Permalink
Cannot retrieve contributors at this time
Name already in use
A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
glibc/include/set-hooks.h
Go to fileThis commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
70 lines (51 sloc)
2.34 KB
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/* Macros for using symbol sets for running lists of functions. | |
Copyright (C) 1994-2016 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, see | |
<http://www.gnu.org/licenses/>. */ | |
#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 *ptr; \ | |
for (ptr = (void *const *) 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 */ |