/* Copyright (C) 1991-2021 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
|
<https://www.gnu.org/licenses/>. */
|
|
/*
|
* ISO C99 Standard: 7.13 Nonlocal jumps <setjmp.h>
|
*/
|
|
#ifndef _SETJMP_H
|
#define _SETJMP_H 1
|
|
#include <features.h>
|
|
__BEGIN_DECLS
|
|
#include <bits/setjmp.h> /* Get `__jmp_buf'. */
|
#include <bits/types/struct___jmp_buf_tag.h>
|
|
typedef struct __jmp_buf_tag jmp_buf[1];
|
|
/* Store the calling environment in ENV, also saving the signal mask.
|
Return 0. */
|
extern int setjmp (jmp_buf __env) __THROWNL;
|
|
/* Store the calling environment in ENV, also saving the
|
signal mask if SAVEMASK is nonzero. Return 0.
|
This is the internal name for `sigsetjmp'. */
|
extern int __sigsetjmp (struct __jmp_buf_tag __env[1], int __savemask) __THROWNL;
|
|
/* Store the calling environment in ENV, not saving the signal mask.
|
Return 0. */
|
extern int _setjmp (struct __jmp_buf_tag __env[1]) __THROWNL;
|
|
/* Do not save the signal mask. This is equivalent to the `_setjmp'
|
BSD function. */
|
#define setjmp(env) _setjmp (env)
|
|
|
/* Jump to the environment saved in ENV, making the
|
`setjmp' call there return VAL, or 1 if VAL is 0. */
|
extern void longjmp (struct __jmp_buf_tag __env[1], int __val)
|
__THROWNL __attribute__ ((__noreturn__));
|
|
#if defined __USE_MISC || defined __USE_XOPEN
|
/* Same. Usually `_longjmp' is used with `_setjmp', which does not save
|
the signal mask. But it is how ENV was saved that determines whether
|
`longjmp' restores the mask; `_longjmp' is just an alias. */
|
extern void _longjmp (struct __jmp_buf_tag __env[1], int __val)
|
__THROWNL __attribute__ ((__noreturn__));
|
#endif
|
|
|
#ifdef __USE_POSIX
|
/* Use the same type for `jmp_buf' and `sigjmp_buf'.
|
The `__mask_was_saved' flag determines whether
|
or not `longjmp' will restore the signal mask. */
|
typedef struct __jmp_buf_tag sigjmp_buf[1];
|
|
/* Store the calling environment in ENV, also saving the
|
signal mask if SAVEMASK is nonzero. Return 0. */
|
# define sigsetjmp(env, savemask) __sigsetjmp (env, savemask)
|
|
/* Jump to the environment saved in ENV, making the
|
sigsetjmp call there return VAL, or 1 if VAL is 0.
|
Restore the signal mask if that sigsetjmp call saved it.
|
This is just an alias `longjmp'. */
|
extern void siglongjmp (sigjmp_buf __env, int __val)
|
__THROWNL __attribute__ ((__noreturn__));
|
#endif /* Use POSIX. */
|
|
|
/* Define helper functions to catch unsafe code. */
|
#if __USE_FORTIFY_LEVEL > 0
|
# include <bits/setjmp2.h>
|
#endif
|
|
__END_DECLS
|
|
#endif /* setjmp.h */
|
