src/eventhooks.h

   1 /* eventhooks.h - Event hooks
   2  * Copyright 2000-2024 Evilnet Development
   3  *
   4  * This file is part of x3.
   5  *
   6  * x3 is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with srvx; if not, write to the Free Software Foundation,
  18  * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
  19  */
  20
  21 #ifndef INCLUDED_eventhooks_h
  22 #define INCLUDED_eventhooks_h
  23
  24 #define EH_ADD_HEAD     1
  25 #define EH_ADD_TAIL     -1
  26 #define EH_ADD_DEFAULT  0
  27
  28 #define DEFINE_EH_FUNC_LIST(l, d, cf) struct eh_func_list l = {NULL, NULL, d, 0, cf}
  29 #define INIT_EH_FUNC_LIST(d) {NULL, NULL, d, 0}
  30
  31 #define EH_CONT                 0
  32 #define EH_STOP                 1
  33
  34 struct eh_func;
  35
  36 typedef int (*eh_func_t) (void *extra, void *callextra);
  37 typedef void (*eh_clean_func_t) (struct eh_func *ehf);
  38
  39 struct eh_func {
  40     struct eh_func *next;
  41     eh_func_t func;
  42     void *extra;
  43 };
  44
  45 struct eh_func_list {
  46     struct eh_func *head;
  47     struct eh_func *tail;
  48     int add_default;
  49     int count;
  50     eh_clean_func_t clean;
  51 };
  52
  53 struct eh_func_list *init_hook_func_list(struct eh_func_list *list, int defpos);
  54 void reg_hook_func(struct eh_func_list *list, eh_func_t func, void *extra);
  55 void reg_hook_func_pos(struct eh_func_list *list, eh_func_t func, void *extra, int pos);
  56 void unreg_hook_func(struct eh_func_list *list, eh_func_t func, void *extra);
  57 void free_hook_func_list(struct eh_func_list *list);
  58 void call_hook_func_noargs(struct eh_func_list *list);
  59 void call_hook_func_args(struct eh_func_list *list, void *callextra);
  60
  61 #endif /* INCLUDED_eventhooks_h */