processor.cc

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#include "processor.h"
#include <iostream>
 
using namespace std;
 
 
int processor::nInst;
 
 
processor::processor() {
 
#ifdef DOMPI
 
    //----------- set MPI Stuff (if on)
 
    if((++nInst)==1) {                 // Only ever call MPI_* once
        int fake_argc = 0;
        char** fake_argv;
        MPI_Init(&fake_argc, &fake_argv);
        MPI_Comm_rank(MPI_COMM_WORLD, &myid);
        MPI_Comm_size(MPI_COMM_WORLD, &nproc);
    }
    if(nInst > 1)
        cout << endl << "****** WARNING, more than one processor class object" << endl;
 
    if(myid==0)
        cout << "\n# MPI IS ON" << "; Nprocs = " << nproc << endl;
    MPI_Barrier(MPI_COMM_WORLD);
 
 
#else
    myid  = 0;
    nproc = 1;
 
#endif
 
}
 
 
 
processor::~processor() {
 
#ifdef DOMPI
 
    if((--nInst)==0)             // Only ever finalize mpi once
        MPI_Finalize();
 
#endif
}