| From: | Chris Faylor <cgf(at)cygnus(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Horak Daniel <horak(at)mmp(dot)plzen-city(dot)cz>, "'pgsql-hackers(at)postgreSQL(dot)org'" <pgsql-hackers(at)postgreSQL(dot)org>, "'cygwin(at)sourceware(dot)cygnus(dot)com'" <cygwin(at)sourceware(dot)cygnus(dot)com>, "'Joost Kraaijeveld'" <JKraaijeveld(at)askesis(dot)nl> |
| Subject: | Re: [HACKERS] backend freezeing on win32 fixed (I hope ;-) ) |
| Date: | 1999-08-16 17:09:49 |
| Message-ID: | 19990816130949.A1087@cygnus.com |
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| Lists: | pgsql-hackers |
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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