summaryrefslogtreecommitdiff
path: root/common/dhash/dhash_test.c
blob: 450a1ab552d4cfc6942a45712fbed0b22bccbd64 (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
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
#include <stdio.h>
#include <assert.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <getopt.h>
#include "dhash.h"

#define DEFAULT_MAX_TEST (500)
hash_entry_t *iter_result_1 = NULL;
hash_entry_t *iter_result_2 = NULL;

unsigned long max_test = DEFAULT_MAX_TEST;
int verbose = 0;

const char *error_string(int error)
{
    if (IS_HASH_ERROR(error))
        return hash_error_string(error);

    return strerror(error);
}

char *key_string(hash_key_t *key)
{
    static char buf[1024];

    switch(key->type) {
    case HASH_KEY_ULONG:
        snprintf(buf, sizeof(buf), "key ulong = %lu", key->ul);
        break;
    case HASH_KEY_STRING:
        snprintf(buf, sizeof(buf), "key string = \"%s\"", key->str);
        break;
    default:
        snprintf(buf, sizeof(buf), "unknown key type = %d", key->type);
        break;
    }
    return buf;
}

char *value_string(hash_value_t *value)
{
    static char buf[1024];

    switch(value->type) {
    case HASH_VALUE_UNDEF:
        snprintf(buf, sizeof(buf), "value undefined");
        break;
    case HASH_VALUE_PTR:
        snprintf(buf, sizeof(buf), "value str = \"%s\"", (char *)value->ptr);
        break;
    case HASH_VALUE_INT:
        snprintf(buf, sizeof(buf), "value int = %d", value->i);
        break;
    case HASH_VALUE_UINT:
        snprintf(buf, sizeof(buf), "value unsigned int = %u", value->ui);
        break;
    case HASH_VALUE_LONG:
        snprintf(buf, sizeof(buf), "value long = %ld", value->l);
        break;
    case HASH_VALUE_ULONG:
        snprintf(buf, sizeof(buf), "value unsigned long = %lu", value->ul);
        break;
    case HASH_VALUE_FLOAT:
        snprintf(buf, sizeof(buf), "value float = %f", value->f);
        break;
    case HASH_VALUE_DOUBLE:
        snprintf(buf, sizeof(buf), "value double = %f", value->f);
        break;
    default:
        snprintf(buf, sizeof(buf), "unknown value type = %d", value->type);
        break;
    }

    return buf;
}

char *entry_string(hash_entry_t *entry)
{
    static char buf[1024];

    snprintf(buf, sizeof(buf), "[%s] = [%s]", key_string(&entry->key), value_string(&entry->value));

    return buf;

}

bool callback(hash_entry_t *item, void *user_data)
{
    unsigned long *callback_count = (unsigned long *)user_data;

    iter_result_1[*callback_count] = *item;

    (*callback_count)++;

    if (verbose) printf("%s\n", entry_string(item));
    return true;
}

void delete_callback(hash_entry_t *item)
{
    if (item->value.type == HASH_VALUE_PTR) free(item->value.ptr);
}

typedef struct test_val_t {
    long val;
    char *str;
} test_val_t;


int main(int argc, char **argv)
{
    test_val_t *test = NULL;
    long i, k;
    int status;
    hash_value_t value;
    hash_key_t key;
    char buf[1024];
    hash_table_t *table = NULL;
    unsigned long callback_count = 0;
    unsigned int directory_bits = HASH_DEFAULT_DIRECTORY_BITS;
    unsigned int segment_bits = HASH_DEFAULT_SEGMENT_BITS;
    unsigned long min_load_factor = HASH_DEFAULT_MIN_LOAD_FACTOR;
    unsigned long max_load_factor = HASH_DEFAULT_MAX_LOAD_FACTOR;

    while (1) {
        int arg;
        int option_index = 0;
        static struct option long_options[] = {
            {"count", 1, 0, 'c'},
            {"verbose", 1, 0, 'v'},
            {"quiet", 1, 0, 'q'},
            {"directory-bits", 1, 0, 'd'},
            {"segment-bits", 1, 0, 's'},
            {"min-load-factor", 1, 0, 'l'},
            {"max-load-factor", 1, 0, 'h'},
            {0, 0, 0, 0}
        };

