ShmCache.php

@@ -35,14 +35,24 @@ class Parser{
         static $self;
         if (empty($self)){
             $self = new self;
+            
+            //初始化缓存句柄
+            if (function_exists('apcu_store')){
+                $self->cache = Yii::createObject([
+                    'class'=>'yii\caching\ApcCache',
+                    'useApcu'=>true
+                ]);
+            }elseif (function_exists('apc_store')){
+                $self->cache = Yii::createObject('yii\caching\ApcCache');
+            }elseif (function_exists('shm_attach')){
+                $self->cache = Yii::createObject('common\components\caching\ShmCache');
+            }else{
+                $self->cache = Yii::createObject('yii\caching\ArrayCache');
+            }
         }
         return $self;
     }
     
-    public function __construct() {
-        $this->cache = Yii::createObject('yii\caching\ArrayCache');
-    }
-    
     /**
      * 载入路径
      * @param type $path

+<?php
+
+namespace common\components\caching;
+
+use yii\caching\Cache;
+use yii\base\InvalidConfigException;
+
+class ShmCache extends Cache
+{
+
+    //memory size bytes,default 10MB
+    public $memSize = 10485760;
+    
+    protected $shm;
+
+    /**
+     * Initializes this application component.
+     * It checks if extension required is loaded.
+     */
+    public function init()
+    {
+        parent::init();
+        if (!extension_loaded('sysvshm')) {
+            throw new InvalidConfigException("ShmCache requires PHP sysvshm extension to be loaded.");
+        }
+        
+        $key = ftok(__FILE__, 'p');
+        $this->shm = shm_attach($key,10000);
+    }
+    
+    public function exists($key)
+    {
+        $key = $this->buildKey($key);
+
+        return shm_has_var($this->shm,$key);
+    }
+    
+    protected function getValue($key)
+    {
+        return @shm_get_var($this->shm,$key);
+    }
+    
+    protected function getValues($keys)
+    {
+        $results = [];
+        foreach ($keys as $key) {
+            $results[$key] = @shm_get_var($this->shm,$key);
+        }
+        return $results;
+    }
+    
+    protected function setValue($key, $value, $duration)
+    {
+        return shm_put_var($this->shm,$key,$value);
+    }
+    
+    protected function addValue($key, $value, $duration)
+    {
+        return shm_has_var($this->shm,$key) ? false : shm_put_var($this->shm,$key,$value);
+    }
+    
+    protected function deleteValue($key)
+    {
+        return @shm_remove_var($this->shm,$key);
+    }
+    
+    protected function flushValues()
+    {
+        return shm_remove($this->shm);
+    }
+    
+    public function buildKey($key)
+    {
+        return crc32(parent::buildKey($key));
+    }
+}