From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
---|---|
To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
Cc: | PostgreSQL-patches <pgsql-patches(at)postgresql(dot)org> |
Subject: | Re: MemSet inline for newNode |
Date: | 2002-11-11 16:23:44 |
Message-ID: | 2301.1037031824@sss.pgh.pa.us |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-hackers pgsql-patches |
Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> I still test the palloc pointer alignment in MemSetLoop because that is
> not a constant.
But it's known aligned when you just got it from palloc.
Why don't you simply implement what was agreed to in the original
thread, namely:
* provide a MemSetAligned macro that is just like the standard
one except it omits the pointer alignment test
* provide a palloc0 macro that does MemSetAligned inside the
macro; known safe because palloc returns a maxaligned pointer
* use palloc0 in the newNode macro
The approach you are taking is messier *and* slower than this.
regards, tom lane
From | Date | Subject | |
---|---|---|---|
Next Message | Bruce Momjian | 2002-11-11 16:40:02 | Re: MemSet inline for newNode |
Previous Message | Bruce Momjian | 2002-11-11 16:06:40 | Re: MemSet inline for newNode |
From | Date | Subject | |
---|---|---|---|
Next Message | Bruce Momjian | 2002-11-11 16:40:02 | Re: MemSet inline for newNode |
Previous Message | Bruce Momjian | 2002-11-11 16:06:40 | Re: MemSet inline for newNode |