misc/single_threaded.c

   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
  24 char __libc_single_threaded;
  25 #else
  26 char __libc_single_threaded = 1;
  27 #endif
  28 libc_hidden_data_def_alias (__libc_single_threaded,
  29                             __libc_single_threaded_internal)