/**
* Clean the cache and release lock
*
* If building the cache for classes failed, we don't know in which state we are. So we need to clear the cache
* completely and remove the lock which should exist.
* If the PHP process receives either the SIGTERM or SIGKILL signal, this function will NOT be called.
* It might still be called on a SIGSEGV signal though, but we can't trust the members of this class then,
* hence, the contents of $this->* might be nonsense and its usage might lead to undesired behavior.
*
* This function needs to be public, so it can be called as shutdown-function, but this function may be changed,
* renamed or deleted without deprecation, also in bugfix-releases.
*
* @return void
* @internal
*/
public function checkForCrashAndCleanup()
{
// As we are used as shutdownFunction we need to test if we get called while the lock is set.
// If this is the case, the cache creation has crashed.
$error = error_get_last();
// $this->lockObject can be null in installer context without typo3temp, but then this method shouldn't
// be registered as shutdown-function due to caching being disabled in this case.
// See @getLocker for more information.
if ($error !== NULL && $this->lockObject !== NULL && $this->lockObject->getLockStatus()) {
$this->clearClassesCache();
$this->releaseLock(TRUE);
}
}
/**
* Does some processing BEFORE the pagegen script is included.
*
* @return void
* @todo Define visibility
*/
public function generatePage_preProcessing()
{
// Same codeline as in getFromCache(). But $this->all has been changed by t3lib_TStemplate::start() in the meantime, so this must be called again!
$this->newHash = $this->getHash();
// For cache management informational purposes.
$this->config['hash_base'] = $this->hash_base;
if (!is_object($this->pages_lockObj) || $this->pages_lockObj->getLockStatus() == FALSE) {
// Here we put some temporary stuff in the cache in order to let the first hit generate the page. The temporary cache will expire after a few seconds (typ. 30) or will be cleared by the rendered page, which will also clear and rewrite the cache.
$this->tempPageCacheContent();
}
// Setting cache_timeout_default. May be overridden by PHP include scritps.
$this->cacheTimeOutDefault = intval($this->config['config']['cache_period']);
// Page is generated
$this->no_cacheBeforePageGen = $this->no_cache;
}
