| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Portability issues in shm_mq |
| Date: | 2014-03-18 02:49:55 |
| Message-ID: | CA+TgmoaW=RSPM-dpj_m7PtvCZiQUkkq9huvzw31MM4h061HP1Q@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Mon, Mar 17, 2014 at 1:26 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
> Oh, yeah. Duh. Clearly my brain isn't working today. Hmm, so maybe
> this will be fairly simple... will try it out.
OK, I tried this out. The major complication that cropped up was
that, if we make the length word always a Size but align the buffer to
MAXIMUM_ALIGNOF, then the length word might get split if sizeof(Size)
> MAXIMUM_ALIGNOF. That doesn't look too bad, but required changing a
couple of if statements into while loops, and changing around the
structure of a shm_mq_handle a bit. See attached.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
| Attachment | Content-Type | Size |
|---|---|---|
| shm-mq-size.patch | text/x-patch | 17.4 KB |
| From | Date | Subject | |
|---|---|---|---|
| Next Message | David Johnston | 2014-03-18 02:52:26 | Re: Minimum supported version of Python? |
| Previous Message | Joshua D. Drake | 2014-03-18 02:47:30 | Re: Minimum supported version of Python? |