| /* Macros for using symbol sets for running lists of functions. |
| Copyright (C) 1994, 1995 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Library General Public License as |
| published by the Free Software Foundation; either version 2 of the |
| License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public |
| License along with the GNU C Library; see the file COPYING.LIB. If |
| not, write to the Free Software Foundation, Inc., 675 Mass Ave, |
| Cambridge, MA 02139, USA. */ |
| |
| #ifndef _SET_HOOKS_H |
| |
| #define __need_size_t |
| #include <stddef.h> |
| #include <sys/cdefs.h> |
| |
| /* Define a hook variable called NAME. Functions put on this hook take |
| arguments described by PROTO. Use `text_set_element (NAME, FUNCTION)' |
| from gnu-stabs.h to add a function to the hook. */ |
| |
| #define DEFINE_HOOK(NAME, PROTO) \ |
| typedef void __##NAME##_hook_function_t PROTO; \ |
| symbol_set_define (NAME) |
| |
| #define DECLARE_HOOK(NAME, PROTO) \ |
| typedef void __##NAME##_hook_function_t PROTO;\ |
| symbol_set_declare (NAME) |
| |
| /* Run all the functions hooked on the set called NAME. |
| Each function is called like this: `function ARGS'. */ |
| |
| #define RUN_HOOK(NAME, ARGS) \ |
| do { \ |
| void *const *ptr; \ |
| for (ptr = symbol_set_first_element (NAME); \ |
| ! symbol_set_end_p (NAME, ptr); ++ptr) \ |
| (*(__##NAME##_hook_function_t *) *ptr) ARGS; \ |
| } while (0) |
| |
| /* Define a hook variable with NAME and PROTO, and a function called RUNNER |
| which calls each function on the hook in turn, with ARGS. */ |
| |
| #define DEFINE_HOOK_RUNNER(name, runner, proto, args) \ |
| DEFINE_HOOK (name, proto); void runner proto { RUN_HOOK (name, args); } |
| |
| |
| #endif |