1/* sysconf_sigstksz (). Linux version.
2 Copyright (C) 2020 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, see
17 <https://www.gnu.org/licenses/>. */
18
19/* Return sysconf (_SC_SIGSTKSZ). */
20
21static long int
22sysconf_sigstksz (void)
23{
24 long int minsigstacksize = GLRO(dl_minsigstacksize);
25 assert (minsigstacksize != 0);
26 _Static_assert (__builtin_constant_p (MINSIGSTKSZ),
27 "MINSIGSTKSZ is constant");
28 if (minsigstacksize < MINSIGSTKSZ)
29 minsigstacksize = MINSIGSTKSZ;
30 /* MAX (MINSIGSTKSZ, sysconf (_SC_MINSIGSTKSZ)) * 4. */
31 long int sigstacksize = minsigstacksize * 4;
32 /* Return MAX (SIGSTKSZ, sigstacksize). */
33 _Static_assert (__builtin_constant_p (SIGSTKSZ),
34 "SIGSTKSZ is constant");
35 if (sigstacksize < SIGSTKSZ)
36 sigstacksize = SIGSTKSZ;
37 return sigstacksize;
38}
39