1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 1997 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1988 AT&T */
28 /* All Rights Reserved */
29
30 /*
31 * University Copyright- Copyright (c) 1982, 1986, 1988
32 * The Regents of the University of California
33 * All Rights Reserved
34 *
35 * University Acknowledgment- Portions of this document are derived from
36 * software developed by the University of California, Berkeley, and its
37 * contributors.
38 */
39
40 /*LINTLIBRARY*/
41
42 #include <stdlib.h>
43 #include <sys/types.h>
44 #include "curses_inc.h"
45
46 /* This routine deletes a _window and releases it back to the system. */
47
48 int
delwin(WINDOW * win)49 delwin(WINDOW *win)
50 {
51 int i;
52 WINDOW *par;
53
54 /* If we have children don't delte the window. */
55 if (win->_ndescs > 0)
56 return (ERR);
57
58 /*
59 * If window is a pad, delete the padwin associated with it.
60 * NOTE: We shouldn't care that the recursive call will decrement
61 * ndescs for this window, since the window will be deleted anyhow.
62 */
63
64 if (win->_padwin) {
65 win->_padwin->_maxy = win->_maxy;
66 (void) delwin(win->_padwin);
67 }
68 if (win->_parent == NULL) {
69 /* Delete all the memory associated with this window. */
70 for (i = win->_maxy; i-- > 0; ) {
71 free((char *)win->_y[i]);
72 #ifdef _VR3_COMPAT_CODE
73 if (_y16update)
74 free((char *)win->_y16[i]);
75 #endif /* _VR3_COMPAT_CODE */
76 }
77 } else {
78 /*
79 * We are a subwin and we don't want to delete the memory since
80 * it's shared by other windows. We do want to decrement the
81 * descendant count so that if there are no children left to a
82 * particular window winsdelln.c will run in fast mode (look there).
83 */
84 for (par = win->_parent; par != NULL; par = par->_parent)
85 par->_ndescs--;
86 }
87
88 #ifdef _VR3_COMPAT_CODE
89 if (_y16update)
90 free((char *)win->_y16);
91 #endif /* _VR3_COMPAT_CODE */
92
93 free((char *)win->_y);
94 free((char *)win->_firstch);
95 free((char *)win);
96 return (OK);
97 }
98