Render/pepper hang debugging: generate dumps for the browser and renderer processes if users kill a…

ppapi/shared_impl/ppapi_message_tracker.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_SHARED_IMPL_PPAPI_MESSAGE_TRACKER_H_
-#define PPAPI_SHARED_IMPL_PPAPI_MESSAGE_TRACKER_H_
-
-#include "base/basictypes.h"
-#include "base/synchronization/lock.h"
-#include "ppapi/shared_impl/ppapi_shared_export.h"
-
-template <typename T> struct DefaultSingletonTraits;
-
-namespace ppapi {
-
-// PpapiMessageTracker uses a counter to record whether anyone is sending or
-// receiving pepper messages in the current process.
-// This class is thread safe.
-class PPAPI_SHARED_EXPORT PpapiMessageTracker {
- public:
-  static PpapiMessageTracker* GetInstance();
-
-  void EnterMessageHandling();
-  void ExitMessageHandling();
-  bool IsHandlingMessage();
-
- private:
-  friend struct DefaultSingletonTraits<PpapiMessageTracker>;
-
-  PpapiMessageTracker();
-  ~PpapiMessageTracker();
-
-  base::Lock lock_;
-  int enter_count_;
-
-  DISALLOW_COPY_AND_ASSIGN(PpapiMessageTracker);
-};
-
-class PPAPI_SHARED_EXPORT ScopedTrackPpapiMessage {
- public:
-  ScopedTrackPpapiMessage();
-  ~ScopedTrackPpapiMessage();
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(ScopedTrackPpapiMessage);
-};
-
-}  // namespace ppapi
-
-#endif  // PPAPI_SHARED_IMPL_PPAPI_MESSAGE_TRACKER_H_