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/*
* Copyright (C) 1998 NCSA
* All rights reserved.
*
* Programmer: Robb Matzke <matzke@llnl.gov>
* Wednesday, April 8, 1998
*/
#include <assert.h>
#include <ctype.h>
#include <hdf5.h>
#include <math.h>
#include <stdlib.h>
#include <H5private.h> /*needed for HDfprintf() */
#define FNAME "big%05d.h5"
#define WRT_N 50
#define WRT_SIZE 4*1024
#define FAMILY_SIZE 1024*1024*1024
static hsize_t
randll (hsize_t limit)
{
hsize_t acc = rand ();
acc *= rand ();
return acc % limit;
}
/*-------------------------------------------------------------------------
* Function: main
*
* Purpose: Creates a *big* dataset.
*
* Return: Success:
*
* Failure:
*
* Programmer: Robb Matzke
* Wednesday, April 8, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static void
writer (int wrt_n)
{
hsize_t size1[4] = {8, 1024, 1024, 1024};
hsize_t size2[1] = {8589934592LL};
hssize_t hs_start[1];
hsize_t hs_size[1];
hid_t plist, file, space1, space2, mem_space, d1, d2;
int *buf = malloc (sizeof(int) * WRT_SIZE);
int i, j;
/*
* Make sure that `hsize_t' is large enough to represent the entire data
* space.
*/
assert (sizeof(hsize_t)>4);
/*
* We might be on a machine that has 32-bit files, so create an HDF5 file
* which is a family of files. Each member of the family will be 1GB
*/
plist = H5Pcreate (H5P_FILE_ACCESS);
H5Pset_family (plist, FAMILY_SIZE, H5P_DEFAULT);
file = H5Fcreate (FNAME, H5F_ACC_TRUNC, H5P_DEFAULT, plist);
H5Pclose (plist);
/* Create simple data spaces according to the size specified above. */
space1 = H5Screate_simple (4, size1, size1);
space2 = H5Screate_simple (1, size2, size2);
/* Create the datasets */
d1 = H5Dcreate (file, "d1", H5T_NATIVE_INT, space1, H5P_DEFAULT);
d2 = H5Dcreate (file, "d2", H5T_NATIVE_INT, space2, H5P_DEFAULT);
/* Write some things to them randomly */
hs_size[0] = WRT_SIZE;
mem_space = H5Screate_simple (1, hs_size, hs_size);
for (i=0; i<wrt_n; i++) {
hs_start[0] = randll (size2[0]);
HDfprintf (stdout, "#%03d 0x%016Hx\n", i, hs_start[0]);
H5Sset_hyperslab (space2, hs_start, hs_size, NULL);
for (j=0; j<WRT_SIZE; j++) {
buf[j] = i+1;
}
H5Dwrite (d2, H5T_NATIVE_INT, mem_space, space2, H5P_DEFAULT, buf);
}
H5Dclose (d1);
H5Dclose (d2);
H5Sclose (mem_space);
H5Sclose (space1);
H5Sclose (space2);
H5Fclose (file);
free (buf);
}
/*-------------------------------------------------------------------------
* Function: reader
*
* Purpose: Reads some data from random locations in the dataset.
*
* Return: void
*
* Programmer: Robb Matzke
* Friday, April 10, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static void
reader (const char *script_name)
{
FILE *script;
hid_t plist, file, mspace, fspace, d2;
char ln[64], *s;
hssize_t hs_offset[1];
hsize_t hs_size[1] = {WRT_SIZE};
int *buf = malloc (sizeof(int) * WRT_SIZE);
int i, j, zero, wrong;
/* Open script file */
script = fopen (script_name, "r");
/* Open HDF5 file */
plist = H5Pcreate (H5P_FILE_ACCESS);
H5Pset_family (plist, FAMILY_SIZE, H5P_DEFAULT);
file = H5Fopen (FNAME, H5F_ACC_RDONLY, plist);
H5Pclose (plist);
/* Open the dataset */
d2 = H5Dopen (file, "d2");
fspace = H5Dget_space (d2);
/* Describe `buf' */
mspace = H5Screate_simple (1, hs_size, hs_size);
/* Read each region */
while (fgets (ln, sizeof(ln), script)) {
if ('#'!=ln[0]) break;
i = (int)strtol (ln+1, &s, 10);
hs_offset[0] = HDstrtoll (s, NULL, 0);
HDfprintf (stdout, "#%03d 0x%016Hx", i, hs_offset[0]);
fflush (stdout);
H5Sset_hyperslab (fspace, hs_offset, hs_size, NULL);
H5Dread (d2, H5T_NATIVE_INT, mspace, fspace, H5P_DEFAULT, buf);
/* Check */
for (j=zero=wrong=0; j<WRT_SIZE; j++) {
if (0==buf[j]) zero++;
else if (buf[j]!=i+1) wrong++;
}
if (zero) {
printf (" *FAILED* (%d zeros)\n", zero);
} else if (wrong) {
printf (" *SKIPPED* (possible overlap with another region)\n");
} else {
printf (" PASSED\n");
}
}
H5Dclose (d2);
H5Sclose (mspace);
H5Sclose (fspace);
H5Fclose (file);
free (buf);
fclose (script);
}
/*-------------------------------------------------------------------------
* Function: main
*
* Purpose:
*
* Return: Success:
*
* Failure:
*
* Programmer: Robb Matzke
* Friday, April 10, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
int
main (int argc, char *argv[])
{
if (1==argc) {
writer (WRT_N);
} else if (isdigit (argv[1][0])) {
writer ((int)strtol(argv[1], NULL, 0));
} else {
reader (argv[1]);
}
return 0;
}
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