From: Mike Gran <spk121@yahoo.com>
To: "Andy Wingo" <wingo@pobox.com>, "Ludovic Courtès" <ludo@gnu.org>
Cc: "guile-devel@gnu.org" <guile-devel@gnu.org>
Subject: Re: allocation within critical sections
Date: Thu, 16 Feb 2012 18:46:02 -0800 (PST) [thread overview]
Message-ID: <1329446762.84665.YahooMailNeo@web37906.mail.mud.yahoo.com> (raw)
In-Reply-To: <874nuqpg6k.fsf@pobox.com>
> From: Andy Wingo <wingo@pobox.com>
>> Can you explain what happens here? Is it a deadlock? What’s at
>> ports.c:575?
>
> It was a deadlock, but I fixed it. It was something that locked all
> weak sets, but while doing so allocated memory. Allocating memory ran
> finalizers which tried to manipulate the port set, but that lock was
> already taken: deadlock.
>
> The solution will be to run finalizers in a separate thread, as the JVM
> does.
As an aside, I can get a similar sort of deadlock during garbage
collection of SMOBs if my smob_free function calls a scheme function.
But the manual does note that you should not call any functions in
SMOB GC finalizers, so that wouldn't happen if I actually followed the
instructions.
-Mike
next prev parent reply other threads:[~2012-02-17 2:46 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-09 19:15 allocation within critical sections Andy Wingo
2012-02-13 10:38 ` Andy Wingo
2012-02-13 15:29 ` Andy Wingo
2012-02-16 21:30 ` Ludovic Courtès
2012-02-16 22:27 ` Andy Wingo
2012-02-17 2:46 ` Mike Gran [this message]
2012-02-17 8:16 ` Andy Wingo
2012-02-17 10:32 ` Mike Gran
2012-02-17 15:20 ` Andy Wingo
2012-02-17 22:59 ` Ludovic Courtès
2012-02-19 9:42 ` Andy Wingo
2012-02-19 20:56 ` Ludovic Courtès
2012-02-19 21:29 ` Andy Wingo
2012-02-24 15:04 ` Andy Wingo
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