1 #include "git-compat-util.h"
6 struct hashmap_entry ent;
7 /* key and value as two \0-terminated strings */
11 static const char *get_value(const struct test_entry *e)
13 return e->key + strlen(e->key) + 1;
16 static int test_entry_cmp(const void *cmp_data,
18 const void *entry_or_key,
21 const int ignore_case = cmp_data ? *((int *)cmp_data) : 0;
22 const struct test_entry *e1 = entry;
23 const struct test_entry *e2 = entry_or_key;
24 const char *key = keydata;
27 return strcasecmp(e1->key, key ? key : e2->key);
29 return strcmp(e1->key, key ? key : e2->key);
32 static struct test_entry *alloc_test_entry(int hash, char *key, int klen,
33 char *value, int vlen)
35 struct test_entry *entry = xmalloc(st_add4(sizeof(*entry), klen, vlen, 2));
36 hashmap_entry_init(entry, hash);
37 memcpy(entry->key, key, klen + 1);
38 memcpy(entry->key + klen + 1, value, vlen + 1);
42 #define HASH_METHOD_FNV 0
43 #define HASH_METHOD_I 1
44 #define HASH_METHOD_IDIV10 2
45 #define HASH_METHOD_0 3
46 #define HASH_METHOD_X2 4
49 #define TEST_SIZE 100000
51 static unsigned int hash(unsigned int method, unsigned int i, const char *key)
53 unsigned int hash = 0;
62 case HASH_METHOD_IDIV10:
70 if (method & HASH_METHOD_X2)
76 * Test performance of hashmap.[ch]
77 * Usage: time echo "perfhashmap method rounds" | test-hashmap
79 static void perf_hashmap(unsigned int method, unsigned int rounds)
83 struct test_entry **entries;
87 ALLOC_ARRAY(entries, TEST_SIZE);
88 ALLOC_ARRAY(hashes, TEST_SIZE);
89 for (i = 0; i < TEST_SIZE; i++) {
90 snprintf(buf, sizeof(buf), "%i", i);
91 entries[i] = alloc_test_entry(0, buf, strlen(buf), "", 0);
92 hashes[i] = hash(method, i, entries[i]->key);
95 if (method & TEST_ADD) {
96 /* test adding to the map */
97 for (j = 0; j < rounds; j++) {
98 hashmap_init(&map, test_entry_cmp, NULL, 0);
101 for (i = 0; i < TEST_SIZE; i++) {
102 hashmap_entry_init(entries[i], hashes[i]);
103 hashmap_add(&map, entries[i]);
106 hashmap_free(&map, 0);
109 /* test map lookups */
110 hashmap_init(&map, test_entry_cmp, NULL, 0);
112 /* fill the map (sparsely if specified) */
113 j = (method & TEST_SPARSE) ? TEST_SIZE / 10 : TEST_SIZE;
114 for (i = 0; i < j; i++) {
115 hashmap_entry_init(entries[i], hashes[i]);
116 hashmap_add(&map, entries[i]);
119 for (j = 0; j < rounds; j++) {
120 for (i = 0; i < TEST_SIZE; i++) {
121 hashmap_get_from_hash(&map, hashes[i],
126 hashmap_free(&map, 0);
130 #define DELIM " \t\r\n"
133 * Read stdin line by line and print result of commands to stdout:
135 * hash key -> strhash(key) memhash(key) strihash(key) memihash(key)
136 * put key value -> NULL / old value
137 * get key -> NULL / value
138 * remove key -> NULL / old value
139 * iterate -> key1 value1\nkey2 value2\n...
140 * size -> tablesize numentries
142 * perfhashmap method rounds -> test hashmap.[ch] performance
144 int cmd_main(int argc, const char **argv)
151 icase = argc > 1 && !strcmp("ignorecase", argv[1]);
152 hashmap_init(&map, test_entry_cmp, &icase, 0);
154 /* process commands from stdin */
155 while (fgets(line, sizeof(line), stdin)) {
156 char *cmd, *p1 = NULL, *p2 = NULL;
157 int l1 = 0, l2 = 0, hash = 0;
158 struct test_entry *entry;
160 /* break line into command and up to two parameters */
161 cmd = strtok(line, DELIM);
162 /* ignore empty lines */
163 if (!cmd || *cmd == '#')
166 p1 = strtok(NULL, DELIM);
169 hash = icase ? strihash(p1) : strhash(p1);
170 p2 = strtok(NULL, DELIM);
175 if (!strcmp("hash", cmd) && l1) {
177 /* print results of different hash functions */
178 printf("%u %u %u %u\n", strhash(p1), memhash(p1, l1),
179 strihash(p1), memihash(p1, l1));
181 } else if (!strcmp("add", cmd) && l1 && l2) {
183 /* create entry with key = p1, value = p2 */
184 entry = alloc_test_entry(hash, p1, l1, p2, l2);
187 hashmap_add(&map, entry);
189 } else if (!strcmp("put", cmd) && l1 && l2) {
191 /* create entry with key = p1, value = p2 */
192 entry = alloc_test_entry(hash, p1, l1, p2, l2);
194 /* add / replace entry */
195 entry = hashmap_put(&map, entry);
197 /* print and free replaced entry, if any */
198 puts(entry ? get_value(entry) : "NULL");
201 } else if (!strcmp("get", cmd) && l1) {
203 /* lookup entry in hashmap */
204 entry = hashmap_get_from_hash(&map, hash, p1);
210 puts(get_value(entry));
211 entry = hashmap_get_next(&map, entry);
214 } else if (!strcmp("remove", cmd) && l1) {
216 /* setup static key */
217 struct hashmap_entry key;
218 hashmap_entry_init(&key, hash);
220 /* remove entry from hashmap */
221 entry = hashmap_remove(&map, &key, p1);
223 /* print result and free entry*/
224 puts(entry ? get_value(entry) : "NULL");
227 } else if (!strcmp("iterate", cmd)) {
229 struct hashmap_iter iter;
230 hashmap_iter_init(&map, &iter);
231 while ((entry = hashmap_iter_next(&iter)))
232 printf("%s %s\n", entry->key, get_value(entry));
234 } else if (!strcmp("size", cmd)) {
236 /* print table sizes */
237 printf("%u %u\n", map.tablesize,
238 hashmap_get_size(&map));
240 } else if (!strcmp("intern", cmd) && l1) {
242 /* test that strintern works */
243 const char *i1 = strintern(p1);
244 const char *i2 = strintern(p1);
246 printf("strintern(%s) returns %s\n", p1, i1);
248 printf("strintern(%s) returns input pointer\n", p1);
250 printf("strintern(%s) != strintern(%s)", i1, i2);
254 } else if (!strcmp("perfhashmap", cmd) && l1 && l2) {
256 perf_hashmap(atoi(p1), atoi(p2));
260 printf("Unknown command %s\n", cmd);
265 hashmap_free(&map, 1);