How do I reload Postgres.app config without restarting?

Question

With a regular postgres install, I would do this either by sending SIGHUP to the postgres process, or by running pg_ctl reload. With Postgres.app, however, I'm unsure about where to send SIGHUP (to the Postgres.app process, or one of the workers?), and attempting to run pg_ctl reload (after tracking it down to /Applications/Postgres.app/Contents/Versions/9.3/bin yields only complaints about PG_DATA being unset.

So, how do I reload the configuration files for Postgres.app without restarting the whole server? Is this possible?

Answer 1

Simplest way: SELECT pg_reload_conf().