ProcessMonitor.h

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/********************************************************************
**                Image Component Library (ICL)                    **
**                                                                 **
** Copyright (C) 2006-2013 CITEC, University of Bielefeld          **
**                         Neuroinformatics Group                  **
** Website: www.iclcv.org and                                      **
**          http://opensource.cit-ec.de/projects/icl               **
**                                                                 **
** File   : ICLUtils/src/ICLUtils/ProcessMonitor.h                 **
** Module : ICLUtils                                               **
** Authors: Christof Elbrechter                                    **
**                                                                 **
**                                                                 **
** GNU LESSER GENERAL PUBLIC LICENSE                               **
** This file may be used under the terms of the GNU Lesser General **
** Public License version 3.0 as published by the                  **
**                                                                 **
** Free Software Foundation and appearing in the file LICENSE.LGPL **
** included in the packaging of this file.  Please review the      **
** following information to ensure the license requirements will   **
** be met: http://www.gnu.org/licenses/lgpl-3.0.txt                **
**                                                                 **
** The development of this software was supported by the           **
** Excellence Cluster EXC 277 Cognitive Interaction Technology.    **
** The Excellence Cluster EXC 277 is a grant of the Deutsche       **
** Forschungsgemeinschaft (DFG) in the context of the German       **
** Excellence Initiative.                                          **
**                                                                 **
********************************************************************/

#pragma once

#include <ICLUtils/CompatMacros.h>
#include <ICLUtils/Thread.h>
#include <ICLUtils/Mutex.h>
#include <ICLUtils/Uncopyable.h>
#include <ICLUtils/Function.h>
#include <iostream>

namespace icl{
  namespace utils{


    class ICLUtils_API ProcessMonitor : protected Thread, public Uncopyable{
      struct Data;

      Data *m_data;

      public:

      struct Info{
        int pid;            // current process ID
        int numThreads;     // number of threads of the current process
        float cpuUsage;     // percent 0-numCPUs*100
        float allCpuUsage;  // percent 0-100
        float memoryUsage;  // used memory in MB
        int numCPUs;        // sometimes, this helps for visualization
      };

      protected:
      ProcessMonitor();

      public:

      static ProcessMonitor *getInstance();

      ~ProcessMonitor();

      virtual void run();

      Info getInfo() const;

      typedef Function<void,const Info&> Callback;


      int registerCallback(Callback cb);

      void removeCallback(int id);

      void removeAllCallbacks();
    };

    ICLUtils_API std::ostream &operator<<(std::ostream &s, const ProcessMonitor::Info &info);
  } // namespace utils
}