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e8fa59b9 | 1 | #include "git-compat-util.h" |
6a364ced | 2 | #include "hashmap.h" |
6a364ced KB |
3 | |
4 | struct test_entry | |
5 | { | |
6 | struct hashmap_entry ent; | |
7 | /* key and value as two \0-terminated strings */ | |
8 | char key[FLEX_ARRAY]; | |
9 | }; | |
10 | ||
11 | static const char *get_value(const struct test_entry *e) | |
12 | { | |
13 | return e->key + strlen(e->key) + 1; | |
14 | } | |
15 | ||
6815d114 SB |
16 | static int test_entry_cmp(const void *cmp_data, |
17 | const void *entry, | |
18 | const void *entry_or_key, | |
19 | const void *keydata) | |
6a364ced | 20 | { |
6815d114 SB |
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; | |
25 | ||
26 | if (ignore_case) | |
27 | return strcasecmp(e1->key, key ? key : e2->key); | |
28 | else | |
29 | return strcmp(e1->key, key ? key : e2->key); | |
6a364ced KB |
30 | } |
31 | ||
32 | static struct test_entry *alloc_test_entry(int hash, char *key, int klen, | |
33 | char *value, int vlen) | |
34 | { | |
b6c4380d | 35 | struct test_entry *entry = xmalloc(st_add4(sizeof(*entry), klen, vlen, 2)); |
6a364ced KB |
36 | hashmap_entry_init(entry, hash); |
37 | memcpy(entry->key, key, klen + 1); | |
38 | memcpy(entry->key + klen + 1, value, vlen + 1); | |
39 | return entry; | |
40 | } | |
41 | ||
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 | |
47 | #define TEST_SPARSE 8 | |
48 | #define TEST_ADD 16 | |
49 | #define TEST_SIZE 100000 | |
50 | ||
51 | static unsigned int hash(unsigned int method, unsigned int i, const char *key) | |
52 | { | |
3b9a2b07 | 53 | unsigned int hash = 0; |
6a364ced KB |
54 | switch (method & 3) |
55 | { | |
56 | case HASH_METHOD_FNV: | |
57 | hash = strhash(key); | |
58 | break; | |
59 | case HASH_METHOD_I: | |
60 | hash = i; | |
61 | break; | |
62 | case HASH_METHOD_IDIV10: | |
63 | hash = i / 10; | |
64 | break; | |
65 | case HASH_METHOD_0: | |
66 | hash = 0; | |
67 | break; | |
68 | } | |
69 | ||
70 | if (method & HASH_METHOD_X2) | |
71 | hash = 2 * hash; | |
72 | return hash; | |
73 | } | |
74 | ||
75 | /* | |
76 | * Test performance of hashmap.[ch] | |
77 | * Usage: time echo "perfhashmap method rounds" | test-hashmap | |
78 | */ | |
79 | static void perf_hashmap(unsigned int method, unsigned int rounds) | |
80 | { | |
81 | struct hashmap map; | |
82 | char buf[16]; | |
83 | struct test_entry **entries; | |
84 | unsigned int *hashes; | |
85 | unsigned int i, j; | |
86 | ||
aef6cf1e JK |
87 | ALLOC_ARRAY(entries, TEST_SIZE); |
88 | ALLOC_ARRAY(hashes, TEST_SIZE); | |
6a364ced KB |
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); | |
93 | } | |
94 | ||
95 | if (method & TEST_ADD) { | |
96 | /* test adding to the map */ | |
97 | for (j = 0; j < rounds; j++) { | |
6815d114 | 98 | hashmap_init(&map, test_entry_cmp, NULL, 0); |
6a364ced KB |
99 | |
100 | /* add entries */ | |
101 | for (i = 0; i < TEST_SIZE; i++) { | |
102 | hashmap_entry_init(entries[i], hashes[i]); | |
103 | hashmap_add(&map, entries[i]); | |
104 | } | |
105 | ||
106 | hashmap_free(&map, 0); | |
107 | } | |
108 | } else { | |
109 | /* test map lookups */ | |
6815d114 | 110 | hashmap_init(&map, test_entry_cmp, NULL, 0); |
6a364ced KB |
111 | |
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]); | |
117 | } | |
118 | ||
119 | for (j = 0; j < rounds; j++) { | |
120 | for (i = 0; i < TEST_SIZE; i++) { | |
ab73a9d1 KB |
121 | hashmap_get_from_hash(&map, hashes[i], |
122 | entries[i]->key); | |
6a364ced KB |
123 | } |
124 | } | |
125 | ||
126 | hashmap_free(&map, 0); | |
127 | } | |
128 | } | |
129 | ||
6a364ced KB |
130 | #define DELIM " \t\r\n" |
131 | ||
132 | /* | |
133 | * Read stdin line by line and print result of commands to stdout: | |
134 | * | |
