| /************************************************************************** |
| * |
| * Copyright 2010 VMware, Inc. |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sub license, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial portions |
| * of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
| * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR |
| * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| **************************************************************************/ |
| |
| |
| /* |
| * Test case for u_cache. |
| */ |
| |
| |
| #include <assert.h> |
| #include <stdio.h> |
| |
| #include "util/u_cache.h" |
| #include "util/u_hash.h" |
| |
| |
| typedef uint32_t cache_test_key; |
| typedef uint32_t cache_test_value; |
| |
| |
| static uint32_t |
| cache_test_hash(const void *key) |
| { |
| return util_hash_crc32(key, sizeof(cache_test_key)); |
| } |
| |
| |
| static void |
| cache_test_destroy(void *key, void *value) |
| { |
| free(key); |
| free(value); |
| } |
| |
| |
| static int |
| cache_test_compare(const void *key1, const void *key2) { |
| return !(key1 == key2); |
| } |
| |
| |
| int main() { |
| unsigned cache_size; |
| unsigned cache_count; |
| |
| for (cache_size = 2; cache_size < (1 << 15); cache_size *= 2) { |
| for (cache_count = (cache_size << 5); cache_count < (cache_size << 10); cache_count *= 2) { |
| struct util_cache * cache; |
| cache_test_key *key; |
| cache_test_value *value_in; |
| cache_test_value *value_out; |
| int i; |
| |
| printf("Testing cache size of %d with %d values.\n", cache_size, cache_count); |
| |
| cache = util_cache_create(cache_test_hash, |
| cache_test_compare, |
| cache_test_destroy, |
| cache_size); |
| |
| /* |
| * Retrieve a value from an empty cache. |
| */ |
| key = malloc(sizeof(cache_test_key)); |
| *key = 0xdeadbeef; |
| value_out = (cache_test_value *) util_cache_get(cache, key); |
| assert(value_out == NULL); |
| free(key); |
| |
| |
| /* |
| * Repeatedly insert into and retrieve values from the cache. |
| */ |
| for (i = 0; i < cache_count; i++) { |
| key = malloc(sizeof(cache_test_key)); |
| value_in = malloc(sizeof(cache_test_value)); |
| |
| *key = rand(); |
| *value_in = rand(); |
| util_cache_set(cache, key, value_in); |
| |
| value_out = util_cache_get(cache, key); |
| assert(value_out != NULL); |
| assert(value_in == value_out); |
| assert(*value_in == *value_out); |
| } |
| |
| /* |
| * In debug builds, this will trigger a self-check by the cache of |
| * the distribution of hits in its internal cache entries. |
| */ |
| util_cache_destroy(cache); |
| } |
| } |
| |
| return 0; |
| } |