Re: libpq is not thread safe

Zdenek Kotala <Zdenek(dot)Kotala(at)Sun(dot)COM> writes:
> When postgreSQL is compiled with --thread-safe that libpq should be
> thread safe. But it is not true when somebody call fork(). The problem
> is that fork() forks only active threads and some mutex can stay locked
> by another thread. We use ssl_config mutex which is global.

fork() without exec() when there are open libpq connections is
unbelievably dangerous anyway --- you will have multiple processes
that all think they own the same database connection. I think writing
code to deal with this for the ssl_config mutex is entirely a waste
of time.

regards, tom lane