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 | |
141 | * | |
142 | * perfhashmap method rounds -> test hashmap.[ch] performance | |
6a364ced | 143 | */ |
3f2e2297 | 144 | int cmd_main(int argc, const char **argv) |
6a364ced KB |
145 | { |
146 | char line[1024]; | |
147 | struct hashmap map; | |
148 | int icase; | |
149 | ||
150 | /* init hash map */ | |
151 | icase = argc > 1 && !strcmp("ignorecase", argv[1]); | |
6815d114 | 152 | hashmap_init(&map, test_entry_cmp, &icase, 0); |
6a364ced KB |
153 | |
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; | |
159 | ||
160 | /* break line into command and up to two parameters */ | |
161 | cmd = strtok(line, DELIM); | |
162 | /* ignore empty lines */ | |
163 | if (!cmd || *cmd == '#') | |
164 | continue; | |
165 | ||
166 | p1 = strtok(NULL, DELIM); | |
167 | if (p1) { | |
168 | l1 = strlen(p1); | |
169 | hash = icase ? strihash(p1) : strhash(p1); | |
170 | p2 = strtok(NULL, DELIM); | |
171 | if (p2) | |
172 | l2 = strlen(p2); | |
173 | } | |
174 | ||
175 | if (!strcmp("hash", cmd) && l1) { | |
176 | ||
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)); | |
180 | ||
181 | } else if (!strcmp("add", cmd) && l1 && l2) { | |
182 | ||
183 | /* create entry with key = p1, value = p2 */ | |
184 | entry = alloc_test_entry(hash, p1, l1, p2, l2); | |
185 | ||
186 | /* add to hashmap */ | |
187 | hashmap_add(&map, entry); | |
188 | ||
189 | } else if (!strcmp("put", cmd) && l1 && l2) { | |
190 | ||
191 | /* create entry with key = p1, value = p2 */ | |
192 | entry = alloc_test_entry(hash, p1, l1, p2, l2); | |
193 | ||
194 | /* add / replace entry */ | |
195 | entry = hashmap_put(&map, entry); | |
196 | ||
197 | /* print and free replaced entry, if any */ | |
198 | puts(entry ? get_value(entry) : "NULL"); | |
199 | free(entry); | |
200 | ||
201 | } else if (!strcmp("get", cmd) && l1) { | |
202 | ||
6a364ced | 203 | /* lookup entry in hashmap */ |
ab73a9d1 | 204 | entry = hashmap_get_from_hash(&map, hash, p1); |
6a364ced KB |
205 | |
206 | /* print result */ | |
207 | if (!entry) | |
208 | puts("NULL"); | |
209 | while (entry) { | |
210 | puts(get_value(entry)); | |
211 | entry = hashmap_get_next(&map, entry); | |
212 | } | |
213 | ||
214 | } else if (!strcmp("remove", cmd) && l1) { | |
215 | ||
216 | /* setup static key */ | |
217 | struct hashmap_entry key; | |
218 | hashmap_entry_init(&key, hash); | |
219 | ||
220 | /* remove entry from hashmap */ | |
221 | entry = hashmap_remove(&map, &key, p1); | |
222 | ||
223 | /* print result and free entry*/ | |
224 | puts(entry ? get_value(entry) : "NULL"); | |
225 | free(entry); | |
226 | ||
227 | } else if (!strcmp("iterate", cmd)) { | |
228 | ||
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)); | |
233 | ||
234 | } else if (!strcmp("size", cmd)) { | |
235 | ||
236 | /* print table sizes */ | |
8b604d19 JH |
237 | printf("%u %u\n", map.tablesize, |
238 | hashmap_get_size(&map)); | |
6a364ced | 239 | |
7b64d42d KB |
240 | } else if (!strcmp("intern", cmd) && l1) { |
241 | ||
242 | /* test that strintern works */ | |
243 | const char *i1 = strintern(p1); | |
244 | const char *i2 = strintern(p1); | |
245 | if (strcmp(i1, p1)) | |
246 | printf("strintern(%s) returns %s\n", p1, i1); | |
247 | else if (i1 == p1) | |
248 | printf("strintern(%s) returns input pointer\n", p1); | |
249 | else if (i1 != i2) | |
250 | printf("strintern(%s) != strintern(%s)", i1, i2); | |
251 | else | |
252 | printf("%s\n", i1); | |
253 | ||
6a364ced KB |
254 | } else if (!strcmp("perfhashmap", cmd) && l1 && l2) { |
255 | ||
256 | perf_hashmap(atoi(p1), atoi(p2)); | |
257 | ||
6a364ced KB |
258 | } else { |
259 | ||
260 | printf("Unknown command %s\n", cmd); | |
261 | ||
262 | } | |
263 | } | |
264 | ||
265 | hashmap_free(&map, 1); | |
266 | return 0; | |
267 | } |