/**
 * Indicates upgrade is finished.
 *
 * This function may be called repeatedly.
 *
 * @global object
 * @global object
 */
function upgrade_finished($continueurl=null) {
    global $CFG, $DB, $OUTPUT;

    if (!empty($CFG->upgraderunning)) {
        unset_config('upgraderunning');
        upgrade_setup_debug(false);
        ignore_user_abort(false);
        if ($continueurl) {
            echo $OUTPUT->continue_button($continueurl);
            echo $OUTPUT->footer();
            die;
        }
    }
}

/**
 * Indicates upgrade is finished.
 *
 * This function may be called repeatedly.
 *
 * @global object
 * @global object
 */
function upgrade_finished($continueurl=null) {
    global $CFG, $DB, $OUTPUT;

    if (!empty($CFG->upgraderunning)) {
        unset_config('upgraderunning');
        // We have to forcefully purge the caches using the writer here.
        // This has to be done after we unset the config var. If someone hits the site while this is set they will
        // cause the config values to propogate to the caches.
        // Caches are purged after the last step in an upgrade but there is several code routines that exceute between
        // then and now that leaving a window for things to fall out of sync.
        cache_helper::purge_all(true);
        upgrade_setup_debug(false);
        ignore_user_abort(false);
        if ($continueurl) {
            echo $OUTPUT->continue_button($continueurl);
            echo $OUTPUT->footer();
            die;
        }
    }
}

/**
 * Indicates upgrade is finished.
 *
 * This function may be called repeatedly.
 */
function upgrade_finished($continueurl = null)
{
    global $CFG, $DB;
    if (!empty($CFG->upgraderunning)) {
        unset_config('upgraderunning');
        upgrade_setup_debug(false);
        ignore_user_abort(false);
        if ($continueurl) {
            print_continue($continueurl);
            print_footer('upgrade');
            die;
        }
    }
}