debugging with gdb in postgres

Question

Following on from my previous post on this topic, I am trying to learn how postgresql implements the join algorithms.

So I am trying to learn about the source code of the executor precisely the file nodenestloop.c .

In the executor file I have nodenestloop.o but no binary executor file.

I am using helios eclipse to edit the source code.

I want to use gdb for debugging that file, but for that gdb needs a executor file.

I want to Debug that file using gdb and attach the postgress process file.

Could anyone help me with how to debug that file using gdb and attach a process, I know that we can find out about the pid of the process by using this command in psql, select pg_backend_pid , but how exactly are we going to give this pid to gdb.

any help or related links wwould be grateful.

Thank you

Community · Accepted Answer · 2017-05-23 12:05:44Z

1

You appear to be asking how to attach to an existing process in Eclipse. This isn't really about PostgreSQL.

See this existing answer:

Is it possible to attach a debugging session to a running program in eclipse CDT

Eclipse has an "attach to application" option. Use that.

edited May 23, 2017 at 12:05

CommunityBot

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answered Jul 8, 2014 at 23:59

Craig Ringer

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