1 /* $OpenBSD: entries.c,v 1.2 2023/10/17 09:52:09 nicm Exp $ */
2
3 /****************************************************************************
4 * Copyright 2019-2022,2023 Thomas E. Dickey *
5 * Copyright 2006-2012,2017 Free Software Foundation, Inc. *
6 * *
7 * Permission is hereby granted, free of charge, to any person obtaining a *
8 * copy of this software and associated documentation files (the *
9 * "Software"), to deal in the Software without restriction, including *
10 * without limitation the rights to use, copy, modify, merge, publish, *
11 * distribute, distribute with modifications, sublicense, and/or sell *
12 * copies of the Software, and to permit persons to whom the Software is *
13 * furnished to do so, subject to the following conditions: *
14 * *
15 * The above copyright notice and this permission notice shall be included *
16 * in all copies or substantial portions of the Software. *
17 * *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
21 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
24 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
25 * *
26 * Except as contained in this notice, the name(s) of the above copyright *
27 * holders shall not be used in advertising or otherwise to promote the *
28 * sale, use or other dealings in this Software without prior written *
29 * authorization. *
30 ****************************************************************************/
31
32 /****************************************************************************
33 * Author: Thomas E. Dickey *
34 * and: Juergen Pfeifer *
35 ****************************************************************************/
36
37 #include <curses.priv.h>
38
39 #include <ctype.h>
40
41 #include <tic.h>
42
43 MODULE_ID("$Id: entries.c,v 1.2 2023/10/17 09:52:09 nicm Exp $")
44
45 /****************************************************************************
46 *
47 * Entry queue handling
48 *
49 ****************************************************************************/
50 /*
51 * The entry list is a doubly linked list with NULLs terminating the lists:
52 *
53 * --------- --------- ---------
54 * | | | | | | offset
55 * |-------| |-------| |-------|
56 * | ----+-->| ----+-->| NULL | next
57 * |-------| |-------| |-------|
58 * | NULL |<--+---- |<--+---- | last
59 * --------- --------- ---------
60 * ^ ^
61 * | |
62 * | |
63 * _nc_head _nc_tail
64 */
65
66 NCURSES_EXPORT_VAR(ENTRY *) _nc_head = 0;
67 NCURSES_EXPORT_VAR(ENTRY *) _nc_tail = 0;
68
69 static ENTRY *
_nc_delink_entry(ENTRY * headp,const TERMTYPE2 * const tterm)70 _nc_delink_entry(ENTRY * headp, const TERMTYPE2 *const tterm)
71 /* delink the allocated storage for the given list entry */
72 {
73 ENTRY *ep, *last;
74
75 for (last = 0, ep = headp; ep != 0; last = ep, ep = ep->next) {
76 if (&(ep->tterm) == tterm) {
77 if (last != 0) {
78 last->next = ep->next;
79 }
80 if (ep->next != 0) {
81 ep->next->last = last;
82 }
83 if (ep == _nc_head) {
84 _nc_head = ep->next;
85 }
86 if (ep == _nc_tail) {
87 _nc_tail = last;
88 }
89 break;
90 }
91 }
92 return ep;
93 }
94
95 NCURSES_EXPORT(void)
_nc_free_entry(ENTRY * headp,TERMTYPE2 * tterm)96 _nc_free_entry(ENTRY * headp, TERMTYPE2 *tterm)
97 /* free the allocated storage consumed by the given list entry */
98 {
99 ENTRY *ep;
100
101 if ((ep = _nc_delink_entry(headp, tterm)) != 0) {
102 free(ep);
103 }
104 }
105
106 NCURSES_EXPORT(void)
_nc_free_entries(ENTRY * headp)107 _nc_free_entries(ENTRY * headp)
108 /* free the allocated storage consumed by list entries */
109 {
110 (void) headp; /* unused - _nc_head is altered here! */
111
112 while (_nc_head != 0) {
113 _nc_free_termtype2(&(_nc_head->tterm));
114 }
115 }
116
117 NCURSES_EXPORT(void)
_nc_leaks_tinfo(void)118 _nc_leaks_tinfo(void)
119 {
120 #if NO_LEAKS
121 char *s;
122 #endif
123
124 T((T_CALLED("_nc_leaks_tinfo()")));
125 #if NO_LEAKS
126 _nc_globals.leak_checking = TRUE;
127 _nc_free_tparm(cur_term);
128 _nc_tgetent_leaks();
129
130 #ifdef USE_PTHREADS
131 /*
132 * Discard any prescreen data which is not used for the current screen.
133 */
134 _nc_lock_global(screen);
135 {
136 PRESCREEN_LIST *p;
137 pthread_t id = GetThreadID();
138 for (p = _nc_prescreen.allocated; p != 0; p = p->next) {
139 if (p->id == id && p->sp != CURRENT_SCREEN) {
140 FreeAndNull(p->sp);
141 }
142 }
143 }
144 _nc_unlock_global(screen);
145 #endif
146 if (TerminalOf(CURRENT_SCREEN) != 0) {
147 del_curterm(TerminalOf(CURRENT_SCREEN));
148 }
149 _nc_forget_prescr();
150
151 _nc_comp_captab_leaks();
152 _nc_comp_userdefs_leaks();
153 _nc_free_entries(_nc_head);
154 _nc_get_type(0);
155 _nc_first_name(0);
156 _nc_db_iterator_leaks();
157 _nc_keyname_leaks();
158 #if BROKEN_LINKER || USE_REENTRANT
159 _nc_names_leaks();
160 _nc_codes_leaks();
161 FreeIfNeeded(_nc_prescreen.real_acs_map);
162 #endif
163 _nc_comp_error_leaks();
164
165 if ((s = _nc_home_terminfo()) != 0)
166 free(s);
167
168 #ifdef TRACE
169 T((T_RETURN("")));
170 curses_trace(0);
171 _nc_trace_buf(-1, (size_t) 0);
172 #endif
173
174 #endif /* NO_LEAKS */
175 returnVoid;
176 }
177
178 #if NO_LEAKS
179 NCURSES_EXPORT(void)
_nc_free_tinfo(int code)180 _nc_free_tinfo(int code)
181 {
182 T((T_CALLED("_nc_free_tinfo(%d)"), code));
183 _nc_leaks_tinfo();
184 exit(code);
185 }
186 #endif
187
188 NCURSES_EXPORT(void)
exit_terminfo(int code)189 exit_terminfo(int code)
190 {
191 T((T_CALLED("exit_terminfo(%d)"), code));
192 #if NO_LEAKS
193 _nc_leaks_tinfo();
194 #endif
195 exit(code);
196 }
197