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From: Andreas Schwab <schwab@linux-m68k.org>
To: Eli Zaretskii <eliz@gnu.org>
Cc: "Óscar Fuentes" <ofv@wanadoo.es>, emacs-devel@gnu.org
Subject: Re: Emacs and Gnome Canvas
Date: Sat, 17 Jul 2010 10:34:42 +0200	[thread overview]
Message-ID: <m2lj9a4icd.fsf@igel.home> (raw)
In-Reply-To: <83630efsl8.fsf@gnu.org> (Eli Zaretskii's message of "Sat, 17 Jul 2010 10:57:55 +0300")

Eli Zaretskii <eliz@gnu.org> writes:

> Emacs overrides the default `malloc' and `sbrk' functions, at least on
> some platforms, and replaces them with its own implementations.  Those
> implementations relocate large objects on the heap behind the scenes,
> whenever Emacs sees fit.  I'm not sure this is "usable from C++" out
> of the box.  C++ objects that hold pointers to arrays might suddenly
> find those pointers invalidated by the above-mentioned relocation.

The relocating allocator can of course only relocate objects it knows
about, so I don't know what should be the issue with C++?  The objects
allocated via new are just part of the normal malloc space that never
gets touched by ralloc.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."



  reply	other threads:[~2010-07-17  8:34 UTC|newest]

