libmainloop/hooks.h

   1 /*
   2  * ion/mainloop/hooks.h
   3  *
   4  * Copyright (c) Tuomo Valkonen 1999-2007.
   5  *
   6  * Ion is free software; you can redistribute it and/or modify it under
   7  * the terms of the GNU Lesser General Public License as published by
   8  * the Free Software Foundation; either version 2.1 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #ifndef ION_LIBMAINLOOP_HOOKS_H
  13 #define ION_LIBMAINLOOP_HOOKS_H
  14
  15 #include <libtu/types.h>
  16 #include <libextl/extl.h>
  17
  18 INTRSTRUCT(WHookItem);
  19 INTRCLASS(WHook);
  20
  21 typedef void WHookDummy();
  22 typedef bool WHookMarshall(WHookDummy *fn, void *param);
  23 typedef bool WHookMarshallExtl(ExtlFn fn, void *param);
  24
  25 DECLSTRUCT(WHookItem){
  26     WHookDummy *fn;
  27     ExtlFn efn;
  28     WHookItem *next, *prev;
  29 };
  30
  31 DECLCLASS(WHook){
  32     Obj obj;
  33     WHookItem *items;
  34 };
  35
  36
  37 /* If hk==NULL to register, new is attempted to be created. */
  38 extern WHook *mainloop_register_hook(const char *name, WHook *hk);
  39 extern WHook *mainloop_unregister_hook(const char *name, WHook *hk);
  40 extern WHook *mainloop_get_hook(const char *name);
  41
  42 extern WHook *create_hook();
  43 extern bool hook_init(WHook *hk);
  44 extern void hook_deinit(WHook *hk);
  45
  46 extern bool hook_add(WHook *hk, WHookDummy *fn);
  47 extern bool hook_remove(WHook *hk, WHookDummy *fn);
  48 extern WHookItem *hook_find(WHook *hk, WHookDummy *fn);
  49
  50 extern bool hook_add_extl(WHook *hk, ExtlFn fn);
  51 extern bool hook_remove_extl(WHook *hk, ExtlFn fn);
  52 extern WHookItem *hook_find_extl(WHook *hk, ExtlFn efn);
  53
  54 extern void hook_call(const WHook *hk, void *p,
  55                       WHookMarshall *m, WHookMarshallExtl *em);
  56 extern void hook_call_v(const WHook *hk);
  57 extern void hook_call_o(const WHook *hk, Obj *o);
  58 extern void hook_call_p(const WHook *hk, void *p, WHookMarshallExtl *em);
  59
  60 extern bool hook_call_alt(const WHook *hk, void *p,
  61                           WHookMarshall *m, WHookMarshallExtl *em);
  62 extern bool hook_call_alt_v(const WHook *hk);
  63 extern bool hook_call_alt_o(const WHook *hk, Obj *o);
  64 extern bool hook_call_alt_p(const WHook *hk, void *p, WHookMarshallExtl *em);
  65
  66
  67 #endif /* ION_LIBMAINLOOP_HOOKS_H */