mirror of
https://gitlab.nic.cz/labs/bird.git
synced 2024-12-22 17:51:53 +00:00
d5e3272f3d
It's now possible to pause iteration through hash. This requires struct hash_iterator to be allocated somewhere handy. The iteration itself is surrounded by HASH_WALK_ITER and HASH_WALK_ITER_END. Call HASH_WALK_ITER_PUT to ask for pausing; it may still do some more iterations until it comes to a suitable pausing point. The iterator must be initalized to an empty structure. No cleanup is needed if iteration is abandoned inbetween.
346 lines
6.3 KiB
C
346 lines
6.3 KiB
C
/*
|
|
* BIRD Library -- Hash Tests
|
|
*
|
|
* (c) 2015 CZ.NIC z.s.p.o.
|
|
*
|
|
* Can be freely distributed and used under the terms of the GNU GPL.
|
|
*/
|
|
|
|
#undef LOCAL_DEBUG
|
|
|
|
#include "test/birdtest.h"
|
|
|
|
#include "lib/hash.h"
|
|
|
|
struct test_node {
|
|
struct test_node *next; /* Hash chain */
|
|
u32 key;
|
|
};
|
|
|
|
#define TEST_KEY(n) n->key
|
|
#define TEST_NEXT(n) n->next
|
|
#define TEST_EQ(n1,n2) n1 == n2
|
|
#define TEST_FN(n) (n) ^ u32_hash((n))
|
|
#define TEST_ORDER 13
|
|
#define TEST_PARAMS /TEST_ORDER, *2, 2, 2, TEST_ORDER, 20
|
|
#define TEST_REHASH test_rehash
|
|
|
|
HASH_DEFINE_REHASH_FN(TEST, struct test_node);
|
|
|
|
HASH(struct test_node) hash;
|
|
struct pool *my_pool;
|
|
|
|
#define MAX_NUM (1 << TEST_ORDER)
|
|
|
|
struct test_node nodes[MAX_NUM];
|
|
|
|
static void
|
|
print_rate_of_fulfilment(void)
|
|
{
|
|
int i;
|
|
int num_stacked_items = 0;
|
|
|
|
for (i = 0; i < MAX_NUM; i++)
|
|
if (!hash.data[i])
|
|
num_stacked_items++;
|
|
|
|
double percent_stacked_items = ((double)num_stacked_items/(double)MAX_NUM)*100.;
|
|
bt_debug("%d (%.2f %%) chained of %d hashes \n", num_stacked_items, percent_stacked_items, MAX_NUM);
|
|
}
|
|
|
|
#ifdef LOCAL_DEBUG
|
|
static void
|
|
dump_nodes(void)
|
|
{
|
|
int i;
|
|
for (i = 0; i < MAX_NUM; i++)
|
|
bt_debug("nodes[%3d] is at address %14p has .key %3d, .next %14p \n", i, &nodes[i], nodes[i].key, nodes[i].next);
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
init_hash_(uint order)
|
|
{
|
|
my_pool = rp_new(&root_pool, "Test pool");
|
|
|
|
HASH_INIT(hash, my_pool, order);
|
|
|
|
int i;
|
|
for (i = 0; i < MAX_NUM; i++)
|
|
{
|
|
nodes[i].key = i;
|
|
nodes[i].next = NULL;
|
|
}
|
|
|
|
bt_debug("MAX_NUM %d \n", MAX_NUM);
|
|
}
|
|
|
|
static void
|
|
init_hash(void)
|
|
{
|
|
init_hash_(TEST_ORDER);
|
|
}
|
|
|
|
static void
|
|
validate_filled_hash(void)
|
|
{
|
|
int i;
|
|
struct test_node *node;
|
|
for (i = 0; i < MAX_NUM; i++)
|
|
{
|
|
node = HASH_FIND(hash, TEST, nodes[i].key);
|
|
