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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-FileCopyrightText: Copyright (c) Sandia Corporation
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkProcessGroup.h"
#include "vtkCommunicator.h"
#include "vtkMultiProcessController.h"
#include "vtkObjectFactory.h"
#include <algorithm>
//------------------------------------------------------------------------------
VTK_ABI_NAMESPACE_BEGIN
vtkStandardNewMacro(vtkProcessGroup);
//------------------------------------------------------------------------------
vtkProcessGroup::vtkProcessGroup()
{
this->Communicator = nullptr;
this->ProcessIds = nullptr;
this->NumberOfProcessIds = 0;
}
vtkProcessGroup::~vtkProcessGroup()
{
this->SetCommunicator(nullptr);
}
void vtkProcessGroup::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "Communicator: " << this->Communicator << endl;
os << indent << "ProcessIds:";
for (int i = 0; i < this->NumberOfProcessIds; i++)
{
os << " " << this->ProcessIds[i];
}
os << endl;
}
//------------------------------------------------------------------------------
void vtkProcessGroup::Initialize(vtkMultiProcessController* controller)
{
this->Initialize(controller->GetCommunicator());
}
void vtkProcessGroup::Initialize(vtkCommunicator* communicator)
{
this->SetCommunicator(communicator);
this->NumberOfProcessIds = this->Communicator->GetNumberOfProcesses();
for (int i = 0; i < this->NumberOfProcessIds; i++)
{
this->ProcessIds[i] = i;
}
}
//------------------------------------------------------------------------------
void vtkProcessGroup::SetCommunicator(vtkCommunicator* communicator)
{
// Adjust ProcessIds array.
int* newProcessIds = nullptr;
int newNumberOfProcessIds = 0;
if (communicator)
{
newProcessIds = new int[communicator->GetNumberOfProcesses()];
newNumberOfProcessIds = communicator->GetNumberOfProcesses();
if (newNumberOfProcessIds > this->NumberOfProcessIds)
{
newNumberOfProcessIds = this->NumberOfProcessIds;
}
}
if (this->ProcessIds)
{
std::copy(newProcessIds, newProcessIds + newNumberOfProcessIds, this->ProcessIds);
}
if (this->Communicator)
delete[] this->ProcessIds;
this->ProcessIds = newProcessIds;
this->NumberOfProcessIds = newNumberOfProcessIds;
vtkSetObjectBodyMacro(Communicator, vtkCommunicator, communicator);
}
//------------------------------------------------------------------------------
int vtkProcessGroup::GetLocalProcessId()
{
if (this->Communicator)
{
return this->FindProcessId(this->Communicator->GetLocalProcessId());
}
else
{
return -1;
}
}
//------------------------------------------------------------------------------
int vtkProcessGroup::FindProcessId(int processId)
{
for (int i = 0; i < this->NumberOfProcessIds; i++)
{
if (this->ProcessIds[i] == processId)
return i;
}
return -1;
}
//------------------------------------------------------------------------------
int vtkProcessGroup::AddProcessId(int processId)
{
int loc = this->FindProcessId(processId);
if (loc < 0)
{
loc = this->NumberOfProcessIds++;
this->ProcessIds[loc] = processId;
this->Modified();
}
return loc;
}
//------------------------------------------------------------------------------
int vtkProcessGroup::RemoveProcessId(int processId)
{
int loc = this->FindProcessId(processId);
if (loc < 0)
return 0;
this->NumberOfProcessIds--;
for (int i = loc; i < this->NumberOfProcessIds; i++)
{
this->ProcessIds[i] = this->ProcessIds[i + 1];
}
this->Modified();
return 1;
}
//------------------------------------------------------------------------------
void vtkProcessGroup::RemoveAllProcessIds()
{
if (this->NumberOfProcessIds > 0)
{
this->NumberOfProcessIds = 0;
this->Modified();
}
}
//------------------------------------------------------------------------------
void vtkProcessGroup::Copy(vtkProcessGroup* group)
{
this->SetCommunicator(group->Communicator);
this->NumberOfProcessIds = group->NumberOfProcessIds;
for (int i = 0; i < this->NumberOfProcessIds; i++)
{
this->ProcessIds[i] = group->ProcessIds[i];
}
}
VTK_ABI_NAMESPACE_END
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