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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 | /* Copyright (C) 1991-1999,2001,2002,2007,2009 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/>. */ /* * 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/jmp_buf_tag.h> __BEGIN_NAMESPACE_STD 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; __END_NAMESPACE_STD /* 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) __BEGIN_NAMESPACE_STD /* 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__)); __END_NAMESPACE_STD #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 (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. */ __END_DECLS #ifdef _LIBC extern void __longjmp(__jmp_buf __env, int __val) __THROWNL attribute_noreturn; libc_hidden_proto(__longjmp) extern void __libc_longjmp(struct __jmp_buf_tag __env[1], int __val) __THROWNL attribute_noreturn; extern void __libc_siglongjmp(sigjmp_buf __env, int __val) __THROWNL attribute_noreturn; extern void _longjmp_unwind(jmp_buf __env, int __val); libc_hidden_proto(_longjmp_unwind) extern int __sigjmp_save(sigjmp_buf __env, int __savemask) attribute_hidden; /* We use the normal longjmp for unwinding */ # define __libc_unwind_longjmp(buf, val) __libc_longjmp(buf, val) #endif #endif /* setjmp.h */ |