| 1 | /* sysconf_sigstksz (). Linux version. |
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| 2 | Copyright (C) 2020-2022 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | /* Return sysconf (_SC_SIGSTKSZ). */ |
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| 20 | |
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| 21 | static long int |
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| 22 | sysconf_sigstksz (void) |
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| 23 | { |
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| 24 | long int minsigstacksize = GLRO(dl_minsigstacksize); |
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| 25 | assert (minsigstacksize != 0); |
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| 26 | _Static_assert (__builtin_constant_p (MINSIGSTKSZ), |
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| 27 | "MINSIGSTKSZ is constant" ); |
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| 28 | if (minsigstacksize < MINSIGSTKSZ) |
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| 29 | minsigstacksize = MINSIGSTKSZ; |
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| 30 | /* MAX (MINSIGSTKSZ, sysconf (_SC_MINSIGSTKSZ)) * 4. */ |
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| 31 | long int sigstacksize = minsigstacksize * 4; |
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| 32 | /* Return MAX (SIGSTKSZ, sigstacksize). */ |
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| 33 | _Static_assert (__builtin_constant_p (SIGSTKSZ), |
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| 34 | "SIGSTKSZ is constant" ); |
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| 35 | if (sigstacksize < SIGSTKSZ) |
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| 36 | sigstacksize = SIGSTKSZ; |
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| 37 | return sigstacksize; |
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| 38 | } |
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| 39 | |
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