Retrieves cached information from data store
@since 2.2
array An associative array with server's statistics if available, NULL otherwise.
Overrides CacheProvider::doGetStats
protected function doGetStats() {
$info = apc_cache_info();
$sma = apc_sma_info();
return array(
Cache::STATS_HITS => $info['num_hits'],
Cache::STATS_MISSES => $info['num_misses'],
Cache::STATS_UPTIME => $info['start_time'],
Cache::STATS_MEMORY_USAGE => $info['mem_size'],
Cache::STATS_MEMORY_AVAILIABLE => $sma['avail_mem'],
);
}