First pass at making the proxy handle multiple renderers. This associates the...

ppapi/proxy/plugin_dispatcher.h

 // Copyright (c) 2010 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 PPAPI_PROXY_PLUGIN_DISPATCHER_H_
 #define PPAPI_PROXY_PLUGIN_DISPATCHER_H_
 
 #include <string>
 
 #include "base/process.h"
 #include "base/scoped_ptr.h"
-#include "ppapi/proxy/callback_tracker.h"
+#include "ppapi/c/pp_instance.h"
 #include "ppapi/proxy/dispatcher.h"
-#include "ppapi/proxy/plugin_resource_tracker.h"
-#include "ppapi/proxy/plugin_var_tracker.h"
 
 class MessageLoop;
 
 namespace base {
 class WaitableEvent;
 }
 
 namespace pp {
 namespace proxy {
 
 class PluginDispatcher : public Dispatcher {
  public:
   // Constructor for the plugin side. The init and shutdown functions will be
   // will be automatically called when requested by the renderer side. The
   // module ID will be set upon receipt of the InitializeModule message.
   //
   // You must call Dispatcher::InitWithChannel after the constructor.
   PluginDispatcher(base::ProcessHandle remote_process_handle,
                    GetInterfaceFunc get_interface,
                    InitModuleFunc init_module,
                    ShutdownModuleFunc shutdown_module);
   ~PluginDispatcher();
 
-  // The plugin maintains a global Dispatcher pointer. There is only one since
-  // there is only one connection to the browser. Don't call this on the
-  // browser side, see GetForInstnace.
+  // Sets/gets the global dispatcher pointer. New code should use the
+  // GetForInstance version below, this is currently here as a stopgap while
+  // the transition is being made.
+  //
+  // TODO(brettw) remove this.
   static PluginDispatcher* Get();
   static void SetGlobal(PluginDispatcher* dispatcher);
 
+  // The plugin side maintains a mapping from PP_Instance to Dispatcher so
+  // that we can send the messages to the right channel if there are multiple
+  // renderers sharing the same plugin.
+  static PluginDispatcher* GetForInstance(PP_Instance instance);
+  /* TODO(brettw) enable this when Get() is removed.
+  static void SetForInstance(PP_Instance instance,
+                             PluginDispatcher* dispatcher);
+  static void RemoveForInstance(PP_Instance instance);
+  */
+
   // Dispatcher overrides.
   virtual bool IsPlugin() const;
 
   // IPC::Channel::Listener implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg);
 
-  // Returns the resource tracker for the plugin. In the browser process this
-  // will return NULL.
-  PluginResourceTracker* plugin_resource_tracker() {
-    return plugin_resource_tracker_.get();
-  }
-
-  // Returns the var tracker for the plugin. In the browser process this
-  // will return NULL.
-  PluginVarTracker* plugin_var_tracker() {
-    return plugin_var_tracker_.get();
-  }
-
  private:
   // IPC message handlers.
   void OnMsgInitializeModule(PP_Module pp_module, bool* result);
   void OnMsgShutdown();
 
   InitModuleFunc init_module_;
   ShutdownModuleFunc shutdown_module_;
 
-  scoped_ptr<PluginResourceTracker> plugin_resource_tracker_;
-  scoped_ptr<PluginVarTracker> plugin_var_tracker_;
-
   DISALLOW_COPY_AND_ASSIGN(PluginDispatcher);
 };
 
 }  // namespace proxy
 }  // namespace pp
 
 #endif  // PPAPI_PROXY_PLUGIN_DISPATCHER_H_