/**
* Gets APC instance if exists, otherwise creates a new instance.
*
* @return APC cache instance.
*/
public static function getInstance()
{
if (self::$instance === NULL) {
self::$instance = new self();
}
return self::$instance;
}
/**
* singleton function to return
* the instance of the class
*
* @return APCCache or NoCache
*/
public static function singleton()
{
if (!Cache::$enabled) {
return NoCache::singleton();
}
if (!self::$instance) {
self::$instance = new APCCache();
}
return self::$instance;
}
public static function init()
{
#-------------------------------------------------------------------------------
if (self::$instance === NULL) {
#-------------------------------------------------------------------------------
try {
#-------------------------------------------------------------------------------
Debug("[system/classes/auto/CacheManager.class.php]: Start initializing cache system.");
#-------------------------------------------------------------------------------
if (Extension_Loaded(MemcachedCache::EXT_NAME) && File_Exists(SPrintF('%s/.memcached', SYSTEM_PATH))) {
#-------------------------------------------------------------------------------
Debug('[system/classes/auto/CacheManager.class.php]: Force load MemcachedCache');
#-------------------------------------------------------------------------------
self::$instance = MemcachedCache::getInstance();
#-------------------------------------------------------------------------------
} else {
if (Extension_Loaded(APCCache::EXT_NAME)) {
#-------------------------------------------------------------------------------
Debug('[system/classes/auto/CacheManager.class.php]: Load APCCache');
#-------------------------------------------------------------------------------
self::$instance = APCCache::getInstance();
#-------------------------------------------------------------------------------
} else {
if (Extension_Loaded(MemcachedCache::EXT_NAME)) {
#-------------------------------------------------------------------------------
Debug('[system/classes/auto/CacheManager.class.php]: Load MemcachedCache');
#-------------------------------------------------------------------------------
self::$instance = MemcachedCache::getInstance();
#-------------------------------------------------------------------------------
} else {
#-------------------------------------------------------------------------------
throw new Exception("Any supported cache not installed in your sysytem.");
}
}
}
#-------------------------------------------------------------------------------
Debug("Cache system has been initialized.");
#-------------------------------------------------------------------------------
} catch (Exception $e) {
#-------------------------------------------------------------------------------
Debug("Cache system has not been installed: " . $e->getTraceAsString());
#-------------------------------------------------------------------------------
}
#-------------------------------------------------------------------------------
#-------------------------------------------------------------------------------
}
#-------------------------------------------------------------------------------
return self::$instance;
#-------------------------------------------------------------------------------
}
