Make it easier to create new IPC channel types (i.e. renderer/plugin). Inste...

chrome/common/ipc_logging.h

 // 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.
 
 #ifndef CHROME_COMMON_IPC_LOGGING_H_
 #define CHROME_COMMON_IPC_LOGGING_H_
 
 #include "chrome/common/ipc_message.h"  // For IPC_MESSAGE_LOG_ENABLED.
 
 #ifdef IPC_MESSAGE_LOG_ENABLED
 
 #include "base/lock.h"
 #include "base/object_watcher.h"
 #include "base/singleton.h"
+#include "chrome/common/ipc_message_utils.h"
 
 class MessageLoop;
 
 namespace IPC {
 
 class Message;
 
 // One instance per process.  Needs to be created on the main thread (the UI
 // thread in the browser) but OnPreDispatchMessage/OnPostDispatchMessage
 // can be called on other threads.
 class Logging : public base::ObjectWatcher::Delegate {
  public:
   // Implemented by consumers of log messages.
   class Consumer {
    public:
-    virtual void Log(const IPC::LogData& data) = 0;
+    virtual void Log(const LogData& data) = 0;
   };
 
   void SetConsumer(Consumer* consumer);
 
   ~Logging();
   static Logging* current();
 
   void Enable();
   void Disable();
   bool inline Enabled() const;
 
   // Called by child processes to give the logger object the channel to send
   // logging data to the browser process.
-  void SetIPCSender(IPC::Message::Sender* sender);
+  void SetIPCSender(Message::Sender* sender);
 
   // Called in the browser process when logging data from a child process is
   // received.
   void OnReceivedLoggingMessage(const Message& message);
 
   void OnSendMessage(Message* message, const std::wstring& channel_id);
   void OnPreDispatchMessage(const Message& message);
   void OnPostDispatchMessage(const Message& message,
                              const std::wstring& channel_id);
 
   // Returns the name of the logging enabled/disabled events so that the
   // sandbox can add them to to the policy.  If true, gets the name of the
   // enabled event, if false, gets the name of the disabled event.
   static std::wstring GetEventName(bool enabled);
 
   // Like the *MsgLog functions declared for each message class, except this
   // calls the correct one based on the message type automatically.  Defined in
   // ipc_logging.cc.
   static void GetMessageText(uint16 type, std::wstring* name,
                              const Message* message, std::wstring* params);
 
   // ObjectWatcher::Delegate implementation
   void OnObjectSignaled(HANDLE object);
 
+  typedef void (LogFunction)(uint16 type,
+                             std::wstring* name,
+                             const Message* msg,
+                             std::wstring* params);
+  void RegisterMessageLogger(int msg_start, LogFunction* func); 
+
  private:
-  friend struct DefaultSingletonTraits<IPC::Logging>;
+  friend struct DefaultSingletonTraits<Logging>;
   Logging();
 
   std::wstring GetEventName(int browser_pid, bool enabled);
   void OnSendLogs();
   void Log(const LogData& data);
 
   void RegisterWaitForEvent(bool enabled);
 
   base::ObjectWatcher watcher_;
 
   HANDLE logging_event_on_;
   HANDLE logging_event_off_;
   bool enabled_;
 
   std::vector<LogData> queued_logs_;
   bool queue_invoke_later_pending_;
 
-  IPC::Message::Sender* sender_;
+  Message::Sender* sender_;
   MessageLoop* main_thread_;
 
   Consumer* consumer_;
+
+  LogFunction* log_function_mapping_[LastMsgIndex];
 };
 
 }  // namespace IPC
 
 #endif // IPC_MESSAGE_LOG_ENABLED
 
 #endif  // CHROME_COMMON_IPC_LOGGING_H_