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/* -*- Mode: C++; tab-width: 50; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef _LOADMONITOR_H_
#define _LOADMONITOR_H_
#include "mozilla/Mutex.h"
#include "mozilla/CondVar.h"
#include "mozilla/RefPtr.h"
#include "mozilla/Atomics.h"
#include "nsCOMPtr.h"
#include "nsIThread.h"
#include "nsIObserver.h"
namespace mozilla {
class LoadInfoCollectRunner;
class LoadNotificationCallback
{
public:
virtual void LoadChanged(float aSystemLoad, float aProcessLoad) = 0;
};
class LoadMonitor final : public nsIObserver
{
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSIOBSERVER
explicit LoadMonitor(int aLoadUpdateInterval);
nsresult Init(RefPtr<LoadMonitor> &self);
void SetLoadChangeCallback(LoadNotificationCallback* aCallback);
void Shutdown();
float GetSystemLoad();
float GetProcessLoad();
friend class LoadInfoCollectRunner;
private:
~LoadMonitor();
void SetProcessLoad(float load);
void SetSystemLoad(float load);
void FireCallbacks();
int mLoadUpdateInterval;
mozilla::Mutex mLock;
mozilla::CondVar mCondVar;
bool mShutdownPending;
nsCOMPtr<nsIThread> mLoadInfoThread;
float mSystemLoad;
float mProcessLoad;
LoadNotificationCallback* mLoadNotificationCallback;
};
} //namespace
#endif /* _LOADMONITOR_H_ */
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