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Re: LOCK.tag(figuring out granularity of lock) - Mailing list pgsql-hackers

From Tom Lane
Subject Re: LOCK.tag(figuring out granularity of lock)
Date
Msg-id 12104.1060301946@sss.pgh.pa.us
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In response to LOCK.tag(figuring out granularity of lock)  ("Jenny -" <nat_lazy@hotmail.com>)
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"Jenny -" <nat_lazy@hotmail.com> writes:
> how do we check whether blockId and tupleId of LOCK.tag are valid or 
> invalid?

Look at how LockRelation and LockPage (in
src/backend/storage/lmgr/lmgr.c) set up the tags --- it might be clearer
then.
        regards, tom lane

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