1/* Support for single-thread optimizations. Statically linked version.
2 Copyright (C) 2020-2024 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 <sys/single_threaded.h>
20
21/* In dynamically linked programs, this variable is initialized in
22 __libc_early_init (as false for inner libcs). */
23#ifdef SHARED
24char __libc_single_threaded;
25#else
26char __libc_single_threaded = 1;
27#endif
28libc_hidden_data_def_alias (__libc_single_threaded,
29 __libc_single_threaded_internal)
30

source code of glibc/misc/single_threaded.c