Re: [glib] malloc and bdwgc

[张海 <dreaming in code zh gmail com>]

Yes it should be able to intercept the call, but it feels much too
hacky because I'll always need a wrapper exectuable for that, or my
binray won't work correctly. Just also came across this,
http://stackoverflow.com/questions/262439/create-a-wrapper-function-for-malloc-and-free-in-c
. It says I can define a custom wrapper malloc and free, then use
dlsym for the original ones. Sounds a bit cleaner.

However in both cases, I cannot think of a way to make GC_malloc() to
call the original malloc without my hook.


--
张海
浙江大学 计算机科学与技术
Blog: http://blog.zhanghai.me/
Github: https://github.com/DreaminginCodeZH


2016-01-07 18:13 GMT+08:00 Ben Iofel <iofelben gmail com>:
> Can you use LD_PRELOAD to hook into malloc?
>
>
> On Thu, Jan 7, 2016, 2:10 AM 张海 <dreaming in code zh gmail com> wrote:
> > I'm using glib without the whole GObject system and reference counting
> > mechanism, and I'd like to integrate bdwgc
> > (https://github.com/ivmai/bdwgc/) because of the complexity of my
> > program.
> >
> > I've read about using GMemVTable to redirect memory allocation of glib
> > to GC_malloc, however as in
> > https://mail.gnome.org/archives/commits-list/2015-July/msg05892.html ,
> > such mechanism no longer works, and even more unfortunately it says
> > glib allocates memory before main() so it seems that I'm even unable
> > to hook to malloc in time as in
> > http://www.gnu.org/software/libc/manual/html_node/Hooks-for-Malloc.html
> > .
> >
> > Can I use bdwgc with glib >= 2.4.6? If so, how can I achieve that
> > correctly?
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