MallocStats.h

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/*
  Copyright (C) 2002-2021 CERN for the benefit of the ATLAS collaboration
*/
 
// MallocStats.h 
// Author: S.Binet<binet@cern.ch>
#ifndef PERFMONEVENT_PERFMONMALLOCSTATS_H 
#define PERFMONEVENT_PERFMONMALLOCSTATS_H 1
 
// the following code has been reaped off the STXXL library (boost licence)
// see http://stxxl.sourceforge.net/ for licence
 
#include <iostream>
#include "PerfMonEvent/mallinfo.h"
#include <cstdlib>
#include <string>
 
namespace PerfMon {
 
 
class MallocStats
{
  PerfMon::mallinfo_t m_infos;
 
public:
 
  MallocStats();
 
  typedef int return_type;
 
  void refresh()
  { m_infos = PerfMon::mallinfo(); }
 
  return_type from_system_nmmap()
  {
    refresh();
    return m_infos.arena;
  }
 
  return_type free_chunks()
  {
    refresh();
    return m_infos.ordblks;
  }
 
  return_type used()
  {
    refresh();
    return m_infos.uordblks;
  }
 
  return_type not_used()
  {
    refresh();
    return m_infos.fordblks;
  }
 
  return_type releasable()
  {
    refresh();
    return m_infos.keepcost;
  }
 
  return_type max_allocated()
  {
    refresh();
    return m_infos.usmblks;
  }
 
  return_type fastbin_blocks()
  {
    refresh();
    return m_infos.smblks;
  }
 
  return_type fastbin_free()
  {
    refresh();
    return m_infos.fsmblks;
  }
 
  return_type from_system_mmap()
  {
    refresh();
    return m_infos.hblkhd;
  }
 
  return_type mmap_chunks()
  {
    refresh();
    return m_infos.hblks;
  }
 
  return_type from_system_total()
  {
    refresh();
    return from_system_nmmap() + from_system_mmap();
  }
 
  std::string repr();
 
  void dump (std::ostream& out = std::cout);
};
 
} //> end namespace PerfMon
 
#endif // !PERFMONEVENT_PERFMONMALLOCSTATS_H