WaitableEvent

chrome/plugin/npobject_proxy.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.
 //
 // A proxy for NPObject that sends all calls to the object to an NPObjectStub
 // running in a different process.
 
 #ifndef CHROME_PLUGIN_NPOBJECT_PROXY_H_
 #define CHROME_PLUGIN_NPOBJECT_PROXY_H_
 
 #include "base/ref_counted.h"
 #include "chrome/common/ipc_channel.h"
 #include "third_party/npapi/bindings/npruntime.h"
 
 class PluginChannelBase;
 struct NPObject;
 struct NPVariant_Param;
 
+namespace base {
+class WaitableEvent;
+}
+
 // When running a plugin in a different process from the renderer, we need to
 // proxy calls to NPObjects across process boundaries.  This happens both ways,
 // as a plugin can get an NPObject for the window, and a page can get an
 // NPObject for the plugin.  In the process that interacts with the NPobject we
 // give it an NPObjectProxy instead.  All calls to it are sent across an IPC
 // channel (specifically, a PluginChannelBase).  The NPObjectStub on the other
 // side translates the IPC messages into calls to the actual NPObject, and
 // returns the marshalled result.
 class NPObjectProxy : public IPC::Channel::Listener,
                       public IPC::Message::Sender {
  public:
   ~NPObjectProxy();
 
+  // modal_dialog_event_ is must be valid for the lifetime of the NPObjectProxy.
   static NPObject* Create(PluginChannelBase* channel,
                           int route_id,
                           void* npobject_ptr,
-                          HANDLE modal_dialog_event);
+                          base::WaitableEvent* modal_dialog_event);
 
   // IPC::Message::Sender implementation:
   bool Send(IPC::Message* msg);
   int route_id() { return route_id_; }
   PluginChannelBase* channel() { return channel_; }
 
   // Returns the real NPObject's pointer (obviously only valid in the other
   // process).
   void* npobject_ptr() { return npobject_ptr_; }
 
@@ skipping 40 matching lines @@
                               uint32_t arg_count,
                               NPVariant *result);
 
   static NPObjectProxy* GetProxy(NPObject* object);
   static const NPClass* npclass() { return &npclass_proxy_; }
 
  private:
   NPObjectProxy(PluginChannelBase* channel,
                 int route_id,
                 void* npobject_ptr,
-                HANDLE modal_dialog_event);
+                base::WaitableEvent* modal_dialog_event);
 
   // IPC::Channel::Listener implementation:
   void OnMessageReceived(const IPC::Message& msg);
   void OnChannelError();
 
   static NPObject* NPAllocate(NPP, NPClass*);
   static void NPDeallocate(NPObject* npObj);
 
   // This function is only caled on NPObjects from the plugin.
   static void NPPInvalidate(NPObject *obj);
   static NPClass npclass_proxy_;
 
   int route_id_;
   void* npobject_ptr_;
   scoped_refptr<PluginChannelBase> channel_;
-  HANDLE modal_dialog_event_;
+  base::WaitableEvent* modal_dialog_event_;
 };
 
 #endif  // CHROME_PLUGIN_NPOBJECT_PROXY_H_