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/*
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 * Copyright (c) 2005, Kohsuke Ohtani
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the author nor the names of any co-contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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/*
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 * malloc.c - malloc test program.
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 */
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#include <stdlib.h>
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#include <stdio.h>
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#define NR_ALLOCS        30
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static void *ptr[NR_ALLOCS];
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static char *
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alloc(int buflen)
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{
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        char *p, *q;
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        int i;
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        printf("Allocate %d bytes - ", buflen);
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        p = malloc((size_t)buflen);
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        if (p == NULL) {
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                printf("Error: malloc() returns NULL!\n");
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                return NULL;
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        }
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        for (q = p, i = 0; i < buflen; i++)
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                *(q++) = '@';
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#if 0
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        for (q = p, i = 0; i < buflen; i++)
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                putchar(*(q++));
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#endif
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        printf("OK!\n");
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        return p;
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}
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static void
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test_1(void)
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{
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        char *p;
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        printf("test_1 - start\n");
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        p = alloc(1);
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        free(p);
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        p = alloc(2);
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        free(p);
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        p = alloc(256);
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        free(p);
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        p = alloc(1024);
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        free(p);
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        p = alloc(8096);
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        free(p);
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        p = alloc(-1);
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        free(p);
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        printf("test_1 - done\n");
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}
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static void
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test_2(void)
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{
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        int i, j;
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        printf("test_2 - start\n");
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        for (i = 0; i < NR_ALLOCS; i++)
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                ptr[i] = alloc(random() & 0xf);
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        for (i = 0; i < NR_ALLOCS; i++)
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                free(ptr[i]);
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        for (i = 0; i < NR_ALLOCS; i++)
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                ptr[i] = alloc(random() & 0xff);
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        for (i = 0; i < NR_ALLOCS; i++)
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                free(ptr[i]);
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        for (i = 0; i < NR_ALLOCS; i++)
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                ptr[i] = alloc(random() & 0xfff);
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        for (i = 0; i < NR_ALLOCS; i++)
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                free(ptr[i]);
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        for (i = 0; i < NR_ALLOCS; i++)
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                ptr[i] = alloc(random() & 0xfff);
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        for (i = 0; i < 10000; i++) {
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                j = random() % NR_ALLOCS;
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                if (ptr[j] != NULL) {
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                        free(ptr[j]);
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                        ptr[j] = NULL;
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                }
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        }
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        printf("test_2 - done\n");
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}
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static void
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test_3(void)
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{
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        char *p;
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        printf("test_3 - start\n");
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        p = alloc(256);
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        free(p);
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        printf("test_3 - try to free invalid area...\n");
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        free(p); /* invalid */
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        printf("test_3 - done!?\n");
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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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        printf("Malloc test program.\n");
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        test_1();
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        test_2();
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        test_3();
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        return 0;
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}