From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
---|---|
To: | Dilip Kumar <dilipbalaut(at)gmail(dot)com> |
Cc: | Andres Freund <andres(at)anarazel(dot)de>, Haribabu Kommi <kommi(dot)haribabu(at)gmail(dot)com>, Rafia Sabih <rafia(dot)sabih(at)enterprisedb(dot)com>, tushar <tushar(dot)ahuja(at)enterprisedb(dot)com>, Amit Khandekar <amitdkhan(dot)pg(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Parallel bitmap heap scan |
Date: | 2017-02-08 13:25:34 |
Message-ID: | CA+TgmoZw8=oo+AXuzSt4J+P8O7NuCqR7-6BkwzcXaG7BbuDfhA@mail.gmail.com |
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Lists: | pgsql-hackers |
On Wed, Feb 8, 2017 at 5:21 AM, Dilip Kumar <dilipbalaut(at)gmail(dot)com> wrote:
> On Wed, Feb 8, 2017 at 3:44 AM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>>>> +#ifndef SH_USE_NONDEFAULT_ALLOCATOR
>>>> +
>>>
>>> That should probably be documented in the file header.
>>
>> Right. OK, did that and a few other cleanups, and committed.
>
> I think we need to have prototype for the default allocator outside of
> #ifndef SH_USE_NONDEFAULT_ALLOCATOR. Because the file e.g. tidbitmap.c
> who wants to use SH_USE_NONDEFAULT_ALLOCATOR will provide the
> allocator function definition but it can not have the declaration of
> those function as that function take SH_TYPE as input and that will be
> only defined once we include the simplehash.h.
>
> So basically we can not declare prototype before including
> simplehash.h for allocator. And, if we don't declare we will get
> "implicit declaration warning" because simplehash itself is using
> those functions.
>
> The solution is simplehash.h, should always declare it, and provide
> the definitions only if SH_USE_NONDEFAULT_ALLOCATOR is not defined.
> Attached patch does that.
Makes sense, will commit.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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