proc_utils.h

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/*
 * ApMon - Application Monitoring Tool
 * Version: 2.2.0
 *
 * Copyright (C) 2006 California Institute of Technology
 *
 * Permission is hereby granted, free of charge, to use, copy and modify 
 * this software and its documentation (the "Software") for any
 * purpose, provided that existing copyright notices are retained in 
 * all copies and that this notice is included verbatim in any distributions
 * or substantial portions of the Software. 
 * This software is a part of the MonALISA framework (http://monalisa.cacr.caltech.edu).
 * Users of the Software are asked to feed back problems, benefits,
 * and/or suggestions about the software to the MonALISA Development Team
 * (developers@monalisa.cern.ch). Support for this software - fixing of bugs,
 * incorporation of new features - is done on a best effort basis. All bug
 * fixes and enhancements will be made available under the same terms and
 * conditions as the original software,

 * IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY FOR
 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
 * OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY DERIVATIVES THEREOF,
 * EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 * THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. THIS SOFTWARE IS
 * PROVIDED ON AN "AS IS" BASIS, AND THE AUTHORS AND DISTRIBUTORS HAVE NO
 * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR
 * MODIFICATIONS.
 */

#ifndef apmon_procutils_h
#define apmon_procutils_h

#include <time.h>
#include <stdexcept>

#ifndef WIN32
#include <sys/wait.h>
#endif

using namespace std;
 
class procutils_error : public runtime_error {
 public:
  procutils_error(char *msg) : runtime_error(msg) {}
};


class ProcUtils {

 public:  
  static void getCPUUsage(ApMon& apm, double& cpuUsage, 
                               double& cpuUsr, double& cpuSys, 
                               double& cpuNice, double& cpuIdle, int numCPUs) 
  throw (runtime_error, procutils_error);

  static void getSwapPages(ApMon& apm, double& pagesIn, 
                               double& pagesOut, double& swapIn, 
                             double& swapOut) 
    throw (runtime_error, procutils_error);

  static void getLoad(double& load1, double& load5, double& load15, 
               double& processes) throw(procutils_error);

  static void getProcesses(double& processes, double states[]) 
    throw(runtime_error); 

  static void getSysMem(double& totalMem, double& totalSwap) 
    throw(procutils_error);

  static void getMemUsed(double& usedMem, double&freeMem, double &usedSwap,
                  double& freeSwap) 
    throw(procutils_error);

  static void getNetworkInterfaces(int &nInterfaces, char names[][20]) 
    throw(procutils_error);

  static void getNetInfo(ApMon& apm, double **vNetIn, double **vNetOut, 
                  double **vNetErrs) 
    throw(runtime_error, procutils_error);

  static void getNetstatInfo(ApMon& apm, double nsockets[], double 
                             tcp_states[]) throw(runtime_error);

  static int getNumCPUs() throw(procutils_error);

  static void getCPUInfo(ApMon& apm) throw(procutils_error);

  static long getBootTime() throw (procutils_error);

  static double getUpTime() throw(procutils_error);


  static int countOpenFiles(long pid) throw(procutils_error);
};

#endif