2 #include "git-compat-util.h"
8 struct hashmap_entry ent;
9 /* key and value as two \0-terminated strings */
13 static const char *get_value(const struct test_entry *e)
15 return e->key + strlen(e->key) + 1;
18 static int test_entry_cmp(const void *cmp_data,
20 const void *entry_or_key,
23 const int ignore_case = cmp_data ? *((int *)cmp_data) : 0;
24 const struct test_entry *e1 = entry;
25 const struct test_entry *e2 = entry_or_key;
26 const char *key = keydata;
29 return strcasecmp(e1->key, key ? key : e2->key);
31 return strcmp(e1->key, key ? key : e2->key);
34 static struct test_entry *alloc_test_entry(unsigned int hash,
35 char *key, char *value)
37 size_t klen = strlen(key);
38 size_t vlen = strlen(value);
39 struct test_entry *entry = xmalloc(st_add4(sizeof(*entry), klen, vlen, 2));
40 hashmap_entry_init(entry, hash);
41 memcpy(entry->key, key, klen + 1);
42 memcpy(entry->key + klen + 1, value, vlen + 1);
46 #define HASH_METHOD_FNV 0
47 #define HASH_METHOD_I 1
48 #define HASH_METHOD_IDIV10 2
49 #define HASH_METHOD_0 3
50 #define HASH_METHOD_X2 4
53 #define TEST_SIZE 100000
55 static unsigned int hash(unsigned int method, unsigned int i, const char *key)
57 unsigned int hash = 0;
66 case HASH_METHOD_IDIV10:
74 if (method & HASH_METHOD_X2)
80 * Test performance of hashmap.[ch]
81 * Usage: time echo "perfhashmap method rounds" | test-tool hashmap
83 static void perf_hashmap(unsigned int method, unsigned int rounds)
87 struct test_entry **entries;
91 ALLOC_ARRAY(entries, TEST_SIZE);
92 ALLOC_ARRAY(hashes, TEST_SIZE);
93 for (i = 0; i < TEST_SIZE; i++) {
94 xsnprintf(buf, sizeof(buf), "%i", i);
95 entries[i] = alloc_test_entry(0, buf, "");
96 hashes[i] = hash(method, i, entries[i]->key);
99 if (method & TEST_ADD) {
100 /* test adding to the map */
101 for (j = 0; j < rounds; j++) {
102 hashmap_init(&map, test_entry_cmp, NULL, 0);
105 for (i = 0; i < TEST_SIZE; i++) {
106 hashmap_entry_init(entries[i], hashes[i]);
107 hashmap_add(&map, entries[i]);
110 hashmap_free(&map, 0);
113 /* test map lookups */
114 hashmap_init(&map, test_entry_cmp, NULL, 0);
116 /* fill the map (sparsely if specified) */
117 j = (method & TEST_SPARSE) ? TEST_SIZE / 10 : TEST_SIZE;
118 for (i = 0; i < j; i++) {
119 hashmap_entry_init(entries[i], hashes[i]);
120 hashmap_add(&map, entries[i]);
123 for (j = 0; j < rounds; j++) {
124 for (i = 0; i < TEST_SIZE; i++) {
125 hashmap_get_from_hash(&map, hashes[i],
130 hashmap_free(&map, 0);
134 #define DELIM " \t\r\n"
137 * Read stdin line by line and print result of commands to stdout:
139 * hash key -> strhash(key) memhash(key) strihash(key) memihash(key)
140 * put key value -> NULL / old value
141 * get key -> NULL / value
142 * remove key -> NULL / old value
143 * iterate -> key1 value1\nkey2 value2\n...
144 * size -> tablesize numentries
146 * perfhashmap method rounds -> test hashmap.[ch] performance
148 int cmd__hashmap(int argc, const char **argv)
150 struct strbuf line = STRBUF_INIT;
155 icase = argc > 1 && !strcmp("ignorecase", argv[1]);
156 hashmap_init(&map, test_entry_cmp, &icase, 0);
158 /* process commands from stdin */
159 while (strbuf_getline(&line, stdin) != EOF) {
160 char *cmd, *p1 = NULL, *p2 = NULL;
161 unsigned int hash = 0;
162 struct test_entry *entry;
164 /* break line into command and up to two parameters */
165 cmd = strtok(line.buf, DELIM);
166 /* ignore empty lines */
167 if (!cmd || *cmd == '#')
170 p1 = strtok(NULL, DELIM);
172 hash = icase ? strihash(p1) : strhash(p1);
173 p2 = strtok(NULL, DELIM);
176 if (!strcmp("add", cmd) && p1 && p2) {
178 /* create entry with key = p1, value = p2 */
179 entry = alloc_test_entry(hash, p1, p2);
182 hashmap_add(&map, entry);
184 } else if (!strcmp("put", cmd) && p1 && p2) {
186 /* create entry with key = p1, value = p2 */
187 entry = alloc_test_entry(hash, p1, p2);
189 /* add / replace entry */
190 entry = hashmap_put(&map, entry);
192 /* print and free replaced entry, if any */
193 puts(entry ? get_value(entry) : "NULL");
196 } else if (!strcmp("get", cmd) && p1) {
198 /* lookup entry in hashmap */
199 entry = hashmap_get_from_hash(&map, hash, p1);
205 puts(get_value(entry));
206 entry = hashmap_get_next(&map, entry);
209 } else if (!strcmp("remove", cmd) && p1) {
211 /* setup static key */
212 struct hashmap_entry key;
213 hashmap_entry_init(&key, hash);
215 /* remove entry from hashmap */
216 entry = hashmap_remove(&map, &key, p1);
218 /* print result and free entry*/
219 puts(entry ? get_value(entry) : "NULL");
222 } else if (!strcmp("iterate", cmd)) {
224 struct hashmap_iter iter;
225 hashmap_iter_init(&map, &iter);
226 while ((entry = hashmap_iter_next(&iter)))
227 printf("%s %s\n", entry->key, get_value(entry));
229 } else if (!strcmp("size", cmd)) {
231 /* print table sizes */
232 printf("%u %u\n", map.tablesize,
233 hashmap_get_size(&map));
235 } else if (!strcmp("intern", cmd) && p1) {
237 /* test that strintern works */
238 const char *i1 = strintern(p1);
239 const char *i2 = strintern(p1);
241 printf("strintern(%s) returns %s\n", p1, i1);
243 printf("strintern(%s) returns input pointer\n", p1);
245 printf("strintern(%s) != strintern(%s)", i1, i2);
249 } else if (!strcmp("perfhashmap", cmd) && p1 && p2) {
251 perf_hashmap(atoi(p1), atoi(p2));
255 printf("Unknown command %s\n", cmd);
260 strbuf_release(&line);
261 hashmap_free(&map, 1);