1 /* POSIX once-only control.
2 Copyright (C) 2019-2024 Free Software Foundation, Inc.
4 This file is free software: you can redistribute it and/or modify
5 it under the terms of the GNU Lesser General Public License as
6 published by the Free Software Foundation; either version 2.1 of the
7 License, or (at your option) any later version.
9 This file is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public License
15 along with this program. If not, see <https://www.gnu.org/licenses/>. */
17 /* Written by Bruno Haible <bruno@clisp.org>, 2019. */
24 #if (defined _WIN32 && ! defined __CYGWIN__) && USE_WINDOWS_THREADS
25 # include "windows-once.h"
28 #if (defined _WIN32 && ! defined __CYGWIN__) && USE_WINDOWS_THREADS
29 /* Use Windows threads. */
32 pthread_once (pthread_once_t
*once_control
, void (*initfunction
) (void))
34 glwthread_once (once_control
, initfunction
);
39 /* Provide workarounds for POSIX threads. */
42 /* Provide a dummy implementation for single-threaded applications. */
45 pthread_once (pthread_once_t
*once_control
, void (*initfunction
) (void))
47 if (*once_control
== 0)