// @HEADER
//
// ***********************************************************************
//
//        MueLu: A package for multigrid based preconditioning
//                  Copyright 2012 Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright
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// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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// Questions? Contact
//                    Jonathan Hu       (jhu@sandia.gov)
//                    Andrey Prokopenko (aprokop@sandia.gov)
//                    Ray Tuminaro      (rstumin@sandia.gov)
//
// ***********************************************************************
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// @HEADER
#include "Teuchos_UnitTestHarness.hpp"
#include "MueLu_TestHelpers.hpp"
#include "MueLu_Version.hpp"

#include "MueLu_Memory.hpp"

namespace {

TEUCHOS_UNIT_TEST(Memory, Basic) {
  using namespace MueLu::MemUtils;

  //    int n = 100000000;
  int n = 10000;

  out << "version: " << MueLu::Version() << std::endl;

  out << "Init:" << std::endl;

  out << " PrintMemoryUsage()" << PrintMemoryUsage() << std::endl;
  out << " PrintMemoryInfo()" << PrintMemoryInfo() << std::endl;

  out << "Allocation of " << n << " double (sizeof(double=" << sizeof(double) << "), total=" << sizeof(double) * n / (1024 * 1024) << " MB)" << std::endl;

  double* array = new double[n];

  // Use array to be sure that it will be allocated;
  for (int i = 0; i < n; i++)
    array[i] = i;

  out << " PrintMemoryUsage()" << PrintMemoryUsage() << std::endl;
  out << " PrintMemoryInfo()" << PrintMemoryInfo() << std::endl;

  out << "Delete:" << std::endl;

  delete[] array;

  out << " PrintMemoryUsage()" << PrintMemoryUsage() << std::endl;
  out << " PrintMemoryInfo()" << PrintMemoryInfo() << std::endl;

  success = true;
}

}  // namespace