        arg = getopt_long(argc, argv, "c:vqd:s:l:h:",
                          long_options, &option_index);
        if (arg == -1) break;

        switch (arg) {
        case 'c':
            max_test = atol(optarg);
            break;
        case 'v':
            verbose = 1;
            break;
        case 'q':
            verbose = 0;
            break;
        case 'd':
            directory_bits = atoi(optarg);
            break;
        case 's':
            segment_bits = atoi(optarg);
            break;
        case 'l':
            min_load_factor = atol(optarg);
            break;
        case 'h':
            max_load_factor = atol(optarg);
            break;
        }
    }

    if ((test = (test_val_t *) calloc(max_test, sizeof(test_val_t))) == NULL) {
        fprintf(stderr, "Failed to allocate test array\n");
        exit(1);
    }
    if ((iter_result_1 = (hash_entry_t *) calloc(max_test, sizeof(hash_entry_t))) == NULL) {
        fprintf(stderr, "Failed to allocate iter_result_1 array\n");
        exit(1);
    }
    if ((iter_result_2 = (hash_entry_t *) calloc(max_test, sizeof(hash_entry_t))) == NULL) {
        fprintf(stderr, "Failed to allocate iter_result_2 array\n");
        exit(1);
    }


    /* Initialize the random number generator */
    srandom(time(0));

    /* Create the hash table as small as possible to exercise growth */
    if ((status = hash_create_ex(1, &table,
                                 directory_bits, segment_bits,
                                 min_load_factor, max_load_factor,
                                 NULL, NULL, delete_callback)) != HASH_SUCCESS) {
        fprintf(stderr, "table creation failed at line %d (%s)\n", __LINE__, error_string(status));
        exit(1);
    }

    /* Initialize the array of test values */
    for (i = 0; i < max_test; i++) {
        test[i].val = random();
        /* If the value is odd we'll use a string as the key,
         * otherwise we'll use an unsigned long as the key */
        if (test[i].val & 1) {
            key.type = HASH_KEY_STRING;
            sprintf(buf, "%ld", test[i].val);
            test[i].str = strdup(buf);
        }
    }

    /* Enter all the test values into the hash table */
    for (i = 0; i < max_test; i++) {
        if (test[i].val & 1) {
            key.type = HASH_KEY_STRING;
            key.str = test[i].str;
            value.type = HASH_VALUE_PTR;
            value.ptr = (void *) strdup(test[i].str);
        }
        else {
            key.type = HASH_KEY_ULONG;
            key.ul = test[i].val;
            value.type = HASH_VALUE_LONG;
            value.l = test[i].val;
        }

        if (hash_has_key(table, &key)) {
            fprintf(stderr, "Error: %ld already in table when inserting, i = %lu, at line %d\n",
                    test[i].val, i, __LINE__);
            exit(1);
        }
        if ((status = hash_enter(table, &key, &value)) != HASH_SUCCESS) {
            fprintf(stderr, "Error: %ld failed insertion at line %d (%s) \n",
                    test[i].val, __LINE__, error_string(status));
            exit(1);
        }
    }

    /* Now visit each entry in the table using a callback iterator,
     * store what we found in iter_result_1 for testing the iterator object later on */
    if (verbose) printf("callback iterate:\n");
    callback_count = 0;
    if ((status = hash_iterate(table, callback, &callback_count)) != HASH_SUCCESS) {
        fprintf(stderr, "hash_iterate failed at line %d (%s)\n", __LINE__, error_string(status));
        exit(1);
    }
    if (verbose) printf("hash_count=%ld,  callback_count=%ld\n", hash_count(table), callback_count);

    if (hash_count(table) != callback_count) {
        fprintf(stderr, "Error: hash_count(%ld) != callback_count(%ld) at line %d\n",
                hash_count(table), callback_count, __LINE__);
        exit(1);
    }

