vchoi_fork

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

 * Copyright by The HDF Group.                                               *

 * Copyright by the Board of Trustees of the University of Illinois.         *

 * All rights reserved.                                                      *

 *                                                                           *

 * This file is part of HDF5.  The full HDF5 copyright notice, including     *

 * terms governing use, modification, and redistribution, is contained in    *

 * the files COPYING and Copyright.html.  COPYING can be found at the root   *

 * of the source code distribution tree; Copyright.html can be found at the  *

 * root level of an installed copy of the electronic HDF5 document set and   *

 * is linked from the top-level documents page.  It can also be found at     *

 * http://hdfgroup.org/HDF5/doc/Copyright.html.  If you do not have          *

 * access to either file, you may request a copy from help@hdfgroup.org.     *

 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

​

/*

 * Purpose:

 *

 * This is a module of useful timing functions for performance testing.

 */

​

#include <stdio.h>

#include <stdlib.h>

​

#include "pio_timer.h"

​

#ifdef H5_HAVE_PARALLEL

​

#include <mpi.h>

​

#include "pio_perf.h"

​

/*

 * The number to divide the tv_usec field with to get a nice decimal to add to

 * the number of seconds.

 */

#define MICROSECOND     1000000.0

​

/* global variables */

pio_time   *timer_g;            /* timer: global for stub functions     */

​

/*

 * Function:  sub_time

 * Purpose:   Struct two time values, and return the difference, in microseconds

 *

 *        Note that the function assumes that a > b

 * Programmer: Leon Arber, 1/27/06

 */

static double sub_time(struct timeval* a, struct timeval* b)

{

    return (((double)a->tv_sec +