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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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.
*
*=========================================================================*/
#define ITK_LEGACY_TEST // so deprecation warnings are not triggered by this test
#include "itkPlatformMultiThreader.h"
#include "itkMutexLock.h"
#include "itkTimeProbe.h"
#include "itkConfigure.h"
#include "itksys/SystemTools.hxx"
struct SharedThreadData
{
int numberOfLoop;
itk::MutexLock::Pointer sharedMutex;
};
void *
ThreadFunction(void * ptr)
{
// Retrieve shared thread data and user data
auto * workUnitInfo = static_cast<itk::PlatformMultiThreader::WorkUnitInfo *>(ptr);
itk::ThreadIdType localthreadId = workUnitInfo->WorkUnitID;
auto * localThreadData = static_cast<SharedThreadData *>(workUnitInfo->UserData);
int localnumberOfLoop = localThreadData->numberOfLoop;
itk::MutexLock::Pointer localMutex = localThreadData->sharedMutex;
for (int i = 0; i < localnumberOfLoop; ++i)
{
localMutex->Lock();
std::cerr << "Thread #" << localthreadId << ":: counter = " << i << std::endl;
localMutex->Unlock();
}
localMutex->Lock();
std::cerr << "Thread #" << localthreadId << " is done." << std::endl;
localMutex->Unlock();
return nullptr;
}
int
itkSpawnThreadTest(int argc, char * argv[])
{
int loop = 100;
if (argc > 1)
{
const int nt = std::stoi(argv[1]);
if (nt > 1)
{
loop = nt;
}
}
itk::PlatformMultiThreader::Pointer threader = itk::PlatformMultiThreader::New();
itk::MutexLock::Pointer mutexlock = itk::MutexLock::New();
if (threader.IsNull() || mutexlock.IsNull())
{
return EXIT_FAILURE;
}
SharedThreadData threadData;
threadData.numberOfLoop = loop;
threadData.sharedMutex = mutexlock;
int id1 = threader->SpawnThread((itk::ThreadFunctionType)&ThreadFunction, &threadData);
int id2 = threader->SpawnThread((itk::ThreadFunctionType)&ThreadFunction, &threadData);
int id3 = threader->SpawnThread((itk::ThreadFunctionType)&ThreadFunction, &threadData);
int id4 = threader->SpawnThread((itk::ThreadFunctionType)&ThreadFunction, &threadData);
int id5 = threader->SpawnThread((itk::ThreadFunctionType)&ThreadFunction, &threadData);
int id6 = threader->SpawnThread((itk::ThreadFunctionType)&ThreadFunction, &threadData);
int id7 = threader->SpawnThread((itk::ThreadFunctionType)&ThreadFunction, &threadData);
for (int i = 0; i < threadData.numberOfLoop; ++i)
{
mutexlock->Lock();
std::cerr << "Main Thread:: counter = " << i << std::endl;
mutexlock->Unlock();
}
mutexlock->Lock();
std::cerr << "Main Thread is done." << std::endl;
mutexlock->Unlock();
// wait for the threads
threader->TerminateThread(id1);
threader->TerminateThread(id2);
threader->TerminateThread(id3);
threader->TerminateThread(id4);
threader->TerminateThread(id5);
threader->TerminateThread(id6);
threader->TerminateThread(id7);
std::cerr << "All theads are stopped ...." << std::endl;
return EXIT_SUCCESS;
}
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