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/*=========================================================================
Program: Visualization Toolkit
Module: TestProcess.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.
=========================================================================*/
// This test covers the vtkProcess abstract class.
#include <mpi.h>
#include "vtkProcess.h"
#include "vtkMPIController.h"
#include "vtkObjectFactory.h"
namespace
{
class MyProcess : public vtkProcess
{
public:
static MyProcess *New();
vtkTypeMacro(MyProcess, vtkProcess);
virtual void Execute();
void SetArgs(int anArgc,
char *anArgv[]);
protected:
MyProcess();
int Argc;
char **Argv;
};
vtkStandardNewMacro(MyProcess);
MyProcess::MyProcess()
{
this->Argc=0;
this->Argv=0;
}
void MyProcess::SetArgs(int anArgc,
char *anArgv[])
{
this->Argc=anArgc;
this->Argv=anArgv;
}
void MyProcess::Execute()
{
// multiprocess logic
int numProcs=this->Controller->GetNumberOfProcesses();
int me=this->Controller->GetLocalProcessId();
cout << "numProcs=" << numProcs << " me=" << me << endl;
cout << "executable=" << this->Argv[0] << endl;
cout << "argc=" << this->Argc << endl;
const int MY_RETURN_VALUE_MESSAGE=0x11;
if(me==0)
{
// root node
this->ReturnValue=0;
int i=1;
while(i<numProcs)
{
this->Controller->Send(&this->ReturnValue,1,i,MY_RETURN_VALUE_MESSAGE);
++i;
}
}
else
{
// satellites
this->Controller->Receive(&this->ReturnValue,1,0,MY_RETURN_VALUE_MESSAGE);
}
}
}
int TestProcess(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.
vtkMPIController *c=vtkMPIController::New();
c->Initialize(&argc,&argv,1);
int retVal = 1;
vtkMultiProcessController::SetGlobalController(c);
int numProcs =c->GetNumberOfProcesses();
int me=c->GetLocalProcessId();
if(numProcs != 2)
{
if (me == 0)
{
cout << "DistributedData test requires 2 processes" << endl;
}
c->Delete();
return retVal;
}
if (!c->IsA("vtkMPIController"))
{
if (me == 0)
{
cout << "TestProcess test requires MPI" << endl;
}
c->Delete();
return retVal;
}
MyProcess *p=MyProcess::New();
p->SetArgs(argc,argv);
c->SetSingleProcessObject(p);
c->SingleMethodExecute();
retVal=p->GetReturnValue();
p->Delete();
c->Finalize();
c->Delete();
return retVal;
}
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