Re: debugging tools inside postgres

On Fri, Jun 24, 2011 at 02:35:08PM +0800, HuangQi wrote:
> Hi,
> I'm trying to debug a modification for the query planner. But I found it
> seems the data structure of my planned query is incorrect. I was trying to
> print out the data structure by use the "p" command in gdb which is quite
> inconvenient and takes time. May I know is there any embedded function in
> postgres to print out the node data structures, or any other plan related
> data structures? Thanks.

I don't know if anyone has done it, but recent versions of gdb
apparenly can use python scripts, and use them to dump c++ library
structures in readable formats. I guess someone could write some
script to make debugging postgresql nicer (pretty printing snapshots,
locks, etc).

Have a nice day,
--
Martijn van Oosterhout <kleptog(at)svana(dot)org> http://svana.org/kleptog/
> Patriotism is when love of your own people comes first; nationalism,
> when hate for people other than your own comes first.
> - Charles de Gaulle