Re: SKIP LOCKED DATA (work in progress)

On 26 July 2014 15:43, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Thomas Munro <munro(at)ip9(dot)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