Out-of-process implementation of the PPB_NetworkMonitor_Private interface.

ppapi/proxy/ppb_network_monitor_private_proxy.h

+// Copyright (c) 2012 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_PPB_NETWORK_MONITOR_PRIVATE_PROXY_H_
+#define PPAPI_PROXY_PPB_NETWORK_MONITOR_PRIVATE_PROXY_H_
+
+#include <list>
+
+#include "base/observer_list_threadsafe.h"
+#include "base/synchronization/lock.h"

[dmichael (off chromium), 2012/03/15 20:01:28]

You shouldn't need this include (and it's probably fine to use a non-thread-safe
observer list). See comment below.

[Sergey Ulanov, 2012/03/15 22:18:00]

Done.

+#include "ppapi/proxy/interface_proxy.h"
+#include "ppapi/shared_impl/ppb_network_list_private_shared.h"
+#include "ppapi/shared_impl/scoped_pp_resource.h"
+#include "ppapi/thunk/ppb_network_monitor_private_api.h"
+
+namespace base {
+class MessageLoopProxy;
+}  // namespace base
+
+namespace ppapi {
+namespace proxy {
+
+class PPAPI_SHARED_EXPORT PPB_NetworkMonitor_Private_Proxy
+    : public InterfaceProxy {
+ public:
+  PPB_NetworkMonitor_Private_Proxy(Dispatcher* dispatcher);

[dmichael (off chromium), 2012/03/15 20:01:28]

nit: explicit

[Sergey Ulanov, 2012/03/15 22:18:00]

Done.

+  virtual ~PPB_NetworkMonitor_Private_Proxy();
+
+  // Creates an NetworkManager object in the plugin process.

[dmichael (off chromium), 2012/03/15 20:01:28]

nit: an->a

[Sergey Ulanov, 2012/03/15 22:18:00]

Done.

+  static PP_Resource CreateProxyResource(PP_Instance instance,
+                                         PPB_NetworkMonitor_Callback callback,
+                                         void* user_data);
+
+  // InterfaceProxy implementation.
+  virtual bool OnMessageReceived(const IPC::Message& msg);
+
+  static const ApiID kApiID = API_ID_PPB_NETWORKMANAGER_PRIVATE;
+
+ private:
+  class NetworkMonitor;
+  friend class NetworkMonitor;
+
+  // IPC message handler for the messages received from the browser.
+  void OnPluginMsgNetworkList(uint32 plugin_dispatcher_id,
+                              const ppapi::NetworkList& list);
+
+  // Called by NetworkMonitor destructor.
+  void OnNetworkMonitorDeleted(NetworkMonitor* monitor,
+                               PP_Instance instance);
+
+  scoped_refptr<ObserverListThreadSafe<NetworkMonitor> > monitors_;
+
+  // The lock must be acquired when accessing |monitors_count__| and
+  // |current_list_|.
+  base::Lock lock_;

[dmichael (off chromium), 2012/03/15 20:01:28]

The entire proxy will be behind 1 big lock, so this lock is unnecessary. You can
enable this in your local build if you want by building with
"enable_pepper_threading=1". It's not on by default yet until it's better tested
and feature complete.

[Sergey Ulanov, 2012/03/15 22:18:00]

I didn't know about it. Will it properly handle the case when a pepper interface
method is invoked from a callback, i.e. when the lock is already acquired by the
same thread?

Removed the lock.

+  int monitors_count_;
+  scoped_refptr<NetworkListStorage> current_list_;
+
+  DISALLOW_COPY_AND_ASSIGN(PPB_NetworkMonitor_Private_Proxy);
+};
+
+}  // namespace proxy
+}  // namespace ppapi
+
+#endif  // PPAPI_PROXY_PPB_NETWORK_MONITOR_PRIVATE_PROXY_H_