add log for study server threading

webcc/connection.h

@@ -13,6 +13,11 @@
 #include "webcc/request_parser.h"
 #include "webcc/response.h"
 
+// Set 1 to enable the log for the study of server thread model.
+// Need to use multiple workers and loops for Server::Run().
+// Suggest to configure the log level to USER.
+#define WEBCC_STUDY_SERVER_THREADING 0
+
 namespace webcc {
 
 class Connection;
@@ -27,11 +32,11 @@ public:
              Queue<ConnectionPtr>* queue, ViewMatcher&& view_matcher,
              std::size_t buffer_size);
 
-  ~Connection() = default;
-
   Connection(const Connection&) = delete;
   Connection& operator=(const Connection&) = delete;
 
+  ~Connection() = default;
+
   RequestPtr request() const {
     return request_;
   }
@@ -53,16 +58,19 @@ public:
   void SendResponse(Status status, bool no_keep_alive = false);
 
 private:
-  void DoRead();
+  void AsyncRead();
   void OnRead(boost::system::error_code ec, std::size_t length);
 
-  void DoWrite();
+  void AsyncWrite();
   void OnWriteHeaders(boost::system::error_code ec, std::size_t length);
-  void DoWriteBody();
-  void OnWriteBody(boost::system::error_code ec, std::size_t length);
-  void OnWriteOK();
-  void OnWriteError(boost::system::error_code ec);
 
+  void AsyncWriteBody();
+  void OnWriteBody(boost::system::error_code ec, std::size_t length);
+
+  void HandleWriteOK();
+  void HandleWriteError(boost::system::error_code ec);
+
+private:
   // The socket for the connection.
   boost::asio::ip::tcp::socket socket_;