class.ilApc.php

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<?php

require_once('./Services/GlobalCache/classes/class.ilGlobalCacheService.php');
require_once('./Services/Environment/classes/class.ilRuntime.php');

class ilApc extends ilGlobalCacheService {

        const MIN_MEMORY = 128;
        const CACHE_ID = 'user';


        public function exists($key) {
                if (function_exists('apc_exists')) {
                        return apc_exists($this->returnKey($key));
                } else {
                        return apc_fetch($this->returnKey($key)) !== NULL;
                }
        }


        public function set($key, $serialized_value, $ttl = 0) {
                return apc_store($this->returnKey($key), $serialized_value, $ttl);
        }


        public function get($key) {
                return apc_fetch($this->returnKey($key));
        }


        public function delete($key) {
                return apc_delete($this->returnKey($key));
        }


        public function flush() {
                return apc_clear_cache(self::CACHE_ID);
        }


        public function serialize($value) {
                return ($value);
        }


        public function unserialize($serialized_value) {
                return ($serialized_value);
        }


        public function getInfo() {
                $return = array();

                $cache_info = apc_cache_info();

                unset($cache_info['cache_list']);
                unset($cache_info['slot_distribution']);

                $return['__cache_info'] = array(
                        'apc.enabled' => ini_get('apc.enabled'),
                        'apc.shm_size' => ini_get('apc.shm_size'),
                        'apc.shm_segments' => ini_get('apc.shm_segments'),
                        'apc.gc_ttl' => ini_get('apc.gc_ttl'),
                        'apc.user_ttl' => ini_get('apc.ttl'),
                        'info' => $cache_info
                );

                $cache_info = apc_cache_info();
                foreach ($cache_info['cache_list'] as $dat) {
                        $key = $dat['key'];

                        if (preg_match('/' . $this->getServiceId() . '_' . $this->getComponent() . '/', $key)) {
                                $return[$key] = apc_fetch($key);
                        }
                }

                return $return;
        }


        protected function getActive() {
                return function_exists('apc_store');
        }


        protected function getInstallable() {
                return function_exists('apc_store');
        }


        protected function getMemoryLimit() {
                if (ilRuntime::getInstance()->isHHVM()) {
                        return $this->getMinMemory() . 'M';
                }

                return ini_get('apc.shm_size');
        }


        protected function getMinMemory() {
                return self::MIN_MEMORY;
        }
}

?>