diff options
Diffstat (limited to 'include/setjmp.h')
| -rw-r--r-- | include/setjmp.h | 69 |
1 files changed, 37 insertions, 32 deletions
diff --git a/include/setjmp.h b/include/setjmp.h index 33bcfc539..99e3dc8cd 100644 --- a/include/setjmp.h +++ b/include/setjmp.h @@ -1,23 +1,23 @@ -/* Copyright (C) 1991,92,93,94,95,96,97,98 Free Software Foundation, Inc. +/* Copyright (C) 1991-1999, 2001 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. + 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 - Library General Public License for more details. + Lesser 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., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ + 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. */ /* - * ISO C Standard: 4.6 NON-LOCAL JUMPS <setjmp.h> + * ISO C99 Standard: 7.13 Nonlocal jumps <setjmp.h> */ #ifndef _SETJMP_H @@ -34,50 +34,54 @@ __BEGIN_DECLS typedef struct __jmp_buf_tag /* C++ doesn't like tagless structs. */ { /* NOTE: The machine-dependent definitions of `__sigsetjmp' - assume that a `jmp_buf' begins with a `__jmp_buf'. - Do not move this member or add others before it. */ + assume that a `jmp_buf' begins with a `__jmp_buf' and that + `__mask_was_saved' follows it. Do not move these members + or add others before it. */ __jmp_buf __jmpbuf; /* Calling environment. */ int __mask_was_saved; /* Saved the signal mask? */ __sigset_t __saved_mask; /* Saved signal mask. */ } jmp_buf[1]; +/* Store the calling environment in ENV, also saving the signal mask. + Return 0. */ +extern int setjmp (jmp_buf __env) __THROW; + +/* Store the calling environment in ENV, not saving the signal mask. + Return 0. */ +extern int _setjmp (jmp_buf __env) __THROW; + /* 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 __P ((jmp_buf __env, int __savemask)); +extern int __sigsetjmp (jmp_buf __env, int __savemask) __THROW; #ifndef __FAVOR_BSD -/* Set ENV to the current position and return 0, not saving the signal mask. - This is just like `sigsetjmp (ENV, 0)'. - The ISO C standard says `setjmp' is a macro. */ -# define setjmp(env) __sigsetjmp ((env), 0) +/* Do not save the signal mask. This is equivalent to the `_setjmp' + BSD function. */ +# define setjmp(env) _setjmp (env) #else /* We are in 4.3 BSD-compatibility mode in which `setjmp' - saves the signal mask like `sigsetjmp (ENV, 1)'. */ -# define setjmp(env) __sigsetjmp ((env), 1) + saves the signal mask like `sigsetjmp (ENV, 1)'. We have to + define a macro since ISO C says `setjmp' is one. */ +# define setjmp(env) setjmp (env) #endif /* Favor BSD. */ -#if defined __USE_BSD || defined __USE_XOPEN -/* Set ENV to the current position and return 0, not saving the signal mask. - This is the 4.3 BSD name for ISO `setjmp'. */ -# define _setjmp(env) __sigsetjmp ((env), 0) -#endif - /* Jump to the environment saved in ENV, making the `setjmp' call there return VAL, or 1 if VAL is 0. */ -extern void longjmp __P ((jmp_buf __env, int __val)) - __attribute__ ((__noreturn__)); +extern void longjmp (jmp_buf __env, int __val) + __THROW __attribute__ ((__noreturn__)); #if defined __USE_BSD || 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 __P ((jmp_buf __env, int __val)) - __attribute__ ((__noreturn__)); +extern void _longjmp (jmp_buf __env, int __val) + __THROW __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. */ @@ -85,14 +89,15 @@ typedef jmp_buf sigjmp_buf; /* Store the calling environment in ENV, also saving the signal mask if SAVEMASK is nonzero. Return 0. */ -# define sigsetjmp(env, savemask) __sigsetjmp ((env), (savemask)) +# 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 __P ((sigjmp_buf __env, int __val)) - __attribute__ ((__noreturn__)); +extern void siglongjmp (sigjmp_buf __env, int __val) + __THROW __attribute__ ((__noreturn__)); +#endif /* Use POSIX. */ __END_DECLS |