refine name

paddle/fluid/framework/threadpool.cc

@@ -95,15 +95,15 @@ void ThreadPool::TaskLoop() {
   }
 }
 
-std::unique_ptr<ThreadPool> MultiStreamThreadPool::io_threadpool_(nullptr);
+std::unique_ptr<ThreadPool> ThreadPoolIO::io_threadpool_(nullptr);
-std::once_flag MultiStreamThreadPool::io_init_flag_;
+std::once_flag ThreadPoolIO::io_init_flag_;
 
-ThreadPool* MultiStreamThreadPool::GetInstanceIO() {
+ThreadPool* ThreadPoolIO::GetInstanceIO() {
-  std::call_once(io_init_flag_, &MultiStreamThreadPool::InitIO);
+  std::call_once(io_init_flag_, &ThreadPoolIO::InitIO);
   return io_threadpool_.get();
 }
 
-void MultiStreamThreadPool::InitIO() {
+void ThreadPoolIO::InitIO() {
   if (io_threadpool_.get() == nullptr) {
     // TODO(typhoonzero1986): make this configurable
     io_threadpool_.reset(new ThreadPool(FLAGS_io_threadpool_size));

paddle/fluid/framework/threadpool.h

@@ -135,7 +135,7 @@ class ThreadPool {
   std::condition_variable completed_;
 };
 
-class MultiStreamThreadPool : ThreadPool {
+class ThreadPoolIO : ThreadPool {
  public:
   static ThreadPool* GetInstanceIO();
   static void InitIO();
@@ -156,7 +156,7 @@ std::future<void> Async(Callback callback) {
 
 template <typename Callback>
 std::future<void> AsyncIO(Callback callback) {
-  return MultiStreamThreadPool::GetInstanceIO()->Run(callback);
+  return ThreadPoolIO::GetInstanceIO()->Run(callback);
 }
 
 }  // namespace framework