static void
test_clear()
{
genhash_t* h=get_test_hash();
assert(genhash_size(h) == 26);
genhash_clear(h);
assert(genhash_size(h) == 0);
genhash_free(h);
}
static void
test_function_update()
{
genhash_t* h=genhash_init(4, get_string_hash_ops());
int type=0;
assert_hash_val(NULL, h, "x");
type=genhash_fun_update(h, "x", update_fun, free_str, NULL);
assert(type == NEW);
assert_hash_val("", h, "x");
type=genhash_fun_update(h, "x", update_fun, free_str, NULL);
assert(type == MODIFICATION);
assert_hash_val("x", h, "x");
type=genhash_fun_update(h, "x", update_fun, free_str, NULL);
assert(type == MODIFICATION);
assert_hash_val("xx", h, "x");
assert(genhash_size(h) == 1);
genhash_free(h);
}
static void
test_multiple_keys()
{
genhash_t* h=genhash_init(1, get_string_hash_ops());
int deleted = 0, i = 0;
/* Pollute the space to allow some hash collisions */
for(i=0; i<16000; i++) {
char key[8];
snprintf(key, sizeof(key), "k%d", i);
genhash_store(h, key, key);
assert_hash_val(key, h, key);
}
assert_hash_val(NULL, h, "x");
genhash_store(h, "x", "a");
genhash_store(h, "x", "b");
assert_hash_val("b", h, "x");
deleted=genhash_delete(h, "x");
assert(deleted == 1);
assert_hash_val("a", h, "x");
deleted=genhash_delete(h, "x");
assert(deleted == 1);
assert_hash_val(NULL, h, "x");
deleted=genhash_delete(h, "x");
assert(deleted == 0);
genhash_store(h, "x", "a");
genhash_store(h, "x", "b");
genhash_store(h, "y", "yz");
assert(genhash_size(h) == 16003);
assert(genhash_size_for_key(h, "x") == 2);
deleted=genhash_delete_all(h, "x");
assert(deleted == 2);
genhash_free(h);
}
void mcache_set(mcache *m, void *it,
uint64_t exptime,
bool add_only,
bool mod_exptime_if_exists) {
assert(it);
assert(m->funcs);
assert(m->funcs->item_get_next(it) == NULL);
assert(m->funcs->item_get_prev(it) == NULL);
if (m == NULL) {
return;
}
/* TODO: Our lock areas are possibly too wide. */
if (m->lock) {
cb_mutex_enter(m->lock);
}
if (m->map != NULL) {
/* Evict some items if necessary. */
int i;
for (i = 0; m->lru_tail != NULL && i < 20; i++) {
void *last_it;
if ((uint32_t)genhash_size(m->map) < m->max) {
break;
}
last_it = m->lru_tail;
mcache_item_unlink(m, last_it);
if (m->key_alloc) {
int len = m->funcs->item_key_len(last_it);
char buf[KEY_MAX_LENGTH + 10];
memcpy(buf, m->funcs->item_key(last_it), len);
buf[len] = '\0';
genhash_delete(m->map, buf);
} else {
genhash_delete(m->map, m->funcs->item_key(last_it));
}
m->tot_evictions++;
}
if ((uint32_t)genhash_size(m->map) < m->max) {
char *key = m->funcs->item_key(it);
int key_len = m->funcs->item_key_len(it);
char *key_buf = NULL;
if (m->key_alloc) {
/* The ITEM_key is not NULL or space terminated, */
/* and we need a copy, too, for hashtable ownership. */
/* TODO: Move this outside the lock area? */
key_buf = malloc(key_len + 1);
if (key_buf != NULL) {
memcpy(key_buf, key, key_len);
key_buf[key_len] = '\0';
key = key_buf;
} else {
key = NULL;
}
}
if (key != NULL) {
void *existing = add_only ? genhash_find(m->map, key) : NULL;
if (existing != NULL) {
mcache_item_unlink(m, existing);
mcache_item_touch(m, existing);
if (mod_exptime_if_exists) {
m->funcs->item_set_exptime(existing, exptime);
}
m->tot_add_skips++;
if (settings.verbose > 1) {
moxi_log_write("mcache add-skip: %s\n", key);
}
if (key_buf != NULL) {
free(key_buf);
}
} else {
m->funcs->item_set_exptime(it, exptime);
m->funcs->item_add_ref(it);
genhash_update(m->map, key, it);
m->tot_adds++;
m->tot_add_bytes += m->funcs->item_len(it);
if (settings.verbose > 1) {
moxi_log_write("mcache add: %s\n", key);
}
}
} else {
m->tot_add_fails++;
}
} else {
m->tot_add_fails++;
}
}
if (m->lock) {
cb_mutex_exit(m->lock);
}
}
