source: trunk/examples/extended/parallel/MPI/mpi_interface/src/G4VMPIsession.cc @ 1279

//
// ********************************************************************
// * License and Disclaimer                                           *
// *                                                                  *
// * The  Geant4 software  is  copyright of the Copyright Holders  of *
// * the Geant4 Collaboration.  It is provided  under  the terms  and *
// * conditions of the Geant4 Software License,  included in the file *
// * LICENSE and available at  http://cern.ch/geant4/license .  These *
// * include a list of copyright holders.                             *
// *                                                                  *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work  make  any representation or  warranty, express or implied, *
// * regarding  this  software system or assume any liability for its *
// * use.  Please see the license in the file  LICENSE  and URL above *
// * for the full disclaimer and the limitation of liability.         *
// *                                                                  *
// * This  code  implementation is the result of  the  scientific and *
// * technical work of the GEANT4 collaboration.                      *
// * By using,  copying,  modifying or  distributing the software (or *
// * any work based  on the software)  you  agree  to acknowledge its *
// * use  in  resulting  scientific  publications,  and indicate your *
// * acceptance of all terms of the Geant4 Software license.          *
// ********************************************************************
//
// $Id: G4VMPIsession.cc,v 1.1 2007/11/16 14:05:41 kmura Exp $
// $Name:  $
//
// ====================================================================
//   G4VMPIsession.cc
//
//                                         2007 Q
// ====================================================================
#include "G4VMPIsession.hh"
#include "G4MPImanager.hh"
#include "G4UImanager.hh"
#include "G4UIcommand.hh"

// ====================================================================
//
// class description
//
// ====================================================================

//////////////////////////////
G4VMPIsession::G4VMPIsession()
  : G4VBasicShell()
//////////////////////////////
{
  // MPI
  g4MPI= G4MPImanager::GetManager();

  isMaster= g4MPI-> IsMaster();
  isSlave= g4MPI-> IsSlave();
  rank= g4MPI-> GetRank();
}

///////////////////////////////
G4VMPIsession::~G4VMPIsession()
///////////////////////////////
{
}


////////////////////////////////////////////////
G4bool G4VMPIsession::GetHelpChoice(G4int& aval)
////////////////////////////////////////////////
{
  G4cin >> aval;
  if(!G4cin.good()){
    G4cin.clear();
    G4cin.ignore(30,'\n');
    return false;
  }
  return true;
}


//////////////////////////////
void G4VMPIsession::ExitHelp()
//////////////////////////////
{
  char temp[100];
  G4cin.getline(temp, 100);
}


///////////////////////////////////////////////
void G4VMPIsession::PauseSessionStart(G4String)
///////////////////////////////////////////////
{
}


///////////////////////////////////////////////////
G4int G4VMPIsession::ExecCommand(G4String aCommand)
///////////////////////////////////////////////////
{
  if(aCommand.length()<2) return fCommandSucceeded;

  G4UImanager* UI= G4UImanager::GetUIpointer();
  G4int returnVal= 0;

  G4String command= BypassCommand(aCommand);
  
  // "/mpi/beamOn is threaded out.
  if(command(0,11) == "/mpi/beamOn") {
    g4MPI-> ExecuteBeamOnThread(aCommand);
    returnVal= fCommandSucceeded;
  } else if(command(0,12) == "/mpi/.beamOn") { // care for beamOn
    G4bool threadStatus= g4MPI-> CheckThreadStatus();
    if (threadStatus) { // still /run/beamOn is active
      if(isMaster) {
        G4cout << "G4MPIsession:: beamOn is still running." << G4endl;
      }
      returnVal= fCommandSucceeded;
    } else {
      returnVal = UI-> ApplyCommand(command);
    }
  } else { // normal command
    returnVal = UI-> ApplyCommand(command);
  }

  G4int paramIndex = returnVal % 100;
  // 0 - 98 : paramIndex-th parameter is invalid
  // 99     : convination of parameters is invalid
  G4int commandStatus = returnVal - paramIndex;

  G4UIcommand* cmd = 0;
  if(commandStatus!=fCommandSucceeded) {
    cmd = FindCommand(command);
  }

  switch(commandStatus) {
  case fCommandSucceeded:
    break;
  case fCommandNotFound:
    G4cerr << "command <" << UI->SolveAlias(command)
           << "> not found" << G4endl;
    break;
  case fIllegalApplicationState:
    G4cerr << "illegal application state -- command refused" << G4endl;
    break;
  case fParameterOutOfRange:
    // ...
    break;
  case fParameterOutOfCandidates:
    G4cerr << "Parameter is out of candidate list (index "
           << paramIndex << ")" << G4endl;
    G4cerr << "Candidates : "
           << cmd->GetParameter(paramIndex)-> GetParameterCandidates()
           << G4endl;
    break;
  case fParameterUnreadable:
    G4cerr << "Parameter is wrong type and/or is not omittable (index "
           << paramIndex << ")" << G4endl;
    break;
  case fAliasNotFound:
    // ...
    break;
  default:
    G4cerr << "command refused (" << commandStatus << ")" << G4endl;
  }

  return returnVal;
}


//////////////////////////////////////////////////////////////////////
G4String G4VMPIsession::TruncateCommand(const G4String& command) const
//////////////////////////////////////////////////////////////////////
{
  // replace "//" with "/" in G4command
  G4String acommand= command;
  G4String strarg;

  str_size iarg= acommand.find(' ');
  if(iarg != G4String::npos) {
    strarg= acommand(iarg, acommand.size()-iarg);
    acommand= acommand(0,iarg);
  }

  str_size idx;
  while( (idx= acommand.find("//")) != G4String::npos)  {
    G4String command1= acommand(0,idx+1); 
    G4String command2= acommand(idx+2, acommand.size()-idx-2);
    acommand= command1 + command2;
  }

  acommand += strarg;

  return acommand;
}


////////////////////////////////////////////////////////////////////
G4String G4VMPIsession::BypassCommand(const G4String& command) const
////////////////////////////////////////////////////////////////////
{
  // bypass some commands
  // /run/beamon -> /mpi/.beamOn
  // /control/execute -> /mpi/execute

  G4String acommand= command;

  if(acommand(0,11) == "/run/beamOn") {
    if(g4MPI-> GetVerbose()>0 && isMaster) {
      G4cout << "/run/beamOn is overridden by /mpi/.beamOn" 
             << G4endl;
    }

    acommand= "/mpi/.beamOn ";

    G4String strarg= "";
    G4bool qget= false;
    G4bool qdone= false;

    for (str_size idx=10; idx< command.size(); idx++) {
      if(command[idx] == ' ' || command[idx] == '\011') {
        qget= true;
        if(qdone) break;
        continue;
      }

      if(qget) {
        strarg+= command[idx];
        qdone= true;
      }
    }
    acommand += strarg;
  }  

  if(acommand(0,16) == "/control/execute") {
    if(g4MPI-> GetVerbose()>0 && isMaster) {
      G4cout << "/control/execute is overridden by /mpi/execute" 
             << G4endl;
    }
    
    acommand.replace(0, 16, "/mpi/execute    ");
  }

  return acommand;
}

// ====================================================================

//////////////////////////////////////////////////////
G4int G4VMPIsession::ReceiveG4cout(G4String coutString)
//////////////////////////////////////////////////////
{
  g4MPI-> Print(coutString);
  return 0;
}


//////////////////////////////////////////////////////
G4int G4VMPIsession::ReceiveG4cerr(G4String cerrString)
//////////////////////////////////////////////////////
{
  g4MPI-> Print(cerrString);
  return 0;
}