Function CheckLogrotateSignal

src/backend/postmaster/syslogger.c:2255–2264

* Check to see if a log rotation request has arrived. Should be * called by postmaster after receiving SIGUSR1. */

 * called by postmaster after receiving SIGUSR1.
 */
bool
CheckLogrotateSignal(void)
{
	struct stat stat_buf;

	if (stat(LOGROTATE_SIGNAL_FILE, &stat_buf) == 0)
		return true;

	return false;
}

/*
 * Remove the file signaling a log rotation request.