summaryrefslogtreecommitdiffstats
path: root/test/swmr_common.c
blob: 651e88e14c4a97384c4ffb8bb734bd8249a5c5b5 (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
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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.     *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*-------------------------------------------------------------------------
 *
 * Created:     swmr_common.c
 *
 * Purpose:     Utility functions for the SWMR test code.
 *
 *-------------------------------------------------------------------------
 */

/***********/
/* Headers */
/***********/

#include <assert.h>

#include "swmr_common.h"

/*******************/
/* Local Variables */
/*******************/

/* The SWMR data arrays:
 *
 * The code uses a 2-D jagged array of datasets.  The first dimension is called
 * the 'level' and there are five of them.
 *
 * #define NLEVELS         5
 *
 * The second dimension is the 'count' and there are quite a few datasets per
 * 'level'.
 *
 * unsigned symbol_count[NLEVELS] = {100, 200, 400, 800, 1600};
 *
 * These datasets are created when the skeleton is generated and are initially
 * empty.  Each dataset has no upper bound on size (H5S_UNLIMITED).  They
 * are of compound type, with two members: an integer ID and an opaque
 * 'data part'.  The data part is not used by the SWMR testing.
 *
 * The SWMR testing will then randomly add and/or remove entries
 * from these datasets.  The selection of the level is skewed by a mapping
 * table which preferentially hammers on the lower levels with their smaller
 * number of datasets.
 *
 * static unsigned symbol_mapping[NMAPPING] = {0, 0, 0, 0, 1, 1, 2, 3, 4};
 *
 * The information about each dataset (name, hid_t, etc.) is stored in a
 * separate array.
 *
 * symbol_info_t *symbol_info[NLEVELS];
 */

/* An array of dataset levels, used to select the level for a SWMR operation
 * Note that this preferentially selects the lower levels with their smaller
 * number of datasets.
 */
static unsigned symbol_mapping[NMAPPING] = {0, 0, 0, 0, 1, 1, 2, 3, 4};

/* The number of datasets at each level */
unsigned symbol_count[NLEVELS] = {100, 200, 400, 800, 1600};

/* Array of dataset information entries (1 per dataset) */
symbol_info_t *symbol_info[NLEVELS];


/*-------------------------------------------------------------------------
 * Function:    choose_dataset
 *
 * Purpose:     Selects a random dataset in the SWMR file
 *
 * Parameters:  N/A
 *
 * Return:      Success:    A pointer to information about a dataset.
 *              Failure:    Can't fail
 *
 *-------------------------------------------------------------------------
 */
symbol_info_t *
choose_dataset(void)
{
    unsigned level;             /* The level of the dataset */
    unsigned offset;            /* The "offset" of the dataset at that level */

    /* Determine level of dataset */
    level = symbol_mapping[random() % NMAPPING];

    /* Determine the offset of the level */
    offset = random() % symbol_count[level];

    return &symbol_info[level][offset];
} /* end choose_dataset() */


/*-------------------------------------------------------------------------
 * Function:    create_symbol_datatype
 *
 * Purpose:     Create's the HDF5 datatype used for elements in the SWMR
 *              testing datasets.
 *
 * Parameters:  N/A
 *
 * Return:      Success:    An HDF5 type ID
 *              Failure:    -1
 *
 *-------------------------------------------------------------------------
 */
hid_t
create_symbol_datatype(void)
{
    hid_t sym_type_id;          /* Datatype ID for symbol */
    hid_t opaq_type_id;         /* Datatype ID for opaque part of record */

    /* Create opaque datatype to represent other information for this record */
    if((opaq_type_id = H5Tcreate(H5T_OPAQUE, DTYPE_SIZE)) < 0)
        return -1;

    /* Create compound datatype for symbol */
    if((sym_type_id = H5Tcreate(H5T_COMPOUND, sizeof(symbol_t))) < 0)
        return -1;

    /* Insert fields in symbol datatype */
    if(H5Tinsert(sym_type_id, "rec_id", HOFFSET(symbol_t, rec_id), H5T_NATIVE_UINT64) < 0)
        return -1;
    if(H5Tinsert(sym_type_id, "info", HOFFSET(symbol_t, info), opaq_type_id) < 0)
        return -1;

