1/*
2 * Copyright © 2009 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 *
23 * Authors:
24 *    Eric Anholt <eric@anholt.net>
25 */
26
27#undef NDEBUG
28
29#include <stdlib.h>
30#include <stdio.h>
31#include <string.h>
32#include <assert.h>
33#include "hash_table.h"
34
35#define SIZE 10000
36
37static uint32_t
38key_value(const void *key)
39{
40   return *(const uint32_t *)key;
41}
42
43static bool
44uint32_t_key_equals(const void *a, const void *b)
45{
46   return key_value(a) == key_value(b);
47}
48
49static bool
50uint32_t_key_is_even(struct hash_entry *entry)
51{
52   return (key_value(entry->key) & 1) == 0;
53}
54
55int
56main(int argc, char **argv)
57{
58   struct hash_table *ht;
59   struct hash_entry *entry;
60   uint32_t keys[SIZE];
61   uint32_t i, random_value = 0;
62
63   (void) argc;
64   (void) argv;
65
66   ht = _mesa_hash_table_create(NULL, key_value, uint32_t_key_equals);
67
68   for (i = 0; i < SIZE; i++) {
69      keys[i] = i;
70
71      _mesa_hash_table_insert(ht, keys + i, NULL);
72   }
73
74   /* Test the no-predicate case. */
75   entry = _mesa_hash_table_random_entry(ht, NULL);
76   assert(entry);
77
78   /* Check that we're getting different entries and that the predicate
79    * works.
80    */
81   for (i = 0; i < 100; i++) {
82      entry = _mesa_hash_table_random_entry(ht, uint32_t_key_is_even);
83      assert(entry);
84      assert((key_value(entry->key) & 1) == 0);
85      if (i == 0 || key_value(entry->key) != random_value)
86         break;
87      random_value = key_value(entry->key);
88   }
89   assert(i != 100);
90
91   _mesa_hash_table_destroy(ht, NULL);
92
93   return 0;
94}
95