On 1/3/22 16:54, Stanislav Bashkyrtsev wrote:
I tried debugging PostgreSQL to better understand how it works. It
worked fine a day ago, but for some reason I have issues with debugging now:
- If I put a breakpoint before I start the process then everything works
fine
- But if I put/remove a breakpoint after it's fully initialized - the
process just stops
And when reading the next command postgres.c, I see that
input_message is empty. I assume CLion sends a signal which awakens
PostgreSQL, but there's no data on the input? But should PostgreSQL quit
in such a situation?
Why do you think postgres quits? AFAIK CLion uses gdb or lldb for
debugging, which are the debugger of choice for many (most?) hackers on
this list. So that should work fine.
The way I build and start:
make clean
./configure --enable-cassert --enable-debug CFLAGS="-ggdb -O0 -g3
-fno-omit-frame-pointer"
make
make install
/usr/local/pgsql/bin/initdb -D /Users/stas/projects/postgres/data
Starting command:
/usr/local/pgsql/bin/postgres --single -D
/Users/stas/projects/postgres/data postgres
Now sure why you start it in single-user mode, but I don't think that
should affect debugging. Try redirecting the output to a log file, maybe
that'll tell you what happened.
regards
--
Tomas Vondra
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
