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From "Bill Stoddard" <b...@wstoddard.com>
Subject Re: cvs commit: httpd-2.0/server scoreboard.c
Date Thu, 24 Jan 2002 14:57:24 GMT
Bill,
This triggered a question...

I have not followed the discussion on this thread closely, but are you requiring the
ScoreBoardFile directive on Windows to name the shmem?  I hope not.....

Bill

> > aaron       02/01/22 22:51:18
> >
> >   Modified:    server   scoreboard.c
> >   Log:
> >   Although this patch is technically correct, I'm not happy with
> >   the way it gets things done. OTOH, it is a simple enough change
> >   to get things working correctly for now. I will come up with
> >   the right way to do this in the next couple days.
> >
> >   This patch re-enables the use of anonymous shared memory in the
> >   scoreboard on platforms that have it.
>
> Well chicken 'n eggs... one way or another this patch broke win32.
>
> Now I'm researching what/how to get both anon and file backed win32
> shm.c working.  Fixing that bug makes the win32 startup failures
> disappear.
>
> But this does break a simple idea behind the win32 shmem.  I had
> intended to create the scoreboard as shared, only if named.  The
> create anon _does_ create anon memory on win32, ENOTIMPL is not
> an acceptable solution.
>
> The issue is that we are a forked platform.  Therefore, you can't
> make the assumption that anon is preferred.  Maybe you prefer it,
> but we on win32 sure don't, and other platforms may agree for other
> reasons.
>
> So I suggest we back out the patch, and instead, use this logic;
> rather than always creating the DEFAULT scoreboard name, leave it
> Null on all platforms that support anon memory.  If the user specifies
> a filename, use it.  If the user omits the ScoreboardName, then they
> receive anon memory.  And if APR lacks anon support, keep using a
> default scoreboard name on the platform.
>
> Does this make any sense?  It would allow 3rd party apps to share and
> access the scoreboard by name, when the user configures it, and regardless
> of our default preference for that platform.
>
> Bill
>


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