Re: Olympic Spririt for Forth

From	Bernd Paysan <bernd.paysan@gmx.de>
Newsgroups	comp.lang.forth
Subject	Re: Olympic Spririt for Forth
Date	2012-10-09 22:47 +0200
Organization	1&1 Internet AG
Message-ID	<1671428.16UQojdk74@sunwukong.fritz.box> (permalink)
References	(16 earlier) <1755828.uKo66frh80@sunwukong.fritz.box> <7xa9vw9r99.fsf@ruckus.brouhaha.com> <07a5baa4-815e-44fa-ad6d-e598f0a2f38b@y6g2000vbb.googlegroups.com> <7x1uh7k5a0.fsf@ruckus.brouhaha.com> <etydnYn8ffDy0OnNnZ2dnUVZ8j-dnZ2d@supernews.com>

Show all headers | View raw

Andrew Haley wrote:
> And neither, I have to point out, does it happen with a language that
> doesn't use dynamic memory allocation.  Besides, the analogy in a GC'd
> langauge is a memory leak: these are very hard to avoid and happen all
> the time.

A lot of people seem to assume that a GC'd language means you don't have 
memory leaks, the GC will find and collect all garbage.  Though, in 
reality, this isn't true.  A GC can throw away things that aren't 
pointed to by any of the root pointers.  However, you can easily have a 
situation where you store things in a structure pointed by a root that 
you don't actually need anymore.  You may, in a GUI, have a map of the 
OS window identifiers to the internal window objects, and that map is 
alive.  If you don't manually remove window objects from that list, 
they'll clutter your memory indefinitely.

If you are writing a complex piece of software, like a web browser, 
which is by design and specification prone to memory leaks, you better 
should add enough debugging code to inspect your memory and see the 
reasoning of the GC why objects are alive.  If you don't know what's 
going on in your program, you are too easily lost.

-- 
Bernd Paysan
"If you want it done right, you have to do it yourself"
http://bernd-paysan.de/

