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Re: Faster StrNCpy

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Markus Schaber <schabi(at)logix-tt(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Faster StrNCpy
Date: 2006-09-29 14:59:22
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackerspgsql-patches
Markus Schaber <schabi(at)logix-tt(dot)com> writes:
> There's another disadvantage of always copying 64 bytes:
> It may be that the 64-byte range crosses a page boundary. Now guess what
> happens when this next page is not mapped -> segfault.

Irrelevant, because in all interesting cases the Name field is part of a
larger record that would stretch into that other page anyway.

			regards, tom lane

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