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Re: [HACKERS] backend freezeing on win32 fixed (I hope ;-) )
- To: Tom Lane <tgl@sss.pgh.pa.us>
- Subject: Re: [HACKERS] backend freezeing on win32 fixed (I hope ;-) )
- From: Chris Faylor <cgf@cygnus.com>
- Date: Mon, 16 Aug 1999 13:09:49 -0400
- Cc: Horak Daniel <horak@mmp.plzen-city.cz>, "'pgsql-hackers@postgreSQL.org'" <pgsql-hackers@postgreSQL.org>, "'cygwin@sourceware.cygnus.com'" <cygwin@sourceware.cygnus.com>, "'Joost Kraaijeveld'" <JKraaijeveld@askesis.nl>
- References: <2E7F82FAC1FCD2118E1500A024B3BF907DED3B@exchange.mmp.plzen-city.cz> <601.934812420@sss.pgh.pa.us>
- Reply-To: cygwin@sourceware.cygnus.com
On Mon, Aug 16, 1999 at 10:07:00AM -0400, Tom Lane wrote:
>Is it possible that the CygWin environment doesn't have a correct
>emulation of IPC semaphores, such that a sema allocated by one process
>(the postmaster) is not available to other procs (the backends)?
>That would explain preallocation not working --- but if that's it then
>we have major problems in other places, since the code assumes that a
>sema once allocated will remain available to later backends.
We don't have correct emulation of IPC semapahores since they are not
implemented at all. I assume that if you're relying on persistent
semaphores, then some add-on package is being used.
cgf
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