From: Helmut Eller <eller.helmut@gmail.com>
To: emacs-devel@gnu.org
Subject: Re: Finding objects on C stack - alternate GCPRO
Date: Wed, 16 Nov 2011 11:18:16 +0100 [thread overview]
Message-ID: <m2sjlov09j.fsf@gmail.com> (raw)
In-Reply-To: 4EC38B72.1000101@yandex.ru
* Dmitry Antipov [2011-11-16 10:07] writes:
> Everyone agrees that GGPROs are ugly and painful. On the other side,
> current C stack marking code introduces substantial overhead by
> maintaining red-black tree. And, since C stack marking is
> conservative, it becomes very tricky to implement GC that may
> relocate live objects (copying or compacting approach).
>
> But there is another method to implement GCPROs. It looks not very
> portable beyond GNU C since it uses __attribute__ ((cleanup (function)))
> and compound statement expressions C extensions. But it doesn't
> require UNGCPRO and dumbs like 'struct gcpro gcpro1, struct gcpro2, ...'.
> And I believe it should work across longjmps.
And we could use C++ with destructors.
Helmut
next prev parent reply other threads:[~2011-11-16 10:18 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-16 10:07 Finding objects on C stack - alternate GCPRO Dmitry Antipov
2011-11-16 10:18 ` Helmut Eller [this message]
2011-11-16 10:33 ` Dmitry Antipov
2011-11-16 23:27 ` Richard Stallman
2011-11-17 4:17 ` Stephen J. Turnbull
2011-11-17 19:12 ` Richard Stallman
2011-11-16 11:06 ` Eli Zaretskii
2011-11-17 12:50 ` Stephen Berman
2011-11-17 16:50 ` Eli Zaretskii
2011-11-16 14:41 ` Stefan Monnier
2011-11-16 18:19 ` Tom Tromey
2011-11-16 21:07 ` Ken Raeburn
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