2 * Copyright (C) 1994, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.3 1995-05-15 11:56:55 quinn
8 * Debuggng & adjustments.
10 * Revision 1.2 1995/04/10 10:23:50 quinn
13 * Revision 1.1 1995/03/27 08:35:17 quinn
14 * Created util library
15 * Added memory debugging module. Imported options-manager
24 static const unsigned char head[] = {44, 33, 22, 11};
25 static const unsigned char tail[] = {11, 22, 33, 44};
26 static const unsigned char freed[] = {99, 99, 99, 99};
28 void *d_malloc(char *file, int line, int nbytes)
33 if (!(res = malloc(nbytes + 3 * sizeof(long))))
35 fprintf(stderr, "---d_malloc, '%s':%d, %d->%p\n",
36 file, line, nbytes, res + 2 * sizeof(long));
38 memcpy(res, &head, sizeof(long));
39 memcpy(res + sizeof(long), &len, sizeof(long));
40 res += 2 * sizeof(long);
41 memcpy(res + nbytes, &tail, sizeof(long));
45 void d_free(char *file, int line, char *ptr)
49 if (memcmp(&head, ptr - 2 * sizeof(long), sizeof(long)))
51 memcpy(ptr - 2 * sizeof(long), &freed, sizeof(long));
52 memcpy(&len, ptr - sizeof(long), sizeof(long));
53 if (memcmp(ptr + len, &tail, sizeof(long)))
55 fprintf(stderr, "---d_free, '%s':%d, %p (%d)\n",
56 file, line, ptr, len);
57 free(ptr - 2 * sizeof(long));
61 void *d_realloc(char *file, int line, char *ptr, int nbytes)
63 long len, nlen = nbytes;
67 if (memcmp(&head, ptr - 2 * sizeof(long), sizeof(long)))
69 memcpy(&len, ptr - sizeof(long), sizeof(long));
70 if (memcmp(ptr + len, &tail, sizeof(long)))
72 if (!(r = realloc(ptr - 2 * sizeof(long), nbytes + 3 * sizeof(long))))
74 fprintf(stderr, "---d_realloc, '%s':%d, %d->%d, %p->%p\n",
75 file, line, len, nbytes, p, r + 2 * sizeof(long));
76 memcpy(r, &head, sizeof(long));
77 memcpy(r + sizeof(long), &nlen, sizeof(long));
78 if (r != ptr - 2 * sizeof(long))
80 memcpy(r + 2 * sizeof(long), ptr, len);
81 memcpy(ptr - 2 * sizeof(long), &freed, sizeof(long));
83 r += 2 * sizeof(long);
84 memcpy(r + nbytes, &tail, sizeof(long));