    /* Now vist each entry in the table using an iterator object */
    {
        struct hash_iter_context_t *iter;
        unsigned long n_items;
        hash_entry_t *entry;

        if (verbose) printf("iter iterate:\n");

        n_items = 0;
        iter = new_hash_iter_context(table);

        while ((entry = iter->next(iter)) != NULL) {
            if (verbose) printf("%s\n", entry_string(entry));
            iter_result_2[n_items] = *entry;
            n_items++;
        }
        if (verbose) printf("hash_count=%ld,  n_items=%ld\n", hash_count(table), n_items);

        if (hash_count(table) != n_items) {
            fprintf(stderr, "Error: hash_count(%ld) != n_items(%ld) at line %d\n",
                    hash_count(table), n_items, __LINE__);
            exit(1);
        }
        free(iter);
    }

    /* Both iterators should have visited each item in the same order, verify ... */
    for (i = 0; i < max_test; i++) {
        if (memcmp(&iter_result_1[i], &iter_result_2[i], sizeof(iter_result_1[0])) != 0) {
            fprintf(stderr, "Error: iter_result_1[%lu] != iter_result_2[%lu] at line %d\n",
                    i, i, __LINE__);
            exit(1);
        }
    }

    /* Get an array of keys in the table, print them out */
    {
        unsigned long count;
        hash_key_t *keys;

        if (verbose) printf("\nhash_keys:\n");
        if ((status = hash_keys(table, &count, &keys)) != HASH_SUCCESS) {
            fprintf(stderr, "hash_keys failed at line %d (%s)\n",
                    __LINE__, error_string(status));
            exit(1);
        }

        if (hash_count(table) != count) {
            fprintf(stderr, "Error: hash_count(%ld) != hash_keys() count(%ld) at line %d\n",
                    hash_count(table), count, __LINE__);
            exit(1);
        }

        for (i = 0; i < count; i++) {
            if (verbose) printf("%s\n", key_string(&keys[i]));
        }
        free(keys);
    }

    /* Get an array of values in the table, print them out */
    {
        unsigned long count;
        hash_value_t *values;

        if (verbose) printf("\nhash_values:\n");
        hash_values(table, &count, &values);

        if (hash_count(table) != count) {
            fprintf(stderr, "Error: hash_count(%ld) != hash_values() count(%ld) at line %d\n",
                    hash_count(table), count, __LINE__);
            exit(1);
        }

        for (i = 0; i < count; i++) {
            if (verbose) printf("%s\n", value_string(&values[i]));
        }
        free(values);
    }

    /* Get an array of items in the table, print them out */
    {
        unsigned long count;
        hash_entry_t *entries;

        if (verbose) printf("\nhash_entries:\n");
        hash_entries(table, &count, &entries);

        if (hash_count(table) != count) {
            fprintf(stderr, "Error: hash_count(%ld) != hash_entries() count(%ld) at line %d\n",
                    hash_count(table), count, __LINE__);
            exit(1);
        }

        for (i = 0; i < count; i++) {
            if (verbose) printf("%s\n", entry_string(&entries[i]));
        }
        free(entries);
    }

    /* See if we can find every key */
    for (i = max_test - 1; i >= 0; i--) {
        if (test[i].val & 1) {
            key.type = HASH_KEY_STRING;
            key.str = test[i].str;
        }
        else {
            key.type = HASH_KEY_ULONG;
            key.ul = test[i].val;
        }
        if ((status = hash_lookup(table, &key, &value)) != HASH_SUCCESS) {
            fprintf(stderr, "Error: failed first lookup for value %ld at index %ld at line %d (%s)\n",
                    test[i].val, i, __LINE__, error_string(status));
            exit(1);
        }
        else {
            switch(value.type) {
            case HASH_VALUE_PTR:
                if (strcmp((char *)value.ptr, test[i].str) != 0) {
                    fprintf(stderr, "Error: corrupt ptr data for %lu at line %d\n", i, __LINE__);
                    exit(1);
                }
                break;
            case HASH_VALUE_LONG:
                if (value.l != test[i].val) {
                    fprintf(stderr, "Error: corrupt long data for %lu at line %d\n", i, __LINE__);
                    exit(1);
                }
                break;
            default:
                fprintf(stderr, "Error: unknown value type for %lu\n", i);
                break;
            }
        }
    }


