LWHistControls.cxx

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/*
  Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
*/
 
 
//                                                            //
//  Implementation of class LWHistControls                    //
//                                                            //
//  Author: Thomas H. Kittelmann (Thomas.Kittelmann@cern.ch)  //
//  Initial version: April 2009                               //
//                                                            //
 
#include "LWHists/LWHistControls.h"
#include "LWPools.h"
#include <atomic>
 
//____________________________________________________________________
class LWHistControls::Imp {
public:
  static std::atomic<bool> s_cleanupOnGetROOT;
  static std::atomic<bool> s_rootBackend;
};
std::atomic<bool> LWHistControls::Imp::s_cleanupOnGetROOT = true;
std::atomic<bool> LWHistControls::Imp::s_rootBackend = false;
 
//____________________________________________________________________
void LWHistControls::setCleanupOnGetROOT(bool b)
{
  Imp::s_cleanupOnGetROOT = b;
}
 
//____________________________________________________________________
bool LWHistControls::cleanupOnGetROOT()
{
  return Imp::s_cleanupOnGetROOT;
}
 
//____________________________________________________________________
void LWHistControls::releaseAllHeldMemory()
{
  LWPools::cleanup();
}
 
//____________________________________________________________________
bool LWHistControls::hasROOTBackend()
{
  return Imp::s_rootBackend;
}
 
//____________________________________________________________________
void LWHistControls::setROOTBackend(bool b)
{
  Imp::s_rootBackend = b;
}
 
//____________________________________________________________________
long long LWHistControls::getTotalPoolMemAllocated()
{
  return LWPools::getTotalPoolMemAllocated();
}
 
//____________________________________________________________________
long long LWHistControls::getTotalPoolMemUsed()
{
  return LWPools::getTotalPoolMemUsed();
}
 
//____________________________________________________________________
long long LWHistControls::getMemUnusedButAllocatedInPools()
{
  return getTotalPoolMemAllocated()-getTotalPoolMemUsed();
}
 
//____________________________________________________________________
double LWHistControls::poolWasteFraction()
{
  long long l(getTotalPoolMemAllocated());
  return l ? 1.0-getTotalPoolMemUsed()*1.0/l : 0;
}