41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
72 lines
2.4 KiB
C
72 lines
2.4 KiB
C
/* Macros for using symbol sets for running lists of functions.
|
|
Copyright (C) 1994, 1995, 1997, 2000 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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#ifndef _SET_HOOKS_H
|
|
#define _SET_HOOKS_H 1
|
|
|
|
#define __need_size_t
|
|
#include <stddef.h>
|
|
#include <sys/cdefs.h>
|
|
|
|
#ifdef symbol_set_define
|
|
/* 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 *__unbounded 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); \
|
|
extern void runner proto; void runner proto { RUN_HOOK (name, args); }
|
|
|
|
#else
|
|
|
|
/* The system does not provide necessary support for this. */
|
|
# define DEFINE_HOOK(NAME, PROTO)
|
|
|
|
# define DECLARE_HOOK(NAME, PROTO)
|
|
|
|
# define RUN_HOOK(NAME, ARGS)
|
|
|
|
# define DEFINE_HOOK_RUNNER(name, runner, proto, args)
|
|
|
|
#endif
|
|
|
|
#endif /* set-hooks.h */
|