From 94d3e79a8617f88dc0219cfdeedfa3147833719d Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Mon, 24 Jun 2019 14:43:36 +0200
Subject: Initialize at openlb-1-3

---
 src/communication/loadBalancer.hh | 167 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 167 insertions(+)
 create mode 100644 src/communication/loadBalancer.hh

(limited to 'src/communication/loadBalancer.hh')

diff --git a/src/communication/loadBalancer.hh b/src/communication/loadBalancer.hh
new file mode 100644
index 0000000..62b7e06
--- /dev/null
+++ b/src/communication/loadBalancer.hh
@@ -0,0 +1,167 @@
+/*  This file is part of the OpenLB library
+ *
+ *  Copyright (C) 2007, 2014 Mathias Krause, Peter Weisbrod
+ *  E-mail contact: info@openlb.net
+ *  The most recent release of OpenLB can be downloaded at
+ *  <http://www.openlb.net/>
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public
+ *  License along with this program; if not, write to the Free
+ *  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA  02110-1301, USA.
+*/
+
+
+#ifndef LOAD_BALANCER_HH
+#define LOAD_BALANCER_HH
+
+#include "communication/loadBalancer.h"
+
+namespace olb {
+
+
+template<typename T>
+LoadBalancer<T>::LoadBalancer(int size) : _size(size)
+{}
+
+template<typename T>
+LoadBalancer<T>::LoadBalancer(int size, std::map<int,int>& loc, std::vector<int>& glob, std::map<int,int>& rank)
+  : _size(size), _loc(loc), _glob(glob), _rank(rank)
+{}
+
+template<typename T>
+LoadBalancer<T>::~LoadBalancer()
+{}
+
+template<typename T>
+void LoadBalancer<T>::swap(LoadBalancer<T>& loadBalancer)
+{
+  std::swap(_size, loadBalancer._size);
+  _loc.swap(loadBalancer._loc);
+  _glob.swap(loadBalancer._glob);
+  _rank.swap(loadBalancer._rank);
+}
+
+template<typename T>
+bool LoadBalancer<T>::isLocal(const int& glob)
+{
+  return rank(glob) == singleton::mpi().getRank();
+}
+
+template<typename T>
+int LoadBalancer<T>::loc(const int& glob)
+{
+  return _loc[glob];
+}
+
+template<typename T>
+int LoadBalancer<T>::loc(int glob) const
+{
+  std::map<int,int>::const_iterator iter = _loc.find(glob);
+  return iter->second;
+}
+
+template<typename T>
+int LoadBalancer<T>::glob(int loc) const
+{
+  return _glob[loc];
+}
+
+template<typename T>
+int LoadBalancer<T>::rank(const int& glob)
+{
+  return _rank[glob];
+}
+
+template<typename T>
+int LoadBalancer<T>::rank(int glob) const
+{
+  std::map<int,int>::const_iterator iter = _rank.find(glob);
+  return iter->second;
+}
+
+template<typename T>
+int LoadBalancer<T>::size() const
+{
+  return _size;
+}
+
+template<typename T>
+bool LoadBalancer<T>::operator==(const LoadBalancer<T>& rhs) const
+{
+  return _size == rhs._size &&
+         _loc == rhs._loc &&
+         _glob == rhs._glob &&
+         _rank == rhs._rank;
+}
+
+
+template<typename T>
+size_t LoadBalancer<T>::getNblock() const
+{
+  return   4     // _size, plus vector length of _loc, _glob and _rank
+           + _loc.size()
+           + _rank.size()
+           + _glob.size();
+}
+
+
+template<typename T>
+size_t LoadBalancer<T>::getSerializableSize() const
+{
+  return   sizeof(int)         // _size
+           + 3 * sizeof(size_t)  // vector length of _loc, _glob and _rank
+           + _loc.size() * sizeof(std::pair<int, int>)
+           + _rank.size() * sizeof(std::pair<int, int>)
+           + _glob.size() * sizeof(int);
+}
+
+
+template<typename T>
+bool* LoadBalancer<T>::getBlock(std::size_t iBlock, std::size_t& sizeBlock, bool loadingMode)
+{
+  std::size_t currentBlock = 0;
+  size_t sizeBufferIndex = 0;
+  bool* dataPtr = nullptr;
+
+  this->registerVar<int>            (iBlock, sizeBlock, currentBlock, dataPtr, _size);
+  this->registerMap<int, int>       (iBlock, sizeBlock, currentBlock, sizeBufferIndex, dataPtr, _loc, loadingMode);
+  this->registerStdVectorOfVars<int>(iBlock, sizeBlock, currentBlock, sizeBufferIndex, dataPtr, _glob, loadingMode);
+  this->registerMap<int, int>       (iBlock, sizeBlock, currentBlock, sizeBufferIndex, dataPtr, _rank, loadingMode);
+
+  return dataPtr;
+}
+
+
+template<typename T>
+void LoadBalancer<T>::print(bool multiOutput) const
+{
+  OstreamManager clout(std::cout,"LoadBalancer");
+  clout.setMultiOutput(multiOutput);
+  for (unsigned i = 0; i < this->_glob.size(); i++) {
+    clout << "glob[" << i << "]=" << this->_glob[i] << std::endl;
+  }
+  for (auto it = this->_loc.cbegin(); it != this->_loc.cend();
+       it++) {
+    clout << "loc[" << (*it).first << "]=" << (*it).second << std::endl;
+  }
+  for (auto it = this->_rank.cbegin(); it != this->_rank.cend();
+       it++) {
+    clout << "rank[" << (*it).first << "]=" << (*it).second << std::endl;
+  }
+  clout.setMultiOutput(false);
+}
+
+
+}  // namespace olb
+#endif
-- 
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