Re: SKIP LOCKED DATA (work in progress) - Mailing list pgsql-hackers

From Thomas Munro
Subject Re: SKIP LOCKED DATA (work in progress)
Date
Msg-id CADLWmXVSE5_R45KegC=OFvNG+34oAuTxn02eVw17iFCcfdqfyQ@mail.gmail.com
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In response to Re: SKIP LOCKED DATA (work in progress)  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: SKIP LOCKED DATA (work in progress)  (David Rowley <dgrowleyml@gmail.com>)
List pgsql-hackers
On 26 July 2014 15:43, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Thomas Munro <munro@ip9.org> writes:
>> I couldn't find an existing reasonable place to share a single wait
>> policy enumeration between parser/planner/executor and the heap access
>> module, and I get the feeling that it would be unacceptable to
>> introduce one.
>
> There is a precedent in the form of AclMode, which is needed throughout
> the system and is currently declared in parsenodes.h.  I can't say I've
> ever been particularly pleased with that arrangement though, since it
> forces inclusion of parsenodes.h in many places that might not otherwise
> have any interest in parse nodes.
>
> It might be better if we'd declared AclMode in a single-purpose header,
> say utils/aclmode.h, and then #include'd that into parsenodes.h.
> There's certainly plenty of other single-datatype headers laying about.

Here is a new version of the patch with a single enum LockWaitPolicy
defined in utils/lockwaitpolicy.h.

Best regards,
Thomas Munro

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