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/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "src/core/statistics/hash_table.h"
#include "src/core/support/murmur_hash.h"
#include "src/core/support/string.h"
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <grpc/support/time.h>
#include "test/core/util/test_config.h"
static uint64_t hash64(const void *k) {
size_t len = strlen(k);
uint64_t higher = gpr_murmur_hash3((const char *)k, len / 2, 0);
return higher << 32 |
gpr_murmur_hash3((const char *)(k) + len / 2, len - len / 2, 0);
}
static int cmp_str_keys(const void *k1, const void *k2) {
return strcmp((const char *)k1, (const char *)k2);
}
static uint64_t force_collision(const void *k) {
return (1997 + hash64(k) % 3);
}
static void free_data(void *data) { gpr_free(data); }
/* Basic tests that empty hash table can be created and destroyed. */
static void test_create_table(void) {
/* Create table with uint64 key type */
census_ht *ht = NULL;
census_ht_option ht_options = {CENSUS_HT_UINT64, 1999, NULL, NULL, NULL,
NULL};
ht = census_ht_create(&ht_options);
GPR_ASSERT(ht != NULL);
GPR_ASSERT(census_ht_get_size(ht) == 0);
census_ht_destroy(ht);
/* Create table with pointer key type */
ht = NULL;
ht_options.key_type = CENSUS_HT_POINTER;
ht_options.hash = &hash64;
ht_options.compare_keys = &cmp_str_keys;
ht = census_ht_create(&ht_options);
GPR_ASSERT(ht != NULL);
GPR_ASSERT(census_ht_get_size(ht) == 0);
census_ht_destroy(ht);
}
static void test_table_with_int_key(void) {
census_ht_option opt = {CENSUS_HT_UINT64, 7, NULL, NULL, NULL, NULL};
census_ht *ht = census_ht_create(&opt);
uint64_t i = 0;
uint64_t sum_of_keys = 0;
size_t num_elements;
census_ht_kv *elements = NULL;
GPR_ASSERT(ht != NULL);
GPR_ASSERT(census_ht_get_size(ht) == 0);
elements = census_ht_get_all_elements(ht, &num_elements);
GPR_ASSERT(num_elements == 0);
GPR_ASSERT(elements == NULL);
for (i = 0; i < 20; ++i) {
census_ht_key key;
key.val = i;
census_ht_insert(ht, key, (void *)(intptr_t)i);
GPR_ASSERT(census_ht_get_size(ht) == i + 1);
}
for (i = 0; i < 20; i++) {
uint64_t *val = NULL;
census_ht_key key;
key.val = i;
val = census_ht_find(ht, key);
GPR_ASSERT(val == (void *)(intptr_t)i);
}
elements = census_ht_get_all_elements(ht, &num_elements);
GPR_ASSERT(elements != NULL);
GPR_ASSERT(num_elements == 20);
for (i = 0; i < num_elements; i++) {
sum_of_keys += elements[i].k.val;
}
GPR_ASSERT(sum_of_keys == 190);
gpr_free(elements);
census_ht_destroy(ht);
}
/* Test that there is no memory leak when keys and values are owned by table. */
static void test_value_and_key_deleter(void) {
census_ht_option opt = {CENSUS_HT_POINTER, 7, &hash64, &cmp_str_keys,
&free_data, &free_data};
census_ht *ht = census_ht_create(&opt);
census_ht_key key;
char *val = NULL;
char *val2 = NULL;
key.ptr = gpr_malloc(100);
val = gpr_malloc(10);
strcpy(val, "value");
strcpy(key.ptr, "some string as a key");
GPR_ASSERT(ht != NULL);
GPR_ASSERT(census_ht_get_size(ht) == 0);
census_ht_insert(ht, key, val);
GPR_ASSERT(census_ht_get_size(ht) == 1);
val = census_ht_find(ht, key);
GPR_ASSERT(val != NULL);
GPR_ASSERT(strcmp(val, "value") == 0);
/* Insert same key different value, old value is overwritten. */
val2 = gpr_malloc(10);
strcpy(val2, "v2");
census_ht_insert(ht, key, val2);
GPR_ASSERT(census_ht_get_size(ht) == 1);
val2 = census_ht_find(ht, key);
GPR_ASSERT(val2 != NULL);
GPR_ASSERT(strcmp(val2, "v2") == 0);
census_ht_destroy(ht);
}
/* Test simple insert and erase operations. */
static void test_simple_add_and_erase(void) {
census_ht_option opt = {CENSUS_HT_UINT64, 7, NULL, NULL, NULL, NULL};
census_ht *ht = census_ht_create(&opt);
GPR_ASSERT(ht != NULL);
GPR_ASSERT(census_ht_get_size(ht) == 0);
{
census_ht_key key;
int val = 3;
key.val = 2;
census_ht_insert(ht, key, (void *)&val);
GPR_ASSERT(census_ht_get_size(ht) == 1);
census_ht_erase(ht, key);
GPR_ASSERT(census_ht_get_size(ht) == 0);
/* Erasing a key from an empty table should be noop. */
census_ht_erase(ht, key);
