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/**************************************************************************
*
* 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/crc32.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;
}
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