109 lines
3 KiB
C
109 lines
3 KiB
C
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/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/tree.c"
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#include <stdint.h>
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#include "libavutil/common.h"
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#include "libavutil/lfg.h"
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#include "libavutil/log.h"
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static int check(AVTreeNode *t)
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{
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if (t) {
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int left = check(t->child[0]);
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int right = check(t->child[1]);
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if (left > 999 || right > 999)
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return 1000;
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if (right - left != t->state)
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return 1000;
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if (t->state > 1 || t->state < -1)
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return 1000;
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return FFMAX(left, right) + 1;
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}
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return 0;
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}
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static void print(AVTreeNode *t, int depth)
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{
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int i;
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for (i = 0; i < depth * 4; i++)
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av_log(NULL, AV_LOG_ERROR, " ");
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if (t) {
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av_log(NULL, AV_LOG_ERROR, "Node %p %2d %p\n", t, t->state, t->elem);
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print(t->child[0], depth + 1);
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print(t->child[1], depth + 1);
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} else
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av_log(NULL, AV_LOG_ERROR, "NULL\n");
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}
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static int cmp(const void *a, const void *b)
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{
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return (const uint8_t *) a - (const uint8_t *) b;
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}
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int main(int argc, char **argv)
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{
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int i;
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void *k;
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AVTreeNode *root = NULL, *node = NULL;
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AVLFG prng;
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int log_level = argc <= 1 ? AV_LOG_INFO : atoi(argv[1]);
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av_log_set_level(log_level);
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av_lfg_init(&prng, 1);
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for (i = 0; i < 10000; i++) {
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intptr_t j = av_lfg_get(&prng) % 86294;
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if (check(root) > 999) {
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av_log(NULL, AV_LOG_ERROR, "FATAL error %d\n", i);
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print(root, 0);
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return 1;
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}
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av_log(NULL, AV_LOG_DEBUG, "inserting %4d\n", (int)j);
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if (!node)
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node = av_tree_node_alloc();
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if (!node) {
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av_log(NULL, AV_LOG_ERROR, "Memory allocation failure.\n");
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return 1;
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}
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av_tree_insert(&root, (void *)(j + 1), cmp, &node);
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j = av_lfg_get(&prng) % 86294;
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{
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AVTreeNode *node2 = NULL;
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av_log(NULL, AV_LOG_DEBUG, "removing %4d\n", (int)j);
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av_tree_insert(&root, (void *)(j + 1), cmp, &node2);
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k = av_tree_find(root, (void *)(j + 1), cmp, NULL);
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if (k)
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av_log(NULL, AV_LOG_ERROR, "removal failure %d\n", i);
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av_free(node2);
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}
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}
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av_free(node);
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av_tree_destroy(root);
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return 0;
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}
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