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e399dc3544
Signed-off-by: Yonggang Luo <luoyonggang@gmail.com> Acked-by: Jesse Natalie <jenatali@microsoft.com> Acked-by: Eric Engestrom <eric@igalia.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19546>
102 lines
3.5 KiB
C
102 lines
3.5 KiB
C
/*
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* Copyright © 2012 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Eric Anholt <eric@anholt.net>
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*/
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#undef NDEBUG
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include "util/hash_table.h"
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static void entry_free(struct hash_entry *entry)
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{
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free((void *)entry->key);
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}
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int
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main(int argc, char **argv)
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{
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struct hash_table *ht;
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const char *str1 = strdup("test1");
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const char *str2 = strdup("test2");
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const char *str3 = strdup("test3");
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struct hash_entry *entry1, *entry2;
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uint32_t bad_hash = 5;
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int i;
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(void) argc;
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(void) argv;
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ht = _mesa_hash_table_create(NULL, NULL, _mesa_key_string_equal);
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/* Insert some items. Inserting 3 items forces a rehash and the new
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* table size is big enough that we don't get rehashes later.
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*/
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_mesa_hash_table_insert_pre_hashed(ht, bad_hash, str1, NULL);
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_mesa_hash_table_insert_pre_hashed(ht, bad_hash, str2, NULL);
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_mesa_hash_table_insert_pre_hashed(ht, bad_hash, str3, NULL);
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entry1 = _mesa_hash_table_search_pre_hashed(ht, bad_hash, str1);
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assert(entry1->key == str1);
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entry2 = _mesa_hash_table_search_pre_hashed(ht, bad_hash, str2);
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assert(entry2->key == str2);
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/* Check that we can still find #1 after inserting #2 */
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entry1 = _mesa_hash_table_search_pre_hashed(ht, bad_hash, str1);
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assert(entry1->key == str1);
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/* Remove the collided entry and look again. */
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_mesa_hash_table_remove(ht, entry1);
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entry2 = _mesa_hash_table_search_pre_hashed(ht, bad_hash, str2);
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assert(entry2->key == str2);
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/* Try inserting #2 again and make sure it gets overwritten */
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_mesa_hash_table_insert_pre_hashed(ht, bad_hash, str2, NULL);
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entry2 = _mesa_hash_table_search_pre_hashed(ht, bad_hash, str2);
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hash_table_foreach(ht, search_entry) {
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assert(search_entry == entry2 || search_entry->key != str2);
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}
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/* Put str1 back, then spam junk into the table to force a
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* resize and make sure we can still find them both.
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*/
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_mesa_hash_table_insert_pre_hashed(ht, bad_hash, str1, NULL);
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for (i = 0; i < 100; i++) {
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char *key = malloc(10);
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sprintf(key, "spam%d", i);
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_mesa_hash_table_insert_pre_hashed(ht, _mesa_hash_string(key), key, NULL);
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}
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entry1 = _mesa_hash_table_search_pre_hashed(ht, bad_hash, str1);
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assert(entry1->key == str1);
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entry2 = _mesa_hash_table_search_pre_hashed(ht, bad_hash, str2);
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assert(entry2->key == str2);
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_mesa_hash_table_destroy(ht, entry_free);
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return 0;
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}
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