hi, all I already can debug general postgres using "ddd" and "select pg_backend_pid();" , now, I want to study the details of the system catalog cache and system cache management, so I need to debug the function InitPostgres() and InitCatalogCache(), and I tried the following steps:
[refer: How to debug postgresql during initdb ] <http://www.phacai.com/how-to-debug-postgresql-during-initdb> (1) in first terminal: ddd initdb and set a breakpoint on the next executable line after “PG_CMD_OPEN” in function bootstrap_template1() , Then within gdb, use “r $myfolder/mydb”, and found the cursor stop at the breakpoint (2) in the second terminal: ps aux | grep "bin\/postgres" after get the posgtres server pid, start a new ddd without args, and within gdb, using "attach postgres.pid" and set a breakpoint as InitCatalogCache() (3) back to the first ddd window, hit the "cont" button. I hope it can stop at the second ddd's breakpoint, but nothing happened? I must make mistake in some step, or my understanding is fully wrong, please give me some advice, thanks a lot! Dillon
