1/* Once-only control (native Windows implementation).
2   Copyright (C) 2005-2022 Free Software Foundation, Inc.
3
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.
8
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.
13
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/>.  */
16
17/* Written by Bruno Haible <bruno@clisp.org>, 2005.
18   Based on GCC's gthr-win32.h.  */
19
20#ifndef _WINDOWS_ONCE_H
21#define _WINDOWS_ONCE_H
22
23#define WIN32_LEAN_AND_MEAN  /* avoid including junk */
24#include <windows.h>
25
26typedef struct
27        {
28          volatile int inited;
29          volatile LONG started;
30          CRITICAL_SECTION lock;
31        }
32        glwthread_once_t;
33
34#define GLWTHREAD_ONCE_INIT { -1, -1 }
35
36#ifdef __cplusplus
37extern "C" {
38#endif
39
40extern void glwthread_once (glwthread_once_t *once_control,
41                            void (*initfunction) (void));
42
43#ifdef __cplusplus
44}
45#endif
46
47#endif /* _WINDOWS_ONCE_H */
48