From: Paolo Bonzini <pbonzini@redhat.com>
To: famz@redhat.com
Cc: peter.maydell@linaro.org, mjt@tls.msk.ru, qemu-devel@nongnu.org,
alex@alex.org.uk, vilanova@ac.upc.edu, rth@twiddle.net
Subject: Re: [Qemu-devel] [PATCH v10 5/8] module: implement module loading
Date: Mon, 16 Sep 2013 13:33:06 +0200 [thread overview]
Message-ID: <5236EC72.20900@redhat.com> (raw)
In-Reply-To: <20130916112917.GA21374@T430s.nay.redhat.com>
Il 16/09/2013 13:29, Fam Zheng ha scritto:
> An idea for single .so file:
> - before loads a .so, an empty initializer list is created.
> - module_init adds a __attribute__((constructor)) function, which appends
> its real initializer to the initializer list. So this function is
> automatically called after dlopen().
> - make init_$(date +%s$$$RANDOM) a dummy symbol.
> - module_load first checks the presense of the symbol, if yes, call the
> functions in the initializer list. Else clean up and unload .so.
>
> Does this enable multiple calls of module_init()?
Yes. Basically you are delaying the constructors; that would work.
> OTOH. As for multiple spice modules, is it possible to solve it by having a
> spice-common.o and link all spice modules to it, to share code?
Looks like there is global state in ui/spice-core.c, so likely no.
Paolo
next prev parent reply other threads:[~2013-09-16 11:33 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-16 6:50 [Qemu-devel] [PATCH v10 0/8] Shared Library Module Support Fam Zheng
2013-09-16 6:50 ` [Qemu-devel] [PATCH v10 1/8] ui/Makefile.objs: delete unnecessary cocoa.o dependency Fam Zheng
2013-09-16 6:50 ` [Qemu-devel] [PATCH v10 2/8] make.rule: fix $(obj) to a real relative path Fam Zheng
2013-09-16 6:50 ` [Qemu-devel] [PATCH v10 3/8] rule.mak: allow per object cflags and libs Fam Zheng
2013-09-16 6:50 ` [Qemu-devel] [PATCH v10 4/8] build-sys: introduce common-obj-m and block-obj-m for DSO Fam Zheng
2013-09-16 6:50 ` [Qemu-devel] [PATCH v10 5/8] module: implement module loading Fam Zheng
2013-09-16 8:59 ` Daniel P. Berrange
2013-09-16 9:28 ` Fam Zheng
2013-09-16 22:16 ` Richard Henderson
2013-09-17 0:47 ` Fam Zheng
2013-09-16 9:44 ` Paolo Bonzini
2013-09-16 9:51 ` Fam Zheng
2013-09-16 10:09 ` Paolo Bonzini
2013-09-16 10:14 ` Daniel P. Berrange
2013-09-16 10:18 ` Paolo Bonzini
2013-09-16 10:21 ` Daniel P. Berrange
2013-09-16 10:30 ` Paolo Bonzini
2013-09-16 11:29 ` Fam Zheng
2013-09-16 11:33 ` Paolo Bonzini [this message]
2013-09-16 11:46 ` Fam Zheng
2013-09-16 22:31 ` Richard Henderson
2013-09-17 1:29 ` Fam Zheng
2013-09-17 5:40 ` Richard Henderson
2013-09-18 11:45 ` Paolo Bonzini
2013-09-18 14:44 ` Richard Henderson
2013-09-18 15:00 ` Paolo Bonzini
2013-09-17 8:50 ` Wenchao Xia
2013-09-16 10:57 ` Gerd Hoffmann
2013-09-16 11:00 ` Paolo Bonzini
2013-09-16 22:38 ` Richard Henderson
2013-09-16 10:24 ` Alex Bligh
2013-09-16 10:38 ` Paolo Bonzini
2013-09-16 11:00 ` Alex Bligh
2013-09-16 11:04 ` Daniel P. Berrange
2013-09-16 11:27 ` Alex Bligh
2013-09-16 11:08 ` Paolo Bonzini
2013-09-16 11:30 ` Alex Bligh
2013-09-17 8:26 ` Wenchao Xia
2013-09-16 10:43 ` Fam Zheng
2013-09-16 11:05 ` Daniel P. Berrange
2013-09-16 12:36 ` Gerd Hoffmann
2013-09-17 5:55 ` Fam Zheng
2013-09-17 6:33 ` Alex Bligh
2013-09-17 6:40 ` Fam Zheng
2013-09-16 6:50 ` [Qemu-devel] [PATCH v10 6/8] Makefile: install modules with "make install" Fam Zheng
2013-09-16 6:50 ` [Qemu-devel] [PATCH v10 7/8] .gitignore: ignore module related files (dll, so, mo) Fam Zheng
2013-09-16 6:50 ` [Qemu-devel] [PATCH v10 8/8] block: convert block drivers linked with libs to modules Fam Zheng
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=5236EC72.20900@redhat.com \
--to=pbonzini@redhat.com \
--cc=alex@alex.org.uk \
--cc=famz@redhat.com \
--cc=mjt@tls.msk.ru \
--cc=peter.maydell@linaro.org \
--cc=qemu-devel@nongnu.org \
--cc=rth@twiddle.net \
--cc=vilanova@ac.upc.edu \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.