summaryrefslogtreecommitdiffstats
path: root/testpar/t_pflush1.c
blob: 7e90cd2224e606b48a2055ef97ac5fd8df0daae8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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 COPYING file, which can be found at the root of the source code       *
 * distribution tree, or in https://www.hdfgroup.org/licenses.               *
 * If you do not have access to either file, you may request a copy from     *
 * help@hdfgroup.org.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*
 * Programmer:  Leon Arber  <larber@uiuc.edu>
 *              Sept. 28, 2006.
 *
 * Purpose:     This is the first half of a two-part test that makes sure
 *              that a file can be read after a parallel application crashes
 *              as long as the file was flushed first.  We simulate a crash by
 *              calling _exit() since this doesn't flush HDF5 caches but
 *              still exits with success.
 */
#include "h5test.h"

const char *FILENAME[] = {"flush", "noflush", NULL};

static int *data_g = NULL;

#define N_GROUPS 100

/*-------------------------------------------------------------------------
 * Function:    create_test_file
 *
 * Purpose:     Creates the file used in part 1 of the test
 *
 * Return:      Success:    A valid file ID
 *              Failure:    H5I_INVALID_HID
 *
 * Programmer:  Leon Arber
 *              Sept. 26, 2006
 *
 *-------------------------------------------------------------------------
 */
static hid_t
create_test_file(char *name, size_t name_length, hid_t fapl_id)
{
    hid_t   fid           = H5I_INVALID_HID;
    hid_t   dcpl_id       = H5I_INVALID_HID;
    hid_t   sid           = H5I_INVALID_HID;
    hid_t   did           = H5I_INVALID_HID;
    hid_t   top_level_gid = H5I_INVALID_HID;
    hid_t   gid           = H5I_INVALID_HID;
    hid_t   dxpl_id       = H5I_INVALID_HID;
    hsize_t dims[2]       = {100, 100};
    hsize_t chunk_dims[2] = {5, 5};
    hsize_t i, j;

    if ((fid = H5Fcreate(name, H5F_ACC_TRUNC, H5P_DEFAULT, fapl_id)) < 0)
        goto error;

    /* Create a chunked dataset */
    if ((dcpl_id = H5Pcreate(H5P_DATASET_CREATE)) < 0)
        goto error;
    if (H5Pset_chunk(dcpl_id, 2, chunk_dims) < 0)
        goto error;
    if ((sid = H5Screate_simple(2, dims, NULL)) < 0)
        goto error;
    if ((did = H5Dcreate2(fid, "dset", H5T_NATIVE_INT, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
        goto error;

    if ((dxpl_id = H5Pcreate(H5P_DATASET_XFER)) < 0)
        goto error;
    if (H5Pset_dxpl_mpio(dxpl_id, H5FD_MPIO_COLLECTIVE) < 0)
        goto error;

    /* Write some data */
    for (i = 0; i < dims[0]; i++)
        for (j = 0; j < dims[1]; j++)
            data_g[(i * 100) + j] = (int)(i + (i * j) + j);

    if (H5Dwrite(did, H5T_NATIVE_INT, sid, sid, dxpl_id, data_g) < 0)
        goto error;

    /* Create some groups */
    if ((top_level_gid = H5Gcreate2(fid, "some_groups", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
        goto error;
    for (i = 0; i < N_GROUPS; i++) {
        HDsnprintf(name, name_length, "grp%02u", (unsigned)i);
        if ((gid = H5Gcreate2(top_level_gid, name, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
            goto error;
        if (H5Gclose(gid) < 0)
            goto error;
    }

    return fid;

error:
    return H5I_INVALID_HID;
} /* end create_test_file() */

/*-------------------------------------------------------------------------
 * Function:    main
 *
 * Purpose:     Part 1 of a two-part parallel H5Fflush() test.
 *
 * Return:      EXIT_FAILURE (always)
 *
 * Programmer:  Robb Matzke
 *              Friday, October 23, 1998
 *
 *-------------------------------------------------------------------------
 */
int
main(int argc, char *argv[])
{
    hid_t       fid1    = H5I_INVALID_HID;
    hid_t       fid2    = H5I_INVALID_HID;
    hid_t       fapl_id = H5I_INVALID_HID;
    MPI_File *  mpifh_p = NULL;
    char        name[1024];
    const char *envval = NULL;
    int         mpi_size;
    int         mpi_rank;
    MPI_Comm    comm = MPI_COMM_WORLD;
    MPI_Info    info = MPI_INFO_NULL;