bt_assert_msg(node->key == nodes[i].key, "Hash should be filled, to find (%p) the node[%d] (%p) with .key = %u, .next %p", node, i, &nodes[i], nodes[i].key, nodes[i].next);
|
|
}
|
|
|
|
print_rate_of_fulfilment();
|
|
}
|
|
|
|
static void
|
|
validate_empty_hash(void)
|
|
{
|
|
int i;
|
|
struct test_node *node;
|
|
for (i = 0; i < MAX_NUM; i++)
|
|
{
|
|
node = HASH_FIND(hash, TEST, nodes[i].key);
|
|
bt_assert_msg(node == NULL, "Hash should be empty, to find (%p) the node[%d] (%p) with .key %u, .next %p", node, i, &nodes[i], nodes[i].key, nodes[i].next);
|
|
}
|
|
}
|
|
|
|
static void
|
|
fill_hash(void)
|
|
{
|
|
int i;
|
|
struct test_node *node;
|
|
|
|
for (i = 0; i < MAX_NUM; i++)
|
|
{
|
|
nodes[i].key = i;
|
|
node = &nodes[i];
|
|
HASH_INSERT(hash, TEST, node);
|
|
}
|
|
}
|
|
|
|
static int
|
|
t_insert_find(void)
|
|
{
|
|
init_hash();
|
|
fill_hash();
|
|
validate_filled_hash();
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
t_insert_find_random(void)
|
|
{
|
|
init_hash();
|
|
|
|
int i;
|
|
struct test_node *node;
|
|
for (i = 0; i < MAX_NUM; i++)
|
|
{
|
|
nodes[i].key = bt_random();
|
|
node = &nodes[i];
|
|
HASH_INSERT(hash, TEST, node);
|
|
}
|
|
|
|
validate_filled_hash();
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
t_insert2_find(void)
|
|
{
|
|
init_hash_(1);
|
|
|
|
int i;
|
|
struct test_node *node;
|
|
for (i = 0; i < MAX_NUM; i++)
|
|
{
|
|
nodes[i].key = i;
|
|
node = &nodes[i];
|
|
HASH_INSERT2(hash, TEST, my_pool, node);
|
|
}
|
|
bt_assert_msg(hash.order != 1, "The hash should auto-resize from order 2^1. The order of the hash is 2^%u.", hash.order);
|
|
|
|
validate_filled_hash();
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
t_walk(void)
|
|
{
|
|
init_hash();
|
|
fill_hash();
|
|
|
|
uint i;
|
|
uint check[MAX_NUM];
|
|
for (i = 0; i < MAX_NUM; i++)
|
|
check[i] = 0;
|
|
|
|
HASH_WALK(hash, next, n)
|
|
{
|
|
check[n->key]++;
|
|
}
|
|
HASH_WALK_END;
|
|
|
|
for (i = 0; i < MAX_NUM; i++)
|
|
bt_assert(check[i] == 1);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
t_walk_delsafe_delete(void)
|
|
{
|
|
init_hash();
|
|
fill_hash();
|
|
|
|
HASH_WALK_DELSAFE(hash, next, n)
|
|
{
|
|
HASH_DELETE(hash, TEST, n->key);
|
|
}
|
|
HASH_WALK_DELSAFE_END;
|
|
|
|
validate_empty_hash();
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
t_walk_delsafe_remove(void)
|
|
{
|
|
init_hash();
|
|
fill_hash();
|
|
|
|
HASH_WALK_DELSAFE(hash, next, n)
|
|
{
|
|
HASH_REMOVE(hash, TEST, n);
|
|
}
|
|
HASH_WALK_DELSAFE_END;
|
|
|
|
validate_empty_hash();
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
t_walk_delsafe_delete2(void)
|
|
{
|
|
