1/* Set a small stack size, but still large enough for glibc's needs.
2 Copyright (C) 2019-2023 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#include <limits.h>
20#include <pthread.h>
21#include <support/xthread.h>
22
23size_t
24support_small_thread_stack_size (void)
25{
26 /* Some architectures have too small values for PTHREAD_STACK_MIN
27 which cannot be used for creating threads. Ensure that the stack
28 size is at least 256 KiB. */
29 size_t stack_size = 256 * 1024;
30#ifdef PTHREAD_STACK_MIN
31 if (stack_size < PTHREAD_STACK_MIN)
32 stack_size = PTHREAD_STACK_MIN;
33#endif
34 return stack_size;
35}
36
37void
38support_set_small_thread_stack_size (pthread_attr_t *attr)
39{
40 xpthread_attr_setstacksize (attr, support_small_thread_stack_size ());
41}
42