From: Andrew Haley <aph@redhat.com>
To: "Sylvain Marié" <sylvainmarie2@yahoo.fr>
Cc: java@gcc.gnu.org, mark@klomp.org
Subject: Re: [GCJ-core] dynamically unloading native libraries
Date: Wed, 05 Nov 2008 11:08:00 -0000 [thread overview]
Message-ID: <49117E7B.70104@redhat.com> (raw)
In-Reply-To: <486895.21159.qm@web28503.mail.ukl.yahoo.com>
Sylvain Marié wrote:
> Thank you for putting the topic back on the table,
>
>> We seem to never even call JNI_OnUnload on the jni libraries.
>
> That's exactly my point - and also even libraries that do not contain JNI at all
> (simple .so without any relation to java - I know it is not a very useful case but it is
> very simple to test with a dummy .so).
>
> But the root cause of the problem is a bit more complex:
>
> a) As you mentioned, ClassLoaders don't unload unused native libraries when they are finalized.
>
> but also
>
> b) ClassLoaders don't even seem to be finalized when they are not used any more.
> (no alive instances, etc.)
>
> So even correcting a) would not help, we should first try to understand why
> ClassLoaders are never gc'ed.
Yes. I can't think of any immediate reason why they aren't: it's a matter
worth investigating.
Andrew.
next prev parent reply other threads:[~2008-11-05 11:08 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-05 10:45 Sylvain Marié
2008-11-05 11:08 ` Andrew Haley [this message]
-- strict thread matches above, loose matches on Subject: below --
2008-10-07 12:29 Sylvain Marié
2008-10-07 12:42 ` Andrew Haley
2008-11-02 17:43 ` Mark Wielaard
2008-11-03 10:46 ` Andrew Haley
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=49117E7B.70104@redhat.com \
--to=aph@redhat.com \
--cc=java@gcc.gnu.org \
--cc=mark@klomp.org \
--cc=sylvainmarie2@yahoo.fr \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).