    /* Close opaque datatype */
    if(H5Tclose(opaq_type_id) < 0)
        return -1;

    return sym_type_id;
} /* end create_symbol_datatype() */


/*-------------------------------------------------------------------------
 * Function:    generate_name
 *
 * Purpose:     Generates a SWMR testing dataset name given a level and
 *              count.
 *              The name is in the format <name>-<level> (%u-%04u).
 *
 * Parameters:  char *name_buf
 *              Buffer for the created name.  Must be pre-allocated.
 *              Since the name is formulaic, this isn't considered an issue.
 *
 *              unsigned level
 *              The dataset's level
 *
 *              unsigned count
 *              The dataset's count
 *
 * Return:      Success:    0
 *                          
 *              Failure:    Can't fail
 *
 *-------------------------------------------------------------------------
 */
int
generate_name(char *name_buf, unsigned level, unsigned count)
{
    assert(name_buf);
    
    sprintf(name_buf, "%u-%04u", level, count);

    return 0;
} /* end generate_name() */


/*-------------------------------------------------------------------------
 * Function:    generate_symbols
 *
 * Purpose:     Initializes the global dataset infomration arrays.
 *
 * Parameters:  N/A
 *
 * Return:      Success:    0
 *              Failure:    Can't fail
 *
 *-------------------------------------------------------------------------
 */
int
generate_symbols(void)
{
    unsigned u, v;      /* Local index variables */

    for(u = 0; u < NLEVELS; u++) {
        symbol_info[u] = (symbol_info_t *)malloc(symbol_count[u] * sizeof(symbol_info_t));
        for(v = 0; v < symbol_count[u]; v++) {
            char name_buf[64];

            generate_name(name_buf, u, v);
            symbol_info[u][v].name = (char *)malloc(strlen(name_buf) + 1);
            strcpy(symbol_info[u][v].name, name_buf);
            symbol_info[u][v].dsid = -1;
            symbol_info[u][v].nrecords = 0;
        } /* end for */
    } /* end for */

    return 0;
} /* end generate_symbols() */


/*-------------------------------------------------------------------------
 * Function:    shutdown_symbols
 *
 * Purpose:     Cleans up the global dataset information arrays.
 *
 * Parameters:  N/A
 *
 * Return:      Success:    0
 *              Failure:    Can't fail
 *
 *-------------------------------------------------------------------------
 */
int
shutdown_symbols(void)
{
    unsigned u, v;      /* Local index variables */

    /* Clean up the symbols */
    for(u = 0; u < NLEVELS; u++) {
        for(v = 0; v < symbol_count[u]; v++)
            free(symbol_info[u][v].name);
        free(symbol_info[u]);
    } /* end for */

    return 0;
} /* end shutdown_symbols() */


/*-------------------------------------------------------------------------
 * Function:    print_metadata_retries_info
 *
 * Purpose:     To retrieve and print the collection of metadata retries for the file.
 *
 * Parameters:  fid: the currently opened file identifier
 *
 * Return:      Success:    0
 *              Failure:    negative
 *
 *-------------------------------------------------------------------------
 */
int
print_metadata_retries_info(hid_t fid)
{
    H5F_retries_info_t info;
    unsigned power;
    unsigned i, j;

    /* Retrieve the collection of retries */
    if(H5Fget_metadata_read_retries_info(fid, &info) < 0)
	return (-1);

    /* Print information for each non-NULL retries[i] */
    for(i = 0; i < NUM_METADATA_READ_RETRIES; i++) {
	if(info.retries[i] == NULL)
	    continue;

	fprintf(stderr, "Metadata read retries for item %u:\n", i);
	power = 1;
	for(j = 0; j < info.nbins; j++) {
	    if(info.retries[i][j])
		fprintf(stderr, "\t# of retries for %u - %u retries: %u\n", 
		       power, (power * 10) - 1, info.retries[i][j]);
	    power *= 10;
	}
    }

    /* Free memory for each non-NULL retries[i] */
    for(i = 0; i < NUM_METADATA_READ_RETRIES; i++) {
        if(info.retries[i] != NULL)
            free(info.retries[i]);
    }
    return 0;
} /* print_metadata_retries_info() */