The Tor Browser: content/media/webrtc/LoadMonitor.h@44a2da4a2ab2

Replace accessor implementation with direct member state manipulation, by
request https://trac.torproject.org/projects/tor/ticket/9701#comment:32

     1 /* -*- Mode: C++; tab-width: 50; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef _LOADMONITOR_H_

     7 #define _LOADMONITOR_H_

     9 #include "mozilla/Mutex.h"

    10 #include "mozilla/CondVar.h"

    11 #include "mozilla/RefPtr.h"

    12 #include "mozilla/Atomics.h"

    13 #include "nsAutoPtr.h"

    14 #include "nsCOMPtr.h"

    15 #include "nsIThread.h"

    16 #include "nsIObserver.h"

    18 namespace mozilla {

    19 class LoadInfoUpdateRunner;

    20 class LoadInfoCollectRunner;

    22 class LoadNotificationCallback

    23 {

    24 public:

    25     virtual void LoadChanged(float aSystemLoad, float aProcessLoad) = 0;

    26 };

    28 class LoadMonitor MOZ_FINAL : public nsIObserver

    29 {

    30 public:

    31     NS_DECL_THREADSAFE_ISUPPORTS

    32     NS_DECL_NSIOBSERVER

    34     LoadMonitor(int aLoadUpdateInterval);

    35     ~LoadMonitor();

    37     nsresult Init(nsRefPtr<LoadMonitor> &self);

    38     void SetLoadChangeCallback(LoadNotificationCallback* aCallback);

    39     void Shutdown();

    40     float GetSystemLoad();

    41     float GetProcessLoad();

    43     friend class LoadInfoCollectRunner;

    45 private:

    47     void SetProcessLoad(float load);

    48     void SetSystemLoad(float load);

    49     void FireCallbacks();

    51     int                  mLoadUpdateInterval;

    52     mozilla::Mutex       mLock;

    53     mozilla::CondVar     mCondVar;

    54     bool                 mShutdownPending;

    55     nsCOMPtr<nsIThread>  mLoadInfoThread;

    56     float                mSystemLoad;

    57     float                mProcessLoad;

    58     LoadNotificationCallback* mLoadNotificationCallback;

    59 };

    61 } //namespace

    63 #endif /* _LOADMONITOR_H_ */

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