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Annotation of prex-old/usr/test/malloc/malloc.c, Revision 1.1.1.1

1.1       nbrk        1: /*
                      2:  * Copyright (c) 2005, Kohsuke Ohtani
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  * 3. Neither the name of the author nor the names of any co-contributors
                     14:  *    may be used to endorse or promote products derived from this software
                     15:  *    without specific prior written permission.
                     16:  *
                     17:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
                     18:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     19:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     20:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
                     21:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     22:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     23:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     24:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     25:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     26:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     27:  * SUCH DAMAGE.
                     28:  */
                     29:
                     30: /*
                     31:  * malloc.c - malloc test program.
                     32:  */
                     33:
                     34: #include <stdlib.h>
                     35: #include <stdio.h>
                     36:
                     37: #define NR_ALLOCS      30
                     38:
                     39: static void *ptr[NR_ALLOCS];
                     40:
                     41: static char *
                     42: alloc(int buflen)
                     43: {
                     44:        char *p, *q;
                     45:        int i;
                     46:
                     47:        printf("Allocate %d bytes - ", buflen);
                     48:
                     49:        p = malloc(buflen);
                     50:        if (p == NULL) {
                     51:                printf("Error: malloc() returns NULL!\n");
                     52:                return NULL;
                     53:        }
                     54:        for (q = p, i = 0; i < buflen; i++)
                     55:                *(q++) = '@';
                     56: #if 0
                     57:        for (q = p, i = 0; i < buflen; i++)
                     58:                putchar(*(q++));
                     59: #endif
                     60:        printf("OK!\n");
                     61:        return p;
                     62: }
                     63:
                     64: static void
                     65: test_1(void)
                     66: {
                     67:        char *p;
                     68:
                     69:        printf("test_1 - start\n");
                     70:
                     71:        p = alloc(1);
                     72:        free(p);
                     73:        p = alloc(2);
                     74:        free(p);
                     75:        p = alloc(256);
                     76:        free(p);
                     77:        p = alloc(1024);
                     78:        free(p);
                     79:        p = alloc(8096);
                     80:        free(p);
                     81:        p = alloc(-1);
                     82:        free(p);
                     83:
                     84:        printf("test_1 - done\n");
                     85: }
                     86:
                     87: static void
                     88: test_2(void)
                     89: {
                     90:        int i, j;
                     91:
                     92:        printf("test_2 - start\n");
                     93:
                     94:        for (i = 0; i < NR_ALLOCS; i++)
                     95:                ptr[i] = alloc(random() & 0xf);
                     96:        for (i = 0; i < NR_ALLOCS; i++)
                     97:                free(ptr[i]);
                     98:
                     99:        for (i = 0; i < NR_ALLOCS; i++)
                    100:                ptr[i] = alloc(random() & 0xff);
                    101:        for (i = 0; i < NR_ALLOCS; i++)
                    102:                free(ptr[i]);
                    103:
                    104:        for (i = 0; i < NR_ALLOCS; i++)
                    105:                ptr[i] = alloc(random() & 0xfff);
                    106:        for (i = 0; i < NR_ALLOCS; i++)
                    107:                free(ptr[i]);
                    108:
                    109:        for (i = 0; i < NR_ALLOCS; i++)
                    110:                ptr[i] = alloc(random() & 0xfff);
                    111:        for (i = 0; i < 10000; i++) {
                    112:                j = random() % NR_ALLOCS;
                    113:                if (ptr[j] != NULL) {
                    114:                        free(ptr[j]);
                    115:                        ptr[j] = NULL;
                    116:                }
                    117:        }
                    118:        printf("test_2 - done\n");
                    119: }
                    120:
                    121: static void
                    122: test_3(void)
                    123: {
                    124:        char *p;
                    125:
                    126:        printf("test_3 - start\n");
                    127:
                    128:        p = alloc(256);
                    129:        free(p);
                    130:
                    131:        printf("test_3 - try to free invalid area...\n");
                    132:        free(p); /* invalid */
                    133:
                    134:        printf("test_3 - done!?\n");
                    135: }
                    136:
                    137: int
                    138: main(int argc, char *argv[])
                    139: {
                    140:        printf("Malloc test program.\n");
                    141:
                    142:        test_1();
                    143:        test_2();
                    144:        test_3();
                    145:
                    146:        return 0;
                    147: }