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c0c3707f | 1 | /* Once-only control (native Windows implementation). |
5df4cba6 | 2 | Copyright (C) 2005-2020 Free Software Foundation, Inc. |
c0c3707f CB |
3 | |
4 | This program is free software; you can redistribute it and/or modify | |
5 | it under the terms of the GNU General Public License as published by | |
6 | the Free Software Foundation; either version 3, or (at your option) | |
7 | any later version. | |
8 | ||
9 | This program 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 General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU 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 | ||
26 | typedef 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 | |
37 | extern "C" { | |
38 | #endif | |
39 | ||
40 | extern 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 */ |