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From Stas Bekman <>
Subject Re: google-coredumper
Date Fri, 18 Mar 2005 23:12:13 GMT
Geoffrey Young wrote:
> Stas Bekman wrote:
>>This could be a nice addition to our toolkit:
>>A neat tool for creating GDB readable coredumps from multithreaded
>>applications -- while the program is running.
>>The coredumper library can be compiled into applications to create core
>>dumps of the running program, without terminating. It supports both
>>single- and multi-threaded core dumps, even if the kernel does not
>>natively support multi-threaded core files.
> we must be reading the same irc threads :)
> sounds like something worth looking into, for sure.

And a related post from httpd-dev:

-------- Original Message --------
Subject: mod_coredumper
Date: Thu, 17 Mar 2005 23:46:46 -0800
From: Paul Querna <>

Google released several things as open source today:

Their CoreDumper library is actually very cool, and I hacked it into an
apache module:

Just do a 'SetHandler download-core', and you can download a GDB
computable core file, from the instance that the request took place.

I am not sure how useful it will be in the long run for debugging, but I
think it could be nice for taking snapshots mid-processing in the
multi-threaded MPMs.


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