Thread

Olympic Spririt for Forth "Paul E. Bennett" <Paul_E.Bennett@topmail.co.uk> - 2012-09-15 22:28 +0100
  Re: Olympic Spririt for Forth Mark Wills <forthfreak@gmail.com> - 2012-09-18 02:08 -0700
    Re: Olympic Spririt for Forth anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-09-18 11:58 +0000
      Re: Olympic Spririt for Forth Mark Wills <forthfreak@gmail.com> - 2012-09-18 05:55 -0700
        Re: Olympic Spririt for Forth anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-09-19 12:50 +0000
        Re: Olympic Spririt for Forth theoriginalsnial@gmail.com - 2012-10-06 01:40 -0700
          Re: Olympic Spririt for Forth "A. K." <akk@nospam.org> - 2012-10-06 11:18 +0200
    Re: Olympic Spririt for Forth Spam@ControlQ.com - 2012-09-18 11:13 -0400
    Re: Olympic Spririt for Forth Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-09-19 15:56 -0700
    Re: Olympic Spririt for Forth theoriginalsnial@gmail.com - 2012-09-29 00:56 -0700
      Re: Olympic Spririt for Forth rickman <gnuarm@gmail.com> - 2012-09-30 12:31 -0400
        Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-09-30 11:53 -0700
          Re: Olympic Spririt for Forth rickman <gnuarm@gmail.com> - 2012-09-30 17:38 -0400
          Re: Olympic Spririt for Forth theoriginalsnial@gmail.com - 2012-10-02 04:16 -0700
            Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-02 10:52 -0700
              Re: Olympic Spririt for Forth Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-02 20:20 +0200
                Re: Olympic Spririt for Forth Spam@ControlQ.com - 2012-10-02 15:58 -0400
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-02 13:31 -0700
                Re: Olympic Spririt for Forth Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-03 02:59 +0200
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-02 19:08 -0700
                Re: Olympic Spririt for Forth Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-03 15:50 +0200
                Re: Olympic Spririt for Forth anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-10-03 14:04 +0000
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-03 10:29 -0700
                Re: Olympic Spririt for Forth anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-10-04 16:07 +0000
                Re: Olympic Spririt for Forth Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-03 20:27 +0200
                Re: Olympic Spririt for Forth anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-10-04 16:11 +0000
                Re: Olympic Spririt for Forth Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-04 20:12 +0200
                Re: Olympic Spririt for Forth anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-10-05 13:08 +0000
                Re: Olympic Spririt for Forth Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-05 17:48 +0200
                Re: Olympic Spririt for Forth Pablo Hugo Reda <pabloreda@gmail.com> - 2012-10-03 07:39 -0700
                Re: Olympic Spririt for Forth Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-03 20:24 +0200
                Re: Olympic Spririt for Forth Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-10-03 18:13 -0700
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-03 12:05 -0700
                Re: Olympic Spririt for Forth Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-03 22:20 +0200
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-04 12:41 -0700
                Re: Olympic Spririt for Forth Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-04 22:40 +0200
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-04 18:11 -0700
                Re: Olympic Spririt for Forth "Elizabeth D. Rather" <erather@forth.com> - 2012-10-04 15:26 -1000
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-04 18:54 -0700
                Re: Olympic Spririt for Forth "A. K." <akk@nospam.org> - 2012-10-05 08:19 +0200
                Re: Olympic Spririt for Forth "Elizabeth D. Rather" <erather@forth.com> - 2012-10-04 22:18 -1000
                Re: Olympic Spririt for Forth Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2012-10-05 08:20 +0100
                Re: Olympic Spririt for Forth anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-10-05 11:08 +0000
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-07 08:32 -0700
                Re: Olympic Spririt for Forth Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-07 21:39 +0200
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-07 21:03 -0700
                Re: Olympic Spririt for Forth Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-08 19:09 +0200
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-08 21:57 -0700
