/*
 * $Id: main.h,v 1.24 2008/09/19 08:09:33 lindahl Exp $
 * 
 *                This source code is part of
 * 
 *                 G   R   O   M   A   C   S
 * 
 *          GROningen MAchine for Chemical Simulations
 * 
 *                        VERSION 3.2.0
 * Written by David van der Spoel, Erik Lindahl, Berk Hess, and others.
 * Copyright (c) 1991-2000, University of Groningen, The Netherlands.
 * Copyright (c) 2001-2004, The GROMACS development team,
 * check out http://www.gromacs.org for more information.

 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
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 */

#ifndef _main_h
#define _main_h

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif


#include <stdio.h>
#include "network.h"

extern int  gmx_parallel_env; /* 1 when running in a parallel environment,
			       * so could also be 1 when mdrun was started
			       * with: mpirun -np 1 
			       */

extern FILE *gmx_log_open(char *fn,const t_commrec *cr,bool bMasterOnly, unsigned long Flags);
/* Open the log file, if necessary (nprocs > 1) the logfile name is
 * communicated around the ring.
 */

extern void gmx_log_close(FILE *fp);
/* Close the log file */

extern void check_multi_int(FILE *log,const gmx_multisim_t *ms,
			    int val,char *name);
/* Check if val is the same on all processors for a mdrun -multi run
 * The string name is used to print to the log file and in a fatal error
 * if the val's don't match.
 */

extern void init_multisystem(t_commrec *cr,int nsim,int nfile,t_filenm fnm[],
			     bool bParFn);
/* Splits the communication into nsim seperate simulations
 * and creates a communication structure between the master
 * these simulations.
 * If bParFn is set, the nodeid is appended to the tpx and each output file.
 */

extern t_commrec *init_par(int *argc,char ***argv_ptr);
/* Initiate the parallel computer. Return the communication record
 * (see network.h). The command line arguments are communicated so that they can be
 * parsed on each processor.
 * Arguments are the number of command line arguments, and a pointer to the
 * array of argument strings.
 */


extern t_commrec *init_cr_nopar(void);
/* Returns t_commrec for non-parallel functionality */

#endif	/* _main_h */
