com> - 2012-11-28 06:35 -0500
Re: GC Paul Rubin <no.email@nospam.invalid> - 2012-11-29 11:58 -0800
Re: GC albert@spenarnc.xs4all.nl (Albert van der Horst) - 2012-11-30 01:46 +0000
Re: GC Paul Rubin <no.email@nospam.invalid> - 2012-11-29 21:14 -0800
Re: Windows8 Paul Rubin <no.email@nospam.invalid> - 2012-11-19 14:42 -0800
Re: Windows8 Doug Hoffman <glidedog@gmail.com> - 2012-11-19 17:56 -0500
Re: Windows8 Paul Rubin <no.email@nospam.invalid> - 2012-11-19 15:14 -0800
Re: Windows8 Doug Hoffman <glidedog@gmail.com> - 2012-11-19 18:45 -0500
Re: Windows8 "Elizabeth D. Rather" <erather@forth.com> - 2012-11-19 14:18 -1000
Re: Windows8 Paul Rubin <no.email@nospam.invalid> - 2012-11-19 16:18 -0800
Re: Windows8 Doug Hoffman <glidedog@gmail.com> - 2012-11-19 19:01 -0500
Re: Windows8 "Elizabeth D. Rather" <erather@forth.com> - 2012-11-19 12:58 -1000
Re: Windows8 Bernd Paysan <bernd.paysan@gmx.de> - 2012-11-20 02:23 +0100
Re: Windows8 anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-11-20 10:48 +0000
Re: Windows8 Alex McDonald <blog@rivadpm.com> - 2012-11-20 07:56 -0800
Re: Windows8 anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-11-21 15:03 +0000
Re: Windows8 Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-11-23 05:58 -0800
Re: Windows8 Mark Wills <forthfreak@gmail.com> - 2012-11-20 02:13 -0800
Re: Windows8 Paul Rubin <no.email@nospam.invalid> - 2012-11-20 08:57 -0800
Re: Windows8 "David N. Williams" <williams@umich.edu> - 2012-11-20 16:56 -0500
Re: Windows8 mhx@iae.nl (Marcel Hendrix) - 2012-11-25 11:20 +0200
Re: Windows8 rickman <gnuarm@gmail.com> - 2012-11-14 16:36 -0500
Re: Windows8 "Elizabeth D. Rather" <erather@forth.com> - 2012-11-14 12:12 -1000
Re: Windows8 rickman <gnuarm@gmail.com> - 2012-11-14 17:46 -0500
Re: Windows8 "Elizabeth D. Rather" <erather@forth.com> - 2012-11-14 13:12 -1000
Re: Windows8 Paul Rubin <no.email@nospam.invalid> - 2012-11-14 18:12 -0800
Re: Windows8 rickman <gnuarm@gmail.com> - 2012-11-15 13:55 -0500
Re: Windows8 RR <freedomspyder@gmail.com> - 2012-11-15 16:03 -0800
Re: Windows8 rickman <gnuarm@gmail.com> - 2012-11-15 21:54 -0500
Re: Windows8 RR <freedomspyder@gmail.com> - 2012-11-15 19:26 -0800
Re: Windows8 Paul Rubin <no.email@nospam.invalid> - 2012-11-15 19:27 -0800
Re: Windows8 Bernd Paysan <bernd.paysan@gmx.de> - 2012-11-16 17:45 +0100
Re: Windows8 Paul Rubin <no.email@nospam.invalid> - 2012-11-16 09:10 -0800
Re: Windows8 Bernd Paysan <bernd.paysan@gmx.de> - 2012-11-16 22:34 +0100
Re: Windows8 Andy Valencia <vandys@vsta.org> - 2012-11-16 18:06 +0000
Re: Windows8 Paul Rubin <no.email@nospam.invalid> - 2012-11-16 11:09 -0800
Re: Windows8 Spam@ControlQ.com - 2012-11-16 15:18 -0500
Re: Windows8 visualforth@rocketmail.com - 2012-11-15 00:19 -0800
Re: Windows8 "Elizabeth D. Rather" <erather@forth.com> - 2012-11-14 22:55 -1000
Re: Windows8 albert@spenarnc.xs4all.nl (Albert van der Horst) - 2012-11-15 12:20 +0000
Re: Windows8 visualforth@rocketmail.com - 2012-11-15 08:32 -0800
Re: Windows8 kenney@cix.compulink.co.uk - 2012-11-16 04:51 -0600
Re: Windows8 stephenXXX@mpeforth.com (Stephen Pelc) - 2012-11-16 13:46 +0000
Re: Windows8 visualforth@rocketmail.com - 2012-11-16 08:12 -0800
Re: Windows8 the_gavino_himself <visphatesjava@gmail.com> - 2012-11-29 00:16 -0800
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