Method registerConn

server/server.go:745–749

registerConn adds a client connection to the registry for pg_stat_activity.

(c *clientConn)

	s.activeQueriesMu.Lock()
	// Lazily initialized: production servers get the map from New, but test
	// fixtures (and InitMinimalServer paths) may construct a bare Server.
	if s.activeQueries == nil {
		s.activeQueries = make(map[BackendKey]context.CancelFunc)
	}
	s.activeQueries[key] = cancel
	s.activeQueriesMu.Unlock()
}