.
[glibc/history.git] / setjmp / sigjmp.c
blobb23c547f5ee2be898cbaa6647a6be8c71f43d562
1 /* Copyright (C) 1992, 1994, 1997 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17 02111-1307 USA. */
19 #include <stddef.h>
20 #include <setjmp.h>
21 #include <signal.h>
23 /* This function is called by the `sigsetjmp' macro
24 before doing a `__setjmp' on ENV[0].__jmpbuf.
25 Always return zero. */
27 int
28 __sigjmp_save (sigjmp_buf env, int savemask)
30 env[0].__mask_was_saved = (savemask &&
31 __sigprocmask (SIG_BLOCK, (sigset_t *) NULL,
32 &env[0].__saved_mask) == 0);
34 return 0;