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| 4358 | Serge | 1 | /* |
| 2 | * Copyright © 2009 Intel Corporation |
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| 3 | * |
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| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 5 | * copy of this software and associated documentation files (the "Software"), |
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| 6 | * to deal in the Software without restriction, including without limitation |
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| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 9 | * Software is furnished to do so, subject to the following conditions: |
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| 10 | * |
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| 11 | * The above copyright notice and this permission notice (including the next |
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| 12 | * paragraph) shall be included in all copies or substantial portions of the |
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| 13 | * Software. |
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| 14 | * |
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| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
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| 21 | * IN THE SOFTWARE. |
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| 22 | * |
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| 23 | * Authors: |
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| 24 | * Eric Anholt |
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| 25 | */ |
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| 26 | |||
| 27 | #include |
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| 28 | #include |
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| 29 | #include |
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| 30 | #include |
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| 31 | #include "hash_table.h" |
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| 32 | |||
| 33 | static uint32_t |
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| 34 | key_value(const void *key) |
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| 35 | { |
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| 36 | return *(const uint32_t *)key; |
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| 37 | } |
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| 38 | |||
| 39 | static bool |
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| 40 | uint32_t_key_equals(const void *a, const void *b) |
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| 41 | { |
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| 42 | return key_value(a) == key_value(b); |
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| 43 | } |
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| 44 | |||
| 45 | static bool |
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| 46 | uint32_t_key_is_even(struct hash_entry *entry) |
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| 47 | { |
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| 48 | return (key_value(entry->key) & 1) == 0; |
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| 49 | } |
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| 50 | |||
| 51 | int |
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| 52 | main(int argc, char **argv) |
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| 53 | { |
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| 54 | struct hash_table *ht; |
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| 55 | struct hash_entry *entry; |
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| 56 | int size = 10000; |
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| 57 | uint32_t keys[size]; |
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| 58 | uint32_t i, random_value; |
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| 59 | |||
| 60 | ht = _mesa_hash_table_create(NULL, uint32_t_key_equals); |
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| 61 | |||
| 62 | for (i = 0; i < size; i++) { |
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| 63 | keys[i] = i; |
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| 64 | |||
| 65 | _mesa_hash_table_insert(ht, i, keys + i, NULL); |
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| 66 | } |
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| 67 | |||
| 68 | /* Test the no-predicate case. */ |
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| 69 | entry = _mesa_hash_table_random_entry(ht, NULL); |
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| 70 | assert(entry); |
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| 71 | |||
| 72 | /* Check that we're getting different entries and that the predicate |
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| 73 | * works. |
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| 74 | */ |
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| 75 | for (i = 0; i < 100; i++) { |
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| 76 | entry = _mesa_hash_table_random_entry(ht, uint32_t_key_is_even); |
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| 77 | assert(entry); |
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| 78 | assert((key_value(entry->key) & 1) == 0); |
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| 79 | if (i == 0 || key_value(entry->key) != random_value) |
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| 80 | break; |
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| 81 | random_value = key_value(entry->key); |
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| 82 | } |
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| 83 | assert(i != 100); |
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| 84 | |||
| 85 | _mesa_hash_table_destroy(ht, NULL); |
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| 86 | |||
| 87 | return 0; |
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| 88 | } |