| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov> |
| Cc: | Simon Riggs <simon(at)2ndquadrant(dot)com>, Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Subject: | Re: FlexLocks |
| Date: | 2011-11-16 20:17:06 |
| Message-ID: | CA+Tgmoax_14rbx8Y6mmgvW64gCQL4ZviDzwEObXEMuiV=TwmxQ@mail.gmail.com |
| Views: | Whole Thread | Raw Message | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Wed, Nov 16, 2011 at 12:25 PM, Kevin Grittner
<Kevin(dot)Grittner(at)wicourts(dot)gov> wrote:
>> We could alternatively change one or the other of them to be a
>> struct with one member, but I think the cure might be worse than
>> the disease. By my count, we are talking about saving perhaps as
>> many as 34 lines of code changes here, and that's only if
>> complicating the type handling doesn't require any changes to
>> places that are untouched at present, which I suspect it would.
>
> So I stepped through all the changes of this type, and I notice that
> most of them are in areas where we've talked about likely benefits
> of creating new FlexLock variants instead of staying with LWLocks;
> if any of that is done (as seems likely), it further reduces the
> impact from 34 lines. If we take care of LWLockHeldByMe() as you
> describe, I'll concede the FlexLockId changes.
Updated patches attached.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
| Attachment | Content-Type | Size |
|---|---|---|
| flexlock-v2.patch | application/octet-stream | 70.3 KB |
| procarraylock-v1.patch | application/octet-stream | 33.5 KB |
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Robert Haas | 2011-11-16 20:42:07 | Re: Minor optimisation of XLogInsert() |
| Previous Message | Kevin Grittner | 2011-11-16 20:06:11 | Re: Patch to allow users to kill their own queries |