| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* Determine whether block of given size can be allocated on the stack or not. |
| 2 | Copyright (C) 2002-2016 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 License as |
| 7 | published by the Free Software Foundation; either version 2.1 of the |
| 8 | 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; see the file COPYING.LIB. If |
| 17 | not, see <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #include <alloca.h> |
| 20 | #include <limits.h> |
| 21 | |
| 22 | |
| 23 | extern __always_inline |
| 24 | int |
| 25 | __libc_use_alloca (size_t size) |
| 26 | { |
| 27 | return (__builtin_expect (size <= PTHREAD_STACK_MIN / 4, 1) |
| 28 | || __builtin_expect (__libc_alloca_cutoff (size), 1)); |
| 29 | } |