xref: /freebsd/contrib/ncurses/ncurses/base/use_window.c (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
1 /****************************************************************************
2  * Copyright (c) 2007 Free Software Foundation, Inc.                        *
3  *                                                                          *
4  * Permission is hereby granted, free of charge, to any person obtaining a  *
5  * copy of this software and associated documentation files (the            *
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9  * copies of the Software, and to permit persons to whom the Software is    *
10  * furnished to do so, subject to the following conditions:                 *
11  *                                                                          *
12  * The above copyright notice and this permission notice shall be included  *
13  * in all copies or substantial portions of the Software.                   *
14  *                                                                          *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
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17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
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21  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
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28 
29 /****************************************************************************
30  *     Author: Thomas E. Dickey                        2007                 *
31  ****************************************************************************/
32 
33 #include <curses.priv.h>
34 
35 MODULE_ID("$Id: use_window.c,v 1.2 2007/10/20 19:57:55 tom Exp $")
36 
37 #ifdef USE_PTHREADS
38 NCURSES_EXPORT(void)
39 _nc_lock_window(WINDOW *win)
40 {
41     WINDOWLIST *p;
42 
43     _nc_lock_global(windowlist);
44     for (p = _nc_windows; p != 0; p = p->next) {
45 	if (&(p->win) == win) {
46 	    pthread_mutex_lock(&(p->mutex_use_window));
47 	    break;
48 	}
49     }
50     _nc_unlock_global(windowlist);
51 }
52 
53 NCURSES_EXPORT(void)
54 _nc_unlock_window(WINDOW *win)
55 {
56     WINDOWLIST *p;
57 
58     _nc_lock_global(windowlist);
59     for (p = _nc_windows; p != 0; p = p->next) {
60 	if (&(p->win) == win) {
61 	    pthread_mutex_unlock(&(p->mutex_use_window));
62 	    break;
63 	}
64     }
65     _nc_unlock_global(windowlist);
66 }
67 #endif
68 
69 NCURSES_EXPORT(int)
70 use_window(WINDOW *win, NCURSES_CALLBACK func, void *data)
71 {
72     int code = OK;
73 
74     T((T_CALLED("use_window(%p,%p,%p)"), win, func, data));
75     _nc_lock_window(win);
76     code = func(win, data);
77     _nc_unlock_window(win);
78 
79     returnCode(code);
80 }
81