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Re: [Beginner Question]Is there way to test the postgres's kernel function? - Mailing list pgsql-general

From David G. Johnston
Subject Re: [Beginner Question]Is there way to test the postgres's kernel function?
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Msg-id CAKFQuwYgNWFacVuq9NV_Hzss9Y=97FRn74AyqqBA1cWdvXRZvA@mail.gmail.com
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In response to [Beginner Question]Is there way to test the postgres's kernel function?  ("Wen Yi" <wen-yi@qq.com>)
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On Mon, Jul 24, 2023 at 2:43 AM Wen Yi <wen-yi@qq.com> wrote:
Hi community,
I am learning the kernel of the postgres, and I want to test the make_relative_path function to know what it's operational principle.(I can read it's code, and I want to actually run it)
But I really don't know how to do it, wrtite a extension?

Can someone give me some advice?


A formal extension seems like overkill.  PostgreSQL provides an ability to write customer user-space functions in C.  You ought to be able to leverage that for this specific task.

https://www.postgresql.org/docs/current/xfunc-c.html

David J.

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