mirror of
https://gitlab.freedesktop.org/pipewire/pipewire
synced 2024-09-19 16:01:45 +00:00
146 lines
3.6 KiB
C
146 lines
3.6 KiB
C
/* Spa
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*
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* Copyright © 2020 Wim Taymans
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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
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <time.h>
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#include <assert.h>
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#include <spa/utils/dict.h>
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#include <spa/utils/string.h>
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#define MAX_COUNT 100000
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#define MAX_ITEMS 1000
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static struct spa_dict_item items[MAX_ITEMS];
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static char values[MAX_ITEMS][32];
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static void gen_values()
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{
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uint32_t i, j, idx;
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static const char chars[] = "abcdefghijklmnopqrstuvwxyz.:*ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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for (i = 0; i < MAX_ITEMS; i++) {
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for (j = 0; j < 32; j++) {
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idx = random() % sizeof(chars);
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values[i][j] = chars[idx];
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}
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idx = random() % 16;
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values[i][idx + 16] = 0;
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}
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}
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static void gen_dict(struct spa_dict *dict, uint32_t n_items)
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{
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uint32_t i, idx;
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for (i = 0; i < n_items; i++) {
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idx = random() % MAX_ITEMS;
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items[i] = SPA_DICT_ITEM_INIT(values[idx], values[idx]);
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}
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dict->items = items;
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dict->n_items = n_items;
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dict->flags = 0;
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}
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static void test_query(const struct spa_dict *dict)
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{
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uint32_t i, idx;
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const char *str;
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for (i = 0; i < MAX_COUNT; i++) {
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idx = random() % dict->n_items;
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str = spa_dict_lookup(dict, dict->items[idx].key);
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assert(spa_streq(str, dict->items[idx].value));
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}
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}
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static void test_lookup(struct spa_dict *dict)
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{
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struct timespec ts;
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uint64_t t1, t2, t3, t4;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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t1 = SPA_TIMESPEC_TO_NSEC(&ts);
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test_query(dict);
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clock_gettime(CLOCK_MONOTONIC, &ts);
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t2 = SPA_TIMESPEC_TO_NSEC(&ts);
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fprintf(stderr, "%d elapsed %"PRIu64" count %u = %"PRIu64"/sec\n", dict->n_items,
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t2 - t1, MAX_COUNT, MAX_COUNT * (uint64_t)SPA_NSEC_PER_SEC / (t2 - t1));
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spa_dict_qsort(dict);
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clock_gettime(CLOCK_MONOTONIC, &ts);
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t3 = SPA_TIMESPEC_TO_NSEC(&ts);
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fprintf(stderr, "%d sort elapsed %"PRIu64"\n", dict->n_items, t3 - t2);
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clock_gettime(CLOCK_MONOTONIC, &ts);
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t3 = SPA_TIMESPEC_TO_NSEC(&ts);
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test_query(dict);
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clock_gettime(CLOCK_MONOTONIC, &ts);
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t4 = SPA_TIMESPEC_TO_NSEC(&ts);
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fprintf(stderr, "%d elapsed %"PRIu64" count %u = %"PRIu64"/sec %f speedup\n", dict->n_items,
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t4 - t3, MAX_COUNT, MAX_COUNT * (uint64_t)SPA_NSEC_PER_SEC / (t4 - t3),
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(double)(t2 - t1) / (t4 - t2));
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}
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int main(int argc, char *argv[])
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{
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struct spa_dict dict;
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spa_zero(dict);
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gen_values();
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/* warmup */
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gen_dict(&dict, 1000);
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test_query(&dict);
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gen_dict(&dict, 10);
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test_lookup(&dict);
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gen_dict(&dict, 20);
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test_lookup(&dict);
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gen_dict(&dict, 50);
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test_lookup(&dict);
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gen_dict(&dict, 100);
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test_lookup(&dict);
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gen_dict(&dict, 1000);
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test_lookup(&dict);
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return 0;
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}
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