                Re: Olympic Spririt for Forth Mark Wills <forthfreak@gmail.com> - 2012-10-09 01:10 -0700
                Re: Olympic Spririt for Forth rickman <gnuarm@gmail.com> - 2012-10-09 14:12 -0400
                Re: Olympic Spririt for Forth "Paul E. Bennett" <Paul_E.Bennett@topmail.co.uk> - 2012-10-10 09:29 +0100
                Re: Olympic Spririt for Forth rickman <gnuarm@gmail.com> - 2012-10-10 21:13 -0400
                Re: Olympic Spririt for Forth Mark Wills <forthfreak@gmail.com> - 2012-10-10 02:02 -0700
                Re: Olympic Spririt for Forth rickman <gnuarm@gmail.com> - 2012-10-10 21:23 -0400
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-10 18:24 -0700
                Re: Olympic Spririt for Forth anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-10-11 17:21 +0000
                Re: Olympic Spririt for Forth Mark Wills <markrobertwills@yahoo.co.uk> - 2012-10-11 12:33 -0700
                Re: Olympic Spririt for Forth Mark Wills <forthfreak@gmail.com> - 2012-10-11 13:42 -0700
                Re: Olympic Spririt for Forth rickman <gnuarm@gmail.com> - 2012-10-11 18:59 -0400
                Re: Olympic Spririt for Forth "Elizabeth D. Rather" <erather@forth.com> - 2012-10-11 13:49 -1000
                Re: Olympic Spririt for Forth Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-12 03:27 +0200
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-12 19:18 -0700
                Re: Olympic Spririt for Forth Elizabeth D Rather <erather@forth.com> - 2012-10-12 18:53 -1000
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-12 22:55 -0700
                Re: Olympic Spririt for Forth Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-13 22:07 +0200
                Re: Olympic Spririt for Forth rickman <gnuarm@gmail.com> - 2012-10-13 00:56 -0400
                Re: Olympic Spririt for Forth Doug Hoffman <glidedog@gmail.com> - 2012-10-13 18:41 -0400
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-13 16:05 -0700
                Re: Olympic Spririt for Forth Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-14 02:57 +0200
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-14 00:26 -0700
                Re: Olympic Spririt for Forth Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-14 19:28 +0200
                Re: Olympic Spririt for Forth kenney@cix.compulink.co.uk - 2012-10-15 04:21 -0500
                Re: Olympic Spririt for Forth Mark Wills <markrobertwills@yahoo.co.uk> - 2012-10-14 03:17 -0700
                Re: Olympic Spririt for Forth Alex McDonald <blog@rivadpm.com> - 2012-10-14 15:43 -0700
                Re: Olympic Spririt for Forth rickman <gnuarm@gmail.com> - 2012-10-14 21:18 -0400
                Re: Olympic Spririt for Forth kenney@cix.compulink.co.uk - 2012-10-15 04:21 -0500
                Re: Olympic Spririt for Forth anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-10-15 10:03 +0000
                Re: Olympic Spririt for Forth visualforth@rocketmail.com - 2012-10-15 04:04 -0700
                Re: Olympic Spririt for Forth "Paul E. Bennett" <Paul_E.Bennett@topmail.co.uk> - 2012-10-15 21:34 +0100
                Re: Olympic Spririt for Forth rickman <gnuarm@gmail.com> - 2012-10-15 17:51 -0400
                Re: Olympic Spririt for Forth Mark Wills <forthfreak@gmail.com> - 2012-10-16 01:09 -0700
                Re: Olympic Spririt for Forth visualforth@rocketmail.com - 2012-10-16 02:15 -0700
                Re: Olympic Spririt for Forth visualforth@rocketmail.com - 2012-10-16 02:30 -0700
                Re: Olympic Spririt for Forth rickman <gnuarm@gmail.com> - 2012-10-16 15:18 -0400
                Re: Olympic Spririt for Forth rickman <gnuarm@gmail.com> - 2012-10-14 21:05 -0400
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-14 18:19 -0700
                Re: Olympic Spririt for Forth rickman <gnuarm@gmail.com> - 2012-10-15 17:58 -0400
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-15 15:21 -0700
                Re: Olympic Spririt for Forth rickman <gnuarm@gmail.com> - 2012-10-15 18:51 -0400
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-15 17:20 -0700
                Re: Olympic Spririt for Forth "Paul E. Bennett" <Paul_E.Bennett@topmail.co.uk> - 2012-10-12 22:41 +0100
                Re: Olympic Spririt for Forth "Paul E. Bennett" <Paul_E.Bennett@topmail.co.uk> - 2012-10-12 22:24 +0100
                Re: Olympic Spririt for Forth Mark Wills <forthfreak@gmail.com> - 2012-10-09 01:20 -0700
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-09 08:56 -0700
                Re: Olympic Spririt for Forth Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-10-09 11:14 -0500
