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From Rich Bowen <>
Subject Re: svn commit: r1395417 - in /httpd/httpd/trunk/docs/manual: mpm.html.en mpm.xml
Date Mon, 08 Oct 2012 15:26:07 GMT

On Oct 8, 2012, at 10:32 AM, Jeff Trawick wrote:

> It isn't that simple.
> APR_POLLSET_THREADSAFE has to be supported, and that is more than the
> well-known capabilities of threads and polling.
> APR_POLLSET_THREADSAFE means that the platform has an advanced polling
> mechanism which allows pollsets to be manipulated in a certain way,
> and that APR has an implementation that uses that mechanism.
> Linux, Solaris, and FreeBSD/Mac OS X are platforms that satisify both
> characteristics.  z/OS is a platform that has an advanced polling
> mechanism but without an APR implementation in the stable branches.
> Neither AIX nor HP-UX have APR implementations, though I'd guess that
> the OS has the feature and nobody has gotten around to exploiting it
> in APR.

Thank you for the clarification. I'll further clarify what I put in the docs as soon as I
have a chance.

Rich Bowen

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