Re: [HACKERS] pageinspect: Hash index support

Hi,

On 02/03/2017 11:36 AM, Robert Haas wrote:
> On Fri, Feb 3, 2017 at 10:11 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> BTW, the buildfarm is still crashing on ia64 and sparc64 members.
>> I believe this is the same problem addressed in 84ad68d64 for
>> pageinspect's GIN functions, to wit, the payload of a "bytea"
>> is not maxaligned, so machines that care about alignment won't be
>> happy when trying to fetch 64-bit values out of a bytea page image.
>>
>> Clearly, the fix should be to start using the get_page_from_raw()
>> function that Peter introduced in that patch.  But it's static in
>> ginfuncs.c, which I thought was a mistake at the time, and it's
>> proven so now.
>>
>> contrib/pageinspect actually seems to lack *any* infrastructure
>> for sharing functions across modules.  It's time to remedy that.
>> I propose inventing "pageinspect.h" to hold commonly visible
>> declarations, and moving get_page_from_raw() into rawpage.c,
>> which seems like a reasonably natural home for it.  (Alternatively,
>> we could invent a pageinspect.c file to hold utility functions,
>> but that might be overkill.)
>
> No objections.
>

Attached is v1 of this w/ verify_hash_page() using get_page_from_raw().

Sorry for all the problems.

Best regards,
  Jesper


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