/**
* Perform any necessary shutdown tasks.
* This should only be invoked as a register_shutdown callback.
*
* @access private
*/
function _shutdown()
{
if (isset($this->_lockSystem)) {
/* Bitch about open locks */
$lockIds = $this->_lockSystem->getLockIds();
foreach ($lockIds as $lockId) {
if ($this->getDebug()) {
$this->debug(sprintf('Lock id %d was left hanging!', $lockId));
}
}
/* Release all locks and ignore any errors */
$this->_lockSystem->releaseAllLocks();
$this->_lockSystem->releaseQueue();
}
/* Roll back any transactions */
if (isset($this->_storage)) {
$this->_storage->rollbackTransaction();
}
}
/**
* Guarantee that we have at least this many more seconds to work
*
* After this function completes, we will be guaranteed of at least this much more time to work.
*
* @param int $limit a time interval in seconds, must be greater than 0
*/
function guaranteeTimeLimit($limit)
{
if ($limit <= 0) {
$limit = 30;
}
$now = time();
if (empty($this->_timeLimit) || $this->_timeLimit - $now < $limit) {
$this->debug("[{$now}] can't guarantee {$limit} -- extending!");
/* Make sure that we extend at least a minimum of 30 seconds */
$this->_timeLimit = $now + max($limit, 30);
set_time_limit($this->_timeLimit - $now);
/*
* Then make sure our locks stick around. Even though this returns a status code, we
* really don't want to make guaranteeTimeLimit() return a status code since we want to
* keep it lightweight. So swallow the return code and don't sweat it for now.
*/
if (isset($this->_lockSystem)) {
$this->_lockSystem->refreshLocks($this->_timeLimit);
}
}
}