Thread overview: 118+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-07-13 19:02 Emacs, QT and Cairo Was: Re: Efforts to attract more users? Stephen Eilert
2010-07-13 19:29 ` Chong Yidong
2010-07-13 19:51   ` Chad Brown
2010-07-13 20:48 ` Jan Djärv
2010-07-13 22:30   ` Emacs, QT and Cairo Chad Brown
2010-07-14  1:39     ` Stephen J. Turnbull
2010-07-14  2:32       ` Óscar Fuentes
2010-07-14  7:29     ` Eli Zaretskii
2010-07-14 18:37       ` Chad Brown
2010-07-14 20:45         ` Eli Zaretskii
2010-07-14 21:24           ` Óscar Fuentes
2010-07-15  6:55             ` Emacs and Gnome Canvas (was: Emacs, QT and Cairo) Eli Zaretskii
2010-07-15  7:46               ` Emacs and Gnome Canvas Jan Djärv
2010-07-15  7:53                 ` Jan Djärv
2010-07-15  8:36                   ` joakim
2010-07-15  8:40                   ` Eli Zaretskii
2010-07-15  8:50                     ` Jan Djärv
2010-07-15  8:38                 ` Eli Zaretskii
2010-07-15  8:48                   ` Jan Djärv
2010-07-15  8:59                     ` Eli Zaretskii
2010-07-15  9:29                       ` Jan Djärv
2010-07-15 10:24                         ` Eli Zaretskii
2010-07-15 10:54                           ` Jan Djärv
2010-07-15 12:27                             ` Eli Zaretskii
2010-07-15 14:18                               ` Óscar Fuentes
2010-07-15 15:14                                 ` Eli Zaretskii
2010-07-16  6:33                                   ` Miles Bader
2010-07-15 16:00                                 ` Chong Yidong
2010-07-15 16:27                                   ` Óscar Fuentes
2010-07-15 17:06                                     ` Eli Zaretskii
2010-07-15 17:48                                       ` Óscar Fuentes
2010-07-15 18:06                                         ` Eli Zaretskii
2010-07-15 21:27                                           ` Óscar Fuentes
2010-07-16  8:17                                             ` Eli Zaretskii
2010-07-16 14:24                                               ` Óscar Fuentes
2010-07-16 15:19                                                 ` Eli Zaretskii
2010-07-16 16:07                                                   ` Óscar Fuentes
2010-07-16 18:43                                                     ` Eli Zaretskii
2010-07-16 21:21                                                       ` Óscar Fuentes
2010-07-16 23:44                                                         ` Chad Brown
2010-07-17  0:08                                                           ` Óscar Fuentes
2010-07-17  7:57                                                             ` Eli Zaretskii
2010-07-17  8:34                                                               ` Andreas Schwab [this message]
2010-07-17  9:10                                                                 ` Eli Zaretskii
2010-07-17  9:40                                                                   ` Andreas Schwab
2010-07-17 10:23                                                                     ` Eli Zaretskii
2010-07-17 13:49                                                                       ` Óscar Fuentes
2010-07-17  7:27                                                         ` Eli Zaretskii
2010-07-17 13:42                                                           ` Óscar Fuentes
2010-07-17 15:27                                                             ` Eli Zaretskii
2010-07-17 21:53                                                               ` Óscar Fuentes
2010-07-18  1:42                                                               ` Miles Bader
2010-07-18  2:45                                                                 ` Óscar Fuentes
2010-07-18  8:06                                                                   ` Chad Brown
2010-07-18 14:43                                                                     ` Óscar Fuentes
2010-07-21  8:34                                                             ` Stefan Monnier
2010-07-22 14:26                                         ` Stefan Monnier
2010-07-15 17:22                                     ` Chong Yidong
2010-07-15 18:02                                       ` Óscar Fuentes
2010-07-15 22:10                                         ` Stephen Eilert
2010-07-16  7:52                                           ` Eli Zaretskii
2010-07-16  2:14                                   ` YAMAMOTO Mitsuharu
2010-07-16  7:33                                     ` Jan Djärv
2010-07-16  9:52                                       ` Eli Zaretskii
2010-07-16 10:15                                         ` YAMAMOTO Mitsuharu
2010-07-16 10:39                                           ` Eli Zaretskii
2010-07-16 12:42                                             ` Jan Djärv
2010-07-17  3:50                                               ` YAMAMOTO Mitsuharu
2010-07-17  8:33                                                 ` Jan Djärv
2010-07-17  8:38                                                   ` YAMAMOTO Mitsuharu
2010-07-17  9:18                                                     ` Jan Djärv
2010-07-17  9:25                                                       ` YAMAMOTO Mitsuharu
2010-07-17 10:26                                                         ` Jan Djärv
2010-07-18  3:51                                                           ` YAMAMOTO Mitsuharu
2010-07-18  7:10                                                             ` Jan Djärv
2010-07-18  7:45                                                               ` YAMAMOTO Mitsuharu
2010-07-18  9:06                                                                 ` Jan Djärv
2010-07-19  0:50                                                                   ` YAMAMOTO Mitsuharu
2010-07-17  1:00                                             ` YAMAMOTO Mitsuharu
2010-07-17  1:40                                               ` YAMAMOTO Mitsuharu
2010-07-17  8:04                                               ` Eli Zaretskii
2010-07-17  8:25                                                 ` YAMAMOTO Mitsuharu
2010-07-16 12:21                                         ` Jan Djärv
2010-07-16 10:01                                       ` YAMAMOTO Mitsuharu
2010-07-16 12:26                                         ` Jan Djärv
2010-07-16 14:05                                           ` Davis Herring
2010-07-16 17:38                                             ` Jan Djärv
2010-07-17  1:12                                               ` YAMAMOTO Mitsuharu
2010-07-17  7:14                                                 ` Eli Zaretskii
2010-07-17  7:31                                                   ` YAMAMOTO Mitsuharu
2010-07-17  8:12                                                     ` Eli Zaretskii
2010-07-17  8:32                                                       ` YAMAMOTO Mitsuharu
2010-07-15 14:24                               ` Jan Djärv
2010-07-15 14:35                                 ` Eli Zaretskii
2010-07-15 15:16                                   ` Jan Djärv
2010-07-15 15:20                                     ` Eli Zaretskii
2010-07-15 17:14                                       ` Jan Djärv
2010-07-15  9:20               ` Andy Wingo
2010-07-15 18:41               ` Emacs and Gnome Canvas (was: Emacs, QT and Cairo) Dirk-Jan C. Binnema
2010-07-15 21:51                 ` Emacs and Gnome Canvas Óscar Fuentes
2010-07-15 22:21                   ` Bruce Stephens
2010-07-27 21:24     ` Emacs, QT and Cairo Stefan Monnier
2010-07-27 21:36       ` Chad Brown
2010-07-28  3:05         ` Eli Zaretskii
2010-07-14  8:59 ` Emacs, QT and Cairo Was: Re: Efforts to attract more users? YAMAMOTO Mitsuharu
2010-07-14  9:41   ` Emacs, QT and Cairo David Engster
2010-07-14  9:56     ` Jan Djärv
2010-07-14 13:50     ` Drew Adams
2010-07-14 14:14       ` David Engster
2010-07-14 14:28         ` joakim
2010-07-14 15:41   ` Emacs, QT and Cairo Was: Re: Efforts to attract more users? Chong Yidong
2010-07-14 16:17     ` joakim
2010-07-14 18:04       ` Jan Djärv
2010-07-15 23:15 ` Andrew W. Nosenko
2010-07-16  7:41   ` Jan Djärv
2010-07-16 10:24     ` Andrew W. Nosenko
2010-07-16 12:36       ` Jan Djärv
  -- strict thread matches above, loose matches on Subject: below --
2010-07-17 19:02 Emacs and Gnome Canvas grischka

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