GPR_ASSERT(census_ht_get_size(ht) == 0);
/* Erasing a non-existant key from a table should be noop. */
census_ht_insert(ht, key, (void *)&val);
key.val = 3;
census_ht_insert(ht, key, (void *)&val);
key.val = 9;
census_ht_insert(ht, key, (void *)&val);
GPR_ASSERT(census_ht_get_size(ht) == 3);
key.val = 1;
census_ht_erase(ht, key);
/* size unchanged after deleting non-existant key. */
GPR_ASSERT(census_ht_get_size(ht) == 3);
/* size decrease by 1 after deleting an existant key. */
key.val = 2;
census_ht_erase(ht, key);
GPR_ASSERT(census_ht_get_size(ht) == 2);
}
census_ht_destroy(ht);
}
static void test_insertion_and_deletion_with_high_collision_rate(void) {
census_ht_option opt = {CENSUS_HT_POINTER, 13, &force_collision,
&cmp_str_keys, NULL, NULL};
census_ht *ht = census_ht_create(&opt);
char key_str[1000][GPR_LTOA_MIN_BUFSIZE];
uint64_t val = 0;
unsigned i = 0;
for (i = 0; i < 1000; i++) {
census_ht_key key;
key.ptr = key_str[i];
gpr_ltoa(i, key_str[i]);
census_ht_insert(ht, key, (void *)(&val));
gpr_log(GPR_INFO, "%d\n", i);
GPR_ASSERT(census_ht_get_size(ht) == (i + 1));
}
for (i = 0; i < 1000; i++) {
census_ht_key key;
key.ptr = key_str[i];
census_ht_erase(ht, key);
GPR_ASSERT(census_ht_get_size(ht) == (999 - i));
}
census_ht_destroy(ht);
}
static void test_table_with_string_key(void) {
census_ht_option opt = {CENSUS_HT_POINTER, 7, &hash64, &cmp_str_keys, NULL,
NULL};
census_ht *ht = census_ht_create(&opt);
const char *keys[] = {"k1", "a", "000", "apple",
"banana_a_long_long_long_banana", "%$", "111", "foo",
"b"};
const int vals[] = {0, 1, 2, 3, 4, 5, 6, 7, 8};
int i = 0;
GPR_ASSERT(ht != NULL);
GPR_ASSERT(census_ht_get_size(ht) == 0);
for (i = 0; i < 9; i++) {
census_ht_key key;
key.ptr = (void *)(keys[i]);
census_ht_insert(ht, key, (void *)(vals + i));
}
GPR_ASSERT(census_ht_get_size(ht) == 9);
for (i = 0; i < 9; i++) {
census_ht_key key;
int *val_ptr;
key.ptr = (void *)(keys[i]);
val_ptr = census_ht_find(ht, key);
GPR_ASSERT(*val_ptr == vals[i]);
}
{
/* inserts duplicate keys */
census_ht_key key;
int *val_ptr = NULL;
key.ptr = (void *)(keys[2]);
census_ht_insert(ht, key, (void *)(vals + 8));
/* expect value to be over written by new insertion */
GPR_ASSERT(census_ht_get_size(ht) == 9);
val_ptr = census_ht_find(ht, key);
GPR_ASSERT(*val_ptr == vals[8]);
}
for (i = 0; i < 9; i++) {
census_ht_key key;
int *val_ptr;
uint32_t expected_tbl_sz = 9 - i;
GPR_ASSERT(census_ht_get_size(ht) == expected_tbl_sz);
key.ptr = (void *)(keys[i]);
val_ptr = census_ht_find(ht, key);
GPR_ASSERT(val_ptr != NULL);
census_ht_erase(ht, key);
GPR_ASSERT(census_ht_get_size(ht) == expected_tbl_sz - 1);
val_ptr = census_ht_find(ht, key);
GPR_ASSERT(val_ptr == NULL);
}
census_ht_destroy(ht);
}
static void test_insertion_with_same_key(void) {
census_ht_option opt = {CENSUS_HT_UINT64, 11, NULL, NULL, NULL, NULL};
census_ht *ht = census_ht_create(&opt);
census_ht_key key;
const char vals[] = {'a', 'b', 'c'};
char *val_ptr;
key.val = 3;
census_ht_insert(ht, key, (void *)&(vals[0]));
GPR_ASSERT(census_ht_get_size(ht) == 1);
val_ptr = (char *)census_ht_find(ht, key);
GPR_ASSERT(val_ptr != NULL);
GPR_ASSERT(*val_ptr == 'a');
key.val = 4;
val_ptr = (char *)census_ht_find(ht, key);
GPR_ASSERT(val_ptr == NULL);
key.val = 3;
census_ht_insert(ht, key, (void *)&(vals[1]));
GPR_ASSERT(census_ht_get_size(ht) == 1);
val_ptr = (char *)census_ht_find(ht, key);
GPR_ASSERT(val_ptr != NULL);
GPR_ASSERT(*val_ptr == 'b');
census_ht_insert(ht, key, (void *)&(vals[2]));
GPR_ASSERT(census_ht_get_size(ht) == 1);
val_ptr = (char *)census_ht_find(ht, key);
GPR_ASSERT(val_ptr != NULL);
GPR_ASSERT(*val_ptr == 'c');
census_ht_destroy(ht);
}
int main(int argc, char **argv) {
grpc_test_init(argc, argv);
test_create_table();
test_simple_add_and_erase();
test_table_with_int_key();
test_table_with_string_key();
test_value_and_key_deleter();
test_insertion_with_same_key();
test_insertion_and_deletion_with_high_collision_rate();
return 0;
}
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