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 * 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) 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) 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) 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) 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) 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