                Re: Olympic Spririt for Forth Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-09 22:47 +0200
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-09 18:31 -0700
                Re: Olympic Spririt for Forth Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-10-09 22:55 -0500
                Re: Olympic Spririt for Forth Mark Wills <forthfreak@gmail.com> - 2012-10-09 01:04 -0700
                Re: Olympic Spririt for Forth Bernd Paysan <bernd.paysan@gmx.de> - 2012-10-09 17:30 +0200
                Re: Olympic Spririt for Forth "Elizabeth D. Rather" <erather@forth.com> - 2012-10-04 11:31 -1000
                Re: Olympic Spririt for Forth kenney@cix.compulink.co.uk - 2012-10-03 16:53 -0500
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-03 16:50 -0700
                Re: Olympic Spririt for Forth Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-10-03 18:06 -0700
                Re: Olympic Spririt for Forth kenney@cix.compulink.co.uk - 2012-10-03 16:53 -0500
              Re: Olympic Spririt for Forth theoriginalsnial@gmail.com - 2012-10-03 00:38 -0700
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-03 02:06 -0700
                Re: Olympic Spririt for Forth theoriginalsnial@gmail.com - 2012-10-03 03:38 -0700
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-03 13:40 -0700
                Re: Olympic Spririt for Forth theoriginalsnial@gmail.com - 2012-10-04 01:00 -0700
                Re: Olympic Spririt for Forth "Elizabeth D. Rather" <erather@forth.com> - 2012-10-03 22:32 -1000
                Re: Olympic Spririt for Forth theoriginalsnial@gmail.com - 2012-10-04 04:49 -0700
                Re: Olympic Spririt for Forth Mark Wills <forthfreak@gmail.com> - 2012-10-04 01:35 -0700
                Re: Olympic Spririt for Forth Howerd <howerdo@yahoo.co.uk> - 2012-10-06 06:17 -0700
                Re: Olympic Spririt for Forth arc <arc.deletethis@vorsicht-bissig.de> - 2012-10-07 23:45 +1300
                Re: Olympic Spririt for Forth theoriginalsnial@gmail.com - 2012-10-10 09:34 -0700
                Re: Olympic Spririt for Forth Mark Wills <forthfreak@gmail.com> - 2012-10-10 12:16 -0700
                Re: Olympic Spririt for Forth Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-10-10 20:04 -0500
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-04 11:41 -0700
                Re: Olympic Spririt for Forth theoriginalsnial@gmail.com - 2012-10-05 12:29 -0700
                Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-06 19:26 -0700
                Re: Olympic Spririt for Forth albert@spenarnc.xs4all.nl (Albert van der Horst) - 2012-10-05 19:09 +0000
            Re: Olympic Spririt for Forth "Paul E. Bennett" <Paul_E.Bennett@topmail.co.uk> - 2012-10-02 22:03 +0100
            Re: Olympic Spririt for Forth Ilya Tarasov <ilya74.tarasov@gmail.com> - 2012-10-06 08:30 -0700
  Re: Olympic Spririt for Forth ilya74.tarasov@gmail.com - 2012-09-29 07:09 -0700
  Re: Olympic Spririt for Forth visualforth@rocketmail.com - 2012-10-09 14:30 -0700
    Re: Olympic Spririt for Forth rickman <gnuarm@gmail.com> - 2012-10-09 18:27 -0400
      Re: Olympic Spririt for Forth "Paul E. Bennett" <Paul_E.Bennett@topmail.co.uk> - 2012-10-10 09:46 +0100
      Re: Olympic Spririt for Forth visualforth@rocketmail.com - 2012-10-10 03:52 -0700
        Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-10 06:01 -0700
          Re: Olympic Spririt for Forth visualforth@rocketmail.com - 2012-10-10 07:42 -0700
            Re: Olympic Spririt for Forth theoriginalsnial@gmail.com - 2012-10-10 09:10 -0700
            Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-10 10:34 -0700
              Re: Olympic Spririt for Forth visualforth@rocketmail.com - 2012-10-11 17:17 -0700
                Re: Olympic Spririt for Forth rickman <gnuarm@gmail.com> - 2012-10-13 01:03 -0400
        Re: Olympic Spririt for Forth rickman <gnuarm@gmail.com> - 2012-10-10 21:59 -0400
          Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-10 20:57 -0700
            Re: Olympic Spririt for Forth visualforth@rocketmail.com - 2012-10-11 02:05 -0700
            Re: Olympic Spririt for Forth Matthias Koch <koch@pci.uni-hannover.de> - 2012-10-15 11:20 +0200
          Re: Olympic Spririt for Forth albert@spenarnc.xs4all.nl (Albert van der Horst) - 2012-10-15 11:53 +0000
            Re: Olympic Spririt for Forth Paul Rubin <no.email@nospam.invalid> - 2012-10-15 08:52 -0700
              Re: Olympic Spririt for Forth visualforth@rocketmail.com - 2012-10-15 11:53 -0700
                Re: Olympic Spririt for Forth rickman <gnuarm@gmail.com> - 2012-10-15 18:00 -0400

csiph-web