[Patch] nginx to use libatomic_ops
mdounin at mdounin.ru
Mon Oct 12 04:54:41 MSD 2009
On Tue, Sep 29, 2009 at 12:26:43PM +0200, W-Mark Kubacki wrote:
> 2009/9/29 Igor Sysoev <is at rambler-co.ru>:
> > On Fri, Sep 25, 2009 at 09:46:33PM +0200, W-Mark Kubacki wrote:
> >> I have experienced SEGFAULTs on ARM using fastcgi and discovered it
> >> compiles with "NGX_HAVE_ATOMIC_OPS 0" on 'other' architectures than
> >> x86, amd64, sparc and the such defined in src/os/unix/ngx_atomic.h.
> >> Therefore I'd like to contribute the patch linked below , which
> >> introduces configure option "--with-libatomic" [...]
> > Thank you for the patch and information about gcc 4.1.
> > I'm going to add gcc builtins, since they are slighty lesser than
> > my code at least on x86.
> > I'm not sure should libatomic be added, since gcc 4.1+ is common compiler
> > these days.
> > Could you show backtrace of the segfault ? I could not reproduce it
> > on x86 with disabled atomic ops.
> The segfaults happened on ARM architecture, not x86.
> Eliminating lock_file by introducing atomic ops the only code which
> got not called after that were the emulations at the bottom of
Just for the record: I've tried to reproduce the problem on
QEMU-emulated ARM but failed. Everything works fine for me.
Could you please provide some more details? Hardware, OS,
nginx -V output, config and request pattern which triggers fault,
More information about the nginx