    /*
     * Delete a key, make sure we can't find it, assure we can find all other
     * keys.
     */
    for (i = 0; i < max_test; i++) {
        if (test[i].val & 1) {
            key.type = HASH_KEY_STRING;
            key.str = test[i].str;
        }
        else {
            key.type = HASH_KEY_ULONG;
            key.ul = test[i].val;
        }

        if ((status = hash_lookup(table, &key, &value)) != HASH_SUCCESS) {
            fprintf(stderr, "Error: failed delete lookup for value %ld at index %ld at line %d (%s)\n",
                    test[i].val, i, __LINE__, error_string(status));
            exit(1);
        }

        if ((status = hash_delete(table, &key)) != HASH_SUCCESS) {
            fprintf(stderr, "Error: %ld not in table when deleting, i = %lu at line %d (%s)\n",
                    test[i].val, i, __LINE__, error_string(status));
            exit(1);
        }

        if (hash_lookup(table, &key, &value) != HASH_ERROR_KEY_NOT_FOUND) {
            fprintf(stderr, "Error: found in table after deletion, value = %ld at index %ld at line %d\n",
                    test[i].val, i, __LINE__);
            exit(1);
        }
        /* See if we can find all remaining keys */
        for (k = i + 1; k < max_test; k++) {
            if (test[k].val & 1) {
                key.type = HASH_KEY_STRING;
                key.str = test[k].str;
            } else {
                key.type = HASH_KEY_ULONG;
                key.ul = test[k].val;
            }
            if ((status = hash_lookup(table, &key, &value)) != HASH_SUCCESS) {
                fprintf(stderr, "Error: failed second lookup for value %ld, i = %lu k = %lu at line %d (%s)\n",
                        test[k].val, i, k, __LINE__, error_string(status));
                exit(1);
            } else {
                switch(value.type) {
                case HASH_VALUE_PTR:
                    if (strcmp((char *)value.ptr, test[k].str) != 0) {
                        fprintf(stderr, "Error: corrupt ptr data for %lu at line %d\n", k, __LINE__);
                        exit(1);
                    }
                    break;
                case HASH_VALUE_LONG:
                    if (value.l != test[k].val) {
                        fprintf(stderr, "Error: corrupt long data for %lu at line %d\n", k, __LINE__);
                        exit(1);
                    }
                    break;
                default:
                    fprintf(stderr, "Error: unknown value type (%d) for %lu\n", value.type, k);
                    break;
                }
            }
        }
    }

    if (verbose) printf("\n");

#ifdef HASH_STATISTICS
    {
        hash_statistics_t stats;

        if ((status = hash_get_statistics(table, &stats)) != HASH_SUCCESS) {
            fprintf(stderr, "Error: could not get statistics at line %d (%s)\n",
                    __LINE__, error_string(status));
            exit(1);
        }

        printf("Statistics: Accesses = %ld, Collisions = %ld, Collision Rate = %.2f, Expansions = %ld, Contractions = %ld\n",
               stats.hash_accesses, stats.hash_collisions,
               ((float)stats.hash_collisions / (float)stats.hash_accesses),
               stats.table_expansions, stats.table_contractions);
    }
#endif

    if ((status = hash_destroy(table)) != HASH_SUCCESS) {
        fprintf(stderr, "table destruction failed at line %d (%s)\n",
                __LINE__, error_string(status));
        exit(1);
    }

    for (i = 0; i < max_test; i++) {
        if (test[i].val & 1) {
            free(test[i].str);
        }
    }
    free(test);
    free(iter_result_1);
    free(iter_result_2);

    printf("Successfully tested %lu values\n", max_test);
    return 0;
}