universalservice/examples/hashtable/test_insert_delete.c

/* Copyright (c) 2024, Peter McGoron
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1) Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2) Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "uns.h"
#include "uns_hashtable.h"
#include "testnames.h"

#define ARRLEN(a) (sizeof(a) /sizeof((a)[0]))

/* Insert and delete in a way that invokes the garbage collector every
 * so often. add 50 delete 10
 */

int test(struct uns_gc *gc)
{
	/* Keys and values will be stored as NUL terminated for simplicity. */
	struct uns_ctr htbl = {0};
	struct uns_ctr str = {0};
	struct uns_ctr val = {0};
	struct uns_ctr old_value = {0};
	int i, j;
	size_t slen;
	int first_not_deleted = 0;

	uns_root_add(gc, &htbl);
	uns_root_add(gc, &str);
	uns_root_add(gc, &val);
	uns_root_add(gc, &old_value);

	uns_hashtable_alloc_into(gc, &htbl, 32);

	for (i = 0; i < ARRLEN(names); i++) {
		printf("%d\r", i);
		fflush(stdout);

		slen = strlen(names[i]);
		str.p = uns_alloc(gc, slen + 1, 0);
		val.p = uns_alloc(gc, strlen(values[i]) + 1, 0);
		strcpy(str.p, names[i]);
		strcpy(val.p, values[i]);

		uns_hashtable_add(gc, &htbl, &str, slen, &val, &old_value);
		assert(!old_value.p);

		if (i % 50 == 0 && i != 0) {
			for (j = first_not_deleted; j < first_not_deleted + 10; j++) {
				uns_hashtable_del(gc, &htbl, (unsigned char *)names[j], strlen(names[j]), &old_value);
				if (!old_value.p || strcmp(old_value.p, values[j]) != 0) {
					printf("\n%s, %s\n", (char *)val.p, values[j]);
					printf("\n%d-%d delete failed\n", i, j);
					exit(1);
				}
			}
			first_not_deleted += 10;
		}

		for (j = 0; j < ARRLEN(names); j++) {
			uns_hashtable_search(gc, &htbl, (unsigned char*)names[j], strlen(names[j]),
			                     &val);
			if (j < first_not_deleted || j > i) {
				if (val.p) {
					printf("\n%d: %d should not exist\n", i, j);
					exit(1);
				}
			} else if (j <= i && (!val.p || strcmp(val.p, values[j]) != 0)) {
				printf("\n%s, %s\n", (char *)val.p, values[j]);
				printf("\n%d-%d failed\n", i, j);
				exit(1);
			}
		}
	}
	printf("\ndone\n");

	uns_root_remove(gc, &old_value);
	uns_root_remove(gc, &val);
	uns_root_remove(gc, &str);
	uns_root_remove(gc, &htbl);
	uns_collect(gc);
	return 0;
}