update data_feed for add MultiSlotDataFeed

paddle/fluid/framework/data_feed.cc

@@ -155,7 +155,7 @@ void MultiSlotDataFeed::Init(paddle::framework::DataFeedDesc& data_feed_desc) {
   finish_init_ = false;
   finish_set_filelist_ = false;
   finish_start_ = false;
-  /*
+  
   if (!data_feed_desc.has_multi_slot_desc()){
     LOG(ERROR) << "error: multi_slot_desc has not been set";
     exit(-1);
@@ -178,7 +178,7 @@ void MultiSlotDataFeed::Init(paddle::framework::DataFeedDesc& data_feed_desc) {
     }
   }
   feed_vec_.resize(use_slots_.size());
-  */
+  
   finish_init_ = true;
 }
 

paddle/fluid/framework/data_feed.h

@@ -176,8 +176,8 @@ class DataFeed {
     LOG(ERROR) << "error: The function SetBufferSize is not implemented";
     exit(-1);
   }
-  virtual const std::vector<std::string>& GetAllSlots() {return all_slots_;}
-  virtual const std::vector<std::string>& GetUseSlots() {return use_slots_;}
+  virtual const std::vector<std::string>& GetAllSlotAlias() {return all_slots_;}
+  virtual const std::vector<std::string>& GetUseSlotAlias() {return use_slots_;}
   std::vector<MixTensor>& GetFeedVec() {return feed_vec_;}
   virtual void AddFeedVar(Variable* var, const std::string& name);
  protected: