To connect a debbuger...

From: Jonathan Scher <js(at)oxado(dot)com>
To: pgsql-hackers(at)postgresql(dot)org
Subject: To connect a debbuger...
Date: 2007-03-12 18:33:00
Message-ID: 45F59CDC.5060002@oxado.com
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Hello!

I'm trying to add some features to PostgreSQL, but I just can't figure
out how to make gdb work with it.

I attach gdb to /usr/.../bin/postgres, then I put a breakpoint. Whenever
postgres stop on that breakpoint, it just kills/restarts the server
instead of asking me what to do.

It's surely a noob's question but how can I use a debugger with PostegreSQL?

Regards,
Jonathan Scher

(gdb) file /usr/local/pgsql/bin/postgres
Reading symbols from /usr/local/pgsql/bin/postgres...(no debugging
symbols found)...done.
(gdb) set args -D /home/heziva/pgsql/pgsql_data/
(gdb) b transformFromClause
Breakpoint 1 at 0x80e371e
(gdb) r
Starting program: /usr/local/pgsql/bin/postgres -D
/home/heziva/pgsql/pgsql_data/
(no debugging symbols found)...(no debugging symbols found)...(no
debugging symbols found)...(no debugging symbols found)...LOG: database
system was interrupted; last known up at 2007-03-12 18:04:04 UTC
LOG: checkpoint record is at 0/481504
LOG: redo record is at 0/481504; shutdown TRUE
LOG: next transaction ID: 0/710; next OID: 16392
LOG: next MultiXactId: 1; next MultiXactOffset: 0
LOG: database system was not properly shut down; automatic recovery in
progress
LOG: record with zero length at 0/481544
LOG: redo is not required
LOG: database system is ready to accept connections
LOG: autovacuum launcher started

=====> on another shell.... psql....\d

(gdb) file /usr/local/pgsql/bin/postgres
Reading symbols from /usr/local/pgsql/bin/postgres...(no debugging
symbols found)...done.
(gdb) set args -D /home/heziva/pgsql/pgsql_data/
(gdb) b transformFromClause
Breakpoint 1 at 0x80e371e
(gdb) r
Starting program: /usr/local/pgsql/bin/postgres -D
/home/heziva/pgsql/pgsql_data/
(no debugging symbols found)...(no debugging symbols found)...(no
debugging symbols found)...(no debugging symbols found)...LOG: database
system was interrupted; last known up at 2007-03-12 18:04:04 UTC
LOG: checkpoint record is at 0/481504
LOG: redo record is at 0/481504; shutdown TRUE
LOG: next transaction ID: 0/710; next OID: 16392
LOG: next MultiXactId: 1; next MultiXactOffset: 0
LOG: database system was not properly shut down; automatic recovery in
progress
LOG: record with zero length at 0/481544
LOG: redo is not required
LOG: database system is ready to accept connections
LOG: autovacuum launcher started

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