Prevent an extra copy of data types that get passed into IPC messages when...

chrome/common/ipc_fuzzing_tests.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdio.h>
 #include <iostream>
 #include <string>
 #include <sstream>
 
 #include "base/message_loop.h"
@@ skipping 98 matching lines @@
   CLIENT_MALFORMED_IPC,     // Sent to client if server detects bad message.
   CLIENT_UNHANDLED_IPC      // Sent to client if server detects unhanded IPC.
 };
 
 // Generic message class that is an int followed by a wstring.
 class MsgClassIS : public IPC::MessageWithTuple< Tuple2<int, std::wstring> > {
  public:
   enum { ID = SERVER_FIRST_IPC_TYPE };
   MsgClassIS(const int& arg1, const std::wstring& arg2)
       : IPC::MessageWithTuple< Tuple2<int, std::wstring> >(
-            MSG_ROUTING_CONTROL, ID, MakeTuple(arg1, arg2)) {}
+            MSG_ROUTING_CONTROL, ID, MakeRefTuple(arg1, arg2)) {}
 };
 
 // Generic message class that is a wstring followed by an int.
 class MsgClassSI : public IPC::MessageWithTuple< Tuple2<std::wstring, int> > {
  public:
   enum { ID = SERVER_SECOND_IPC_TYPE };
   MsgClassSI(const std::wstring& arg1, const int& arg2)
       : IPC::MessageWithTuple< Tuple2<std::wstring, int> >(
-            MSG_ROUTING_CONTROL, ID, MakeTuple(arg1, arg2)) {}
+            MSG_ROUTING_CONTROL, ID, MakeRefTuple(arg1, arg2)) {}
 };
 
 // Message to create a mutex in the IPC server, using the received name.
 class MsgDoMutex : public IPC::MessageWithTuple< Tuple2<std::wstring, int> > {
  public:
   enum { ID = SERVER_THIRD_IPC_TYPE };
   MsgDoMutex(const std::wstring& mutex_name, const int& unused)
       : IPC::MessageWithTuple< Tuple2<std::wstring, int> >(
-            MSG_ROUTING_CONTROL, ID, MakeTuple(mutex_name, unused)) {}
+            MSG_ROUTING_CONTROL, ID, MakeRefTuple(mutex_name, unused)) {}
 };
 
 class SimpleListener : public IPC::Channel::Listener {
  public:
   SimpleListener() : other_(NULL) {
   }
   void Init(IPC::Message::Sender* s) {
     other_ = s;
   }
  protected:
@@ skipping 273 matching lines @@
   msg = new IPC::Message(MSG_ROUTING_CONTROL, MsgClassIS::ID,
                          IPC::Message::PRIORITY_NORMAL);
   msg->WriteInt(0x64);
   msg->WriteInt(0x32);
   EXPECT_FALSE(server.OnMessageReceived(*msg));
   delete msg;
 
   EXPECT_EQ(0, server.unhandled_msgs());
 #endif
 }