From: David G. Johnston <david.g.johnston@gmail.com>
To: athinivas <athinivas@gmail.com>
Cc: pgsql-sql@postgresql.org <pgsql-sql@postgresql.org>
Subject: Re: Static variable inside PL/pgSQL (or) native C function
Date: Fri, 29 Sep 2017 07:04:15 -0700
Message-ID: <CAKFQuwbg1efML7CeSTrg8WZ_qOQfmVCYbVWdUXvmbWAsjnmADw@mail.gmail.com> (raw)
In-Reply-To: <1506692779631-0.post@n3.nabble.com>
References: <1506692779631-0.post@n3.nabble.com>
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On Fri, Sep 29, 2017 at 6:46 AM, athinivas <athinivas@gmail.com> wrote:
> 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.
Why not just use a table and SQL locking features?
Dave
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To: pgsql-sql@postgresql.org
Cc: david.g.johnston@gmail.com, athinivas@gmail.com
Subject: Re: Static variable inside PL/pgSQL (or) native C function
In-Reply-To: <CAKFQuwbg1efML7CeSTrg8WZ_qOQfmVCYbVWdUXvmbWAsjnmADw@mail.gmail.com>
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