    MPI_Init(&argc, &argv);
    MPI_Comm_size(comm, &mpi_size);
    MPI_Comm_rank(comm, &mpi_rank);

    if (mpi_rank == 0)
        TESTING("H5Fflush (part1)");

    /* Don't run using the split VFD */
    envval = HDgetenv(HDF5_DRIVER);
    if (envval == NULL)
        envval = "nomatch";

    if (!HDstrcmp(envval, "split")) {
        if (mpi_rank == 0) {
            SKIPPED();
            HDputs("    Test not compatible with current Virtual File Driver");
        }
        MPI_Finalize();
        HDexit(EXIT_FAILURE);
    }

    if (NULL == (data_g = HDmalloc(100 * 100 * sizeof(*data_g))))
        goto error;

    if ((fapl_id = H5Pcreate(H5P_FILE_ACCESS)) < 0)
        goto error;
    if (H5Pset_fapl_mpio(fapl_id, comm, info) < 0)
        goto error;

    /* Create the file */
    h5_fixname(FILENAME[0], fapl_id, name, sizeof(name));
    if ((fid1 = create_test_file(name, sizeof(name), fapl_id)) < 0)
        goto error;
    /* Flush and exit without closing the library */
    if (H5Fflush(fid1, H5F_SCOPE_GLOBAL) < 0)
        goto error;

    /* Create the other file which will not be flushed */
    h5_fixname(FILENAME[1], fapl_id, name, sizeof(name));
    if ((fid2 = create_test_file(name, sizeof(name), fapl_id)) < 0)
        goto error;

    if (mpi_rank == 0)
        PASSED();

    HDfflush(stdout);
    HDfflush(stderr);

    /* Some systems like AIX do not like files not being closed when MPI_Finalize
     * is called.  So, we need to get the MPI file handles, close them by hand.
     * Then the _exit is still needed to stop at_exit from happening in some systems.
     * Note that MPIO VFD returns the address of the file-handle in the VFD struct
     * because MPI_File_close wants to modify the file-handle variable.
     */

    /* Close file 1 */
    if (H5Fget_vfd_handle(fid1, fapl_id, (void **)&mpifh_p) < 0)
        goto error;
    if (MPI_File_close(mpifh_p) != MPI_SUCCESS)
        goto error;

    /* Close file 2 */
    if (H5Fget_vfd_handle(fid2, fapl_id, (void **)&mpifh_p) < 0)
        goto error;
    if (MPI_File_close(mpifh_p) != MPI_SUCCESS)
        goto error;

    HDfflush(stdout);
    HDfflush(stderr);

    if (data_g) {
        HDfree(data_g);
        data_g = NULL;
    }

    /* Always exit with a failure code!
     *
     * In accordance with the standard, not having all processes
     * call MPI_Finalize() can be considered an error, so mpiexec
     * et al. may indicate failure on return. It's much easier to
     * always ignore the failure condition than to handle some
     * platforms returning success and others failure.
     */
    HD_exit(EXIT_FAILURE);

error:
    HDfflush(stdout);
    HDfflush(stderr);
    HDprintf("*** ERROR ***\n");
    HDprintf("THERE WAS A REAL ERROR IN t_pflush1.\n");
    HDfflush(stdout);

    if (data_g)
        HDfree(data_g);

    HD_exit(EXIT_FAILURE);
} /* end main() */