1 /* sigstack, sigaltstack definitions.
2 Copyright (C) 1998, 1999 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
19
20 #ifndef _SIGNAL_H
21 # error "Never include this file directly. Use <signal.h> instead"
22 #endif
23
24
25 /* Structure describing a signal stack (obsolete). */
26 struct sigstack
27 {
28 void *ss_sp; /* Signal stack pointer. */
29 int ss_onstack; /* Nonzero if executing on this stack. */
30 };
31
32
33 /* Possible values for `ss_flags.'. */
34 enum
35 {
36 SS_ONSTACK = 1,
37 #define SS_ONSTACK SS_ONSTACK
38 SS_DISABLE
39 #define SS_DISABLE SS_DISABLE
40 };
41
42 /* Minimum stack size for a signal handler. */
43 #define MINSIGSTKSZ 2048
44
45 /* System default stack size. */
46 #define SIGSTKSZ 8192
47
48
49 /* Alternate, preferred interface. */
50 typedef struct sigaltstack
51 {
52 void *ss_sp;
53 int ss_flags;
54 size_t ss_size;
55 } stack_t;
56