Annotation of src/usr.bin/window/wwalloc.c, Revision 1.5
1.5 ! mpech 1: /* $OpenBSD: wwalloc.c,v 1.4 1998/04/26 22:49:03 millert Exp $ */
1.1 deraadt 2: /* $NetBSD: wwalloc.c,v 1.3 1995/09/28 10:35:10 tls Exp $ */
3:
4: /*
5: * Copyright (c) 1983, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * This code is derived from software contributed to Berkeley by
9: * Edward Wang at The University of California, Berkeley.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the University of
22: * California, Berkeley and its contributors.
23: * 4. Neither the name of the University nor the names of its contributors
24: * may be used to endorse or promote products derived from this software
25: * without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37: * SUCH DAMAGE.
38: */
39:
40: #ifndef lint
41: #if 0
42: static char sccsid[] = "@(#)wwalloc.c 8.1 (Berkeley) 6/6/93";
43: #else
1.5 ! mpech 44: static char rcsid[] = "$OpenBSD: wwalloc.c,v 1.4 1998/04/26 22:49:03 millert Exp $";
1.1 deraadt 45: #endif
46: #endif /* not lint */
47:
1.4 millert 48: #include <stdlib.h>
1.1 deraadt 49: #include "ww.h"
50:
51: char **
52: wwalloc(row, col, nrow, ncol, size)
1.4 millert 53: int row, col, nrow, ncol;
54: size_t size;
1.1 deraadt 55: {
1.5 ! mpech 56: char *p, **pp;
! 57: int i;
1.1 deraadt 58:
59: /* fast, call malloc only once */
60: pp = (char **)
1.4 millert 61: malloc(sizeof (char **) * nrow + size * nrow * ncol);
1.1 deraadt 62: if (pp == 0) {
63: wwerrno = WWE_NOMEM;
64: return 0;
65: }
66: p = (char *)&pp[nrow];
67: col *= size;
68: size /= sizeof (char); /* paranoid */
69: size *= ncol;
70: for (i = 0; i < nrow; i++) {
71: pp[i] = p - col;
72: p += size;
73: }
74: return pp - row;
75: }
76:
77: wwfree(p, row)
1.5 ! mpech 78: char **p;
1.1 deraadt 79: {
80: free((char *)(p + row));
81: }