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/*
* Copyright © 2009 Intel Corporation
*
* 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, sublicense,
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*
* Authors:
* Eric Anholt <eric@anholt.net>
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "hash_table.h"
#include "fnv_hash.h"
static uint32_t
key_value(const void *key)
{
return *(const uint32_t *)key;
}
static int
uint32_t_key_equals(const void *a, const void *b)
{
return key_value(a) == key_value(b);
}
static int
uint32_t_key_is_even(struct hash_entry *entry)
{
return (key_value(entry->key) & 1) == 0;
}
int
main(int argc, char **argv)
{
struct hash_table *ht;
struct hash_entry *entry;
int size = 10000;
uint32_t keys[size];
uint32_t i, random_value;
ht = hash_table_create(uint32_t_key_equals);
for (i = 0; i < size; i++) {
keys[i] = i;
hash_table_insert(ht, i, keys + i, NULL);
}
/* Test the no-predicate case. */
entry = hash_table_random_entry(ht, NULL);
assert(entry);
/* Check that we're getting different entries and that the predicate
* works.
*/
for (i = 0; i < 100; i++) {
entry = hash_table_random_entry(ht, uint32_t_key_is_even);
assert(entry);
assert((key_value(entry->key) & 1) == 0);
if (i == 0 || key_value(entry->key) != random_value)
break;
random_value = key_value(entry->key);
}
assert(i != 100);
hash_table_destroy(NULL, NULL);
return 0;
}
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