Date: Tue, 3 Oct 2017 10:15:03 -0700 (MST)
From: athinivas <athinivas@gmail.com>
To: pgsql-sql@postgresql.org
Message-ID: <1507050903928-0.post@n3.nabble.com>
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 <CAKFQuwbg1efML7CeSTrg8WZ_qOQfmVCYbVWdUXvmbWAsjnmADw@mail.gmail.com>
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 <CAKFQuwbg1efML7CeSTrg8WZ_qOQfmVCYbVWdUXvmbWAsjnmADw@mail.gmail.com>
Subject: Re: Static variable inside PL/pgSQL (or) native C function
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David G Johnston wrote
> On Fri, Sep 29, 2017 at 6:46 AM, athinivas &lt;

> athinivas@

> &gt; wrote:
>=20
>> Hi,
>>
>> Is it possible to have static variable inside pgSQL C functions (or)
>> PL/pgSQL?? I'm having a use case where I need to update a counter inside
>> the
>> function & it should be thread-safe.
>>
>> I've tried using static variable inside the C function along with
>> pthread_mutex_lock/pthread_mutex_unlock. And found functions are not
>> shared
>> among each other.
>>
>>
> Don't know what's possible in C; pretty sure no in pl/pgsql.
>=20
> Why not just use a table and SQL locking features?
>=20
> Dave=E2=80=8B

Sadly, I'm doing it in slave server, so not able to use any table
INSERT/UPDATE. Does current_Setting() can be used to access any global
variables??

thanks,=20
Athi


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