| From: | Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com> |
|---|---|
| To: | Peter Geoghegan <pg(at)bowt(dot)ie> |
| Cc: | Rafia Sabih <rafia(dot)sabih(at)enterprisedb(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Ashutosh Bapat <ashutosh(dot)bapat(at)enterprisedb(dot)com>, Haribabu Kommi <kommi(dot)haribabu(at)gmail(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>, Robert Haas <robertmhaas(at)gmail(dot)com> |
| Subject: | Re: WIP: [[Parallel] Shared] Hash |
| Date: | 2017-03-27 06:50:00 |
| Message-ID: | CAEepm=1w1Niz_h+JVV7dDCAY1s6RDpQXUqAAeTOjXXUkG1XzsA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Sun, Mar 26, 2017 at 3:56 PM, Thomas Munro
<thomas(dot)munro(at)enterprisedb(dot)com> wrote:
> But... what you said above must be a problem for Windows. I believe
> it doesn't allow files to be unlinked if they are open, and I see that
> DSM segments are cleaned up in resowner's phase ==
> RESOURCE_RELEASE_BEFORE_LOCKS and files are closed in phase ==
> RESOURCE_RELEASE_AFTER_LOCKS.
I thought this last point about Windows might be fatal to my design,
but it seems that Windows since at least version 2000 has support for
Unixoid unlinkability via the special flag FILE_SHARE_DELETE.
--
Thomas Munro
http://www.enterprisedb.com
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