From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
---|---|
To: | Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp> |
Cc: | "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: an outdated comment for hash_seq_init. |
Date: | 2017-04-25 15:00:16 |
Message-ID: | CA+TgmobU=F1JtGZ+bL91D7sE2+cBybmJ+WMQdmTT0cyV2dvO0Q@mail.gmail.com |
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On Mon, Apr 24, 2017 at 3:55 AM, Kyotaro HORIGUCHI
<horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp> wrote:
> While I looked into dynahash.c, I found that the following
> sentense became outdated by 5dfc198. The commit removed the only
> usage of hash_freeze().
>
>> * NOTE: it is possible to use hash_seq_init/hash_seq_search without any
>> * worry about hash_seq_term cleanup, if the hashtable is first locked against
>> * further insertions by calling hash_freeze. This is used by nodeAgg.c,
>> * wherein it is inconvenient to track whether a scan is still open, and
>> * there's no possibility of further insertions after readout has begun.
>
> The attached patch removes the sentence begins with "This is used
> by..".
Committed.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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