diff options
Diffstat (limited to 'engine/lib')
| -rw-r--r-- | engine/lib/upgrade.php | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/engine/lib/upgrade.php b/engine/lib/upgrade.php index 7f55c4cba..f4f4b16f5 100644 --- a/engine/lib/upgrade.php +++ b/engine/lib/upgrade.php @@ -313,7 +313,9 @@ function elgg_upgrade_bootstrap_17_to_18() { } /** - * Locks a mutual execution of upgrade + * Creates a table {prefix}upgrade_lock that is used as a mutex for upgrades. + * + * @see _elgg_upgrade_lock() * * @return bool * @access private @@ -323,24 +325,26 @@ function _elgg_upgrade_lock() { if (!_elgg_upgrade_is_locked()) { // lock it - insert_data("create table {$CONFIG->dbprefix}locked (id INT)"); - error_log('Upgrade continue running'); + insert_data("create table {$CONFIG->dbprefix}upgrade_lock (id INT)"); + elgg_log('Locked for upgrade.', 'NOTICE'); return true; } - error_log('Upgrade is locked'); + elgg_log('Cannot lock for upgrade: already locked.', 'WARNING'); return false; } /** - * Unlocks upgrade for new upgrade executions + * Unlocks upgrade. + * + * @see _elgg_upgrade_lock() * * @access private */ function _elgg_upgrade_unlock() { global $CONFIG; - delete_data("drop table {$CONFIG->dbprefix}locked"); - error_log('Upgrade unlocks itself'); + delete_data("drop table {$CONFIG->dbprefix}upgrade_lock"); + elgg_log('Upgrade unlocked.', 'NOTICE'); } /** @@ -352,7 +356,7 @@ function _elgg_upgrade_unlock() { function _elgg_upgrade_is_locked() { global $CONFIG, $DB_QUERY_CACHE; - $is_locked = count(get_data("show tables like '{$CONFIG->dbprefix}locked'")); + $is_locked = count(get_data("show tables like '{$CONFIG->dbprefix}upgrade_lock'")); // Invalidate query cache if ($DB_QUERY_CACHE) { |