Zoltan2_MetricOutputManager.hpp

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// @HEADER
// *****************************************************************************
//   Zoltan2: A package of combinatorial algorithms for scientific computing
//
// Copyright 2012 NTESS and the Zoltan2 contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER

#ifndef _ZOLTAN2_METRICOUTPUT_MANAGER_CPP_
#define _ZOLTAN2_METRICOUTPUT_MANAGER_CPP_

#include <string>
#include <iostream>
#include <fstream>

namespace Zoltan2
{
template <typename T>
  class MetricOutputManager
{
    public:

    MetricOutputManager (int rank, bool doPrinting, std::ofstream &Os, 
      bool metricsOn, std::string units=std::string(""), int width=10): 
        me_(rank), 
        os_(static_cast<std::ostream *>(&Os)), osFile_(&Os),
        iPrint_(doPrinting), wePrint_(metricsOn), 
        units_(units), width_(width){}


    MetricOutputManager (int rank, bool doPrinting, std::ostream &Os, 
      bool metricsOn, std::string units=std::string(""), int width=10): 
        me_(rank), os_(&Os), osFile_(NULL), 
        iPrint_(doPrinting), wePrint_(metricsOn),
        units_(units), width_(width){}

    ~MetricOutputManager() {}

    inline std::ostream *getOStream() const { return os_; }

    inline bool getMetricsOn() const { return wePrint_; }

    inline void print(const std::string &msg, const T val){
      if (iPrint_){
        if (os_){
          os_->width(10); os_->fill('*');
          *os_ << me_ << ": " << val << " " << units_ << ", " << msg << std::endl;
          os_->width(0); os_->fill(' ');
        }
        else{
          osFile_->width(10); osFile_->fill('*');
          *osFile_ << me_ << ": " << val << " " << units_ << ", " << msg << std::endl;
          osFile_->width(0); osFile_->fill(' ');
        }
      }
    }

    inline void print(const char *msg, T val){
      if (iPrint_){
        if (os_){
          os_->width(10); os_->fill('*');
          *os_ << me_ << ": " << val << " " << units_ << ", " << msg << std::endl;
          os_->width(0); os_->fill(' ');
        }
        else{
          osFile_->width(10); osFile_->fill('*');
          *osFile_ << me_ << ": " << val << " " << units_ << ", " << msg << std::endl;
          osFile_->width(0); osFile_->fill(' ');
        }
      }
    }

private:

    int me_;
    std::ostream *os_;
    std::ofstream *osFile_;
    bool iPrint_;    // I am printing metrics
    bool wePrint_;   // at least one process is printing metrics
    std::string units_;
    int width_;  
};

} //namespace Zoltan2

#endif