Remove atomic

paddle/fluid/framework/reader.cc

@@ -18,9 +18,7 @@ namespace paddle {
 namespace framework {
 
 void ReaderBase::ReadNext(std::vector<LoDTensor> *out) {
-  if (status_ != ReaderStatus::kRunning) {
-    PADDLE_THROW("The reader is not at the status of 'running'.");
-  }
+  PADDLE_ENFORCE_EQ(status_, ReaderStatus::kRunning);
   ReadNextImpl(out);
 }
 

paddle/fluid/framework/reader.h

@@ -14,7 +14,6 @@
 
 #pragma once
 
-#include <atomic>
 #include <memory>
 #include <vector>
 
@@ -44,7 +43,7 @@ class ReaderBase {
 
   virtual void StartImpl() = 0;
 
-  std::atomic<ReaderStatus> status_{kRunning};
+  ReaderStatus status_{kRunning};
 };
 
 class DecoratedReader : public ReaderBase {