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1/* Once-only control (native Windows implementation).
2 Copyright (C) 2005-2023 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 */