Austin Foxley wrote:
On 04/16/2010 07:37 AM, Timo Teräs wrote:
Ok, second try on getting the libc - libpthread interactions right.
This includes the Joakim's patch for protected symbols, with a
little fix from me.
I thought the hidden symbol thing would work, because I thought when
you turned on stdio-futexes, everywhere used futexes. I didn't
realize other places were using __pthread* symbols directly...
Yeah, that was my impression too. But it turns out to work
differently :/
We'll need to patch all the other arch's ldso as well to handle
protected symbols, but I'll apply this for now. If I'm not mistaken,
other archs will be no worse off than they are now in this situation.
Right?
Right. It makes things slightly better for other archs too, but
in practice it won't work until they support protected symbols too.
These patches finally cleaned up the _pthread_cleanup* mess for me
though. Thanks!
Yes, it's a bit better now.
The whole __GI_ aliasing thingy on libc side is a bit weird still.
I wonder if we could remove all that and just use the proper
visibility attributes. But I guess that's another story.
Oh well. At least nptl on x86 is starting to get to usable state
now. There will be still problems application without libpthread
goes and dlopen()'s a library loading libpthread. But that's
easily "fixable" by just linking the main app to libpthread.
Will continue testing next week.
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