public function getUsage()
{
if (!function_exists('memcache_get_extended_stats')) {
return false;
}
if ($this->usage === null) {
$servers = DebugBar::getConfig('memcached');
$server = array_shift($servers);
$memcache = memcache_connect($server['host'], $server['port']);
if ($memcache === false) {
return false;
}
foreach ($servers as $server) {
memcache_add_server($memcache, $server['host'], $server['port']);
}
$stats = memcache_get_extended_stats($memcache);
$memory_used = 0;
$memory_total = 0;
foreach ($stats as $host => $usage) {
$memory_used += $usage['bytes'];
$memory_total += $usage['limit_maxbytes'];
$this->usage[$host] = array('Version' => $usage['version'], 'Uptime' => $this->formatSeconds($usage['uptime']), 'Total memory' => $this->formatBytes($usage['limit_maxbytes']), 'Used memory' => $this->formatBytes($usage['bytes']), 'Available memory' => $this->formatBytes($usage['limit_maxbytes'] - $usage['bytes']), 'Threads / second' => $this->formatNum($usage['total_connections'] / $usage['uptime']), 'Current threads' => $usage['curr_connections'], 'Queries / second' => $this->formatNum($usage['cmd_get'] / $usage['uptime']), 'Hits' => $usage['get_hits'] . ' (' . $this->formatNum($usage['get_hits'] * 100 / $usage['cmd_get']) . '%)', 'Misses' => $usage['get_misses'] . ' (' . $this->formatNum($usage['get_misses'] * 100 / $usage['cmd_get']) . '%)', 'Inserts' => $usage['cmd_set'], 'Deletes' => $usage['delete_hits'], 'Items' => $usage['curr_items']);
}
$this->percent_used = $this->formatNum($memory_used * 100 / $memory_total);
}
return $this->usage;
}
/**
* Clear contents of cache backend
* @return bool
* @param $suffix string
* @param $lifetime int
**/
function reset($suffix = NULL, $lifetime = 0)
{
if (!$this->dsn) {
return TRUE;
}
$regex = '/' . preg_quote($this->prefix . '.', '/') . '.+?' . preg_quote($suffix, '/') . '/';
$parts = explode('=', $this->dsn, 2);
switch ($parts[0]) {
case 'apc':
$info = apc_cache_info('user');
foreach ($info['cache_list'] as $item) {
if (preg_match($regex, $item['info']) && $item['mtime'] + $lifetime < time()) {
apc_delete($item['info']);
}
}
return TRUE;
case 'memcache':
foreach (memcache_get_extended_stats($this->ref, 'slabs') as $slabs) {
foreach (array_filter(array_keys($slabs), 'is_numeric') as $id) {
foreach (memcache_get_extended_stats($this->ref, 'cachedump', $id) as $data) {
if (is_array($data)) {
foreach ($data as $key => $val) {
if (preg_match($regex, $key) && $val[1] + $lifetime < time()) {
memcache_delete($this->ref, $key);
}
}
}
}
}
}
return TRUE;
case 'wincache':
$info = wincache_ucache_info();
foreach ($info['ucache_entries'] as $item) {
if (preg_match($regex, $item['key_name']) && $item['use_time'] + $lifetime < time()) {
apc_delete($item['key_name']);
}
}
return TRUE;
case 'xcache':
return TRUE;
/* Not supported */
/* Not supported */
case 'folder':
if ($glob = @glob($parts[1] . '*')) {
foreach ($glob as $file) {
if (preg_match($regex, basename($file)) && filemtime($file) + $lifetime < time()) {
@unlink($file);
}
}
}
return TRUE;
}
return FALSE;
}
/**
* Clear contents of cache backend
* @return bool
* @param $suffix string
* @param $lifetime int
**/
function reset($suffix = NULL, $lifetime = 0)
{
if (!$this->dsn) {
return TRUE;
}
$regex = '/' . preg_quote($this->prefix . '.', '/') . '.+?' . preg_quote($suffix, '/') . '/';
$parts = explode('=', $this->dsn, 2);
switch ($parts[0]) {
case 'apc':
case 'apcu':
$info = apc_cache_info('user');
if (!empty($info['cache_list'])) {
$key = array_key_exists('info', $info['cache_list'][0]) ? 'info' : 'key';
$mtkey = array_key_exists('mtime', $info['cache_list'][0]) ? 'mtime' : 'modification_time';
foreach ($info['cache_list'] as $item) {
if (preg_match($regex, $item[$key]) && $item[$mtkey] + $lifetime < time()) {
apc_delete($item[$key]);
}
}
}
return TRUE;
case 'redis':
$fw = Base::instance();
$keys = $this->ref->keys($this->prefix . '.*' . $suffix);
foreach ($keys as $key) {
$val = $fw->unserialize($this->ref->get($key));
if ($val[1] + $lifetime < time()) {
$this->ref->del($key);
}
}
return TRUE;
case 'memcache':
foreach (memcache_get_extended_stats($this->ref, 'slabs') as $slabs) {
foreach (array_filter(array_keys($slabs), 'is_numeric') as $id) {
foreach (memcache_get_extended_stats($this->ref, 'cachedump', $id) as $data) {
if (is_array($data)) {
foreach ($data as $key => $val) {
if (preg_match($regex, $key) && $val[1] + $lifetime < time()) {
memcache_delete($this->ref, $key);
}
}
}
}
}
}
return TRUE;
case 'wincache':
$info = wincache_ucache_info();
foreach ($info['ucache_entries'] as $item) {
if (preg_match($regex, $item['key_name']) && $item['use_time'] + $lifetime < time()) {
wincache_ucache_delete($item['key_name']);
}
}
return TRUE;
case 'xcache':
return TRUE;
/* Not supported */
/* Not supported */
case 'folder':
if ($glob = @glob($parts[1] . '*')) {
foreach ($glob as $file) {
if (preg_match($regex, basename($file)) && filemtime($file) + $lifetime < time()) {
@unlink($file);
}
}
}
return TRUE;
}
return FALSE;
}
/**
* 缓存服务器池中所有服务器统计信息
*
* @param mixed $type 期望抓取的统计信息类型，可以使用的值有{reset, malloc, maps, cachedump, slabs, items, sizes}
* @param mixed $slabid cachedump命令会完全占用服务器通常用于 比较严格的调
* @param mixed $limit 从服务端获取的实体条数
*/
public function getExtendedStats($type = '', $slabid = 0, $limit = 100)
{
$re = memcache_get_extended_stats($this->memcache, $type, $slabid, $limit);
return $re;
}