| /* |
| * |
| * Copyright 2015 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "src/core/ext/census/hash_table.h" |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/time.h> |
| #include "src/core/lib/support/murmur_hash.h" |
| #include "src/core/lib/support/string.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; |
| } |