1 /* Set a small stack size, but still large enough for glibc's needs. 2 Copyright (C) 2019-2022 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 23 size_t support_small_thread_stack_size(void)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 37 void support_set_small_thread_stack_size(pthread_attr_t * attr)38support_set_small_thread_stack_size (pthread_attr_t *attr) 39 { 40 xpthread_attr_setstacksize (attr, support_small_thread_stack_size ()); 41 } 42