diff options
Diffstat (limited to 'third_party/git/t/helper/test-hashmap.c')
-rw-r--r-- | third_party/git/t/helper/test-hashmap.c | 267 |
1 files changed, 0 insertions, 267 deletions
diff --git a/third_party/git/t/helper/test-hashmap.c b/third_party/git/t/helper/test-hashmap.c deleted file mode 100644 index f38706216f44..000000000000 --- a/third_party/git/t/helper/test-hashmap.c +++ /dev/null @@ -1,267 +0,0 @@ -#include "test-tool.h" -#include "git-compat-util.h" -#include "hashmap.h" -#include "strbuf.h" - -struct test_entry -{ - int padding; /* hashmap entry no longer needs to be the first member */ - struct hashmap_entry ent; - /* key and value as two \0-terminated strings */ - char key[FLEX_ARRAY]; -}; - -static const char *get_value(const struct test_entry *e) -{ - return e->key + strlen(e->key) + 1; -} - -static int test_entry_cmp(const void *cmp_data, - const struct hashmap_entry *eptr, - const struct hashmap_entry *entry_or_key, - const void *keydata) -{ - const int ignore_case = cmp_data ? *((int *)cmp_data) : 0; - const struct test_entry *e1, *e2; - const char *key = keydata; - - e1 = container_of(eptr, const struct test_entry, ent); - e2 = container_of(entry_or_key, const struct test_entry, ent); - - if (ignore_case) - return strcasecmp(e1->key, key ? key : e2->key); - else - return strcmp(e1->key, key ? key : e2->key); -} - -static struct test_entry *alloc_test_entry(unsigned int hash, - char *key, char *value) -{ - size_t klen = strlen(key); - size_t vlen = strlen(value); - struct test_entry *entry = xmalloc(st_add4(sizeof(*entry), klen, vlen, 2)); - hashmap_entry_init(&entry->ent, hash); - memcpy(entry->key, key, klen + 1); - memcpy(entry->key + klen + 1, value, vlen + 1); - return entry; -} - -#define HASH_METHOD_FNV 0 -#define HASH_METHOD_I 1 -#define HASH_METHOD_IDIV10 2 -#define HASH_METHOD_0 3 -#define HASH_METHOD_X2 4 -#define TEST_SPARSE 8 -#define TEST_ADD 16 -#define TEST_SIZE 100000 - -static unsigned int hash(unsigned int method, unsigned int i, const char *key) -{ - unsigned int hash = 0; - switch (method & 3) - { - case HASH_METHOD_FNV: - hash = strhash(key); - break; - case HASH_METHOD_I: - hash = i; - break; - case HASH_METHOD_IDIV10: - hash = i / 10; - break; - case HASH_METHOD_0: - hash = 0; - break; - } - - if (method & HASH_METHOD_X2) - hash = 2 * hash; - return hash; -} - -/* - * Test performance of hashmap.[ch] - * Usage: time echo "perfhashmap method rounds" | test-tool hashmap - */ -static void perf_hashmap(unsigned int method, unsigned int rounds) -{ - struct hashmap map; - char buf[16]; - struct test_entry **entries; - unsigned int *hashes; - unsigned int i, j; - - ALLOC_ARRAY(entries, TEST_SIZE); - ALLOC_ARRAY(hashes, TEST_SIZE); - for (i = 0; i < TEST_SIZE; i++) { - xsnprintf(buf, sizeof(buf), "%i", i); - entries[i] = alloc_test_entry(0, buf, ""); - hashes[i] = hash(method, i, entries[i]->key); - } - - if (method & TEST_ADD) { - /* test adding to the map */ - for (j = 0; j < rounds; j++) { - hashmap_init(&map, test_entry_cmp, NULL, 0); - - /* add entries */ - for (i = 0; i < TEST_SIZE; i++) { - hashmap_entry_init(&entries[i]->ent, hashes[i]); - hashmap_add(&map, &entries[i]->ent); - } - - hashmap_free(&map); - } - } else { - /* test map lookups */ - hashmap_init(&map, test_entry_cmp, NULL, 0); - - /* fill the map (sparsely if specified) */ - j = (method & TEST_SPARSE) ? TEST_SIZE / 10 : TEST_SIZE; - for (i = 0; i < j; i++) { - hashmap_entry_init(&entries[i]->ent, hashes[i]); - hashmap_add(&map, &entries[i]->ent); - } - - for (j = 0; j < rounds; j++) { - for (i = 0; i < TEST_SIZE; i++) { - hashmap_get_from_hash(&map, hashes[i], - entries[i]->key); - } - } - - hashmap_free(&map); - } -} - -#define DELIM " \t\r\n" - -/* - * Read stdin line by line and print result of commands to stdout: - * - * hash key -> strhash(key) memhash(key) strihash(key) memihash(key) - * put key value -> NULL / old value - * get key -> NULL / value - * remove key -> NULL / old value - * iterate -> key1 value1\nkey2 value2\n... - * size -> tablesize numentries - * - * perfhashmap method rounds -> test hashmap.[ch] performance - */ -int cmd__hashmap(int argc, const char **argv) -{ - struct strbuf line = STRBUF_INIT; - struct hashmap map; - int icase; - - /* init hash map */ - icase = argc > 1 && !strcmp("ignorecase", argv[1]); - hashmap_init(&map, test_entry_cmp, &icase, 0); - - /* process commands from stdin */ - while (strbuf_getline(&line, stdin) != EOF) { - char *cmd, *p1 = NULL, *p2 = NULL; - unsigned int hash = 0; - struct test_entry *entry; - - /* break line into command and up to two parameters */ - cmd = strtok(line.buf, DELIM); - /* ignore empty lines */ - if (!cmd || *cmd == '#') - continue; - - p1 = strtok(NULL, DELIM); - if (p1) { - hash = icase ? strihash(p1) : strhash(p1); - p2 = strtok(NULL, DELIM); - } - - if (!strcmp("add", cmd) && p1 && p2) { - - /* create entry with key = p1, value = p2 */ - entry = alloc_test_entry(hash, p1, p2); - - /* add to hashmap */ - hashmap_add(&map, &entry->ent); - - } else if (!strcmp("put", cmd) && p1 && p2) { - - /* create entry with key = p1, value = p2 */ - entry = alloc_test_entry(hash, p1, p2); - - /* add / replace entry */ - entry = hashmap_put_entry(&map, entry, ent); - - /* print and free replaced entry, if any */ - puts(entry ? get_value(entry) : "NULL"); - free(entry); - - } else if (!strcmp("get", cmd) && p1) { - /* lookup entry in hashmap */ - entry = hashmap_get_entry_from_hash(&map, hash, p1, - struct test_entry, ent); - - /* print result */ - if (!entry) - puts("NULL"); - hashmap_for_each_entry_from(&map, entry, ent) - puts(get_value(entry)); - - } else if (!strcmp("remove", cmd) && p1) { - - /* setup static key */ - struct hashmap_entry key; - struct hashmap_entry *rm; - hashmap_entry_init(&key, hash); - - /* remove entry from hashmap */ - rm = hashmap_remove(&map, &key, p1); - entry = rm ? container_of(rm, struct test_entry, ent) - : NULL; - - /* print result and free entry*/ - puts(entry ? get_value(entry) : "NULL"); - free(entry); - - } else if (!strcmp("iterate", cmd)) { - struct hashmap_iter iter; - - hashmap_for_each_entry(&map, &iter, entry, - ent /* member name */) - printf("%s %s\n", entry->key, get_value(entry)); - - } else if (!strcmp("size", cmd)) { - - /* print table sizes */ - printf("%u %u\n", map.tablesize, - hashmap_get_size(&map)); - - } else if (!strcmp("intern", cmd) && p1) { - - /* test that strintern works */ - const char *i1 = strintern(p1); - const char *i2 = strintern(p1); - if (strcmp(i1, p1)) - printf("strintern(%s) returns %s\n", p1, i1); - else if (i1 == p1) - printf("strintern(%s) returns input pointer\n", p1); - else if (i1 != i2) - printf("strintern(%s) != strintern(%s)", i1, i2); - else - printf("%s\n", i1); - - } else if (!strcmp("perfhashmap", cmd) && p1 && p2) { - - perf_hashmap(atoi(p1), atoi(p2)); - - } else { - - printf("Unknown command %s\n", cmd); - - } - } - - strbuf_release(&line); - hashmap_free_entries(&map, struct test_entry, ent); - return 0; -} |