Function enable_statement_timeout

src/backend/tcop/postgres.c:6412–6429

* Start statement timeout timer, if enabled. * * If there's already a timeout running, don't restart the timer. That * enables compromises between accuracy of timeouts and cost of starting a * timeout. */

 * timeout.
 */
static void
enable_statement_timeout(void)
{
	/* must be within an xact */
	Assert(xact_started);

	/* always disable statement timeout in QE */
	if (StatementTimeout > 0 && Gp_role != GP_ROLE_EXECUTE)
	{
		if (!get_timeout_active(STATEMENT_TIMEOUT))
			enable_timeout_after(STATEMENT_TIMEOUT, StatementTimeout);
	}
	else
	{
		if (get_timeout_active(STATEMENT_TIMEOUT))
			disable_timeout(STATEMENT_TIMEOUT, false);
	}
}

/*
 * Disable statement timeout, if active.