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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
// This test exercises xdmf3 reading and writing in parallel.
//
#include <vtk_mpi.h>
#include "vtkMPICommunicator.h"
#include "vtkMPIController.h"
#include "vtkNew.h"
#include "vtkObjectFactory.h"
#include "vtkProcess.h"
#include "vtkSmartPointer.h"
#include "vtkTestUtilities.h"
#include "vtkTesting.h"
#include "vtkXdmf3Reader.h"
#include "vtkXdmf3Writer.h"
#include <vtksys/SystemTools.hxx>
class MyProcess : public vtkProcess
{
public:
static MyProcess* New();
vtkTypeMacro(MyProcess, vtkProcess);
void Execute() override;
void SetArgs(int argc, char* argv[], const std::string& ifname, const std::string& ofname)
{
this->Argc = argc;
this->Argv = argv;
this->InFileName = ifname;
this->OutFileName = ofname;
}
void CreatePipeline()
{
int num_procs = this->Controller->GetNumberOfProcesses();
int my_id = this->Controller->GetLocalProcessId();
this->Reader = vtkXdmf3Reader::New();
this->Reader->SetFileName(this->InFileName.c_str());
if (my_id == 0)
{
cerr << my_id << "/" << num_procs << endl;
cerr << "IFILE " << this->InFileName << endl;
cerr << "OFILE " << this->OutFileName << endl;
}
this->Writer = vtkXdmf3Writer::New();
this->Writer->SetFileName(this->OutFileName.c_str());
this->Writer->SetInputConnection(this->Reader->GetOutputPort());
}
protected:
MyProcess()
{
this->Argc = 0;
this->Argv = nullptr;
}
int Argc;
char** Argv;
std::string InFileName;
std::string OutFileName;
vtkXdmf3Reader* Reader;
vtkXdmf3Writer* Writer;
};
vtkStandardNewMacro(MyProcess);
void MyProcess::Execute()
{
int proc = this->Controller->GetLocalProcessId();
int numprocs = this->Controller->GetNumberOfProcesses();
this->Controller->Barrier();
this->CreatePipeline();
this->Controller->Barrier();
this->Reader->UpdatePiece(proc, numprocs, 0);
this->Writer->Write();
this->Reader->Delete();
this->Writer->Delete();
this->ReturnValue = 1;
}
int TestXdmf3Parallel(int argc, char** argv)
{
// This is here to avoid false leak messages from vtkDebugLeaks when
// using mpich. It appears that the root process which spawns all the
// main processes waits in MPI_Init() and calls exit() when
// the others are done, causing apparent memory leaks for any objects
// created before MPI_Init().
MPI_Init(&argc, &argv);
// Note that this will create a vtkMPIController if MPI
// is configured, vtkThreadedController otherwise.
vtkNew<vtkMPIController> contr;
contr->Initialize(&argc, &argv, 1);
int numProcs = contr->GetNumberOfProcesses();
if (numProcs < 2)
{
cout << "This test requires at least 2 processes" << endl;
return EXIT_FAILURE;
}
vtkMultiProcessController::SetGlobalController(contr);
vtkTesting* testHelper = vtkTesting::New();
testHelper->AddArguments(argc, const_cast<const char**>(argv));
std::string datadir = testHelper->GetDataRoot();
std::string ifile = datadir + "/Data/XDMF/Iron/Iron_Protein.ImageData.xmf";
std::string tempdir = testHelper->GetTempDirectory();
tempdir = tempdir + "/XDMF";
vtksys::SystemTools::MakeDirectory(tempdir.c_str());
std::string ofile = tempdir + "/Iron_Protein.ImageData.xmf";
testHelper->Delete();
// allow caller to use something else
for (int i = 0; i < argc; i++)
{
if (!strncmp(argv[i], "--file=", 11))
{
ifile = argv[i] + 11;
}
}
MyProcess* p = MyProcess::New();
p->SetArgs(argc, argv, ifile, ofile);
contr->SetSingleProcessObject(p);
contr->SingleMethodExecute();
int retVal = p->GetReturnValue();
p->Delete();
contr->Finalize();
vtkMultiProcessController::SetGlobalController(nullptr);
if (retVal)
{
// test passed, remove the files we wrote
vtksys::SystemTools::RemoveADirectory(tempdir);
}
return !retVal;
}
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