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[Patch] nginx to use libatomic_ops

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File Name File Size   Posted by Date  
nginx-0.8.16-libatomic.patch 3.9 KB open | download W-Mark Kubacki 10/09/2009 Read message
W-Mark Kubacki
September 25, 2009 03:52PM
Dear developers,

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 [1], which
introduces configure option "--with-libatomic" and which makes nginx
use atomic operations of that library on these 'other' architectures.
For more information on the library please see [2]. (Indeed, this does
not result in additional runtime dependencies and the atomic ops
compile to less code than those of newer GCC versions [3].)

--with-libatomic compiles on ARM, does no SEGFAULT, and yields higher
requests per second than with the otherwise used lock file.

The option is disabled by default, and even if enabled still used as
last resort. I hope that after a brief review (I have little
experience with configure scripts) you can integrate it in the next
release.

--
W-Mark Kubacki
http://mark.ossdl.de/

[1] https://svn.hurrikane.de/all/ossdl/www-servers/nginx/files/nginx-0.8.16-libatomic.patch
[2] http://www.hpl.hp.com/research/linux/atomic_ops/
http://bdwgc.cvs.sourceforge.net/viewvc/bdwgc/bdwgc/libatomic_ops-1.2/
[3] http://gcc.gnu.org/onlinedocs/gcc-4.1.0/gcc/Atomic-Builtins.html
for gcc 4.1.0 and later
Subject Author Posted

[Patch] nginx to use libatomic_ops

W-Mark Kubacki September 25, 2009 03:52PM

Re: [Patch] nginx to use libatomic_ops

Igor Sysoev September 29, 2009 04:26AM

Re: [Patch] nginx to use libatomic_ops

W-Mark Kubacki September 29, 2009 06:32AM

Re: [Patch] nginx to use libatomic_ops

Igor Sysoev October 08, 2009 11:50AM

Re: [Patch] nginx to use libatomic_ops Attachments

W-Mark Kubacki October 09, 2009 06:04AM

Re: [Patch] nginx to use libatomic_ops

Maxim Dounin October 09, 2009 07:28AM

Re: [Patch] nginx to use libatomic_ops

Igor Sysoev October 09, 2009 09:08AM

Re: [Patch] nginx to use libatomic_ops

Maxim Dounin October 11, 2009 09:00PM

Re: [Patch] nginx to use libatomic_ops

W-Mark Kubacki October 12, 2009 07:22AM



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