init_hash();
|
|
fill_hash();
|
|
|
|
HASH_WALK_DELSAFE(hash, next, n)
|
|
{
|
|
HASH_DELETE2(hash, TEST, my_pool, n->key);
|
|
}
|
|
HASH_WALK_DELSAFE_END;
|
|
|
|
validate_empty_hash();
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
t_walk_delsafe_remove2(void)
|
|
{
|
|
init_hash();
|
|
fill_hash();
|
|
|
|
HASH_WALK_DELSAFE(hash, next, n)
|
|
{
|
|
HASH_REMOVE2(hash, TEST, my_pool, n);
|
|
}
|
|
HASH_WALK_DELSAFE_END;
|
|
|
|
validate_empty_hash();
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
t_walk_filter(void)
|
|
{
|
|
init_hash();
|
|
fill_hash();
|
|
|
|
uint i;
|
|
uint check[MAX_NUM];
|
|
for (i = 0; i < MAX_NUM; i++)
|
|
check[i] = 0;
|
|
|
|
HASH_WALK_FILTER(hash, next, n, m)
|
|
{
|
|
bt_assert(n == *m);
|
|
check[n->key]++;
|
|
}
|
|
HASH_WALK_FILTER_END;
|
|
|
|
for (i = 0; i < MAX_NUM; i++)
|
|
bt_assert(check[i] == 1);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
t_walk_iter(void)
|
|
{
|
|
init_hash();
|
|
fill_hash();
|
|
|
|
u32 hit = 0;
|
|
|
|
u32 prev_hash = ~0;
|
|
for (uint cnt = 0; cnt < MAX_NUM; )
|
|
{
|
|
u32 last_hash = ~0;
|
|
// printf("PUT!\n");
|
|
HASH_WALK_ITER(hash, TEST, n, hit)
|
|
{
|
|
cnt++;
|
|
u32 cur_hash = HASH_FN(hash, TEST, n->key);
|
|
/*
|
|
printf("C%08x L%08x P%08x K%08x H%08x N%p S%d I%ld\n",
|
|
cur_hash, last_hash, prev_hash, n->key, hit, n, _shift, n - &nodes[0]);
|
|
*/
|
|
|
|
if (last_hash == ~0U)
|
|
{
|
|
if (prev_hash != ~0U)
|
|
bt_assert(prev_hash < cur_hash);
|
|
last_hash = prev_hash = cur_hash;
|
|
}
|
|
else
|
|
bt_assert(last_hash == cur_hash);
|
|
|
|
if (cnt < MAX_NUM)
|
|
HASH_WALK_ITER_PUT;
|
|
}
|
|
HASH_WALK_ITER_END;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
bt_init(argc, argv);
|
|
|
|
bt_test_suite(t_insert_find, "HASH_INSERT and HASH_FIND");
|
|
bt_test_suite(t_insert_find_random, "HASH_INSERT pseudo-random keys and HASH_FIND");
|
|
bt_test_suite(t_insert2_find, "HASH_INSERT2 and HASH_FIND. HASH_INSERT2 is HASH_INSERT and a smart auto-resize function");
|
|
bt_test_suite(t_walk, "HASH_WALK");
|
|
bt_test_suite(t_walk_delsafe_delete, "HASH_WALK_DELSAFE and HASH_DELETE");
|
|
bt_test_suite(t_walk_delsafe_delete2, "HASH_WALK_DELSAFE and HASH_DELETE2. HASH_DELETE2 is HASH_DELETE and smart auto-resize function");
|
|
bt_test_suite(t_walk_delsafe_remove, "HASH_WALK_DELSAFE and HASH_REMOVE");
|
|
bt_test_suite(t_walk_delsafe_remove2, "HASH_WALK_DELSAFE and HASH_REMOVE2. HASH_REMOVE2 is HASH_REMOVE and smart auto-resize function");
|
|
bt_test_suite(t_walk_filter, "HASH_WALK_FILTER");
|
|
bt_test_suite(t_walk_iter, "HASH_WALK_ITER");
|
|
|
|
return bt_exit_value();
|
|
}
|