preserving state across external functions calls

From: "Maksim Likharev" <mlikharev(at)aurigin(dot)com>
To: <pgsql-interfaces(at)postgresql(dot)org>
Subject: preserving state across external functions calls
Date: 2003-05-22 19:22:09
Message-ID: 56510AAEF435D240958D1CE8C6B1770A014A0BD6@mailc03.aurigin.com
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Hi,
I have a question about a correct way of preserving state/some
information across pg functions call
Let's imagine following example:

External C functions:

FUNCTION_INIT_SOMETHING - allocates a memory, returns some kind of
handle
FUNCTION_DO_SOMETHING - use allocated memory
FUNCTION_FREE_SOMETHING - deallocate using handle

and of cause general idea automatic deallocation at the and of session
scope
Thank you.

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