/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
 * vim:expandtab:shiftwidth=8:tabstop=8:
 */
/******************************************************************************\
*                                                                              *
*        Copyright (c) 2003, The Regents of the University of California       *
*      See the file COPYRIGHT for a complete copyright notice and license.     *
*                                                                              *
\******************************************************************************/

#ifndef _UTILITIES_H
#define _UTILITIES_H

#ifdef HAVE_CONFIG_H
#  include "config.h"
#endif

#include <mpi.h>
#include "ior.h"

extern int numTasksWorld;
extern int rank;
extern int rankOffset;
extern int tasksPerNode;
extern int verbose;
extern MPI_Comm testComm;
extern MPI_Comm mpi_comm_world;
extern FILE * out_logfile;

#ifdef __linux__
#define FAIL(msg) do {                                                   \
        fprintf(out_logfile, "%s: Process %d: FAILED in %s, %s: %s\n",   \
                PrintTimestamp(), rank, __func__,                       \
                msg, strerror(errno));                                   \
        fflush(out_logfile);                                             \
        MPI_Abort(testComm, 1);                                          \
    } while(0)
#else
#define FAIL(msg) do {                                                   \
        fprintf(out_logfile, "%s: Process %d: FAILED at %d, %s: %s\n",   \
                PrintTimestamp(), rank, __LINE__,                       \
                msg, strerror(errno));                                   \
        fflush(out_logfile);                                             \
        MPI_Abort(testComm, 1);                                          \
    } while(0)
#endif

void set_o_direct_flag(int *fd);

char *CurrentTimeString(void);
int Regex(char *, char *);
void ShowFileSystemSize(char *);
void DumpBuffer(void *, size_t);
void SeedRandGen(MPI_Comm);
void SetHints (MPI_Info *, char *);
void ShowHints (MPI_Info *);
int CountTasksPerNode(MPI_Comm comm);

/* Returns -1, if cannot be read  */
int64_t ReadStoneWallingIterations(char * const filename);
void StoreStoneWallingIterations(char * const filename, int64_t count);

void init_clock(void);
double GetTimeStamp(void);
char * PrintTimestamp(); // TODO remove this function

extern double wall_clock_deviation;
extern double wall_clock_delta;
#endif  /* !_UTILITIES_H */