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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
/*=========================================================================
Program: Visualization Toolkit
Module: TestAtomic.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "itkAtomicInt.h"
#include "itkMultiThreader.h"
#include "itkObject.h"
#include <iostream>
namespace
{
int Total = 0;
itk::uint64_t Total64 = 0;
itk::AtomicInt<itk::uint32_t> TotalAtomic(0);
itk::AtomicInt<itk::uint64_t> TotalAtomic64(0);
const int Target = 1000000;
int Values32[Target+2];
int Values64[Target+2];
int NumThreads = 5;
itk::Object::Pointer AnObject;
}
ITK_THREAD_RETURN_TYPE MyFunction(void *)
{
for (int i=0; i<Target/NumThreads; i++)
{
Total++;
int idx = ++TotalAtomic;
Values32[idx] = 1;
Total64++;
idx = ++TotalAtomic64;
Values64[idx] = 1;
AnObject->Modified();
}
return ITK_THREAD_RETURN_VALUE;
}
ITK_THREAD_RETURN_TYPE MyFunction2(void *)
{
for (int i=0; i<Target/NumThreads; i++)
{
--TotalAtomic;
--TotalAtomic64;
}
return ITK_THREAD_RETURN_VALUE;
}
ITK_THREAD_RETURN_TYPE MyFunction3(void *)
{
for (int i=0; i<Target/NumThreads; i++)
{
int idx = TotalAtomic += 1;
Values32[idx]++;
idx = TotalAtomic64 += 1;
Values64[idx]++;
}
return ITK_THREAD_RETURN_VALUE;
}
ITK_THREAD_RETURN_TYPE MyFunction4(void *)
{
for (int i=0; i<Target/NumThreads; i++)
{
TotalAtomic++;
TotalAtomic += 1;
TotalAtomic--;
TotalAtomic -= 1;
TotalAtomic64++;
TotalAtomic64 += 1;
TotalAtomic64--;
TotalAtomic64 -= 1;
}
return ITK_THREAD_RETURN_VALUE;
}
int itkAtomicIntTest(int, char*[])
{
Total = 0;
TotalAtomic = 0;
Total64 = 0;
TotalAtomic64 = 0;
AnObject = itk::Object::New();
int beforeMTime = AnObject->GetMTime();
for (int i=0; i<Target; i++)
{
Values32[i] = 0;
Values64[i] = 0;
}
itk::MultiThreader::Pointer mt = itk::MultiThreader::New();
mt->SetSingleMethod(MyFunction, NULL);
mt->SetNumberOfThreads(NumThreads);
mt->SingleMethodExecute();
mt->SetSingleMethod(MyFunction2, NULL);
mt->SingleMethodExecute();
mt->SetSingleMethod(MyFunction3, NULL);
mt->SingleMethodExecute();
// Making sure that atomic incr returned unique
// values each time. We expect all numbers from
// 1 to Target-1 to be 2.
if (Values32[0] != 0)
{
std::cout << "Expecting Values32[0] to be 0. Got "
<< Values32[0] << std::endl;
return 1;
}
if (Values64[0] != 0)
{
std::cout << "Expecting Values64[0] to be 0. Got "
<< Values64[0] << std::endl;
return 1;
}
for (int i=1; i<Target; i++)
{
if (Values32[i] != 2)
{
std::cout << "Expecting Values32[" << i << "] to be 2. Got "
<< Values32[i] << std::endl;
return 1;
}
if (Values64[i] != 2)
{
std::cout << "Expecting Values64[" << i << "] to be 2. Got "
<< Values64[i] << std::endl;
return 1;
}
}
mt->SetSingleMethod(MyFunction4, NULL);
mt->SingleMethodExecute();
std::cout << Total << " " << TotalAtomic.load() << std::endl;
std::cout << Total64 << " " << TotalAtomic64.load() << std::endl;
std::cout << "MTime: " << AnObject->GetMTime() << std::endl;
if (TotalAtomic.load() != static_cast<itk::uint32_t>(Target) )
{
return 1;
}
if (TotalAtomic64.load() != static_cast<itk::uint64_t>(Target) )
{
return 1;
}
if (AnObject->GetReferenceCount() != 1)
{
return 1;
}
if ((int)AnObject->GetMTime() != Target + beforeMTime + 2 )
{
return 1;
}
return 0;
}
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